1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0-only
3
4 source ../../../net/net_helper.sh
5
6 NSIM_DEV_1_ID=$((256 + RANDOM % 256))
7 NSIM_DEV_1_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_DEV_1_ID
8 NSIM_DEV_2_ID=$((512 + RANDOM % 256))
9 NSIM_DEV_2_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_DEV_2_ID
10
11 NSIM_DEV_SYS_NEW=/sys/bus/netdevsim/new_device
12 NSIM_DEV_SYS_DEL=/sys/bus/netdevsim/del_device
13 NSIM_DEV_SYS_LINK=/sys/bus/netdevsim/link_device
14 NSIM_DEV_SYS_UNLINK=/sys/bus/netdevsim/unlink_device
15
16 socat_check()
17 {
18 if [ ! -x "$(command -v socat)" ]; then
19 echo "socat command not found. Skipping test"
20 return 1
21 fi
22
23 return 0
24 }
25
26 setup_ns()
27 {
28 set -e
29 ip netns add nssv
30 ip netns add nscl
31
32 NSIM_DEV_1_NAME=$(find $NSIM_DEV_1_SYS/net -maxdepth 1 -type d ! \
33 -path $NSIM_DEV_1_SYS/net -exec basename {} \;)
34 NSIM_DEV_2_NAME=$(find $NSIM_DEV_2_SYS/net -maxdepth 1 -type d ! \
35 -path $NSIM_DEV_2_SYS/net -exec basename {} \;)
36
37 ip link set $NSIM_DEV_1_NAME netns nssv
38 ip link set $NSIM_DEV_2_NAME netns nscl
39
40 ip netns exec nssv ip addr add '192.168.1.1/24' dev $NSIM_DEV_1_NAME
41 ip netns exec nscl ip addr add '192.168.1.2/24' dev $NSIM_DEV_2_NAME
42
43 ip netns exec nssv ip link set dev $NSIM_DEV_1_NAME up
44 ip netns exec nscl ip link set dev $NSIM_DEV_2_NAME up
45 set +e
46 }
47
48 cleanup_ns()
49 {
50 ip netns del nscl
51 ip netns del nssv
52 }
53
54 ###
55 ### Code start
56 ###
57
58 socat_check || exit 4
59
60 modprobe netdevsim
61
62 # linking
63
64 echo $NSIM_DEV_1_ID > $NSIM_DEV_SYS_NEW
65 echo $NSIM_DEV_2_ID > $NSIM_DEV_SYS_NEW
66 udevadm settle
67
68 setup_ns
69
70 NSIM_DEV_1_FD=$((256 + RANDOM % 256))
71 exec {NSIM_DEV_1_FD}</var/run/netns/nssv
72 NSIM_DEV_1_IFIDX=$(ip netns exec nssv cat /sys/class/net/$NSIM_DEV_1_NAME/ifindex)
73
74 NSIM_DEV_2_FD=$((256 + RANDOM % 256))
75 exec {NSIM_DEV_2_FD}</var/run/netns/nscl
76 NSIM_DEV_2_IFIDX=$(ip netns exec nscl cat /sys/class/net/$NSIM_DEV_2_NAME/ifindex)
77
78 echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_2_FD:2000" > $NSIM_DEV_SYS_LINK 2>/dev/null
79 if [ $? -eq 0 ]; then
80 echo "linking with non-existent netdevsim should fail"
81 cleanup_ns
82 exit 1
83 fi
84
85 echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX 2000:$NSIM_DEV_2_IFIDX" > $NSIM_DEV_SYS_LINK 2>/dev/null
86 if [ $? -eq 0 ]; then
87 echo "linking with non-existent netnsid should fail"
88 cleanup_ns
89 exit 1
90 fi
91
92 echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX" > $NSIM_DEV_SYS_LINK 2>/dev/null
93 if [ $? -eq 0 ]; then
94 echo "linking with self should fail"
95 cleanup_ns
96 exit 1
97 fi
98
99 echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_2_FD:$NSIM_DEV_2_IFIDX" > $NSIM_DEV_SYS_LINK
100 if [ $? -ne 0 ]; then
101 echo "linking netdevsim1 with netdevsim2 should succeed"
102 cleanup_ns
103 exit 1
104 fi
105
106 # argument error checking
107
108 echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_2_FD:a" > $NSIM_DEV_SYS_LINK 2>/dev/null
109 if [ $? -eq 0 ]; then
110 echo "invalid arg should fail"
111 cleanup_ns
112 exit 1
113 fi
114
115 # send/recv packets
116
117 tmp_file=$(mktemp)
118 ip netns exec nssv socat TCP-LISTEN:1234,fork $tmp_file &
119 pid=$!
120 res=0
121
122 wait_local_port_listen nssv 1234 tcp
123
124 echo "HI" | ip netns exec nscl socat STDIN TCP:192.168.1.1:1234
125
126 count=$(cat $tmp_file | wc -c)
127 if [[ $count -ne 3 ]]; then
128 echo "expected 3 bytes, got $count"
129 res=1
130 fi
131
132 echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX" > $NSIM_DEV_SYS_UNLINK
133
134 echo $NSIM_DEV_2_ID > $NSIM_DEV_SYS_DEL
135
136 kill $pid
137 echo $NSIM_DEV_1_ID > $NSIM_DEV_SYS_DEL
138
139 cleanup_ns
140
141 modprobe -r netdevsim
142
143 exit $res
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.