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# Copyright 2020 NXP
4
5WAIT_TIME=1
6NUM_NETIFS=4
7STABLE_MAC_ADDRS=yes
8lib_dir=$(dirname $0)/../../../net/forwarding
9source $lib_dir/tc_common.sh
10source $lib_dir/lib.sh
11
12require_command tcpdump
13
14h1=${NETIFS[p1]}
15swp1=${NETIFS[p2]}
16swp2=${NETIFS[p3]}
17h2=${NETIFS[p4]}
18
19# Helpers to map a VCAP IS1 and VCAP IS2 lookup and policy to a chain number
20# used by the kernel driver. The numbers are:
21# VCAP IS1 lookup 0: 10000
22# VCAP IS1 lookup 1: 11000
23# VCAP IS1 lookup 2: 12000
24# VCAP IS2 lookup 0 policy 0: 20000
25# VCAP IS2 lookup 0 policy 1: 20001
26# VCAP IS2 lookup 0 policy 255: 20255
27# VCAP IS2 lookup 1 policy 0: 21000
28# VCAP IS2 lookup 1 policy 1: 21001
29# VCAP IS2 lookup 1 policy 255: 21255
30IS1()
31{
32 local lookup=$1
33
34 echo $((10000 + 1000 * lookup))
35}
36
37IS2()
38{
39 local lookup=$1
40 local pag=$2
41
42 echo $((20000 + 1000 * lookup + pag))
43}
44
45ES0()
46{
47 echo 0
48}
49
50# The Ocelot switches have a fixed ingress pipeline composed of:
51#
52# +----------------------------------------------+ +-----------------------------------------+
53# | VCAP IS1 | | VCAP IS2 |
54# | | | |
55# | +----------+ +----------+ +----------+ | | +----------+ +----------+ |
56# | | Lookup 0 | | Lookup 1 | | Lookup 2 | | --+------> PAG 0: | Lookup 0 | -> | Lookup 1 | |
57# | +----------+ -> +----------+ -> +----------+ | | | +----------+ +----------+ |
58# | |key&action| |key&action| |key&action| | | | |key&action| |key&action| |
59# | |key&action| |key&action| |key&action| | | | | .. | | .. | |
60# | | .. | | .. | | .. | | | | +----------+ +----------+ |
61# | +----------+ +----------+ +----------+ | | | |
62# | selects PAG | | | +----------+ +----------+ |
63# +----------------------------------------------+ +------> PAG 1: | Lookup 0 | -> | Lookup 1 | |
64# | | +----------+ +----------+ |
65# | | |key&action| |key&action| |
66# | | | .. | | .. | |
67# | | +----------+ +----------+ |
68# | | ... |
69# | | |
70# | | +----------+ +----------+ |
71# +----> PAG 254: | Lookup 0 | -> | Lookup 1 | |
72# | | +----------+ +----------+ |
73# | | |key&action| |key&action| |
74# | | | .. | | .. | |
75# | | +----------+ +----------+ |
76# | | |
77# | | +----------+ +----------+ |
78# +----> PAG 255: | Lookup 0 | -> | Lookup 1 | |
79# | +----------+ +----------+ |
80# | |key&action| |key&action| |
81# | | .. | | .. | |
82# | +----------+ +----------+ |
83# +-----------------------------------------+
84#
85# Both the VCAP IS1 (Ingress Stage 1) and IS2 (Ingress Stage 2) are indexed
86# (looked up) multiple times: IS1 3 times, and IS2 2 times. Each filter
87# (key and action pair) can be configured to only match during the first, or
88# second, etc, lookup.
89#
90# During one TCAM lookup, the filter processing stops at the first entry that
91# matches, then the pipeline jumps to the next lookup.
92# The driver maps each individual lookup of each individual ingress TCAM to a
93# separate chain number. For correct rule offloading, it is mandatory that each
94# filter installed in one TCAM is terminated by a non-optional GOTO action to
95# the next lookup from the fixed pipeline.
96#
97# A chain can only be used if there is a GOTO action correctly set up from the
98# prior lookup in the processing pipeline. Setting up all chains is not
99# mandatory.
100
101# NOTE: VCAP IS1 currently uses only S1_NORMAL half keys and VCAP IS2
102# dynamically chooses between MAC_ETYPE, ARP, IP4_TCP_UDP, IP4_OTHER, which are
103# all half keys as well.
104
105create_tcam_skeleton()
106{
107 local eth=$1
108
109 tc qdisc add dev $eth clsact
110
111 # VCAP IS1 is the Ingress Classification TCAM and can offload the
112 # following actions:
113 # - skbedit priority
114 # - vlan pop
115 # - vlan modify
116 # - goto (only in lookup 2, the last IS1 lookup)
117 tc filter add dev $eth ingress chain 0 pref 49152 flower \
118 skip_sw action goto chain $(IS1 0)
119 tc filter add dev $eth ingress chain $(IS1 0) pref 49152 \
120 flower skip_sw action goto chain $(IS1 1)
121 tc filter add dev $eth ingress chain $(IS1 1) pref 49152 \
122 flower skip_sw action goto chain $(IS1 2)
123 tc filter add dev $eth ingress chain $(IS1 2) pref 49152 \
124 flower skip_sw action goto chain $(IS2 0 0)
125
126 # VCAP IS2 is the Security Enforcement ingress TCAM and can offload the
127 # following actions:
128 # - trap
129 # - drop
130 # - police
131 # The two VCAP IS2 lookups can be segmented into up to 256 groups of
132 # rules, called Policies. A Policy is selected through the Policy
133 # Association Group (PAG) action of VCAP IS1 (which is the
134 # GOTO offload).
135 tc filter add dev $eth ingress chain $(IS2 0 0) pref 49152 \
136 flower skip_sw action goto chain $(IS2 1 0)
137}
138
139setup_prepare()
140{
141 ip link set $swp1 up
142 ip link set $swp2 up
143 ip link set $h2 up
144 ip link set $h1 up
145
146 create_tcam_skeleton $swp1
147
148 ip link add br0 type bridge
149 ip link set $swp1 master br0
150 ip link set $swp2 master br0
151 ip link set br0 up
152
153 ip link add link $h1 name $h1.100 type vlan id 100
154 ip link set $h1.100 up
155
156 ip link add link $h1 name $h1.200 type vlan id 200
157 ip link set $h1.200 up
158
159 tc filter add dev $swp1 ingress chain $(IS1 1) pref 1 \
160 protocol 802.1Q flower skip_sw vlan_id 100 \
161 action vlan pop \
162 action goto chain $(IS1 2)
163
164 tc filter add dev $swp1 egress chain $(ES0) pref 1 \
165 flower skip_sw indev $swp2 \
166 action vlan push protocol 802.1Q id 100
167
168 tc filter add dev $swp1 ingress chain $(IS1 0) pref 2 \
169 protocol ipv4 flower skip_sw src_ip 10.1.1.2 \
170 action skbedit priority 7 \
171 action goto chain $(IS1 1)
172
173 tc filter add dev $swp1 ingress chain $(IS2 0 0) pref 1 \
174 protocol ipv4 flower skip_sw ip_proto udp dst_port 5201 \
175 action police rate 50mbit burst 64k conform-exceed drop/pipe \
176 action goto chain $(IS2 1 0)
177}
178
179cleanup()
180{
181 ip link del $h1.200
182 ip link del $h1.100
183 tc qdisc del dev $swp1 clsact
184 ip link del br0
185}
186
187test_vlan_pop()
188{
189 local h1_mac=$(mac_get $h1)
190 local h2_mac=$(mac_get $h2)
191
192 RET=0
193
194 tcpdump_start $h2
195
196 # Work around Mausezahn VLAN builder bug
197 # (https://github.com/netsniff-ng/netsniff-ng/issues/225) by using
198 # an 8021q upper
199 $MZ $h1.100 -q -c 1 -p 64 -a $h1_mac -b $h2_mac -t ip
200
201 sleep 1
202
203 tcpdump_stop $h2
204
205 tcpdump_show $h2 | grep -q "$h1_mac > $h2_mac, ethertype IPv4"
206 check_err "$?" "untagged reception"
207
208 tcpdump_cleanup $h2
209
210 log_test "VLAN pop"
211}
212
213test_vlan_push()
214{
215 local h1_mac=$(mac_get $h1)
216 local h2_mac=$(mac_get $h2)
217
218 RET=0
219
220 tcpdump_start $h1.100
221
222 $MZ $h2 -q -c 1 -p 64 -a $h2_mac -b $h1_mac -t ip
223
224 sleep 1
225
226 tcpdump_stop $h1.100
227
228 tcpdump_show $h1.100 | grep -q "$h2_mac > $h1_mac"
229 check_err "$?" "tagged reception"
230
231 tcpdump_cleanup $h1.100
232
233 log_test "VLAN push"
234}
235
236test_vlan_ingress_modify()
237{
238 local h1_mac=$(mac_get $h1)
239 local h2_mac=$(mac_get $h2)
240
241 RET=0
242
243 ip link set br0 type bridge vlan_filtering 1
244 bridge vlan add dev $swp1 vid 200
245 bridge vlan add dev $swp1 vid 300
246 bridge vlan add dev $swp2 vid 300
247
248 tc filter add dev $swp1 ingress chain $(IS1 2) pref 3 \
249 protocol 802.1Q flower skip_sw vlan_id 200 src_mac $h1_mac \
250 action vlan modify id 300 \
251 action goto chain $(IS2 0 0)
252
253 tcpdump_start $h2
254
255 $MZ $h1.200 -q -c 1 -p 64 -a $h1_mac -b $h2_mac -t ip
256
257 sleep 1
258
259 tcpdump_stop $h2
260
261 tcpdump_show $h2 | grep -q "$h1_mac > $h2_mac, .* vlan 300"
262 check_err "$?" "tagged reception"
263
264 tcpdump_cleanup $h2
265
266 tc filter del dev $swp1 ingress chain $(IS1 2) pref 3
267
268 bridge vlan del dev $swp1 vid 200
269 bridge vlan del dev $swp1 vid 300
270 bridge vlan del dev $swp2 vid 300
271 ip link set br0 type bridge vlan_filtering 0
272
273 log_test "Ingress VLAN modification"
274}
275
276test_vlan_egress_modify()
277{
278 local h1_mac=$(mac_get $h1)
279 local h2_mac=$(mac_get $h2)
280
281 RET=0
282
283 tc qdisc add dev $swp2 clsact
284
285 ip link set br0 type bridge vlan_filtering 1
286 bridge vlan add dev $swp1 vid 200
287 bridge vlan add dev $swp2 vid 200
288
289 tc filter add dev $swp2 egress chain $(ES0) pref 3 \
290 protocol 802.1Q flower skip_sw vlan_id 200 vlan_prio 0 \
291 action vlan modify id 300 priority 7
292
293 tcpdump_start $h2
294
295 $MZ $h1.200 -q -c 1 -p 64 -a $h1_mac -b $h2_mac -t ip
296
297 sleep 1
298
299 tcpdump_stop $h2
300
301 tcpdump_show $h2 | grep -q "$h1_mac > $h2_mac, .* vlan 300"
302 check_err "$?" "tagged reception"
303
304 tcpdump_cleanup $h2
305
306 tc filter del dev $swp2 egress chain $(ES0) pref 3
307 tc qdisc del dev $swp2 clsact
308
309 bridge vlan del dev $swp1 vid 200
310 bridge vlan del dev $swp2 vid 200
311 ip link set br0 type bridge vlan_filtering 0
312
313 log_test "Egress VLAN modification"
314}
315
316test_skbedit_priority()
317{
318 local h1_mac=$(mac_get $h1)
319 local h2_mac=$(mac_get $h2)
320 local num_pkts=100
321
322 before=$(ethtool_stats_get $swp1 'rx_green_prio_7')
323
324 $MZ $h1 -q -c $num_pkts -p 64 -a $h1_mac -b $h2_mac -t ip -A 10.1.1.2
325
326 after=$(ethtool_stats_get $swp1 'rx_green_prio_7')
327
328 if [ $((after - before)) = $num_pkts ]; then
329 RET=0
330 else
331 RET=1
332 fi
333
334 log_test "Frame prioritization"
335}
336
337trap cleanup EXIT
338
339ALL_TESTS="
340 test_vlan_pop
341 test_vlan_push
342 test_vlan_ingress_modify
343 test_vlan_egress_modify
344 test_skbedit_priority
345"
346
347setup_prepare
348setup_wait
349
350tests_run
351
352exit $EXIT_STATUS