tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3#
4# ns: h1 | ns: h2
5# 192.168.0.1/24 |
6# eth0 |
7# | 192.168.1.1/32
8# veth0 <---|---> veth1
9# Validate source address selection for route without gateway
10
11PAUSE_ON_FAIL=no
12VERBOSE=0
13ret=0
14
15################################################################################
16# helpers
17
18log_test()
19{
20 local rc=$1
21 local expected=$2
22 local msg="$3"
23
24 if [ ${rc} -eq ${expected} ]; then
25 printf "TEST: %-60s [ OK ]\n" "${msg}"
26 nsuccess=$((nsuccess+1))
27 else
28 ret=1
29 nfail=$((nfail+1))
30 printf "TEST: %-60s [FAIL]\n" "${msg}"
31 if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
32 echo
33 echo "hit enter to continue, 'q' to quit"
34 read a
35 [ "$a" = "q" ] && exit 1
36 fi
37 fi
38
39 [ "$VERBOSE" = "1" ] && echo
40}
41
42run_cmd()
43{
44 local cmd="$*"
45 local out
46 local rc
47
48 if [ "$VERBOSE" = "1" ]; then
49 echo "COMMAND: $cmd"
50 fi
51
52 out=$(eval $cmd 2>&1)
53 rc=$?
54 if [ "$VERBOSE" = "1" -a -n "$out" ]; then
55 echo "$out"
56 fi
57
58 [ "$VERBOSE" = "1" ] && echo
59
60 return $rc
61}
62
63################################################################################
64# config
65setup()
66{
67 ip netns add h1
68 ip -n h1 link set lo up
69 ip netns add h2
70 ip -n h2 link set lo up
71
72 # Add a fake eth0 to support an ip address
73 ip -n h1 link add name eth0 type dummy
74 ip -n h1 link set eth0 up
75 ip -n h1 address add 192.168.0.1/24 dev eth0
76
77 # Configure veths (same @mac, arp off)
78 ip -n h1 link add name veth0 type veth peer name veth1 netns h2
79 ip -n h1 link set veth0 up
80
81 ip -n h2 link set veth1 up
82
83 # Configure @IP in the peer netns
84 ip -n h2 address add 192.168.1.1/32 dev veth1
85 ip -n h2 route add default dev veth1
86
87 # Add a nexthop without @gw and use it in a route
88 ip -n h1 nexthop add id 1 dev veth0
89 ip -n h1 route add 192.168.1.1 nhid 1
90}
91
92cleanup()
93{
94 ip netns del h1 2>/dev/null
95 ip netns del h2 2>/dev/null
96}
97
98trap cleanup EXIT
99
100################################################################################
101# main
102
103while getopts :pv o
104do
105 case $o in
106 p) PAUSE_ON_FAIL=yes;;
107 v) VERBOSE=1;;
108 esac
109done
110
111cleanup
112setup
113
114run_cmd ip -netns h1 route get 192.168.1.1
115log_test $? 0 "nexthop: get route with nexthop without gw"
116run_cmd ip netns exec h1 ping -c1 192.168.1.1
117log_test $? 0 "nexthop: ping through nexthop without gw"
118
119exit $ret