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1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4# Uncomment to see generated bytecode
5#VERBOSE=verbose
6
7NS1=lwt_ns1
8NS2=lwt_ns2
9VETH0=tst_lwt1a
10VETH1=tst_lwt1b
11VETH2=tst_lwt2a
12VETH3=tst_lwt2b
13IPVETH0="192.168.254.1"
14IPVETH1="192.168.254.2"
15IPVETH1b="192.168.254.3"
16
17IPVETH2="192.168.111.1"
18IPVETH3="192.168.111.2"
19
20IP_LOCAL="192.168.99.1"
21
22PROG_SRC="test_lwt_bpf.c"
23BPF_PROG="test_lwt_bpf.o"
24TRACE_ROOT=/sys/kernel/tracing
25CONTEXT_INFO=$(cat ${TRACE_ROOT}/trace_options | grep context)
26
27function lookup_mac()
28{
29 set +x
30 if [ ! -z "$2" ]; then
31 MAC=$(ip netns exec $2 ip link show $1 | grep ether | awk '{print $2}')
32 else
33 MAC=$(ip link show $1 | grep ether | awk '{print $2}')
34 fi
35 MAC="${MAC//:/}"
36 echo "0x${MAC:10:2}${MAC:8:2}${MAC:6:2}${MAC:4:2}${MAC:2:2}${MAC:0:2}"
37 set -x
38}
39
40function cleanup {
41 set +ex
42 rm $BPF_PROG 2> /dev/null
43 ip link del $VETH0 2> /dev/null
44 ip link del $VETH1 2> /dev/null
45 ip link del $VETH2 2> /dev/null
46 ip link del $VETH3 2> /dev/null
47 ip netns exec $NS1 killall netserver
48 ip netns delete $NS1 2> /dev/null
49 ip netns delete $NS2 2> /dev/null
50 set -ex
51}
52
53function setup_one_veth {
54 ip netns add $1
55 ip link add $2 type veth peer name $3
56 ip link set dev $2 up
57 ip addr add $4/24 dev $2
58 ip link set $3 netns $1
59 ip netns exec $1 ip link set dev $3 up
60 ip netns exec $1 ip addr add $5/24 dev $3
61
62 if [ "$6" ]; then
63 ip netns exec $1 ip addr add $6/32 dev $3
64 fi
65}
66
67function get_trace {
68 set +x
69 cat ${TRACE_ROOT}/trace | grep -v '^#'
70 set -x
71}
72
73function cleanup_routes {
74 ip route del ${IPVETH1}/32 dev $VETH0 2> /dev/null || true
75 ip route del table local local ${IP_LOCAL}/32 dev lo 2> /dev/null || true
76}
77
78function install_test {
79 cleanup_routes
80 cp /dev/null ${TRACE_ROOT}/trace
81
82 OPTS="encap bpf headroom 14 $1 obj $BPF_PROG section $2 $VERBOSE"
83
84 if [ "$1" == "in" ]; then
85 ip route add table local local ${IP_LOCAL}/32 $OPTS dev lo
86 else
87 ip route add ${IPVETH1}/32 $OPTS dev $VETH0
88 fi
89}
90
91function remove_prog {
92 if [ "$1" == "in" ]; then
93 ip route del table local local ${IP_LOCAL}/32 dev lo
94 else
95 ip route del ${IPVETH1}/32 dev $VETH0
96 fi
97}
98
99function filter_trace {
100 # Add newline to allow starting EXPECT= variables on newline
101 NL=$'\n'
102 echo "${NL}$*" | sed -e 's/bpf_trace_printk: //g'
103}
104
105function expect_fail {
106 set +x
107 echo "FAIL:"
108 echo "Expected: $1"
109 echo "Got: $2"
110 set -x
111 exit 1
112}
113
114function match_trace {
115 set +x
116 RET=0
117 TRACE=$1
118 EXPECT=$2
119 GOT="$(filter_trace "$TRACE")"
120
121 [ "$GOT" != "$EXPECT" ] && {
122 expect_fail "$EXPECT" "$GOT"
123 RET=1
124 }
125 set -x
126 return $RET
127}
128
129function test_start {
130 set +x
131 echo "----------------------------------------------------------------"
132 echo "Starting test: $*"
133 echo "----------------------------------------------------------------"
134 set -x
135}
136
137function failure {
138 get_trace
139 echo "FAIL: $*"
140 exit 1
141}
142
143function test_ctx_xmit {
144 test_start "test_ctx on lwt xmit"
145 install_test xmit test_ctx
146 ping -c 3 $IPVETH1 || {
147 failure "test_ctx xmit: packets are dropped"
148 }
149 match_trace "$(get_trace)" "
150len 84 hash 0 protocol 8
151cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX
152len 84 hash 0 protocol 8
153cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX
154len 84 hash 0 protocol 8
155cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX" || exit 1
156 remove_prog xmit
157}
158
159function test_ctx_out {
160 test_start "test_ctx on lwt out"
161 install_test out test_ctx
162 ping -c 3 $IPVETH1 || {
163 failure "test_ctx out: packets are dropped"
164 }
165 match_trace "$(get_trace)" "
166len 84 hash 0 protocol 8
167cb 1234 ingress_ifindex 0 ifindex 0
168len 84 hash 0 protocol 8
169cb 1234 ingress_ifindex 0 ifindex 0
170len 84 hash 0 protocol 8
171cb 1234 ingress_ifindex 0 ifindex 0" || exit 1
172 remove_prog out
173}
174
175function test_ctx_in {
176 test_start "test_ctx on lwt in"
177 install_test in test_ctx
178 ping -c 3 $IP_LOCAL || {
179 failure "test_ctx out: packets are dropped"
180 }
181 # We will both request & reply packets as the packets will
182 # be from $IP_LOCAL => $IP_LOCAL
183 match_trace "$(get_trace)" "
184len 84 hash 0 protocol 8
185cb 1234 ingress_ifindex 1 ifindex 1
186len 84 hash 0 protocol 8
187cb 1234 ingress_ifindex 1 ifindex 1
188len 84 hash 0 protocol 8
189cb 1234 ingress_ifindex 1 ifindex 1
190len 84 hash 0 protocol 8
191cb 1234 ingress_ifindex 1 ifindex 1
192len 84 hash 0 protocol 8
193cb 1234 ingress_ifindex 1 ifindex 1
194len 84 hash 0 protocol 8
195cb 1234 ingress_ifindex 1 ifindex 1" || exit 1
196 remove_prog in
197}
198
199function test_data {
200 test_start "test_data on lwt $1"
201 install_test $1 test_data
202 ping -c 3 $IPVETH1 || {
203 failure "test_data ${1}: packets are dropped"
204 }
205 match_trace "$(get_trace)" "
206src: 1fea8c0 dst: 2fea8c0
207src: 1fea8c0 dst: 2fea8c0
208src: 1fea8c0 dst: 2fea8c0" || exit 1
209 remove_prog $1
210}
211
212function test_data_in {
213 test_start "test_data on lwt in"
214 install_test in test_data
215 ping -c 3 $IP_LOCAL || {
216 failure "test_data in: packets are dropped"
217 }
218 # We will both request & reply packets as the packets will
219 # be from $IP_LOCAL => $IP_LOCAL
220 match_trace "$(get_trace)" "
221src: 163a8c0 dst: 163a8c0
222src: 163a8c0 dst: 163a8c0
223src: 163a8c0 dst: 163a8c0
224src: 163a8c0 dst: 163a8c0
225src: 163a8c0 dst: 163a8c0
226src: 163a8c0 dst: 163a8c0" || exit 1
227 remove_prog in
228}
229
230function test_cb {
231 test_start "test_cb on lwt $1"
232 install_test $1 test_cb
233 ping -c 3 $IPVETH1 || {
234 failure "test_cb ${1}: packets are dropped"
235 }
236 match_trace "$(get_trace)" "
237cb0: 0 cb1: 0 cb2: 0
238cb3: 0 cb4: 0
239cb0: 0 cb1: 0 cb2: 0
240cb3: 0 cb4: 0
241cb0: 0 cb1: 0 cb2: 0
242cb3: 0 cb4: 0" || exit 1
243 remove_prog $1
244}
245
246function test_cb_in {
247 test_start "test_cb on lwt in"
248 install_test in test_cb
249 ping -c 3 $IP_LOCAL || {
250 failure "test_cb in: packets are dropped"
251 }
252 # We will both request & reply packets as the packets will
253 # be from $IP_LOCAL => $IP_LOCAL
254 match_trace "$(get_trace)" "
255cb0: 0 cb1: 0 cb2: 0
256cb3: 0 cb4: 0
257cb0: 0 cb1: 0 cb2: 0
258cb3: 0 cb4: 0
259cb0: 0 cb1: 0 cb2: 0
260cb3: 0 cb4: 0
261cb0: 0 cb1: 0 cb2: 0
262cb3: 0 cb4: 0
263cb0: 0 cb1: 0 cb2: 0
264cb3: 0 cb4: 0
265cb0: 0 cb1: 0 cb2: 0
266cb3: 0 cb4: 0" || exit 1
267 remove_prog in
268}
269
270function test_drop_all {
271 test_start "test_drop_all on lwt $1"
272 install_test $1 drop_all
273 ping -c 3 $IPVETH1 && {
274 failure "test_drop_all ${1}: Unexpected success of ping"
275 }
276 match_trace "$(get_trace)" "
277dropping with: 2
278dropping with: 2
279dropping with: 2" || exit 1
280 remove_prog $1
281}
282
283function test_drop_all_in {
284 test_start "test_drop_all on lwt in"
285 install_test in drop_all
286 ping -c 3 $IP_LOCAL && {
287 failure "test_drop_all in: Unexpected success of ping"
288 }
289 match_trace "$(get_trace)" "
290dropping with: 2
291dropping with: 2
292dropping with: 2" || exit 1
293 remove_prog in
294}
295
296function test_push_ll_and_redirect {
297 test_start "test_push_ll_and_redirect on lwt xmit"
298 install_test xmit push_ll_and_redirect
299 ping -c 3 $IPVETH1 || {
300 failure "Redirected packets appear to be dropped"
301 }
302 match_trace "$(get_trace)" "
303redirected to $DST_IFINDEX
304redirected to $DST_IFINDEX
305redirected to $DST_IFINDEX" || exit 1
306 remove_prog xmit
307}
308
309function test_no_l2_and_redirect {
310 test_start "test_no_l2_and_redirect on lwt xmit"
311 install_test xmit fill_garbage_and_redirect
312 ping -c 3 $IPVETH1 && {
313 failure "Unexpected success despite lack of L2 header"
314 }
315 match_trace "$(get_trace)" "
316redirected to $DST_IFINDEX
317redirected to $DST_IFINDEX
318redirected to $DST_IFINDEX" || exit 1
319 remove_prog xmit
320}
321
322function test_rewrite {
323 test_start "test_rewrite on lwt xmit"
324 install_test xmit test_rewrite
325 ping -c 3 $IPVETH1 || {
326 failure "Rewritten packets appear to be dropped"
327 }
328 match_trace "$(get_trace)" "
329out: rewriting from 2fea8c0 to 3fea8c0
330out: rewriting from 2fea8c0 to 3fea8c0
331out: rewriting from 2fea8c0 to 3fea8c0" || exit 1
332 remove_prog out
333}
334
335function test_fill_garbage {
336 test_start "test_fill_garbage on lwt xmit"
337 install_test xmit fill_garbage
338 ping -c 3 $IPVETH1 && {
339 failure "test_drop_all ${1}: Unexpected success of ping"
340 }
341 match_trace "$(get_trace)" "
342Set initial 96 bytes of header to FF
343Set initial 96 bytes of header to FF
344Set initial 96 bytes of header to FF" || exit 1
345 remove_prog xmit
346}
347
348function test_netperf_nop {
349 test_start "test_netperf_nop on lwt xmit"
350 install_test xmit nop
351 netperf -H $IPVETH1 -t TCP_STREAM || {
352 failure "packets appear to be dropped"
353 }
354 match_trace "$(get_trace)" ""|| exit 1
355 remove_prog xmit
356}
357
358function test_netperf_redirect {
359 test_start "test_netperf_redirect on lwt xmit"
360 install_test xmit push_ll_and_redirect_silent
361 netperf -H $IPVETH1 -t TCP_STREAM || {
362 failure "Rewritten packets appear to be dropped"
363 }
364 match_trace "$(get_trace)" ""|| exit 1
365 remove_prog xmit
366}
367
368cleanup
369setup_one_veth $NS1 $VETH0 $VETH1 $IPVETH0 $IPVETH1 $IPVETH1b
370setup_one_veth $NS2 $VETH2 $VETH3 $IPVETH2 $IPVETH3
371ip netns exec $NS1 netserver
372echo 1 > ${TRACE_ROOT}/tracing_on
373echo nocontext-info > ${TRACE_ROOT}/trace_options
374
375DST_MAC=$(lookup_mac $VETH1 $NS1)
376SRC_MAC=$(lookup_mac $VETH0)
377DST_IFINDEX=$(cat /sys/class/net/$VETH0/ifindex)
378
379CLANG_OPTS="-O2 --target=bpf -I ../include/"
380CLANG_OPTS+=" -DSRC_MAC=$SRC_MAC -DDST_MAC=$DST_MAC -DDST_IFINDEX=$DST_IFINDEX"
381clang $CLANG_OPTS -c $PROG_SRC -o $BPF_PROG
382
383test_ctx_xmit
384test_ctx_out
385test_ctx_in
386test_data "xmit"
387test_data "out"
388test_data_in
389test_cb "xmit"
390test_cb "out"
391test_cb_in
392test_drop_all "xmit"
393test_drop_all "out"
394test_drop_all_in
395test_rewrite
396test_push_ll_and_redirect
397test_no_l2_and_redirect
398test_fill_garbage
399test_netperf_nop
400test_netperf_redirect
401
402cleanup
403echo 0 > ${TRACE_ROOT}/tracing_on
404echo $CONTEXT_INFO > ${TRACE_ROOT}/trace_options
405exit 0
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4# Uncomment to see generated bytecode
5#VERBOSE=verbose
6
7NS1=lwt_ns1
8NS2=lwt_ns2
9VETH0=tst_lwt1a
10VETH1=tst_lwt1b
11VETH2=tst_lwt2a
12VETH3=tst_lwt2b
13IPVETH0="192.168.254.1"
14IPVETH1="192.168.254.2"
15IPVETH1b="192.168.254.3"
16
17IPVETH2="192.168.111.1"
18IPVETH3="192.168.111.2"
19
20IP_LOCAL="192.168.99.1"
21
22TRACE_ROOT=/sys/kernel/debug/tracing
23
24function lookup_mac()
25{
26 set +x
27 if [ ! -z "$2" ]; then
28 MAC=$(ip netns exec $2 ip link show $1 | grep ether | awk '{print $2}')
29 else
30 MAC=$(ip link show $1 | grep ether | awk '{print $2}')
31 fi
32 MAC="${MAC//:/}"
33 echo "0x${MAC:10:2}${MAC:8:2}${MAC:6:2}${MAC:4:2}${MAC:2:2}${MAC:0:2}"
34 set -x
35}
36
37function cleanup {
38 set +ex
39 rm test_lwt_bpf.o 2> /dev/null
40 ip link del $VETH0 2> /dev/null
41 ip link del $VETH1 2> /dev/null
42 ip link del $VETH2 2> /dev/null
43 ip link del $VETH3 2> /dev/null
44 ip netns exec $NS1 killall netserver
45 ip netns delete $NS1 2> /dev/null
46 ip netns delete $NS2 2> /dev/null
47 set -ex
48}
49
50function setup_one_veth {
51 ip netns add $1
52 ip link add $2 type veth peer name $3
53 ip link set dev $2 up
54 ip addr add $4/24 dev $2
55 ip link set $3 netns $1
56 ip netns exec $1 ip link set dev $3 up
57 ip netns exec $1 ip addr add $5/24 dev $3
58
59 if [ "$6" ]; then
60 ip netns exec $1 ip addr add $6/32 dev $3
61 fi
62}
63
64function get_trace {
65 set +x
66 cat ${TRACE_ROOT}/trace | grep -v '^#'
67 set -x
68}
69
70function cleanup_routes {
71 ip route del ${IPVETH1}/32 dev $VETH0 2> /dev/null || true
72 ip route del table local local ${IP_LOCAL}/32 dev lo 2> /dev/null || true
73}
74
75function install_test {
76 cleanup_routes
77 cp /dev/null ${TRACE_ROOT}/trace
78
79 OPTS="encap bpf headroom 14 $1 obj test_lwt_bpf.o section $2 $VERBOSE"
80
81 if [ "$1" == "in" ]; then
82 ip route add table local local ${IP_LOCAL}/32 $OPTS dev lo
83 else
84 ip route add ${IPVETH1}/32 $OPTS dev $VETH0
85 fi
86}
87
88function remove_prog {
89 if [ "$1" == "in" ]; then
90 ip route del table local local ${IP_LOCAL}/32 dev lo
91 else
92 ip route del ${IPVETH1}/32 dev $VETH0
93 fi
94}
95
96function filter_trace {
97 # Add newline to allow starting EXPECT= variables on newline
98 NL=$'\n'
99 echo "${NL}$*" | sed -e 's/^.*: : //g'
100}
101
102function expect_fail {
103 set +x
104 echo "FAIL:"
105 echo "Expected: $1"
106 echo "Got: $2"
107 set -x
108 exit 1
109}
110
111function match_trace {
112 set +x
113 RET=0
114 TRACE=$1
115 EXPECT=$2
116 GOT="$(filter_trace "$TRACE")"
117
118 [ "$GOT" != "$EXPECT" ] && {
119 expect_fail "$EXPECT" "$GOT"
120 RET=1
121 }
122 set -x
123 return $RET
124}
125
126function test_start {
127 set +x
128 echo "----------------------------------------------------------------"
129 echo "Starting test: $*"
130 echo "----------------------------------------------------------------"
131 set -x
132}
133
134function failure {
135 get_trace
136 echo "FAIL: $*"
137 exit 1
138}
139
140function test_ctx_xmit {
141 test_start "test_ctx on lwt xmit"
142 install_test xmit test_ctx
143 ping -c 3 $IPVETH1 || {
144 failure "test_ctx xmit: packets are dropped"
145 }
146 match_trace "$(get_trace)" "
147len 84 hash 0 protocol 8
148cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX
149len 84 hash 0 protocol 8
150cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX
151len 84 hash 0 protocol 8
152cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX" || exit 1
153 remove_prog xmit
154}
155
156function test_ctx_out {
157 test_start "test_ctx on lwt out"
158 install_test out test_ctx
159 ping -c 3 $IPVETH1 || {
160 failure "test_ctx out: packets are dropped"
161 }
162 match_trace "$(get_trace)" "
163len 84 hash 0 protocol 0
164cb 1234 ingress_ifindex 0 ifindex 0
165len 84 hash 0 protocol 0
166cb 1234 ingress_ifindex 0 ifindex 0
167len 84 hash 0 protocol 0
168cb 1234 ingress_ifindex 0 ifindex 0" || exit 1
169 remove_prog out
170}
171
172function test_ctx_in {
173 test_start "test_ctx on lwt in"
174 install_test in test_ctx
175 ping -c 3 $IP_LOCAL || {
176 failure "test_ctx out: packets are dropped"
177 }
178 # We will both request & reply packets as the packets will
179 # be from $IP_LOCAL => $IP_LOCAL
180 match_trace "$(get_trace)" "
181len 84 hash 0 protocol 8
182cb 1234 ingress_ifindex 1 ifindex 1
183len 84 hash 0 protocol 8
184cb 1234 ingress_ifindex 1 ifindex 1
185len 84 hash 0 protocol 8
186cb 1234 ingress_ifindex 1 ifindex 1
187len 84 hash 0 protocol 8
188cb 1234 ingress_ifindex 1 ifindex 1
189len 84 hash 0 protocol 8
190cb 1234 ingress_ifindex 1 ifindex 1
191len 84 hash 0 protocol 8
192cb 1234 ingress_ifindex 1 ifindex 1" || exit 1
193 remove_prog in
194}
195
196function test_data {
197 test_start "test_data on lwt $1"
198 install_test $1 test_data
199 ping -c 3 $IPVETH1 || {
200 failure "test_data ${1}: packets are dropped"
201 }
202 match_trace "$(get_trace)" "
203src: 1fea8c0 dst: 2fea8c0
204src: 1fea8c0 dst: 2fea8c0
205src: 1fea8c0 dst: 2fea8c0" || exit 1
206 remove_prog $1
207}
208
209function test_data_in {
210 test_start "test_data on lwt in"
211 install_test in test_data
212 ping -c 3 $IP_LOCAL || {
213 failure "test_data in: packets are dropped"
214 }
215 # We will both request & reply packets as the packets will
216 # be from $IP_LOCAL => $IP_LOCAL
217 match_trace "$(get_trace)" "
218src: 163a8c0 dst: 163a8c0
219src: 163a8c0 dst: 163a8c0
220src: 163a8c0 dst: 163a8c0
221src: 163a8c0 dst: 163a8c0
222src: 163a8c0 dst: 163a8c0
223src: 163a8c0 dst: 163a8c0" || exit 1
224 remove_prog in
225}
226
227function test_cb {
228 test_start "test_cb on lwt $1"
229 install_test $1 test_cb
230 ping -c 3 $IPVETH1 || {
231 failure "test_cb ${1}: packets are dropped"
232 }
233 match_trace "$(get_trace)" "
234cb0: 0 cb1: 0 cb2: 0
235cb3: 0 cb4: 0
236cb0: 0 cb1: 0 cb2: 0
237cb3: 0 cb4: 0
238cb0: 0 cb1: 0 cb2: 0
239cb3: 0 cb4: 0" || exit 1
240 remove_prog $1
241}
242
243function test_cb_in {
244 test_start "test_cb on lwt in"
245 install_test in test_cb
246 ping -c 3 $IP_LOCAL || {
247 failure "test_cb in: packets are dropped"
248 }
249 # We will both request & reply packets as the packets will
250 # be from $IP_LOCAL => $IP_LOCAL
251 match_trace "$(get_trace)" "
252cb0: 0 cb1: 0 cb2: 0
253cb3: 0 cb4: 0
254cb0: 0 cb1: 0 cb2: 0
255cb3: 0 cb4: 0
256cb0: 0 cb1: 0 cb2: 0
257cb3: 0 cb4: 0
258cb0: 0 cb1: 0 cb2: 0
259cb3: 0 cb4: 0
260cb0: 0 cb1: 0 cb2: 0
261cb3: 0 cb4: 0
262cb0: 0 cb1: 0 cb2: 0
263cb3: 0 cb4: 0" || exit 1
264 remove_prog in
265}
266
267function test_drop_all {
268 test_start "test_drop_all on lwt $1"
269 install_test $1 drop_all
270 ping -c 3 $IPVETH1 && {
271 failure "test_drop_all ${1}: Unexpected success of ping"
272 }
273 match_trace "$(get_trace)" "
274dropping with: 2
275dropping with: 2
276dropping with: 2" || exit 1
277 remove_prog $1
278}
279
280function test_drop_all_in {
281 test_start "test_drop_all on lwt in"
282 install_test in drop_all
283 ping -c 3 $IP_LOCAL && {
284 failure "test_drop_all in: Unexpected success of ping"
285 }
286 match_trace "$(get_trace)" "
287dropping with: 2
288dropping with: 2
289dropping with: 2" || exit 1
290 remove_prog in
291}
292
293function test_push_ll_and_redirect {
294 test_start "test_push_ll_and_redirect on lwt xmit"
295 install_test xmit push_ll_and_redirect
296 ping -c 3 $IPVETH1 || {
297 failure "Redirected packets appear to be dropped"
298 }
299 match_trace "$(get_trace)" "
300redirected to $DST_IFINDEX
301redirected to $DST_IFINDEX
302redirected to $DST_IFINDEX" || exit 1
303 remove_prog xmit
304}
305
306function test_no_l2_and_redirect {
307 test_start "test_no_l2_and_redirect on lwt xmit"
308 install_test xmit fill_garbage_and_redirect
309 ping -c 3 $IPVETH1 && {
310 failure "Unexpected success despite lack of L2 header"
311 }
312 match_trace "$(get_trace)" "
313redirected to $DST_IFINDEX
314redirected to $DST_IFINDEX
315redirected to $DST_IFINDEX" || exit 1
316 remove_prog xmit
317}
318
319function test_rewrite {
320 test_start "test_rewrite on lwt xmit"
321 install_test xmit test_rewrite
322 ping -c 3 $IPVETH1 || {
323 failure "Rewritten packets appear to be dropped"
324 }
325 match_trace "$(get_trace)" "
326out: rewriting from 2fea8c0 to 3fea8c0
327out: rewriting from 2fea8c0 to 3fea8c0
328out: rewriting from 2fea8c0 to 3fea8c0" || exit 1
329 remove_prog out
330}
331
332function test_fill_garbage {
333 test_start "test_fill_garbage on lwt xmit"
334 install_test xmit fill_garbage
335 ping -c 3 $IPVETH1 && {
336 failure "test_drop_all ${1}: Unexpected success of ping"
337 }
338 match_trace "$(get_trace)" "
339Set initial 96 bytes of header to FF
340Set initial 96 bytes of header to FF
341Set initial 96 bytes of header to FF" || exit 1
342 remove_prog xmit
343}
344
345function test_netperf_nop {
346 test_start "test_netperf_nop on lwt xmit"
347 install_test xmit nop
348 netperf -H $IPVETH1 -t TCP_STREAM || {
349 failure "packets appear to be dropped"
350 }
351 match_trace "$(get_trace)" ""|| exit 1
352 remove_prog xmit
353}
354
355function test_netperf_redirect {
356 test_start "test_netperf_redirect on lwt xmit"
357 install_test xmit push_ll_and_redirect_silent
358 netperf -H $IPVETH1 -t TCP_STREAM || {
359 failure "Rewritten packets appear to be dropped"
360 }
361 match_trace "$(get_trace)" ""|| exit 1
362 remove_prog xmit
363}
364
365cleanup
366setup_one_veth $NS1 $VETH0 $VETH1 $IPVETH0 $IPVETH1 $IPVETH1b
367setup_one_veth $NS2 $VETH2 $VETH3 $IPVETH2 $IPVETH3
368ip netns exec $NS1 netserver
369echo 1 > ${TRACE_ROOT}/tracing_on
370
371DST_MAC=$(lookup_mac $VETH1 $NS1)
372SRC_MAC=$(lookup_mac $VETH0)
373DST_IFINDEX=$(cat /sys/class/net/$VETH0/ifindex)
374
375CLANG_OPTS="-O2 -target bpf -I ../include/"
376CLANG_OPTS+=" -DSRC_MAC=$SRC_MAC -DDST_MAC=$DST_MAC -DDST_IFINDEX=$DST_IFINDEX"
377clang $CLANG_OPTS -c test_lwt_bpf.c -o test_lwt_bpf.o
378
379test_ctx_xmit
380test_ctx_out
381test_ctx_in
382test_data "xmit"
383test_data "out"
384test_data_in
385test_cb "xmit"
386test_cb "out"
387test_cb_in
388test_drop_all "xmit"
389test_drop_all "out"
390test_drop_all_in
391test_rewrite
392test_push_ll_and_redirect
393test_no_l2_and_redirect
394test_fill_garbage
395test_netperf_nop
396test_netperf_redirect
397
398cleanup
399echo 0 > ${TRACE_ROOT}/tracing_on
400exit 0