tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4# Test routing over bridge and verify that the order of configuration does not
5# impact switch behavior. Verify that RIF is added correctly for existing
6# mappings and that new mappings use the correct RIF.
7
8# +-------------------+ +--------------------+
9# | H1 | | H2 |
10# | | | |
11# | $h1.10 + | | + $h2.10 |
12# | 192.0.2.1/28 | | | | 192.0.2.3/28 |
13# | | | | | |
14# | $h1 + | | + $h2 |
15# +----------------|--+ +--|-----------------+
16# | |
17# +----------------|-------------------------|-----------------+
18# | SW $swp1 + + $swp2 |
19# | | | |
20# | +--------------|-------------------------|---------------+ |
21# | | $swp1.10 + + $swp2.10 | |
22# | | | |
23# | | br0 | |
24# | | 192.0.2.2/28 | |
25# | +--------------------------------------------------------+ |
26# | |
27# | $swp3.10 + |
28# | 192.0.2.17/28 | |
29# | | |
30# | $swp3 + |
31# +---------------|--------------------------------------------+
32# |
33# +---------------|--+
34# | $h3 + |
35# | | |
36# | $h3.10 + |
37# | 192.0.2.18/28 |
38# | |
39# | H3 |
40# +------------------+
41
42lib_dir=$(dirname $0)/../../../net/forwarding
43
44ALL_TESTS="
45 port_vid_map_rif
46 rif_port_vid_map
47"
48
49NUM_NETIFS=6
50source $lib_dir/lib.sh
51source $lib_dir/tc_common.sh
52source $lib_dir/devlink_lib.sh
53
54h1_create()
55{
56 simple_if_init $h1
57 vlan_create $h1 10 v$h1 192.0.2.1/28
58
59 ip route add 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2
60}
61
62h1_destroy()
63{
64 ip route del 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2
65
66 vlan_destroy $h1 10
67 simple_if_fini $h1
68}
69
70h2_create()
71{
72 simple_if_init $h2
73 vlan_create $h2 10 v$h2 192.0.2.3/28
74}
75
76h2_destroy()
77{
78 vlan_destroy $h2 10
79 simple_if_fini $h2
80}
81
82h3_create()
83{
84 simple_if_init $h3
85 vlan_create $h3 10 v$h3 192.0.2.18/28
86
87 ip route add 192.0.2.0/28 vrf v$h3 nexthop via 192.0.2.17
88}
89
90h3_destroy()
91{
92 ip route del 192.0.2.0/28 vrf v$h3 nexthop via 192.0.2.17
93
94 vlan_destroy $h3 10
95 simple_if_fini $h3
96}
97
98switch_create()
99{
100 ip link set dev $swp1 up
101
102 ip link add dev br0 type bridge mcast_snooping 0
103
104 # By default, a link-local address is generated when netdevice becomes
105 # up. Adding an address to the bridge will cause creating a RIF for it.
106 # Prevent generating link-local address to be able to control when the
107 # RIF is added.
108 sysctl_set net.ipv6.conf.br0.addr_gen_mode 1
109 ip link set dev br0 up
110
111 ip link set dev $swp2 up
112 vlan_create $swp2 10
113 ip link set dev $swp2.10 master br0
114
115 ip link set dev $swp3 up
116 vlan_create $swp3 10 "" 192.0.2.17/28
117 tc qdisc add dev $swp3 clsact
118
119 # Replace neighbor to avoid 1 packet which is forwarded in software due
120 # to "unresolved neigh".
121 ip neigh replace dev $swp3.10 192.0.2.18 lladdr $(mac_get $h3.10)
122}
123
124switch_destroy()
125{
126 tc qdisc del dev $swp3 clsact
127 vlan_destroy $swp3 10
128 ip link set dev $swp3 down
129
130 ip link set dev $swp2.10 nomaster
131 vlan_destroy $swp2 10
132 ip link set dev $swp2 down
133
134 ip link set dev br0 down
135 sysctl_restore net.ipv6.conf.br0.addr_gen_mode
136 ip link del dev br0
137
138 ip link set dev $swp1 down
139}
140
141setup_prepare()
142{
143 h1=${NETIFS[p1]}
144 swp1=${NETIFS[p2]}
145
146 swp2=${NETIFS[p3]}
147 h2=${NETIFS[p4]}
148
149 swp3=${NETIFS[p5]}
150 h3=${NETIFS[p6]}
151
152 vrf_prepare
153 forwarding_enable
154
155 h1_create
156 h2_create
157 h3_create
158
159 switch_create
160}
161
162cleanup()
163{
164 pre_cleanup
165
166 switch_destroy
167
168 h3_destroy
169 h2_destroy
170 h1_destroy
171
172 forwarding_restore
173 vrf_cleanup
174}
175
176bridge_rif_add()
177{
178 rifs_occ_t0=$(devlink_resource_occ_get rifs)
179 __addr_add_del br0 add 192.0.2.2/28
180 rifs_occ_t1=$(devlink_resource_occ_get rifs)
181
182 expected_rifs=$((rifs_occ_t0 + 1))
183
184 [[ $expected_rifs -eq $rifs_occ_t1 ]]
185 check_err $? "Expected $expected_rifs RIFs, $rifs_occ_t1 are used"
186
187 sleep 1
188}
189
190bridge_rif_del()
191{
192 __addr_add_del br0 del 192.0.2.2/28
193}
194
195port_vid_map_rif()
196{
197 RET=0
198
199 # First add {port, VID}->FID for $swp1.10, then add a RIF and verify
200 # that packets can be routed via the existing mapping.
201 vlan_create $swp1 10
202 ip link set dev $swp1.10 master br0
203 bridge_rif_add
204
205 # The hardware matches on the first ethertype which is not VLAN,
206 # so the protocol should be IP.
207 tc filter add dev $swp3 egress protocol ip pref 1 handle 101 \
208 flower skip_sw dst_ip 192.0.2.18 action pass
209
210 ping_do $h1.10 192.0.2.18
211 check_err $? "Ping failed"
212
213 tc_check_at_least_x_packets "dev $swp3 egress" 101 10
214 check_err $? "Packets were not routed in hardware"
215
216 log_test "Add RIF for existing {port, VID}->FID mapping"
217
218 tc filter del dev $swp3 egress
219
220 bridge_rif_del
221 ip link set dev $swp1.10 nomaster
222 vlan_destroy $swp1 10
223}
224
225rif_port_vid_map()
226{
227 RET=0
228
229 # First add an address to the bridge, which will create a RIF on top of
230 # it, then add a new {port, VID}->FID mapping and verify that packets
231 # can be routed via the new mapping.
232 bridge_rif_add
233 vlan_create $swp1 10
234 ip link set dev $swp1.10 master br0
235
236 # The hardware matches on the first ethertype which is not VLAN,
237 # so the protocol should be IP.
238 tc filter add dev $swp3 egress protocol ip pref 1 handle 101 \
239 flower skip_sw dst_ip 192.0.2.18 action pass
240
241 ping_do $h1.10 192.0.2.18
242 check_err $? "Ping failed"
243
244 tc_check_at_least_x_packets "dev $swp3 egress" 101 10
245 check_err $? "Packets were not routed in hardware"
246
247 log_test "Add {port, VID}->FID mapping for FID with a RIF"
248
249 tc filter del dev $swp3 egress
250
251 ip link set dev $swp1.10 nomaster
252 vlan_destroy $swp1 10
253 bridge_rif_del
254}
255
256trap cleanup EXIT
257
258setup_prepare
259setup_wait
260
261tests_run
262
263exit $EXIT_STATUS