tools/testing/selftests/net/tcp_fastopen_backup_key.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # rotate TFO keys for ipv4/ipv6 and verify that the client does
   5 # not present an invalid cookie.
   6
   7 set +x
   8 set -e
   9
  10 readonly NETNS="ns-$(mktemp -u XXXXXX)"
  11
  12 setup() {
  13         ip netns add "${NETNS}"
  14         ip -netns "${NETNS}" link set lo up
  15         ip netns exec "${NETNS}" sysctl -w net.ipv4.tcp_fastopen=3 \
  16                 >/dev/null 2>&1
  17 }
  18
  19 cleanup() {
  20         ip netns del "${NETNS}"
  21 }
  22
  23 trap cleanup EXIT
  24 setup
  25
  26 do_test() {
  27         # flush routes before each run, otherwise successive runs can
  28         # initially present an old TFO cookie
  29         ip netns exec "${NETNS}" ip tcp_metrics flush
  30         ip netns exec "${NETNS}" ./tcp_fastopen_backup_key "$1"
  31         val=$(ip netns exec "${NETNS}" nstat -az | \
  32                 grep TcpExtTCPFastOpenPassiveFail | awk '{print $2}')
  33         if [ "$val" != 0 ]; then
  34                 echo "FAIL: TcpExtTCPFastOpenPassiveFail non-zero"
  35                 return 1
  36         fi
  37 }
  38
  39 do_test "-4"
  40 do_test "-6"
  41 do_test "-4"
  42 do_test "-6"
  43 do_test "-4s"
  44 do_test "-6s"
  45 do_test "-4s"
  46 do_test "-6s"
  47 do_test "-4r"
  48 do_test "-6r"
  49 do_test "-4r"
  50 do_test "-6r"
  51 do_test "-4sr"
  52 do_test "-6sr"
  53 do_test "-4sr"
  54 do_test "-6sr"
  55 echo "all tests done"