tools/testing/selftests/bpf/test_skb_cgroup_id.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2018 Facebook
   4
   5 set -eu
   6
   7 wait_for_ip()
   8 {
   9         local _i
  10         echo -n "Wait for testing link-local IP to become available "
  11         for _i in $(seq ${MAX_PING_TRIES}); do
  12                 echo -n "."
  13                 if $PING6 -c 1 -W 1 ff02::1%${TEST_IF} >/dev/null 2>&1; then
  14                         echo " OK"
  15                         return
  16                 fi
  17                 sleep 1
  18         done
  19         echo 1>&2 "ERROR: Timeout waiting for test IP to become available."
  20         exit 1
  21 }
  22
  23 setup()
  24 {
  25         # Create testing interfaces not to interfere with current environment.
  26         ip link add dev ${TEST_IF} type veth peer name ${TEST_IF_PEER}
  27         ip link set ${TEST_IF} up
  28         ip link set ${TEST_IF_PEER} up
  29
  30         wait_for_ip
  31
  32         tc qdisc add dev ${TEST_IF} clsact
  33         tc filter add dev ${TEST_IF} egress bpf obj ${BPF_PROG_OBJ} \
  34                 sec ${BPF_PROG_SECTION} da
  35
  36         BPF_PROG_ID=$(tc filter show dev ${TEST_IF} egress | \
  37                         awk '/ id / {sub(/.* id /, "", $0); print($1)}')
  38 }
  39
  40 cleanup()
  41 {
  42         ip link del ${TEST_IF} 2>/dev/null || :
  43         ip link del ${TEST_IF_PEER} 2>/dev/null || :
  44 }
  45
  46 main()
  47 {
  48         trap cleanup EXIT 2 3 6 15
  49         setup
  50         ${PROG} ${TEST_IF} ${BPF_PROG_ID}
  51 }
  52
  53 DIR=$(dirname $0)
  54 TEST_IF="test_cgid_1"
  55 TEST_IF_PEER="test_cgid_2"
  56 MAX_PING_TRIES=5
  57 BPF_PROG_OBJ="${DIR}/test_skb_cgroup_id_kern.o"
  58 BPF_PROG_SECTION="cgroup_id_logger"
  59 BPF_PROG_ID=0
  60 PROG="${DIR}/test_skb_cgroup_id_user"
  61 type ping6 >/dev/null 2>&1 && PING6="ping6" || PING6="ping -6"
  62
  63 main