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