LXR linux/tools/testing/selftests/net/route

   1#!/bin/bash
   2# SPDX-License-Identifier: GPL-2.0
   3#
   4# Run a couple of tests when route_localnet = 1.
   5
   6readonly PEER_NS="ns-peer-$(mktemp -u XXXXXX)"
   7
   8setup() {
   9    ip netns add "${PEER_NS}"
  10    ip -netns "${PEER_NS}" link set dev lo up
  11    ip link add name veth0 type veth peer name veth1
  12    ip link set dev veth0 up
  13    ip link set dev veth1 netns "${PEER_NS}"
  14
  15    # Enable route_localnet and delete useless route 127.0.0.0/8.
  16    sysctl -w net.ipv4.conf.veth0.route_localnet=1
  17    ip netns exec "${PEER_NS}" sysctl -w net.ipv4.conf.veth1.route_localnet=1
  18    ip route del 127.0.0.0/8 dev lo table local
  19    ip netns exec "${PEER_NS}" ip route del 127.0.0.0/8 dev lo table local
  20
  21    ifconfig veth0 127.25.3.4/24 up
  22    ip netns exec "${PEER_NS}" ifconfig veth1 127.25.3.14/24 up
  23
  24    ip route flush cache
  25    ip netns exec "${PEER_NS}" ip route flush cache
  26}
  27
  28cleanup() {
  29    ip link del veth0
  30    ip route add local 127.0.0.0/8 dev lo proto kernel scope host src 127.0.0.1
  31    local -r ns="$(ip netns list|grep $PEER_NS)"
  32    [ -n "$ns" ] && ip netns del $ns 2>/dev/null
  33}
  34
  35# Run test when arp_announce = 2.
  36run_arp_announce_test() {
  37    echo "run arp_announce test"
  38    setup
  39
  40    sysctl -w net.ipv4.conf.veth0.arp_announce=2
  41    ip netns exec "${PEER_NS}" sysctl -w net.ipv4.conf.veth1.arp_announce=2
  42    ping -c5 -I veth0 127.25.3.14
  43    if [ $? -ne 0 ];then
  44        echo "failed"
  45    else
  46        echo "ok"
  47    fi
  48
  49    cleanup
  50}
  51
  52# Run test when arp_ignore = 3.
  53run_arp_ignore_test() {
  54    echo "run arp_ignore test"
  55    setup
  56
  57    sysctl -w net.ipv4.conf.veth0.arp_ignore=3
  58    ip netns exec "${PEER_NS}" sysctl -w net.ipv4.conf.veth1.arp_ignore=3
  59    ping -c5 -I veth0 127.25.3.14
  60    if [ $? -ne 0 ];then
  61        echo "failed"
  62    else
  63        echo "ok"
  64    fi
  65
  66    cleanup
  67}
  68
  69run_all_tests() {
  70    run_arp_announce_test
  71    run_arp_ignore_test
  72}
  73
  74run_all_tests
  75