diff options
Diffstat (limited to 'tools/testing/selftests/drivers/net')
104 files changed, 14440 insertions, 971 deletions
diff --git a/tools/testing/selftests/drivers/net/.gitignore b/tools/testing/selftests/drivers/net/.gitignore new file mode 100644 index 000000000000..3633c7a3ed65 --- /dev/null +++ b/tools/testing/selftests/drivers/net/.gitignore @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only +gro +napi_id_helper +psp_responder diff --git a/tools/testing/selftests/drivers/net/Makefile b/tools/testing/selftests/drivers/net/Makefile index e54f382bcb02..f5c71d993750 100644 --- a/tools/testing/selftests/drivers/net/Makefile +++ b/tools/testing/selftests/drivers/net/Makefile @@ -1,11 +1,43 @@ # SPDX-License-Identifier: GPL-2.0 +CFLAGS += $(KHDR_INCLUDES) -TEST_INCLUDES := $(wildcard lib/py/*.py) +TEST_INCLUDES := $(wildcard lib/py/*.py) \ + $(wildcard lib/sh/*.sh) \ + ../../net/lib.sh \ + +TEST_GEN_FILES := \ + gro \ + napi_id_helper \ +# end of TEST_GEN_FILES TEST_PROGS := \ + gro.py \ + hds.py \ + napi_id.py \ + napi_threaded.py \ + netcons_basic.sh \ + netcons_cmdline.sh \ + netcons_fragmented_msg.sh \ + netcons_overflow.sh \ + netcons_sysdata.sh \ + netcons_torture.sh \ + netpoll_basic.py \ ping.py \ + psp.py \ queues.py \ + ring_reconfig.py \ + shaper.py \ stats.py \ + xdp.py \ # end of TEST_PROGS +# YNL files, must be before "include ..lib.mk" +YNL_GEN_FILES := psp_responder +TEST_GEN_FILES += $(YNL_GEN_FILES) + include ../../lib.mk + +# YNL build +YNL_GENS := psp + +include ../../net/ynl.mk diff --git a/tools/testing/selftests/drivers/net/README.rst b/tools/testing/selftests/drivers/net/README.rst index 3b6a29e6564b..eb838ae94844 100644 --- a/tools/testing/selftests/drivers/net/README.rst +++ b/tools/testing/selftests/drivers/net/README.rst @@ -107,7 +107,7 @@ On the target machine, running the tests will use netdevsim by default:: 1..1 # timeout set to 45 # selftests: drivers/net: ping.py - # KTAP version 1 + # TAP version 13 # 1..3 # ok 1 ping.test_v4 # ok 2 ping.test_v6 @@ -128,7 +128,7 @@ Create a config with remote info:: Run the test:: [/root] # ./ksft-net-drv/drivers/net/ping.py - KTAP version 1 + TAP version 13 1..3 ok 1 ping.test_v4 ok 2 ping.test_v6 # SKIP Test requires IPv6 connectivity diff --git a/tools/testing/selftests/drivers/net/bonding/Makefile b/tools/testing/selftests/drivers/net/bonding/Makefile index 03a089165d3f..6c5c60adb5e8 100644 --- a/tools/testing/selftests/drivers/net/bonding/Makefile +++ b/tools/testing/selftests/drivers/net/bonding/Makefile @@ -4,21 +4,29 @@ TEST_PROGS := \ bond-arp-interval-causes-panic.sh \ bond-break-lacpdu-tx.sh \ + bond-eth-type-change.sh \ bond-lladdr-target.sh \ + bond_ipsec_offload.sh \ + bond_lacp_prio.sh \ + bond_macvlan_ipvlan.sh \ + bond_options.sh \ + bond_passive_lacp.sh \ dev_addr_lists.sh \ mode-1-recovery-updelay.sh \ mode-2-recovery-updelay.sh \ - bond_options.sh \ - bond-eth-type-change.sh \ - bond_macvlan.sh + netcons_over_bonding.sh \ +# end of TEST_PROGS TEST_FILES := \ - lag_lib.sh \ bond_topo_2d1c.sh \ - bond_topo_3d1c.sh + bond_topo_3d1c.sh \ + lag_lib.sh \ +# end of TEST_FILES TEST_INCLUDES := \ + ../../../net/lib.sh \ + ../lib/sh/lib_netcons.sh \ ../../../net/forwarding/lib.sh \ - ../../../net/lib.sh +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/bonding/bond_ipsec_offload.sh b/tools/testing/selftests/drivers/net/bonding/bond_ipsec_offload.sh new file mode 100755 index 000000000000..f09e100232c7 --- /dev/null +++ b/tools/testing/selftests/drivers/net/bonding/bond_ipsec_offload.sh @@ -0,0 +1,156 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# IPsec over bonding offload test: +# +# +----------------+ +# | bond0 | +# | | | +# | eth0 eth1 | +# +---+-------+----+ +# +# We use netdevsim instead of physical interfaces +#------------------------------------------------------------------- +# Example commands +# ip x s add proto esp src 192.0.2.1 dst 192.0.2.2 \ +# spi 0x07 mode transport reqid 0x07 replay-window 32 \ +# aead 'rfc4106(gcm(aes))' 1234567890123456dcba 128 \ +# sel src 192.0.2.1/24 dst 192.0.2.2/24 +# offload dev bond0 dir out +# ip x p add dir out src 192.0.2.1/24 dst 192.0.2.2/24 \ +# tmpl proto esp src 192.0.2.1 dst 192.0.2.2 \ +# spi 0x07 mode transport reqid 0x07 +# +#------------------------------------------------------------------- + +lib_dir=$(dirname "$0") +# shellcheck disable=SC1091 +source "$lib_dir"/../../../net/lib.sh +srcip=192.0.2.1 +dstip=192.0.2.2 +ipsec0=/sys/kernel/debug/netdevsim/netdevsim0/ports/0/ipsec +ipsec1=/sys/kernel/debug/netdevsim/netdevsim0/ports/1/ipsec +active_slave="" + +# shellcheck disable=SC2317 +active_slave_changed() +{ + local old_active_slave=$1 + local new_active_slave + + # shellcheck disable=SC2154 + new_active_slave=$(ip -n "${ns}" -d -j link show bond0 | \ + jq -r ".[].linkinfo.info_data.active_slave") + [ "$new_active_slave" != "$old_active_slave" ] && [ "$new_active_slave" != "null" ] +} + +test_offload() +{ + # use ping to exercise the Tx path + ip netns exec "$ns" ping -I bond0 -c 3 -W 1 -i 0 "$dstip" >/dev/null + + active_slave=$(ip -n "${ns}" -d -j link show bond0 | \ + jq -r ".[].linkinfo.info_data.active_slave") + + if [ "$active_slave" = "$nic0" ]; then + sysfs=$ipsec0 + elif [ "$active_slave" = "$nic1" ]; then + sysfs=$ipsec1 + else + check_err 1 "bond_ipsec_offload invalid active_slave $active_slave" + fi + + # The tx/rx order in sysfs may changed after failover + grep -q "SA count=2 tx=3" "$sysfs" && grep -q "tx ipaddr=$dstip" "$sysfs" + check_err $? "incorrect tx count with link ${active_slave}" + + log_test bond_ipsec_offload "active_slave ${active_slave}" +} + +setup_env() +{ + if ! mount | grep -q debugfs; then + mount -t debugfs none /sys/kernel/debug/ &> /dev/null + defer umount /sys/kernel/debug/ + + fi + + # setup netdevsim since dummy/veth dev doesn't have offload support + if [ ! -w /sys/bus/netdevsim/new_device ] ; then + if ! modprobe -q netdevsim; then + echo "SKIP: can't load netdevsim for ipsec offload" + # shellcheck disable=SC2154 + exit "$ksft_skip" + fi + defer modprobe -r netdevsim + fi + + setup_ns ns + defer cleanup_ns "$ns" +} + +setup_bond() +{ + ip -n "$ns" link add bond0 type bond mode active-backup miimon 100 + ip -n "$ns" addr add "$srcip/24" dev bond0 + ip -n "$ns" link set bond0 up + + echo "0 2" | ip netns exec "$ns" tee /sys/bus/netdevsim/new_device >/dev/null + nic0=$(ip netns exec "$ns" ls /sys/bus/netdevsim/devices/netdevsim0/net | head -n 1) + nic1=$(ip netns exec "$ns" ls /sys/bus/netdevsim/devices/netdevsim0/net | tail -n 1) + ip -n "$ns" link set "$nic0" master bond0 + ip -n "$ns" link set "$nic1" master bond0 + + # we didn't create a peer, make sure we can Tx by adding a permanent + # neighbour this need to be added after enslave + ip -n "$ns" neigh add "$dstip" dev bond0 lladdr 00:11:22:33:44:55 + + # create offloaded SAs, both in and out + ip -n "$ns" x p add dir out src "$srcip/24" dst "$dstip/24" \ + tmpl proto esp src "$srcip" dst "$dstip" spi 9 \ + mode transport reqid 42 + + ip -n "$ns" x p add dir in src "$dstip/24" dst "$srcip/24" \ + tmpl proto esp src "$dstip" dst "$srcip" spi 9 \ + mode transport reqid 42 + + ip -n "$ns" x s add proto esp src "$srcip" dst "$dstip" spi 9 \ + mode transport reqid 42 aead "rfc4106(gcm(aes))" \ + 0x3132333435363738393031323334353664636261 128 \ + sel src "$srcip/24" dst "$dstip/24" \ + offload dev bond0 dir out + + ip -n "$ns" x s add proto esp src "$dstip" dst "$srcip" spi 9 \ + mode transport reqid 42 aead "rfc4106(gcm(aes))" \ + 0x3132333435363738393031323334353664636261 128 \ + sel src "$dstip/24" dst "$srcip/24" \ + offload dev bond0 dir in + + # does offload show up in ip output + lines=$(ip -n "$ns" x s list | grep -c "crypto offload parameters: dev bond0 dir") + if [ "$lines" -ne 2 ] ; then + check_err 1 "bond_ipsec_offload SA offload missing from list output" + fi +} + +trap defer_scopes_cleanup EXIT +setup_env +setup_bond + +# start Offload testing +test_offload + +# do failover and re-test +ip -n "$ns" link set "$active_slave" down +slowwait 5 active_slave_changed "$active_slave" +test_offload + +# make sure offload get removed from driver +ip -n "$ns" x s flush +ip -n "$ns" x p flush +line0=$(grep -c "SA count=0" "$ipsec0") +line1=$(grep -c "SA count=0" "$ipsec1") +[ "$line0" -ne 1 ] || [ "$line1" -ne 1 ] +check_fail $? "bond_ipsec_offload SA not removed from driver" + +exit "$EXIT_STATUS" diff --git a/tools/testing/selftests/drivers/net/bonding/bond_lacp_prio.sh b/tools/testing/selftests/drivers/net/bonding/bond_lacp_prio.sh new file mode 100755 index 000000000000..a483d505c6a8 --- /dev/null +++ b/tools/testing/selftests/drivers/net/bonding/bond_lacp_prio.sh @@ -0,0 +1,108 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Testing if bond lacp per port priority works +# +# Switch (s_ns) Backup Switch (b_ns) +# +-------------------------+ +-------------------------+ +# | bond0 | | bond0 | +# | + | | + | +# | eth0 | eth1 | | eth0 | eth1 | +# | +---+---+ | | +---+---+ | +# | | | | | | | | +# +-------------------------+ +-------------------------+ +# | | | | +# +-----------------------------------------------------+ +# | | | | | | +# | +-------+---------+---------+-------+ | +# | eth0 eth1 | eth2 eth3 | +# | + | +# | bond0 | +# +-----------------------------------------------------+ +# Client (c_ns) + +lib_dir=$(dirname "$0") +# shellcheck disable=SC1091 +source "$lib_dir"/../../../net/lib.sh + +setup_links() +{ + # shellcheck disable=SC2154 + ip -n "${c_ns}" link add eth0 type veth peer name eth0 netns "${s_ns}" + ip -n "${c_ns}" link add eth1 type veth peer name eth1 netns "${s_ns}" + # shellcheck disable=SC2154 + ip -n "${c_ns}" link add eth2 type veth peer name eth0 netns "${b_ns}" + ip -n "${c_ns}" link add eth3 type veth peer name eth1 netns "${b_ns}" + + ip -n "${c_ns}" link add bond0 type bond mode 802.3ad miimon 100 \ + lacp_rate fast ad_select actor_port_prio + ip -n "${s_ns}" link add bond0 type bond mode 802.3ad miimon 100 \ + lacp_rate fast + ip -n "${b_ns}" link add bond0 type bond mode 802.3ad miimon 100 \ + lacp_rate fast + + ip -n "${c_ns}" link set eth0 master bond0 + ip -n "${c_ns}" link set eth1 master bond0 + ip -n "${c_ns}" link set eth2 master bond0 + ip -n "${c_ns}" link set eth3 master bond0 + ip -n "${s_ns}" link set eth0 master bond0 + ip -n "${s_ns}" link set eth1 master bond0 + ip -n "${b_ns}" link set eth0 master bond0 + ip -n "${b_ns}" link set eth1 master bond0 + + ip -n "${c_ns}" link set bond0 up + ip -n "${s_ns}" link set bond0 up + ip -n "${b_ns}" link set bond0 up +} + +test_port_prio_setting() +{ + RET=0 + ip -n "${c_ns}" link set eth0 type bond_slave actor_port_prio 1000 + prio=$(cmd_jq "ip -n ${c_ns} -d -j link show eth0" \ + ".[].linkinfo.info_slave_data.actor_port_prio") + [ "$prio" -ne 1000 ] && RET=1 + ip -n "${c_ns}" link set eth2 type bond_slave actor_port_prio 10 + prio=$(cmd_jq "ip -n ${c_ns} -d -j link show eth2" \ + ".[].linkinfo.info_slave_data.actor_port_prio") + [ "$prio" -ne 10 ] && RET=1 +} + +test_agg_reselect() +{ + local bond_agg_id slave_agg_id + local expect_slave="$1" + RET=0 + + # Trigger link state change to reselect the aggregator + ip -n "${c_ns}" link set eth1 down + sleep 0.5 + ip -n "${c_ns}" link set eth1 up + sleep 0.5 + + bond_agg_id=$(cmd_jq "ip -n ${c_ns} -d -j link show bond0" \ + ".[].linkinfo.info_data.ad_info.aggregator") + slave_agg_id=$(cmd_jq "ip -n ${c_ns} -d -j link show $expect_slave" \ + ".[].linkinfo.info_slave_data.ad_aggregator_id") + # shellcheck disable=SC2034 + [ "${bond_agg_id}" -ne "${slave_agg_id}" ] && \ + RET=1 +} + +trap cleanup_all_ns EXIT +setup_ns c_ns s_ns b_ns +setup_links + +test_port_prio_setting +log_test "bond 802.3ad" "actor_port_prio setting" + +test_agg_reselect eth0 +log_test "bond 802.3ad" "actor_port_prio select" + +# Change the actor port prio and re-test +ip -n "${c_ns}" link set eth0 type bond_slave actor_port_prio 10 +ip -n "${c_ns}" link set eth2 type bond_slave actor_port_prio 1000 +test_agg_reselect eth2 +log_test "bond 802.3ad" "actor_port_prio switch" + +exit "${EXIT_STATUS}" diff --git a/tools/testing/selftests/drivers/net/bonding/bond_macvlan.sh b/tools/testing/selftests/drivers/net/bonding/bond_macvlan.sh deleted file mode 100755 index b609fb6231f4..000000000000 --- a/tools/testing/selftests/drivers/net/bonding/bond_macvlan.sh +++ /dev/null @@ -1,99 +0,0 @@ -#!/bin/bash -# SPDX-License-Identifier: GPL-2.0 -# -# Test macvlan over balance-alb - -lib_dir=$(dirname "$0") -source ${lib_dir}/bond_topo_2d1c.sh - -m1_ns="m1-$(mktemp -u XXXXXX)" -m2_ns="m1-$(mktemp -u XXXXXX)" -m1_ip4="192.0.2.11" -m1_ip6="2001:db8::11" -m2_ip4="192.0.2.12" -m2_ip6="2001:db8::12" - -cleanup() -{ - ip -n ${m1_ns} link del macv0 - ip netns del ${m1_ns} - ip -n ${m2_ns} link del macv0 - ip netns del ${m2_ns} - - client_destroy - server_destroy - gateway_destroy -} - -check_connection() -{ - local ns=${1} - local target=${2} - local message=${3:-"macvlan_over_bond"} - RET=0 - - - ip netns exec ${ns} ping ${target} -c 4 -i 0.1 &>/dev/null - check_err $? "ping failed" - log_test "$mode: $message" -} - -macvlan_over_bond() -{ - local param="$1" - RET=0 - - # setup new bond mode - bond_reset "${param}" - - ip -n ${s_ns} link add link bond0 name macv0 type macvlan mode bridge - ip -n ${s_ns} link set macv0 netns ${m1_ns} - ip -n ${m1_ns} link set dev macv0 up - ip -n ${m1_ns} addr add ${m1_ip4}/24 dev macv0 - ip -n ${m1_ns} addr add ${m1_ip6}/24 dev macv0 - - ip -n ${s_ns} link add link bond0 name macv0 type macvlan mode bridge - ip -n ${s_ns} link set macv0 netns ${m2_ns} - ip -n ${m2_ns} link set dev macv0 up - ip -n ${m2_ns} addr add ${m2_ip4}/24 dev macv0 - ip -n ${m2_ns} addr add ${m2_ip6}/24 dev macv0 - - sleep 2 - - check_connection "${c_ns}" "${s_ip4}" "IPv4: client->server" - check_connection "${c_ns}" "${s_ip6}" "IPv6: client->server" - check_connection "${c_ns}" "${m1_ip4}" "IPv4: client->macvlan_1" - check_connection "${c_ns}" "${m1_ip6}" "IPv6: client->macvlan_1" - check_connection "${c_ns}" "${m2_ip4}" "IPv4: client->macvlan_2" - check_connection "${c_ns}" "${m2_ip6}" "IPv6: client->macvlan_2" - check_connection "${m1_ns}" "${m2_ip4}" "IPv4: macvlan_1->macvlan_2" - check_connection "${m1_ns}" "${m2_ip6}" "IPv6: macvlan_1->macvlan_2" - - - sleep 5 - - check_connection "${s_ns}" "${c_ip4}" "IPv4: server->client" - check_connection "${s_ns}" "${c_ip6}" "IPv6: server->client" - check_connection "${m1_ns}" "${c_ip4}" "IPv4: macvlan_1->client" - check_connection "${m1_ns}" "${c_ip6}" "IPv6: macvlan_1->client" - check_connection "${m2_ns}" "${c_ip4}" "IPv4: macvlan_2->client" - check_connection "${m2_ns}" "${c_ip6}" "IPv6: macvlan_2->client" - check_connection "${m2_ns}" "${m1_ip4}" "IPv4: macvlan_2->macvlan_2" - check_connection "${m2_ns}" "${m1_ip6}" "IPv6: macvlan_2->macvlan_2" - - ip -n ${c_ns} neigh flush dev eth0 -} - -trap cleanup EXIT - -setup_prepare -ip netns add ${m1_ns} -ip netns add ${m2_ns} - -modes="active-backup balance-tlb balance-alb" - -for mode in $modes; do - macvlan_over_bond "mode $mode" -done - -exit $EXIT_STATUS diff --git a/tools/testing/selftests/drivers/net/bonding/bond_macvlan_ipvlan.sh b/tools/testing/selftests/drivers/net/bonding/bond_macvlan_ipvlan.sh new file mode 100755 index 000000000000..559f300f965a --- /dev/null +++ b/tools/testing/selftests/drivers/net/bonding/bond_macvlan_ipvlan.sh @@ -0,0 +1,97 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Test macvlan/ipvlan over bond + +lib_dir=$(dirname "$0") +source ${lib_dir}/bond_topo_2d1c.sh + +xvlan1_ns="xvlan1-$(mktemp -u XXXXXX)" +xvlan2_ns="xvlan2-$(mktemp -u XXXXXX)" +xvlan1_ip4="192.0.2.11" +xvlan1_ip6="2001:db8::11" +xvlan2_ip4="192.0.2.12" +xvlan2_ip6="2001:db8::12" + +cleanup() +{ + client_destroy + server_destroy + gateway_destroy + + ip netns del ${xvlan1_ns} + ip netns del ${xvlan2_ns} +} + +check_connection() +{ + local ns=${1} + local target=${2} + local message=${3} + RET=0 + + sleep 0.25 + ip netns exec ${ns} ping ${target} -c 4 -i 0.1 &>/dev/null + check_err $? "ping failed" + log_test "${bond_mode}/${xvlan_type}_${xvlan_mode}: ${message}" +} + +xvlan_over_bond() +{ + local param="$1" + local xvlan_type="$2" + local xvlan_mode="$3" + RET=0 + + # setup new bond mode + bond_reset "${param}" + + ip -n ${s_ns} link add link bond0 name ${xvlan_type}0 type ${xvlan_type} mode ${xvlan_mode} + ip -n ${s_ns} link set ${xvlan_type}0 netns ${xvlan1_ns} + ip -n ${xvlan1_ns} link set dev ${xvlan_type}0 up + ip -n ${xvlan1_ns} addr add ${xvlan1_ip4}/24 dev ${xvlan_type}0 + ip -n ${xvlan1_ns} addr add ${xvlan1_ip6}/24 dev ${xvlan_type}0 + + ip -n ${s_ns} link add link bond0 name ${xvlan_type}0 type ${xvlan_type} mode ${xvlan_mode} + ip -n ${s_ns} link set ${xvlan_type}0 netns ${xvlan2_ns} + ip -n ${xvlan2_ns} link set dev ${xvlan_type}0 up + ip -n ${xvlan2_ns} addr add ${xvlan2_ip4}/24 dev ${xvlan_type}0 + ip -n ${xvlan2_ns} addr add ${xvlan2_ip6}/24 dev ${xvlan_type}0 + + sleep 2 + + check_connection "${c_ns}" "${s_ip4}" "IPv4: client->server" + check_connection "${c_ns}" "${s_ip6}" "IPv6: client->server" + check_connection "${c_ns}" "${xvlan1_ip4}" "IPv4: client->${xvlan_type}_1" + check_connection "${c_ns}" "${xvlan1_ip6}" "IPv6: client->${xvlan_type}_1" + check_connection "${c_ns}" "${xvlan2_ip4}" "IPv4: client->${xvlan_type}_2" + check_connection "${c_ns}" "${xvlan2_ip6}" "IPv6: client->${xvlan_type}_2" + check_connection "${xvlan1_ns}" "${xvlan2_ip4}" "IPv4: ${xvlan_type}_1->${xvlan_type}_2" + check_connection "${xvlan1_ns}" "${xvlan2_ip6}" "IPv6: ${xvlan_type}_1->${xvlan_type}_2" + + check_connection "${s_ns}" "${c_ip4}" "IPv4: server->client" + check_connection "${s_ns}" "${c_ip6}" "IPv6: server->client" + check_connection "${xvlan1_ns}" "${c_ip4}" "IPv4: ${xvlan_type}_1->client" + check_connection "${xvlan1_ns}" "${c_ip6}" "IPv6: ${xvlan_type}_1->client" + check_connection "${xvlan2_ns}" "${c_ip4}" "IPv4: ${xvlan_type}_2->client" + check_connection "${xvlan2_ns}" "${c_ip6}" "IPv6: ${xvlan_type}_2->client" + check_connection "${xvlan2_ns}" "${xvlan1_ip4}" "IPv4: ${xvlan_type}_2->${xvlan_type}_1" + check_connection "${xvlan2_ns}" "${xvlan1_ip6}" "IPv6: ${xvlan_type}_2->${xvlan_type}_1" + + ip -n ${c_ns} neigh flush dev eth0 +} + +trap cleanup EXIT + +setup_prepare +ip netns add ${xvlan1_ns} +ip netns add ${xvlan2_ns} + +bond_modes="active-backup balance-tlb balance-alb" + +for bond_mode in ${bond_modes}; do + xvlan_over_bond "mode ${bond_mode}" macvlan bridge + xvlan_over_bond "mode ${bond_mode}" ipvlan l2 +done + +exit $EXIT_STATUS diff --git a/tools/testing/selftests/drivers/net/bonding/bond_options.sh b/tools/testing/selftests/drivers/net/bonding/bond_options.sh index 41d0859feb7d..187b478d0ddf 100755 --- a/tools/testing/selftests/drivers/net/bonding/bond_options.sh +++ b/tools/testing/selftests/drivers/net/bonding/bond_options.sh @@ -7,10 +7,14 @@ ALL_TESTS=" prio arp_validate num_grat_arp + fail_over_mac + vlan_over_bond " lib_dir=$(dirname "$0") source ${lib_dir}/bond_topo_3d1c.sh +c_maddr="33:33:ff:00:00:10" +g_maddr="33:33:ff:00:02:54" skip_prio() { @@ -240,6 +244,54 @@ arp_validate_test() done } +# Testing correct multicast groups are added to slaves for ns targets +arp_validate_mcast() +{ + RET=0 + local arp_valid=$(cmd_jq "ip -n ${s_ns} -j -d link show bond0" ".[].linkinfo.info_data.arp_validate") + local active_slave=$(cmd_jq "ip -n ${s_ns} -d -j link show bond0" ".[].linkinfo.info_data.active_slave") + + for i in $(seq 0 2); do + maddr_list=$(ip -n ${s_ns} maddr show dev eth${i}) + + # arp_valid == 0 or active_slave should not join any maddrs + if { [ "$arp_valid" == "null" ] || [ "eth${i}" == ${active_slave} ]; } && \ + echo "$maddr_list" | grep -qE "${c_maddr}|${g_maddr}"; then + RET=1 + check_err 1 "arp_valid $arp_valid active_slave $active_slave, eth$i has mcast group" + # arp_valid != 0 and backup_slave should join both maddrs + elif [ "$arp_valid" != "null" ] && [ "eth${i}" != ${active_slave} ] && \ + ( ! echo "$maddr_list" | grep -q "${c_maddr}" || \ + ! echo "$maddr_list" | grep -q "${m_maddr}"); then + RET=1 + check_err 1 "arp_valid $arp_valid active_slave $active_slave, eth$i has mcast group" + fi + done + + # Do failover + ip -n ${s_ns} link set ${active_slave} down + # wait for active link change + slowwait 2 active_slave_changed $active_slave + active_slave=$(cmd_jq "ip -n ${s_ns} -d -j link show bond0" ".[].linkinfo.info_data.active_slave") + + for i in $(seq 0 2); do + maddr_list=$(ip -n ${s_ns} maddr show dev eth${i}) + + # arp_valid == 0 or active_slave should not join any maddrs + if { [ "$arp_valid" == "null" ] || [ "eth${i}" == ${active_slave} ]; } && \ + echo "$maddr_list" | grep -qE "${c_maddr}|${g_maddr}"; then + RET=1 + check_err 1 "arp_valid $arp_valid active_slave $active_slave, eth$i has mcast group" + # arp_valid != 0 and backup_slave should join both maddrs + elif [ "$arp_valid" != "null" ] && [ "eth${i}" != ${active_slave} ] && \ + ( ! echo "$maddr_list" | grep -q "${c_maddr}" || \ + ! echo "$maddr_list" | grep -q "${m_maddr}"); then + RET=1 + check_err 1 "arp_valid $arp_valid active_slave $active_slave, eth$i has mcast group" + fi + done +} + arp_validate_arp() { local mode=$1 @@ -261,8 +313,10 @@ arp_validate_ns() fi for val in $(seq 0 6); do - arp_validate_test "mode $mode arp_interval 100 ns_ip6_target ${g_ip6} arp_validate $val" + arp_validate_test "mode $mode arp_interval 100 ns_ip6_target ${g_ip6},${c_ip6} arp_validate $val" log_test "arp_validate" "$mode ns_ip6_target arp_validate $val" + arp_validate_mcast + log_test "arp_validate" "join mcast group" done } @@ -300,8 +354,8 @@ garp_test() exp_num=$(echo "${param}" | cut -f6 -d ' ') active_slave=$(cmd_jq "ip -n ${s_ns} -d -j link show bond0" ".[].linkinfo.info_data.active_slave") - slowwait_for_counter $((exp_num + 5)) $exp_num \ - tc_rule_handle_stats_get "dev s${active_slave#eth} ingress" 101 ".packets" "-n ${g_ns}" + slowwait_for_counter $((exp_num + 5)) $exp_num tc_rule_handle_stats_get \ + "dev s${active_slave#eth} ingress" 101 ".packets" "-n ${g_ns}" &> /dev/null # check result real_num=$(tc_rule_handle_stats_get "dev s${active_slave#eth} ingress" 101 ".packets" "-n ${g_ns}") @@ -324,6 +378,197 @@ num_grat_arp() done } +check_all_mac_same() +{ + RET=0 + # all slaves should have same mac address (with the first port's mac) + local bond_mac=$(ip -n "$s_ns" -j link show bond0 | jq -r '.[]["address"]') + local eth0_mac=$(ip -n "$s_ns" -j link show eth0 | jq -r '.[]["address"]') + local eth1_mac=$(ip -n "$s_ns" -j link show eth1 | jq -r '.[]["address"]') + local eth2_mac=$(ip -n "$s_ns" -j link show eth2 | jq -r '.[]["address"]') + if [ "$bond_mac" != "${mac[0]}" ] || [ "$eth0_mac" != "$bond_mac" ] || \ + [ "$eth1_mac" != "$bond_mac" ] || [ "$eth2_mac" != "$bond_mac" ]; then + RET=1 + fi +} + +check_bond_mac_same_with_first() +{ + RET=0 + # bond mac address should be same with the first added slave + local bond_mac=$(ip -n "$s_ns" -j link show bond0 | jq -r '.[]["address"]') + if [ "$bond_mac" != "${mac[0]}" ]; then + RET=1 + fi +} + +check_bond_mac_same_with_active() +{ + RET=0 + # bond mac address should be same with active slave + local bond_mac=$(ip -n "$s_ns" -j link show bond0 | jq -r '.[]["address"]') + local active_slave=$(cmd_jq "ip -n ${s_ns} -d -j link show bond0" ".[].linkinfo.info_data.active_slave") + local active_slave_mac=$(ip -n "$s_ns" -j link show "$active_slave" | jq -r '.[]["address"]') + if [ "$bond_mac" != "$active_slave_mac" ]; then + RET=1 + fi +} + +check_backup_slave_mac_not_change() +{ + RET=0 + # backup slave's mac address is not changed + if ip -n "$s_ns" -d -j link show type bond_slave | jq -e '.[] + | select(.linkinfo.info_slave_data.state=="BACKUP") + | select(.address != .linkinfo.info_slave_data.perm_hwaddr)' &> /dev/null; then + RET=1 + fi +} + +check_backup_slave_mac_inherit() +{ + local backup_mac + RET=0 + + # backup slaves should use mac[1] or mac[2] + local backup_macs=$(ip -n "$s_ns" -d -j link show type bond_slave | \ + jq -r '.[] | select(.linkinfo.info_slave_data.state=="BACKUP") | .address') + for backup_mac in $backup_macs; do + if [ "$backup_mac" != "${mac[1]}" ] && [ "$backup_mac" != "${mac[2]}" ]; then + RET=1 + fi + done +} + +check_first_slave_random_mac() +{ + RET=0 + # remove the first added slave and added it back + ip -n "$s_ns" link set eth0 nomaster + ip -n "$s_ns" link set eth0 master bond0 + + # the first slave should use random mac address + eth0_mac=$(ip -n "$s_ns" -j link show eth0 | jq -r '.[]["address"]') + [ "$eth0_mac" = "${mac[0]}" ] && RET=1 + log_test "bond fail_over_mac follow" "random first slave mac" + + # remove the first slave, the permanent MAC address should be restored back + ip -n "$s_ns" link set eth0 nomaster + eth0_mac=$(ip -n "$s_ns" -j link show eth0 | jq -r '.[]["address"]') + [ "$eth0_mac" != "${mac[0]}" ] && RET=1 +} + +do_active_backup_failover() +{ + local active_slave=$(cmd_jq "ip -n ${s_ns} -d -j link show bond0" ".[].linkinfo.info_data.active_slave") + ip -n ${s_ns} link set ${active_slave} down + slowwait 2 active_slave_changed $active_slave + ip -n ${s_ns} link set ${active_slave} up +} + +fail_over_mac() +{ + # Bring down the first interface on the switch to force the bond to + # select another active interface instead of the first one that joined. + ip -n "$g_ns" link set s0 down + + # fail_over_mac none + bond_reset "mode active-backup miimon 100 fail_over_mac 0" + check_all_mac_same + log_test "fail_over_mac 0" "all slaves have same mac" + do_active_backup_failover + check_all_mac_same + log_test "fail_over_mac 0" "failover: all slaves have same mac" + + # fail_over_mac active + bond_reset "mode active-backup miimon 100 fail_over_mac 1" + check_bond_mac_same_with_active + log_test "fail_over_mac 1" "bond mac is same with active slave mac" + check_backup_slave_mac_not_change + log_test "fail_over_mac 1" "backup slave mac is not changed" + do_active_backup_failover + check_bond_mac_same_with_active + log_test "fail_over_mac 1" "failover: bond mac is same with active slave mac" + check_backup_slave_mac_not_change + log_test "fail_over_mac 1" "failover: backup slave mac is not changed" + + # fail_over_mac follow + bond_reset "mode active-backup miimon 100 fail_over_mac 2" + check_bond_mac_same_with_first + log_test "fail_over_mac 2" "bond mac is same with first slave mac" + check_bond_mac_same_with_active + log_test "fail_over_mac 2" "bond mac is same with active slave mac" + check_backup_slave_mac_inherit + log_test "fail_over_mac 2" "backup slave mac inherit" + do_active_backup_failover + check_bond_mac_same_with_first + log_test "fail_over_mac 2" "failover: bond mac is same with first slave mac" + check_bond_mac_same_with_active + log_test "fail_over_mac 2" "failover: bond mac is same with active slave mac" + check_backup_slave_mac_inherit + log_test "fail_over_mac 2" "failover: backup slave mac inherit" + check_first_slave_random_mac + log_test "fail_over_mac 2" "first slave mac random" +} + +vlan_over_bond_arp() +{ + local mode="$1" + RET=0 + + bond_reset "mode $mode arp_interval 100 arp_ip_target 192.0.3.10" + ip -n "${s_ns}" link add bond0.3 link bond0 type vlan id 3 + ip -n "${s_ns}" link set bond0.3 up + ip -n "${s_ns}" addr add 192.0.3.1/24 dev bond0.3 + ip -n "${s_ns}" addr add 2001:db8::3:1/64 dev bond0.3 + + slowwait_for_counter 5 5 tc_rule_handle_stats_get \ + "dev eth0.3 ingress" 101 ".packets" "-n ${c_ns}" &> /dev/null || RET=1 + log_test "vlan over bond arp" "$mode" +} + +vlan_over_bond_ns() +{ + local mode="$1" + RET=0 + + if skip_ns; then + log_test_skip "vlan_over_bond ns" "$mode" + return 0 + fi + + bond_reset "mode $mode arp_interval 100 ns_ip6_target 2001:db8::3:10" + ip -n "${s_ns}" link add bond0.3 link bond0 type vlan id 3 + ip -n "${s_ns}" link set bond0.3 up + ip -n "${s_ns}" addr add 192.0.3.1/24 dev bond0.3 + ip -n "${s_ns}" addr add 2001:db8::3:1/64 dev bond0.3 + + slowwait_for_counter 5 5 tc_rule_handle_stats_get \ + "dev eth0.3 ingress" 102 ".packets" "-n ${c_ns}" &> /dev/null || RET=1 + log_test "vlan over bond ns" "$mode" +} + +vlan_over_bond() +{ + # add vlan 3 for client + ip -n "${c_ns}" link add eth0.3 link eth0 type vlan id 3 + ip -n "${c_ns}" link set eth0.3 up + ip -n "${c_ns}" addr add 192.0.3.10/24 dev eth0.3 + ip -n "${c_ns}" addr add 2001:db8::3:10/64 dev eth0.3 + + # Add tc rule to check the vlan pkts + tc -n "${c_ns}" qdisc add dev eth0.3 clsact + tc -n "${c_ns}" filter add dev eth0.3 ingress protocol arp \ + handle 101 flower skip_hw arp_op request \ + arp_sip 192.0.3.1 arp_tip 192.0.3.10 action pass + tc -n "${c_ns}" filter add dev eth0.3 ingress protocol ipv6 \ + handle 102 flower skip_hw ip_proto icmpv6 \ + type 135 src_ip 2001:db8::3:1 action pass + + vlan_over_bond_arp "active-backup" + vlan_over_bond_ns "active-backup" +} + trap cleanup EXIT setup_prepare diff --git a/tools/testing/selftests/drivers/net/bonding/bond_passive_lacp.sh b/tools/testing/selftests/drivers/net/bonding/bond_passive_lacp.sh new file mode 100755 index 000000000000..9c3b089813df --- /dev/null +++ b/tools/testing/selftests/drivers/net/bonding/bond_passive_lacp.sh @@ -0,0 +1,105 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Test if a bond interface works with lacp_active=off. + +# shellcheck disable=SC2034 +REQUIRE_MZ=no +NUM_NETIFS=0 +lib_dir=$(dirname "$0") +# shellcheck disable=SC1091 +source "$lib_dir"/../../../net/forwarding/lib.sh + +# shellcheck disable=SC2317 +check_port_state() +{ + local netns=$1 + local port=$2 + local state=$3 + + ip -n "${netns}" -d -j link show "$port" | \ + jq -e ".[].linkinfo.info_slave_data.ad_actor_oper_port_state_str | index(\"${state}\") != null" > /dev/null +} + +check_pkt_count() +{ + RET=0 + local ns="$1" + local iface="$2" + + # wait 65s, one per 30s + slowwait_for_counter 65 2 tc_rule_handle_stats_get \ + "dev ${iface} egress" 101 ".packets" "-n ${ns}" &> /dev/null +} + +setup() { + setup_ns c_ns s_ns + + # shellcheck disable=SC2154 + ip -n "${c_ns}" link add eth0 type veth peer name eth0 netns "${s_ns}" + ip -n "${c_ns}" link add eth1 type veth peer name eth1 netns "${s_ns}" + + # Add tc filter to count the pkts + tc -n "${c_ns}" qdisc add dev eth0 clsact + tc -n "${c_ns}" filter add dev eth0 egress handle 101 protocol 0x8809 matchall action pass + tc -n "${s_ns}" qdisc add dev eth1 clsact + tc -n "${s_ns}" filter add dev eth1 egress handle 101 protocol 0x8809 matchall action pass + + ip -n "${s_ns}" link add bond0 type bond mode 802.3ad lacp_active on lacp_rate fast + ip -n "${s_ns}" link set eth0 master bond0 + ip -n "${s_ns}" link set eth1 master bond0 + + ip -n "${c_ns}" link add bond0 type bond mode 802.3ad lacp_active off lacp_rate fast + ip -n "${c_ns}" link set eth0 master bond0 + ip -n "${c_ns}" link set eth1 master bond0 + +} + +trap cleanup_all_ns EXIT +setup + +# The bond will send 2 lacpdu pkts during init time, let's wait at least 2s +# after interface up +ip -n "${c_ns}" link set bond0 up +sleep 2 + +# 1. The passive side shouldn't send LACPDU. +check_pkt_count "${c_ns}" "eth0" && RET=1 +log_test "802.3ad lacp_active off" "init port" + +ip -n "${s_ns}" link set bond0 up +# 2. The passive side should not have the 'active' flag. +RET=0 +slowwait 2 check_port_state "${c_ns}" "eth0" "active" && RET=1 +log_test "802.3ad lacp_active off" "port state active" + +# 3. The active side should have the 'active' flag. +RET=0 +slowwait 2 check_port_state "${s_ns}" "eth0" "active" || RET=1 +log_test "802.3ad lacp_active on" "port state active" + +# 4. Make sure the connection is not expired. +RET=0 +slowwait 5 check_port_state "${s_ns}" "eth0" "distributing" +slowwait 10 check_port_state "${s_ns}" "eth0" "expired" && RET=1 +log_test "bond 802.3ad lacp_active off" "port connection" + +# After testing, disconnect one port on each side to check the state. +ip -n "${s_ns}" link set eth0 nomaster +ip -n "${s_ns}" link set eth0 up +ip -n "${c_ns}" link set eth1 nomaster +ip -n "${c_ns}" link set eth1 up +# Due to Periodic Machine and Rx Machine state change, the bond will still +# send lacpdu pkts in a few seconds. sleep at lease 5s to make sure +# negotiation finished +sleep 5 + +# 5. The active side should keep sending LACPDU. +check_pkt_count "${s_ns}" "eth1" || RET=1 +log_test "bond 802.3ad lacp_active on" "port pkt after disconnect" + +# 6. The passive side shouldn't send LACPDU anymore. +check_pkt_count "${c_ns}" "eth0" && RET=1 +log_test "bond 802.3ad lacp_active off" "port pkt after disconnect" + +exit "$EXIT_STATUS" diff --git a/tools/testing/selftests/drivers/net/bonding/bond_topo_2d1c.sh b/tools/testing/selftests/drivers/net/bonding/bond_topo_2d1c.sh index 195ef83cfbf1..167aa4a4a12a 100644 --- a/tools/testing/selftests/drivers/net/bonding/bond_topo_2d1c.sh +++ b/tools/testing/selftests/drivers/net/bonding/bond_topo_2d1c.sh @@ -39,6 +39,8 @@ g_ip4="192.0.2.254" s_ip6="2001:db8::1" c_ip6="2001:db8::10" g_ip6="2001:db8::254" +mac[0]="00:0a:0b:0c:0d:01" +mac[1]="00:0a:0b:0c:0d:02" gateway_create() { @@ -62,6 +64,7 @@ server_create() for i in $(seq 0 1); do ip -n ${s_ns} link add eth${i} type veth peer name s${i} netns ${g_ns} + ip -n "${s_ns}" link set "eth${i}" addr "${mac[$i]}" ip -n ${g_ns} link set s${i} up ip -n ${g_ns} link set s${i} master br0 diff --git a/tools/testing/selftests/drivers/net/bonding/bond_topo_3d1c.sh b/tools/testing/selftests/drivers/net/bonding/bond_topo_3d1c.sh index 3a1333d9a85b..23a2932301cc 100644 --- a/tools/testing/selftests/drivers/net/bonding/bond_topo_3d1c.sh +++ b/tools/testing/selftests/drivers/net/bonding/bond_topo_3d1c.sh @@ -26,6 +26,7 @@ # +-------------------------------------+ source bond_topo_2d1c.sh +mac[2]="00:0a:0b:0c:0d:03" setup_prepare() { @@ -36,6 +37,7 @@ setup_prepare() # Add the extra device as we use 3 down links for bond0 local i=2 ip -n ${s_ns} link add eth${i} type veth peer name s${i} netns ${g_ns} + ip -n "${s_ns}" link set "eth${i}" addr "${mac[$i]}" ip -n ${g_ns} link set s${i} up ip -n ${g_ns} link set s${i} master br0 ip -n ${s_ns} link set eth${i} master bond0 diff --git a/tools/testing/selftests/drivers/net/bonding/config b/tools/testing/selftests/drivers/net/bonding/config index 899d7fb6ea8e..991494376223 100644 --- a/tools/testing/selftests/drivers/net/bonding/config +++ b/tools/testing/selftests/drivers/net/bonding/config @@ -1,10 +1,21 @@ CONFIG_BONDING=y CONFIG_BRIDGE=y +CONFIG_CONFIGFS_FS=y CONFIG_DUMMY=y +CONFIG_INET_ESP=y +CONFIG_INET_ESP_OFFLOAD=y CONFIG_IPV6=y +CONFIG_IPVLAN=y CONFIG_MACVLAN=y CONFIG_NET_ACT_GACT=y CONFIG_NET_CLS_FLOWER=y +CONFIG_NET_CLS_MATCHALL=m +CONFIG_NETCONSOLE=m +CONFIG_NETCONSOLE_DYNAMIC=y +CONFIG_NETCONSOLE_EXTENDED_LOG=y +CONFIG_NETDEVSIM=m CONFIG_NET_SCH_INGRESS=y CONFIG_NLMON=y CONFIG_VETH=y +CONFIG_VLAN_8021Q=m +CONFIG_XFRM_USER=m diff --git a/tools/testing/selftests/drivers/net/bonding/netcons_over_bonding.sh b/tools/testing/selftests/drivers/net/bonding/netcons_over_bonding.sh new file mode 100755 index 000000000000..477cc9379500 --- /dev/null +++ b/tools/testing/selftests/drivers/net/bonding/netcons_over_bonding.sh @@ -0,0 +1,361 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: GPL-2.0 +# +# This selftest exercises trying to have multiple netpoll users at the same +# time. +# +# This selftest has multiple smalls test inside, and the goal is to +# get interfaces with bonding and netconsole in different orders in order +# to catch any possible issue. +# +# The main test composes of four interfaces being created using netdevsim; two +# of them are bonded to serve as the netconsole's transmit interface. The +# remaining two interfaces are similarly bonded and assigned to a separate +# network namespace, which acts as the receive interface, where socat monitors +# for incoming messages. +# +# A netconsole message is then sent to ensure it is properly received across +# this configuration. +# +# Later, run a few other tests, to make sure that bonding and netconsole +# cannot coexist. +# +# The test's objective is to exercise netpoll usage when managed simultaneously +# by multiple subsystems (netconsole and bonding). +# +# Author: Breno Leitao <leitao@debian.org> + +set -euo pipefail + +SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") + +source "${SCRIPTDIR}"/../lib/sh/lib_netcons.sh + +modprobe netdevsim 2> /dev/null || true +modprobe netconsole 2> /dev/null || true +modprobe bonding 2> /dev/null || true +modprobe veth 2> /dev/null || true + +# The content of kmsg will be save to the following file +OUTPUT_FILE="/tmp/${TARGET}" + +# Check for basic system dependency and exit if not found +check_for_dependencies +# Set current loglevel to KERN_INFO(6), and default to KERN_NOTICE(5) +echo "6 5" > /proc/sys/kernel/printk +# Remove the namespace, interfaces and netconsole target on exit +trap cleanup_bond EXIT + +FORMAT="extended" +IP_VERSION="ipv4" +VETH0="veth"$(( RANDOM % 256)) +VETH1="veth"$((256 + RANDOM % 256)) +TXNS="" +RXNS="" + +# Create "bond_tx_XX" and "bond_rx_XX" interfaces, and set DSTIF and SRCIF with +# the bonding interfaces +function setup_bonding_ifaces() { + local RAND=$(( RANDOM % 100 )) + BOND_TX_MAIN_IF="bond_tx_$RAND" + BOND_RX_MAIN_IF="bond_rx_$RAND" + + # Setup TX + if ! ip -n "${TXNS}" link add "${BOND_TX_MAIN_IF}" type bond mode balance-rr + then + echo "Failed to create bond TX interface. Is CONFIG_BONDING set?" >&2 + # only clean nsim ifaces and namespace. Nothing else has been + # initialized + cleanup_bond_nsim + trap - EXIT + exit "${ksft_skip}" + fi + + # create_netdevsim() got the interface up, but it needs to be down + # before being enslaved. + ip -n "${TXNS}" \ + link set "${BOND_TX1_SLAVE_IF}" down + ip -n "${TXNS}" \ + link set "${BOND_TX2_SLAVE_IF}" down + ip -n "${TXNS}" \ + link set "${BOND_TX1_SLAVE_IF}" master "${BOND_TX_MAIN_IF}" + ip -n "${TXNS}" \ + link set "${BOND_TX2_SLAVE_IF}" master "${BOND_TX_MAIN_IF}" + ip -n "${TXNS}" \ + link set "${BOND_TX_MAIN_IF}" up + + # Setup RX + ip -n "${RXNS}" \ + link add "${BOND_RX_MAIN_IF}" type bond mode balance-rr + ip -n "${RXNS}" \ + link set "${BOND_RX1_SLAVE_IF}" down + ip -n "${RXNS}" \ + link set "${BOND_RX2_SLAVE_IF}" down + ip -n "${RXNS}" \ + link set "${BOND_RX1_SLAVE_IF}" master "${BOND_RX_MAIN_IF}" + ip -n "${RXNS}" \ + link set "${BOND_RX2_SLAVE_IF}" master "${BOND_RX_MAIN_IF}" + ip -n "${RXNS}" \ + link set "${BOND_RX_MAIN_IF}" up + + export DSTIF="${BOND_RX_MAIN_IF}" + export SRCIF="${BOND_TX_MAIN_IF}" +} + +# Create 4 netdevsim interfaces. Two of them will be bound to TX bonding iface +# and the other two will be bond to the RX interface (on the other namespace) +function create_ifaces_bond() { + BOND_TX1_SLAVE_IF=$(create_netdevsim "${NSIM_BOND_TX_1}" "${TXNS}") + BOND_TX2_SLAVE_IF=$(create_netdevsim "${NSIM_BOND_TX_2}" "${TXNS}") + BOND_RX1_SLAVE_IF=$(create_netdevsim "${NSIM_BOND_RX_1}" "${RXNS}") + BOND_RX2_SLAVE_IF=$(create_netdevsim "${NSIM_BOND_RX_2}" "${RXNS}") +} + +# netdevsim link BOND_TX to BOND_RX interfaces +function link_ifaces_bond() { + local BOND_TX1_SLAVE_IFIDX + local BOND_TX2_SLAVE_IFIDX + local BOND_RX1_SLAVE_IFIDX + local BOND_RX2_SLAVE_IFIDX + local TXNS_FD + local RXNS_FD + + BOND_TX1_SLAVE_IFIDX=$(ip netns exec "${TXNS}" \ + cat /sys/class/net/"$BOND_TX1_SLAVE_IF"/ifindex) + BOND_TX2_SLAVE_IFIDX=$(ip netns exec "${TXNS}" \ + cat /sys/class/net/"$BOND_TX2_SLAVE_IF"/ifindex) + BOND_RX1_SLAVE_IFIDX=$(ip netns exec "${RXNS}" \ + cat /sys/class/net/"$BOND_RX1_SLAVE_IF"/ifindex) + BOND_RX2_SLAVE_IFIDX=$(ip netns exec "${RXNS}" \ + cat /sys/class/net/"$BOND_RX2_SLAVE_IF"/ifindex) + + exec {TXNS_FD}</var/run/netns/"${TXNS}" + exec {RXNS_FD}</var/run/netns/"${RXNS}" + + # Linking TX ifaces to the RX ones (on the other namespace) + echo "${TXNS_FD}:$BOND_TX1_SLAVE_IFIDX $RXNS_FD:$BOND_RX1_SLAVE_IFIDX" \ + > "$NSIM_DEV_SYS_LINK" + echo "${TXNS_FD}:$BOND_TX2_SLAVE_IFIDX $RXNS_FD:$BOND_RX2_SLAVE_IFIDX" \ + > "$NSIM_DEV_SYS_LINK" + + exec {TXNS_FD}<&- + exec {RXNS_FD}<&- +} + +function create_all_ifaces() { + # setup_ns function is coming from lib.sh + setup_ns TXNS RXNS + export NAMESPACE="${RXNS}" + + # Create two interfaces for RX and two for TX + create_ifaces_bond + # Link netlink ifaces + link_ifaces_bond +} + +# configure DSTIF and SRCIF IPs +function configure_ifaces_ips() { + local IP_VERSION=${1:-"ipv4"} + select_ipv4_or_ipv6 "${IP_VERSION}" + + ip -n "${RXNS}" addr add "${DSTIP}"/24 dev "${DSTIF}" + ip -n "${RXNS}" link set "${DSTIF}" up + + ip -n "${TXNS}" addr add "${SRCIP}"/24 dev "${SRCIF}" + ip -n "${TXNS}" link set "${SRCIF}" up +} + +function test_enable_netpoll_on_enslaved_iface() { + echo 0 > "${NETCONS_PATH}"/enabled + + # At this stage, BOND_TX1_SLAVE_IF is enslaved to BOND_TX_MAIN_IF, and + # linked to BOND_RX1_SLAVE_IF inside the namespace. + echo "${BOND_TX1_SLAVE_IF}" > "${NETCONS_PATH}"/dev_name + + # This should fail with the following message in dmesg: + # netpoll: netconsole: ethX is a slave device, aborting + set +e + enable_netcons_ns 2> /dev/null + set -e + + if [[ $(cat "${NETCONS_PATH}"/enabled) -eq 1 ]] + then + echo "test failed: Bonding and netpoll cannot co-exists." >&2 + exit "${ksft_fail}" + fi +} + +function test_delete_bond_and_reenable_target() { + ip -n "${TXNS}" \ + link delete "${BOND_TX_MAIN_IF}" type bond + + # BOND_TX1_SLAVE_IF is not attached to a bond interface anymore + # netpoll can be plugged in there + echo "${BOND_TX1_SLAVE_IF}" > "${NETCONS_PATH}"/dev_name + + # this should work, since the interface is not enslaved + enable_netcons_ns + + if [[ $(cat "${NETCONS_PATH}"/enabled) -eq 0 ]] + then + echo "test failed: Unable to start netpoll on an unbond iface." >&2 + exit "${ksft_fail}" + fi +} + +# Send a netconsole message to the netconsole target +function test_send_netcons_msg_through_bond_iface() { + # Listen for netconsole port inside the namespace and + # destination interface + listen_port_and_save_to "${OUTPUT_FILE}" "${IP_VERSION}" & + # Wait for socat to start and listen to the port. + wait_for_port "${RXNS}" "${PORT}" "${IP_VERSION}" + # Send the message + echo "${MSG}: ${TARGET}" > /dev/kmsg + # Wait until socat saves the file to disk + busywait "${BUSYWAIT_TIMEOUT}" test -s "${OUTPUT_FILE}" + # Make sure the message was received in the dst part + # and exit + validate_result "${OUTPUT_FILE}" "${FORMAT}" + # kill socat in case it is still running + pkill_socat +} + +# BOND_TX1_SLAVE_IF has netconsole enabled on it, bind it to BOND_TX_MAIN_IF. +# Given BOND_TX_MAIN_IF was deleted, recreate it first +function test_enslave_netcons_enabled_iface { + # netconsole got disabled while the interface was down + if [[ $(cat "${NETCONS_PATH}"/enabled) -eq 0 ]] + then + echo "test failed: netconsole expected to be enabled against BOND_TX1_SLAVE_IF" >&2 + exit "${ksft_fail}" + fi + + # recreate the bonding iface. it got deleted by previous + # test (test_delete_bond_and_reenable_target) + ip -n "${TXNS}" \ + link add "${BOND_TX_MAIN_IF}" type bond mode balance-rr + + # sub-interface need to be down before attaching to bonding + # This will also disable netconsole. + ip -n "${TXNS}" \ + link set "${BOND_TX1_SLAVE_IF}" down + ip -n "${TXNS}" \ + link set "${BOND_TX1_SLAVE_IF}" master "${BOND_TX_MAIN_IF}" + ip -n "${TXNS}" \ + link set "${BOND_TX_MAIN_IF}" up + + # netconsole got disabled while the interface was down + if [[ $(cat "${NETCONS_PATH}"/enabled) -eq 1 ]] + then + echo "test failed: Device is part of a bond iface, cannot have netcons enabled" >&2 + exit "${ksft_fail}" + fi +} + +# Get netconsole enabled on a bonding interface and attach a second +# sub-interface. +function test_enslave_iface_to_bond { + # BOND_TX_MAIN_IF has only BOND_TX1_SLAVE_IF right now + echo "${BOND_TX_MAIN_IF}" > "${NETCONS_PATH}"/dev_name + enable_netcons_ns + + # netcons is attached to bond0 and BOND_TX1_SLAVE_IF is + # part of BOND_TX_MAIN_IF. Attach BOND_TX2_SLAVE_IF to BOND_TX_MAIN_IF. + ip -n "${TXNS}" \ + link set "${BOND_TX2_SLAVE_IF}" master "${BOND_TX_MAIN_IF}" + if [[ $(cat "${NETCONS_PATH}"/enabled) -eq 0 ]] + then + echo "test failed: Netconsole should be enabled on bonding interface. Failed" >&2 + exit "${ksft_fail}" + fi +} + +function test_enslave_iff_disabled_netpoll_iface { + local ret + + # Create two interfaces. veth interfaces it known to have + # IFF_DISABLE_NETPOLL set + if ! ip link add "${VETH0}" type veth peer name "${VETH1}" + then + echo "Failed to create veth TX interface. Is CONFIG_VETH set?" >&2 + exit "${ksft_skip}" + fi + set +e + # This will print RTNETLINK answers: Device or resource busy + ip link set "${VETH0}" master "${BOND_TX_MAIN_IF}" 2> /dev/null + ret=$? + set -e + if [[ $ret -eq 0 ]] + then + echo "test failed: veth interface could not be enslaved" + exit "${ksft_fail}" + fi +} + +# Given that netconsole picks the current net namespace, we need to enable it +# from inside the TXNS namespace +function enable_netcons_ns() { + ip netns exec "${TXNS}" sh -c \ + "mount -t configfs configfs /sys/kernel/config && echo 1 > $NETCONS_PATH/enabled" +} + +#################### +# Tests start here # +#################### + +# Create regular interfaces using netdevsim and link them +create_all_ifaces + +# Setup the bonding interfaces +# BOND_RX_MAIN_IF has BOND_RX{1,2}_SLAVE_IF +# BOND_TX_MAIN_IF has BOND_TX{1,2}_SLAVE_IF +setup_bonding_ifaces + +# Configure the ips as BOND_RX1_SLAVE_IF and BOND_TX1_SLAVE_IF +configure_ifaces_ips "${IP_VERSION}" + +_create_dynamic_target "${FORMAT}" "${NETCONS_PATH}" +enable_netcons_ns +set_user_data + +# Test #1 : Create an bonding interface and attach netpoll into +# the bonding interface. Netconsole/netpoll should work on +# the bonding interface. +test_send_netcons_msg_through_bond_iface +echo "test #1: netpoll on bonding interface worked. Test passed" >&2 + +# Test #2: Attach netpoll to an enslaved interface +# Try to attach netpoll to an enslaved sub-interface (while still being part of +# a bonding interface), which shouldn't be allowed +test_enable_netpoll_on_enslaved_iface +echo "test #2: netpoll correctly rejected enslaved interface (expected behavior). Test passed." >&2 + +# Test #3: Unplug the sub-interface from bond and enable netconsole +# Detach the interface from a bonding interface and attach netpoll again +test_delete_bond_and_reenable_target +echo "test #3: Able to attach to an unbound interface. Test passed." >&2 + +# Test #4: Enslave a sub-interface that had netconsole enabled +# Try to enslave an interface that has netconsole/netpoll enabled. +# Previous test has netconsole enabled in BOND_TX1_SLAVE_IF, try to enslave it +test_enslave_netcons_enabled_iface +echo "test #4: Enslaving an interface with netpoll attached. Test passed." >&2 + +# Test #5: Enslave a sub-interface to a bonding interface +# Enslave an interface to a bond interface that has netpoll attached +# At this stage, BOND_TX_MAIN_IF is created and BOND_TX1_SLAVE_IF is part of +# it. Netconsole is currently disabled +test_enslave_iface_to_bond +echo "test #5: Enslaving an interface to bond+netpoll. Test passed." >&2 + +# Test #6: Enslave a IFF_DISABLE_NETPOLL sub-interface to a bonding interface +# At this stage, BOND_TX_MAIN_IF has both sub interface and netconsole is +# enabled. This test will try to enslave an a veth (IFF_DISABLE_NETPOLL) interface +# and it should fail, with netpoll: veth0 doesn't support polling +test_enslave_iff_disabled_netpoll_iface +echo "test #6: Enslaving IFF_DISABLE_NETPOLL ifaces to bond iface is not supported. Test passed." >&2 + +cleanup_bond +trap - EXIT +exit "${EXIT_STATUS}" diff --git a/tools/testing/selftests/drivers/net/config b/tools/testing/selftests/drivers/net/config index f6a58ce8a230..77ccf83d87e0 100644 --- a/tools/testing/selftests/drivers/net/config +++ b/tools/testing/selftests/drivers/net/config @@ -1,2 +1,10 @@ +CONFIG_CONFIGFS_FS=y +CONFIG_DEBUG_INFO_BTF=y +CONFIG_DEBUG_INFO_BTF_MODULES=n +CONFIG_INET_PSP=y CONFIG_IPV6=y +CONFIG_NETCONSOLE=m +CONFIG_NETCONSOLE_DYNAMIC=y +CONFIG_NETCONSOLE_EXTENDED_LOG=y CONFIG_NETDEVSIM=m +CONFIG_XDP_SOCKETS=y diff --git a/tools/testing/selftests/drivers/net/dsa/Makefile b/tools/testing/selftests/drivers/net/dsa/Makefile index cd6817fe5be6..7994bd0e5c44 100644 --- a/tools/testing/selftests/drivers/net/dsa/Makefile +++ b/tools/testing/selftests/drivers/net/dsa/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT -TEST_PROGS = bridge_locked_port.sh \ +TEST_PROGS := \ + bridge_locked_port.sh \ bridge_mdb.sh \ bridge_mld.sh \ bridge_vlan_aware.sh \ @@ -9,11 +10,13 @@ TEST_PROGS = bridge_locked_port.sh \ local_termination.sh \ no_forwarding.sh \ tc_actions.sh \ - test_bridge_fdb_stress.sh + test_bridge_fdb_stress.sh \ +# end of TEST_PROGS TEST_FILES := \ + forwarding.config \ run_net_forwarding_test.sh \ - forwarding.config +# end of TEST_FILES TEST_INCLUDES := \ ../../../net/forwarding/bridge_locked_port.sh \ @@ -27,6 +30,7 @@ TEST_INCLUDES := \ ../../../net/forwarding/no_forwarding.sh \ ../../../net/forwarding/tc_actions.sh \ ../../../net/forwarding/tc_common.sh \ - ../../../net/lib.sh + ../../../net/lib.sh \ +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/dsa/tc_taprio.sh b/tools/testing/selftests/drivers/net/dsa/tc_taprio.sh new file mode 120000 index 000000000000..d16a65e7595d --- /dev/null +++ b/tools/testing/selftests/drivers/net/dsa/tc_taprio.sh @@ -0,0 +1 @@ +run_net_forwarding_test.sh
\ No newline at end of file diff --git a/tools/testing/selftests/drivers/net/gro.c b/tools/testing/selftests/drivers/net/gro.c new file mode 100644 index 000000000000..e894037d2e3e --- /dev/null +++ b/tools/testing/selftests/drivers/net/gro.c @@ -0,0 +1,1369 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This testsuite provides conformance testing for GRO coalescing. + * + * Test cases: + * 1.data + * Data packets of the same size and same header setup with correct + * sequence numbers coalesce. The one exception being the last data + * packet coalesced: it can be smaller than the rest and coalesced + * as long as it is in the same flow. + * 2.ack + * Pure ACK does not coalesce. + * 3.flags + * Specific test cases: no packets with PSH, SYN, URG, RST set will + * be coalesced. + * 4.tcp + * Packets with incorrect checksum, non-consecutive seqno and + * different TCP header options shouldn't coalesce. Nit: given that + * some extension headers have paddings, such as timestamp, headers + * that are padding differently would not be coalesced. + * 5.ip: + * Packets with different (ECN, TTL, TOS) header, ip options or + * ip fragments (ipv6) shouldn't coalesce. + * 6.large: + * Packets larger than GRO_MAX_SIZE packets shouldn't coalesce. + * + * MSS is defined as 4096 - header because if it is too small + * (i.e. 1500 MTU - header), it will result in many packets, + * increasing the "large" test case's flakiness. This is because + * due to time sensitivity in the coalescing window, the receiver + * may not coalesce all of the packets. + * + * Note the timing issue applies to all of the test cases, so some + * flakiness is to be expected. + * + */ + +#define _GNU_SOURCE + +#include <arpa/inet.h> +#include <errno.h> +#include <error.h> +#include <getopt.h> +#include <linux/filter.h> +#include <linux/if_packet.h> +#include <linux/ipv6.h> +#include <net/ethernet.h> +#include <net/if.h> +#include <netinet/in.h> +#include <netinet/ip.h> +#include <netinet/ip6.h> +#include <netinet/tcp.h> +#include <stdbool.h> +#include <stddef.h> +#include <stdio.h> +#include <stdarg.h> +#include <string.h> +#include <unistd.h> + +#include "kselftest.h" +#include "../../net/lib/ksft.h" + +#define DPORT 8000 +#define SPORT 1500 +#define PAYLOAD_LEN 100 +#define NUM_PACKETS 4 +#define START_SEQ 100 +#define START_ACK 100 +#define ETH_P_NONE 0 +#define TOTAL_HDR_LEN (ETH_HLEN + sizeof(struct ipv6hdr) + sizeof(struct tcphdr)) +#define MSS (4096 - sizeof(struct tcphdr) - sizeof(struct ipv6hdr)) +#define MAX_PAYLOAD (IP_MAXPACKET - sizeof(struct tcphdr) - sizeof(struct ipv6hdr)) +#define NUM_LARGE_PKT (MAX_PAYLOAD / MSS) +#define MAX_HDR_LEN (ETH_HLEN + sizeof(struct ipv6hdr) + sizeof(struct tcphdr)) +#define MIN_EXTHDR_SIZE 8 +#define EXT_PAYLOAD_1 "\x00\x00\x00\x00\x00\x00" +#define EXT_PAYLOAD_2 "\x11\x11\x11\x11\x11\x11" + +#define ipv6_optlen(p) (((p)->hdrlen+1) << 3) /* calculate IPv6 extension header len */ +#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) + +static const char *addr6_src = "fdaa::2"; +static const char *addr6_dst = "fdaa::1"; +static const char *addr4_src = "192.168.1.200"; +static const char *addr4_dst = "192.168.1.100"; +static int proto = -1; +static uint8_t src_mac[ETH_ALEN], dst_mac[ETH_ALEN]; +static char *testname = "data"; +static char *ifname = "eth0"; +static char *smac = "aa:00:00:00:00:02"; +static char *dmac = "aa:00:00:00:00:01"; +static bool verbose; +static bool tx_socket = true; +static int tcp_offset = -1; +static int total_hdr_len = -1; +static int ethhdr_proto = -1; +static bool ipip; +static const int num_flush_id_cases = 6; + +static void vlog(const char *fmt, ...) +{ + va_list args; + + if (verbose) { + va_start(args, fmt); + vfprintf(stderr, fmt, args); + va_end(args); + } +} + +static void setup_sock_filter(int fd) +{ + const int dport_off = tcp_offset + offsetof(struct tcphdr, dest); + const int ethproto_off = offsetof(struct ethhdr, h_proto); + int optlen = 0; + int ipproto_off, opt_ipproto_off; + int next_off; + + if (ipip) + next_off = sizeof(struct iphdr) + offsetof(struct iphdr, protocol); + else if (proto == PF_INET) + next_off = offsetof(struct iphdr, protocol); + else + next_off = offsetof(struct ipv6hdr, nexthdr); + ipproto_off = ETH_HLEN + next_off; + + /* Overridden later if exthdrs are used: */ + opt_ipproto_off = ipproto_off; + + if (strcmp(testname, "ip") == 0) { + if (proto == PF_INET) + optlen = sizeof(struct ip_timestamp); + else { + BUILD_BUG_ON(sizeof(struct ip6_hbh) > MIN_EXTHDR_SIZE); + BUILD_BUG_ON(sizeof(struct ip6_dest) > MIN_EXTHDR_SIZE); + BUILD_BUG_ON(sizeof(struct ip6_frag) > MIN_EXTHDR_SIZE); + + /* same size for HBH and Fragment extension header types */ + optlen = MIN_EXTHDR_SIZE; + opt_ipproto_off = ETH_HLEN + sizeof(struct ipv6hdr) + + offsetof(struct ip6_ext, ip6e_nxt); + } + } + + /* this filter validates the following: + * - packet is IPv4/IPv6 according to the running test. + * - packet is TCP. Also handles the case of one extension header and then TCP. + * - checks the packet tcp dport equals to DPORT. Also handles the case of one + * extension header and then TCP. + */ + struct sock_filter filter[] = { + BPF_STMT(BPF_LD + BPF_H + BPF_ABS, ethproto_off), + BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, ntohs(ethhdr_proto), 0, 9), + BPF_STMT(BPF_LD + BPF_B + BPF_ABS, ipproto_off), + BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, IPPROTO_TCP, 2, 0), + BPF_STMT(BPF_LD + BPF_B + BPF_ABS, opt_ipproto_off), + BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, IPPROTO_TCP, 0, 5), + BPF_STMT(BPF_LD + BPF_H + BPF_ABS, dport_off), + BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, DPORT, 2, 0), + BPF_STMT(BPF_LD + BPF_H + BPF_ABS, dport_off + optlen), + BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, DPORT, 0, 1), + BPF_STMT(BPF_RET + BPF_K, 0xFFFFFFFF), + BPF_STMT(BPF_RET + BPF_K, 0), + }; + + struct sock_fprog bpf = { + .len = ARRAY_SIZE(filter), + .filter = filter, + }; + + if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &bpf, sizeof(bpf)) < 0) + error(1, errno, "error setting filter"); +} + +static uint32_t checksum_nofold(void *data, size_t len, uint32_t sum) +{ + uint16_t *words = data; + int i; + + for (i = 0; i < len / 2; i++) + sum += words[i]; + if (len & 1) + sum += ((char *)data)[len - 1]; + return sum; +} + +static uint16_t checksum_fold(void *data, size_t len, uint32_t sum) +{ + sum = checksum_nofold(data, len, sum); + while (sum > 0xFFFF) + sum = (sum & 0xFFFF) + (sum >> 16); + return ~sum; +} + +static uint16_t tcp_checksum(void *buf, int payload_len) +{ + struct pseudo_header6 { + struct in6_addr saddr; + struct in6_addr daddr; + uint16_t protocol; + uint16_t payload_len; + } ph6; + struct pseudo_header4 { + struct in_addr saddr; + struct in_addr daddr; + uint16_t protocol; + uint16_t payload_len; + } ph4; + uint32_t sum = 0; + + if (proto == PF_INET6) { + if (inet_pton(AF_INET6, addr6_src, &ph6.saddr) != 1) + error(1, errno, "inet_pton6 source ip pseudo"); + if (inet_pton(AF_INET6, addr6_dst, &ph6.daddr) != 1) + error(1, errno, "inet_pton6 dest ip pseudo"); + ph6.protocol = htons(IPPROTO_TCP); + ph6.payload_len = htons(sizeof(struct tcphdr) + payload_len); + + sum = checksum_nofold(&ph6, sizeof(ph6), 0); + } else if (proto == PF_INET) { + if (inet_pton(AF_INET, addr4_src, &ph4.saddr) != 1) + error(1, errno, "inet_pton source ip pseudo"); + if (inet_pton(AF_INET, addr4_dst, &ph4.daddr) != 1) + error(1, errno, "inet_pton dest ip pseudo"); + ph4.protocol = htons(IPPROTO_TCP); + ph4.payload_len = htons(sizeof(struct tcphdr) + payload_len); + + sum = checksum_nofold(&ph4, sizeof(ph4), 0); + } + + return checksum_fold(buf, sizeof(struct tcphdr) + payload_len, sum); +} + +static void read_MAC(uint8_t *mac_addr, char *mac) +{ + if (sscanf(mac, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", + &mac_addr[0], &mac_addr[1], &mac_addr[2], + &mac_addr[3], &mac_addr[4], &mac_addr[5]) != 6) + error(1, 0, "sscanf"); +} + +static void fill_datalinklayer(void *buf) +{ + struct ethhdr *eth = buf; + + memcpy(eth->h_dest, dst_mac, ETH_ALEN); + memcpy(eth->h_source, src_mac, ETH_ALEN); + eth->h_proto = ethhdr_proto; +} + +static void fill_networklayer(void *buf, int payload_len, int protocol) +{ + struct ipv6hdr *ip6h = buf; + struct iphdr *iph = buf; + + if (proto == PF_INET6) { + memset(ip6h, 0, sizeof(*ip6h)); + + ip6h->version = 6; + ip6h->payload_len = htons(sizeof(struct tcphdr) + payload_len); + ip6h->nexthdr = protocol; + ip6h->hop_limit = 8; + if (inet_pton(AF_INET6, addr6_src, &ip6h->saddr) != 1) + error(1, errno, "inet_pton source ip6"); + if (inet_pton(AF_INET6, addr6_dst, &ip6h->daddr) != 1) + error(1, errno, "inet_pton dest ip6"); + } else if (proto == PF_INET) { + memset(iph, 0, sizeof(*iph)); + + iph->version = 4; + iph->ihl = 5; + iph->ttl = 8; + iph->protocol = protocol; + iph->tot_len = htons(sizeof(struct tcphdr) + + payload_len + sizeof(struct iphdr)); + iph->frag_off = htons(0x4000); /* DF = 1, MF = 0 */ + if (inet_pton(AF_INET, addr4_src, &iph->saddr) != 1) + error(1, errno, "inet_pton source ip"); + if (inet_pton(AF_INET, addr4_dst, &iph->daddr) != 1) + error(1, errno, "inet_pton dest ip"); + iph->check = checksum_fold(buf, sizeof(struct iphdr), 0); + } +} + +static void fill_transportlayer(void *buf, int seq_offset, int ack_offset, + int payload_len, int fin) +{ + struct tcphdr *tcph = buf; + + memset(tcph, 0, sizeof(*tcph)); + + tcph->source = htons(SPORT); + tcph->dest = htons(DPORT); + tcph->seq = ntohl(START_SEQ + seq_offset); + tcph->ack_seq = ntohl(START_ACK + ack_offset); + tcph->ack = 1; + tcph->fin = fin; + tcph->doff = 5; + tcph->window = htons(TCP_MAXWIN); + tcph->urg_ptr = 0; + tcph->check = tcp_checksum(tcph, payload_len); +} + +static void write_packet(int fd, char *buf, int len, struct sockaddr_ll *daddr) +{ + int ret = -1; + + ret = sendto(fd, buf, len, 0, (struct sockaddr *)daddr, sizeof(*daddr)); + if (ret == -1) + error(1, errno, "sendto failure"); + if (ret != len) + error(1, errno, "sendto wrong length"); +} + +static void create_packet(void *buf, int seq_offset, int ack_offset, + int payload_len, int fin) +{ + memset(buf, 0, total_hdr_len); + memset(buf + total_hdr_len, 'a', payload_len); + + fill_transportlayer(buf + tcp_offset, seq_offset, ack_offset, + payload_len, fin); + + if (ipip) { + fill_networklayer(buf + ETH_HLEN, payload_len + sizeof(struct iphdr), + IPPROTO_IPIP); + fill_networklayer(buf + ETH_HLEN + sizeof(struct iphdr), + payload_len, IPPROTO_TCP); + } else { + fill_networklayer(buf + ETH_HLEN, payload_len, IPPROTO_TCP); + } + + fill_datalinklayer(buf); +} + +/* send one extra flag, not first and not last pkt */ +static void send_flags(int fd, struct sockaddr_ll *daddr, int psh, int syn, + int rst, int urg) +{ + static char flag_buf[MAX_HDR_LEN + PAYLOAD_LEN]; + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + int payload_len, pkt_size, flag, i; + struct tcphdr *tcph; + + payload_len = PAYLOAD_LEN * psh; + pkt_size = total_hdr_len + payload_len; + flag = NUM_PACKETS / 2; + + create_packet(flag_buf, flag * payload_len, 0, payload_len, 0); + + tcph = (struct tcphdr *)(flag_buf + tcp_offset); + tcph->psh = psh; + tcph->syn = syn; + tcph->rst = rst; + tcph->urg = urg; + tcph->check = 0; + tcph->check = tcp_checksum(tcph, payload_len); + + for (i = 0; i < NUM_PACKETS + 1; i++) { + if (i == flag) { + write_packet(fd, flag_buf, pkt_size, daddr); + continue; + } + create_packet(buf, i * PAYLOAD_LEN, 0, PAYLOAD_LEN, 0); + write_packet(fd, buf, total_hdr_len + PAYLOAD_LEN, daddr); + } +} + +/* Test for data of same length, smaller than previous + * and of different lengths + */ +static void send_data_pkts(int fd, struct sockaddr_ll *daddr, + int payload_len1, int payload_len2) +{ + static char buf[ETH_HLEN + IP_MAXPACKET]; + + create_packet(buf, 0, 0, payload_len1, 0); + write_packet(fd, buf, total_hdr_len + payload_len1, daddr); + create_packet(buf, payload_len1, 0, payload_len2, 0); + write_packet(fd, buf, total_hdr_len + payload_len2, daddr); +} + +/* If incoming segments make tracked segment length exceed + * legal IP datagram length, do not coalesce + */ +static void send_large(int fd, struct sockaddr_ll *daddr, int remainder) +{ + static char pkts[NUM_LARGE_PKT][TOTAL_HDR_LEN + MSS]; + static char last[TOTAL_HDR_LEN + MSS]; + static char new_seg[TOTAL_HDR_LEN + MSS]; + int i; + + for (i = 0; i < NUM_LARGE_PKT; i++) + create_packet(pkts[i], i * MSS, 0, MSS, 0); + create_packet(last, NUM_LARGE_PKT * MSS, 0, remainder, 0); + create_packet(new_seg, (NUM_LARGE_PKT + 1) * MSS, 0, remainder, 0); + + for (i = 0; i < NUM_LARGE_PKT; i++) + write_packet(fd, pkts[i], total_hdr_len + MSS, daddr); + write_packet(fd, last, total_hdr_len + remainder, daddr); + write_packet(fd, new_seg, total_hdr_len + remainder, daddr); +} + +/* Pure acks and dup acks don't coalesce */ +static void send_ack(int fd, struct sockaddr_ll *daddr) +{ + static char buf[MAX_HDR_LEN]; + + create_packet(buf, 0, 0, 0, 0); + write_packet(fd, buf, total_hdr_len, daddr); + write_packet(fd, buf, total_hdr_len, daddr); + create_packet(buf, 0, 1, 0, 0); + write_packet(fd, buf, total_hdr_len, daddr); +} + +static void recompute_packet(char *buf, char *no_ext, int extlen) +{ + struct tcphdr *tcphdr = (struct tcphdr *)(buf + tcp_offset); + struct ipv6hdr *ip6h = (struct ipv6hdr *)(buf + ETH_HLEN); + struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN); + + memmove(buf, no_ext, total_hdr_len); + memmove(buf + total_hdr_len + extlen, + no_ext + total_hdr_len, PAYLOAD_LEN); + + tcphdr->doff = tcphdr->doff + (extlen / 4); + tcphdr->check = 0; + tcphdr->check = tcp_checksum(tcphdr, PAYLOAD_LEN + extlen); + if (proto == PF_INET) { + iph->tot_len = htons(ntohs(iph->tot_len) + extlen); + iph->check = 0; + iph->check = checksum_fold(iph, sizeof(struct iphdr), 0); + + if (ipip) { + iph += 1; + iph->tot_len = htons(ntohs(iph->tot_len) + extlen); + iph->check = 0; + iph->check = checksum_fold(iph, sizeof(struct iphdr), 0); + } + } else { + ip6h->payload_len = htons(ntohs(ip6h->payload_len) + extlen); + } +} + +static void tcp_write_options(char *buf, int kind, int ts) +{ + struct tcp_option_ts { + uint8_t kind; + uint8_t len; + uint32_t tsval; + uint32_t tsecr; + } *opt_ts = (void *)buf; + struct tcp_option_window { + uint8_t kind; + uint8_t len; + uint8_t shift; + } *opt_window = (void *)buf; + + switch (kind) { + case TCPOPT_NOP: + buf[0] = TCPOPT_NOP; + break; + case TCPOPT_WINDOW: + memset(opt_window, 0, sizeof(struct tcp_option_window)); + opt_window->kind = TCPOPT_WINDOW; + opt_window->len = TCPOLEN_WINDOW; + opt_window->shift = 0; + break; + case TCPOPT_TIMESTAMP: + memset(opt_ts, 0, sizeof(struct tcp_option_ts)); + opt_ts->kind = TCPOPT_TIMESTAMP; + opt_ts->len = TCPOLEN_TIMESTAMP; + opt_ts->tsval = ts; + opt_ts->tsecr = 0; + break; + default: + error(1, 0, "unimplemented TCP option"); + break; + } +} + +/* TCP with options is always a permutation of {TS, NOP, NOP}. + * Implement different orders to verify coalescing stops. + */ +static void add_standard_tcp_options(char *buf, char *no_ext, int ts, int order) +{ + switch (order) { + case 0: + tcp_write_options(buf + total_hdr_len, TCPOPT_NOP, 0); + tcp_write_options(buf + total_hdr_len + 1, TCPOPT_NOP, 0); + tcp_write_options(buf + total_hdr_len + 2 /* two NOP opts */, + TCPOPT_TIMESTAMP, ts); + break; + case 1: + tcp_write_options(buf + total_hdr_len, TCPOPT_NOP, 0); + tcp_write_options(buf + total_hdr_len + 1, + TCPOPT_TIMESTAMP, ts); + tcp_write_options(buf + total_hdr_len + 1 + TCPOLEN_TIMESTAMP, + TCPOPT_NOP, 0); + break; + case 2: + tcp_write_options(buf + total_hdr_len, TCPOPT_TIMESTAMP, ts); + tcp_write_options(buf + total_hdr_len + TCPOLEN_TIMESTAMP + 1, + TCPOPT_NOP, 0); + tcp_write_options(buf + total_hdr_len + TCPOLEN_TIMESTAMP + 2, + TCPOPT_NOP, 0); + break; + default: + error(1, 0, "unknown order"); + break; + } + recompute_packet(buf, no_ext, TCPOLEN_TSTAMP_APPA); +} + +/* Packets with invalid checksum don't coalesce. */ +static void send_changed_checksum(int fd, struct sockaddr_ll *daddr) +{ + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + struct tcphdr *tcph = (struct tcphdr *)(buf + tcp_offset); + int pkt_size = total_hdr_len + PAYLOAD_LEN; + + create_packet(buf, 0, 0, PAYLOAD_LEN, 0); + write_packet(fd, buf, pkt_size, daddr); + + create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0); + tcph->check = tcph->check - 1; + write_packet(fd, buf, pkt_size, daddr); +} + + /* Packets with non-consecutive sequence number don't coalesce.*/ +static void send_changed_seq(int fd, struct sockaddr_ll *daddr) +{ + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + struct tcphdr *tcph = (struct tcphdr *)(buf + tcp_offset); + int pkt_size = total_hdr_len + PAYLOAD_LEN; + + create_packet(buf, 0, 0, PAYLOAD_LEN, 0); + write_packet(fd, buf, pkt_size, daddr); + + create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0); + tcph->seq = ntohl(htonl(tcph->seq) + 1); + tcph->check = 0; + tcph->check = tcp_checksum(tcph, PAYLOAD_LEN); + write_packet(fd, buf, pkt_size, daddr); +} + + /* Packet with different timestamp option or different timestamps + * don't coalesce. + */ +static void send_changed_ts(int fd, struct sockaddr_ll *daddr) +{ + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + static char extpkt[sizeof(buf) + TCPOLEN_TSTAMP_APPA]; + int pkt_size = total_hdr_len + PAYLOAD_LEN + TCPOLEN_TSTAMP_APPA; + + create_packet(buf, 0, 0, PAYLOAD_LEN, 0); + add_standard_tcp_options(extpkt, buf, 0, 0); + write_packet(fd, extpkt, pkt_size, daddr); + + create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0); + add_standard_tcp_options(extpkt, buf, 0, 0); + write_packet(fd, extpkt, pkt_size, daddr); + + create_packet(buf, PAYLOAD_LEN * 2, 0, PAYLOAD_LEN, 0); + add_standard_tcp_options(extpkt, buf, 100, 0); + write_packet(fd, extpkt, pkt_size, daddr); + + create_packet(buf, PAYLOAD_LEN * 3, 0, PAYLOAD_LEN, 0); + add_standard_tcp_options(extpkt, buf, 100, 1); + write_packet(fd, extpkt, pkt_size, daddr); + + create_packet(buf, PAYLOAD_LEN * 4, 0, PAYLOAD_LEN, 0); + add_standard_tcp_options(extpkt, buf, 100, 2); + write_packet(fd, extpkt, pkt_size, daddr); +} + +/* Packet with different tcp options don't coalesce. */ +static void send_diff_opt(int fd, struct sockaddr_ll *daddr) +{ + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + static char extpkt1[sizeof(buf) + TCPOLEN_TSTAMP_APPA]; + static char extpkt2[sizeof(buf) + TCPOLEN_MAXSEG]; + int extpkt1_size = total_hdr_len + PAYLOAD_LEN + TCPOLEN_TSTAMP_APPA; + int extpkt2_size = total_hdr_len + PAYLOAD_LEN + TCPOLEN_MAXSEG; + + create_packet(buf, 0, 0, PAYLOAD_LEN, 0); + add_standard_tcp_options(extpkt1, buf, 0, 0); + write_packet(fd, extpkt1, extpkt1_size, daddr); + + create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0); + add_standard_tcp_options(extpkt1, buf, 0, 0); + write_packet(fd, extpkt1, extpkt1_size, daddr); + + create_packet(buf, PAYLOAD_LEN * 2, 0, PAYLOAD_LEN, 0); + tcp_write_options(extpkt2 + MAX_HDR_LEN, TCPOPT_NOP, 0); + tcp_write_options(extpkt2 + MAX_HDR_LEN + 1, TCPOPT_WINDOW, 0); + recompute_packet(extpkt2, buf, TCPOLEN_WINDOW + 1); + write_packet(fd, extpkt2, extpkt2_size, daddr); +} + +static void add_ipv4_ts_option(void *buf, void *optpkt) +{ + struct ip_timestamp *ts = (struct ip_timestamp *)(optpkt + tcp_offset); + int optlen = sizeof(struct ip_timestamp); + struct iphdr *iph; + + if (optlen % 4) + error(1, 0, "ipv4 timestamp length is not a multiple of 4B"); + + ts->ipt_code = IPOPT_TS; + ts->ipt_len = optlen; + ts->ipt_ptr = 5; + ts->ipt_flg = IPOPT_TS_TSONLY; + + memcpy(optpkt, buf, tcp_offset); + memcpy(optpkt + tcp_offset + optlen, buf + tcp_offset, + sizeof(struct tcphdr) + PAYLOAD_LEN); + + iph = (struct iphdr *)(optpkt + ETH_HLEN); + iph->ihl = 5 + (optlen / 4); + iph->tot_len = htons(ntohs(iph->tot_len) + optlen); + iph->check = 0; + iph->check = checksum_fold(iph, sizeof(struct iphdr) + optlen, 0); +} + +static void add_ipv6_exthdr(void *buf, void *optpkt, __u8 exthdr_type, char *ext_payload) +{ + struct ipv6_opt_hdr *exthdr = (struct ipv6_opt_hdr *)(optpkt + tcp_offset); + struct ipv6hdr *iph = (struct ipv6hdr *)(optpkt + ETH_HLEN); + char *exthdr_payload_start = (char *)(exthdr + 1); + + exthdr->hdrlen = 0; + exthdr->nexthdr = IPPROTO_TCP; + + memcpy(exthdr_payload_start, ext_payload, MIN_EXTHDR_SIZE - sizeof(*exthdr)); + + memcpy(optpkt, buf, tcp_offset); + memcpy(optpkt + tcp_offset + MIN_EXTHDR_SIZE, buf + tcp_offset, + sizeof(struct tcphdr) + PAYLOAD_LEN); + + iph->nexthdr = exthdr_type; + iph->payload_len = htons(ntohs(iph->payload_len) + MIN_EXTHDR_SIZE); +} + +static void fix_ip4_checksum(struct iphdr *iph) +{ + iph->check = 0; + iph->check = checksum_fold(iph, sizeof(struct iphdr), 0); +} + +static void send_flush_id_case(int fd, struct sockaddr_ll *daddr, int tcase) +{ + static char buf1[MAX_HDR_LEN + PAYLOAD_LEN]; + static char buf2[MAX_HDR_LEN + PAYLOAD_LEN]; + static char buf3[MAX_HDR_LEN + PAYLOAD_LEN]; + bool send_three = false; + struct iphdr *iph1; + struct iphdr *iph2; + struct iphdr *iph3; + + iph1 = (struct iphdr *)(buf1 + ETH_HLEN); + iph2 = (struct iphdr *)(buf2 + ETH_HLEN); + iph3 = (struct iphdr *)(buf3 + ETH_HLEN); + + create_packet(buf1, 0, 0, PAYLOAD_LEN, 0); + create_packet(buf2, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0); + create_packet(buf3, PAYLOAD_LEN * 2, 0, PAYLOAD_LEN, 0); + + switch (tcase) { + case 0: /* DF=1, Incrementing - should coalesce */ + iph1->frag_off |= htons(IP_DF); + iph1->id = htons(8); + + iph2->frag_off |= htons(IP_DF); + iph2->id = htons(9); + break; + + case 1: /* DF=1, Fixed - should coalesce */ + iph1->frag_off |= htons(IP_DF); + iph1->id = htons(8); + + iph2->frag_off |= htons(IP_DF); + iph2->id = htons(8); + break; + + case 2: /* DF=0, Incrementing - should coalesce */ + iph1->frag_off &= ~htons(IP_DF); + iph1->id = htons(8); + + iph2->frag_off &= ~htons(IP_DF); + iph2->id = htons(9); + break; + + case 3: /* DF=0, Fixed - should coalesce */ + iph1->frag_off &= ~htons(IP_DF); + iph1->id = htons(8); + + iph2->frag_off &= ~htons(IP_DF); + iph2->id = htons(8); + break; + + case 4: /* DF=1, two packets incrementing, and one fixed - should + * coalesce only the first two packets + */ + iph1->frag_off |= htons(IP_DF); + iph1->id = htons(8); + + iph2->frag_off |= htons(IP_DF); + iph2->id = htons(9); + + iph3->frag_off |= htons(IP_DF); + iph3->id = htons(9); + send_three = true; + break; + + case 5: /* DF=1, two packets fixed, and one incrementing - should + * coalesce only the first two packets + */ + iph1->frag_off |= htons(IP_DF); + iph1->id = htons(8); + + iph2->frag_off |= htons(IP_DF); + iph2->id = htons(8); + + iph3->frag_off |= htons(IP_DF); + iph3->id = htons(9); + send_three = true; + break; + } + + fix_ip4_checksum(iph1); + fix_ip4_checksum(iph2); + write_packet(fd, buf1, total_hdr_len + PAYLOAD_LEN, daddr); + write_packet(fd, buf2, total_hdr_len + PAYLOAD_LEN, daddr); + + if (send_three) { + fix_ip4_checksum(iph3); + write_packet(fd, buf3, total_hdr_len + PAYLOAD_LEN, daddr); + } +} + +static void test_flush_id(int fd, struct sockaddr_ll *daddr, char *fin_pkt) +{ + for (int i = 0; i < num_flush_id_cases; i++) { + sleep(1); + send_flush_id_case(fd, daddr, i); + sleep(1); + write_packet(fd, fin_pkt, total_hdr_len, daddr); + } +} + +static void send_ipv6_exthdr(int fd, struct sockaddr_ll *daddr, char *ext_data1, char *ext_data2) +{ + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + static char exthdr_pck[sizeof(buf) + MIN_EXTHDR_SIZE]; + + create_packet(buf, 0, 0, PAYLOAD_LEN, 0); + add_ipv6_exthdr(buf, exthdr_pck, IPPROTO_DSTOPTS, ext_data1); + write_packet(fd, exthdr_pck, total_hdr_len + PAYLOAD_LEN + MIN_EXTHDR_SIZE, daddr); + + create_packet(buf, PAYLOAD_LEN * 1, 0, PAYLOAD_LEN, 0); + add_ipv6_exthdr(buf, exthdr_pck, IPPROTO_DSTOPTS, ext_data2); + write_packet(fd, exthdr_pck, total_hdr_len + PAYLOAD_LEN + MIN_EXTHDR_SIZE, daddr); +} + +/* IPv4 options shouldn't coalesce */ +static void send_ip_options(int fd, struct sockaddr_ll *daddr) +{ + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + static char optpkt[sizeof(buf) + sizeof(struct ip_timestamp)]; + int optlen = sizeof(struct ip_timestamp); + int pkt_size = total_hdr_len + PAYLOAD_LEN + optlen; + + create_packet(buf, 0, 0, PAYLOAD_LEN, 0); + write_packet(fd, buf, total_hdr_len + PAYLOAD_LEN, daddr); + + create_packet(buf, PAYLOAD_LEN * 1, 0, PAYLOAD_LEN, 0); + add_ipv4_ts_option(buf, optpkt); + write_packet(fd, optpkt, pkt_size, daddr); + + create_packet(buf, PAYLOAD_LEN * 2, 0, PAYLOAD_LEN, 0); + write_packet(fd, buf, total_hdr_len + PAYLOAD_LEN, daddr); +} + +/* IPv4 fragments shouldn't coalesce */ +static void send_fragment4(int fd, struct sockaddr_ll *daddr) +{ + static char buf[IP_MAXPACKET]; + struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN); + int pkt_size = total_hdr_len + PAYLOAD_LEN; + + create_packet(buf, 0, 0, PAYLOAD_LEN, 0); + write_packet(fd, buf, pkt_size, daddr); + + /* Once fragmented, packet would retain the total_len. + * Tcp header is prepared as if rest of data is in follow-up frags, + * but follow up frags aren't actually sent. + */ + memset(buf + total_hdr_len, 'a', PAYLOAD_LEN * 2); + fill_transportlayer(buf + tcp_offset, PAYLOAD_LEN, 0, PAYLOAD_LEN * 2, 0); + fill_networklayer(buf + ETH_HLEN, PAYLOAD_LEN, IPPROTO_TCP); + fill_datalinklayer(buf); + + iph->frag_off = htons(0x6000); // DF = 1, MF = 1 + iph->check = 0; + iph->check = checksum_fold(iph, sizeof(struct iphdr), 0); + write_packet(fd, buf, pkt_size, daddr); +} + +/* IPv4 packets with different ttl don't coalesce.*/ +static void send_changed_ttl(int fd, struct sockaddr_ll *daddr) +{ + int pkt_size = total_hdr_len + PAYLOAD_LEN; + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN); + + create_packet(buf, 0, 0, PAYLOAD_LEN, 0); + write_packet(fd, buf, pkt_size, daddr); + + create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0); + iph->ttl = 7; + iph->check = 0; + iph->check = checksum_fold(iph, sizeof(struct iphdr), 0); + write_packet(fd, buf, pkt_size, daddr); +} + +/* Packets with different tos don't coalesce.*/ +static void send_changed_tos(int fd, struct sockaddr_ll *daddr) +{ + int pkt_size = total_hdr_len + PAYLOAD_LEN; + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN); + struct ipv6hdr *ip6h = (struct ipv6hdr *)(buf + ETH_HLEN); + + create_packet(buf, 0, 0, PAYLOAD_LEN, 0); + write_packet(fd, buf, pkt_size, daddr); + + create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0); + if (proto == PF_INET) { + iph->tos = 1; + iph->check = 0; + iph->check = checksum_fold(iph, sizeof(struct iphdr), 0); + } else if (proto == PF_INET6) { + ip6h->priority = 0xf; + } + write_packet(fd, buf, pkt_size, daddr); +} + +/* Packets with different ECN don't coalesce.*/ +static void send_changed_ECN(int fd, struct sockaddr_ll *daddr) +{ + int pkt_size = total_hdr_len + PAYLOAD_LEN; + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN); + + create_packet(buf, 0, 0, PAYLOAD_LEN, 0); + write_packet(fd, buf, pkt_size, daddr); + + create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0); + if (proto == PF_INET) { + buf[ETH_HLEN + 1] ^= 0x2; // ECN set to 10 + iph->check = 0; + iph->check = checksum_fold(iph, sizeof(struct iphdr), 0); + } else { + buf[ETH_HLEN + 1] ^= 0x20; // ECN set to 10 + } + write_packet(fd, buf, pkt_size, daddr); +} + +/* IPv6 fragments and packets with extensions don't coalesce.*/ +static void send_fragment6(int fd, struct sockaddr_ll *daddr) +{ + static char buf[MAX_HDR_LEN + PAYLOAD_LEN]; + static char extpkt[MAX_HDR_LEN + PAYLOAD_LEN + + sizeof(struct ip6_frag)]; + struct ipv6hdr *ip6h = (struct ipv6hdr *)(buf + ETH_HLEN); + struct ip6_frag *frag = (void *)(extpkt + tcp_offset); + int extlen = sizeof(struct ip6_frag); + int bufpkt_len = total_hdr_len + PAYLOAD_LEN; + int extpkt_len = bufpkt_len + extlen; + int i; + + for (i = 0; i < 2; i++) { + create_packet(buf, PAYLOAD_LEN * i, 0, PAYLOAD_LEN, 0); + write_packet(fd, buf, bufpkt_len, daddr); + } + sleep(1); + create_packet(buf, PAYLOAD_LEN * 2, 0, PAYLOAD_LEN, 0); + memset(extpkt, 0, extpkt_len); + + ip6h->nexthdr = IPPROTO_FRAGMENT; + ip6h->payload_len = htons(ntohs(ip6h->payload_len) + extlen); + frag->ip6f_nxt = IPPROTO_TCP; + + memcpy(extpkt, buf, tcp_offset); + memcpy(extpkt + tcp_offset + extlen, buf + tcp_offset, + sizeof(struct tcphdr) + PAYLOAD_LEN); + write_packet(fd, extpkt, extpkt_len, daddr); + + create_packet(buf, PAYLOAD_LEN * 3, 0, PAYLOAD_LEN, 0); + write_packet(fd, buf, bufpkt_len, daddr); +} + +static void bind_packetsocket(int fd) +{ + struct sockaddr_ll daddr = {}; + + daddr.sll_family = AF_PACKET; + daddr.sll_protocol = ethhdr_proto; + daddr.sll_ifindex = if_nametoindex(ifname); + if (daddr.sll_ifindex == 0) + error(1, errno, "if_nametoindex"); + + if (bind(fd, (void *)&daddr, sizeof(daddr)) < 0) + error(1, errno, "could not bind socket"); +} + +static void set_timeout(int fd) +{ + struct timeval timeout; + + timeout.tv_sec = 3; + timeout.tv_usec = 0; + if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout, + sizeof(timeout)) < 0) + error(1, errno, "cannot set timeout, setsockopt failed"); +} + +static void check_recv_pkts(int fd, int *correct_payload, + int correct_num_pkts) +{ + static char buffer[IP_MAXPACKET + ETH_HLEN + 1]; + struct iphdr *iph = (struct iphdr *)(buffer + ETH_HLEN); + struct ipv6hdr *ip6h = (struct ipv6hdr *)(buffer + ETH_HLEN); + struct tcphdr *tcph; + bool bad_packet = false; + int tcp_ext_len = 0; + int ip_ext_len = 0; + int pkt_size = -1; + int data_len = 0; + int num_pkt = 0; + int i; + + vlog("Expected {"); + for (i = 0; i < correct_num_pkts; i++) + vlog("%d ", correct_payload[i]); + vlog("}, Total %d packets\nReceived {", correct_num_pkts); + + while (1) { + ip_ext_len = 0; + pkt_size = recv(fd, buffer, IP_MAXPACKET + ETH_HLEN + 1, 0); + if (pkt_size < 0) + error(1, errno, "could not receive"); + + if (iph->version == 4) + ip_ext_len = (iph->ihl - 5) * 4; + else if (ip6h->version == 6 && ip6h->nexthdr != IPPROTO_TCP) + ip_ext_len = MIN_EXTHDR_SIZE; + + tcph = (struct tcphdr *)(buffer + tcp_offset + ip_ext_len); + + if (tcph->fin) + break; + + tcp_ext_len = (tcph->doff - 5) * 4; + data_len = pkt_size - total_hdr_len - tcp_ext_len - ip_ext_len; + /* Min ethernet frame payload is 46(ETH_ZLEN - ETH_HLEN) by RFC 802.3. + * Ipv4/tcp packets without at least 6 bytes of data will be padded. + * Packet sockets are protocol agnostic, and will not trim the padding. + */ + if (pkt_size == ETH_ZLEN && iph->version == 4) { + data_len = ntohs(iph->tot_len) + - sizeof(struct tcphdr) - sizeof(struct iphdr); + } + vlog("%d ", data_len); + if (data_len != correct_payload[num_pkt]) { + vlog("[!=%d]", correct_payload[num_pkt]); + bad_packet = true; + } + num_pkt++; + } + vlog("}, Total %d packets.\n", num_pkt); + if (num_pkt != correct_num_pkts) + error(1, 0, "incorrect number of packets"); + if (bad_packet) + error(1, 0, "incorrect packet geometry"); + + printf("Test succeeded\n\n"); +} + +static void gro_sender(void) +{ + const int fin_delay_us = 100 * 1000; + static char fin_pkt[MAX_HDR_LEN]; + struct sockaddr_ll daddr = {}; + int txfd = -1; + + txfd = socket(PF_PACKET, SOCK_RAW, IPPROTO_RAW); + if (txfd < 0) + error(1, errno, "socket creation"); + + memset(&daddr, 0, sizeof(daddr)); + daddr.sll_ifindex = if_nametoindex(ifname); + if (daddr.sll_ifindex == 0) + error(1, errno, "if_nametoindex"); + daddr.sll_family = AF_PACKET; + memcpy(daddr.sll_addr, dst_mac, ETH_ALEN); + daddr.sll_halen = ETH_ALEN; + create_packet(fin_pkt, PAYLOAD_LEN * 2, 0, 0, 1); + + if (strcmp(testname, "data") == 0) { + send_data_pkts(txfd, &daddr, PAYLOAD_LEN, PAYLOAD_LEN); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + send_data_pkts(txfd, &daddr, PAYLOAD_LEN, PAYLOAD_LEN / 2); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + send_data_pkts(txfd, &daddr, PAYLOAD_LEN / 2, PAYLOAD_LEN); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + } else if (strcmp(testname, "ack") == 0) { + send_ack(txfd, &daddr); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + } else if (strcmp(testname, "flags") == 0) { + send_flags(txfd, &daddr, 1, 0, 0, 0); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + send_flags(txfd, &daddr, 0, 1, 0, 0); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + send_flags(txfd, &daddr, 0, 0, 1, 0); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + send_flags(txfd, &daddr, 0, 0, 0, 1); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + } else if (strcmp(testname, "tcp") == 0) { + send_changed_checksum(txfd, &daddr); + /* Adding sleep before sending FIN so that it is not + * received prior to other packets. + */ + usleep(fin_delay_us); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + send_changed_seq(txfd, &daddr); + usleep(fin_delay_us); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + send_changed_ts(txfd, &daddr); + usleep(fin_delay_us); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + send_diff_opt(txfd, &daddr); + usleep(fin_delay_us); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + } else if (strcmp(testname, "ip") == 0) { + send_changed_ECN(txfd, &daddr); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + send_changed_tos(txfd, &daddr); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + if (proto == PF_INET) { + /* Modified packets may be received out of order. + * Sleep function added to enforce test boundaries + * so that fin pkts are not received prior to other pkts. + */ + sleep(1); + send_changed_ttl(txfd, &daddr); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + sleep(1); + send_ip_options(txfd, &daddr); + sleep(1); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + sleep(1); + send_fragment4(txfd, &daddr); + sleep(1); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + test_flush_id(txfd, &daddr, fin_pkt); + } else if (proto == PF_INET6) { + sleep(1); + send_fragment6(txfd, &daddr); + sleep(1); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + sleep(1); + /* send IPv6 packets with ext header with same payload */ + send_ipv6_exthdr(txfd, &daddr, EXT_PAYLOAD_1, EXT_PAYLOAD_1); + sleep(1); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + sleep(1); + /* send IPv6 packets with ext header with different payload */ + send_ipv6_exthdr(txfd, &daddr, EXT_PAYLOAD_1, EXT_PAYLOAD_2); + sleep(1); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + } + } else if (strcmp(testname, "large") == 0) { + /* 20 is the difference between min iphdr size + * and min ipv6hdr size. Like MAX_HDR_SIZE, + * MAX_PAYLOAD is defined with the larger header of the two. + */ + int offset = (proto == PF_INET && !ipip) ? 20 : 0; + int remainder = (MAX_PAYLOAD + offset) % MSS; + + send_large(txfd, &daddr, remainder); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + + send_large(txfd, &daddr, remainder + 1); + write_packet(txfd, fin_pkt, total_hdr_len, &daddr); + } else { + error(1, 0, "Unknown testcase"); + } + + if (close(txfd)) + error(1, errno, "socket close"); +} + +static void gro_receiver(void) +{ + static int correct_payload[NUM_PACKETS]; + int rxfd = -1; + + rxfd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_NONE)); + if (rxfd < 0) + error(1, 0, "socket creation"); + setup_sock_filter(rxfd); + set_timeout(rxfd); + bind_packetsocket(rxfd); + + ksft_ready(); + + memset(correct_payload, 0, sizeof(correct_payload)); + + if (strcmp(testname, "data") == 0) { + printf("pure data packet of same size: "); + correct_payload[0] = PAYLOAD_LEN * 2; + check_recv_pkts(rxfd, correct_payload, 1); + + printf("large data packets followed by a smaller one: "); + correct_payload[0] = PAYLOAD_LEN * 1.5; + check_recv_pkts(rxfd, correct_payload, 1); + + printf("small data packets followed by a larger one: "); + correct_payload[0] = PAYLOAD_LEN / 2; + correct_payload[1] = PAYLOAD_LEN; + check_recv_pkts(rxfd, correct_payload, 2); + } else if (strcmp(testname, "ack") == 0) { + printf("duplicate ack and pure ack: "); + check_recv_pkts(rxfd, correct_payload, 3); + } else if (strcmp(testname, "flags") == 0) { + correct_payload[0] = PAYLOAD_LEN * 3; + correct_payload[1] = PAYLOAD_LEN * 2; + + printf("psh flag ends coalescing: "); + check_recv_pkts(rxfd, correct_payload, 2); + + correct_payload[0] = PAYLOAD_LEN * 2; + correct_payload[1] = 0; + correct_payload[2] = PAYLOAD_LEN * 2; + printf("syn flag ends coalescing: "); + check_recv_pkts(rxfd, correct_payload, 3); + + printf("rst flag ends coalescing: "); + check_recv_pkts(rxfd, correct_payload, 3); + + printf("urg flag ends coalescing: "); + check_recv_pkts(rxfd, correct_payload, 3); + } else if (strcmp(testname, "tcp") == 0) { + correct_payload[0] = PAYLOAD_LEN; + correct_payload[1] = PAYLOAD_LEN; + correct_payload[2] = PAYLOAD_LEN; + correct_payload[3] = PAYLOAD_LEN; + + printf("changed checksum does not coalesce: "); + check_recv_pkts(rxfd, correct_payload, 2); + + printf("Wrong Seq number doesn't coalesce: "); + check_recv_pkts(rxfd, correct_payload, 2); + + printf("Different timestamp doesn't coalesce: "); + correct_payload[0] = PAYLOAD_LEN * 2; + check_recv_pkts(rxfd, correct_payload, 4); + + printf("Different options doesn't coalesce: "); + correct_payload[0] = PAYLOAD_LEN * 2; + check_recv_pkts(rxfd, correct_payload, 2); + } else if (strcmp(testname, "ip") == 0) { + correct_payload[0] = PAYLOAD_LEN; + correct_payload[1] = PAYLOAD_LEN; + + printf("different ECN doesn't coalesce: "); + check_recv_pkts(rxfd, correct_payload, 2); + + printf("different tos doesn't coalesce: "); + check_recv_pkts(rxfd, correct_payload, 2); + + if (proto == PF_INET) { + printf("different ttl doesn't coalesce: "); + check_recv_pkts(rxfd, correct_payload, 2); + + printf("ip options doesn't coalesce: "); + correct_payload[2] = PAYLOAD_LEN; + check_recv_pkts(rxfd, correct_payload, 3); + + printf("fragmented ip4 doesn't coalesce: "); + check_recv_pkts(rxfd, correct_payload, 2); + + /* is_atomic checks */ + printf("DF=1, Incrementing - should coalesce: "); + correct_payload[0] = PAYLOAD_LEN * 2; + check_recv_pkts(rxfd, correct_payload, 1); + + printf("DF=1, Fixed - should coalesce: "); + correct_payload[0] = PAYLOAD_LEN * 2; + check_recv_pkts(rxfd, correct_payload, 1); + + printf("DF=0, Incrementing - should coalesce: "); + correct_payload[0] = PAYLOAD_LEN * 2; + check_recv_pkts(rxfd, correct_payload, 1); + + printf("DF=0, Fixed - should coalesce: "); + correct_payload[0] = PAYLOAD_LEN * 2; + check_recv_pkts(rxfd, correct_payload, 1); + + printf("DF=1, 2 Incrementing and one fixed - should coalesce only first 2 packets: "); + correct_payload[0] = PAYLOAD_LEN * 2; + correct_payload[1] = PAYLOAD_LEN; + check_recv_pkts(rxfd, correct_payload, 2); + + printf("DF=1, 2 Fixed and one incrementing - should coalesce only first 2 packets: "); + correct_payload[0] = PAYLOAD_LEN * 2; + correct_payload[1] = PAYLOAD_LEN; + check_recv_pkts(rxfd, correct_payload, 2); + } else if (proto == PF_INET6) { + /* GRO doesn't check for ipv6 hop limit when flushing. + * Hence no corresponding test to the ipv4 case. + */ + printf("fragmented ip6 doesn't coalesce: "); + correct_payload[0] = PAYLOAD_LEN * 2; + correct_payload[1] = PAYLOAD_LEN; + correct_payload[2] = PAYLOAD_LEN; + check_recv_pkts(rxfd, correct_payload, 3); + + printf("ipv6 with ext header does coalesce: "); + correct_payload[0] = PAYLOAD_LEN * 2; + check_recv_pkts(rxfd, correct_payload, 1); + + printf("ipv6 with ext header with different payloads doesn't coalesce: "); + correct_payload[0] = PAYLOAD_LEN; + correct_payload[1] = PAYLOAD_LEN; + check_recv_pkts(rxfd, correct_payload, 2); + } + } else if (strcmp(testname, "large") == 0) { + int offset = (proto == PF_INET && !ipip) ? 20 : 0; + int remainder = (MAX_PAYLOAD + offset) % MSS; + + correct_payload[0] = (MAX_PAYLOAD + offset); + correct_payload[1] = remainder; + printf("Shouldn't coalesce if exceed IP max pkt size: "); + check_recv_pkts(rxfd, correct_payload, 2); + + /* last segment sent individually, doesn't start new segment */ + correct_payload[0] = correct_payload[0] - remainder; + correct_payload[1] = remainder + 1; + correct_payload[2] = remainder + 1; + check_recv_pkts(rxfd, correct_payload, 3); + } else { + error(1, 0, "Test case error, should never trigger"); + } + + if (close(rxfd)) + error(1, 0, "socket close"); +} + +static void parse_args(int argc, char **argv) +{ + static const struct option opts[] = { + { "daddr", required_argument, NULL, 'd' }, + { "dmac", required_argument, NULL, 'D' }, + { "iface", required_argument, NULL, 'i' }, + { "ipv4", no_argument, NULL, '4' }, + { "ipv6", no_argument, NULL, '6' }, + { "ipip", no_argument, NULL, 'e' }, + { "rx", no_argument, NULL, 'r' }, + { "saddr", required_argument, NULL, 's' }, + { "smac", required_argument, NULL, 'S' }, + { "test", required_argument, NULL, 't' }, + { "verbose", no_argument, NULL, 'v' }, + { 0, 0, 0, 0 } + }; + int c; + + while ((c = getopt_long(argc, argv, "46d:D:ei:rs:S:t:v", opts, NULL)) != -1) { + switch (c) { + case '4': + proto = PF_INET; + ethhdr_proto = htons(ETH_P_IP); + break; + case '6': + proto = PF_INET6; + ethhdr_proto = htons(ETH_P_IPV6); + break; + case 'e': + ipip = true; + proto = PF_INET; + ethhdr_proto = htons(ETH_P_IP); + break; + case 'd': + addr4_dst = addr6_dst = optarg; + break; + case 'D': + dmac = optarg; + break; + case 'i': + ifname = optarg; + break; + case 'r': + tx_socket = false; + break; + case 's': + addr4_src = addr6_src = optarg; + break; + case 'S': + smac = optarg; + break; + case 't': + testname = optarg; + break; + case 'v': + verbose = true; + break; + default: + error(1, 0, "%s invalid option %c\n", __func__, c); + break; + } + } +} + +int main(int argc, char **argv) +{ + parse_args(argc, argv); + + if (ipip) { + tcp_offset = ETH_HLEN + sizeof(struct iphdr) * 2; + total_hdr_len = tcp_offset + sizeof(struct tcphdr); + } else if (proto == PF_INET) { + tcp_offset = ETH_HLEN + sizeof(struct iphdr); + total_hdr_len = tcp_offset + sizeof(struct tcphdr); + } else if (proto == PF_INET6) { + tcp_offset = ETH_HLEN + sizeof(struct ipv6hdr); + total_hdr_len = MAX_HDR_LEN; + } else { + error(1, 0, "Protocol family is not ipv4 or ipv6"); + } + + read_MAC(src_mac, smac); + read_MAC(dst_mac, dmac); + + if (tx_socket) { + gro_sender(); + } else { + /* Only the receiver exit status determines test success. */ + gro_receiver(); + fprintf(stderr, "Gro::%s test passed.\n", testname); + } + + return 0; +} diff --git a/tools/testing/selftests/drivers/net/gro.py b/tools/testing/selftests/drivers/net/gro.py new file mode 100755 index 000000000000..ba83713bf7b5 --- /dev/null +++ b/tools/testing/selftests/drivers/net/gro.py @@ -0,0 +1,164 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +""" +GRO (Generic Receive Offload) conformance tests. + +Validates that GRO coalescing works correctly by running the gro +binary in different configurations and checking for correct packet +coalescing behavior. + +Test cases: + - data: Data packets with same size/headers and correct seq numbers coalesce + - ack: Pure ACK packets do not coalesce + - flags: Packets with PSH, SYN, URG, RST flags do not coalesce + - tcp: Packets with incorrect checksum, non-consecutive seqno don't coalesce + - ip: Packets with different ECN, TTL, TOS, or IP options don't coalesce + - large: Packets larger than GRO_MAX_SIZE don't coalesce +""" + +import os +from lib.py import ksft_run, ksft_exit, ksft_pr +from lib.py import NetDrvEpEnv, KsftXfailEx +from lib.py import cmd, defer, bkg, ip +from lib.py import ksft_variants + + +def _resolve_dmac(cfg, ipver): + """ + Find the destination MAC address remote host should use to send packets + towards the local host. It may be a router / gateway address. + """ + + attr = "dmac" + ipver + # Cache the response across test cases + if hasattr(cfg, attr): + return getattr(cfg, attr) + + route = ip(f"-{ipver} route get {cfg.addr_v[ipver]}", + json=True, host=cfg.remote)[0] + gw = route.get("gateway") + # Local L2 segment, address directly + if not gw: + setattr(cfg, attr, cfg.dev['address']) + return getattr(cfg, attr) + + # ping to make sure neighbor is resolved, + # bind to an interface, for v6 the GW is likely link local + cmd(f"ping -c1 -W0 -I{cfg.remote_ifname} {gw}", host=cfg.remote) + + neigh = ip(f"neigh get {gw} dev {cfg.remote_ifname}", + json=True, host=cfg.remote)[0] + setattr(cfg, attr, neigh['lladdr']) + return getattr(cfg, attr) + + +def _write_defer_restore(cfg, path, val, defer_undo=False): + with open(path, "r", encoding="utf-8") as fp: + orig_val = fp.read().strip() + if str(val) == orig_val: + return + with open(path, "w", encoding="utf-8") as fp: + fp.write(val) + if defer_undo: + defer(_write_defer_restore, cfg, path, orig_val) + + +def _set_mtu_restore(dev, mtu, host): + if dev['mtu'] < mtu: + ip(f"link set dev {dev['ifname']} mtu {mtu}", host=host) + defer(ip, f"link set dev {dev['ifname']} mtu {dev['mtu']}", host=host) + + +def _setup(cfg, test_name): + """ Setup hardware loopback mode for GRO testing. """ + + if not hasattr(cfg, "bin_remote"): + cfg.bin_local = cfg.test_dir / "gro" + cfg.bin_remote = cfg.remote.deploy(cfg.bin_local) + + # "large" test needs at least 4k MTU + if test_name == "large": + _set_mtu_restore(cfg.dev, 4096, None) + _set_mtu_restore(cfg.remote_dev, 4096, cfg.remote) + + flush_path = f"/sys/class/net/{cfg.ifname}/gro_flush_timeout" + irq_path = f"/sys/class/net/{cfg.ifname}/napi_defer_hard_irqs" + + _write_defer_restore(cfg, flush_path, "200000", defer_undo=True) + _write_defer_restore(cfg, irq_path, "10", defer_undo=True) + + try: + # Disable TSO for local tests + cfg.require_nsim() # will raise KsftXfailEx if not running on nsim + + cmd(f"ethtool -K {cfg.ifname} gro on tso off") + cmd(f"ethtool -K {cfg.remote_ifname} gro on tso off", host=cfg.remote) + except KsftXfailEx: + pass + +def _gro_variants(): + """Generator that yields all combinations of protocol and test types.""" + + for protocol in ["ipv4", "ipv6", "ipip"]: + for test_name in ["data", "ack", "flags", "tcp", "ip", "large"]: + yield protocol, test_name + + +@ksft_variants(_gro_variants()) +def test(cfg, protocol, test_name): + """Run a single GRO test with retries.""" + + ipver = "6" if protocol[-1] == "6" else "4" + cfg.require_ipver(ipver) + + _setup(cfg, test_name) + + base_cmd_args = [ + f"--{protocol}", + f"--dmac {_resolve_dmac(cfg, ipver)}", + f"--smac {cfg.remote_dev['address']}", + f"--daddr {cfg.addr_v[ipver]}", + f"--saddr {cfg.remote_addr_v[ipver]}", + f"--test {test_name}", + "--verbose" + ] + base_args = " ".join(base_cmd_args) + + # Each test is run 6 times to deflake, because given the receive timing, + # not all packets that should coalesce will be considered in the same flow + # on every try. + max_retries = 6 + for attempt in range(max_retries): + rx_cmd = f"{cfg.bin_local} {base_args} --rx --iface {cfg.ifname}" + tx_cmd = f"{cfg.bin_remote} {base_args} --iface {cfg.remote_ifname}" + + fail_now = attempt >= max_retries - 1 + + with bkg(rx_cmd, ksft_ready=True, exit_wait=True, + fail=fail_now) as rx_proc: + cmd(tx_cmd, host=cfg.remote) + + if rx_proc.ret == 0: + return + + ksft_pr(rx_proc.stdout.strip().replace('\n', '\n# ')) + ksft_pr(rx_proc.stderr.strip().replace('\n', '\n# ')) + + if test_name == "large" and os.environ.get("KSFT_MACHINE_SLOW"): + ksft_pr(f"Ignoring {protocol}/{test_name} failure due to slow environment") + return + + ksft_pr(f"Attempt {attempt + 1}/{max_retries} failed, retrying...") + + +def main() -> None: + """ Ksft boiler plate main """ + + with NetDrvEpEnv(__file__) as cfg: + ksft_run(cases=[test], args=(cfg,)) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hds.py b/tools/testing/selftests/drivers/net/hds.py new file mode 100755 index 000000000000..c4fe049e9baa --- /dev/null +++ b/tools/testing/selftests/drivers/net/hds.py @@ -0,0 +1,329 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +import errno +import os +import random +from typing import Union +from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_raises, KsftSkipEx +from lib.py import CmdExitFailure, EthtoolFamily, NlError +from lib.py import NetDrvEnv +from lib.py import defer, ethtool, ip + + +def _get_hds_mode(cfg, netnl) -> str: + try: + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + except NlError as e: + raise KsftSkipEx('ring-get not supported by device') + if 'tcp-data-split' not in rings: + raise KsftSkipEx('tcp-data-split not supported by device') + return rings['tcp-data-split'] + + +def _xdp_onoff(cfg): + prog = cfg.net_lib_dir / "xdp_dummy.bpf.o" + ip("link set dev %s xdp obj %s sec xdp" % + (cfg.ifname, prog)) + ip("link set dev %s xdp off" % cfg.ifname) + + +def _ioctl_ringparam_modify(cfg, netnl) -> None: + """ + Helper for performing a hopefully unimportant IOCTL SET. + IOCTL does not support HDS, so it should not affect the HDS config. + """ + try: + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + except NlError as e: + raise KsftSkipEx('ring-get not supported by device') + + if 'tx' not in rings: + raise KsftSkipEx('setting Tx ring size not supported') + + try: + ethtool(f"--disable-netlink -G {cfg.ifname} tx {rings['tx'] // 2}") + except CmdExitFailure as e: + ethtool(f"--disable-netlink -G {cfg.ifname} tx {rings['tx'] * 2}") + defer(ethtool, f"-G {cfg.ifname} tx {rings['tx']}") + + +def get_hds(cfg, netnl) -> None: + _get_hds_mode(cfg, netnl) + + +def get_hds_thresh(cfg, netnl) -> None: + try: + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + except NlError as e: + raise KsftSkipEx('ring-get not supported by device') + if 'hds-thresh' not in rings: + raise KsftSkipEx('hds-thresh not supported by device') + + +def _hds_reset(cfg, netnl, rings) -> None: + cur = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + + arg = {'header': {'dev-index': cfg.ifindex}} + if cur.get('tcp-data-split') != rings.get('tcp-data-split'): + # Try to reset to "unknown" first, we don't know if the setting + # was the default or user chose it. Default seems more likely. + arg['tcp-data-split'] = "unknown" + netnl.rings_set(arg) + cur = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + if cur['tcp-data-split'] == rings['tcp-data-split']: + del arg['tcp-data-split'] + else: + # Try the explicit setting + arg['tcp-data-split'] = rings['tcp-data-split'] + if cur.get('hds-thresh') != rings.get('hds-thresh'): + arg['hds-thresh'] = rings['hds-thresh'] + if len(arg) > 1: + netnl.rings_set(arg) + + +def _defer_reset_hds(cfg, netnl) -> Union[dict, None]: + try: + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + if 'hds-thresh' in rings or 'tcp-data-split' in rings: + defer(_hds_reset, cfg, netnl, rings) + except NlError as e: + pass + + +def set_hds_enable(cfg, netnl) -> None: + _defer_reset_hds(cfg, netnl) + try: + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'tcp-data-split': 'enabled'}) + except NlError as e: + if e.error == errno.EINVAL: + raise KsftSkipEx("disabling of HDS not supported by the device") + elif e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("ring-set not supported by the device") + try: + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + except NlError as e: + raise KsftSkipEx('ring-get not supported by device') + if 'tcp-data-split' not in rings: + raise KsftSkipEx('tcp-data-split not supported by device') + + ksft_eq('enabled', rings['tcp-data-split']) + +def set_hds_disable(cfg, netnl) -> None: + _defer_reset_hds(cfg, netnl) + try: + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'tcp-data-split': 'disabled'}) + except NlError as e: + if e.error == errno.EINVAL: + raise KsftSkipEx("disabling of HDS not supported by the device") + elif e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("ring-set not supported by the device") + try: + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + except NlError as e: + raise KsftSkipEx('ring-get not supported by device') + if 'tcp-data-split' not in rings: + raise KsftSkipEx('tcp-data-split not supported by device') + + ksft_eq('disabled', rings['tcp-data-split']) + +def set_hds_thresh_zero(cfg, netnl) -> None: + _defer_reset_hds(cfg, netnl) + try: + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'hds-thresh': 0}) + except NlError as e: + if e.error == errno.EINVAL: + raise KsftSkipEx("hds-thresh-set not supported by the device") + elif e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("ring-set not supported by the device") + try: + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + except NlError as e: + raise KsftSkipEx('ring-get not supported by device') + if 'hds-thresh' not in rings: + raise KsftSkipEx('hds-thresh not supported by device') + + ksft_eq(0, rings['hds-thresh']) + +def set_hds_thresh_random(cfg, netnl) -> None: + _defer_reset_hds(cfg, netnl) + try: + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + except NlError as e: + raise KsftSkipEx('ring-get not supported by device') + if 'hds-thresh' not in rings: + raise KsftSkipEx('hds-thresh not supported by device') + if 'hds-thresh-max' not in rings: + raise KsftSkipEx('hds-thresh-max not defined by device') + + if rings['hds-thresh-max'] < 2: + raise KsftSkipEx('hds-thresh-max is too small') + elif rings['hds-thresh-max'] == 2: + hds_thresh = 1 + else: + while True: + hds_thresh = random.randint(1, rings['hds-thresh-max'] - 1) + if hds_thresh != rings['hds-thresh']: + break + + try: + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'hds-thresh': hds_thresh}) + except NlError as e: + if e.error == errno.EINVAL: + raise KsftSkipEx("hds-thresh-set not supported by the device") + elif e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("ring-set not supported by the device") + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + ksft_eq(hds_thresh, rings['hds-thresh']) + +def set_hds_thresh_max(cfg, netnl) -> None: + _defer_reset_hds(cfg, netnl) + try: + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + except NlError as e: + raise KsftSkipEx('ring-get not supported by device') + if 'hds-thresh' not in rings: + raise KsftSkipEx('hds-thresh not supported by device') + try: + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'hds-thresh': rings['hds-thresh-max']}) + except NlError as e: + if e.error == errno.EINVAL: + raise KsftSkipEx("hds-thresh-set not supported by the device") + elif e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("ring-set not supported by the device") + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + ksft_eq(rings['hds-thresh'], rings['hds-thresh-max']) + +def set_hds_thresh_gt(cfg, netnl) -> None: + _defer_reset_hds(cfg, netnl) + try: + rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + except NlError as e: + raise KsftSkipEx('ring-get not supported by device') + if 'hds-thresh' not in rings: + raise KsftSkipEx('hds-thresh not supported by device') + if 'hds-thresh-max' not in rings: + raise KsftSkipEx('hds-thresh-max not defined by device') + hds_gt = rings['hds-thresh-max'] + 1 + with ksft_raises(NlError) as e: + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'hds-thresh': hds_gt}) + ksft_eq(e.exception.nl_msg.error, -errno.EINVAL) + + +def set_xdp(cfg, netnl) -> None: + """ + Enable single-buffer XDP on the device. + When HDS is in "auto" / UNKNOWN mode, XDP installation should work. + """ + mode = _get_hds_mode(cfg, netnl) + if mode == 'enabled': + _defer_reset_hds(cfg, netnl) + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, + 'tcp-data-split': 'unknown'}) + + _xdp_onoff(cfg) + + +def enabled_set_xdp(cfg, netnl) -> None: + """ + Enable single-buffer XDP on the device. + When HDS is in "enabled" mode, XDP installation should not work. + """ + _get_hds_mode(cfg, netnl) + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, + 'tcp-data-split': 'enabled'}) + + defer(netnl.rings_set, {'header': {'dev-index': cfg.ifindex}, + 'tcp-data-split': 'unknown'}) + + with ksft_raises(CmdExitFailure) as e: + _xdp_onoff(cfg) + + +def set_xdp(cfg, netnl) -> None: + """ + Enable single-buffer XDP on the device. + When HDS is in "auto" / UNKNOWN mode, XDP installation should work. + """ + mode = _get_hds_mode(cfg, netnl) + if mode == 'enabled': + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, + 'tcp-data-split': 'unknown'}) + + _xdp_onoff(cfg) + + +def enabled_set_xdp(cfg, netnl) -> None: + """ + Enable single-buffer XDP on the device. + When HDS is in "enabled" mode, XDP installation should not work. + """ + _get_hds_mode(cfg, netnl) # Trigger skip if not supported + + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, + 'tcp-data-split': 'enabled'}) + defer(netnl.rings_set, {'header': {'dev-index': cfg.ifindex}, + 'tcp-data-split': 'unknown'}) + + with ksft_raises(CmdExitFailure) as e: + _xdp_onoff(cfg) + + +def ioctl(cfg, netnl) -> None: + mode1 = _get_hds_mode(cfg, netnl) + _ioctl_ringparam_modify(cfg, netnl) + mode2 = _get_hds_mode(cfg, netnl) + + ksft_eq(mode1, mode2) + + +def ioctl_set_xdp(cfg, netnl) -> None: + """ + Like set_xdp(), but we perturb the settings via the legacy ioctl. + """ + mode = _get_hds_mode(cfg, netnl) + if mode == 'enabled': + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, + 'tcp-data-split': 'unknown'}) + + _ioctl_ringparam_modify(cfg, netnl) + + _xdp_onoff(cfg) + + +def ioctl_enabled_set_xdp(cfg, netnl) -> None: + """ + Enable single-buffer XDP on the device. + When HDS is in "enabled" mode, XDP installation should not work. + """ + _get_hds_mode(cfg, netnl) # Trigger skip if not supported + + netnl.rings_set({'header': {'dev-index': cfg.ifindex}, + 'tcp-data-split': 'enabled'}) + defer(netnl.rings_set, {'header': {'dev-index': cfg.ifindex}, + 'tcp-data-split': 'unknown'}) + + with ksft_raises(CmdExitFailure) as e: + _xdp_onoff(cfg) + + +def main() -> None: + with NetDrvEnv(__file__, queue_count=3) as cfg: + ksft_run([get_hds, + get_hds_thresh, + set_hds_disable, + set_hds_enable, + set_hds_thresh_random, + set_hds_thresh_zero, + set_hds_thresh_max, + set_hds_thresh_gt, + set_xdp, + enabled_set_xdp, + ioctl, + ioctl_set_xdp, + ioctl_enabled_set_xdp], + args=(cfg, EthtoolFamily())) + ksft_exit() + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hw/.gitignore b/tools/testing/selftests/drivers/net/hw/.gitignore new file mode 100644 index 000000000000..46540468a775 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/.gitignore @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only +iou-zcrx +ncdevmem +toeplitz diff --git a/tools/testing/selftests/drivers/net/hw/Makefile b/tools/testing/selftests/drivers/net/hw/Makefile index c9f2f48fc30f..9c163ba6feee 100644 --- a/tools/testing/selftests/drivers/net/hw/Makefile +++ b/tools/testing/selftests/drivers/net/hw/Makefile @@ -1,17 +1,45 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT +# Check if io_uring supports zero-copy receive +HAS_IOURING_ZCRX := $(shell \ + echo -e '#include <liburing.h>\n' \ + 'void *func = (void *)io_uring_register_ifq;\n' \ + 'int main() {return 0;}' | \ + $(CC) -luring -x c - -o /dev/null 2>&1 && echo y) + +ifeq ($(HAS_IOURING_ZCRX),y) +COND_GEN_FILES += iou-zcrx +else +$(warning excluding iouring tests, liburing not installed or too old) +endif + +TEST_GEN_FILES := \ + $(COND_GEN_FILES) \ +# end of TEST_GEN_FILES + TEST_PROGS = \ csum.py \ devlink_port_split.py \ + devlink_rate_tc_bw.py \ + devmem.py \ ethtool.sh \ ethtool_extended_state.sh \ ethtool_mm.sh \ ethtool_rmon.sh \ hw_stats_l3.sh \ hw_stats_l3_gre.sh \ + iou-zcrx.py \ + irq.py \ loopback.sh \ + nic_timestamp.py \ pp_alloc_fail.py \ + rss_api.py \ rss_ctx.py \ + rss_flow_label.py \ + rss_input_xfrm.py \ + toeplitz.py \ + tso.py \ + xsk_reconfig.py \ # TEST_FILES := \ @@ -21,9 +49,31 @@ TEST_FILES := \ TEST_INCLUDES := \ $(wildcard lib/py/*.py ../lib/py/*.py) \ ../../../net/lib.sh \ - ../../../net/forwarding/lib.sh \ ../../../net/forwarding/ipip_lib.sh \ + ../../../net/forwarding/lib.sh \ ../../../net/forwarding/tc_common.sh \ # +# YNL files, must be before "include ..lib.mk" +YNL_GEN_FILES := \ + ncdevmem \ + toeplitz \ +# end of YNL_GEN_FILES +TEST_GEN_FILES += $(YNL_GEN_FILES) +TEST_GEN_FILES += $(patsubst %.c,%.o,$(wildcard *.bpf.c)) + include ../../../lib.mk + +# YNL build +YNL_GENS := \ + ethtool \ + netdev \ +# end of YNL_GENS + +include ../../../net/ynl.mk + +include ../../../net/bpf.mk + +ifeq ($(HAS_IOURING_ZCRX),y) +$(OUTPUT)/iou-zcrx: LDLIBS += -luring +endif diff --git a/tools/testing/selftests/drivers/net/hw/config b/tools/testing/selftests/drivers/net/hw/config new file mode 100644 index 000000000000..2307aa001be1 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/config @@ -0,0 +1,11 @@ +CONFIG_FAIL_FUNCTION=y +CONFIG_FAULT_INJECTION=y +CONFIG_FAULT_INJECTION_DEBUG_FS=y +CONFIG_FUNCTION_ERROR_INJECTION=y +CONFIG_IO_URING=y +CONFIG_IPV6=y +CONFIG_IPV6_GRE=y +CONFIG_NET_IPGRE=y +CONFIG_NET_IPGRE_DEMUX=y +CONFIG_UDMABUF=y +CONFIG_VXLAN=y diff --git a/tools/testing/selftests/drivers/net/hw/csum.py b/tools/testing/selftests/drivers/net/hw/csum.py index cb40497faee4..3e3a89a34afe 100755 --- a/tools/testing/selftests/drivers/net/hw/csum.py +++ b/tools/testing/selftests/drivers/net/hw/csum.py @@ -9,41 +9,35 @@ from lib.py import ksft_run, ksft_exit, KsftSkipEx from lib.py import EthtoolFamily, NetDrvEpEnv from lib.py import bkg, cmd, wait_port_listen -def test_receive(cfg, ipv4=False, extra_args=None): +def test_receive(cfg, ipver="6", extra_args=None): """Test local nic checksum receive. Remote host sends crafted packets.""" if not cfg.have_rx_csum: raise KsftSkipEx(f"Test requires rx checksum offload on {cfg.ifname}") - if ipv4: - ip_args = f"-4 -S {cfg.remote_v4} -D {cfg.v4}" - else: - ip_args = f"-6 -S {cfg.remote_v6} -D {cfg.v6}" + ip_args = f"-{ipver} -S {cfg.remote_addr_v[ipver]} -D {cfg.addr_v[ipver]}" rx_cmd = f"{cfg.bin_local} -i {cfg.ifname} -n 100 {ip_args} -r 1 -R {extra_args}" - tx_cmd = f"{cfg.bin_remote} -i {cfg.ifname} -n 100 {ip_args} -r 1 -T {extra_args}" + tx_cmd = f"{cfg.bin_remote} -i {cfg.remote_ifname} -n 100 {ip_args} -r 1 -T {extra_args}" with bkg(rx_cmd, exit_wait=True): wait_port_listen(34000, proto="udp") cmd(tx_cmd, host=cfg.remote) -def test_transmit(cfg, ipv4=False, extra_args=None): +def test_transmit(cfg, ipver="6", extra_args=None): """Test local nic checksum transmit. Remote host verifies packets.""" if (not cfg.have_tx_csum_generic and - not (cfg.have_tx_csum_ipv4 and ipv4) and - not (cfg.have_tx_csum_ipv6 and not ipv4)): + not (cfg.have_tx_csum_ipv4 and ipver == "4") and + not (cfg.have_tx_csum_ipv6 and ipver == "6")): raise KsftSkipEx(f"Test requires tx checksum offload on {cfg.ifname}") - if ipv4: - ip_args = f"-4 -S {cfg.v4} -D {cfg.remote_v4}" - else: - ip_args = f"-6 -S {cfg.v6} -D {cfg.remote_v6}" + ip_args = f"-{ipver} -S {cfg.addr_v[ipver]} -D {cfg.remote_addr_v[ipver]}" # Cannot randomize input when calculating zero checksum if extra_args != "-U -Z": extra_args += " -r 1" - rx_cmd = f"{cfg.bin_remote} -i {cfg.ifname} -L 1 -n 100 {ip_args} -R {extra_args}" + rx_cmd = f"{cfg.bin_remote} -i {cfg.remote_ifname} -L 1 -n 100 {ip_args} -R {extra_args}" tx_cmd = f"{cfg.bin_local} -i {cfg.ifname} -L 1 -n 100 {ip_args} -T {extra_args}" with bkg(rx_cmd, host=cfg.remote, exit_wait=True): @@ -51,26 +45,20 @@ def test_transmit(cfg, ipv4=False, extra_args=None): cmd(tx_cmd) -def test_builder(name, cfg, ipv4=False, tx=False, extra_args=""): +def test_builder(name, cfg, ipver="6", tx=False, extra_args=""): """Construct specific tests from the common template. Most tests follow the same basic pattern, differing only in Direction of the test and optional flags passed to csum.""" def f(cfg): - if ipv4: - cfg.require_v4() - else: - cfg.require_v6() + cfg.require_ipver(ipver) if tx: - test_transmit(cfg, ipv4, extra_args) + test_transmit(cfg, ipver, extra_args) else: - test_receive(cfg, ipv4, extra_args) + test_receive(cfg, ipver, extra_args) - if ipv4: - f.__name__ = "ipv4_" + name - else: - f.__name__ = "ipv6_" + name + f.__name__ = f"ipv{ipver}_" + name return f @@ -100,19 +88,19 @@ def main() -> None: with NetDrvEpEnv(__file__, nsim_test=False) as cfg: check_nic_features(cfg) - cfg.bin_local = path.abspath(path.dirname(__file__) + "/../../../net/lib/csum") + cfg.bin_local = cfg.net_lib_dir / "csum" cfg.bin_remote = cfg.remote.deploy(cfg.bin_local) cases = [] - for ipv4 in [True, False]: - cases.append(test_builder("rx_tcp", cfg, ipv4, False, "-t")) - cases.append(test_builder("rx_tcp_invalid", cfg, ipv4, False, "-t -E")) + for ipver in ["4", "6"]: + cases.append(test_builder("rx_tcp", cfg, ipver, False, "-t")) + cases.append(test_builder("rx_tcp_invalid", cfg, ipver, False, "-t -E")) - cases.append(test_builder("rx_udp", cfg, ipv4, False, "")) - cases.append(test_builder("rx_udp_invalid", cfg, ipv4, False, "-E")) + cases.append(test_builder("rx_udp", cfg, ipver, False, "")) + cases.append(test_builder("rx_udp_invalid", cfg, ipver, False, "-E")) - cases.append(test_builder("tx_udp_csum_offload", cfg, ipv4, True, "-U")) - cases.append(test_builder("tx_udp_zero_checksum", cfg, ipv4, True, "-U -Z")) + cases.append(test_builder("tx_udp_csum_offload", cfg, ipver, True, "-U")) + cases.append(test_builder("tx_udp_zero_checksum", cfg, ipver, True, "-U -Z")) ksft_run(cases=cases, args=(cfg, )) ksft_exit() diff --git a/tools/testing/selftests/drivers/net/hw/devlink_rate_tc_bw.py b/tools/testing/selftests/drivers/net/hw/devlink_rate_tc_bw.py new file mode 100755 index 000000000000..4e4faa9275bb --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/devlink_rate_tc_bw.py @@ -0,0 +1,439 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +""" +Devlink Rate TC Bandwidth Test Suite +=================================== + +This test suite verifies the functionality of devlink-rate traffic class (TC) +bandwidth distribution in a virtualized environment. The tests validate that +bandwidth can be properly allocated between different traffic classes and +that TC mapping works as expected. + +Test Environment: +---------------- +- Creates 1 VF +- Establishes a bridge connecting the VF representor and the uplink representor +- Sets up 2 VLAN interfaces on the VF with different VLAN IDs (101, 102) +- Configures different traffic classes (TC3 and TC4) for each VLAN + +Test Cases: +---------- +1. test_no_tc_mapping_bandwidth: + - Verifies that without TC mapping, bandwidth is NOT distributed according to + the configured 20/80 split between TC3 and TC4 + - This test should fail if bandwidth matches the 20/80 split without TC + mapping + - Expected: Bandwidth should NOT be distributed as 20/80 + +2. test_tc_mapping_bandwidth: + - Configures TC mapping using mqprio qdisc + - Verifies that with TC mapping, bandwidth IS distributed according to the + configured 20/80 split between TC3 and TC4 + - Expected: Bandwidth should be distributed as 20/80 + +Bandwidth Distribution: +---------------------- +- TC3 (VLAN 101): Configured for 20% of total bandwidth +- TC4 (VLAN 102): Configured for 80% of total bandwidth +- Total bandwidth: 1Gbps +- Tolerance: +-12% + +Hardware-Specific Behavior (mlx5): +-------------------------- +mlx5 hardware enforces traffic class separation by ensuring that each transmit +queue (SQ) is associated with a single TC. If a packet is sent on a queue that +doesn't match the expected TC (based on DSCP or VLAN priority and hypervisor-set +mapping), the hardware moves the queue to the correct TC scheduler to preserve +traffic isolation. + +This behavior means that even without explicit TC-to-queue mapping, bandwidth +enforcement may still appear to work—because the hardware dynamically adjusts +the scheduling context. However, this can lead to performance issues in high +rates and HOL blocking if traffic from different TCs is mixed on the same queue. +""" + +import json +import os +import subprocess +import threading +import time + +from lib.py import ksft_pr, ksft_run, ksft_exit +from lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx +from lib.py import NetDrvEpEnv, DevlinkFamily +from lib.py import NlError +from lib.py import cmd, defer, ethtool, ip +from lib.py import Iperf3Runner + + +class BandwidthValidator: + """ + Validates total bandwidth and individual shares with tolerance + relative to the overall total. + """ + + def __init__(self, shares): + self.tolerance_percent = 12 + self.expected_total = sum(shares.values()) + self.bounds = {} + + for name, exp in shares.items(): + self.bounds[name] = (self.min_expected(exp), self.max_expected(exp)) + + def min_expected(self, value): + """Calculates the minimum acceptable value based on tolerance.""" + return value - (self.expected_total * self.tolerance_percent / 100) + + def max_expected(self, value): + """Calculates the maximum acceptable value based on tolerance.""" + return value + (self.expected_total * self.tolerance_percent / 100) + + def bound(self, values): + """ + Return True if all given values fall within tolerance. + """ + for name, value in values.items(): + low, high = self.bounds[name] + if not low <= value <= high: + return False + return True + + +def setup_vf(cfg, set_tc_mapping=True): + """ + Sets up a VF on the given network interface. + + Enables SR-IOV and switchdev mode, brings the VF interface up, + and optionally configures TC mapping using mqprio. + """ + try: + cmd(f"devlink dev eswitch set pci/{cfg.pci} mode switchdev") + defer(cmd, f"devlink dev eswitch set pci/{cfg.pci} mode legacy") + except Exception as exc: + raise KsftSkipEx(f"Failed to enable switchdev mode on {cfg.pci}") from exc + try: + cmd(f"echo 1 > /sys/class/net/{cfg.ifname}/device/sriov_numvfs", shell=True) + defer(cmd, f"echo 0 > /sys/class/net/{cfg.ifname}/device/sriov_numvfs", shell=True) + except Exception as exc: + raise KsftSkipEx(f"Failed to enable SR-IOV on {cfg.ifname}") from exc + + time.sleep(2) + vf_ifc = (os.listdir( + f"/sys/class/net/{cfg.ifname}/device/virtfn0/net") or [None])[0] + if vf_ifc: + ip(f"link set dev {vf_ifc} up") + else: + raise KsftSkipEx("VF interface not found") + if set_tc_mapping: + cmd(f"tc qdisc add dev {vf_ifc} root handle 5 mqprio mode dcb hw 1 num_tc 8") + + return vf_ifc + + +def setup_vlans_on_vf(vf_ifc): + """ + Sets up two VLAN interfaces on the given VF, each mapped to a different TC. + """ + vlan_configs = [ + {"vlan_id": 101, "tc": 3, "ip": "198.51.100.1"}, + {"vlan_id": 102, "tc": 4, "ip": "198.51.100.9"}, + ] + + for config in vlan_configs: + vlan_dev = f"{vf_ifc}.{config['vlan_id']}" + ip(f"link add link {vf_ifc} name {vlan_dev} type vlan id {config['vlan_id']}") + ip(f"addr add {config['ip']}/29 dev {vlan_dev}") + ip(f"link set dev {vlan_dev} up") + ip(f"link set dev {vlan_dev} type vlan egress-qos-map 0:{config['tc']}") + ksft_pr(f"Created VLAN {vlan_dev} on {vf_ifc} with tc {config['tc']} and IP {config['ip']}") + + +def get_vf_info(cfg): + """ + Finds the VF representor interface and devlink port index + for the given PCI device used in the test environment. + """ + cfg.vf_representor = None + cfg.vf_port_index = None + out = subprocess.check_output(["devlink", "-j", "port", "show"], encoding="utf-8") + ports = json.loads(out)["port"] + + for port_name, props in ports.items(): + netdev = props.get("netdev") + + if (port_name.startswith(f"pci/{cfg.pci}/") and + props.get("vfnum") == 0): + cfg.vf_representor = netdev + cfg.vf_port_index = int(port_name.split("/")[-1]) + break + + +def setup_bridge(cfg): + """ + Creates and configures a Linux bridge, with both the uplink + and VF representor interfaces attached to it. + """ + bridge_name = f"br_{os.getpid()}" + ip(f"link add name {bridge_name} type bridge") + defer(cmd, f"ip link del name {bridge_name} type bridge") + + ip(f"link set dev {cfg.ifname} master {bridge_name}") + + rep_name = cfg.vf_representor + if rep_name: + ip(f"link set dev {rep_name} master {bridge_name}") + ip(f"link set dev {rep_name} up") + ksft_pr(f"Set representor {rep_name} up and added to bridge") + else: + raise KsftSkipEx("Could not find representor for the VF") + + ip(f"link set dev {bridge_name} up") + + +def setup_devlink_rate(cfg): + """ + Configures devlink rate tx_max and traffic class bandwidth for the VF. + """ + port_index = cfg.vf_port_index + if port_index is None: + raise KsftSkipEx("Could not find VF port index") + try: + cfg.devnl.rate_set({ + "bus-name": "pci", + "dev-name": cfg.pci, + "port-index": port_index, + "rate-tx-max": 125000000, + "rate-tc-bws": [ + {"index": 0, "bw": 0}, + {"index": 1, "bw": 0}, + {"index": 2, "bw": 0}, + {"index": 3, "bw": 20}, + {"index": 4, "bw": 80}, + {"index": 5, "bw": 0}, + {"index": 6, "bw": 0}, + {"index": 7, "bw": 0}, + ] + }) + except NlError as exc: + if exc.error == 95: # EOPNOTSUPP + raise KsftSkipEx("devlink rate configuration is not supported on the VF") from exc + raise KsftFailEx(f"rate_set failed on VF port {port_index}") from exc + + +def setup_remote_vlans(cfg): + """ + Sets up VLAN interfaces on the remote side. + """ + remote_dev = cfg.remote_ifname + vlan_ids = [101, 102] + remote_ips = ["198.51.100.2", "198.51.100.10"] + + for vlan_id, ip_addr in zip(vlan_ids, remote_ips): + vlan_dev = f"{remote_dev}.{vlan_id}" + cmd(f"ip link add link {remote_dev} name {vlan_dev} " + f"type vlan id {vlan_id}", host=cfg.remote) + cmd(f"ip addr add {ip_addr}/29 dev {vlan_dev}", host=cfg.remote) + cmd(f"ip link set dev {vlan_dev} up", host=cfg.remote) + defer(cmd, f"ip link del {vlan_dev}", host=cfg.remote) + + +def setup_test_environment(cfg, set_tc_mapping=True): + """ + Sets up the complete test environment including VF creation, VLANs, + bridge configuration and devlink rate setup. + """ + vf_ifc = setup_vf(cfg, set_tc_mapping) + ksft_pr(f"Created VF interface: {vf_ifc}") + + setup_vlans_on_vf(vf_ifc) + + get_vf_info(cfg) + setup_bridge(cfg) + + setup_devlink_rate(cfg) + setup_remote_vlans(cfg) + + +def measure_bandwidth(cfg, server_ip, client_ip, barrier): + """ + Synchronizes with peers and runs an iperf3-based bandwidth measurement + between the given endpoints. Returns average Gbps. + """ + runner = Iperf3Runner(cfg, server_ip=server_ip, client_ip=client_ip) + try: + barrier.wait(timeout=10) + except Exception as exc: + raise KsftFailEx("iperf3 barrier wait timed") from exc + + try: + bw_gbps = runner.measure_bandwidth(reverse=True) + except Exception as exc: + raise KsftFailEx("iperf3 bandwidth measurement failed") from exc + + return bw_gbps + + +def run_bandwidth_test(cfg): + """ + Runs parallel bandwidth measurements for each VLAN/TC pair and collects results. + """ + def _run_measure_bandwidth_thread(local_ip, remote_ip, results, barrier, tc_ix): + results[tc_ix] = measure_bandwidth(cfg, local_ip, remote_ip, barrier) + + vf_vlan_data = [ + # (local_ip, remote_ip, TC) + ("198.51.100.1", "198.51.100.2", 3), + ("198.51.100.9", "198.51.100.10", 4), + ] + + results = {} + threads = [] + start_barrier = threading.Barrier(len(vf_vlan_data)) + + for local_ip, remote_ip, tc_ix in vf_vlan_data: + thread = threading.Thread( + target=_run_measure_bandwidth_thread, + args=(local_ip, remote_ip, results, start_barrier, tc_ix) + ) + thread.start() + threads.append(thread) + + for thread in threads: + thread.join() + + for tc_ix, tc_bw in results.items(): + if tc_bw is None: + raise KsftFailEx("iperf3 failed; cannot evaluate bandwidth") + + return results + + +def calculate_bandwidth_percentages(results): + """ + Calculates the percentage of total bandwidth received by TC3 and TC4. + """ + if 3 not in results or 4 not in results: + raise KsftFailEx(f"Missing expected TC results in {results}") + + tc3_bw = results[3] + tc4_bw = results[4] + total_bw = tc3_bw + tc4_bw + tc3_percentage = (tc3_bw / total_bw) * 100 + tc4_percentage = (tc4_bw / total_bw) * 100 + + return { + 'tc3_bw': tc3_bw, + 'tc4_bw': tc4_bw, + 'tc3_percentage': tc3_percentage, + 'tc4_percentage': tc4_percentage, + 'total_bw': total_bw + } + + +def print_bandwidth_results(bw_data, test_name): + """ + Prints bandwidth measurements and TC usage summary for a given test. + """ + ksft_pr(f"Bandwidth check results {test_name}:") + ksft_pr(f"TC 3: {bw_data['tc3_bw']:.2f} Gbits/sec") + ksft_pr(f"TC 4: {bw_data['tc4_bw']:.2f} Gbits/sec") + ksft_pr(f"Total bandwidth: {bw_data['total_bw']:.2f} Gbits/sec") + ksft_pr(f"TC 3 percentage: {bw_data['tc3_percentage']:.1f}%") + ksft_pr(f"TC 4 percentage: {bw_data['tc4_percentage']:.1f}%") + + +def verify_total_bandwidth(bw_data, validator): + """ + Ensures the total measured bandwidth falls within the acceptable tolerance. + """ + total = bw_data['total_bw'] + + if validator.bound({"total": total}): + return + + low, high = validator.bounds["total"] + + if total < low: + raise KsftSkipEx( + f"Total bandwidth {total:.2f} Gbps < minimum " + f"{low:.2f} Gbps; " + f"parent tx_max ({validator.expected_total:.1f} G) " + f"not reached, cannot validate share" + ) + + raise KsftFailEx( + f"Total bandwidth {total:.2f} Gbps exceeds allowed ceiling " + f"{high:.2f} Gbps " + f"(VF tx_max set to {validator.expected_total:.1f} G)" + ) + + +def run_bandwidth_distribution_test(cfg, set_tc_mapping): + """ + Runs parallel bandwidth measurements for both TCs and collects results. + """ + setup_test_environment(cfg, set_tc_mapping) + bandwidths = run_bandwidth_test(cfg) + bw_data = calculate_bandwidth_percentages(bandwidths) + test_name = "with TC mapping" if set_tc_mapping else "without TC mapping" + print_bandwidth_results(bw_data, test_name) + + verify_total_bandwidth(bw_data, cfg.traffic_bw_validator) + + return cfg.tc_bw_validator.bound({"tc3": bw_data['tc3_percentage'], + "tc4": bw_data['tc4_percentage']}) + + +def test_no_tc_mapping_bandwidth(cfg): + """ + Verifies that bandwidth is not split 20/80 without traffic class mapping. + """ + pass_bw_msg = "Bandwidth is NOT distributed as 20/80 without TC mapping" + fail_bw_msg = "Bandwidth matched 20/80 split without TC mapping" + is_mlx5 = "driver: mlx5" in ethtool(f"-i {cfg.ifname}").stdout + + if run_bandwidth_distribution_test(cfg, set_tc_mapping=False): + if is_mlx5: + raise KsftXfailEx(fail_bw_msg) + raise KsftFailEx(fail_bw_msg) + if is_mlx5: + raise KsftFailEx("mlx5 behavior changed:" + pass_bw_msg) + ksft_pr(pass_bw_msg) + + +def test_tc_mapping_bandwidth(cfg): + """ + Verifies that bandwidth is correctly split 20/80 between TC3 and TC4 + when traffic class mapping is set. + """ + if run_bandwidth_distribution_test(cfg, set_tc_mapping=True): + ksft_pr("Bandwidth is distributed as 20/80 with TC mapping") + else: + raise KsftFailEx("Bandwidth did not match 20/80 split with TC mapping") + + +def main() -> None: + """ + Main entry point for running the test cases. + """ + with NetDrvEpEnv(__file__, nsim_test=False) as cfg: + cfg.devnl = DevlinkFamily() + + cfg.pci = os.path.basename( + os.path.realpath(f"/sys/class/net/{cfg.ifname}/device") + ) + if not cfg.pci: + raise KsftSkipEx("Could not get PCI address of the interface") + + cfg.traffic_bw_validator = BandwidthValidator({"total": 1}) + cfg.tc_bw_validator = BandwidthValidator({"tc3": 20, "tc4": 80}) + + cases = [test_no_tc_mapping_bandwidth, test_tc_mapping_bandwidth] + + ksft_run(cases=cases, args=(cfg,)) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hw/devmem.py b/tools/testing/selftests/drivers/net/hw/devmem.py new file mode 100755 index 000000000000..45c2d49d55b6 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/devmem.py @@ -0,0 +1,77 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +from os import path +from lib.py import ksft_run, ksft_exit +from lib.py import ksft_eq, KsftSkipEx +from lib.py import NetDrvEpEnv +from lib.py import bkg, cmd, rand_port, wait_port_listen +from lib.py import ksft_disruptive + + +def require_devmem(cfg): + if not hasattr(cfg, "_devmem_probed"): + probe_command = f"{cfg.bin_local} -f {cfg.ifname}" + cfg._devmem_supported = cmd(probe_command, fail=False, shell=True).ret == 0 + cfg._devmem_probed = True + + if not cfg._devmem_supported: + raise KsftSkipEx("Test requires devmem support") + + +@ksft_disruptive +def check_rx(cfg) -> None: + require_devmem(cfg) + + port = rand_port() + socat = f"socat -u - TCP{cfg.addr_ipver}:{cfg.baddr}:{port},bind={cfg.remote_baddr}:{port}" + listen_cmd = f"{cfg.bin_local} -l -f {cfg.ifname} -s {cfg.addr} -p {port} -c {cfg.remote_addr} -v 7" + + with bkg(listen_cmd, exit_wait=True) as ncdevmem: + wait_port_listen(port) + cmd(f"yes $(echo -e \x01\x02\x03\x04\x05\x06) | \ + head -c 1K | {socat}", host=cfg.remote, shell=True) + + ksft_eq(ncdevmem.ret, 0) + + +@ksft_disruptive +def check_tx(cfg) -> None: + require_devmem(cfg) + + port = rand_port() + listen_cmd = f"socat -U - TCP{cfg.addr_ipver}-LISTEN:{port}" + + with bkg(listen_cmd, host=cfg.remote, exit_wait=True) as socat: + wait_port_listen(port, host=cfg.remote) + cmd(f"echo -e \"hello\\nworld\"| {cfg.bin_local} -f {cfg.ifname} -s {cfg.remote_addr} -p {port}", shell=True) + + ksft_eq(socat.stdout.strip(), "hello\nworld") + + +@ksft_disruptive +def check_tx_chunks(cfg) -> None: + require_devmem(cfg) + + port = rand_port() + listen_cmd = f"socat -U - TCP{cfg.addr_ipver}-LISTEN:{port}" + + with bkg(listen_cmd, host=cfg.remote, exit_wait=True) as socat: + wait_port_listen(port, host=cfg.remote) + cmd(f"echo -e \"hello\\nworld\"| {cfg.bin_local} -f {cfg.ifname} -s {cfg.remote_addr} -p {port} -z 3", shell=True) + + ksft_eq(socat.stdout.strip(), "hello\nworld") + + +def main() -> None: + with NetDrvEpEnv(__file__) as cfg: + cfg.bin_local = path.abspath(path.dirname(__file__) + "/ncdevmem") + cfg.bin_remote = cfg.remote.deploy(cfg.bin_local) + + ksft_run([check_rx, check_tx, check_tx_chunks], + args=(cfg, )) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hw/iou-zcrx.c b/tools/testing/selftests/drivers/net/hw/iou-zcrx.c new file mode 100644 index 000000000000..62456df947bc --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/iou-zcrx.c @@ -0,0 +1,464 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <assert.h> +#include <errno.h> +#include <error.h> +#include <fcntl.h> +#include <limits.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <arpa/inet.h> +#include <linux/errqueue.h> +#include <linux/if_packet.h> +#include <linux/ipv6.h> +#include <linux/socket.h> +#include <linux/sockios.h> +#include <net/ethernet.h> +#include <net/if.h> +#include <netinet/in.h> +#include <netinet/ip.h> +#include <netinet/ip6.h> +#include <netinet/tcp.h> +#include <netinet/udp.h> +#include <sys/epoll.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/resource.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/types.h> +#include <sys/un.h> +#include <sys/wait.h> + +#include <liburing.h> + +static long page_size; +#define AREA_SIZE (8192 * page_size) +#define SEND_SIZE (512 * 4096) +#define min(a, b) \ + ({ \ + typeof(a) _a = (a); \ + typeof(b) _b = (b); \ + _a < _b ? _a : _b; \ + }) +#define min_t(t, a, b) \ + ({ \ + t _ta = (a); \ + t _tb = (b); \ + min(_ta, _tb); \ + }) + +#define ALIGN_UP(v, align) (((v) + (align) - 1) & ~((align) - 1)) + +static int cfg_server; +static int cfg_client; +static int cfg_port = 8000; +static int cfg_payload_len; +static const char *cfg_ifname; +static int cfg_queue_id = -1; +static bool cfg_oneshot; +static int cfg_oneshot_recvs; +static int cfg_send_size = SEND_SIZE; +static struct sockaddr_in6 cfg_addr; + +static char *payload; +static void *area_ptr; +static void *ring_ptr; +static size_t ring_size; +static struct io_uring_zcrx_rq rq_ring; +static unsigned long area_token; +static int connfd; +static bool stop; +static size_t received; + +static unsigned long gettimeofday_ms(void) +{ + struct timeval tv; + + gettimeofday(&tv, NULL); + return (tv.tv_sec * 1000) + (tv.tv_usec / 1000); +} + +static int parse_address(const char *str, int port, struct sockaddr_in6 *sin6) +{ + int ret; + + sin6->sin6_family = AF_INET6; + sin6->sin6_port = htons(port); + + ret = inet_pton(sin6->sin6_family, str, &sin6->sin6_addr); + if (ret != 1) { + /* fallback to plain IPv4 */ + ret = inet_pton(AF_INET, str, &sin6->sin6_addr.s6_addr32[3]); + if (ret != 1) + return -1; + + /* add ::ffff prefix */ + sin6->sin6_addr.s6_addr32[0] = 0; + sin6->sin6_addr.s6_addr32[1] = 0; + sin6->sin6_addr.s6_addr16[4] = 0; + sin6->sin6_addr.s6_addr16[5] = 0xffff; + } + + return 0; +} + +static inline size_t get_refill_ring_size(unsigned int rq_entries) +{ + size_t size; + + ring_size = rq_entries * sizeof(struct io_uring_zcrx_rqe); + /* add space for the header (head/tail/etc.) */ + ring_size += page_size; + return ALIGN_UP(ring_size, page_size); +} + +static void setup_zcrx(struct io_uring *ring) +{ + unsigned int ifindex; + unsigned int rq_entries = 4096; + int ret; + + ifindex = if_nametoindex(cfg_ifname); + if (!ifindex) + error(1, 0, "bad interface name: %s", cfg_ifname); + + area_ptr = mmap(NULL, + AREA_SIZE, + PROT_READ | PROT_WRITE, + MAP_ANONYMOUS | MAP_PRIVATE, + 0, + 0); + if (area_ptr == MAP_FAILED) + error(1, 0, "mmap(): zero copy area"); + + ring_size = get_refill_ring_size(rq_entries); + ring_ptr = mmap(NULL, + ring_size, + PROT_READ | PROT_WRITE, + MAP_ANONYMOUS | MAP_PRIVATE, + 0, + 0); + + struct io_uring_region_desc region_reg = { + .size = ring_size, + .user_addr = (__u64)(unsigned long)ring_ptr, + .flags = IORING_MEM_REGION_TYPE_USER, + }; + + struct io_uring_zcrx_area_reg area_reg = { + .addr = (__u64)(unsigned long)area_ptr, + .len = AREA_SIZE, + .flags = 0, + }; + + struct io_uring_zcrx_ifq_reg reg = { + .if_idx = ifindex, + .if_rxq = cfg_queue_id, + .rq_entries = rq_entries, + .area_ptr = (__u64)(unsigned long)&area_reg, + .region_ptr = (__u64)(unsigned long)®ion_reg, + }; + + ret = io_uring_register_ifq(ring, ®); + if (ret) + error(1, 0, "io_uring_register_ifq(): %d", ret); + + rq_ring.khead = (unsigned int *)((char *)ring_ptr + reg.offsets.head); + rq_ring.ktail = (unsigned int *)((char *)ring_ptr + reg.offsets.tail); + rq_ring.rqes = (struct io_uring_zcrx_rqe *)((char *)ring_ptr + reg.offsets.rqes); + rq_ring.rq_tail = 0; + rq_ring.ring_entries = reg.rq_entries; + + area_token = area_reg.rq_area_token; +} + +static void add_accept(struct io_uring *ring, int sockfd) +{ + struct io_uring_sqe *sqe; + + sqe = io_uring_get_sqe(ring); + + io_uring_prep_accept(sqe, sockfd, NULL, NULL, 0); + sqe->user_data = 1; +} + +static void add_recvzc(struct io_uring *ring, int sockfd) +{ + struct io_uring_sqe *sqe; + + sqe = io_uring_get_sqe(ring); + + io_uring_prep_rw(IORING_OP_RECV_ZC, sqe, sockfd, NULL, 0, 0); + sqe->ioprio |= IORING_RECV_MULTISHOT; + sqe->user_data = 2; +} + +static void add_recvzc_oneshot(struct io_uring *ring, int sockfd, size_t len) +{ + struct io_uring_sqe *sqe; + + sqe = io_uring_get_sqe(ring); + + io_uring_prep_rw(IORING_OP_RECV_ZC, sqe, sockfd, NULL, len, 0); + sqe->ioprio |= IORING_RECV_MULTISHOT; + sqe->user_data = 2; +} + +static void process_accept(struct io_uring *ring, struct io_uring_cqe *cqe) +{ + if (cqe->res < 0) + error(1, 0, "accept()"); + if (connfd) + error(1, 0, "Unexpected second connection"); + + connfd = cqe->res; + if (cfg_oneshot) + add_recvzc_oneshot(ring, connfd, page_size); + else + add_recvzc(ring, connfd); +} + +static void process_recvzc(struct io_uring *ring, struct io_uring_cqe *cqe) +{ + unsigned rq_mask = rq_ring.ring_entries - 1; + struct io_uring_zcrx_cqe *rcqe; + struct io_uring_zcrx_rqe *rqe; + struct io_uring_sqe *sqe; + uint64_t mask; + char *data; + ssize_t n; + int i; + + if (cqe->res == 0 && cqe->flags == 0 && cfg_oneshot_recvs == 0) { + stop = true; + return; + } + + if (cqe->res < 0) + error(1, 0, "recvzc(): %d", cqe->res); + + if (cfg_oneshot) { + if (cqe->res == 0 && cqe->flags == 0 && cfg_oneshot_recvs) { + add_recvzc_oneshot(ring, connfd, page_size); + cfg_oneshot_recvs--; + } + } else if (!(cqe->flags & IORING_CQE_F_MORE)) { + add_recvzc(ring, connfd); + } + + rcqe = (struct io_uring_zcrx_cqe *)(cqe + 1); + + n = cqe->res; + mask = (1ULL << IORING_ZCRX_AREA_SHIFT) - 1; + data = (char *)area_ptr + (rcqe->off & mask); + + for (i = 0; i < n; i++) { + if (*(data + i) != payload[(received + i)]) + error(1, 0, "payload mismatch at %d", i); + } + received += n; + + rqe = &rq_ring.rqes[(rq_ring.rq_tail & rq_mask)]; + rqe->off = (rcqe->off & ~IORING_ZCRX_AREA_MASK) | area_token; + rqe->len = cqe->res; + io_uring_smp_store_release(rq_ring.ktail, ++rq_ring.rq_tail); +} + +static void server_loop(struct io_uring *ring) +{ + struct io_uring_cqe *cqe; + unsigned int count = 0; + unsigned int head; + int i, ret; + + io_uring_submit_and_wait(ring, 1); + + io_uring_for_each_cqe(ring, head, cqe) { + if (cqe->user_data == 1) + process_accept(ring, cqe); + else if (cqe->user_data == 2) + process_recvzc(ring, cqe); + else + error(1, 0, "unknown cqe"); + count++; + } + io_uring_cq_advance(ring, count); +} + +static void run_server(void) +{ + unsigned int flags = 0; + struct io_uring ring; + int fd, enable, ret; + uint64_t tstop; + + fd = socket(AF_INET6, SOCK_STREAM, 0); + if (fd == -1) + error(1, 0, "socket()"); + + enable = 1; + ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int)); + if (ret < 0) + error(1, 0, "setsockopt(SO_REUSEADDR)"); + + ret = bind(fd, (struct sockaddr *)&cfg_addr, sizeof(cfg_addr)); + if (ret < 0) + error(1, 0, "bind()"); + + if (listen(fd, 1024) < 0) + error(1, 0, "listen()"); + + flags |= IORING_SETUP_COOP_TASKRUN; + flags |= IORING_SETUP_SINGLE_ISSUER; + flags |= IORING_SETUP_DEFER_TASKRUN; + flags |= IORING_SETUP_SUBMIT_ALL; + flags |= IORING_SETUP_CQE32; + + io_uring_queue_init(512, &ring, flags); + + setup_zcrx(&ring); + + add_accept(&ring, fd); + + tstop = gettimeofday_ms() + 5000; + while (!stop && gettimeofday_ms() < tstop) + server_loop(&ring); + + if (!stop) + error(1, 0, "test failed\n"); +} + +static void run_client(void) +{ + ssize_t to_send = cfg_send_size; + ssize_t sent = 0; + ssize_t chunk, res; + int fd; + + fd = socket(AF_INET6, SOCK_STREAM, 0); + if (fd == -1) + error(1, 0, "socket()"); + + if (connect(fd, (struct sockaddr *)&cfg_addr, sizeof(cfg_addr))) + error(1, 0, "connect()"); + + while (to_send) { + void *src = &payload[sent]; + + chunk = min_t(ssize_t, cfg_payload_len, to_send); + res = send(fd, src, chunk, 0); + if (res < 0) + error(1, 0, "send(): %zd", sent); + sent += res; + to_send -= res; + } + + close(fd); +} + +static void usage(const char *filepath) +{ + error(1, 0, "Usage: %s (-4|-6) (-s|-c) -h<server_ip> -p<port> " + "-l<payload_size> -i<ifname> -q<rxq_id>", filepath); +} + +static void parse_opts(int argc, char **argv) +{ + const int max_payload_len = SEND_SIZE - + sizeof(struct ipv6hdr) - + sizeof(struct tcphdr) - + 40 /* max tcp options */; + struct sockaddr_in6 *addr6 = (void *) &cfg_addr; + char *addr = NULL; + int ret; + int c; + + if (argc <= 1) + usage(argv[0]); + cfg_payload_len = max_payload_len; + + while ((c = getopt(argc, argv, "sch:p:l:i:q:o:z:")) != -1) { + switch (c) { + case 's': + if (cfg_client) + error(1, 0, "Pass one of -s or -c"); + cfg_server = 1; + break; + case 'c': + if (cfg_server) + error(1, 0, "Pass one of -s or -c"); + cfg_client = 1; + break; + case 'h': + addr = optarg; + break; + case 'p': + cfg_port = strtoul(optarg, NULL, 0); + break; + case 'l': + cfg_payload_len = strtoul(optarg, NULL, 0); + break; + case 'i': + cfg_ifname = optarg; + break; + case 'q': + cfg_queue_id = strtoul(optarg, NULL, 0); + break; + case 'o': { + cfg_oneshot = true; + cfg_oneshot_recvs = strtoul(optarg, NULL, 0); + break; + } + case 'z': + cfg_send_size = strtoul(optarg, NULL, 0); + break; + } + } + + if (cfg_server && addr) + error(1, 0, "Receiver cannot have -h specified"); + + memset(addr6, 0, sizeof(*addr6)); + addr6->sin6_family = AF_INET6; + addr6->sin6_port = htons(cfg_port); + addr6->sin6_addr = in6addr_any; + if (addr) { + ret = parse_address(addr, cfg_port, addr6); + if (ret) + error(1, 0, "receiver address parse error: %s", addr); + } + + if (cfg_payload_len > max_payload_len) + error(1, 0, "-l: payload exceeds max (%d)", max_payload_len); +} + +int main(int argc, char **argv) +{ + const char *cfg_test = argv[argc - 1]; + int i; + + page_size = sysconf(_SC_PAGESIZE); + if (page_size < 0) + return 1; + + if (posix_memalign((void **)&payload, page_size, SEND_SIZE)) + return 1; + + parse_opts(argc, argv); + + for (i = 0; i < SEND_SIZE; i++) + payload[i] = 'a' + (i % 26); + + if (cfg_server) + run_server(); + else if (cfg_client) + run_client(); + + return 0; +} diff --git a/tools/testing/selftests/drivers/net/hw/iou-zcrx.py b/tools/testing/selftests/drivers/net/hw/iou-zcrx.py new file mode 100755 index 000000000000..712c806508b5 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/iou-zcrx.py @@ -0,0 +1,145 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +import re +from os import path +from lib.py import ksft_run, ksft_exit, KsftSkipEx +from lib.py import NetDrvEpEnv +from lib.py import bkg, cmd, defer, ethtool, rand_port, wait_port_listen + + +def _get_current_settings(cfg): + output = ethtool(f"-g {cfg.ifname}", json=True)[0] + return (output['rx'], output['hds-thresh']) + + +def _get_combined_channels(cfg): + output = ethtool(f"-l {cfg.ifname}").stdout + values = re.findall(r'Combined:\s+(\d+)', output) + return int(values[1]) + + +def _create_rss_ctx(cfg, chan): + output = ethtool(f"-X {cfg.ifname} context new start {chan} equal 1").stdout + values = re.search(r'New RSS context is (\d+)', output).group(1) + ctx_id = int(values) + return (ctx_id, defer(ethtool, f"-X {cfg.ifname} delete context {ctx_id}")) + + +def _set_flow_rule(cfg, port, chan): + output = ethtool(f"-N {cfg.ifname} flow-type tcp6 dst-port {port} action {chan}").stdout + values = re.search(r'ID (\d+)', output).group(1) + return int(values) + + +def _set_flow_rule_rss(cfg, port, ctx_id): + output = ethtool(f"-N {cfg.ifname} flow-type tcp6 dst-port {port} context {ctx_id}").stdout + values = re.search(r'ID (\d+)', output).group(1) + return int(values) + + +def test_zcrx(cfg) -> None: + cfg.require_ipver('6') + + combined_chans = _get_combined_channels(cfg) + if combined_chans < 2: + raise KsftSkipEx('at least 2 combined channels required') + (rx_ring, hds_thresh) = _get_current_settings(cfg) + port = rand_port() + + ethtool(f"-G {cfg.ifname} tcp-data-split on") + defer(ethtool, f"-G {cfg.ifname} tcp-data-split auto") + + ethtool(f"-G {cfg.ifname} hds-thresh 0") + defer(ethtool, f"-G {cfg.ifname} hds-thresh {hds_thresh}") + + ethtool(f"-G {cfg.ifname} rx 64") + defer(ethtool, f"-G {cfg.ifname} rx {rx_ring}") + + ethtool(f"-X {cfg.ifname} equal {combined_chans - 1}") + defer(ethtool, f"-X {cfg.ifname} default") + + flow_rule_id = _set_flow_rule(cfg, port, combined_chans - 1) + defer(ethtool, f"-N {cfg.ifname} delete {flow_rule_id}") + + rx_cmd = f"{cfg.bin_local} -s -p {port} -i {cfg.ifname} -q {combined_chans - 1}" + tx_cmd = f"{cfg.bin_remote} -c -h {cfg.addr_v['6']} -p {port} -l 12840" + with bkg(rx_cmd, exit_wait=True): + wait_port_listen(port, proto="tcp") + cmd(tx_cmd, host=cfg.remote) + + +def test_zcrx_oneshot(cfg) -> None: + cfg.require_ipver('6') + + combined_chans = _get_combined_channels(cfg) + if combined_chans < 2: + raise KsftSkipEx('at least 2 combined channels required') + (rx_ring, hds_thresh) = _get_current_settings(cfg) + port = rand_port() + + ethtool(f"-G {cfg.ifname} tcp-data-split on") + defer(ethtool, f"-G {cfg.ifname} tcp-data-split auto") + + ethtool(f"-G {cfg.ifname} hds-thresh 0") + defer(ethtool, f"-G {cfg.ifname} hds-thresh {hds_thresh}") + + ethtool(f"-G {cfg.ifname} rx 64") + defer(ethtool, f"-G {cfg.ifname} rx {rx_ring}") + + ethtool(f"-X {cfg.ifname} equal {combined_chans - 1}") + defer(ethtool, f"-X {cfg.ifname} default") + + flow_rule_id = _set_flow_rule(cfg, port, combined_chans - 1) + defer(ethtool, f"-N {cfg.ifname} delete {flow_rule_id}") + + rx_cmd = f"{cfg.bin_local} -s -p {port} -i {cfg.ifname} -q {combined_chans - 1} -o 4" + tx_cmd = f"{cfg.bin_remote} -c -h {cfg.addr_v['6']} -p {port} -l 4096 -z 16384" + with bkg(rx_cmd, exit_wait=True): + wait_port_listen(port, proto="tcp") + cmd(tx_cmd, host=cfg.remote) + + +def test_zcrx_rss(cfg) -> None: + cfg.require_ipver('6') + + combined_chans = _get_combined_channels(cfg) + if combined_chans < 2: + raise KsftSkipEx('at least 2 combined channels required') + (rx_ring, hds_thresh) = _get_current_settings(cfg) + port = rand_port() + + ethtool(f"-G {cfg.ifname} tcp-data-split on") + defer(ethtool, f"-G {cfg.ifname} tcp-data-split auto") + + ethtool(f"-G {cfg.ifname} hds-thresh 0") + defer(ethtool, f"-G {cfg.ifname} hds-thresh {hds_thresh}") + + ethtool(f"-G {cfg.ifname} rx 64") + defer(ethtool, f"-G {cfg.ifname} rx {rx_ring}") + + ethtool(f"-X {cfg.ifname} equal {combined_chans - 1}") + defer(ethtool, f"-X {cfg.ifname} default") + + (ctx_id, delete_ctx) = _create_rss_ctx(cfg, combined_chans - 1) + flow_rule_id = _set_flow_rule_rss(cfg, port, ctx_id) + defer(ethtool, f"-N {cfg.ifname} delete {flow_rule_id}") + + rx_cmd = f"{cfg.bin_local} -s -p {port} -i {cfg.ifname} -q {combined_chans - 1}" + tx_cmd = f"{cfg.bin_remote} -c -h {cfg.addr_v['6']} -p {port} -l 12840" + with bkg(rx_cmd, exit_wait=True): + wait_port_listen(port, proto="tcp") + cmd(tx_cmd, host=cfg.remote) + + +def main() -> None: + with NetDrvEpEnv(__file__) as cfg: + cfg.bin_local = path.abspath(path.dirname(__file__) + "/../../../drivers/net/hw/iou-zcrx") + cfg.bin_remote = cfg.remote.deploy(cfg.bin_local) + + ksft_run(globs=globals(), case_pfx={"test_"}, args=(cfg, )) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hw/irq.py b/tools/testing/selftests/drivers/net/hw/irq.py new file mode 100755 index 000000000000..0699d6a8b4e2 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/irq.py @@ -0,0 +1,99 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +from lib.py import ksft_run, ksft_exit +from lib.py import ksft_ge, ksft_eq +from lib.py import KsftSkipEx +from lib.py import ksft_disruptive +from lib.py import EthtoolFamily, NetdevFamily +from lib.py import NetDrvEnv +from lib.py import cmd, ip, defer + + +def read_affinity(irq) -> str: + with open(f'/proc/irq/{irq}/smp_affinity', 'r') as fp: + return fp.read().lstrip("0,").strip() + + +def write_affinity(irq, what) -> str: + if what != read_affinity(irq): + with open(f'/proc/irq/{irq}/smp_affinity', 'w') as fp: + fp.write(what) + + +def check_irqs_reported(cfg) -> None: + """ Check that device reports IRQs for NAPI instances """ + napis = cfg.netnl.napi_get({"ifindex": cfg.ifindex}, dump=True) + irqs = sum(['irq' in x for x in napis]) + + ksft_ge(irqs, 1) + ksft_eq(irqs, len(napis)) + + +def _check_reconfig(cfg, reconfig_cb) -> None: + napis = cfg.netnl.napi_get({"ifindex": cfg.ifindex}, dump=True) + for n in reversed(napis): + if 'irq' in n: + break + else: + raise KsftSkipEx(f"Device has no NAPI with IRQ attribute (#napis: {len(napis)}") + + old = read_affinity(n['irq']) + # pick an affinity that's not the current one + new = "3" if old != "3" else "5" + write_affinity(n['irq'], new) + defer(write_affinity, n['irq'], old) + + reconfig_cb(cfg) + + ksft_eq(read_affinity(n['irq']), new, comment="IRQ affinity changed after reconfig") + + +def check_reconfig_queues(cfg) -> None: + def reconfig(cfg) -> None: + channels = cfg.ethnl.channels_get({'header': {'dev-index': cfg.ifindex}}) + if channels['combined-count'] == 0: + rx_type = 'rx' + else: + rx_type = 'combined' + cur_queue_cnt = channels[f'{rx_type}-count'] + max_queue_cnt = channels[f'{rx_type}-max'] + + cmd(f"ethtool -L {cfg.ifname} {rx_type} 1") + cmd(f"ethtool -L {cfg.ifname} {rx_type} {max_queue_cnt}") + cmd(f"ethtool -L {cfg.ifname} {rx_type} {cur_queue_cnt}") + + _check_reconfig(cfg, reconfig) + + +def check_reconfig_xdp(cfg) -> None: + def reconfig(cfg) -> None: + ip(f"link set dev %s xdp obj %s sec xdp" % + (cfg.ifname, cfg.net_lib_dir / "xdp_dummy.bpf.o")) + ip(f"link set dev %s xdp off" % cfg.ifname) + + _check_reconfig(cfg, reconfig) + + +@ksft_disruptive +def check_down(cfg) -> None: + def reconfig(cfg) -> None: + ip("link set dev %s down" % cfg.ifname) + ip("link set dev %s up" % cfg.ifname) + + _check_reconfig(cfg, reconfig) + + +def main() -> None: + with NetDrvEnv(__file__, nsim_test=False) as cfg: + cfg.ethnl = EthtoolFamily() + cfg.netnl = NetdevFamily() + + ksft_run([check_irqs_reported, check_reconfig_queues, + check_reconfig_xdp, check_down], + args=(cfg, )) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py b/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py index b582885786f5..766bfc4ad842 100644 --- a/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py +++ b/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py @@ -1,5 +1,13 @@ # SPDX-License-Identifier: GPL-2.0 +""" +Driver test environment (hardware-only tests). +NetDrvEnv and NetDrvEpEnv are the main environment classes. +Former is for local host only tests, latter creates / connects +to a remote endpoint. See NIPA wiki for more information about +running and writing driver tests. +""" + import sys from pathlib import Path @@ -7,10 +15,38 @@ KSFT_DIR = (Path(__file__).parent / "../../../../..").resolve() try: sys.path.append(KSFT_DIR.as_posix()) - from net.lib.py import * - from drivers.net.lib.py import * + + # Import one by one to avoid pylint false positives + from net.lib.py import NetNS, NetNSEnter, NetdevSimDev + from net.lib.py import EthtoolFamily, NetdevFamily, NetshaperFamily, \ + NlError, RtnlFamily, DevlinkFamily, PSPFamily + from net.lib.py import CmdExitFailure + from net.lib.py import bkg, cmd, bpftool, bpftrace, defer, ethtool, \ + fd_read_timeout, ip, rand_port, wait_port_listen, wait_file + from net.lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx + from net.lib.py import ksft_disruptive, ksft_exit, ksft_pr, ksft_run, \ + ksft_setup, ksft_variants, KsftNamedVariant + from net.lib.py import ksft_eq, ksft_ge, ksft_in, ksft_is, ksft_lt, \ + ksft_ne, ksft_not_in, ksft_raises, ksft_true, ksft_gt, ksft_not_none + from drivers.net.lib.py import GenerateTraffic, Remote, Iperf3Runner + from drivers.net.lib.py import NetDrvEnv, NetDrvEpEnv + + __all__ = ["NetNS", "NetNSEnter", "NetdevSimDev", + "EthtoolFamily", "NetdevFamily", "NetshaperFamily", + "NlError", "RtnlFamily", "DevlinkFamily", "PSPFamily", + "CmdExitFailure", + "bkg", "cmd", "bpftool", "bpftrace", "defer", "ethtool", + "fd_read_timeout", "ip", "rand_port", + "wait_port_listen", "wait_file", + "KsftSkipEx", "KsftFailEx", "KsftXfailEx", + "ksft_disruptive", "ksft_exit", "ksft_pr", "ksft_run", + "ksft_setup", "ksft_variants", "KsftNamedVariant", + "ksft_eq", "ksft_ge", "ksft_in", "ksft_is", "ksft_lt", + "ksft_ne", "ksft_not_in", "ksft_raises", "ksft_true", "ksft_gt", + "ksft_not_none", "ksft_not_none", + "NetDrvEnv", "NetDrvEpEnv", "GenerateTraffic", "Remote", + "Iperf3Runner"] except ModuleNotFoundError as e: - ksft_pr("Failed importing `net` library from kernel sources") - ksft_pr(str(e)) - ktap_result(True, comment="SKIP") + print("Failed importing `net` library from kernel sources") + print(str(e)) sys.exit(4) diff --git a/tools/testing/selftests/drivers/net/hw/ncdevmem.c b/tools/testing/selftests/drivers/net/hw/ncdevmem.c new file mode 100644 index 000000000000..3288ed04ce08 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/ncdevmem.c @@ -0,0 +1,1524 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * tcpdevmem netcat. Works similarly to netcat but does device memory TCP + * instead of regular TCP. Uses udmabuf to mock a dmabuf provider. + * + * Usage: + * + * On server: + * ncdevmem -s <server IP> [-c <client IP>] -f eth1 -l -p 5201 + * + * On client: + * echo -n "hello\nworld" | \ + * ncdevmem -s <server IP> [-c <client IP>] -p 5201 -f eth1 + * + * Note this is compatible with regular netcat. i.e. the sender or receiver can + * be replaced with regular netcat to test the RX or TX path in isolation. + * + * Test data validation (devmem TCP on RX only): + * + * On server: + * ncdevmem -s <server IP> [-c <client IP>] -f eth1 -l -p 5201 -v 7 + * + * On client: + * yes $(echo -e \\x01\\x02\\x03\\x04\\x05\\x06) | \ + * head -c 1G | \ + * nc <server IP> 5201 -p 5201 + * + * Test data validation (devmem TCP on RX and TX, validation happens on RX): + * + * On server: + * ncdevmem -s <server IP> [-c <client IP>] -l -p 5201 -v 8 -f eth1 + * + * On client: + * yes $(echo -e \\x01\\x02\\x03\\x04\\x05\\x06\\x07) | \ + * head -c 1M | \ + * ncdevmem -s <server IP> [-c <client IP>] -p 5201 -f eth1 + */ +#define _GNU_SOURCE +#define __EXPORTED_HEADERS__ + +#include <linux/uio.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <stdbool.h> +#include <string.h> +#include <errno.h> +#define __iovec_defined +#include <fcntl.h> +#include <malloc.h> +#include <error.h> +#include <poll.h> + +#include <arpa/inet.h> +#include <sys/socket.h> +#include <sys/mman.h> +#include <sys/ioctl.h> +#include <sys/syscall.h> +#include <sys/time.h> + +#include <linux/memfd.h> +#include <linux/dma-buf.h> +#include <linux/errqueue.h> +#include <linux/udmabuf.h> +#include <linux/types.h> +#include <linux/netlink.h> +#include <linux/genetlink.h> +#include <linux/netdev.h> +#include <linux/ethtool_netlink.h> +#include <time.h> +#include <net/if.h> + +#include "netdev-user.h" +#include "ethtool-user.h" +#include <ynl.h> + +#define PAGE_SHIFT 12 +#define TEST_PREFIX "ncdevmem" +#define NUM_PAGES 16000 + +#ifndef MSG_SOCK_DEVMEM +#define MSG_SOCK_DEVMEM 0x2000000 +#endif + +#define MAX_IOV 1024 + +static size_t max_chunk; +static char *server_ip; +static char *client_ip; +static char *port; +static size_t do_validation; +static int start_queue = -1; +static int num_queues = -1; +static char *ifname; +static unsigned int ifindex; +static unsigned int dmabuf_id; +static uint32_t tx_dmabuf_id; +static int waittime_ms = 500; + +/* System state loaded by current_config_load() */ +#define MAX_FLOWS 8 +static int ntuple_ids[MAX_FLOWS] = { -1, -1, -1, -1, -1, -1, -1, -1, }; + +struct memory_buffer { + int fd; + size_t size; + + int devfd; + int memfd; + char *buf_mem; +}; + +struct memory_provider { + struct memory_buffer *(*alloc)(size_t size); + void (*free)(struct memory_buffer *ctx); + void (*memcpy_to_device)(struct memory_buffer *dst, size_t off, + void *src, int n); + void (*memcpy_from_device)(void *dst, struct memory_buffer *src, + size_t off, int n); +}; + +static void pr_err(const char *fmt, ...) +{ + va_list args; + + fprintf(stderr, "%s: ", TEST_PREFIX); + + va_start(args, fmt); + vfprintf(stderr, fmt, args); + va_end(args); + + if (errno != 0) + fprintf(stderr, ": %s", strerror(errno)); + fprintf(stderr, "\n"); +} + +static struct memory_buffer *udmabuf_alloc(size_t size) +{ + struct udmabuf_create create; + struct memory_buffer *ctx; + int ret; + + ctx = malloc(sizeof(*ctx)); + if (!ctx) + return NULL; + + ctx->size = size; + + ctx->devfd = open("/dev/udmabuf", O_RDWR); + if (ctx->devfd < 0) { + pr_err("[skip,no-udmabuf: Unable to access DMA buffer device file]"); + goto err_free_ctx; + } + + ctx->memfd = memfd_create("udmabuf-test", MFD_ALLOW_SEALING); + if (ctx->memfd < 0) { + pr_err("[skip,no-memfd]"); + goto err_close_dev; + } + + ret = fcntl(ctx->memfd, F_ADD_SEALS, F_SEAL_SHRINK); + if (ret < 0) { + pr_err("[skip,fcntl-add-seals]"); + goto err_close_memfd; + } + + ret = ftruncate(ctx->memfd, size); + if (ret == -1) { + pr_err("[FAIL,memfd-truncate]"); + goto err_close_memfd; + } + + memset(&create, 0, sizeof(create)); + + create.memfd = ctx->memfd; + create.offset = 0; + create.size = size; + ctx->fd = ioctl(ctx->devfd, UDMABUF_CREATE, &create); + if (ctx->fd < 0) { + pr_err("[FAIL, create udmabuf]"); + goto err_close_fd; + } + + ctx->buf_mem = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, + ctx->fd, 0); + if (ctx->buf_mem == MAP_FAILED) { + pr_err("[FAIL, map udmabuf]"); + goto err_close_fd; + } + + return ctx; + +err_close_fd: + close(ctx->fd); +err_close_memfd: + close(ctx->memfd); +err_close_dev: + close(ctx->devfd); +err_free_ctx: + free(ctx); + return NULL; +} + +static void udmabuf_free(struct memory_buffer *ctx) +{ + munmap(ctx->buf_mem, ctx->size); + close(ctx->fd); + close(ctx->memfd); + close(ctx->devfd); + free(ctx); +} + +static void udmabuf_memcpy_to_device(struct memory_buffer *dst, size_t off, + void *src, int n) +{ + struct dma_buf_sync sync = {}; + + sync.flags = DMA_BUF_SYNC_START | DMA_BUF_SYNC_WRITE; + ioctl(dst->fd, DMA_BUF_IOCTL_SYNC, &sync); + + memcpy(dst->buf_mem + off, src, n); + + sync.flags = DMA_BUF_SYNC_END | DMA_BUF_SYNC_WRITE; + ioctl(dst->fd, DMA_BUF_IOCTL_SYNC, &sync); +} + +static void udmabuf_memcpy_from_device(void *dst, struct memory_buffer *src, + size_t off, int n) +{ + struct dma_buf_sync sync = {}; + + sync.flags = DMA_BUF_SYNC_START; + ioctl(src->fd, DMA_BUF_IOCTL_SYNC, &sync); + + memcpy(dst, src->buf_mem + off, n); + + sync.flags = DMA_BUF_SYNC_END; + ioctl(src->fd, DMA_BUF_IOCTL_SYNC, &sync); +} + +static struct memory_provider udmabuf_memory_provider = { + .alloc = udmabuf_alloc, + .free = udmabuf_free, + .memcpy_to_device = udmabuf_memcpy_to_device, + .memcpy_from_device = udmabuf_memcpy_from_device, +}; + +static struct memory_provider *provider = &udmabuf_memory_provider; + +static void print_nonzero_bytes(void *ptr, size_t size) +{ + unsigned char *p = ptr; + unsigned int i; + + for (i = 0; i < size; i++) + putchar(p[i]); +} + +int validate_buffer(void *line, size_t size) +{ + static unsigned char seed = 1; + unsigned char *ptr = line; + unsigned char expected; + static int errors; + size_t i; + + for (i = 0; i < size; i++) { + expected = seed ? seed : '\n'; + if (ptr[i] != expected) { + fprintf(stderr, + "Failed validation: expected=%u, actual=%u, index=%lu\n", + expected, ptr[i], i); + errors++; + if (errors > 20) { + pr_err("validation failed"); + return -1; + } + } + seed++; + if (seed == do_validation) + seed = 0; + } + + fprintf(stdout, "Validated buffer\n"); + return 0; +} + +static int +__run_command(char *out, size_t outlen, const char *cmd, va_list args) +{ + char command[256]; + FILE *fp; + + vsnprintf(command, sizeof(command), cmd, args); + + fprintf(stderr, "Running: %s\n", command); + fp = popen(command, "r"); + if (!fp) + return -1; + if (out) { + size_t len; + + if (!fgets(out, outlen, fp)) + return -1; + + /* Remove trailing newline if present */ + len = strlen(out); + if (len && out[len - 1] == '\n') + out[len - 1] = '\0'; + } + return pclose(fp); +} + +static int run_command(const char *cmd, ...) +{ + va_list args; + int ret; + + va_start(args, cmd); + ret = __run_command(NULL, 0, cmd, args); + va_end(args); + + return ret; +} + +static int ethtool_add_flow(const char *format, ...) +{ + char local_output[256], cmd[256]; + const char *id_start; + int flow_idx, ret; + char *endptr; + long flow_id; + va_list args; + + for (flow_idx = 0; flow_idx < MAX_FLOWS; flow_idx++) + if (ntuple_ids[flow_idx] == -1) + break; + if (flow_idx == MAX_FLOWS) { + fprintf(stderr, "Error: too many flows\n"); + return -1; + } + + snprintf(cmd, sizeof(cmd), "ethtool -N %s %s", ifname, format); + + va_start(args, format); + ret = __run_command(local_output, sizeof(local_output), cmd, args); + va_end(args); + + if (ret != 0) + return ret; + + /* Extract the ID from the output */ + id_start = strstr(local_output, "Added rule with ID "); + if (!id_start) + return -1; + id_start += strlen("Added rule with ID "); + + flow_id = strtol(id_start, &endptr, 10); + if (endptr == id_start || flow_id < 0 || flow_id > INT_MAX) + return -1; + + fprintf(stderr, "Added flow rule with ID %ld\n", flow_id); + ntuple_ids[flow_idx] = flow_id; + return flow_id; +} + +static int rxq_num(int ifindex) +{ + struct ethtool_channels_get_req *req; + struct ethtool_channels_get_rsp *rsp; + struct ynl_error yerr; + struct ynl_sock *ys; + int num = -1; + + ys = ynl_sock_create(&ynl_ethtool_family, &yerr); + if (!ys) { + fprintf(stderr, "YNL: %s\n", yerr.msg); + return -1; + } + + req = ethtool_channels_get_req_alloc(); + ethtool_channels_get_req_set_header_dev_index(req, ifindex); + rsp = ethtool_channels_get(ys, req); + if (rsp) + num = rsp->rx_count + rsp->combined_count; + ethtool_channels_get_req_free(req); + ethtool_channels_get_rsp_free(rsp); + + ynl_sock_destroy(ys); + + return num; +} + +static void reset_flow_steering(void) +{ + int i; + + for (i = 0; i < MAX_FLOWS; i++) { + if (ntuple_ids[i] == -1) + continue; + run_command("ethtool -N %s delete %d", + ifname, ntuple_ids[i]); + ntuple_ids[i] = -1; + } +} + +static const char *tcp_data_split_str(int val) +{ + switch (val) { + case 0: + return "off"; + case 1: + return "auto"; + case 2: + return "on"; + default: + return "?"; + } +} + +static struct ethtool_rings_get_rsp *get_ring_config(void) +{ + struct ethtool_rings_get_req *get_req; + struct ethtool_rings_get_rsp *get_rsp; + struct ynl_error yerr; + struct ynl_sock *ys; + + ys = ynl_sock_create(&ynl_ethtool_family, &yerr); + if (!ys) { + fprintf(stderr, "YNL: %s\n", yerr.msg); + return NULL; + } + + get_req = ethtool_rings_get_req_alloc(); + ethtool_rings_get_req_set_header_dev_index(get_req, ifindex); + get_rsp = ethtool_rings_get(ys, get_req); + ethtool_rings_get_req_free(get_req); + + ynl_sock_destroy(ys); + + return get_rsp; +} + +static void restore_ring_config(const struct ethtool_rings_get_rsp *config) +{ + struct ethtool_rings_get_req *get_req; + struct ethtool_rings_get_rsp *get_rsp; + struct ethtool_rings_set_req *req; + struct ynl_error yerr; + struct ynl_sock *ys; + int ret; + + if (!config) + return; + + ys = ynl_sock_create(&ynl_ethtool_family, &yerr); + if (!ys) { + fprintf(stderr, "YNL: %s\n", yerr.msg); + return; + } + + req = ethtool_rings_set_req_alloc(); + ethtool_rings_set_req_set_header_dev_index(req, ifindex); + ethtool_rings_set_req_set_tcp_data_split(req, + ETHTOOL_TCP_DATA_SPLIT_UNKNOWN); + if (config->_present.hds_thresh) + ethtool_rings_set_req_set_hds_thresh(req, config->hds_thresh); + + ret = ethtool_rings_set(ys, req); + if (ret < 0) + fprintf(stderr, "YNL restoring HDS cfg: %s\n", ys->err.msg); + + get_req = ethtool_rings_get_req_alloc(); + ethtool_rings_get_req_set_header_dev_index(get_req, ifindex); + get_rsp = ethtool_rings_get(ys, get_req); + ethtool_rings_get_req_free(get_req); + + /* use explicit value if UKNOWN didn't give us the previous */ + if (get_rsp->tcp_data_split != config->tcp_data_split) { + ethtool_rings_set_req_set_tcp_data_split(req, + config->tcp_data_split); + ret = ethtool_rings_set(ys, req); + if (ret < 0) + fprintf(stderr, "YNL restoring expl HDS cfg: %s\n", + ys->err.msg); + } + + ethtool_rings_get_rsp_free(get_rsp); + ethtool_rings_set_req_free(req); + + ynl_sock_destroy(ys); +} + +static int +configure_headersplit(const struct ethtool_rings_get_rsp *old, bool on) +{ + struct ethtool_rings_get_req *get_req; + struct ethtool_rings_get_rsp *get_rsp; + struct ethtool_rings_set_req *req; + struct ynl_error yerr; + struct ynl_sock *ys; + int ret; + + ys = ynl_sock_create(&ynl_ethtool_family, &yerr); + if (!ys) { + fprintf(stderr, "YNL: %s\n", yerr.msg); + return -1; + } + + req = ethtool_rings_set_req_alloc(); + ethtool_rings_set_req_set_header_dev_index(req, ifindex); + if (on) { + ethtool_rings_set_req_set_tcp_data_split(req, + ETHTOOL_TCP_DATA_SPLIT_ENABLED); + if (old->_present.hds_thresh) + ethtool_rings_set_req_set_hds_thresh(req, 0); + } else { + ethtool_rings_set_req_set_tcp_data_split(req, + ETHTOOL_TCP_DATA_SPLIT_UNKNOWN); + } + ret = ethtool_rings_set(ys, req); + if (ret < 0) + fprintf(stderr, "YNL failed: %s\n", ys->err.msg); + ethtool_rings_set_req_free(req); + + if (ret == 0) { + get_req = ethtool_rings_get_req_alloc(); + ethtool_rings_get_req_set_header_dev_index(get_req, ifindex); + get_rsp = ethtool_rings_get(ys, get_req); + ethtool_rings_get_req_free(get_req); + if (get_rsp) + fprintf(stderr, "TCP header split: %s\n", + tcp_data_split_str(get_rsp->tcp_data_split)); + ethtool_rings_get_rsp_free(get_rsp); + } + + ynl_sock_destroy(ys); + + return ret; +} + +static int configure_rss(void) +{ + return run_command("ethtool -X %s equal %d >&2", ifname, start_queue); +} + +static void reset_rss(void) +{ + run_command("ethtool -X %s default >&2", ifname, start_queue); +} + +static int check_changing_channels(unsigned int rx, unsigned int tx) +{ + struct ethtool_channels_get_req *gchan; + struct ethtool_channels_set_req *schan; + struct ethtool_channels_get_rsp *chan; + struct ynl_error yerr; + struct ynl_sock *ys; + int ret; + + fprintf(stderr, "setting channel count rx:%u tx:%u\n", rx, tx); + + ys = ynl_sock_create(&ynl_ethtool_family, &yerr); + if (!ys) { + fprintf(stderr, "YNL: %s\n", yerr.msg); + return -1; + } + + gchan = ethtool_channels_get_req_alloc(); + if (!gchan) { + ret = -1; + goto exit_close_sock; + } + + ethtool_channels_get_req_set_header_dev_index(gchan, ifindex); + chan = ethtool_channels_get(ys, gchan); + ethtool_channels_get_req_free(gchan); + if (!chan) { + fprintf(stderr, "YNL get channels: %s\n", ys->err.msg); + ret = -1; + goto exit_close_sock; + } + + schan = ethtool_channels_set_req_alloc(); + if (!schan) { + ret = -1; + goto exit_free_chan; + } + + ethtool_channels_set_req_set_header_dev_index(schan, ifindex); + + if (chan->_present.combined_count) { + if (chan->_present.rx_count || chan->_present.tx_count) { + ethtool_channels_set_req_set_rx_count(schan, 0); + ethtool_channels_set_req_set_tx_count(schan, 0); + } + + if (rx == tx) { + ethtool_channels_set_req_set_combined_count(schan, rx); + } else if (rx > tx) { + ethtool_channels_set_req_set_combined_count(schan, tx); + ethtool_channels_set_req_set_rx_count(schan, rx - tx); + } else { + ethtool_channels_set_req_set_combined_count(schan, rx); + ethtool_channels_set_req_set_tx_count(schan, tx - rx); + } + + } else if (chan->_present.rx_count) { + ethtool_channels_set_req_set_rx_count(schan, rx); + ethtool_channels_set_req_set_tx_count(schan, tx); + } else { + fprintf(stderr, "Error: device has neither combined nor rx channels\n"); + ret = -1; + goto exit_free_schan; + } + + ret = ethtool_channels_set(ys, schan); + if (ret) { + fprintf(stderr, "YNL set channels: %s\n", ys->err.msg); + } else { + /* We were expecting a failure, go back to previous settings */ + ethtool_channels_set_req_set_combined_count(schan, + chan->combined_count); + ethtool_channels_set_req_set_rx_count(schan, chan->rx_count); + ethtool_channels_set_req_set_tx_count(schan, chan->tx_count); + + ret = ethtool_channels_set(ys, schan); + if (ret) + fprintf(stderr, "YNL un-setting channels: %s\n", + ys->err.msg); + } + +exit_free_schan: + ethtool_channels_set_req_free(schan); +exit_free_chan: + ethtool_channels_get_rsp_free(chan); +exit_close_sock: + ynl_sock_destroy(ys); + + return ret; +} + +static int configure_flow_steering(struct sockaddr_in6 *server_sin) +{ + const char *type = "tcp6"; + const char *server_addr; + char buf[40]; + int flow_id; + + inet_ntop(AF_INET6, &server_sin->sin6_addr, buf, sizeof(buf)); + server_addr = buf; + + if (IN6_IS_ADDR_V4MAPPED(&server_sin->sin6_addr)) { + type = "tcp4"; + server_addr = strrchr(server_addr, ':') + 1; + } + + /* Try configure 5-tuple */ + flow_id = ethtool_add_flow("flow-type %s %s %s dst-ip %s %s %s dst-port %s queue %d", + type, + client_ip ? "src-ip" : "", + client_ip ?: "", + server_addr, + client_ip ? "src-port" : "", + client_ip ? port : "", + port, start_queue); + if (flow_id < 0) { + /* If that fails, try configure 3-tuple */ + flow_id = ethtool_add_flow("flow-type %s dst-ip %s dst-port %s queue %d", + type, server_addr, port, start_queue); + if (flow_id < 0) + /* If that fails, return error */ + return -1; + } + + return 0; +} + +static int bind_rx_queue(unsigned int ifindex, unsigned int dmabuf_fd, + struct netdev_queue_id *queues, + unsigned int n_queue_index, struct ynl_sock **ys) +{ + struct netdev_bind_rx_req *req = NULL; + struct netdev_bind_rx_rsp *rsp = NULL; + struct ynl_error yerr; + + *ys = ynl_sock_create(&ynl_netdev_family, &yerr); + if (!*ys) { + netdev_queue_id_free(queues); + fprintf(stderr, "YNL: %s\n", yerr.msg); + return -1; + } + + req = netdev_bind_rx_req_alloc(); + netdev_bind_rx_req_set_ifindex(req, ifindex); + netdev_bind_rx_req_set_fd(req, dmabuf_fd); + __netdev_bind_rx_req_set_queues(req, queues, n_queue_index); + + rsp = netdev_bind_rx(*ys, req); + if (!rsp) { + perror("netdev_bind_rx"); + goto err_close; + } + + if (!rsp->_present.id) { + perror("id not present"); + goto err_close; + } + + fprintf(stderr, "got dmabuf id=%d\n", rsp->id); + dmabuf_id = rsp->id; + + netdev_bind_rx_req_free(req); + netdev_bind_rx_rsp_free(rsp); + + return 0; + +err_close: + fprintf(stderr, "YNL failed: %s\n", (*ys)->err.msg); + netdev_bind_rx_req_free(req); + ynl_sock_destroy(*ys); + return -1; +} + +static int bind_tx_queue(unsigned int ifindex, unsigned int dmabuf_fd, + struct ynl_sock **ys) +{ + struct netdev_bind_tx_req *req = NULL; + struct netdev_bind_tx_rsp *rsp = NULL; + struct ynl_error yerr; + + *ys = ynl_sock_create(&ynl_netdev_family, &yerr); + if (!*ys) { + fprintf(stderr, "YNL: %s\n", yerr.msg); + return -1; + } + + req = netdev_bind_tx_req_alloc(); + netdev_bind_tx_req_set_ifindex(req, ifindex); + netdev_bind_tx_req_set_fd(req, dmabuf_fd); + + rsp = netdev_bind_tx(*ys, req); + if (!rsp) { + perror("netdev_bind_tx"); + goto err_close; + } + + if (!rsp->_present.id) { + perror("id not present"); + goto err_close; + } + + fprintf(stderr, "got tx dmabuf id=%d\n", rsp->id); + tx_dmabuf_id = rsp->id; + + netdev_bind_tx_req_free(req); + netdev_bind_tx_rsp_free(rsp); + + return 0; + +err_close: + fprintf(stderr, "YNL failed: %s\n", (*ys)->err.msg); + netdev_bind_tx_req_free(req); + ynl_sock_destroy(*ys); + return -1; +} + +static int enable_reuseaddr(int fd) +{ + int opt = 1; + int ret; + + ret = setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)); + if (ret) { + pr_err("SO_REUSEPORT failed"); + return -1; + } + + ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)); + if (ret) { + pr_err("SO_REUSEADDR failed"); + return -1; + } + + return 0; +} + +static int parse_address(const char *str, int port, struct sockaddr_in6 *sin6) +{ + int ret; + + sin6->sin6_family = AF_INET6; + sin6->sin6_port = htons(port); + + ret = inet_pton(sin6->sin6_family, str, &sin6->sin6_addr); + if (ret != 1) { + /* fallback to plain IPv4 */ + ret = inet_pton(AF_INET, str, &sin6->sin6_addr.s6_addr32[3]); + if (ret != 1) + return -1; + + /* add ::ffff prefix */ + sin6->sin6_addr.s6_addr32[0] = 0; + sin6->sin6_addr.s6_addr32[1] = 0; + sin6->sin6_addr.s6_addr16[4] = 0; + sin6->sin6_addr.s6_addr16[5] = 0xffff; + } + + return 0; +} + +static struct netdev_queue_id *create_queues(void) +{ + struct netdev_queue_id *queues; + size_t i = 0; + + queues = netdev_queue_id_alloc(num_queues); + for (i = 0; i < num_queues; i++) { + netdev_queue_id_set_type(&queues[i], NETDEV_QUEUE_TYPE_RX); + netdev_queue_id_set_id(&queues[i], start_queue + i); + } + + return queues; +} + +static int do_server(struct memory_buffer *mem) +{ + struct ethtool_rings_get_rsp *ring_config; + char ctrl_data[sizeof(int) * 20000]; + size_t non_page_aligned_frags = 0; + struct sockaddr_in6 client_addr; + struct sockaddr_in6 server_sin; + size_t page_aligned_frags = 0; + size_t total_received = 0; + socklen_t client_addr_len; + bool is_devmem = false; + char *tmp_mem = NULL; + struct ynl_sock *ys; + char iobuf[819200]; + int ret, err = -1; + char buffer[256]; + int socket_fd; + int client_fd; + + ret = parse_address(server_ip, atoi(port), &server_sin); + if (ret < 0) { + pr_err("parse server address"); + return -1; + } + + ring_config = get_ring_config(); + if (!ring_config) { + pr_err("Failed to get current ring configuration"); + return -1; + } + + if (configure_headersplit(ring_config, 1)) { + pr_err("Failed to enable TCP header split"); + goto err_free_ring_config; + } + + /* Configure RSS to divert all traffic from our devmem queues */ + if (configure_rss()) { + pr_err("Failed to configure rss"); + goto err_reset_headersplit; + } + + /* Flow steer our devmem flows to start_queue */ + if (configure_flow_steering(&server_sin)) { + pr_err("Failed to configure flow steering"); + goto err_reset_rss; + } + + if (bind_rx_queue(ifindex, mem->fd, create_queues(), num_queues, &ys)) { + pr_err("Failed to bind"); + goto err_reset_flow_steering; + } + + tmp_mem = malloc(mem->size); + if (!tmp_mem) + goto err_unbind; + + socket_fd = socket(AF_INET6, SOCK_STREAM, 0); + if (socket_fd < 0) { + pr_err("Failed to create socket"); + goto err_free_tmp; + } + + if (enable_reuseaddr(socket_fd)) + goto err_close_socket; + + fprintf(stderr, "binding to address %s:%d\n", server_ip, + ntohs(server_sin.sin6_port)); + + ret = bind(socket_fd, &server_sin, sizeof(server_sin)); + if (ret) { + pr_err("Failed to bind"); + goto err_close_socket; + } + + ret = listen(socket_fd, 1); + if (ret) { + pr_err("Failed to listen"); + goto err_close_socket; + } + + client_addr_len = sizeof(client_addr); + + inet_ntop(AF_INET6, &server_sin.sin6_addr, buffer, + sizeof(buffer)); + fprintf(stderr, "Waiting or connection on %s:%d\n", buffer, + ntohs(server_sin.sin6_port)); + client_fd = accept(socket_fd, &client_addr, &client_addr_len); + if (client_fd < 0) { + pr_err("Failed to accept"); + goto err_close_socket; + } + + inet_ntop(AF_INET6, &client_addr.sin6_addr, buffer, + sizeof(buffer)); + fprintf(stderr, "Got connection from %s:%d\n", buffer, + ntohs(client_addr.sin6_port)); + + while (1) { + struct iovec iov = { .iov_base = iobuf, + .iov_len = sizeof(iobuf) }; + struct dmabuf_cmsg *dmabuf_cmsg = NULL; + struct cmsghdr *cm = NULL; + struct msghdr msg = { 0 }; + struct dmabuf_token token; + ssize_t ret; + + is_devmem = false; + + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = ctrl_data; + msg.msg_controllen = sizeof(ctrl_data); + ret = recvmsg(client_fd, &msg, MSG_SOCK_DEVMEM); + fprintf(stderr, "recvmsg ret=%ld\n", ret); + if (ret < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)) + continue; + if (ret < 0) { + perror("recvmsg"); + if (errno == EFAULT) { + pr_err("received EFAULT, won't recover"); + goto err_close_client; + } + continue; + } + if (ret == 0) { + errno = 0; + pr_err("client exited"); + goto cleanup; + } + + for (cm = CMSG_FIRSTHDR(&msg); cm; cm = CMSG_NXTHDR(&msg, cm)) { + if (cm->cmsg_level != SOL_SOCKET || + (cm->cmsg_type != SCM_DEVMEM_DMABUF && + cm->cmsg_type != SCM_DEVMEM_LINEAR)) { + fprintf(stderr, "skipping non-devmem cmsg\n"); + continue; + } + + dmabuf_cmsg = (struct dmabuf_cmsg *)CMSG_DATA(cm); + is_devmem = true; + + if (cm->cmsg_type == SCM_DEVMEM_LINEAR) { + /* TODO: process data copied from skb's linear + * buffer. + */ + fprintf(stderr, + "SCM_DEVMEM_LINEAR. dmabuf_cmsg->frag_size=%u\n", + dmabuf_cmsg->frag_size); + + continue; + } + + token.token_start = dmabuf_cmsg->frag_token; + token.token_count = 1; + + total_received += dmabuf_cmsg->frag_size; + fprintf(stderr, + "received frag_page=%llu, in_page_offset=%llu, frag_offset=%llu, frag_size=%u, token=%u, total_received=%lu, dmabuf_id=%u\n", + dmabuf_cmsg->frag_offset >> PAGE_SHIFT, + dmabuf_cmsg->frag_offset % getpagesize(), + dmabuf_cmsg->frag_offset, + dmabuf_cmsg->frag_size, dmabuf_cmsg->frag_token, + total_received, dmabuf_cmsg->dmabuf_id); + + if (dmabuf_cmsg->dmabuf_id != dmabuf_id) { + pr_err("received on wrong dmabuf_id: flow steering error"); + goto err_close_client; + } + + if (dmabuf_cmsg->frag_size % getpagesize()) + non_page_aligned_frags++; + else + page_aligned_frags++; + + provider->memcpy_from_device(tmp_mem, mem, + dmabuf_cmsg->frag_offset, + dmabuf_cmsg->frag_size); + + if (do_validation) { + if (validate_buffer(tmp_mem, + dmabuf_cmsg->frag_size)) + goto err_close_client; + } else { + print_nonzero_bytes(tmp_mem, + dmabuf_cmsg->frag_size); + } + + ret = setsockopt(client_fd, SOL_SOCKET, + SO_DEVMEM_DONTNEED, &token, + sizeof(token)); + if (ret != 1) { + pr_err("SO_DEVMEM_DONTNEED not enough tokens"); + goto err_close_client; + } + } + if (!is_devmem) { + pr_err("flow steering error"); + goto err_close_client; + } + + fprintf(stderr, "total_received=%lu\n", total_received); + } + + fprintf(stderr, "%s: ok\n", TEST_PREFIX); + + fprintf(stderr, "page_aligned_frags=%lu, non_page_aligned_frags=%lu\n", + page_aligned_frags, non_page_aligned_frags); + +cleanup: + err = 0; + +err_close_client: + close(client_fd); +err_close_socket: + close(socket_fd); +err_free_tmp: + free(tmp_mem); +err_unbind: + ynl_sock_destroy(ys); +err_reset_flow_steering: + reset_flow_steering(); +err_reset_rss: + reset_rss(); +err_reset_headersplit: + restore_ring_config(ring_config); +err_free_ring_config: + ethtool_rings_get_rsp_free(ring_config); + return err; +} + +int run_devmem_tests(void) +{ + struct ethtool_rings_get_rsp *ring_config; + struct netdev_queue_id *queues; + struct memory_buffer *mem; + struct ynl_sock *ys; + int err = -1; + + mem = provider->alloc(getpagesize() * NUM_PAGES); + if (!mem) { + pr_err("Failed to allocate memory buffer"); + return -1; + } + + ring_config = get_ring_config(); + if (!ring_config) { + pr_err("Failed to get current ring configuration"); + goto err_free_mem; + } + + /* Configure RSS to divert all traffic from our devmem queues */ + if (configure_rss()) { + pr_err("rss error"); + goto err_free_ring_config; + } + + if (configure_headersplit(ring_config, 1)) { + pr_err("Failed to configure header split"); + goto err_reset_rss; + } + + queues = netdev_queue_id_alloc(num_queues); + if (!queues) { + pr_err("Failed to allocate empty queues array"); + goto err_reset_headersplit; + } + + if (!bind_rx_queue(ifindex, mem->fd, queues, num_queues, &ys)) { + pr_err("Binding empty queues array should have failed"); + goto err_unbind; + } + + if (configure_headersplit(ring_config, 0)) { + pr_err("Failed to configure header split"); + goto err_reset_headersplit; + } + + queues = create_queues(); + if (!queues) { + pr_err("Failed to create queues"); + goto err_reset_headersplit; + } + + if (!bind_rx_queue(ifindex, mem->fd, queues, num_queues, &ys)) { + pr_err("Configure dmabuf with header split off should have failed"); + goto err_unbind; + } + + if (configure_headersplit(ring_config, 1)) { + pr_err("Failed to configure header split"); + goto err_reset_headersplit; + } + + queues = create_queues(); + if (!queues) { + pr_err("Failed to create queues"); + goto err_reset_headersplit; + } + + if (bind_rx_queue(ifindex, mem->fd, queues, num_queues, &ys)) { + pr_err("Failed to bind"); + goto err_reset_headersplit; + } + + /* Deactivating a bound queue should not be legal */ + if (!check_changing_channels(num_queues, num_queues)) { + pr_err("Deactivating a bound queue should be illegal"); + goto err_unbind; + } + + err = 0; + goto err_unbind; + +err_unbind: + ynl_sock_destroy(ys); +err_reset_headersplit: + restore_ring_config(ring_config); +err_reset_rss: + reset_rss(); +err_free_ring_config: + ethtool_rings_get_rsp_free(ring_config); +err_free_mem: + provider->free(mem); + return err; +} + +static uint64_t gettimeofday_ms(void) +{ + struct timeval tv; + + gettimeofday(&tv, NULL); + return (tv.tv_sec * 1000ULL) + (tv.tv_usec / 1000ULL); +} + +static int do_poll(int fd) +{ + struct pollfd pfd; + int ret; + + pfd.revents = 0; + pfd.fd = fd; + + ret = poll(&pfd, 1, waittime_ms); + if (ret == -1) { + pr_err("poll"); + return -1; + } + + return ret && (pfd.revents & POLLERR); +} + +static int wait_compl(int fd) +{ + int64_t tstop = gettimeofday_ms() + waittime_ms; + char control[CMSG_SPACE(100)] = {}; + struct sock_extended_err *serr; + struct msghdr msg = {}; + struct cmsghdr *cm; + __u32 hi, lo; + int ret; + + msg.msg_control = control; + msg.msg_controllen = sizeof(control); + + while (gettimeofday_ms() < tstop) { + ret = do_poll(fd); + if (ret < 0) + return ret; + if (!ret) + continue; + + ret = recvmsg(fd, &msg, MSG_ERRQUEUE); + if (ret < 0) { + if (errno == EAGAIN) + continue; + pr_err("recvmsg(MSG_ERRQUEUE)"); + return -1; + } + if (msg.msg_flags & MSG_CTRUNC) { + pr_err("MSG_CTRUNC"); + return -1; + } + + for (cm = CMSG_FIRSTHDR(&msg); cm; cm = CMSG_NXTHDR(&msg, cm)) { + if (cm->cmsg_level != SOL_IP && + cm->cmsg_level != SOL_IPV6) + continue; + if (cm->cmsg_level == SOL_IP && + cm->cmsg_type != IP_RECVERR) + continue; + if (cm->cmsg_level == SOL_IPV6 && + cm->cmsg_type != IPV6_RECVERR) + continue; + + serr = (void *)CMSG_DATA(cm); + if (serr->ee_origin != SO_EE_ORIGIN_ZEROCOPY) { + pr_err("wrong origin %u", serr->ee_origin); + return -1; + } + if (serr->ee_errno != 0) { + pr_err("wrong errno %d", serr->ee_errno); + return -1; + } + + hi = serr->ee_data; + lo = serr->ee_info; + + fprintf(stderr, "tx complete [%d,%d]\n", lo, hi); + return 0; + } + } + + pr_err("did not receive tx completion"); + return -1; +} + +static int do_client(struct memory_buffer *mem) +{ + char ctrl_data[CMSG_SPACE(sizeof(__u32))]; + struct sockaddr_in6 server_sin; + struct sockaddr_in6 client_sin; + struct ynl_sock *ys = NULL; + struct iovec iov[MAX_IOV]; + struct msghdr msg = {}; + ssize_t line_size = 0; + struct cmsghdr *cmsg; + char *line = NULL; + int ret, err = -1; + size_t len = 0; + int socket_fd; + __u32 ddmabuf; + int opt = 1; + + ret = parse_address(server_ip, atoi(port), &server_sin); + if (ret < 0) { + pr_err("parse server address"); + return -1; + } + + if (client_ip) { + ret = parse_address(client_ip, atoi(port), &client_sin); + if (ret < 0) { + pr_err("parse client address"); + return ret; + } + } + + socket_fd = socket(AF_INET6, SOCK_STREAM, 0); + if (socket_fd < 0) { + pr_err("create socket"); + return -1; + } + + if (enable_reuseaddr(socket_fd)) + goto err_close_socket; + + ret = setsockopt(socket_fd, SOL_SOCKET, SO_BINDTODEVICE, ifname, + strlen(ifname) + 1); + if (ret) { + pr_err("bindtodevice"); + goto err_close_socket; + } + + if (bind_tx_queue(ifindex, mem->fd, &ys)) { + pr_err("Failed to bind"); + goto err_close_socket; + } + + if (client_ip) { + ret = bind(socket_fd, &client_sin, sizeof(client_sin)); + if (ret) { + pr_err("bind"); + goto err_unbind; + } + } + + ret = setsockopt(socket_fd, SOL_SOCKET, SO_ZEROCOPY, &opt, sizeof(opt)); + if (ret) { + pr_err("set sock opt"); + goto err_unbind; + } + + fprintf(stderr, "Connect to %s %d (via %s)\n", server_ip, + ntohs(server_sin.sin6_port), ifname); + + ret = connect(socket_fd, &server_sin, sizeof(server_sin)); + if (ret) { + pr_err("connect"); + goto err_unbind; + } + + while (1) { + free(line); + line = NULL; + line_size = getline(&line, &len, stdin); + + if (line_size < 0) + break; + + if (max_chunk) { + msg.msg_iovlen = + (line_size + max_chunk - 1) / max_chunk; + if (msg.msg_iovlen > MAX_IOV) { + pr_err("can't partition %zd bytes into maximum of %d chunks", + line_size, MAX_IOV); + goto err_free_line; + } + + for (int i = 0; i < msg.msg_iovlen; i++) { + iov[i].iov_base = (void *)(i * max_chunk); + iov[i].iov_len = max_chunk; + } + + iov[msg.msg_iovlen - 1].iov_len = + line_size - (msg.msg_iovlen - 1) * max_chunk; + } else { + iov[0].iov_base = 0; + iov[0].iov_len = line_size; + msg.msg_iovlen = 1; + } + + msg.msg_iov = iov; + provider->memcpy_to_device(mem, 0, line, line_size); + + msg.msg_control = ctrl_data; + msg.msg_controllen = sizeof(ctrl_data); + + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_DEVMEM_DMABUF; + cmsg->cmsg_len = CMSG_LEN(sizeof(__u32)); + + ddmabuf = tx_dmabuf_id; + + *((__u32 *)CMSG_DATA(cmsg)) = ddmabuf; + + ret = sendmsg(socket_fd, &msg, MSG_ZEROCOPY); + if (ret < 0) { + pr_err("Failed sendmsg"); + goto err_free_line; + } + + fprintf(stderr, "sendmsg_ret=%d\n", ret); + + if (ret != line_size) { + pr_err("Did not send all bytes %d vs %zd", ret, line_size); + goto err_free_line; + } + + if (wait_compl(socket_fd)) + goto err_free_line; + } + + fprintf(stderr, "%s: tx ok\n", TEST_PREFIX); + + err = 0; + +err_free_line: + free(line); +err_unbind: + ynl_sock_destroy(ys); +err_close_socket: + close(socket_fd); + return err; +} + +int main(int argc, char *argv[]) +{ + struct memory_buffer *mem; + int is_server = 0, opt; + int ret, err = 1; + + while ((opt = getopt(argc, argv, "ls:c:p:v:q:t:f:z:")) != -1) { + switch (opt) { + case 'l': + is_server = 1; + break; + case 's': + server_ip = optarg; + break; + case 'c': + client_ip = optarg; + break; + case 'p': + port = optarg; + break; + case 'v': + do_validation = atoll(optarg); + break; + case 'q': + num_queues = atoi(optarg); + break; + case 't': + start_queue = atoi(optarg); + break; + case 'f': + ifname = optarg; + break; + case 'z': + max_chunk = atoi(optarg); + break; + case '?': + fprintf(stderr, "unknown option: %c\n", optopt); + break; + } + } + + if (!ifname) { + pr_err("Missing -f argument"); + return 1; + } + + ifindex = if_nametoindex(ifname); + + fprintf(stderr, "using ifindex=%u\n", ifindex); + + if (!server_ip && !client_ip) { + if (start_queue < 0 && num_queues < 0) { + num_queues = rxq_num(ifindex); + if (num_queues < 0) { + pr_err("couldn't detect number of queues"); + return 1; + } + if (num_queues < 2) { + pr_err("number of device queues is too low"); + return 1; + } + /* make sure can bind to multiple queues */ + start_queue = num_queues / 2; + num_queues /= 2; + } + + if (start_queue < 0 || num_queues < 0) { + pr_err("Both -t and -q are required"); + return 1; + } + + return run_devmem_tests(); + } + + if (start_queue < 0 && num_queues < 0) { + num_queues = rxq_num(ifindex); + if (num_queues < 2) { + pr_err("number of device queues is too low"); + return 1; + } + + num_queues = 1; + start_queue = rxq_num(ifindex) - num_queues; + + if (start_queue < 0) { + pr_err("couldn't detect number of queues"); + return 1; + } + + fprintf(stderr, "using queues %d..%d\n", start_queue, start_queue + num_queues); + } + + for (; optind < argc; optind++) + fprintf(stderr, "extra arguments: %s\n", argv[optind]); + + if (start_queue < 0) { + pr_err("Missing -t argument"); + return 1; + } + + if (num_queues < 0) { + pr_err("Missing -q argument"); + return 1; + } + + if (!server_ip) { + pr_err("Missing -s argument"); + return 1; + } + + if (!port) { + pr_err("Missing -p argument"); + return 1; + } + + mem = provider->alloc(getpagesize() * NUM_PAGES); + if (!mem) { + pr_err("Failed to allocate memory buffer"); + return 1; + } + + ret = is_server ? do_server(mem) : do_client(mem); + if (ret) + goto err_free_mem; + + err = 0; + +err_free_mem: + provider->free(mem); + return err; +} diff --git a/tools/testing/selftests/drivers/net/hw/nic_timestamp.py b/tools/testing/selftests/drivers/net/hw/nic_timestamp.py new file mode 100755 index 000000000000..c1e943d53f19 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/nic_timestamp.py @@ -0,0 +1,113 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +""" +Tests related to configuration of HW timestamping +""" + +import errno +from lib.py import ksft_run, ksft_exit, ksft_ge, ksft_eq, KsftSkipEx +from lib.py import NetDrvEnv, EthtoolFamily, NlError + + +def __get_hwtimestamp_support(cfg): + """ Retrieve supported configuration information """ + + try: + tsinfo = cfg.ethnl.tsinfo_get({'header': {'dev-name': cfg.ifname}}) + except NlError as e: + if e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("timestamping configuration is not supported") from e + raise + + ctx = {} + tx = tsinfo.get('tx-types', {}) + rx = tsinfo.get('rx-filters', {}) + + bits = tx.get('bits', {}) + ctx['tx'] = bits.get('bit', []) + bits = rx.get('bits', {}) + ctx['rx'] = bits.get('bit', []) + return ctx + + +def __get_hwtimestamp_config(cfg): + """ Retrieve current TS configuration information """ + + try: + tscfg = cfg.ethnl.tsconfig_get({'header': {'dev-name': cfg.ifname}}) + except NlError as e: + if e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("timestamping configuration is not supported via netlink") from e + raise + return tscfg + + +def __set_hwtimestamp_config(cfg, ts): + """ Setup new TS configuration information """ + + ts['header'] = {'dev-name': cfg.ifname} + try: + res = cfg.ethnl.tsconfig_set(ts) + except NlError as e: + if e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("timestamping configuration is not supported via netlink") from e + raise + return res + + +def test_hwtstamp_tx(cfg): + """ + Test TX timestamp configuration. + The driver should apply provided config and report back proper state. + """ + + orig_tscfg = __get_hwtimestamp_config(cfg) + ts = __get_hwtimestamp_support(cfg) + tx = ts['tx'] + for t in tx: + tscfg = orig_tscfg + tscfg['tx-types']['bits']['bit'] = [t] + res = __set_hwtimestamp_config(cfg, tscfg) + if res is None: + res = __get_hwtimestamp_config(cfg) + ksft_eq(res['tx-types']['bits']['bit'], [t]) + __set_hwtimestamp_config(cfg, orig_tscfg) + + +def test_hwtstamp_rx(cfg): + """ + Test RX timestamp configuration. + The filter configuration is taken from the list of supported filters. + The driver should apply the config without error and report back proper state. + Some extension of the timestamping scope is allowed for PTP filters. + """ + + orig_tscfg = __get_hwtimestamp_config(cfg) + ts = __get_hwtimestamp_support(cfg) + rx = ts['rx'] + for r in rx: + tscfg = orig_tscfg + tscfg['rx-filters']['bits']['bit'] = [r] + res = __set_hwtimestamp_config(cfg, tscfg) + if res is None: + res = __get_hwtimestamp_config(cfg) + if r['index'] == 0 or r['index'] == 1: + ksft_eq(res['rx-filters']['bits']['bit'][0]['index'], r['index']) + else: + # the driver can fallback to some value which has higher coverage for timestamping + ksft_ge(res['rx-filters']['bits']['bit'][0]['index'], r['index']) + __set_hwtimestamp_config(cfg, orig_tscfg) + + +def main() -> None: + """ Ksft boiler plate main """ + + with NetDrvEnv(__file__, nsim_test=False) as cfg: + cfg.ethnl = EthtoolFamily() + ksft_run([test_hwtstamp_tx, test_hwtstamp_rx], args=(cfg,)) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py b/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py index 026d98976c35..2a51b60df8a1 100755 --- a/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py +++ b/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py @@ -1,7 +1,13 @@ #!/usr/bin/env python3 # SPDX-License-Identifier: GPL-2.0 +""" +Test driver resilience vs page pool allocation failures. +""" + +import errno import time +import math import os from lib.py import ksft_run, ksft_exit, ksft_pr from lib.py import KsftSkipEx, KsftFailEx @@ -12,7 +18,8 @@ from lib.py import cmd, tool, GenerateTraffic def _write_fail_config(config): for key, value in config.items(): - with open("/sys/kernel/debug/fail_function/" + key, "w") as fp: + path = "/sys/kernel/debug/fail_function/" + with open(path + key, "w", encoding='ascii') as fp: fp.write(str(value) + "\n") @@ -20,9 +27,8 @@ def _enable_pp_allocation_fail(): if not os.path.exists("/sys/kernel/debug/fail_function"): raise KsftSkipEx("Kernel built without function error injection (or DebugFS)") - if not os.path.exists("/sys/kernel/debug/fail_function/page_pool_alloc_pages"): - with open("/sys/kernel/debug/fail_function/inject", "w") as fp: - fp.write("page_pool_alloc_pages\n") + if not os.path.exists("/sys/kernel/debug/fail_function/page_pool_alloc_netmems"): + _write_fail_config({"inject": "page_pool_alloc_netmems"}) _write_fail_config({ "verbose": 0, @@ -36,9 +42,8 @@ def _disable_pp_allocation_fail(): if not os.path.exists("/sys/kernel/debug/fail_function"): return - if os.path.exists("/sys/kernel/debug/fail_function/page_pool_alloc_pages"): - with open("/sys/kernel/debug/fail_function/inject", "w") as fp: - fp.write("\n") + if os.path.exists("/sys/kernel/debug/fail_function/page_pool_alloc_netmems"): + _write_fail_config({"inject": ""}) _write_fail_config({ "probability": 0, @@ -47,6 +52,10 @@ def _disable_pp_allocation_fail(): def test_pp_alloc(cfg, netdevnl): + """ + Configure page pool allocation fail injection while traffic is running. + """ + def get_stats(): return netdevnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] @@ -54,14 +63,14 @@ def test_pp_alloc(cfg, netdevnl): stat1 = get_stats() time.sleep(1) stat2 = get_stats() - if stat2['rx-packets'] - stat1['rx-packets'] < 15000: + if stat2['rx-packets'] - stat1['rx-packets'] < 4000: raise KsftFailEx("Traffic seems low:", stat2['rx-packets'] - stat1['rx-packets']) try: stats = get_stats() except NlError as e: - if e.nl_msg.error == -95: + if e.nl_msg.error == -errno.EOPNOTSUPP: stats = {} else: raise @@ -81,11 +90,16 @@ def test_pp_alloc(cfg, netdevnl): time.sleep(3) s2 = get_stats() - if s2['rx-alloc-fail'] - s1['rx-alloc-fail'] < 1: + seen_fails = s2['rx-alloc-fail'] - s1['rx-alloc-fail'] + if seen_fails < 1: raise KsftSkipEx("Allocation failures not increasing") - if s2['rx-alloc-fail'] - s1['rx-alloc-fail'] < 100: - raise KsftSkipEx("Allocation increasing too slowly", s2['rx-alloc-fail'] - s1['rx-alloc-fail'], - "packets:", s2['rx-packets'] - s1['rx-packets']) + pkts = s2['rx-packets'] - s1['rx-packets'] + # Expecting one failure per 512 buffers, 3.1x safety margin + want_fails = math.floor(pkts / 512 / 3.1) + if seen_fails < want_fails: + raise KsftSkipEx("Allocation increasing too slowly", seen_fails, + "packets:", pkts) + ksft_pr(f"Seen: pkts:{pkts} fails:{seen_fails} (pass thrs:{want_fails})") # Basic failures are fine, try to wobble some settings to catch extra failures check_traffic_flowing() @@ -104,7 +118,7 @@ def test_pp_alloc(cfg, netdevnl): else: ksft_pr("ethtool -G change retval: did not succeed", new_g) else: - ksft_pr("ethtool -G change retval: did not try") + ksft_pr("ethtool -G change retval: did not try") time.sleep(0.1) check_traffic_flowing() @@ -118,6 +132,7 @@ def test_pp_alloc(cfg, netdevnl): def main() -> None: + """ Ksft boiler plate main """ netdevnl = NetdevFamily() with NetDrvEpEnv(__file__, nsim_test=False) as cfg: diff --git a/tools/testing/selftests/drivers/net/hw/rss_api.py b/tools/testing/selftests/drivers/net/hw/rss_api.py new file mode 100755 index 000000000000..19847f3d4a00 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/rss_api.py @@ -0,0 +1,476 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +""" +API level tests for RSS (mostly Netlink vs IOCTL). +""" + +import errno +import glob +import random +from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_is, ksft_ne, ksft_raises +from lib.py import KsftSkipEx, KsftFailEx +from lib.py import defer, ethtool, CmdExitFailure +from lib.py import EthtoolFamily, NlError +from lib.py import NetDrvEnv + + +def _require_2qs(cfg): + qcnt = len(glob.glob(f"/sys/class/net/{cfg.ifname}/queues/rx-*")) + if qcnt < 2: + raise KsftSkipEx(f"Local has only {qcnt} queues") + return qcnt + + +def _ethtool_create(cfg, act, opts): + output = ethtool(f"{act} {cfg.ifname} {opts}").stdout + # Output will be something like: "New RSS context is 1" or + # "Added rule with ID 7", we want the integer from the end + return int(output.split()[-1]) + + +def _ethtool_get_cfg(cfg, fl_type, to_nl=False): + descr = ethtool(f"-n {cfg.ifname} rx-flow-hash {fl_type}").stdout + + if to_nl: + converter = { + "IP SA": "ip-src", + "IP DA": "ip-dst", + "L4 bytes 0 & 1 [TCP/UDP src port]": "l4-b-0-1", + "L4 bytes 2 & 3 [TCP/UDP dst port]": "l4-b-2-3", + } + + ret = set() + else: + converter = { + "IP SA": "s", + "IP DA": "d", + "L3 proto": "t", + "L4 bytes 0 & 1 [TCP/UDP src port]": "f", + "L4 bytes 2 & 3 [TCP/UDP dst port]": "n", + } + + ret = "" + + for line in descr.split("\n")[1:-2]: + # if this raises we probably need to add more keys to converter above + if to_nl: + ret.add(converter[line]) + else: + ret += converter[line] + return ret + + +def test_rxfh_nl_set_fail(cfg): + """ + Test error path of Netlink SET. + """ + _require_2qs(cfg) + + ethnl = EthtoolFamily() + ethnl.ntf_subscribe("monitor") + + with ksft_raises(NlError): + ethnl.rss_set({"header": {"dev-name": "lo"}, + "indir": None}) + + with ksft_raises(NlError): + ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, + "indir": [100000]}) + ntf = next(ethnl.poll_ntf(duration=0.2), None) + ksft_is(ntf, None) + + +def test_rxfh_nl_set_indir(cfg): + """ + Test setting indirection table via Netlink. + """ + qcnt = _require_2qs(cfg) + + # Test some SETs with a value + reset = defer(cfg.ethnl.rss_set, + {"header": {"dev-index": cfg.ifindex}, "indir": None}) + cfg.ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, + "indir": [1]}) + rss = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + ksft_eq(set(rss.get("indir", [-1])), {1}) + + cfg.ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, + "indir": [0, 1]}) + rss = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + ksft_eq(set(rss.get("indir", [-1])), {0, 1}) + + # Make sure we can't set the queue count below max queue used + with ksft_raises(CmdExitFailure): + ethtool(f"-L {cfg.ifname} combined 0 rx 1") + with ksft_raises(CmdExitFailure): + ethtool(f"-L {cfg.ifname} combined 1 rx 0") + + # Test reset back to default + reset.exec() + rss = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + ksft_eq(set(rss.get("indir", [-1])), set(range(qcnt))) + + +def test_rxfh_nl_set_indir_ctx(cfg): + """ + Test setting indirection table for a custom context via Netlink. + """ + _require_2qs(cfg) + + # Get setting for ctx 0, we'll make sure they don't get clobbered + dflt = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + + # Create context + ctx_id = _ethtool_create(cfg, "-X", "context new") + defer(ethtool, f"-X {cfg.ifname} context {ctx_id} delete") + + cfg.ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, + "context": ctx_id, "indir": [1]}) + rss = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}, + "context": ctx_id}) + ksft_eq(set(rss.get("indir", [-1])), {1}) + + ctx0 = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + ksft_eq(ctx0, dflt) + + cfg.ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, + "context": ctx_id, "indir": [0, 1]}) + rss = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}, + "context": ctx_id}) + ksft_eq(set(rss.get("indir", [-1])), {0, 1}) + + ctx0 = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + ksft_eq(ctx0, dflt) + + # Make sure we can't set the queue count below max queue used + with ksft_raises(CmdExitFailure): + ethtool(f"-L {cfg.ifname} combined 0 rx 1") + with ksft_raises(CmdExitFailure): + ethtool(f"-L {cfg.ifname} combined 1 rx 0") + + +def test_rxfh_indir_ntf(cfg): + """ + Check that Netlink notifications are generated when RSS indirection + table was modified. + """ + _require_2qs(cfg) + + ethnl = EthtoolFamily() + ethnl.ntf_subscribe("monitor") + + ethtool(f"--disable-netlink -X {cfg.ifname} weight 0 1") + reset = defer(ethtool, f"-X {cfg.ifname} default") + + ntf = next(ethnl.poll_ntf(duration=0.2), None) + if ntf is None: + raise KsftFailEx("No notification received") + ksft_eq(ntf["name"], "rss-ntf") + ksft_eq(set(ntf["msg"]["indir"]), {1}) + + reset.exec() + ntf = next(ethnl.poll_ntf(duration=0.2), None) + if ntf is None: + raise KsftFailEx("No notification received after reset") + ksft_eq(ntf["name"], "rss-ntf") + ksft_is(ntf["msg"].get("context"), None) + ksft_ne(set(ntf["msg"]["indir"]), {1}) + + +def test_rxfh_indir_ctx_ntf(cfg): + """ + Check that Netlink notifications are generated when RSS indirection + table was modified on an additional RSS context. + """ + _require_2qs(cfg) + + ctx_id = _ethtool_create(cfg, "-X", "context new") + defer(ethtool, f"-X {cfg.ifname} context {ctx_id} delete") + + ethnl = EthtoolFamily() + ethnl.ntf_subscribe("monitor") + + ethtool(f"--disable-netlink -X {cfg.ifname} context {ctx_id} weight 0 1") + + ntf = next(ethnl.poll_ntf(duration=0.2), None) + if ntf is None: + raise KsftFailEx("No notification received") + ksft_eq(ntf["name"], "rss-ntf") + ksft_eq(ntf["msg"].get("context"), ctx_id) + ksft_eq(set(ntf["msg"]["indir"]), {1}) + + +def test_rxfh_nl_set_key(cfg): + """ + Test setting hashing key via Netlink. + """ + + dflt = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + defer(cfg.ethnl.rss_set, + {"header": {"dev-index": cfg.ifindex}, + "hkey": dflt["hkey"], "indir": None}) + + # Empty key should error out + with ksft_raises(NlError) as cm: + cfg.ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, + "hkey": None}) + ksft_eq(cm.exception.nl_msg.extack['bad-attr'], '.hkey') + + # Set key to random + mod = random.randbytes(len(dflt["hkey"])) + cfg.ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, + "hkey": mod}) + rss = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + ksft_eq(rss.get("hkey", [-1]), mod) + + # Set key to random and indir tbl to something at once + mod = random.randbytes(len(dflt["hkey"])) + cfg.ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, + "indir": [0, 1], "hkey": mod}) + rss = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + ksft_eq(rss.get("hkey", [-1]), mod) + ksft_eq(set(rss.get("indir", [-1])), {0, 1}) + + +def test_rxfh_fields(cfg): + """ + Test reading Rx Flow Hash over Netlink. + """ + + flow_types = ["tcp4", "tcp6", "udp4", "udp6"] + ethnl = EthtoolFamily() + + cfg_nl = ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + for fl_type in flow_types: + one = _ethtool_get_cfg(cfg, fl_type, to_nl=True) + ksft_eq(one, cfg_nl["flow-hash"][fl_type], + comment="Config for " + fl_type) + + +def test_rxfh_fields_set(cfg): + """ Test configuring Rx Flow Hash over Netlink. """ + + flow_types = ["tcp4", "tcp6", "udp4", "udp6"] + + # Collect current settings + cfg_old = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + # symmetric hashing is config-order-sensitive make sure we leave + # symmetric mode, or make the flow-hash sym-compatible first + changes = [{"flow-hash": cfg_old["flow-hash"],}, + {"input-xfrm": cfg_old.get("input-xfrm", {}),}] + if cfg_old.get("input-xfrm"): + changes = list(reversed(changes)) + for old in changes: + defer(cfg.ethnl.rss_set, {"header": {"dev-index": cfg.ifindex},} | old) + + # symmetric hashing prevents some of the configs below + if cfg_old.get("input-xfrm"): + cfg.ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, + "input-xfrm": {}}) + + for fl_type in flow_types: + cur = _ethtool_get_cfg(cfg, fl_type) + if cur == "sdfn": + change_nl = {"ip-src", "ip-dst"} + change_ic = "sd" + else: + change_nl = {"l4-b-0-1", "l4-b-2-3", "ip-src", "ip-dst"} + change_ic = "sdfn" + + cfg.ethnl.rss_set({ + "header": {"dev-index": cfg.ifindex}, + "flow-hash": {fl_type: change_nl} + }) + reset = defer(ethtool, f"--disable-netlink -N {cfg.ifname} " + f"rx-flow-hash {fl_type} {cur}") + + cfg_nl = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + ksft_eq(change_nl, cfg_nl["flow-hash"][fl_type], + comment=f"Config for {fl_type} over Netlink") + cfg_ic = _ethtool_get_cfg(cfg, fl_type) + ksft_eq(change_ic, cfg_ic, + comment=f"Config for {fl_type} over IOCTL") + + reset.exec() + cfg_nl = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + ksft_eq(cfg_old["flow-hash"][fl_type], cfg_nl["flow-hash"][fl_type], + comment=f"Un-config for {fl_type} over Netlink") + cfg_ic = _ethtool_get_cfg(cfg, fl_type) + ksft_eq(cur, cfg_ic, comment=f"Un-config for {fl_type} over IOCTL") + + # Try to set multiple at once, the defer was already installed at the start + change = {"ip-src"} + if change == cfg_old["flow-hash"]["tcp4"]: + change = {"ip-dst"} + cfg.ethnl.rss_set({ + "header": {"dev-index": cfg.ifindex}, + "flow-hash": {x: change for x in flow_types} + }) + + cfg_nl = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + for fl_type in flow_types: + ksft_eq(change, cfg_nl["flow-hash"][fl_type], + comment=f"multi-config for {fl_type} over Netlink") + + +def test_rxfh_fields_set_xfrm(cfg): + """ Test changing Rx Flow Hash vs xfrm_input at once. """ + + def set_rss(cfg, xfrm, fh): + cfg.ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, + "input-xfrm": xfrm, "flow-hash": fh}) + + # Install the reset handler + cfg_old = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + # symmetric hashing is config-order-sensitive make sure we leave + # symmetric mode, or make the flow-hash sym-compatible first + changes = [{"flow-hash": cfg_old["flow-hash"],}, + {"input-xfrm": cfg_old.get("input-xfrm", {}),}] + if cfg_old.get("input-xfrm"): + changes = list(reversed(changes)) + for old in changes: + defer(cfg.ethnl.rss_set, {"header": {"dev-index": cfg.ifindex},} | old) + + # Make sure we start with input-xfrm off, and tcp4 config non-sym + set_rss(cfg, {}, {}) + set_rss(cfg, {}, {"tcp4": {"ip-src"}}) + + # Setting sym and fixing tcp4 config not expected to pass right now + with ksft_raises(NlError): + set_rss(cfg, {"sym-xor"}, {"tcp4": {"ip-src", "ip-dst"}}) + # One at a time should work, hopefully + set_rss(cfg, 0, {"tcp4": {"ip-src", "ip-dst"}}) + no_support = False + try: + set_rss(cfg, {"sym-xor"}, {}) + except NlError: + try: + set_rss(cfg, {"sym-or-xor"}, {}) + except NlError: + no_support = True + if no_support: + raise KsftSkipEx("no input-xfrm supported") + # Disabling two at once should not work either without kernel changes + with ksft_raises(NlError): + set_rss(cfg, {}, {"tcp4": {"ip-src"}}) + + +def test_rxfh_fields_ntf(cfg): + """ Test Rx Flow Hash notifications. """ + + cur = _ethtool_get_cfg(cfg, "tcp4") + if cur == "sdfn": + change = {"ip-src", "ip-dst"} + else: + change = {"l4-b-0-1", "l4-b-2-3", "ip-src", "ip-dst"} + + ethnl = EthtoolFamily() + ethnl.ntf_subscribe("monitor") + + ethnl.rss_set({ + "header": {"dev-index": cfg.ifindex}, + "flow-hash": {"tcp4": change} + }) + reset = defer(ethtool, + f"--disable-netlink -N {cfg.ifname} rx-flow-hash tcp4 {cur}") + + ntf = next(ethnl.poll_ntf(duration=0.2), None) + if ntf is None: + raise KsftFailEx("No notification received after IOCTL change") + ksft_eq(ntf["name"], "rss-ntf") + ksft_eq(ntf["msg"]["flow-hash"]["tcp4"], change) + ksft_eq(next(ethnl.poll_ntf(duration=0.01), None), None) + + reset.exec() + ntf = next(ethnl.poll_ntf(duration=0.2), None) + if ntf is None: + raise KsftFailEx("No notification received after Netlink change") + ksft_eq(ntf["name"], "rss-ntf") + ksft_ne(ntf["msg"]["flow-hash"]["tcp4"], change) + ksft_eq(next(ethnl.poll_ntf(duration=0.01), None), None) + + +def test_rss_ctx_add(cfg): + """ Test creating an additional RSS context via Netlink """ + + _require_2qs(cfg) + + # Test basic creation + ctx = cfg.ethnl.rss_create_act({"header": {"dev-index": cfg.ifindex}}) + d = defer(ethtool, f"-X {cfg.ifname} context {ctx.get('context')} delete") + ksft_ne(ctx.get("context", 0), 0) + ksft_ne(set(ctx.get("indir", [0])), {0}, + comment="Driver should init the indirection table") + + # Try requesting the ID we just got allocated + with ksft_raises(NlError) as cm: + ctx = cfg.ethnl.rss_create_act({ + "header": {"dev-index": cfg.ifindex}, + "context": ctx.get("context"), + }) + ethtool(f"-X {cfg.ifname} context {ctx.get('context')} delete") + d.exec() + ksft_eq(cm.exception.nl_msg.error, -errno.EBUSY) + + # Test creating with a specified RSS table, and context ID + ctx_id = ctx.get("context") + ctx = cfg.ethnl.rss_create_act({ + "header": {"dev-index": cfg.ifindex}, + "context": ctx_id, + "indir": [1], + }) + ethtool(f"-X {cfg.ifname} context {ctx.get('context')} delete") + ksft_eq(ctx.get("context"), ctx_id) + ksft_eq(set(ctx.get("indir", [0])), {1}) + + +def test_rss_ctx_ntf(cfg): + """ Test notifications for creating additional RSS contexts """ + + ethnl = EthtoolFamily() + ethnl.ntf_subscribe("monitor") + + # Create / delete via Netlink + ctx = cfg.ethnl.rss_create_act({"header": {"dev-index": cfg.ifindex}}) + cfg.ethnl.rss_delete_act({ + "header": {"dev-index": cfg.ifindex}, + "context": ctx["context"], + }) + + ntf = next(ethnl.poll_ntf(duration=0.2), None) + if ntf is None: + raise KsftFailEx("[NL] No notification after context creation") + ksft_eq(ntf["name"], "rss-create-ntf") + ksft_eq(ctx, ntf["msg"]) + + ntf = next(ethnl.poll_ntf(duration=0.2), None) + if ntf is None: + raise KsftFailEx("[NL] No notification after context deletion") + ksft_eq(ntf["name"], "rss-delete-ntf") + + # Create / deleve via IOCTL + ctx_id = _ethtool_create(cfg, "--disable-netlink -X", "context new") + ethtool(f"--disable-netlink -X {cfg.ifname} context {ctx_id} delete") + ntf = next(ethnl.poll_ntf(duration=0.2), None) + if ntf is None: + raise KsftFailEx("[IOCTL] No notification after context creation") + ksft_eq(ntf["name"], "rss-create-ntf") + + ntf = next(ethnl.poll_ntf(duration=0.2), None) + if ntf is None: + raise KsftFailEx("[IOCTL] No notification after context deletion") + ksft_eq(ntf["name"], "rss-delete-ntf") + + +def main() -> None: + """ Ksft boiler plate main """ + + with NetDrvEnv(__file__, nsim_test=False) as cfg: + cfg.ethnl = EthtoolFamily() + ksft_run(globs=globals(), case_pfx={"test_"}, args=(cfg, )) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hw/rss_ctx.py b/tools/testing/selftests/drivers/net/hw/rss_ctx.py index 931dbc36ca43..ed7e405682f0 100755 --- a/tools/testing/selftests/drivers/net/hw/rss_ctx.py +++ b/tools/testing/selftests/drivers/net/hw/rss_ctx.py @@ -3,10 +3,12 @@ import datetime import random -from lib.py import ksft_run, ksft_pr, ksft_exit, ksft_eq, ksft_ge, ksft_lt +import re +from lib.py import ksft_run, ksft_pr, ksft_exit +from lib.py import ksft_eq, ksft_ne, ksft_ge, ksft_in, ksft_lt, ksft_true, ksft_raises from lib.py import NetDrvEpEnv from lib.py import EthtoolFamily, NetdevFamily -from lib.py import KsftSkipEx +from lib.py import KsftSkipEx, KsftFailEx from lib.py import rand_port from lib.py import ethtool, ip, defer, GenerateTraffic, CmdExitFailure @@ -19,6 +21,15 @@ def _rss_key_rand(length): return [random.randint(0, 255) for _ in range(length)] +def _rss_key_check(cfg, data=None, context=0): + if data is None: + data = get_rss(cfg, context=context) + if 'rss-hash-key' not in data: + return + non_zero = [x for x in data['rss-hash-key'] if x != 0] + ksft_eq(bool(non_zero), True, comment=f"RSS key is all zero {data['rss-hash-key']}") + + def get_rss(cfg, context=0): return ethtool(f"-x {cfg.ifname} context {context}", json=True)[0] @@ -48,6 +59,14 @@ def require_ntuple(cfg): raise KsftSkipEx("Ntuple filters not enabled on the device: " + str(features["ntuple-filters"])) +def require_context_cnt(cfg, need_cnt): + # There's no good API to get the context count, so the tests + # which try to add a lot opportunisitically set the count they + # discovered. Careful with test ordering! + if need_cnt and cfg.context_cnt and cfg.context_cnt < need_cnt: + raise KsftSkipEx(f"Test requires at least {need_cnt} contexts, but device only has {cfg.context_cnt}") + + # Get Rx packet counts for all queues, as a simple list of integers # if @prev is specified the prev counts will be subtracted def _get_rx_cnts(cfg, prev=None): @@ -81,17 +100,25 @@ def _send_traffic_check(cfg, port, name, params): ksft_ge(directed, 20000, f"traffic on {name}: " + str(cnts)) if params.get('noise'): ksft_lt(sum(cnts[i] for i in params['noise']), directed / 2, - "traffic on other queues:" + str(cnts)) + f"traffic on other queues ({name})':" + str(cnts)) if params.get('empty'): ksft_eq(sum(cnts[i] for i in params['empty']), 0, - "traffic on inactive queues: " + str(cnts)) + f"traffic on inactive queues ({name}): " + str(cnts)) + + +def _ntuple_rule_check(cfg, rule_id, ctx_id): + """Check that ntuple rule references RSS context ID""" + text = ethtool(f"-n {cfg.ifname} rule {rule_id}").stdout + pattern = f"RSS Context (ID: )?{ctx_id}" + ksft_true(re.search(pattern, text), "RSS context not referenced in ntuple rule") def test_rss_key_indir(cfg): """Test basics like updating the main RSS key and indirection table.""" - if len(_get_rx_cnts(cfg)) < 2: - KsftSkipEx("Device has only one queue (or doesn't support queue stats)") + qcnt = len(_get_rx_cnts(cfg)) + if qcnt < 3: + raise KsftSkipEx("Device has fewer than 3 queues (or doesn't support queue stats)") data = get_rss(cfg) want_keys = ['rss-hash-key', 'rss-hash-function', 'rss-indirection-table'] @@ -101,6 +128,7 @@ def test_rss_key_indir(cfg): if not data[k]: raise KsftFailEx(f"ethtool results empty for '{k}': {data[k]}") + _rss_key_check(cfg, data=data) key_len = len(data['rss-hash-key']) # Set the key @@ -110,9 +138,26 @@ def test_rss_key_indir(cfg): data = get_rss(cfg) ksft_eq(key, data['rss-hash-key']) + # Set the indirection table and the key together + key = _rss_key_rand(key_len) + ethtool(f"-X {cfg.ifname} equal 3 hkey " + _rss_key_str(key)) + reset_indir = defer(ethtool, f"-X {cfg.ifname} default") + + data = get_rss(cfg) + _rss_key_check(cfg, data=data) + ksft_eq(0, min(data['rss-indirection-table'])) + ksft_eq(2, max(data['rss-indirection-table'])) + + # Reset indirection table and set the key + key = _rss_key_rand(key_len) + ethtool(f"-X {cfg.ifname} default hkey " + _rss_key_str(key)) + data = get_rss(cfg) + _rss_key_check(cfg, data=data) + ksft_eq(0, min(data['rss-indirection-table'])) + ksft_eq(qcnt - 1, max(data['rss-indirection-table'])) + # Set the indirection table ethtool(f"-X {cfg.ifname} equal 2") - reset_indir = defer(ethtool, f"-X {cfg.ifname} default") data = get_rss(cfg) ksft_eq(0, min(data['rss-indirection-table'])) ksft_eq(1, max(data['rss-indirection-table'])) @@ -133,8 +178,13 @@ def test_rss_key_indir(cfg): cnts = _get_rx_cnts(cfg) GenerateTraffic(cfg).wait_pkts_and_stop(20000) cnts = _get_rx_cnts(cfg, prev=cnts) - # First two queues get less traffic than all the rest - ksft_lt(sum(cnts[:2]), sum(cnts[2:]), "traffic distributed: " + str(cnts)) + if qcnt > 4: + # First two queues get less traffic than all the rest + ksft_lt(sum(cnts[:2]), sum(cnts[2:]), + "traffic distributed: " + str(cnts)) + else: + # When queue count is low make sure third queue got significant pkts + ksft_ge(cnts[2], 3500, "traffic distributed: " + str(cnts)) def test_rss_queue_reconfigure(cfg, main_ctx=True): @@ -187,7 +237,7 @@ def test_rss_queue_reconfigure(cfg, main_ctx=True): defer(ethtool, f"-X {cfg.ifname} default") else: other_key = 'noise' - flow = f"flow-type tcp{cfg.addr_ipver} dst-port {port} context {ctx_id}" + flow = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} dst-port {port} context {ctx_id}" ntuple = ethtool_create(cfg, "-N", flow) defer(ethtool, f"-N {cfg.ifname} delete {ntuple}") @@ -210,6 +260,39 @@ def test_rss_queue_reconfigure(cfg, main_ctx=True): else: raise Exception(f"Driver didn't prevent us from deactivating a used queue (context {ctx_id})") + if not main_ctx: + ethtool(f"-L {cfg.ifname} combined 4") + flow = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} dst-port {port} context {ctx_id} action 1" + try: + # this targets queue 4, which doesn't exist + ntuple2 = ethtool_create(cfg, "-N", flow) + defer(ethtool, f"-N {cfg.ifname} delete {ntuple2}") + except CmdExitFailure: + pass + else: + raise Exception(f"Driver didn't prevent us from targeting a nonexistent queue (context {ctx_id})") + # change the table to target queues 0 and 2 + ethtool(f"-X {cfg.ifname} {ctx_ref} weight 1 0 1 0") + # ntuple rule therefore targets queues 1 and 3 + try: + ntuple2 = ethtool_create(cfg, "-N", flow) + except CmdExitFailure: + ksft_pr("Driver does not support rss + queue offset") + return + + defer(ethtool, f"-N {cfg.ifname} delete {ntuple2}") + # should replace existing filter + ksft_eq(ntuple, ntuple2) + _send_traffic_check(cfg, port, ctx_ref, { 'target': (1, 3), + 'noise' : (0, 2) }) + # Setting queue count to 3 should fail, queue 3 is used + try: + ethtool(f"-L {cfg.ifname} combined 3") + except CmdExitFailure: + pass + else: + raise Exception(f"Driver didn't prevent us from deactivating a used queue (context {ctx_id})") + def test_rss_resize(cfg): """Test resizing of the RSS table. @@ -257,23 +340,96 @@ def test_hitless_key_update(cfg): data = get_rss(cfg) key_len = len(data['rss-hash-key']) - key = _rss_key_rand(key_len) + ethnl = EthtoolFamily() + key = random.randbytes(key_len) tgen = GenerateTraffic(cfg) try: errors0, carrier0 = get_drop_err_sum(cfg) t0 = datetime.datetime.now() - ethtool(f"-X {cfg.ifname} hkey " + _rss_key_str(key)) + ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, "hkey": key}) t1 = datetime.datetime.now() errors1, carrier1 = get_drop_err_sum(cfg) finally: tgen.wait_pkts_and_stop(5000) - ksft_lt((t1 - t0).total_seconds(), 0.2) + ksft_lt((t1 - t0).total_seconds(), 0.15) ksft_eq(errors1 - errors1, 0) ksft_eq(carrier1 - carrier0, 0) +def test_rss_context_dump(cfg): + """ + Test dumping RSS contexts. This tests mostly exercises the kernel APIs. + """ + + # Get a random key of the right size + data = get_rss(cfg) + if 'rss-hash-key' in data: + key_data = _rss_key_rand(len(data['rss-hash-key'])) + key = _rss_key_str(key_data) + else: + key_data = [] + key = "ba:ad" + + ids = [] + try: + ids.append(ethtool_create(cfg, "-X", f"context new")) + defer(ethtool, f"-X {cfg.ifname} context {ids[-1]} delete") + + ids.append(ethtool_create(cfg, "-X", f"context new weight 1 1")) + defer(ethtool, f"-X {cfg.ifname} context {ids[-1]} delete") + + ids.append(ethtool_create(cfg, "-X", f"context new hkey {key}")) + defer(ethtool, f"-X {cfg.ifname} context {ids[-1]} delete") + except CmdExitFailure: + if not ids: + raise KsftSkipEx("Unable to add any contexts") + ksft_pr(f"Added only {len(ids)} out of 3 contexts") + + expect_tuples = set([(cfg.ifname, -1)] + [(cfg.ifname, ctx_id) for ctx_id in ids]) + + # Dump all + ctxs = cfg.ethnl.rss_get({}, dump=True) + tuples = [(c['header']['dev-name'], c.get('context', -1)) for c in ctxs] + ksft_eq(len(tuples), len(set(tuples)), "duplicates in context dump") + ctx_tuples = set([ctx for ctx in tuples if ctx[0] == cfg.ifname]) + ksft_eq(expect_tuples, ctx_tuples) + + # Sanity-check the results + for data in ctxs: + ksft_ne(set(data.get('indir', [1])), {0}, "indir table is all zero") + ksft_ne(set(data.get('hkey', [1])), {0}, "key is all zero") + + # More specific checks + if len(ids) > 1 and data.get('context') == ids[1]: + ksft_eq(set(data['indir']), {0, 1}, + "ctx1 - indir table mismatch") + if len(ids) > 2 and data.get('context') == ids[2]: + ksft_eq(data['hkey'], bytes(key_data), "ctx2 - key mismatch") + + # Ifindex filter + ctxs = cfg.ethnl.rss_get({'header': {'dev-name': cfg.ifname}}, dump=True) + tuples = [(c['header']['dev-name'], c.get('context', -1)) for c in ctxs] + ctx_tuples = set(tuples) + ksft_eq(len(tuples), len(ctx_tuples), "duplicates in context dump") + ksft_eq(expect_tuples, ctx_tuples) + + # Skip ctx 0 + expect_tuples.remove((cfg.ifname, -1)) + + ctxs = cfg.ethnl.rss_get({'start-context': 1}, dump=True) + tuples = [(c['header']['dev-name'], c.get('context', -1)) for c in ctxs] + ksft_eq(len(tuples), len(set(tuples)), "duplicates in context dump") + ctx_tuples = set([ctx for ctx in tuples if ctx[0] == cfg.ifname]) + ksft_eq(expect_tuples, ctx_tuples) + + # And finally both with ifindex and skip main + ctxs = cfg.ethnl.rss_get({'header': {'dev-name': cfg.ifname}, 'start-context': 1}, dump=True) + ctx_tuples = set([(c['header']['dev-name'], c.get('context', -1)) for c in ctxs]) + ksft_eq(expect_tuples, ctx_tuples) + + def test_rss_context(cfg, ctx_cnt=1, create_with_cfg=None): """ Test separating traffic into RSS contexts. @@ -315,10 +471,15 @@ def test_rss_context(cfg, ctx_cnt=1, create_with_cfg=None): raise ksft_pr(f"Failed to create context {i + 1}, trying to test what we got") ctx_cnt = i + if cfg.context_cnt is None: + cfg.context_cnt = ctx_cnt break + _rss_key_check(cfg, context=ctx_id) + if not create_with_cfg: ethtool(f"-X {cfg.ifname} context {ctx_id} {want_cfg}") + _rss_key_check(cfg, context=ctx_id) # Sanity check the context we just created data = get_rss(cfg, ctx_id) @@ -326,10 +487,12 @@ def test_rss_context(cfg, ctx_cnt=1, create_with_cfg=None): ksft_eq(max(data['rss-indirection-table']), 2 + i * 2 + 1, "Unexpected context cfg: " + str(data)) ports.append(rand_port()) - flow = f"flow-type tcp{cfg.addr_ipver} dst-port {ports[i]} context {ctx_id}" + flow = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} dst-port {ports[i]} context {ctx_id}" ntuple = ethtool_create(cfg, "-N", flow) defer(ethtool, f"-N {cfg.ifname} delete {ntuple}") + _ntuple_rule_check(cfg, ntuple, ctx_id) + for i in range(ctx_cnt): _send_traffic_check(cfg, ports[i], f"context {i}", { 'target': (2+i*2, 3+i*2), @@ -365,8 +528,7 @@ def test_rss_context_out_of_order(cfg, ctx_cnt=4): """ require_ntuple(cfg) - - requested_ctx_cnt = ctx_cnt + require_context_cnt(cfg, 4) # Try to allocate more queues when necessary qcnt = len(_get_rx_cnts(cfg)) @@ -413,7 +575,7 @@ def test_rss_context_out_of_order(cfg, ctx_cnt=4): ctx.append(defer(ethtool, f"-X {cfg.ifname} context {ctx_id} delete")) ports.append(rand_port()) - flow = f"flow-type tcp{cfg.addr_ipver} dst-port {ports[i]} context {ctx_id}" + flow = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} dst-port {ports[i]} context {ctx_id}" ntuple_id = ethtool_create(cfg, "-N", flow) ntuple.append(defer(ethtool, f"-N {cfg.ifname} delete {ntuple_id}")) @@ -431,9 +593,6 @@ def test_rss_context_out_of_order(cfg, ctx_cnt=4): remove_ctx(-1) check_traffic() - if requested_ctx_cnt != ctx_cnt: - raise KsftSkipEx(f"Tested only {ctx_cnt} contexts, wanted {requested_ctx_cnt}") - def test_rss_context_overlap(cfg, other_ctx=0): """ @@ -442,6 +601,8 @@ def test_rss_context_overlap(cfg, other_ctx=0): """ require_ntuple(cfg) + if other_ctx: + require_context_cnt(cfg, 2) queue_cnt = len(_get_rx_cnts(cfg)) if queue_cnt < 4: @@ -466,7 +627,7 @@ def test_rss_context_overlap(cfg, other_ctx=0): port = rand_port() if other_ctx: - flow = f"flow-type tcp{cfg.addr_ipver} dst-port {port} context {other_ctx}" + flow = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} dst-port {port} context {other_ctx}" ntuple_id = ethtool_create(cfg, "-N", flow) ntuple = defer(ethtool, f"-N {cfg.ifname} delete {ntuple_id}") @@ -484,7 +645,7 @@ def test_rss_context_overlap(cfg, other_ctx=0): # Now create a rule for context 1 and make sure traffic goes to a subset if other_ctx: ntuple.exec() - flow = f"flow-type tcp{cfg.addr_ipver} dst-port {port} context {ctx_id}" + flow = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} dst-port {port} context {ctx_id}" ntuple_id = ethtool_create(cfg, "-N", flow) defer(ethtool, f"-N {cfg.ifname} delete {ntuple_id}") @@ -503,17 +664,166 @@ def test_rss_context_overlap2(cfg): test_rss_context_overlap(cfg, True) +def test_flow_add_context_missing(cfg): + """ + Test that we are not allowed to add a rule pointing to an RSS context + which was never created. + """ + + require_ntuple(cfg) + + # Find a context which doesn't exist + for ctx_id in range(1, 100): + try: + get_rss(cfg, context=ctx_id) + except CmdExitFailure: + break + + with ksft_raises(CmdExitFailure) as cm: + flow = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} dst-port 1234 context {ctx_id}" + ntuple_id = ethtool_create(cfg, "-N", flow) + ethtool(f"-N {cfg.ifname} delete {ntuple_id}") + if cm.exception: + ksft_in('Invalid argument', cm.exception.cmd.stderr) + + +def test_delete_rss_context_busy(cfg): + """ + Test that deletion returns -EBUSY when an rss context is being used + by an ntuple filter. + """ + + require_ntuple(cfg) + + # create additional rss context + ctx_id = ethtool_create(cfg, "-X", "context new") + ctx_deleter = defer(ethtool, f"-X {cfg.ifname} context {ctx_id} delete") + + # utilize context from ntuple filter + port = rand_port() + flow = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} dst-port {port} context {ctx_id}" + ntuple_id = ethtool_create(cfg, "-N", flow) + defer(ethtool, f"-N {cfg.ifname} delete {ntuple_id}") + + # attempt to delete in-use context + try: + ctx_deleter.exec_only() + ctx_deleter.cancel() + raise KsftFailEx(f"deleted context {ctx_id} used by rule {ntuple_id}") + except CmdExitFailure: + pass + + +def test_rss_ntuple_addition(cfg): + """ + Test that the queue offset (ring_cookie) of an ntuple rule is added + to the queue number read from the indirection table. + """ + + require_ntuple(cfg) + + queue_cnt = len(_get_rx_cnts(cfg)) + if queue_cnt < 4: + try: + ksft_pr(f"Increasing queue count {queue_cnt} -> 4") + ethtool(f"-L {cfg.ifname} combined 4") + defer(ethtool, f"-L {cfg.ifname} combined {queue_cnt}") + except: + raise KsftSkipEx("Not enough queues for the test") + + # Use queue 0 for normal traffic + ethtool(f"-X {cfg.ifname} equal 1") + defer(ethtool, f"-X {cfg.ifname} default") + + # create additional rss context + ctx_id = ethtool_create(cfg, "-X", "context new equal 2") + defer(ethtool, f"-X {cfg.ifname} context {ctx_id} delete") + + # utilize context from ntuple filter + port = rand_port() + flow = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} dst-port {port} context {ctx_id} action 2" + try: + ntuple_id = ethtool_create(cfg, "-N", flow) + except CmdExitFailure: + raise KsftSkipEx("Ntuple filter with RSS and nonzero action not supported") + defer(ethtool, f"-N {cfg.ifname} delete {ntuple_id}") + + _send_traffic_check(cfg, port, f"context {ctx_id}", { 'target': (2, 3), + 'empty' : (1,), + 'noise' : (0,) }) + + +def test_rss_default_context_rule(cfg): + """ + Allocate a port, direct this port to context 0, then create a new RSS + context and steer all TCP traffic to it (context 1). Verify that: + * Traffic to the specific port continues to use queues of the main + context (0/1). + * Traffic to any other TCP port is redirected to the new context + (queues 2/3). + """ + + require_ntuple(cfg) + + queue_cnt = len(_get_rx_cnts(cfg)) + if queue_cnt < 4: + try: + ksft_pr(f"Increasing queue count {queue_cnt} -> 4") + ethtool(f"-L {cfg.ifname} combined 4") + defer(ethtool, f"-L {cfg.ifname} combined {queue_cnt}") + except Exception as exc: + raise KsftSkipEx("Not enough queues for the test") from exc + + # Use queues 0 and 1 for the main context + ethtool(f"-X {cfg.ifname} equal 2") + defer(ethtool, f"-X {cfg.ifname} default") + + # Create a new RSS context that uses queues 2 and 3 + ctx_id = ethtool_create(cfg, "-X", "context new start 2 equal 2") + defer(ethtool, f"-X {cfg.ifname} context {ctx_id} delete") + + # Generic low-priority rule: redirect all TCP traffic to the new context. + # Give it an explicit higher location number (lower priority). + flow_generic = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} context {ctx_id} loc 1" + ethtool(f"-N {cfg.ifname} {flow_generic}") + defer(ethtool, f"-N {cfg.ifname} delete 1") + + # Specific high-priority rule for a random port that should stay on context 0. + # Assign loc 0 so it is evaluated before the generic rule. + port_main = rand_port() + flow_main = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} dst-port {port_main} context 0 loc 0" + ethtool(f"-N {cfg.ifname} {flow_main}") + defer(ethtool, f"-N {cfg.ifname} delete 0") + + _ntuple_rule_check(cfg, 1, ctx_id) + + # Verify that traffic matching the specific rule still goes to queues 0/1 + _send_traffic_check(cfg, port_main, "context 0", + { 'target': (0, 1), + 'empty' : (2, 3) }) + + # And that traffic for any other port is steered to the new context + port_other = rand_port() + _send_traffic_check(cfg, port_other, f"context {ctx_id}", + { 'target': (2, 3), + 'noise' : (0, 1) }) + + def main() -> None: with NetDrvEpEnv(__file__, nsim_test=False) as cfg: + cfg.context_cnt = None cfg.ethnl = EthtoolFamily() cfg.netdevnl = NetdevFamily() ksft_run([test_rss_key_indir, test_rss_queue_reconfigure, test_rss_resize, test_hitless_key_update, test_rss_context, test_rss_context4, test_rss_context32, - test_rss_context_queue_reconfigure, + test_rss_context_dump, test_rss_context_queue_reconfigure, test_rss_context_overlap, test_rss_context_overlap2, - test_rss_context_out_of_order, test_rss_context4_create_with_cfg], + test_rss_context_out_of_order, test_rss_context4_create_with_cfg, + test_flow_add_context_missing, + test_delete_rss_context_busy, test_rss_ntuple_addition, + test_rss_default_context_rule], args=(cfg, )) ksft_exit() diff --git a/tools/testing/selftests/drivers/net/hw/rss_flow_label.py b/tools/testing/selftests/drivers/net/hw/rss_flow_label.py new file mode 100755 index 000000000000..6fa95fe27c47 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/rss_flow_label.py @@ -0,0 +1,167 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +""" +Tests for RSS hashing on IPv6 Flow Label. +""" + +import glob +import os +import socket +from lib.py import CmdExitFailure +from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_ge, ksft_in, \ + ksft_not_in, ksft_raises, KsftSkipEx +from lib.py import bkg, cmd, defer, fd_read_timeout, rand_port +from lib.py import NetDrvEpEnv + + +def _check_system(cfg): + if not hasattr(socket, "SO_INCOMING_CPU"): + raise KsftSkipEx("socket.SO_INCOMING_CPU was added in Python 3.11") + + qcnt = len(glob.glob(f"/sys/class/net/{cfg.ifname}/queues/rx-*")) + if qcnt < 2: + raise KsftSkipEx(f"Local has only {qcnt} queues") + + for f in [f"/sys/class/net/{cfg.ifname}/queues/rx-0/rps_flow_cnt", + f"/sys/class/net/{cfg.ifname}/queues/rx-0/rps_cpus"]: + try: + with open(f, 'r') as fp: + setting = fp.read().strip() + # CPU mask will be zeros and commas + if setting.replace("0", "").replace(",", ""): + raise KsftSkipEx(f"RPS/RFS is configured: {f}: {setting}") + except FileNotFoundError: + pass + + # 1 is the default, if someone changed it we probably shouldn"t mess with it + af = cmd("cat /proc/sys/net/ipv6/auto_flowlabels", host=cfg.remote).stdout + if af.strip() != "1": + raise KsftSkipEx("Remote does not have auto_flowlabels enabled") + + +def _ethtool_get_cfg(cfg, fl_type): + descr = cmd(f"ethtool -n {cfg.ifname} rx-flow-hash {fl_type}").stdout + + converter = { + "IP SA": "s", + "IP DA": "d", + "L3 proto": "t", + "L4 bytes 0 & 1 [TCP/UDP src port]": "f", + "L4 bytes 2 & 3 [TCP/UDP dst port]": "n", + "IPv6 Flow Label": "l", + } + + ret = "" + for line in descr.split("\n")[1:-2]: + # if this raises we probably need to add more keys to converter above + ret += converter[line] + return ret + + +def _traffic(cfg, one_sock, one_cpu): + local_port = rand_port(socket.SOCK_DGRAM) + remote_port = rand_port(socket.SOCK_DGRAM) + + sock = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM) + sock.bind(("", local_port)) + sock.connect((cfg.remote_addr_v["6"], 0)) + if one_sock: + send = f"exec 5<>/dev/udp/{cfg.addr_v['6']}/{local_port}; " \ + "for i in `seq 20`; do echo a >&5; sleep 0.02; done; exec 5>&-" + else: + send = "for i in `seq 20`; do echo a | socat -t0.02 - UDP6:" \ + f"[{cfg.addr_v['6']}]:{local_port},sourceport={remote_port}; done" + + cpus = set() + with bkg(send, shell=True, host=cfg.remote, exit_wait=True): + for _ in range(20): + fd_read_timeout(sock.fileno(), 1) + cpu = sock.getsockopt(socket.SOL_SOCKET, socket.SO_INCOMING_CPU) + cpus.add(cpu) + + if one_cpu: + ksft_eq(len(cpus), 1, + f"{one_sock=} - expected one CPU, got traffic on: {cpus=}") + else: + ksft_ge(len(cpus), 2, + f"{one_sock=} - expected many CPUs, got traffic on: {cpus=}") + + +def test_rss_flow_label(cfg): + """ + Test hashing on IPv6 flow label. Send traffic over a single socket + and over multiple sockets. Depend on the remote having auto-label + enabled so that it randomizes the label per socket. + """ + + cfg.require_ipver("6") + cfg.require_cmd("socat", remote=True) + _check_system(cfg) + + # Enable flow label hashing for UDP6 + initial = _ethtool_get_cfg(cfg, "udp6") + no_lbl = initial.replace("l", "") + if "l" not in initial: + try: + cmd(f"ethtool -N {cfg.ifname} rx-flow-hash udp6 l{no_lbl}") + except CmdExitFailure as exc: + raise KsftSkipEx("Device doesn't support Flow Label for UDP6") from exc + + defer(cmd, f"ethtool -N {cfg.ifname} rx-flow-hash udp6 {initial}") + + _traffic(cfg, one_sock=True, one_cpu=True) + _traffic(cfg, one_sock=False, one_cpu=False) + + # Disable it, we should see no hashing (reset was already defer()ed) + cmd(f"ethtool -N {cfg.ifname} rx-flow-hash udp6 {no_lbl}") + + _traffic(cfg, one_sock=False, one_cpu=True) + + +def _check_v4_flow_types(cfg): + for fl_type in ["tcp4", "udp4", "ah4", "esp4", "sctp4"]: + try: + cur = cmd(f"ethtool -n {cfg.ifname} rx-flow-hash {fl_type}").stdout + ksft_not_in("Flow Label", cur, + comment=f"{fl_type=} has Flow Label:" + cur) + except CmdExitFailure: + # Probably does not support this flow type + pass + + +def test_rss_flow_label_6only(cfg): + """ + Test interactions with IPv4 flow types. It should not be possible to set + IPv6 Flow Label hashing for an IPv4 flow type. The Flow Label should also + not appear in the IPv4 "current config". + """ + + with ksft_raises(CmdExitFailure) as cm: + cmd(f"ethtool -N {cfg.ifname} rx-flow-hash tcp4 sdfnl") + ksft_in("Invalid argument", cm.exception.cmd.stderr) + + _check_v4_flow_types(cfg) + + # Try to enable Flow Labels and check again, in case it leaks thru + initial = _ethtool_get_cfg(cfg, "udp6") + changed = initial.replace("l", "") if "l" in initial else initial + "l" + + cmd(f"ethtool -N {cfg.ifname} rx-flow-hash udp6 {changed}") + restore = defer(cmd, f"ethtool -N {cfg.ifname} rx-flow-hash udp6 {initial}") + + _check_v4_flow_types(cfg) + restore.exec() + _check_v4_flow_types(cfg) + + +def main() -> None: + with NetDrvEpEnv(__file__, nsim_test=False) as cfg: + ksft_run([test_rss_flow_label, + test_rss_flow_label_6only], + args=(cfg, )) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hw/rss_input_xfrm.py b/tools/testing/selftests/drivers/net/hw/rss_input_xfrm.py new file mode 100755 index 000000000000..72880e388478 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/rss_input_xfrm.py @@ -0,0 +1,92 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +import multiprocessing +import socket +from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_ge, cmd, fd_read_timeout +from lib.py import NetDrvEpEnv +from lib.py import EthtoolFamily, NetdevFamily +from lib.py import KsftSkipEx, KsftFailEx +from lib.py import rand_port + + +def traffic(cfg, local_port, remote_port, ipver): + af_inet = socket.AF_INET if ipver == "4" else socket.AF_INET6 + sock = socket.socket(af_inet, socket.SOCK_DGRAM) + sock.bind(("", local_port)) + sock.connect((cfg.remote_addr_v[ipver], remote_port)) + tgt = f"{ipver}:[{cfg.addr_v[ipver]}]:{local_port},sourceport={remote_port}" + cmd("echo a | socat - UDP" + tgt, host=cfg.remote) + fd_read_timeout(sock.fileno(), 5) + return sock.getsockopt(socket.SOL_SOCKET, socket.SO_INCOMING_CPU) + + +def test_rss_input_xfrm(cfg, ipver): + """ + Test symmetric input_xfrm. + If symmetric RSS hash is configured, send traffic twice, swapping the + src/dst UDP ports, and verify that the same queue is receiving the traffic + in both cases (IPs are constant). + """ + + if multiprocessing.cpu_count() < 2: + raise KsftSkipEx("Need at least two CPUs to test symmetric RSS hash") + + cfg.require_cmd("socat", local=False, remote=True) + + if not hasattr(socket, "SO_INCOMING_CPU"): + raise KsftSkipEx("socket.SO_INCOMING_CPU was added in Python 3.11") + + rss = cfg.ethnl.rss_get({'header': {'dev-name': cfg.ifname}}) + input_xfrm = set(filter(lambda x: 'sym' in x, rss.get('input-xfrm', {}))) + + # Check for symmetric xor/or-xor + if not input_xfrm: + raise KsftSkipEx("Symmetric RSS hash not requested") + + cpus = set() + successful = 0 + for _ in range(100): + try: + port1 = rand_port(socket.SOCK_DGRAM) + port2 = rand_port(socket.SOCK_DGRAM) + cpu1 = traffic(cfg, port1, port2, ipver) + cpu2 = traffic(cfg, port2, port1, ipver) + cpus.update([cpu1, cpu2]) + ksft_eq( + cpu1, cpu2, comment=f"Received traffic on different cpus with ports ({port1 = }, {port2 = }) while symmetric hash is configured") + + successful += 1 + if successful == 10: + break + except: + continue + else: + raise KsftFailEx("Failed to run traffic") + + ksft_ge(len(cpus), 2, + comment=f"Received traffic on less than two cpus {cpus = }") + + +def test_rss_input_xfrm_ipv4(cfg): + cfg.require_ipver("4") + test_rss_input_xfrm(cfg, "4") + + +def test_rss_input_xfrm_ipv6(cfg): + cfg.require_ipver("6") + test_rss_input_xfrm(cfg, "6") + + +def main() -> None: + with NetDrvEpEnv(__file__, nsim_test=False) as cfg: + cfg.ethnl = EthtoolFamily() + cfg.netdevnl = NetdevFamily() + + ksft_run([test_rss_input_xfrm_ipv4, test_rss_input_xfrm_ipv6], + args=(cfg, )) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hw/toeplitz.c b/tools/testing/selftests/drivers/net/hw/toeplitz.c new file mode 100644 index 000000000000..d23b3b0c20a3 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/toeplitz.c @@ -0,0 +1,655 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Toeplitz test + * + * 1. Read packets and their rx_hash using PF_PACKET/TPACKET_V3 + * 2. Compute the rx_hash in software based on the packet contents + * 3. Compare the two + * + * Optionally, either '-C $rx_irq_cpu_list' or '-r $rps_bitmap' may be given. + * + * If '-C $rx_irq_cpu_list' is given, also + * + * 4. Identify the cpu on which the packet arrived with PACKET_FANOUT_CPU + * 5. Compute the rxqueue that RSS would select based on this rx_hash + * 6. Using the $rx_irq_cpu_list map, identify the arriving cpu based on rxq irq + * 7. Compare the cpus from 4 and 6 + * + * Else if '-r $rps_bitmap' is given, also + * + * 4. Identify the cpu on which the packet arrived with PACKET_FANOUT_CPU + * 5. Compute the cpu that RPS should select based on rx_hash and $rps_bitmap + * 6. Compare the cpus from 4 and 5 + */ + +#define _GNU_SOURCE + +#include <arpa/inet.h> +#include <errno.h> +#include <error.h> +#include <fcntl.h> +#include <getopt.h> +#include <linux/filter.h> +#include <linux/if_ether.h> +#include <linux/if_packet.h> +#include <net/if.h> +#include <netdb.h> +#include <netinet/ip.h> +#include <netinet/ip6.h> +#include <netinet/tcp.h> +#include <netinet/udp.h> +#include <poll.h> +#include <stdbool.h> +#include <stddef.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/mman.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/sysinfo.h> +#include <sys/time.h> +#include <sys/types.h> +#include <unistd.h> + +#include <ynl.h> +#include "ethtool-user.h" + +#include "kselftest.h" +#include "../../../net/lib/ksft.h" + +#define TOEPLITZ_KEY_MIN_LEN 40 +#define TOEPLITZ_KEY_MAX_LEN 60 + +#define TOEPLITZ_STR_LEN(K) (((K) * 3) - 1) /* hex encoded: AA:BB:CC:...:ZZ */ +#define TOEPLITZ_STR_MIN_LEN TOEPLITZ_STR_LEN(TOEPLITZ_KEY_MIN_LEN) +#define TOEPLITZ_STR_MAX_LEN TOEPLITZ_STR_LEN(TOEPLITZ_KEY_MAX_LEN) + +#define FOUR_TUPLE_MAX_LEN ((sizeof(struct in6_addr) * 2) + (sizeof(uint16_t) * 2)) + +#define RSS_MAX_CPUS (1 << 16) /* real constraint is PACKET_FANOUT_MAX */ +#define RSS_MAX_INDIR (1 << 16) + +#define RPS_MAX_CPUS 16UL /* must be a power of 2 */ + +/* configuration options (cmdline arguments) */ +static uint16_t cfg_dport = 8000; +static int cfg_family = AF_INET6; +static char *cfg_ifname = "eth0"; +static int cfg_num_queues; +static int cfg_num_rps_cpus; +static bool cfg_sink; +static int cfg_type = SOCK_STREAM; +static int cfg_timeout_msec = 1000; +static bool cfg_verbose; + +/* global vars */ +static int num_cpus; +static int ring_block_nr; +static int ring_block_sz; + +/* stats */ +static int frames_received; +static int frames_nohash; +static int frames_error; + +#define log_verbose(args...) do { if (cfg_verbose) fprintf(stderr, args); } while (0) + +/* tpacket ring */ +struct ring_state { + int fd; + char *mmap; + int idx; + int cpu; +}; + +static unsigned int rx_irq_cpus[RSS_MAX_CPUS]; /* map from rxq to cpu */ +static int rps_silo_to_cpu[RPS_MAX_CPUS]; +static unsigned char toeplitz_key[TOEPLITZ_KEY_MAX_LEN]; +static unsigned int rss_indir_tbl[RSS_MAX_INDIR]; +static unsigned int rss_indir_tbl_size; +static struct ring_state rings[RSS_MAX_CPUS]; + +static inline uint32_t toeplitz(const unsigned char *four_tuple, + const unsigned char *key) +{ + int i, bit, ret = 0; + uint32_t key32; + + key32 = ntohl(*((uint32_t *)key)); + key += 4; + + for (i = 0; i < FOUR_TUPLE_MAX_LEN; i++) { + for (bit = 7; bit >= 0; bit--) { + if (four_tuple[i] & (1 << bit)) + ret ^= key32; + + key32 <<= 1; + key32 |= !!(key[0] & (1 << bit)); + } + key++; + } + + return ret; +} + +/* Compare computed cpu with arrival cpu from packet_fanout_cpu */ +static void verify_rss(uint32_t rx_hash, int cpu) +{ + int queue; + + if (rss_indir_tbl_size) + queue = rss_indir_tbl[rx_hash % rss_indir_tbl_size]; + else + queue = rx_hash % cfg_num_queues; + + log_verbose(" rxq %d (cpu %d)", queue, rx_irq_cpus[queue]); + if (rx_irq_cpus[queue] != cpu) { + log_verbose(". error: rss cpu mismatch (%d)", cpu); + frames_error++; + } +} + +static void verify_rps(uint64_t rx_hash, int cpu) +{ + int silo = (rx_hash * cfg_num_rps_cpus) >> 32; + + log_verbose(" silo %d (cpu %d)", silo, rps_silo_to_cpu[silo]); + if (rps_silo_to_cpu[silo] != cpu) { + log_verbose(". error: rps cpu mismatch (%d)", cpu); + frames_error++; + } +} + +static void log_rxhash(int cpu, uint32_t rx_hash, + const char *addrs, int addr_len) +{ + char saddr[INET6_ADDRSTRLEN], daddr[INET6_ADDRSTRLEN]; + uint16_t *ports; + + if (!inet_ntop(cfg_family, addrs, saddr, sizeof(saddr)) || + !inet_ntop(cfg_family, addrs + addr_len, daddr, sizeof(daddr))) + error(1, 0, "address parse error"); + + ports = (void *)addrs + (addr_len * 2); + log_verbose("cpu %d: rx_hash 0x%08x [saddr %s daddr %s sport %02hu dport %02hu]", + cpu, rx_hash, saddr, daddr, + ntohs(ports[0]), ntohs(ports[1])); +} + +/* Compare computed rxhash with rxhash received from tpacket_v3 */ +static void verify_rxhash(const char *pkt, uint32_t rx_hash, int cpu) +{ + unsigned char four_tuple[FOUR_TUPLE_MAX_LEN] = {0}; + uint32_t rx_hash_sw; + const char *addrs; + int addr_len; + + if (cfg_family == AF_INET) { + addr_len = sizeof(struct in_addr); + addrs = pkt + offsetof(struct iphdr, saddr); + } else { + addr_len = sizeof(struct in6_addr); + addrs = pkt + offsetof(struct ip6_hdr, ip6_src); + } + + memcpy(four_tuple, addrs, (addr_len * 2) + (sizeof(uint16_t) * 2)); + rx_hash_sw = toeplitz(four_tuple, toeplitz_key); + + if (cfg_verbose) + log_rxhash(cpu, rx_hash, addrs, addr_len); + + if (rx_hash != rx_hash_sw) { + log_verbose(" != expected 0x%x\n", rx_hash_sw); + frames_error++; + return; + } + + log_verbose(" OK"); + if (cfg_num_queues) + verify_rss(rx_hash, cpu); + else if (cfg_num_rps_cpus) + verify_rps(rx_hash, cpu); + log_verbose("\n"); +} + +static char *recv_frame(const struct ring_state *ring, char *frame) +{ + struct tpacket3_hdr *hdr = (void *)frame; + + if (hdr->hv1.tp_rxhash) + verify_rxhash(frame + hdr->tp_net, hdr->hv1.tp_rxhash, + ring->cpu); + else + frames_nohash++; + + return frame + hdr->tp_next_offset; +} + +/* A single TPACKET_V3 block can hold multiple frames */ +static bool recv_block(struct ring_state *ring) +{ + struct tpacket_block_desc *block; + char *frame; + int i; + + block = (void *)(ring->mmap + ring->idx * ring_block_sz); + if (!(block->hdr.bh1.block_status & TP_STATUS_USER)) + return false; + + frame = (char *)block; + frame += block->hdr.bh1.offset_to_first_pkt; + + for (i = 0; i < block->hdr.bh1.num_pkts; i++) { + frame = recv_frame(ring, frame); + frames_received++; + } + + block->hdr.bh1.block_status = TP_STATUS_KERNEL; + ring->idx = (ring->idx + 1) % ring_block_nr; + + return true; +} + +/* simple test: sleep once unconditionally and then process all rings */ +static void process_rings(void) +{ + int i; + + usleep(1000 * cfg_timeout_msec); + + for (i = 0; i < num_cpus; i++) + do {} while (recv_block(&rings[i])); + + fprintf(stderr, "count: pass=%u nohash=%u fail=%u\n", + frames_received - frames_nohash - frames_error, + frames_nohash, frames_error); +} + +static char *setup_ring(int fd) +{ + struct tpacket_req3 req3 = {0}; + void *ring; + + req3.tp_retire_blk_tov = cfg_timeout_msec / 8; + req3.tp_feature_req_word = TP_FT_REQ_FILL_RXHASH; + + req3.tp_frame_size = 2048; + req3.tp_frame_nr = 1 << 10; + req3.tp_block_nr = 16; + + req3.tp_block_size = req3.tp_frame_size * req3.tp_frame_nr; + req3.tp_block_size /= req3.tp_block_nr; + + if (setsockopt(fd, SOL_PACKET, PACKET_RX_RING, &req3, sizeof(req3))) + error(1, errno, "setsockopt PACKET_RX_RING"); + + ring_block_sz = req3.tp_block_size; + ring_block_nr = req3.tp_block_nr; + + ring = mmap(0, req3.tp_block_size * req3.tp_block_nr, + PROT_READ | PROT_WRITE, + MAP_SHARED | MAP_LOCKED | MAP_POPULATE, fd, 0); + if (ring == MAP_FAILED) + error(1, 0, "mmap failed"); + + return ring; +} + +static void __set_filter(int fd, int off_proto, uint8_t proto, int off_dport) +{ + struct sock_filter filter[] = { + BPF_STMT(BPF_LD + BPF_B + BPF_ABS, SKF_AD_OFF + SKF_AD_PKTTYPE), + BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, PACKET_HOST, 0, 4), + BPF_STMT(BPF_LD + BPF_B + BPF_ABS, off_proto), + BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, proto, 0, 2), + BPF_STMT(BPF_LD + BPF_H + BPF_ABS, off_dport), + BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, cfg_dport, 1, 0), + BPF_STMT(BPF_RET + BPF_K, 0), + BPF_STMT(BPF_RET + BPF_K, 0xFFFF), + }; + struct sock_fprog prog = {}; + + prog.filter = filter; + prog.len = ARRAY_SIZE(filter); + if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &prog, sizeof(prog))) + error(1, errno, "setsockopt filter"); +} + +/* filter on transport protocol and destination port */ +static void set_filter(int fd) +{ + const int off_dport = offsetof(struct tcphdr, dest); /* same for udp */ + uint8_t proto; + + proto = cfg_type == SOCK_STREAM ? IPPROTO_TCP : IPPROTO_UDP; + if (cfg_family == AF_INET) + __set_filter(fd, offsetof(struct iphdr, protocol), proto, + sizeof(struct iphdr) + off_dport); + else + __set_filter(fd, offsetof(struct ip6_hdr, ip6_nxt), proto, + sizeof(struct ip6_hdr) + off_dport); +} + +/* drop everything: used temporarily during setup */ +static void set_filter_null(int fd) +{ + struct sock_filter filter[] = { + BPF_STMT(BPF_RET + BPF_K, 0), + }; + struct sock_fprog prog = {}; + + prog.filter = filter; + prog.len = ARRAY_SIZE(filter); + if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &prog, sizeof(prog))) + error(1, errno, "setsockopt filter"); +} + +static int create_ring(char **ring) +{ + struct fanout_args args = { + .id = 1, + .type_flags = PACKET_FANOUT_CPU, + .max_num_members = RSS_MAX_CPUS + }; + struct sockaddr_ll ll = { 0 }; + int fd, val; + + fd = socket(PF_PACKET, SOCK_DGRAM, 0); + if (fd == -1) + error(1, errno, "socket creation failed"); + + val = TPACKET_V3; + if (setsockopt(fd, SOL_PACKET, PACKET_VERSION, &val, sizeof(val))) + error(1, errno, "setsockopt PACKET_VERSION"); + *ring = setup_ring(fd); + + /* block packets until all rings are added to the fanout group: + * else packets can arrive during setup and get misclassified + */ + set_filter_null(fd); + + ll.sll_family = AF_PACKET; + ll.sll_ifindex = if_nametoindex(cfg_ifname); + ll.sll_protocol = cfg_family == AF_INET ? htons(ETH_P_IP) : + htons(ETH_P_IPV6); + if (bind(fd, (void *)&ll, sizeof(ll))) + error(1, errno, "bind"); + + /* must come after bind: verifies all programs in group match */ + if (setsockopt(fd, SOL_PACKET, PACKET_FANOUT, &args, sizeof(args))) { + /* on failure, retry using old API if that is sufficient: + * it has a hard limit of 256 sockets, so only try if + * (a) only testing rxhash, not RSS or (b) <= 256 cpus. + * in this API, the third argument is left implicit. + */ + if (cfg_num_queues || num_cpus > 256 || + setsockopt(fd, SOL_PACKET, PACKET_FANOUT, + &args, sizeof(uint32_t))) + error(1, errno, "setsockopt PACKET_FANOUT cpu"); + } + + return fd; +} + +/* setup inet(6) socket to blackhole the test traffic, if arg '-s' */ +static int setup_sink(void) +{ + int fd, val; + + fd = socket(cfg_family, cfg_type, 0); + if (fd == -1) + error(1, errno, "socket %d.%d", cfg_family, cfg_type); + + val = 1 << 20; + if (setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &val, sizeof(val))) + error(1, errno, "setsockopt rcvbuf"); + + return fd; +} + +static void setup_rings(void) +{ + int i; + + for (i = 0; i < num_cpus; i++) { + rings[i].cpu = i; + rings[i].fd = create_ring(&rings[i].mmap); + } + + /* accept packets once all rings in the fanout group are up */ + for (i = 0; i < num_cpus; i++) + set_filter(rings[i].fd); +} + +static void cleanup_rings(void) +{ + int i; + + for (i = 0; i < num_cpus; i++) { + if (munmap(rings[i].mmap, ring_block_nr * ring_block_sz)) + error(1, errno, "munmap"); + if (close(rings[i].fd)) + error(1, errno, "close"); + } +} + +static void parse_cpulist(const char *arg) +{ + do { + rx_irq_cpus[cfg_num_queues++] = strtol(arg, NULL, 10); + + arg = strchr(arg, ','); + if (!arg) + break; + arg++; // skip ',' + } while (1); +} + +static void show_cpulist(void) +{ + int i; + + for (i = 0; i < cfg_num_queues; i++) + fprintf(stderr, "rxq %d: cpu %d\n", i, rx_irq_cpus[i]); +} + +static void show_silos(void) +{ + int i; + + for (i = 0; i < cfg_num_rps_cpus; i++) + fprintf(stderr, "silo %d: cpu %d\n", i, rps_silo_to_cpu[i]); +} + +static void parse_toeplitz_key(const char *str, int slen, unsigned char *key) +{ + int i, ret, off; + + if (slen < TOEPLITZ_STR_MIN_LEN || + slen > TOEPLITZ_STR_MAX_LEN + 1) + error(1, 0, "invalid toeplitz key"); + + for (i = 0, off = 0; off < slen; i++, off += 3) { + ret = sscanf(str + off, "%hhx", &key[i]); + if (ret != 1) + error(1, 0, "key parse error at %d off %d len %d", + i, off, slen); + } +} + +static void parse_rps_bitmap(const char *arg) +{ + unsigned long bitmap; + int i; + + bitmap = strtoul(arg, NULL, 0); + + if (bitmap & ~(RPS_MAX_CPUS - 1)) + error(1, 0, "rps bitmap 0x%lx out of bounds 0..%lu", + bitmap, RPS_MAX_CPUS - 1); + + for (i = 0; i < RPS_MAX_CPUS; i++) + if (bitmap & 1UL << i) + rps_silo_to_cpu[cfg_num_rps_cpus++] = i; +} + +static void read_rss_dev_info_ynl(void) +{ + struct ethtool_rss_get_req *req; + struct ethtool_rss_get_rsp *rsp; + struct ynl_sock *ys; + + ys = ynl_sock_create(&ynl_ethtool_family, NULL); + if (!ys) + error(1, errno, "ynl_sock_create failed"); + + req = ethtool_rss_get_req_alloc(); + if (!req) + error(1, errno, "ethtool_rss_get_req_alloc failed"); + + ethtool_rss_get_req_set_header_dev_name(req, cfg_ifname); + + rsp = ethtool_rss_get(ys, req); + if (!rsp) + error(1, ys->err.code, "YNL: %s", ys->err.msg); + + if (!rsp->_len.hkey) + error(1, 0, "RSS key not available for %s", cfg_ifname); + + if (rsp->_len.hkey < TOEPLITZ_KEY_MIN_LEN || + rsp->_len.hkey > TOEPLITZ_KEY_MAX_LEN) + error(1, 0, "RSS key length %u out of bounds [%u, %u]", + rsp->_len.hkey, TOEPLITZ_KEY_MIN_LEN, + TOEPLITZ_KEY_MAX_LEN); + + memcpy(toeplitz_key, rsp->hkey, rsp->_len.hkey); + + if (rsp->_count.indir > RSS_MAX_INDIR) + error(1, 0, "RSS indirection table too large (%u > %u)", + rsp->_count.indir, RSS_MAX_INDIR); + + /* If indir table not available we'll fallback to simple modulo math */ + if (rsp->_count.indir) { + memcpy(rss_indir_tbl, rsp->indir, + rsp->_count.indir * sizeof(rss_indir_tbl[0])); + rss_indir_tbl_size = rsp->_count.indir; + + log_verbose("RSS indirection table size: %u\n", + rss_indir_tbl_size); + } + + ethtool_rss_get_rsp_free(rsp); + ethtool_rss_get_req_free(req); + ynl_sock_destroy(ys); +} + +static void parse_opts(int argc, char **argv) +{ + static struct option long_options[] = { + {"dport", required_argument, 0, 'd'}, + {"cpus", required_argument, 0, 'C'}, + {"key", required_argument, 0, 'k'}, + {"iface", required_argument, 0, 'i'}, + {"ipv4", no_argument, 0, '4'}, + {"ipv6", no_argument, 0, '6'}, + {"sink", no_argument, 0, 's'}, + {"tcp", no_argument, 0, 't'}, + {"timeout", required_argument, 0, 'T'}, + {"udp", no_argument, 0, 'u'}, + {"verbose", no_argument, 0, 'v'}, + {"rps", required_argument, 0, 'r'}, + {0, 0, 0, 0} + }; + bool have_toeplitz = false; + int index, c; + + while ((c = getopt_long(argc, argv, "46C:d:i:k:r:stT:uv", long_options, &index)) != -1) { + switch (c) { + case '4': + cfg_family = AF_INET; + break; + case '6': + cfg_family = AF_INET6; + break; + case 'C': + parse_cpulist(optarg); + break; + case 'd': + cfg_dport = strtol(optarg, NULL, 0); + break; + case 'i': + cfg_ifname = optarg; + break; + case 'k': + parse_toeplitz_key(optarg, strlen(optarg), + toeplitz_key); + have_toeplitz = true; + break; + case 'r': + parse_rps_bitmap(optarg); + break; + case 's': + cfg_sink = true; + break; + case 't': + cfg_type = SOCK_STREAM; + break; + case 'T': + cfg_timeout_msec = strtol(optarg, NULL, 0); + break; + case 'u': + cfg_type = SOCK_DGRAM; + break; + case 'v': + cfg_verbose = true; + break; + + default: + error(1, 0, "unknown option %c", optopt); + break; + } + } + + if (!have_toeplitz) + read_rss_dev_info_ynl(); + + num_cpus = get_nprocs(); + if (num_cpus > RSS_MAX_CPUS) + error(1, 0, "increase RSS_MAX_CPUS"); + + if (cfg_num_queues && cfg_num_rps_cpus) + error(1, 0, + "Can't supply both RSS cpus ('-C') and RPS map ('-r')"); + if (cfg_verbose) { + show_cpulist(); + show_silos(); + } +} + +int main(int argc, char **argv) +{ + const int min_tests = 10; + int fd_sink = -1; + + parse_opts(argc, argv); + + if (cfg_sink) + fd_sink = setup_sink(); + + setup_rings(); + + /* Signal to test framework that we're ready to receive */ + ksft_ready(); + + process_rings(); + cleanup_rings(); + + if (cfg_sink && close(fd_sink)) + error(1, errno, "close sink"); + + if (frames_received - frames_nohash < min_tests) + error(1, 0, "too few frames for verification"); + + return frames_error; +} diff --git a/tools/testing/selftests/drivers/net/hw/toeplitz.py b/tools/testing/selftests/drivers/net/hw/toeplitz.py new file mode 100755 index 000000000000..d2db5ee9e358 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/toeplitz.py @@ -0,0 +1,211 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +""" +Toeplitz Rx hashing test: + - rxhash (the hash value calculation itself); + - RSS mapping from rxhash to rx queue; + - RPS mapping from rxhash to cpu. +""" + +import glob +import os +import socket +from lib.py import ksft_run, ksft_exit, ksft_pr +from lib.py import NetDrvEpEnv, EthtoolFamily, NetdevFamily +from lib.py import cmd, bkg, rand_port, defer +from lib.py import ksft_in +from lib.py import ksft_variants, KsftNamedVariant, KsftSkipEx, KsftFailEx + +# "define" for the ID of the Toeplitz hash function +ETH_RSS_HASH_TOP = 1 + + +def _check_rps_and_rfs_not_configured(cfg): + """Verify that RPS is not already configured.""" + + for rps_file in glob.glob(f"/sys/class/net/{cfg.ifname}/queues/rx-*/rps_cpus"): + with open(rps_file, "r", encoding="utf-8") as fp: + val = fp.read().strip() + if set(val) - {"0", ","}: + raise KsftSkipEx(f"RPS already configured on {rps_file}: {val}") + + rfs_file = "/proc/sys/net/core/rps_sock_flow_entries" + with open(rfs_file, "r", encoding="utf-8") as fp: + val = fp.read().strip() + if val != "0": + raise KsftSkipEx(f"RFS already configured {rfs_file}: {val}") + + +def _get_cpu_for_irq(irq): + with open(f"/proc/irq/{irq}/smp_affinity_list", "r", + encoding="utf-8") as fp: + data = fp.read().strip() + if "," in data or "-" in data: + raise KsftFailEx(f"IRQ{irq} is not mapped to a single core: {data}") + return int(data) + + +def _get_irq_cpus(cfg): + """ + Read the list of IRQs for the device Rx queues. + """ + queues = cfg.netnl.queue_get({"ifindex": cfg.ifindex}, dump=True) + napis = cfg.netnl.napi_get({"ifindex": cfg.ifindex}, dump=True) + + # Remap into ID-based dicts + napis = {n["id"]: n for n in napis} + queues = {f"{q['type']}{q['id']}": q for q in queues} + + cpus = [] + for rx in range(9999): + name = f"rx{rx}" + if name not in queues: + break + cpus.append(_get_cpu_for_irq(napis[queues[name]["napi-id"]]["irq"])) + + return cpus + + +def _get_unused_cpus(cfg, count=2): + """ + Get CPUs that are not used by Rx queues. + Returns a list of at least 'count' CPU numbers. + """ + + # Get CPUs used by Rx queues + rx_cpus = set(_get_irq_cpus(cfg)) + + # Get total number of CPUs + num_cpus = os.cpu_count() + + # Find unused CPUs + unused_cpus = [cpu for cpu in range(num_cpus) if cpu not in rx_cpus] + + if len(unused_cpus) < count: + raise KsftSkipEx(f"Need at {count} CPUs not used by Rx queues, found {len(unused_cpus)}") + + return unused_cpus[:count] + + +def _configure_rps(cfg, rps_cpus): + """Configure RPS for all Rx queues.""" + + mask = 0 + for cpu in rps_cpus: + mask |= (1 << cpu) + mask = hex(mask)[2:] + + # Set RPS bitmap for all rx queues + for rps_file in glob.glob(f"/sys/class/net/{cfg.ifname}/queues/rx-*/rps_cpus"): + with open(rps_file, "w", encoding="utf-8") as fp: + fp.write(mask) + + return mask + + +def _send_traffic(cfg, proto_flag, ipver, port): + """Send 20 packets of requested type.""" + + # Determine protocol and IP version for socat + if proto_flag == "-u": + proto = "UDP" + else: + proto = "TCP" + + baddr = f"[{cfg.addr_v['6']}]" if ipver == "6" else cfg.addr_v["4"] + + # Run socat in a loop to send traffic periodically + # Use sh -c with a loop similar to toeplitz_client.sh + socat_cmd = f""" + for i in `seq 20`; do + echo "msg $i" | socat -{ipver} -t 0.1 - {proto}:{baddr}:{port}; + sleep 0.001; + done + """ + + cmd(socat_cmd, shell=True, host=cfg.remote) + + +def _test_variants(): + for grp in ["", "rss", "rps"]: + for l4 in ["tcp", "udp"]: + for l3 in ["4", "6"]: + name = f"{l4}_ipv{l3}" + if grp: + name = f"{grp}_{name}" + yield KsftNamedVariant(name, "-" + l4[0], l3, grp) + + +@ksft_variants(_test_variants()) +def test(cfg, proto_flag, ipver, grp): + """Run a single toeplitz test.""" + + cfg.require_ipver(ipver) + + # Check that rxhash is enabled + ksft_in("receive-hashing: on", cmd(f"ethtool -k {cfg.ifname}").stdout) + + rss = cfg.ethnl.rss_get({"header": {"dev-index": cfg.ifindex}}) + # Make sure NIC is configured to use Toeplitz hash, and no key xfrm. + if rss.get('hfunc') != ETH_RSS_HASH_TOP or rss.get('input-xfrm'): + cfg.ethnl.rss_set({"header": {"dev-index": cfg.ifindex}, + "hfunc": ETH_RSS_HASH_TOP, + "input-xfrm": {}}) + defer(cfg.ethnl.rss_set, {"header": {"dev-index": cfg.ifindex}, + "hfunc": rss.get('hfunc'), + "input-xfrm": rss.get('input-xfrm', {}) + }) + + port = rand_port(socket.SOCK_DGRAM) + + toeplitz_path = cfg.test_dir / "toeplitz" + rx_cmd = [ + str(toeplitz_path), + "-" + ipver, + proto_flag, + "-d", str(port), + "-i", cfg.ifname, + "-T", "4000", + "-s", + "-v" + ] + + if grp: + _check_rps_and_rfs_not_configured(cfg) + if grp == "rss": + irq_cpus = ",".join([str(x) for x in _get_irq_cpus(cfg)]) + rx_cmd += ["-C", irq_cpus] + ksft_pr(f"RSS using CPUs: {irq_cpus}") + elif grp == "rps": + # Get CPUs not used by Rx queues and configure them for RPS + rps_cpus = _get_unused_cpus(cfg, count=2) + rps_mask = _configure_rps(cfg, rps_cpus) + defer(_configure_rps, cfg, []) + rx_cmd += ["-r", rps_mask] + ksft_pr(f"RPS using CPUs: {rps_cpus}, mask: {rps_mask}") + + # Run rx in background, it will exit once it has seen enough packets + with bkg(" ".join(rx_cmd), ksft_ready=True, exit_wait=True) as rx_proc: + while rx_proc.proc.poll() is None: + _send_traffic(cfg, proto_flag, ipver, port) + + # Check rx result + ksft_pr("Receiver output:") + ksft_pr(rx_proc.stdout.strip().replace('\n', '\n# ')) + if rx_proc.stderr: + ksft_pr(rx_proc.stderr.strip().replace('\n', '\n# ')) + + +def main() -> None: + """Ksft boilerplate main.""" + + with NetDrvEpEnv(__file__) as cfg: + cfg.ethnl = EthtoolFamily() + cfg.netnl = NetdevFamily() + ksft_run(cases=[test], args=(cfg,)) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hw/tso.py b/tools/testing/selftests/drivers/net/hw/tso.py new file mode 100755 index 000000000000..0998e68ebaf0 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/tso.py @@ -0,0 +1,261 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +"""Run the tools/testing/selftests/net/csum testsuite.""" + +import fcntl +import socket +import struct +import termios +import time + +from lib.py import ksft_pr, ksft_run, ksft_exit, KsftSkipEx, KsftXfailEx +from lib.py import ksft_eq, ksft_ge, ksft_lt +from lib.py import EthtoolFamily, NetdevFamily, NetDrvEpEnv +from lib.py import bkg, cmd, defer, ethtool, ip, rand_port, wait_port_listen + + +def sock_wait_drain(sock, max_wait=1000): + """Wait for all pending write data on the socket to get ACKed.""" + for _ in range(max_wait): + one = b'\0' * 4 + outq = fcntl.ioctl(sock.fileno(), termios.TIOCOUTQ, one) + outq = struct.unpack("I", outq)[0] + if outq == 0: + break + time.sleep(0.01) + ksft_eq(outq, 0) + + +def tcp_sock_get_retrans(sock): + """Get the number of retransmissions for the TCP socket.""" + info = sock.getsockopt(socket.SOL_TCP, socket.TCP_INFO, 512) + return struct.unpack("I", info[100:104])[0] + + +def run_one_stream(cfg, ipver, remote_v4, remote_v6, should_lso): + cfg.require_cmd("socat", local=False, remote=True) + + port = rand_port() + listen_cmd = f"socat -{ipver} -t 2 -u TCP-LISTEN:{port},reuseport /dev/null,ignoreeof" + + with bkg(listen_cmd, host=cfg.remote, exit_wait=True) as nc: + wait_port_listen(port, host=cfg.remote) + + if ipver == "4": + sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) + sock.connect((remote_v4, port)) + else: + sock = socket.socket(socket.AF_INET6, socket.SOCK_STREAM) + sock.connect((remote_v6, port)) + + # Small send to make sure the connection is working. + sock.send("ping".encode()) + sock_wait_drain(sock) + + # Send 4MB of data, record the LSO packet count. + qstat_old = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + buf = b"0" * 1024 * 1024 * 4 + sock.send(buf) + sock_wait_drain(sock) + qstat_new = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + + # Check that at least 90% of the data was sent as LSO packets. + # System noise may cause false negatives. Also header overheads + # will add up to 5% of extra packes... The check is best effort. + total_lso_wire = len(buf) * 0.90 // cfg.dev["mtu"] + total_lso_super = len(buf) * 0.90 // cfg.dev["tso_max_size"] + + # Make sure we have order of magnitude more LSO packets than + # retransmits, in case TCP retransmitted all the LSO packets. + ksft_lt(tcp_sock_get_retrans(sock), total_lso_wire / 4) + sock.close() + + if should_lso: + if cfg.have_stat_super_count: + ksft_ge(qstat_new['tx-hw-gso-packets'] - + qstat_old['tx-hw-gso-packets'], + total_lso_super, + comment="Number of LSO super-packets with LSO enabled") + if cfg.have_stat_wire_count: + ksft_ge(qstat_new['tx-hw-gso-wire-packets'] - + qstat_old['tx-hw-gso-wire-packets'], + total_lso_wire, + comment="Number of LSO wire-packets with LSO enabled") + else: + if cfg.have_stat_super_count: + ksft_lt(qstat_new['tx-hw-gso-packets'] - + qstat_old['tx-hw-gso-packets'], + 15, comment="Number of LSO super-packets with LSO disabled") + if cfg.have_stat_wire_count: + ksft_lt(qstat_new['tx-hw-gso-wire-packets'] - + qstat_old['tx-hw-gso-wire-packets'], + 500, comment="Number of LSO wire-packets with LSO disabled") + + +def build_tunnel(cfg, outer_ipver, tun_info): + local_v4 = NetDrvEpEnv.nsim_v4_pfx + "1" + local_v6 = NetDrvEpEnv.nsim_v6_pfx + "1" + remote_v4 = NetDrvEpEnv.nsim_v4_pfx + "2" + remote_v6 = NetDrvEpEnv.nsim_v6_pfx + "2" + + local_addr = cfg.addr_v[outer_ipver] + remote_addr = cfg.remote_addr_v[outer_ipver] + + tun_type = tun_info[0] + tun_arg = tun_info[1] + ip(f"link add {tun_type}-ksft type {tun_type} {tun_arg} local {local_addr} remote {remote_addr} dev {cfg.ifname}") + defer(ip, f"link del {tun_type}-ksft") + ip(f"link set dev {tun_type}-ksft up") + ip(f"addr add {local_v4}/24 dev {tun_type}-ksft") + ip(f"addr add {local_v6}/64 dev {tun_type}-ksft") + + ip(f"link add {tun_type}-ksft type {tun_type} {tun_arg} local {remote_addr} remote {local_addr} dev {cfg.remote_ifname}", + host=cfg.remote) + defer(ip, f"link del {tun_type}-ksft", host=cfg.remote) + ip(f"link set dev {tun_type}-ksft up", host=cfg.remote) + ip(f"addr add {remote_v4}/24 dev {tun_type}-ksft", host=cfg.remote) + ip(f"addr add {remote_v6}/64 dev {tun_type}-ksft", host=cfg.remote) + + return remote_v4, remote_v6 + + +def restore_wanted_features(cfg): + features_cmd = "" + for feature in cfg.hw_features: + setting = "on" if feature in cfg.wanted_features else "off" + features_cmd += f" {feature} {setting}" + try: + ethtool(f"-K {cfg.ifname} {features_cmd}") + except Exception as e: + ksft_pr(f"WARNING: failure restoring wanted features: {e}") + + +def test_builder(name, cfg, outer_ipver, feature, tun=None, inner_ipver=None): + """Construct specific tests from the common template.""" + def f(cfg): + cfg.require_ipver(outer_ipver) + defer(restore_wanted_features, cfg) + + if not cfg.have_stat_super_count and \ + not cfg.have_stat_wire_count: + raise KsftSkipEx(f"Device does not support LSO queue stats") + + if feature not in cfg.hw_features: + raise KsftSkipEx(f"Device does not support {feature}") + + ipver = outer_ipver + if tun: + remote_v4, remote_v6 = build_tunnel(cfg, ipver, tun) + ipver = inner_ipver + else: + remote_v4 = cfg.remote_addr_v["4"] + remote_v6 = cfg.remote_addr_v["6"] + + # First test without the feature enabled. + ethtool(f"-K {cfg.ifname} {feature} off") + run_one_stream(cfg, ipver, remote_v4, remote_v6, should_lso=False) + + ethtool(f"-K {cfg.ifname} tx-gso-partial off") + ethtool(f"-K {cfg.ifname} tx-tcp-mangleid-segmentation off") + if feature in cfg.partial_features: + ethtool(f"-K {cfg.ifname} tx-gso-partial on") + if ipver == "4": + ksft_pr("Testing with mangleid enabled") + ethtool(f"-K {cfg.ifname} tx-tcp-mangleid-segmentation on") + + # Full feature enabled. + ethtool(f"-K {cfg.ifname} {feature} on") + run_one_stream(cfg, ipver, remote_v4, remote_v6, should_lso=True) + + f.__name__ = name + ((outer_ipver + "_") if tun else "") + "ipv" + inner_ipver + return f + + +def query_nic_features(cfg) -> None: + """Query and cache the NIC features.""" + cfg.have_stat_super_count = False + cfg.have_stat_wire_count = False + + features = cfg.ethnl.features_get({"header": {"dev-index": cfg.ifindex}}) + + cfg.wanted_features = set() + for f in features["wanted"]["bits"]["bit"]: + cfg.wanted_features.add(f["name"]) + + cfg.hw_features = set() + hw_all_features_cmd = "" + for f in features["hw"]["bits"]["bit"]: + if f.get("value", False): + feature = f["name"] + cfg.hw_features.add(feature) + hw_all_features_cmd += f" {feature} on" + try: + ethtool(f"-K {cfg.ifname} {hw_all_features_cmd}") + except Exception as e: + ksft_pr(f"WARNING: failure enabling all hw features: {e}") + ksft_pr("partial gso feature detection may be impacted") + + # Check which features are supported via GSO partial + cfg.partial_features = set() + if 'tx-gso-partial' in cfg.hw_features: + ethtool(f"-K {cfg.ifname} tx-gso-partial off") + + no_partial = set() + features = cfg.ethnl.features_get({"header": {"dev-index": cfg.ifindex}}) + for f in features["active"]["bits"]["bit"]: + no_partial.add(f["name"]) + cfg.partial_features = cfg.hw_features - no_partial + ethtool(f"-K {cfg.ifname} tx-gso-partial on") + + restore_wanted_features(cfg) + + stats = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True) + if stats: + if 'tx-hw-gso-packets' in stats[0]: + ksft_pr("Detected qstat for LSO super-packets") + cfg.have_stat_super_count = True + if 'tx-hw-gso-wire-packets' in stats[0]: + ksft_pr("Detected qstat for LSO wire-packets") + cfg.have_stat_wire_count = True + + +def main() -> None: + with NetDrvEpEnv(__file__, nsim_test=False) as cfg: + cfg.ethnl = EthtoolFamily() + cfg.netnl = NetdevFamily() + + query_nic_features(cfg) + + test_info = ( + # name, v4/v6 ethtool_feature tun:(type, args, inner ip versions) + ("", "4", "tx-tcp-segmentation", None), + ("", "6", "tx-tcp6-segmentation", None), + ("vxlan", "4", "tx-udp_tnl-segmentation", ("vxlan", "id 100 dstport 4789 noudpcsum", ("4", "6"))), + ("vxlan", "6", "tx-udp_tnl-segmentation", ("vxlan", "id 100 dstport 4789 udp6zerocsumtx udp6zerocsumrx", ("4", "6"))), + ("vxlan_csum", "", "tx-udp_tnl-csum-segmentation", ("vxlan", "id 100 dstport 4789 udpcsum", ("4", "6"))), + ("gre", "4", "tx-gre-segmentation", ("gre", "", ("4", "6"))), + ("gre", "6", "tx-gre-segmentation", ("ip6gre","", ("4", "6"))), + ) + + cases = [] + for outer_ipver in ["4", "6"]: + for info in test_info: + # Skip if test which only works for a specific IP version + if info[1] and outer_ipver != info[1]: + continue + + if info[3]: + cases += [ + test_builder(info[0], cfg, outer_ipver, info[2], info[3], inner_ipver) + for inner_ipver in info[3][2] + ] + else: + cases.append(test_builder(info[0], cfg, outer_ipver, info[2], None, outer_ipver)) + + ksft_run(cases=cases, args=(cfg, )) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/hw/xsk_reconfig.py b/tools/testing/selftests/drivers/net/hw/xsk_reconfig.py new file mode 100755 index 000000000000..d19d1d518208 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/xsk_reconfig.py @@ -0,0 +1,60 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +# This is intended to be run on a virtio-net guest interface. +# The test binds the XDP socket to the interface without setting +# the fill ring to trigger delayed refill_work. This helps to +# make it easier to reproduce the deadlock when XDP program, +# XDP socket bind/unbind, rx ring resize race with refill_work on +# the buggy kernel. +# +# The Qemu command to setup virtio-net +# -netdev tap,id=hostnet1,vhost=on,script=no,downscript=no +# -device virtio-net-pci,netdev=hostnet1,iommu_platform=on,disable-legacy=on + +from lib.py import ksft_exit, ksft_run +from lib.py import KsftSkipEx, KsftFailEx +from lib.py import NetDrvEnv +from lib.py import bkg, ip, cmd, ethtool +import time + +def _get_rx_ring_entries(cfg): + output = ethtool(f"-g {cfg.ifname}", json=True) + return output[0]["rx"] + +def setup_xsk(cfg, xdp_queue_id = 0) -> bkg: + # Probe for support + xdp = cmd(f'{cfg.net_lib_dir / "xdp_helper"} - -', fail=False) + if xdp.ret == 255: + raise KsftSkipEx('AF_XDP unsupported') + elif xdp.ret > 0: + raise KsftFailEx('unable to create AF_XDP socket') + + try: + return bkg(f'{cfg.net_lib_dir / "xdp_helper"} {cfg.ifindex} ' \ + '{xdp_queue_id} -z', ksft_wait=3) + except: + raise KsftSkipEx('Failed to bind XDP socket in zerocopy.\n' \ + 'Please consider adding iommu_platform=on ' \ + 'when setting up virtio-net-pci') + +def check_xdp_bind(cfg): + with setup_xsk(cfg): + ip(f"link set dev %s xdp obj %s sec xdp" % + (cfg.ifname, cfg.net_lib_dir / "xdp_dummy.bpf.o")) + ip(f"link set dev %s xdp off" % cfg.ifname) + +def check_rx_resize(cfg): + with setup_xsk(cfg): + rx_ring = _get_rx_ring_entries(cfg) + ethtool(f"-G %s rx %d" % (cfg.ifname, rx_ring // 2)) + ethtool(f"-G %s rx %d" % (cfg.ifname, rx_ring)) + +def main(): + with NetDrvEnv(__file__, nsim_test=False) as cfg: + ksft_run([check_xdp_bind, check_rx_resize], + args=(cfg, )) + ksft_exit() + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/lib/py/__init__.py b/tools/testing/selftests/drivers/net/lib/py/__init__.py index 401e70f7f136..8b75faa9af6d 100644 --- a/tools/testing/selftests/drivers/net/lib/py/__init__.py +++ b/tools/testing/selftests/drivers/net/lib/py/__init__.py @@ -1,5 +1,13 @@ # SPDX-License-Identifier: GPL-2.0 +""" +Driver test environment. +NetDrvEnv and NetDrvEpEnv are the main environment classes. +Former is for local host only tests, latter creates / connects +to a remote endpoint. See NIPA wiki for more information about +running and writing driver tests. +""" + import sys from pathlib import Path @@ -7,13 +15,41 @@ KSFT_DIR = (Path(__file__).parent / "../../../..").resolve() try: sys.path.append(KSFT_DIR.as_posix()) - from net.lib.py import * + + # Import one by one to avoid pylint false positives + from net.lib.py import NetNS, NetNSEnter, NetdevSimDev + from net.lib.py import EthtoolFamily, NetdevFamily, NetshaperFamily, \ + NlError, RtnlFamily, DevlinkFamily, PSPFamily + from net.lib.py import CmdExitFailure + from net.lib.py import bkg, cmd, bpftool, bpftrace, defer, ethtool, \ + fd_read_timeout, ip, rand_port, wait_port_listen, wait_file + from net.lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx + from net.lib.py import ksft_disruptive, ksft_exit, ksft_pr, ksft_run, \ + ksft_setup, ksft_variants, KsftNamedVariant + from net.lib.py import ksft_eq, ksft_ge, ksft_in, ksft_is, ksft_lt, \ + ksft_ne, ksft_not_in, ksft_raises, ksft_true, ksft_gt, ksft_not_none + + __all__ = ["NetNS", "NetNSEnter", "NetdevSimDev", + "EthtoolFamily", "NetdevFamily", "NetshaperFamily", + "NlError", "RtnlFamily", "DevlinkFamily", "PSPFamily", + "CmdExitFailure", + "bkg", "cmd", "bpftool", "bpftrace", "defer", "ethtool", + "fd_read_timeout", "ip", "rand_port", + "wait_port_listen", "wait_file", + "KsftSkipEx", "KsftFailEx", "KsftXfailEx", + "ksft_disruptive", "ksft_exit", "ksft_pr", "ksft_run", + "ksft_setup", "ksft_variants", "KsftNamedVariant", + "ksft_eq", "ksft_ge", "ksft_in", "ksft_is", "ksft_lt", + "ksft_ne", "ksft_not_in", "ksft_raises", "ksft_true", "ksft_gt", + "ksft_not_none", "ksft_not_none"] + + from .env import NetDrvEnv, NetDrvEpEnv + from .load import GenerateTraffic, Iperf3Runner + from .remote import Remote + + __all__ += ["NetDrvEnv", "NetDrvEpEnv", "GenerateTraffic", "Remote", + "Iperf3Runner"] except ModuleNotFoundError as e: - ksft_pr("Failed importing `net` library from kernel sources") - ksft_pr(str(e)) - ktap_result(True, comment="SKIP") + print("Failed importing `net` library from kernel sources") + print(str(e)) sys.exit(4) - -from .env import * -from .load import * -from .remote import Remote diff --git a/tools/testing/selftests/drivers/net/lib/py/env.py b/tools/testing/selftests/drivers/net/lib/py/env.py index a5e800b8f103..8b644fd84ff2 100644 --- a/tools/testing/selftests/drivers/net/lib/py/env.py +++ b/tools/testing/selftests/drivers/net/lib/py/env.py @@ -4,53 +4,60 @@ import os import time from pathlib import Path from lib.py import KsftSkipEx, KsftXfailEx -from lib.py import cmd, ethtool, ip +from lib.py import ksft_setup, wait_file +from lib.py import cmd, ethtool, ip, CmdExitFailure from lib.py import NetNS, NetdevSimDev from .remote import Remote -def _load_env_file(src_path): - env = os.environ.copy() - - src_dir = Path(src_path).parent.resolve() - if not (src_dir / "net.config").exists(): - return env - - with open((src_dir / "net.config").as_posix(), 'r') as fp: - for line in fp.readlines(): - full_file = line - # Strip comments - pos = line.find("#") - if pos >= 0: - line = line[:pos] - line = line.strip() - if not line: - continue - pair = line.split('=', maxsplit=1) - if len(pair) != 2: - raise Exception("Can't parse configuration line:", full_file) - env[pair[0]] = pair[1] - return env - - -class NetDrvEnv: - """ - Class for a single NIC / host env, with no remote end +class NetDrvEnvBase: """ - def __init__(self, src_path, **kwargs): - self._ns = None + Base class for a NIC / host environments - self.env = _load_env_file(src_path) + Attributes: + test_dir: Path to the source directory of the test + net_lib_dir: Path to the net/lib directory + """ + def __init__(self, src_path): + self.src_path = Path(src_path) + self.test_dir = self.src_path.parent.resolve() + self.net_lib_dir = (Path(__file__).parent / "../../../../net/lib").resolve() + + self.env = self._load_env_file() + + # Following attrs must be set be inheriting classes + self.dev = None + + def _load_env_file(self): + env = os.environ.copy() + + src_dir = Path(self.src_path).parent.resolve() + if not (src_dir / "net.config").exists(): + return ksft_setup(env) + + with open((src_dir / "net.config").as_posix(), 'r') as fp: + for line in fp.readlines(): + full_file = line + # Strip comments + pos = line.find("#") + if pos >= 0: + line = line[:pos] + line = line.strip() + if not line: + continue + pair = line.split('=', maxsplit=1) + if len(pair) != 2: + raise Exception("Can't parse configuration line:", full_file) + env[pair[0]] = pair[1] + return ksft_setup(env) - if 'NETIF' in self.env: - self.dev = ip("link show dev " + self.env['NETIF'], json=True)[0] - else: - self._ns = NetdevSimDev(**kwargs) - self.dev = self._ns.nsims[0].dev - self.ifindex = self.dev['ifindex'] + def __del__(self): + pass def __enter__(self): ip(f"link set dev {self.dev['ifname']} up") + wait_file(f"/sys/class/net/{self.dev['ifname']}/carrier", + lambda x: x.strip() == "1") return self @@ -60,13 +67,37 @@ class NetDrvEnv: """ self.__del__() + +class NetDrvEnv(NetDrvEnvBase): + """ + Class for a single NIC / host env, with no remote end + """ + def __init__(self, src_path, nsim_test=None, **kwargs): + super().__init__(src_path) + + self._ns = None + + if 'NETIF' in self.env: + if nsim_test is True: + raise KsftXfailEx("Test only works on netdevsim") + + self.dev = ip("-d link show dev " + self.env['NETIF'], json=True)[0] + else: + if nsim_test is False: + raise KsftXfailEx("Test does not work on netdevsim") + + self._ns = NetdevSimDev(**kwargs) + self.dev = self._ns.nsims[0].dev + self.ifname = self.dev['ifname'] + self.ifindex = self.dev['ifindex'] + def __del__(self): if self._ns: self._ns.remove() self._ns = None -class NetDrvEpEnv: +class NetDrvEpEnv(NetDrvEnvBase): """ Class for an environment with a local device and "remote endpoint" which can be used to send traffic in. @@ -80,8 +111,7 @@ class NetDrvEpEnv: nsim_v6_pfx = "2001:db8::" def __init__(self, src_path, nsim_test=None): - - self.env = _load_env_file(src_path) + super().__init__(src_path) self._stats_settle_time = None @@ -92,17 +122,20 @@ class NetDrvEpEnv: self._ns = None self._ns_peer = None + self.addr_v = { "4": None, "6": None } + self.remote_addr_v = { "4": None, "6": None } + if "NETIF" in self.env: if nsim_test is True: raise KsftXfailEx("Test only works on netdevsim") self._check_env() - self.dev = ip("link show dev " + self.env['NETIF'], json=True)[0] + self.dev = ip("-d link show dev " + self.env['NETIF'], json=True)[0] - self.v4 = self.env.get("LOCAL_V4") - self.v6 = self.env.get("LOCAL_V6") - self.remote_v4 = self.env.get("REMOTE_V4") - self.remote_v6 = self.env.get("REMOTE_V6") + self.addr_v["4"] = self.env.get("LOCAL_V4") + self.addr_v["6"] = self.env.get("LOCAL_V6") + self.remote_addr_v["4"] = self.env.get("REMOTE_V4") + self.remote_addr_v["6"] = self.env.get("REMOTE_V6") kind = self.env["REMOTE_TYPE"] args = self.env["REMOTE_ARGS"] else: @@ -113,26 +146,31 @@ class NetDrvEpEnv: self.dev = self._ns.nsims[0].dev - self.v4 = self.nsim_v4_pfx + "1" - self.v6 = self.nsim_v6_pfx + "1" - self.remote_v4 = self.nsim_v4_pfx + "2" - self.remote_v6 = self.nsim_v6_pfx + "2" + self.addr_v["4"] = self.nsim_v4_pfx + "1" + self.addr_v["6"] = self.nsim_v6_pfx + "1" + self.remote_addr_v["4"] = self.nsim_v4_pfx + "2" + self.remote_addr_v["6"] = self.nsim_v6_pfx + "2" kind = "netns" args = self._netns.name self.remote = Remote(kind, args, src_path) - self.addr = self.v6 if self.v6 else self.v4 - self.remote_addr = self.remote_v6 if self.remote_v6 else self.remote_v4 + self.addr_ipver = "6" if self.addr_v["6"] else "4" + self.addr = self.addr_v[self.addr_ipver] + self.remote_addr = self.remote_addr_v[self.addr_ipver] - self.addr_ipver = "6" if self.v6 else "4" # Bracketed addresses, some commands need IPv6 to be inside [] - self.baddr = f"[{self.v6}]" if self.v6 else self.v4 - self.remote_baddr = f"[{self.remote_v6}]" if self.remote_v6 else self.remote_v4 + self.baddr = f"[{self.addr_v['6']}]" if self.addr_v["6"] else self.addr_v["4"] + self.remote_baddr = f"[{self.remote_addr_v['6']}]" if self.remote_addr_v["6"] else self.remote_addr_v["4"] self.ifname = self.dev['ifname'] self.ifindex = self.dev['ifindex'] + # resolve remote interface name + self.remote_ifname = self.resolve_remote_ifc() + self.remote_dev = ip("-d link show dev " + self.remote_ifname, + host=self.remote, json=True)[0] + self._required_cmd = {} def create_local(self): @@ -179,14 +217,17 @@ class NetDrvEpEnv: raise Exception("Invalid environment, missing configuration:", missing, "Please see tools/testing/selftests/drivers/net/README.rst") - def __enter__(self): - return self - - def __exit__(self, ex_type, ex_value, ex_tb): - """ - __exit__ gets called at the end of a "with" block. - """ - self.__del__() + def resolve_remote_ifc(self): + v4 = v6 = None + if self.remote_addr_v["4"]: + v4 = ip("addr show to " + self.remote_addr_v["4"], json=True, host=self.remote) + if self.remote_addr_v["6"]: + v6 = ip("addr show to " + self.remote_addr_v["6"], json=True, host=self.remote) + if v4 and v6 and v4[0]["ifname"] != v6[0]["ifname"]: + raise Exception("Can't resolve remote interface name, v4 and v6 don't match") + if (v4 and len(v4) > 1) or (v6 and len(v6) > 1): + raise Exception("Can't resolve remote interface name, multiple interfaces match") + return v6[0]["ifname"] if v6 else v4[0]["ifname"] def __del__(self): if self._ns: @@ -202,13 +243,13 @@ class NetDrvEpEnv: del self.remote self.remote = None - def require_v4(self): - if not self.v4 or not self.remote_v4: - raise KsftSkipEx("Test requires IPv4 connectivity") + def require_ipver(self, ipver): + if not self.addr_v[ipver] or not self.remote_addr_v[ipver]: + raise KsftSkipEx(f"Test requires IPv{ipver} connectivity") - def require_v6(self): - if not self.v6 or not self.remote_v6: - raise KsftSkipEx("Test requires IPv6 connectivity") + def require_nsim(self): + if self._ns is None: + raise KsftXfailEx("Test only works on netdevsim") def _require_cmd(self, comm, key, host=None): cached = self._required_cmd.get(comm, {}) @@ -223,7 +264,7 @@ class NetDrvEpEnv: if not self._require_cmd(comm, "local"): raise KsftSkipEx("Test requires command: " + comm) if remote: - if not self._require_cmd(comm, "remote"): + if not self._require_cmd(comm, "remote", host=self.remote): raise KsftSkipEx("Test requires (remote) command: " + comm) def wait_hw_stats_settle(self): @@ -233,7 +274,12 @@ class NetDrvEpEnv: Good drivers will tell us via ethtool what their sync period is. """ if self._stats_settle_time is None: - data = ethtool("-c " + self.ifname, json=True)[0] + data = {} + try: + data = ethtool("-c " + self.ifname, json=True)[0] + except CmdExitFailure as e: + if "Operation not supported" not in e.cmd.stderr: + raise self._stats_settle_time = 0.025 + \ data.get('stats-block-usecs', 0) / 1000 / 1000 diff --git a/tools/testing/selftests/drivers/net/lib/py/load.py b/tools/testing/selftests/drivers/net/lib/py/load.py index d9c10613ae67..f181fa2d38fc 100644 --- a/tools/testing/selftests/drivers/net/lib/py/load.py +++ b/tools/testing/selftests/drivers/net/lib/py/load.py @@ -1,22 +1,90 @@ # SPDX-License-Identifier: GPL-2.0 +import re import time +import json from lib.py import ksft_pr, cmd, ip, rand_port, wait_port_listen -class GenerateTraffic: - def __init__(self, env, port=None): - env.require_cmd("iperf3", remote=True) +class Iperf3Runner: + """ + Sets up and runs iperf3 traffic. + """ + def __init__(self, env, port=None, server_ip=None, client_ip=None): + env.require_cmd("iperf3", local=True, remote=True) self.env = env + self.port = rand_port() if port is None else port + self.server_ip = server_ip + self.client_ip = client_ip + + def _build_server(self): + cmdline = f"iperf3 -s -1 -p {self.port}" + if self.server_ip: + cmdline += f" -B {self.server_ip}" + return cmdline + + def _build_client(self, streams, duration, reverse): + host = self.env.addr if self.server_ip is None else self.server_ip + cmdline = f"iperf3 -c {host} -p {self.port} -P {streams} -t {duration} -J" + if self.client_ip: + cmdline += f" -B {self.client_ip}" + if reverse: + cmdline += " --reverse" + return cmdline - if port is None: - port = rand_port() - self._iperf_server = cmd(f"iperf3 -s -1 -p {port}", background=True) - wait_port_listen(port) + def start_server(self): + """ + Starts an iperf3 server with optional bind IP. + """ + cmdline = self._build_server() + proc = cmd(cmdline, background=True) + wait_port_listen(self.port) time.sleep(0.1) - self._iperf_client = cmd(f"iperf3 -c {env.addr} -P 16 -p {port} -t 86400", - background=True, host=env.remote) + return proc + + def start_client(self, background=False, streams=1, duration=10, reverse=False): + """ + Starts the iperf3 client with the configured options. + """ + cmdline = self._build_client(streams, duration, reverse) + return cmd(cmdline, background=background, host=self.env.remote) + + def measure_bandwidth(self, reverse=False): + """ + Runs an iperf3 measurement and returns the average bandwidth (Gbps). + Discards the first and last few reporting intervals and uses only the + middle part of the run where throughput is typically stable. + """ + self.start_server() + result = self.start_client(duration=10, reverse=reverse) + + if result.ret != 0: + raise RuntimeError("iperf3 failed to run successfully") + try: + out = json.loads(result.stdout) + except json.JSONDecodeError as exc: + raise ValueError("Failed to parse iperf3 JSON output") from exc + + intervals = out.get("intervals", []) + samples = [i["sum"]["bits_per_second"] / 1e9 for i in intervals] + if len(samples) < 10: + raise ValueError(f"iperf3 returned too few intervals: {len(samples)}") + # Discard potentially unstable first and last 3 seconds. + stable = samples[3:-3] + + avg = sum(stable) / len(stable) + + return avg + + +class GenerateTraffic: + def __init__(self, env, port=None): + self.env = env + self.runner = Iperf3Runner(env, port) + + self._iperf_server = self.runner.start_server() + self._iperf_client = self.runner.start_client(background=True, streams=16, duration=86400) # Wait for traffic to ramp up if not self._wait_pkts(pps=1000): @@ -56,3 +124,16 @@ class GenerateTraffic: ksft_pr(">> Server:") ksft_pr(self._iperf_server.stdout) ksft_pr(self._iperf_server.stderr) + self._wait_client_stopped() + + def _wait_client_stopped(self, sleep=0.005, timeout=5): + end = time.monotonic() + timeout + + live_port_pattern = re.compile(fr":{self.runner.port:04X} 0[^6] ") + + while time.monotonic() < end: + data = cmd("cat /proc/net/tcp*", host=self.env.remote).stdout + if not live_port_pattern.search(data): + return + time.sleep(sleep) + raise Exception(f"Waiting for client to stop timed out after {timeout}s") diff --git a/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh b/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh new file mode 100644 index 000000000000..ae8abff4be40 --- /dev/null +++ b/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh @@ -0,0 +1,419 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: GPL-2.0 + +# This file contains functions and helpers to support the netconsole +# selftests +# +# Author: Breno Leitao <leitao@debian.org> + +set -euo pipefail + +LIBDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") + +SRCIF="" # to be populated later +SRCIP="" # to be populated later +SRCIP4="192.0.2.1" +SRCIP6="fc00::1" +DSTIF="" # to be populated later +DSTIP="" # to be populated later +DSTIP4="192.0.2.2" +DSTIP6="fc00::2" + +PORT="6666" +MSG="netconsole selftest" +USERDATA_KEY="key" +USERDATA_VALUE="value" +TARGET=$(mktemp -u netcons_XXXXX) +DEFAULT_PRINTK_VALUES=$(cat /proc/sys/kernel/printk) +NETCONS_CONFIGFS="/sys/kernel/config/netconsole" +NETCONS_PATH="${NETCONS_CONFIGFS}"/"${TARGET}" +# NAMESPACE will be populated by setup_ns with a random value +NAMESPACE="" + +# IDs for netdevsim. We either use NSIM_DEV_{1,2}_ID for standard test +# or NSIM_BOND_{T,R}X_{1,2} for the bonding tests. Not both at the +# same time. +NSIM_DEV_1_ID=$((256 + RANDOM % 256)) +NSIM_DEV_2_ID=$((512 + RANDOM % 256)) +NSIM_BOND_TX_1=$((768 + RANDOM % 256)) +NSIM_BOND_TX_2=$((1024 + RANDOM % 256)) +NSIM_BOND_RX_1=$((1280 + RANDOM % 256)) +NSIM_BOND_RX_2=$((1536 + RANDOM % 256)) +NSIM_DEV_SYS_NEW="/sys/bus/netdevsim/new_device" +NSIM_DEV_SYS_LINK="/sys/bus/netdevsim/link_device" + +# Used to create and delete namespaces +source "${LIBDIR}"/../../../../net/lib.sh + +# Create netdevsim interfaces +create_ifaces() { + echo "$NSIM_DEV_2_ID" > "$NSIM_DEV_SYS_NEW" + echo "$NSIM_DEV_1_ID" > "$NSIM_DEV_SYS_NEW" + udevadm settle 2> /dev/null || true + + local NSIM1=/sys/bus/netdevsim/devices/netdevsim"$NSIM_DEV_1_ID" + local NSIM2=/sys/bus/netdevsim/devices/netdevsim"$NSIM_DEV_2_ID" + + # These are global variables + SRCIF=$(find "$NSIM1"/net -maxdepth 1 -type d ! \ + -path "$NSIM1"/net -exec basename {} \;) + DSTIF=$(find "$NSIM2"/net -maxdepth 1 -type d ! \ + -path "$NSIM2"/net -exec basename {} \;) +} + +link_ifaces() { + local NSIM_DEV_SYS_LINK="/sys/bus/netdevsim/link_device" + local SRCIF_IFIDX=$(cat /sys/class/net/"$SRCIF"/ifindex) + local DSTIF_IFIDX=$(cat /sys/class/net/"$DSTIF"/ifindex) + + exec {NAMESPACE_FD}</var/run/netns/"${NAMESPACE}" + exec {INITNS_FD}</proc/self/ns/net + + # Bind the dst interface to namespace + ip link set "${DSTIF}" netns "${NAMESPACE}" + + # Linking one device to the other one (on the other namespace} + if ! echo "${INITNS_FD}:$SRCIF_IFIDX $NAMESPACE_FD:$DSTIF_IFIDX" > $NSIM_DEV_SYS_LINK + then + echo "linking netdevsim1 with netdevsim2 should succeed" + cleanup + exit "${ksft_skip}" + fi +} + +function configure_ip() { + # Configure the IPs for both interfaces + ip netns exec "${NAMESPACE}" ip addr add "${DSTIP}"/24 dev "${DSTIF}" + ip netns exec "${NAMESPACE}" ip link set "${DSTIF}" up + + ip addr add "${SRCIP}"/24 dev "${SRCIF}" + ip link set "${SRCIF}" up +} + +function select_ipv4_or_ipv6() +{ + local VERSION=${1} + + if [[ "$VERSION" == "ipv6" ]] + then + DSTIP="${DSTIP6}" + SRCIP="${SRCIP6}" + else + DSTIP="${DSTIP4}" + SRCIP="${SRCIP4}" + fi +} + +function set_network() { + local IP_VERSION=${1:-"ipv4"} + + # setup_ns function is coming from lib.sh + setup_ns NAMESPACE + + # Create both interfaces, and assign the destination to a different + # namespace + create_ifaces + + # Link both interfaces back to back + link_ifaces + + select_ipv4_or_ipv6 "${IP_VERSION}" + configure_ip +} + +function _create_dynamic_target() { + local FORMAT="${1:?FORMAT parameter required}" + local NCPATH="${2:?NCPATH parameter required}" + + DSTMAC=$(ip netns exec "${NAMESPACE}" \ + ip link show "${DSTIF}" | awk '/ether/ {print $2}') + + # Create a dynamic target + mkdir "${NCPATH}" + + echo "${DSTIP}" > "${NCPATH}"/remote_ip + echo "${SRCIP}" > "${NCPATH}"/local_ip + echo "${DSTMAC}" > "${NCPATH}"/remote_mac + echo "${SRCIF}" > "${NCPATH}"/dev_name + + if [ "${FORMAT}" == "basic" ] + then + # Basic target does not support release + echo 0 > "${NCPATH}"/release + echo 0 > "${NCPATH}"/extended + elif [ "${FORMAT}" == "extended" ] + then + echo 1 > "${NCPATH}"/extended + fi +} + +function create_dynamic_target() { + local FORMAT=${1:-"extended"} + local NCPATH=${2:-"$NETCONS_PATH"} + _create_dynamic_target "${FORMAT}" "${NCPATH}" + + echo 1 > "${NCPATH}"/enabled + + # This will make sure that the kernel was able to + # load the netconsole driver configuration. The console message + # gets more organized/sequential as well. + sleep 1 +} + +# Generate the command line argument for netconsole following: +# netconsole=[+][src-port]@[src-ip]/[<dev>],[tgt-port]@<tgt-ip>/[tgt-macaddr] +function create_cmdline_str() { + local BINDMODE=${1:-"ifname"} + if [ "${BINDMODE}" == "ifname" ] + then + SRCDEV=${SRCIF} + else + SRCDEV=$(mac_get "${SRCIF}") + fi + + DSTMAC=$(ip netns exec "${NAMESPACE}" \ + ip link show "${DSTIF}" | awk '/ether/ {print $2}') + SRCPORT="1514" + TGTPORT="6666" + + echo "netconsole=\"+${SRCPORT}@${SRCIP}/${SRCDEV},${TGTPORT}@${DSTIP}/${DSTMAC}\"" +} + +# Do not append the release to the header of the message +function disable_release_append() { + echo 0 > "${NETCONS_PATH}"/enabled + echo 0 > "${NETCONS_PATH}"/release + echo 1 > "${NETCONS_PATH}"/enabled +} + +function do_cleanup() { + local NSIM_DEV_SYS_DEL="/sys/bus/netdevsim/del_device" + + # Delete netdevsim devices + echo "$NSIM_DEV_2_ID" > "$NSIM_DEV_SYS_DEL" + echo "$NSIM_DEV_1_ID" > "$NSIM_DEV_SYS_DEL" + + # this is coming from lib.sh + cleanup_all_ns + + # Restoring printk configurations + echo "${DEFAULT_PRINTK_VALUES}" > /proc/sys/kernel/printk +} + +function cleanup_netcons() { + # delete netconsole dynamic reconfiguration + # do not fail if the target is already disabled + if [[ ! -d "${NETCONS_PATH}" ]] + then + # in some cases this is called before netcons path is created + return + fi + if [[ $(cat "${NETCONS_PATH}"/enabled) != 0 ]] + then + echo 0 > "${NETCONS_PATH}"/enabled || true + fi + # Remove all the keys that got created during the selftest + find "${NETCONS_PATH}/userdata/" -mindepth 1 -type d -delete + # Remove the configfs entry + rmdir "${NETCONS_PATH}" +} + +function cleanup() { + cleanup_netcons + do_cleanup +} + +function set_user_data() { + if [[ ! -d "${NETCONS_PATH}""/userdata" ]] + then + echo "Userdata path not available in ${NETCONS_PATH}/userdata" + exit "${ksft_skip}" + fi + + KEY_PATH="${NETCONS_PATH}/userdata/${USERDATA_KEY}" + mkdir -p "${KEY_PATH}" + VALUE_PATH="${KEY_PATH}""/value" + echo "${USERDATA_VALUE}" > "${VALUE_PATH}" +} + +function listen_port_and_save_to() { + local OUTPUT=${1} + local IPVERSION=${2:-"ipv4"} + + if [ "${IPVERSION}" == "ipv4" ] + then + SOCAT_MODE="UDP-LISTEN" + else + SOCAT_MODE="UDP6-LISTEN" + fi + + # Just wait for 2 seconds + timeout 2 ip netns exec "${NAMESPACE}" \ + socat "${SOCAT_MODE}":"${PORT}",fork "${OUTPUT}" 2> /dev/null +} + +# Only validate that the message arrived properly +function validate_msg() { + local TMPFILENAME="$1" + + # Check if the file exists + if [ ! -f "$TMPFILENAME" ]; then + echo "FAIL: File was not generated." >&2 + exit "${ksft_fail}" + fi + + if ! grep -q "${MSG}" "${TMPFILENAME}"; then + echo "FAIL: ${MSG} not found in ${TMPFILENAME}" >&2 + cat "${TMPFILENAME}" >&2 + exit "${ksft_fail}" + fi +} + +# Validate the message and userdata +function validate_result() { + local TMPFILENAME="$1" + + # TMPFILENAME will contain something like: + # 6.11.1-0_fbk0_rc13_509_g30d75cea12f7,13,1822,115075213798,-;netconsole selftest: netcons_gtJHM + # key=value + + validate_msg "${TMPFILENAME}" + + # userdata is not supported on basic format target, + # thus, do not validate it. + if [ "${FORMAT}" != "basic" ]; + then + if ! grep -q "${USERDATA_KEY}=${USERDATA_VALUE}" "${TMPFILENAME}"; then + echo "FAIL: ${USERDATA_KEY}=${USERDATA_VALUE} not found in ${TMPFILENAME}" >&2 + cat "${TMPFILENAME}" >&2 + exit "${ksft_fail}" + fi + fi + + # Delete the file once it is validated, otherwise keep it + # for debugging purposes + rm "${TMPFILENAME}" +} + +function check_for_dependencies() { + if [ "$(id -u)" -ne 0 ]; then + echo "This test must be run as root" >&2 + exit "${ksft_skip}" + fi + + if ! which socat > /dev/null ; then + echo "SKIP: socat(1) is not available" >&2 + exit "${ksft_skip}" + fi + + if ! which ip > /dev/null ; then + echo "SKIP: ip(1) is not available" >&2 + exit "${ksft_skip}" + fi + + if ! which udevadm > /dev/null ; then + echo "SKIP: udevadm(1) is not available" >&2 + exit "${ksft_skip}" + fi + + if [ ! -f /proc/net/if_inet6 ]; then + echo "SKIP: IPv6 not configured. Check if CONFIG_IPV6 is enabled" >&2 + exit "${ksft_skip}" + fi + + if [ ! -f "${NSIM_DEV_SYS_NEW}" ]; then + echo "SKIP: file ${NSIM_DEV_SYS_NEW} does not exist. Check if CONFIG_NETDEVSIM is enabled" >&2 + exit "${ksft_skip}" + fi + + if [ ! -d "${NETCONS_CONFIGFS}" ]; then + echo "SKIP: directory ${NETCONS_CONFIGFS} does not exist. Check if NETCONSOLE_DYNAMIC is enabled" >&2 + exit "${ksft_skip}" + fi + + if ip link show "${DSTIF}" 2> /dev/null; then + echo "SKIP: interface ${DSTIF} exists in the system. Not overwriting it." >&2 + exit "${ksft_skip}" + fi + + REGEXP4="inet.*(${SRCIP4}|${DSTIP4})" + REGEXP6="inet.*(${SRCIP6}|${DSTIP6})" + if ip addr list | grep -E "${REGEXP4}" 2> /dev/null; then + echo "SKIP: IPv4s already in use. Skipping it" >&2 + exit "${ksft_skip}" + fi + + if ip addr list | grep -E "${REGEXP6}" 2> /dev/null; then + echo "SKIP: IPv6s already in use. Skipping it" >&2 + exit "${ksft_skip}" + fi +} + +function check_for_taskset() { + if ! which taskset > /dev/null ; then + echo "SKIP: taskset(1) is not available" >&2 + exit "${ksft_skip}" + fi +} + +# This is necessary if running multiple tests in a row +function pkill_socat() { + PROCESS_NAME4="socat UDP-LISTEN:6666,fork ${OUTPUT_FILE}" + PROCESS_NAME6="socat UDP6-LISTEN:6666,fork ${OUTPUT_FILE}" + # socat runs under timeout(1), kill it if it is still alive + # do not fail if socat doesn't exist anymore + set +e + pkill -f "${PROCESS_NAME4}" + pkill -f "${PROCESS_NAME6}" + set -e +} + +# Check if netconsole was compiled as a module, otherwise exit +function check_netconsole_module() { + if modinfo netconsole | grep filename: | grep -q builtin + then + echo "SKIP: netconsole should be compiled as a module" >&2 + exit "${ksft_skip}" + fi +} + +# A wrapper to translate protocol version to udp version +function wait_for_port() { + local NAMESPACE=${1} + local PORT=${2} + IP_VERSION=${3} + + if [ "${IP_VERSION}" == "ipv6" ] + then + PROTOCOL="udp6" + else + PROTOCOL="udp" + fi + + wait_local_port_listen "${NAMESPACE}" "${PORT}" "${PROTOCOL}" + # even after the port is open, let's wait 1 second before writing + # otherwise the packet could be missed, and the test will fail. Happens + # more frequently on IPv6 + sleep 1 +} + +# Clean up netdevsim ifaces created for bonding test +function cleanup_bond_nsim() { + ip -n "${TXNS}" \ + link delete "${BOND_TX_MAIN_IF}" type bond || true + ip -n "${RXNS}" \ + link delete "${BOND_RX_MAIN_IF}" type bond || true + + cleanup_netdevsim "$NSIM_BOND_TX_1" + cleanup_netdevsim "$NSIM_BOND_TX_2" + cleanup_netdevsim "$NSIM_BOND_RX_1" + cleanup_netdevsim "$NSIM_BOND_RX_2" +} + +# cleanup tests that use bonding interfaces +function cleanup_bond() { + cleanup_netcons + cleanup_bond_nsim + cleanup_all_ns + ip link delete "${VETH0}" || true +} diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap.sh index 89b55e946eed..36055279ba92 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap.sh @@ -116,7 +116,7 @@ dev_del_test() log_test "Device delete" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid } trap cleanup EXIT diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_l3_drops.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_l3_drops.sh index 160891dcb4bc..db5806d189bb 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_l3_drops.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_l3_drops.sh @@ -595,7 +595,7 @@ irif_disabled_test() log_test "Ingress RIF disabled" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid ip link set dev $rp1 nomaster __addr_add_del $rp1 add 192.0.2.2/24 2001:db8:1::2/64 ip link del dev br0 type bridge @@ -645,7 +645,7 @@ erif_disabled_test() log_test "Egress RIF disabled" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid __addr_add_del $rp1 add 192.0.2.2/24 2001:db8:1::2/64 ip link del dev br0 type bridge devlink_trap_action_set $trap_name "drop" diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_l3_exceptions.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_l3_exceptions.sh index 190c1b6b5365..5d6d88b600f0 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_l3_exceptions.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_l3_exceptions.sh @@ -202,7 +202,7 @@ mtu_value_is_too_small_test() mtu_restore $rp2 - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid tc filter del dev $h1 ingress protocol ip pref 1 handle 101 flower } @@ -235,7 +235,7 @@ __ttl_value_is_too_small_test() log_test "TTL value is too small: TTL=$ttl_val" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid tc filter del dev $h1 ingress protocol ip pref 1 handle 101 flower } @@ -299,7 +299,7 @@ __mc_reverse_path_forwarding_test() log_test "Multicast reverse path forwarding: $desc" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid tc filter del dev $rp2 egress protocol $proto pref 1 handle 101 flower } @@ -347,7 +347,7 @@ __reject_route_test() log_test "Reject route: $desc" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid ip route del unreachable $unreachable tc filter del dev $h1 ingress protocol $proto pref 1 handle 101 flower } @@ -542,7 +542,7 @@ ipv4_lpm_miss_test() log_test "LPM miss: IPv4" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid vrf_without_routes_destroy } @@ -569,7 +569,7 @@ ipv6_lpm_miss_test() log_test "LPM miss: IPv6" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid vrf_without_routes_destroy } diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh index 0bd5ffc218ac..e212ad8ccef6 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh @@ -44,64 +44,51 @@ source $lib_dir/devlink_lib.sh h1_create() { - simple_if_init $h1 192.0.2.1/24 + adf_simple_if_init $h1 192.0.2.1/24 + mtu_set $h1 10000 + defer mtu_restore $h1 ip -4 route add default vrf v$h1 nexthop via 192.0.2.2 -} - -h1_destroy() -{ - ip -4 route del default vrf v$h1 nexthop via 192.0.2.2 - - mtu_restore $h1 - simple_if_fini $h1 192.0.2.1/24 + defer ip -4 route del default vrf v$h1 nexthop via 192.0.2.2 } h2_create() { - simple_if_init $h2 198.51.100.1/24 + adf_simple_if_init $h2 198.51.100.1/24 + mtu_set $h2 10000 + defer mtu_restore $h2 ip -4 route add default vrf v$h2 nexthop via 198.51.100.2 -} - -h2_destroy() -{ - ip -4 route del default vrf v$h2 nexthop via 198.51.100.2 - - mtu_restore $h2 - simple_if_fini $h2 198.51.100.1/24 + defer ip -4 route del default vrf v$h2 nexthop via 198.51.100.2 } router_create() { ip link set dev $rp1 up + defer ip link set dev $rp1 down + ip link set dev $rp2 up + defer ip link set dev $rp2 down __addr_add_del $rp1 add 192.0.2.2/24 + defer __addr_add_del $rp1 del 192.0.2.2/24 + __addr_add_del $rp2 add 198.51.100.2/24 + defer __addr_add_del $rp2 del 198.51.100.2/24 + mtu_set $rp1 10000 + defer mtu_restore $rp1 + mtu_set $rp2 10000 + defer mtu_restore $rp2 ip -4 route add blackhole 198.51.100.100 + defer ip -4 route del blackhole 198.51.100.100 devlink trap set $DEVLINK_DEV trap blackhole_route action trap -} - -router_destroy() -{ - devlink trap set $DEVLINK_DEV trap blackhole_route action drop - - ip -4 route del blackhole 198.51.100.100 - - mtu_restore $rp2 - mtu_restore $rp1 - __addr_add_del $rp2 del 198.51.100.2/24 - __addr_add_del $rp1 del 192.0.2.2/24 - - ip link set dev $rp2 down - ip link set dev $rp1 down + defer devlink trap set $DEVLINK_DEV trap blackhole_route action drop } setup_prepare() @@ -114,7 +101,10 @@ setup_prepare() rp1_mac=$(mac_get $rp1) - vrf_prepare + # Reload to ensure devlink-trap settings are back to default. + defer devlink_reload + + adf_vrf_prepare h1_create h2_create @@ -122,21 +112,6 @@ setup_prepare() router_create } -cleanup() -{ - pre_cleanup - - router_destroy - - h2_destroy - h1_destroy - - vrf_cleanup - - # Reload to ensure devlink-trap settings are back to default. - devlink_reload -} - rate_limits_test() { RET=0 @@ -214,7 +189,10 @@ __rate_test() # by the policer. Make sure measured received rate is about 1000 pps log_info "=== Tx rate: Highest, Policer rate: 1000 pps ===" + defer_scope_push + start_traffic $h1 192.0.2.1 198.51.100.100 $rp1_mac + defer stop_traffic $! sleep 5 # Take measurements when rate is stable @@ -229,13 +207,16 @@ __rate_test() check_err $? "Expected non-zero policer drop rate, got 0" log_info "Measured policer drop rate of $drop_rate pps" - stop_traffic + defer_scope_pop # Send packets at a rate of 1000 pps and make sure they are not dropped # by the policer log_info "=== Tx rate: 1000 pps, Policer rate: 1000 pps ===" + defer_scope_push + start_traffic $h1 192.0.2.1 198.51.100.100 $rp1_mac -d 1msec + defer stop_traffic $! sleep 5 # Take measurements when rate is stable @@ -244,7 +225,7 @@ __rate_test() check_err $? "Expected zero policer drop rate, got a drop rate of $drop_rate pps" log_info "Measured policer drop rate of $drop_rate pps" - stop_traffic + defer_scope_pop # Unbind the policer and send packets at highest possible rate. Make # sure they are not dropped by the policer and that the measured @@ -253,7 +234,10 @@ __rate_test() devlink trap group set $DEVLINK_DEV group l3_drops nopolicer + defer_scope_push + start_traffic $h1 192.0.2.1 198.51.100.100 $rp1_mac + defer stop_traffic $! rate=$(trap_rate_get) (( rate > 1000 )) @@ -265,7 +249,7 @@ __rate_test() check_err $? "Expected zero policer drop rate, got a drop rate of $drop_rate pps" log_info "Measured policer drop rate of $drop_rate pps" - stop_traffic + defer_scope_pop log_test "Trap policer rate" } diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh index e9a82cae8c9a..4ac1dae92d0f 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh @@ -176,7 +176,7 @@ ecn_decap_test() log_test "$desc: Inner ECN is not ECT and outer is $ecn_desc" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid tc filter del dev $swp1 egress protocol ip pref 1 handle 101 flower } @@ -207,7 +207,7 @@ no_matching_tunnel_test() log_test "$desc" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid tc filter del dev $swp1 egress protocol ip pref 1 handle 101 flower } diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip6.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip6.sh index 878125041fc3..fce885184404 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip6.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip6.sh @@ -176,7 +176,7 @@ ecn_decap_test() log_test "$desc: Inner ECN is not ECT and outer is $ecn_desc" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid tc filter del dev $swp1 egress protocol ipv6 pref 1 handle 101 flower } @@ -207,7 +207,7 @@ no_matching_tunnel_test() log_test "$desc" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid tc filter del dev $swp1 egress protocol ipv6 pref 1 handle 101 flower } diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan.sh index 5f6eb965cfd1..7aca8e5922cf 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan.sh @@ -183,7 +183,7 @@ ecn_decap_test() log_test "$desc: Inner ECN is not ECT and outer is $ecn_desc" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid tc filter del dev $swp1 egress protocol ip pref 1 handle 101 flower } @@ -253,7 +253,7 @@ corrupted_packet_test() log_test "$desc" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid tc filter del dev $swp1 egress protocol ip pref 1 handle 101 flower } diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan_ipv6.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan_ipv6.sh index f6c16cbb6cf7..4599c331240b 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan_ipv6.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_vxlan_ipv6.sh @@ -188,7 +188,7 @@ ecn_decap_test() log_test "$desc: Inner ECN is not ECT and outer is $ecn_desc" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid tc filter del dev $swp1 egress protocol ipv6 pref 1 handle 101 flower } @@ -262,7 +262,7 @@ corrupted_packet_test() log_test "$desc" - kill $mz_pid && wait $mz_pid &> /dev/null + kill_process $mz_pid tc filter del dev $swp1 egress protocol ipv6 pref 1 handle 101 flower } diff --git a/tools/testing/selftests/drivers/net/mlxsw/ethtool_lanes.sh b/tools/testing/selftests/drivers/net/mlxsw/ethtool_lanes.sh index 877cd6df94a1..fe905a7f34b3 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/ethtool_lanes.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/ethtool_lanes.sh @@ -2,6 +2,7 @@ # SPDX-License-Identifier: GPL-2.0 lib_dir=$(dirname $0)/../../../net/forwarding +ethtool_lib_dir=$(dirname $0)/../hw ALL_TESTS=" autoneg @@ -11,7 +12,7 @@ ALL_TESTS=" NUM_NETIFS=2 : ${TIMEOUT:=30000} # ms source $lib_dir/lib.sh -source $lib_dir/ethtool_lib.sh +source $ethtool_lib_dir/ethtool_lib.sh setup_prepare() { diff --git a/tools/testing/selftests/drivers/net/mlxsw/qos_ets_strict.sh b/tools/testing/selftests/drivers/net/mlxsw/qos_ets_strict.sh index fee74f215cec..9ca340c5f3a6 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/qos_ets_strict.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/qos_ets_strict.sh @@ -57,66 +57,60 @@ source qos_lib.sh h1_create() { - simple_if_init $h1 + adf_simple_if_init $h1 + mtu_set $h1 10000 + defer mtu_restore $h1 vlan_create $h1 111 v$h1 192.0.2.33/28 + defer vlan_destroy $h1 111 ip link set dev $h1.111 type vlan egress-qos-map 0:1 } -h1_destroy() -{ - vlan_destroy $h1 111 - - mtu_restore $h1 - simple_if_fini $h1 -} - h2_create() { - simple_if_init $h2 + adf_simple_if_init $h2 + mtu_set $h2 10000 + defer mtu_restore $h2 vlan_create $h2 222 v$h2 192.0.2.65/28 + defer vlan_destroy $h2 222 ip link set dev $h2.222 type vlan egress-qos-map 0:2 } -h2_destroy() -{ - vlan_destroy $h2 222 - - mtu_restore $h2 - simple_if_fini $h2 -} - h3_create() { - simple_if_init $h3 + adf_simple_if_init $h3 + mtu_set $h3 10000 + defer mtu_restore $h3 vlan_create $h3 111 v$h3 192.0.2.34/28 - vlan_create $h3 222 v$h3 192.0.2.66/28 -} - -h3_destroy() -{ - vlan_destroy $h3 222 - vlan_destroy $h3 111 + defer vlan_destroy $h3 111 - mtu_restore $h3 - simple_if_fini $h3 + vlan_create $h3 222 v$h3 192.0.2.66/28 + defer vlan_destroy $h3 222 } switch_create() { ip link set dev $swp1 up + defer ip link set dev $swp1 down + mtu_set $swp1 10000 + defer mtu_restore $swp1 ip link set dev $swp2 up + defer ip link set dev $swp2 down + mtu_set $swp2 10000 + defer mtu_restore $swp2 # prio n -> TC n, strict scheduling lldptool -T -i $swp3 -V ETS-CFG up2tc=0:0,1:1,2:2,3:3,4:4,5:5,6:6,7:7 + defer lldptool -T -i $swp3 -V ETS-CFG up2tc=0:0,1:0,2:0,3:0,4:0,5:0,6:0,7:0 + lldptool -T -i $swp3 -V ETS-CFG tsa=$( )"0:strict,"$( )"1:strict,"$( @@ -129,85 +123,90 @@ switch_create() sleep 1 ip link set dev $swp3 up + defer ip link set dev $swp3 down + mtu_set $swp3 10000 + defer mtu_restore $swp3 + tc qdisc replace dev $swp3 root handle 101: tbf rate 1gbit \ burst 128K limit 1G + defer tc qdisc del dev $swp3 root handle 101: vlan_create $swp1 111 + defer vlan_destroy $swp1 111 + vlan_create $swp2 222 + defer vlan_destroy $swp2 222 + vlan_create $swp3 111 + defer vlan_destroy $swp3 111 + vlan_create $swp3 222 + defer vlan_destroy $swp3 222 ip link add name br111 type bridge vlan_filtering 0 + defer ip link del dev br111 ip link set dev br111 addrgenmode none + ip link set dev br111 up + defer ip link set dev br111 down + ip link set dev $swp1.111 master br111 + defer ip link set dev $swp1.111 nomaster + ip link set dev $swp3.111 master br111 + defer ip link set dev $swp3.111 nomaster ip link add name br222 type bridge vlan_filtering 0 + defer ip link del dev br222 ip link set dev br222 addrgenmode none + ip link set dev br222 up + defer ip link set dev br222 down + ip link set dev $swp2.222 master br222 + defer ip link set dev $swp2.222 nomaster + ip link set dev $swp3.222 master br222 + defer ip link set dev $swp3.222 nomaster # Make sure that ingress quotas are smaller than egress so that there is # room for both streams of traffic to be admitted to shared buffer. devlink_pool_size_thtype_save 0 devlink_pool_size_thtype_set 0 dynamic 10000000 + defer devlink_pool_size_thtype_restore 0 + devlink_pool_size_thtype_save 4 devlink_pool_size_thtype_set 4 dynamic 10000000 + defer devlink_pool_size_thtype_restore 4 devlink_port_pool_th_save $swp1 0 devlink_port_pool_th_set $swp1 0 6 + defer devlink_port_pool_th_restore $swp1 0 + devlink_tc_bind_pool_th_save $swp1 1 ingress devlink_tc_bind_pool_th_set $swp1 1 ingress 0 6 + defer devlink_tc_bind_pool_th_restore $swp1 1 ingress devlink_port_pool_th_save $swp2 0 devlink_port_pool_th_set $swp2 0 6 + defer devlink_port_pool_th_restore $swp2 0 + devlink_tc_bind_pool_th_save $swp2 2 ingress devlink_tc_bind_pool_th_set $swp2 2 ingress 0 6 + defer devlink_tc_bind_pool_th_restore $swp2 2 ingress devlink_tc_bind_pool_th_save $swp3 1 egress devlink_tc_bind_pool_th_set $swp3 1 egress 4 7 + defer devlink_tc_bind_pool_th_restore $swp3 1 egress + devlink_tc_bind_pool_th_save $swp3 2 egress devlink_tc_bind_pool_th_set $swp3 2 egress 4 7 + defer devlink_tc_bind_pool_th_restore $swp3 2 egress + devlink_port_pool_th_save $swp3 4 devlink_port_pool_th_set $swp3 4 7 -} - -switch_destroy() -{ - devlink_port_pool_th_restore $swp3 4 - devlink_tc_bind_pool_th_restore $swp3 2 egress - devlink_tc_bind_pool_th_restore $swp3 1 egress - - devlink_tc_bind_pool_th_restore $swp2 2 ingress - devlink_port_pool_th_restore $swp2 0 - - devlink_tc_bind_pool_th_restore $swp1 1 ingress - devlink_port_pool_th_restore $swp1 0 - - devlink_pool_size_thtype_restore 4 - devlink_pool_size_thtype_restore 0 - - ip link del dev br222 - ip link del dev br111 - - vlan_destroy $swp3 222 - vlan_destroy $swp3 111 - vlan_destroy $swp2 222 - vlan_destroy $swp1 111 - - tc qdisc del dev $swp3 root handle 101: - mtu_restore $swp3 - ip link set dev $swp3 down - lldptool -T -i $swp3 -V ETS-CFG up2tc=0:0,1:0,2:0,3:0,4:0,5:0,6:0,7:0 - - mtu_restore $swp2 - ip link set dev $swp2 down - - mtu_restore $swp1 - ip link set dev $swp1 down + defer devlink_port_pool_th_restore $swp3 4 } setup_prepare() @@ -223,7 +222,7 @@ setup_prepare() h3mac=$(mac_get $h3) - vrf_prepare + adf_vrf_prepare h1_create h2_create @@ -231,18 +230,6 @@ setup_prepare() switch_create } -cleanup() -{ - pre_cleanup - - switch_destroy - h3_destroy - h2_destroy - h1_destroy - - vrf_cleanup -} - ping_ipv4() { ping_test $h1 192.0.2.34 " from H1" @@ -261,21 +248,38 @@ rel() " } +__run_hi_measure_rate() +{ + local what=$1; shift + local -a uc_rate + + start_traffic $h2.222 192.0.2.65 192.0.2.66 $h3mac + defer stop_traffic $! + + uc_rate=($(measure_rate $swp2 $h3 rx_octets_prio_2 "$what")) + check_err $? "Could not get high enough $what ingress rate" + + echo ${uc_rate[@]} +} + +run_hi_measure_rate() +{ + in_defer_scope __run_hi_measure_rate "$@" +} + test_ets_strict() { RET=0 # Run high-prio traffic on its own. - start_traffic $h2.222 192.0.2.65 192.0.2.66 $h3mac local -a rate_2 - rate_2=($(measure_rate $swp2 $h3 rx_octets_prio_2 "prio 2")) - check_err $? "Could not get high enough prio-2 ingress rate" + rate_2=($(run_hi_measure_rate "prio 2")) local rate_2_in=${rate_2[0]} local rate_2_eg=${rate_2[1]} - stop_traffic # $h2.222 # Start low-prio stream. start_traffic $h1.111 192.0.2.33 192.0.2.34 $h3mac + defer stop_traffic $! local -a rate_1 rate_1=($(measure_rate $swp1 $h3 rx_octets_prio_1 "prio 1")) @@ -290,14 +294,9 @@ test_ets_strict() check_err $(bc <<< "$rel21 > 105") # Start the high-prio stream--now both streams run. - start_traffic $h2.222 192.0.2.65 192.0.2.66 $h3mac - rate_3=($(measure_rate $swp2 $h3 rx_octets_prio_2 "prio 2 w/ 1")) - check_err $? "Could not get high enough prio-2 ingress rate with prio-1" + rate_3=($(run_hi_measure_rate "prio 2+1")) local rate_3_in=${rate_3[0]} local rate_3_eg=${rate_3[1]} - stop_traffic # $h2.222 - - stop_traffic # $h1.111 # High-prio should have about the same throughput whether or not # low-prio is in the system. diff --git a/tools/testing/selftests/drivers/net/mlxsw/qos_max_descriptors.sh b/tools/testing/selftests/drivers/net/mlxsw/qos_max_descriptors.sh index 5ac4f795e333..a4a25637fe2a 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/qos_max_descriptors.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/qos_max_descriptors.sh @@ -68,128 +68,102 @@ mlxsw_only_on_spectrum 2+ || exit h1_create() { - simple_if_init $h1 + adf_simple_if_init $h1 vlan_create $h1 111 v$h1 192.0.2.33/28 + defer vlan_destroy $h1 111 ip link set dev $h1.111 type vlan egress-qos-map 0:1 } -h1_destroy() -{ - vlan_destroy $h1 111 - - simple_if_fini $h1 -} - h2_create() { - simple_if_init $h2 + adf_simple_if_init $h2 vlan_create $h2 111 v$h2 192.0.2.34/28 -} - -h2_destroy() -{ - vlan_destroy $h2 111 - - simple_if_fini $h2 + defer vlan_destroy $h2 111 } switch_create() { # pools # ----- + # devlink_pool_size_thtype_restore needs to be done first so that we can + # reset the various limits to values that are only valid for the + # original static / dynamic setting. devlink_pool_size_thtype_save 1 - devlink_pool_size_thtype_save 6 - - devlink_port_pool_th_save $swp1 1 - devlink_port_pool_th_save $swp2 6 - - devlink_tc_bind_pool_th_save $swp1 1 ingress - devlink_tc_bind_pool_th_save $swp2 1 egress - devlink_pool_size_thtype_set 1 dynamic $MAX_POOL_SIZE + defer_prio devlink_pool_size_thtype_restore 1 + + devlink_pool_size_thtype_save 6 devlink_pool_size_thtype_set 6 static $MAX_POOL_SIZE + defer_prio devlink_pool_size_thtype_restore 6 # $swp1 # ----- ip link set dev $swp1 up + defer ip link set dev $swp1 down + vlan_create $swp1 111 + defer vlan_destroy $swp1 111 ip link set dev $swp1.111 type vlan ingress-qos-map 0:0 1:1 + devlink_port_pool_th_save $swp1 1 devlink_port_pool_th_set $swp1 1 16 + defer devlink_tc_bind_pool_th_restore $swp1 1 ingress + + devlink_tc_bind_pool_th_save $swp1 1 ingress devlink_tc_bind_pool_th_set $swp1 1 ingress 1 16 + defer devlink_port_pool_th_restore $swp1 1 tc qdisc replace dev $swp1 root handle 1: \ ets bands 8 strict 8 priomap 7 6 + defer tc qdisc del dev $swp1 root + dcb buffer set dev $swp1 prio-buffer all:0 1:1 + defer dcb buffer set dev $swp1 prio-buffer all:0 # $swp2 # ----- ip link set dev $swp2 up + defer ip link set dev $swp2 down + vlan_create $swp2 111 + defer vlan_destroy $swp2 111 ip link set dev $swp2.111 type vlan egress-qos-map 0:0 1:1 + devlink_port_pool_th_save $swp2 6 devlink_port_pool_th_set $swp2 6 $MAX_POOL_SIZE + defer devlink_tc_bind_pool_th_restore $swp2 1 egress + + devlink_tc_bind_pool_th_save $swp2 1 egress devlink_tc_bind_pool_th_set $swp2 1 egress 6 $MAX_POOL_SIZE + defer devlink_port_pool_th_restore $swp2 6 tc qdisc replace dev $swp2 root handle 1: tbf rate $SHAPER_RATE \ burst 128K limit 500M + defer tc qdisc del dev $swp2 root + tc qdisc replace dev $swp2 parent 1:1 handle 11: \ ets bands 8 strict 8 priomap 7 6 + defer tc qdisc del dev $swp2 parent 1:1 handle 11: # bridge # ------ ip link add name br1 type bridge vlan_filtering 0 + defer ip link del dev br1 + ip link set dev $swp1.111 master br1 + defer ip link set dev $swp1.111 nomaster + ip link set dev br1 up + defer ip link set dev br1 down ip link set dev $swp2.111 master br1 -} - -switch_destroy() -{ - # Do this first so that we can reset the limits to values that are only - # valid for the original static / dynamic setting. - devlink_pool_size_thtype_restore 6 - devlink_pool_size_thtype_restore 1 - - # bridge - # ------ - - ip link set dev $swp2.111 nomaster - - ip link set dev br1 down - ip link set dev $swp1.111 nomaster - ip link del dev br1 - - # $swp2 - # ----- - - tc qdisc del dev $swp2 parent 1:1 handle 11: - tc qdisc del dev $swp2 root - - devlink_tc_bind_pool_th_restore $swp2 1 egress - devlink_port_pool_th_restore $swp2 6 - - vlan_destroy $swp2 111 - ip link set dev $swp2 down - - # $swp1 - # ----- - - dcb buffer set dev $swp1 prio-buffer all:0 - tc qdisc del dev $swp1 root - - devlink_tc_bind_pool_th_restore $swp1 1 ingress - devlink_port_pool_th_restore $swp1 1 - - vlan_destroy $swp1 111 - ip link set dev $swp1 down + defer ip link set dev $swp2.111 nomaster } setup_prepare() @@ -202,24 +176,13 @@ setup_prepare() h2mac=$(mac_get $h2) - vrf_prepare + adf_vrf_prepare h1_create h2_create switch_create } -cleanup() -{ - pre_cleanup - - switch_destroy - h2_destroy - h1_destroy - - vrf_cleanup -} - ping_ipv4() { ping_test $h1 192.0.2.34 " h1->h2" @@ -251,6 +214,7 @@ max_descriptors() log_info "Send many small packets, packet size = $pktsize bytes" start_traffic_pktsize $pktsize $h1.111 192.0.2.33 192.0.2.34 $h2mac + defer stop_traffic $! # Sleep to wait for congestion. sleep 5 @@ -268,9 +232,6 @@ max_descriptors() check_err $(bc <<< "$perc_used < $exp_perc_used") \ "Expected > $exp_perc_used% of descriptors, handle $perc_used%" - stop_traffic - sleep 1 - log_test "Maximum descriptors usage. The percentage used is $perc_used%" } diff --git a/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh b/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh index 6d892de43fa8..d8f8ae8533cd 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/qos_mc_aware.sh @@ -72,123 +72,112 @@ source qos_lib.sh h1_create() { - simple_if_init $h1 192.0.2.65/28 - mtu_set $h1 10000 -} + adf_simple_if_init $h1 192.0.2.65/28 -h1_destroy() -{ - mtu_restore $h1 - simple_if_fini $h1 192.0.2.65/28 + mtu_set $h1 10000 + defer mtu_restore $h1 } h2_create() { - simple_if_init $h2 + adf_simple_if_init $h2 + mtu_set $h2 10000 + defer mtu_restore $h2 vlan_create $h2 111 v$h2 192.0.2.129/28 + defer vlan_destroy $h2 111 ip link set dev $h2.111 type vlan egress-qos-map 0:1 } -h2_destroy() -{ - vlan_destroy $h2 111 - - mtu_restore $h2 - simple_if_fini $h2 -} - h3_create() { - simple_if_init $h3 192.0.2.66/28 + adf_simple_if_init $h3 192.0.2.66/28 + mtu_set $h3 10000 + defer mtu_restore $h3 vlan_create $h3 111 v$h3 192.0.2.130/28 -} - -h3_destroy() -{ - vlan_destroy $h3 111 - - mtu_restore $h3 - simple_if_fini $h3 192.0.2.66/28 + defer vlan_destroy $h3 111 } switch_create() { ip link set dev $swp1 up + defer ip link set dev $swp1 down + mtu_set $swp1 10000 + defer mtu_restore $swp1 ip link set dev $swp2 up + defer ip link set dev $swp2 down + mtu_set $swp2 10000 + defer mtu_restore $swp2 ip link set dev $swp3 up + defer ip link set dev $swp3 down + mtu_set $swp3 10000 + defer mtu_restore $swp3 vlan_create $swp2 111 + defer vlan_destroy $swp2 111 + vlan_create $swp3 111 + defer vlan_destroy $swp3 111 tc qdisc replace dev $swp3 root handle 3: tbf rate 1gbit \ burst 128K limit 1G + defer tc qdisc del dev $swp3 root handle 3: + tc qdisc replace dev $swp3 parent 3:3 handle 33: \ prio bands 8 priomap 7 7 7 7 7 7 7 7 + defer tc qdisc del dev $swp3 parent 3:3 handle 33: ip link add name br1 type bridge vlan_filtering 0 + defer ip link del dev br1 ip link set dev br1 addrgenmode none ip link set dev br1 up + ip link set dev $swp1 master br1 + defer ip link set dev $swp1 nomaster + ip link set dev $swp3 master br1 + defer ip link set dev $swp3 nomaster ip link add name br111 type bridge vlan_filtering 0 + defer ip link del dev br111 ip link set dev br111 addrgenmode none ip link set dev br111 up + ip link set dev $swp2.111 master br111 + defer ip link set dev $swp2.111 nomaster + ip link set dev $swp3.111 master br111 + defer ip link set dev $swp3.111 nomaster # Make sure that ingress quotas are smaller than egress so that there is # room for both streams of traffic to be admitted to shared buffer. devlink_port_pool_th_save $swp1 0 devlink_port_pool_th_set $swp1 0 5 + defer devlink_port_pool_th_restore $swp1 0 + devlink_tc_bind_pool_th_save $swp1 0 ingress devlink_tc_bind_pool_th_set $swp1 0 ingress 0 5 + defer devlink_tc_bind_pool_th_restore $swp1 0 ingress devlink_port_pool_th_save $swp2 0 devlink_port_pool_th_set $swp2 0 5 + defer devlink_port_pool_th_restore $swp2 0 + devlink_tc_bind_pool_th_save $swp2 1 ingress devlink_tc_bind_pool_th_set $swp2 1 ingress 0 5 + defer devlink_tc_bind_pool_th_restore $swp2 1 ingress devlink_port_pool_th_save $swp3 4 devlink_port_pool_th_set $swp3 4 12 -} - -switch_destroy() -{ - devlink_port_pool_th_restore $swp3 4 - - devlink_tc_bind_pool_th_restore $swp2 1 ingress - devlink_port_pool_th_restore $swp2 0 - - devlink_tc_bind_pool_th_restore $swp1 0 ingress - devlink_port_pool_th_restore $swp1 0 - - ip link del dev br111 - ip link del dev br1 - - tc qdisc del dev $swp3 parent 3:3 handle 33: - tc qdisc del dev $swp3 root handle 3: - - vlan_destroy $swp3 111 - vlan_destroy $swp2 111 - - mtu_restore $swp3 - ip link set dev $swp3 down - - mtu_restore $swp2 - ip link set dev $swp2 down - - mtu_restore $swp1 - ip link set dev $swp1 down + defer devlink_port_pool_th_restore $swp3 4 } setup_prepare() @@ -204,7 +193,7 @@ setup_prepare() h3mac=$(mac_get $h3) - vrf_prepare + adf_vrf_prepare h1_create h2_create @@ -212,45 +201,45 @@ setup_prepare() switch_create } -cleanup() +ping_ipv4() { - pre_cleanup + ping_test $h2 192.0.2.130 +} - switch_destroy - h3_destroy - h2_destroy - h1_destroy +__run_uc_measure_rate() +{ + local what=$1; shift + local -a uc_rate + + start_traffic $h2.111 192.0.2.129 192.0.2.130 $h3mac + defer stop_traffic $! + + uc_rate=($(measure_rate $swp2 $h3 rx_octets_prio_1 "$what")) + check_err $? "Could not get high enough $what ingress rate" - vrf_cleanup + echo ${uc_rate[@]} } -ping_ipv4() +run_uc_measure_rate() { - ping_test $h2 192.0.2.130 + in_defer_scope __run_uc_measure_rate "$@" } test_mc_aware() { RET=0 - local -a uc_rate - start_traffic $h2.111 192.0.2.129 192.0.2.130 $h3mac - uc_rate=($(measure_rate $swp2 $h3 rx_octets_prio_1 "UC-only")) - check_err $? "Could not get high enough UC-only ingress rate" - stop_traffic + local -a uc_rate=($(run_uc_measure_rate "UC-only")) local ucth1=${uc_rate[1]} start_traffic $h1 192.0.2.65 bc bc + defer stop_traffic $! local d0=$(date +%s) local t0=$(ethtool_stats_get $h3 rx_octets_prio_0) local u0=$(ethtool_stats_get $swp1 rx_octets_prio_0) - local -a uc_rate_2 - start_traffic $h2.111 192.0.2.129 192.0.2.130 $h3mac - uc_rate_2=($(measure_rate $swp2 $h3 rx_octets_prio_1 "UC+MC")) - check_err $? "Could not get high enough UC+MC ingress rate" - stop_traffic + local -a uc_rate_2=($(run_uc_measure_rate "UC+MC")) local ucth2=${uc_rate_2[1]} local d1=$(date +%s) @@ -272,8 +261,6 @@ test_mc_aware() local mc_ir=$(rate $u0 $u1 $interval) local mc_er=$(rate $t0 $t1 $interval) - stop_traffic - log_test "UC performance under MC overload" echo "UC-only throughput $(humanize $ucth1)" @@ -297,6 +284,7 @@ test_uc_aware() RET=0 start_traffic $h2.111 192.0.2.129 192.0.2.130 $h3mac + defer stop_traffic $! local d0=$(date +%s) local t0=$(ethtool_stats_get $h3 rx_octets_prio_1) @@ -326,8 +314,6 @@ test_uc_aware() ((attempts == passes)) check_err $? - stop_traffic - log_test "MC performance under UC overload" echo " ingress UC throughput $(humanize ${uc_ir})" echo " egress UC throughput $(humanize ${uc_er})" diff --git a/tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh b/tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh index b79542a4dcc7..4a11bf1d514a 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh @@ -12,6 +12,7 @@ ALL_TESTS=" bridge_rif_remaster_port " +REQUIRE_TEAMD="yes" NUM_NETIFS=2 source $lib_dir/lib.sh source $lib_dir/devlink_lib.sh diff --git a/tools/testing/selftests/drivers/net/mlxsw/rif_lag.sh b/tools/testing/selftests/drivers/net/mlxsw/rif_lag.sh index e28f978104f3..b8bbe94f4736 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/rif_lag.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/rif_lag.sh @@ -10,6 +10,7 @@ ALL_TESTS=" lag_rif_nomaster_addr " +REQUIRE_TEAMD="yes" NUM_NETIFS=2 source $lib_dir/lib.sh source $lib_dir/devlink_lib.sh diff --git a/tools/testing/selftests/drivers/net/mlxsw/rif_lag_vlan.sh b/tools/testing/selftests/drivers/net/mlxsw/rif_lag_vlan.sh index 6318cfa6434c..d1a9d379eaf3 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/rif_lag_vlan.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/rif_lag_vlan.sh @@ -10,6 +10,7 @@ ALL_TESTS=" lag_rif_nomaster_addr " +REQUIRE_TEAMD="yes" NUM_NETIFS=2 source $lib_dir/lib.sh source $lib_dir/devlink_lib.sh diff --git a/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh b/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh index 893a693ad805..45a569618424 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh @@ -186,10 +186,7 @@ bridge_vlan_flags_test() # If we did not handle references correctly, then this should produce a # trace - devlink dev reload "$DEVLINK_DEV" - - # Allow netdevices to be re-created following the reload - sleep 20 + devlink_reload log_test "bridge vlan flags" } @@ -923,12 +920,9 @@ devlink_reload_test() # devlink reload can be performed without errors RET=0 - devlink dev reload "$DEVLINK_DEV" - check_err $? "devlink reload failed" + devlink_reload log_test "devlink reload - last test" - - sleep 20 } trap cleanup EXIT diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_ets.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_ets.sh index 139175fd03e7..4aaceb6b2b60 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_ets.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_ets.sh @@ -21,6 +21,7 @@ switch_create() # Create a bottleneck so that the DWRR process can kick in. tc qdisc replace dev $swp2 root handle 3: tbf rate 1gbit \ burst 128K limit 1G + defer tc qdisc del dev $swp2 root handle 3: ets_switch_create @@ -30,16 +31,27 @@ switch_create() # for the DWRR process. devlink_port_pool_th_save $swp1 0 devlink_port_pool_th_set $swp1 0 12 + defer devlink_port_pool_th_restore $swp1 0 + devlink_tc_bind_pool_th_save $swp1 0 ingress devlink_tc_bind_pool_th_set $swp1 0 ingress 0 12 + defer devlink_tc_bind_pool_th_restore $swp1 0 ingress + devlink_port_pool_th_save $swp2 4 devlink_port_pool_th_set $swp2 4 12 + defer devlink_port_pool_th_restore $swp2 4 + devlink_tc_bind_pool_th_save $swp2 7 egress devlink_tc_bind_pool_th_set $swp2 7 egress 4 5 + defer devlink_tc_bind_pool_th_restore $swp2 7 egress + devlink_tc_bind_pool_th_save $swp2 6 egress devlink_tc_bind_pool_th_set $swp2 6 egress 4 5 + defer devlink_tc_bind_pool_th_restore $swp2 6 egress + devlink_tc_bind_pool_th_save $swp2 5 egress devlink_tc_bind_pool_th_set $swp2 5 egress 4 5 + defer devlink_tc_bind_pool_th_restore $swp2 5 egress # Note: sch_ets_core.sh uses VLAN ingress-qos-map to assign packet # priorities at $swp1 based on their 802.1p headers. ingress-qos-map is @@ -47,20 +59,6 @@ switch_create() # 1:1, which is the mapping currently hard-coded by the driver. } -switch_destroy() -{ - devlink_tc_bind_pool_th_restore $swp2 5 egress - devlink_tc_bind_pool_th_restore $swp2 6 egress - devlink_tc_bind_pool_th_restore $swp2 7 egress - devlink_port_pool_th_restore $swp2 4 - devlink_tc_bind_pool_th_restore $swp1 0 ingress - devlink_port_pool_th_restore $swp1 0 - - ets_switch_destroy - - tc qdisc del dev $swp2 root handle 3: -} - # Callback from sch_ets_tests.sh collect_stats() { diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh index 299e06a5808c..47d2ffcf366e 100644 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh @@ -75,6 +75,18 @@ source $lib_dir/lib.sh source $lib_dir/devlink_lib.sh source mlxsw_lib.sh +stop_traffic_sleep() +{ + local pid=$1; shift + + # Issuing a kill still leaves a bunch of packets lingering in the + # buffers. This traffic then arrives at the point where a follow-up test + # is already running, and can confuse the test. Therefore sleep after + # stopping traffic to flush any leftover packets. + stop_traffic "$pid" + sleep 1 +} + ipaddr() { local host=$1; shift @@ -88,40 +100,31 @@ host_create() local dev=$1; shift local host=$1; shift - simple_if_init $dev + adf_simple_if_init $dev + mtu_set $dev 10000 + defer mtu_restore $dev vlan_create $dev 10 v$dev $(ipaddr $host 10)/28 + defer vlan_destroy $dev 10 ip link set dev $dev.10 type vlan egress 0:0 vlan_create $dev 11 v$dev $(ipaddr $host 11)/28 + defer vlan_destroy $dev 11 ip link set dev $dev.11 type vlan egress 0:1 } -host_destroy() -{ - local dev=$1; shift - - vlan_destroy $dev 11 - vlan_destroy $dev 10 - mtu_restore $dev - simple_if_fini $dev -} - h1_create() { host_create $h1 1 } -h1_destroy() -{ - host_destroy $h1 -} - h2_create() { host_create $h2 2 + tc qdisc add dev $h2 clsact + defer tc qdisc del dev $h2 clsact # Some of the tests in this suite use multicast traffic. As this traffic # enters BR2_10 resp. BR2_11, it is flooded to all other ports. Thus @@ -137,15 +140,9 @@ h2_create() # Prevent this by adding a shaper which limits the traffic in $h2 to # 1Gbps. - tc qdisc replace dev $h2 root handle 10: tbf rate 1gbit \ + tc qdisc replace dev $h2 root handle 10: tbf rate 200mbit \ burst 128K limit 1G -} - -h2_destroy() -{ - tc qdisc del dev $h2 root handle 10: - tc qdisc del dev $h2 clsact - host_destroy $h2 + defer tc qdisc del dev $h2 root handle 10: } h3_create() @@ -153,40 +150,54 @@ h3_create() host_create $h3 3 } -h3_destroy() -{ - host_destroy $h3 -} - switch_create() { local intf local vlan ip link add dev br1_10 type bridge + defer ip link del dev br1_10 + ip link add dev br1_11 type bridge + defer ip link del dev br1_11 ip link add dev br2_10 type bridge + defer ip link del dev br2_10 + ip link add dev br2_11 type bridge + defer ip link del dev br2_11 for intf in $swp1 $swp2 $swp3 $swp4 $swp5; do ip link set dev $intf up + defer ip link set dev $intf down + mtu_set $intf 10000 + defer mtu_restore $intf done for intf in $swp1 $swp4; do for vlan in 10 11; do vlan_create $intf $vlan + defer vlan_destroy $intf $vlan + ip link set dev $intf.$vlan master br1_$vlan + defer ip link set dev $intf.$vlan nomaster + ip link set dev $intf.$vlan up + defer ip link set dev $intf.$vlan up done done for intf in $swp2 $swp3 $swp5; do for vlan in 10 11; do vlan_create $intf $vlan + defer vlan_destroy $intf $vlan + ip link set dev $intf.$vlan master br2_$vlan + defer ip link set dev $intf.$vlan nomaster + ip link set dev $intf.$vlan up + defer ip link set dev $intf.$vlan up done done @@ -199,51 +210,27 @@ switch_create() done for intf in $swp3 $swp4; do - tc qdisc replace dev $intf root handle 1: tbf rate 1gbit \ + tc qdisc replace dev $intf root handle 1: tbf rate 200mbit \ burst 128K limit 1G + defer tc qdisc del dev $intf root handle 1: done ip link set dev br1_10 up + defer ip link set dev br1_10 down + ip link set dev br1_11 up + defer ip link set dev br1_11 down + ip link set dev br2_10 up + defer ip link set dev br2_10 down + ip link set dev br2_11 up + defer ip link set dev br2_11 down local size=$(devlink_pool_size_thtype 0 | cut -d' ' -f 1) devlink_port_pool_th_save $swp3 8 devlink_port_pool_th_set $swp3 8 $size -} - -switch_destroy() -{ - local intf - local vlan - - devlink_port_pool_th_restore $swp3 8 - - ip link set dev br2_11 down - ip link set dev br2_10 down - ip link set dev br1_11 down - ip link set dev br1_10 down - - for intf in $swp4 $swp3; do - tc qdisc del dev $intf root handle 1: - done - - for intf in $swp5 $swp3 $swp2 $swp4 $swp1; do - for vlan in 11 10; do - ip link set dev $intf.$vlan down - ip link set dev $intf.$vlan nomaster - vlan_destroy $intf $vlan - done - - mtu_restore $intf - ip link set dev $intf down - done - - ip link del dev br2_11 - ip link del dev br2_10 - ip link del dev br1_11 - ip link del dev br1_10 + defer devlink_port_pool_th_restore $swp3 8 } setup_prepare() @@ -262,7 +249,7 @@ setup_prepare() h3_mac=$(mac_get $h3) - vrf_prepare + adf_vrf_prepare h1_create h2_create @@ -270,18 +257,6 @@ setup_prepare() switch_create } -cleanup() -{ - pre_cleanup - - switch_destroy - h3_destroy - h2_destroy - h1_destroy - - vrf_cleanup -} - ping_ipv4() { ping_test $h1.10 $(ipaddr 3 10) " from host 1, vlan 10" @@ -372,6 +347,7 @@ build_backlog() local i=0 while :; do + sleep 1 local cur=$(busywait 1100 until_counter_is "> $cur" \ get_qdisc_backlog $vlan) local diff=$((size - cur)) @@ -449,6 +425,7 @@ __do_ecn_test() start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \ $h3_mac tos=0x01 + defer stop_traffic_sleep $! sleep 1 ecn_test_common "$name" "$get_nmarked" $vlan $limit @@ -460,9 +437,6 @@ __do_ecn_test() build_backlog $vlan $((2 * limit)) udp >/dev/null check_fail $? "UDP traffic went into backlog instead of being early-dropped" log_test "TC $((vlan - 10)): $name backlog > limit: UDP early-dropped" - - stop_traffic - sleep 1 } do_ecn_test() @@ -470,7 +444,8 @@ do_ecn_test() local vlan=$1; shift local limit=$1; shift - __do_ecn_test get_nmarked "$vlan" "$limit" + in_defer_scope \ + __do_ecn_test get_nmarked "$vlan" "$limit" } do_ecn_test_perband() @@ -479,10 +454,11 @@ do_ecn_test_perband() local limit=$1; shift mlxsw_only_on_spectrum 3+ || return - __do_ecn_test get_qdisc_nmarked "$vlan" "$limit" "per-band ECN" + in_defer_scope \ + __do_ecn_test get_qdisc_nmarked "$vlan" "$limit" "per-band ECN" } -do_ecn_nodrop_test() +__do_ecn_nodrop_test() { local vlan=$1; shift local limit=$1; shift @@ -490,6 +466,7 @@ do_ecn_nodrop_test() start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \ $h3_mac tos=0x01 + defer stop_traffic_sleep $! sleep 1 ecn_test_common "$name" get_nmarked $vlan $limit @@ -501,12 +478,15 @@ do_ecn_nodrop_test() build_backlog $vlan $((2 * limit)) udp >/dev/null check_err $? "UDP traffic was early-dropped instead of getting into backlog" log_test "TC $((vlan - 10)): $name backlog > limit: UDP not dropped" +} - stop_traffic - sleep 1 +do_ecn_nodrop_test() +{ + in_defer_scope \ + __do_ecn_nodrop_test "$@" } -do_red_test() +__do_red_test() { local vlan=$1; shift local limit=$1; shift @@ -517,6 +497,7 @@ do_red_test() # is above limit. start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \ $h3_mac tos=0x01 + defer stop_traffic_sleep $! # Pushing below the queue limit should work. RET=0 @@ -532,17 +513,21 @@ do_red_test() check_fail $? "Traffic went into backlog instead of being early-dropped" pct=$(check_marking get_nmarked $vlan "== 0") check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0." + backlog=$(get_qdisc_backlog $vlan) local diff=$((limit - backlog)) pct=$((100 * diff / limit)) - ((-10 <= pct && pct <= 10)) - check_err $? "backlog $backlog / $limit expected <= 10% distance" + ((-15 <= pct && pct <= 15)) + check_err $? "backlog $backlog / $limit expected <= 15% distance" log_test "TC $((vlan - 10)): RED backlog > limit" +} - stop_traffic - sleep 1 +do_red_test() +{ + in_defer_scope \ + __do_red_test "$@" } -do_mc_backlog_test() +__do_mc_backlog_test() { local vlan=$1; shift local limit=$1; shift @@ -552,7 +537,10 @@ do_mc_backlog_test() RET=0 start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) bc + defer stop_traffic_sleep $! + start_tcp_traffic $h2.$vlan $(ipaddr 2 $vlan) $(ipaddr 3 $vlan) bc + defer stop_traffic_sleep $! qbl=$(busywait 5000 until_counter_is ">= 500000" \ get_qdisc_backlog $vlan) @@ -565,13 +553,16 @@ do_mc_backlog_test() get_mc_transmit_queue $vlan) check_err $? "MC backlog reported by qdisc not visible in ethtool" - stop_traffic - stop_traffic - log_test "TC $((vlan - 10)): Qdisc reports MC backlog" } -do_mark_test() +do_mc_backlog_test() +{ + in_defer_scope \ + __do_mc_backlog_test "$@" +} + +__do_mark_test() { local vlan=$1; shift local limit=$1; shift @@ -586,6 +577,7 @@ do_mark_test() start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \ $h3_mac tos=0x01 + defer stop_traffic_sleep $! # Create a bit of a backlog and observe no mirroring due to marks. qevent_rule_install_$subtest @@ -600,7 +592,7 @@ do_mark_test() # Above limit, everything should be mirrored, we should see lots of # packets. build_backlog $vlan $((3 * limit / 2)) tcp tos=0x01 >/dev/null - busywait_for_counter 1100 +10000 \ + busywait_for_counter 1100 +2500 \ $fetch_counter > /dev/null check_err_fail "$should_fail" $? "ECN-marked packets $subtest'd" @@ -615,12 +607,15 @@ do_mark_test() else log_test "TC $((vlan - 10)): marked packets $subtest'd" fi +} - stop_traffic - sleep 1 +do_mark_test() +{ + in_defer_scope \ + __do_mark_test "$@" } -do_drop_test() +__do_drop_test() { local vlan=$1; shift local limit=$1; shift @@ -635,6 +630,7 @@ do_drop_test() RET=0 start_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) $h3_mac + defer stop_traffic_sleep $! # Create a bit of a backlog and observe no mirroring due to drops. qevent_rule_install_$subtest @@ -651,25 +647,30 @@ do_drop_test() build_backlog $vlan $((3 * limit / 2)) udp >/dev/null base=$($fetch_counter) - send_packets $vlan udp 11 + send_packets $vlan udp 100 - now=$(busywait 1100 until_counter_is ">= $((base + 10))" $fetch_counter) - check_err $? "Dropped packets not observed: 11 expected, $((now - base)) seen" + now=$(busywait 1100 until_counter_is ">= $((base + 95))" $fetch_counter) + check_err $? "${trigger}ped packets not observed: 100 expected, $((now - base)) seen" # When no extra traffic is injected, there should be no mirroring. - busywait 1100 until_counter_is ">= $((base + 20))" $fetch_counter >/dev/null + busywait 1100 until_counter_is ">= $((base + 110))" \ + $fetch_counter >/dev/null check_fail $? "Spurious packets observed" # When the rule is uninstalled, there should be no mirroring. qevent_rule_uninstall_$subtest - send_packets $vlan udp 11 - busywait 1100 until_counter_is ">= $((base + 20))" $fetch_counter >/dev/null - check_fail $? "Spurious packets observed after uninstall" + send_packets $vlan udp 100 + now=$(busywait 1100 until_counter_is ">= $((base + 110))" \ + $fetch_counter) + check_fail $? "$((now - base)) spurious packets observed after uninstall" log_test "TC $((vlan - 10)): ${trigger}ped packets $subtest'd" +} - stop_traffic - sleep 1 +do_drop_test() +{ + in_defer_scope \ + __do_drop_test "$@" } qevent_rule_install_mirror() diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh index 8ecddafa79b3..8902a115d9cd 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh @@ -20,8 +20,8 @@ source sch_red_core.sh # $BACKLOG2 are far enough not to overlap, so that we can assume that if we do # see (do not see) marking, it is actually due to the configuration of that one # TC, and not due to configuration of the other TC leaking over. -BACKLOG1=200000 -BACKLOG2=500000 +BACKLOG1=400000 +BACKLOG2=1000000 install_root_qdisc() { @@ -35,7 +35,7 @@ install_qdisc_tc0() tc qdisc add dev $swp3 parent 10:8 handle 108: red \ limit 1000000 min $BACKLOG1 max $((BACKLOG1 + 1)) \ - probability 1.0 avpkt 8000 burst 38 "${args[@]}" + probability 1.0 avpkt 8000 burst 51 "${args[@]}" } install_qdisc_tc1() @@ -44,7 +44,7 @@ install_qdisc_tc1() tc qdisc add dev $swp3 parent 10:7 handle 107: red \ limit 1000000 min $BACKLOG2 max $((BACKLOG2 + 1)) \ - probability 1.0 avpkt 8000 burst 63 "${args[@]}" + probability 1.0 avpkt 8000 burst 126 "${args[@]}" } install_qdisc() @@ -80,36 +80,34 @@ uninstall_qdisc() ecn_test() { install_qdisc ecn + defer uninstall_qdisc do_ecn_test 10 $BACKLOG1 do_ecn_test 11 $BACKLOG2 - - uninstall_qdisc } ecn_test_perband() { install_qdisc ecn + defer uninstall_qdisc do_ecn_test_perband 10 $BACKLOG1 do_ecn_test_perband 11 $BACKLOG2 - - uninstall_qdisc } ecn_nodrop_test() { install_qdisc ecn nodrop + defer uninstall_qdisc do_ecn_nodrop_test 10 $BACKLOG1 do_ecn_nodrop_test 11 $BACKLOG2 - - uninstall_qdisc } red_test() { install_qdisc + defer uninstall_qdisc # Make sure that we get the non-zero value if there is any. local cur=$(busywait 1100 until_counter_is "> 0" \ @@ -120,50 +118,44 @@ red_test() do_red_test 10 $BACKLOG1 do_red_test 11 $BACKLOG2 - - uninstall_qdisc } mc_backlog_test() { install_qdisc + defer uninstall_qdisc # Note that the backlog numbers here do not correspond to RED # configuration, but are arbitrary. do_mc_backlog_test 10 $BACKLOG1 do_mc_backlog_test 11 $BACKLOG2 - - uninstall_qdisc } red_mirror_test() { install_qdisc qevent early_drop block 10 + defer uninstall_qdisc do_drop_mirror_test 10 $BACKLOG1 early_drop do_drop_mirror_test 11 $BACKLOG2 early_drop - - uninstall_qdisc } red_trap_test() { install_qdisc qevent early_drop block 10 + defer uninstall_qdisc do_drop_trap_test 10 $BACKLOG1 early_drop do_drop_trap_test 11 $BACKLOG2 early_drop - - uninstall_qdisc } ecn_mirror_test() { install_qdisc ecn qevent mark block 10 + defer uninstall_qdisc do_mark_mirror_test 10 $BACKLOG1 do_mark_mirror_test 11 $BACKLOG2 - - uninstall_qdisc } bail_on_lldpad "configure DCB" "configure Qdiscs" diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh index 159108d02895..e9043771787b 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh @@ -32,45 +32,51 @@ uninstall_qdisc() ecn_test() { install_qdisc ecn + defer uninstall_qdisc + do_ecn_test 10 $BACKLOG - uninstall_qdisc } ecn_test_perband() { install_qdisc ecn + defer uninstall_qdisc + do_ecn_test_perband 10 $BACKLOG - uninstall_qdisc } ecn_nodrop_test() { install_qdisc ecn nodrop + defer uninstall_qdisc + do_ecn_nodrop_test 10 $BACKLOG - uninstall_qdisc } red_test() { install_qdisc + defer uninstall_qdisc + do_red_test 10 $BACKLOG - uninstall_qdisc } mc_backlog_test() { install_qdisc + defer uninstall_qdisc + # Note that the backlog value here does not correspond to RED # configuration, but is arbitrary. do_mc_backlog_test 10 $BACKLOG - uninstall_qdisc } red_mirror_test() { install_qdisc qevent early_drop block 10 + defer uninstall_qdisc + do_drop_mirror_test 10 $BACKLOG - uninstall_qdisc } bail_on_lldpad "configure DCB" "configure Qdiscs" diff --git a/tools/testing/selftests/drivers/net/mlxsw/sharedbuffer.sh b/tools/testing/selftests/drivers/net/mlxsw/sharedbuffer.sh index 0c47faff9274..c068e6c2a580 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/sharedbuffer.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/sharedbuffer.sh @@ -22,20 +22,34 @@ SB_ITC=0 h1_create() { simple_if_init $h1 192.0.1.1/24 + tc qdisc add dev $h1 clsact + + # Add egress filter on $h1 that will guarantee that the packet sent, + # will be the only packet being passed to the device. + tc filter add dev $h1 egress pref 2 handle 102 matchall action drop } h1_destroy() { + tc filter del dev $h1 egress pref 2 handle 102 matchall action drop + tc qdisc del dev $h1 clsact simple_if_fini $h1 192.0.1.1/24 } h2_create() { simple_if_init $h2 192.0.1.2/24 + tc qdisc add dev $h2 clsact + + # Add egress filter on $h2 that will guarantee that the packet sent, + # will be the only packet being passed to the device. + tc filter add dev $h2 egress pref 1 handle 101 matchall action drop } h2_destroy() { + tc filter del dev $h2 egress pref 1 handle 101 matchall action drop + tc qdisc del dev $h2 clsact simple_if_fini $h2 192.0.1.2/24 } @@ -101,6 +115,11 @@ port_pool_test() local exp_max_occ=$(devlink_cell_size_get) local max_occ + tc filter add dev $h1 egress protocol ip pref 1 handle 101 flower \ + src_mac $h1mac dst_mac $h2mac \ + src_ip 192.0.1.1 dst_ip 192.0.1.2 \ + action pass + devlink sb occupancy clearmax $DEVLINK_DEV $MZ $h1 -c 1 -p 10 -a $h1mac -b $h2mac -A 192.0.1.1 -B 192.0.1.2 \ @@ -109,11 +128,6 @@ port_pool_test() devlink sb occupancy snapshot $DEVLINK_DEV RET=0 - max_occ=$(sb_occ_pool_check $dl_port1 $SB_POOL_ING $exp_max_occ) - check_err $? "Expected iPool($SB_POOL_ING) max occupancy to be $exp_max_occ, but got $max_occ" - log_test "physical port's($h1) ingress pool" - - RET=0 max_occ=$(sb_occ_pool_check $dl_port2 $SB_POOL_ING $exp_max_occ) check_err $? "Expected iPool($SB_POOL_ING) max occupancy to be $exp_max_occ, but got $max_occ" log_test "physical port's($h2) ingress pool" @@ -122,6 +136,11 @@ port_pool_test() max_occ=$(sb_occ_pool_check $cpu_dl_port $SB_POOL_EGR_CPU $exp_max_occ) check_err $? "Expected ePool($SB_POOL_EGR_CPU) max occupancy to be $exp_max_occ, but got $max_occ" log_test "CPU port's egress pool" + + tc filter del dev $h1 egress protocol ip pref 1 handle 101 flower \ + src_mac $h1mac dst_mac $h2mac \ + src_ip 192.0.1.1 dst_ip 192.0.1.2 \ + action pass } port_tc_ip_test() @@ -129,6 +148,11 @@ port_tc_ip_test() local exp_max_occ=$(devlink_cell_size_get) local max_occ + tc filter add dev $h1 egress protocol ip pref 1 handle 101 flower \ + src_mac $h1mac dst_mac $h2mac \ + src_ip 192.0.1.1 dst_ip 192.0.1.2 \ + action pass + devlink sb occupancy clearmax $DEVLINK_DEV $MZ $h1 -c 1 -p 10 -a $h1mac -b $h2mac -A 192.0.1.1 -B 192.0.1.2 \ @@ -139,17 +163,17 @@ port_tc_ip_test() RET=0 max_occ=$(sb_occ_itc_check $dl_port2 $SB_ITC $exp_max_occ) check_err $? "Expected ingress TC($SB_ITC) max occupancy to be $exp_max_occ, but got $max_occ" - log_test "physical port's($h1) ingress TC - IP packet" - - RET=0 - max_occ=$(sb_occ_itc_check $dl_port2 $SB_ITC $exp_max_occ) - check_err $? "Expected ingress TC($SB_ITC) max occupancy to be $exp_max_occ, but got $max_occ" log_test "physical port's($h2) ingress TC - IP packet" RET=0 max_occ=$(sb_occ_etc_check $cpu_dl_port $SB_ITC_CPU_IP $exp_max_occ) check_err $? "Expected egress TC($SB_ITC_CPU_IP) max occupancy to be $exp_max_occ, but got $max_occ" log_test "CPU port's egress TC - IP packet" + + tc filter del dev $h1 egress protocol ip pref 1 handle 101 flower \ + src_mac $h1mac dst_mac $h2mac \ + src_ip 192.0.1.1 dst_ip 192.0.1.2 \ + action pass } port_tc_arp_test() @@ -157,6 +181,9 @@ port_tc_arp_test() local exp_max_occ=$(devlink_cell_size_get) local max_occ + tc filter add dev $h1 egress protocol arp pref 1 handle 101 flower \ + src_mac $h1mac action pass + devlink sb occupancy clearmax $DEVLINK_DEV $MZ $h1 -c 1 -p 10 -a $h1mac -A 192.0.1.1 -t arp -q @@ -166,17 +193,15 @@ port_tc_arp_test() RET=0 max_occ=$(sb_occ_itc_check $dl_port2 $SB_ITC $exp_max_occ) check_err $? "Expected ingress TC($SB_ITC) max occupancy to be $exp_max_occ, but got $max_occ" - log_test "physical port's($h1) ingress TC - ARP packet" - - RET=0 - max_occ=$(sb_occ_itc_check $dl_port2 $SB_ITC $exp_max_occ) - check_err $? "Expected ingress TC($SB_ITC) max occupancy to be $exp_max_occ, but got $max_occ" log_test "physical port's($h2) ingress TC - ARP packet" RET=0 max_occ=$(sb_occ_etc_check $cpu_dl_port $SB_ITC_CPU_ARP $exp_max_occ) check_err $? "Expected egress TC($SB_ITC_IP2ME) max occupancy to be $exp_max_occ, but got $max_occ" log_test "CPU port's egress TC - ARP packet" + + tc filter del dev $h1 egress protocol arp pref 1 handle 101 flower \ + src_mac $h1mac action pass } setup_prepare() diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh index 899b6892603f..d7505b933aef 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh @@ -51,7 +51,7 @@ for current_test in ${TESTS:-$ALL_TESTS}; do fi ${current_test}_setup_prepare - setup_wait $num_netifs + setup_wait_n $num_netifs # Update target in case occupancy of a certain resource changed # following the test setup. target=$(${current_test}_get_target "$should_fail") diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh index 482ebb744eba..7b98cdd0580d 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh @@ -55,7 +55,7 @@ for current_test in ${TESTS:-$ALL_TESTS}; do continue fi ${current_test}_setup_prepare - setup_wait $num_netifs + setup_wait_n $num_netifs # Update target in case occupancy of a certain resource # changed following the test setup. target=$(${current_test}_get_target "$should_fail") diff --git a/tools/testing/selftests/drivers/net/mlxsw/tc_sample.sh b/tools/testing/selftests/drivers/net/mlxsw/tc_sample.sh index 83a0210e7544..bc7ea2df49fb 100755 --- a/tools/testing/selftests/drivers/net/mlxsw/tc_sample.sh +++ b/tools/testing/selftests/drivers/net/mlxsw/tc_sample.sh @@ -218,7 +218,7 @@ psample_capture_start() psample_capture_stop() { - { kill %% && wait %%; } 2>/dev/null + kill_process %% } __tc_sample_rate_test() @@ -499,7 +499,7 @@ tc_sample_md_out_tc_occ_test() backlog=$(tc -j -p -s qdisc show dev $rp2 | jq '.[0]["backlog"]') # Kill mausezahn. - { kill %% && wait %%; } 2>/dev/null + kill_process %% psample_capture_stop diff --git a/tools/testing/selftests/drivers/net/napi_id.py b/tools/testing/selftests/drivers/net/napi_id.py new file mode 100755 index 000000000000..d05eddcad539 --- /dev/null +++ b/tools/testing/selftests/drivers/net/napi_id.py @@ -0,0 +1,23 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +from lib.py import ksft_run, ksft_exit +from lib.py import ksft_eq, NetDrvEpEnv +from lib.py import bkg, cmd, rand_port, NetNSEnter + +def test_napi_id(cfg) -> None: + port = rand_port() + listen_cmd = f"{cfg.test_dir}/napi_id_helper {cfg.addr} {port}" + + with bkg(listen_cmd, ksft_wait=3) as server: + cmd(f"echo a | socat - TCP:{cfg.baddr}:{port}", host=cfg.remote, shell=True) + + ksft_eq(0, server.ret) + +def main() -> None: + with NetDrvEpEnv(__file__) as cfg: + ksft_run([test_napi_id], args=(cfg,)) + ksft_exit() + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/napi_id_helper.c b/tools/testing/selftests/drivers/net/napi_id_helper.c new file mode 100644 index 000000000000..7f49ca6c8637 --- /dev/null +++ b/tools/testing/selftests/drivers/net/napi_id_helper.c @@ -0,0 +1,100 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <arpa/inet.h> +#include <sys/socket.h> +#include <netdb.h> + +#include "../../net/lib/ksft.h" + +int main(int argc, char *argv[]) +{ + struct sockaddr_storage address; + struct addrinfo *result; + struct addrinfo hints; + unsigned int napi_id; + socklen_t addr_len; + socklen_t optlen; + char buf[1024]; + int opt = 1; + int family; + int server; + int client; + int ret; + + memset(&hints, 0, sizeof(hints)); + hints.ai_family = AF_UNSPEC; + hints.ai_socktype = SOCK_STREAM; + hints.ai_flags = AI_PASSIVE; + + ret = getaddrinfo(argv[1], argv[2], &hints, &result); + if (ret != 0) { + fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(ret)); + return 1; + } + + family = result->ai_family; + addr_len = result->ai_addrlen; + + server = socket(family, SOCK_STREAM, IPPROTO_TCP); + if (server < 0) { + perror("socket creation failed"); + freeaddrinfo(result); + if (errno == EAFNOSUPPORT) + return -1; + return 1; + } + + if (setsockopt(server, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt))) { + perror("setsockopt"); + freeaddrinfo(result); + return 1; + } + + memcpy(&address, result->ai_addr, result->ai_addrlen); + freeaddrinfo(result); + + if (bind(server, (struct sockaddr *)&address, addr_len) < 0) { + perror("bind failed"); + return 1; + } + + if (listen(server, 1) < 0) { + perror("listen"); + return 1; + } + + ksft_ready(); + + client = accept(server, NULL, 0); + if (client < 0) { + perror("accept"); + return 1; + } + + optlen = sizeof(napi_id); + ret = getsockopt(client, SOL_SOCKET, SO_INCOMING_NAPI_ID, &napi_id, + &optlen); + if (ret != 0) { + perror("getsockopt"); + return 1; + } + + read(client, buf, 1024); + + ksft_wait(); + + if (napi_id == 0) { + fprintf(stderr, "napi ID is 0\n"); + return 1; + } + + close(client); + close(server); + + return 0; +} diff --git a/tools/testing/selftests/drivers/net/napi_threaded.py b/tools/testing/selftests/drivers/net/napi_threaded.py new file mode 100755 index 000000000000..f4be72b2145a --- /dev/null +++ b/tools/testing/selftests/drivers/net/napi_threaded.py @@ -0,0 +1,143 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +""" +Test napi threaded states. +""" + +from lib.py import ksft_run, ksft_exit +from lib.py import ksft_eq, ksft_ne, ksft_ge +from lib.py import NetDrvEnv, NetdevFamily +from lib.py import cmd, defer, ethtool + + +def _assert_napi_threaded_enabled(nl, napi_id) -> None: + napi = nl.napi_get({'id': napi_id}) + ksft_eq(napi['threaded'], 'enabled') + ksft_ne(napi.get('pid'), None) + + +def _assert_napi_threaded_disabled(nl, napi_id) -> None: + napi = nl.napi_get({'id': napi_id}) + ksft_eq(napi['threaded'], 'disabled') + ksft_eq(napi.get('pid'), None) + + +def _set_threaded_state(cfg, threaded) -> None: + with open(f"/sys/class/net/{cfg.ifname}/threaded", "wb") as fp: + fp.write(str(threaded).encode('utf-8')) + + +def _setup_deferred_cleanup(cfg) -> None: + combined = ethtool(f"-l {cfg.ifname}", json=True)[0].get("combined", 0) + ksft_ge(combined, 2) + defer(ethtool, f"-L {cfg.ifname} combined {combined}") + + threaded = cmd(f"cat /sys/class/net/{cfg.ifname}/threaded").stdout + defer(_set_threaded_state, cfg, threaded) + + return combined + + +def napi_init(cfg, nl) -> None: + """ + Test that threaded state (in the persistent NAPI config) gets updated + even when NAPI with given ID is not allocated at the time. + """ + + qcnt = _setup_deferred_cleanup(cfg) + + _set_threaded_state(cfg, 1) + cmd(f"ethtool -L {cfg.ifname} combined 1") + _set_threaded_state(cfg, 0) + cmd(f"ethtool -L {cfg.ifname} combined {qcnt}") + + napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True) + for napi in napis: + ksft_eq(napi['threaded'], 'disabled') + ksft_eq(napi.get('pid'), None) + + cmd(f"ethtool -L {cfg.ifname} combined 1") + _set_threaded_state(cfg, 1) + cmd(f"ethtool -L {cfg.ifname} combined {qcnt}") + + napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True) + for napi in napis: + ksft_eq(napi['threaded'], 'enabled') + ksft_ne(napi.get('pid'), None) + + +def enable_dev_threaded_disable_napi_threaded(cfg, nl) -> None: + """ + Test that when napi threaded is enabled at device level and + then disabled at napi level for one napi, the threaded state + of all napis is preserved after a change in number of queues. + """ + + napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True) + ksft_ge(len(napis), 2) + + napi0_id = napis[0]['id'] + napi1_id = napis[1]['id'] + + qcnt = _setup_deferred_cleanup(cfg) + + # set threaded + _set_threaded_state(cfg, 1) + + # check napi threaded is set for both napis + _assert_napi_threaded_enabled(nl, napi0_id) + _assert_napi_threaded_enabled(nl, napi1_id) + + # disable threaded for napi1 + nl.napi_set({'id': napi1_id, 'threaded': 'disabled'}) + + cmd(f"ethtool -L {cfg.ifname} combined 1") + cmd(f"ethtool -L {cfg.ifname} combined {qcnt}") + _assert_napi_threaded_enabled(nl, napi0_id) + _assert_napi_threaded_disabled(nl, napi1_id) + + +def change_num_queues(cfg, nl) -> None: + """ + Test that when napi threaded is enabled at device level, + the napi threaded state is preserved after a change in + number of queues. + """ + + napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True) + ksft_ge(len(napis), 2) + + napi0_id = napis[0]['id'] + napi1_id = napis[1]['id'] + + qcnt = _setup_deferred_cleanup(cfg) + + # set threaded + _set_threaded_state(cfg, 1) + + # check napi threaded is set for both napis + _assert_napi_threaded_enabled(nl, napi0_id) + _assert_napi_threaded_enabled(nl, napi1_id) + + cmd(f"ethtool -L {cfg.ifname} combined 1") + cmd(f"ethtool -L {cfg.ifname} combined {qcnt}") + + # check napi threaded is set for both napis + _assert_napi_threaded_enabled(nl, napi0_id) + _assert_napi_threaded_enabled(nl, napi1_id) + + +def main() -> None: + """ Ksft boiler plate main """ + + with NetDrvEnv(__file__, queue_count=2) as cfg: + ksft_run([napi_init, + change_num_queues, + enable_dev_threaded_disable_napi_threaded], + args=(cfg, NetdevFamily())) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/netcons_basic.sh b/tools/testing/selftests/drivers/net/netcons_basic.sh new file mode 100755 index 000000000000..2022f3061738 --- /dev/null +++ b/tools/testing/selftests/drivers/net/netcons_basic.sh @@ -0,0 +1,74 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: GPL-2.0 + +# This test creates two netdevsim virtual interfaces, assigns one of them (the +# "destination interface") to a new namespace, and assigns IP addresses to both +# interfaces. +# +# It listens on the destination interface using socat and configures a dynamic +# target on netconsole, pointing to the destination IP address. +# +# Finally, it checks whether the message was received properly on the +# destination interface. Note that this test may pollute the kernel log buffer +# (dmesg) and relies on dynamic configuration and namespaces being configured. +# +# Author: Breno Leitao <leitao@debian.org> + +set -euo pipefail + +SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") + +source "${SCRIPTDIR}"/lib/sh/lib_netcons.sh + +modprobe netdevsim 2> /dev/null || true +modprobe netconsole 2> /dev/null || true + +# The content of kmsg will be save to the following file +OUTPUT_FILE="/tmp/${TARGET}" + +# Check for basic system dependency and exit if not found +check_for_dependencies +# Remove the namespace, interfaces and netconsole target on exit +trap cleanup EXIT + +# Run the test twice, with different format modes +for FORMAT in "basic" "extended" +do + for IP_VERSION in "ipv6" "ipv4" + do + echo "Running with target mode: ${FORMAT} (${IP_VERSION})" + # Set current loglevel to KERN_INFO(6), and default to + # KERN_NOTICE(5) + echo "6 5" > /proc/sys/kernel/printk + # Create one namespace and two interfaces + set_network "${IP_VERSION}" + # Create a dynamic target for netconsole + create_dynamic_target "${FORMAT}" + # Only set userdata for extended format + if [ "$FORMAT" == "extended" ] + then + # Set userdata "key" with the "value" value + set_user_data + fi + # Listed for netconsole port inside the namespace and + # destination interface + listen_port_and_save_to "${OUTPUT_FILE}" "${IP_VERSION}" & + # Wait for socat to start and listen to the port. + wait_for_port "${NAMESPACE}" "${PORT}" "${IP_VERSION}" + # Send the message + echo "${MSG}: ${TARGET}" > /dev/kmsg + # Wait until socat saves the file to disk + busywait "${BUSYWAIT_TIMEOUT}" test -s "${OUTPUT_FILE}" + + # Make sure the message was received in the dst part + # and exit + validate_result "${OUTPUT_FILE}" "${FORMAT}" + # kill socat in case it is still running + pkill_socat + cleanup + echo "${FORMAT} : ${IP_VERSION} : Test passed" >&2 + done +done + +trap - EXIT +exit "${ksft_pass}" diff --git a/tools/testing/selftests/drivers/net/netcons_cmdline.sh b/tools/testing/selftests/drivers/net/netcons_cmdline.sh new file mode 100755 index 000000000000..d1d23dc67f99 --- /dev/null +++ b/tools/testing/selftests/drivers/net/netcons_cmdline.sh @@ -0,0 +1,65 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: GPL-2.0 + +# This is a selftest to test cmdline arguments on netconsole. +# It exercises loading of netconsole from cmdline instead of the dynamic +# reconfiguration. This includes parsing the long netconsole= line and all the +# flow through init_netconsole(). +# +# Author: Breno Leitao <leitao@debian.org> + +set -euo pipefail + +SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") + +source "${SCRIPTDIR}"/lib/sh/lib_netcons.sh + +check_netconsole_module + +modprobe netdevsim 2> /dev/null || true +rmmod netconsole 2> /dev/null || true + +# Check for basic system dependency and exit if not found +# check_for_dependencies +# Set current loglevel to KERN_INFO(6), and default to KERN_NOTICE(5) +echo "6 5" > /proc/sys/kernel/printk +# Remove the namespace and network interfaces +trap do_cleanup EXIT +# Create one namespace and two interfaces +set_network + +# Run the test twice, with different cmdline parameters +for BINDMODE in "ifname" "mac" +do + echo "Running with bind mode: ${BINDMODE}" >&2 + # Create the command line for netconsole, with the configuration from + # the function above + CMDLINE=$(create_cmdline_str "${BINDMODE}") + + # The content of kmsg will be save to the following file + OUTPUT_FILE="/tmp/${TARGET}-${BINDMODE}" + + # Load the module, with the cmdline set + modprobe netconsole "${CMDLINE}" + + # Listed for netconsole port inside the namespace and destination + # interface + listen_port_and_save_to "${OUTPUT_FILE}" & + # Wait for socat to start and listen to the port. + wait_local_port_listen "${NAMESPACE}" "${PORT}" udp + # Send the message + echo "${MSG}: ${TARGET}" > /dev/kmsg + # Wait until socat saves the file to disk + busywait "${BUSYWAIT_TIMEOUT}" test -s "${OUTPUT_FILE}" + # Make sure the message was received in the dst part + # and exit + validate_msg "${OUTPUT_FILE}" + + # kill socat in case it is still running + pkill_socat + # Unload the module + rmmod netconsole + echo "${BINDMODE} : Test passed" >&2 +done + +exit "${ksft_pass}" diff --git a/tools/testing/selftests/drivers/net/netcons_fragmented_msg.sh b/tools/testing/selftests/drivers/net/netcons_fragmented_msg.sh new file mode 100755 index 000000000000..4a71e01a230c --- /dev/null +++ b/tools/testing/selftests/drivers/net/netcons_fragmented_msg.sh @@ -0,0 +1,122 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: GPL-2.0 + +# Test netconsole's message fragmentation functionality. +# +# When a message exceeds the maximum packet size, netconsole splits it into +# multiple fragments for transmission. This test verifies: +# - Correct fragmentation of large messages +# - Proper reassembly of fragments at the receiver +# - Preservation of userdata across fragments +# - Behavior with and without kernel release version appending +# +# Author: Breno Leitao <leitao@debian.org> + +set -euo pipefail + +SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") + +source "${SCRIPTDIR}"/lib/sh/lib_netcons.sh + +modprobe netdevsim 2> /dev/null || true +modprobe netconsole 2> /dev/null || true + +# The content of kmsg will be save to the following file +OUTPUT_FILE="/tmp/${TARGET}" + +# set userdata to a long value. In this case, it is "1-2-3-4...50-" +USERDATA_VALUE=$(printf -- '%.2s-' {1..60}) + +# Convert the header string in a regexp, so, we can remove +# the second header as well. +# A header looks like "13,468,514729715,-,ncfrag=0/1135;". If +# release is appended, you might find something like:L +# "6.13.0-04048-g4f561a87745a,13,468,514729715,-,ncfrag=0/1135;" +function header_to_regex() { + # header is everything before ; + local HEADER="${1}" + REGEX=$(echo "${HEADER}" | cut -d'=' -f1) + echo "${REGEX}=[0-9]*\/[0-9]*;" +} + +# We have two headers in the message. Remove both to get the full message, +# and extract the full message. +function extract_msg() { + local MSGFILE="${1}" + # Extract the header, which is the very first thing that arrives in the + # first list. + HEADER=$(sed -n '1p' "${MSGFILE}" | cut -d';' -f1) + HEADER_REGEX=$(header_to_regex "${HEADER}") + + # Remove the two headers from the received message + # This will return the message without any header, similarly to what + # was sent. + sed "s/""${HEADER_REGEX}""//g" "${MSGFILE}" +} + +# Validate the message, which has two messages glued together. +# unwrap them to make sure all the characters were transmitted. +# File will look like the following: +# 13,468,514729715,-,ncfrag=0/1135;<message> +# key=<part of key>-13,468,514729715,-,ncfrag=967/1135;<rest of the key> +function validate_fragmented_result() { + # Discard the netconsole headers, and assemble the full message + RCVMSG=$(extract_msg "${1}") + + # check for the main message + if ! echo "${RCVMSG}" | grep -q "${MSG}"; then + echo "Message body doesn't match." >&2 + echo "msg received=" "${RCVMSG}" >&2 + exit "${ksft_fail}" + fi + + # check userdata + if ! echo "${RCVMSG}" | grep -q "${USERDATA_VALUE}"; then + echo "message userdata doesn't match" >&2 + echo "msg received=" "${RCVMSG}" >&2 + exit "${ksft_fail}" + fi + # test passed. hooray +} + +# Check for basic system dependency and exit if not found +check_for_dependencies +# Set current loglevel to KERN_INFO(6), and default to KERN_NOTICE(5) +echo "6 5" > /proc/sys/kernel/printk +# Remove the namespace, interfaces and netconsole target on exit +trap cleanup EXIT +# Create one namespace and two interfaces +set_network +# Create a dynamic target for netconsole +create_dynamic_target +# Set userdata "key" with the "value" value +set_user_data + + +# TEST 1: Send message and userdata. They will fragment +# ======= +MSG=$(printf -- 'MSG%.3s=' {1..150}) + +# Listen for netconsole port inside the namespace and destination interface +listen_port_and_save_to "${OUTPUT_FILE}" & +# Wait for socat to start and listen to the port. +wait_local_port_listen "${NAMESPACE}" "${PORT}" udp +# Send the message +echo "${MSG}: ${TARGET}" > /dev/kmsg +# Wait until socat saves the file to disk +busywait "${BUSYWAIT_TIMEOUT}" test -s "${OUTPUT_FILE}" +# Check if the message was not corrupted +validate_fragmented_result "${OUTPUT_FILE}" + +# TEST 2: Test with smaller message, and without release appended +# ======= +MSG=$(printf -- 'FOOBAR%.3s=' {1..100}) +# Let's disable release and test again. +disable_release_append + +listen_port_and_save_to "${OUTPUT_FILE}" & +wait_local_port_listen "${NAMESPACE}" "${PORT}" udp +echo "${MSG}: ${TARGET}" > /dev/kmsg +busywait "${BUSYWAIT_TIMEOUT}" test -s "${OUTPUT_FILE}" +validate_fragmented_result "${OUTPUT_FILE}" +exit "${ksft_pass}" diff --git a/tools/testing/selftests/drivers/net/netcons_overflow.sh b/tools/testing/selftests/drivers/net/netcons_overflow.sh new file mode 100755 index 000000000000..06089643b771 --- /dev/null +++ b/tools/testing/selftests/drivers/net/netcons_overflow.sh @@ -0,0 +1,67 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: GPL-2.0 + +# This test verifies that users can successfully create up to +# MAX_USERDATA_ITEMS userdata entries without encountering any failures. +# +# Additionally, it tests for expected failure when attempting to exceed this +# maximum limit. +# +# Author: Breno Leitao <leitao@debian.org> + +set -euo pipefail + +SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") + +source "${SCRIPTDIR}"/lib/sh/lib_netcons.sh +# This is coming from netconsole code. Check for it in drivers/net/netconsole.c +MAX_USERDATA_ITEMS=256 + +# Function to create userdata entries +function create_userdata_max_entries() { + # All these keys should be created without any error + for i in $(seq $MAX_USERDATA_ITEMS) + do + # USERDATA_KEY is used by set_user_data + USERDATA_KEY="key"${i} + set_user_data + done +} + +# Function to verify the entry limit +function verify_entry_limit() { + # Allowing the test to fail without exiting, since the next command + # will fail + set +e + mkdir "${NETCONS_PATH}/userdata/key_that_will_fail" 2> /dev/null + ret="$?" + set -e + if [ "$ret" -eq 0 ]; + then + echo "Adding more than ${MAX_USERDATA_ITEMS} entries in userdata should fail, but it didn't" >&2 + ls "${NETCONS_PATH}/userdata/" >&2 + exit "${ksft_fail}" + fi +} + +# ========== # +# Start here # +# ========== # + +modprobe netdevsim 2> /dev/null || true +modprobe netconsole 2> /dev/null || true + +# Check for basic system dependency and exit if not found +check_for_dependencies + +# Remove the namespace, interfaces and netconsole target on exit +trap cleanup EXIT +# Create one namespace and two interfaces +set_network +# Create a dynamic target for netconsole +create_dynamic_target +# populate the maximum number of supported keys in userdata +create_userdata_max_entries +# Verify an additional entry is not allowed +verify_entry_limit +exit "${ksft_pass}" diff --git a/tools/testing/selftests/drivers/net/netcons_sysdata.sh b/tools/testing/selftests/drivers/net/netcons_sysdata.sh new file mode 100755 index 000000000000..baf69031089e --- /dev/null +++ b/tools/testing/selftests/drivers/net/netcons_sysdata.sh @@ -0,0 +1,272 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: GPL-2.0 + +# A test that makes sure that sysdata runtime CPU data is properly set +# when a message is sent. +# +# There are 3 different tests, every time sent using a random CPU. +# - Test #1 +# * Only enable cpu_nr sysdata feature. +# - Test #2 +# * Keep cpu_nr sysdata feature enable and enable userdata. +# - Test #3 +# * keep userdata enabled, and disable sysdata cpu_nr feature. +# +# Author: Breno Leitao <leitao@debian.org> + +set -euo pipefail + +SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") + +source "${SCRIPTDIR}"/lib/sh/lib_netcons.sh + +# Enable the sysdata cpu_nr feature +function set_cpu_nr() { + if [[ ! -f "${NETCONS_PATH}/userdata/cpu_nr_enabled" ]] + then + echo "Populate CPU configfs path not available in ${NETCONS_PATH}/userdata/cpu_nr_enabled" >&2 + exit "${ksft_skip}" + fi + + echo 1 > "${NETCONS_PATH}/userdata/cpu_nr_enabled" +} + +# Enable the taskname to be appended to sysdata +function set_taskname() { + if [[ ! -f "${NETCONS_PATH}/userdata/taskname_enabled" ]] + then + echo "Not able to enable taskname sysdata append. Configfs not available in ${NETCONS_PATH}/userdata/taskname_enabled" >&2 + exit "${ksft_skip}" + fi + + echo 1 > "${NETCONS_PATH}/userdata/taskname_enabled" +} + +# Enable the release to be appended to sysdata +function set_release() { + if [[ ! -f "${NETCONS_PATH}/userdata/release_enabled" ]] + then + echo "Not able to enable release sysdata append. Configfs not available in ${NETCONS_PATH}/userdata/release_enabled" >&2 + exit "${ksft_skip}" + fi + + echo 1 > "${NETCONS_PATH}/userdata/release_enabled" +} + +# Enable the msgid to be appended to sysdata +function set_msgid() { + if [[ ! -f "${NETCONS_PATH}/userdata/msgid_enabled" ]] + then + echo "Not able to enable msgid sysdata append. Configfs not available in ${NETCONS_PATH}/userdata/msgid_enabled" >&2 + exit "${ksft_skip}" + fi + + echo 1 > "${NETCONS_PATH}/userdata/msgid_enabled" +} + +# Disable the sysdata cpu_nr feature +function unset_cpu_nr() { + echo 0 > "${NETCONS_PATH}/userdata/cpu_nr_enabled" +} + +# Once called, taskname=<..> will not be appended anymore +function unset_taskname() { + echo 0 > "${NETCONS_PATH}/userdata/taskname_enabled" +} + +function unset_release() { + echo 0 > "${NETCONS_PATH}/userdata/release_enabled" +} + +function unset_msgid() { + echo 0 > "${NETCONS_PATH}/userdata/msgid_enabled" +} + +# Test if MSG contains sysdata +function validate_sysdata() { + # OUTPUT_FILE will contain something like: + # 6.11.1-0_fbk0_rc13_509_g30d75cea12f7,13,1822,115075213798,-;netconsole selftest: netcons_gtJHM + # userdatakey=userdatavalue + # cpu=X + # taskname=<taskname> + # msgid=<id> + + # Echo is what this test uses to create the message. See runtest() + # function + SENDER="echo" + + if [ ! -f "$OUTPUT_FILE" ]; then + echo "FAIL: File was not generated." >&2 + exit "${ksft_fail}" + fi + + if ! grep -q "${MSG}" "${OUTPUT_FILE}"; then + echo "FAIL: ${MSG} not found in ${OUTPUT_FILE}" >&2 + cat "${OUTPUT_FILE}" >&2 + exit "${ksft_fail}" + fi + + # Check if cpu=XX exists in the file and matches the one used + # in taskset(1) + if ! grep -q "cpu=${CPU}\+" "${OUTPUT_FILE}"; then + echo "FAIL: 'cpu=${CPU}' not found in ${OUTPUT_FILE}" >&2 + cat "${OUTPUT_FILE}" >&2 + exit "${ksft_fail}" + fi + + if ! grep -q "taskname=${SENDER}" "${OUTPUT_FILE}"; then + echo "FAIL: 'taskname=echo' not found in ${OUTPUT_FILE}" >&2 + cat "${OUTPUT_FILE}" >&2 + exit "${ksft_fail}" + fi + + if ! grep -q "msgid=[0-9]\+$" "${OUTPUT_FILE}"; then + echo "FAIL: 'msgid=<id>' not found in ${OUTPUT_FILE}" >&2 + cat "${OUTPUT_FILE}" >&2 + exit "${ksft_fail}" + fi + + rm "${OUTPUT_FILE}" + pkill_socat +} + +function validate_release() { + RELEASE=$(uname -r) + + if [ ! -f "$OUTPUT_FILE" ]; then + echo "FAIL: File was not generated." >&2 + exit "${ksft_fail}" + fi + + if ! grep -q "release=${RELEASE}" "${OUTPUT_FILE}"; then + echo "FAIL: 'release=${RELEASE}' not found in ${OUTPUT_FILE}" >&2 + cat "${OUTPUT_FILE}" >&2 + exit "${ksft_fail}" + fi +} + +# Test if MSG content exists in OUTPUT_FILE but no `cpu=` and `taskname=` +# strings +function validate_no_sysdata() { + if [ ! -f "$OUTPUT_FILE" ]; then + echo "FAIL: File was not generated." >&2 + exit "${ksft_fail}" + fi + + if ! grep -q "${MSG}" "${OUTPUT_FILE}"; then + echo "FAIL: ${MSG} not found in ${OUTPUT_FILE}" >&2 + cat "${OUTPUT_FILE}" >&2 + exit "${ksft_fail}" + fi + + if grep -q "cpu=" "${OUTPUT_FILE}"; then + echo "FAIL: 'cpu= found in ${OUTPUT_FILE}" >&2 + cat "${OUTPUT_FILE}" >&2 + exit "${ksft_fail}" + fi + + if grep -q "taskname=" "${OUTPUT_FILE}"; then + echo "FAIL: 'taskname= found in ${OUTPUT_FILE}" >&2 + cat "${OUTPUT_FILE}" >&2 + exit "${ksft_fail}" + fi + + if grep -q "release=" "${OUTPUT_FILE}"; then + echo "FAIL: 'release= found in ${OUTPUT_FILE}" >&2 + cat "${OUTPUT_FILE}" >&2 + exit "${ksft_fail}" + fi + + if grep -q "msgid=" "${OUTPUT_FILE}"; then + echo "FAIL: 'msgid= found in ${OUTPUT_FILE}" >&2 + cat "${OUTPUT_FILE}" >&2 + exit "${ksft_fail}" + fi + + rm "${OUTPUT_FILE}" +} + +# Start socat, send the message and wait for the file to show up in the file +# system +function runtest { + # Listen for netconsole port inside the namespace and destination + # interface + listen_port_and_save_to "${OUTPUT_FILE}" & + # Wait for socat to start and listen to the port. + wait_local_port_listen "${NAMESPACE}" "${PORT}" udp + # Send the message + taskset -c "${CPU}" echo "${MSG}: ${TARGET}" > /dev/kmsg + # Wait until socat saves the file to disk + busywait "${BUSYWAIT_TIMEOUT}" test -s "${OUTPUT_FILE}" +} + +# ========== # +# Start here # +# ========== # + +modprobe netdevsim 2> /dev/null || true +modprobe netconsole 2> /dev/null || true + +# Check for basic system dependency and exit if not found +check_for_dependencies +# This test also depends on taskset(1). Check for it before starting the test +check_for_taskset + +# Set current loglevel to KERN_INFO(6), and default to KERN_NOTICE(5) +echo "6 5" > /proc/sys/kernel/printk +# Remove the namespace, interfaces and netconsole target on exit +trap cleanup EXIT +# Create one namespace and two interfaces +set_network +# Create a dynamic target for netconsole +create_dynamic_target + +#==================================================== +# TEST #1 +# Send message from a random CPU +#==================================================== +# Random CPU in the system +CPU=$((RANDOM % $(nproc))) +OUTPUT_FILE="/tmp/${TARGET}_1" +MSG="Test #1 from CPU${CPU}" +# Enable the auto population of cpu_nr +set_cpu_nr +# Enable taskname to be appended to sysdata +set_taskname +set_release +set_msgid +runtest +# Make sure the message was received in the dst part +# and exit +validate_release +validate_sysdata + +#==================================================== +# TEST #2 +# This test now adds userdata together with sysdata +# =================================================== +# Get a new random CPU +CPU=$((RANDOM % $(nproc))) +OUTPUT_FILE="/tmp/${TARGET}_2" +MSG="Test #2 from CPU${CPU}" +set_user_data +runtest +validate_release +validate_sysdata + +# =================================================== +# TEST #3 +# Unset all sysdata, fail if any userdata is set +# =================================================== +CPU=$((RANDOM % $(nproc))) +OUTPUT_FILE="/tmp/${TARGET}_3" +MSG="Test #3 from CPU${CPU}" +unset_cpu_nr +unset_taskname +unset_release +unset_msgid +runtest +# At this time, cpu= shouldn't be present in the msg +validate_no_sysdata + +exit "${ksft_pass}" diff --git a/tools/testing/selftests/drivers/net/netcons_torture.sh b/tools/testing/selftests/drivers/net/netcons_torture.sh new file mode 100755 index 000000000000..2ce9ee3719d1 --- /dev/null +++ b/tools/testing/selftests/drivers/net/netcons_torture.sh @@ -0,0 +1,130 @@ +#!/usr/bin/env bash +# SPDX-License-Identifier: GPL-2.0 + +# Repeatedly send kernel messages, toggles netconsole targets on and off, +# creates and deletes targets in parallel, and toggles the source interface to +# simulate stress conditions. +# +# This test aims to verify the robustness of netconsole under dynamic +# configurations and concurrent operations. +# +# The major goal is to run this test with LOCKDEP, Kmemleak and KASAN to make +# sure no issues is reported. +# +# Author: Breno Leitao <leitao@debian.org> + +set -euo pipefail + +SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") + +source "${SCRIPTDIR}"/lib/sh/lib_netcons.sh + +# Number of times the main loop run +ITERATIONS=${1:-150} + +# Only test extended format +FORMAT="extended" +# And ipv6 only +IP_VERSION="ipv6" + +# Create, enable and delete some targets. +create_and_delete_random_target() { + COUNT=2 + RND_PREFIX=$(mktemp -u netcons_rnd_XXXX_) + + if [ -d "${NETCONS_CONFIGFS}/${RND_PREFIX}${COUNT}" ] || \ + [ -d "${NETCONS_CONFIGFS}/${RND_PREFIX}0" ]; then + echo "Function didn't finish yet, skipping it." >&2 + return + fi + + # enable COUNT targets + for i in $(seq ${COUNT}) + do + RND_TARGET="${RND_PREFIX}"${i} + RND_TARGET_PATH="${NETCONS_CONFIGFS}"/"${RND_TARGET}" + + # Basic population so the target can come up + _create_dynamic_target "${FORMAT}" "${RND_TARGET_PATH}" + done + + echo "netconsole selftest: ${COUNT} additional targets were created" > /dev/kmsg + # disable them all + for i in $(seq ${COUNT}) + do + RND_TARGET="${RND_PREFIX}"${i} + RND_TARGET_PATH="${NETCONS_CONFIGFS}"/"${RND_TARGET}" + if [[ $(cat "${RND_TARGET_PATH}/enabled") -eq 1 ]] + then + echo 0 > "${RND_TARGET_PATH}"/enabled + fi + rmdir "${RND_TARGET_PATH}" + done +} + +# Disable and enable the target mid-air, while messages +# are being transmitted. +toggle_netcons_target() { + for i in $(seq 2) + do + if [ ! -d "${NETCONS_PATH}" ] + then + break + fi + echo 0 > "${NETCONS_PATH}"/enabled 2> /dev/null || true + # Try to enable a bit harder, given it might fail to enable + # Write to `enabled` might fail depending on the lock, which is + # highly contentious here + for _ in $(seq 5) + do + echo 1 > "${NETCONS_PATH}"/enabled 2> /dev/null || true + done + done +} + +toggle_iface(){ + ip link set "${SRCIF}" down + ip link set "${SRCIF}" up +} + +# Start here + +modprobe netdevsim 2> /dev/null || true +modprobe netconsole 2> /dev/null || true + +# Check for basic system dependency and exit if not found +check_for_dependencies +# Set current loglevel to KERN_INFO(6), and default to KERN_NOTICE(5) +echo "6 5" > /proc/sys/kernel/printk +# Remove the namespace, interfaces and netconsole target on exit +trap cleanup EXIT +# Create one namespace and two interfaces +set_network "${IP_VERSION}" +# Create a dynamic target for netconsole +create_dynamic_target "${FORMAT}" + +for i in $(seq "$ITERATIONS") +do + for _ in $(seq 10) + do + echo "${MSG}: ${TARGET} ${i}" > /dev/kmsg + done + wait + + if (( i % 30 == 0 )); then + toggle_netcons_target & + fi + + if (( i % 50 == 0 )); then + # create some targets, enable them, send msg and disable + # all in a parallel thread + create_and_delete_random_target & + fi + + if (( i % 70 == 0 )); then + toggle_iface & + fi +done +wait + +exit "${EXIT_STATUS}" diff --git a/tools/testing/selftests/drivers/net/netdevsim/Makefile b/tools/testing/selftests/drivers/net/netdevsim/Makefile index 5bace0b7fb57..1a228c5430f5 100644 --- a/tools/testing/selftests/drivers/net/netdevsim/Makefile +++ b/tools/testing/selftests/drivers/net/netdevsim/Makefile @@ -1,18 +1,26 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT -TEST_PROGS = devlink.sh \ +TEST_PROGS := \ + devlink.sh \ devlink_in_netns.sh \ devlink_trap.sh \ ethtool-coalesce.sh \ + ethtool-features.sh \ ethtool-fec.sh \ ethtool-pause.sh \ - ethtool-ring.sh \ fib.sh \ + fib_notifications.sh \ hw_stats_l3.sh \ + macsec-offload.sh \ nexthop.sh \ peer.sh \ psample.sh \ tc-mq-visibility.sh \ udp_tunnel_nic.sh \ +# end of TEST_PROGS + +TEST_FILES := \ + ethtool-common.sh +# end of TEST_FILES include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/netdevsim/config b/tools/testing/selftests/drivers/net/netdevsim/config index adf45a3a78b4..5117c78ddf0a 100644 --- a/tools/testing/selftests/drivers/net/netdevsim/config +++ b/tools/testing/selftests/drivers/net/netdevsim/config @@ -1,6 +1,7 @@ CONFIG_DUMMY=y CONFIG_GENEVE=m CONFIG_IPV6=y +CONFIG_MACSEC=m CONFIG_NETDEVSIM=m CONFIG_NET_SCH_MQPRIO=y CONFIG_NET_SCH_MULTIQ=y diff --git a/tools/testing/selftests/drivers/net/netdevsim/devlink.sh b/tools/testing/selftests/drivers/net/netdevsim/devlink.sh index b5ea2526f23c..1b529ccaf050 100755 --- a/tools/testing/selftests/drivers/net/netdevsim/devlink.sh +++ b/tools/testing/selftests/drivers/net/netdevsim/devlink.sh @@ -3,7 +3,8 @@ lib_dir=$(dirname $0)/../../../net/forwarding -ALL_TESTS="fw_flash_test params_test regions_test reload_test \ +ALL_TESTS="fw_flash_test params_test \ + params_default_test regions_test reload_test \ netns_reload_test resource_test dev_info_test \ empty_reporter_test dummy_reporter_test rate_test" NUM_NETIFS=0 @@ -40,6 +41,8 @@ fw_flash_test() return fi + echo "10"> $DEBUGFS_DIR/fw_update_flash_chunk_time_ms + devlink dev flash $DL_HANDLE file $DUMMYFILE check_err $? "Failed to flash with status updates on" @@ -76,17 +79,28 @@ fw_flash_test() param_get() { local name=$1 + local attr=${2:-value} + local cmode=${3:-driverinit} cmd_jq "devlink dev param show $DL_HANDLE name $name -j" \ - '.[][][].values[] | select(.cmode == "driverinit").value' + '.[][][].values[] | select(.cmode == "'"$cmode"'").'"$attr" } param_set() { local name=$1 local value=$2 + local cmode=${3:-driverinit} - devlink dev param set $DL_HANDLE name $name cmode driverinit value $value + devlink dev param set $DL_HANDLE name $name cmode $cmode value $value +} + +param_set_default() +{ + local name=$1 + local cmode=${2:-driverinit} + + devlink dev param set $DL_HANDLE name $name default cmode $cmode } check_value() @@ -95,12 +109,18 @@ check_value() local phase_name=$2 local expected_param_value=$3 local expected_debugfs_value=$4 + local cmode=${5:-driverinit} local value + local attr="value" + + if [[ "$phase_name" == *"default"* ]]; then + attr="default" + fi - value=$(param_get $name) - check_err $? "Failed to get $name param value" + value=$(param_get $name $attr $cmode) + check_err $? "Failed to get $name param $attr" [ "$value" == "$expected_param_value" ] - check_err $? "Unexpected $phase_name $name param value" + check_err $? "Unexpected $phase_name $name param $attr" value=$(<$DEBUGFS_DIR/$name) check_err $? "Failed to get $name debugfs value" [ "$value" == "$expected_debugfs_value" ] @@ -133,6 +153,92 @@ params_test() log_test "params test" } +value_to_debugfs() +{ + local value=$1 + + case "$value" in + true) + echo "Y" + ;; + false) + echo "N" + ;; + *) + echo "$value" + ;; + esac +} + +test_default() +{ + local param_name=$1 + local new_value=$2 + local expected_default=$3 + local cmode=${4:-driverinit} + local default_debugfs + local new_debugfs + local expected_debugfs + + default_debugfs=$(value_to_debugfs $expected_default) + new_debugfs=$(value_to_debugfs $new_value) + + expected_debugfs=$default_debugfs + check_value $param_name initial-default $expected_default $expected_debugfs $cmode + + param_set $param_name $new_value $cmode + check_err $? "Failed to set $param_name to $new_value" + + expected_debugfs=$([ "$cmode" == "runtime" ] && echo "$new_debugfs" || echo "$default_debugfs") + check_value $param_name post-set $new_value $expected_debugfs $cmode + + devlink dev reload $DL_HANDLE + check_err $? "Failed to reload device" + + expected_debugfs=$new_debugfs + check_value $param_name post-reload-new-value $new_value $expected_debugfs $cmode + + param_set_default $param_name $cmode + check_err $? "Failed to set $param_name to default" + + expected_debugfs=$([ "$cmode" == "runtime" ] && echo "$default_debugfs" || echo "$new_debugfs") + check_value $param_name post-set-default $expected_default $expected_debugfs $cmode + + devlink dev reload $DL_HANDLE + check_err $? "Failed to reload device" + + expected_debugfs=$default_debugfs + check_value $param_name post-reload-default $expected_default $expected_debugfs $cmode +} + +params_default_test() +{ + RET=0 + + if ! devlink dev param help 2>&1 | grep -q "value VALUE | default"; then + echo "SKIP: devlink cli missing default feature" + return + fi + + # Remove side effects of previous tests. Use plain param_set, because + # param_set_default is a feature under test here. + param_set max_macs 32 driverinit + check_err $? "Failed to reset max_macs to default value" + param_set test1 true driverinit + check_err $? "Failed to reset test1 to default value" + param_set test2 1234 runtime + check_err $? "Failed to reset test2 to default value" + + devlink dev reload $DL_HANDLE + check_err $? "Failed to reload device for clean state" + + test_default max_macs 16 32 driverinit + test_default test1 false true driverinit + test_default test2 100 1234 runtime + + log_test "params default test" +} + check_region_size() { local name=$1 @@ -608,6 +714,46 @@ rate_attr_parent_check() check_err $? "Unexpected parent attr value $api_value != $parent" } +rate_attr_tc_bw_check() +{ + local handle=$1 + local tc_bw=$2 + local debug_file=$3 + + local tc_bw_str="" + for bw in $tc_bw; do + local tc=${bw%%:*} + local value=${bw##*:} + tc_bw_str="$tc_bw_str $tc:$value" + done + tc_bw_str=${tc_bw_str# } + + rate_attr_set "$handle" tc-bw "$tc_bw_str" + check_err $? "Failed to set tc-bw values" + + for bw in $tc_bw; do + local tc=${bw%%:*} + local value=${bw##*:} + local debug_value + debug_value=$(cat "$debug_file"/tc"${tc}"_bw) + check_err $? "Failed to read tc-bw value from debugfs for tc$tc" + [ "$debug_value" == "$value" ] + check_err $? "Unexpected tc-bw debug value for tc$tc: $debug_value != $value" + done + + for bw in $tc_bw; do + local tc=${bw%%:*} + local expected_value=${bw##*:} + local api_value + api_value=$(rate_attr_get "$handle" tc_"$tc") + if [ "$api_value" = "null" ]; then + api_value=0 + fi + [ "$api_value" == "$expected_value" ] + check_err $? "Unexpected tc-bw value for tc$tc: $api_value != $expected_value" + done +} + rate_node_add() { local handle=$1 @@ -649,6 +795,13 @@ rate_test() rate=$(($rate+100)) done + local tc_bw="0:0 1:40 2:0 3:0 4:0 5:0 6:60 7:0" + for r_obj in $leafs + do + rate_attr_tc_bw_check "$r_obj" "$tc_bw" \ + "$DEBUGFS_DIR"/ports/"${r_obj##*/}" + done + local node1_name='group1' local node1="$DL_HANDLE/$node1_name" rate_node_add "$node1" @@ -666,6 +819,12 @@ rate_test() rate_attr_tx_rate_check $node1 tx_max $node_tx_max \ $DEBUGFS_DIR/rate_nodes/${node1##*/}/tx_max + + local tc_bw="0:20 1:0 2:0 3:0 4:0 5:20 6:60 7:0" + rate_attr_tc_bw_check $node1 "$tc_bw" \ + "$DEBUGFS_DIR"/rate_nodes/"${node1##*/}" + + rate_node_del "$node1" check_err $? "Failed to delete node $node1" local num_nodes=`rate_nodes_get $DL_HANDLE | wc -w` diff --git a/tools/testing/selftests/drivers/net/netdevsim/ethtool-features.sh b/tools/testing/selftests/drivers/net/netdevsim/ethtool-features.sh new file mode 100644 index 000000000000..bc210dc6ad2d --- /dev/null +++ b/tools/testing/selftests/drivers/net/netdevsim/ethtool-features.sh @@ -0,0 +1,31 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0-only + +source ethtool-common.sh + +NSIM_NETDEV=$(make_netdev) + +set -o pipefail + +FEATS=" + tx-checksum-ip-generic + tx-scatter-gather + tx-tcp-segmentation + generic-segmentation-offload + generic-receive-offload" + +for feat in $FEATS ; do + s=$(ethtool --json -k $NSIM_NETDEV | jq ".[].\"$feat\".active" 2>/dev/null) + check $? "$s" true + + s=$(ethtool --json -k $NSIM_NETDEV | jq ".[].\"$feat\".fixed" 2>/dev/null) + check $? "$s" false +done + +if [ $num_errors -eq 0 ]; then + echo "PASSED all $((num_passes)) checks" + exit 0 +else + echo "FAILED $num_errors/$((num_errors+num_passes)) checks" + exit 1 +fi diff --git a/tools/testing/selftests/drivers/net/netdevsim/ethtool-ring.sh b/tools/testing/selftests/drivers/net/netdevsim/ethtool-ring.sh deleted file mode 100755 index c969559ffa7a..000000000000 --- a/tools/testing/selftests/drivers/net/netdevsim/ethtool-ring.sh +++ /dev/null @@ -1,85 +0,0 @@ -#!/bin/bash -# SPDX-License-Identifier: GPL-2.0-only - -source ethtool-common.sh - -function get_value { - local query="${SETTINGS_MAP[$1]}" - - echo $(ethtool -g $NSIM_NETDEV | \ - tail -n +$CURR_SETT_LINE | \ - awk -F':' -v pattern="$query:" '$0 ~ pattern {gsub(/[\t ]/, "", $2); print $2}') -} - -function update_current_settings { - for key in ${!SETTINGS_MAP[@]}; do - CURRENT_SETTINGS[$key]=$(get_value $key) - done - echo ${CURRENT_SETTINGS[@]} -} - -if ! ethtool -h | grep -q set-ring >/dev/null; then - echo "SKIP: No --set-ring support in ethtool" - exit 4 -fi - -NSIM_NETDEV=$(make_netdev) - -set -o pipefail - -declare -A SETTINGS_MAP=( - ["rx"]="RX" - ["rx-mini"]="RX Mini" - ["rx-jumbo"]="RX Jumbo" - ["tx"]="TX" -) - -declare -A EXPECTED_SETTINGS=( - ["rx"]="" - ["rx-mini"]="" - ["rx-jumbo"]="" - ["tx"]="" -) - -declare -A CURRENT_SETTINGS=( - ["rx"]="" - ["rx-mini"]="" - ["rx-jumbo"]="" - ["tx"]="" -) - -MAX_VALUE=$((RANDOM % $((2**32-1)))) -RING_MAX_LIST=$(ls $NSIM_DEV_DFS/ethtool/ring/) - -for ring_max_entry in $RING_MAX_LIST; do - echo $MAX_VALUE > $NSIM_DEV_DFS/ethtool/ring/$ring_max_entry -done - -CURR_SETT_LINE=$(ethtool -g $NSIM_NETDEV | grep -i -m1 -n 'Current hardware settings' | cut -f1 -d:) - -# populate the expected settings map -for key in ${!SETTINGS_MAP[@]}; do - EXPECTED_SETTINGS[$key]=$(get_value $key) -done - -# test -for key in ${!SETTINGS_MAP[@]}; do - value=$((RANDOM % $MAX_VALUE)) - - ethtool -G $NSIM_NETDEV "$key" "$value" - - EXPECTED_SETTINGS[$key]="$value" - expected=${EXPECTED_SETTINGS[@]} - current=$(update_current_settings) - - check $? "$current" "$expected" - set +x -done - -if [ $num_errors -eq 0 ]; then - echo "PASSED all $((num_passes)) checks" - exit 0 -else - echo "FAILED $num_errors/$((num_errors+num_passes)) checks" - exit 1 -fi diff --git a/tools/testing/selftests/drivers/net/netdevsim/fib_notifications.sh b/tools/testing/selftests/drivers/net/netdevsim/fib_notifications.sh index 8d91191a098c..9896580c3d85 100755 --- a/tools/testing/selftests/drivers/net/netdevsim/fib_notifications.sh +++ b/tools/testing/selftests/drivers/net/netdevsim/fib_notifications.sh @@ -94,7 +94,7 @@ route_addition_check() sleep 1 $IP route add $route dev dummy1 sleep 1 - kill %% && wait %% &> /dev/null + kill_process %% route_notify_check $outfile $expected_num_notifications $offload_failed rm -f $outfile @@ -148,7 +148,7 @@ route_deletion_check() sleep 1 $IP route del $route dev dummy1 sleep 1 - kill %% && wait %% &> /dev/null + kill_process %% route_notify_check $outfile $expected_num_notifications rm -f $outfile @@ -191,7 +191,7 @@ route_replacement_check() sleep 1 $IP route replace $route dev dummy2 sleep 1 - kill %% && wait %% &> /dev/null + kill_process %% route_notify_check $outfile $expected_num_notifications rm -f $outfile diff --git a/tools/testing/selftests/drivers/net/netdevsim/macsec-offload.sh b/tools/testing/selftests/drivers/net/netdevsim/macsec-offload.sh new file mode 100755 index 000000000000..98033e6667d2 --- /dev/null +++ b/tools/testing/selftests/drivers/net/netdevsim/macsec-offload.sh @@ -0,0 +1,117 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0-only + +source ethtool-common.sh + +NSIM_NETDEV=$(make_netdev) +MACSEC_NETDEV=macsec_nsim + +set -o pipefail + +if ! ethtool -k $NSIM_NETDEV | grep -q 'macsec-hw-offload: on'; then + echo "SKIP: netdevsim doesn't support MACsec offload" + exit 4 +fi + +if ! ip link add link $NSIM_NETDEV $MACSEC_NETDEV type macsec offload mac 2>/dev/null; then + echo "SKIP: couldn't create macsec device" + exit 4 +fi +ip link del $MACSEC_NETDEV + +# +# test macsec offload API +# + +ip link add link $NSIM_NETDEV "${MACSEC_NETDEV}" type macsec port 4 offload mac +check $? + +ip link add link $NSIM_NETDEV "${MACSEC_NETDEV}2" type macsec address "aa:bb:cc:dd:ee:ff" port 5 offload mac +check $? + +ip link add link $NSIM_NETDEV "${MACSEC_NETDEV}3" type macsec sci abbacdde01020304 offload mac +check $? + +ip link add link $NSIM_NETDEV "${MACSEC_NETDEV}4" type macsec port 8 offload mac 2> /dev/null +check $? '' '' 1 + +ip macsec add "${MACSEC_NETDEV}" tx sa 0 pn 1024 on key 01 12345678901234567890123456789012 +check $? + +ip macsec add "${MACSEC_NETDEV}" rx port 1234 address "1c:ed:de:ad:be:ef" +check $? + +ip macsec add "${MACSEC_NETDEV}" rx port 1234 address "1c:ed:de:ad:be:ef" sa 0 pn 1 on \ + key 00 0123456789abcdef0123456789abcdef +check $? + +ip macsec add "${MACSEC_NETDEV}" rx port 1235 address "1c:ed:de:ad:be:ef" 2> /dev/null +check $? '' '' 1 + +# can't disable macsec offload when SAs are configured +ip link set "${MACSEC_NETDEV}" type macsec offload off 2> /dev/null +check $? '' '' 1 + +ip macsec offload "${MACSEC_NETDEV}" off 2> /dev/null +check $? '' '' 1 + +# toggle macsec offload via rtnetlink +ip link set "${MACSEC_NETDEV}2" type macsec offload off +check $? + +ip link set "${MACSEC_NETDEV}2" type macsec offload mac +check $? + +# toggle macsec offload via genetlink +ip macsec offload "${MACSEC_NETDEV}2" off +check $? + +ip macsec offload "${MACSEC_NETDEV}2" mac +check $? + +for dev in ${MACSEC_NETDEV}{,2,3} ; do + ip link del $dev + check $? +done + + +# +# test ethtool features when toggling offload +# + +ip link add link $NSIM_NETDEV $MACSEC_NETDEV type macsec offload mac +TMP_FEATS_ON_1="$(ethtool -k $MACSEC_NETDEV)" + +ip link set $MACSEC_NETDEV type macsec offload off +TMP_FEATS_OFF_1="$(ethtool -k $MACSEC_NETDEV)" + +ip link set $MACSEC_NETDEV type macsec offload mac +TMP_FEATS_ON_2="$(ethtool -k $MACSEC_NETDEV)" + +[ "$TMP_FEATS_ON_1" = "$TMP_FEATS_ON_2" ] +check $? + +ip link del $MACSEC_NETDEV + +ip link add link $NSIM_NETDEV $MACSEC_NETDEV type macsec +check $? + +TMP_FEATS_OFF_2="$(ethtool -k $MACSEC_NETDEV)" +[ "$TMP_FEATS_OFF_1" = "$TMP_FEATS_OFF_2" ] +check $? + +ip link set $MACSEC_NETDEV type macsec offload mac +check $? + +TMP_FEATS_ON_3="$(ethtool -k $MACSEC_NETDEV)" +[ "$TMP_FEATS_ON_1" = "$TMP_FEATS_ON_3" ] +check $? + + +if [ $num_errors -eq 0 ]; then + echo "PASSED all $((num_passes)) checks" + exit 0 +else + echo "FAILED $num_errors/$((num_errors+num_passes)) checks" + exit 1 +fi diff --git a/tools/testing/selftests/drivers/net/netdevsim/nexthop.sh b/tools/testing/selftests/drivers/net/netdevsim/nexthop.sh index e8e0dc088d6a..01d0c044a5fc 100755 --- a/tools/testing/selftests/drivers/net/netdevsim/nexthop.sh +++ b/tools/testing/selftests/drivers/net/netdevsim/nexthop.sh @@ -1053,6 +1053,6 @@ trap cleanup EXIT setup_prepare -tests_run +xfail_on_slow tests_run exit $EXIT_STATUS diff --git a/tools/testing/selftests/drivers/net/netdevsim/peer.sh b/tools/testing/selftests/drivers/net/netdevsim/peer.sh index aed62d9e6c0a..7f32b5600925 100755 --- a/tools/testing/selftests/drivers/net/netdevsim/peer.sh +++ b/tools/testing/selftests/drivers/net/netdevsim/peer.sh @@ -1,7 +1,8 @@ #!/bin/bash # SPDX-License-Identifier: GPL-2.0-only -source ../../../net/net_helper.sh +lib_dir=$(dirname $0)/../../../net +source $lib_dir/lib.sh NSIM_DEV_1_ID=$((256 + RANDOM % 256)) NSIM_DEV_1_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_DEV_1_ID diff --git a/tools/testing/selftests/drivers/net/netdevsim/tc-mq-visibility.sh b/tools/testing/selftests/drivers/net/netdevsim/tc-mq-visibility.sh index fd13c8cfb7a8..b411fe66510f 100755 --- a/tools/testing/selftests/drivers/net/netdevsim/tc-mq-visibility.sh +++ b/tools/testing/selftests/drivers/net/netdevsim/tc-mq-visibility.sh @@ -58,9 +58,12 @@ for root in mq mqprio; do ethtool -L $NDEV combined 4 n_child_assert 4 "One real queue, rest default" - # Graft some - tcq replace parent 100:1 handle 204: - n_child_assert 3 "Grafted" + # Remove real one + tcq del parent 100:4 handle 204: + + # Replace default with pfifo + tcq replace parent 100:1 handle 205: pfifo limit 1000 + n_child_assert 3 "Deleting real one, replacing default one with pfifo" ethtool -L $NDEV combined 1 n_child_assert 1 "Grafted, one" diff --git a/tools/testing/selftests/drivers/net/netdevsim/udp_tunnel_nic.sh b/tools/testing/selftests/drivers/net/netdevsim/udp_tunnel_nic.sh index 384cfa3d38a6..4c859ecdad94 100755 --- a/tools/testing/selftests/drivers/net/netdevsim/udp_tunnel_nic.sh +++ b/tools/testing/selftests/drivers/net/netdevsim/udp_tunnel_nic.sh @@ -142,7 +142,7 @@ function pre_ethtool { } function check_table { - local path=$NSIM_DEV_DFS/ports/$port/udp_ports_table$1 + local path=$NSIM_DEV_DFS/ports/$port/udp_ports/table$1 local -n expected=$2 local last=$3 @@ -212,7 +212,7 @@ function check_tables { } function print_table { - local path=$NSIM_DEV_DFS/ports/$port/udp_ports_table$1 + local path=$NSIM_DEV_DFS/ports/$port/udp_ports/table$1 read -a have < $path tree $NSIM_DEV_DFS/ @@ -266,7 +266,6 @@ for port in 0 1; do echo $NSIM_ID > /sys/bus/netdevsim/new_device else echo 1 > $NSIM_DEV_DFS/udp_ports_open_only - echo 1 > $NSIM_DEV_DFS/udp_ports_sleep echo 1 > $NSIM_DEV_SYS/new_port fi NSIM_NETDEV=`get_netdev_name old_netdevs` @@ -350,23 +349,11 @@ old_netdevs=$(ls /sys/class/net) port=0 echo $NSIM_ID > /sys/bus/netdevsim/new_device echo 0 > $NSIM_DEV_SYS/del_port -echo 1000 > $NSIM_DEV_DFS/udp_ports_sleep echo 0 > $NSIM_DEV_SYS/new_port NSIM_NETDEV=`get_netdev_name old_netdevs` msg="create VxLANs" -exp0=( 0 0 0 0 ) # sleep is longer than out wait -new_vxlan vxlan0 10000 $NSIM_NETDEV - -modprobe -r vxlan -modprobe -r udp_tunnel - -msg="remove tunnels" -exp0=( 0 0 0 0 ) -check_tables - -msg="create VxLANs" -exp0=( 0 0 0 0 ) # sleep is longer than out wait +exp0=( `mke 10000 1` 0 0 0 ) new_vxlan vxlan0 10000 $NSIM_NETDEV exp0=( 0 0 0 0 ) @@ -428,7 +415,6 @@ echo 0 > $NSIM_DEV_SYS/del_port for port in 0 1; do if [ $port -ne 0 ]; then echo 1 > $NSIM_DEV_DFS/udp_ports_open_only - echo 1 > $NSIM_DEV_DFS/udp_ports_sleep fi echo $port > $NSIM_DEV_SYS/new_port @@ -486,7 +472,6 @@ echo 1 > $NSIM_DEV_DFS/udp_ports_sync_all for port in 0 1; do if [ $port -ne 0 ]; then echo 1 > $NSIM_DEV_DFS/udp_ports_open_only - echo 1 > $NSIM_DEV_DFS/udp_ports_sleep fi echo $port > $NSIM_DEV_SYS/new_port @@ -543,7 +528,6 @@ echo 0 > $NSIM_DEV_SYS/del_port for port in 0 1; do if [ $port -ne 0 ]; then echo 1 > $NSIM_DEV_DFS/udp_ports_open_only - echo 1 > $NSIM_DEV_DFS/udp_ports_sleep fi echo $port > $NSIM_DEV_SYS/new_port @@ -573,7 +557,6 @@ echo 1 > $NSIM_DEV_DFS/udp_ports_ipv4_only for port in 0 1; do if [ $port -ne 0 ]; then echo 1 > $NSIM_DEV_DFS/udp_ports_open_only - echo 1 > $NSIM_DEV_DFS/udp_ports_sleep fi echo $port > $NSIM_DEV_SYS/new_port @@ -634,14 +617,13 @@ echo 0 > $NSIM_DEV_SYS/del_port for port in 0 1; do if [ $port -ne 0 ]; then echo 1 > $NSIM_DEV_DFS/udp_ports_open_only - echo 1 > $NSIM_DEV_DFS/udp_ports_sleep fi echo $port > $NSIM_DEV_SYS/new_port NSIM_NETDEV=`get_netdev_name old_netdevs` ip link set dev $NSIM_NETDEV up - echo 110 > $NSIM_DEV_DFS/ports/$port/udp_ports_inject_error + echo 110 > $NSIM_DEV_DFS/ports/$port/udp_ports/inject_error msg="1 - create VxLANs v6" exp0=( 0 0 0 0 ) @@ -663,7 +645,7 @@ for port in 0 1; do new_geneve gnv0 20000 msg="2 - destroy GENEVE" - echo 2 > $NSIM_DEV_DFS/ports/$port/udp_ports_inject_error + echo 2 > $NSIM_DEV_DFS/ports/$port/udp_ports/inject_error exp1=( `mke 20000 2` 0 0 0 ) del_dev gnv0 @@ -690,7 +672,6 @@ echo 0 > $NSIM_DEV_SYS/del_port for port in 0 1; do if [ $port -ne 0 ]; then echo 1 > $NSIM_DEV_DFS/udp_ports_open_only - echo 1 > $NSIM_DEV_DFS/udp_ports_sleep fi echo $port > $NSIM_DEV_SYS/new_port @@ -750,7 +731,6 @@ echo 0 > $NSIM_DEV_SYS/del_port for port in 0 1; do if [ $port -ne 0 ]; then echo 1 > $NSIM_DEV_DFS/udp_ports_open_only - echo 1 > $NSIM_DEV_DFS/udp_ports_sleep fi echo $port > $NSIM_DEV_SYS/new_port @@ -764,7 +744,7 @@ for port in 0 1; do msg="create VxLANs v4" new_vxlan vxlan0 10000 $NSIM_NETDEV - echo 1 > $NSIM_DEV_DFS/ports/$port/udp_ports_reset + echo 1 > $NSIM_DEV_DFS/ports/$port/udp_ports/reset check_tables msg="NIC device goes down" @@ -775,7 +755,7 @@ for port in 0 1; do fi check_tables - echo 1 > $NSIM_DEV_DFS/ports/$port/udp_ports_reset + echo 1 > $NSIM_DEV_DFS/ports/$port/udp_ports/reset check_tables msg="NIC device goes up again" @@ -789,7 +769,7 @@ for port in 0 1; do del_dev vxlan0 check_tables - echo 1 > $NSIM_DEV_DFS/ports/$port/udp_ports_reset + echo 1 > $NSIM_DEV_DFS/ports/$port/udp_ports/reset check_tables msg="destroy NIC" @@ -809,7 +789,6 @@ echo $NSIM_ID > /sys/bus/netdevsim/new_device echo 0 > $NSIM_DEV_SYS/del_port echo 0 > $NSIM_DEV_DFS/udp_ports_open_only -echo 1 > $NSIM_DEV_DFS/udp_ports_sleep echo 1 > $NSIM_DEV_DFS/udp_ports_shared old_netdevs=$(ls /sys/class/net) @@ -896,7 +875,7 @@ msg="vacate VxLAN in overflow table" exp0=( `mke 10000 1` `mke 10004 1` 0 `mke 10003 1` ) del_dev vxlan2 -echo 1 > $NSIM_DEV_DFS/ports/$port/udp_ports_reset +echo 1 > $NSIM_DEV_DFS/ports/$port/udp_ports/reset check_tables msg="tunnels destroyed 2" diff --git a/tools/testing/selftests/drivers/net/netpoll_basic.py b/tools/testing/selftests/drivers/net/netpoll_basic.py new file mode 100755 index 000000000000..408bd54d6779 --- /dev/null +++ b/tools/testing/selftests/drivers/net/netpoll_basic.py @@ -0,0 +1,396 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 +# Author: Breno Leitao <leitao@debian.org> +""" + This test aims to evaluate the netpoll polling mechanism (as in + netpoll_poll_dev()). It presents a complex scenario where the network + attempts to send a packet but fails, prompting it to poll the NIC from within + the netpoll TX side. + + This has been a crucial path in netpoll that was previously untested. Jakub + suggested using a single RX/TX queue, pushing traffic to the NIC, and then + sending netpoll messages (via netconsole) to trigger the poll. + + In parallel, bpftrace is used to detect if netpoll_poll_dev() was called. If + so, the test passes, otherwise it will be skipped. This test is very dependent on + the driver and environment, given we are trying to trigger a tricky scenario. +""" + +import errno +import logging +import os +import random +import string +import threading +import time +from typing import Optional + +from lib.py import ( + bpftrace, + CmdExitFailure, + defer, + ethtool, + GenerateTraffic, + ksft_exit, + ksft_pr, + ksft_run, + KsftFailEx, + KsftSkipEx, + NetDrvEpEnv, + KsftXfailEx, +) + +# Configure logging +logging.basicConfig( + level=logging.INFO, + format="%(asctime)s - %(levelname)s - %(message)s", +) + +NETCONSOLE_CONFIGFS_PATH: str = "/sys/kernel/config/netconsole" +NETCONS_REMOTE_PORT: int = 6666 +NETCONS_LOCAL_PORT: int = 1514 + +# Max number of netcons messages to send. Each iteration will setup +# netconsole and send MAX_WRITES messages +ITERATIONS: int = 20 +# Number of writes to /dev/kmsg per iteration +MAX_WRITES: int = 40 +# MAPS contains the information coming from bpftrace it will have only one +# key: "hits", which tells the number of times netpoll_poll_dev() was called +MAPS: dict[str, int] = {} +# Thread to run bpftrace in parallel +BPF_THREAD: Optional[threading.Thread] = None +# Time bpftrace will be running in parallel. +BPFTRACE_TIMEOUT: int = 10 + + +def ethtool_get_ringsize(interface_name: str) -> tuple[int, int]: + """ + Read the ringsize using ethtool. This will be used to restore it after the test + """ + try: + ethtool_result = ethtool(f"-g {interface_name}", json=True)[0] + rxs = ethtool_result["rx"] + txs = ethtool_result["tx"] + except (KeyError, IndexError) as exception: + raise KsftSkipEx( + f"Failed to read RX/TX ringsize: {exception}. Not going to mess with them." + ) from exception + + return rxs, txs + + +def ethtool_set_ringsize(interface_name: str, ring_size: tuple[int, int]) -> bool: + """Try to the number of RX and TX ringsize.""" + rxs = ring_size[0] + txs = ring_size[1] + + logging.debug("Setting ring size to %d/%d", rxs, txs) + try: + ethtool(f"-G {interface_name} rx {rxs} tx {txs}") + except CmdExitFailure: + # This might fail on real device, retry with a higher value, + # worst case, keep it as it is. + return False + + return True + + +def ethtool_get_queues_cnt(interface_name: str) -> tuple[int, int, int]: + """Read the number of RX, TX and combined queues using ethtool""" + + try: + ethtool_result = ethtool(f"-l {interface_name}", json=True)[0] + rxq = ethtool_result.get("rx", -1) + txq = ethtool_result.get("tx", -1) + combined = ethtool_result.get("combined", -1) + + except IndexError as exception: + raise KsftSkipEx( + f"Failed to read queues numbers: {exception}. Not going to mess with them." + ) from exception + + return rxq, txq, combined + + +def ethtool_set_queues_cnt(interface_name: str, queues: tuple[int, int, int]) -> None: + """Set the number of RX, TX and combined queues using ethtool""" + rxq, txq, combined = queues + + cmdline = f"-L {interface_name}" + + if rxq != -1: + cmdline += f" rx {rxq}" + if txq != -1: + cmdline += f" tx {txq}" + if combined != -1: + cmdline += f" combined {combined}" + + logging.debug("calling: ethtool %s", cmdline) + + try: + ethtool(cmdline) + except CmdExitFailure as exception: + raise KsftSkipEx( + f"Failed to configure RX/TX queues: {exception}. Ethtool not available?" + ) from exception + + +def netcons_generate_random_target_name() -> str: + """Generate a random target name starting with 'netcons'""" + random_suffix = "".join(random.choices(string.ascii_lowercase + string.digits, k=8)) + return f"netcons_{random_suffix}" + + +def netcons_create_target( + config_data: dict[str, str], + target_name: str, +) -> None: + """Create a netconsole dynamic target against the interfaces""" + logging.debug("Using netconsole name: %s", target_name) + try: + os.makedirs(f"{NETCONSOLE_CONFIGFS_PATH}/{target_name}", exist_ok=True) + logging.debug( + "Created target directory: %s/%s", NETCONSOLE_CONFIGFS_PATH, target_name + ) + except OSError as exception: + if exception.errno != errno.EEXIST: + raise KsftFailEx( + f"Failed to create netconsole target directory: {exception}" + ) from exception + + try: + for key, value in config_data.items(): + path = f"{NETCONSOLE_CONFIGFS_PATH}/{target_name}/{key}" + logging.debug("Writing %s to %s", key, path) + with open(path, "w", encoding="utf-8") as file: + # Always convert to string to write to file + file.write(str(value)) + + # Read all configuration values for debugging purposes + for debug_key in config_data.keys(): + with open( + f"{NETCONSOLE_CONFIGFS_PATH}/{target_name}/{debug_key}", + "r", + encoding="utf-8", + ) as file: + content = file.read() + logging.debug( + "%s/%s/%s : %s", + NETCONSOLE_CONFIGFS_PATH, + target_name, + debug_key, + content.strip(), + ) + + except Exception as exception: + raise KsftFailEx( + f"Failed to configure netconsole target: {exception}" + ) from exception + + +def netcons_configure_target( + cfg: NetDrvEpEnv, interface_name: str, target_name: str +) -> None: + """Configure netconsole on the interface with the given target name""" + config_data = { + "extended": "1", + "dev_name": interface_name, + "local_port": NETCONS_LOCAL_PORT, + "remote_port": NETCONS_REMOTE_PORT, + "local_ip": cfg.addr, + "remote_ip": cfg.remote_addr, + "remote_mac": "00:00:00:00:00:00", # Not important for this test + "enabled": "1", + } + + netcons_create_target(config_data, target_name) + logging.debug( + "Created netconsole target: %s on interface %s", target_name, interface_name + ) + + +def netcons_delete_target(name: str) -> None: + """Delete a netconsole dynamic target""" + target_path = f"{NETCONSOLE_CONFIGFS_PATH}/{name}" + try: + if os.path.exists(target_path): + os.rmdir(target_path) + except OSError as exception: + raise KsftFailEx( + f"Failed to delete netconsole target: {exception}" + ) from exception + + +def netcons_load_module() -> None: + """Try to load the netconsole module""" + os.system("modprobe netconsole") + + +def bpftrace_call() -> None: + """Call bpftrace to find how many times netpoll_poll_dev() is called. + Output is saved in the global variable `maps`""" + + # This is going to update the global variable, that will be seen by the + # main function + global MAPS # pylint: disable=W0603 + + # This will be passed to bpftrace as in bpftrace -e "expr" + expr = "kprobe:netpoll_poll_dev { @hits = count(); }" + + MAPS = bpftrace(expr, timeout=BPFTRACE_TIMEOUT, json=True) + logging.debug("BPFtrace output: %s", MAPS) + + +def bpftrace_start(): + """Start a thread to call `call_bpf` in a parallel thread""" + global BPF_THREAD # pylint: disable=W0603 + + BPF_THREAD = threading.Thread(target=bpftrace_call) + BPF_THREAD.start() + if not BPF_THREAD.is_alive(): + raise KsftSkipEx("BPFtrace thread is not alive. Skipping test") + + +def bpftrace_stop() -> None: + """Stop the bpftrace thread""" + if BPF_THREAD: + BPF_THREAD.join() + + +def bpftrace_any_hit(join: bool) -> bool: + """Check if netpoll_poll_dev() was called by checking the global variable `maps`""" + if not BPF_THREAD: + raise KsftFailEx("BPFtrace didn't start") + + if BPF_THREAD.is_alive(): + if join: + # Wait for bpftrace to finish + BPF_THREAD.join() + else: + # bpftrace is still running, so, we will not check the result yet + return False + + logging.debug("MAPS coming from bpftrace = %s", MAPS) + if "hits" not in MAPS.keys(): + raise KsftFailEx(f"bpftrace failed to run!?: {MAPS}") + + logging.debug("Got a total of %d hits", MAPS["hits"]) + return MAPS["hits"] > 0 + + +def do_netpoll_flush_monitored(cfg: NetDrvEpEnv, ifname: str, target_name: str) -> None: + """Print messages to the console, trying to trigger a netpoll poll""" + # Start bpftrace in parallel, so, it is watching + # netpoll_poll_dev() while we are sending netconsole messages + bpftrace_start() + defer(bpftrace_stop) + + do_netpoll_flush(cfg, ifname, target_name) + + if bpftrace_any_hit(join=True): + ksft_pr("netpoll_poll_dev() was called. Success") + return + + raise KsftXfailEx("netpoll_poll_dev() was not called during the test...") + + +def do_netpoll_flush(cfg: NetDrvEpEnv, ifname: str, target_name: str) -> None: + """Print messages to the console, trying to trigger a netpoll poll""" + netcons_configure_target(cfg, ifname, target_name) + retry = 0 + + for i in range(int(ITERATIONS)): + if not BPF_THREAD.is_alive() or bpftrace_any_hit(join=False): + # bpftrace is done, stop sending messages + break + + msg = f"netcons test #{i}" + with open("/dev/kmsg", "w", encoding="utf-8") as kmsg: + for j in range(MAX_WRITES): + try: + kmsg.write(f"{msg}-{j}\n") + except OSError as exception: + # in some cases, kmsg can be busy, so, we will retry + time.sleep(1) + retry += 1 + if retry < 5: + logging.info("Failed to write to kmsg. Retrying") + # Just retry a few times + continue + raise KsftFailEx( + f"Failed to write to kmsg: {exception}" + ) from exception + + netcons_delete_target(target_name) + netcons_configure_target(cfg, ifname, target_name) + # If we sleep here, we will have a better chance of triggering + # This number is based on a few tests I ran while developing this test + time.sleep(0.4) + + +def configure_network(ifname: str) -> None: + """Configure ring size and queue numbers""" + + # Set defined queues to 1 to force congestion + prev_queues = ethtool_get_queues_cnt(ifname) + logging.debug("RX/TX/combined queues: %s", prev_queues) + # Only set the queues to 1 if they exists in the device. I.e, they are > 0 + ethtool_set_queues_cnt(ifname, tuple(1 if x > 0 else x for x in prev_queues)) + defer(ethtool_set_queues_cnt, ifname, prev_queues) + + # Try to set the ring size to some low value. + # Do not fail if the hardware do not accepted desired values + prev_ring_size = ethtool_get_ringsize(ifname) + for size in [(1, 1), (128, 128), (256, 256)]: + if ethtool_set_ringsize(ifname, size): + # hardware accepted the desired ringsize + logging.debug("Set RX/TX ringsize to: %s from %s", size, prev_ring_size) + break + defer(ethtool_set_ringsize, ifname, prev_ring_size) + + +def test_netpoll(cfg: NetDrvEpEnv) -> None: + """ + Test netpoll by sending traffic to the interface and then sending + netconsole messages to trigger a poll + """ + + ifname = cfg.ifname + configure_network(ifname) + target_name = netcons_generate_random_target_name() + traffic = None + + try: + traffic = GenerateTraffic(cfg) + do_netpoll_flush_monitored(cfg, ifname, target_name) + finally: + if traffic: + traffic.stop() + + # Revert RX/TX queues + netcons_delete_target(target_name) + + +def test_check_dependencies() -> None: + """Check if the dependencies are met""" + if not os.path.exists(NETCONSOLE_CONFIGFS_PATH): + raise KsftSkipEx( + f"Directory {NETCONSOLE_CONFIGFS_PATH} does not exist. CONFIG_NETCONSOLE_DYNAMIC might not be set." # pylint: disable=C0301 + ) + + +def main() -> None: + """Main function to run the test""" + netcons_load_module() + test_check_dependencies() + with NetDrvEpEnv(__file__) as cfg: + ksft_run( + [test_netpoll], + args=(cfg,), + ) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/ocelot/psfp.sh b/tools/testing/selftests/drivers/net/ocelot/psfp.sh index bed748dde4b0..8972f42dfe03 100755 --- a/tools/testing/selftests/drivers/net/ocelot/psfp.sh +++ b/tools/testing/selftests/drivers/net/ocelot/psfp.sh @@ -266,18 +266,14 @@ run_test() "${base_time}" \ "${CYCLE_TIME_NS}" \ "${SHIFT_TIME_NS}" \ + "${GATE_DURATION_NS}" \ "${NUM_PKTS}" \ "${STREAM_VID}" \ "${STREAM_PRIO}" \ "" \ "${isochron_dat}" - # Count all received packets by looking at the non-zero RX timestamps - received=$(isochron report \ - --input-file "${isochron_dat}" \ - --printf-format "%u\n" --printf-args "R" | \ - grep -w -v '0' | wc -l) - + received=$(isochron_report_num_received "${isochron_dat}") if [ "${received}" = "${expected}" ]; then RET=0 else diff --git a/tools/testing/selftests/drivers/net/ping.py b/tools/testing/selftests/drivers/net/ping.py index eb83e7b48797..da3623c5e8a9 100755 --- a/tools/testing/selftests/drivers/net/ping.py +++ b/tools/testing/selftests/drivers/net/ping.py @@ -1,49 +1,239 @@ #!/usr/bin/env python3 # SPDX-License-Identifier: GPL-2.0 +import os +import random, string, time from lib.py import ksft_run, ksft_exit -from lib.py import ksft_eq -from lib.py import NetDrvEpEnv +from lib.py import ksft_eq, KsftSkipEx, KsftFailEx +from lib.py import EthtoolFamily, NetDrvEpEnv from lib.py import bkg, cmd, wait_port_listen, rand_port +from lib.py import defer, ethtool, ip +no_sleep=False -def test_v4(cfg) -> None: - cfg.require_v4() +def _test_v4(cfg) -> None: + if not cfg.addr_v["4"]: + return - cmd(f"ping -c 1 -W0.5 {cfg.remote_v4}") - cmd(f"ping -c 1 -W0.5 {cfg.v4}", host=cfg.remote) + cmd("ping -c 1 -W0.5 " + cfg.remote_addr_v["4"]) + cmd("ping -c 1 -W0.5 " + cfg.addr_v["4"], host=cfg.remote) + cmd("ping -s 65000 -c 1 -W0.5 " + cfg.remote_addr_v["4"]) + cmd("ping -s 65000 -c 1 -W0.5 " + cfg.addr_v["4"], host=cfg.remote) +def _test_v6(cfg) -> None: + if not cfg.addr_v["6"]: + return -def test_v6(cfg) -> None: - cfg.require_v6() + cmd("ping -c 1 -W5 " + cfg.remote_addr_v["6"]) + cmd("ping -c 1 -W5 " + cfg.addr_v["6"], host=cfg.remote) + cmd("ping -s 65000 -c 1 -W0.5 " + cfg.remote_addr_v["6"]) + cmd("ping -s 65000 -c 1 -W0.5 " + cfg.addr_v["6"], host=cfg.remote) - cmd(f"ping -c 1 -W0.5 {cfg.remote_v6}") - cmd(f"ping -c 1 -W0.5 {cfg.v6}", host=cfg.remote) - - -def test_tcp(cfg) -> None: - cfg.require_cmd("socat", remote=True) +def _test_tcp(cfg) -> None: + cfg.require_cmd("socat", local=False, remote=True) port = rand_port() listen_cmd = f"socat -{cfg.addr_ipver} -t 2 -u TCP-LISTEN:{port},reuseport STDOUT" + test_string = ''.join(random.choice(string.ascii_lowercase) for _ in range(65536)) with bkg(listen_cmd, exit_wait=True) as nc: wait_port_listen(port) - cmd(f"echo ping | socat -t 2 -u STDIN TCP:{cfg.baddr}:{port}", + cmd(f"echo {test_string} | socat -t 2 -u STDIN TCP:{cfg.baddr}:{port}", shell=True, host=cfg.remote) - ksft_eq(nc.stdout.strip(), "ping") + ksft_eq(nc.stdout.strip(), test_string) + test_string = ''.join(random.choice(string.ascii_lowercase) for _ in range(65536)) with bkg(listen_cmd, host=cfg.remote, exit_wait=True) as nc: wait_port_listen(port, host=cfg.remote) - cmd(f"echo ping | socat -t 2 -u STDIN TCP:{cfg.remote_baddr}:{port}", shell=True) - ksft_eq(nc.stdout.strip(), "ping") - + cmd(f"echo {test_string} | socat -t 2 -u STDIN TCP:{cfg.remote_baddr}:{port}", shell=True) + ksft_eq(nc.stdout.strip(), test_string) + +def _schedule_checksum_reset(cfg, netnl) -> None: + features = ethtool(f"-k {cfg.ifname}", json=True) + setting = "" + for side in ["tx", "rx"]: + f = features[0][side + "-checksumming"] + if not f["fixed"]: + setting += " " + side + setting += " " + ("on" if f["requested"] or f["active"] else "off") + defer(ethtool, f" -K {cfg.ifname} " + setting) + +def _set_offload_checksum(cfg, netnl, on) -> None: + try: + ethtool(f" -K {cfg.ifname} rx {on} tx {on} ") + except: + return + +def _set_xdp_generic_sb_on(cfg) -> None: + prog = cfg.net_lib_dir / "xdp_dummy.bpf.o" + cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote) + cmd(f"ip link set dev {cfg.ifname} mtu 1500 xdpgeneric obj {prog} sec xdp", shell=True) + defer(cmd, f"ip link set dev {cfg.ifname} xdpgeneric off") + + if no_sleep != True: + time.sleep(10) + +def _set_xdp_generic_mb_on(cfg) -> None: + prog = cfg.net_lib_dir / "xdp_dummy.bpf.o" + cmd(f"ip link set dev {cfg.remote_ifname} mtu 9000", shell=True, host=cfg.remote) + defer(ip, f"link set dev {cfg.remote_ifname} mtu 1500", host=cfg.remote) + ip("link set dev %s mtu 9000 xdpgeneric obj %s sec xdp.frags" % (cfg.ifname, prog)) + defer(ip, f"link set dev {cfg.ifname} mtu 1500 xdpgeneric off") + + if no_sleep != True: + time.sleep(10) + +def _set_xdp_native_sb_on(cfg) -> None: + prog = cfg.net_lib_dir / "xdp_dummy.bpf.o" + cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote) + cmd(f"ip -j link set dev {cfg.ifname} mtu 1500 xdp obj {prog} sec xdp", shell=True) + defer(ip, f"link set dev {cfg.ifname} mtu 1500 xdp off") + xdp_info = ip("-d link show %s" % (cfg.ifname), json=True)[0] + if xdp_info['xdp']['mode'] != 1: + """ + If the interface doesn't support native-mode, it falls back to generic mode. + The mode value 1 is native and 2 is generic. + So it raises an exception if mode is not 1(native mode). + """ + raise KsftSkipEx('device does not support native-XDP') + + if no_sleep != True: + time.sleep(10) + +def _set_xdp_native_mb_on(cfg) -> None: + prog = cfg.net_lib_dir / "xdp_dummy.bpf.o" + cmd(f"ip link set dev {cfg.remote_ifname} mtu 9000", shell=True, host=cfg.remote) + defer(ip, f"link set dev {cfg.remote_ifname} mtu 1500", host=cfg.remote) + try: + cmd(f"ip link set dev {cfg.ifname} mtu 9000 xdp obj {prog} sec xdp.frags", shell=True) + defer(ip, f"link set dev {cfg.ifname} mtu 1500 xdp off") + except Exception as e: + raise KsftSkipEx('device does not support native-multi-buffer XDP') + + if no_sleep != True: + time.sleep(10) + +def _set_xdp_offload_on(cfg) -> None: + prog = cfg.net_lib_dir / "xdp_dummy.bpf.o" + cmd(f"ip link set dev {cfg.ifname} mtu 1500", shell=True) + try: + cmd(f"ip link set dev {cfg.ifname} xdpoffload obj {prog} sec xdp", shell=True) + except Exception as e: + raise KsftSkipEx('device does not support offloaded XDP') + defer(ip, f"link set dev {cfg.ifname} xdpoffload off") + cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote) + + if no_sleep != True: + time.sleep(10) + +def get_interface_info(cfg) -> None: + global no_sleep + + if cfg.remote_ifname == "": + raise KsftFailEx('Can not get remote interface') + local_info = ip("-d link show %s" % (cfg.ifname), json=True)[0] + if 'parentbus' in local_info and local_info['parentbus'] == "netdevsim": + no_sleep=True + if 'linkinfo' in local_info and local_info['linkinfo']['info_kind'] == "veth": + no_sleep=True + +def set_interface_init(cfg) -> None: + cmd(f"ip link set dev {cfg.ifname} mtu 1500", shell=True) + cmd(f"ip link set dev {cfg.ifname} xdp off ", shell=True) + cmd(f"ip link set dev {cfg.ifname} xdpgeneric off ", shell=True) + cmd(f"ip link set dev {cfg.ifname} xdpoffload off", shell=True) + cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote) + +def test_default_v4(cfg, netnl) -> None: + cfg.require_ipver("4") + + _schedule_checksum_reset(cfg, netnl) + _set_offload_checksum(cfg, netnl, "off") + _test_v4(cfg) + _test_tcp(cfg) + _set_offload_checksum(cfg, netnl, "on") + _test_v4(cfg) + _test_tcp(cfg) + +def test_default_v6(cfg, netnl) -> None: + cfg.require_ipver("6") + + _schedule_checksum_reset(cfg, netnl) + _set_offload_checksum(cfg, netnl, "off") + _test_v6(cfg) + _test_tcp(cfg) + _set_offload_checksum(cfg, netnl, "on") + _test_v6(cfg) + _test_tcp(cfg) + +def test_xdp_generic_sb(cfg, netnl) -> None: + _schedule_checksum_reset(cfg, netnl) + _set_xdp_generic_sb_on(cfg) + _set_offload_checksum(cfg, netnl, "off") + _test_v4(cfg) + _test_v6(cfg) + _test_tcp(cfg) + _set_offload_checksum(cfg, netnl, "on") + _test_v4(cfg) + _test_v6(cfg) + _test_tcp(cfg) + +def test_xdp_generic_mb(cfg, netnl) -> None: + _schedule_checksum_reset(cfg, netnl) + _set_xdp_generic_mb_on(cfg) + _set_offload_checksum(cfg, netnl, "off") + _test_v4(cfg) + _test_v6(cfg) + _test_tcp(cfg) + _set_offload_checksum(cfg, netnl, "on") + _test_v4(cfg) + _test_v6(cfg) + _test_tcp(cfg) + +def test_xdp_native_sb(cfg, netnl) -> None: + _schedule_checksum_reset(cfg, netnl) + _set_xdp_native_sb_on(cfg) + _set_offload_checksum(cfg, netnl, "off") + _test_v4(cfg) + _test_v6(cfg) + _test_tcp(cfg) + _set_offload_checksum(cfg, netnl, "on") + _test_v4(cfg) + _test_v6(cfg) + _test_tcp(cfg) + +def test_xdp_native_mb(cfg, netnl) -> None: + _schedule_checksum_reset(cfg, netnl) + _set_xdp_native_mb_on(cfg) + _set_offload_checksum(cfg, netnl, "off") + _test_v4(cfg) + _test_v6(cfg) + _test_tcp(cfg) + _set_offload_checksum(cfg, netnl, "on") + _test_v4(cfg) + _test_v6(cfg) + _test_tcp(cfg) + +def test_xdp_offload(cfg, netnl) -> None: + _set_xdp_offload_on(cfg) + _test_v4(cfg) + _test_v6(cfg) + _test_tcp(cfg) def main() -> None: with NetDrvEpEnv(__file__) as cfg: - ksft_run(globs=globals(), case_pfx={"test_"}, args=(cfg, )) + get_interface_info(cfg) + set_interface_init(cfg) + ksft_run([test_default_v4, + test_default_v6, + test_xdp_generic_sb, + test_xdp_generic_mb, + test_xdp_native_sb, + test_xdp_native_mb, + test_xdp_offload], + args=(cfg, EthtoolFamily())) ksft_exit() diff --git a/tools/testing/selftests/drivers/net/psp.py b/tools/testing/selftests/drivers/net/psp.py new file mode 100755 index 000000000000..06559ef49b9a --- /dev/null +++ b/tools/testing/selftests/drivers/net/psp.py @@ -0,0 +1,640 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +"""Test suite for PSP capable drivers.""" + +import errno +import fcntl +import socket +import struct +import termios +import time + +from lib.py import defer +from lib.py import ksft_run, ksft_exit, ksft_pr +from lib.py import ksft_true, ksft_eq, ksft_ne, ksft_gt, ksft_raises +from lib.py import ksft_not_none +from lib.py import KsftSkipEx +from lib.py import NetDrvEpEnv, PSPFamily, NlError +from lib.py import bkg, rand_port, wait_port_listen + + +def _get_outq(s): + one = b'\0' * 4 + outq = fcntl.ioctl(s.fileno(), termios.TIOCOUTQ, one) + return struct.unpack("I", outq)[0] + + +def _send_with_ack(cfg, msg): + cfg.comm_sock.send(msg) + response = cfg.comm_sock.recv(4) + if response != b'ack\0': + raise RuntimeError("Unexpected server response", response) + + +def _remote_read_len(cfg): + cfg.comm_sock.send(b'read len\0') + return int(cfg.comm_sock.recv(1024)[:-1].decode('utf-8')) + + +def _make_clr_conn(cfg, ipver=None): + _send_with_ack(cfg, b'conn clr\0') + remote_addr = cfg.remote_addr_v[ipver] if ipver else cfg.remote_addr + s = socket.create_connection((remote_addr, cfg.comm_port), ) + return s + + +def _make_psp_conn(cfg, version=0, ipver=None): + _send_with_ack(cfg, b'conn psp\0' + struct.pack('BB', version, version)) + remote_addr = cfg.remote_addr_v[ipver] if ipver else cfg.remote_addr + s = socket.create_connection((remote_addr, cfg.comm_port), ) + return s + + +def _close_conn(cfg, s): + _send_with_ack(cfg, b'data close\0') + s.close() + + +def _close_psp_conn(cfg, s): + _close_conn(cfg, s) + + +def _spi_xchg(s, rx): + s.send(struct.pack('I', rx['spi']) + rx['key']) + tx = s.recv(4 + len(rx['key'])) + return { + 'spi': struct.unpack('I', tx[:4])[0], + 'key': tx[4:] + } + + +def _send_careful(cfg, s, rounds): + data = b'0123456789' * 200 + for i in range(rounds): + n = 0 + for _ in range(10): # allow 10 retries + try: + n += s.send(data[n:], socket.MSG_DONTWAIT) + if n == len(data): + break + except BlockingIOError: + time.sleep(0.05) + else: + rlen = _remote_read_len(cfg) + outq = _get_outq(s) + report = f'sent: {i * len(data) + n} remote len: {rlen} outq: {outq}' + raise RuntimeError(report) + + return len(data) * rounds + + +def _check_data_rx(cfg, exp_len): + read_len = -1 + for _ in range(30): + cfg.comm_sock.send(b'read len\0') + read_len = int(cfg.comm_sock.recv(1024)[:-1].decode('utf-8')) + if read_len == exp_len: + break + time.sleep(0.01) + ksft_eq(read_len, exp_len) + + +def _check_data_outq(s, exp_len, force_wait=False): + outq = 0 + for _ in range(10): + outq = _get_outq(s) + if not force_wait and outq == exp_len: + break + time.sleep(0.01) + ksft_eq(outq, exp_len) + + +def _get_stat(cfg, key): + return cfg.pspnl.get_stats({'dev-id': cfg.psp_dev_id})[key] + +# +# Test case boiler plate +# + +def _init_psp_dev(cfg): + if not hasattr(cfg, 'psp_dev_id'): + # Figure out which local device we are testing against + for dev in cfg.pspnl.dev_get({}, dump=True): + if dev['ifindex'] == cfg.ifindex: + cfg.psp_info = dev + cfg.psp_dev_id = cfg.psp_info['id'] + break + else: + raise KsftSkipEx("No PSP devices found") + + # Enable PSP if necessary + cap = cfg.psp_info['psp-versions-cap'] + ena = cfg.psp_info['psp-versions-ena'] + if cap != ena: + cfg.pspnl.dev_set({'id': cfg.psp_dev_id, 'psp-versions-ena': cap}) + defer(cfg.pspnl.dev_set, {'id': cfg.psp_dev_id, + 'psp-versions-ena': ena }) + +# +# Test cases +# + +def dev_list_devices(cfg): + """ Dump all devices """ + _init_psp_dev(cfg) + + devices = cfg.pspnl.dev_get({}, dump=True) + + found = False + for dev in devices: + found |= dev['id'] == cfg.psp_dev_id + ksft_true(found) + + +def dev_get_device(cfg): + """ Get the device we intend to use """ + _init_psp_dev(cfg) + + dev = cfg.pspnl.dev_get({'id': cfg.psp_dev_id}) + ksft_eq(dev['id'], cfg.psp_dev_id) + + +def dev_get_device_bad(cfg): + """ Test getting device which doesn't exist """ + raised = False + try: + cfg.pspnl.dev_get({'id': 1234567}) + except NlError as e: + ksft_eq(e.nl_msg.error, -errno.ENODEV) + raised = True + ksft_true(raised) + + +def dev_rotate(cfg): + """ Test key rotation """ + _init_psp_dev(cfg) + + prev_rotations = _get_stat(cfg, 'key-rotations') + + rot = cfg.pspnl.key_rotate({"id": cfg.psp_dev_id}) + ksft_eq(rot['id'], cfg.psp_dev_id) + rot = cfg.pspnl.key_rotate({"id": cfg.psp_dev_id}) + ksft_eq(rot['id'], cfg.psp_dev_id) + + cur_rotations = _get_stat(cfg, 'key-rotations') + ksft_eq(cur_rotations, prev_rotations + 2) + + +def dev_rotate_spi(cfg): + """ Test key rotation and SPI check """ + _init_psp_dev(cfg) + + top_a = top_b = 0 + with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s: + assoc_a = cfg.pspnl.rx_assoc({"version": 0, + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + top_a = assoc_a['rx-key']['spi'] >> 31 + s.close() + rot = cfg.pspnl.key_rotate({"id": cfg.psp_dev_id}) + with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s: + ksft_eq(rot['id'], cfg.psp_dev_id) + assoc_b = cfg.pspnl.rx_assoc({"version": 0, + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + top_b = assoc_b['rx-key']['spi'] >> 31 + s.close() + ksft_ne(top_a, top_b) + + +def assoc_basic(cfg): + """ Test creating associations """ + _init_psp_dev(cfg) + + with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s: + assoc = cfg.pspnl.rx_assoc({"version": 0, + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + ksft_eq(assoc['dev-id'], cfg.psp_dev_id) + ksft_gt(assoc['rx-key']['spi'], 0) + ksft_eq(len(assoc['rx-key']['key']), 16) + + assoc = cfg.pspnl.tx_assoc({"dev-id": cfg.psp_dev_id, + "version": 0, + "tx-key": assoc['rx-key'], + "sock-fd": s.fileno()}) + ksft_eq(len(assoc), 0) + s.close() + + +def assoc_bad_dev(cfg): + """ Test creating associations with bad device ID """ + _init_psp_dev(cfg) + + with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s: + with ksft_raises(NlError) as cm: + cfg.pspnl.rx_assoc({"version": 0, + "dev-id": cfg.psp_dev_id + 1234567, + "sock-fd": s.fileno()}) + ksft_eq(cm.exception.nl_msg.error, -errno.ENODEV) + + +def assoc_sk_only_conn(cfg): + """ Test creating associations based on socket """ + _init_psp_dev(cfg) + + with _make_clr_conn(cfg) as s: + assoc = cfg.pspnl.rx_assoc({"version": 0, + "sock-fd": s.fileno()}) + ksft_eq(assoc['dev-id'], cfg.psp_dev_id) + cfg.pspnl.tx_assoc({"version": 0, + "tx-key": assoc['rx-key'], + "sock-fd": s.fileno()}) + _close_conn(cfg, s) + + +def assoc_sk_only_mismatch(cfg): + """ Test creating associations based on socket (dev mismatch) """ + _init_psp_dev(cfg) + + with _make_clr_conn(cfg) as s: + with ksft_raises(NlError) as cm: + cfg.pspnl.rx_assoc({"version": 0, + "dev-id": cfg.psp_dev_id + 1234567, + "sock-fd": s.fileno()}) + the_exception = cm.exception + ksft_eq(the_exception.nl_msg.extack['bad-attr'], ".dev-id") + ksft_eq(the_exception.nl_msg.error, -errno.EINVAL) + + +def assoc_sk_only_mismatch_tx(cfg): + """ Test creating associations based on socket (dev mismatch) """ + _init_psp_dev(cfg) + + with _make_clr_conn(cfg) as s: + with ksft_raises(NlError) as cm: + assoc = cfg.pspnl.rx_assoc({"version": 0, + "sock-fd": s.fileno()}) + cfg.pspnl.tx_assoc({"version": 0, + "tx-key": assoc['rx-key'], + "dev-id": cfg.psp_dev_id + 1234567, + "sock-fd": s.fileno()}) + the_exception = cm.exception + ksft_eq(the_exception.nl_msg.extack['bad-attr'], ".dev-id") + ksft_eq(the_exception.nl_msg.error, -errno.EINVAL) + + +def assoc_sk_only_unconn(cfg): + """ Test creating associations based on socket (unconnected, should fail) """ + _init_psp_dev(cfg) + + with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s: + with ksft_raises(NlError) as cm: + cfg.pspnl.rx_assoc({"version": 0, + "sock-fd": s.fileno()}) + the_exception = cm.exception + ksft_eq(the_exception.nl_msg.extack['miss-type'], "dev-id") + ksft_eq(the_exception.nl_msg.error, -errno.EINVAL) + + +def assoc_version_mismatch(cfg): + """ Test creating associations where Rx and Tx PSP versions do not match """ + _init_psp_dev(cfg) + + versions = list(cfg.psp_info['psp-versions-cap']) + if len(versions) < 2: + raise KsftSkipEx("Not enough PSP versions supported by the device for the test") + + # Translate versions to integers + versions = [cfg.pspnl.consts["version"].entries[v].value for v in versions] + + with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s: + rx = cfg.pspnl.rx_assoc({"version": versions[0], + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + + for version in versions[1:]: + with ksft_raises(NlError) as cm: + cfg.pspnl.tx_assoc({"dev-id": cfg.psp_dev_id, + "version": version, + "tx-key": rx['rx-key'], + "sock-fd": s.fileno()}) + the_exception = cm.exception + ksft_eq(the_exception.nl_msg.error, -errno.EINVAL) + + +def assoc_twice(cfg): + """ Test reusing Tx assoc for two sockets """ + _init_psp_dev(cfg) + + def rx_assoc_check(s): + assoc = cfg.pspnl.rx_assoc({"version": 0, + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + ksft_eq(assoc['dev-id'], cfg.psp_dev_id) + ksft_gt(assoc['rx-key']['spi'], 0) + ksft_eq(len(assoc['rx-key']['key']), 16) + + return assoc + + with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s: + assoc = rx_assoc_check(s) + tx = cfg.pspnl.tx_assoc({"dev-id": cfg.psp_dev_id, + "version": 0, + "tx-key": assoc['rx-key'], + "sock-fd": s.fileno()}) + ksft_eq(len(tx), 0) + + # Use the same Tx assoc second time + with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s2: + rx_assoc_check(s2) + tx = cfg.pspnl.tx_assoc({"dev-id": cfg.psp_dev_id, + "version": 0, + "tx-key": assoc['rx-key'], + "sock-fd": s2.fileno()}) + ksft_eq(len(tx), 0) + + s.close() + + +def _data_basic_send(cfg, version, ipver): + """ Test basic data send """ + _init_psp_dev(cfg) + + # Version 0 is required by spec, don't let it skip + if version: + name = cfg.pspnl.consts["version"].entries_by_val[version].name + if name not in cfg.psp_info['psp-versions-cap']: + with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s: + with ksft_raises(NlError) as cm: + cfg.pspnl.rx_assoc({"version": version, + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + ksft_eq(cm.exception.nl_msg.error, -errno.EOPNOTSUPP) + raise KsftSkipEx("PSP version not supported", name) + + s = _make_psp_conn(cfg, version, ipver) + + rx_assoc = cfg.pspnl.rx_assoc({"version": version, + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + rx = rx_assoc['rx-key'] + tx = _spi_xchg(s, rx) + + cfg.pspnl.tx_assoc({"dev-id": cfg.psp_dev_id, + "version": version, + "tx-key": tx, + "sock-fd": s.fileno()}) + + data_len = _send_careful(cfg, s, 100) + _check_data_rx(cfg, data_len) + _close_psp_conn(cfg, s) + + +def __bad_xfer_do(cfg, s, tx, version='hdr0-aes-gcm-128'): + # Make sure we accept the ACK for the SPI before we seal with the bad assoc + _check_data_outq(s, 0) + + cfg.pspnl.tx_assoc({"dev-id": cfg.psp_dev_id, + "version": version, + "tx-key": tx, + "sock-fd": s.fileno()}) + + data_len = _send_careful(cfg, s, 20) + _check_data_outq(s, data_len, force_wait=True) + _check_data_rx(cfg, 0) + _close_psp_conn(cfg, s) + + +def data_send_bad_key(cfg): + """ Test send data with bad key """ + _init_psp_dev(cfg) + + s = _make_psp_conn(cfg) + + rx_assoc = cfg.pspnl.rx_assoc({"version": 0, + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + rx = rx_assoc['rx-key'] + tx = _spi_xchg(s, rx) + tx['key'] = (tx['key'][0] ^ 0xff).to_bytes(1, 'little') + tx['key'][1:] + __bad_xfer_do(cfg, s, tx) + + +def data_send_disconnect(cfg): + """ Test socket close after sending data """ + _init_psp_dev(cfg) + + with _make_psp_conn(cfg) as s: + assoc = cfg.pspnl.rx_assoc({"version": 0, + "sock-fd": s.fileno()}) + tx = _spi_xchg(s, assoc['rx-key']) + cfg.pspnl.tx_assoc({"version": 0, + "tx-key": tx, + "sock-fd": s.fileno()}) + + data_len = _send_careful(cfg, s, 100) + _check_data_rx(cfg, data_len) + + s.shutdown(socket.SHUT_RDWR) + s.close() + + +def _data_mss_adjust(cfg, ipver): + _init_psp_dev(cfg) + + # First figure out what the MSS would be without any adjustments + s = _make_clr_conn(cfg, ipver) + s.send(b"0123456789abcdef" * 1024) + _check_data_rx(cfg, 16 * 1024) + mss = s.getsockopt(socket.IPPROTO_TCP, socket.TCP_MAXSEG) + _close_conn(cfg, s) + + s = _make_psp_conn(cfg, 0, ipver) + try: + rx_assoc = cfg.pspnl.rx_assoc({"version": 0, + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + rx = rx_assoc['rx-key'] + tx = _spi_xchg(s, rx) + + rxmss = s.getsockopt(socket.IPPROTO_TCP, socket.TCP_MAXSEG) + ksft_eq(mss, rxmss) + + cfg.pspnl.tx_assoc({"dev-id": cfg.psp_dev_id, + "version": 0, + "tx-key": tx, + "sock-fd": s.fileno()}) + + txmss = s.getsockopt(socket.IPPROTO_TCP, socket.TCP_MAXSEG) + ksft_eq(mss, txmss + 40) + + data_len = _send_careful(cfg, s, 100) + _check_data_rx(cfg, data_len) + _check_data_outq(s, 0) + + txmss = s.getsockopt(socket.IPPROTO_TCP, socket.TCP_MAXSEG) + ksft_eq(mss, txmss + 40) + finally: + _close_psp_conn(cfg, s) + + +def data_stale_key(cfg): + """ Test send on a double-rotated key """ + _init_psp_dev(cfg) + + prev_stale = _get_stat(cfg, 'stale-events') + s = _make_psp_conn(cfg) + try: + rx_assoc = cfg.pspnl.rx_assoc({"version": 0, + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + rx = rx_assoc['rx-key'] + tx = _spi_xchg(s, rx) + + cfg.pspnl.tx_assoc({"dev-id": cfg.psp_dev_id, + "version": 0, + "tx-key": tx, + "sock-fd": s.fileno()}) + + data_len = _send_careful(cfg, s, 100) + _check_data_rx(cfg, data_len) + _check_data_outq(s, 0) + + cfg.pspnl.key_rotate({"id": cfg.psp_dev_id}) + cfg.pspnl.key_rotate({"id": cfg.psp_dev_id}) + + cur_stale = _get_stat(cfg, 'stale-events') + ksft_gt(cur_stale, prev_stale) + + s.send(b'0123456789' * 200) + _check_data_outq(s, 2000, force_wait=True) + finally: + _close_psp_conn(cfg, s) + + +def __nsim_psp_rereg(cfg): + # The PSP dev ID will change, remember what was there before + before = set([x['id'] for x in cfg.pspnl.dev_get({}, dump=True)]) + + cfg._ns.nsims[0].dfs_write('psp_rereg', '1') + + after = set([x['id'] for x in cfg.pspnl.dev_get({}, dump=True)]) + + new_devs = list(after - before) + ksft_eq(len(new_devs), 1) + cfg.psp_dev_id = list(after - before)[0] + + +def removal_device_rx(cfg): + """ Test removing a netdev / PSD with active Rx assoc """ + + # We could technically devlink reload real devices, too + # but that kills the control socket. So test this on + # netdevsim only for now + cfg.require_nsim() + + s = _make_clr_conn(cfg) + try: + rx_assoc = cfg.pspnl.rx_assoc({"version": 0, + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + ksft_not_none(rx_assoc) + + __nsim_psp_rereg(cfg) + finally: + _close_conn(cfg, s) + + +def removal_device_bi(cfg): + """ Test removing a netdev / PSD with active Rx/Tx assoc """ + + # We could technically devlink reload real devices, too + # but that kills the control socket. So test this on + # netdevsim only for now + cfg.require_nsim() + + s = _make_clr_conn(cfg) + try: + rx_assoc = cfg.pspnl.rx_assoc({"version": 0, + "dev-id": cfg.psp_dev_id, + "sock-fd": s.fileno()}) + cfg.pspnl.tx_assoc({"dev-id": cfg.psp_dev_id, + "version": 0, + "tx-key": rx_assoc['rx-key'], + "sock-fd": s.fileno()}) + __nsim_psp_rereg(cfg) + finally: + _close_conn(cfg, s) + + +def psp_ip_ver_test_builder(name, test_func, psp_ver, ipver): + """Build test cases for each combo of PSP version and IP version""" + def test_case(cfg): + cfg.require_ipver(ipver) + test_case.__name__ = f"{name}_v{psp_ver}_ip{ipver}" + test_func(cfg, psp_ver, ipver) + return test_case + + +def ipver_test_builder(name, test_func, ipver): + """Build test cases for each IP version""" + def test_case(cfg): + cfg.require_ipver(ipver) + test_case.__name__ = f"{name}_ip{ipver}" + test_func(cfg, ipver) + return test_case + + +def main() -> None: + """ Ksft boiler plate main """ + + with NetDrvEpEnv(__file__) as cfg: + cfg.pspnl = PSPFamily() + + # Set up responder and communication sock + responder = cfg.remote.deploy("psp_responder") + + cfg.comm_port = rand_port() + srv = None + try: + with bkg(responder + f" -p {cfg.comm_port}", host=cfg.remote, + exit_wait=True) as srv: + wait_port_listen(cfg.comm_port, host=cfg.remote) + + cfg.comm_sock = socket.create_connection((cfg.remote_addr, + cfg.comm_port), + timeout=1) + + cases = [ + psp_ip_ver_test_builder( + "data_basic_send", _data_basic_send, version, ipver + ) + for version in range(0, 4) + for ipver in ("4", "6") + ] + cases += [ + ipver_test_builder("data_mss_adjust", _data_mss_adjust, ipver) + for ipver in ("4", "6") + ] + + ksft_run(cases=cases, globs=globals(), + case_pfx={"dev_", "data_", "assoc_", "removal_"}, + args=(cfg, )) + + cfg.comm_sock.send(b"exit\0") + cfg.comm_sock.close() + finally: + if srv and (srv.stdout or srv.stderr): + ksft_pr("") + ksft_pr(f"Responder logs ({srv.ret}):") + if srv and srv.stdout: + ksft_pr("STDOUT:\n# " + srv.stdout.strip().replace("\n", "\n# ")) + if srv and srv.stderr: + ksft_pr("STDERR:\n# " + srv.stderr.strip().replace("\n", "\n# ")) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/psp_responder.c b/tools/testing/selftests/drivers/net/psp_responder.c new file mode 100644 index 000000000000..f309e0d73cbf --- /dev/null +++ b/tools/testing/selftests/drivers/net/psp_responder.c @@ -0,0 +1,483 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <stdio.h> +#include <string.h> +#include <sys/poll.h> +#include <sys/socket.h> +#include <sys/time.h> +#include <netinet/in.h> +#include <unistd.h> + +#include <ynl.h> + +#include "psp-user.h" + +#define dbg(msg...) \ +do { \ + if (opts->verbose) \ + fprintf(stderr, "DEBUG: " msg); \ +} while (0) + +static bool should_quit; + +struct opts { + int port; + int devid; + bool verbose; +}; + +enum accept_cfg { + ACCEPT_CFG_NONE = 0, + ACCEPT_CFG_CLEAR, + ACCEPT_CFG_PSP, +}; + +static struct { + unsigned char tx; + unsigned char rx; +} psp_vers; + +static int conn_setup_psp(struct ynl_sock *ys, struct opts *opts, int data_sock) +{ + struct psp_rx_assoc_rsp *rsp; + struct psp_rx_assoc_req *req; + struct psp_tx_assoc_rsp *tsp; + struct psp_tx_assoc_req *teq; + char info[300]; + int key_len; + ssize_t sz; + __u32 spi; + + dbg("create PSP connection\n"); + + // Rx assoc alloc + req = psp_rx_assoc_req_alloc(); + + psp_rx_assoc_req_set_sock_fd(req, data_sock); + psp_rx_assoc_req_set_version(req, psp_vers.rx); + + rsp = psp_rx_assoc(ys, req); + psp_rx_assoc_req_free(req); + + if (!rsp) { + perror("ERROR: failed to Rx assoc"); + return -1; + } + + // SPI exchange + key_len = rsp->rx_key._len.key; + memcpy(info, &rsp->rx_key.spi, sizeof(spi)); + memcpy(&info[sizeof(spi)], rsp->rx_key.key, key_len); + sz = sizeof(spi) + key_len; + + send(data_sock, info, sz, MSG_WAITALL); + psp_rx_assoc_rsp_free(rsp); + + sz = recv(data_sock, info, sz, MSG_WAITALL); + if (sz < 0) { + perror("ERROR: failed to read PSP key from sock"); + return -1; + } + memcpy(&spi, info, sizeof(spi)); + + // Setup Tx assoc + teq = psp_tx_assoc_req_alloc(); + + psp_tx_assoc_req_set_sock_fd(teq, data_sock); + psp_tx_assoc_req_set_version(teq, psp_vers.tx); + psp_tx_assoc_req_set_tx_key_spi(teq, spi); + psp_tx_assoc_req_set_tx_key_key(teq, &info[sizeof(spi)], key_len); + + tsp = psp_tx_assoc(ys, teq); + psp_tx_assoc_req_free(teq); + if (!tsp) { + perror("ERROR: failed to Tx assoc"); + return -1; + } + psp_tx_assoc_rsp_free(tsp); + + return 0; +} + +static void send_ack(int sock) +{ + send(sock, "ack", 4, MSG_WAITALL); +} + +static void send_err(int sock) +{ + send(sock, "err", 4, MSG_WAITALL); +} + +static void send_str(int sock, int value) +{ + char buf[128]; + int ret; + + ret = snprintf(buf, sizeof(buf), "%d", value); + send(sock, buf, ret + 1, MSG_WAITALL); +} + +static void +run_session(struct ynl_sock *ys, struct opts *opts, + int server_sock, int comm_sock) +{ + enum accept_cfg accept_cfg = ACCEPT_CFG_NONE; + struct pollfd pfds[3]; + size_t data_read = 0; + int data_sock = -1; + + while (true) { + bool race_close = false; + int nfds; + + memset(pfds, 0, sizeof(pfds)); + + pfds[0].fd = server_sock; + pfds[0].events = POLLIN; + + pfds[1].fd = comm_sock; + pfds[1].events = POLLIN; + + nfds = 2; + if (data_sock >= 0) { + pfds[2].fd = data_sock; + pfds[2].events = POLLIN; + nfds++; + } + + dbg(" ...\n"); + if (poll(pfds, nfds, -1) < 0) { + perror("poll"); + break; + } + + /* data sock */ + if (pfds[2].revents & POLLIN) { + char buf[8192]; + ssize_t n; + + n = recv(data_sock, buf, sizeof(buf), 0); + if (n <= 0) { + if (n < 0) + perror("data read"); + close(data_sock); + data_sock = -1; + dbg("data sock closed\n"); + } else { + data_read += n; + dbg("data read %zd\n", data_read); + } + } + + /* comm sock */ + if (pfds[1].revents & POLLIN) { + static char buf[4096]; + static ssize_t off; + bool consumed; + ssize_t n; + + n = recv(comm_sock, &buf[off], sizeof(buf) - off, 0); + if (n <= 0) { + if (n < 0) + perror("comm read"); + return; + } + + off += n; + n = off; + +#define __consume(sz) \ + ({ \ + if (n == (sz)) { \ + off = 0; \ + } else { \ + off -= (sz); \ + memmove(buf, &buf[(sz)], off); \ + } \ + }) + +#define cmd(_name) \ + ({ \ + ssize_t sz = sizeof(_name); \ + bool match = n >= sz && !memcmp(buf, _name, sz); \ + \ + if (match) { \ + dbg("command: " _name "\n"); \ + __consume(sz); \ + } \ + consumed |= match; \ + match; \ + }) + + do { + consumed = false; + + if (cmd("read len")) + send_str(comm_sock, data_read); + + if (cmd("data echo")) { + if (data_sock >= 0) + send(data_sock, "echo", 5, + MSG_WAITALL); + else + fprintf(stderr, "WARN: echo but no data sock\n"); + send_ack(comm_sock); + } + if (cmd("data close")) { + if (data_sock >= 0) { + close(data_sock); + data_sock = -1; + send_ack(comm_sock); + } else { + race_close = true; + } + } + if (cmd("conn psp")) { + if (accept_cfg != ACCEPT_CFG_NONE) + fprintf(stderr, "WARN: old conn config still set!\n"); + accept_cfg = ACCEPT_CFG_PSP; + send_ack(comm_sock); + /* next two bytes are versions */ + if (off >= 2) { + memcpy(&psp_vers, buf, 2); + __consume(2); + } else { + fprintf(stderr, "WARN: short conn psp command!\n"); + } + } + if (cmd("conn clr")) { + if (accept_cfg != ACCEPT_CFG_NONE) + fprintf(stderr, "WARN: old conn config still set!\n"); + accept_cfg = ACCEPT_CFG_CLEAR; + send_ack(comm_sock); + } + if (cmd("exit")) + should_quit = true; +#undef cmd + + if (!consumed) { + fprintf(stderr, "WARN: unknown cmd: [%zd] %s\n", + off, buf); + } + } while (consumed && off); + } + + /* server sock */ + if (pfds[0].revents & POLLIN) { + if (data_sock >= 0) { + fprintf(stderr, "WARN: new data sock but old one still here\n"); + close(data_sock); + data_sock = -1; + } + data_sock = accept(server_sock, NULL, NULL); + if (data_sock < 0) { + perror("accept"); + continue; + } + data_read = 0; + + if (accept_cfg == ACCEPT_CFG_CLEAR) { + dbg("new data sock: clear\n"); + /* nothing to do */ + } else if (accept_cfg == ACCEPT_CFG_PSP) { + dbg("new data sock: psp\n"); + conn_setup_psp(ys, opts, data_sock); + } else { + fprintf(stderr, "WARN: new data sock but no config\n"); + } + accept_cfg = ACCEPT_CFG_NONE; + } + + if (race_close) { + if (data_sock >= 0) { + /* indeed, ordering problem, handle the close */ + close(data_sock); + data_sock = -1; + send_ack(comm_sock); + } else { + fprintf(stderr, "WARN: close but no data sock\n"); + send_err(comm_sock); + } + } + } + dbg("session ending\n"); +} + +static int spawn_server(struct opts *opts) +{ + struct sockaddr_in6 addr; + int fd; + + fd = socket(AF_INET6, SOCK_STREAM, 0); + if (fd < 0) { + perror("can't open socket"); + return -1; + } + + memset(&addr, 0, sizeof(addr)); + + addr.sin6_family = AF_INET6; + addr.sin6_addr = in6addr_any; + addr.sin6_port = htons(opts->port); + + if (bind(fd, (struct sockaddr *)&addr, sizeof(addr))) { + perror("can't bind socket"); + return -1; + } + + if (listen(fd, 5)) { + perror("can't listen"); + return -1; + } + + return fd; +} + +static int run_responder(struct ynl_sock *ys, struct opts *opts) +{ + int server_sock, comm; + + server_sock = spawn_server(opts); + if (server_sock < 0) + return 4; + + while (!should_quit) { + comm = accept(server_sock, NULL, NULL); + if (comm < 0) { + perror("accept failed"); + } else { + run_session(ys, opts, server_sock, comm); + close(comm); + } + } + + return 0; +} + +static void usage(const char *name, const char *miss) +{ + if (miss) + fprintf(stderr, "Missing argument: %s\n", miss); + + fprintf(stderr, "Usage: %s -p port [-v] [-d psp-dev-id]\n", name); + exit(EXIT_FAILURE); +} + +static void parse_cmd_opts(int argc, char **argv, struct opts *opts) +{ + int opt; + + while ((opt = getopt(argc, argv, "vp:d:")) != -1) { + switch (opt) { + case 'v': + opts->verbose = 1; + break; + case 'p': + opts->port = atoi(optarg); + break; + case 'd': + opts->devid = atoi(optarg); + break; + default: + usage(argv[0], NULL); + } + } +} + +static int psp_dev_set_ena(struct ynl_sock *ys, __u32 dev_id, __u32 versions) +{ + struct psp_dev_set_req *sreq; + struct psp_dev_set_rsp *srsp; + + fprintf(stderr, "Set PSP enable on device %d to 0x%x\n", + dev_id, versions); + + sreq = psp_dev_set_req_alloc(); + + psp_dev_set_req_set_id(sreq, dev_id); + psp_dev_set_req_set_psp_versions_ena(sreq, versions); + + srsp = psp_dev_set(ys, sreq); + psp_dev_set_req_free(sreq); + if (!srsp) + return 10; + + psp_dev_set_rsp_free(srsp); + return 0; +} + +int main(int argc, char **argv) +{ + struct psp_dev_get_list *dev_list; + bool devid_found = false; + __u32 ver_ena, ver_cap; + struct opts opts = {}; + struct ynl_error yerr; + struct ynl_sock *ys; + int first_id = 0; + int ret; + + parse_cmd_opts(argc, argv, &opts); + if (!opts.port) + usage(argv[0], "port"); // exits + + ys = ynl_sock_create(&ynl_psp_family, &yerr); + if (!ys) { + fprintf(stderr, "YNL: %s\n", yerr.msg); + return 1; + } + + dev_list = psp_dev_get_dump(ys); + if (ynl_dump_empty(dev_list)) { + if (ys->err.code) + goto err_close; + fprintf(stderr, "No PSP devices\n"); + goto err_close_silent; + } + + ynl_dump_foreach(dev_list, d) { + if (opts.devid) { + devid_found = true; + ver_ena = d->psp_versions_ena; + ver_cap = d->psp_versions_cap; + } else if (!first_id) { + first_id = d->id; + ver_ena = d->psp_versions_ena; + ver_cap = d->psp_versions_cap; + } else { + fprintf(stderr, "Multiple PSP devices found\n"); + goto err_close_silent; + } + } + psp_dev_get_list_free(dev_list); + + if (opts.devid && !devid_found) { + fprintf(stderr, "PSP device %d requested on cmdline, not found\n", + opts.devid); + goto err_close_silent; + } else if (!opts.devid) { + opts.devid = first_id; + } + + if (ver_ena != ver_cap) { + ret = psp_dev_set_ena(ys, opts.devid, ver_cap); + if (ret) + goto err_close; + } + + ret = run_responder(ys, &opts); + + if (ver_ena != ver_cap && psp_dev_set_ena(ys, opts.devid, ver_ena)) + fprintf(stderr, "WARN: failed to set the PSP versions back\n"); + + ynl_sock_destroy(ys); + + return ret; + +err_close: + fprintf(stderr, "YNL: %s\n", ys->err.msg); +err_close_silent: + ynl_sock_destroy(ys); + return 2; +} diff --git a/tools/testing/selftests/drivers/net/queues.py b/tools/testing/selftests/drivers/net/queues.py index 30f29096e27c..236005290a33 100755 --- a/tools/testing/selftests/drivers/net/queues.py +++ b/tools/testing/selftests/drivers/net/queues.py @@ -1,32 +1,73 @@ #!/usr/bin/env python3 # SPDX-License-Identifier: GPL-2.0 -from lib.py import ksft_run, ksft_exit, ksft_eq, KsftSkipEx -from lib.py import EthtoolFamily, NetdevFamily +from lib.py import ksft_disruptive, ksft_exit, ksft_run +from lib.py import ksft_eq, ksft_not_in, ksft_raises, KsftSkipEx, KsftFailEx +from lib.py import EthtoolFamily, NetdevFamily, NlError from lib.py import NetDrvEnv -from lib.py import cmd +from lib.py import bkg, cmd, defer, ip +import errno import glob +import os +import socket +import struct - -def sys_get_queues(ifname) -> int: - folders = glob.glob(f'/sys/class/net/{ifname}/queues/rx-*') +def sys_get_queues(ifname, qtype='rx') -> int: + folders = glob.glob(f'/sys/class/net/{ifname}/queues/{qtype}-*') return len(folders) -def nl_get_queues(cfg, nl): +def nl_get_queues(cfg, nl, qtype='rx'): queues = nl.queue_get({'ifindex': cfg.ifindex}, dump=True) if queues: - return len([q for q in queues if q['type'] == 'rx']) + return len([q for q in queues if q['type'] == qtype]) return None +def check_xsk(cfg, nl, xdp_queue_id=0) -> None: + # Probe for support + xdp = cmd(f'{cfg.net_lib_dir / "xdp_helper"} - -', fail=False) + if xdp.ret == 255: + raise KsftSkipEx('AF_XDP unsupported') + elif xdp.ret > 0: + raise KsftFailEx('unable to create AF_XDP socket') + + with bkg(f'{cfg.net_lib_dir / "xdp_helper"} {cfg.ifindex} {xdp_queue_id}', + ksft_wait=3): + + rx = tx = False + + queues = nl.queue_get({'ifindex': cfg.ifindex}, dump=True) + if not queues: + raise KsftSkipEx("Netlink reports no queues") + + for q in queues: + if q['id'] == 0: + if q['type'] == 'rx': + rx = True + if q['type'] == 'tx': + tx = True + + ksft_eq(q.get('xsk', None), {}, + comment="xsk attr on queue we configured") + else: + ksft_not_in('xsk', q, + comment="xsk attr on queue we didn't configure") + + ksft_eq(rx, True) + ksft_eq(tx, True) + + def get_queues(cfg, nl) -> None: - queues = nl_get_queues(cfg, nl) - if not queues: - raise KsftSkipEx('queue-get not supported by device') + snl = NetdevFamily(recv_size=4096) - expected = sys_get_queues(cfg.dev['ifname']) - ksft_eq(queues, expected) + for qtype in ['rx', 'tx']: + queues = nl_get_queues(cfg, snl, qtype) + if not queues: + raise KsftSkipEx('queue-get not supported by device') + + expected = sys_get_queues(cfg.dev['ifname'], qtype) + ksft_eq(queues, expected) def addremove_queues(cfg, nl) -> None: @@ -40,10 +81,9 @@ def addremove_queues(cfg, nl) -> None: netnl = EthtoolFamily() channels = netnl.channels_get({'header': {'dev-index': cfg.ifindex}}) - if channels['combined-count'] == 0: - rx_type = 'rx' - else: - rx_type = 'combined' + rx_type = 'rx' + if channels.get('combined-count', 0) > 0: + rx_type = 'combined' expected = curr_queues - 1 cmd(f"ethtool -L {cfg.dev['ifname']} {rx_type} {expected}", timeout=10) @@ -56,9 +96,28 @@ def addremove_queues(cfg, nl) -> None: ksft_eq(queues, expected) +@ksft_disruptive +def check_down(cfg, nl) -> None: + # Check the NAPI IDs before interface goes down and hides them + napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True) + + ip(f"link set dev {cfg.dev['ifname']} down") + defer(ip, f"link set dev {cfg.dev['ifname']} up") + + with ksft_raises(NlError) as cm: + nl.queue_get({'ifindex': cfg.ifindex, 'id': 0, 'type': 'rx'}) + ksft_eq(cm.exception.nl_msg.error, -errno.ENOENT) + + if napis: + with ksft_raises(NlError) as cm: + nl.napi_get({'id': napis[0]['id']}) + ksft_eq(cm.exception.nl_msg.error, -errno.ENOENT) + + def main() -> None: - with NetDrvEnv(__file__, queue_count=3) as cfg: - ksft_run([get_queues, addremove_queues], args=(cfg, NetdevFamily())) + with NetDrvEnv(__file__, queue_count=100) as cfg: + ksft_run([get_queues, addremove_queues, check_down, check_xsk], + args=(cfg, NetdevFamily())) ksft_exit() diff --git a/tools/testing/selftests/drivers/net/ring_reconfig.py b/tools/testing/selftests/drivers/net/ring_reconfig.py new file mode 100755 index 000000000000..f9530a8b0856 --- /dev/null +++ b/tools/testing/selftests/drivers/net/ring_reconfig.py @@ -0,0 +1,167 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +""" +Test channel and ring size configuration via ethtool (-L / -G). +""" + +from lib.py import ksft_run, ksft_exit, ksft_pr +from lib.py import ksft_eq +from lib.py import NetDrvEpEnv, EthtoolFamily, GenerateTraffic +from lib.py import defer, NlError + + +def channels(cfg) -> None: + """ + Twiddle channel counts in various combinations of parameters. + We're only looking for driver adhering to the requested config + if the config is accepted and crashes. + """ + ehdr = {'header':{'dev-index': cfg.ifindex}} + chans = cfg.eth.channels_get(ehdr) + + all_keys = ["rx", "tx", "combined"] + mixes = [{"combined"}, {"rx", "tx"}, {"rx", "combined"}, {"tx", "combined"}, + {"rx", "tx", "combined"},] + + # Get the set of keys that device actually supports + restore = {} + supported = set() + for key in all_keys: + if key + "-max" in chans: + supported.add(key) + restore |= {key + "-count": chans[key + "-count"]} + + defer(cfg.eth.channels_set, ehdr | restore) + + def test_config(config): + try: + cfg.eth.channels_set(ehdr | config) + get = cfg.eth.channels_get(ehdr) + for k, v in config.items(): + ksft_eq(get.get(k, 0), v) + except NlError as e: + failed.append(mix) + ksft_pr("Can't set", config, e) + else: + ksft_pr("Okay", config) + + failed = [] + for mix in mixes: + if not mix.issubset(supported): + continue + + # Set all the values in the mix to 1, other supported to 0 + config = {} + for key in all_keys: + config[key + "-count"] = 1 if key in mix else 0 + test_config(config) + + for mix in mixes: + if not mix.issubset(supported): + continue + if mix in failed: + continue + + # Set all the values in the mix to max, other supported to 0 + config = {} + for key in all_keys: + config[key + "-count"] = chans[key + '-max'] if key in mix else 0 + test_config(config) + + +def _configure_min_ring_cnt(cfg) -> None: + """ Try to configure a single Rx/Tx ring. """ + ehdr = {'header':{'dev-index': cfg.ifindex}} + chans = cfg.eth.channels_get(ehdr) + + all_keys = ["rx-count", "tx-count", "combined-count"] + restore = {} + config = {} + for key in all_keys: + if key in chans: + restore[key] = chans[key] + config[key] = 0 + + if chans.get('combined-count', 0) > 1: + config['combined-count'] = 1 + elif chans.get('rx-count', 0) > 1 and chans.get('tx-count', 0) > 1: + config['tx-count'] = 1 + config['rx-count'] = 1 + else: + # looks like we're already on 1 channel + return + + cfg.eth.channels_set(ehdr | config) + defer(cfg.eth.channels_set, ehdr | restore) + + +def ringparam(cfg) -> None: + """ + Tweak the ringparam configuration. Try to run some traffic over min + ring size to make sure it actually functions. + """ + ehdr = {'header':{'dev-index': cfg.ifindex}} + rings = cfg.eth.rings_get(ehdr) + + restore = {} + maxes = {} + params = set() + for key in rings.keys(): + if 'max' in key: + param = key[:-4] + maxes[param] = rings[key] + params.add(param) + restore[param] = rings[param] + + defer(cfg.eth.rings_set, ehdr | restore) + + # Speed up the reconfig by configuring just one ring + _configure_min_ring_cnt(cfg) + + # Try to reach min on all settings + for param in params: + val = rings[param] + while True: + try: + cfg.eth.rings_set({'header':{'dev-index': cfg.ifindex}, + param: val // 2}) + if val == 0: + break + val //= 2 + except NlError: + break + + get = cfg.eth.rings_get(ehdr) + ksft_eq(get[param], val) + + ksft_pr(f"Reached min for '{param}' at {val} (max {rings[param]})") + + GenerateTraffic(cfg).wait_pkts_and_stop(10000) + + # Try max across all params, if the driver supports large rings + # this may OOM so we ignore errors + try: + ksft_pr("Applying max settings") + config = {p: maxes[p] for p in params} + cfg.eth.rings_set(ehdr | config) + except NlError as e: + ksft_pr("Can't set max params", config, e) + else: + GenerateTraffic(cfg).wait_pkts_and_stop(10000) + + +def main() -> None: + """ Ksft boiler plate main """ + + with NetDrvEpEnv(__file__) as cfg: + cfg.eth = EthtoolFamily() + + ksft_run([channels, + ringparam], + args=(cfg, )) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/shaper.py b/tools/testing/selftests/drivers/net/shaper.py new file mode 100755 index 000000000000..11310f19bfa0 --- /dev/null +++ b/tools/testing/selftests/drivers/net/shaper.py @@ -0,0 +1,461 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_true, KsftSkipEx +from lib.py import EthtoolFamily, NetshaperFamily +from lib.py import NetDrvEnv +from lib.py import NlError +from lib.py import cmd + +def get_shapers(cfg, nl_shaper) -> None: + try: + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + + # Default configuration: no shapers configured. + ksft_eq(len(shapers), 0) + +def get_caps(cfg, nl_shaper) -> None: + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex}, dump=True) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + + # Each device implementing shaper support must support some + # features in at least a scope. + ksft_true(len(caps)> 0) + +def set_qshapers(cfg, nl_shaper) -> None: + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'queue'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + if not 'support-bw-max' in caps or not 'support-metric-bps' in caps: + raise KsftSkipEx("device does not support queue scope shapers with bw_max and metric bps") + + cfg.queues = True; + netnl = EthtoolFamily() + channels = netnl.channels_get({'header': {'dev-index': cfg.ifindex}}) + if channels['combined-count'] == 0: + cfg.rx_type = 'rx' + cfg.nr_queues = channels['rx-count'] + else: + cfg.rx_type = 'combined' + cfg.nr_queues = channels['combined-count'] + if cfg.nr_queues < 3: + raise KsftSkipEx(f"device does not support enough queues min 3 found {cfg.nr_queues}") + + nl_shaper.set({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 10000}) + nl_shaper.set({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 2}, + 'metric': 'bps', + 'bw-max': 20000}) + + # Querying a specific shaper not yet configured must fail. + raised = False + try: + shaper_q0 = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 0}}) + except (NlError): + raised = True + ksft_eq(raised, True) + + shaper_q1 = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + ksft_eq(shaper_q1, {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 10000}) + + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 10000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 2}, + 'metric': 'bps', + 'bw-max': 20000}]) + +def del_qshapers(cfg, nl_shaper) -> None: + if not cfg.queues: + raise KsftSkipEx("queue shapers not supported by device, skipping delete") + + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 2}}) + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(len(shapers), 0) + +def set_nshapers(cfg, nl_shaper) -> None: + # Check required features. + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'netdev'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + if not 'support-bw-max' in caps or not 'support-metric-bps' in caps: + raise KsftSkipEx("device does not support nested netdev scope shapers with weight") + + cfg.netdev = True; + nl_shaper.set({'ifindex': cfg.ifindex, + 'handle': {'scope': 'netdev', 'id': 0}, + 'bw-max': 100000}) + + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'handle': {'scope': 'netdev'}, + 'metric': 'bps', + 'bw-max': 100000}]) + +def del_nshapers(cfg, nl_shaper) -> None: + if not cfg.netdev: + raise KsftSkipEx("netdev shaper not supported by device, skipping delete") + + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'netdev'}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(len(shapers), 0) + +def basic_groups(cfg, nl_shaper) -> None: + if not cfg.netdev: + raise KsftSkipEx("netdev shaper not supported by the device") + if cfg.nr_queues < 3: + raise KsftSkipEx(f"netdev does not have enough queues min 3 reported {cfg.nr_queues}") + + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'queue'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + if not 'support-weight' in caps: + raise KsftSkipEx("device does not support queue scope shapers with weight") + + node_handle = nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 1}, + 'weight': 1}, + {'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}], + 'handle': {'scope':'netdev'}, + 'metric': 'bps', + 'bw-max': 10000}) + ksft_eq(node_handle, {'ifindex': cfg.ifindex, + 'handle': {'scope': 'netdev'}}) + + shaper = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + ksft_eq(shaper, {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'weight': 1 }) + + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 2}}) + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + + # Deleting all the leaves shaper does not affect the node one + # when the latter has 'netdev' scope. + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(len(shapers), 1) + + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'netdev'}}) + +def qgroups(cfg, nl_shaper) -> None: + if cfg.nr_queues < 4: + raise KsftSkipEx(f"netdev does not have enough queues min 4 reported {cfg.nr_queues}") + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'node'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + if not 'support-bw-max' in caps or not 'support-metric-bps' in caps: + raise KsftSkipEx("device does not support node scope shapers with bw_max and metric bps") + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'queue'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("shapers not supported by the device") + raise + if not 'support-nesting' in caps or not 'support-weight' in caps or not 'support-metric-bps' in caps: + raise KsftSkipEx("device does not support nested queue scope shapers with weight") + + cfg.groups = True; + node_handle = nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}, + {'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}], + 'handle': {'scope':'node'}, + 'metric': 'bps', + 'bw-max': 10000}) + node_id = node_handle['handle']['id'] + + shaper = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + ksft_eq(shaper, {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}) + shaper = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'node', 'id': node_id}}) + ksft_eq(shaper, {'ifindex': cfg.ifindex, + 'handle': {'scope': 'node', 'id': node_id}, + 'parent': {'scope': 'netdev'}, + 'metric': 'bps', + 'bw-max': 10000}) + + # Grouping to a specified, not existing node scope shaper must fail + raised = False + try: + nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 3}, + 'weight': 3}], + 'handle': {'scope':'node', 'id': node_id + 1}, + 'metric': 'bps', + 'bw-max': 10000}) + + except (NlError): + raised = True + ksft_eq(raised, True) + + # Add to an existing node + node_handle = nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 3}, + 'weight': 4}], + 'handle': {'scope':'node', 'id': node_id}}) + ksft_eq(node_handle, {'ifindex': cfg.ifindex, + 'handle': {'scope': 'node', 'id': node_id}}) + + shaper = nl_shaper.get({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 3}}) + ksft_eq(shaper, {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 3}, + 'weight': 4}) + + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 2}}) + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 1}}) + + # Deleting a non empty node will move the leaves downstream. + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'node', 'id': node_id}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 3}, + 'weight': 4}]) + + # Finish and verify the complete cleanup. + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': 3}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(len(shapers), 0) + +def delegation(cfg, nl_shaper) -> None: + if not cfg.groups: + raise KsftSkipEx("device does not support node scope") + try: + caps = nl_shaper.cap_get({'ifindex': cfg.ifindex, + 'scope':'node'}) + except NlError as e: + if e.error == 95: + raise KsftSkipEx("node scope shapers not supported by the device") + raise + if not 'support-nesting' in caps: + raise KsftSkipEx("device does not support node scope shapers nesting") + + node_handle = nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}, + {'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}, + {'handle': {'scope': 'queue', 'id': 3}, + 'weight': 1}], + 'handle': {'scope':'node'}, + 'metric': 'bps', + 'bw-max': 10000}) + node_id = node_handle['handle']['id'] + + # Create the nested node and validate the hierarchy + nested_node_handle = nl_shaper.group({ + 'ifindex': cfg.ifindex, + 'leaves':[{'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}, + {'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}], + 'handle': {'scope':'node'}, + 'metric': 'bps', + 'bw-max': 5000}) + nested_node_id = nested_node_handle['handle']['id'] + ksft_true(nested_node_id != node_id) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': nested_node_id}, + 'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': nested_node_id}, + 'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 3}, + 'weight': 1}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'node', 'id': node_id}, + 'metric': 'bps', + 'bw-max': 10000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'node', 'id': nested_node_id}, + 'metric': 'bps', + 'bw-max': 5000}]) + + # Deleting a non empty node will move the leaves downstream. + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'node', 'id': nested_node_id}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 1}, + 'weight': 3}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 2}, + 'weight': 2}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'node', 'id': node_id}, + 'handle': {'scope': 'queue', 'id': 3}, + 'weight': 1}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'node', 'id': node_id}, + 'metric': 'bps', + 'bw-max': 10000}]) + + # Final cleanup. + for i in range(1, 4): + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': i}}) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(len(shapers), 0) + +def queue_update(cfg, nl_shaper) -> None: + if cfg.nr_queues < 4: + raise KsftSkipEx(f"netdev does not have enough queues min 4 reported {cfg.nr_queues}") + if not cfg.queues: + raise KsftSkipEx("device does not support queue scope") + + for i in range(3): + nl_shaper.set({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': i}, + 'metric': 'bps', + 'bw-max': (i + 1) * 1000}) + # Delete a channel, with no shapers configured on top of the related + # queue: no changes expected + cmd(f"ethtool -L {cfg.dev['ifname']} {cfg.rx_type} 3", timeout=10) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 0}, + 'metric': 'bps', + 'bw-max': 1000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 2000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 2}, + 'metric': 'bps', + 'bw-max': 3000}]) + + # Delete a channel, with a shaper configured on top of the related + # queue: the shaper must be deleted, too + cmd(f"ethtool -L {cfg.dev['ifname']} {cfg.rx_type} 2", timeout=10) + + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 0}, + 'metric': 'bps', + 'bw-max': 1000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 2000}]) + + # Restore the original channels number, no expected changes + cmd(f"ethtool -L {cfg.dev['ifname']} {cfg.rx_type} {cfg.nr_queues}", timeout=10) + shapers = nl_shaper.get({'ifindex': cfg.ifindex}, dump=True) + ksft_eq(shapers, [{'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 0}, + 'metric': 'bps', + 'bw-max': 1000}, + {'ifindex': cfg.ifindex, + 'parent': {'scope': 'netdev'}, + 'handle': {'scope': 'queue', 'id': 1}, + 'metric': 'bps', + 'bw-max': 2000}]) + + # Final cleanup. + for i in range(0, 2): + nl_shaper.delete({'ifindex': cfg.ifindex, + 'handle': {'scope': 'queue', 'id': i}}) + +def main() -> None: + with NetDrvEnv(__file__, queue_count=4) as cfg: + cfg.queues = False + cfg.netdev = False + cfg.groups = False + cfg.nr_queues = 0 + ksft_run([get_shapers, + get_caps, + set_qshapers, + del_qshapers, + set_nshapers, + del_nshapers, + basic_groups, + qgroups, + delegation, + queue_update], args=(cfg, NetshaperFamily())) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/stats.py b/tools/testing/selftests/drivers/net/stats.py index 820b8e0a22c6..b08e4d48b15c 100755 --- a/tools/testing/selftests/drivers/net/stats.py +++ b/tools/testing/selftests/drivers/net/stats.py @@ -1,10 +1,20 @@ #!/usr/bin/env python3 # SPDX-License-Identifier: GPL-2.0 +""" +Tests related to standard netdevice statistics. +""" + +import errno +import subprocess +import time from lib.py import ksft_run, ksft_exit, ksft_pr -from lib.py import ksft_ge, ksft_eq, ksft_in, ksft_true, ksft_raises, KsftSkipEx, KsftXfailEx +from lib.py import ksft_ge, ksft_eq, ksft_is, ksft_in, ksft_lt, ksft_true, ksft_raises +from lib.py import KsftSkipEx, KsftFailEx +from lib.py import ksft_disruptive from lib.py import EthtoolFamily, NetdevFamily, RtnlFamily, NlError from lib.py import NetDrvEnv +from lib.py import cmd, ip, defer ethnl = EthtoolFamily() netfam = NetdevFamily() @@ -12,13 +22,16 @@ rtnl = RtnlFamily() def check_pause(cfg) -> None: - global ethnl + """ + Check that drivers which support Pause config also report standard + pause stats. + """ try: ethnl.pause_get({"header": {"dev-index": cfg.ifindex}}) except NlError as e: - if e.error == 95: - raise KsftXfailEx("pause not supported by the device") + if e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("pause not supported by the device") from e raise data = ethnl.pause_get({"header": {"dev-index": cfg.ifindex, @@ -27,13 +40,16 @@ def check_pause(cfg) -> None: def check_fec(cfg) -> None: - global ethnl + """ + Check that drivers which support FEC config also report standard + FEC stats. + """ try: ethnl.fec_get({"header": {"dev-index": cfg.ifindex}}) except NlError as e: - if e.error == 95: - raise KsftXfailEx("FEC not supported by the device") + if e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("FEC not supported by the device") from e raise data = ethnl.fec_get({"header": {"dev-index": cfg.ifindex, @@ -41,16 +57,48 @@ def check_fec(cfg) -> None: ksft_true(data['stats'], "driver does not report stats") +def check_fec_hist(cfg) -> None: + """ + Check that drivers which support FEC histogram statistics report + reasonable values. + """ + + try: + data = ethnl.fec_get({"header": {"dev-index": cfg.ifindex, + "flags": {'stats'}}}) + except NlError as e: + if e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("FEC not supported by the device") from e + raise + if 'stats' not in data: + raise KsftSkipEx("FEC stats not supported by the device") + if 'hist' not in data['stats']: + raise KsftSkipEx("FEC histogram not supported by the device") + + hist = data['stats']['hist'] + for fec_bin in hist: + for key in ['bin-low', 'bin-high', 'bin-val']: + ksft_in(key, fec_bin, + "Drivers should always report FEC bin range and value") + ksft_ge(fec_bin['bin-high'], fec_bin['bin-low'], + "FEC bin range should be valid") + if 'bin-val-per-lane' in fec_bin: + ksft_eq(sum(fec_bin['bin-val-per-lane']), fec_bin['bin-val'], + "FEC bin value should be equal to sum of per-plane values") + + def pkt_byte_sum(cfg) -> None: - global netfam, rtnl + """ + Check that qstat and interface stats match in value. + """ def get_qstat(test): - global netfam stats = netfam.qstats_get({}, dump=True) if stats: for qs in stats: if qs["ifindex"]== test.ifindex: return qs + return None qstat = get_qstat(cfg) if qstat is None: @@ -71,15 +119,14 @@ def pkt_byte_sum(cfg) -> None: for _ in range(10): rtstat = rtnl.getlink({"ifi-index": cfg.ifindex})['stats64'] if stat_cmp(rtstat, qstat) < 0: - raise Exception("RTNL stats are lower, fetched later") + raise KsftFailEx("RTNL stats are lower, fetched later") qstat = get_qstat(cfg) if stat_cmp(rtstat, qstat) > 0: - raise Exception("Qstats are lower, fetched later") + raise KsftFailEx("Qstats are lower, fetched later") def qstat_by_ifindex(cfg) -> None: - global netfam - global rtnl + """ Qstats Netlink API tests - querying by ifindex. """ # Construct a map ifindex -> [dump, by-index, dump] ifindexes = {} @@ -87,7 +134,7 @@ def qstat_by_ifindex(cfg) -> None: for entry in stats: ifindexes[entry['ifindex']] = [entry, None, None] - for ifindex in ifindexes.keys(): + for ifindex in ifindexes: entry = netfam.qstats_get({"ifindex": ifindex}, dump=True) ksft_eq(len(entry), 1) ifindexes[entry[0]['ifindex']][1] = entry[0] @@ -107,6 +154,23 @@ def qstat_by_ifindex(cfg) -> None: ksft_ge(triple[1][key], triple[0][key], comment="bad key: " + key) ksft_ge(triple[2][key], triple[1][key], comment="bad key: " + key) + # Sanity check the dumps + queues = NetdevFamily(recv_size=4096).qstats_get({"scope": "queue"}, dump=True) + # Reformat the output into {ifindex: {rx: [id, id, ...], tx: [id, id, ...]}} + parsed = {} + for entry in queues: + ifindex = entry["ifindex"] + if ifindex not in parsed: + parsed[ifindex] = {"rx":[], "tx": []} + parsed[ifindex][entry["queue-type"]].append(entry['queue-id']) + # Now, validate + for ifindex, queues in parsed.items(): + for qtype in ['rx', 'tx']: + ksft_eq(len(queues[qtype]), len(set(queues[qtype])), + comment="repeated queue keys") + ksft_eq(len(queues[qtype]), max(queues[qtype]) + 1, + comment="missing queue keys") + # Test invalid dumps # 0 is invalid with ksft_raises(NlError) as cm: @@ -117,12 +181,12 @@ def qstat_by_ifindex(cfg) -> None: # loopback has no stats with ksft_raises(NlError) as cm: netfam.qstats_get({"ifindex": 1}, dump=True) - ksft_eq(cm.exception.nl_msg.error, -95) + ksft_eq(cm.exception.nl_msg.error, -errno.EOPNOTSUPP) ksft_eq(cm.exception.nl_msg.extack['bad-attr'], '.ifindex') # Try to get stats for lowest unused ifindex but not 0 devs = rtnl.getlink({}, dump=True) - all_ifindexes = set([dev["ifi-index"] for dev in devs]) + all_ifindexes = set(dev["ifi-index"] for dev in devs) lowest = 2 while lowest in all_ifindexes: lowest += 1 @@ -133,9 +197,122 @@ def qstat_by_ifindex(cfg) -> None: ksft_eq(cm.exception.nl_msg.extack['bad-attr'], '.ifindex') +@ksft_disruptive +def check_down(cfg) -> None: + """ Test statistics (interface and qstat) are not impacted by ifdown """ + + try: + qstat = netfam.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + except NlError as e: + if e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("qstats not supported by the device") from e + raise + + ip(f"link set dev {cfg.dev['ifname']} down") + defer(ip, f"link set dev {cfg.dev['ifname']} up") + + qstat2 = netfam.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + for k in qstat: + ksft_ge(qstat2[k], qstat[k], comment=f"{k} went backwards on device down") + + # exercise per-queue API to make sure that "device down" state + # is handled correctly and doesn't crash + netfam.qstats_get({"ifindex": cfg.ifindex, "scope": "queue"}, dump=True) + + +def __run_inf_loop(body): + body = body.strip() + if body[-1] != ';': + body += ';' + + return subprocess.Popen(f"while true; do {body} done", shell=True, + stdout=subprocess.PIPE, stderr=subprocess.PIPE) + + +def __stats_increase_sanely(old, new) -> None: + for k in old.keys(): + ksft_ge(new[k], old[k]) + ksft_lt(new[k] - old[k], 1 << 31, comment="likely wrapping error") + + +def procfs_hammer(cfg) -> None: + """ + Reading stats via procfs only holds the RCU lock, which is not an exclusive + lock, make sure drivers can handle parallel reads of stats. + """ + one = __run_inf_loop("cat /proc/net/dev") + defer(one.kill) + two = __run_inf_loop("cat /proc/net/dev") + defer(two.kill) + + time.sleep(1) + # Make sure the processes are running + ksft_is(one.poll(), None) + ksft_is(two.poll(), None) + + rtstat1 = rtnl.getlink({"ifi-index": cfg.ifindex})['stats64'] + time.sleep(2) + rtstat2 = rtnl.getlink({"ifi-index": cfg.ifindex})['stats64'] + __stats_increase_sanely(rtstat1, rtstat2) + # defers will kill the loops + + +@ksft_disruptive +def procfs_downup_hammer(cfg) -> None: + """ + Reading stats via procfs only holds the RCU lock, drivers often try + to sleep when reading the stats, or don't protect against races. + """ + # Set a large number of queues, + # we'll flip between min(max_queues, 64) and 1 + channels = ethnl.channels_get({'header': {'dev-index': cfg.ifindex}}) + if channels['combined-count'] == 0: + rx_type = 'rx' + else: + rx_type = 'combined' + cur_queue_cnt = channels[f'{rx_type}-count'] + max_queue_cnt = min(channels[f'{rx_type}-max'], 64) + + cmd(f"ethtool -L {cfg.ifname} {rx_type} {max_queue_cnt}") + defer(cmd, f"ethtool -L {cfg.ifname} {rx_type} {cur_queue_cnt}") + + # Real test stats + stats = __run_inf_loop("cat /proc/net/dev") + defer(stats.kill) + + ipset = f"ip link set dev {cfg.ifname}" + defer(ip, f"link set dev {cfg.ifname} up") + # The "echo -n 1" lets us count iterations below + updown = f"{ipset} down; sleep 0.05; {ipset} up; sleep 0.05; " + \ + f"ethtool -L {cfg.ifname} {rx_type} 1; " + \ + f"ethtool -L {cfg.ifname} {rx_type} {max_queue_cnt}; " + \ + "echo -n 1" + updown = __run_inf_loop(updown) + kill_updown = defer(updown.kill) + + time.sleep(1) + # Make sure the processes are running + ksft_is(stats.poll(), None) + ksft_is(updown.poll(), None) + + rtstat1 = rtnl.getlink({"ifi-index": cfg.ifindex})['stats64'] + # We're looking for crashes, give it extra time + time.sleep(9) + rtstat2 = rtnl.getlink({"ifi-index": cfg.ifindex})['stats64'] + __stats_increase_sanely(rtstat1, rtstat2) + + kill_updown.exec() + stdout, _ = updown.communicate(timeout=5) + ksft_pr("completed up/down cycles:", len(stdout.decode('utf-8'))) + + def main() -> None: - with NetDrvEnv(__file__) as cfg: - ksft_run([check_pause, check_fec, pkt_byte_sum, qstat_by_ifindex], + """ Ksft boiler plate main """ + + with NetDrvEnv(__file__, queue_count=100) as cfg: + ksft_run([check_pause, check_fec, check_fec_hist, pkt_byte_sum, + qstat_by_ifindex, check_down, procfs_hammer, + procfs_downup_hammer], args=(cfg, )) ksft_exit() diff --git a/tools/testing/selftests/drivers/net/team/Makefile b/tools/testing/selftests/drivers/net/team/Makefile index 2d5a76d99181..1340b3df9c31 100644 --- a/tools/testing/selftests/drivers/net/team/Makefile +++ b/tools/testing/selftests/drivers/net/team/Makefile @@ -1,11 +1,18 @@ # SPDX-License-Identifier: GPL-2.0 # Makefile for net selftests -TEST_PROGS := dev_addr_lists.sh +TEST_PROGS := \ + dev_addr_lists.sh \ + options.sh \ + propagation.sh \ +# end of TEST_PROGS TEST_INCLUDES := \ ../bonding/lag_lib.sh \ ../../../net/forwarding/lib.sh \ - ../../../net/lib.sh + ../../../net/in_netns.sh \ + ../../../net/lib.sh \ + ../../../net/lib/sh/defer.sh \ +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/team/config b/tools/testing/selftests/drivers/net/team/config index b5e3a3aad4bf..558e1d0cf565 100644 --- a/tools/testing/selftests/drivers/net/team/config +++ b/tools/testing/selftests/drivers/net/team/config @@ -1,5 +1,7 @@ CONFIG_DUMMY=y CONFIG_IPV6=y CONFIG_MACVLAN=y +CONFIG_NETDEVSIM=m CONFIG_NET_TEAM=y +CONFIG_NET_TEAM_MODE_ACTIVEBACKUP=y CONFIG_NET_TEAM_MODE_LOADBALANCE=y diff --git a/tools/testing/selftests/drivers/net/team/options.sh b/tools/testing/selftests/drivers/net/team/options.sh new file mode 100755 index 000000000000..44888f32b513 --- /dev/null +++ b/tools/testing/selftests/drivers/net/team/options.sh @@ -0,0 +1,188 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# These tests verify basic set and get functionality of the team +# driver options over netlink. + +# Run in private netns. +test_dir="$(dirname "$0")" +if [[ $# -eq 0 ]]; then + "${test_dir}"/../../../net/in_netns.sh "$0" __subprocess + exit $? +fi + +ALL_TESTS=" + team_test_options +" + +source "${test_dir}/../../../net/lib.sh" + +TEAM_PORT="team0" +MEMBER_PORT="dummy0" + +setup() +{ + ip link add name "${MEMBER_PORT}" type dummy + ip link add name "${TEAM_PORT}" type team +} + +get_and_check_value() +{ + local option_name="$1" + local expected_value="$2" + local port_flag="$3" + + local value_from_get + + if ! value_from_get=$(teamnl "${TEAM_PORT}" getoption "${option_name}" \ + "${port_flag}"); then + echo "Could not get option '${option_name}'" >&2 + return 1 + fi + + if [[ "${value_from_get}" != "${expected_value}" ]]; then + echo "Incorrect value for option '${option_name}'" >&2 + echo "get (${value_from_get}) != set (${expected_value})" >&2 + return 1 + fi +} + +set_and_check_get() +{ + local option_name="$1" + local option_value="$2" + local port_flag="$3" + + local value_from_get + + if ! teamnl "${TEAM_PORT}" setoption "${option_name}" \ + "${option_value}" "${port_flag}"; then + echo "'setoption ${option_name} ${option_value}' failed" >&2 + return 1 + fi + + get_and_check_value "${option_name}" "${option_value}" "${port_flag}" + return $? +} + +# Get a "port flag" to pass to the `teamnl` command. +# E.g. $1="dummy0" -> "port=dummy0", +# $1="" -> "" +get_port_flag() +{ + local port_name="$1" + + if [[ -n "${port_name}" ]]; then + echo "--port=${port_name}" + fi +} + +attach_port_if_specified() +{ + local port_name="$1" + + if [[ -n "${port_name}" ]]; then + ip link set dev "${port_name}" master "${TEAM_PORT}" + return $? + fi +} + +detach_port_if_specified() +{ + local port_name="$1" + + if [[ -n "${port_name}" ]]; then + ip link set dev "${port_name}" nomaster + return $? + fi +} + +# Test that an option's get value matches its set value. +# Globals: +# RET - Used by testing infra like `check_err`. +# EXIT_STATUS - Used by `log_test` for whole script exit value. +# Arguments: +# option_name - The name of the option. +# value_1 - The first value to try setting. +# value_2 - The second value to try setting. +# port_name - The (optional) name of the attached port. +team_test_option() +{ + local option_name="$1" + local value_1="$2" + local value_2="$3" + local possible_values="$2 $3 $2" + local port_name="$4" + local port_flag + + RET=0 + + echo "Setting '${option_name}' to '${value_1}' and '${value_2}'" + + attach_port_if_specified "${port_name}" + check_err $? "Couldn't attach ${port_name} to master" + port_flag=$(get_port_flag "${port_name}") + + # Set and get both possible values. + for value in ${possible_values}; do + set_and_check_get "${option_name}" "${value}" "${port_flag}" + check_err $? "Failed to set '${option_name}' to '${value}'" + done + + detach_port_if_specified "${port_name}" + check_err $? "Couldn't detach ${port_name} from its master" + + log_test "Set + Get '${option_name}' test" +} + +# Test that getting a non-existant option fails. +# Globals: +# RET - Used by testing infra like `check_err`. +# EXIT_STATUS - Used by `log_test` for whole script exit value. +# Arguments: +# option_name - The name of the option. +# port_name - The (optional) name of the attached port. +team_test_get_option_fails() +{ + local option_name="$1" + local port_name="$2" + local port_flag + + RET=0 + + attach_port_if_specified "${port_name}" + check_err $? "Couldn't attach ${port_name} to master" + port_flag=$(get_port_flag "${port_name}") + + # Just confirm that getting the value fails. + teamnl "${TEAM_PORT}" getoption "${option_name}" "${port_flag}" + check_fail $? "Shouldn't be able to get option '${option_name}'" + + detach_port_if_specified "${port_name}" + + log_test "Get '${option_name}' fails" +} + +team_test_options() +{ + # Wrong option name behavior. + team_test_get_option_fails fake_option1 + team_test_get_option_fails fake_option2 "${MEMBER_PORT}" + + # Correct set and get behavior. + team_test_option mode activebackup loadbalance + team_test_option notify_peers_count 0 5 + team_test_option notify_peers_interval 0 5 + team_test_option mcast_rejoin_count 0 5 + team_test_option mcast_rejoin_interval 0 5 + team_test_option enabled true false "${MEMBER_PORT}" + team_test_option user_linkup true false "${MEMBER_PORT}" + team_test_option user_linkup_enabled true false "${MEMBER_PORT}" + team_test_option priority 10 20 "${MEMBER_PORT}" + team_test_option queue_id 0 1 "${MEMBER_PORT}" +} + +require_command teamnl +setup +tests_run +exit "${EXIT_STATUS}" diff --git a/tools/testing/selftests/drivers/net/team/propagation.sh b/tools/testing/selftests/drivers/net/team/propagation.sh new file mode 100755 index 000000000000..4bea75b79878 --- /dev/null +++ b/tools/testing/selftests/drivers/net/team/propagation.sh @@ -0,0 +1,80 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +set -e + +NSIM_LRO_ID=$((256 + RANDOM % 256)) +NSIM_LRO_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_LRO_ID + +NSIM_DEV_SYS_NEW=/sys/bus/netdevsim/new_device +NSIM_DEV_SYS_DEL=/sys/bus/netdevsim/del_device + +cleanup() +{ + set +e + ip link del dummyteam &>/dev/null + ip link del team0 &>/dev/null + echo $NSIM_LRO_ID > $NSIM_DEV_SYS_DEL + modprobe -r netdevsim +} + +# Trigger LRO propagation to the lower. +# https://lore.kernel.org/netdev/aBvOpkIoxcr9PfDg@mini-arch/ +team_lro() +{ + # using netdevsim because it supports NETIF_F_LRO + NSIM_LRO_NAME=$(find $NSIM_LRO_SYS/net -maxdepth 1 -type d ! \ + -path $NSIM_LRO_SYS/net -exec basename {} \;) + + ip link add name team0 type team + ip link set $NSIM_LRO_NAME down + ip link set dev $NSIM_LRO_NAME master team0 + ip link set team0 up + ethtool -K team0 large-receive-offload off + + ip link del team0 +} + +# Trigger promisc propagation to the lower during IFLA_MASTER. +# https://lore.kernel.org/netdev/20250506032328.3003050-1-sdf@fomichev.me/ +team_promisc() +{ + ip link add name dummyteam type dummy + ip link add name team0 type team + ip link set dummyteam down + ip link set team0 promisc on + ip link set dev dummyteam master team0 + ip link set team0 up + + ip link del team0 + ip link del dummyteam +} + +# Trigger promisc propagation to the lower via netif_change_flags (aka +# ndo_change_rx_flags). +# https://lore.kernel.org/netdev/20250514220319.3505158-1-stfomichev@gmail.com/ +team_change_flags() +{ + ip link add name dummyteam type dummy + ip link add name team0 type team + ip link set dummyteam down + ip link set dev dummyteam master team0 + ip link set team0 up + ip link set team0 promisc on + + # Make sure we can add more L2 addresses without any issues. + ip link add link team0 address 00:00:00:00:00:01 team0.1 type macvlan + ip link set team0.1 up + + ip link del team0.1 + ip link del team0 + ip link del dummyteam +} + +trap cleanup EXIT +modprobe netdevsim || : +echo $NSIM_LRO_ID > $NSIM_DEV_SYS_NEW +udevadm settle +team_lro +team_promisc +team_change_flags diff --git a/tools/testing/selftests/drivers/net/virtio_net/Makefile b/tools/testing/selftests/drivers/net/virtio_net/Makefile index 7ec7cd3ab2cc..868ece3fea1f 100644 --- a/tools/testing/selftests/drivers/net/virtio_net/Makefile +++ b/tools/testing/selftests/drivers/net/virtio_net/Makefile @@ -1,15 +1,12 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT -TEST_PROGS = basic_features.sh \ - # +TEST_PROGS = basic_features.sh -TEST_FILES = \ - virtio_net_common.sh \ - # +TEST_FILES = virtio_net_common.sh TEST_INCLUDES = \ - ../../../net/forwarding/lib.sh \ - ../../../net/lib.sh \ - # + ../../../net/forwarding/lib.sh \ + ../../../net/lib.sh \ +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/xdp.py b/tools/testing/selftests/drivers/net/xdp.py new file mode 100755 index 000000000000..e54df158dfe9 --- /dev/null +++ b/tools/testing/selftests/drivers/net/xdp.py @@ -0,0 +1,779 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +""" +This file contains tests to verify native XDP support in network drivers. +The tests utilize the BPF program `xdp_native.bpf.o` from the `selftests.net.lib` +directory, with each test focusing on a specific aspect of XDP functionality. +""" +import random +import string +from dataclasses import dataclass +from enum import Enum + +from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_ge, ksft_ne, ksft_pr +from lib.py import KsftNamedVariant, ksft_variants +from lib.py import KsftFailEx, NetDrvEpEnv +from lib.py import EthtoolFamily, NetdevFamily, NlError +from lib.py import bkg, cmd, rand_port, wait_port_listen +from lib.py import ip, bpftool, defer + + +class TestConfig(Enum): + """Enum for XDP configuration options.""" + MODE = 0 # Configures the BPF program for a specific test + PORT = 1 # Port configuration to communicate with the remote host + ADJST_OFFSET = 2 # Tail/Head adjustment offset for extension/shrinking + ADJST_TAG = 3 # Adjustment tag to annotate the start and end of extension + + +class XDPAction(Enum): + """Enum for XDP actions.""" + PASS = 0 # Pass the packet up to the stack + DROP = 1 # Drop the packet + TX = 2 # Route the packet to the remote host + TAIL_ADJST = 3 # Adjust the tail of the packet + HEAD_ADJST = 4 # Adjust the head of the packet + + +class XDPStats(Enum): + """Enum for XDP statistics.""" + RX = 0 # Count of valid packets received for testing + PASS = 1 # Count of packets passed up to the stack + DROP = 2 # Count of packets dropped + TX = 3 # Count of incoming packets routed to the remote host + ABORT = 4 # Count of packets that were aborted + + +@dataclass +class BPFProgInfo: + """Data class to store information about a BPF program.""" + name: str # Name of the BPF program + file: str # BPF program object file + xdp_sec: str = "xdp" # XDP section name (e.g., "xdp" or "xdp.frags") + mtu: int = 1500 # Maximum Transmission Unit, default is 1500 + + +def _exchg_udp(cfg, port, test_string): + """ + Exchanges UDP packets between a local and remote host using the socat tool. + + Args: + cfg: Configuration object containing network settings. + port: Port number to use for the UDP communication. + test_string: String that the remote host will send. + + Returns: + The string received by the test host. + """ + cfg.require_cmd("socat", remote=True) + + rx_udp_cmd = f"socat -{cfg.addr_ipver} -T 2 -u UDP-RECV:{port},reuseport STDOUT" + tx_udp_cmd = f"echo -n {test_string} | socat -t 2 -u STDIN UDP:{cfg.baddr}:{port}" + + with bkg(rx_udp_cmd, exit_wait=True) as nc: + wait_port_listen(port, proto="udp") + cmd(tx_udp_cmd, host=cfg.remote, shell=True) + + return nc.stdout.strip() + + +def _test_udp(cfg, port, size=256): + """ + Tests UDP packet exchange between a local and remote host. + + Args: + cfg: Configuration object containing network settings. + port: Port number to use for the UDP communication. + size: The length of the test string to be exchanged, default is 256 characters. + + Returns: + bool: True if the received string matches the sent string, False otherwise. + """ + test_str = "".join(random.choice(string.ascii_lowercase) for _ in range(size)) + recvd_str = _exchg_udp(cfg, port, test_str) + + return recvd_str == test_str + + +def _load_xdp_prog(cfg, bpf_info): + """ + Loads an XDP program onto a network interface. + + Args: + cfg: Configuration object containing network settings. + bpf_info: BPFProgInfo object containing information about the BPF program. + + Returns: + dict: A dictionary containing the XDP program ID, name, and associated map IDs. + """ + abs_path = cfg.net_lib_dir / bpf_info.file + prog_info = {} + + cmd(f"ip link set dev {cfg.remote_ifname} mtu {bpf_info.mtu}", shell=True, host=cfg.remote) + defer(ip, f"link set dev {cfg.remote_ifname} mtu 1500", host=cfg.remote) + + cmd( + f"ip link set dev {cfg.ifname} mtu {bpf_info.mtu} xdpdrv obj {abs_path} sec {bpf_info.xdp_sec}", + shell=True + ) + defer(ip, f"link set dev {cfg.ifname} mtu 1500 xdpdrv off") + + xdp_info = ip(f"-d link show dev {cfg.ifname}", json=True)[0] + prog_info["id"] = xdp_info["xdp"]["prog"]["id"] + prog_info["name"] = xdp_info["xdp"]["prog"]["name"] + prog_id = prog_info["id"] + + map_ids = bpftool(f"prog show id {prog_id}", json=True)["map_ids"] + prog_info["maps"] = {} + for map_id in map_ids: + name = bpftool(f"map show id {map_id}", json=True)["name"] + prog_info["maps"][name] = map_id + + return prog_info + + +def format_hex_bytes(value): + """ + Helper function that converts an integer into a formatted hexadecimal byte string. + + Args: + value: An integer representing the number to be converted. + + Returns: + A string representing hexadecimal equivalent of value, with bytes separated by spaces. + """ + hex_str = value.to_bytes(4, byteorder='little', signed=True) + return ' '.join(f'{byte:02x}' for byte in hex_str) + + +def _set_xdp_map(map_name, key, value): + """ + Updates an XDP map with a given key-value pair using bpftool. + + Args: + map_name: The name of the XDP map to update. + key: The key to update in the map, formatted as a hexadecimal string. + value: The value to associate with the key, formatted as a hexadecimal string. + """ + key_formatted = format_hex_bytes(key) + value_formatted = format_hex_bytes(value) + bpftool( + f"map update name {map_name} key hex {key_formatted} value hex {value_formatted}" + ) + + +def _get_stats(xdp_map_id): + """ + Retrieves and formats statistics from an XDP map. + + Args: + xdp_map_id: The ID of the XDP map from which to retrieve statistics. + + Returns: + A dictionary containing formatted packet statistics for various XDP actions. + The keys are based on the XDPStats Enum values. + + Raises: + KsftFailEx: If the stats retrieval fails. + """ + stats_dump = bpftool(f"map dump id {xdp_map_id}", json=True) + if not stats_dump: + raise KsftFailEx(f"Failed to get stats for map {xdp_map_id}") + + stats_formatted = {} + for key in range(0, 5): + val = stats_dump[key]["formatted"]["value"] + if stats_dump[key]["formatted"]["key"] == XDPStats.RX.value: + stats_formatted[XDPStats.RX.value] = val + elif stats_dump[key]["formatted"]["key"] == XDPStats.PASS.value: + stats_formatted[XDPStats.PASS.value] = val + elif stats_dump[key]["formatted"]["key"] == XDPStats.DROP.value: + stats_formatted[XDPStats.DROP.value] = val + elif stats_dump[key]["formatted"]["key"] == XDPStats.TX.value: + stats_formatted[XDPStats.TX.value] = val + elif stats_dump[key]["formatted"]["key"] == XDPStats.ABORT.value: + stats_formatted[XDPStats.ABORT.value] = val + + return stats_formatted + + +def _test_pass(cfg, bpf_info, msg_sz): + """ + Tests the XDP_PASS action by exchanging UDP packets. + + Args: + cfg: Configuration object containing network settings. + bpf_info: BPFProgInfo object containing information about the BPF program. + msg_sz: Size of the test message to send. + """ + + prog_info = _load_xdp_prog(cfg, bpf_info) + port = rand_port() + + _set_xdp_map("map_xdp_setup", TestConfig.MODE.value, XDPAction.PASS.value) + _set_xdp_map("map_xdp_setup", TestConfig.PORT.value, port) + + ksft_eq(_test_udp(cfg, port, msg_sz), True, "UDP packet exchange failed") + stats = _get_stats(prog_info["maps"]["map_xdp_stats"]) + + ksft_ne(stats[XDPStats.RX.value], 0, "RX stats should not be zero") + ksft_eq(stats[XDPStats.RX.value], stats[XDPStats.PASS.value], "RX and PASS stats mismatch") + + +def test_xdp_native_pass_sb(cfg): + """ + Tests the XDP_PASS action for single buffer case. + + Args: + cfg: Configuration object containing network settings. + """ + bpf_info = BPFProgInfo("xdp_prog", "xdp_native.bpf.o", "xdp", 1500) + + _test_pass(cfg, bpf_info, 256) + + +def test_xdp_native_pass_mb(cfg): + """ + Tests the XDP_PASS action for a multi-buff size. + + Args: + cfg: Configuration object containing network settings. + """ + bpf_info = BPFProgInfo("xdp_prog_frags", "xdp_native.bpf.o", "xdp.frags", 9000) + + _test_pass(cfg, bpf_info, 8000) + + +def _test_drop(cfg, bpf_info, msg_sz): + """ + Tests the XDP_DROP action by exchanging UDP packets. + + Args: + cfg: Configuration object containing network settings. + bpf_info: BPFProgInfo object containing information about the BPF program. + msg_sz: Size of the test message to send. + """ + + prog_info = _load_xdp_prog(cfg, bpf_info) + port = rand_port() + + _set_xdp_map("map_xdp_setup", TestConfig.MODE.value, XDPAction.DROP.value) + _set_xdp_map("map_xdp_setup", TestConfig.PORT.value, port) + + ksft_eq(_test_udp(cfg, port, msg_sz), False, "UDP packet exchange should fail") + stats = _get_stats(prog_info["maps"]["map_xdp_stats"]) + + ksft_ne(stats[XDPStats.RX.value], 0, "RX stats should be zero") + ksft_eq(stats[XDPStats.RX.value], stats[XDPStats.DROP.value], "RX and DROP stats mismatch") + + +def test_xdp_native_drop_sb(cfg): + """ + Tests the XDP_DROP action for a signle-buff case. + + Args: + cfg: Configuration object containing network settings. + """ + bpf_info = BPFProgInfo("xdp_prog", "xdp_native.bpf.o", "xdp", 1500) + + _test_drop(cfg, bpf_info, 256) + + +def test_xdp_native_drop_mb(cfg): + """ + Tests the XDP_DROP action for a multi-buff case. + + Args: + cfg: Configuration object containing network settings. + """ + bpf_info = BPFProgInfo("xdp_prog_frags", "xdp_native.bpf.o", "xdp.frags", 9000) + + _test_drop(cfg, bpf_info, 8000) + + +def _test_xdp_native_tx(cfg, bpf_info, payload_lens): + """ + Tests the XDP_TX action. + + Args: + cfg: Configuration object containing network settings. + bpf_info: BPFProgInfo object containing the BPF program metadata. + payload_lens: Array of packet lengths to send. + """ + cfg.require_cmd("socat", remote=True) + prog_info = _load_xdp_prog(cfg, bpf_info) + port = rand_port() + + _set_xdp_map("map_xdp_setup", TestConfig.MODE.value, XDPAction.TX.value) + _set_xdp_map("map_xdp_setup", TestConfig.PORT.value, port) + + expected_pkts = 0 + for payload_len in payload_lens: + test_string = "".join( + random.choice(string.ascii_lowercase) for _ in range(payload_len) + ) + + rx_udp = f"socat -{cfg.addr_ipver} -T 2 " + \ + f"-u UDP-RECV:{port},reuseport STDOUT" + + # Writing zero bytes to stdin gets ignored by socat, + # but with the shut-null flag socat generates a zero sized packet + # when the socket is closed. + tx_cmd_suffix = ",shut-null" if payload_len == 0 else "" + tx_udp = f"echo -n {test_string} | socat -t 2 " + \ + f"-u STDIN UDP:{cfg.baddr}:{port}{tx_cmd_suffix}" + + with bkg(rx_udp, host=cfg.remote, exit_wait=True) as rnc: + wait_port_listen(port, proto="udp", host=cfg.remote) + cmd(tx_udp, host=cfg.remote, shell=True) + + ksft_eq(rnc.stdout.strip(), test_string, "UDP packet exchange failed") + + expected_pkts += 1 + stats = _get_stats(prog_info["maps"]["map_xdp_stats"]) + ksft_eq(stats[XDPStats.RX.value], expected_pkts, "RX stats mismatch") + ksft_eq(stats[XDPStats.TX.value], expected_pkts, "TX stats mismatch") + + +def test_xdp_native_tx_sb(cfg): + """ + Tests the XDP_TX action for a single-buff case. + + Args: + cfg: Configuration object containing network settings. + """ + bpf_info = BPFProgInfo("xdp_prog", "xdp_native.bpf.o", "xdp", 1500) + + # Ensure there's enough room for an ETH / IP / UDP header + pkt_hdr_len = 42 if cfg.addr_ipver == "4" else 62 + + _test_xdp_native_tx(cfg, bpf_info, [0, 1500 // 2, 1500 - pkt_hdr_len]) + + +def test_xdp_native_tx_mb(cfg): + """ + Tests the XDP_TX action for a multi-buff case. + + Args: + cfg: Configuration object containing network settings. + """ + bpf_info = BPFProgInfo("xdp_prog_frags", "xdp_native.bpf.o", + "xdp.frags", 9000) + # The first packet ensures we exercise the fragmented code path. + # And the subsequent 0-sized packet ensures the driver + # reinitializes xdp_buff correctly. + _test_xdp_native_tx(cfg, bpf_info, [8000, 0]) + + +def _validate_res(res, offset_lst, pkt_sz_lst): + """ + Validates the result of a test. + + Args: + res: The result of the test, which should be a dictionary with a "status" key. + + Raises: + KsftFailEx: If the test fails to pass any combination of offset and packet size. + """ + if "status" not in res: + raise KsftFailEx("Missing 'status' key in result dictionary") + + # Validate that not a single case was successful + if res["status"] == "fail": + if res["offset"] == offset_lst[0] and res["pkt_sz"] == pkt_sz_lst[0]: + raise KsftFailEx(f"{res['reason']}") + + # Get the previous offset and packet size to report the successful run + tmp_idx = offset_lst.index(res["offset"]) + prev_offset = offset_lst[tmp_idx - 1] + if tmp_idx == 0: + tmp_idx = pkt_sz_lst.index(res["pkt_sz"]) + prev_pkt_sz = pkt_sz_lst[tmp_idx - 1] + else: + prev_pkt_sz = res["pkt_sz"] + + # Use these values for error reporting + ksft_pr( + f"Failed run: pkt_sz {res['pkt_sz']}, offset {res['offset']}. " + f"Last successful run: pkt_sz {prev_pkt_sz}, offset {prev_offset}. " + f"Reason: {res['reason']}" + ) + + +def _check_for_failures(recvd_str, stats): + """ + Checks for common failures while adjusting headroom or tailroom. + + Args: + recvd_str: The string received from the remote host after sending a test string. + stats: A dictionary containing formatted packet statistics for various XDP actions. + + Returns: + str: A string describing the failure reason if a failure is detected, otherwise None. + """ + + # Any adjustment failure result in an abort hence, we track this counter + if stats[XDPStats.ABORT.value] != 0: + return "Adjustment failed" + + # Since we are using aggregate stats for a single test across all offsets and packet sizes + # we can't use RX stats only to track data exchange failure without taking a previous + # snapshot. An easier way is to simply check for non-zero length of received string. + if len(recvd_str) == 0: + return "Data exchange failed" + + # Check for RX and PASS stats mismatch. Ideally, they should be equal for a successful run + if stats[XDPStats.RX.value] != stats[XDPStats.PASS.value]: + return "RX stats mismatch" + + return None + + +def _test_xdp_native_tail_adjst(cfg, pkt_sz_lst, offset_lst): + """ + Tests the XDP tail adjustment functionality. + + This function loads the appropriate XDP program based on the provided + program name and configures the XDP map for tail adjustment. It then + validates the tail adjustment by sending and receiving UDP packets + with specified packet sizes and offsets. + + Args: + cfg: Configuration object containing network settings. + prog: Name of the XDP program to load. + pkt_sz_lst: List of packet sizes to test. + offset_lst: List of offsets to validate support for tail adjustment. + + Returns: + dict: A dictionary with test status and failure details if applicable. + """ + port = rand_port() + bpf_info = BPFProgInfo("xdp_prog_frags", "xdp_native.bpf.o", "xdp.frags", 9000) + + prog_info = _load_xdp_prog(cfg, bpf_info) + + # Configure the XDP map for tail adjustment + _set_xdp_map("map_xdp_setup", TestConfig.MODE.value, XDPAction.TAIL_ADJST.value) + _set_xdp_map("map_xdp_setup", TestConfig.PORT.value, port) + + for offset in offset_lst: + tag = format(random.randint(65, 90), "02x") + + _set_xdp_map("map_xdp_setup", TestConfig.ADJST_OFFSET.value, offset) + if offset > 0: + _set_xdp_map("map_xdp_setup", TestConfig.ADJST_TAG.value, int(tag, 16)) + + for pkt_sz in pkt_sz_lst: + test_str = "".join(random.choice(string.ascii_lowercase) for _ in range(pkt_sz)) + recvd_str = _exchg_udp(cfg, port, test_str) + stats = _get_stats(prog_info["maps"]["map_xdp_stats"]) + + failure = _check_for_failures(recvd_str, stats) + if failure is not None: + return { + "status": "fail", + "reason": failure, + "offset": offset, + "pkt_sz": pkt_sz, + } + + # Validate data content based on offset direction + expected_data = None + if offset > 0: + expected_data = test_str + (offset * chr(int(tag, 16))) + else: + expected_data = test_str[0:pkt_sz + offset] + + if recvd_str != expected_data: + return { + "status": "fail", + "reason": "Data mismatch", + "offset": offset, + "pkt_sz": pkt_sz, + } + + return {"status": "pass"} + + +def test_xdp_native_adjst_tail_grow_data(cfg): + """ + Tests the XDP tail adjustment by growing packet data. + + Args: + cfg: Configuration object containing network settings. + """ + pkt_sz_lst = [512, 1024, 2048] + offset_lst = [1, 16, 32, 64, 128, 256] + res = _test_xdp_native_tail_adjst( + cfg, + pkt_sz_lst, + offset_lst, + ) + + _validate_res(res, offset_lst, pkt_sz_lst) + + +def test_xdp_native_adjst_tail_shrnk_data(cfg): + """ + Tests the XDP tail adjustment by shrinking packet data. + + Args: + cfg: Configuration object containing network settings. + """ + pkt_sz_lst = [512, 1024, 2048] + offset_lst = [-16, -32, -64, -128, -256] + res = _test_xdp_native_tail_adjst( + cfg, + pkt_sz_lst, + offset_lst, + ) + + _validate_res(res, offset_lst, pkt_sz_lst) + + +def get_hds_thresh(cfg): + """ + Retrieves the header data split (HDS) threshold for a network interface. + + Args: + cfg: Configuration object containing network settings. + + Returns: + The HDS threshold value. If the threshold is not supported or an error occurs, + a default value of 1500 is returned. + """ + ethnl = cfg.ethnl + hds_thresh = 1500 + + try: + rings = ethnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + if 'hds-thresh' not in rings: + ksft_pr(f'hds-thresh not supported. Using default: {hds_thresh}') + return hds_thresh + hds_thresh = rings['hds-thresh'] + except NlError as e: + ksft_pr(f"Failed to get rings: {e}. Using default: {hds_thresh}") + + return hds_thresh + + +def _test_xdp_native_head_adjst(cfg, prog, pkt_sz_lst, offset_lst): + """ + Tests the XDP head adjustment action for a multi-buffer case. + + Args: + cfg: Configuration object containing network settings. + ethnl: Network namespace or link object (not used in this function). + + This function sets up the packet size and offset lists, then performs + the head adjustment test by sending and receiving UDP packets. + """ + cfg.require_cmd("socat", remote=True) + + prog_info = _load_xdp_prog(cfg, BPFProgInfo(prog, "xdp_native.bpf.o", "xdp.frags", 9000)) + port = rand_port() + + _set_xdp_map("map_xdp_setup", TestConfig.MODE.value, XDPAction.HEAD_ADJST.value) + _set_xdp_map("map_xdp_setup", TestConfig.PORT.value, port) + + hds_thresh = get_hds_thresh(cfg) + for offset in offset_lst: + for pkt_sz in pkt_sz_lst: + # The "head" buffer must contain at least the Ethernet header + # after we eat into it. We send large-enough packets, but if HDS + # is enabled head will only contain headers. Don't try to eat + # more than 28 bytes (UDPv4 + eth hdr left: (14 + 20 + 8) - 14) + l2_cut_off = 28 if cfg.addr_ipver == 4 else 48 + if pkt_sz > hds_thresh and offset > l2_cut_off: + ksft_pr( + f"Failed run: pkt_sz ({pkt_sz}) > HDS threshold ({hds_thresh}) and " + f"offset {offset} > {l2_cut_off}" + ) + return {"status": "pass"} + + test_str = ''.join(random.choice(string.ascii_lowercase) for _ in range(pkt_sz)) + tag = format(random.randint(65, 90), '02x') + + _set_xdp_map("map_xdp_setup", + TestConfig.ADJST_OFFSET.value, + offset) + _set_xdp_map("map_xdp_setup", TestConfig.ADJST_TAG.value, int(tag, 16)) + _set_xdp_map("map_xdp_setup", TestConfig.ADJST_OFFSET.value, offset) + + recvd_str = _exchg_udp(cfg, port, test_str) + + # Check for failures around adjustment and data exchange + failure = _check_for_failures(recvd_str, _get_stats(prog_info['maps']['map_xdp_stats'])) + if failure is not None: + return { + "status": "fail", + "reason": failure, + "offset": offset, + "pkt_sz": pkt_sz + } + + # Validate data content based on offset direction + expected_data = None + if offset < 0: + expected_data = chr(int(tag, 16)) * (0 - offset) + test_str + else: + expected_data = test_str[offset:] + + if recvd_str != expected_data: + return { + "status": "fail", + "reason": "Data mismatch", + "offset": offset, + "pkt_sz": pkt_sz + } + + return {"status": "pass"} + + +def test_xdp_native_adjst_head_grow_data(cfg): + """ + Tests the XDP headroom growth support. + + Args: + cfg: Configuration object containing network settings. + + This function sets up the packet size and offset lists, then calls the + _test_xdp_native_head_adjst_mb function to perform the actual test. The + test is passed if the headroom is successfully extended for given packet + sizes and offsets. + """ + pkt_sz_lst = [512, 1024, 2048] + + # Negative values result in headroom shrinking, resulting in growing of payload + offset_lst = [-16, -32, -64, -128, -256] + res = _test_xdp_native_head_adjst(cfg, "xdp_prog_frags", pkt_sz_lst, offset_lst) + + _validate_res(res, offset_lst, pkt_sz_lst) + + +def test_xdp_native_adjst_head_shrnk_data(cfg): + """ + Tests the XDP headroom shrinking support. + + Args: + cfg: Configuration object containing network settings. + + This function sets up the packet size and offset lists, then calls the + _test_xdp_native_head_adjst_mb function to perform the actual test. The + test is passed if the headroom is successfully shrunk for given packet + sizes and offsets. + """ + pkt_sz_lst = [512, 1024, 2048] + + # Positive values result in headroom growing, resulting in shrinking of payload + offset_lst = [16, 32, 64, 128, 256] + res = _test_xdp_native_head_adjst(cfg, "xdp_prog_frags", pkt_sz_lst, offset_lst) + + _validate_res(res, offset_lst, pkt_sz_lst) + + +@ksft_variants([ + KsftNamedVariant("pass", XDPAction.PASS), + KsftNamedVariant("drop", XDPAction.DROP), + KsftNamedVariant("tx", XDPAction.TX), +]) +def test_xdp_native_qstats(cfg, act): + """ + Send 1000 messages. Expect XDP action specified in @act. + Make sure the packets were counted to interface level qstats + (Rx, and Tx if act is TX). + """ + + cfg.require_cmd("socat") + + bpf_info = BPFProgInfo("xdp_prog", "xdp_native.bpf.o", "xdp", 1500) + prog_info = _load_xdp_prog(cfg, bpf_info) + port = rand_port() + + _set_xdp_map("map_xdp_setup", TestConfig.MODE.value, act.value) + _set_xdp_map("map_xdp_setup", TestConfig.PORT.value, port) + + # Discard the input, but we need a listener to avoid ICMP errors + rx_udp = f"socat -{cfg.addr_ipver} -T 2 -u UDP-RECV:{port},reuseport " + \ + "/dev/null" + # Listener runs on "remote" in case of XDP_TX + rx_host = cfg.remote if act == XDPAction.TX else None + # We want to spew 1000 packets quickly, bash seems to do a good enough job + # Each reopening of the socket gives us a differenot local port (for RSS) + tx_udp = "for _ in `seq 20`; do " \ + f"exec 5<>/dev/udp/{cfg.addr}/{port}; " \ + "for i in `seq 50`; do echo a >&5; done; " \ + "exec 5>&-; done" + + cfg.wait_hw_stats_settle() + # Qstats have more clearly defined semantics than rtnetlink. + # XDP is the "first layer of the stack" so XDP packets should be counted + # as received and sent as if the decision was made in the routing layer. + before = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + + with bkg(rx_udp, host=rx_host, exit_wait=True): + wait_port_listen(port, proto="udp", host=rx_host) + cmd(tx_udp, host=cfg.remote, shell=True) + + cfg.wait_hw_stats_settle() + after = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + + expected_pkts = 1000 + ksft_ge(after['rx-packets'] - before['rx-packets'], expected_pkts) + if act == XDPAction.TX: + ksft_ge(after['tx-packets'] - before['tx-packets'], expected_pkts) + + stats = _get_stats(prog_info["maps"]["map_xdp_stats"]) + ksft_eq(stats[XDPStats.RX.value], expected_pkts, "XDP RX stats mismatch") + if act == XDPAction.TX: + ksft_eq(stats[XDPStats.TX.value], expected_pkts, "XDP TX stats mismatch") + + # Flip the ring count back and forth to make sure the stats from XDP rings + # don't get lost. + chans = cfg.ethnl.channels_get({'header': {'dev-index': cfg.ifindex}}) + if chans.get('combined-count', 0) > 1: + cfg.ethnl.channels_set({'header': {'dev-index': cfg.ifindex}, + 'combined-count': 1}) + cfg.ethnl.channels_set({'header': {'dev-index': cfg.ifindex}, + 'combined-count': chans['combined-count']}) + before = after + after = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + + ksft_ge(after['rx-packets'], before['rx-packets']) + if act == XDPAction.TX: + ksft_ge(after['tx-packets'], before['tx-packets']) + + +def main(): + """ + Main function to execute the XDP tests. + + This function runs a series of tests to validate the XDP support for + both the single and multi-buffer. It uses the NetDrvEpEnv context + manager to manage the network driver environment and the ksft_run + function to execute the tests. + """ + with NetDrvEpEnv(__file__) as cfg: + cfg.ethnl = EthtoolFamily() + cfg.netnl = NetdevFamily() + ksft_run( + [ + test_xdp_native_pass_sb, + test_xdp_native_pass_mb, + test_xdp_native_drop_sb, + test_xdp_native_drop_mb, + test_xdp_native_tx_sb, + test_xdp_native_tx_mb, + test_xdp_native_adjst_tail_grow_data, + test_xdp_native_adjst_tail_shrnk_data, + test_xdp_native_adjst_head_grow_data, + test_xdp_native_adjst_head_shrnk_data, + test_xdp_native_qstats, + ], + args=(cfg,)) + ksft_exit() + + +if __name__ == "__main__": + main() |