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