tools/testing/selftests/net/test_ingress_egress_chaining.sh

   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