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-rwxr-xr-xtools/testing/selftests/bpf/test_tc_tunnel.sh136
1 files changed, 111 insertions, 25 deletions
diff --git a/tools/testing/selftests/bpf/test_tc_tunnel.sh b/tools/testing/selftests/bpf/test_tc_tunnel.sh
index c805adb88f3a..d4d8d5d3b06e 100755
--- a/tools/testing/selftests/bpf/test_tc_tunnel.sh
+++ b/tools/testing/selftests/bpf/test_tc_tunnel.sh
@@ -15,6 +15,12 @@ readonly ns2_v4=192.168.1.2
readonly ns1_v6=fd::1
readonly ns2_v6=fd::2
+# Must match port used by bpf program
+readonly udpport=5555
+# MPLSoverUDP
+readonly mplsudpport=6635
+readonly mplsproto=137
+
readonly infile="$(mktemp)"
readonly outfile="$(mktemp)"
@@ -38,8 +44,8 @@ setup() {
# clamp route to reserve room for tunnel headers
ip -netns "${ns1}" -4 route flush table main
ip -netns "${ns1}" -6 route flush table main
- ip -netns "${ns1}" -4 route add "${ns2_v4}" mtu 1476 dev veth1
- ip -netns "${ns1}" -6 route add "${ns2_v6}" mtu 1456 dev veth1
+ ip -netns "${ns1}" -4 route add "${ns2_v4}" mtu 1458 dev veth1
+ ip -netns "${ns1}" -6 route add "${ns2_v6}" mtu 1438 dev veth1
sleep 1
@@ -86,30 +92,44 @@ set -e
# no arguments: automated test, run all
if [[ "$#" -eq "0" ]]; then
echo "ipip"
- $0 ipv4 ipip 100
+ $0 ipv4 ipip none 100
echo "ip6ip6"
- $0 ipv6 ip6tnl 100
+ $0 ipv6 ip6tnl none 100
+
+ for mac in none mpls eth ; do
+ echo "ip gre $mac"
+ $0 ipv4 gre $mac 100
+
+ echo "ip6 gre $mac"
+ $0 ipv6 ip6gre $mac 100
+
+ echo "ip gre $mac gso"
+ $0 ipv4 gre $mac 2000
- echo "ip gre"
- $0 ipv4 gre 100
+ echo "ip6 gre $mac gso"
+ $0 ipv6 ip6gre $mac 2000
- echo "ip6 gre"
- $0 ipv6 ip6gre 100
+ echo "ip udp $mac"
+ $0 ipv4 udp $mac 100
- echo "ip gre gso"
- $0 ipv4 gre 2000
+ echo "ip6 udp $mac"
+ $0 ipv6 ip6udp $mac 100
- echo "ip6 gre gso"
- $0 ipv6 ip6gre 2000
+ echo "ip udp $mac gso"
+ $0 ipv4 udp $mac 2000
+
+ echo "ip6 udp $mac gso"
+ $0 ipv6 ip6udp $mac 2000
+ done
echo "OK. All tests passed"
exit 0
fi
-if [[ "$#" -ne "3" ]]; then
+if [[ "$#" -ne "4" ]]; then
echo "Usage: $0"
- echo " or: $0 <ipv4|ipv6> <tuntype> <data_len>"
+ echo " or: $0 <ipv4|ipv6> <tuntype> <none|mpls|eth> <data_len>"
exit 1
fi
@@ -117,12 +137,24 @@ case "$1" in
"ipv4")
readonly addr1="${ns1_v4}"
readonly addr2="${ns2_v4}"
- readonly netcat_opt=-4
+ readonly ipproto=4
+ readonly netcat_opt=-${ipproto}
+ readonly foumod=fou
+ readonly foutype=ipip
+ readonly fouproto=4
+ readonly fouproto_mpls=${mplsproto}
+ readonly gretaptype=gretap
;;
"ipv6")
readonly addr1="${ns1_v6}"
readonly addr2="${ns2_v6}"
- readonly netcat_opt=-6
+ readonly ipproto=6
+ readonly netcat_opt=-${ipproto}
+ readonly foumod=fou6
+ readonly foutype=ip6tnl
+ readonly fouproto="41 -6"
+ readonly fouproto_mpls="${mplsproto} -6"
+ readonly gretaptype=ip6gretap
;;
*)
echo "unknown arg: $1"
@@ -131,9 +163,10 @@ case "$1" in
esac
readonly tuntype=$2
-readonly datalen=$3
+readonly mac=$3
+readonly datalen=$4
-echo "encap ${addr1} to ${addr2}, type ${tuntype}, len ${datalen}"
+echo "encap ${addr1} to ${addr2}, type ${tuntype}, mac ${mac} len ${datalen}"
trap cleanup EXIT
@@ -150,16 +183,63 @@ verify_data
ip netns exec "${ns1}" tc qdisc add dev veth1 clsact
ip netns exec "${ns1}" tc filter add dev veth1 egress \
bpf direct-action object-file ./test_tc_tunnel.o \
- section "encap_${tuntype}"
+ section "encap_${tuntype}_${mac}"
echo "test bpf encap without decap (expect failure)"
server_listen
! client_connect
+if [[ "$tuntype" =~ "udp" ]]; then
+ # Set up fou tunnel.
+ ttype="${foutype}"
+ targs="encap fou encap-sport auto encap-dport $udpport"
+ # fou may be a module; allow this to fail.
+ modprobe "${foumod}" ||true
+ if [[ "$mac" == "mpls" ]]; then
+ dport=${mplsudpport}
+ dproto=${fouproto_mpls}
+ tmode="mode any ttl 255"
+ else
+ dport=${udpport}
+ dproto=${fouproto}
+ fi
+ ip netns exec "${ns2}" ip fou add port $dport ipproto ${dproto}
+ targs="encap fou encap-sport auto encap-dport $dport"
+elif [[ "$tuntype" =~ "gre" && "$mac" == "eth" ]]; then
+ ttype=$gretaptype
+else
+ ttype=$tuntype
+ targs=""
+fi
+
# serverside, insert decap module
# server is still running
# client can connect again
-ip netns exec "${ns2}" ip link add dev testtun0 type "${tuntype}" \
- remote "${addr1}" local "${addr2}"
+ip netns exec "${ns2}" ip link add name testtun0 type "${ttype}" \
+ ${tmode} remote "${addr1}" local "${addr2}" $targs
+
+expect_tun_fail=0
+
+if [[ "$tuntype" == "ip6udp" && "$mac" == "mpls" ]]; then
+ # No support for MPLS IPv6 fou tunnel; expect failure.
+ expect_tun_fail=1
+elif [[ "$tuntype" =~ "udp" && "$mac" == "eth" ]]; then
+ # No support for TEB fou tunnel; expect failure.
+ expect_tun_fail=1
+elif [[ "$tuntype" =~ "gre" && "$mac" == "eth" ]]; then
+ # Share ethernet address between tunnel/veth2 so L2 decap works.
+ ethaddr=$(ip netns exec "${ns2}" ip link show veth2 | \
+ awk '/ether/ { print $2 }')
+ ip netns exec "${ns2}" ip link set testtun0 address $ethaddr
+elif [[ "$mac" == "mpls" ]]; then
+ modprobe mpls_iptunnel ||true
+ modprobe mpls_gso ||true
+ ip netns exec "${ns2}" sysctl -qw net.mpls.platform_labels=65536
+ ip netns exec "${ns2}" ip -f mpls route add 1000 dev lo
+ ip netns exec "${ns2}" ip link set lo up
+ ip netns exec "${ns2}" sysctl -qw net.mpls.conf.testtun0.input=1
+ ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.lo.rp_filter=0
+fi
+
# Because packets are decapped by the tunnel they arrive on testtun0 from
# the IP stack perspective. Ensure reverse path filtering is disabled
# otherwise we drop the TCP SYN as arriving on testtun0 instead of the
@@ -169,16 +249,22 @@ ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.all.rp_filter=0
# selected as the max of the "all" and device-specific values.
ip netns exec "${ns2}" sysctl -qw net.ipv4.conf.testtun0.rp_filter=0
ip netns exec "${ns2}" ip link set dev testtun0 up
-echo "test bpf encap with tunnel device decap"
-client_connect
-verify_data
+if [[ "$expect_tun_fail" == 1 ]]; then
+ # This tunnel mode is not supported, so we expect failure.
+ echo "test bpf encap with tunnel device decap (expect failure)"
+ ! client_connect
+else
+ echo "test bpf encap with tunnel device decap"
+ client_connect
+ verify_data
+ server_listen
+fi
# serverside, use BPF for decap
ip netns exec "${ns2}" ip link del dev testtun0
ip netns exec "${ns2}" tc qdisc add dev veth2 clsact
ip netns exec "${ns2}" tc filter add dev veth2 ingress \
bpf direct-action object-file ./test_tc_tunnel.o section decap
-server_listen
echo "test bpf encap with bpf decap"
client_connect
verify_data