name : fib_nexthop_nongw.sh #!/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 source lib.sh 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() { setup_ns h1 h2 # 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() { cleanup_ns $h1 $h2 } trap cleanup EXIT ################################################################################ # main while getopts :pv o do case $o in p) PAUSE_ON_FAIL=yes;; v) VERBOSE=1;; esac done 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