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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# ns: h1 | ns: h2
# 192.168.0.1/24 |
# eth0 |
# | 192.168.1.1/32
# veth0 <---|---> veth1
# Validate source address selection for route without gateway
PAUSE_ON_FAIL=no
VERBOSE=0
ret=0
################################################################################
# helpers
log_test()
{
local rc=$1
local expected=$2
local msg="$3"
if [ ${rc} -eq ${expected} ]; then
printf "TEST: %-60s [ OK ]\n" "${msg}"
nsuccess=$((nsuccess+1))
else
ret=1
nfail=$((nfail+1))
printf "TEST: %-60s [FAIL]\n" "${msg}"
if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
echo
echo "hit enter to continue, 'q' to quit"
read a
[ "$a" = "q" ] && exit 1
fi
fi
[ "$VERBOSE" = "1" ] && echo
}
run_cmd()
{
local cmd="$*"
local out
local rc
if [ "$VERBOSE" = "1" ]; then
echo "COMMAND: $cmd"
fi
out=$(eval $cmd 2>&1)
rc=$?
if [ "$VERBOSE" = "1" -a -n "$out" ]; then
echo "$out"
fi
[ "$VERBOSE" = "1" ] && echo
return $rc
}
################################################################################
# config
setup()
{
ip netns add h1
ip -n h1 link set lo up
ip netns add h2
ip -n h2 link set lo up
# Add a fake eth0 to support an ip address
ip -n h1 link add name eth0 type dummy
ip -n h1 link set eth0 up
ip -n h1 address add 192.168.0.1/24 dev eth0
# Configure veths (same @mac, arp off)
ip -n h1 link add name veth0 type veth peer name veth1 netns h2
ip -n h1 link set veth0 up
ip -n h2 link set veth1 up
# Configure @IP in the peer netns
ip -n h2 address add 192.168.1.1/32 dev veth1
ip -n h2 route add default dev veth1
# Add a nexthop without @gw and use it in a route
ip -n h1 nexthop add id 1 dev veth0
ip -n h1 route add 192.168.1.1 nhid 1
}
cleanup()
{
ip netns del h1 2>/dev/null
ip netns del h2 2>/dev/null
}
trap cleanup EXIT
################################################################################
# main
while getopts :pv o
do
case $o in
p) PAUSE_ON_FAIL=yes;;
v) VERBOSE=1;;
esac
done
cleanup
setup
run_cmd ip -netns h1 route get 192.168.1.1
log_test $? 0 "nexthop: get route with nexthop without gw"
run_cmd ip netns exec h1 ping -c1 192.168.1.1
log_test $? 0 "nexthop: ping through nexthop without gw"
exit $ret
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