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 VLAN classification after routing and verify that the order of
5# configuration does not impact switch behavior. Verify that {RIF, Port}->VID
6# mapping is added correctly for existing {Port, VID}->FID mapping and that
7# {RIF, Port}->VID mapping is added correctly for new {Port, VID}->FID mapping.
8
9# +-------------------+ +--------------------+
10# | H1 | | H2 |
11# | | | |
12# | $h1.10 + | | + $h2.10 |
13# | 192.0.2.1/28 | | | | 192.0.2.3/28 |
14# | | | | | |
15# | $h1 + | | + $h2 |
16# +----------------|--+ +--|-----------------+
17# | |
18# +----------------|-------------------------|-----------------+
19# | SW $swp1 + + $swp2 |
20# | | | |
21# | +--------------|-------------------------|---------------+ |
22# | | $swp1.10 + + $swp2.10 | |
23# | | | |
24# | | br0 | |
25# | | 192.0.2.2/28 | |
26# | +--------------------------------------------------------+ |
27# | |
28# | $swp3.20 + |
29# | 192.0.2.17/28 | |
30# | | |
31# | $swp3 + |
32# +---------------|--------------------------------------------+
33# |
34# +---------------|--+
35# | $h3 + |
36# | | |
37# | $h3.20 + |
38# | 192.0.2.18/28 |
39# | |
40# | H3 |
41# +------------------+
42
43lib_dir=$(dirname $0)/../../../net/forwarding
44
45ALL_TESTS="
46 port_vid_map_rif
47 rif_port_vid_map
48"
49
50NUM_NETIFS=6
51source $lib_dir/lib.sh
52source $lib_dir/tc_common.sh
53source $lib_dir/devlink_lib.sh
54
55h1_create()
56{
57 simple_if_init $h1
58 vlan_create $h1 10 v$h1 192.0.2.1/28
59
60 ip route add 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2
61}
62
63h1_destroy()
64{
65 ip route del 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2
66
67 vlan_destroy $h1 10
68 simple_if_fini $h1
69}
70
71h2_create()
72{
73 simple_if_init $h2
74 vlan_create $h2 10 v$h2 192.0.2.3/28
75}
76
77h2_destroy()
78{
79 vlan_destroy $h2 10
80 simple_if_fini $h2
81}
82
83h3_create()
84{
85 simple_if_init $h3
86 vlan_create $h3 20 v$h3 192.0.2.18/28
87
88 ip route add 192.0.2.0/28 vrf v$h3 nexthop via 192.0.2.17
89}
90
91h3_destroy()
92{
93 ip route del 192.0.2.0/28 vrf v$h3 nexthop via 192.0.2.17
94
95 vlan_destroy $h3 20
96 simple_if_fini $h3
97}
98
99switch_create()
100{
101 ip link set dev $swp1 up
102 tc qdisc add dev $swp1 clsact
103
104 ip link add dev br0 type bridge mcast_snooping 0
105
106 # By default, a link-local address is generated when netdevice becomes
107 # up. Adding an address to the bridge will cause creating a RIF for it.
108 # Prevent generating link-local address to be able to control when the
109 # RIF is added.
110 sysctl_set net.ipv6.conf.br0.addr_gen_mode 1
111 ip link set dev br0 up
112
113 ip link set dev $swp2 up
114 vlan_create $swp2 10
115 ip link set dev $swp2.10 master br0
116
117 ip link set dev $swp3 up
118 vlan_create $swp3 20 "" 192.0.2.17/28
119
120 # Replace neighbor to avoid 1 packet which is forwarded in software due
121 # to "unresolved neigh".
122 ip neigh replace dev $swp3.20 192.0.2.18 lladdr $(mac_get $h3.20)
123}
124
125switch_destroy()
126{
127 vlan_destroy $swp3 20
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 tc qdisc del dev $swp1 clsact
139 ip link set dev $swp1 down
140}
141
142setup_prepare()
143{
144 h1=${NETIFS[p1]}
145 swp1=${NETIFS[p2]}
146
147 swp2=${NETIFS[p3]}
148 h2=${NETIFS[p4]}
149
150 swp3=${NETIFS[p5]}
151 h3=${NETIFS[p6]}
152
153 vrf_prepare
154 forwarding_enable
155
156 h1_create
157 h2_create
158 h3_create
159
160 switch_create
161}
162
163cleanup()
164{
165 pre_cleanup
166
167 switch_destroy
168
169 h3_destroy
170 h2_destroy
171 h1_destroy
172
173 forwarding_restore
174 vrf_cleanup
175}
176
177bridge_rif_add()
178{
179 rifs_occ_t0=$(devlink_resource_occ_get rifs)
180 __addr_add_del br0 add 192.0.2.2/28
181 rifs_occ_t1=$(devlink_resource_occ_get rifs)
182
183 expected_rifs=$((rifs_occ_t0 + 1))
184
185 [[ $expected_rifs -eq $rifs_occ_t1 ]]
186 check_err $? "Expected $expected_rifs RIFs, $rifs_occ_t1 are used"
187
188 sleep 1
189}
190
191bridge_rif_del()
192{
193 __addr_add_del br0 del 192.0.2.2/28
194}
195
196port_vid_map_rif()
197{
198 RET=0
199
200 # First add {port, VID}->FID for swp1.10, then add a RIF and verify that
201 # packets get the correct VID after routing.
202 vlan_create $swp1 10
203 ip link set dev $swp1.10 master br0
204 bridge_rif_add
205
206 # Replace neighbor to avoid 1 packet which is forwarded in software due
207 # to "unresolved neigh".
208 ip neigh replace dev br0 192.0.2.1 lladdr $(mac_get $h1.10)
209
210 # The hardware matches on the first ethertype which is not VLAN,
211 # so the protocol should be IP.
212 tc filter add dev $swp1 egress protocol ip pref 1 handle 101 \
213 flower skip_sw dst_ip 192.0.2.1 action pass
214
215 ping_do $h1.10 192.0.2.18
216 check_err $? "Ping failed"
217
218 tc_check_at_least_x_packets "dev $swp1 egress" 101 10
219 check_err $? "Packets were not routed in hardware"
220
221 log_test "Add RIF for existing {port, VID}->FID mapping"
222
223 tc filter del dev $swp1 egress
224
225 bridge_rif_del
226 ip link set dev $swp1.10 nomaster
227 vlan_destroy $swp1 10
228}
229
230rif_port_vid_map()
231{
232 RET=0
233
234 # First add an address to the bridge, which will create a RIF on top of
235 # it, then add a new {port, VID}->FID mapping and verify that packets
236 # get the correct VID after routing.
237 bridge_rif_add
238 vlan_create $swp1 10
239 ip link set dev $swp1.10 master br0
240
241 # Replace neighbor to avoid 1 packet which is forwarded in software due
242 # to "unresolved neigh".
243 ip neigh replace dev br0 192.0.2.1 lladdr $(mac_get $h1.10)
244
245 # The hardware matches on the first ethertype which is not VLAN,
246 # so the protocol should be IP.
247 tc filter add dev $swp1 egress protocol ip pref 1 handle 101 \
248 flower skip_sw dst_ip 192.0.2.1 action pass
249
250 ping_do $h1.10 192.0.2.18
251 check_err $? "Ping failed"
252
253 tc_check_at_least_x_packets "dev $swp1 egress" 101 10
254 check_err $? "Packets were not routed in hardware"
255
256 log_test "Add {port, VID}->FID mapping for FID with a RIF"
257
258 tc filter del dev $swp1 egress
259
260 ip link set dev $swp1.10 nomaster
261 vlan_destroy $swp1 10
262 bridge_rif_del
263}
264
265trap cleanup EXIT
266
267setup_prepare
268setup_wait
269
270tests_run
271
272exit $EXIT_STATUS