tools/testing/selftests/bpf/with_addr.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # add private ipv4 and ipv6 addresses to loopback
   5
   6 readonly V6_INNER='100::a/128'
   7 readonly V4_INNER='192.168.0.1/32'
   8
   9 if getopts ":s" opt; then
  10   readonly SIT_DEV_NAME='sixtofourtest0'
  11   readonly V6_SIT='2::/64'
  12   readonly V4_SIT='172.17.0.1/32'
  13   shift
  14 fi
  15
  16 fail() {
  17   echo "error: $*" 1>&2
  18   exit 1
  19 }
  20
  21 setup() {
  22   ip -6 addr add "${V6_INNER}" dev lo || fail 'failed to setup v6 address'
  23   ip -4 addr add "${V4_INNER}" dev lo || fail 'failed to setup v4 address'
  24
  25   if [[ -n "${V6_SIT}" ]]; then
  26     ip link add "${SIT_DEV_NAME}" type sit remote any local any \
  27             || fail 'failed to add sit'
  28     ip link set dev "${SIT_DEV_NAME}" up \
  29             || fail 'failed to bring sit device up'
  30     ip -6 addr add "${V6_SIT}" dev "${SIT_DEV_NAME}" \
  31             || fail 'failed to setup v6 SIT address'
  32     ip -4 addr add "${V4_SIT}" dev "${SIT_DEV_NAME}" \
  33             || fail 'failed to setup v4 SIT address'
  34   fi
  35
  36   sleep 2       # avoid race causing bind to fail
  37 }
  38
  39 cleanup() {
  40   if [[ -n "${V6_SIT}" ]]; then
  41     ip -4 addr del "${V4_SIT}" dev "${SIT_DEV_NAME}"
  42     ip -6 addr del "${V6_SIT}" dev "${SIT_DEV_NAME}"
  43     ip link del "${SIT_DEV_NAME}"
  44   fi
  45
  46   ip -4 addr del "${V4_INNER}" dev lo
  47   ip -6 addr del "${V6_INNER}" dev lo
  48 }
  49
  50 trap cleanup EXIT
  51
  52 setup
  53 "$@"
  54 exit "$?"