tools/testing/selftests/net/reuseaddr_ports_exhausted.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Run tests when all ephemeral ports are exhausted.
   5 #
   6 # Author: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
   7
   8 set +x
   9 set -e
  10
  11 readonly NETNS="ns-$(mktemp -u XXXXXX)"
  12
  13 setup() {
  14         ip netns add "${NETNS}"
  15         ip -netns "${NETNS}" link set lo up
  16         ip netns exec "${NETNS}" \
  17                 sysctl -w net.ipv4.ip_local_port_range="32768 32768" \
  18                 > /dev/null 2>&1
  19         ip netns exec "${NETNS}" \
  20                 sysctl -w net.ipv4.ip_autobind_reuse=1 > /dev/null 2>&1
  21 }
  22
  23 cleanup() {
  24         ip netns del "${NETNS}"
  25 }
  26
  27 trap cleanup EXIT
  28 setup
  29
  30 do_test() {
  31         ip netns exec "${NETNS}" ./reuseaddr_ports_exhausted
  32 }
  33
  34 do_test
  35 echo "tests done"