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drm/bridge: adv7511: Switch to atomic operations
[drm/drm-misc.git] / tools / testing / selftests / net / pmtu.sh
blob66be7699c72c9a10a9990fcdef7f03f631400b26
1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3 #
4 # Check that route PMTU values match expectations, and that initial device MTU
5 # values are assigned correctly
6 #
7 # Tests currently implemented:
8 #
9 # - pmtu_ipv4
10 # Set up two namespaces, A and B, with two paths between them over routers
11 # R1 and R2 (also implemented with namespaces), with different MTUs:
12 #
13 # segment a_r1 segment b_r1 a_r1: 2000
14 # .--------------R1--------------. b_r1: 1400
15 # A B a_r2: 2000
16 # '--------------R2--------------' b_r2: 1500
17 # segment a_r2 segment b_r2
18 #
19 # Check that PMTU exceptions with the correct PMTU are created. Then
20 # decrease and increase the MTU of the local link for one of the paths,
21 # A to R1, checking that route exception PMTU changes accordingly over
22 # this path. Also check that locked exceptions are created when an ICMP
23 # message advertising a PMTU smaller than net.ipv4.route.min_pmtu is
24 # received
25 #
26 # - pmtu_ipv6
27 # Same as pmtu_ipv4, except for locked PMTU tests, using IPv6
28 #
29 # - pmtu_ipv4_dscp_icmp_exception
30 # Set up the same network topology as pmtu_ipv4, but use non-default
31 # routing table in A. A fib-rule is used to jump to this routing table
32 # based on DSCP. Send ICMPv4 packets with the expected DSCP value and
33 # verify that ECN doesn't interfere with the creation of PMTU exceptions.
34 #
35 # - pmtu_ipv4_dscp_udp_exception
36 # Same as pmtu_ipv4_dscp_icmp_exception, but use UDP instead of ICMP.
37 #
38 # - pmtu_ipv4_vxlan4_exception
39 # Set up the same network topology as pmtu_ipv4, create a VXLAN tunnel
40 # over IPv4 between A and B, routed via R1. On the link between R1 and B,
41 # set a MTU lower than the VXLAN MTU and the MTU on the link between A and
42 # R1. Send IPv4 packets, exceeding the MTU between R1 and B, over VXLAN
43 # from A to B and check that the PMTU exception is created with the right
44 # value on A
45 #
46 # - pmtu_ipv6_vxlan4_exception
47 # Same as pmtu_ipv4_vxlan4_exception, but send IPv6 packets from A to B
48 #
49 # - pmtu_ipv4_vxlan6_exception
50 # Same as pmtu_ipv4_vxlan4_exception, but use IPv6 transport from A to B
51 #
52 # - pmtu_ipv6_vxlan6_exception
53 # Same as pmtu_ipv4_vxlan6_exception, but send IPv6 packets from A to B
54 #
55 # - pmtu_ipv4_geneve4_exception
56 # Same as pmtu_ipv4_vxlan4_exception, but using a GENEVE tunnel instead of
57 # VXLAN
58 #
59 # - pmtu_ipv6_geneve4_exception
60 # Same as pmtu_ipv6_vxlan4_exception, but using a GENEVE tunnel instead of
61 # VXLAN
62 #
63 # - pmtu_ipv4_geneve6_exception
64 # Same as pmtu_ipv4_vxlan6_exception, but using a GENEVE tunnel instead of
65 # VXLAN
66 #
67 # - pmtu_ipv6_geneve6_exception
68 # Same as pmtu_ipv6_vxlan6_exception, but using a GENEVE tunnel instead of
69 # VXLAN
70 #
71 # - pmtu_ipv{4,6}_br_vxlan{4,6}_exception
72 # Set up three namespaces, A, B, and C, with routing between A and B over
73 # R1. R2 is unused in these tests. A has a veth connection to C, and is
74 # connected to B via a VXLAN endpoint, which is directly bridged to C.
75 # MTU on the B-R1 link is lower than other MTUs.
76 #
77 # Check that both C and A are able to communicate with B over the VXLAN
78 # tunnel, and that PMTU exceptions with the correct values are created.
79 #
80 # segment a_r1 segment b_r1 b_r1: 4000
81 # .--------------R1--------------. everything
82 # C---veth A B else: 5000
83 # ' bridge |
84 # '---- - - - - - VXLAN - - - - - - - '
85 #
86 # - pmtu_ipv{4,6}_br_geneve{4,6}_exception
87 # Same as pmtu_ipv{4,6}_br_vxlan{4,6}_exception, with a GENEVE tunnel
88 # instead.
89 #
90 # - pmtu_ipv{4,6}_ovs_vxlan{4,6}_exception
91 # Set up two namespaces, B, and C, with routing between the init namespace
92 # and B over R1. A and R2 are unused in these tests. The init namespace
93 # has a veth connection to C, and is connected to B via a VXLAN endpoint,
94 # which is handled by Open vSwitch and bridged to C. MTU on the B-R1 link
95 # is lower than other MTUs.
96 #
97 # Check that C is able to communicate with B over the VXLAN tunnel, and
98 # that PMTU exceptions with the correct values are created.
99 #
100 # segment a_r1 segment b_r1 b_r1: 4000
101 # .--------------R1--------------. everything
102 # C---veth init B else: 5000
103 # '- ovs |
104 # '---- - - - - - VXLAN - - - - - - - '
105 #
106 # - pmtu_ipv{4,6}_ovs_geneve{4,6}_exception
107 # Same as pmtu_ipv{4,6}_ovs_vxlan{4,6}_exception, with a GENEVE tunnel
108 # instead.
109 #
110 # - pmtu_ipv{4,6}_fou{4,6}_exception
111 # Same as pmtu_ipv4_vxlan4, but using a direct IPv4/IPv6 encapsulation
112 # (FoU) over IPv4/IPv6, instead of VXLAN
113 #
114 # - pmtu_ipv{4,6}_fou{4,6}_exception
115 # Same as pmtu_ipv4_vxlan4, but using a generic UDP IPv4/IPv6
116 # encapsulation (GUE) over IPv4/IPv6, instead of VXLAN
117 #
118 # - pmtu_ipv{4,6}_ipv{4,6}_exception
119 # Same as pmtu_ipv4_vxlan4, but using a IPv4/IPv6 tunnel over IPv4/IPv6,
120 # instead of VXLAN
121 #
122 # - pmtu_vti4_exception
123 # Set up vti tunnel on top of veth, with xfrm states and policies, in two
124 # namespaces with matching endpoints. Check that route exception is not
125 # created if link layer MTU is not exceeded, then exceed it and check that
126 # exception is created with the expected PMTU. The approach described
127 # below for IPv6 doesn't apply here, because, on IPv4, administrative MTU
128 # changes alone won't affect PMTU
129 #
130 # - pmtu_vti4_udp_exception
131 # Same as pmtu_vti4_exception, but using ESP-in-UDP
132 #
133 # - pmtu_vti4_udp_routed_exception
134 # Set up vti tunnel on top of veth connected through routing namespace and
135 # add xfrm states and policies with ESP-in-UDP encapsulation. Check that
136 # route exception is not created if link layer MTU is not exceeded, then
137 # lower MTU on second part of routed environment and check that exception
138 # is created with the expected PMTU.
139 #
140 # - pmtu_vti6_exception
141 # Set up vti6 tunnel on top of veth, with xfrm states and policies, in two
142 # namespaces with matching endpoints. Check that route exception is
143 # created by exceeding link layer MTU with ping to other endpoint. Then
144 # decrease and increase MTU of tunnel, checking that route exception PMTU
145 # changes accordingly
146 #
147 # - pmtu_vti6_udp_exception
148 # Same as pmtu_vti6_exception, but using ESP-in-UDP
149 #
150 # - pmtu_vti6_udp_routed_exception
151 # Same as pmtu_vti6_udp_routed_exception but with routing between vti
152 # endpoints
153 #
154 # - pmtu_vti4_default_mtu
155 # Set up vti4 tunnel on top of veth, in two namespaces with matching
156 # endpoints. Check that MTU assigned to vti interface is the MTU of the
157 # lower layer (veth) minus additional lower layer headers (zero, for veth)
158 # minus IPv4 header length
159 #
160 # - pmtu_vti6_default_mtu
161 # Same as above, for IPv6
162 #
163 # - pmtu_vti4_link_add_mtu
164 # Set up vti4 interface passing MTU value at link creation, check MTU is
165 # configured, and that link is not created with invalid MTU values
166 #
167 # - pmtu_vti6_link_add_mtu
168 # Same as above, for IPv6
169 #
170 # - pmtu_vti6_link_change_mtu
171 # Set up two dummy interfaces with different MTUs, create a vti6 tunnel
172 # and check that configured MTU is used on link creation and changes, and
173 # that MTU is properly calculated instead when MTU is not configured from
174 # userspace
175 #
176 # - cleanup_ipv4_exception
177 # Similar to pmtu_ipv4_vxlan4_exception, but explicitly generate PMTU
178 # exceptions on multiple CPUs and check that the veth device tear-down
179 # happens in a timely manner
180 #
181 # - cleanup_ipv6_exception
182 # Same as above, but use IPv6 transport from A to B
183 #
184 # - list_flush_ipv4_exception
185 # Using the same topology as in pmtu_ipv4, create exceptions, and check
186 # they are shown when listing exception caches, gone after flushing them
187 #
188 # - list_flush_ipv6_exception
189 # Using the same topology as in pmtu_ipv6, create exceptions, and check
190 # they are shown when listing exception caches, gone after flushing them
191 #
192 # - pmtu_ipv4_route_change
193 # Use the same topology as in pmtu_ipv4, but issue a route replacement
194 # command and delete the corresponding device afterward. This tests for
195 # proper cleanup of the PMTU exceptions by the route replacement path.
196 # Device unregistration should complete successfully
197 #
198 # - pmtu_ipv6_route_change
199 # Same as above but with IPv6
200 #
201 # - pmtu_ipv4_mp_exceptions
202 # Use the same topology as in pmtu_ipv4, but add routeable addresses
203 # on host A and B on lo reachable via both routers. Host A and B
204 # addresses have multipath routes to each other, b_r1 mtu = 1500.
205 # Check that PMTU exceptions are created for both paths.
206
207 source lib.sh
208 source net_helper.sh
209
210 PAUSE_ON_FAIL=no
211 VERBOSE=0
212 TRACING=0
213
214 # Some systems don't have a ping6 binary anymore
215 which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)
216
217 # Name Description re-run with nh
218 tests="
219 pmtu_ipv4_exception ipv4: PMTU exceptions 1
220 pmtu_ipv6_exception ipv6: PMTU exceptions 1
221 pmtu_ipv4_dscp_icmp_exception ICMPv4 with DSCP and ECN: PMTU exceptions 1
222 pmtu_ipv4_dscp_udp_exception UDPv4 with DSCP and ECN: PMTU exceptions 1
223 pmtu_ipv4_vxlan4_exception IPv4 over vxlan4: PMTU exceptions 1
224 pmtu_ipv6_vxlan4_exception IPv6 over vxlan4: PMTU exceptions 1
225 pmtu_ipv4_vxlan6_exception IPv4 over vxlan6: PMTU exceptions 1
226 pmtu_ipv6_vxlan6_exception IPv6 over vxlan6: PMTU exceptions 1
227 pmtu_ipv4_geneve4_exception IPv4 over geneve4: PMTU exceptions 1
228 pmtu_ipv6_geneve4_exception IPv6 over geneve4: PMTU exceptions 1
229 pmtu_ipv4_geneve6_exception IPv4 over geneve6: PMTU exceptions 1
230 pmtu_ipv6_geneve6_exception IPv6 over geneve6: PMTU exceptions 1
231 pmtu_ipv4_br_vxlan4_exception IPv4, bridged vxlan4: PMTU exceptions 1
232 pmtu_ipv6_br_vxlan4_exception IPv6, bridged vxlan4: PMTU exceptions 1
233 pmtu_ipv4_br_vxlan6_exception IPv4, bridged vxlan6: PMTU exceptions 1
234 pmtu_ipv6_br_vxlan6_exception IPv6, bridged vxlan6: PMTU exceptions 1
235 pmtu_ipv4_br_geneve4_exception IPv4, bridged geneve4: PMTU exceptions 1
236 pmtu_ipv6_br_geneve4_exception IPv6, bridged geneve4: PMTU exceptions 1
237 pmtu_ipv4_br_geneve6_exception IPv4, bridged geneve6: PMTU exceptions 1
238 pmtu_ipv6_br_geneve6_exception IPv6, bridged geneve6: PMTU exceptions 1
239 pmtu_ipv4_ovs_vxlan4_exception IPv4, OVS vxlan4: PMTU exceptions 1
240 pmtu_ipv6_ovs_vxlan4_exception IPv6, OVS vxlan4: PMTU exceptions 1
241 pmtu_ipv4_ovs_vxlan6_exception IPv4, OVS vxlan6: PMTU exceptions 1
242 pmtu_ipv6_ovs_vxlan6_exception IPv6, OVS vxlan6: PMTU exceptions 1
243 pmtu_ipv4_ovs_geneve4_exception IPv4, OVS geneve4: PMTU exceptions 1
244 pmtu_ipv6_ovs_geneve4_exception IPv6, OVS geneve4: PMTU exceptions 1
245 pmtu_ipv4_ovs_geneve6_exception IPv4, OVS geneve6: PMTU exceptions 1
246 pmtu_ipv6_ovs_geneve6_exception IPv6, OVS geneve6: PMTU exceptions 1
247 pmtu_ipv4_fou4_exception IPv4 over fou4: PMTU exceptions 1
248 pmtu_ipv6_fou4_exception IPv6 over fou4: PMTU exceptions 1
249 pmtu_ipv4_fou6_exception IPv4 over fou6: PMTU exceptions 1
250 pmtu_ipv6_fou6_exception IPv6 over fou6: PMTU exceptions 1
251 pmtu_ipv4_gue4_exception IPv4 over gue4: PMTU exceptions 1
252 pmtu_ipv6_gue4_exception IPv6 over gue4: PMTU exceptions 1
253 pmtu_ipv4_gue6_exception IPv4 over gue6: PMTU exceptions 1
254 pmtu_ipv6_gue6_exception IPv6 over gue6: PMTU exceptions 1
255 pmtu_ipv4_ipv4_exception IPv4 over IPv4: PMTU exceptions 1
256 pmtu_ipv6_ipv4_exception IPv6 over IPv4: PMTU exceptions 1
257 pmtu_ipv4_ipv6_exception IPv4 over IPv6: PMTU exceptions 1
258 pmtu_ipv6_ipv6_exception IPv6 over IPv6: PMTU exceptions 1
259 pmtu_vti6_exception vti6: PMTU exceptions 0
260 pmtu_vti4_exception vti4: PMTU exceptions 0
261 pmtu_vti6_udp_exception vti6: PMTU exceptions (ESP-in-UDP) 0
262 pmtu_vti4_udp_exception vti4: PMTU exceptions (ESP-in-UDP) 0
263 pmtu_vti6_udp_routed_exception vti6: PMTU exceptions, routed (ESP-in-UDP) 0
264 pmtu_vti4_udp_routed_exception vti4: PMTU exceptions, routed (ESP-in-UDP) 0
265 pmtu_vti4_default_mtu vti4: default MTU assignment 0
266 pmtu_vti6_default_mtu vti6: default MTU assignment 0
267 pmtu_vti4_link_add_mtu vti4: MTU setting on link creation 0
268 pmtu_vti6_link_add_mtu vti6: MTU setting on link creation 0
269 pmtu_vti6_link_change_mtu vti6: MTU changes on link changes 0
270 cleanup_ipv4_exception ipv4: cleanup of cached exceptions 1
271 cleanup_ipv6_exception ipv6: cleanup of cached exceptions 1
272 list_flush_ipv4_exception ipv4: list and flush cached exceptions 1
273 list_flush_ipv6_exception ipv6: list and flush cached exceptions 1
274 pmtu_ipv4_route_change ipv4: PMTU exception w/route replace 1
275 pmtu_ipv6_route_change ipv6: PMTU exception w/route replace 1
276 pmtu_ipv4_mp_exceptions ipv4: PMTU multipath nh exceptions 1"
277
278 # Addressing and routing for tests with routers: four network segments, with
279 # index SEGMENT between 1 and 4, a common prefix (PREFIX4 or PREFIX6) and an
280 # identifier ID, which is 1 for hosts (A and B), 2 for routers (R1 and R2).
281 # Addresses are:
282 # - IPv4: PREFIX4.SEGMENT.ID (/24)
283 # - IPv6: PREFIX6:SEGMENT::ID (/64)
284 prefix4="10.0"
285 prefix6="fc00"
286 a_r1=1
287 a_r2=2
288 b_r1=3
289 b_r2=4
290 # ns peer segment
291 routing_addrs="
292 A R1 ${a_r1}
293 A R2 ${a_r2}
294 B R1 ${b_r1}
295 B R2 ${b_r2}
296 "
297 # Traffic from A to B goes through R1 by default, and through R2, if destined to
298 # B's address on the b_r2 segment.
299 # Traffic from B to A goes through R1.
300 # ns destination gateway
301 routes="
302 A default ${prefix4}.${a_r1}.2
303 A ${prefix4}.${b_r2}.1 ${prefix4}.${a_r2}.2
304 B default ${prefix4}.${b_r1}.2
305
306 A default ${prefix6}:${a_r1}::2
307 A ${prefix6}:${b_r2}::1 ${prefix6}:${a_r2}::2
308 B default ${prefix6}:${b_r1}::2
309 "
310 USE_NH="no"
311 # ns family nh id destination gateway
312 nexthops="
313 A 4 41 ${prefix4}.${a_r1}.2 veth_A-R1
314 A 4 42 ${prefix4}.${a_r2}.2 veth_A-R2
315 B 4 41 ${prefix4}.${b_r1}.2 veth_B-R1
316
317 A 6 61 ${prefix6}:${a_r1}::2 veth_A-R1
318 A 6 62 ${prefix6}:${a_r2}::2 veth_A-R2
319 B 6 61 ${prefix6}:${b_r1}::2 veth_B-R1
320 "
321
322 # nexthop id correlates to id in nexthops config above
323 # ns family prefix nh id
324 routes_nh="
325 A 4 default 41
326 A 4 ${prefix4}.${b_r2}.1 42
327 B 4 default 41
328
329 A 6 default 61
330 A 6 ${prefix6}:${b_r2}::1 62
331 B 6 default 61
332 "
333
334 policy_mark=0x04
335 rt_table=main
336
337 veth4_a_addr="192.168.1.1"
338 veth4_b_addr="192.168.1.2"
339 veth4_c_addr="192.168.2.10"
340 veth4_mask="24"
341 veth6_a_addr="fd00:1::a"
342 veth6_b_addr="fd00:1::b"
343 veth6_c_addr="fd00:2::c"
344 veth6_mask="64"
345
346 tunnel4_a_addr="192.168.2.1"
347 tunnel4_b_addr="192.168.2.2"
348 tunnel4_mask="24"
349 tunnel6_a_addr="fd00:2::a"
350 tunnel6_b_addr="fd00:2::b"
351 tunnel6_mask="64"
352
353 host4_a_addr="192.168.99.99"
354 host4_b_addr="192.168.88.88"
355
356 dummy6_0_prefix="fc00:1000::"
357 dummy6_1_prefix="fc00:1001::"
358 dummy6_mask="64"
359
360 err_buf=
361 tcpdump_pids=
362 nettest_pids=
363 socat_pids=
364 tmpoutfile=
365
366 err() {
367 err_buf="${err_buf}${1}
368 "
369 }
370
371 err_flush() {
372 echo -n "${err_buf}"
373 err_buf=
374 }
375
376 run_cmd() {
377 cmd="$*"
378
379 if [ "$VERBOSE" = "1" ]; then
380 printf " COMMAND: $cmd\n"
381 fi
382
383 out="$($cmd 2>&1)"
384 rc=$?
385 if [ "$VERBOSE" = "1" -a -n "$out" ]; then
386 echo " $out"
387 echo
388 fi
389
390 return $rc
391 }
392
393 run_cmd_bg() {
394 cmd="$*"
395
396 if [ "$VERBOSE" = "1" ]; then
397 printf " COMMAND: %s &\n" "${cmd}"
398 fi
399
400 $cmd 2>&1 &
401 }
402
403 # Find the auto-generated name for this namespace
404 nsname() {
405 eval echo \$NS_$1
406 }
407
408 setup_fou_or_gue() {
409 outer="${1}"
410 inner="${2}"
411 encap="${3}"
412
413 if [ "${outer}" = "4" ]; then
414 modprobe fou || return $ksft_skip
415 a_addr="${prefix4}.${a_r1}.1"
416 b_addr="${prefix4}.${b_r1}.1"
417 if [ "${inner}" = "4" ]; then
418 type="ipip"
419 ipproto="4"
420 else
421 type="sit"
422 ipproto="41"
423 fi
424 else
425 modprobe fou6 || return $ksft_skip
426 a_addr="${prefix6}:${a_r1}::1"
427 b_addr="${prefix6}:${b_r1}::1"
428 if [ "${inner}" = "4" ]; then
429 type="ip6tnl"
430 mode="mode ipip6"
431 ipproto="4 -6"
432 else
433 type="ip6tnl"
434 mode="mode ip6ip6"
435 ipproto="41 -6"
436 fi
437 fi
438
439 run_cmd ${ns_a} ip fou add port 5555 ipproto ${ipproto} || return $ksft_skip
440 run_cmd ${ns_a} ip link add ${encap}_a type ${type} ${mode} local ${a_addr} remote ${b_addr} encap ${encap} encap-sport auto encap-dport 5556 || return $ksft_skip
441
442 run_cmd ${ns_b} ip fou add port 5556 ipproto ${ipproto}
443 run_cmd ${ns_b} ip link add ${encap}_b type ${type} ${mode} local ${b_addr} remote ${a_addr} encap ${encap} encap-sport auto encap-dport 5555
444
445 if [ "${inner}" = "4" ]; then
446 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${encap}_a
447 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${encap}_b
448 else
449 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${encap}_a
450 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${encap}_b
451 fi
452
453 run_cmd ${ns_a} ip link set ${encap}_a up
454 run_cmd ${ns_b} ip link set ${encap}_b up
455 }
456
457 setup_fou44() {
458 setup_fou_or_gue 4 4 fou
459 }
460
461 setup_fou46() {
462 setup_fou_or_gue 4 6 fou
463 }
464
465 setup_fou64() {
466 setup_fou_or_gue 6 4 fou
467 }
468
469 setup_fou66() {
470 setup_fou_or_gue 6 6 fou
471 }
472
473 setup_gue44() {
474 setup_fou_or_gue 4 4 gue
475 }
476
477 setup_gue46() {
478 setup_fou_or_gue 4 6 gue
479 }
480
481 setup_gue64() {
482 setup_fou_or_gue 6 4 gue
483 }
484
485 setup_gue66() {
486 setup_fou_or_gue 6 6 gue
487 }
488
489 setup_ipvX_over_ipvY() {
490 inner=${1}
491 outer=${2}
492
493 if [ "${outer}" -eq 4 ]; then
494 a_addr="${prefix4}.${a_r1}.1"
495 b_addr="${prefix4}.${b_r1}.1"
496 if [ "${inner}" -eq 4 ]; then
497 type="ipip"
498 mode="ipip"
499 else
500 type="sit"
501 mode="ip6ip"
502 fi
503 else
504 a_addr="${prefix6}:${a_r1}::1"
505 b_addr="${prefix6}:${b_r1}::1"
506 type="ip6tnl"
507 if [ "${inner}" -eq 4 ]; then
508 mode="ipip6"
509 else
510 mode="ip6ip6"
511 fi
512 fi
513
514 run_cmd ${ns_a} ip link add ip_a type ${type} local ${a_addr} remote ${b_addr} mode ${mode} || return $ksft_skip
515 run_cmd ${ns_b} ip link add ip_b type ${type} local ${b_addr} remote ${a_addr} mode ${mode}
516
517 run_cmd ${ns_a} ip link set ip_a up
518 run_cmd ${ns_b} ip link set ip_b up
519
520 if [ "${inner}" = "4" ]; then
521 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ip_a
522 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ip_b
523 else
524 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ip_a
525 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ip_b
526 fi
527 }
528
529 setup_ip4ip4() {
530 setup_ipvX_over_ipvY 4 4
531 }
532
533 setup_ip6ip4() {
534 setup_ipvX_over_ipvY 6 4
535 }
536
537 setup_ip4ip6() {
538 setup_ipvX_over_ipvY 4 6
539 }
540
541 setup_ip6ip6() {
542 setup_ipvX_over_ipvY 6 6
543 }
544
545 setup_namespaces() {
546 setup_ns NS_A NS_B NS_C NS_R1 NS_R2
547 for n in ${NS_A} ${NS_B} ${NS_C} ${NS_R1} ${NS_R2}; do
548 # Disable DAD, so that we don't have to wait to use the
549 # configured IPv6 addresses
550 ip netns exec ${n} sysctl -q net/ipv6/conf/default/accept_dad=0
551 done
552 ns_a="ip netns exec ${NS_A}"
553 ns_b="ip netns exec ${NS_B}"
554 ns_c="ip netns exec ${NS_C}"
555 ns_r1="ip netns exec ${NS_R1}"
556 ns_r2="ip netns exec ${NS_R2}"
557 }
558
559 setup_veth() {
560 run_cmd ${ns_a} ip link add veth_a type veth peer name veth_b || return 1
561 run_cmd ${ns_a} ip link set veth_b netns ${NS_B}
562
563 run_cmd ${ns_a} ip addr add ${veth4_a_addr}/${veth4_mask} dev veth_a
564 run_cmd ${ns_b} ip addr add ${veth4_b_addr}/${veth4_mask} dev veth_b
565
566 run_cmd ${ns_a} ip addr add ${veth6_a_addr}/${veth6_mask} dev veth_a
567 run_cmd ${ns_b} ip addr add ${veth6_b_addr}/${veth6_mask} dev veth_b
568
569 run_cmd ${ns_a} ip link set veth_a up
570 run_cmd ${ns_b} ip link set veth_b up
571 }
572
573 setup_vti() {
574 proto=${1}
575 veth_a_addr="${2}"
576 veth_b_addr="${3}"
577 vti_a_addr="${4}"
578 vti_b_addr="${5}"
579 vti_mask=${6}
580
581 [ ${proto} -eq 6 ] && vti_type="vti6" || vti_type="vti"
582
583 run_cmd ${ns_a} ip link add vti${proto}_a type ${vti_type} local ${veth_a_addr} remote ${veth_b_addr} key 10 || return 1
584 run_cmd ${ns_b} ip link add vti${proto}_b type ${vti_type} local ${veth_b_addr} remote ${veth_a_addr} key 10
585
586 run_cmd ${ns_a} ip addr add ${vti_a_addr}/${vti_mask} dev vti${proto}_a
587 run_cmd ${ns_b} ip addr add ${vti_b_addr}/${vti_mask} dev vti${proto}_b
588
589 run_cmd ${ns_a} ip link set vti${proto}_a up
590 run_cmd ${ns_b} ip link set vti${proto}_b up
591 }
592
593 setup_vti4() {
594 setup_vti 4 ${veth4_a_addr} ${veth4_b_addr} ${tunnel4_a_addr} ${tunnel4_b_addr} ${tunnel4_mask}
595 }
596
597 setup_vti6() {
598 setup_vti 6 ${veth6_a_addr} ${veth6_b_addr} ${tunnel6_a_addr} ${tunnel6_b_addr} ${tunnel6_mask}
599 }
600
601 setup_vti4routed() {
602 setup_vti 4 ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 ${tunnel4_a_addr} ${tunnel4_b_addr} ${tunnel4_mask}
603 }
604
605 setup_vti6routed() {
606 setup_vti 6 ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 ${tunnel6_a_addr} ${tunnel6_b_addr} ${tunnel6_mask}
607 }
608
609 setup_vxlan_or_geneve() {
610 type="${1}"
611 a_addr="${2}"
612 b_addr="${3}"
613 opts="${4}"
614 br_if_a="${5}"
615
616 if [ "${type}" = "vxlan" ]; then
617 opts="${opts} ttl 64 dstport 4789"
618 opts_a="local ${a_addr}"
619 opts_b="local ${b_addr}"
620 else
621 opts_a=""
622 opts_b=""
623 fi
624
625 run_cmd ${ns_a} ip link add ${type}_a type ${type} id 1 ${opts_a} remote ${b_addr} ${opts} || return 1
626 run_cmd ${ns_b} ip link add ${type}_b type ${type} id 1 ${opts_b} remote ${a_addr} ${opts}
627
628 if [ -n "${br_if_a}" ]; then
629 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${br_if_a}
630 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${br_if_a}
631 run_cmd ${ns_a} ip link set ${type}_a master ${br_if_a}
632 else
633 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${type}_a
634 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${type}_a
635 fi
636
637 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${type}_b
638 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${type}_b
639
640 run_cmd ${ns_a} ip link set ${type}_a up
641 run_cmd ${ns_b} ip link set ${type}_b up
642 }
643
644 setup_geneve4() {
645 setup_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set"
646 }
647
648 setup_vxlan4() {
649 setup_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set"
650 }
651
652 setup_geneve6() {
653 setup_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 ""
654 }
655
656 setup_vxlan6() {
657 setup_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 ""
658 }
659
660 setup_bridged_geneve4() {
661 setup_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set" "br0"
662 }
663
664 setup_bridged_vxlan4() {
665 setup_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set" "br0"
666 }
667
668 setup_bridged_geneve6() {
669 setup_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 "" "br0"
670 }
671
672 setup_bridged_vxlan6() {
673 setup_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 "" "br0"
674 }
675
676 setup_xfrm() {
677 proto=${1}
678 veth_a_addr="${2}"
679 veth_b_addr="${3}"
680 encap=${4}
681
682 run_cmd ${ns_a} ip -${proto} xfrm state add src ${veth_a_addr} dst ${veth_b_addr} spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel ${encap} || return 1
683 run_cmd ${ns_a} ip -${proto} xfrm state add src ${veth_b_addr} dst ${veth_a_addr} spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel ${encap}
684 run_cmd ${ns_a} ip -${proto} xfrm policy add dir out mark 10 tmpl src ${veth_a_addr} dst ${veth_b_addr} proto esp mode tunnel
685 run_cmd ${ns_a} ip -${proto} xfrm policy add dir in mark 10 tmpl src ${veth_b_addr} dst ${veth_a_addr} proto esp mode tunnel
686
687 run_cmd ${ns_b} ip -${proto} xfrm state add src ${veth_a_addr} dst ${veth_b_addr} spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel ${encap}
688 run_cmd ${ns_b} ip -${proto} xfrm state add src ${veth_b_addr} dst ${veth_a_addr} spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel ${encap}
689 run_cmd ${ns_b} ip -${proto} xfrm policy add dir out mark 10 tmpl src ${veth_b_addr} dst ${veth_a_addr} proto esp mode tunnel
690 run_cmd ${ns_b} ip -${proto} xfrm policy add dir in mark 10 tmpl src ${veth_a_addr} dst ${veth_b_addr} proto esp mode tunnel
691 }
692
693 setup_nettest_xfrm() {
694 check_gen_prog "nettest"
695
696 [ ${1} -eq 6 ] && proto="-6" || proto=""
697 port=${2}
698
699 run_cmd_bg "${ns_a}" nettest "${proto}" -q -D -s -x -p "${port}" -t 5
700 nettest_pids="${nettest_pids} $!"
701
702 run_cmd_bg "${ns_b}" nettest "${proto}" -q -D -s -x -p "${port}" -t 5
703 nettest_pids="${nettest_pids} $!"
704 }
705
706 setup_xfrm4() {
707 setup_xfrm 4 ${veth4_a_addr} ${veth4_b_addr}
708 }
709
710 setup_xfrm6() {
711 setup_xfrm 6 ${veth6_a_addr} ${veth6_b_addr}
712 }
713
714 setup_xfrm4udp() {
715 setup_xfrm 4 ${veth4_a_addr} ${veth4_b_addr} "encap espinudp 4500 4500 0.0.0.0" && \
716 setup_nettest_xfrm 4 4500
717 }
718
719 setup_xfrm6udp() {
720 setup_xfrm 6 ${veth6_a_addr} ${veth6_b_addr} "encap espinudp 4500 4500 0.0.0.0" && \
721 setup_nettest_xfrm 6 4500
722 }
723
724 setup_xfrm4udprouted() {
725 setup_xfrm 4 ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "encap espinudp 4500 4500 0.0.0.0" && \
726 setup_nettest_xfrm 4 4500
727 }
728
729 setup_xfrm6udprouted() {
730 setup_xfrm 6 ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 "encap espinudp 4500 4500 0.0.0.0" && \
731 setup_nettest_xfrm 6 4500
732 }
733
734 setup_routing_old() {
735 for i in ${routes}; do
736 [ "${ns}" = "" ] && ns="${i}" && continue
737 [ "${addr}" = "" ] && addr="${i}" && continue
738 [ "${gw}" = "" ] && gw="${i}"
739
740 ns_name="$(nsname ${ns})"
741
742 ip -n "${ns_name}" route add "${addr}" table "${rt_table}" via "${gw}"
743
744 ns=""; addr=""; gw=""
745 done
746 }
747
748 setup_routing_new() {
749 for i in ${nexthops}; do
750 [ "${ns}" = "" ] && ns="${i}" && continue
751 [ "${fam}" = "" ] && fam="${i}" && continue
752 [ "${nhid}" = "" ] && nhid="${i}" && continue
753 [ "${gw}" = "" ] && gw="${i}" && continue
754 [ "${dev}" = "" ] && dev="${i}"
755
756 ns_name="$(nsname ${ns})"
757
758 ip -n ${ns_name} -${fam} nexthop add id ${nhid} via ${gw} dev ${dev}
759
760 ns=""; fam=""; nhid=""; gw=""; dev=""
761
762 done
763
764 for i in ${routes_nh}; do
765 [ "${ns}" = "" ] && ns="${i}" && continue
766 [ "${fam}" = "" ] && fam="${i}" && continue
767 [ "${addr}" = "" ] && addr="${i}" && continue
768 [ "${nhid}" = "" ] && nhid="${i}"
769
770 ns_name="$(nsname ${ns})"
771
772 ip -n "${ns_name}" -"${fam}" route add "${addr}" table "${rt_table}" nhid "${nhid}"
773
774 ns=""; fam=""; addr=""; nhid=""
775 done
776 }
777
778 setup_routing() {
779 for i in ${NS_R1} ${NS_R2}; do
780 ip netns exec ${i} sysctl -q net/ipv4/ip_forward=1
781 ip netns exec ${i} sysctl -q net/ipv6/conf/all/forwarding=1
782 done
783
784 for i in ${routing_addrs}; do
785 [ "${ns}" = "" ] && ns="${i}" && continue
786 [ "${peer}" = "" ] && peer="${i}" && continue
787 [ "${segment}" = "" ] && segment="${i}"
788
789 ns_name="$(nsname ${ns})"
790 peer_name="$(nsname ${peer})"
791 if="veth_${ns}-${peer}"
792 ifpeer="veth_${peer}-${ns}"
793
794 # Create veth links
795 ip link add ${if} up netns ${ns_name} type veth peer name ${ifpeer} netns ${peer_name} || return 1
796 ip -n ${peer_name} link set dev ${ifpeer} up
797
798 # Add addresses
799 ip -n ${ns_name} addr add ${prefix4}.${segment}.1/24 dev ${if}
800 ip -n ${ns_name} addr add ${prefix6}:${segment}::1/64 dev ${if}
801
802 ip -n ${peer_name} addr add ${prefix4}.${segment}.2/24 dev ${ifpeer}
803 ip -n ${peer_name} addr add ${prefix6}:${segment}::2/64 dev ${ifpeer}
804
805 ns=""; peer=""; segment=""
806 done
807
808 if [ "$USE_NH" = "yes" ]; then
809 setup_routing_new
810 else
811 setup_routing_old
812 fi
813
814 return 0
815 }
816
817 setup_policy_routing() {
818 setup_routing
819
820 ip -netns "${NS_A}" -4 rule add dsfield "${policy_mark}" \
821 table "${rt_table}"
822
823 # Set the IPv4 Don't Fragment bit with tc, since socat doesn't seem to
824 # have an option do to it.
825 tc -netns "${NS_A}" qdisc replace dev veth_A-R1 root prio
826 tc -netns "${NS_A}" qdisc replace dev veth_A-R2 root prio
827 tc -netns "${NS_A}" filter add dev veth_A-R1 \
828 protocol ipv4 flower ip_proto udp \
829 action pedit ex munge ip df set 0x40 pipe csum ip and udp
830 tc -netns "${NS_A}" filter add dev veth_A-R2 \
831 protocol ipv4 flower ip_proto udp \
832 action pedit ex munge ip df set 0x40 pipe csum ip and udp
833 }
834
835 setup_bridge() {
836 run_cmd ${ns_a} ip link add br0 type bridge || return $ksft_skip
837 run_cmd ${ns_a} ip link set br0 up
838
839 run_cmd ${ns_c} ip link add veth_C-A type veth peer name veth_A-C
840 run_cmd ${ns_c} ip link set veth_A-C netns ${NS_A}
841
842 run_cmd ${ns_a} ip link set veth_A-C up
843 run_cmd ${ns_c} ip link set veth_C-A up
844 run_cmd ${ns_c} ip addr add ${veth4_c_addr}/${veth4_mask} dev veth_C-A
845 run_cmd ${ns_c} ip addr add ${veth6_c_addr}/${veth6_mask} dev veth_C-A
846 run_cmd ${ns_a} ip link set veth_A-C master br0
847 }
848
849 setup_ovs_via_internal_utility() {
850 type="${1}"
851 a_addr="${2}"
852 b_addr="${3}"
853 dport="${4}"
854
855 run_cmd python3 ./openvswitch/ovs-dpctl.py add-if ovs_br0 ${type}_a -t ${type} || return 1
856
857 ports=$(python3 ./openvswitch/ovs-dpctl.py show)
858 br0_port=$(echo "$ports" | grep -E "\sovs_br0" | sed -e 's@port @@' | cut -d: -f1 | xargs)
859 type_a_port=$(echo "$ports" | grep ${type}_a | sed -e 's@port @@' | cut -d: -f1 | xargs)
860 veth_a_port=$(echo "$ports" | grep veth_A | sed -e 's@port @@' | cut -d: -f1 | xargs)
861
862 v4_a_tun="${prefix4}.${a_r1}.1"
863 v4_b_tun="${prefix4}.${b_r1}.1"
864
865 v6_a_tun="${prefix6}:${a_r1}::1"
866 v6_b_tun="${prefix6}:${b_r1}::1"
867
868 if [ "${v4_a_tun}" = "${a_addr}" ]; then
869 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
870 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x0800),ipv4()" \
871 "set(tunnel(tun_id=1,dst=${v4_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
872 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
873 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x86dd),ipv6()" \
874 "set(tunnel(tun_id=1,dst=${v4_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
875 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
876 "recirc_id(0),tunnel(tun_id=1,src=${v4_b_tun},dst=${v4_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x0800),ipv4()" \
877 "${veth_a_port}"
878 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
879 "recirc_id(0),tunnel(tun_id=1,src=${v4_b_tun},dst=${v4_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x86dd),ipv6()" \
880 "${veth_a_port}"
881 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
882 "recirc_id(0),tunnel(tun_id=1,src=${v4_b_tun},dst=${v4_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x0806),arp()" \
883 "${veth_a_port}"
884 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
885 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x0806),arp(sip=${veth4_c_addr},tip=${tunnel4_b_addr})" \
886 "set(tunnel(tun_id=1,dst=${v4_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
887 else
888 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
889 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x0800),ipv4()" \
890 "set(tunnel(tun_id=1,ipv6_dst=${v6_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
891 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
892 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x86dd),ipv6()" \
893 "set(tunnel(tun_id=1,ipv6_dst=${v6_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
894 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
895 "recirc_id(0),tunnel(tun_id=1,ipv6_src=${v6_b_tun},ipv6_dst=${v6_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x0800),ipv4()" \
896 "${veth_a_port}"
897 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
898 "recirc_id(0),tunnel(tun_id=1,ipv6_src=${v6_b_tun},ipv6_dst=${v6_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x86dd),ipv6()" \
899 "${veth_a_port}"
900 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
901 "recirc_id(0),tunnel(tun_id=1,ipv6_src=${v6_b_tun},ipv6_dst=${v6_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x0806),arp()" \
902 "${veth_a_port}"
903 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
904 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x0806),arp(sip=${veth4_c_addr},tip=${tunnel4_b_addr})" \
905 "set(tunnel(tun_id=1,ipv6_dst=${v6_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
906 fi
907 }
908
909 setup_ovs_via_vswitchd() {
910 type="${1}"
911 b_addr="${2}"
912
913 run_cmd ovs-vsctl add-port ovs_br0 ${type}_a -- \
914 set interface ${type}_a type=${type} \
915 options:remote_ip=${b_addr} options:key=1 options:csum=true || return 1
916 }
917
918 setup_ovs_vxlan_or_geneve() {
919 type="${1}"
920 a_addr="${2}"
921 b_addr="${3}"
922 dport="6081"
923
924 if [ "${type}" = "vxlan" ]; then
925 dport="4789"
926 opts="${opts} ttl 64 dstport 4789"
927 opts_b="local ${b_addr}"
928 fi
929
930 setup_ovs_via_internal_utility "${type}" "${a_addr}" "${b_addr}" \
931 "${dport}" || \
932 setup_ovs_via_vswitchd "${type}" "${b_addr}" || return 1
933
934 run_cmd ${ns_b} ip link add ${type}_b type ${type} id 1 ${opts_b} remote ${a_addr} ${opts} || return 1
935
936 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${type}_b
937 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${type}_b
938
939 run_cmd ip link set ${type}_a up
940 run_cmd ${ns_b} ip link set ${type}_b up
941 }
942
943 setup_ovs_geneve4() {
944 setup_ovs_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1
945 }
946
947 setup_ovs_vxlan4() {
948 setup_ovs_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1
949 }
950
951 setup_ovs_geneve6() {
952 setup_ovs_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1
953 }
954
955 setup_ovs_vxlan6() {
956 setup_ovs_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1
957 }
958
959 setup_ovs_br_internal() {
960 run_cmd python3 ./openvswitch/ovs-dpctl.py add-dp ovs_br0 || \
961 return 1
962 }
963
964 setup_ovs_br_vswitchd() {
965 run_cmd ovs-vsctl add-br ovs_br0 || return 1
966 }
967
968 setup_ovs_add_if() {
969 ifname="${1}"
970 run_cmd python3 ./openvswitch/ovs-dpctl.py add-if ovs_br0 \
971 "${ifname}" || \
972 run_cmd ovs-vsctl add-port ovs_br0 "${ifname}"
973 }
974
975 setup_ovs_bridge() {
976 setup_ovs_br_internal || setup_ovs_br_vswitchd || return $ksft_skip
977 run_cmd ip link set ovs_br0 up
978
979 run_cmd ${ns_c} ip link add veth_C-A type veth peer name veth_A-C
980 run_cmd ${ns_c} ip link set veth_A-C netns 1
981
982 run_cmd ip link set veth_A-C up
983 run_cmd ${ns_c} ip link set veth_C-A up
984 run_cmd ${ns_c} ip addr add ${veth4_c_addr}/${veth4_mask} dev veth_C-A
985 run_cmd ${ns_c} ip addr add ${veth6_c_addr}/${veth6_mask} dev veth_C-A
986 setup_ovs_add_if veth_A-C
987
988 # Move veth_A-R1 to init
989 run_cmd ${ns_a} ip link set veth_A-R1 netns 1
990 run_cmd ip addr add ${prefix4}.${a_r1}.1/${veth4_mask} dev veth_A-R1
991 run_cmd ip addr add ${prefix6}:${a_r1}::1/${veth6_mask} dev veth_A-R1
992 run_cmd ip link set veth_A-R1 up
993 run_cmd ip route add ${prefix4}.${b_r1}.1 via ${prefix4}.${a_r1}.2
994 run_cmd ip route add ${prefix6}:${b_r1}::1 via ${prefix6}:${a_r1}::2
995 }
996
997 setup_multipath_new() {
998 # Set up host A with multipath routes to host B host4_b_addr
999 run_cmd ${ns_a} ip addr add ${host4_a_addr} dev lo
1000 run_cmd ${ns_a} ip nexthop add id 401 via ${prefix4}.${a_r1}.2 dev veth_A-R1
1001 run_cmd ${ns_a} ip nexthop add id 402 via ${prefix4}.${a_r2}.2 dev veth_A-R2
1002 run_cmd ${ns_a} ip nexthop add id 403 group 401/402
1003 run_cmd ${ns_a} ip route add ${host4_b_addr} src ${host4_a_addr} nhid 403
1004
1005 # Set up host B with multipath routes to host A host4_a_addr
1006 run_cmd ${ns_b} ip addr add ${host4_b_addr} dev lo
1007 run_cmd ${ns_b} ip nexthop add id 401 via ${prefix4}.${b_r1}.2 dev veth_B-R1
1008 run_cmd ${ns_b} ip nexthop add id 402 via ${prefix4}.${b_r2}.2 dev veth_B-R2
1009 run_cmd ${ns_b} ip nexthop add id 403 group 401/402
1010 run_cmd ${ns_b} ip route add ${host4_a_addr} src ${host4_b_addr} nhid 403
1011 }
1012
1013 setup_multipath_old() {
1014 # Set up host A with multipath routes to host B host4_b_addr
1015 run_cmd ${ns_a} ip addr add ${host4_a_addr} dev lo
1016 run_cmd ${ns_a} ip route add ${host4_b_addr} \
1017 src ${host4_a_addr} \
1018 nexthop via ${prefix4}.${a_r1}.2 weight 1 \
1019 nexthop via ${prefix4}.${a_r2}.2 weight 1
1020
1021 # Set up host B with multipath routes to host A host4_a_addr
1022 run_cmd ${ns_b} ip addr add ${host4_b_addr} dev lo
1023 run_cmd ${ns_b} ip route add ${host4_a_addr} \
1024 src ${host4_b_addr} \
1025 nexthop via ${prefix4}.${b_r1}.2 weight 1 \
1026 nexthop via ${prefix4}.${b_r2}.2 weight 1
1027 }
1028
1029 setup_multipath() {
1030 if [ "$USE_NH" = "yes" ]; then
1031 setup_multipath_new
1032 else
1033 setup_multipath_old
1034 fi
1035
1036 # Set up routers with routes to dummies
1037 run_cmd ${ns_r1} ip route add ${host4_a_addr} via ${prefix4}.${a_r1}.1
1038 run_cmd ${ns_r2} ip route add ${host4_a_addr} via ${prefix4}.${a_r2}.1
1039 run_cmd ${ns_r1} ip route add ${host4_b_addr} via ${prefix4}.${b_r1}.1
1040 run_cmd ${ns_r2} ip route add ${host4_b_addr} via ${prefix4}.${b_r2}.1
1041 }
1042
1043 setup() {
1044 [ "$(id -u)" -ne 0 ] && echo " need to run as root" && return $ksft_skip
1045
1046 for arg do
1047 eval setup_${arg} || { echo " ${arg} not supported"; return 1; }
1048 done
1049 }
1050
1051 trace() {
1052 [ $TRACING -eq 0 ] && return
1053
1054 for arg do
1055 [ "${ns_cmd}" = "" ] && ns_cmd="${arg}" && continue
1056 ${ns_cmd} tcpdump --immediate-mode -s 0 -i "${arg}" -w "${name}_${arg}.pcap" 2> /dev/null &
1057 tcpdump_pids="${tcpdump_pids} $!"
1058 ns_cmd=
1059 done
1060 sleep 1
1061 }
1062
1063 cleanup_del_ovs_internal() {
1064 # squelch the output of the del-if commands since it can be wordy
1065 python3 ./openvswitch/ovs-dpctl.py del-if ovs_br0 -d true vxlan_a >/dev/null 2>&1
1066 python3 ./openvswitch/ovs-dpctl.py del-if ovs_br0 -d true geneve_a >/dev/null 2>&1
1067 python3 ./openvswitch/ovs-dpctl.py del-dp ovs_br0 >/dev/null 2>&1
1068 }
1069
1070 cleanup_del_ovs_vswitchd() {
1071 ovs-vsctl --if-exists del-port vxlan_a 2>/dev/null
1072 ovs-vsctl --if-exists del-br ovs_br0 2>/dev/null
1073 }
1074
1075 cleanup() {
1076 for pid in ${tcpdump_pids}; do
1077 kill ${pid}
1078 done
1079 tcpdump_pids=
1080
1081 for pid in ${nettest_pids}; do
1082 kill ${pid}
1083 done
1084 nettest_pids=
1085
1086 for pid in ${socat_pids}; do
1087 kill "${pid}"
1088 done
1089 socat_pids=
1090
1091 cleanup_all_ns
1092
1093 ip link del veth_A-C 2>/dev/null
1094 ip link del veth_A-R1 2>/dev/null
1095 cleanup_del_ovs_internal
1096 cleanup_del_ovs_vswitchd
1097 rm -f "$tmpoutfile"
1098 }
1099
1100 mtu() {
1101 ns_cmd="${1}"
1102 dev="${2}"
1103 mtu="${3}"
1104
1105 ${ns_cmd} ip link set dev ${dev} mtu ${mtu}
1106 }
1107
1108 mtu_parse() {
1109 input="${1}"
1110
1111 next=0
1112 for i in ${input}; do
1113 [ ${next} -eq 1 -a "${i}" = "lock" ] && next=2 && continue
1114 [ ${next} -eq 1 ] && echo "${i}" && return
1115 [ ${next} -eq 2 ] && echo "lock ${i}" && return
1116 [ "${i}" = "mtu" ] && next=1
1117 done
1118 }
1119
1120 link_get() {
1121 ns_cmd="${1}"
1122 name="${2}"
1123
1124 ${ns_cmd} ip link show dev "${name}"
1125 }
1126
1127 link_get_mtu() {
1128 ns_cmd="${1}"
1129 name="${2}"
1130
1131 mtu_parse "$(link_get "${ns_cmd}" ${name})"
1132 }
1133
1134 route_get_dst_exception() {
1135 ns_cmd="${1}"; shift
1136
1137 ${ns_cmd} ip route get "$@"
1138 }
1139
1140 route_get_dst_pmtu_from_exception() {
1141 ns_cmd="${1}"; shift
1142
1143 mtu_parse "$(route_get_dst_exception "${ns_cmd}" "$@")"
1144 }
1145
1146 check_pmtu_value() {
1147 expected="${1}"
1148 value="${2}"
1149 event="${3}"
1150
1151 [ "${expected}" = "any" ] && [ -n "${value}" ] && return 0
1152 [ "${value}" = "${expected}" ] && return 0
1153 [ -z "${value}" ] && err " PMTU exception wasn't created after ${event}" && return 1
1154 [ -z "${expected}" ] && err " PMTU exception shouldn't exist after ${event}" && return 1
1155 err " found PMTU exception with incorrect MTU ${value}, expected ${expected}, after ${event}"
1156 return 1
1157 }
1158
1159 test_pmtu_ipvX() {
1160 family=${1}
1161
1162 setup namespaces routing || return $ksft_skip
1163 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1164 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
1165 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
1166 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
1167
1168 if [ ${family} -eq 4 ]; then
1169 ping=ping
1170 dst1="${prefix4}.${b_r1}.1"
1171 dst2="${prefix4}.${b_r2}.1"
1172 else
1173 ping=${ping6}
1174 dst1="${prefix6}:${b_r1}::1"
1175 dst2="${prefix6}:${b_r2}::1"
1176 fi
1177
1178 # Set up initial MTU values
1179 mtu "${ns_a}" veth_A-R1 2000
1180 mtu "${ns_r1}" veth_R1-A 2000
1181 mtu "${ns_r1}" veth_R1-B 1400
1182 mtu "${ns_b}" veth_B-R1 1400
1183
1184 mtu "${ns_a}" veth_A-R2 2000
1185 mtu "${ns_r2}" veth_R2-A 2000
1186 mtu "${ns_r2}" veth_R2-B 1500
1187 mtu "${ns_b}" veth_B-R2 1500
1188
1189 # Create route exceptions
1190 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst1}
1191 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst2}
1192
1193 # Check that exceptions have been created with the correct PMTU
1194 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1195 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
1196 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1197 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
1198
1199 # Decrease local MTU below PMTU, check for PMTU decrease in route exception
1200 mtu "${ns_a}" veth_A-R1 1300
1201 mtu "${ns_r1}" veth_R1-A 1300
1202 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1203 check_pmtu_value "1300" "${pmtu_1}" "decreasing local MTU" || return 1
1204 # Second exception shouldn't be modified
1205 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1206 check_pmtu_value "1500" "${pmtu_2}" "changing local MTU on a link not on this path" || return 1
1207
1208 # Increase MTU, check for PMTU increase in route exception
1209 mtu "${ns_a}" veth_A-R1 1700
1210 mtu "${ns_r1}" veth_R1-A 1700
1211 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1212 check_pmtu_value "1700" "${pmtu_1}" "increasing local MTU" || return 1
1213 # Second exception shouldn't be modified
1214 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1215 check_pmtu_value "1500" "${pmtu_2}" "changing local MTU on a link not on this path" || return 1
1216
1217 # Skip PMTU locking tests for IPv6
1218 [ $family -eq 6 ] && return 0
1219
1220 # Decrease remote MTU on path via R2, get new exception
1221 mtu "${ns_r2}" veth_R2-B 400
1222 mtu "${ns_b}" veth_B-R2 400
1223 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1400 ${dst2}
1224 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1225 check_pmtu_value "lock 552" "${pmtu_2}" "exceeding MTU, with MTU < min_pmtu" || return 1
1226
1227 # Decrease local MTU below PMTU
1228 mtu "${ns_a}" veth_A-R2 500
1229 mtu "${ns_r2}" veth_R2-A 500
1230 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1231 check_pmtu_value "500" "${pmtu_2}" "decreasing local MTU" || return 1
1232
1233 # Increase local MTU
1234 mtu "${ns_a}" veth_A-R2 1500
1235 mtu "${ns_r2}" veth_R2-A 1500
1236 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1237 check_pmtu_value "1500" "${pmtu_2}" "increasing local MTU" || return 1
1238
1239 # Get new exception
1240 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1400 ${dst2}
1241 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1242 check_pmtu_value "lock 552" "${pmtu_2}" "exceeding MTU, with MTU < min_pmtu" || return 1
1243 }
1244
1245 test_pmtu_ipv4_exception() {
1246 test_pmtu_ipvX 4
1247 }
1248
1249 test_pmtu_ipv6_exception() {
1250 test_pmtu_ipvX 6
1251 }
1252
1253 test_pmtu_ipv4_dscp_icmp_exception() {
1254 rt_table=100
1255
1256 setup namespaces policy_routing || return $ksft_skip
1257 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1258 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
1259 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
1260 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
1261
1262 # Set up initial MTU values
1263 mtu "${ns_a}" veth_A-R1 2000
1264 mtu "${ns_r1}" veth_R1-A 2000
1265 mtu "${ns_r1}" veth_R1-B 1400
1266 mtu "${ns_b}" veth_B-R1 1400
1267
1268 mtu "${ns_a}" veth_A-R2 2000
1269 mtu "${ns_r2}" veth_R2-A 2000
1270 mtu "${ns_r2}" veth_R2-B 1500
1271 mtu "${ns_b}" veth_B-R2 1500
1272
1273 len=$((2000 - 20 - 8)) # Fills MTU of veth_A-R1
1274
1275 dst1="${prefix4}.${b_r1}.1"
1276 dst2="${prefix4}.${b_r2}.1"
1277
1278 # Create route exceptions
1279 dsfield=${policy_mark} # No ECN bit set (Not-ECT)
1280 run_cmd "${ns_a}" ping -q -M want -Q "${dsfield}" -c 1 -w 1 -s "${len}" "${dst1}"
1281
1282 dsfield=$(printf "%#x" $((policy_mark + 0x02))) # ECN=2 (ECT(0))
1283 run_cmd "${ns_a}" ping -q -M want -Q "${dsfield}" -c 1 -w 1 -s "${len}" "${dst2}"
1284
1285 # Check that exceptions have been created with the correct PMTU
1286 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst1}" dsfield "${policy_mark}")"
1287 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
1288
1289 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst2}" dsfield "${policy_mark}")"
1290 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
1291 }
1292
1293 test_pmtu_ipv4_dscp_udp_exception() {
1294 rt_table=100
1295
1296 if ! which socat > /dev/null 2>&1; then
1297 echo "'socat' command not found; skipping tests"
1298 return $ksft_skip
1299 fi
1300
1301 setup namespaces policy_routing || return $ksft_skip
1302 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1303 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
1304 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
1305 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
1306
1307 # Set up initial MTU values
1308 mtu "${ns_a}" veth_A-R1 2000
1309 mtu "${ns_r1}" veth_R1-A 2000
1310 mtu "${ns_r1}" veth_R1-B 1400
1311 mtu "${ns_b}" veth_B-R1 1400
1312
1313 mtu "${ns_a}" veth_A-R2 2000
1314 mtu "${ns_r2}" veth_R2-A 2000
1315 mtu "${ns_r2}" veth_R2-B 1500
1316 mtu "${ns_b}" veth_B-R2 1500
1317
1318 len=$((2000 - 20 - 8)) # Fills MTU of veth_A-R1
1319
1320 dst1="${prefix4}.${b_r1}.1"
1321 dst2="${prefix4}.${b_r2}.1"
1322
1323 # Create route exceptions
1324 run_cmd_bg "${ns_b}" socat UDP-LISTEN:50000 OPEN:/dev/null,wronly=1
1325 socat_pids="${socat_pids} $!"
1326
1327 dsfield=${policy_mark} # No ECN bit set (Not-ECT)
1328 run_cmd "${ns_a}" socat OPEN:/dev/zero,rdonly=1,readbytes="${len}" \
1329 UDP:"${dst1}":50000,tos="${dsfield}"
1330
1331 dsfield=$(printf "%#x" $((policy_mark + 0x02))) # ECN=2 (ECT(0))
1332 run_cmd "${ns_a}" socat OPEN:/dev/zero,rdonly=1,readbytes="${len}" \
1333 UDP:"${dst2}":50000,tos="${dsfield}"
1334
1335 # Check that exceptions have been created with the correct PMTU
1336 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst1}" dsfield "${policy_mark}")"
1337 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
1338 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst2}" dsfield "${policy_mark}")"
1339 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
1340 }
1341
1342 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception() {
1343 type=${1}
1344 family=${2}
1345 outer_family=${3}
1346 ll_mtu=4000
1347
1348 if [ ${outer_family} -eq 4 ]; then
1349 setup namespaces routing ${type}4 || return $ksft_skip
1350 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1351 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1352 else
1353 setup namespaces routing ${type}6 || return $ksft_skip
1354 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1355 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1356 fi
1357
1358 trace "${ns_a}" ${type}_a "${ns_b}" ${type}_b \
1359 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1360 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1361
1362 if [ ${family} -eq 4 ]; then
1363 ping=ping
1364 dst=${tunnel4_b_addr}
1365 else
1366 ping=${ping6}
1367 dst=${tunnel6_b_addr}
1368 fi
1369
1370 # Create route exception by exceeding link layer MTU
1371 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1372 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1373 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1374 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1375
1376 mtu "${ns_a}" ${type}_a $((${ll_mtu} + 1000))
1377 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1378 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1379
1380 # Check that exception was created
1381 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1382 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ${type} interface"
1383 }
1384
1385 test_pmtu_ipv4_vxlan4_exception() {
1386 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 4 4
1387 }
1388
1389 test_pmtu_ipv6_vxlan4_exception() {
1390 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 6 4
1391 }
1392
1393 test_pmtu_ipv4_geneve4_exception() {
1394 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 4 4
1395 }
1396
1397 test_pmtu_ipv6_geneve4_exception() {
1398 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 6 4
1399 }
1400
1401 test_pmtu_ipv4_vxlan6_exception() {
1402 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 4 6
1403 }
1404
1405 test_pmtu_ipv6_vxlan6_exception() {
1406 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 6 6
1407 }
1408
1409 test_pmtu_ipv4_geneve6_exception() {
1410 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 4 6
1411 }
1412
1413 test_pmtu_ipv6_geneve6_exception() {
1414 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 6 6
1415 }
1416
1417 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception() {
1418 type=${1}
1419 family=${2}
1420 outer_family=${3}
1421 ll_mtu=4000
1422
1423 if [ ${outer_family} -eq 4 ]; then
1424 setup namespaces routing bridge bridged_${type}4 || return $ksft_skip
1425 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1426 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1427 else
1428 setup namespaces routing bridge bridged_${type}6 || return $ksft_skip
1429 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1430 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1431 fi
1432
1433 trace "${ns_a}" ${type}_a "${ns_b}" ${type}_b \
1434 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1435 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B \
1436 "${ns_a}" br0 "${ns_a}" veth-A-C \
1437 "${ns_c}" veth_C-A
1438
1439 if [ ${family} -eq 4 ]; then
1440 ping=ping
1441 dst=${tunnel4_b_addr}
1442 else
1443 ping=${ping6}
1444 dst=${tunnel6_b_addr}
1445 fi
1446
1447 # Create route exception by exceeding link layer MTU
1448 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1449 mtu "${ns_a}" br0 $((${ll_mtu} + 1000))
1450 mtu "${ns_a}" veth_A-C $((${ll_mtu} + 1000))
1451 mtu "${ns_c}" veth_C-A $((${ll_mtu} + 1000))
1452 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1453 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1454 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1455
1456 mtu "${ns_a}" ${type}_a $((${ll_mtu} + 1000))
1457 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1458
1459 run_cmd ${ns_c} ${ping} -q -M want -i 0.1 -c 10 -s $((${ll_mtu} + 500)) ${dst} || return 1
1460 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst} || return 1
1461
1462 # Check that exceptions were created
1463 pmtu="$(route_get_dst_pmtu_from_exception "${ns_c}" ${dst})"
1464 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on bridged ${type} interface"
1465 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1466 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on locally bridged ${type} interface"
1467
1468 tmpoutfile=$(mktemp)
1469
1470 # Flush Exceptions, retry with TCP
1471 run_cmd ${ns_a} ip route flush cached ${dst}
1472 run_cmd ${ns_b} ip route flush cached ${dst}
1473 run_cmd ${ns_c} ip route flush cached ${dst}
1474
1475 for target in "${ns_a}" "${ns_c}" ; do
1476 if [ ${family} -eq 4 ]; then
1477 TCPDST=TCP:${dst}:50000
1478 else
1479 TCPDST="TCP:[${dst}]:50000"
1480 fi
1481 ${ns_b} socat -T 3 -u -6 TCP-LISTEN:50000,reuseaddr STDOUT > $tmpoutfile &
1482 local socat_pid=$!
1483
1484 wait_local_port_listen ${NS_B} 50000 tcp
1485
1486 dd if=/dev/zero status=none bs=1M count=1 | ${target} socat -T 3 -u STDIN $TCPDST,connect-timeout=3
1487
1488 wait ${socat_pid}
1489 size=$(du -sb $tmpoutfile)
1490 size=${size%%/tmp/*}
1491
1492 [ $size -ne 1048576 ] && err "File size $size mismatches expected value in locally bridged vxlan test" && return 1
1493 done
1494
1495 rm -f "$tmpoutfile"
1496
1497 # Check that exceptions were created
1498 pmtu="$(route_get_dst_pmtu_from_exception "${ns_c}" ${dst})"
1499 check_pmtu_value ${exp_mtu} "${pmtu}" "tcp: exceeding link layer MTU on bridged ${type} interface"
1500 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1501 check_pmtu_value ${exp_mtu} "${pmtu}" "tcp exceeding link layer MTU on locally bridged ${type} interface"
1502 }
1503
1504 test_pmtu_ipv4_br_vxlan4_exception() {
1505 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 4 4
1506 }
1507
1508 test_pmtu_ipv6_br_vxlan4_exception() {
1509 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 6 4
1510 }
1511
1512 test_pmtu_ipv4_br_geneve4_exception() {
1513 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 4 4
1514 }
1515
1516 test_pmtu_ipv6_br_geneve4_exception() {
1517 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 6 4
1518 }
1519
1520 test_pmtu_ipv4_br_vxlan6_exception() {
1521 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 4 6
1522 }
1523
1524 test_pmtu_ipv6_br_vxlan6_exception() {
1525 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 6 6
1526 }
1527
1528 test_pmtu_ipv4_br_geneve6_exception() {
1529 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 4 6
1530 }
1531
1532 test_pmtu_ipv6_br_geneve6_exception() {
1533 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 6 6
1534 }
1535
1536 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception() {
1537 type=${1}
1538 family=${2}
1539 outer_family=${3}
1540 ll_mtu=4000
1541
1542 if [ "${type}" = "vxlan" ]; then
1543 tun_a="vxlan_sys_4789"
1544 elif [ "${type}" = "geneve" ]; then
1545 tun_a="genev_sys_6081"
1546 fi
1547
1548 if [ ${outer_family} -eq 4 ]; then
1549 setup namespaces routing ovs_bridge ovs_${type}4 || return $ksft_skip
1550 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1551 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1552 else
1553 setup namespaces routing ovs_bridge ovs_${type}6 || return $ksft_skip
1554 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1555 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1556 fi
1557
1558 trace "" ${type}_a "${ns_b}" ${type}_b \
1559 "" veth_A-R1 "${ns_r1}" veth_R1-A \
1560 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B \
1561 "" ovs_br0 "" veth-A_C \
1562 "${ns_c}" veth_C-A "" "${tun_a}"
1563
1564 if [ ${family} -eq 4 ]; then
1565 ping=ping
1566 dst=${tunnel4_b_addr}
1567 else
1568 ping=${ping6}
1569 dst=${tunnel6_b_addr}
1570 fi
1571
1572 # Create route exception by exceeding link layer MTU
1573 mtu "" veth_A-R1 $((${ll_mtu} + 1000))
1574 mtu "" ovs_br0 $((${ll_mtu} + 1000))
1575 mtu "" veth_A-C $((${ll_mtu} + 1000))
1576 mtu "${ns_c}" veth_C-A $((${ll_mtu} + 1000))
1577 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1578 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1579 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1580
1581 mtu "" ${tun_a} $((${ll_mtu} + 1000)) 2>/dev/null || \
1582 mtu "" ${type}_a $((${ll_mtu} + 1000)) 2>/dev/null
1583 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1584
1585 run_cmd ${ns_c} ${ping} -q -M want -i 0.1 -c 20 -s $((${ll_mtu} + 500)) ${dst} || return 1
1586
1587 # Check that exceptions were created
1588 pmtu="$(route_get_dst_pmtu_from_exception "${ns_c}" ${dst})"
1589 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on Open vSwitch ${type} interface"
1590 }
1591
1592 test_pmtu_ipv4_ovs_vxlan4_exception() {
1593 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 4 4
1594 }
1595
1596 test_pmtu_ipv6_ovs_vxlan4_exception() {
1597 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 6 4
1598 }
1599
1600 test_pmtu_ipv4_ovs_geneve4_exception() {
1601 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 4 4
1602 }
1603
1604 test_pmtu_ipv6_ovs_geneve4_exception() {
1605 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 6 4
1606 }
1607
1608 test_pmtu_ipv4_ovs_vxlan6_exception() {
1609 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 4 6
1610 }
1611
1612 test_pmtu_ipv6_ovs_vxlan6_exception() {
1613 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 6 6
1614 }
1615
1616 test_pmtu_ipv4_ovs_geneve6_exception() {
1617 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 4 6
1618 }
1619
1620 test_pmtu_ipv6_ovs_geneve6_exception() {
1621 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 6 6
1622 }
1623
1624 test_pmtu_ipvX_over_fouY_or_gueY() {
1625 inner_family=${1}
1626 outer_family=${2}
1627 encap=${3}
1628 ll_mtu=4000
1629
1630 setup namespaces routing ${encap}${outer_family}${inner_family} || return $ksft_skip
1631 trace "${ns_a}" ${encap}_a "${ns_b}" ${encap}_b \
1632 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1633 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1634
1635 if [ ${inner_family} -eq 4 ]; then
1636 ping=ping
1637 dst=${tunnel4_b_addr}
1638 else
1639 ping=${ping6}
1640 dst=${tunnel6_b_addr}
1641 fi
1642
1643 if [ "${encap}" = "gue" ]; then
1644 encap_overhead=4
1645 else
1646 encap_overhead=0
1647 fi
1648
1649 if [ ${outer_family} -eq 4 ]; then
1650 # IPv4 header UDP header
1651 exp_mtu=$((${ll_mtu} - 20 - 8 - ${encap_overhead}))
1652 else
1653 # IPv6 header Option 4 UDP header
1654 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - ${encap_overhead}))
1655 fi
1656
1657 # Create route exception by exceeding link layer MTU
1658 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1659 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1660 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1661 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1662
1663 mtu "${ns_a}" ${encap}_a $((${ll_mtu} + 1000))
1664 mtu "${ns_b}" ${encap}_b $((${ll_mtu} + 1000))
1665 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1666
1667 # Check that exception was created
1668 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1669 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ${encap} interface"
1670 }
1671
1672 test_pmtu_ipv4_fou4_exception() {
1673 test_pmtu_ipvX_over_fouY_or_gueY 4 4 fou
1674 }
1675
1676 test_pmtu_ipv6_fou4_exception() {
1677 test_pmtu_ipvX_over_fouY_or_gueY 6 4 fou
1678 }
1679
1680 test_pmtu_ipv4_fou6_exception() {
1681 test_pmtu_ipvX_over_fouY_or_gueY 4 6 fou
1682 }
1683
1684 test_pmtu_ipv6_fou6_exception() {
1685 test_pmtu_ipvX_over_fouY_or_gueY 6 6 fou
1686 }
1687
1688 test_pmtu_ipv4_gue4_exception() {
1689 test_pmtu_ipvX_over_fouY_or_gueY 4 4 gue
1690 }
1691
1692 test_pmtu_ipv6_gue4_exception() {
1693 test_pmtu_ipvX_over_fouY_or_gueY 6 4 gue
1694 }
1695
1696 test_pmtu_ipv4_gue6_exception() {
1697 test_pmtu_ipvX_over_fouY_or_gueY 4 6 gue
1698 }
1699
1700 test_pmtu_ipv6_gue6_exception() {
1701 test_pmtu_ipvX_over_fouY_or_gueY 6 6 gue
1702 }
1703
1704 test_pmtu_ipvX_over_ipvY_exception() {
1705 inner=${1}
1706 outer=${2}
1707 ll_mtu=4000
1708
1709 setup namespaces routing ip${inner}ip${outer} || return $ksft_skip
1710
1711 trace "${ns_a}" ip_a "${ns_b}" ip_b \
1712 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1713 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1714
1715 if [ ${inner} -eq 4 ]; then
1716 ping=ping
1717 dst=${tunnel4_b_addr}
1718 else
1719 ping=${ping6}
1720 dst=${tunnel6_b_addr}
1721 fi
1722
1723 if [ ${outer} -eq 4 ]; then
1724 # IPv4 header
1725 exp_mtu=$((${ll_mtu} - 20))
1726 else
1727 # IPv6 header Option 4
1728 exp_mtu=$((${ll_mtu} - 40 - 8))
1729 fi
1730
1731 # Create route exception by exceeding link layer MTU
1732 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1733 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1734 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1735 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1736
1737 mtu "${ns_a}" ip_a $((${ll_mtu} + 1000)) || return
1738 mtu "${ns_b}" ip_b $((${ll_mtu} + 1000)) || return
1739 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1740
1741 # Check that exception was created
1742 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1743 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ip${inner}ip${outer} interface"
1744 }
1745
1746 test_pmtu_ipv4_ipv4_exception() {
1747 test_pmtu_ipvX_over_ipvY_exception 4 4
1748 }
1749
1750 test_pmtu_ipv6_ipv4_exception() {
1751 test_pmtu_ipvX_over_ipvY_exception 6 4
1752 }
1753
1754 test_pmtu_ipv4_ipv6_exception() {
1755 test_pmtu_ipvX_over_ipvY_exception 4 6
1756 }
1757
1758 test_pmtu_ipv6_ipv6_exception() {
1759 test_pmtu_ipvX_over_ipvY_exception 6 6
1760 }
1761
1762 test_pmtu_vti4_exception() {
1763 setup namespaces veth vti4 xfrm4 || return $ksft_skip
1764 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1765 "${ns_a}" vti4_a "${ns_b}" vti4_b
1766
1767 veth_mtu=1500
1768 vti_mtu=$((veth_mtu - 20))
1769
1770 # SPI SN IV ICV pad length next header
1771 esp_payload_rfc4106=$((vti_mtu - 4 - 4 - 8 - 16 - 1 - 1))
1772 ping_payload=$((esp_payload_rfc4106 - 28))
1773
1774 mtu "${ns_a}" veth_a ${veth_mtu}
1775 mtu "${ns_b}" veth_b ${veth_mtu}
1776 mtu "${ns_a}" vti4_a ${vti_mtu}
1777 mtu "${ns_b}" vti4_b ${vti_mtu}
1778
1779 # Send DF packet without exceeding link layer MTU, check that no
1780 # exception is created
1781 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s ${ping_payload} ${tunnel4_b_addr}
1782 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1783 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1784
1785 # Now exceed link layer MTU by one byte, check that exception is created
1786 # with the right PMTU value
1787 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s $((ping_payload + 1)) ${tunnel4_b_addr}
1788 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1789 check_pmtu_value "${esp_payload_rfc4106}" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106 + 1)))"
1790 }
1791
1792 test_pmtu_vti6_exception() {
1793 setup namespaces veth vti6 xfrm6 || return $ksft_skip
1794 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1795 "${ns_a}" vti6_a "${ns_b}" vti6_b
1796 fail=0
1797
1798 # Create route exception by exceeding link layer MTU
1799 mtu "${ns_a}" veth_a 4000
1800 mtu "${ns_b}" veth_b 4000
1801 mtu "${ns_a}" vti6_a 5000
1802 mtu "${ns_b}" vti6_b 5000
1803 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1 -s 60000 ${tunnel6_b_addr}
1804
1805 # Check that exception was created
1806 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1807 check_pmtu_value any "${pmtu}" "creating tunnel exceeding link layer MTU" || return 1
1808
1809 # Decrease tunnel MTU, check for PMTU decrease in route exception
1810 mtu "${ns_a}" vti6_a 3000
1811 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1812 check_pmtu_value "3000" "${pmtu}" "decreasing tunnel MTU" || fail=1
1813
1814 # Increase tunnel MTU, check for PMTU increase in route exception
1815 mtu "${ns_a}" vti6_a 9000
1816 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1817 check_pmtu_value "9000" "${pmtu}" "increasing tunnel MTU" || fail=1
1818
1819 return ${fail}
1820 }
1821
1822 test_pmtu_vti4_udp_exception() {
1823 setup namespaces veth vti4 xfrm4udp || return $ksft_skip
1824 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1825 "${ns_a}" vti4_a "${ns_b}" vti4_b
1826
1827 veth_mtu=1500
1828 vti_mtu=$((veth_mtu - 20))
1829
1830 # UDP SPI SN IV ICV pad length next header
1831 esp_payload_rfc4106=$((vti_mtu - 8 - 4 - 4 - 8 - 16 - 1 - 1))
1832 ping_payload=$((esp_payload_rfc4106 - 28))
1833
1834 mtu "${ns_a}" veth_a ${veth_mtu}
1835 mtu "${ns_b}" veth_b ${veth_mtu}
1836 mtu "${ns_a}" vti4_a ${vti_mtu}
1837 mtu "${ns_b}" vti4_b ${vti_mtu}
1838
1839 # Send DF packet without exceeding link layer MTU, check that no
1840 # exception is created
1841 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s ${ping_payload} ${tunnel4_b_addr}
1842 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1843 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1844
1845 # Now exceed link layer MTU by one byte, check that exception is created
1846 # with the right PMTU value
1847 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s $((ping_payload + 1)) ${tunnel4_b_addr}
1848 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1849 check_pmtu_value "${esp_payload_rfc4106}" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106 + 1)))"
1850 }
1851
1852 test_pmtu_vti6_udp_exception() {
1853 setup namespaces veth vti6 xfrm6udp || return $ksft_skip
1854 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1855 "${ns_a}" vti6_a "${ns_b}" vti6_b
1856 fail=0
1857
1858 # Create route exception by exceeding link layer MTU
1859 mtu "${ns_a}" veth_a 4000
1860 mtu "${ns_b}" veth_b 4000
1861 mtu "${ns_a}" vti6_a 5000
1862 mtu "${ns_b}" vti6_b 5000
1863 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1 -s 60000 ${tunnel6_b_addr}
1864
1865 # Check that exception was created
1866 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1867 check_pmtu_value any "${pmtu}" "creating tunnel exceeding link layer MTU" || return 1
1868
1869 # Decrease tunnel MTU, check for PMTU decrease in route exception
1870 mtu "${ns_a}" vti6_a 3000
1871 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1872 check_pmtu_value "3000" "${pmtu}" "decreasing tunnel MTU" || fail=1
1873
1874 # Increase tunnel MTU, check for PMTU increase in route exception
1875 mtu "${ns_a}" vti6_a 9000
1876 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1877 check_pmtu_value "9000" "${pmtu}" "increasing tunnel MTU" || fail=1
1878
1879 return ${fail}
1880 }
1881
1882 test_pmtu_vti4_udp_routed_exception() {
1883 setup namespaces routing vti4routed xfrm4udprouted || return $ksft_skip
1884 trace "${ns_a}" veth_A-R1 "${ns_b}" veth_B-R1 \
1885 "${ns_a}" vti4_a "${ns_b}" vti4_b
1886
1887 veth_mtu=1500
1888 vti_mtu=$((veth_mtu - 20))
1889
1890 # UDP SPI SN IV ICV pad length next header
1891 esp_payload_rfc4106=$((vti_mtu - 8 - 4 - 4 - 8 - 16 - 1 - 1))
1892 ping_payload=$((esp_payload_rfc4106 - 28))
1893
1894 mtu "${ns_a}" veth_A-R1 ${veth_mtu}
1895 mtu "${ns_r1}" veth_R1-A ${veth_mtu}
1896 mtu "${ns_b}" veth_B-R1 ${veth_mtu}
1897 mtu "${ns_r1}" veth_R1-B ${veth_mtu}
1898
1899 mtu "${ns_a}" vti4_a ${vti_mtu}
1900 mtu "${ns_b}" vti4_b ${vti_mtu}
1901
1902 # Send DF packet without exceeding link layer MTU, check that no
1903 # exception is created
1904 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s ${ping_payload} ${tunnel4_b_addr}
1905 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1906 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1907
1908 # Now decrease link layer MTU by 8 bytes on R1, check that exception is created
1909 # with the right PMTU value
1910 mtu "${ns_r1}" veth_R1-B $((veth_mtu - 8))
1911 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s $((ping_payload)) ${tunnel4_b_addr}
1912 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1913 check_pmtu_value "$((esp_payload_rfc4106 - 8))" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106)))"
1914 }
1915
1916 test_pmtu_vti6_udp_routed_exception() {
1917 setup namespaces routing vti6routed xfrm6udprouted || return $ksft_skip
1918 trace "${ns_a}" veth_A-R1 "${ns_b}" veth_B-R1 \
1919 "${ns_a}" vti6_a "${ns_b}" vti6_b
1920
1921 veth_mtu=1500
1922 vti_mtu=$((veth_mtu - 40))
1923
1924 # UDP SPI SN IV ICV pad length next header
1925 esp_payload_rfc4106=$((vti_mtu - 8 - 4 - 4 - 8 - 16 - 1 - 1))
1926 ping_payload=$((esp_payload_rfc4106 - 48))
1927
1928 mtu "${ns_a}" veth_A-R1 ${veth_mtu}
1929 mtu "${ns_r1}" veth_R1-A ${veth_mtu}
1930 mtu "${ns_b}" veth_B-R1 ${veth_mtu}
1931 mtu "${ns_r1}" veth_R1-B ${veth_mtu}
1932
1933 # mtu "${ns_a}" vti6_a ${vti_mtu}
1934 # mtu "${ns_b}" vti6_b ${vti_mtu}
1935
1936 run_cmd ${ns_a} ${ping6} -q -M want -i 0.1 -w 1 -s ${ping_payload} ${tunnel6_b_addr}
1937
1938 # Check that exception was not created
1939 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1940 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1941
1942 # Now decrease link layer MTU by 8 bytes on R1, check that exception is created
1943 # with the right PMTU value
1944 mtu "${ns_r1}" veth_R1-B $((veth_mtu - 8))
1945 run_cmd ${ns_a} ${ping6} -q -M want -i 0.1 -w 1 -s $((ping_payload)) ${tunnel6_b_addr}
1946 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1947 check_pmtu_value "$((esp_payload_rfc4106 - 8))" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106)))"
1948
1949 }
1950
1951 test_pmtu_vti4_default_mtu() {
1952 setup namespaces veth vti4 || return $ksft_skip
1953
1954 # Check that MTU of vti device is MTU of veth minus IPv4 header length
1955 veth_mtu="$(link_get_mtu "${ns_a}" veth_a)"
1956 vti4_mtu="$(link_get_mtu "${ns_a}" vti4_a)"
1957 if [ $((veth_mtu - vti4_mtu)) -ne 20 ]; then
1958 err " vti MTU ${vti4_mtu} is not veth MTU ${veth_mtu} minus IPv4 header length"
1959 return 1
1960 fi
1961 }
1962
1963 test_pmtu_vti6_default_mtu() {
1964 setup namespaces veth vti6 || return $ksft_skip
1965
1966 # Check that MTU of vti device is MTU of veth minus IPv6 header length
1967 veth_mtu="$(link_get_mtu "${ns_a}" veth_a)"
1968 vti6_mtu="$(link_get_mtu "${ns_a}" vti6_a)"
1969 if [ $((veth_mtu - vti6_mtu)) -ne 40 ]; then
1970 err " vti MTU ${vti6_mtu} is not veth MTU ${veth_mtu} minus IPv6 header length"
1971 return 1
1972 fi
1973 }
1974
1975 test_pmtu_vti4_link_add_mtu() {
1976 setup namespaces || return $ksft_skip
1977
1978 run_cmd ${ns_a} ip link add vti4_a type vti local ${veth4_a_addr} remote ${veth4_b_addr} key 10
1979 [ $? -ne 0 ] && err " vti not supported" && return $ksft_skip
1980 run_cmd ${ns_a} ip link del vti4_a
1981
1982 fail=0
1983
1984 min=68
1985 max=$((65535 - 20))
1986 # Check invalid values first
1987 for v in $((min - 1)) $((max + 1)); do
1988 run_cmd ${ns_a} ip link add vti4_a mtu ${v} type vti local ${veth4_a_addr} remote ${veth4_b_addr} key 10
1989 # This can fail, or MTU can be adjusted to a proper value
1990 [ $? -ne 0 ] && continue
1991 mtu="$(link_get_mtu "${ns_a}" vti4_a)"
1992 if [ ${mtu} -lt ${min} -o ${mtu} -gt ${max} ]; then
1993 err " vti tunnel created with invalid MTU ${mtu}"
1994 fail=1
1995 fi
1996 run_cmd ${ns_a} ip link del vti4_a
1997 done
1998
1999 # Now check valid values
2000 for v in ${min} 1300 ${max}; do
2001 run_cmd ${ns_a} ip link add vti4_a mtu ${v} type vti local ${veth4_a_addr} remote ${veth4_b_addr} key 10
2002 mtu="$(link_get_mtu "${ns_a}" vti4_a)"
2003 run_cmd ${ns_a} ip link del vti4_a
2004 if [ "${mtu}" != "${v}" ]; then
2005 err " vti MTU ${mtu} doesn't match configured value ${v}"
2006 fail=1
2007 fi
2008 done
2009
2010 return ${fail}
2011 }
2012
2013 test_pmtu_vti6_link_add_mtu() {
2014 setup namespaces || return $ksft_skip
2015
2016 run_cmd ${ns_a} ip link add vti6_a type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10
2017 [ $? -ne 0 ] && err " vti6 not supported" && return $ksft_skip
2018 run_cmd ${ns_a} ip link del vti6_a
2019
2020 fail=0
2021
2022 min=68 # vti6 can carry IPv4 packets too
2023 max=$((65535 - 40))
2024 # Check invalid values first
2025 for v in $((min - 1)) $((max + 1)); do
2026 run_cmd ${ns_a} ip link add vti6_a mtu ${v} type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10
2027 # This can fail, or MTU can be adjusted to a proper value
2028 [ $? -ne 0 ] && continue
2029 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2030 if [ ${mtu} -lt ${min} -o ${mtu} -gt ${max} ]; then
2031 err " vti6 tunnel created with invalid MTU ${v}"
2032 fail=1
2033 fi
2034 run_cmd ${ns_a} ip link del vti6_a
2035 done
2036
2037 # Now check valid values
2038 for v in 68 1280 1300 $((65535 - 40)); do
2039 run_cmd ${ns_a} ip link add vti6_a mtu ${v} type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10
2040 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2041 run_cmd ${ns_a} ip link del vti6_a
2042 if [ "${mtu}" != "${v}" ]; then
2043 err " vti6 MTU ${mtu} doesn't match configured value ${v}"
2044 fail=1
2045 fi
2046 done
2047
2048 return ${fail}
2049 }
2050
2051 test_pmtu_vti6_link_change_mtu() {
2052 setup namespaces || return $ksft_skip
2053
2054 run_cmd ${ns_a} ip link add dummy0 mtu 1500 type dummy
2055 [ $? -ne 0 ] && err " dummy not supported" && return $ksft_skip
2056 run_cmd ${ns_a} ip link add dummy1 mtu 3000 type dummy
2057 run_cmd ${ns_a} ip link set dummy0 up
2058 run_cmd ${ns_a} ip link set dummy1 up
2059
2060 run_cmd ${ns_a} ip addr add ${dummy6_0_prefix}1/${dummy6_mask} dev dummy0
2061 run_cmd ${ns_a} ip addr add ${dummy6_1_prefix}1/${dummy6_mask} dev dummy1
2062
2063 fail=0
2064
2065 # Create vti6 interface bound to device, passing MTU, check it
2066 run_cmd ${ns_a} ip link add vti6_a mtu 1300 type vti6 remote ${dummy6_0_prefix}2 local ${dummy6_0_prefix}1
2067 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2068 if [ ${mtu} -ne 1300 ]; then
2069 err " vti6 MTU ${mtu} doesn't match configured value 1300"
2070 fail=1
2071 fi
2072
2073 # Move to another device with different MTU, without passing MTU, check
2074 # MTU is adjusted
2075 run_cmd ${ns_a} ip link set vti6_a type vti6 remote ${dummy6_1_prefix}2 local ${dummy6_1_prefix}1
2076 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2077 if [ ${mtu} -ne $((3000 - 40)) ]; then
2078 err " vti MTU ${mtu} is not dummy MTU 3000 minus IPv6 header length"
2079 fail=1
2080 fi
2081
2082 # Move it back, passing MTU, check MTU is not overridden
2083 run_cmd ${ns_a} ip link set vti6_a mtu 1280 type vti6 remote ${dummy6_0_prefix}2 local ${dummy6_0_prefix}1
2084 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2085 if [ ${mtu} -ne 1280 ]; then
2086 err " vti6 MTU ${mtu} doesn't match configured value 1280"
2087 fail=1
2088 fi
2089
2090 return ${fail}
2091 }
2092
2093 check_command() {
2094 cmd=${1}
2095
2096 if ! which ${cmd} > /dev/null 2>&1; then
2097 err " missing required command: '${cmd}'"
2098 return 1
2099 fi
2100 return 0
2101 }
2102
2103 check_running() {
2104 pid=${1}
2105 cmd=${2}
2106
2107 [ "$(cat /proc/${pid}/cmdline 2>/dev/null | tr -d '\0')" = "${cmd}" ]
2108 }
2109
2110 test_cleanup_vxlanX_exception() {
2111 outer="${1}"
2112 encap="vxlan"
2113 ll_mtu=4000
2114
2115 check_command taskset || return $ksft_skip
2116 cpu_list=$(grep -m 2 processor /proc/cpuinfo | cut -d ' ' -f 2)
2117
2118 setup namespaces routing ${encap}${outer} || return $ksft_skip
2119 trace "${ns_a}" ${encap}_a "${ns_b}" ${encap}_b \
2120 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2121 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
2122
2123 # Create route exception by exceeding link layer MTU
2124 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
2125 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
2126 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
2127 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
2128
2129 mtu "${ns_a}" ${encap}_a $((${ll_mtu} + 1000))
2130 mtu "${ns_b}" ${encap}_b $((${ll_mtu} + 1000))
2131
2132 # Fill exception cache for multiple CPUs (2)
2133 # we can always use inner IPv4 for that
2134 for cpu in ${cpu_list}; do
2135 run_cmd taskset --cpu-list ${cpu} ${ns_a} ping -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${tunnel4_b_addr}
2136 done
2137
2138 ${ns_a} ip link del dev veth_A-R1 &
2139 iplink_pid=$!
2140 for i in $(seq 1 20); do
2141 check_running ${iplink_pid} "iplinkdeldevveth_A-R1" || return 0
2142 sleep 0.1
2143 done
2144 err " can't delete veth device in a timely manner, PMTU dst likely leaked"
2145 return 1
2146 }
2147
2148 test_cleanup_ipv6_exception() {
2149 test_cleanup_vxlanX_exception 6
2150 }
2151
2152 test_cleanup_ipv4_exception() {
2153 test_cleanup_vxlanX_exception 4
2154 }
2155
2156 run_test() {
2157 (
2158 tname="$1"
2159 tdesc="$2"
2160
2161 unset IFS
2162
2163 # Since cleanup() relies on variables modified by this subshell, it
2164 # has to run in this context.
2165 trap cleanup EXIT
2166
2167 if [ "$VERBOSE" = "1" ]; then
2168 printf "\n##########################################################################\n\n"
2169 fi
2170
2171 eval test_${tname}
2172 ret=$?
2173
2174 if [ $ret -eq 0 ]; then
2175 printf "TEST: %-60s [ OK ]\n" "${tdesc}"
2176 elif [ $ret -eq 1 ]; then
2177 printf "TEST: %-60s [FAIL]\n" "${tdesc}"
2178 if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
2179 echo
2180 echo "Pausing. Hit enter to continue"
2181 read a
2182 fi
2183 err_flush
2184 exit 1
2185 elif [ $ret -eq $ksft_skip ]; then
2186 printf "TEST: %-60s [SKIP]\n" "${tdesc}"
2187 err_flush
2188 fi
2189
2190 return $ret
2191 )
2192 ret=$?
2193 case $ret in
2194 0)
2195 all_skipped=false
2196 [ $exitcode -eq $ksft_skip ] && exitcode=0
2197 ;;
2198 $ksft_skip)
2199 [ $all_skipped = true ] && exitcode=$ksft_skip
2200 ;;
2201 *)
2202 all_skipped=false
2203 exitcode=1
2204 ;;
2205 esac
2206
2207 return $ret
2208 }
2209
2210 run_test_nh() {
2211 tname="$1"
2212 tdesc="$2"
2213
2214 USE_NH=yes
2215 run_test "${tname}" "${tdesc} - nexthop objects"
2216 USE_NH=no
2217 }
2218
2219 test_list_flush_ipv4_exception() {
2220 setup namespaces routing || return $ksft_skip
2221 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2222 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2223 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2224 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2225
2226 dst_prefix1="${prefix4}.${b_r1}."
2227 dst2="${prefix4}.${b_r2}.1"
2228
2229 # Set up initial MTU values
2230 mtu "${ns_a}" veth_A-R1 2000
2231 mtu "${ns_r1}" veth_R1-A 2000
2232 mtu "${ns_r1}" veth_R1-B 1500
2233 mtu "${ns_b}" veth_B-R1 1500
2234
2235 mtu "${ns_a}" veth_A-R2 2000
2236 mtu "${ns_r2}" veth_R2-A 2000
2237 mtu "${ns_r2}" veth_R2-B 1500
2238 mtu "${ns_b}" veth_B-R2 1500
2239
2240 fail=0
2241
2242 # Add 100 addresses for veth endpoint on B reached by default A route
2243 for i in $(seq 100 199); do
2244 run_cmd ${ns_b} ip addr add "${dst_prefix1}${i}" dev veth_B-R1
2245 done
2246
2247 # Create 100 cached route exceptions for path via R1, one via R2. Note
2248 # that with IPv4 we need to actually cause a route lookup that matches
2249 # the exception caused by ICMP, in order to actually have a cached
2250 # route, so we need to ping each destination twice
2251 for i in $(seq 100 199); do
2252 run_cmd ${ns_a} ping -q -M want -i 0.1 -c 2 -s 1800 "${dst_prefix1}${i}"
2253 done
2254 run_cmd ${ns_a} ping -q -M want -i 0.1 -c 2 -s 1800 "${dst2}"
2255
2256 if [ "$(${ns_a} ip -oneline route list cache | wc -l)" -ne 101 ]; then
2257 err " can't list cached exceptions"
2258 fail=1
2259 fi
2260
2261 run_cmd ${ns_a} ip route flush cache
2262 pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst_prefix}1)"
2263 pmtu2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst_prefix}2)"
2264 if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ] || \
2265 [ -n "$(${ns_a} ip route list cache)" ]; then
2266 err " can't flush cached exceptions"
2267 fail=1
2268 fi
2269
2270 return ${fail}
2271 }
2272
2273 test_list_flush_ipv6_exception() {
2274 setup namespaces routing || return $ksft_skip
2275 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2276 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2277 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2278 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2279
2280 dst_prefix1="${prefix6}:${b_r1}::"
2281 dst2="${prefix6}:${b_r2}::1"
2282
2283 # Set up initial MTU values
2284 mtu "${ns_a}" veth_A-R1 2000
2285 mtu "${ns_r1}" veth_R1-A 2000
2286 mtu "${ns_r1}" veth_R1-B 1500
2287 mtu "${ns_b}" veth_B-R1 1500
2288
2289 mtu "${ns_a}" veth_A-R2 2000
2290 mtu "${ns_r2}" veth_R2-A 2000
2291 mtu "${ns_r2}" veth_R2-B 1500
2292 mtu "${ns_b}" veth_B-R2 1500
2293
2294 fail=0
2295
2296 # Add 100 addresses for veth endpoint on B reached by default A route
2297 for i in $(seq 100 199); do
2298 run_cmd ${ns_b} ip addr add "${dst_prefix1}${i}" dev veth_B-R1
2299 done
2300
2301 # Create 100 cached route exceptions for path via R1, one via R2
2302 for i in $(seq 100 199); do
2303 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst_prefix1}${i}"
2304 done
2305 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst2}"
2306 if [ "$(${ns_a} ip -oneline -6 route list cache | wc -l)" -ne 101 ]; then
2307 err " can't list cached exceptions"
2308 fail=1
2309 fi
2310
2311 run_cmd ${ns_a} ip -6 route flush cache
2312 pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst_prefix1}100")"
2313 pmtu2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
2314 if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ] || \
2315 [ -n "$(${ns_a} ip -6 route list cache)" ]; then
2316 err " can't flush cached exceptions"
2317 fail=1
2318 fi
2319
2320 return ${fail}
2321 }
2322
2323 test_pmtu_ipvX_route_change() {
2324 family=${1}
2325
2326 setup namespaces routing || return 2
2327 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2328 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2329 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2330 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2331
2332 if [ ${family} -eq 4 ]; then
2333 ping=ping
2334 dst1="${prefix4}.${b_r1}.1"
2335 dst2="${prefix4}.${b_r2}.1"
2336 gw="${prefix4}.${a_r1}.2"
2337 else
2338 ping=${ping6}
2339 dst1="${prefix6}:${b_r1}::1"
2340 dst2="${prefix6}:${b_r2}::1"
2341 gw="${prefix6}:${a_r1}::2"
2342 fi
2343
2344 # Set up initial MTU values
2345 mtu "${ns_a}" veth_A-R1 2000
2346 mtu "${ns_r1}" veth_R1-A 2000
2347 mtu "${ns_r1}" veth_R1-B 1400
2348 mtu "${ns_b}" veth_B-R1 1400
2349
2350 mtu "${ns_a}" veth_A-R2 2000
2351 mtu "${ns_r2}" veth_R2-A 2000
2352 mtu "${ns_r2}" veth_R2-B 1500
2353 mtu "${ns_b}" veth_B-R2 1500
2354
2355 # Create route exceptions
2356 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst1}
2357 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst2}
2358
2359 # Check that exceptions have been created with the correct PMTU
2360 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
2361 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
2362 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
2363 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
2364
2365 # Replace the route from A to R1
2366 run_cmd ${ns_a} ip route change default via ${gw}
2367
2368 # Delete the device in A
2369 run_cmd ${ns_a} ip link del "veth_A-R1"
2370 }
2371
2372 test_pmtu_ipv4_route_change() {
2373 test_pmtu_ipvX_route_change 4
2374 }
2375
2376 test_pmtu_ipv6_route_change() {
2377 test_pmtu_ipvX_route_change 6
2378 }
2379
2380 test_pmtu_ipv4_mp_exceptions() {
2381 setup namespaces routing multipath || return $ksft_skip
2382
2383 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2384 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2385 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2386 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2387
2388 # Set up initial MTU values
2389 mtu "${ns_a}" veth_A-R1 2000
2390 mtu "${ns_r1}" veth_R1-A 2000
2391 mtu "${ns_r1}" veth_R1-B 1500
2392 mtu "${ns_b}" veth_B-R1 1500
2393
2394 mtu "${ns_a}" veth_A-R2 2000
2395 mtu "${ns_r2}" veth_R2-A 2000
2396 mtu "${ns_r2}" veth_R2-B 1500
2397 mtu "${ns_b}" veth_B-R2 1500
2398
2399 # Ping and expect two nexthop exceptions for two routes
2400 run_cmd ${ns_a} ping -q -M want -i 0.1 -c 1 -s 1800 "${host4_b_addr}"
2401
2402 # Check that exceptions have been created with the correct PMTU
2403 pmtu_a_R1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${host4_b_addr}" oif veth_A-R1)"
2404 pmtu_a_R2="$(route_get_dst_pmtu_from_exception "${ns_a}" "${host4_b_addr}" oif veth_A-R2)"
2405
2406 check_pmtu_value "1500" "${pmtu_a_R1}" "exceeding MTU (veth_A-R1)" || return 1
2407 check_pmtu_value "1500" "${pmtu_a_R2}" "exceeding MTU (veth_A-R2)" || return 1
2408 }
2409
2410 usage() {
2411 echo
2412 echo "$0 [OPTIONS] [TEST]..."
2413 echo "If no TEST argument is given, all tests will be run."
2414 echo
2415 echo "Options"
2416 echo " --trace: capture traffic to TEST_INTERFACE.pcap"
2417 echo
2418 echo "Available tests${tests}"
2419 exit 1
2420 }
2421
2422 ################################################################################
2423 #
2424 exitcode=0
2425 desc=0
2426 all_skipped=true
2427
2428 while getopts :ptv o
2429 do
2430 case $o in
2431 p) PAUSE_ON_FAIL=yes;;
2432 v) VERBOSE=1;;
2433 t) if which tcpdump > /dev/null 2>&1; then
2434 TRACING=1
2435 else
2436 echo "=== tcpdump not available, tracing disabled"
2437 fi
2438 ;;
2439 *) usage;;
2440 esac
2441 done
2442 shift $(($OPTIND-1))
2443
2444 IFS="
2445 "
2446
2447 for arg do
2448 # Check first that all requested tests are available before running any
2449 command -v > /dev/null "test_${arg}" || { echo "=== Test ${arg} not found"; usage; }
2450 done
2451
2452 trap cleanup EXIT
2453
2454 # start clean
2455 cleanup
2456
2457 HAVE_NH=no
2458 ip nexthop ls >/dev/null 2>&1
2459 [ $? -eq 0 ] && HAVE_NH=yes
2460
2461 name=""
2462 desc=""
2463 rerun_nh=0
2464 for t in ${tests}; do
2465 [ "${name}" = "" ] && name="${t}" && continue
2466 [ "${desc}" = "" ] && desc="${t}" && continue
2467
2468 if [ "${HAVE_NH}" = "yes" ]; then
2469 rerun_nh="${t}"
2470 fi
2471
2472 run_this=1
2473 for arg do
2474 [ "${arg}" != "${arg#--*}" ] && continue
2475 [ "${arg}" = "${name}" ] && run_this=1 && break
2476 run_this=0
2477 done
2478 if [ $run_this -eq 1 ]; then
2479 run_test "${name}" "${desc}"
2480 # if test was skipped no need to retry with nexthop objects
2481 [ $? -eq $ksft_skip ] && rerun_nh=0
2482
2483 if [ "${rerun_nh}" = "1" ]; then
2484 run_test_nh "${name}" "${desc}"
2485 fi
2486 fi
2487 name=""
2488 desc=""
2489 rerun_nh=0
2490 done
2491
2492 exit ${exitcode}
Kernel DRM miscellaneous fixes and cross-tree changes