]>
Commit | Line | Data |
---|---|---|
5e5034b0 DL |
1 | /* |
2 | * PIMv6 MLD querier | |
3 | * Copyright (C) 2021-2022 David Lamparter for NetDEF, Inc. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License as published by the Free | |
7 | * Software Foundation; either version 2 of the License, or (at your option) | |
8 | * any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; see the file COPYING; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
19 | ||
20 | /* | |
21 | * keep pim6_mld.h open when working on this code. Most data structures are | |
22 | * commented in the header. | |
23 | * | |
24 | * IPv4 support is pre-planned but hasn't been tackled yet. It is intended | |
25 | * that this code will replace the old IGMP querier at some point. | |
26 | */ | |
27 | ||
28 | #include <zebra.h> | |
29 | #include <netinet/ip6.h> | |
30 | ||
31 | #include "lib/memory.h" | |
32 | #include "lib/jhash.h" | |
33 | #include "lib/prefix.h" | |
34 | #include "lib/checksum.h" | |
35 | #include "lib/thread.h" | |
cdc1b770 | 36 | #include "termtable.h" |
5e5034b0 DL |
37 | |
38 | #include "pimd/pim6_mld.h" | |
39 | #include "pimd/pim6_mld_protocol.h" | |
40 | #include "pimd/pim_memory.h" | |
41 | #include "pimd/pim_instance.h" | |
42 | #include "pimd/pim_iface.h" | |
cdc1b770 SG |
43 | #include "pimd/pim6_cmd.h" |
44 | #include "pimd/pim_cmd_common.h" | |
5e5034b0 DL |
45 | #include "pimd/pim_util.h" |
46 | #include "pimd/pim_tib.h" | |
47 | #include "pimd/pimd.h" | |
48 | ||
49 | #ifndef IPV6_MULTICAST_ALL | |
50 | #define IPV6_MULTICAST_ALL 29 | |
51 | #endif | |
52 | ||
53 | DEFINE_MTYPE_STATIC(PIMD, GM_IFACE, "MLD interface"); | |
54 | DEFINE_MTYPE_STATIC(PIMD, GM_PACKET, "MLD packet"); | |
55 | DEFINE_MTYPE_STATIC(PIMD, GM_SUBSCRIBER, "MLD subscriber"); | |
56 | DEFINE_MTYPE_STATIC(PIMD, GM_STATE, "MLD subscription state"); | |
57 | DEFINE_MTYPE_STATIC(PIMD, GM_SG, "MLD (S,G)"); | |
58 | DEFINE_MTYPE_STATIC(PIMD, GM_GRP_PENDING, "MLD group query state"); | |
59 | DEFINE_MTYPE_STATIC(PIMD, GM_GSQ_PENDING, "MLD group/source query aggregate"); | |
60 | ||
61 | static void gm_t_query(struct thread *t); | |
62 | static void gm_trigger_specific(struct gm_sg *sg); | |
63 | static void gm_sg_timer_start(struct gm_if *gm_ifp, struct gm_sg *sg, | |
64 | struct timeval expire_wait); | |
65 | ||
66 | /* shorthand for log messages */ | |
67 | #define log_ifp(msg) \ | |
68 | "[MLD %s:%s] " msg, gm_ifp->ifp->vrf->name, gm_ifp->ifp->name | |
69 | #define log_pkt_src(msg) \ | |
70 | "[MLD %s:%s %pI6] " msg, gm_ifp->ifp->vrf->name, gm_ifp->ifp->name, \ | |
71 | &pkt_src->sin6_addr | |
72 | #define log_sg(sg, msg) \ | |
73 | "[MLD %s:%s %pSG] " msg, sg->iface->ifp->vrf->name, \ | |
74 | sg->iface->ifp->name, &sg->sgaddr | |
75 | ||
76 | /* clang-format off */ | |
77 | #if PIM_IPV == 6 | |
78 | static const pim_addr gm_all_hosts = { | |
79 | .s6_addr = { | |
80 | 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
81 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, | |
82 | }, | |
83 | }; | |
84 | static const pim_addr gm_all_routers = { | |
85 | .s6_addr = { | |
86 | 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
87 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16, | |
88 | }, | |
89 | }; | |
90 | /* MLDv1 does not allow subscriber tracking due to report suppression | |
91 | * hence, the source address is replaced with ffff:...:ffff | |
92 | */ | |
93 | static const pim_addr gm_dummy_untracked = { | |
94 | .s6_addr = { | |
95 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
96 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
97 | }, | |
98 | }; | |
99 | #else | |
100 | /* 224.0.0.1 */ | |
101 | static const pim_addr gm_all_hosts = { .s_addr = htonl(0xe0000001), }; | |
102 | /* 224.0.0.22 */ | |
103 | static const pim_addr gm_all_routers = { .s_addr = htonl(0xe0000016), }; | |
104 | static const pim_addr gm_dummy_untracked = { .s_addr = 0xffffffff, }; | |
105 | #endif | |
106 | /* clang-format on */ | |
107 | ||
108 | #define IPV6_MULTICAST_SCOPE_LINK 2 | |
109 | ||
110 | static inline uint8_t in6_multicast_scope(const pim_addr *addr) | |
111 | { | |
112 | return addr->s6_addr[1] & 0xf; | |
113 | } | |
114 | ||
115 | static inline bool in6_multicast_nofwd(const pim_addr *addr) | |
116 | { | |
117 | return in6_multicast_scope(addr) <= IPV6_MULTICAST_SCOPE_LINK; | |
118 | } | |
119 | ||
120 | /* | |
121 | * (S,G) -> subscriber,(S,G) | |
122 | */ | |
123 | ||
124 | static int gm_packet_sg_cmp(const struct gm_packet_sg *a, | |
125 | const struct gm_packet_sg *b) | |
126 | { | |
127 | const struct gm_packet_state *s_a, *s_b; | |
128 | ||
129 | s_a = gm_packet_sg2state(a); | |
130 | s_b = gm_packet_sg2state(b); | |
131 | return IPV6_ADDR_CMP(&s_a->subscriber->addr, &s_b->subscriber->addr); | |
132 | } | |
133 | ||
134 | DECLARE_RBTREE_UNIQ(gm_packet_sg_subs, struct gm_packet_sg, subs_itm, | |
135 | gm_packet_sg_cmp); | |
136 | ||
137 | static struct gm_packet_sg *gm_packet_sg_find(struct gm_sg *sg, | |
138 | enum gm_sub_sense sense, | |
139 | struct gm_subscriber *sub) | |
140 | { | |
141 | struct { | |
142 | struct gm_packet_state hdr; | |
143 | struct gm_packet_sg item; | |
144 | } ref = { | |
145 | /* clang-format off */ | |
146 | .hdr = { | |
147 | .subscriber = sub, | |
148 | }, | |
149 | .item = { | |
150 | .offset = 0, | |
151 | }, | |
152 | /* clang-format on */ | |
153 | }; | |
154 | ||
155 | return gm_packet_sg_subs_find(&sg->subs[sense], &ref.item); | |
156 | } | |
157 | ||
158 | /* | |
159 | * interface -> (*,G),pending | |
160 | */ | |
161 | ||
162 | static int gm_grp_pending_cmp(const struct gm_grp_pending *a, | |
163 | const struct gm_grp_pending *b) | |
164 | { | |
165 | return IPV6_ADDR_CMP(&a->grp, &b->grp); | |
166 | } | |
167 | ||
168 | DECLARE_RBTREE_UNIQ(gm_grp_pends, struct gm_grp_pending, itm, | |
169 | gm_grp_pending_cmp); | |
170 | ||
171 | /* | |
172 | * interface -> ([S1,S2,...],G),pending | |
173 | */ | |
174 | ||
175 | static int gm_gsq_pending_cmp(const struct gm_gsq_pending *a, | |
176 | const struct gm_gsq_pending *b) | |
177 | { | |
178 | if (a->s_bit != b->s_bit) | |
179 | return numcmp(a->s_bit, b->s_bit); | |
180 | ||
181 | return IPV6_ADDR_CMP(&a->grp, &b->grp); | |
182 | } | |
183 | ||
184 | static uint32_t gm_gsq_pending_hash(const struct gm_gsq_pending *a) | |
185 | { | |
186 | uint32_t seed = a->s_bit ? 0x68f0eb5e : 0x156b7f19; | |
187 | ||
188 | return jhash(&a->grp, sizeof(a->grp), seed); | |
189 | } | |
190 | ||
191 | DECLARE_HASH(gm_gsq_pends, struct gm_gsq_pending, itm, gm_gsq_pending_cmp, | |
192 | gm_gsq_pending_hash); | |
193 | ||
194 | /* | |
195 | * interface -> (S,G) | |
196 | */ | |
197 | ||
198 | static int gm_sg_cmp(const struct gm_sg *a, const struct gm_sg *b) | |
199 | { | |
200 | return pim_sgaddr_cmp(a->sgaddr, b->sgaddr); | |
201 | } | |
202 | ||
203 | DECLARE_RBTREE_UNIQ(gm_sgs, struct gm_sg, itm, gm_sg_cmp); | |
204 | ||
205 | static struct gm_sg *gm_sg_find(struct gm_if *gm_ifp, pim_addr grp, | |
206 | pim_addr src) | |
207 | { | |
208 | struct gm_sg ref = {}; | |
209 | ||
210 | ref.sgaddr.grp = grp; | |
211 | ref.sgaddr.src = src; | |
212 | return gm_sgs_find(gm_ifp->sgs, &ref); | |
213 | } | |
214 | ||
215 | static struct gm_sg *gm_sg_make(struct gm_if *gm_ifp, pim_addr grp, | |
216 | pim_addr src) | |
217 | { | |
218 | struct gm_sg *ret, *prev; | |
219 | ||
220 | ret = XCALLOC(MTYPE_GM_SG, sizeof(*ret)); | |
221 | ret->sgaddr.grp = grp; | |
222 | ret->sgaddr.src = src; | |
223 | ret->iface = gm_ifp; | |
224 | prev = gm_sgs_add(gm_ifp->sgs, ret); | |
225 | ||
226 | if (prev) { | |
227 | XFREE(MTYPE_GM_SG, ret); | |
228 | ret = prev; | |
229 | } else { | |
aa2f9349 | 230 | monotime(&ret->created); |
5e5034b0 DL |
231 | gm_packet_sg_subs_init(ret->subs_positive); |
232 | gm_packet_sg_subs_init(ret->subs_negative); | |
233 | } | |
234 | return ret; | |
235 | } | |
236 | ||
237 | /* | |
238 | * interface -> packets, sorted by expiry (because add_tail insert order) | |
239 | */ | |
240 | ||
241 | DECLARE_DLIST(gm_packet_expires, struct gm_packet_state, exp_itm); | |
242 | ||
243 | /* | |
244 | * subscriber -> packets | |
245 | */ | |
246 | ||
247 | DECLARE_DLIST(gm_packets, struct gm_packet_state, pkt_itm); | |
248 | ||
249 | /* | |
250 | * interface -> subscriber | |
251 | */ | |
252 | ||
253 | static int gm_subscriber_cmp(const struct gm_subscriber *a, | |
254 | const struct gm_subscriber *b) | |
255 | { | |
256 | return IPV6_ADDR_CMP(&a->addr, &b->addr); | |
257 | } | |
258 | ||
259 | static uint32_t gm_subscriber_hash(const struct gm_subscriber *a) | |
260 | { | |
261 | return jhash(&a->addr, sizeof(a->addr), 0xd0e94ad4); | |
262 | } | |
263 | ||
264 | DECLARE_HASH(gm_subscribers, struct gm_subscriber, itm, gm_subscriber_cmp, | |
265 | gm_subscriber_hash); | |
266 | ||
267 | static struct gm_subscriber *gm_subscriber_findref(struct gm_if *gm_ifp, | |
268 | pim_addr addr) | |
269 | { | |
270 | struct gm_subscriber ref = {}, *ret; | |
271 | ||
272 | ref.addr = addr; | |
273 | ret = gm_subscribers_find(gm_ifp->subscribers, &ref); | |
274 | if (ret) | |
275 | ret->refcount++; | |
276 | return ret; | |
277 | } | |
278 | ||
279 | static struct gm_subscriber *gm_subscriber_get(struct gm_if *gm_ifp, | |
280 | pim_addr addr) | |
281 | { | |
282 | struct gm_subscriber ref = {}, *ret; | |
283 | ||
284 | ref.addr = addr; | |
285 | ret = gm_subscribers_find(gm_ifp->subscribers, &ref); | |
286 | ||
287 | if (!ret) { | |
288 | ret = XCALLOC(MTYPE_GM_SUBSCRIBER, sizeof(*ret)); | |
289 | ret->iface = gm_ifp; | |
290 | ret->addr = addr; | |
291 | ret->refcount = 1; | |
aa2f9349 | 292 | monotime(&ret->created); |
5e5034b0 DL |
293 | gm_packets_init(ret->packets); |
294 | ||
295 | gm_subscribers_add(gm_ifp->subscribers, ret); | |
296 | } | |
297 | return ret; | |
298 | } | |
299 | ||
300 | static void gm_subscriber_drop(struct gm_subscriber **subp) | |
301 | { | |
302 | struct gm_subscriber *sub = *subp; | |
303 | struct gm_if *gm_ifp; | |
304 | ||
305 | if (!sub) | |
306 | return; | |
307 | gm_ifp = sub->iface; | |
308 | ||
309 | *subp = NULL; | |
310 | sub->refcount--; | |
311 | ||
312 | if (sub->refcount) | |
313 | return; | |
314 | ||
315 | gm_subscribers_del(gm_ifp->subscribers, sub); | |
316 | XFREE(MTYPE_GM_SUBSCRIBER, sub); | |
317 | } | |
318 | ||
319 | /****************************************************************************/ | |
320 | ||
321 | /* bundle query timer values for combined v1/v2 handling */ | |
322 | struct gm_query_timers { | |
323 | unsigned int qrv; | |
324 | unsigned int max_resp_ms; | |
325 | unsigned int qqic_ms; | |
326 | ||
327 | struct timeval fuzz; | |
328 | struct timeval expire_wait; | |
329 | }; | |
330 | ||
331 | static void gm_expiry_calc(struct gm_query_timers *timers) | |
332 | { | |
333 | unsigned int expire = | |
334 | (timers->qrv - 1) * timers->qqic_ms + timers->max_resp_ms; | |
335 | ldiv_t exp_div = ldiv(expire, 1000); | |
336 | ||
337 | timers->expire_wait.tv_sec = exp_div.quot; | |
338 | timers->expire_wait.tv_usec = exp_div.rem * 1000; | |
339 | timeradd(&timers->expire_wait, &timers->fuzz, &timers->expire_wait); | |
340 | } | |
341 | ||
342 | static void gm_sg_free(struct gm_sg *sg) | |
343 | { | |
344 | /* t_sg_expiry is handled before this is reached */ | |
345 | THREAD_OFF(sg->t_sg_query); | |
346 | gm_packet_sg_subs_fini(sg->subs_negative); | |
347 | gm_packet_sg_subs_fini(sg->subs_positive); | |
348 | XFREE(MTYPE_GM_SG, sg); | |
349 | } | |
350 | ||
351 | /* clang-format off */ | |
352 | static const char *const gm_states[] = { | |
353 | [GM_SG_NOINFO] = "NOINFO", | |
354 | [GM_SG_JOIN] = "JOIN", | |
355 | [GM_SG_JOIN_EXPIRING] = "JOIN_EXPIRING", | |
356 | [GM_SG_PRUNE] = "PRUNE", | |
357 | [GM_SG_NOPRUNE] = "NOPRUNE", | |
358 | [GM_SG_NOPRUNE_EXPIRING] = "NOPRUNE_EXPIRING", | |
359 | }; | |
360 | /* clang-format on */ | |
361 | ||
362 | CPP_NOTICE("TODO: S,G entries in EXCLUDE (i.e. prune) unsupported"); | |
363 | /* tib_sg_gm_prune() below is an "un-join", it doesn't prune S,G when *,G is | |
364 | * joined. Whether we actually want/need to support this is a separate | |
365 | * question - it is almost never used. In fact this is exactly what RFC5790 | |
366 | * ("lightweight" MLDv2) does: it removes S,G EXCLUDE support. | |
367 | */ | |
368 | ||
369 | static void gm_sg_update(struct gm_sg *sg, bool has_expired) | |
370 | { | |
371 | struct gm_if *gm_ifp = sg->iface; | |
372 | enum gm_sg_state prev, desired; | |
373 | bool new_join; | |
374 | struct gm_sg *grp = NULL; | |
375 | ||
376 | if (!pim_addr_is_any(sg->sgaddr.src)) | |
377 | grp = gm_sg_find(gm_ifp, sg->sgaddr.grp, PIMADDR_ANY); | |
378 | else | |
379 | assert(sg->state != GM_SG_PRUNE); | |
380 | ||
381 | if (gm_packet_sg_subs_count(sg->subs_positive)) { | |
382 | desired = GM_SG_JOIN; | |
383 | assert(!sg->t_sg_expire); | |
384 | } else if ((sg->state == GM_SG_JOIN || | |
385 | sg->state == GM_SG_JOIN_EXPIRING) && | |
386 | !has_expired) | |
387 | desired = GM_SG_JOIN_EXPIRING; | |
388 | else if (!grp || !gm_packet_sg_subs_count(grp->subs_positive)) | |
389 | desired = GM_SG_NOINFO; | |
390 | else if (gm_packet_sg_subs_count(grp->subs_positive) == | |
391 | gm_packet_sg_subs_count(sg->subs_negative)) { | |
392 | if ((sg->state == GM_SG_NOPRUNE || | |
393 | sg->state == GM_SG_NOPRUNE_EXPIRING) && | |
394 | !has_expired) | |
395 | desired = GM_SG_NOPRUNE_EXPIRING; | |
396 | else | |
397 | desired = GM_SG_PRUNE; | |
398 | } else if (gm_packet_sg_subs_count(sg->subs_negative)) | |
399 | desired = GM_SG_NOPRUNE; | |
400 | else | |
401 | desired = GM_SG_NOINFO; | |
402 | ||
403 | if (desired != sg->state && !gm_ifp->stopping) { | |
95b13dc5 | 404 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
405 | zlog_debug(log_sg(sg, "%s => %s"), gm_states[sg->state], |
406 | gm_states[desired]); | |
407 | ||
408 | if (desired == GM_SG_JOIN_EXPIRING || | |
409 | desired == GM_SG_NOPRUNE_EXPIRING) { | |
410 | struct gm_query_timers timers; | |
411 | ||
412 | timers.qrv = gm_ifp->cur_qrv; | |
413 | timers.max_resp_ms = gm_ifp->cur_max_resp; | |
414 | timers.qqic_ms = gm_ifp->cur_query_intv_trig; | |
415 | timers.fuzz = gm_ifp->cfg_timing_fuzz; | |
416 | ||
417 | gm_expiry_calc(&timers); | |
418 | gm_sg_timer_start(gm_ifp, sg, timers.expire_wait); | |
419 | ||
420 | THREAD_OFF(sg->t_sg_query); | |
51b4991f | 421 | sg->n_query = gm_ifp->cur_lmqc; |
5e5034b0 DL |
422 | sg->query_sbit = false; |
423 | gm_trigger_specific(sg); | |
424 | } | |
425 | } | |
426 | prev = sg->state; | |
427 | sg->state = desired; | |
428 | ||
429 | if (in6_multicast_nofwd(&sg->sgaddr.grp) || gm_ifp->stopping) | |
430 | new_join = false; | |
431 | else | |
432 | new_join = gm_sg_state_want_join(desired); | |
433 | ||
434 | if (new_join && !sg->tib_joined) { | |
435 | /* this will retry if join previously failed */ | |
436 | sg->tib_joined = tib_sg_gm_join(gm_ifp->pim, sg->sgaddr, | |
437 | gm_ifp->ifp, &sg->oil); | |
438 | if (!sg->tib_joined) | |
439 | zlog_warn( | |
440 | "MLD join for %pSG%%%s not propagated into TIB", | |
441 | &sg->sgaddr, gm_ifp->ifp->name); | |
442 | else | |
443 | zlog_info(log_ifp("%pSG%%%s TIB joined"), &sg->sgaddr, | |
444 | gm_ifp->ifp->name); | |
445 | ||
446 | } else if (sg->tib_joined && !new_join) { | |
447 | tib_sg_gm_prune(gm_ifp->pim, sg->sgaddr, gm_ifp->ifp, &sg->oil); | |
448 | ||
449 | sg->oil = NULL; | |
450 | sg->tib_joined = false; | |
451 | } | |
452 | ||
453 | if (desired == GM_SG_NOINFO) { | |
454 | assertf((!sg->t_sg_expire && | |
455 | !gm_packet_sg_subs_count(sg->subs_positive) && | |
456 | !gm_packet_sg_subs_count(sg->subs_negative)), | |
457 | "%pSG%%%s hx=%u exp=%pTHD state=%s->%s pos=%zu neg=%zu grp=%p", | |
458 | &sg->sgaddr, gm_ifp->ifp->name, has_expired, | |
459 | sg->t_sg_expire, gm_states[prev], gm_states[desired], | |
460 | gm_packet_sg_subs_count(sg->subs_positive), | |
461 | gm_packet_sg_subs_count(sg->subs_negative), grp); | |
462 | ||
a96d64b0 | 463 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
464 | zlog_debug(log_sg(sg, "dropping")); |
465 | ||
466 | gm_sgs_del(gm_ifp->sgs, sg); | |
467 | gm_sg_free(sg); | |
468 | } | |
469 | } | |
470 | ||
471 | /****************************************************************************/ | |
472 | ||
473 | /* the following bunch of functions deals with transferring state from | |
474 | * received packets into gm_packet_state. As a reminder, the querier is | |
475 | * structured to keep all items received in one packet together, since they | |
476 | * will share expiry timers and thus allows efficient handling. | |
477 | */ | |
478 | ||
479 | static void gm_packet_free(struct gm_packet_state *pkt) | |
480 | { | |
481 | gm_packet_expires_del(pkt->iface->expires, pkt); | |
482 | gm_packets_del(pkt->subscriber->packets, pkt); | |
483 | gm_subscriber_drop(&pkt->subscriber); | |
484 | XFREE(MTYPE_GM_STATE, pkt); | |
485 | } | |
486 | ||
487 | static struct gm_packet_sg *gm_packet_sg_setup(struct gm_packet_state *pkt, | |
488 | struct gm_sg *sg, bool is_excl, | |
489 | bool is_src) | |
490 | { | |
491 | struct gm_packet_sg *item; | |
492 | ||
493 | assert(pkt->n_active < pkt->n_sg); | |
494 | ||
495 | item = &pkt->items[pkt->n_active]; | |
496 | item->sg = sg; | |
497 | item->is_excl = is_excl; | |
498 | item->is_src = is_src; | |
499 | item->offset = pkt->n_active; | |
500 | ||
501 | pkt->n_active++; | |
502 | return item; | |
503 | } | |
504 | ||
505 | static bool gm_packet_sg_drop(struct gm_packet_sg *item) | |
506 | { | |
507 | struct gm_packet_state *pkt; | |
508 | size_t i; | |
509 | ||
510 | assert(item->sg); | |
511 | ||
512 | pkt = gm_packet_sg2state(item); | |
513 | if (item->sg->most_recent == item) | |
514 | item->sg->most_recent = NULL; | |
515 | ||
516 | for (i = 0; i < item->n_exclude; i++) { | |
517 | struct gm_packet_sg *excl_item; | |
518 | ||
519 | excl_item = item + 1 + i; | |
520 | if (!excl_item->sg) | |
521 | continue; | |
522 | ||
523 | gm_packet_sg_subs_del(excl_item->sg->subs_negative, excl_item); | |
524 | excl_item->sg = NULL; | |
525 | pkt->n_active--; | |
526 | ||
527 | assert(pkt->n_active > 0); | |
528 | } | |
529 | ||
530 | if (item->is_excl && item->is_src) | |
531 | gm_packet_sg_subs_del(item->sg->subs_negative, item); | |
532 | else | |
533 | gm_packet_sg_subs_del(item->sg->subs_positive, item); | |
534 | item->sg = NULL; | |
535 | pkt->n_active--; | |
536 | ||
537 | if (!pkt->n_active) { | |
538 | gm_packet_free(pkt); | |
539 | return true; | |
540 | } | |
541 | return false; | |
542 | } | |
543 | ||
544 | static void gm_packet_drop(struct gm_packet_state *pkt, bool trace) | |
545 | { | |
546 | for (size_t i = 0; i < pkt->n_sg; i++) { | |
547 | struct gm_sg *sg = pkt->items[i].sg; | |
548 | bool deleted; | |
549 | ||
550 | if (!sg) | |
551 | continue; | |
552 | ||
a96d64b0 | 553 | if (trace && PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
554 | zlog_debug(log_sg(sg, "general-dropping from %pPA"), |
555 | &pkt->subscriber->addr); | |
556 | deleted = gm_packet_sg_drop(&pkt->items[i]); | |
557 | ||
558 | gm_sg_update(sg, true); | |
559 | if (deleted) | |
560 | break; | |
561 | } | |
562 | } | |
563 | ||
564 | static void gm_packet_sg_remove_sources(struct gm_if *gm_ifp, | |
565 | struct gm_subscriber *subscriber, | |
566 | pim_addr grp, pim_addr *srcs, | |
567 | size_t n_src, enum gm_sub_sense sense) | |
568 | { | |
569 | struct gm_sg *sg; | |
570 | struct gm_packet_sg *old_src; | |
571 | size_t i; | |
572 | ||
573 | for (i = 0; i < n_src; i++) { | |
574 | sg = gm_sg_find(gm_ifp, grp, srcs[i]); | |
575 | if (!sg) | |
576 | continue; | |
577 | ||
578 | old_src = gm_packet_sg_find(sg, sense, subscriber); | |
579 | if (!old_src) | |
580 | continue; | |
581 | ||
582 | gm_packet_sg_drop(old_src); | |
583 | gm_sg_update(sg, false); | |
584 | } | |
585 | } | |
586 | ||
587 | static void gm_sg_expiry_cancel(struct gm_sg *sg) | |
588 | { | |
a96d64b0 | 589 | if (sg->t_sg_expire && PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
590 | zlog_debug(log_sg(sg, "alive, cancelling expiry timer")); |
591 | THREAD_OFF(sg->t_sg_expire); | |
592 | sg->query_sbit = true; | |
593 | } | |
594 | ||
595 | /* first pass: process all changes resulting in removal of state: | |
596 | * - {TO,IS}_INCLUDE removes *,G EXCLUDE state (and S,G) | |
597 | * - ALLOW_NEW_SOURCES, if *,G in EXCLUDE removes S,G state | |
598 | * - BLOCK_OLD_SOURCES, if *,G in INCLUDE removes S,G state | |
599 | * - {TO,IS}_EXCLUDE, if *,G in INCLUDE removes S,G state | |
600 | * note *replacing* state is NOT considered *removing* state here | |
601 | * | |
602 | * everything else is thrown into pkt for creation of state in pass 2 | |
603 | */ | |
604 | static void gm_handle_v2_pass1(struct gm_packet_state *pkt, | |
605 | struct mld_v2_rec_hdr *rechdr) | |
606 | { | |
607 | /* NB: pkt->subscriber can be NULL here if the subscriber was not | |
608 | * previously seen! | |
609 | */ | |
610 | struct gm_subscriber *subscriber = pkt->subscriber; | |
611 | struct gm_sg *grp; | |
612 | struct gm_packet_sg *old_grp = NULL; | |
613 | struct gm_packet_sg *item; | |
614 | size_t n_src = ntohs(rechdr->n_src); | |
615 | size_t j; | |
616 | bool is_excl = false; | |
617 | ||
618 | grp = gm_sg_find(pkt->iface, rechdr->grp, PIMADDR_ANY); | |
619 | if (grp && subscriber) | |
620 | old_grp = gm_packet_sg_find(grp, GM_SUB_POS, subscriber); | |
621 | ||
622 | assert(old_grp == NULL || old_grp->is_excl); | |
623 | ||
624 | switch (rechdr->type) { | |
625 | case MLD_RECTYPE_IS_EXCLUDE: | |
626 | case MLD_RECTYPE_CHANGE_TO_EXCLUDE: | |
627 | /* this always replaces or creates state */ | |
628 | is_excl = true; | |
629 | if (!grp) | |
630 | grp = gm_sg_make(pkt->iface, rechdr->grp, PIMADDR_ANY); | |
631 | ||
632 | item = gm_packet_sg_setup(pkt, grp, is_excl, false); | |
633 | item->n_exclude = n_src; | |
634 | ||
635 | /* [EXCL_INCL_SG_NOTE] referenced below | |
636 | * | |
637 | * in theory, we should drop any S,G that the host may have | |
638 | * previously added in INCLUDE mode. In practice, this is both | |
639 | * incredibly rare and entirely irrelevant. It only makes any | |
640 | * difference if an S,G that the host previously had on the | |
641 | * INCLUDE list is now on the blocked list for EXCLUDE, which | |
642 | * we can cover in processing the S,G list in pass2_excl(). | |
643 | * | |
644 | * Other S,G from the host are simply left to expire | |
645 | * "naturally" through general expiry. | |
646 | */ | |
647 | break; | |
648 | ||
649 | case MLD_RECTYPE_IS_INCLUDE: | |
650 | case MLD_RECTYPE_CHANGE_TO_INCLUDE: | |
651 | if (old_grp) { | |
652 | /* INCLUDE has no *,G state, so old_grp here refers to | |
653 | * previous EXCLUDE => delete it | |
654 | */ | |
655 | gm_packet_sg_drop(old_grp); | |
656 | gm_sg_update(grp, false); | |
657 | CPP_NOTICE("need S,G PRUNE => NO_INFO transition here"); | |
658 | } | |
659 | break; | |
660 | ||
661 | case MLD_RECTYPE_ALLOW_NEW_SOURCES: | |
662 | if (old_grp) { | |
663 | /* remove S,Gs from EXCLUDE, and then we're done */ | |
664 | gm_packet_sg_remove_sources(pkt->iface, subscriber, | |
665 | rechdr->grp, rechdr->srcs, | |
666 | n_src, GM_SUB_NEG); | |
667 | return; | |
668 | } | |
669 | /* in INCLUDE mode => ALLOW_NEW_SOURCES is functionally | |
670 | * idential to IS_INCLUDE (because the list of sources in | |
671 | * IS_INCLUDE is not exhaustive) | |
672 | */ | |
673 | break; | |
674 | ||
675 | case MLD_RECTYPE_BLOCK_OLD_SOURCES: | |
676 | if (old_grp) { | |
677 | /* this is intentionally not implemented because it | |
678 | * would be complicated as hell. we only take the list | |
679 | * of blocked sources from full group state records | |
680 | */ | |
681 | return; | |
682 | } | |
683 | ||
684 | if (subscriber) | |
685 | gm_packet_sg_remove_sources(pkt->iface, subscriber, | |
686 | rechdr->grp, rechdr->srcs, | |
687 | n_src, GM_SUB_POS); | |
688 | return; | |
689 | } | |
690 | ||
691 | for (j = 0; j < n_src; j++) { | |
692 | struct gm_sg *sg; | |
693 | ||
694 | sg = gm_sg_find(pkt->iface, rechdr->grp, rechdr->srcs[j]); | |
695 | if (!sg) | |
696 | sg = gm_sg_make(pkt->iface, rechdr->grp, | |
697 | rechdr->srcs[j]); | |
698 | ||
699 | gm_packet_sg_setup(pkt, sg, is_excl, true); | |
700 | } | |
701 | } | |
702 | ||
703 | /* second pass: creating/updating/refreshing state. All the items from the | |
704 | * received packet have already been thrown into gm_packet_state. | |
705 | */ | |
706 | ||
707 | static void gm_handle_v2_pass2_incl(struct gm_packet_state *pkt, size_t i) | |
708 | { | |
709 | struct gm_packet_sg *item = &pkt->items[i]; | |
710 | struct gm_packet_sg *old = NULL; | |
711 | struct gm_sg *sg = item->sg; | |
712 | ||
713 | /* EXCLUDE state was already dropped in pass1 */ | |
714 | assert(!gm_packet_sg_find(sg, GM_SUB_NEG, pkt->subscriber)); | |
715 | ||
716 | old = gm_packet_sg_find(sg, GM_SUB_POS, pkt->subscriber); | |
717 | if (old) | |
718 | gm_packet_sg_drop(old); | |
719 | ||
720 | pkt->n_active++; | |
721 | gm_packet_sg_subs_add(sg->subs_positive, item); | |
722 | ||
723 | sg->most_recent = item; | |
724 | gm_sg_expiry_cancel(sg); | |
725 | gm_sg_update(sg, false); | |
726 | } | |
727 | ||
728 | static void gm_handle_v2_pass2_excl(struct gm_packet_state *pkt, size_t offs) | |
729 | { | |
730 | struct gm_packet_sg *item = &pkt->items[offs]; | |
731 | struct gm_packet_sg *old_grp, *item_dup; | |
732 | struct gm_sg *sg_grp = item->sg; | |
733 | size_t i; | |
734 | ||
735 | old_grp = gm_packet_sg_find(sg_grp, GM_SUB_POS, pkt->subscriber); | |
736 | if (old_grp) { | |
737 | for (i = 0; i < item->n_exclude; i++) { | |
738 | struct gm_packet_sg *item_src, *old_src; | |
739 | ||
740 | item_src = &pkt->items[offs + 1 + i]; | |
741 | old_src = gm_packet_sg_find(item_src->sg, GM_SUB_NEG, | |
742 | pkt->subscriber); | |
743 | if (old_src) | |
744 | gm_packet_sg_drop(old_src); | |
745 | ||
746 | /* See [EXCL_INCL_SG_NOTE] above - we can have old S,G | |
747 | * items left over if the host previously had INCLUDE | |
748 | * mode going. Remove them here if we find any. | |
749 | */ | |
750 | old_src = gm_packet_sg_find(item_src->sg, GM_SUB_POS, | |
751 | pkt->subscriber); | |
752 | if (old_src) | |
753 | gm_packet_sg_drop(old_src); | |
754 | } | |
755 | ||
756 | /* the previous loop has removed the S,G entries which are | |
757 | * still excluded after this update. So anything left on the | |
758 | * old item was previously excluded but is now included | |
759 | * => need to trigger update on S,G | |
760 | */ | |
761 | for (i = 0; i < old_grp->n_exclude; i++) { | |
762 | struct gm_packet_sg *old_src; | |
763 | struct gm_sg *old_sg_src; | |
764 | ||
765 | old_src = old_grp + 1 + i; | |
766 | old_sg_src = old_src->sg; | |
767 | if (!old_sg_src) | |
768 | continue; | |
769 | ||
770 | gm_packet_sg_drop(old_src); | |
771 | gm_sg_update(old_sg_src, false); | |
772 | } | |
773 | ||
774 | gm_packet_sg_drop(old_grp); | |
775 | } | |
776 | ||
777 | item_dup = gm_packet_sg_subs_add(sg_grp->subs_positive, item); | |
778 | assert(!item_dup); | |
779 | pkt->n_active++; | |
780 | ||
781 | sg_grp->most_recent = item; | |
782 | gm_sg_expiry_cancel(sg_grp); | |
783 | ||
784 | for (i = 0; i < item->n_exclude; i++) { | |
785 | struct gm_packet_sg *item_src; | |
786 | ||
787 | item_src = &pkt->items[offs + 1 + i]; | |
788 | item_dup = gm_packet_sg_subs_add(item_src->sg->subs_negative, | |
789 | item_src); | |
790 | ||
791 | if (item_dup) | |
792 | item_src->sg = NULL; | |
793 | else { | |
794 | pkt->n_active++; | |
795 | gm_sg_update(item_src->sg, false); | |
796 | } | |
797 | } | |
798 | ||
799 | /* TODO: determine best ordering between gm_sg_update(S,G) and (*,G) | |
800 | * to get lower PIM churn/flapping | |
801 | */ | |
802 | gm_sg_update(sg_grp, false); | |
803 | } | |
804 | ||
805 | CPP_NOTICE("TODO: QRV/QQIC are not copied from queries to local state"); | |
806 | /* on receiving a query, we need to update our robustness/query interval to | |
807 | * match, so we correctly process group/source specific queries after last | |
808 | * member leaves | |
809 | */ | |
810 | ||
811 | static void gm_handle_v2_report(struct gm_if *gm_ifp, | |
812 | const struct sockaddr_in6 *pkt_src, char *data, | |
813 | size_t len) | |
814 | { | |
815 | struct mld_v2_report_hdr *hdr; | |
816 | size_t i, n_records, max_entries; | |
817 | struct gm_packet_state *pkt; | |
818 | ||
819 | if (len < sizeof(*hdr)) { | |
55eb347d | 820 | if (PIM_DEBUG_GM_PACKETS) |
5e5034b0 DL |
821 | zlog_debug(log_pkt_src( |
822 | "malformed MLDv2 report (truncated header)")); | |
aa2f9349 | 823 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
824 | return; |
825 | } | |
826 | ||
aa2f9349 DL |
827 | /* errors after this may at least partially process the packet */ |
828 | gm_ifp->stats.rx_new_report++; | |
829 | ||
5e5034b0 DL |
830 | hdr = (struct mld_v2_report_hdr *)data; |
831 | data += sizeof(*hdr); | |
832 | len -= sizeof(*hdr); | |
833 | ||
834 | /* can't have more *,G and S,G items than there is space for ipv6 | |
835 | * addresses, so just use this to allocate temporary buffer | |
836 | */ | |
837 | max_entries = len / sizeof(pim_addr); | |
838 | pkt = XCALLOC(MTYPE_GM_STATE, | |
839 | offsetof(struct gm_packet_state, items[max_entries])); | |
840 | pkt->n_sg = max_entries; | |
841 | pkt->iface = gm_ifp; | |
842 | pkt->subscriber = gm_subscriber_findref(gm_ifp, pkt_src->sin6_addr); | |
843 | ||
844 | n_records = ntohs(hdr->n_records); | |
845 | ||
846 | /* validate & remove state in v2_pass1() */ | |
847 | for (i = 0; i < n_records; i++) { | |
848 | struct mld_v2_rec_hdr *rechdr; | |
849 | size_t n_src, record_size; | |
850 | ||
851 | if (len < sizeof(*rechdr)) { | |
852 | zlog_warn(log_pkt_src( | |
853 | "malformed MLDv2 report (truncated record header)")); | |
aa2f9349 | 854 | gm_ifp->stats.rx_trunc_report++; |
5e5034b0 DL |
855 | break; |
856 | } | |
857 | ||
858 | rechdr = (struct mld_v2_rec_hdr *)data; | |
859 | data += sizeof(*rechdr); | |
860 | len -= sizeof(*rechdr); | |
861 | ||
862 | n_src = ntohs(rechdr->n_src); | |
863 | record_size = n_src * sizeof(pim_addr) + rechdr->aux_len * 4; | |
864 | ||
865 | if (len < record_size) { | |
866 | zlog_warn(log_pkt_src( | |
867 | "malformed MLDv2 report (truncated source list)")); | |
aa2f9349 | 868 | gm_ifp->stats.rx_trunc_report++; |
5e5034b0 DL |
869 | break; |
870 | } | |
871 | if (!IN6_IS_ADDR_MULTICAST(&rechdr->grp)) { | |
872 | zlog_warn( | |
873 | log_pkt_src( | |
874 | "malformed MLDv2 report (invalid group %pI6)"), | |
875 | &rechdr->grp); | |
aa2f9349 | 876 | gm_ifp->stats.rx_trunc_report++; |
5e5034b0 DL |
877 | break; |
878 | } | |
879 | ||
880 | data += record_size; | |
881 | len -= record_size; | |
882 | ||
883 | gm_handle_v2_pass1(pkt, rechdr); | |
884 | } | |
885 | ||
886 | if (!pkt->n_active) { | |
887 | gm_subscriber_drop(&pkt->subscriber); | |
888 | XFREE(MTYPE_GM_STATE, pkt); | |
889 | return; | |
890 | } | |
891 | ||
892 | pkt = XREALLOC(MTYPE_GM_STATE, pkt, | |
893 | offsetof(struct gm_packet_state, items[pkt->n_active])); | |
894 | pkt->n_sg = pkt->n_active; | |
895 | pkt->n_active = 0; | |
896 | ||
897 | monotime(&pkt->received); | |
898 | if (!pkt->subscriber) | |
899 | pkt->subscriber = gm_subscriber_get(gm_ifp, pkt_src->sin6_addr); | |
900 | gm_packets_add_tail(pkt->subscriber->packets, pkt); | |
901 | gm_packet_expires_add_tail(gm_ifp->expires, pkt); | |
902 | ||
903 | for (i = 0; i < pkt->n_sg; i++) | |
904 | if (!pkt->items[i].is_excl) | |
905 | gm_handle_v2_pass2_incl(pkt, i); | |
906 | else { | |
907 | gm_handle_v2_pass2_excl(pkt, i); | |
908 | i += pkt->items[i].n_exclude; | |
909 | } | |
910 | ||
911 | if (pkt->n_active == 0) | |
912 | gm_packet_free(pkt); | |
913 | } | |
914 | ||
915 | static void gm_handle_v1_report(struct gm_if *gm_ifp, | |
916 | const struct sockaddr_in6 *pkt_src, char *data, | |
917 | size_t len) | |
918 | { | |
919 | struct mld_v1_pkt *hdr; | |
920 | struct gm_packet_state *pkt; | |
921 | struct gm_sg *grp; | |
922 | struct gm_packet_sg *item; | |
923 | size_t max_entries; | |
924 | ||
925 | if (len < sizeof(*hdr)) { | |
55eb347d | 926 | if (PIM_DEBUG_GM_PACKETS) |
5e5034b0 DL |
927 | zlog_debug(log_pkt_src( |
928 | "malformed MLDv1 report (truncated)")); | |
aa2f9349 | 929 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
930 | return; |
931 | } | |
932 | ||
aa2f9349 DL |
933 | gm_ifp->stats.rx_old_report++; |
934 | ||
5e5034b0 DL |
935 | hdr = (struct mld_v1_pkt *)data; |
936 | ||
937 | max_entries = 1; | |
938 | pkt = XCALLOC(MTYPE_GM_STATE, | |
939 | offsetof(struct gm_packet_state, items[max_entries])); | |
940 | pkt->n_sg = max_entries; | |
941 | pkt->iface = gm_ifp; | |
942 | pkt->subscriber = gm_subscriber_findref(gm_ifp, gm_dummy_untracked); | |
943 | ||
944 | /* { equivalent of gm_handle_v2_pass1() with IS_EXCLUDE */ | |
945 | ||
946 | grp = gm_sg_find(pkt->iface, hdr->grp, PIMADDR_ANY); | |
947 | if (!grp) | |
948 | grp = gm_sg_make(pkt->iface, hdr->grp, PIMADDR_ANY); | |
949 | ||
950 | item = gm_packet_sg_setup(pkt, grp, true, false); | |
951 | item->n_exclude = 0; | |
952 | CPP_NOTICE("set v1-seen timer on grp here"); | |
953 | ||
954 | /* } */ | |
955 | ||
956 | /* pass2 will count n_active back up to 1. Also since a v1 report | |
957 | * has exactly 1 group, we can skip the realloc() that v2 needs here. | |
958 | */ | |
959 | assert(pkt->n_active == 1); | |
960 | pkt->n_sg = pkt->n_active; | |
961 | pkt->n_active = 0; | |
962 | ||
963 | monotime(&pkt->received); | |
964 | if (!pkt->subscriber) | |
965 | pkt->subscriber = gm_subscriber_get(gm_ifp, gm_dummy_untracked); | |
966 | gm_packets_add_tail(pkt->subscriber->packets, pkt); | |
967 | gm_packet_expires_add_tail(gm_ifp->expires, pkt); | |
968 | ||
969 | /* pass2 covers installing state & removing old state; all the v1 | |
970 | * compat is handled at this point. | |
971 | * | |
972 | * Note that "old state" may be v2; subscribers will switch from v2 | |
973 | * reports to v1 reports when the querier changes from v2 to v1. So, | |
974 | * limiting this to v1 would be wrong. | |
975 | */ | |
976 | gm_handle_v2_pass2_excl(pkt, 0); | |
977 | ||
978 | if (pkt->n_active == 0) | |
979 | gm_packet_free(pkt); | |
980 | } | |
981 | ||
982 | static void gm_handle_v1_leave(struct gm_if *gm_ifp, | |
983 | const struct sockaddr_in6 *pkt_src, char *data, | |
984 | size_t len) | |
985 | { | |
986 | struct mld_v1_pkt *hdr; | |
987 | struct gm_subscriber *subscriber; | |
988 | struct gm_sg *grp; | |
989 | struct gm_packet_sg *old_grp; | |
990 | ||
991 | if (len < sizeof(*hdr)) { | |
55eb347d | 992 | if (PIM_DEBUG_GM_PACKETS) |
5e5034b0 DL |
993 | zlog_debug(log_pkt_src( |
994 | "malformed MLDv1 leave (truncated)")); | |
aa2f9349 | 995 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
996 | return; |
997 | } | |
998 | ||
aa2f9349 DL |
999 | gm_ifp->stats.rx_old_leave++; |
1000 | ||
5e5034b0 DL |
1001 | hdr = (struct mld_v1_pkt *)data; |
1002 | ||
1003 | subscriber = gm_subscriber_findref(gm_ifp, gm_dummy_untracked); | |
1004 | if (!subscriber) | |
1005 | return; | |
1006 | ||
1007 | /* { equivalent of gm_handle_v2_pass1() with IS_INCLUDE */ | |
1008 | ||
1009 | grp = gm_sg_find(gm_ifp, hdr->grp, PIMADDR_ANY); | |
1010 | if (grp) { | |
1011 | old_grp = gm_packet_sg_find(grp, GM_SUB_POS, subscriber); | |
1012 | if (old_grp) { | |
1013 | gm_packet_sg_drop(old_grp); | |
1014 | gm_sg_update(grp, false); | |
1015 | CPP_NOTICE("need S,G PRUNE => NO_INFO transition here"); | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | /* } */ | |
1020 | ||
1021 | /* nothing more to do here, pass2 is no-op for leaves */ | |
1022 | gm_subscriber_drop(&subscriber); | |
1023 | } | |
1024 | ||
1025 | /* for each general query received (or sent), a timer is started to expire | |
1026 | * _everything_ at the appropriate time (including robustness multiplier). | |
1027 | * | |
1028 | * So when this timer hits, all packets - with all of their items - that were | |
1029 | * received *before* the query are aged out, and state updated accordingly. | |
1030 | * Note that when we receive a refresh/update, the previous/old packet is | |
1031 | * already dropped and replaced with a new one, so in normal steady-state | |
1032 | * operation, this timer won't be doing anything. | |
1033 | * | |
1034 | * Additionally, if a subscriber actively leaves a group, that goes through | |
1035 | * its own path too and won't hit this. This is really only triggered when a | |
1036 | * host straight up disappears. | |
1037 | */ | |
1038 | static void gm_t_expire(struct thread *t) | |
1039 | { | |
1040 | struct gm_if *gm_ifp = THREAD_ARG(t); | |
1041 | struct gm_packet_state *pkt; | |
1042 | ||
1043 | zlog_info(log_ifp("general expiry timer")); | |
1044 | ||
1045 | while (gm_ifp->n_pending) { | |
1046 | struct gm_general_pending *pend = gm_ifp->pending; | |
1047 | struct timeval remain; | |
1048 | int64_t remain_ms; | |
1049 | ||
1050 | remain_ms = monotime_until(&pend->expiry, &remain); | |
1051 | if (remain_ms > 0) { | |
95b13dc5 | 1052 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
1053 | zlog_debug( |
1054 | log_ifp("next general expiry in %" PRId64 "ms"), | |
1055 | remain_ms / 1000); | |
1056 | ||
1057 | thread_add_timer_tv(router->master, gm_t_expire, gm_ifp, | |
1058 | &remain, &gm_ifp->t_expire); | |
1059 | return; | |
1060 | } | |
1061 | ||
1062 | while ((pkt = gm_packet_expires_first(gm_ifp->expires))) { | |
1063 | if (timercmp(&pkt->received, &pend->query, >=)) | |
1064 | break; | |
1065 | ||
55eb347d | 1066 | if (PIM_DEBUG_GM_PACKETS) |
5e5034b0 DL |
1067 | zlog_debug(log_ifp("expire packet %p"), pkt); |
1068 | gm_packet_drop(pkt, true); | |
1069 | } | |
1070 | ||
1071 | gm_ifp->n_pending--; | |
1072 | memmove(gm_ifp->pending, gm_ifp->pending + 1, | |
1073 | gm_ifp->n_pending * sizeof(gm_ifp->pending[0])); | |
1074 | } | |
1075 | ||
95b13dc5 | 1076 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
1077 | zlog_debug(log_ifp("next general expiry waiting for query")); |
1078 | } | |
1079 | ||
1080 | /* NB: the receive handlers will also run when sending packets, since we | |
1081 | * receive our own packets back in. | |
1082 | */ | |
1083 | static void gm_handle_q_general(struct gm_if *gm_ifp, | |
1084 | struct gm_query_timers *timers) | |
1085 | { | |
1086 | struct timeval now, expiry; | |
1087 | struct gm_general_pending *pend; | |
1088 | ||
1089 | monotime(&now); | |
1090 | timeradd(&now, &timers->expire_wait, &expiry); | |
1091 | ||
1092 | while (gm_ifp->n_pending) { | |
1093 | pend = &gm_ifp->pending[gm_ifp->n_pending - 1]; | |
1094 | ||
1095 | if (timercmp(&pend->expiry, &expiry, <)) | |
1096 | break; | |
1097 | ||
1098 | /* if we end up here, the last item in pending[] has an expiry | |
1099 | * later than the expiry for this query. But our query time | |
1100 | * (now) is later than that of the item (because, well, that's | |
1101 | * how time works.) This makes this query meaningless since | |
1102 | * it's "supersetted" within the preexisting query | |
1103 | */ | |
1104 | ||
a96d64b0 | 1105 | if (PIM_DEBUG_GM_TRACE_DETAIL) |
5e5034b0 DL |
1106 | zlog_debug( |
1107 | log_ifp("zapping supersetted general timer %pTVMu"), | |
1108 | &pend->expiry); | |
1109 | ||
1110 | gm_ifp->n_pending--; | |
1111 | if (!gm_ifp->n_pending) | |
1112 | THREAD_OFF(gm_ifp->t_expire); | |
1113 | } | |
1114 | ||
1115 | /* people might be messing with their configs or something */ | |
1116 | if (gm_ifp->n_pending == array_size(gm_ifp->pending)) | |
1117 | return; | |
1118 | ||
1119 | pend = &gm_ifp->pending[gm_ifp->n_pending]; | |
1120 | pend->query = now; | |
1121 | pend->expiry = expiry; | |
1122 | ||
1123 | if (!gm_ifp->n_pending++) { | |
a96d64b0 | 1124 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1125 | zlog_debug( |
1126 | log_ifp("starting general timer @ 0: %pTVMu"), | |
1127 | &pend->expiry); | |
1128 | thread_add_timer_tv(router->master, gm_t_expire, gm_ifp, | |
1129 | &timers->expire_wait, &gm_ifp->t_expire); | |
a96d64b0 | 1130 | } else if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1131 | zlog_debug(log_ifp("appending general timer @ %u: %pTVMu"), |
1132 | gm_ifp->n_pending, &pend->expiry); | |
1133 | } | |
1134 | ||
1135 | static void gm_t_sg_expire(struct thread *t) | |
1136 | { | |
1137 | struct gm_sg *sg = THREAD_ARG(t); | |
1138 | struct gm_if *gm_ifp = sg->iface; | |
1139 | struct gm_packet_sg *item; | |
1140 | ||
1141 | assertf(sg->state == GM_SG_JOIN_EXPIRING || | |
1142 | sg->state == GM_SG_NOPRUNE_EXPIRING, | |
1143 | "%pSG%%%s %pTHD", &sg->sgaddr, gm_ifp->ifp->name, t); | |
1144 | ||
1145 | frr_each_safe (gm_packet_sg_subs, sg->subs_positive, item) | |
1146 | /* this will also drop EXCLUDE mode S,G lists together with | |
1147 | * the *,G entry | |
1148 | */ | |
1149 | gm_packet_sg_drop(item); | |
1150 | ||
1151 | /* subs_negative items are only timed out together with the *,G entry | |
1152 | * since we won't get any reports for a group-and-source query | |
1153 | */ | |
1154 | gm_sg_update(sg, true); | |
1155 | } | |
1156 | ||
1157 | static bool gm_sg_check_recent(struct gm_if *gm_ifp, struct gm_sg *sg, | |
1158 | struct timeval ref) | |
1159 | { | |
1160 | struct gm_packet_state *pkt; | |
1161 | ||
1162 | if (!sg->most_recent) { | |
1163 | struct gm_packet_state *best_pkt = NULL; | |
1164 | struct gm_packet_sg *item; | |
1165 | ||
1166 | frr_each (gm_packet_sg_subs, sg->subs_positive, item) { | |
1167 | pkt = gm_packet_sg2state(item); | |
1168 | ||
1169 | if (!best_pkt || | |
1170 | timercmp(&pkt->received, &best_pkt->received, >)) { | |
1171 | best_pkt = pkt; | |
1172 | sg->most_recent = item; | |
1173 | } | |
1174 | } | |
1175 | } | |
1176 | if (sg->most_recent) { | |
1177 | struct timeval fuzz; | |
1178 | ||
1179 | pkt = gm_packet_sg2state(sg->most_recent); | |
1180 | ||
1181 | /* this shouldn't happen on plain old real ethernet segment, | |
1182 | * but on something like a VXLAN or VPLS it is very possible | |
1183 | * that we get a report before the query that triggered it. | |
1184 | * (imagine a triangle scenario with 3 datacenters, it's very | |
1185 | * possible A->B + B->C is faster than A->C due to odd routing) | |
1186 | * | |
1187 | * This makes a little tolerance allowance to handle that case. | |
1188 | */ | |
1189 | timeradd(&pkt->received, &gm_ifp->cfg_timing_fuzz, &fuzz); | |
1190 | ||
1191 | if (timercmp(&fuzz, &ref, >)) | |
1192 | return true; | |
1193 | } | |
1194 | return false; | |
1195 | } | |
1196 | ||
1197 | static void gm_sg_timer_start(struct gm_if *gm_ifp, struct gm_sg *sg, | |
1198 | struct timeval expire_wait) | |
1199 | { | |
1200 | struct timeval now; | |
1201 | ||
1202 | if (!sg) | |
1203 | return; | |
1204 | if (sg->state == GM_SG_PRUNE) | |
1205 | return; | |
1206 | ||
1207 | monotime(&now); | |
1208 | if (gm_sg_check_recent(gm_ifp, sg, now)) | |
1209 | return; | |
1210 | ||
a96d64b0 | 1211 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1212 | zlog_debug(log_sg(sg, "expiring in %pTVI"), &expire_wait); |
1213 | ||
1214 | if (sg->t_sg_expire) { | |
1215 | struct timeval remain; | |
1216 | ||
1217 | remain = thread_timer_remain(sg->t_sg_expire); | |
1218 | if (timercmp(&remain, &expire_wait, <=)) | |
1219 | return; | |
1220 | ||
1221 | THREAD_OFF(sg->t_sg_expire); | |
1222 | } | |
1223 | ||
1224 | thread_add_timer_tv(router->master, gm_t_sg_expire, sg, &expire_wait, | |
1225 | &sg->t_sg_expire); | |
1226 | } | |
1227 | ||
1228 | static void gm_handle_q_groupsrc(struct gm_if *gm_ifp, | |
1229 | struct gm_query_timers *timers, pim_addr grp, | |
1230 | const pim_addr *srcs, size_t n_src) | |
1231 | { | |
1232 | struct gm_sg *sg; | |
1233 | size_t i; | |
1234 | ||
1235 | for (i = 0; i < n_src; i++) { | |
1236 | sg = gm_sg_find(gm_ifp, grp, srcs[i]); | |
1237 | gm_sg_timer_start(gm_ifp, sg, timers->expire_wait); | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | static void gm_t_grp_expire(struct thread *t) | |
1242 | { | |
1243 | /* if we're here, that means when we received the group-specific query | |
1244 | * there was one or more active S,G for this group. For *,G the timer | |
1245 | * in sg->t_sg_expire is running separately and gets cancelled when we | |
1246 | * receive a report, so that work is left to gm_t_sg_expire and we | |
1247 | * shouldn't worry about it here. | |
1248 | */ | |
1249 | struct gm_grp_pending *pend = THREAD_ARG(t); | |
1250 | struct gm_if *gm_ifp = pend->iface; | |
1251 | struct gm_sg *sg, *sg_start, sg_ref = {}; | |
1252 | ||
95b13dc5 | 1253 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
1254 | zlog_debug(log_ifp("*,%pPAs S,G timer expired"), &pend->grp); |
1255 | ||
1256 | /* gteq lookup - try to find *,G or S,G (S,G is > *,G) | |
1257 | * could technically be gt to skip a possible *,G | |
1258 | */ | |
1259 | sg_ref.sgaddr.grp = pend->grp; | |
1260 | sg_ref.sgaddr.src = PIMADDR_ANY; | |
1261 | sg_start = gm_sgs_find_gteq(gm_ifp->sgs, &sg_ref); | |
1262 | ||
1263 | frr_each_from (gm_sgs, gm_ifp->sgs, sg, sg_start) { | |
1264 | struct gm_packet_sg *item; | |
1265 | ||
1266 | if (pim_addr_cmp(sg->sgaddr.grp, pend->grp)) | |
1267 | break; | |
1268 | if (pim_addr_is_any(sg->sgaddr.src)) | |
1269 | /* handled by gm_t_sg_expire / sg->t_sg_expire */ | |
1270 | continue; | |
1271 | if (gm_sg_check_recent(gm_ifp, sg, pend->query)) | |
1272 | continue; | |
1273 | ||
1274 | /* we may also have a group-source-specific query going on in | |
1275 | * parallel. But if we received nothing for the *,G query, | |
1276 | * the S,G query is kinda irrelevant. | |
1277 | */ | |
1278 | THREAD_OFF(sg->t_sg_expire); | |
1279 | ||
1280 | frr_each_safe (gm_packet_sg_subs, sg->subs_positive, item) | |
1281 | /* this will also drop the EXCLUDE S,G lists */ | |
1282 | gm_packet_sg_drop(item); | |
1283 | ||
1284 | gm_sg_update(sg, true); | |
1285 | } | |
1286 | ||
1287 | gm_grp_pends_del(gm_ifp->grp_pends, pend); | |
1288 | XFREE(MTYPE_GM_GRP_PENDING, pend); | |
1289 | } | |
1290 | ||
1291 | static void gm_handle_q_group(struct gm_if *gm_ifp, | |
1292 | struct gm_query_timers *timers, pim_addr grp) | |
1293 | { | |
1294 | struct gm_sg *sg, sg_ref = {}; | |
1295 | struct gm_grp_pending *pend, pend_ref = {}; | |
1296 | ||
1297 | sg_ref.sgaddr.grp = grp; | |
1298 | sg_ref.sgaddr.src = PIMADDR_ANY; | |
1299 | /* gteq lookup - try to find *,G or S,G (S,G is > *,G) */ | |
1300 | sg = gm_sgs_find_gteq(gm_ifp->sgs, &sg_ref); | |
1301 | ||
1302 | if (!sg || pim_addr_cmp(sg->sgaddr.grp, grp)) | |
1303 | /* we have nothing at all for this group - don't waste RAM */ | |
1304 | return; | |
1305 | ||
1306 | if (pim_addr_is_any(sg->sgaddr.src)) { | |
1307 | /* actually found *,G entry here */ | |
a96d64b0 | 1308 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1309 | zlog_debug(log_ifp("*,%pPAs expiry timer starting"), |
1310 | &grp); | |
1311 | gm_sg_timer_start(gm_ifp, sg, timers->expire_wait); | |
1312 | ||
1313 | sg = gm_sgs_next(gm_ifp->sgs, sg); | |
1314 | if (!sg || pim_addr_cmp(sg->sgaddr.grp, grp)) | |
1315 | /* no S,G for this group */ | |
1316 | return; | |
1317 | } | |
1318 | ||
1319 | pend_ref.grp = grp; | |
1320 | pend = gm_grp_pends_find(gm_ifp->grp_pends, &pend_ref); | |
1321 | ||
1322 | if (pend) { | |
1323 | struct timeval remain; | |
1324 | ||
1325 | remain = thread_timer_remain(pend->t_expire); | |
1326 | if (timercmp(&remain, &timers->expire_wait, <=)) | |
1327 | return; | |
1328 | ||
1329 | THREAD_OFF(pend->t_expire); | |
1330 | } else { | |
1331 | pend = XCALLOC(MTYPE_GM_GRP_PENDING, sizeof(*pend)); | |
1332 | pend->grp = grp; | |
1333 | pend->iface = gm_ifp; | |
1334 | gm_grp_pends_add(gm_ifp->grp_pends, pend); | |
1335 | } | |
1336 | ||
1337 | monotime(&pend->query); | |
1338 | thread_add_timer_tv(router->master, gm_t_grp_expire, pend, | |
1339 | &timers->expire_wait, &pend->t_expire); | |
1340 | ||
a96d64b0 | 1341 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1342 | zlog_debug(log_ifp("*,%pPAs S,G timer started: %pTHD"), &grp, |
1343 | pend->t_expire); | |
1344 | } | |
1345 | ||
1346 | static void gm_bump_querier(struct gm_if *gm_ifp) | |
1347 | { | |
1348 | struct pim_interface *pim_ifp = gm_ifp->ifp->info; | |
1349 | ||
1350 | THREAD_OFF(gm_ifp->t_query); | |
1351 | ||
1352 | if (pim_addr_is_any(pim_ifp->ll_lowest)) | |
1353 | return; | |
1354 | if (!IPV6_ADDR_SAME(&gm_ifp->querier, &pim_ifp->ll_lowest)) | |
1355 | return; | |
1356 | ||
1357 | gm_ifp->n_startup = gm_ifp->cur_qrv; | |
1358 | ||
1359 | thread_execute(router->master, gm_t_query, gm_ifp, 0); | |
1360 | } | |
1361 | ||
1362 | static void gm_t_other_querier(struct thread *t) | |
1363 | { | |
1364 | struct gm_if *gm_ifp = THREAD_ARG(t); | |
1365 | struct pim_interface *pim_ifp = gm_ifp->ifp->info; | |
1366 | ||
1367 | zlog_info(log_ifp("other querier timer expired")); | |
1368 | ||
1369 | gm_ifp->querier = pim_ifp->ll_lowest; | |
1370 | gm_ifp->n_startup = gm_ifp->cur_qrv; | |
1371 | ||
1372 | thread_execute(router->master, gm_t_query, gm_ifp, 0); | |
1373 | } | |
1374 | ||
1375 | static void gm_handle_query(struct gm_if *gm_ifp, | |
1376 | const struct sockaddr_in6 *pkt_src, | |
1377 | pim_addr *pkt_dst, char *data, size_t len) | |
1378 | { | |
1379 | struct mld_v2_query_hdr *hdr; | |
1380 | struct pim_interface *pim_ifp = gm_ifp->ifp->info; | |
1381 | struct gm_query_timers timers; | |
1382 | bool general_query; | |
1383 | ||
1384 | if (len < sizeof(struct mld_v2_query_hdr) && | |
1385 | len != sizeof(struct mld_v1_pkt)) { | |
1386 | zlog_warn(log_pkt_src("invalid query size")); | |
aa2f9349 | 1387 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
1388 | return; |
1389 | } | |
1390 | ||
1391 | hdr = (struct mld_v2_query_hdr *)data; | |
1392 | general_query = pim_addr_is_any(hdr->grp); | |
1393 | ||
1394 | if (!general_query && !IN6_IS_ADDR_MULTICAST(&hdr->grp)) { | |
1395 | zlog_warn(log_pkt_src( | |
1396 | "malformed MLDv2 query (invalid group %pI6)"), | |
1397 | &hdr->grp); | |
aa2f9349 | 1398 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
1399 | return; |
1400 | } | |
1401 | ||
1402 | if (len >= sizeof(struct mld_v2_query_hdr)) { | |
1403 | size_t src_space = ntohs(hdr->n_src) * sizeof(pim_addr); | |
1404 | ||
1405 | if (len < sizeof(struct mld_v2_query_hdr) + src_space) { | |
1406 | zlog_warn(log_pkt_src( | |
1407 | "malformed MLDv2 query (truncated source list)")); | |
aa2f9349 | 1408 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
1409 | return; |
1410 | } | |
1411 | ||
1412 | if (general_query && src_space) { | |
1413 | zlog_warn(log_pkt_src( | |
1414 | "malformed MLDv2 query (general query with non-empty source list)")); | |
aa2f9349 | 1415 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
1416 | return; |
1417 | } | |
1418 | } | |
1419 | ||
1420 | /* accepting queries unicast to us (or addressed to a wrong group) | |
1421 | * can mess up querier election as well as cause us to terminate | |
1422 | * traffic (since after a unicast query no reports will be coming in) | |
1423 | */ | |
1424 | if (!IPV6_ADDR_SAME(pkt_dst, &gm_all_hosts)) { | |
1425 | if (pim_addr_is_any(hdr->grp)) { | |
1426 | zlog_warn( | |
1427 | log_pkt_src( | |
1428 | "wrong destination %pPA for general query"), | |
1429 | pkt_dst); | |
aa2f9349 | 1430 | gm_ifp->stats.rx_drop_dstaddr++; |
5e5034b0 DL |
1431 | return; |
1432 | } | |
1433 | ||
1434 | if (!IPV6_ADDR_SAME(&hdr->grp, pkt_dst)) { | |
aa2f9349 | 1435 | gm_ifp->stats.rx_drop_dstaddr++; |
5e5034b0 DL |
1436 | zlog_warn( |
1437 | log_pkt_src( | |
1438 | "wrong destination %pPA for group specific query"), | |
1439 | pkt_dst); | |
1440 | return; | |
1441 | } | |
1442 | } | |
1443 | ||
1444 | if (IPV6_ADDR_CMP(&pkt_src->sin6_addr, &gm_ifp->querier) < 0) { | |
95b13dc5 | 1445 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
1446 | zlog_debug( |
1447 | log_pkt_src("replacing elected querier %pPA"), | |
1448 | &gm_ifp->querier); | |
1449 | ||
1450 | gm_ifp->querier = pkt_src->sin6_addr; | |
1451 | } | |
1452 | ||
1453 | if (len == sizeof(struct mld_v1_pkt)) { | |
1454 | timers.qrv = gm_ifp->cur_qrv; | |
1455 | timers.max_resp_ms = hdr->max_resp_code; | |
1456 | timers.qqic_ms = gm_ifp->cur_query_intv; | |
1457 | } else { | |
1458 | timers.qrv = (hdr->flags & 0x7) ?: 8; | |
1459 | timers.max_resp_ms = mld_max_resp_decode(hdr->max_resp_code); | |
1460 | timers.qqic_ms = igmp_msg_decode8to16(hdr->qqic) * 1000; | |
1461 | } | |
1462 | timers.fuzz = gm_ifp->cfg_timing_fuzz; | |
1463 | ||
1464 | gm_expiry_calc(&timers); | |
1465 | ||
a96d64b0 | 1466 | if (PIM_DEBUG_GM_TRACE_DETAIL) |
5e5034b0 DL |
1467 | zlog_debug( |
1468 | log_ifp("query timers: QRV=%u max_resp=%ums qqic=%ums expire_wait=%pTVI"), | |
1469 | timers.qrv, timers.max_resp_ms, timers.qqic_ms, | |
1470 | &timers.expire_wait); | |
1471 | ||
1472 | if (IPV6_ADDR_CMP(&pkt_src->sin6_addr, &pim_ifp->ll_lowest) < 0) { | |
1473 | unsigned int other_ms; | |
1474 | ||
1475 | THREAD_OFF(gm_ifp->t_query); | |
1476 | THREAD_OFF(gm_ifp->t_other_querier); | |
1477 | ||
1478 | other_ms = timers.qrv * timers.qqic_ms + timers.max_resp_ms / 2; | |
1479 | thread_add_timer_msec(router->master, gm_t_other_querier, | |
1480 | gm_ifp, other_ms, | |
1481 | &gm_ifp->t_other_querier); | |
1482 | } | |
1483 | ||
1484 | if (len == sizeof(struct mld_v1_pkt)) { | |
aa2f9349 | 1485 | if (general_query) { |
5e5034b0 | 1486 | gm_handle_q_general(gm_ifp, &timers); |
aa2f9349 DL |
1487 | gm_ifp->stats.rx_query_old_general++; |
1488 | } else { | |
5e5034b0 | 1489 | gm_handle_q_group(gm_ifp, &timers, hdr->grp); |
aa2f9349 DL |
1490 | gm_ifp->stats.rx_query_old_group++; |
1491 | } | |
5e5034b0 DL |
1492 | return; |
1493 | } | |
1494 | ||
1495 | /* v2 query - [S]uppress bit */ | |
aa2f9349 DL |
1496 | if (hdr->flags & 0x8) { |
1497 | gm_ifp->stats.rx_query_new_sbit++; | |
5e5034b0 | 1498 | return; |
aa2f9349 | 1499 | } |
5e5034b0 | 1500 | |
aa2f9349 | 1501 | if (general_query) { |
5e5034b0 | 1502 | gm_handle_q_general(gm_ifp, &timers); |
aa2f9349 DL |
1503 | gm_ifp->stats.rx_query_new_general++; |
1504 | } else if (!ntohs(hdr->n_src)) { | |
5e5034b0 | 1505 | gm_handle_q_group(gm_ifp, &timers, hdr->grp); |
aa2f9349 DL |
1506 | gm_ifp->stats.rx_query_new_group++; |
1507 | } else { | |
5e5034b0 DL |
1508 | gm_handle_q_groupsrc(gm_ifp, &timers, hdr->grp, hdr->srcs, |
1509 | ntohs(hdr->n_src)); | |
aa2f9349 DL |
1510 | gm_ifp->stats.rx_query_new_groupsrc++; |
1511 | } | |
5e5034b0 DL |
1512 | } |
1513 | ||
1514 | static void gm_rx_process(struct gm_if *gm_ifp, | |
1515 | const struct sockaddr_in6 *pkt_src, pim_addr *pkt_dst, | |
1516 | void *data, size_t pktlen) | |
1517 | { | |
1518 | struct icmp6_plain_hdr *icmp6 = data; | |
1519 | uint16_t pkt_csum, ref_csum; | |
1520 | struct ipv6_ph ph6 = { | |
1521 | .src = pkt_src->sin6_addr, | |
1522 | .dst = *pkt_dst, | |
1523 | .ulpl = htons(pktlen), | |
1524 | .next_hdr = IPPROTO_ICMPV6, | |
1525 | }; | |
1526 | ||
1527 | pkt_csum = icmp6->icmp6_cksum; | |
1528 | icmp6->icmp6_cksum = 0; | |
1529 | ref_csum = in_cksum_with_ph6(&ph6, data, pktlen); | |
1530 | ||
1531 | if (pkt_csum != ref_csum) { | |
1532 | zlog_warn( | |
1533 | log_pkt_src( | |
1534 | "(dst %pPA) packet RX checksum failure, expected %04hx, got %04hx"), | |
1535 | pkt_dst, pkt_csum, ref_csum); | |
aa2f9349 | 1536 | gm_ifp->stats.rx_drop_csum++; |
5e5034b0 DL |
1537 | return; |
1538 | } | |
1539 | ||
1540 | data = (icmp6 + 1); | |
1541 | pktlen -= sizeof(*icmp6); | |
1542 | ||
1543 | switch (icmp6->icmp6_type) { | |
1544 | case ICMP6_MLD_QUERY: | |
1545 | gm_handle_query(gm_ifp, pkt_src, pkt_dst, data, pktlen); | |
1546 | break; | |
1547 | case ICMP6_MLD_V1_REPORT: | |
1548 | gm_handle_v1_report(gm_ifp, pkt_src, data, pktlen); | |
1549 | break; | |
1550 | case ICMP6_MLD_V1_DONE: | |
1551 | gm_handle_v1_leave(gm_ifp, pkt_src, data, pktlen); | |
1552 | break; | |
1553 | case ICMP6_MLD_V2_REPORT: | |
1554 | gm_handle_v2_report(gm_ifp, pkt_src, data, pktlen); | |
1555 | break; | |
1556 | } | |
1557 | } | |
1558 | ||
1559 | static bool ip6_check_hopopts_ra(uint8_t *hopopts, size_t hopopt_len, | |
1560 | uint16_t alert_type) | |
1561 | { | |
1562 | uint8_t *hopopt_end; | |
1563 | ||
1564 | if (hopopt_len < 8) | |
1565 | return false; | |
1566 | if (hopopt_len < (hopopts[1] + 1U) * 8U) | |
1567 | return false; | |
1568 | ||
1569 | hopopt_end = hopopts + (hopopts[1] + 1) * 8; | |
1570 | hopopts += 2; | |
1571 | ||
1572 | while (hopopts < hopopt_end) { | |
1573 | if (hopopts[0] == IP6OPT_PAD1) { | |
1574 | hopopts++; | |
1575 | continue; | |
1576 | } | |
1577 | ||
1578 | if (hopopts > hopopt_end - 2) | |
1579 | break; | |
1580 | if (hopopts > hopopt_end - 2 - hopopts[1]) | |
1581 | break; | |
1582 | ||
1583 | if (hopopts[0] == IP6OPT_ROUTER_ALERT && hopopts[1] == 2) { | |
1584 | uint16_t have_type = (hopopts[2] << 8) | hopopts[3]; | |
1585 | ||
1586 | if (have_type == alert_type) | |
1587 | return true; | |
1588 | } | |
1589 | ||
1590 | hopopts += 2 + hopopts[1]; | |
1591 | } | |
1592 | return false; | |
1593 | } | |
1594 | ||
1595 | static void gm_t_recv(struct thread *t) | |
1596 | { | |
df655593 | 1597 | struct pim_instance *pim = THREAD_ARG(t); |
5e5034b0 DL |
1598 | union { |
1599 | char buf[CMSG_SPACE(sizeof(struct in6_pktinfo)) + | |
1600 | CMSG_SPACE(256) /* hop options */ + | |
1601 | CMSG_SPACE(sizeof(int)) /* hopcount */]; | |
1602 | struct cmsghdr align; | |
1603 | } cmsgbuf; | |
1604 | struct cmsghdr *cmsg; | |
1605 | struct in6_pktinfo *pktinfo = NULL; | |
1606 | uint8_t *hopopts = NULL; | |
1607 | size_t hopopt_len = 0; | |
1608 | int *hoplimit = NULL; | |
1609 | char rxbuf[2048]; | |
1610 | struct msghdr mh[1] = {}; | |
1611 | struct iovec iov[1]; | |
5784a878 | 1612 | struct sockaddr_in6 pkt_src[1] = {}; |
5e5034b0 DL |
1613 | ssize_t nread; |
1614 | size_t pktlen; | |
1615 | ||
df655593 DL |
1616 | thread_add_read(router->master, gm_t_recv, pim, pim->gm_socket, |
1617 | &pim->t_gm_recv); | |
5e5034b0 DL |
1618 | |
1619 | iov->iov_base = rxbuf; | |
1620 | iov->iov_len = sizeof(rxbuf); | |
1621 | ||
1622 | mh->msg_name = pkt_src; | |
1623 | mh->msg_namelen = sizeof(pkt_src); | |
1624 | mh->msg_control = cmsgbuf.buf; | |
1625 | mh->msg_controllen = sizeof(cmsgbuf.buf); | |
1626 | mh->msg_iov = iov; | |
1627 | mh->msg_iovlen = array_size(iov); | |
1628 | mh->msg_flags = 0; | |
1629 | ||
df655593 | 1630 | nread = recvmsg(pim->gm_socket, mh, MSG_PEEK | MSG_TRUNC); |
5e5034b0 | 1631 | if (nread <= 0) { |
df655593 DL |
1632 | zlog_err("(VRF %s) RX error: %m", pim->vrf->name); |
1633 | pim->gm_rx_drop_sys++; | |
5e5034b0 DL |
1634 | return; |
1635 | } | |
1636 | ||
1637 | if ((size_t)nread > sizeof(rxbuf)) { | |
1638 | iov->iov_base = XMALLOC(MTYPE_GM_PACKET, nread); | |
1639 | iov->iov_len = nread; | |
1640 | } | |
df655593 | 1641 | nread = recvmsg(pim->gm_socket, mh, 0); |
5e5034b0 | 1642 | if (nread <= 0) { |
df655593 DL |
1643 | zlog_err("(VRF %s) RX error: %m", pim->vrf->name); |
1644 | pim->gm_rx_drop_sys++; | |
5e5034b0 DL |
1645 | goto out_free; |
1646 | } | |
1647 | ||
df655593 DL |
1648 | struct interface *ifp; |
1649 | ||
1650 | ifp = if_lookup_by_index(pkt_src->sin6_scope_id, pim->vrf->vrf_id); | |
1651 | if (!ifp || !ifp->info) | |
1652 | goto out_free; | |
1653 | ||
1654 | struct pim_interface *pim_ifp = ifp->info; | |
1655 | struct gm_if *gm_ifp = pim_ifp->mld; | |
1656 | ||
1657 | if (!gm_ifp) | |
5e5034b0 DL |
1658 | goto out_free; |
1659 | ||
1660 | for (cmsg = CMSG_FIRSTHDR(mh); cmsg; cmsg = CMSG_NXTHDR(mh, cmsg)) { | |
1661 | if (cmsg->cmsg_level != SOL_IPV6) | |
1662 | continue; | |
1663 | ||
1664 | switch (cmsg->cmsg_type) { | |
1665 | case IPV6_PKTINFO: | |
1666 | pktinfo = (struct in6_pktinfo *)CMSG_DATA(cmsg); | |
1667 | break; | |
1668 | case IPV6_HOPOPTS: | |
1669 | hopopts = CMSG_DATA(cmsg); | |
1670 | hopopt_len = cmsg->cmsg_len - sizeof(*cmsg); | |
1671 | break; | |
1672 | case IPV6_HOPLIMIT: | |
1673 | hoplimit = (int *)CMSG_DATA(cmsg); | |
1674 | break; | |
1675 | } | |
1676 | } | |
1677 | ||
1678 | if (!pktinfo || !hoplimit) { | |
1679 | zlog_err(log_ifp( | |
1680 | "BUG: packet without IPV6_PKTINFO or IPV6_HOPLIMIT")); | |
df655593 | 1681 | pim->gm_rx_drop_sys++; |
5e5034b0 DL |
1682 | goto out_free; |
1683 | } | |
1684 | ||
1685 | if (*hoplimit != 1) { | |
1686 | zlog_err(log_pkt_src("packet with hop limit != 1")); | |
aa2f9349 DL |
1687 | /* spoofing attempt => count on srcaddr counter */ |
1688 | gm_ifp->stats.rx_drop_srcaddr++; | |
5e5034b0 DL |
1689 | goto out_free; |
1690 | } | |
1691 | ||
1692 | if (!ip6_check_hopopts_ra(hopopts, hopopt_len, IP6_ALERT_MLD)) { | |
1693 | zlog_err(log_pkt_src( | |
1694 | "packet without IPv6 Router Alert MLD option")); | |
aa2f9349 | 1695 | gm_ifp->stats.rx_drop_ra++; |
5e5034b0 DL |
1696 | goto out_free; |
1697 | } | |
1698 | ||
1699 | if (IN6_IS_ADDR_UNSPECIFIED(&pkt_src->sin6_addr)) | |
1700 | /* reports from :: happen in normal operation for DAD, so | |
1701 | * don't spam log messages about this | |
1702 | */ | |
1703 | goto out_free; | |
1704 | ||
1705 | if (!IN6_IS_ADDR_LINKLOCAL(&pkt_src->sin6_addr)) { | |
1706 | zlog_warn(log_pkt_src("packet from invalid source address")); | |
aa2f9349 | 1707 | gm_ifp->stats.rx_drop_srcaddr++; |
5e5034b0 DL |
1708 | goto out_free; |
1709 | } | |
1710 | ||
1711 | pktlen = nread; | |
1712 | if (pktlen < sizeof(struct icmp6_plain_hdr)) { | |
1713 | zlog_warn(log_pkt_src("truncated packet")); | |
aa2f9349 | 1714 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
1715 | goto out_free; |
1716 | } | |
1717 | ||
1718 | gm_rx_process(gm_ifp, pkt_src, &pktinfo->ipi6_addr, iov->iov_base, | |
1719 | pktlen); | |
1720 | ||
1721 | out_free: | |
1722 | if (iov->iov_base != rxbuf) | |
1723 | XFREE(MTYPE_GM_PACKET, iov->iov_base); | |
1724 | } | |
1725 | ||
1726 | static void gm_send_query(struct gm_if *gm_ifp, pim_addr grp, | |
1727 | const pim_addr *srcs, size_t n_srcs, bool s_bit) | |
1728 | { | |
1729 | struct pim_interface *pim_ifp = gm_ifp->ifp->info; | |
1730 | struct sockaddr_in6 dstaddr = { | |
1731 | .sin6_family = AF_INET6, | |
1732 | .sin6_scope_id = gm_ifp->ifp->ifindex, | |
1733 | }; | |
1734 | struct { | |
1735 | struct icmp6_plain_hdr hdr; | |
1736 | struct mld_v2_query_hdr v2_query; | |
1737 | } query = { | |
1738 | /* clang-format off */ | |
1739 | .hdr = { | |
1740 | .icmp6_type = ICMP6_MLD_QUERY, | |
1741 | .icmp6_code = 0, | |
1742 | }, | |
1743 | .v2_query = { | |
1744 | .grp = grp, | |
1745 | }, | |
1746 | /* clang-format on */ | |
1747 | }; | |
1748 | struct ipv6_ph ph6 = { | |
1749 | .src = pim_ifp->ll_lowest, | |
1750 | .ulpl = htons(sizeof(query)), | |
1751 | .next_hdr = IPPROTO_ICMPV6, | |
1752 | }; | |
1753 | union { | |
df655593 DL |
1754 | char buf[CMSG_SPACE(8) /* hop options */ + |
1755 | CMSG_SPACE(sizeof(struct in6_pktinfo))]; | |
5e5034b0 DL |
1756 | struct cmsghdr align; |
1757 | } cmsg = {}; | |
1758 | struct cmsghdr *cmh; | |
1759 | struct msghdr mh[1] = {}; | |
1760 | struct iovec iov[3]; | |
1761 | size_t iov_len; | |
1762 | ssize_t ret, expect_ret; | |
1763 | uint8_t *dp; | |
df655593 | 1764 | struct in6_pktinfo *pktinfo; |
5e5034b0 DL |
1765 | |
1766 | if (if_is_loopback(gm_ifp->ifp)) { | |
1767 | /* Linux is a bit odd with multicast on loopback */ | |
1768 | ph6.src = in6addr_loopback; | |
1769 | dstaddr.sin6_addr = in6addr_loopback; | |
1770 | } else if (pim_addr_is_any(grp)) | |
1771 | dstaddr.sin6_addr = gm_all_hosts; | |
1772 | else | |
1773 | dstaddr.sin6_addr = grp; | |
1774 | ||
1775 | query.v2_query.max_resp_code = | |
1776 | mld_max_resp_encode(gm_ifp->cur_max_resp); | |
1777 | query.v2_query.flags = (gm_ifp->cur_qrv < 8) ? gm_ifp->cur_qrv : 0; | |
1778 | if (s_bit) | |
1779 | query.v2_query.flags |= 0x08; | |
1780 | query.v2_query.qqic = | |
1781 | igmp_msg_encode16to8(gm_ifp->cur_query_intv / 1000); | |
1782 | query.v2_query.n_src = htons(n_srcs); | |
1783 | ||
1784 | ph6.dst = dstaddr.sin6_addr; | |
1785 | ||
1786 | /* ph6 not included in sendmsg */ | |
1787 | iov[0].iov_base = &ph6; | |
1788 | iov[0].iov_len = sizeof(ph6); | |
1789 | iov[1].iov_base = &query; | |
1790 | if (gm_ifp->cur_version == GM_MLDV1) { | |
1791 | iov_len = 2; | |
1792 | iov[1].iov_len = sizeof(query.hdr) + sizeof(struct mld_v1_pkt); | |
1793 | } else if (!n_srcs) { | |
1794 | iov_len = 2; | |
1795 | iov[1].iov_len = sizeof(query); | |
1796 | } else { | |
1797 | iov[1].iov_len = sizeof(query); | |
1798 | iov[2].iov_base = (void *)srcs; | |
1799 | iov[2].iov_len = n_srcs * sizeof(srcs[0]); | |
1800 | iov_len = 3; | |
1801 | } | |
1802 | ||
1803 | query.hdr.icmp6_cksum = in_cksumv(iov, iov_len); | |
1804 | ||
55eb347d | 1805 | if (PIM_DEBUG_GM_PACKETS) |
5e5034b0 DL |
1806 | zlog_debug( |
1807 | log_ifp("MLD query %pPA -> %pI6 (grp=%pPA, %zu srcs)"), | |
1808 | &pim_ifp->ll_lowest, &dstaddr.sin6_addr, &grp, n_srcs); | |
1809 | ||
1810 | mh->msg_name = &dstaddr; | |
1811 | mh->msg_namelen = sizeof(dstaddr); | |
1812 | mh->msg_iov = iov + 1; | |
1813 | mh->msg_iovlen = iov_len - 1; | |
1814 | mh->msg_control = &cmsg; | |
1815 | mh->msg_controllen = sizeof(cmsg.buf); | |
df655593 | 1816 | |
5e5034b0 DL |
1817 | cmh = CMSG_FIRSTHDR(mh); |
1818 | cmh->cmsg_level = IPPROTO_IPV6; | |
1819 | cmh->cmsg_type = IPV6_HOPOPTS; | |
1820 | cmh->cmsg_len = CMSG_LEN(8); | |
1821 | dp = CMSG_DATA(cmh); | |
1822 | *dp++ = 0; /* next header */ | |
1823 | *dp++ = 0; /* length (8-byte blocks, minus 1) */ | |
1824 | *dp++ = IP6OPT_ROUTER_ALERT; /* router alert */ | |
1825 | *dp++ = 2; /* length */ | |
1826 | *dp++ = 0; /* value (2 bytes) */ | |
1827 | *dp++ = 0; /* value (2 bytes) (0 = MLD) */ | |
1828 | *dp++ = 0; /* pad0 */ | |
1829 | *dp++ = 0; /* pad0 */ | |
1830 | ||
df655593 DL |
1831 | cmh = CMSG_NXTHDR(mh, cmh); |
1832 | cmh->cmsg_level = IPPROTO_IPV6; | |
1833 | cmh->cmsg_type = IPV6_PKTINFO; | |
1834 | cmh->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); | |
1835 | pktinfo = (struct in6_pktinfo *)CMSG_DATA(cmh); | |
1836 | pktinfo->ipi6_ifindex = gm_ifp->ifp->ifindex; | |
1837 | pktinfo->ipi6_addr = gm_ifp->cur_ll_lowest; | |
1838 | ||
5e5034b0 DL |
1839 | expect_ret = iov[1].iov_len; |
1840 | if (iov_len == 3) | |
1841 | expect_ret += iov[2].iov_len; | |
1842 | ||
1843 | frr_with_privs (&pimd_privs) { | |
df655593 | 1844 | ret = sendmsg(gm_ifp->pim->gm_socket, mh, 0); |
5e5034b0 DL |
1845 | } |
1846 | ||
aa2f9349 | 1847 | if (ret != expect_ret) { |
5e5034b0 | 1848 | zlog_warn(log_ifp("failed to send query: %m")); |
aa2f9349 DL |
1849 | gm_ifp->stats.tx_query_fail++; |
1850 | } else { | |
1851 | if (gm_ifp->cur_version == GM_MLDV1) { | |
1852 | if (pim_addr_is_any(grp)) | |
1853 | gm_ifp->stats.tx_query_old_general++; | |
1854 | else | |
1855 | gm_ifp->stats.tx_query_old_group++; | |
1856 | } else { | |
1857 | if (pim_addr_is_any(grp)) | |
1858 | gm_ifp->stats.tx_query_new_general++; | |
1859 | else if (!n_srcs) | |
1860 | gm_ifp->stats.tx_query_new_group++; | |
1861 | else | |
1862 | gm_ifp->stats.tx_query_new_groupsrc++; | |
1863 | } | |
1864 | } | |
5e5034b0 DL |
1865 | } |
1866 | ||
1867 | static void gm_t_query(struct thread *t) | |
1868 | { | |
1869 | struct gm_if *gm_ifp = THREAD_ARG(t); | |
1870 | unsigned int timer_ms = gm_ifp->cur_query_intv; | |
1871 | ||
1872 | if (gm_ifp->n_startup) { | |
1873 | timer_ms /= 4; | |
1874 | gm_ifp->n_startup--; | |
1875 | } | |
1876 | ||
1877 | thread_add_timer_msec(router->master, gm_t_query, gm_ifp, timer_ms, | |
1878 | &gm_ifp->t_query); | |
1879 | ||
1880 | gm_send_query(gm_ifp, PIMADDR_ANY, NULL, 0, false); | |
1881 | } | |
1882 | ||
1883 | static void gm_t_sg_query(struct thread *t) | |
1884 | { | |
1885 | struct gm_sg *sg = THREAD_ARG(t); | |
1886 | ||
1887 | gm_trigger_specific(sg); | |
1888 | } | |
1889 | ||
1890 | /* S,G specific queries (triggered by a member leaving) get a little slack | |
1891 | * time so we can bundle queries for [S1,S2,S3,...],G into the same query | |
1892 | */ | |
1893 | static void gm_send_specific(struct gm_gsq_pending *pend_gsq) | |
1894 | { | |
1895 | struct gm_if *gm_ifp = pend_gsq->iface; | |
1896 | ||
1897 | gm_send_query(gm_ifp, pend_gsq->grp, pend_gsq->srcs, pend_gsq->n_src, | |
1898 | pend_gsq->s_bit); | |
1899 | ||
1900 | gm_gsq_pends_del(gm_ifp->gsq_pends, pend_gsq); | |
1901 | XFREE(MTYPE_GM_GSQ_PENDING, pend_gsq); | |
1902 | } | |
1903 | ||
1904 | static void gm_t_gsq_pend(struct thread *t) | |
1905 | { | |
1906 | struct gm_gsq_pending *pend_gsq = THREAD_ARG(t); | |
1907 | ||
1908 | gm_send_specific(pend_gsq); | |
1909 | } | |
1910 | ||
1911 | static void gm_trigger_specific(struct gm_sg *sg) | |
1912 | { | |
1913 | struct gm_if *gm_ifp = sg->iface; | |
1914 | struct pim_interface *pim_ifp = gm_ifp->ifp->info; | |
1915 | struct gm_gsq_pending *pend_gsq, ref = {}; | |
1916 | ||
1917 | sg->n_query--; | |
1918 | if (sg->n_query) | |
1919 | thread_add_timer_msec(router->master, gm_t_sg_query, sg, | |
1920 | gm_ifp->cur_query_intv_trig, | |
1921 | &sg->t_sg_query); | |
1922 | ||
1923 | if (!IPV6_ADDR_SAME(&gm_ifp->querier, &pim_ifp->ll_lowest)) | |
1924 | return; | |
df655593 | 1925 | if (gm_ifp->pim->gm_socket == -1) |
5e5034b0 DL |
1926 | return; |
1927 | ||
a96d64b0 | 1928 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1929 | zlog_debug(log_sg(sg, "triggered query")); |
1930 | ||
1931 | if (pim_addr_is_any(sg->sgaddr.src)) { | |
1932 | gm_send_query(gm_ifp, sg->sgaddr.grp, NULL, 0, sg->query_sbit); | |
1933 | return; | |
1934 | } | |
1935 | ||
1936 | ref.grp = sg->sgaddr.grp; | |
1937 | ref.s_bit = sg->query_sbit; | |
1938 | ||
1939 | pend_gsq = gm_gsq_pends_find(gm_ifp->gsq_pends, &ref); | |
1940 | if (!pend_gsq) { | |
1941 | pend_gsq = XCALLOC(MTYPE_GM_GSQ_PENDING, sizeof(*pend_gsq)); | |
1942 | pend_gsq->grp = sg->sgaddr.grp; | |
1943 | pend_gsq->s_bit = sg->query_sbit; | |
1944 | pend_gsq->iface = gm_ifp; | |
1945 | gm_gsq_pends_add(gm_ifp->gsq_pends, pend_gsq); | |
1946 | ||
1947 | thread_add_timer_tv(router->master, gm_t_gsq_pend, pend_gsq, | |
1948 | &gm_ifp->cfg_timing_fuzz, | |
1949 | &pend_gsq->t_send); | |
1950 | } | |
1951 | ||
1952 | assert(pend_gsq->n_src < array_size(pend_gsq->srcs)); | |
1953 | ||
1954 | pend_gsq->srcs[pend_gsq->n_src] = sg->sgaddr.src; | |
1955 | pend_gsq->n_src++; | |
1956 | ||
1957 | if (pend_gsq->n_src == array_size(pend_gsq->srcs)) { | |
1958 | THREAD_OFF(pend_gsq->t_send); | |
1959 | gm_send_specific(pend_gsq); | |
1960 | pend_gsq = NULL; | |
1961 | } | |
1962 | } | |
1963 | ||
df655593 | 1964 | static void gm_vrf_socket_incref(struct pim_instance *pim) |
5e5034b0 | 1965 | { |
df655593 | 1966 | struct vrf *vrf = pim->vrf; |
5e5034b0 DL |
1967 | int ret, intval; |
1968 | struct icmp6_filter filter[1]; | |
1969 | ||
df655593 DL |
1970 | if (pim->gm_socket_if_count++ && pim->gm_socket != -1) |
1971 | return; | |
5e5034b0 DL |
1972 | |
1973 | ICMP6_FILTER_SETBLOCKALL(filter); | |
1974 | ICMP6_FILTER_SETPASS(ICMP6_MLD_QUERY, filter); | |
1975 | ICMP6_FILTER_SETPASS(ICMP6_MLD_V1_REPORT, filter); | |
1976 | ICMP6_FILTER_SETPASS(ICMP6_MLD_V1_DONE, filter); | |
1977 | ICMP6_FILTER_SETPASS(ICMP6_MLD_V2_REPORT, filter); | |
1978 | ||
1979 | frr_with_privs (&pimd_privs) { | |
df655593 DL |
1980 | pim->gm_socket = vrf_socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6, |
1981 | vrf->vrf_id, vrf->name); | |
1982 | if (pim->gm_socket < 0) { | |
1983 | zlog_err("(VRF %s) could not create MLD socket: %m", | |
1984 | vrf->name); | |
5e5034b0 DL |
1985 | return; |
1986 | } | |
1987 | ||
df655593 DL |
1988 | ret = setsockopt(pim->gm_socket, SOL_ICMPV6, ICMP6_FILTER, |
1989 | filter, sizeof(filter)); | |
5e5034b0 | 1990 | if (ret) |
df655593 DL |
1991 | zlog_err("(VRF %s) failed to set ICMP6_FILTER: %m", |
1992 | vrf->name); | |
5e5034b0 DL |
1993 | |
1994 | intval = 1; | |
df655593 | 1995 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_RECVPKTINFO, |
5e5034b0 DL |
1996 | &intval, sizeof(intval)); |
1997 | if (ret) | |
df655593 DL |
1998 | zlog_err("(VRF %s) failed to set IPV6_RECVPKTINFO: %m", |
1999 | vrf->name); | |
5e5034b0 DL |
2000 | |
2001 | intval = 1; | |
df655593 | 2002 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_RECVHOPOPTS, |
5e5034b0 DL |
2003 | &intval, sizeof(intval)); |
2004 | if (ret) | |
df655593 DL |
2005 | zlog_err("(VRF %s) failed to set IPV6_HOPOPTS: %m", |
2006 | vrf->name); | |
5e5034b0 DL |
2007 | |
2008 | intval = 1; | |
df655593 | 2009 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_RECVHOPLIMIT, |
5e5034b0 DL |
2010 | &intval, sizeof(intval)); |
2011 | if (ret) | |
df655593 DL |
2012 | zlog_err("(VRF %s) failed to set IPV6_HOPLIMIT: %m", |
2013 | vrf->name); | |
5e5034b0 DL |
2014 | |
2015 | intval = 1; | |
df655593 | 2016 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_MULTICAST_LOOP, |
5e5034b0 DL |
2017 | &intval, sizeof(intval)); |
2018 | if (ret) | |
2019 | zlog_err( | |
df655593 DL |
2020 | "(VRF %s) failed to disable IPV6_MULTICAST_LOOP: %m", |
2021 | vrf->name); | |
5e5034b0 DL |
2022 | |
2023 | intval = 1; | |
df655593 | 2024 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_MULTICAST_HOPS, |
5e5034b0 DL |
2025 | &intval, sizeof(intval)); |
2026 | if (ret) | |
df655593 DL |
2027 | zlog_err( |
2028 | "(VRF %s) failed to set IPV6_MULTICAST_HOPS: %m", | |
2029 | vrf->name); | |
5e5034b0 DL |
2030 | |
2031 | /* NB: IPV6_MULTICAST_ALL does not completely bypass multicast | |
2032 | * RX filtering in Linux. It only means "receive all groups | |
2033 | * that something on the system has joined". To actually | |
2034 | * receive *all* MLD packets - which is what we need - | |
2035 | * multicast routing must be enabled on the interface. And | |
2036 | * this only works for MLD packets specifically. | |
2037 | * | |
2038 | * For reference, check ip6_mc_input() in net/ipv6/ip6_input.c | |
2039 | * and in particular the #ifdef CONFIG_IPV6_MROUTE block there. | |
2040 | * | |
2041 | * Also note that the code there explicitly checks for the IPv6 | |
2042 | * router alert MLD option (which is required by the RFC to be | |
2043 | * on MLD packets.) That implies trying to support hosts which | |
2044 | * erroneously don't add that option is just not possible. | |
2045 | */ | |
2046 | intval = 1; | |
df655593 | 2047 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_MULTICAST_ALL, |
5e5034b0 DL |
2048 | &intval, sizeof(intval)); |
2049 | if (ret) | |
2050 | zlog_info( | |
df655593 DL |
2051 | "(VRF %s) failed to set IPV6_MULTICAST_ALL: %m (OK on old kernels)", |
2052 | vrf->name); | |
2053 | } | |
5e5034b0 | 2054 | |
df655593 DL |
2055 | thread_add_read(router->master, gm_t_recv, pim, pim->gm_socket, |
2056 | &pim->t_gm_recv); | |
2057 | } | |
2058 | ||
2059 | static void gm_vrf_socket_decref(struct pim_instance *pim) | |
2060 | { | |
2061 | if (--pim->gm_socket_if_count) | |
2062 | return; | |
2063 | ||
2064 | THREAD_OFF(pim->t_gm_recv); | |
2065 | close(pim->gm_socket); | |
2066 | pim->gm_socket = -1; | |
2067 | } | |
2068 | ||
2069 | static void gm_start(struct interface *ifp) | |
2070 | { | |
2071 | struct pim_interface *pim_ifp = ifp->info; | |
2072 | struct gm_if *gm_ifp; | |
2073 | ||
2074 | assert(pim_ifp); | |
2075 | assert(pim_ifp->pim); | |
2076 | assert(pim_ifp->mroute_vif_index >= 0); | |
2077 | assert(!pim_ifp->mld); | |
2078 | ||
2079 | gm_vrf_socket_incref(pim_ifp->pim); | |
2080 | ||
2081 | gm_ifp = XCALLOC(MTYPE_GM_IFACE, sizeof(*gm_ifp)); | |
2082 | gm_ifp->ifp = ifp; | |
2083 | pim_ifp->mld = gm_ifp; | |
2084 | gm_ifp->pim = pim_ifp->pim; | |
2085 | monotime(&gm_ifp->started); | |
2086 | ||
2087 | zlog_info(log_ifp("starting MLD")); | |
2088 | ||
2089 | if (pim_ifp->mld_version == 1) | |
2090 | gm_ifp->cur_version = GM_MLDV1; | |
2091 | else | |
2092 | gm_ifp->cur_version = GM_MLDV2; | |
2093 | ||
914710d7 | 2094 | gm_ifp->cur_qrv = pim_ifp->gm_default_robustness_variable; |
df655593 | 2095 | gm_ifp->cur_query_intv = pim_ifp->gm_default_query_interval * 1000; |
707a9e9a A |
2096 | gm_ifp->cur_query_intv_trig = |
2097 | pim_ifp->gm_specific_query_max_response_time_dsec * 100; | |
914710d7 | 2098 | gm_ifp->cur_max_resp = pim_ifp->gm_query_max_response_time_dsec * 100; |
51b4991f | 2099 | gm_ifp->cur_lmqc = pim_ifp->gm_last_member_query_count; |
df655593 DL |
2100 | |
2101 | gm_ifp->cfg_timing_fuzz.tv_sec = 0; | |
2102 | gm_ifp->cfg_timing_fuzz.tv_usec = 10 * 1000; | |
2103 | ||
2104 | gm_sgs_init(gm_ifp->sgs); | |
2105 | gm_subscribers_init(gm_ifp->subscribers); | |
2106 | gm_packet_expires_init(gm_ifp->expires); | |
2107 | gm_grp_pends_init(gm_ifp->grp_pends); | |
2108 | gm_gsq_pends_init(gm_ifp->gsq_pends); | |
2109 | ||
2110 | frr_with_privs (&pimd_privs) { | |
5e5034b0 | 2111 | struct ipv6_mreq mreq; |
df655593 | 2112 | int ret; |
5e5034b0 DL |
2113 | |
2114 | /* all-MLDv2 group */ | |
2115 | mreq.ipv6mr_multiaddr = gm_all_routers; | |
2116 | mreq.ipv6mr_interface = ifp->ifindex; | |
df655593 DL |
2117 | ret = setsockopt(gm_ifp->pim->gm_socket, SOL_IPV6, |
2118 | IPV6_JOIN_GROUP, &mreq, sizeof(mreq)); | |
5e5034b0 DL |
2119 | if (ret) |
2120 | zlog_err("(%s) failed to join ff02::16 (all-MLDv2): %m", | |
2121 | ifp->name); | |
2122 | } | |
5e5034b0 DL |
2123 | } |
2124 | ||
e309780f | 2125 | void gm_group_delete(struct gm_if *gm_ifp) |
5e5034b0 | 2126 | { |
e309780f | 2127 | struct gm_sg *sg; |
5e5034b0 DL |
2128 | struct gm_packet_state *pkt; |
2129 | struct gm_grp_pending *pend_grp; | |
2130 | struct gm_gsq_pending *pend_gsq; | |
2131 | struct gm_subscriber *subscriber; | |
e309780f SP |
2132 | |
2133 | while ((pkt = gm_packet_expires_first(gm_ifp->expires))) | |
2134 | gm_packet_drop(pkt, false); | |
2135 | ||
2136 | while ((pend_grp = gm_grp_pends_pop(gm_ifp->grp_pends))) { | |
2137 | THREAD_OFF(pend_grp->t_expire); | |
2138 | XFREE(MTYPE_GM_GRP_PENDING, pend_grp); | |
2139 | } | |
2140 | ||
2141 | while ((pend_gsq = gm_gsq_pends_pop(gm_ifp->gsq_pends))) { | |
2142 | THREAD_OFF(pend_gsq->t_send); | |
2143 | XFREE(MTYPE_GM_GSQ_PENDING, pend_gsq); | |
2144 | } | |
2145 | ||
2146 | while ((sg = gm_sgs_pop(gm_ifp->sgs))) { | |
2147 | THREAD_OFF(sg->t_sg_expire); | |
2148 | assertf(!gm_packet_sg_subs_count(sg->subs_negative), "%pSG", | |
2149 | &sg->sgaddr); | |
2150 | assertf(!gm_packet_sg_subs_count(sg->subs_positive), "%pSG", | |
2151 | &sg->sgaddr); | |
2152 | ||
2153 | gm_sg_free(sg); | |
2154 | } | |
2155 | while ((subscriber = gm_subscribers_pop(gm_ifp->subscribers))) { | |
2156 | assertf(!gm_packets_count(subscriber->packets), "%pPA", | |
2157 | &subscriber->addr); | |
2158 | XFREE(MTYPE_GM_SUBSCRIBER, subscriber); | |
2159 | } | |
2160 | } | |
2161 | ||
2162 | void gm_ifp_teardown(struct interface *ifp) | |
2163 | { | |
2164 | struct pim_interface *pim_ifp = ifp->info; | |
2165 | struct gm_if *gm_ifp; | |
5e5034b0 DL |
2166 | |
2167 | if (!pim_ifp || !pim_ifp->mld) | |
2168 | return; | |
2169 | ||
2170 | gm_ifp = pim_ifp->mld; | |
2171 | gm_ifp->stopping = true; | |
95b13dc5 | 2172 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
2173 | zlog_debug(log_ifp("MLD stop")); |
2174 | ||
2175 | THREAD_OFF(gm_ifp->t_query); | |
2176 | THREAD_OFF(gm_ifp->t_other_querier); | |
5e5034b0 DL |
2177 | THREAD_OFF(gm_ifp->t_expire); |
2178 | ||
df655593 DL |
2179 | frr_with_privs (&pimd_privs) { |
2180 | struct ipv6_mreq mreq; | |
2181 | int ret; | |
2182 | ||
2183 | /* all-MLDv2 group */ | |
2184 | mreq.ipv6mr_multiaddr = gm_all_routers; | |
2185 | mreq.ipv6mr_interface = ifp->ifindex; | |
2186 | ret = setsockopt(gm_ifp->pim->gm_socket, SOL_IPV6, | |
2187 | IPV6_LEAVE_GROUP, &mreq, sizeof(mreq)); | |
2188 | if (ret) | |
2189 | zlog_err( | |
2190 | "(%s) failed to leave ff02::16 (all-MLDv2): %m", | |
2191 | ifp->name); | |
5e5034b0 DL |
2192 | } |
2193 | ||
df655593 DL |
2194 | gm_vrf_socket_decref(gm_ifp->pim); |
2195 | ||
e309780f | 2196 | gm_group_delete(gm_ifp); |
5e5034b0 DL |
2197 | |
2198 | gm_grp_pends_fini(gm_ifp->grp_pends); | |
2199 | gm_packet_expires_fini(gm_ifp->expires); | |
2200 | gm_subscribers_fini(gm_ifp->subscribers); | |
2201 | gm_sgs_fini(gm_ifp->sgs); | |
2202 | ||
2203 | XFREE(MTYPE_GM_IFACE, gm_ifp); | |
2204 | pim_ifp->mld = NULL; | |
2205 | } | |
2206 | ||
2207 | static void gm_update_ll(struct interface *ifp) | |
2208 | { | |
2209 | struct pim_interface *pim_ifp = ifp->info; | |
f4e8f5d4 | 2210 | struct gm_if *gm_ifp = pim_ifp->mld; |
5e5034b0 DL |
2211 | bool was_querier; |
2212 | ||
2213 | was_querier = | |
2214 | !IPV6_ADDR_CMP(&gm_ifp->cur_ll_lowest, &gm_ifp->querier) && | |
2215 | !pim_addr_is_any(gm_ifp->querier); | |
2216 | ||
2217 | gm_ifp->cur_ll_lowest = pim_ifp->ll_lowest; | |
2218 | if (was_querier) | |
2219 | gm_ifp->querier = pim_ifp->ll_lowest; | |
2220 | THREAD_OFF(gm_ifp->t_query); | |
2221 | ||
2222 | if (pim_addr_is_any(gm_ifp->cur_ll_lowest)) { | |
2223 | if (was_querier) | |
2224 | zlog_info(log_ifp( | |
2225 | "lost link-local address, stopping querier")); | |
2226 | return; | |
2227 | } | |
2228 | ||
2229 | if (was_querier) | |
2230 | zlog_info(log_ifp("new link-local %pPA while querier"), | |
2231 | &gm_ifp->cur_ll_lowest); | |
2232 | else if (IPV6_ADDR_CMP(&gm_ifp->cur_ll_lowest, &gm_ifp->querier) < 0 || | |
2233 | pim_addr_is_any(gm_ifp->querier)) { | |
2234 | zlog_info(log_ifp("new link-local %pPA, becoming querier"), | |
2235 | &gm_ifp->cur_ll_lowest); | |
2236 | gm_ifp->querier = gm_ifp->cur_ll_lowest; | |
2237 | } else | |
2238 | return; | |
2239 | ||
5e5034b0 DL |
2240 | gm_ifp->n_startup = gm_ifp->cur_qrv; |
2241 | thread_execute(router->master, gm_t_query, gm_ifp, 0); | |
2242 | } | |
2243 | ||
2244 | void gm_ifp_update(struct interface *ifp) | |
2245 | { | |
2246 | struct pim_interface *pim_ifp = ifp->info; | |
2247 | struct gm_if *gm_ifp; | |
2248 | bool changed = false; | |
2249 | ||
2250 | if (!pim_ifp) | |
2251 | return; | |
2252 | if (!if_is_operative(ifp) || !pim_ifp->pim || | |
2253 | pim_ifp->mroute_vif_index < 0) { | |
2254 | gm_ifp_teardown(ifp); | |
2255 | return; | |
2256 | } | |
2257 | ||
5c1b3cd2 A |
2258 | /* |
2259 | * If ipv6 mld is not enabled on interface, do not start mld activites. | |
2260 | */ | |
2261 | if (!pim_ifp->gm_enable) | |
2262 | return; | |
2263 | ||
2264 | if (!pim_ifp->mld) { | |
2265 | changed = true; | |
5e5034b0 | 2266 | gm_start(ifp); |
5c1b3cd2 | 2267 | } |
5e5034b0 DL |
2268 | |
2269 | gm_ifp = pim_ifp->mld; | |
2270 | if (IPV6_ADDR_CMP(&pim_ifp->ll_lowest, &gm_ifp->cur_ll_lowest)) | |
2271 | gm_update_ll(ifp); | |
2272 | ||
2273 | unsigned int cfg_query_intv = pim_ifp->gm_default_query_interval * 1000; | |
2274 | ||
2275 | if (gm_ifp->cur_query_intv != cfg_query_intv) { | |
2276 | gm_ifp->cur_query_intv = cfg_query_intv; | |
707a9e9a A |
2277 | changed = true; |
2278 | } | |
2279 | ||
2280 | unsigned int cfg_query_intv_trig = | |
2281 | pim_ifp->gm_specific_query_max_response_time_dsec * 100; | |
2282 | ||
2283 | if (gm_ifp->cur_query_intv_trig != cfg_query_intv_trig) { | |
2284 | gm_ifp->cur_query_intv_trig = cfg_query_intv_trig; | |
5e5034b0 DL |
2285 | changed = true; |
2286 | } | |
2287 | ||
914710d7 A |
2288 | unsigned int cfg_max_response = |
2289 | pim_ifp->gm_query_max_response_time_dsec * 100; | |
2290 | ||
2291 | if (gm_ifp->cur_max_resp != cfg_max_response) | |
2292 | gm_ifp->cur_max_resp = cfg_max_response; | |
2293 | ||
51b4991f A |
2294 | if (gm_ifp->cur_lmqc != pim_ifp->gm_last_member_query_count) |
2295 | gm_ifp->cur_lmqc = pim_ifp->gm_last_member_query_count; | |
2296 | ||
5e5034b0 DL |
2297 | enum gm_version cfg_version; |
2298 | ||
2299 | if (pim_ifp->mld_version == 1) | |
2300 | cfg_version = GM_MLDV1; | |
2301 | else | |
2302 | cfg_version = GM_MLDV2; | |
2303 | if (gm_ifp->cur_version != cfg_version) { | |
2304 | gm_ifp->cur_version = cfg_version; | |
2305 | changed = true; | |
2306 | } | |
2307 | ||
2308 | if (changed) { | |
a96d64b0 | 2309 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
2310 | zlog_debug(log_ifp( |
2311 | "MLD querier config changed, querying")); | |
2312 | gm_bump_querier(gm_ifp); | |
2313 | } | |
2314 | } | |
2315 | ||
d2951219 DL |
2316 | /* |
2317 | * CLI (show commands only) | |
2318 | */ | |
5e5034b0 DL |
2319 | |
2320 | #include "lib/command.h" | |
2321 | ||
2322 | #ifndef VTYSH_EXTRACT_PL | |
2323 | #include "pimd/pim6_mld_clippy.c" | |
2324 | #endif | |
2325 | ||
d2951219 DL |
2326 | static struct vrf *gm_cmd_vrf_lookup(struct vty *vty, const char *vrf_str, |
2327 | int *err) | |
2328 | { | |
2329 | struct vrf *ret; | |
2330 | ||
2331 | if (!vrf_str) | |
2332 | return vrf_lookup_by_id(VRF_DEFAULT); | |
2333 | if (!strcmp(vrf_str, "all")) | |
2334 | return NULL; | |
2335 | ret = vrf_lookup_by_name(vrf_str); | |
2336 | if (ret) | |
2337 | return ret; | |
2338 | ||
2339 | vty_out(vty, "%% VRF %pSQq does not exist\n", vrf_str); | |
2340 | *err = CMD_WARNING; | |
2341 | return NULL; | |
2342 | } | |
2343 | ||
2344 | static void gm_show_if_one_detail(struct vty *vty, struct interface *ifp) | |
2345 | { | |
2346 | struct pim_interface *pim_ifp = (struct pim_interface *)ifp->info; | |
2347 | struct gm_if *gm_ifp; | |
2348 | bool querier; | |
2349 | size_t i; | |
2350 | ||
2351 | if (!pim_ifp) { | |
2352 | vty_out(vty, "Interface %s: no PIM/MLD config\n\n", ifp->name); | |
2353 | return; | |
2354 | } | |
2355 | ||
2356 | gm_ifp = pim_ifp->mld; | |
2357 | if (!gm_ifp) { | |
2358 | vty_out(vty, "Interface %s: MLD not running\n\n", ifp->name); | |
2359 | return; | |
2360 | } | |
2361 | ||
2362 | querier = IPV6_ADDR_SAME(&gm_ifp->querier, &pim_ifp->ll_lowest); | |
2363 | ||
2364 | vty_out(vty, "Interface %s: MLD running\n", ifp->name); | |
2365 | vty_out(vty, " Uptime: %pTVMs\n", &gm_ifp->started); | |
2366 | vty_out(vty, " MLD version: %d\n", gm_ifp->cur_version); | |
2367 | vty_out(vty, " Querier: %pPA%s\n", &gm_ifp->querier, | |
2368 | querier ? " (this system)" : ""); | |
2369 | vty_out(vty, " Query timer: %pTH\n", gm_ifp->t_query); | |
2370 | vty_out(vty, " Other querier timer: %pTH\n", | |
2371 | gm_ifp->t_other_querier); | |
2372 | vty_out(vty, " Robustness value: %u\n", gm_ifp->cur_qrv); | |
2373 | vty_out(vty, " Query interval: %ums\n", | |
2374 | gm_ifp->cur_query_intv); | |
2375 | vty_out(vty, " Query response timer: %ums\n", gm_ifp->cur_max_resp); | |
2376 | vty_out(vty, " Last member query intv.: %ums\n", | |
2377 | gm_ifp->cur_query_intv_trig); | |
2378 | vty_out(vty, " %u expiry timers from general queries:\n", | |
2379 | gm_ifp->n_pending); | |
2380 | for (i = 0; i < gm_ifp->n_pending; i++) { | |
2381 | struct gm_general_pending *p = &gm_ifp->pending[i]; | |
2382 | ||
2383 | vty_out(vty, " %9pTVMs ago (query) -> %9pTVMu (expiry)\n", | |
2384 | &p->query, &p->expiry); | |
2385 | } | |
2386 | vty_out(vty, " %zu expiry timers from *,G queries\n", | |
2387 | gm_grp_pends_count(gm_ifp->grp_pends)); | |
2388 | vty_out(vty, " %zu expiry timers from S,G queries\n", | |
2389 | gm_gsq_pends_count(gm_ifp->gsq_pends)); | |
2390 | vty_out(vty, " %zu total *,G/S,G from %zu hosts in %zu bundles\n", | |
2391 | gm_sgs_count(gm_ifp->sgs), | |
2392 | gm_subscribers_count(gm_ifp->subscribers), | |
2393 | gm_packet_expires_count(gm_ifp->expires)); | |
2394 | vty_out(vty, "\n"); | |
2395 | } | |
2396 | ||
2397 | static void gm_show_if_one(struct vty *vty, struct interface *ifp, | |
2398 | json_object *js_if) | |
2399 | { | |
2400 | struct pim_interface *pim_ifp = (struct pim_interface *)ifp->info; | |
2401 | struct gm_if *gm_ifp = pim_ifp->mld; | |
2402 | bool querier; | |
2403 | ||
2404 | if (!gm_ifp) { | |
2405 | if (js_if) | |
2406 | json_object_string_add(js_if, "state", "down"); | |
2407 | else | |
2408 | vty_out(vty, "%-16s %5s\n", ifp->name, "down"); | |
2409 | return; | |
2410 | } | |
2411 | ||
2412 | querier = IPV6_ADDR_SAME(&gm_ifp->querier, &pim_ifp->ll_lowest); | |
2413 | ||
2414 | if (js_if) { | |
cb406d5c | 2415 | json_object_string_add(js_if, "name", ifp->name); |
d2951219 DL |
2416 | json_object_string_add(js_if, "state", "up"); |
2417 | json_object_string_addf(js_if, "version", "%d", | |
2418 | gm_ifp->cur_version); | |
2419 | json_object_string_addf(js_if, "upTime", "%pTVMs", | |
2420 | &gm_ifp->started); | |
2421 | json_object_boolean_add(js_if, "querier", querier); | |
2422 | json_object_string_addf(js_if, "querierIp", "%pPA", | |
2423 | &gm_ifp->querier); | |
2424 | if (querier) | |
2425 | json_object_string_addf(js_if, "queryTimer", "%pTH", | |
2426 | gm_ifp->t_query); | |
2427 | else | |
2428 | json_object_string_addf(js_if, "otherQuerierTimer", | |
2429 | "%pTH", | |
2430 | gm_ifp->t_other_querier); | |
cb406d5c A |
2431 | json_object_int_add(js_if, "timerRobustnessValue", |
2432 | gm_ifp->cur_qrv); | |
2433 | json_object_int_add(js_if, "timerQueryIntervalMsec", | |
2434 | gm_ifp->cur_query_intv); | |
2435 | json_object_int_add(js_if, "timerQueryResponseTimerMsec", | |
2436 | gm_ifp->cur_max_resp); | |
2437 | json_object_int_add(js_if, "timerLastMemberQueryIntervalMsec", | |
2438 | gm_ifp->cur_query_intv_trig); | |
d2951219 DL |
2439 | } else { |
2440 | vty_out(vty, "%-16s %-5s %d %-25pPA %-5s %11pTH %pTVMs\n", | |
2441 | ifp->name, "up", gm_ifp->cur_version, &gm_ifp->querier, | |
2442 | querier ? "query" : "other", | |
2443 | querier ? gm_ifp->t_query : gm_ifp->t_other_querier, | |
2444 | &gm_ifp->started); | |
2445 | } | |
2446 | } | |
2447 | ||
2448 | static void gm_show_if_vrf(struct vty *vty, struct vrf *vrf, const char *ifname, | |
2449 | bool detail, json_object *js) | |
2450 | { | |
2451 | struct interface *ifp; | |
2452 | json_object *js_vrf; | |
2453 | ||
2454 | if (js) { | |
2455 | js_vrf = json_object_new_object(); | |
2456 | json_object_object_add(js, vrf->name, js_vrf); | |
2457 | } | |
2458 | ||
2459 | FOR_ALL_INTERFACES (vrf, ifp) { | |
2460 | json_object *js_if = NULL; | |
2461 | ||
2462 | if (ifname && strcmp(ifp->name, ifname)) | |
2463 | continue; | |
2464 | if (detail && !js) { | |
2465 | gm_show_if_one_detail(vty, ifp); | |
2466 | continue; | |
2467 | } | |
2468 | ||
2469 | if (!ifp->info) | |
2470 | continue; | |
2471 | if (js) { | |
2472 | js_if = json_object_new_object(); | |
2473 | json_object_object_add(js_vrf, ifp->name, js_if); | |
2474 | } | |
2475 | ||
2476 | gm_show_if_one(vty, ifp, js_if); | |
2477 | } | |
2478 | } | |
2479 | ||
2480 | static void gm_show_if(struct vty *vty, struct vrf *vrf, const char *ifname, | |
2481 | bool detail, json_object *js) | |
2482 | { | |
2483 | if (!js && !detail) | |
2484 | vty_out(vty, "%-16s %-5s V %-25s %-18s %s\n", "Interface", | |
2485 | "State", "Querier", "Timer", "Uptime"); | |
2486 | ||
2487 | if (vrf) | |
2488 | gm_show_if_vrf(vty, vrf, ifname, detail, js); | |
2489 | else | |
2490 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) | |
2491 | gm_show_if_vrf(vty, vrf, ifname, detail, js); | |
2492 | } | |
2493 | ||
2494 | DEFPY(gm_show_interface, | |
2495 | gm_show_interface_cmd, | |
ad56b07c | 2496 | "show ipv6 mld [vrf <VRF|all>$vrf_str] interface [IFNAME | detail$detail] [json$json]", |
d2951219 DL |
2497 | SHOW_STR |
2498 | IPV6_STR | |
2499 | MLD_STR | |
2500 | VRF_FULL_CMD_HELP_STR | |
2501 | "MLD interface information\n" | |
ad56b07c | 2502 | "Interface name\n" |
d2951219 DL |
2503 | "Detailed output\n" |
2504 | JSON_STR) | |
2505 | { | |
2506 | int ret = CMD_SUCCESS; | |
2507 | struct vrf *vrf; | |
2508 | json_object *js = NULL; | |
2509 | ||
2510 | vrf = gm_cmd_vrf_lookup(vty, vrf_str, &ret); | |
2511 | if (ret != CMD_SUCCESS) | |
2512 | return ret; | |
2513 | ||
2514 | if (json) | |
2515 | js = json_object_new_object(); | |
2516 | gm_show_if(vty, vrf, ifname, !!detail, js); | |
2517 | return vty_json(vty, js); | |
2518 | } | |
2519 | ||
2520 | static void gm_show_stats_one(struct vty *vty, struct gm_if *gm_ifp, | |
2521 | json_object *js_if) | |
2522 | { | |
2523 | struct gm_if_stats *stats = &gm_ifp->stats; | |
2524 | /* clang-format off */ | |
2525 | struct { | |
2526 | const char *text; | |
2527 | const char *js_key; | |
2528 | uint64_t *val; | |
2529 | } *item, items[] = { | |
2530 | { "v2 reports received", "rxV2Reports", &stats->rx_new_report }, | |
2531 | { "v1 reports received", "rxV1Reports", &stats->rx_old_report }, | |
2532 | { "v1 done received", "rxV1Done", &stats->rx_old_leave }, | |
2533 | ||
2534 | { "v2 *,* queries received", "rxV2QueryGeneral", &stats->rx_query_new_general }, | |
2535 | { "v2 *,G queries received", "rxV2QueryGroup", &stats->rx_query_new_group }, | |
2536 | { "v2 S,G queries received", "rxV2QueryGroupSource", &stats->rx_query_new_groupsrc }, | |
2537 | { "v2 S-bit queries received", "rxV2QuerySBit", &stats->rx_query_new_sbit }, | |
2538 | { "v1 *,* queries received", "rxV1QueryGeneral", &stats->rx_query_old_general }, | |
2539 | { "v1 *,G queries received", "rxV1QueryGroup", &stats->rx_query_old_group }, | |
2540 | ||
2541 | { "v2 *,* queries sent", "txV2QueryGeneral", &stats->tx_query_new_general }, | |
2542 | { "v2 *,G queries sent", "txV2QueryGroup", &stats->tx_query_new_group }, | |
2543 | { "v2 S,G queries sent", "txV2QueryGroupSource", &stats->tx_query_new_groupsrc }, | |
2544 | { "v1 *,* queries sent", "txV1QueryGeneral", &stats->tx_query_old_general }, | |
2545 | { "v1 *,G queries sent", "txV1QueryGroup", &stats->tx_query_old_group }, | |
2546 | { "TX errors", "txErrors", &stats->tx_query_fail }, | |
2547 | ||
d2951219 DL |
2548 | { "RX dropped (checksum error)", "rxDropChecksum", &stats->rx_drop_csum }, |
2549 | { "RX dropped (invalid source)", "rxDropSrcAddr", &stats->rx_drop_srcaddr }, | |
2550 | { "RX dropped (invalid dest.)", "rxDropDstAddr", &stats->rx_drop_dstaddr }, | |
2551 | { "RX dropped (missing alert)", "rxDropRtrAlert", &stats->rx_drop_ra }, | |
2552 | { "RX dropped (malformed pkt.)", "rxDropMalformed", &stats->rx_drop_malformed }, | |
2553 | { "RX truncated reports", "rxTruncatedRep", &stats->rx_trunc_report }, | |
2554 | }; | |
2555 | /* clang-format on */ | |
2556 | ||
2557 | for (item = items; item < items + array_size(items); item++) { | |
2558 | if (js_if) | |
2559 | json_object_int_add(js_if, item->js_key, *item->val); | |
2560 | else | |
2561 | vty_out(vty, " %-30s %" PRIu64 "\n", item->text, | |
2562 | *item->val); | |
2563 | } | |
2564 | } | |
2565 | ||
2566 | static void gm_show_stats_vrf(struct vty *vty, struct vrf *vrf, | |
2567 | const char *ifname, json_object *js) | |
2568 | { | |
2569 | struct interface *ifp; | |
2570 | json_object *js_vrf; | |
2571 | ||
2572 | if (js) { | |
2573 | js_vrf = json_object_new_object(); | |
2574 | json_object_object_add(js, vrf->name, js_vrf); | |
2575 | } | |
2576 | ||
2577 | FOR_ALL_INTERFACES (vrf, ifp) { | |
2578 | struct pim_interface *pim_ifp; | |
2579 | struct gm_if *gm_ifp; | |
2580 | json_object *js_if = NULL; | |
2581 | ||
2582 | if (ifname && strcmp(ifp->name, ifname)) | |
2583 | continue; | |
2584 | ||
2585 | if (!ifp->info) | |
2586 | continue; | |
2587 | pim_ifp = ifp->info; | |
2588 | if (!pim_ifp->mld) | |
2589 | continue; | |
2590 | gm_ifp = pim_ifp->mld; | |
2591 | ||
2592 | if (js) { | |
2593 | js_if = json_object_new_object(); | |
2594 | json_object_object_add(js_vrf, ifp->name, js_if); | |
2595 | } else { | |
2596 | vty_out(vty, "Interface: %s\n", ifp->name); | |
2597 | } | |
2598 | gm_show_stats_one(vty, gm_ifp, js_if); | |
2599 | if (!js) | |
2600 | vty_out(vty, "\n"); | |
2601 | } | |
2602 | } | |
2603 | ||
2604 | DEFPY(gm_show_interface_stats, | |
2605 | gm_show_interface_stats_cmd, | |
2606 | "show ipv6 mld [vrf <VRF|all>$vrf_str] statistics [interface IFNAME] [json$json]", | |
2607 | SHOW_STR | |
2608 | IPV6_STR | |
2609 | MLD_STR | |
2610 | VRF_FULL_CMD_HELP_STR | |
2611 | "MLD statistics\n" | |
2612 | INTERFACE_STR | |
2613 | "Interface name\n" | |
2614 | JSON_STR) | |
2615 | { | |
2616 | int ret = CMD_SUCCESS; | |
2617 | struct vrf *vrf; | |
2618 | json_object *js = NULL; | |
2619 | ||
2620 | vrf = gm_cmd_vrf_lookup(vty, vrf_str, &ret); | |
2621 | if (ret != CMD_SUCCESS) | |
2622 | return ret; | |
2623 | ||
2624 | if (json) | |
2625 | js = json_object_new_object(); | |
2626 | ||
2627 | if (vrf) | |
2628 | gm_show_stats_vrf(vty, vrf, ifname, js); | |
2629 | else | |
2630 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) | |
2631 | gm_show_stats_vrf(vty, vrf, ifname, js); | |
2632 | return vty_json(vty, js); | |
2633 | } | |
2634 | ||
2635 | static void gm_show_joins_one(struct vty *vty, struct gm_if *gm_ifp, | |
2636 | const struct prefix_ipv6 *groups, | |
2637 | const struct prefix_ipv6 *sources, bool detail, | |
2638 | json_object *js_if) | |
2639 | { | |
2640 | struct gm_sg *sg, *sg_start; | |
2641 | json_object *js_group = NULL; | |
2642 | pim_addr js_grpaddr = PIMADDR_ANY; | |
2643 | struct gm_subscriber sub_ref = {}, *sub_untracked; | |
2644 | ||
2645 | if (groups) { | |
2646 | struct gm_sg sg_ref = {}; | |
2647 | ||
2648 | sg_ref.sgaddr.grp = pim_addr_from_prefix(groups); | |
2649 | sg_start = gm_sgs_find_gteq(gm_ifp->sgs, &sg_ref); | |
2650 | } else | |
2651 | sg_start = gm_sgs_first(gm_ifp->sgs); | |
2652 | ||
2653 | sub_ref.addr = gm_dummy_untracked; | |
2654 | sub_untracked = gm_subscribers_find(gm_ifp->subscribers, &sub_ref); | |
2655 | /* NB: sub_untracked may be NULL if no untracked joins exist */ | |
2656 | ||
2657 | frr_each_from (gm_sgs, gm_ifp->sgs, sg, sg_start) { | |
2658 | struct timeval *recent = NULL, *untracked = NULL; | |
2659 | json_object *js_src; | |
2660 | ||
2661 | if (groups) { | |
2662 | struct prefix grp_p; | |
2663 | ||
2664 | pim_addr_to_prefix(&grp_p, sg->sgaddr.grp); | |
2665 | if (!prefix_match(groups, &grp_p)) | |
2666 | break; | |
2667 | } | |
2668 | ||
2669 | if (sources) { | |
2670 | struct prefix src_p; | |
2671 | ||
2672 | pim_addr_to_prefix(&src_p, sg->sgaddr.src); | |
2673 | if (!prefix_match(sources, &src_p)) | |
2674 | continue; | |
2675 | } | |
2676 | ||
2677 | if (sg->most_recent) { | |
2678 | struct gm_packet_state *packet; | |
2679 | ||
2680 | packet = gm_packet_sg2state(sg->most_recent); | |
2681 | recent = &packet->received; | |
2682 | } | |
2683 | ||
2684 | if (sub_untracked) { | |
2685 | struct gm_packet_state *packet; | |
2686 | struct gm_packet_sg *item; | |
2687 | ||
2688 | item = gm_packet_sg_find(sg, GM_SUB_POS, sub_untracked); | |
2689 | if (item) { | |
2690 | packet = gm_packet_sg2state(item); | |
2691 | untracked = &packet->received; | |
2692 | } | |
2693 | } | |
2694 | ||
2695 | if (!js_if) { | |
2696 | FMT_NSTD_BEGIN; /* %.0p */ | |
2697 | vty_out(vty, | |
2698 | "%-30pPA %-30pPAs %-16s %10.0pTVMs %10.0pTVMs %10.0pTVMs\n", | |
2699 | &sg->sgaddr.grp, &sg->sgaddr.src, | |
2700 | gm_states[sg->state], recent, untracked, | |
2701 | &sg->created); | |
2702 | ||
2703 | if (!detail) | |
2704 | continue; | |
2705 | ||
2706 | struct gm_packet_sg *item; | |
2707 | struct gm_packet_state *packet; | |
2708 | ||
2709 | frr_each (gm_packet_sg_subs, sg->subs_positive, item) { | |
2710 | packet = gm_packet_sg2state(item); | |
2711 | ||
2712 | if (packet->subscriber == sub_untracked) | |
2713 | continue; | |
2714 | vty_out(vty, " %-58pPA %-16s %10.0pTVMs\n", | |
2715 | &packet->subscriber->addr, "(JOIN)", | |
2716 | &packet->received); | |
2717 | } | |
2718 | frr_each (gm_packet_sg_subs, sg->subs_negative, item) { | |
2719 | packet = gm_packet_sg2state(item); | |
2720 | ||
2721 | if (packet->subscriber == sub_untracked) | |
2722 | continue; | |
2723 | vty_out(vty, " %-58pPA %-16s %10.0pTVMs\n", | |
2724 | &packet->subscriber->addr, "(PRUNE)", | |
2725 | &packet->received); | |
2726 | } | |
2727 | FMT_NSTD_END; /* %.0p */ | |
2728 | continue; | |
2729 | } | |
2730 | /* if (js_if) */ | |
2731 | ||
2732 | if (!js_group || pim_addr_cmp(js_grpaddr, sg->sgaddr.grp)) { | |
2733 | js_group = json_object_new_object(); | |
2734 | json_object_object_addf(js_if, js_group, "%pPA", | |
2735 | &sg->sgaddr.grp); | |
2736 | js_grpaddr = sg->sgaddr.grp; | |
2737 | } | |
2738 | ||
2739 | js_src = json_object_new_object(); | |
2740 | json_object_object_addf(js_group, js_src, "%pPA", | |
2741 | &sg->sgaddr.src); | |
2742 | ||
2743 | json_object_string_add(js_src, "state", gm_states[sg->state]); | |
2744 | json_object_string_addf(js_src, "created", "%pTVMs", | |
2745 | &sg->created); | |
2746 | json_object_string_addf(js_src, "lastSeen", "%pTVMs", recent); | |
2747 | ||
2748 | if (untracked) | |
2749 | json_object_string_addf(js_src, "untrackedLastSeen", | |
2750 | "%pTVMs", untracked); | |
2751 | if (!detail) | |
2752 | continue; | |
2753 | ||
2754 | json_object *js_subs; | |
2755 | struct gm_packet_sg *item; | |
2756 | struct gm_packet_state *packet; | |
2757 | ||
2758 | js_subs = json_object_new_object(); | |
2759 | json_object_object_add(js_src, "joinedBy", js_subs); | |
2760 | frr_each (gm_packet_sg_subs, sg->subs_positive, item) { | |
2761 | packet = gm_packet_sg2state(item); | |
2762 | if (packet->subscriber == sub_untracked) | |
2763 | continue; | |
2764 | ||
2765 | json_object *js_sub; | |
2766 | ||
2767 | js_sub = json_object_new_object(); | |
2768 | json_object_object_addf(js_subs, js_sub, "%pPA", | |
2769 | &packet->subscriber->addr); | |
2770 | json_object_string_addf(js_sub, "lastSeen", "%pTVMs", | |
2771 | &packet->received); | |
2772 | } | |
2773 | ||
2774 | js_subs = json_object_new_object(); | |
2775 | json_object_object_add(js_src, "prunedBy", js_subs); | |
2776 | frr_each (gm_packet_sg_subs, sg->subs_negative, item) { | |
2777 | packet = gm_packet_sg2state(item); | |
2778 | if (packet->subscriber == sub_untracked) | |
2779 | continue; | |
2780 | ||
2781 | json_object *js_sub; | |
2782 | ||
2783 | js_sub = json_object_new_object(); | |
2784 | json_object_object_addf(js_subs, js_sub, "%pPA", | |
2785 | &packet->subscriber->addr); | |
2786 | json_object_string_addf(js_sub, "lastSeen", "%pTVMs", | |
2787 | &packet->received); | |
2788 | } | |
2789 | } | |
2790 | } | |
2791 | ||
2792 | static void gm_show_joins_vrf(struct vty *vty, struct vrf *vrf, | |
2793 | const char *ifname, | |
2794 | const struct prefix_ipv6 *groups, | |
2795 | const struct prefix_ipv6 *sources, bool detail, | |
2796 | json_object *js) | |
2797 | { | |
2798 | struct interface *ifp; | |
2799 | json_object *js_vrf; | |
2800 | ||
2801 | if (js) { | |
2802 | js_vrf = json_object_new_object(); | |
2803 | json_object_object_add(js, vrf->name, js_vrf); | |
2804 | } | |
2805 | ||
2806 | FOR_ALL_INTERFACES (vrf, ifp) { | |
2807 | struct pim_interface *pim_ifp; | |
2808 | struct gm_if *gm_ifp; | |
2809 | json_object *js_if = NULL; | |
2810 | ||
2811 | if (ifname && strcmp(ifp->name, ifname)) | |
2812 | continue; | |
2813 | ||
2814 | if (!ifp->info) | |
2815 | continue; | |
2816 | pim_ifp = ifp->info; | |
2817 | if (!pim_ifp->mld) | |
2818 | continue; | |
2819 | gm_ifp = pim_ifp->mld; | |
2820 | ||
2821 | if (js) { | |
2822 | js_if = json_object_new_object(); | |
2823 | json_object_object_add(js_vrf, ifp->name, js_if); | |
2824 | } | |
2825 | ||
2826 | if (!js && !ifname) | |
2827 | vty_out(vty, "\nOn interface %s:\n", ifp->name); | |
2828 | ||
2829 | gm_show_joins_one(vty, gm_ifp, groups, sources, detail, js_if); | |
2830 | } | |
2831 | } | |
2832 | ||
2833 | DEFPY(gm_show_interface_joins, | |
2834 | gm_show_interface_joins_cmd, | |
2835 | "show ipv6 mld [vrf <VRF|all>$vrf_str] joins [{interface IFNAME|groups X:X::X:X/M|sources X:X::X:X/M|detail$detail}] [json$json]", | |
2836 | SHOW_STR | |
2837 | IPV6_STR | |
2838 | MLD_STR | |
2839 | VRF_FULL_CMD_HELP_STR | |
2840 | "MLD joined groups & sources\n" | |
2841 | INTERFACE_STR | |
2842 | "Interface name\n" | |
2843 | "Limit output to group range\n" | |
2844 | "Show groups covered by this prefix\n" | |
2845 | "Limit output to source range\n" | |
2846 | "Show sources covered by this prefix\n" | |
2847 | "Show details, including tracked receivers\n" | |
2848 | JSON_STR) | |
2849 | { | |
2850 | int ret = CMD_SUCCESS; | |
2851 | struct vrf *vrf; | |
2852 | json_object *js = NULL; | |
2853 | ||
2854 | vrf = gm_cmd_vrf_lookup(vty, vrf_str, &ret); | |
2855 | if (ret != CMD_SUCCESS) | |
2856 | return ret; | |
2857 | ||
2858 | if (json) | |
2859 | js = json_object_new_object(); | |
2860 | else | |
2861 | vty_out(vty, "%-30s %-30s %-16s %10s %10s %10s\n", "Group", | |
2862 | "Source", "State", "LastSeen", "NonTrkSeen", "Created"); | |
2863 | ||
2864 | if (vrf) | |
2865 | gm_show_joins_vrf(vty, vrf, ifname, groups, sources, !!detail, | |
2866 | js); | |
2867 | else | |
2868 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) | |
2869 | gm_show_joins_vrf(vty, vrf, ifname, groups, sources, | |
2870 | !!detail, js); | |
2871 | return vty_json(vty, js); | |
2872 | } | |
2873 | ||
cdc1b770 SG |
2874 | static void gm_show_groups(struct vty *vty, struct vrf *vrf, bool uj) |
2875 | { | |
2876 | struct interface *ifp; | |
2877 | struct ttable *tt = NULL; | |
2878 | char *table; | |
2879 | json_object *json = NULL; | |
2880 | json_object *json_iface = NULL; | |
2881 | json_object *json_group = NULL; | |
2882 | json_object *json_groups = NULL; | |
2883 | struct pim_instance *pim = vrf->info; | |
2884 | ||
2885 | if (uj) { | |
2886 | json = json_object_new_object(); | |
2887 | json_object_int_add(json, "totalGroups", pim->gm_group_count); | |
2888 | json_object_int_add(json, "watermarkLimit", | |
2889 | pim->gm_watermark_limit); | |
2890 | } else { | |
2891 | /* Prepare table. */ | |
2892 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
2893 | ttable_add_row(tt, "Interface|Group|Version|Uptime"); | |
2894 | tt->style.cell.rpad = 2; | |
2895 | tt->style.corner = '+'; | |
2896 | ttable_restyle(tt); | |
2897 | ||
2898 | vty_out(vty, "Total MLD groups: %u\n", pim->gm_group_count); | |
2899 | vty_out(vty, "Watermark warn limit(%s): %u\n", | |
2900 | pim->gm_watermark_limit ? "Set" : "Not Set", | |
2901 | pim->gm_watermark_limit); | |
2902 | } | |
2903 | ||
2904 | /* scan interfaces */ | |
2905 | FOR_ALL_INTERFACES (vrf, ifp) { | |
2906 | ||
2907 | struct pim_interface *pim_ifp = ifp->info; | |
2908 | struct gm_if *gm_ifp; | |
2909 | struct gm_sg *sg; | |
2910 | ||
2911 | if (!pim_ifp) | |
2912 | continue; | |
2913 | ||
2914 | gm_ifp = pim_ifp->mld; | |
2915 | if (!gm_ifp) | |
2916 | continue; | |
2917 | ||
2918 | /* scan mld groups */ | |
2919 | frr_each (gm_sgs, gm_ifp->sgs, sg) { | |
2920 | ||
2921 | if (uj) { | |
2922 | json_object_object_get_ex(json, ifp->name, | |
2923 | &json_iface); | |
2924 | ||
2925 | if (!json_iface) { | |
2926 | json_iface = json_object_new_object(); | |
2927 | json_object_pim_ifp_add(json_iface, | |
2928 | ifp); | |
2929 | json_object_object_add(json, ifp->name, | |
2930 | json_iface); | |
2931 | json_groups = json_object_new_array(); | |
2932 | json_object_object_add(json_iface, | |
2933 | "groups", | |
2934 | json_groups); | |
2935 | } | |
2936 | ||
2937 | json_group = json_object_new_object(); | |
2938 | json_object_string_addf(json_group, "group", | |
2939 | "%pPAs", | |
2940 | &sg->sgaddr.grp); | |
2941 | ||
2942 | json_object_int_add(json_group, "version", | |
2943 | pim_ifp->mld_version); | |
2944 | json_object_string_addf(json_group, "uptime", | |
2945 | "%pTVMs", &sg->created); | |
2946 | json_object_array_add(json_groups, json_group); | |
2947 | } else { | |
2948 | ttable_add_row(tt, "%s|%pPAs|%d|%pTVMs", | |
2949 | ifp->name, &sg->sgaddr.grp, | |
2950 | pim_ifp->mld_version, | |
2951 | &sg->created); | |
2952 | } | |
2953 | } /* scan gm groups */ | |
2954 | } /* scan interfaces */ | |
2955 | ||
2956 | if (uj) | |
2957 | vty_json(vty, json); | |
2958 | else { | |
2959 | /* Dump the generated table. */ | |
2960 | table = ttable_dump(tt, "\n"); | |
2961 | vty_out(vty, "%s\n", table); | |
2962 | XFREE(MTYPE_TMP, table); | |
2963 | ttable_del(tt); | |
2964 | } | |
2965 | } | |
2966 | ||
2967 | DEFPY(gm_show_mld_groups, | |
2968 | gm_show_mld_groups_cmd, | |
2969 | "show ipv6 mld [vrf <VRF|all>$vrf_str] groups [json$json]", | |
2970 | SHOW_STR | |
2971 | IPV6_STR | |
2972 | MLD_STR | |
2973 | VRF_FULL_CMD_HELP_STR | |
2974 | MLD_GROUP_STR | |
2975 | JSON_STR) | |
2976 | { | |
2977 | int ret = CMD_SUCCESS; | |
2978 | struct vrf *vrf; | |
2979 | ||
2980 | vrf = gm_cmd_vrf_lookup(vty, vrf_str, &ret); | |
2981 | if (ret != CMD_SUCCESS) | |
2982 | return ret; | |
2983 | ||
2984 | if (vrf) | |
2985 | gm_show_groups(vty, vrf, !!json); | |
2986 | else | |
2987 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) | |
2988 | gm_show_groups(vty, vrf, !!json); | |
2989 | ||
2990 | return CMD_SUCCESS; | |
2991 | } | |
2992 | ||
5e5034b0 DL |
2993 | DEFPY(gm_debug_show, |
2994 | gm_debug_show_cmd, | |
2995 | "debug show mld interface IFNAME", | |
2996 | DEBUG_STR | |
2997 | SHOW_STR | |
2998 | "MLD" | |
2999 | INTERFACE_STR | |
3000 | "interface name") | |
3001 | { | |
3002 | struct interface *ifp; | |
3003 | struct pim_interface *pim_ifp; | |
3004 | struct gm_if *gm_ifp; | |
3005 | ||
3006 | ifp = if_lookup_by_name(ifname, VRF_DEFAULT); | |
3007 | if (!ifp) { | |
3008 | vty_out(vty, "%% no such interface: %pSQq\n", ifname); | |
3009 | return CMD_WARNING; | |
3010 | } | |
3011 | ||
3012 | pim_ifp = ifp->info; | |
3013 | if (!pim_ifp) { | |
3014 | vty_out(vty, "%% no PIM state for interface %pSQq\n", ifname); | |
3015 | return CMD_WARNING; | |
3016 | } | |
3017 | ||
3018 | gm_ifp = pim_ifp->mld; | |
3019 | if (!gm_ifp) { | |
3020 | vty_out(vty, "%% no MLD state for interface %pSQq\n", ifname); | |
3021 | return CMD_WARNING; | |
3022 | } | |
3023 | ||
3024 | vty_out(vty, "querier: %pPA\n", &gm_ifp->querier); | |
3025 | vty_out(vty, "ll_lowest: %pPA\n\n", &pim_ifp->ll_lowest); | |
3026 | vty_out(vty, "t_query: %pTHD\n", gm_ifp->t_query); | |
3027 | vty_out(vty, "t_other_querier: %pTHD\n", gm_ifp->t_other_querier); | |
5e5034b0 DL |
3028 | vty_out(vty, "t_expire: %pTHD\n", gm_ifp->t_expire); |
3029 | ||
3030 | vty_out(vty, "\nn_pending: %u\n", gm_ifp->n_pending); | |
3031 | for (size_t i = 0; i < gm_ifp->n_pending; i++) { | |
3032 | int64_t query, expiry; | |
3033 | ||
3034 | query = monotime_since(&gm_ifp->pending[i].query, NULL); | |
3035 | expiry = monotime_until(&gm_ifp->pending[i].expiry, NULL); | |
3036 | ||
3037 | vty_out(vty, "[%zu]: query %"PRId64"ms ago, expiry in %"PRId64"ms\n", | |
3038 | i, query / 1000, expiry / 1000); | |
3039 | } | |
3040 | ||
3041 | struct gm_sg *sg; | |
3042 | struct gm_packet_state *pkt; | |
3043 | struct gm_packet_sg *item; | |
3044 | struct gm_subscriber *subscriber; | |
3045 | ||
3046 | vty_out(vty, "\n%zu S,G entries:\n", gm_sgs_count(gm_ifp->sgs)); | |
3047 | frr_each (gm_sgs, gm_ifp->sgs, sg) { | |
3048 | vty_out(vty, "\t%pSG t_expire=%pTHD\n", &sg->sgaddr, | |
3049 | sg->t_sg_expire); | |
3050 | ||
3051 | vty_out(vty, "\t @pos:%zu\n", | |
3052 | gm_packet_sg_subs_count(sg->subs_positive)); | |
3053 | frr_each (gm_packet_sg_subs, sg->subs_positive, item) { | |
3054 | pkt = gm_packet_sg2state(item); | |
3055 | ||
3056 | vty_out(vty, "\t\t+%s%s [%pPAs %p] %p+%u\n", | |
3057 | item->is_src ? "S" : "", | |
3058 | item->is_excl ? "E" : "", | |
3059 | &pkt->subscriber->addr, pkt->subscriber, pkt, | |
3060 | item->offset); | |
3061 | ||
3062 | assert(item->sg == sg); | |
3063 | } | |
3064 | vty_out(vty, "\t @neg:%zu\n", | |
3065 | gm_packet_sg_subs_count(sg->subs_negative)); | |
3066 | frr_each (gm_packet_sg_subs, sg->subs_negative, item) { | |
3067 | pkt = gm_packet_sg2state(item); | |
3068 | ||
3069 | vty_out(vty, "\t\t-%s%s [%pPAs %p] %p+%u\n", | |
3070 | item->is_src ? "S" : "", | |
3071 | item->is_excl ? "E" : "", | |
3072 | &pkt->subscriber->addr, pkt->subscriber, pkt, | |
3073 | item->offset); | |
3074 | ||
3075 | assert(item->sg == sg); | |
3076 | } | |
3077 | } | |
3078 | ||
3079 | vty_out(vty, "\n%zu subscribers:\n", | |
3080 | gm_subscribers_count(gm_ifp->subscribers)); | |
3081 | frr_each (gm_subscribers, gm_ifp->subscribers, subscriber) { | |
3082 | vty_out(vty, "\t%pPA %p %zu packets\n", &subscriber->addr, | |
3083 | subscriber, gm_packets_count(subscriber->packets)); | |
3084 | ||
3085 | frr_each (gm_packets, subscriber->packets, pkt) { | |
3086 | vty_out(vty, "\t\t%p %.3fs ago %u of %u items active\n", | |
3087 | pkt, | |
3088 | monotime_since(&pkt->received, NULL) * | |
3089 | 0.000001f, | |
3090 | pkt->n_active, pkt->n_sg); | |
3091 | ||
3092 | for (size_t i = 0; i < pkt->n_sg; i++) { | |
3093 | item = pkt->items + i; | |
3094 | ||
3095 | vty_out(vty, "\t\t[%zu]", i); | |
3096 | ||
3097 | if (!item->sg) { | |
3098 | vty_out(vty, " inactive\n"); | |
3099 | continue; | |
3100 | } | |
3101 | ||
3102 | vty_out(vty, " %s%s %pSG nE=%u\n", | |
3103 | item->is_src ? "S" : "", | |
3104 | item->is_excl ? "E" : "", | |
3105 | &item->sg->sgaddr, item->n_exclude); | |
3106 | } | |
3107 | } | |
3108 | } | |
3109 | ||
3110 | return CMD_SUCCESS; | |
3111 | } | |
3112 | ||
3113 | DEFPY(gm_debug_iface_cfg, | |
3114 | gm_debug_iface_cfg_cmd, | |
3115 | "debug ipv6 mld {" | |
3116 | "robustness (0-7)|" | |
3117 | "query-max-response-time (1-8387584)" | |
3118 | "}", | |
3119 | DEBUG_STR | |
3120 | IPV6_STR | |
3121 | "Multicast Listener Discovery\n" | |
3122 | "QRV\nQRV\n" | |
3123 | "maxresp\nmaxresp\n") | |
3124 | { | |
3125 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
3126 | struct pim_interface *pim_ifp; | |
3127 | struct gm_if *gm_ifp; | |
3128 | bool changed = false; | |
3129 | ||
3130 | pim_ifp = ifp->info; | |
3131 | if (!pim_ifp) { | |
3132 | vty_out(vty, "%% no PIM state for interface %pSQq\n", | |
3133 | ifp->name); | |
3134 | return CMD_WARNING; | |
3135 | } | |
3136 | gm_ifp = pim_ifp->mld; | |
3137 | if (!gm_ifp) { | |
3138 | vty_out(vty, "%% no MLD state for interface %pSQq\n", | |
3139 | ifp->name); | |
3140 | return CMD_WARNING; | |
3141 | } | |
3142 | ||
3143 | if (robustness_str && gm_ifp->cur_qrv != robustness) { | |
3144 | gm_ifp->cur_qrv = robustness; | |
3145 | changed = true; | |
3146 | } | |
3147 | if (query_max_response_time_str && | |
3148 | gm_ifp->cur_max_resp != (unsigned int)query_max_response_time) { | |
3149 | gm_ifp->cur_max_resp = query_max_response_time; | |
3150 | changed = true; | |
3151 | } | |
3152 | ||
3153 | if (changed) { | |
3154 | vty_out(vty, "%% MLD querier config changed, bumping\n"); | |
3155 | gm_bump_querier(gm_ifp); | |
3156 | } | |
3157 | return CMD_SUCCESS; | |
3158 | } | |
3159 | ||
3160 | void gm_cli_init(void); | |
3161 | ||
3162 | void gm_cli_init(void) | |
3163 | { | |
d2951219 DL |
3164 | install_element(VIEW_NODE, &gm_show_interface_cmd); |
3165 | install_element(VIEW_NODE, &gm_show_interface_stats_cmd); | |
3166 | install_element(VIEW_NODE, &gm_show_interface_joins_cmd); | |
cdc1b770 | 3167 | install_element(VIEW_NODE, &gm_show_mld_groups_cmd); |
d2951219 | 3168 | |
5e5034b0 DL |
3169 | install_element(VIEW_NODE, &gm_debug_show_cmd); |
3170 | install_element(INTERFACE_NODE, &gm_debug_iface_cfg_cmd); | |
3171 | } |