#!/bin/bash # SPDX-License-Identifier: GPL-2.0 # # Test devlink-trap tunnel drops and exceptions functionality over mlxsw. # Check all traps to make sure they are triggered under the right # conditions. # +--------------------+ # | H1 (vrf) | # | + $h1 | # | | 192.0.2.1/28 | # +----|---------------+ # | # +----|----------------------------------------------------------------------+ # | SW | | # | +--|--------------------------------------------------------------------+ | # | | + $swp1 BR1 (802.1d) | | # | | | | # | | + vx1 (vxlan) | | # | | local 192.0.2.17 | | # | | id 1000 dstport $VXPORT | | # | +-----------------------------------------------------------------------+ | # | | # | + $rp1 | # | | 192.0.2.17/28 | # +----|----------------------------------------------------------------------+ # | # +----|--------------------------------------------------------+ # | | VRF2 | # | + $rp2 | # | 192.0.2.18/28 | # | | # +-------------------------------------------------------------+ lib_dir=$(dirname $0)/../../../net/forwarding ALL_TESTS=" decap_error_test overlay_smac_is_mc_test " NUM_NETIFS=4 source $lib_dir/lib.sh source $lib_dir/tc_common.sh source $lib_dir/devlink_lib.sh : ${VXPORT:=4789} export VXPORT h1_create() { simple_if_init $h1 192.0.2.1/28 } h1_destroy() { simple_if_fini $h1 192.0.2.1/28 } switch_create() { ip link add name br1 type bridge vlan_filtering 0 mcast_snooping 0 # Make sure the bridge uses the MAC address of the local port and not # that of the VxLAN's device. ip link set dev br1 address $(mac_get $swp1) ip link set dev br1 up tc qdisc add dev $swp1 clsact ip link set dev $swp1 master br1 ip link set dev $swp1 up ip link add name vx1 type vxlan id 1000 local 192.0.2.17 \ dstport "$VXPORT" nolearning noudpcsum tos inherit ttl 100 ip link set dev vx1 master br1 ip link set dev vx1 up ip address add dev $rp1 192.0.2.17/28 ip link set dev $rp1 up } switch_destroy() { ip link set dev $rp1 down ip address del dev $rp1 192.0.2.17/28 ip link set dev vx1 down ip link set dev vx1 nomaster ip link del dev vx1 ip link set dev $swp1 down ip link set dev $swp1 nomaster tc qdisc del dev $swp1 clsact ip link set dev br1 down ip link del dev br1 } vrf2_create() { simple_if_init $rp2 192.0.2.18/28 } vrf2_destroy() { simple_if_fini $rp2 192.0.2.18/28 } setup_prepare() { h1=${NETIFS[p1]} swp1=${NETIFS[p2]} rp1=${NETIFS[p3]} rp2=${NETIFS[p4]} vrf_prepare forwarding_enable h1_create switch_create vrf2_create } cleanup() { pre_cleanup vrf2_destroy switch_destroy h1_destroy forwarding_restore vrf_cleanup } ecn_payload_get() { dest_mac=$(mac_get $h1) p=$(: )"08:"$( : VXLAN flags )"00:00:00:"$( : VXLAN reserved )"00:03:e8:"$( : VXLAN VNI : 1000 )"00:"$( : VXLAN reserved )"$dest_mac:"$( : ETH daddr )"00:00:00:00:00:00:"$( : ETH saddr )"08:00:"$( : ETH type )"45:"$( : IP version + IHL )"00:"$( : IP TOS )"00:14:"$( : IP total length )"00:00:"$( : IP identification )"20:00:"$( : IP flags + frag off )"40:"$( : IP TTL )"00:"$( : IP proto )"D6:E5:"$( : IP header csum )"c0:00:02:03:"$( : IP saddr: 192.0.2.3 )"c0:00:02:01:"$( : IP daddr: 192.0.2.1 ) echo $p } ecn_decap_test() { local trap_name="decap_error" local desc=$1; shift local ecn_desc=$1; shift local outer_tos=$1; shift local mz_pid RET=0 tc filter add dev $swp1 egress protocol ip pref 1 handle 101 \ flower src_ip 192.0.2.3 dst_ip 192.0.2.1 action pass rp1_mac=$(mac_get $rp1) payload=$(ecn_payload_get) ip vrf exec v$rp2 $MZ $rp2 -c 0 -d 1msec -b $rp1_mac -B 192.0.2.17 \ -t udp sp=12345,dp=$VXPORT,tos=$outer_tos,p=$payload -q & mz_pid=$! devlink_trap_exception_test $trap_name tc_check_packets "dev $swp1 egress" 101 0 check_err $? "Packets were not dropped" log_test "$desc: Inner ECN is not ECT and outer is $ecn_desc" kill $mz_pid && wait $mz_pid &> /dev/null tc filter del dev $swp1 egress protocol ip pref 1 handle 101 flower } reserved_bits_payload_get() { dest_mac=$(mac_get $h1) p=$(: )"08:"$( : VXLAN flags )"01:00:00:"$( : VXLAN reserved )"00:03:e8:"$( : VXLAN VNI : 1000 )"00:"$( : VXLAN reserved )"$dest_mac:"$( : ETH daddr )"00:00:00:00:00:00:"$( : ETH saddr )"08:00:"$( : ETH type )"45:"$( : IP version + IHL )"00:"$( : IP TOS )"00:14:"$( : IP total length )"00:00:"$( : IP identification )"20:00:"$( : IP flags + frag off )"40:"$( : IP TTL )"00:"$( : IP proto )"00:00:"$( : IP header csum )"c0:00:02:03:"$( : IP saddr: 192.0.2.3 )"c0:00:02:01:"$( : IP daddr: 192.0.2.1 ) echo $p } short_payload_get() { dest_mac=$(mac_get $h1) p=$(: )"08:"$( : VXLAN flags )"01:00:00:"$( : VXLAN reserved )"00:03:e8:"$( : VXLAN VNI : 1000 )"00:"$( : VXLAN reserved ) echo $p } corrupted_packet_test() { local trap_name="decap_error" local desc=$1; shift local payload_get=$1; shift local mz_pid RET=0 # In case of too short packet, there is no any inner packet, # so the matching will always succeed tc filter add dev $swp1 egress protocol ip pref 1 handle 101 \ flower skip_hw src_ip 192.0.2.3 dst_ip 192.0.2.1 action pass rp1_mac=$(mac_get $rp1) payload=$($payload_get) ip vrf exec v$rp2 $MZ $rp2 -c 0 -d 1msec -b $rp1_mac \ -B 192.0.2.17 -t udp sp=12345,dp=$VXPORT,p=$payload -q & mz_pid=$! devlink_trap_exception_test $trap_name tc_check_packets "dev $swp1 egress" 101 0 check_err $? "Packets were not dropped" log_test "$desc" kill $mz_pid && wait $mz_pid &> /dev/null tc filter del dev $swp1 egress protocol ip pref 1 handle 101 flower } decap_error_test() { ecn_decap_test "Decap error" "ECT(1)" 01 ecn_decap_test "Decap error" "ECT(0)" 02 ecn_decap_test "Decap error" "CE" 03 corrupted_packet_test "Decap error: Reserved bits in use" \ "reserved_bits_payload_get" corrupted_packet_test "Decap error: No L2 header" "short_payload_get" } mc_smac_payload_get() { dest_mac=$(mac_get $h1) source_mac=01:02:03:04:05:06 p=$(: )"08:"$( : VXLAN flags )"00:00:00:"$( : VXLAN reserved )"00:03:e8:"$( : VXLAN VNI : 1000 )"00:"$( : VXLAN reserved )"$dest_mac:"$( : ETH daddr )"$source_mac:"$( : ETH saddr )"08:00:"$( : ETH type )"45:"$( : IP version + IHL )"00:"$( : IP TOS )"00:14:"$( : IP total length )"00:00:"$( : IP identification )"20:00:"$( : IP flags + frag off )"40:"$( : IP TTL )"00:"$( : IP proto )"00:00:"$( : IP header csum )"c0:00:02:03:"$( : IP saddr: 192.0.2.3 )"c0:00:02:01:"$( : IP daddr: 192.0.2.1 ) echo $p } overlay_smac_is_mc_test() { local trap_name="overlay_smac_is_mc" local mz_pid RET=0 # The matching will be checked on devlink_trap_drop_test() # and the filter will be removed on devlink_trap_drop_cleanup() tc filter add dev $swp1 egress protocol ip pref 1 handle 101 \ flower src_mac 01:02:03:04:05:06 action pass rp1_mac=$(mac_get $rp1) payload=$(mc_smac_payload_get) ip vrf exec v$rp2 $MZ $rp2 -c 0 -d 1msec -b $rp1_mac \ -B 192.0.2.17 -t udp sp=12345,dp=$VXPORT,p=$payload -q & mz_pid=$! devlink_trap_drop_test $trap_name $swp1 101 log_test "Overlay source MAC is multicast" devlink_trap_drop_cleanup $mz_pid $swp1 "ip" 1 101 } trap cleanup EXIT setup_prepare setup_wait tests_run exit $EXIT_STATUS