1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3
4 # This test runs a simple ingress tc setup between two veth pairs,
5 # and chains a single egress rule to test ingress chaining to egress.
6 #
7 # Kselftest framework requirement - SKIP code is 4.
8 ksft_skip=4
9
10 if [ "$(id -u)" -ne 0 ];then
11 echo "SKIP: Need root privileges"
12 exit $ksft_skip
13 fi
14
15 needed_mods="act_mirred cls_flower sch_ingress"
16 for mod in $needed_mods; do
17 modinfo $mod &>/dev/null || { echo "SKIP: Need act_mirred module"; exit $ksft_skip; }
18 done
19
20 ns="ns$((RANDOM%899+100))"
21 veth1="veth1$((RANDOM%899+100))"
22 veth2="veth2$((RANDOM%899+100))"
23 peer1="peer1$((RANDOM%899+100))"
24 peer2="peer2$((RANDOM%899+100))"
25 ip_peer1=198.51.100.5
26 ip_peer2=198.51.100.6
27
28 function fail() {
29 echo "FAIL: $@" >> /dev/stderr
30 exit 1
31 }
32
33 function cleanup() {
34 killall -q -9 udpgso_bench_rx
35 ip link del $veth1 &> /dev/null
36 ip link del $veth2 &> /dev/null
37 ip netns del $ns &> /dev/null
38 }
39 trap cleanup EXIT
40
41 function config() {
42 echo "Setup veth pairs [$veth1, $peer1], and veth pair [$veth2, $peer2]"
43 ip link add $veth1 type veth peer name $peer1
44 ip link add $veth2 type veth peer name $peer2
45 ip addr add $ip_peer1/24 dev $peer1
46 ip link set $peer1 up
47 ip netns add $ns
48 ip link set dev $peer2 netns $ns
49 ip netns exec $ns ip addr add $ip_peer2/24 dev $peer2
50 ip netns exec $ns ip link set $peer2 up
51 ip link set $veth1 up
52 ip link set $veth2 up
53
54 echo "Add tc filter ingress->egress forwarding $veth1 <-> $veth2"
55 tc qdisc add dev $veth2 ingress
56 tc qdisc add dev $veth1 ingress
57 tc filter add dev $veth2 ingress prio 1 proto all flower \
58 action mirred egress redirect dev $veth1
59 tc filter add dev $veth1 ingress prio 1 proto all flower \
60 action mirred egress redirect dev $veth2
61
62 echo "Add tc filter egress->ingress forwarding $peer1 -> $veth1, bypassing the veth pipe"
63 tc qdisc add dev $peer1 clsact
64 tc filter add dev $peer1 egress prio 20 proto ip flower \
65 action mirred ingress redirect dev $veth1
66 }
67
68 function test_run() {
69 echo "Run tcp traffic"
70 ./udpgso_bench_rx -t &
71 sleep 1
72 ip netns exec $ns timeout -k 2 10 ./udpgso_bench_tx -t -l 2 -4 -D $ip_peer1 || fail "traffic failed"
73 echo "Test passed"
74 }
75
76 config
77 test_run
78 trap - EXIT
79 cleanup
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