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
3
4ALL_TESTS="
5 ping_ipv4
6 ping_ipv6
7 sip_in_class_e
8 mc_mac_mismatch
9 ipv4_sip_equal_dip
10 ipv6_sip_equal_dip
11 ipv4_dip_link_local
12"
13
14NUM_NETIFS=4
15source lib.sh
16source tc_common.sh
17
18require_command $MCD
19require_command $MC_CLI
20table_name=selftests
21
22h1_create()
23{
24 vrf_create "vrf-h1"
25 ip link set dev $h1 master vrf-h1
26
27 ip link set dev vrf-h1 up
28 ip link set dev $h1 up
29
30 ip address add 192.0.2.2/24 dev $h1
31 ip address add 2001:db8:1::2/64 dev $h1
32
33 ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1
34 ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1
35}
36
37h1_destroy()
38{
39 ip route del 2001:db8:2::/64 vrf vrf-h1
40 ip route del 198.51.100.0/24 vrf vrf-h1
41
42 ip address del 2001:db8:1::2/64 dev $h1
43 ip address del 192.0.2.2/24 dev $h1
44
45 ip link set dev $h1 down
46 vrf_destroy "vrf-h1"
47}
48
49h2_create()
50{
51 vrf_create "vrf-h2"
52 ip link set dev $h2 master vrf-h2
53
54 ip link set dev vrf-h2 up
55 ip link set dev $h2 up
56
57 ip address add 198.51.100.2/24 dev $h2
58 ip address add 2001:db8:2::2/64 dev $h2
59
60 ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1
61 ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1
62}
63
64h2_destroy()
65{
66 ip route del 2001:db8:1::/64 vrf vrf-h2
67 ip route del 192.0.2.0/24 vrf vrf-h2
68
69 ip address del 2001:db8:2::2/64 dev $h2
70 ip address del 198.51.100.2/24 dev $h2
71
72 ip link set dev $h2 down
73 vrf_destroy "vrf-h2"
74}
75
76router_create()
77{
78 ip link set dev $rp1 up
79 ip link set dev $rp2 up
80
81 tc qdisc add dev $rp2 clsact
82
83 ip address add 192.0.2.1/24 dev $rp1
84 ip address add 2001:db8:1::1/64 dev $rp1
85
86 ip address add 198.51.100.1/24 dev $rp2
87 ip address add 2001:db8:2::1/64 dev $rp2
88}
89
90router_destroy()
91{
92 ip address del 2001:db8:2::1/64 dev $rp2
93 ip address del 198.51.100.1/24 dev $rp2
94
95 ip address del 2001:db8:1::1/64 dev $rp1
96 ip address del 192.0.2.1/24 dev $rp1
97
98 tc qdisc del dev $rp2 clsact
99
100 ip link set dev $rp2 down
101 ip link set dev $rp1 down
102}
103
104start_mcd()
105{
106 SMCROUTEDIR="$(mktemp -d)"
107
108 for ((i = 1; i <= $NUM_NETIFS; ++i)); do
109 echo "phyint ${NETIFS[p$i]} enable" >> \
110 $SMCROUTEDIR/$table_name.conf
111 done
112
113 $MCD -N -I $table_name -f $SMCROUTEDIR/$table_name.conf \
114 -P $SMCROUTEDIR/$table_name.pid
115}
116
117kill_mcd()
118{
119 pkill $MCD
120 rm -rf $SMCROUTEDIR
121}
122
123setup_prepare()
124{
125 h1=${NETIFS[p1]}
126 rp1=${NETIFS[p2]}
127
128 rp2=${NETIFS[p3]}
129 h2=${NETIFS[p4]}
130
131 rp1mac=$(mac_get $rp1)
132
133 start_mcd
134
135 vrf_prepare
136
137 h1_create
138 h2_create
139
140 router_create
141
142 forwarding_enable
143}
144
145cleanup()
146{
147 pre_cleanup
148
149 forwarding_restore
150
151 router_destroy
152
153 h2_destroy
154 h1_destroy
155
156 vrf_cleanup
157
158 kill_mcd
159}
160
161ping_ipv4()
162{
163 ping_test $h1 198.51.100.2
164}
165
166ping_ipv6()
167{
168 ping6_test $h1 2001:db8:2::2
169}
170
171sip_in_class_e()
172{
173 RET=0
174
175 # Disable rpfilter to prevent packets to be dropped because of it.
176 sysctl_set net.ipv4.conf.all.rp_filter 0
177 sysctl_set net.ipv4.conf.$rp1.rp_filter 0
178
179 tc filter add dev $rp2 egress protocol ip pref 1 handle 101 \
180 flower src_ip 240.0.0.1 ip_proto udp action pass
181
182 $MZ $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec \
183 -A 240.0.0.1 -b $rp1mac -B 198.51.100.2 -q
184
185 tc_check_packets "dev $rp2 egress" 101 5
186 check_err $? "Packets were dropped"
187
188 log_test "Source IP in class E"
189
190 tc filter del dev $rp2 egress protocol ip pref 1 handle 101 flower
191 sysctl_restore net.ipv4.conf.$rp1.rp_filter
192 sysctl_restore net.ipv4.conf.all.rp_filter
193}
194
195create_mcast_sg()
196{
197 local if_name=$1; shift
198 local s_addr=$1; shift
199 local mcast=$1; shift
200 local dest_ifs=${@}
201
202 $MC_CLI -I $table_name add $if_name $s_addr $mcast $dest_ifs
203}
204
205delete_mcast_sg()
206{
207 local if_name=$1; shift
208 local s_addr=$1; shift
209 local mcast=$1; shift
210 local dest_ifs=${@}
211
212 $MC_CLI -I $table_name remove $if_name $s_addr $mcast $dest_ifs
213}
214
215__mc_mac_mismatch()
216{
217 local desc=$1; shift
218 local proto=$1; shift
219 local sip=$1; shift
220 local dip=$1; shift
221 local flags=${1:-""}; shift
222 local dmac=01:02:03:04:05:06
223
224 RET=0
225
226 tc filter add dev $rp2 egress protocol $proto pref 1 handle 101 \
227 flower dst_ip $dip action pass
228
229 create_mcast_sg $rp1 $sip $dip $rp2
230
231 $MZ $flags $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec -b $dmac \
232 -B $dip -q
233
234 tc_check_packets "dev $rp2 egress" 101 5
235 check_err $? "Packets were dropped"
236
237 log_test "Multicast MAC mismatch: $desc"
238
239 delete_mcast_sg $rp1 $sip $dip $rp2
240 tc filter del dev $rp2 egress protocol $proto pref 1 handle 101 flower
241}
242
243mc_mac_mismatch()
244{
245 __mc_mac_mismatch "IPv4" "ip" 192.0.2.2 225.1.2.3
246 __mc_mac_mismatch "IPv6" "ipv6" 2001:db8:1::2 ff0e::3 "-6"
247}
248
249ipv4_sip_equal_dip()
250{
251 RET=0
252
253 # Disable rpfilter to prevent packets to be dropped because of it.
254 sysctl_set net.ipv4.conf.all.rp_filter 0
255 sysctl_set net.ipv4.conf.$rp1.rp_filter 0
256
257 tc filter add dev $rp2 egress protocol ip pref 1 handle 101 \
258 flower src_ip 198.51.100.2 action pass
259
260 $MZ $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec \
261 -A 198.51.100.2 -b $rp1mac -B 198.51.100.2 -q
262
263 tc_check_packets "dev $rp2 egress" 101 5
264 check_err $? "Packets were dropped"
265
266 log_test "Source IP is equal to destination IP: IPv4"
267
268 tc filter del dev $rp2 egress protocol ip pref 1 handle 101 flower
269 sysctl_restore net.ipv4.conf.$rp1.rp_filter
270 sysctl_restore net.ipv4.conf.all.rp_filter
271}
272
273ipv6_sip_equal_dip()
274{
275 RET=0
276
277 tc filter add dev $rp2 egress protocol ipv6 pref 1 handle 101 \
278 flower src_ip 2001:db8:2::2 action pass
279
280 $MZ -6 $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec \
281 -A 2001:db8:2::2 -b $rp1mac -B 2001:db8:2::2 -q
282
283 tc_check_packets "dev $rp2 egress" 101 5
284 check_err $? "Packets were dropped"
285
286 log_test "Source IP is equal to destination IP: IPv6"
287
288 tc filter del dev $rp2 egress protocol ipv6 pref 1 handle 101 flower
289}
290
291ipv4_dip_link_local()
292{
293 local dip=169.254.1.1
294
295 RET=0
296
297 tc filter add dev $rp2 egress protocol ip pref 1 handle 101 \
298 flower dst_ip $dip action pass
299
300 ip neigh add 169.254.1.1 lladdr 00:11:22:33:44:55 dev $rp2
301 ip route add 169.254.1.0/24 dev $rp2
302
303 $MZ $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec -b $rp1mac -B $dip -q
304
305 tc_check_packets "dev $rp2 egress" 101 5
306 check_err $? "Packets were dropped"
307
308 log_test "IPv4 destination IP is link-local"
309
310 ip route del 169.254.1.0/24 dev $rp2
311 ip neigh del 169.254.1.1 lladdr 00:11:22:33:44:55 dev $rp2
312 tc filter del dev $rp2 egress protocol ip pref 1 handle 101 flower
313}
314
315trap cleanup EXIT
316
317setup_prepare
318setup_wait
319
320tests_run
321
322exit $EXIT_STATUS