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Commit | Line | Data |
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f74599f7 TG |
1 | #!/bin/bash |
2 | ||
3 | # Uncomment to see generated bytecode | |
4 | #VERBOSE=verbose | |
5 | ||
6 | NS1=lwt_ns1 | |
7 | NS2=lwt_ns2 | |
8 | VETH0=tst_lwt1a | |
9 | VETH1=tst_lwt1b | |
10 | VETH2=tst_lwt2a | |
11 | VETH3=tst_lwt2b | |
12 | IPVETH0="192.168.254.1" | |
13 | IPVETH1="192.168.254.2" | |
14 | IPVETH1b="192.168.254.3" | |
15 | ||
16 | IPVETH2="192.168.111.1" | |
17 | IPVETH3="192.168.111.2" | |
18 | ||
19 | IP_LOCAL="192.168.99.1" | |
20 | ||
21 | TRACE_ROOT=/sys/kernel/debug/tracing | |
22 | ||
23 | function lookup_mac() | |
24 | { | |
25 | set +x | |
26 | if [ ! -z "$2" ]; then | |
27 | MAC=$(ip netns exec $2 ip link show $1 | grep ether | awk '{print $2}') | |
28 | else | |
29 | MAC=$(ip link show $1 | grep ether | awk '{print $2}') | |
30 | fi | |
31 | MAC="${MAC//:/}" | |
32 | echo "0x${MAC:10:2}${MAC:8:2}${MAC:6:2}${MAC:4:2}${MAC:2:2}${MAC:0:2}" | |
33 | set -x | |
34 | } | |
35 | ||
36 | function cleanup { | |
37 | set +ex | |
38 | rm test_lwt_bpf.o 2> /dev/null | |
39 | ip link del $VETH0 2> /dev/null | |
40 | ip link del $VETH1 2> /dev/null | |
41 | ip link del $VETH2 2> /dev/null | |
42 | ip link del $VETH3 2> /dev/null | |
43 | ip netns exec $NS1 killall netserver | |
44 | ip netns delete $NS1 2> /dev/null | |
45 | ip netns delete $NS2 2> /dev/null | |
46 | set -ex | |
47 | } | |
48 | ||
49 | function setup_one_veth { | |
50 | ip netns add $1 | |
51 | ip link add $2 type veth peer name $3 | |
52 | ip link set dev $2 up | |
53 | ip addr add $4/24 dev $2 | |
54 | ip link set $3 netns $1 | |
55 | ip netns exec $1 ip link set dev $3 up | |
56 | ip netns exec $1 ip addr add $5/24 dev $3 | |
57 | ||
58 | if [ "$6" ]; then | |
59 | ip netns exec $1 ip addr add $6/32 dev $3 | |
60 | fi | |
61 | } | |
62 | ||
63 | function get_trace { | |
64 | set +x | |
65 | cat ${TRACE_ROOT}/trace | grep -v '^#' | |
66 | set -x | |
67 | } | |
68 | ||
69 | function cleanup_routes { | |
70 | ip route del ${IPVETH1}/32 dev $VETH0 2> /dev/null || true | |
71 | ip route del table local local ${IP_LOCAL}/32 dev lo 2> /dev/null || true | |
72 | } | |
73 | ||
74 | function install_test { | |
75 | cleanup_routes | |
76 | cp /dev/null ${TRACE_ROOT}/trace | |
77 | ||
78 | OPTS="encap bpf headroom 14 $1 obj test_lwt_bpf.o section $2 $VERBOSE" | |
79 | ||
80 | if [ "$1" == "in" ]; then | |
81 | ip route add table local local ${IP_LOCAL}/32 $OPTS dev lo | |
82 | else | |
83 | ip route add ${IPVETH1}/32 $OPTS dev $VETH0 | |
84 | fi | |
85 | } | |
86 | ||
87 | function remove_prog { | |
88 | if [ "$1" == "in" ]; then | |
89 | ip route del table local local ${IP_LOCAL}/32 dev lo | |
90 | else | |
91 | ip route del ${IPVETH1}/32 dev $VETH0 | |
92 | fi | |
93 | } | |
94 | ||
95 | function filter_trace { | |
96 | # Add newline to allow starting EXPECT= variables on newline | |
97 | NL=$'\n' | |
98 | echo "${NL}$*" | sed -e 's/^.*: : //g' | |
99 | } | |
100 | ||
101 | function expect_fail { | |
102 | set +x | |
103 | echo "FAIL:" | |
104 | echo "Expected: $1" | |
105 | echo "Got: $2" | |
106 | set -x | |
107 | exit 1 | |
108 | } | |
109 | ||
110 | function match_trace { | |
111 | set +x | |
112 | RET=0 | |
113 | TRACE=$1 | |
114 | EXPECT=$2 | |
115 | GOT="$(filter_trace "$TRACE")" | |
116 | ||
117 | [ "$GOT" != "$EXPECT" ] && { | |
118 | expect_fail "$EXPECT" "$GOT" | |
119 | RET=1 | |
120 | } | |
121 | set -x | |
122 | return $RET | |
123 | } | |
124 | ||
125 | function test_start { | |
126 | set +x | |
127 | echo "----------------------------------------------------------------" | |
128 | echo "Starting test: $*" | |
129 | echo "----------------------------------------------------------------" | |
130 | set -x | |
131 | } | |
132 | ||
133 | function failure { | |
134 | get_trace | |
135 | echo "FAIL: $*" | |
136 | exit 1 | |
137 | } | |
138 | ||
139 | function test_ctx_xmit { | |
140 | test_start "test_ctx on lwt xmit" | |
141 | install_test xmit test_ctx | |
142 | ping -c 3 $IPVETH1 || { | |
143 | failure "test_ctx xmit: packets are dropped" | |
144 | } | |
145 | match_trace "$(get_trace)" " | |
146 | len 84 hash 0 protocol 8 | |
147 | cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX | |
148 | len 84 hash 0 protocol 8 | |
149 | cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX | |
150 | len 84 hash 0 protocol 8 | |
151 | cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX" || exit 1 | |
152 | remove_prog xmit | |
153 | } | |
154 | ||
155 | function test_ctx_out { | |
156 | test_start "test_ctx on lwt out" | |
157 | install_test out test_ctx | |
158 | ping -c 3 $IPVETH1 || { | |
159 | failure "test_ctx out: packets are dropped" | |
160 | } | |
161 | match_trace "$(get_trace)" " | |
162 | len 84 hash 0 protocol 0 | |
163 | cb 1234 ingress_ifindex 0 ifindex 0 | |
164 | len 84 hash 0 protocol 0 | |
165 | cb 1234 ingress_ifindex 0 ifindex 0 | |
166 | len 84 hash 0 protocol 0 | |
167 | cb 1234 ingress_ifindex 0 ifindex 0" || exit 1 | |
168 | remove_prog out | |
169 | } | |
170 | ||
171 | function test_ctx_in { | |
172 | test_start "test_ctx on lwt in" | |
173 | install_test in test_ctx | |
174 | ping -c 3 $IP_LOCAL || { | |
175 | failure "test_ctx out: packets are dropped" | |
176 | } | |
177 | # We will both request & reply packets as the packets will | |
178 | # be from $IP_LOCAL => $IP_LOCAL | |
179 | match_trace "$(get_trace)" " | |
180 | len 84 hash 0 protocol 8 | |
181 | cb 1234 ingress_ifindex 1 ifindex 1 | |
182 | len 84 hash 0 protocol 8 | |
183 | cb 1234 ingress_ifindex 1 ifindex 1 | |
184 | len 84 hash 0 protocol 8 | |
185 | cb 1234 ingress_ifindex 1 ifindex 1 | |
186 | len 84 hash 0 protocol 8 | |
187 | cb 1234 ingress_ifindex 1 ifindex 1 | |
188 | len 84 hash 0 protocol 8 | |
189 | cb 1234 ingress_ifindex 1 ifindex 1 | |
190 | len 84 hash 0 protocol 8 | |
191 | cb 1234 ingress_ifindex 1 ifindex 1" || exit 1 | |
192 | remove_prog in | |
193 | } | |
194 | ||
195 | function test_data { | |
196 | test_start "test_data on lwt $1" | |
197 | install_test $1 test_data | |
198 | ping -c 3 $IPVETH1 || { | |
199 | failure "test_data ${1}: packets are dropped" | |
200 | } | |
201 | match_trace "$(get_trace)" " | |
202 | src: 1fea8c0 dst: 2fea8c0 | |
203 | src: 1fea8c0 dst: 2fea8c0 | |
204 | src: 1fea8c0 dst: 2fea8c0" || exit 1 | |
205 | remove_prog $1 | |
206 | } | |
207 | ||
208 | function test_data_in { | |
209 | test_start "test_data on lwt in" | |
210 | install_test in test_data | |
211 | ping -c 3 $IP_LOCAL || { | |
212 | failure "test_data in: packets are dropped" | |
213 | } | |
214 | # We will both request & reply packets as the packets will | |
215 | # be from $IP_LOCAL => $IP_LOCAL | |
216 | match_trace "$(get_trace)" " | |
217 | src: 163a8c0 dst: 163a8c0 | |
218 | src: 163a8c0 dst: 163a8c0 | |
219 | src: 163a8c0 dst: 163a8c0 | |
220 | src: 163a8c0 dst: 163a8c0 | |
221 | src: 163a8c0 dst: 163a8c0 | |
222 | src: 163a8c0 dst: 163a8c0" || exit 1 | |
223 | remove_prog in | |
224 | } | |
225 | ||
226 | function test_cb { | |
227 | test_start "test_cb on lwt $1" | |
228 | install_test $1 test_cb | |
229 | ping -c 3 $IPVETH1 || { | |
230 | failure "test_cb ${1}: packets are dropped" | |
231 | } | |
232 | match_trace "$(get_trace)" " | |
233 | cb0: 0 cb1: 0 cb2: 0 | |
234 | cb3: 0 cb4: 0 | |
235 | cb0: 0 cb1: 0 cb2: 0 | |
236 | cb3: 0 cb4: 0 | |
237 | cb0: 0 cb1: 0 cb2: 0 | |
238 | cb3: 0 cb4: 0" || exit 1 | |
239 | remove_prog $1 | |
240 | } | |
241 | ||
242 | function test_cb_in { | |
243 | test_start "test_cb on lwt in" | |
244 | install_test in test_cb | |
245 | ping -c 3 $IP_LOCAL || { | |
246 | failure "test_cb in: packets are dropped" | |
247 | } | |
248 | # We will both request & reply packets as the packets will | |
249 | # be from $IP_LOCAL => $IP_LOCAL | |
250 | match_trace "$(get_trace)" " | |
251 | cb0: 0 cb1: 0 cb2: 0 | |
252 | cb3: 0 cb4: 0 | |
253 | cb0: 0 cb1: 0 cb2: 0 | |
254 | cb3: 0 cb4: 0 | |
255 | cb0: 0 cb1: 0 cb2: 0 | |
256 | cb3: 0 cb4: 0 | |
257 | cb0: 0 cb1: 0 cb2: 0 | |
258 | cb3: 0 cb4: 0 | |
259 | cb0: 0 cb1: 0 cb2: 0 | |
260 | cb3: 0 cb4: 0 | |
261 | cb0: 0 cb1: 0 cb2: 0 | |
262 | cb3: 0 cb4: 0" || exit 1 | |
263 | remove_prog in | |
264 | } | |
265 | ||
266 | function test_drop_all { | |
267 | test_start "test_drop_all on lwt $1" | |
268 | install_test $1 drop_all | |
269 | ping -c 3 $IPVETH1 && { | |
270 | failure "test_drop_all ${1}: Unexpected success of ping" | |
271 | } | |
272 | match_trace "$(get_trace)" " | |
273 | dropping with: 2 | |
274 | dropping with: 2 | |
275 | dropping with: 2" || exit 1 | |
276 | remove_prog $1 | |
277 | } | |
278 | ||
279 | function test_drop_all_in { | |
280 | test_start "test_drop_all on lwt in" | |
281 | install_test in drop_all | |
282 | ping -c 3 $IP_LOCAL && { | |
283 | failure "test_drop_all in: Unexpected success of ping" | |
284 | } | |
285 | match_trace "$(get_trace)" " | |
286 | dropping with: 2 | |
287 | dropping with: 2 | |
288 | dropping with: 2" || exit 1 | |
289 | remove_prog in | |
290 | } | |
291 | ||
292 | function test_push_ll_and_redirect { | |
293 | test_start "test_push_ll_and_redirect on lwt xmit" | |
294 | install_test xmit push_ll_and_redirect | |
295 | ping -c 3 $IPVETH1 || { | |
296 | failure "Redirected packets appear to be dropped" | |
297 | } | |
298 | match_trace "$(get_trace)" " | |
299 | redirected to $DST_IFINDEX | |
300 | redirected to $DST_IFINDEX | |
301 | redirected to $DST_IFINDEX" || exit 1 | |
302 | remove_prog xmit | |
303 | } | |
304 | ||
305 | function test_no_l2_and_redirect { | |
306 | test_start "test_no_l2_and_redirect on lwt xmit" | |
307 | install_test xmit fill_garbage_and_redirect | |
308 | ping -c 3 $IPVETH1 && { | |
309 | failure "Unexpected success despite lack of L2 header" | |
310 | } | |
311 | match_trace "$(get_trace)" " | |
312 | redirected to $DST_IFINDEX | |
313 | redirected to $DST_IFINDEX | |
314 | redirected to $DST_IFINDEX" || exit 1 | |
315 | remove_prog xmit | |
316 | } | |
317 | ||
318 | function test_rewrite { | |
319 | test_start "test_rewrite on lwt xmit" | |
320 | install_test xmit test_rewrite | |
321 | ping -c 3 $IPVETH1 || { | |
322 | failure "Rewritten packets appear to be dropped" | |
323 | } | |
324 | match_trace "$(get_trace)" " | |
325 | out: rewriting from 2fea8c0 to 3fea8c0 | |
326 | out: rewriting from 2fea8c0 to 3fea8c0 | |
327 | out: rewriting from 2fea8c0 to 3fea8c0" || exit 1 | |
328 | remove_prog out | |
329 | } | |
330 | ||
331 | function test_fill_garbage { | |
332 | test_start "test_fill_garbage on lwt xmit" | |
333 | install_test xmit fill_garbage | |
334 | ping -c 3 $IPVETH1 && { | |
335 | failure "test_drop_all ${1}: Unexpected success of ping" | |
336 | } | |
337 | match_trace "$(get_trace)" " | |
338 | Set initial 96 bytes of header to FF | |
339 | Set initial 96 bytes of header to FF | |
340 | Set initial 96 bytes of header to FF" || exit 1 | |
341 | remove_prog xmit | |
342 | } | |
343 | ||
344 | function test_netperf_nop { | |
345 | test_start "test_netperf_nop on lwt xmit" | |
346 | install_test xmit nop | |
347 | netperf -H $IPVETH1 -t TCP_STREAM || { | |
348 | failure "packets appear to be dropped" | |
349 | } | |
350 | match_trace "$(get_trace)" ""|| exit 1 | |
351 | remove_prog xmit | |
352 | } | |
353 | ||
354 | function test_netperf_redirect { | |
355 | test_start "test_netperf_redirect on lwt xmit" | |
356 | install_test xmit push_ll_and_redirect_silent | |
357 | netperf -H $IPVETH1 -t TCP_STREAM || { | |
358 | failure "Rewritten packets appear to be dropped" | |
359 | } | |
360 | match_trace "$(get_trace)" ""|| exit 1 | |
361 | remove_prog xmit | |
362 | } | |
363 | ||
364 | cleanup | |
365 | setup_one_veth $NS1 $VETH0 $VETH1 $IPVETH0 $IPVETH1 $IPVETH1b | |
366 | setup_one_veth $NS2 $VETH2 $VETH3 $IPVETH2 $IPVETH3 | |
367 | ip netns exec $NS1 netserver | |
368 | echo 1 > ${TRACE_ROOT}/tracing_on | |
369 | ||
370 | DST_MAC=$(lookup_mac $VETH1 $NS1) | |
371 | SRC_MAC=$(lookup_mac $VETH0) | |
372 | DST_IFINDEX=$(cat /sys/class/net/$VETH0/ifindex) | |
373 | ||
374 | CLANG_OPTS="-O2 -target bpf -I ../include/" | |
375 | CLANG_OPTS+=" -DSRC_MAC=$SRC_MAC -DDST_MAC=$DST_MAC -DDST_IFINDEX=$DST_IFINDEX" | |
376 | clang $CLANG_OPTS -c test_lwt_bpf.c -o test_lwt_bpf.o | |
377 | ||
378 | test_ctx_xmit | |
379 | test_ctx_out | |
380 | test_ctx_in | |
381 | test_data "xmit" | |
382 | test_data "out" | |
383 | test_data_in | |
384 | test_cb "xmit" | |
385 | test_cb "out" | |
386 | test_cb_in | |
387 | test_drop_all "xmit" | |
388 | test_drop_all "out" | |
389 | test_drop_all_in | |
390 | test_rewrite | |
391 | test_push_ll_and_redirect | |
392 | test_no_l2_and_redirect | |
393 | test_fill_garbage | |
394 | test_netperf_nop | |
395 | test_netperf_redirect | |
396 | ||
397 | cleanup | |
398 | echo 0 > ${TRACE_ROOT}/tracing_on | |
399 | exit 0 |