projects/linux·blob master · refs

203 lines · 4.7 KiB

1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0-only
3
4lib_dir=$(dirname $0)/../../../net
5source $lib_dir/lib.sh
6
7NSIM_DEV_1_ID=$((256 + RANDOM % 256))
8NSIM_DEV_1_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_DEV_1_ID
9NSIM_DEV_2_ID=$((512 + RANDOM % 256))
10NSIM_DEV_2_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_DEV_2_ID
11
12NSIM_DEV_SYS_NEW=/sys/bus/netdevsim/new_device
13NSIM_DEV_SYS_DEL=/sys/bus/netdevsim/del_device
14NSIM_DEV_SYS_LINK=/sys/bus/netdevsim/link_device
15NSIM_DEV_SYS_UNLINK=/sys/bus/netdevsim/unlink_device
16
17socat_check()
18{
19 if [ ! -x "$(command -v socat)" ]; then
20 echo "socat command not found. Skipping test"
21 return 1
22 fi
23
24 return 0
25}
26
27setup_ns()
28{
29 set -e
30 ip netns add nssv
31 ip netns add nscl
32
33 NSIM_DEV_1_NAME=$(find $NSIM_DEV_1_SYS/net -maxdepth 1 -type d ! \
34 -path $NSIM_DEV_1_SYS/net -exec basename {} \;)
35 NSIM_DEV_2_NAME=$(find $NSIM_DEV_2_SYS/net -maxdepth 1 -type d ! \
36 -path $NSIM_DEV_2_SYS/net -exec basename {} \;)
37
38 ip link set $NSIM_DEV_1_NAME netns nssv
39 ip link set $NSIM_DEV_2_NAME netns nscl
40
41 ip netns exec nssv ip addr add '192.168.1.1/24' dev $NSIM_DEV_1_NAME
42 ip netns exec nscl ip addr add '192.168.1.2/24' dev $NSIM_DEV_2_NAME
43
44 ip netns exec nssv ip link set dev $NSIM_DEV_1_NAME up
45 ip netns exec nscl ip link set dev $NSIM_DEV_2_NAME up
46 set +e
47}
48
49cleanup_ns()
50{
51 ip netns del nscl
52 ip netns del nssv
53}
54
55is_carrier_up()
56{
57 local netns="$1"
58 local nsim_dev="$2"
59
60 test "$(ip netns exec "$netns" \
61 cat /sys/class/net/"$nsim_dev"/carrier 2>/dev/null)" -eq 1
62}
63
64assert_carrier_up()
65{
66 local netns="$1"
67 local nsim_dev="$2"
68
69 if ! is_carrier_up "$netns" "$nsim_dev"; then
70 echo "$nsim_dev's carrier should be UP, but it isn't"
71 cleanup_ns
72 exit 1
73 fi
74}
75
76assert_carrier_down()
77{
78 local netns="$1"
79 local nsim_dev="$2"
80
81 if is_carrier_up "$netns" "$nsim_dev"; then
82 echo "$nsim_dev's carrier should be DOWN, but it isn't"
83 cleanup_ns
84 exit 1
85 fi
86}
87
88###
89### Code start
90###
91
92socat_check || exit 4
93
94modprobe netdevsim
95
96# linking
97
98echo $NSIM_DEV_1_ID > $NSIM_DEV_SYS_NEW
99echo $NSIM_DEV_2_ID > $NSIM_DEV_SYS_NEW
100udevadm settle
101
102setup_ns
103
104NSIM_DEV_1_FD=$((256 + RANDOM % 256))
105exec {NSIM_DEV_1_FD}</var/run/netns/nssv
106NSIM_DEV_1_IFIDX=$(ip netns exec nssv cat /sys/class/net/$NSIM_DEV_1_NAME/ifindex)
107
108NSIM_DEV_2_FD=$((256 + RANDOM % 256))
109exec {NSIM_DEV_2_FD}</var/run/netns/nscl
110NSIM_DEV_2_IFIDX=$(ip netns exec nscl cat /sys/class/net/$NSIM_DEV_2_NAME/ifindex)
111
112echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_2_FD:2000" > $NSIM_DEV_SYS_LINK 2>/dev/null
113if [ $? -eq 0 ]; then
114 echo "linking with non-existent netdevsim should fail"
115 cleanup_ns
116 exit 1
117fi
118
119echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX 2000:$NSIM_DEV_2_IFIDX" > $NSIM_DEV_SYS_LINK 2>/dev/null
120if [ $? -eq 0 ]; then
121 echo "linking with non-existent netnsid should fail"
122 cleanup_ns
123 exit 1
124fi
125
126echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX" > $NSIM_DEV_SYS_LINK 2>/dev/null
127if [ $? -eq 0 ]; then
128 echo "linking with self should fail"
129 cleanup_ns
130 exit 1
131fi
132
133echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_2_FD:$NSIM_DEV_2_IFIDX" > $NSIM_DEV_SYS_LINK
134if [ $? -ne 0 ]; then
135 echo "linking netdevsim1 with netdevsim2 should succeed"
136 cleanup_ns
137 exit 1
138fi
139
140# argument error checking
141
142echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_2_FD:a" > $NSIM_DEV_SYS_LINK 2>/dev/null
143if [ $? -eq 0 ]; then
144 echo "invalid arg should fail"
145 cleanup_ns
146 exit 1
147fi
148
149# netdevsim carrier state consistency checking
150assert_carrier_up nssv "$NSIM_DEV_1_NAME"
151assert_carrier_up nscl "$NSIM_DEV_2_NAME"
152
153echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX" > "$NSIM_DEV_SYS_UNLINK"
154
155assert_carrier_down nssv "$NSIM_DEV_1_NAME"
156assert_carrier_down nscl "$NSIM_DEV_2_NAME"
157
158ip netns exec nssv ip link set dev "$NSIM_DEV_1_NAME" down
159ip netns exec nssv ip link set dev "$NSIM_DEV_1_NAME" up
160
161assert_carrier_down nssv "$NSIM_DEV_1_NAME"
162assert_carrier_down nscl "$NSIM_DEV_2_NAME"
163
164echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX $NSIM_DEV_2_FD:$NSIM_DEV_2_IFIDX" > $NSIM_DEV_SYS_LINK
165
166assert_carrier_up nssv "$NSIM_DEV_1_NAME"
167assert_carrier_up nscl "$NSIM_DEV_2_NAME"
168
169ip netns exec nssv ip link set dev "$NSIM_DEV_1_NAME" down
170ip netns exec nssv ip link set dev "$NSIM_DEV_1_NAME" up
171
172assert_carrier_up nssv "$NSIM_DEV_1_NAME"
173assert_carrier_up nscl "$NSIM_DEV_2_NAME"
174
175# send/recv packets
176
177tmp_file=$(mktemp)
178ip netns exec nssv socat TCP-LISTEN:1234,fork $tmp_file &
179pid=$!
180res=0
181
182wait_local_port_listen nssv 1234 tcp
183
184echo "HI" | ip netns exec nscl socat STDIN TCP:192.168.1.1:1234
185
186count=$(cat $tmp_file | wc -c)
187if [[ $count -ne 3 ]]; then
188 echo "expected 3 bytes, got $count"
189 res=1
190fi
191
192echo "$NSIM_DEV_1_FD:$NSIM_DEV_1_IFIDX" > $NSIM_DEV_SYS_UNLINK
193
194echo $NSIM_DEV_2_ID > $NSIM_DEV_SYS_DEL
195
196kill $pid
197echo $NSIM_DEV_1_ID > $NSIM_DEV_SYS_DEL
198
199cleanup_ns
200
201modprobe -r netdevsim
202
203exit $res