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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
5e5034b0 DL |
2 | /* |
3 | * PIMv6 MLD querier | |
4 | * Copyright (C) 2021-2022 David Lamparter for NetDEF, Inc. | |
5e5034b0 DL |
5 | */ |
6 | ||
7 | /* | |
8 | * keep pim6_mld.h open when working on this code. Most data structures are | |
9 | * commented in the header. | |
10 | * | |
11 | * IPv4 support is pre-planned but hasn't been tackled yet. It is intended | |
12 | * that this code will replace the old IGMP querier at some point. | |
13 | */ | |
14 | ||
15 | #include <zebra.h> | |
16 | #include <netinet/ip6.h> | |
17 | ||
18 | #include "lib/memory.h" | |
19 | #include "lib/jhash.h" | |
20 | #include "lib/prefix.h" | |
21 | #include "lib/checksum.h" | |
22 | #include "lib/thread.h" | |
cdc1b770 | 23 | #include "termtable.h" |
5e5034b0 DL |
24 | |
25 | #include "pimd/pim6_mld.h" | |
26 | #include "pimd/pim6_mld_protocol.h" | |
27 | #include "pimd/pim_memory.h" | |
28 | #include "pimd/pim_instance.h" | |
29 | #include "pimd/pim_iface.h" | |
cdc1b770 SG |
30 | #include "pimd/pim6_cmd.h" |
31 | #include "pimd/pim_cmd_common.h" | |
5e5034b0 DL |
32 | #include "pimd/pim_util.h" |
33 | #include "pimd/pim_tib.h" | |
34 | #include "pimd/pimd.h" | |
35 | ||
36 | #ifndef IPV6_MULTICAST_ALL | |
37 | #define IPV6_MULTICAST_ALL 29 | |
38 | #endif | |
39 | ||
40 | DEFINE_MTYPE_STATIC(PIMD, GM_IFACE, "MLD interface"); | |
41 | DEFINE_MTYPE_STATIC(PIMD, GM_PACKET, "MLD packet"); | |
42 | DEFINE_MTYPE_STATIC(PIMD, GM_SUBSCRIBER, "MLD subscriber"); | |
43 | DEFINE_MTYPE_STATIC(PIMD, GM_STATE, "MLD subscription state"); | |
44 | DEFINE_MTYPE_STATIC(PIMD, GM_SG, "MLD (S,G)"); | |
45 | DEFINE_MTYPE_STATIC(PIMD, GM_GRP_PENDING, "MLD group query state"); | |
46 | DEFINE_MTYPE_STATIC(PIMD, GM_GSQ_PENDING, "MLD group/source query aggregate"); | |
47 | ||
48 | static void gm_t_query(struct thread *t); | |
49 | static void gm_trigger_specific(struct gm_sg *sg); | |
50 | static void gm_sg_timer_start(struct gm_if *gm_ifp, struct gm_sg *sg, | |
51 | struct timeval expire_wait); | |
52 | ||
53 | /* shorthand for log messages */ | |
54 | #define log_ifp(msg) \ | |
55 | "[MLD %s:%s] " msg, gm_ifp->ifp->vrf->name, gm_ifp->ifp->name | |
56 | #define log_pkt_src(msg) \ | |
57 | "[MLD %s:%s %pI6] " msg, gm_ifp->ifp->vrf->name, gm_ifp->ifp->name, \ | |
58 | &pkt_src->sin6_addr | |
59 | #define log_sg(sg, msg) \ | |
60 | "[MLD %s:%s %pSG] " msg, sg->iface->ifp->vrf->name, \ | |
61 | sg->iface->ifp->name, &sg->sgaddr | |
62 | ||
63 | /* clang-format off */ | |
64 | #if PIM_IPV == 6 | |
65 | static const pim_addr gm_all_hosts = { | |
66 | .s6_addr = { | |
67 | 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
68 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, | |
69 | }, | |
70 | }; | |
71 | static const pim_addr gm_all_routers = { | |
72 | .s6_addr = { | |
73 | 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
74 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16, | |
75 | }, | |
76 | }; | |
77 | /* MLDv1 does not allow subscriber tracking due to report suppression | |
78 | * hence, the source address is replaced with ffff:...:ffff | |
79 | */ | |
80 | static const pim_addr gm_dummy_untracked = { | |
81 | .s6_addr = { | |
82 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
83 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
84 | }, | |
85 | }; | |
86 | #else | |
87 | /* 224.0.0.1 */ | |
88 | static const pim_addr gm_all_hosts = { .s_addr = htonl(0xe0000001), }; | |
89 | /* 224.0.0.22 */ | |
90 | static const pim_addr gm_all_routers = { .s_addr = htonl(0xe0000016), }; | |
91 | static const pim_addr gm_dummy_untracked = { .s_addr = 0xffffffff, }; | |
92 | #endif | |
93 | /* clang-format on */ | |
94 | ||
95 | #define IPV6_MULTICAST_SCOPE_LINK 2 | |
96 | ||
97 | static inline uint8_t in6_multicast_scope(const pim_addr *addr) | |
98 | { | |
99 | return addr->s6_addr[1] & 0xf; | |
100 | } | |
101 | ||
102 | static inline bool in6_multicast_nofwd(const pim_addr *addr) | |
103 | { | |
104 | return in6_multicast_scope(addr) <= IPV6_MULTICAST_SCOPE_LINK; | |
105 | } | |
106 | ||
107 | /* | |
108 | * (S,G) -> subscriber,(S,G) | |
109 | */ | |
110 | ||
111 | static int gm_packet_sg_cmp(const struct gm_packet_sg *a, | |
112 | const struct gm_packet_sg *b) | |
113 | { | |
114 | const struct gm_packet_state *s_a, *s_b; | |
115 | ||
116 | s_a = gm_packet_sg2state(a); | |
117 | s_b = gm_packet_sg2state(b); | |
118 | return IPV6_ADDR_CMP(&s_a->subscriber->addr, &s_b->subscriber->addr); | |
119 | } | |
120 | ||
121 | DECLARE_RBTREE_UNIQ(gm_packet_sg_subs, struct gm_packet_sg, subs_itm, | |
122 | gm_packet_sg_cmp); | |
123 | ||
124 | static struct gm_packet_sg *gm_packet_sg_find(struct gm_sg *sg, | |
125 | enum gm_sub_sense sense, | |
126 | struct gm_subscriber *sub) | |
127 | { | |
128 | struct { | |
129 | struct gm_packet_state hdr; | |
130 | struct gm_packet_sg item; | |
131 | } ref = { | |
132 | /* clang-format off */ | |
133 | .hdr = { | |
134 | .subscriber = sub, | |
135 | }, | |
136 | .item = { | |
137 | .offset = 0, | |
138 | }, | |
139 | /* clang-format on */ | |
140 | }; | |
141 | ||
142 | return gm_packet_sg_subs_find(&sg->subs[sense], &ref.item); | |
143 | } | |
144 | ||
145 | /* | |
146 | * interface -> (*,G),pending | |
147 | */ | |
148 | ||
149 | static int gm_grp_pending_cmp(const struct gm_grp_pending *a, | |
150 | const struct gm_grp_pending *b) | |
151 | { | |
152 | return IPV6_ADDR_CMP(&a->grp, &b->grp); | |
153 | } | |
154 | ||
155 | DECLARE_RBTREE_UNIQ(gm_grp_pends, struct gm_grp_pending, itm, | |
156 | gm_grp_pending_cmp); | |
157 | ||
158 | /* | |
159 | * interface -> ([S1,S2,...],G),pending | |
160 | */ | |
161 | ||
162 | static int gm_gsq_pending_cmp(const struct gm_gsq_pending *a, | |
163 | const struct gm_gsq_pending *b) | |
164 | { | |
165 | if (a->s_bit != b->s_bit) | |
166 | return numcmp(a->s_bit, b->s_bit); | |
167 | ||
168 | return IPV6_ADDR_CMP(&a->grp, &b->grp); | |
169 | } | |
170 | ||
171 | static uint32_t gm_gsq_pending_hash(const struct gm_gsq_pending *a) | |
172 | { | |
173 | uint32_t seed = a->s_bit ? 0x68f0eb5e : 0x156b7f19; | |
174 | ||
175 | return jhash(&a->grp, sizeof(a->grp), seed); | |
176 | } | |
177 | ||
178 | DECLARE_HASH(gm_gsq_pends, struct gm_gsq_pending, itm, gm_gsq_pending_cmp, | |
179 | gm_gsq_pending_hash); | |
180 | ||
181 | /* | |
182 | * interface -> (S,G) | |
183 | */ | |
184 | ||
185 | static int gm_sg_cmp(const struct gm_sg *a, const struct gm_sg *b) | |
186 | { | |
187 | return pim_sgaddr_cmp(a->sgaddr, b->sgaddr); | |
188 | } | |
189 | ||
190 | DECLARE_RBTREE_UNIQ(gm_sgs, struct gm_sg, itm, gm_sg_cmp); | |
191 | ||
192 | static struct gm_sg *gm_sg_find(struct gm_if *gm_ifp, pim_addr grp, | |
193 | pim_addr src) | |
194 | { | |
195 | struct gm_sg ref = {}; | |
196 | ||
197 | ref.sgaddr.grp = grp; | |
198 | ref.sgaddr.src = src; | |
199 | return gm_sgs_find(gm_ifp->sgs, &ref); | |
200 | } | |
201 | ||
202 | static struct gm_sg *gm_sg_make(struct gm_if *gm_ifp, pim_addr grp, | |
203 | pim_addr src) | |
204 | { | |
205 | struct gm_sg *ret, *prev; | |
206 | ||
207 | ret = XCALLOC(MTYPE_GM_SG, sizeof(*ret)); | |
208 | ret->sgaddr.grp = grp; | |
209 | ret->sgaddr.src = src; | |
210 | ret->iface = gm_ifp; | |
211 | prev = gm_sgs_add(gm_ifp->sgs, ret); | |
212 | ||
213 | if (prev) { | |
214 | XFREE(MTYPE_GM_SG, ret); | |
215 | ret = prev; | |
216 | } else { | |
aa2f9349 | 217 | monotime(&ret->created); |
5e5034b0 DL |
218 | gm_packet_sg_subs_init(ret->subs_positive); |
219 | gm_packet_sg_subs_init(ret->subs_negative); | |
220 | } | |
221 | return ret; | |
222 | } | |
223 | ||
224 | /* | |
225 | * interface -> packets, sorted by expiry (because add_tail insert order) | |
226 | */ | |
227 | ||
228 | DECLARE_DLIST(gm_packet_expires, struct gm_packet_state, exp_itm); | |
229 | ||
230 | /* | |
231 | * subscriber -> packets | |
232 | */ | |
233 | ||
234 | DECLARE_DLIST(gm_packets, struct gm_packet_state, pkt_itm); | |
235 | ||
236 | /* | |
237 | * interface -> subscriber | |
238 | */ | |
239 | ||
240 | static int gm_subscriber_cmp(const struct gm_subscriber *a, | |
241 | const struct gm_subscriber *b) | |
242 | { | |
243 | return IPV6_ADDR_CMP(&a->addr, &b->addr); | |
244 | } | |
245 | ||
246 | static uint32_t gm_subscriber_hash(const struct gm_subscriber *a) | |
247 | { | |
248 | return jhash(&a->addr, sizeof(a->addr), 0xd0e94ad4); | |
249 | } | |
250 | ||
251 | DECLARE_HASH(gm_subscribers, struct gm_subscriber, itm, gm_subscriber_cmp, | |
252 | gm_subscriber_hash); | |
253 | ||
254 | static struct gm_subscriber *gm_subscriber_findref(struct gm_if *gm_ifp, | |
255 | pim_addr addr) | |
256 | { | |
257 | struct gm_subscriber ref = {}, *ret; | |
258 | ||
259 | ref.addr = addr; | |
260 | ret = gm_subscribers_find(gm_ifp->subscribers, &ref); | |
261 | if (ret) | |
262 | ret->refcount++; | |
263 | return ret; | |
264 | } | |
265 | ||
266 | static struct gm_subscriber *gm_subscriber_get(struct gm_if *gm_ifp, | |
267 | pim_addr addr) | |
268 | { | |
269 | struct gm_subscriber ref = {}, *ret; | |
270 | ||
271 | ref.addr = addr; | |
272 | ret = gm_subscribers_find(gm_ifp->subscribers, &ref); | |
273 | ||
274 | if (!ret) { | |
275 | ret = XCALLOC(MTYPE_GM_SUBSCRIBER, sizeof(*ret)); | |
276 | ret->iface = gm_ifp; | |
277 | ret->addr = addr; | |
278 | ret->refcount = 1; | |
aa2f9349 | 279 | monotime(&ret->created); |
5e5034b0 DL |
280 | gm_packets_init(ret->packets); |
281 | ||
282 | gm_subscribers_add(gm_ifp->subscribers, ret); | |
283 | } | |
284 | return ret; | |
285 | } | |
286 | ||
287 | static void gm_subscriber_drop(struct gm_subscriber **subp) | |
288 | { | |
289 | struct gm_subscriber *sub = *subp; | |
290 | struct gm_if *gm_ifp; | |
291 | ||
292 | if (!sub) | |
293 | return; | |
294 | gm_ifp = sub->iface; | |
295 | ||
296 | *subp = NULL; | |
297 | sub->refcount--; | |
298 | ||
299 | if (sub->refcount) | |
300 | return; | |
301 | ||
302 | gm_subscribers_del(gm_ifp->subscribers, sub); | |
303 | XFREE(MTYPE_GM_SUBSCRIBER, sub); | |
304 | } | |
305 | ||
306 | /****************************************************************************/ | |
307 | ||
308 | /* bundle query timer values for combined v1/v2 handling */ | |
309 | struct gm_query_timers { | |
310 | unsigned int qrv; | |
311 | unsigned int max_resp_ms; | |
312 | unsigned int qqic_ms; | |
313 | ||
314 | struct timeval fuzz; | |
315 | struct timeval expire_wait; | |
316 | }; | |
317 | ||
318 | static void gm_expiry_calc(struct gm_query_timers *timers) | |
319 | { | |
320 | unsigned int expire = | |
321 | (timers->qrv - 1) * timers->qqic_ms + timers->max_resp_ms; | |
322 | ldiv_t exp_div = ldiv(expire, 1000); | |
323 | ||
324 | timers->expire_wait.tv_sec = exp_div.quot; | |
325 | timers->expire_wait.tv_usec = exp_div.rem * 1000; | |
326 | timeradd(&timers->expire_wait, &timers->fuzz, &timers->expire_wait); | |
327 | } | |
328 | ||
329 | static void gm_sg_free(struct gm_sg *sg) | |
330 | { | |
331 | /* t_sg_expiry is handled before this is reached */ | |
332 | THREAD_OFF(sg->t_sg_query); | |
333 | gm_packet_sg_subs_fini(sg->subs_negative); | |
334 | gm_packet_sg_subs_fini(sg->subs_positive); | |
335 | XFREE(MTYPE_GM_SG, sg); | |
336 | } | |
337 | ||
338 | /* clang-format off */ | |
339 | static const char *const gm_states[] = { | |
340 | [GM_SG_NOINFO] = "NOINFO", | |
341 | [GM_SG_JOIN] = "JOIN", | |
342 | [GM_SG_JOIN_EXPIRING] = "JOIN_EXPIRING", | |
343 | [GM_SG_PRUNE] = "PRUNE", | |
344 | [GM_SG_NOPRUNE] = "NOPRUNE", | |
345 | [GM_SG_NOPRUNE_EXPIRING] = "NOPRUNE_EXPIRING", | |
346 | }; | |
347 | /* clang-format on */ | |
348 | ||
349 | CPP_NOTICE("TODO: S,G entries in EXCLUDE (i.e. prune) unsupported"); | |
350 | /* tib_sg_gm_prune() below is an "un-join", it doesn't prune S,G when *,G is | |
351 | * joined. Whether we actually want/need to support this is a separate | |
352 | * question - it is almost never used. In fact this is exactly what RFC5790 | |
353 | * ("lightweight" MLDv2) does: it removes S,G EXCLUDE support. | |
354 | */ | |
355 | ||
356 | static void gm_sg_update(struct gm_sg *sg, bool has_expired) | |
357 | { | |
358 | struct gm_if *gm_ifp = sg->iface; | |
359 | enum gm_sg_state prev, desired; | |
360 | bool new_join; | |
361 | struct gm_sg *grp = NULL; | |
362 | ||
363 | if (!pim_addr_is_any(sg->sgaddr.src)) | |
364 | grp = gm_sg_find(gm_ifp, sg->sgaddr.grp, PIMADDR_ANY); | |
365 | else | |
366 | assert(sg->state != GM_SG_PRUNE); | |
367 | ||
368 | if (gm_packet_sg_subs_count(sg->subs_positive)) { | |
369 | desired = GM_SG_JOIN; | |
370 | assert(!sg->t_sg_expire); | |
371 | } else if ((sg->state == GM_SG_JOIN || | |
372 | sg->state == GM_SG_JOIN_EXPIRING) && | |
373 | !has_expired) | |
374 | desired = GM_SG_JOIN_EXPIRING; | |
375 | else if (!grp || !gm_packet_sg_subs_count(grp->subs_positive)) | |
376 | desired = GM_SG_NOINFO; | |
377 | else if (gm_packet_sg_subs_count(grp->subs_positive) == | |
378 | gm_packet_sg_subs_count(sg->subs_negative)) { | |
379 | if ((sg->state == GM_SG_NOPRUNE || | |
380 | sg->state == GM_SG_NOPRUNE_EXPIRING) && | |
381 | !has_expired) | |
382 | desired = GM_SG_NOPRUNE_EXPIRING; | |
383 | else | |
384 | desired = GM_SG_PRUNE; | |
385 | } else if (gm_packet_sg_subs_count(sg->subs_negative)) | |
386 | desired = GM_SG_NOPRUNE; | |
387 | else | |
388 | desired = GM_SG_NOINFO; | |
389 | ||
390 | if (desired != sg->state && !gm_ifp->stopping) { | |
95b13dc5 | 391 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
392 | zlog_debug(log_sg(sg, "%s => %s"), gm_states[sg->state], |
393 | gm_states[desired]); | |
394 | ||
395 | if (desired == GM_SG_JOIN_EXPIRING || | |
396 | desired == GM_SG_NOPRUNE_EXPIRING) { | |
397 | struct gm_query_timers timers; | |
398 | ||
399 | timers.qrv = gm_ifp->cur_qrv; | |
400 | timers.max_resp_ms = gm_ifp->cur_max_resp; | |
401 | timers.qqic_ms = gm_ifp->cur_query_intv_trig; | |
402 | timers.fuzz = gm_ifp->cfg_timing_fuzz; | |
403 | ||
404 | gm_expiry_calc(&timers); | |
405 | gm_sg_timer_start(gm_ifp, sg, timers.expire_wait); | |
406 | ||
407 | THREAD_OFF(sg->t_sg_query); | |
51b4991f | 408 | sg->n_query = gm_ifp->cur_lmqc; |
5e5034b0 DL |
409 | sg->query_sbit = false; |
410 | gm_trigger_specific(sg); | |
411 | } | |
412 | } | |
413 | prev = sg->state; | |
414 | sg->state = desired; | |
415 | ||
416 | if (in6_multicast_nofwd(&sg->sgaddr.grp) || gm_ifp->stopping) | |
417 | new_join = false; | |
418 | else | |
419 | new_join = gm_sg_state_want_join(desired); | |
420 | ||
421 | if (new_join && !sg->tib_joined) { | |
422 | /* this will retry if join previously failed */ | |
423 | sg->tib_joined = tib_sg_gm_join(gm_ifp->pim, sg->sgaddr, | |
424 | gm_ifp->ifp, &sg->oil); | |
425 | if (!sg->tib_joined) | |
426 | zlog_warn( | |
427 | "MLD join for %pSG%%%s not propagated into TIB", | |
428 | &sg->sgaddr, gm_ifp->ifp->name); | |
429 | else | |
430 | zlog_info(log_ifp("%pSG%%%s TIB joined"), &sg->sgaddr, | |
431 | gm_ifp->ifp->name); | |
432 | ||
433 | } else if (sg->tib_joined && !new_join) { | |
434 | tib_sg_gm_prune(gm_ifp->pim, sg->sgaddr, gm_ifp->ifp, &sg->oil); | |
435 | ||
436 | sg->oil = NULL; | |
437 | sg->tib_joined = false; | |
438 | } | |
439 | ||
440 | if (desired == GM_SG_NOINFO) { | |
f4ac0a1c DL |
441 | /* multiple paths can lead to the last state going away; |
442 | * t_sg_expire can still be running if we're arriving from | |
443 | * another path. | |
444 | */ | |
445 | if (has_expired) | |
446 | THREAD_OFF(sg->t_sg_expire); | |
447 | ||
5e5034b0 DL |
448 | assertf((!sg->t_sg_expire && |
449 | !gm_packet_sg_subs_count(sg->subs_positive) && | |
450 | !gm_packet_sg_subs_count(sg->subs_negative)), | |
451 | "%pSG%%%s hx=%u exp=%pTHD state=%s->%s pos=%zu neg=%zu grp=%p", | |
452 | &sg->sgaddr, gm_ifp->ifp->name, has_expired, | |
453 | sg->t_sg_expire, gm_states[prev], gm_states[desired], | |
454 | gm_packet_sg_subs_count(sg->subs_positive), | |
455 | gm_packet_sg_subs_count(sg->subs_negative), grp); | |
456 | ||
a96d64b0 | 457 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
458 | zlog_debug(log_sg(sg, "dropping")); |
459 | ||
460 | gm_sgs_del(gm_ifp->sgs, sg); | |
461 | gm_sg_free(sg); | |
462 | } | |
463 | } | |
464 | ||
465 | /****************************************************************************/ | |
466 | ||
467 | /* the following bunch of functions deals with transferring state from | |
468 | * received packets into gm_packet_state. As a reminder, the querier is | |
469 | * structured to keep all items received in one packet together, since they | |
470 | * will share expiry timers and thus allows efficient handling. | |
471 | */ | |
472 | ||
473 | static void gm_packet_free(struct gm_packet_state *pkt) | |
474 | { | |
475 | gm_packet_expires_del(pkt->iface->expires, pkt); | |
476 | gm_packets_del(pkt->subscriber->packets, pkt); | |
477 | gm_subscriber_drop(&pkt->subscriber); | |
478 | XFREE(MTYPE_GM_STATE, pkt); | |
479 | } | |
480 | ||
481 | static struct gm_packet_sg *gm_packet_sg_setup(struct gm_packet_state *pkt, | |
482 | struct gm_sg *sg, bool is_excl, | |
483 | bool is_src) | |
484 | { | |
485 | struct gm_packet_sg *item; | |
486 | ||
487 | assert(pkt->n_active < pkt->n_sg); | |
488 | ||
489 | item = &pkt->items[pkt->n_active]; | |
490 | item->sg = sg; | |
491 | item->is_excl = is_excl; | |
492 | item->is_src = is_src; | |
493 | item->offset = pkt->n_active; | |
494 | ||
495 | pkt->n_active++; | |
496 | return item; | |
497 | } | |
498 | ||
499 | static bool gm_packet_sg_drop(struct gm_packet_sg *item) | |
500 | { | |
501 | struct gm_packet_state *pkt; | |
502 | size_t i; | |
503 | ||
504 | assert(item->sg); | |
505 | ||
506 | pkt = gm_packet_sg2state(item); | |
507 | if (item->sg->most_recent == item) | |
508 | item->sg->most_recent = NULL; | |
509 | ||
510 | for (i = 0; i < item->n_exclude; i++) { | |
511 | struct gm_packet_sg *excl_item; | |
512 | ||
513 | excl_item = item + 1 + i; | |
514 | if (!excl_item->sg) | |
515 | continue; | |
516 | ||
517 | gm_packet_sg_subs_del(excl_item->sg->subs_negative, excl_item); | |
518 | excl_item->sg = NULL; | |
519 | pkt->n_active--; | |
520 | ||
521 | assert(pkt->n_active > 0); | |
522 | } | |
523 | ||
524 | if (item->is_excl && item->is_src) | |
525 | gm_packet_sg_subs_del(item->sg->subs_negative, item); | |
526 | else | |
527 | gm_packet_sg_subs_del(item->sg->subs_positive, item); | |
528 | item->sg = NULL; | |
529 | pkt->n_active--; | |
530 | ||
531 | if (!pkt->n_active) { | |
532 | gm_packet_free(pkt); | |
533 | return true; | |
534 | } | |
535 | return false; | |
536 | } | |
537 | ||
538 | static void gm_packet_drop(struct gm_packet_state *pkt, bool trace) | |
539 | { | |
540 | for (size_t i = 0; i < pkt->n_sg; i++) { | |
541 | struct gm_sg *sg = pkt->items[i].sg; | |
542 | bool deleted; | |
543 | ||
544 | if (!sg) | |
545 | continue; | |
546 | ||
a96d64b0 | 547 | if (trace && PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
548 | zlog_debug(log_sg(sg, "general-dropping from %pPA"), |
549 | &pkt->subscriber->addr); | |
550 | deleted = gm_packet_sg_drop(&pkt->items[i]); | |
551 | ||
552 | gm_sg_update(sg, true); | |
553 | if (deleted) | |
554 | break; | |
555 | } | |
556 | } | |
557 | ||
558 | static void gm_packet_sg_remove_sources(struct gm_if *gm_ifp, | |
559 | struct gm_subscriber *subscriber, | |
560 | pim_addr grp, pim_addr *srcs, | |
561 | size_t n_src, enum gm_sub_sense sense) | |
562 | { | |
563 | struct gm_sg *sg; | |
564 | struct gm_packet_sg *old_src; | |
565 | size_t i; | |
566 | ||
567 | for (i = 0; i < n_src; i++) { | |
568 | sg = gm_sg_find(gm_ifp, grp, srcs[i]); | |
569 | if (!sg) | |
570 | continue; | |
571 | ||
572 | old_src = gm_packet_sg_find(sg, sense, subscriber); | |
573 | if (!old_src) | |
574 | continue; | |
575 | ||
576 | gm_packet_sg_drop(old_src); | |
577 | gm_sg_update(sg, false); | |
578 | } | |
579 | } | |
580 | ||
581 | static void gm_sg_expiry_cancel(struct gm_sg *sg) | |
582 | { | |
a96d64b0 | 583 | if (sg->t_sg_expire && PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
584 | zlog_debug(log_sg(sg, "alive, cancelling expiry timer")); |
585 | THREAD_OFF(sg->t_sg_expire); | |
586 | sg->query_sbit = true; | |
587 | } | |
588 | ||
589 | /* first pass: process all changes resulting in removal of state: | |
590 | * - {TO,IS}_INCLUDE removes *,G EXCLUDE state (and S,G) | |
591 | * - ALLOW_NEW_SOURCES, if *,G in EXCLUDE removes S,G state | |
592 | * - BLOCK_OLD_SOURCES, if *,G in INCLUDE removes S,G state | |
593 | * - {TO,IS}_EXCLUDE, if *,G in INCLUDE removes S,G state | |
594 | * note *replacing* state is NOT considered *removing* state here | |
595 | * | |
596 | * everything else is thrown into pkt for creation of state in pass 2 | |
597 | */ | |
598 | static void gm_handle_v2_pass1(struct gm_packet_state *pkt, | |
599 | struct mld_v2_rec_hdr *rechdr) | |
600 | { | |
601 | /* NB: pkt->subscriber can be NULL here if the subscriber was not | |
602 | * previously seen! | |
603 | */ | |
604 | struct gm_subscriber *subscriber = pkt->subscriber; | |
605 | struct gm_sg *grp; | |
606 | struct gm_packet_sg *old_grp = NULL; | |
607 | struct gm_packet_sg *item; | |
608 | size_t n_src = ntohs(rechdr->n_src); | |
609 | size_t j; | |
610 | bool is_excl = false; | |
611 | ||
612 | grp = gm_sg_find(pkt->iface, rechdr->grp, PIMADDR_ANY); | |
613 | if (grp && subscriber) | |
614 | old_grp = gm_packet_sg_find(grp, GM_SUB_POS, subscriber); | |
615 | ||
616 | assert(old_grp == NULL || old_grp->is_excl); | |
617 | ||
618 | switch (rechdr->type) { | |
619 | case MLD_RECTYPE_IS_EXCLUDE: | |
620 | case MLD_RECTYPE_CHANGE_TO_EXCLUDE: | |
621 | /* this always replaces or creates state */ | |
622 | is_excl = true; | |
623 | if (!grp) | |
624 | grp = gm_sg_make(pkt->iface, rechdr->grp, PIMADDR_ANY); | |
625 | ||
626 | item = gm_packet_sg_setup(pkt, grp, is_excl, false); | |
627 | item->n_exclude = n_src; | |
628 | ||
629 | /* [EXCL_INCL_SG_NOTE] referenced below | |
630 | * | |
631 | * in theory, we should drop any S,G that the host may have | |
632 | * previously added in INCLUDE mode. In practice, this is both | |
633 | * incredibly rare and entirely irrelevant. It only makes any | |
634 | * difference if an S,G that the host previously had on the | |
635 | * INCLUDE list is now on the blocked list for EXCLUDE, which | |
636 | * we can cover in processing the S,G list in pass2_excl(). | |
637 | * | |
638 | * Other S,G from the host are simply left to expire | |
639 | * "naturally" through general expiry. | |
640 | */ | |
641 | break; | |
642 | ||
643 | case MLD_RECTYPE_IS_INCLUDE: | |
644 | case MLD_RECTYPE_CHANGE_TO_INCLUDE: | |
645 | if (old_grp) { | |
646 | /* INCLUDE has no *,G state, so old_grp here refers to | |
647 | * previous EXCLUDE => delete it | |
648 | */ | |
649 | gm_packet_sg_drop(old_grp); | |
650 | gm_sg_update(grp, false); | |
651 | CPP_NOTICE("need S,G PRUNE => NO_INFO transition here"); | |
652 | } | |
653 | break; | |
654 | ||
655 | case MLD_RECTYPE_ALLOW_NEW_SOURCES: | |
656 | if (old_grp) { | |
657 | /* remove S,Gs from EXCLUDE, and then we're done */ | |
658 | gm_packet_sg_remove_sources(pkt->iface, subscriber, | |
659 | rechdr->grp, rechdr->srcs, | |
660 | n_src, GM_SUB_NEG); | |
661 | return; | |
662 | } | |
663 | /* in INCLUDE mode => ALLOW_NEW_SOURCES is functionally | |
664 | * idential to IS_INCLUDE (because the list of sources in | |
665 | * IS_INCLUDE is not exhaustive) | |
666 | */ | |
667 | break; | |
668 | ||
669 | case MLD_RECTYPE_BLOCK_OLD_SOURCES: | |
670 | if (old_grp) { | |
671 | /* this is intentionally not implemented because it | |
672 | * would be complicated as hell. we only take the list | |
673 | * of blocked sources from full group state records | |
674 | */ | |
675 | return; | |
676 | } | |
677 | ||
678 | if (subscriber) | |
679 | gm_packet_sg_remove_sources(pkt->iface, subscriber, | |
680 | rechdr->grp, rechdr->srcs, | |
681 | n_src, GM_SUB_POS); | |
682 | return; | |
683 | } | |
684 | ||
685 | for (j = 0; j < n_src; j++) { | |
686 | struct gm_sg *sg; | |
687 | ||
688 | sg = gm_sg_find(pkt->iface, rechdr->grp, rechdr->srcs[j]); | |
689 | if (!sg) | |
690 | sg = gm_sg_make(pkt->iface, rechdr->grp, | |
691 | rechdr->srcs[j]); | |
692 | ||
693 | gm_packet_sg_setup(pkt, sg, is_excl, true); | |
694 | } | |
695 | } | |
696 | ||
697 | /* second pass: creating/updating/refreshing state. All the items from the | |
698 | * received packet have already been thrown into gm_packet_state. | |
699 | */ | |
700 | ||
701 | static void gm_handle_v2_pass2_incl(struct gm_packet_state *pkt, size_t i) | |
702 | { | |
703 | struct gm_packet_sg *item = &pkt->items[i]; | |
704 | struct gm_packet_sg *old = NULL; | |
705 | struct gm_sg *sg = item->sg; | |
706 | ||
707 | /* EXCLUDE state was already dropped in pass1 */ | |
708 | assert(!gm_packet_sg_find(sg, GM_SUB_NEG, pkt->subscriber)); | |
709 | ||
710 | old = gm_packet_sg_find(sg, GM_SUB_POS, pkt->subscriber); | |
711 | if (old) | |
712 | gm_packet_sg_drop(old); | |
713 | ||
714 | pkt->n_active++; | |
715 | gm_packet_sg_subs_add(sg->subs_positive, item); | |
716 | ||
717 | sg->most_recent = item; | |
718 | gm_sg_expiry_cancel(sg); | |
719 | gm_sg_update(sg, false); | |
720 | } | |
721 | ||
722 | static void gm_handle_v2_pass2_excl(struct gm_packet_state *pkt, size_t offs) | |
723 | { | |
724 | struct gm_packet_sg *item = &pkt->items[offs]; | |
725 | struct gm_packet_sg *old_grp, *item_dup; | |
726 | struct gm_sg *sg_grp = item->sg; | |
727 | size_t i; | |
728 | ||
729 | old_grp = gm_packet_sg_find(sg_grp, GM_SUB_POS, pkt->subscriber); | |
730 | if (old_grp) { | |
731 | for (i = 0; i < item->n_exclude; i++) { | |
732 | struct gm_packet_sg *item_src, *old_src; | |
733 | ||
734 | item_src = &pkt->items[offs + 1 + i]; | |
735 | old_src = gm_packet_sg_find(item_src->sg, GM_SUB_NEG, | |
736 | pkt->subscriber); | |
737 | if (old_src) | |
738 | gm_packet_sg_drop(old_src); | |
739 | ||
740 | /* See [EXCL_INCL_SG_NOTE] above - we can have old S,G | |
741 | * items left over if the host previously had INCLUDE | |
742 | * mode going. Remove them here if we find any. | |
743 | */ | |
744 | old_src = gm_packet_sg_find(item_src->sg, GM_SUB_POS, | |
745 | pkt->subscriber); | |
746 | if (old_src) | |
747 | gm_packet_sg_drop(old_src); | |
748 | } | |
749 | ||
750 | /* the previous loop has removed the S,G entries which are | |
751 | * still excluded after this update. So anything left on the | |
752 | * old item was previously excluded but is now included | |
753 | * => need to trigger update on S,G | |
754 | */ | |
755 | for (i = 0; i < old_grp->n_exclude; i++) { | |
756 | struct gm_packet_sg *old_src; | |
757 | struct gm_sg *old_sg_src; | |
758 | ||
759 | old_src = old_grp + 1 + i; | |
760 | old_sg_src = old_src->sg; | |
761 | if (!old_sg_src) | |
762 | continue; | |
763 | ||
764 | gm_packet_sg_drop(old_src); | |
765 | gm_sg_update(old_sg_src, false); | |
766 | } | |
767 | ||
768 | gm_packet_sg_drop(old_grp); | |
769 | } | |
770 | ||
771 | item_dup = gm_packet_sg_subs_add(sg_grp->subs_positive, item); | |
772 | assert(!item_dup); | |
773 | pkt->n_active++; | |
774 | ||
775 | sg_grp->most_recent = item; | |
776 | gm_sg_expiry_cancel(sg_grp); | |
777 | ||
778 | for (i = 0; i < item->n_exclude; i++) { | |
779 | struct gm_packet_sg *item_src; | |
780 | ||
781 | item_src = &pkt->items[offs + 1 + i]; | |
782 | item_dup = gm_packet_sg_subs_add(item_src->sg->subs_negative, | |
783 | item_src); | |
784 | ||
785 | if (item_dup) | |
786 | item_src->sg = NULL; | |
787 | else { | |
788 | pkt->n_active++; | |
789 | gm_sg_update(item_src->sg, false); | |
790 | } | |
791 | } | |
792 | ||
793 | /* TODO: determine best ordering between gm_sg_update(S,G) and (*,G) | |
794 | * to get lower PIM churn/flapping | |
795 | */ | |
796 | gm_sg_update(sg_grp, false); | |
797 | } | |
798 | ||
799 | CPP_NOTICE("TODO: QRV/QQIC are not copied from queries to local state"); | |
800 | /* on receiving a query, we need to update our robustness/query interval to | |
801 | * match, so we correctly process group/source specific queries after last | |
802 | * member leaves | |
803 | */ | |
804 | ||
805 | static void gm_handle_v2_report(struct gm_if *gm_ifp, | |
806 | const struct sockaddr_in6 *pkt_src, char *data, | |
807 | size_t len) | |
808 | { | |
809 | struct mld_v2_report_hdr *hdr; | |
810 | size_t i, n_records, max_entries; | |
811 | struct gm_packet_state *pkt; | |
812 | ||
813 | if (len < sizeof(*hdr)) { | |
55eb347d | 814 | if (PIM_DEBUG_GM_PACKETS) |
5e5034b0 DL |
815 | zlog_debug(log_pkt_src( |
816 | "malformed MLDv2 report (truncated header)")); | |
aa2f9349 | 817 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
818 | return; |
819 | } | |
820 | ||
aa2f9349 DL |
821 | /* errors after this may at least partially process the packet */ |
822 | gm_ifp->stats.rx_new_report++; | |
823 | ||
5e5034b0 DL |
824 | hdr = (struct mld_v2_report_hdr *)data; |
825 | data += sizeof(*hdr); | |
826 | len -= sizeof(*hdr); | |
827 | ||
828 | /* can't have more *,G and S,G items than there is space for ipv6 | |
829 | * addresses, so just use this to allocate temporary buffer | |
830 | */ | |
831 | max_entries = len / sizeof(pim_addr); | |
832 | pkt = XCALLOC(MTYPE_GM_STATE, | |
833 | offsetof(struct gm_packet_state, items[max_entries])); | |
834 | pkt->n_sg = max_entries; | |
835 | pkt->iface = gm_ifp; | |
836 | pkt->subscriber = gm_subscriber_findref(gm_ifp, pkt_src->sin6_addr); | |
837 | ||
838 | n_records = ntohs(hdr->n_records); | |
839 | ||
840 | /* validate & remove state in v2_pass1() */ | |
841 | for (i = 0; i < n_records; i++) { | |
842 | struct mld_v2_rec_hdr *rechdr; | |
843 | size_t n_src, record_size; | |
844 | ||
845 | if (len < sizeof(*rechdr)) { | |
846 | zlog_warn(log_pkt_src( | |
847 | "malformed MLDv2 report (truncated record header)")); | |
aa2f9349 | 848 | gm_ifp->stats.rx_trunc_report++; |
5e5034b0 DL |
849 | break; |
850 | } | |
851 | ||
852 | rechdr = (struct mld_v2_rec_hdr *)data; | |
853 | data += sizeof(*rechdr); | |
854 | len -= sizeof(*rechdr); | |
855 | ||
856 | n_src = ntohs(rechdr->n_src); | |
857 | record_size = n_src * sizeof(pim_addr) + rechdr->aux_len * 4; | |
858 | ||
859 | if (len < record_size) { | |
860 | zlog_warn(log_pkt_src( | |
861 | "malformed MLDv2 report (truncated source list)")); | |
aa2f9349 | 862 | gm_ifp->stats.rx_trunc_report++; |
5e5034b0 DL |
863 | break; |
864 | } | |
865 | if (!IN6_IS_ADDR_MULTICAST(&rechdr->grp)) { | |
866 | zlog_warn( | |
867 | log_pkt_src( | |
868 | "malformed MLDv2 report (invalid group %pI6)"), | |
869 | &rechdr->grp); | |
aa2f9349 | 870 | gm_ifp->stats.rx_trunc_report++; |
5e5034b0 DL |
871 | break; |
872 | } | |
873 | ||
874 | data += record_size; | |
875 | len -= record_size; | |
876 | ||
877 | gm_handle_v2_pass1(pkt, rechdr); | |
878 | } | |
879 | ||
880 | if (!pkt->n_active) { | |
881 | gm_subscriber_drop(&pkt->subscriber); | |
882 | XFREE(MTYPE_GM_STATE, pkt); | |
883 | return; | |
884 | } | |
885 | ||
886 | pkt = XREALLOC(MTYPE_GM_STATE, pkt, | |
887 | offsetof(struct gm_packet_state, items[pkt->n_active])); | |
888 | pkt->n_sg = pkt->n_active; | |
889 | pkt->n_active = 0; | |
890 | ||
891 | monotime(&pkt->received); | |
892 | if (!pkt->subscriber) | |
893 | pkt->subscriber = gm_subscriber_get(gm_ifp, pkt_src->sin6_addr); | |
894 | gm_packets_add_tail(pkt->subscriber->packets, pkt); | |
895 | gm_packet_expires_add_tail(gm_ifp->expires, pkt); | |
896 | ||
897 | for (i = 0; i < pkt->n_sg; i++) | |
898 | if (!pkt->items[i].is_excl) | |
899 | gm_handle_v2_pass2_incl(pkt, i); | |
900 | else { | |
901 | gm_handle_v2_pass2_excl(pkt, i); | |
902 | i += pkt->items[i].n_exclude; | |
903 | } | |
904 | ||
905 | if (pkt->n_active == 0) | |
906 | gm_packet_free(pkt); | |
907 | } | |
908 | ||
909 | static void gm_handle_v1_report(struct gm_if *gm_ifp, | |
910 | const struct sockaddr_in6 *pkt_src, char *data, | |
911 | size_t len) | |
912 | { | |
913 | struct mld_v1_pkt *hdr; | |
914 | struct gm_packet_state *pkt; | |
915 | struct gm_sg *grp; | |
916 | struct gm_packet_sg *item; | |
917 | size_t max_entries; | |
918 | ||
919 | if (len < sizeof(*hdr)) { | |
55eb347d | 920 | if (PIM_DEBUG_GM_PACKETS) |
5e5034b0 DL |
921 | zlog_debug(log_pkt_src( |
922 | "malformed MLDv1 report (truncated)")); | |
aa2f9349 | 923 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
924 | return; |
925 | } | |
926 | ||
aa2f9349 DL |
927 | gm_ifp->stats.rx_old_report++; |
928 | ||
5e5034b0 DL |
929 | hdr = (struct mld_v1_pkt *)data; |
930 | ||
931 | max_entries = 1; | |
932 | pkt = XCALLOC(MTYPE_GM_STATE, | |
933 | offsetof(struct gm_packet_state, items[max_entries])); | |
934 | pkt->n_sg = max_entries; | |
935 | pkt->iface = gm_ifp; | |
936 | pkt->subscriber = gm_subscriber_findref(gm_ifp, gm_dummy_untracked); | |
937 | ||
938 | /* { equivalent of gm_handle_v2_pass1() with IS_EXCLUDE */ | |
939 | ||
940 | grp = gm_sg_find(pkt->iface, hdr->grp, PIMADDR_ANY); | |
941 | if (!grp) | |
942 | grp = gm_sg_make(pkt->iface, hdr->grp, PIMADDR_ANY); | |
943 | ||
944 | item = gm_packet_sg_setup(pkt, grp, true, false); | |
945 | item->n_exclude = 0; | |
946 | CPP_NOTICE("set v1-seen timer on grp here"); | |
947 | ||
948 | /* } */ | |
949 | ||
950 | /* pass2 will count n_active back up to 1. Also since a v1 report | |
951 | * has exactly 1 group, we can skip the realloc() that v2 needs here. | |
952 | */ | |
953 | assert(pkt->n_active == 1); | |
954 | pkt->n_sg = pkt->n_active; | |
955 | pkt->n_active = 0; | |
956 | ||
957 | monotime(&pkt->received); | |
958 | if (!pkt->subscriber) | |
959 | pkt->subscriber = gm_subscriber_get(gm_ifp, gm_dummy_untracked); | |
960 | gm_packets_add_tail(pkt->subscriber->packets, pkt); | |
961 | gm_packet_expires_add_tail(gm_ifp->expires, pkt); | |
962 | ||
963 | /* pass2 covers installing state & removing old state; all the v1 | |
964 | * compat is handled at this point. | |
965 | * | |
966 | * Note that "old state" may be v2; subscribers will switch from v2 | |
967 | * reports to v1 reports when the querier changes from v2 to v1. So, | |
968 | * limiting this to v1 would be wrong. | |
969 | */ | |
970 | gm_handle_v2_pass2_excl(pkt, 0); | |
971 | ||
972 | if (pkt->n_active == 0) | |
973 | gm_packet_free(pkt); | |
974 | } | |
975 | ||
976 | static void gm_handle_v1_leave(struct gm_if *gm_ifp, | |
977 | const struct sockaddr_in6 *pkt_src, char *data, | |
978 | size_t len) | |
979 | { | |
980 | struct mld_v1_pkt *hdr; | |
981 | struct gm_subscriber *subscriber; | |
982 | struct gm_sg *grp; | |
983 | struct gm_packet_sg *old_grp; | |
984 | ||
985 | if (len < sizeof(*hdr)) { | |
55eb347d | 986 | if (PIM_DEBUG_GM_PACKETS) |
5e5034b0 DL |
987 | zlog_debug(log_pkt_src( |
988 | "malformed MLDv1 leave (truncated)")); | |
aa2f9349 | 989 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
990 | return; |
991 | } | |
992 | ||
aa2f9349 DL |
993 | gm_ifp->stats.rx_old_leave++; |
994 | ||
5e5034b0 DL |
995 | hdr = (struct mld_v1_pkt *)data; |
996 | ||
997 | subscriber = gm_subscriber_findref(gm_ifp, gm_dummy_untracked); | |
998 | if (!subscriber) | |
999 | return; | |
1000 | ||
1001 | /* { equivalent of gm_handle_v2_pass1() with IS_INCLUDE */ | |
1002 | ||
1003 | grp = gm_sg_find(gm_ifp, hdr->grp, PIMADDR_ANY); | |
1004 | if (grp) { | |
1005 | old_grp = gm_packet_sg_find(grp, GM_SUB_POS, subscriber); | |
1006 | if (old_grp) { | |
1007 | gm_packet_sg_drop(old_grp); | |
1008 | gm_sg_update(grp, false); | |
1009 | CPP_NOTICE("need S,G PRUNE => NO_INFO transition here"); | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | /* } */ | |
1014 | ||
1015 | /* nothing more to do here, pass2 is no-op for leaves */ | |
1016 | gm_subscriber_drop(&subscriber); | |
1017 | } | |
1018 | ||
1019 | /* for each general query received (or sent), a timer is started to expire | |
1020 | * _everything_ at the appropriate time (including robustness multiplier). | |
1021 | * | |
1022 | * So when this timer hits, all packets - with all of their items - that were | |
1023 | * received *before* the query are aged out, and state updated accordingly. | |
1024 | * Note that when we receive a refresh/update, the previous/old packet is | |
1025 | * already dropped and replaced with a new one, so in normal steady-state | |
1026 | * operation, this timer won't be doing anything. | |
1027 | * | |
1028 | * Additionally, if a subscriber actively leaves a group, that goes through | |
1029 | * its own path too and won't hit this. This is really only triggered when a | |
1030 | * host straight up disappears. | |
1031 | */ | |
1032 | static void gm_t_expire(struct thread *t) | |
1033 | { | |
1034 | struct gm_if *gm_ifp = THREAD_ARG(t); | |
1035 | struct gm_packet_state *pkt; | |
1036 | ||
1037 | zlog_info(log_ifp("general expiry timer")); | |
1038 | ||
1039 | while (gm_ifp->n_pending) { | |
1040 | struct gm_general_pending *pend = gm_ifp->pending; | |
1041 | struct timeval remain; | |
1042 | int64_t remain_ms; | |
1043 | ||
1044 | remain_ms = monotime_until(&pend->expiry, &remain); | |
1045 | if (remain_ms > 0) { | |
95b13dc5 | 1046 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
1047 | zlog_debug( |
1048 | log_ifp("next general expiry in %" PRId64 "ms"), | |
1049 | remain_ms / 1000); | |
1050 | ||
1051 | thread_add_timer_tv(router->master, gm_t_expire, gm_ifp, | |
1052 | &remain, &gm_ifp->t_expire); | |
1053 | return; | |
1054 | } | |
1055 | ||
1056 | while ((pkt = gm_packet_expires_first(gm_ifp->expires))) { | |
1057 | if (timercmp(&pkt->received, &pend->query, >=)) | |
1058 | break; | |
1059 | ||
55eb347d | 1060 | if (PIM_DEBUG_GM_PACKETS) |
5e5034b0 DL |
1061 | zlog_debug(log_ifp("expire packet %p"), pkt); |
1062 | gm_packet_drop(pkt, true); | |
1063 | } | |
1064 | ||
1065 | gm_ifp->n_pending--; | |
1066 | memmove(gm_ifp->pending, gm_ifp->pending + 1, | |
1067 | gm_ifp->n_pending * sizeof(gm_ifp->pending[0])); | |
1068 | } | |
1069 | ||
95b13dc5 | 1070 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
1071 | zlog_debug(log_ifp("next general expiry waiting for query")); |
1072 | } | |
1073 | ||
1074 | /* NB: the receive handlers will also run when sending packets, since we | |
1075 | * receive our own packets back in. | |
1076 | */ | |
1077 | static void gm_handle_q_general(struct gm_if *gm_ifp, | |
1078 | struct gm_query_timers *timers) | |
1079 | { | |
1080 | struct timeval now, expiry; | |
1081 | struct gm_general_pending *pend; | |
1082 | ||
1083 | monotime(&now); | |
1084 | timeradd(&now, &timers->expire_wait, &expiry); | |
1085 | ||
1086 | while (gm_ifp->n_pending) { | |
1087 | pend = &gm_ifp->pending[gm_ifp->n_pending - 1]; | |
1088 | ||
1089 | if (timercmp(&pend->expiry, &expiry, <)) | |
1090 | break; | |
1091 | ||
1092 | /* if we end up here, the last item in pending[] has an expiry | |
1093 | * later than the expiry for this query. But our query time | |
1094 | * (now) is later than that of the item (because, well, that's | |
1095 | * how time works.) This makes this query meaningless since | |
1096 | * it's "supersetted" within the preexisting query | |
1097 | */ | |
1098 | ||
a96d64b0 | 1099 | if (PIM_DEBUG_GM_TRACE_DETAIL) |
5e5034b0 DL |
1100 | zlog_debug( |
1101 | log_ifp("zapping supersetted general timer %pTVMu"), | |
1102 | &pend->expiry); | |
1103 | ||
1104 | gm_ifp->n_pending--; | |
1105 | if (!gm_ifp->n_pending) | |
1106 | THREAD_OFF(gm_ifp->t_expire); | |
1107 | } | |
1108 | ||
1109 | /* people might be messing with their configs or something */ | |
1110 | if (gm_ifp->n_pending == array_size(gm_ifp->pending)) | |
1111 | return; | |
1112 | ||
1113 | pend = &gm_ifp->pending[gm_ifp->n_pending]; | |
1114 | pend->query = now; | |
1115 | pend->expiry = expiry; | |
1116 | ||
1117 | if (!gm_ifp->n_pending++) { | |
a96d64b0 | 1118 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1119 | zlog_debug( |
1120 | log_ifp("starting general timer @ 0: %pTVMu"), | |
1121 | &pend->expiry); | |
1122 | thread_add_timer_tv(router->master, gm_t_expire, gm_ifp, | |
1123 | &timers->expire_wait, &gm_ifp->t_expire); | |
a96d64b0 | 1124 | } else if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1125 | zlog_debug(log_ifp("appending general timer @ %u: %pTVMu"), |
1126 | gm_ifp->n_pending, &pend->expiry); | |
1127 | } | |
1128 | ||
1129 | static void gm_t_sg_expire(struct thread *t) | |
1130 | { | |
1131 | struct gm_sg *sg = THREAD_ARG(t); | |
1132 | struct gm_if *gm_ifp = sg->iface; | |
1133 | struct gm_packet_sg *item; | |
1134 | ||
1135 | assertf(sg->state == GM_SG_JOIN_EXPIRING || | |
1136 | sg->state == GM_SG_NOPRUNE_EXPIRING, | |
1137 | "%pSG%%%s %pTHD", &sg->sgaddr, gm_ifp->ifp->name, t); | |
1138 | ||
1139 | frr_each_safe (gm_packet_sg_subs, sg->subs_positive, item) | |
1140 | /* this will also drop EXCLUDE mode S,G lists together with | |
1141 | * the *,G entry | |
1142 | */ | |
1143 | gm_packet_sg_drop(item); | |
1144 | ||
1145 | /* subs_negative items are only timed out together with the *,G entry | |
1146 | * since we won't get any reports for a group-and-source query | |
1147 | */ | |
1148 | gm_sg_update(sg, true); | |
1149 | } | |
1150 | ||
1151 | static bool gm_sg_check_recent(struct gm_if *gm_ifp, struct gm_sg *sg, | |
1152 | struct timeval ref) | |
1153 | { | |
1154 | struct gm_packet_state *pkt; | |
1155 | ||
1156 | if (!sg->most_recent) { | |
1157 | struct gm_packet_state *best_pkt = NULL; | |
1158 | struct gm_packet_sg *item; | |
1159 | ||
1160 | frr_each (gm_packet_sg_subs, sg->subs_positive, item) { | |
1161 | pkt = gm_packet_sg2state(item); | |
1162 | ||
1163 | if (!best_pkt || | |
1164 | timercmp(&pkt->received, &best_pkt->received, >)) { | |
1165 | best_pkt = pkt; | |
1166 | sg->most_recent = item; | |
1167 | } | |
1168 | } | |
1169 | } | |
1170 | if (sg->most_recent) { | |
1171 | struct timeval fuzz; | |
1172 | ||
1173 | pkt = gm_packet_sg2state(sg->most_recent); | |
1174 | ||
1175 | /* this shouldn't happen on plain old real ethernet segment, | |
1176 | * but on something like a VXLAN or VPLS it is very possible | |
1177 | * that we get a report before the query that triggered it. | |
1178 | * (imagine a triangle scenario with 3 datacenters, it's very | |
1179 | * possible A->B + B->C is faster than A->C due to odd routing) | |
1180 | * | |
1181 | * This makes a little tolerance allowance to handle that case. | |
1182 | */ | |
1183 | timeradd(&pkt->received, &gm_ifp->cfg_timing_fuzz, &fuzz); | |
1184 | ||
1185 | if (timercmp(&fuzz, &ref, >)) | |
1186 | return true; | |
1187 | } | |
1188 | return false; | |
1189 | } | |
1190 | ||
1191 | static void gm_sg_timer_start(struct gm_if *gm_ifp, struct gm_sg *sg, | |
1192 | struct timeval expire_wait) | |
1193 | { | |
1194 | struct timeval now; | |
1195 | ||
1196 | if (!sg) | |
1197 | return; | |
1198 | if (sg->state == GM_SG_PRUNE) | |
1199 | return; | |
1200 | ||
1201 | monotime(&now); | |
1202 | if (gm_sg_check_recent(gm_ifp, sg, now)) | |
1203 | return; | |
1204 | ||
a96d64b0 | 1205 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1206 | zlog_debug(log_sg(sg, "expiring in %pTVI"), &expire_wait); |
1207 | ||
1208 | if (sg->t_sg_expire) { | |
1209 | struct timeval remain; | |
1210 | ||
1211 | remain = thread_timer_remain(sg->t_sg_expire); | |
1212 | if (timercmp(&remain, &expire_wait, <=)) | |
1213 | return; | |
1214 | ||
1215 | THREAD_OFF(sg->t_sg_expire); | |
1216 | } | |
1217 | ||
1218 | thread_add_timer_tv(router->master, gm_t_sg_expire, sg, &expire_wait, | |
1219 | &sg->t_sg_expire); | |
1220 | } | |
1221 | ||
1222 | static void gm_handle_q_groupsrc(struct gm_if *gm_ifp, | |
1223 | struct gm_query_timers *timers, pim_addr grp, | |
1224 | const pim_addr *srcs, size_t n_src) | |
1225 | { | |
1226 | struct gm_sg *sg; | |
1227 | size_t i; | |
1228 | ||
1229 | for (i = 0; i < n_src; i++) { | |
1230 | sg = gm_sg_find(gm_ifp, grp, srcs[i]); | |
1231 | gm_sg_timer_start(gm_ifp, sg, timers->expire_wait); | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | static void gm_t_grp_expire(struct thread *t) | |
1236 | { | |
1237 | /* if we're here, that means when we received the group-specific query | |
1238 | * there was one or more active S,G for this group. For *,G the timer | |
1239 | * in sg->t_sg_expire is running separately and gets cancelled when we | |
1240 | * receive a report, so that work is left to gm_t_sg_expire and we | |
1241 | * shouldn't worry about it here. | |
1242 | */ | |
1243 | struct gm_grp_pending *pend = THREAD_ARG(t); | |
1244 | struct gm_if *gm_ifp = pend->iface; | |
1245 | struct gm_sg *sg, *sg_start, sg_ref = {}; | |
1246 | ||
95b13dc5 | 1247 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
1248 | zlog_debug(log_ifp("*,%pPAs S,G timer expired"), &pend->grp); |
1249 | ||
1250 | /* gteq lookup - try to find *,G or S,G (S,G is > *,G) | |
1251 | * could technically be gt to skip a possible *,G | |
1252 | */ | |
1253 | sg_ref.sgaddr.grp = pend->grp; | |
1254 | sg_ref.sgaddr.src = PIMADDR_ANY; | |
1255 | sg_start = gm_sgs_find_gteq(gm_ifp->sgs, &sg_ref); | |
1256 | ||
1257 | frr_each_from (gm_sgs, gm_ifp->sgs, sg, sg_start) { | |
1258 | struct gm_packet_sg *item; | |
1259 | ||
1260 | if (pim_addr_cmp(sg->sgaddr.grp, pend->grp)) | |
1261 | break; | |
1262 | if (pim_addr_is_any(sg->sgaddr.src)) | |
1263 | /* handled by gm_t_sg_expire / sg->t_sg_expire */ | |
1264 | continue; | |
1265 | if (gm_sg_check_recent(gm_ifp, sg, pend->query)) | |
1266 | continue; | |
1267 | ||
1268 | /* we may also have a group-source-specific query going on in | |
1269 | * parallel. But if we received nothing for the *,G query, | |
1270 | * the S,G query is kinda irrelevant. | |
1271 | */ | |
1272 | THREAD_OFF(sg->t_sg_expire); | |
1273 | ||
1274 | frr_each_safe (gm_packet_sg_subs, sg->subs_positive, item) | |
1275 | /* this will also drop the EXCLUDE S,G lists */ | |
1276 | gm_packet_sg_drop(item); | |
1277 | ||
1278 | gm_sg_update(sg, true); | |
1279 | } | |
1280 | ||
1281 | gm_grp_pends_del(gm_ifp->grp_pends, pend); | |
1282 | XFREE(MTYPE_GM_GRP_PENDING, pend); | |
1283 | } | |
1284 | ||
1285 | static void gm_handle_q_group(struct gm_if *gm_ifp, | |
1286 | struct gm_query_timers *timers, pim_addr grp) | |
1287 | { | |
1288 | struct gm_sg *sg, sg_ref = {}; | |
1289 | struct gm_grp_pending *pend, pend_ref = {}; | |
1290 | ||
1291 | sg_ref.sgaddr.grp = grp; | |
1292 | sg_ref.sgaddr.src = PIMADDR_ANY; | |
1293 | /* gteq lookup - try to find *,G or S,G (S,G is > *,G) */ | |
1294 | sg = gm_sgs_find_gteq(gm_ifp->sgs, &sg_ref); | |
1295 | ||
1296 | if (!sg || pim_addr_cmp(sg->sgaddr.grp, grp)) | |
1297 | /* we have nothing at all for this group - don't waste RAM */ | |
1298 | return; | |
1299 | ||
1300 | if (pim_addr_is_any(sg->sgaddr.src)) { | |
1301 | /* actually found *,G entry here */ | |
a96d64b0 | 1302 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1303 | zlog_debug(log_ifp("*,%pPAs expiry timer starting"), |
1304 | &grp); | |
1305 | gm_sg_timer_start(gm_ifp, sg, timers->expire_wait); | |
1306 | ||
1307 | sg = gm_sgs_next(gm_ifp->sgs, sg); | |
1308 | if (!sg || pim_addr_cmp(sg->sgaddr.grp, grp)) | |
1309 | /* no S,G for this group */ | |
1310 | return; | |
1311 | } | |
1312 | ||
1313 | pend_ref.grp = grp; | |
1314 | pend = gm_grp_pends_find(gm_ifp->grp_pends, &pend_ref); | |
1315 | ||
1316 | if (pend) { | |
1317 | struct timeval remain; | |
1318 | ||
1319 | remain = thread_timer_remain(pend->t_expire); | |
1320 | if (timercmp(&remain, &timers->expire_wait, <=)) | |
1321 | return; | |
1322 | ||
1323 | THREAD_OFF(pend->t_expire); | |
1324 | } else { | |
1325 | pend = XCALLOC(MTYPE_GM_GRP_PENDING, sizeof(*pend)); | |
1326 | pend->grp = grp; | |
1327 | pend->iface = gm_ifp; | |
1328 | gm_grp_pends_add(gm_ifp->grp_pends, pend); | |
1329 | } | |
1330 | ||
1331 | monotime(&pend->query); | |
1332 | thread_add_timer_tv(router->master, gm_t_grp_expire, pend, | |
1333 | &timers->expire_wait, &pend->t_expire); | |
1334 | ||
a96d64b0 | 1335 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1336 | zlog_debug(log_ifp("*,%pPAs S,G timer started: %pTHD"), &grp, |
1337 | pend->t_expire); | |
1338 | } | |
1339 | ||
1340 | static void gm_bump_querier(struct gm_if *gm_ifp) | |
1341 | { | |
1342 | struct pim_interface *pim_ifp = gm_ifp->ifp->info; | |
1343 | ||
1344 | THREAD_OFF(gm_ifp->t_query); | |
1345 | ||
1346 | if (pim_addr_is_any(pim_ifp->ll_lowest)) | |
1347 | return; | |
1348 | if (!IPV6_ADDR_SAME(&gm_ifp->querier, &pim_ifp->ll_lowest)) | |
1349 | return; | |
1350 | ||
1351 | gm_ifp->n_startup = gm_ifp->cur_qrv; | |
1352 | ||
1353 | thread_execute(router->master, gm_t_query, gm_ifp, 0); | |
1354 | } | |
1355 | ||
1356 | static void gm_t_other_querier(struct thread *t) | |
1357 | { | |
1358 | struct gm_if *gm_ifp = THREAD_ARG(t); | |
1359 | struct pim_interface *pim_ifp = gm_ifp->ifp->info; | |
1360 | ||
1361 | zlog_info(log_ifp("other querier timer expired")); | |
1362 | ||
1363 | gm_ifp->querier = pim_ifp->ll_lowest; | |
1364 | gm_ifp->n_startup = gm_ifp->cur_qrv; | |
1365 | ||
1366 | thread_execute(router->master, gm_t_query, gm_ifp, 0); | |
1367 | } | |
1368 | ||
1369 | static void gm_handle_query(struct gm_if *gm_ifp, | |
1370 | const struct sockaddr_in6 *pkt_src, | |
1371 | pim_addr *pkt_dst, char *data, size_t len) | |
1372 | { | |
1373 | struct mld_v2_query_hdr *hdr; | |
1374 | struct pim_interface *pim_ifp = gm_ifp->ifp->info; | |
1375 | struct gm_query_timers timers; | |
1376 | bool general_query; | |
1377 | ||
1378 | if (len < sizeof(struct mld_v2_query_hdr) && | |
1379 | len != sizeof(struct mld_v1_pkt)) { | |
1380 | zlog_warn(log_pkt_src("invalid query size")); | |
aa2f9349 | 1381 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
1382 | return; |
1383 | } | |
1384 | ||
1385 | hdr = (struct mld_v2_query_hdr *)data; | |
1386 | general_query = pim_addr_is_any(hdr->grp); | |
1387 | ||
1388 | if (!general_query && !IN6_IS_ADDR_MULTICAST(&hdr->grp)) { | |
1389 | zlog_warn(log_pkt_src( | |
1390 | "malformed MLDv2 query (invalid group %pI6)"), | |
1391 | &hdr->grp); | |
aa2f9349 | 1392 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
1393 | return; |
1394 | } | |
1395 | ||
1396 | if (len >= sizeof(struct mld_v2_query_hdr)) { | |
1397 | size_t src_space = ntohs(hdr->n_src) * sizeof(pim_addr); | |
1398 | ||
1399 | if (len < sizeof(struct mld_v2_query_hdr) + src_space) { | |
1400 | zlog_warn(log_pkt_src( | |
1401 | "malformed MLDv2 query (truncated source list)")); | |
aa2f9349 | 1402 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
1403 | return; |
1404 | } | |
1405 | ||
1406 | if (general_query && src_space) { | |
1407 | zlog_warn(log_pkt_src( | |
1408 | "malformed MLDv2 query (general query with non-empty source list)")); | |
aa2f9349 | 1409 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
1410 | return; |
1411 | } | |
1412 | } | |
1413 | ||
1414 | /* accepting queries unicast to us (or addressed to a wrong group) | |
1415 | * can mess up querier election as well as cause us to terminate | |
1416 | * traffic (since after a unicast query no reports will be coming in) | |
1417 | */ | |
1418 | if (!IPV6_ADDR_SAME(pkt_dst, &gm_all_hosts)) { | |
1419 | if (pim_addr_is_any(hdr->grp)) { | |
1420 | zlog_warn( | |
1421 | log_pkt_src( | |
1422 | "wrong destination %pPA for general query"), | |
1423 | pkt_dst); | |
aa2f9349 | 1424 | gm_ifp->stats.rx_drop_dstaddr++; |
5e5034b0 DL |
1425 | return; |
1426 | } | |
1427 | ||
1428 | if (!IPV6_ADDR_SAME(&hdr->grp, pkt_dst)) { | |
aa2f9349 | 1429 | gm_ifp->stats.rx_drop_dstaddr++; |
5e5034b0 DL |
1430 | zlog_warn( |
1431 | log_pkt_src( | |
1432 | "wrong destination %pPA for group specific query"), | |
1433 | pkt_dst); | |
1434 | return; | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | if (IPV6_ADDR_CMP(&pkt_src->sin6_addr, &gm_ifp->querier) < 0) { | |
95b13dc5 | 1439 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
1440 | zlog_debug( |
1441 | log_pkt_src("replacing elected querier %pPA"), | |
1442 | &gm_ifp->querier); | |
1443 | ||
1444 | gm_ifp->querier = pkt_src->sin6_addr; | |
1445 | } | |
1446 | ||
1447 | if (len == sizeof(struct mld_v1_pkt)) { | |
1448 | timers.qrv = gm_ifp->cur_qrv; | |
1449 | timers.max_resp_ms = hdr->max_resp_code; | |
1450 | timers.qqic_ms = gm_ifp->cur_query_intv; | |
1451 | } else { | |
1452 | timers.qrv = (hdr->flags & 0x7) ?: 8; | |
1453 | timers.max_resp_ms = mld_max_resp_decode(hdr->max_resp_code); | |
1454 | timers.qqic_ms = igmp_msg_decode8to16(hdr->qqic) * 1000; | |
1455 | } | |
1456 | timers.fuzz = gm_ifp->cfg_timing_fuzz; | |
1457 | ||
1458 | gm_expiry_calc(&timers); | |
1459 | ||
a96d64b0 | 1460 | if (PIM_DEBUG_GM_TRACE_DETAIL) |
5e5034b0 DL |
1461 | zlog_debug( |
1462 | log_ifp("query timers: QRV=%u max_resp=%ums qqic=%ums expire_wait=%pTVI"), | |
1463 | timers.qrv, timers.max_resp_ms, timers.qqic_ms, | |
1464 | &timers.expire_wait); | |
1465 | ||
1466 | if (IPV6_ADDR_CMP(&pkt_src->sin6_addr, &pim_ifp->ll_lowest) < 0) { | |
1467 | unsigned int other_ms; | |
1468 | ||
1469 | THREAD_OFF(gm_ifp->t_query); | |
1470 | THREAD_OFF(gm_ifp->t_other_querier); | |
1471 | ||
1472 | other_ms = timers.qrv * timers.qqic_ms + timers.max_resp_ms / 2; | |
1473 | thread_add_timer_msec(router->master, gm_t_other_querier, | |
1474 | gm_ifp, other_ms, | |
1475 | &gm_ifp->t_other_querier); | |
1476 | } | |
1477 | ||
1478 | if (len == sizeof(struct mld_v1_pkt)) { | |
aa2f9349 | 1479 | if (general_query) { |
5e5034b0 | 1480 | gm_handle_q_general(gm_ifp, &timers); |
aa2f9349 DL |
1481 | gm_ifp->stats.rx_query_old_general++; |
1482 | } else { | |
5e5034b0 | 1483 | gm_handle_q_group(gm_ifp, &timers, hdr->grp); |
aa2f9349 DL |
1484 | gm_ifp->stats.rx_query_old_group++; |
1485 | } | |
5e5034b0 DL |
1486 | return; |
1487 | } | |
1488 | ||
1489 | /* v2 query - [S]uppress bit */ | |
aa2f9349 DL |
1490 | if (hdr->flags & 0x8) { |
1491 | gm_ifp->stats.rx_query_new_sbit++; | |
5e5034b0 | 1492 | return; |
aa2f9349 | 1493 | } |
5e5034b0 | 1494 | |
aa2f9349 | 1495 | if (general_query) { |
5e5034b0 | 1496 | gm_handle_q_general(gm_ifp, &timers); |
aa2f9349 DL |
1497 | gm_ifp->stats.rx_query_new_general++; |
1498 | } else if (!ntohs(hdr->n_src)) { | |
5e5034b0 | 1499 | gm_handle_q_group(gm_ifp, &timers, hdr->grp); |
aa2f9349 DL |
1500 | gm_ifp->stats.rx_query_new_group++; |
1501 | } else { | |
5e5034b0 DL |
1502 | gm_handle_q_groupsrc(gm_ifp, &timers, hdr->grp, hdr->srcs, |
1503 | ntohs(hdr->n_src)); | |
aa2f9349 DL |
1504 | gm_ifp->stats.rx_query_new_groupsrc++; |
1505 | } | |
5e5034b0 DL |
1506 | } |
1507 | ||
1508 | static void gm_rx_process(struct gm_if *gm_ifp, | |
1509 | const struct sockaddr_in6 *pkt_src, pim_addr *pkt_dst, | |
1510 | void *data, size_t pktlen) | |
1511 | { | |
1512 | struct icmp6_plain_hdr *icmp6 = data; | |
1513 | uint16_t pkt_csum, ref_csum; | |
1514 | struct ipv6_ph ph6 = { | |
1515 | .src = pkt_src->sin6_addr, | |
1516 | .dst = *pkt_dst, | |
1517 | .ulpl = htons(pktlen), | |
1518 | .next_hdr = IPPROTO_ICMPV6, | |
1519 | }; | |
1520 | ||
1521 | pkt_csum = icmp6->icmp6_cksum; | |
1522 | icmp6->icmp6_cksum = 0; | |
1523 | ref_csum = in_cksum_with_ph6(&ph6, data, pktlen); | |
1524 | ||
1525 | if (pkt_csum != ref_csum) { | |
1526 | zlog_warn( | |
1527 | log_pkt_src( | |
1528 | "(dst %pPA) packet RX checksum failure, expected %04hx, got %04hx"), | |
1529 | pkt_dst, pkt_csum, ref_csum); | |
aa2f9349 | 1530 | gm_ifp->stats.rx_drop_csum++; |
5e5034b0 DL |
1531 | return; |
1532 | } | |
1533 | ||
1534 | data = (icmp6 + 1); | |
1535 | pktlen -= sizeof(*icmp6); | |
1536 | ||
1537 | switch (icmp6->icmp6_type) { | |
1538 | case ICMP6_MLD_QUERY: | |
1539 | gm_handle_query(gm_ifp, pkt_src, pkt_dst, data, pktlen); | |
1540 | break; | |
1541 | case ICMP6_MLD_V1_REPORT: | |
1542 | gm_handle_v1_report(gm_ifp, pkt_src, data, pktlen); | |
1543 | break; | |
1544 | case ICMP6_MLD_V1_DONE: | |
1545 | gm_handle_v1_leave(gm_ifp, pkt_src, data, pktlen); | |
1546 | break; | |
1547 | case ICMP6_MLD_V2_REPORT: | |
1548 | gm_handle_v2_report(gm_ifp, pkt_src, data, pktlen); | |
1549 | break; | |
1550 | } | |
1551 | } | |
1552 | ||
1553 | static bool ip6_check_hopopts_ra(uint8_t *hopopts, size_t hopopt_len, | |
1554 | uint16_t alert_type) | |
1555 | { | |
1556 | uint8_t *hopopt_end; | |
1557 | ||
1558 | if (hopopt_len < 8) | |
1559 | return false; | |
1560 | if (hopopt_len < (hopopts[1] + 1U) * 8U) | |
1561 | return false; | |
1562 | ||
1563 | hopopt_end = hopopts + (hopopts[1] + 1) * 8; | |
1564 | hopopts += 2; | |
1565 | ||
1566 | while (hopopts < hopopt_end) { | |
1567 | if (hopopts[0] == IP6OPT_PAD1) { | |
1568 | hopopts++; | |
1569 | continue; | |
1570 | } | |
1571 | ||
1572 | if (hopopts > hopopt_end - 2) | |
1573 | break; | |
1574 | if (hopopts > hopopt_end - 2 - hopopts[1]) | |
1575 | break; | |
1576 | ||
1577 | if (hopopts[0] == IP6OPT_ROUTER_ALERT && hopopts[1] == 2) { | |
1578 | uint16_t have_type = (hopopts[2] << 8) | hopopts[3]; | |
1579 | ||
1580 | if (have_type == alert_type) | |
1581 | return true; | |
1582 | } | |
1583 | ||
1584 | hopopts += 2 + hopopts[1]; | |
1585 | } | |
1586 | return false; | |
1587 | } | |
1588 | ||
1589 | static void gm_t_recv(struct thread *t) | |
1590 | { | |
df655593 | 1591 | struct pim_instance *pim = THREAD_ARG(t); |
5e5034b0 DL |
1592 | union { |
1593 | char buf[CMSG_SPACE(sizeof(struct in6_pktinfo)) + | |
1594 | CMSG_SPACE(256) /* hop options */ + | |
1595 | CMSG_SPACE(sizeof(int)) /* hopcount */]; | |
1596 | struct cmsghdr align; | |
1597 | } cmsgbuf; | |
1598 | struct cmsghdr *cmsg; | |
1599 | struct in6_pktinfo *pktinfo = NULL; | |
1600 | uint8_t *hopopts = NULL; | |
1601 | size_t hopopt_len = 0; | |
1602 | int *hoplimit = NULL; | |
1603 | char rxbuf[2048]; | |
1604 | struct msghdr mh[1] = {}; | |
1605 | struct iovec iov[1]; | |
5784a878 | 1606 | struct sockaddr_in6 pkt_src[1] = {}; |
5e5034b0 DL |
1607 | ssize_t nread; |
1608 | size_t pktlen; | |
1609 | ||
df655593 DL |
1610 | thread_add_read(router->master, gm_t_recv, pim, pim->gm_socket, |
1611 | &pim->t_gm_recv); | |
5e5034b0 DL |
1612 | |
1613 | iov->iov_base = rxbuf; | |
1614 | iov->iov_len = sizeof(rxbuf); | |
1615 | ||
1616 | mh->msg_name = pkt_src; | |
1617 | mh->msg_namelen = sizeof(pkt_src); | |
1618 | mh->msg_control = cmsgbuf.buf; | |
1619 | mh->msg_controllen = sizeof(cmsgbuf.buf); | |
1620 | mh->msg_iov = iov; | |
1621 | mh->msg_iovlen = array_size(iov); | |
1622 | mh->msg_flags = 0; | |
1623 | ||
df655593 | 1624 | nread = recvmsg(pim->gm_socket, mh, MSG_PEEK | MSG_TRUNC); |
5e5034b0 | 1625 | if (nread <= 0) { |
df655593 DL |
1626 | zlog_err("(VRF %s) RX error: %m", pim->vrf->name); |
1627 | pim->gm_rx_drop_sys++; | |
5e5034b0 DL |
1628 | return; |
1629 | } | |
1630 | ||
1631 | if ((size_t)nread > sizeof(rxbuf)) { | |
1632 | iov->iov_base = XMALLOC(MTYPE_GM_PACKET, nread); | |
1633 | iov->iov_len = nread; | |
1634 | } | |
df655593 | 1635 | nread = recvmsg(pim->gm_socket, mh, 0); |
5e5034b0 | 1636 | if (nread <= 0) { |
df655593 DL |
1637 | zlog_err("(VRF %s) RX error: %m", pim->vrf->name); |
1638 | pim->gm_rx_drop_sys++; | |
5e5034b0 DL |
1639 | goto out_free; |
1640 | } | |
1641 | ||
df655593 DL |
1642 | struct interface *ifp; |
1643 | ||
1644 | ifp = if_lookup_by_index(pkt_src->sin6_scope_id, pim->vrf->vrf_id); | |
1645 | if (!ifp || !ifp->info) | |
1646 | goto out_free; | |
1647 | ||
1648 | struct pim_interface *pim_ifp = ifp->info; | |
1649 | struct gm_if *gm_ifp = pim_ifp->mld; | |
1650 | ||
1651 | if (!gm_ifp) | |
5e5034b0 DL |
1652 | goto out_free; |
1653 | ||
1654 | for (cmsg = CMSG_FIRSTHDR(mh); cmsg; cmsg = CMSG_NXTHDR(mh, cmsg)) { | |
1655 | if (cmsg->cmsg_level != SOL_IPV6) | |
1656 | continue; | |
1657 | ||
1658 | switch (cmsg->cmsg_type) { | |
1659 | case IPV6_PKTINFO: | |
1660 | pktinfo = (struct in6_pktinfo *)CMSG_DATA(cmsg); | |
1661 | break; | |
1662 | case IPV6_HOPOPTS: | |
1663 | hopopts = CMSG_DATA(cmsg); | |
1664 | hopopt_len = cmsg->cmsg_len - sizeof(*cmsg); | |
1665 | break; | |
1666 | case IPV6_HOPLIMIT: | |
1667 | hoplimit = (int *)CMSG_DATA(cmsg); | |
1668 | break; | |
1669 | } | |
1670 | } | |
1671 | ||
1672 | if (!pktinfo || !hoplimit) { | |
1673 | zlog_err(log_ifp( | |
1674 | "BUG: packet without IPV6_PKTINFO or IPV6_HOPLIMIT")); | |
df655593 | 1675 | pim->gm_rx_drop_sys++; |
5e5034b0 DL |
1676 | goto out_free; |
1677 | } | |
1678 | ||
1679 | if (*hoplimit != 1) { | |
1680 | zlog_err(log_pkt_src("packet with hop limit != 1")); | |
aa2f9349 DL |
1681 | /* spoofing attempt => count on srcaddr counter */ |
1682 | gm_ifp->stats.rx_drop_srcaddr++; | |
5e5034b0 DL |
1683 | goto out_free; |
1684 | } | |
1685 | ||
1686 | if (!ip6_check_hopopts_ra(hopopts, hopopt_len, IP6_ALERT_MLD)) { | |
1687 | zlog_err(log_pkt_src( | |
1688 | "packet without IPv6 Router Alert MLD option")); | |
aa2f9349 | 1689 | gm_ifp->stats.rx_drop_ra++; |
5e5034b0 DL |
1690 | goto out_free; |
1691 | } | |
1692 | ||
1693 | if (IN6_IS_ADDR_UNSPECIFIED(&pkt_src->sin6_addr)) | |
1694 | /* reports from :: happen in normal operation for DAD, so | |
1695 | * don't spam log messages about this | |
1696 | */ | |
1697 | goto out_free; | |
1698 | ||
1699 | if (!IN6_IS_ADDR_LINKLOCAL(&pkt_src->sin6_addr)) { | |
1700 | zlog_warn(log_pkt_src("packet from invalid source address")); | |
aa2f9349 | 1701 | gm_ifp->stats.rx_drop_srcaddr++; |
5e5034b0 DL |
1702 | goto out_free; |
1703 | } | |
1704 | ||
1705 | pktlen = nread; | |
1706 | if (pktlen < sizeof(struct icmp6_plain_hdr)) { | |
1707 | zlog_warn(log_pkt_src("truncated packet")); | |
aa2f9349 | 1708 | gm_ifp->stats.rx_drop_malformed++; |
5e5034b0 DL |
1709 | goto out_free; |
1710 | } | |
1711 | ||
1712 | gm_rx_process(gm_ifp, pkt_src, &pktinfo->ipi6_addr, iov->iov_base, | |
1713 | pktlen); | |
1714 | ||
1715 | out_free: | |
1716 | if (iov->iov_base != rxbuf) | |
1717 | XFREE(MTYPE_GM_PACKET, iov->iov_base); | |
1718 | } | |
1719 | ||
1720 | static void gm_send_query(struct gm_if *gm_ifp, pim_addr grp, | |
1721 | const pim_addr *srcs, size_t n_srcs, bool s_bit) | |
1722 | { | |
1723 | struct pim_interface *pim_ifp = gm_ifp->ifp->info; | |
1724 | struct sockaddr_in6 dstaddr = { | |
1725 | .sin6_family = AF_INET6, | |
1726 | .sin6_scope_id = gm_ifp->ifp->ifindex, | |
1727 | }; | |
1728 | struct { | |
1729 | struct icmp6_plain_hdr hdr; | |
1730 | struct mld_v2_query_hdr v2_query; | |
1731 | } query = { | |
1732 | /* clang-format off */ | |
1733 | .hdr = { | |
1734 | .icmp6_type = ICMP6_MLD_QUERY, | |
1735 | .icmp6_code = 0, | |
1736 | }, | |
1737 | .v2_query = { | |
1738 | .grp = grp, | |
1739 | }, | |
1740 | /* clang-format on */ | |
1741 | }; | |
1742 | struct ipv6_ph ph6 = { | |
1743 | .src = pim_ifp->ll_lowest, | |
1744 | .ulpl = htons(sizeof(query)), | |
1745 | .next_hdr = IPPROTO_ICMPV6, | |
1746 | }; | |
1747 | union { | |
df655593 DL |
1748 | char buf[CMSG_SPACE(8) /* hop options */ + |
1749 | CMSG_SPACE(sizeof(struct in6_pktinfo))]; | |
5e5034b0 DL |
1750 | struct cmsghdr align; |
1751 | } cmsg = {}; | |
1752 | struct cmsghdr *cmh; | |
1753 | struct msghdr mh[1] = {}; | |
1754 | struct iovec iov[3]; | |
1755 | size_t iov_len; | |
1756 | ssize_t ret, expect_ret; | |
1757 | uint8_t *dp; | |
df655593 | 1758 | struct in6_pktinfo *pktinfo; |
5e5034b0 DL |
1759 | |
1760 | if (if_is_loopback(gm_ifp->ifp)) { | |
1761 | /* Linux is a bit odd with multicast on loopback */ | |
1762 | ph6.src = in6addr_loopback; | |
1763 | dstaddr.sin6_addr = in6addr_loopback; | |
1764 | } else if (pim_addr_is_any(grp)) | |
1765 | dstaddr.sin6_addr = gm_all_hosts; | |
1766 | else | |
1767 | dstaddr.sin6_addr = grp; | |
1768 | ||
1769 | query.v2_query.max_resp_code = | |
1770 | mld_max_resp_encode(gm_ifp->cur_max_resp); | |
1771 | query.v2_query.flags = (gm_ifp->cur_qrv < 8) ? gm_ifp->cur_qrv : 0; | |
1772 | if (s_bit) | |
1773 | query.v2_query.flags |= 0x08; | |
1774 | query.v2_query.qqic = | |
1775 | igmp_msg_encode16to8(gm_ifp->cur_query_intv / 1000); | |
1776 | query.v2_query.n_src = htons(n_srcs); | |
1777 | ||
1778 | ph6.dst = dstaddr.sin6_addr; | |
1779 | ||
1780 | /* ph6 not included in sendmsg */ | |
1781 | iov[0].iov_base = &ph6; | |
1782 | iov[0].iov_len = sizeof(ph6); | |
1783 | iov[1].iov_base = &query; | |
1784 | if (gm_ifp->cur_version == GM_MLDV1) { | |
1785 | iov_len = 2; | |
1786 | iov[1].iov_len = sizeof(query.hdr) + sizeof(struct mld_v1_pkt); | |
1787 | } else if (!n_srcs) { | |
1788 | iov_len = 2; | |
1789 | iov[1].iov_len = sizeof(query); | |
1790 | } else { | |
1791 | iov[1].iov_len = sizeof(query); | |
1792 | iov[2].iov_base = (void *)srcs; | |
1793 | iov[2].iov_len = n_srcs * sizeof(srcs[0]); | |
1794 | iov_len = 3; | |
1795 | } | |
1796 | ||
1797 | query.hdr.icmp6_cksum = in_cksumv(iov, iov_len); | |
1798 | ||
55eb347d | 1799 | if (PIM_DEBUG_GM_PACKETS) |
5e5034b0 DL |
1800 | zlog_debug( |
1801 | log_ifp("MLD query %pPA -> %pI6 (grp=%pPA, %zu srcs)"), | |
1802 | &pim_ifp->ll_lowest, &dstaddr.sin6_addr, &grp, n_srcs); | |
1803 | ||
1804 | mh->msg_name = &dstaddr; | |
1805 | mh->msg_namelen = sizeof(dstaddr); | |
1806 | mh->msg_iov = iov + 1; | |
1807 | mh->msg_iovlen = iov_len - 1; | |
1808 | mh->msg_control = &cmsg; | |
1809 | mh->msg_controllen = sizeof(cmsg.buf); | |
df655593 | 1810 | |
5e5034b0 DL |
1811 | cmh = CMSG_FIRSTHDR(mh); |
1812 | cmh->cmsg_level = IPPROTO_IPV6; | |
1813 | cmh->cmsg_type = IPV6_HOPOPTS; | |
1814 | cmh->cmsg_len = CMSG_LEN(8); | |
1815 | dp = CMSG_DATA(cmh); | |
1816 | *dp++ = 0; /* next header */ | |
1817 | *dp++ = 0; /* length (8-byte blocks, minus 1) */ | |
1818 | *dp++ = IP6OPT_ROUTER_ALERT; /* router alert */ | |
1819 | *dp++ = 2; /* length */ | |
1820 | *dp++ = 0; /* value (2 bytes) */ | |
1821 | *dp++ = 0; /* value (2 bytes) (0 = MLD) */ | |
1822 | *dp++ = 0; /* pad0 */ | |
1823 | *dp++ = 0; /* pad0 */ | |
1824 | ||
df655593 DL |
1825 | cmh = CMSG_NXTHDR(mh, cmh); |
1826 | cmh->cmsg_level = IPPROTO_IPV6; | |
1827 | cmh->cmsg_type = IPV6_PKTINFO; | |
1828 | cmh->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); | |
1829 | pktinfo = (struct in6_pktinfo *)CMSG_DATA(cmh); | |
1830 | pktinfo->ipi6_ifindex = gm_ifp->ifp->ifindex; | |
1831 | pktinfo->ipi6_addr = gm_ifp->cur_ll_lowest; | |
1832 | ||
5e5034b0 DL |
1833 | expect_ret = iov[1].iov_len; |
1834 | if (iov_len == 3) | |
1835 | expect_ret += iov[2].iov_len; | |
1836 | ||
1837 | frr_with_privs (&pimd_privs) { | |
df655593 | 1838 | ret = sendmsg(gm_ifp->pim->gm_socket, mh, 0); |
5e5034b0 DL |
1839 | } |
1840 | ||
aa2f9349 | 1841 | if (ret != expect_ret) { |
5e5034b0 | 1842 | zlog_warn(log_ifp("failed to send query: %m")); |
aa2f9349 DL |
1843 | gm_ifp->stats.tx_query_fail++; |
1844 | } else { | |
1845 | if (gm_ifp->cur_version == GM_MLDV1) { | |
1846 | if (pim_addr_is_any(grp)) | |
1847 | gm_ifp->stats.tx_query_old_general++; | |
1848 | else | |
1849 | gm_ifp->stats.tx_query_old_group++; | |
1850 | } else { | |
1851 | if (pim_addr_is_any(grp)) | |
1852 | gm_ifp->stats.tx_query_new_general++; | |
1853 | else if (!n_srcs) | |
1854 | gm_ifp->stats.tx_query_new_group++; | |
1855 | else | |
1856 | gm_ifp->stats.tx_query_new_groupsrc++; | |
1857 | } | |
1858 | } | |
5e5034b0 DL |
1859 | } |
1860 | ||
1861 | static void gm_t_query(struct thread *t) | |
1862 | { | |
1863 | struct gm_if *gm_ifp = THREAD_ARG(t); | |
1864 | unsigned int timer_ms = gm_ifp->cur_query_intv; | |
1865 | ||
1866 | if (gm_ifp->n_startup) { | |
1867 | timer_ms /= 4; | |
1868 | gm_ifp->n_startup--; | |
1869 | } | |
1870 | ||
1871 | thread_add_timer_msec(router->master, gm_t_query, gm_ifp, timer_ms, | |
1872 | &gm_ifp->t_query); | |
1873 | ||
1874 | gm_send_query(gm_ifp, PIMADDR_ANY, NULL, 0, false); | |
1875 | } | |
1876 | ||
1877 | static void gm_t_sg_query(struct thread *t) | |
1878 | { | |
1879 | struct gm_sg *sg = THREAD_ARG(t); | |
1880 | ||
1881 | gm_trigger_specific(sg); | |
1882 | } | |
1883 | ||
1884 | /* S,G specific queries (triggered by a member leaving) get a little slack | |
1885 | * time so we can bundle queries for [S1,S2,S3,...],G into the same query | |
1886 | */ | |
1887 | static void gm_send_specific(struct gm_gsq_pending *pend_gsq) | |
1888 | { | |
1889 | struct gm_if *gm_ifp = pend_gsq->iface; | |
1890 | ||
1891 | gm_send_query(gm_ifp, pend_gsq->grp, pend_gsq->srcs, pend_gsq->n_src, | |
1892 | pend_gsq->s_bit); | |
1893 | ||
1894 | gm_gsq_pends_del(gm_ifp->gsq_pends, pend_gsq); | |
1895 | XFREE(MTYPE_GM_GSQ_PENDING, pend_gsq); | |
1896 | } | |
1897 | ||
1898 | static void gm_t_gsq_pend(struct thread *t) | |
1899 | { | |
1900 | struct gm_gsq_pending *pend_gsq = THREAD_ARG(t); | |
1901 | ||
1902 | gm_send_specific(pend_gsq); | |
1903 | } | |
1904 | ||
1905 | static void gm_trigger_specific(struct gm_sg *sg) | |
1906 | { | |
1907 | struct gm_if *gm_ifp = sg->iface; | |
1908 | struct pim_interface *pim_ifp = gm_ifp->ifp->info; | |
1909 | struct gm_gsq_pending *pend_gsq, ref = {}; | |
1910 | ||
1911 | sg->n_query--; | |
1912 | if (sg->n_query) | |
1913 | thread_add_timer_msec(router->master, gm_t_sg_query, sg, | |
1914 | gm_ifp->cur_query_intv_trig, | |
1915 | &sg->t_sg_query); | |
1916 | ||
1917 | if (!IPV6_ADDR_SAME(&gm_ifp->querier, &pim_ifp->ll_lowest)) | |
1918 | return; | |
df655593 | 1919 | if (gm_ifp->pim->gm_socket == -1) |
5e5034b0 DL |
1920 | return; |
1921 | ||
a96d64b0 | 1922 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
1923 | zlog_debug(log_sg(sg, "triggered query")); |
1924 | ||
1925 | if (pim_addr_is_any(sg->sgaddr.src)) { | |
1926 | gm_send_query(gm_ifp, sg->sgaddr.grp, NULL, 0, sg->query_sbit); | |
1927 | return; | |
1928 | } | |
1929 | ||
1930 | ref.grp = sg->sgaddr.grp; | |
1931 | ref.s_bit = sg->query_sbit; | |
1932 | ||
1933 | pend_gsq = gm_gsq_pends_find(gm_ifp->gsq_pends, &ref); | |
1934 | if (!pend_gsq) { | |
1935 | pend_gsq = XCALLOC(MTYPE_GM_GSQ_PENDING, sizeof(*pend_gsq)); | |
1936 | pend_gsq->grp = sg->sgaddr.grp; | |
1937 | pend_gsq->s_bit = sg->query_sbit; | |
1938 | pend_gsq->iface = gm_ifp; | |
1939 | gm_gsq_pends_add(gm_ifp->gsq_pends, pend_gsq); | |
1940 | ||
1941 | thread_add_timer_tv(router->master, gm_t_gsq_pend, pend_gsq, | |
1942 | &gm_ifp->cfg_timing_fuzz, | |
1943 | &pend_gsq->t_send); | |
1944 | } | |
1945 | ||
1946 | assert(pend_gsq->n_src < array_size(pend_gsq->srcs)); | |
1947 | ||
1948 | pend_gsq->srcs[pend_gsq->n_src] = sg->sgaddr.src; | |
1949 | pend_gsq->n_src++; | |
1950 | ||
1951 | if (pend_gsq->n_src == array_size(pend_gsq->srcs)) { | |
1952 | THREAD_OFF(pend_gsq->t_send); | |
1953 | gm_send_specific(pend_gsq); | |
1954 | pend_gsq = NULL; | |
1955 | } | |
1956 | } | |
1957 | ||
df655593 | 1958 | static void gm_vrf_socket_incref(struct pim_instance *pim) |
5e5034b0 | 1959 | { |
df655593 | 1960 | struct vrf *vrf = pim->vrf; |
5e5034b0 DL |
1961 | int ret, intval; |
1962 | struct icmp6_filter filter[1]; | |
1963 | ||
df655593 DL |
1964 | if (pim->gm_socket_if_count++ && pim->gm_socket != -1) |
1965 | return; | |
5e5034b0 DL |
1966 | |
1967 | ICMP6_FILTER_SETBLOCKALL(filter); | |
1968 | ICMP6_FILTER_SETPASS(ICMP6_MLD_QUERY, filter); | |
1969 | ICMP6_FILTER_SETPASS(ICMP6_MLD_V1_REPORT, filter); | |
1970 | ICMP6_FILTER_SETPASS(ICMP6_MLD_V1_DONE, filter); | |
1971 | ICMP6_FILTER_SETPASS(ICMP6_MLD_V2_REPORT, filter); | |
1972 | ||
1973 | frr_with_privs (&pimd_privs) { | |
df655593 DL |
1974 | pim->gm_socket = vrf_socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6, |
1975 | vrf->vrf_id, vrf->name); | |
1976 | if (pim->gm_socket < 0) { | |
1977 | zlog_err("(VRF %s) could not create MLD socket: %m", | |
1978 | vrf->name); | |
5e5034b0 DL |
1979 | return; |
1980 | } | |
1981 | ||
df655593 DL |
1982 | ret = setsockopt(pim->gm_socket, SOL_ICMPV6, ICMP6_FILTER, |
1983 | filter, sizeof(filter)); | |
5e5034b0 | 1984 | if (ret) |
df655593 DL |
1985 | zlog_err("(VRF %s) failed to set ICMP6_FILTER: %m", |
1986 | vrf->name); | |
5e5034b0 DL |
1987 | |
1988 | intval = 1; | |
df655593 | 1989 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_RECVPKTINFO, |
5e5034b0 DL |
1990 | &intval, sizeof(intval)); |
1991 | if (ret) | |
df655593 DL |
1992 | zlog_err("(VRF %s) failed to set IPV6_RECVPKTINFO: %m", |
1993 | vrf->name); | |
5e5034b0 DL |
1994 | |
1995 | intval = 1; | |
df655593 | 1996 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_RECVHOPOPTS, |
5e5034b0 DL |
1997 | &intval, sizeof(intval)); |
1998 | if (ret) | |
df655593 DL |
1999 | zlog_err("(VRF %s) failed to set IPV6_HOPOPTS: %m", |
2000 | vrf->name); | |
5e5034b0 DL |
2001 | |
2002 | intval = 1; | |
df655593 | 2003 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_RECVHOPLIMIT, |
5e5034b0 DL |
2004 | &intval, sizeof(intval)); |
2005 | if (ret) | |
df655593 DL |
2006 | zlog_err("(VRF %s) failed to set IPV6_HOPLIMIT: %m", |
2007 | vrf->name); | |
5e5034b0 DL |
2008 | |
2009 | intval = 1; | |
df655593 | 2010 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_MULTICAST_LOOP, |
5e5034b0 DL |
2011 | &intval, sizeof(intval)); |
2012 | if (ret) | |
2013 | zlog_err( | |
df655593 DL |
2014 | "(VRF %s) failed to disable IPV6_MULTICAST_LOOP: %m", |
2015 | vrf->name); | |
5e5034b0 DL |
2016 | |
2017 | intval = 1; | |
df655593 | 2018 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_MULTICAST_HOPS, |
5e5034b0 DL |
2019 | &intval, sizeof(intval)); |
2020 | if (ret) | |
df655593 DL |
2021 | zlog_err( |
2022 | "(VRF %s) failed to set IPV6_MULTICAST_HOPS: %m", | |
2023 | vrf->name); | |
5e5034b0 DL |
2024 | |
2025 | /* NB: IPV6_MULTICAST_ALL does not completely bypass multicast | |
2026 | * RX filtering in Linux. It only means "receive all groups | |
2027 | * that something on the system has joined". To actually | |
2028 | * receive *all* MLD packets - which is what we need - | |
2029 | * multicast routing must be enabled on the interface. And | |
2030 | * this only works for MLD packets specifically. | |
2031 | * | |
2032 | * For reference, check ip6_mc_input() in net/ipv6/ip6_input.c | |
2033 | * and in particular the #ifdef CONFIG_IPV6_MROUTE block there. | |
2034 | * | |
2035 | * Also note that the code there explicitly checks for the IPv6 | |
2036 | * router alert MLD option (which is required by the RFC to be | |
2037 | * on MLD packets.) That implies trying to support hosts which | |
2038 | * erroneously don't add that option is just not possible. | |
2039 | */ | |
2040 | intval = 1; | |
df655593 | 2041 | ret = setsockopt(pim->gm_socket, SOL_IPV6, IPV6_MULTICAST_ALL, |
5e5034b0 DL |
2042 | &intval, sizeof(intval)); |
2043 | if (ret) | |
2044 | zlog_info( | |
df655593 DL |
2045 | "(VRF %s) failed to set IPV6_MULTICAST_ALL: %m (OK on old kernels)", |
2046 | vrf->name); | |
2047 | } | |
5e5034b0 | 2048 | |
df655593 DL |
2049 | thread_add_read(router->master, gm_t_recv, pim, pim->gm_socket, |
2050 | &pim->t_gm_recv); | |
2051 | } | |
2052 | ||
2053 | static void gm_vrf_socket_decref(struct pim_instance *pim) | |
2054 | { | |
2055 | if (--pim->gm_socket_if_count) | |
2056 | return; | |
2057 | ||
2058 | THREAD_OFF(pim->t_gm_recv); | |
2059 | close(pim->gm_socket); | |
2060 | pim->gm_socket = -1; | |
2061 | } | |
2062 | ||
2063 | static void gm_start(struct interface *ifp) | |
2064 | { | |
2065 | struct pim_interface *pim_ifp = ifp->info; | |
2066 | struct gm_if *gm_ifp; | |
2067 | ||
2068 | assert(pim_ifp); | |
2069 | assert(pim_ifp->pim); | |
2070 | assert(pim_ifp->mroute_vif_index >= 0); | |
2071 | assert(!pim_ifp->mld); | |
2072 | ||
2073 | gm_vrf_socket_incref(pim_ifp->pim); | |
2074 | ||
2075 | gm_ifp = XCALLOC(MTYPE_GM_IFACE, sizeof(*gm_ifp)); | |
2076 | gm_ifp->ifp = ifp; | |
2077 | pim_ifp->mld = gm_ifp; | |
2078 | gm_ifp->pim = pim_ifp->pim; | |
2079 | monotime(&gm_ifp->started); | |
2080 | ||
2081 | zlog_info(log_ifp("starting MLD")); | |
2082 | ||
2083 | if (pim_ifp->mld_version == 1) | |
2084 | gm_ifp->cur_version = GM_MLDV1; | |
2085 | else | |
2086 | gm_ifp->cur_version = GM_MLDV2; | |
2087 | ||
914710d7 | 2088 | gm_ifp->cur_qrv = pim_ifp->gm_default_robustness_variable; |
df655593 | 2089 | gm_ifp->cur_query_intv = pim_ifp->gm_default_query_interval * 1000; |
707a9e9a A |
2090 | gm_ifp->cur_query_intv_trig = |
2091 | pim_ifp->gm_specific_query_max_response_time_dsec * 100; | |
914710d7 | 2092 | gm_ifp->cur_max_resp = pim_ifp->gm_query_max_response_time_dsec * 100; |
51b4991f | 2093 | gm_ifp->cur_lmqc = pim_ifp->gm_last_member_query_count; |
df655593 DL |
2094 | |
2095 | gm_ifp->cfg_timing_fuzz.tv_sec = 0; | |
2096 | gm_ifp->cfg_timing_fuzz.tv_usec = 10 * 1000; | |
2097 | ||
2098 | gm_sgs_init(gm_ifp->sgs); | |
2099 | gm_subscribers_init(gm_ifp->subscribers); | |
2100 | gm_packet_expires_init(gm_ifp->expires); | |
2101 | gm_grp_pends_init(gm_ifp->grp_pends); | |
2102 | gm_gsq_pends_init(gm_ifp->gsq_pends); | |
2103 | ||
2104 | frr_with_privs (&pimd_privs) { | |
5e5034b0 | 2105 | struct ipv6_mreq mreq; |
df655593 | 2106 | int ret; |
5e5034b0 DL |
2107 | |
2108 | /* all-MLDv2 group */ | |
2109 | mreq.ipv6mr_multiaddr = gm_all_routers; | |
2110 | mreq.ipv6mr_interface = ifp->ifindex; | |
df655593 DL |
2111 | ret = setsockopt(gm_ifp->pim->gm_socket, SOL_IPV6, |
2112 | IPV6_JOIN_GROUP, &mreq, sizeof(mreq)); | |
5e5034b0 DL |
2113 | if (ret) |
2114 | zlog_err("(%s) failed to join ff02::16 (all-MLDv2): %m", | |
2115 | ifp->name); | |
2116 | } | |
5e5034b0 DL |
2117 | } |
2118 | ||
e309780f | 2119 | void gm_group_delete(struct gm_if *gm_ifp) |
5e5034b0 | 2120 | { |
e309780f | 2121 | struct gm_sg *sg; |
5e5034b0 DL |
2122 | struct gm_packet_state *pkt; |
2123 | struct gm_grp_pending *pend_grp; | |
2124 | struct gm_gsq_pending *pend_gsq; | |
2125 | struct gm_subscriber *subscriber; | |
e309780f SP |
2126 | |
2127 | while ((pkt = gm_packet_expires_first(gm_ifp->expires))) | |
2128 | gm_packet_drop(pkt, false); | |
2129 | ||
2130 | while ((pend_grp = gm_grp_pends_pop(gm_ifp->grp_pends))) { | |
2131 | THREAD_OFF(pend_grp->t_expire); | |
2132 | XFREE(MTYPE_GM_GRP_PENDING, pend_grp); | |
2133 | } | |
2134 | ||
2135 | while ((pend_gsq = gm_gsq_pends_pop(gm_ifp->gsq_pends))) { | |
2136 | THREAD_OFF(pend_gsq->t_send); | |
2137 | XFREE(MTYPE_GM_GSQ_PENDING, pend_gsq); | |
2138 | } | |
2139 | ||
2140 | while ((sg = gm_sgs_pop(gm_ifp->sgs))) { | |
2141 | THREAD_OFF(sg->t_sg_expire); | |
2142 | assertf(!gm_packet_sg_subs_count(sg->subs_negative), "%pSG", | |
2143 | &sg->sgaddr); | |
2144 | assertf(!gm_packet_sg_subs_count(sg->subs_positive), "%pSG", | |
2145 | &sg->sgaddr); | |
2146 | ||
2147 | gm_sg_free(sg); | |
2148 | } | |
2149 | while ((subscriber = gm_subscribers_pop(gm_ifp->subscribers))) { | |
2150 | assertf(!gm_packets_count(subscriber->packets), "%pPA", | |
2151 | &subscriber->addr); | |
2152 | XFREE(MTYPE_GM_SUBSCRIBER, subscriber); | |
2153 | } | |
2154 | } | |
2155 | ||
2156 | void gm_ifp_teardown(struct interface *ifp) | |
2157 | { | |
2158 | struct pim_interface *pim_ifp = ifp->info; | |
2159 | struct gm_if *gm_ifp; | |
5e5034b0 DL |
2160 | |
2161 | if (!pim_ifp || !pim_ifp->mld) | |
2162 | return; | |
2163 | ||
2164 | gm_ifp = pim_ifp->mld; | |
2165 | gm_ifp->stopping = true; | |
95b13dc5 | 2166 | if (PIM_DEBUG_GM_EVENTS) |
5e5034b0 DL |
2167 | zlog_debug(log_ifp("MLD stop")); |
2168 | ||
2169 | THREAD_OFF(gm_ifp->t_query); | |
2170 | THREAD_OFF(gm_ifp->t_other_querier); | |
5e5034b0 DL |
2171 | THREAD_OFF(gm_ifp->t_expire); |
2172 | ||
df655593 DL |
2173 | frr_with_privs (&pimd_privs) { |
2174 | struct ipv6_mreq mreq; | |
2175 | int ret; | |
2176 | ||
2177 | /* all-MLDv2 group */ | |
2178 | mreq.ipv6mr_multiaddr = gm_all_routers; | |
2179 | mreq.ipv6mr_interface = ifp->ifindex; | |
2180 | ret = setsockopt(gm_ifp->pim->gm_socket, SOL_IPV6, | |
2181 | IPV6_LEAVE_GROUP, &mreq, sizeof(mreq)); | |
2182 | if (ret) | |
2183 | zlog_err( | |
2184 | "(%s) failed to leave ff02::16 (all-MLDv2): %m", | |
2185 | ifp->name); | |
5e5034b0 DL |
2186 | } |
2187 | ||
df655593 DL |
2188 | gm_vrf_socket_decref(gm_ifp->pim); |
2189 | ||
e309780f | 2190 | gm_group_delete(gm_ifp); |
5e5034b0 DL |
2191 | |
2192 | gm_grp_pends_fini(gm_ifp->grp_pends); | |
2193 | gm_packet_expires_fini(gm_ifp->expires); | |
2194 | gm_subscribers_fini(gm_ifp->subscribers); | |
2195 | gm_sgs_fini(gm_ifp->sgs); | |
2196 | ||
2197 | XFREE(MTYPE_GM_IFACE, gm_ifp); | |
2198 | pim_ifp->mld = NULL; | |
2199 | } | |
2200 | ||
2201 | static void gm_update_ll(struct interface *ifp) | |
2202 | { | |
2203 | struct pim_interface *pim_ifp = ifp->info; | |
f4e8f5d4 | 2204 | struct gm_if *gm_ifp = pim_ifp->mld; |
5e5034b0 DL |
2205 | bool was_querier; |
2206 | ||
2207 | was_querier = | |
2208 | !IPV6_ADDR_CMP(&gm_ifp->cur_ll_lowest, &gm_ifp->querier) && | |
2209 | !pim_addr_is_any(gm_ifp->querier); | |
2210 | ||
2211 | gm_ifp->cur_ll_lowest = pim_ifp->ll_lowest; | |
2212 | if (was_querier) | |
2213 | gm_ifp->querier = pim_ifp->ll_lowest; | |
2214 | THREAD_OFF(gm_ifp->t_query); | |
2215 | ||
2216 | if (pim_addr_is_any(gm_ifp->cur_ll_lowest)) { | |
2217 | if (was_querier) | |
2218 | zlog_info(log_ifp( | |
2219 | "lost link-local address, stopping querier")); | |
2220 | return; | |
2221 | } | |
2222 | ||
2223 | if (was_querier) | |
2224 | zlog_info(log_ifp("new link-local %pPA while querier"), | |
2225 | &gm_ifp->cur_ll_lowest); | |
2226 | else if (IPV6_ADDR_CMP(&gm_ifp->cur_ll_lowest, &gm_ifp->querier) < 0 || | |
2227 | pim_addr_is_any(gm_ifp->querier)) { | |
2228 | zlog_info(log_ifp("new link-local %pPA, becoming querier"), | |
2229 | &gm_ifp->cur_ll_lowest); | |
2230 | gm_ifp->querier = gm_ifp->cur_ll_lowest; | |
2231 | } else | |
2232 | return; | |
2233 | ||
5e5034b0 DL |
2234 | gm_ifp->n_startup = gm_ifp->cur_qrv; |
2235 | thread_execute(router->master, gm_t_query, gm_ifp, 0); | |
2236 | } | |
2237 | ||
2238 | void gm_ifp_update(struct interface *ifp) | |
2239 | { | |
2240 | struct pim_interface *pim_ifp = ifp->info; | |
2241 | struct gm_if *gm_ifp; | |
2242 | bool changed = false; | |
2243 | ||
2244 | if (!pim_ifp) | |
2245 | return; | |
2246 | if (!if_is_operative(ifp) || !pim_ifp->pim || | |
2247 | pim_ifp->mroute_vif_index < 0) { | |
2248 | gm_ifp_teardown(ifp); | |
2249 | return; | |
2250 | } | |
2251 | ||
5c1b3cd2 A |
2252 | /* |
2253 | * If ipv6 mld is not enabled on interface, do not start mld activites. | |
2254 | */ | |
2255 | if (!pim_ifp->gm_enable) | |
2256 | return; | |
2257 | ||
2258 | if (!pim_ifp->mld) { | |
2259 | changed = true; | |
5e5034b0 | 2260 | gm_start(ifp); |
5c1b3cd2 | 2261 | } |
5e5034b0 DL |
2262 | |
2263 | gm_ifp = pim_ifp->mld; | |
2264 | if (IPV6_ADDR_CMP(&pim_ifp->ll_lowest, &gm_ifp->cur_ll_lowest)) | |
2265 | gm_update_ll(ifp); | |
2266 | ||
2267 | unsigned int cfg_query_intv = pim_ifp->gm_default_query_interval * 1000; | |
2268 | ||
2269 | if (gm_ifp->cur_query_intv != cfg_query_intv) { | |
2270 | gm_ifp->cur_query_intv = cfg_query_intv; | |
707a9e9a A |
2271 | changed = true; |
2272 | } | |
2273 | ||
2274 | unsigned int cfg_query_intv_trig = | |
2275 | pim_ifp->gm_specific_query_max_response_time_dsec * 100; | |
2276 | ||
2277 | if (gm_ifp->cur_query_intv_trig != cfg_query_intv_trig) { | |
2278 | gm_ifp->cur_query_intv_trig = cfg_query_intv_trig; | |
5e5034b0 DL |
2279 | changed = true; |
2280 | } | |
2281 | ||
914710d7 A |
2282 | unsigned int cfg_max_response = |
2283 | pim_ifp->gm_query_max_response_time_dsec * 100; | |
2284 | ||
2285 | if (gm_ifp->cur_max_resp != cfg_max_response) | |
2286 | gm_ifp->cur_max_resp = cfg_max_response; | |
2287 | ||
51b4991f A |
2288 | if (gm_ifp->cur_lmqc != pim_ifp->gm_last_member_query_count) |
2289 | gm_ifp->cur_lmqc = pim_ifp->gm_last_member_query_count; | |
2290 | ||
5e5034b0 DL |
2291 | enum gm_version cfg_version; |
2292 | ||
2293 | if (pim_ifp->mld_version == 1) | |
2294 | cfg_version = GM_MLDV1; | |
2295 | else | |
2296 | cfg_version = GM_MLDV2; | |
2297 | if (gm_ifp->cur_version != cfg_version) { | |
2298 | gm_ifp->cur_version = cfg_version; | |
2299 | changed = true; | |
2300 | } | |
2301 | ||
2302 | if (changed) { | |
a96d64b0 | 2303 | if (PIM_DEBUG_GM_TRACE) |
5e5034b0 DL |
2304 | zlog_debug(log_ifp( |
2305 | "MLD querier config changed, querying")); | |
2306 | gm_bump_querier(gm_ifp); | |
2307 | } | |
2308 | } | |
2309 | ||
d2951219 DL |
2310 | /* |
2311 | * CLI (show commands only) | |
2312 | */ | |
5e5034b0 DL |
2313 | |
2314 | #include "lib/command.h" | |
2315 | ||
5e5034b0 | 2316 | #include "pimd/pim6_mld_clippy.c" |
5e5034b0 | 2317 | |
d2951219 DL |
2318 | static struct vrf *gm_cmd_vrf_lookup(struct vty *vty, const char *vrf_str, |
2319 | int *err) | |
2320 | { | |
2321 | struct vrf *ret; | |
2322 | ||
2323 | if (!vrf_str) | |
2324 | return vrf_lookup_by_id(VRF_DEFAULT); | |
2325 | if (!strcmp(vrf_str, "all")) | |
2326 | return NULL; | |
2327 | ret = vrf_lookup_by_name(vrf_str); | |
2328 | if (ret) | |
2329 | return ret; | |
2330 | ||
2331 | vty_out(vty, "%% VRF %pSQq does not exist\n", vrf_str); | |
2332 | *err = CMD_WARNING; | |
2333 | return NULL; | |
2334 | } | |
2335 | ||
2336 | static void gm_show_if_one_detail(struct vty *vty, struct interface *ifp) | |
2337 | { | |
2338 | struct pim_interface *pim_ifp = (struct pim_interface *)ifp->info; | |
2339 | struct gm_if *gm_ifp; | |
2340 | bool querier; | |
2341 | size_t i; | |
2342 | ||
2343 | if (!pim_ifp) { | |
2344 | vty_out(vty, "Interface %s: no PIM/MLD config\n\n", ifp->name); | |
2345 | return; | |
2346 | } | |
2347 | ||
2348 | gm_ifp = pim_ifp->mld; | |
2349 | if (!gm_ifp) { | |
2350 | vty_out(vty, "Interface %s: MLD not running\n\n", ifp->name); | |
2351 | return; | |
2352 | } | |
2353 | ||
2354 | querier = IPV6_ADDR_SAME(&gm_ifp->querier, &pim_ifp->ll_lowest); | |
2355 | ||
2356 | vty_out(vty, "Interface %s: MLD running\n", ifp->name); | |
2357 | vty_out(vty, " Uptime: %pTVMs\n", &gm_ifp->started); | |
2358 | vty_out(vty, " MLD version: %d\n", gm_ifp->cur_version); | |
2359 | vty_out(vty, " Querier: %pPA%s\n", &gm_ifp->querier, | |
2360 | querier ? " (this system)" : ""); | |
2361 | vty_out(vty, " Query timer: %pTH\n", gm_ifp->t_query); | |
2362 | vty_out(vty, " Other querier timer: %pTH\n", | |
2363 | gm_ifp->t_other_querier); | |
2364 | vty_out(vty, " Robustness value: %u\n", gm_ifp->cur_qrv); | |
2365 | vty_out(vty, " Query interval: %ums\n", | |
2366 | gm_ifp->cur_query_intv); | |
2367 | vty_out(vty, " Query response timer: %ums\n", gm_ifp->cur_max_resp); | |
2368 | vty_out(vty, " Last member query intv.: %ums\n", | |
2369 | gm_ifp->cur_query_intv_trig); | |
2370 | vty_out(vty, " %u expiry timers from general queries:\n", | |
2371 | gm_ifp->n_pending); | |
2372 | for (i = 0; i < gm_ifp->n_pending; i++) { | |
2373 | struct gm_general_pending *p = &gm_ifp->pending[i]; | |
2374 | ||
2375 | vty_out(vty, " %9pTVMs ago (query) -> %9pTVMu (expiry)\n", | |
2376 | &p->query, &p->expiry); | |
2377 | } | |
2378 | vty_out(vty, " %zu expiry timers from *,G queries\n", | |
2379 | gm_grp_pends_count(gm_ifp->grp_pends)); | |
2380 | vty_out(vty, " %zu expiry timers from S,G queries\n", | |
2381 | gm_gsq_pends_count(gm_ifp->gsq_pends)); | |
2382 | vty_out(vty, " %zu total *,G/S,G from %zu hosts in %zu bundles\n", | |
2383 | gm_sgs_count(gm_ifp->sgs), | |
2384 | gm_subscribers_count(gm_ifp->subscribers), | |
2385 | gm_packet_expires_count(gm_ifp->expires)); | |
2386 | vty_out(vty, "\n"); | |
2387 | } | |
2388 | ||
2389 | static void gm_show_if_one(struct vty *vty, struct interface *ifp, | |
cbb1e513 | 2390 | json_object *js_if, struct ttable *tt) |
d2951219 DL |
2391 | { |
2392 | struct pim_interface *pim_ifp = (struct pim_interface *)ifp->info; | |
2393 | struct gm_if *gm_ifp = pim_ifp->mld; | |
2394 | bool querier; | |
2395 | ||
d2951219 DL |
2396 | querier = IPV6_ADDR_SAME(&gm_ifp->querier, &pim_ifp->ll_lowest); |
2397 | ||
2398 | if (js_if) { | |
cb406d5c | 2399 | json_object_string_add(js_if, "name", ifp->name); |
3ab119a4 SP |
2400 | json_object_string_addf(js_if, "address", "%pPA", |
2401 | &pim_ifp->primary_address); | |
d2951219 DL |
2402 | json_object_string_add(js_if, "state", "up"); |
2403 | json_object_string_addf(js_if, "version", "%d", | |
2404 | gm_ifp->cur_version); | |
2405 | json_object_string_addf(js_if, "upTime", "%pTVMs", | |
2406 | &gm_ifp->started); | |
2407 | json_object_boolean_add(js_if, "querier", querier); | |
2408 | json_object_string_addf(js_if, "querierIp", "%pPA", | |
2409 | &gm_ifp->querier); | |
2410 | if (querier) | |
2411 | json_object_string_addf(js_if, "queryTimer", "%pTH", | |
2412 | gm_ifp->t_query); | |
2413 | else | |
2414 | json_object_string_addf(js_if, "otherQuerierTimer", | |
2415 | "%pTH", | |
2416 | gm_ifp->t_other_querier); | |
cb406d5c A |
2417 | json_object_int_add(js_if, "timerRobustnessValue", |
2418 | gm_ifp->cur_qrv); | |
6b94500d A |
2419 | json_object_int_add(js_if, "lastMemberQueryCount", |
2420 | gm_ifp->cur_lmqc); | |
cb406d5c A |
2421 | json_object_int_add(js_if, "timerQueryIntervalMsec", |
2422 | gm_ifp->cur_query_intv); | |
2423 | json_object_int_add(js_if, "timerQueryResponseTimerMsec", | |
2424 | gm_ifp->cur_max_resp); | |
2425 | json_object_int_add(js_if, "timerLastMemberQueryIntervalMsec", | |
2426 | gm_ifp->cur_query_intv_trig); | |
d2951219 | 2427 | } else { |
cbb1e513 SP |
2428 | ttable_add_row(tt, "%s|%s|%pPAs|%d|%s|%pPAs|%pTH|%pTVMs", |
2429 | ifp->name, "up", &pim_ifp->primary_address, | |
2430 | gm_ifp->cur_version, querier ? "local" : "other", | |
2431 | &gm_ifp->querier, gm_ifp->t_query, | |
2432 | &gm_ifp->started); | |
d2951219 DL |
2433 | } |
2434 | } | |
2435 | ||
2436 | static void gm_show_if_vrf(struct vty *vty, struct vrf *vrf, const char *ifname, | |
2437 | bool detail, json_object *js) | |
2438 | { | |
2439 | struct interface *ifp; | |
cbb1e513 | 2440 | json_object *js_vrf = NULL; |
fe4db62c | 2441 | struct pim_interface *pim_ifp; |
cbb1e513 SP |
2442 | struct ttable *tt = NULL; |
2443 | char *table = NULL; | |
d2951219 DL |
2444 | |
2445 | if (js) { | |
2446 | js_vrf = json_object_new_object(); | |
2447 | json_object_object_add(js, vrf->name, js_vrf); | |
2448 | } | |
2449 | ||
cbb1e513 SP |
2450 | if (!js && !detail) { |
2451 | /* Prepare table. */ | |
2452 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
2453 | ttable_add_row( | |
2454 | tt, | |
2455 | "Interface|State|Address|V|Querier|QuerierIp|Query Timer|Uptime"); | |
2456 | tt->style.cell.rpad = 2; | |
2457 | tt->style.corner = '+'; | |
2458 | ttable_restyle(tt); | |
2459 | } | |
2460 | ||
d2951219 DL |
2461 | FOR_ALL_INTERFACES (vrf, ifp) { |
2462 | json_object *js_if = NULL; | |
2463 | ||
2464 | if (ifname && strcmp(ifp->name, ifname)) | |
2465 | continue; | |
2466 | if (detail && !js) { | |
2467 | gm_show_if_one_detail(vty, ifp); | |
2468 | continue; | |
2469 | } | |
2470 | ||
cbb1e513 | 2471 | pim_ifp = ifp->info; |
fe4db62c SP |
2472 | |
2473 | if (!pim_ifp || !pim_ifp->mld) | |
d2951219 | 2474 | continue; |
fe4db62c | 2475 | |
d2951219 DL |
2476 | if (js) { |
2477 | js_if = json_object_new_object(); | |
2478 | json_object_object_add(js_vrf, ifp->name, js_if); | |
2479 | } | |
2480 | ||
cbb1e513 SP |
2481 | gm_show_if_one(vty, ifp, js_if, tt); |
2482 | } | |
2483 | ||
2484 | /* Dump the generated table. */ | |
2485 | if (!js && !detail) { | |
2486 | table = ttable_dump(tt, "\n"); | |
2487 | vty_out(vty, "%s\n", table); | |
2488 | XFREE(MTYPE_TMP, table); | |
2489 | ttable_del(tt); | |
d2951219 DL |
2490 | } |
2491 | } | |
2492 | ||
2493 | static void gm_show_if(struct vty *vty, struct vrf *vrf, const char *ifname, | |
2494 | bool detail, json_object *js) | |
2495 | { | |
d2951219 DL |
2496 | if (vrf) |
2497 | gm_show_if_vrf(vty, vrf, ifname, detail, js); | |
2498 | else | |
2499 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) | |
2500 | gm_show_if_vrf(vty, vrf, ifname, detail, js); | |
2501 | } | |
2502 | ||
2503 | DEFPY(gm_show_interface, | |
2504 | gm_show_interface_cmd, | |
ad56b07c | 2505 | "show ipv6 mld [vrf <VRF|all>$vrf_str] interface [IFNAME | detail$detail] [json$json]", |
d2951219 DL |
2506 | SHOW_STR |
2507 | IPV6_STR | |
2508 | MLD_STR | |
2509 | VRF_FULL_CMD_HELP_STR | |
2510 | "MLD interface information\n" | |
ad56b07c | 2511 | "Interface name\n" |
d2951219 DL |
2512 | "Detailed output\n" |
2513 | JSON_STR) | |
2514 | { | |
2515 | int ret = CMD_SUCCESS; | |
2516 | struct vrf *vrf; | |
2517 | json_object *js = NULL; | |
2518 | ||
2519 | vrf = gm_cmd_vrf_lookup(vty, vrf_str, &ret); | |
2520 | if (ret != CMD_SUCCESS) | |
2521 | return ret; | |
2522 | ||
2523 | if (json) | |
2524 | js = json_object_new_object(); | |
2525 | gm_show_if(vty, vrf, ifname, !!detail, js); | |
2526 | return vty_json(vty, js); | |
2527 | } | |
2528 | ||
2529 | static void gm_show_stats_one(struct vty *vty, struct gm_if *gm_ifp, | |
2530 | json_object *js_if) | |
2531 | { | |
2532 | struct gm_if_stats *stats = &gm_ifp->stats; | |
2533 | /* clang-format off */ | |
2534 | struct { | |
2535 | const char *text; | |
2536 | const char *js_key; | |
2537 | uint64_t *val; | |
2538 | } *item, items[] = { | |
2539 | { "v2 reports received", "rxV2Reports", &stats->rx_new_report }, | |
2540 | { "v1 reports received", "rxV1Reports", &stats->rx_old_report }, | |
2541 | { "v1 done received", "rxV1Done", &stats->rx_old_leave }, | |
2542 | ||
2543 | { "v2 *,* queries received", "rxV2QueryGeneral", &stats->rx_query_new_general }, | |
2544 | { "v2 *,G queries received", "rxV2QueryGroup", &stats->rx_query_new_group }, | |
2545 | { "v2 S,G queries received", "rxV2QueryGroupSource", &stats->rx_query_new_groupsrc }, | |
2546 | { "v2 S-bit queries received", "rxV2QuerySBit", &stats->rx_query_new_sbit }, | |
2547 | { "v1 *,* queries received", "rxV1QueryGeneral", &stats->rx_query_old_general }, | |
2548 | { "v1 *,G queries received", "rxV1QueryGroup", &stats->rx_query_old_group }, | |
2549 | ||
2550 | { "v2 *,* queries sent", "txV2QueryGeneral", &stats->tx_query_new_general }, | |
2551 | { "v2 *,G queries sent", "txV2QueryGroup", &stats->tx_query_new_group }, | |
2552 | { "v2 S,G queries sent", "txV2QueryGroupSource", &stats->tx_query_new_groupsrc }, | |
2553 | { "v1 *,* queries sent", "txV1QueryGeneral", &stats->tx_query_old_general }, | |
2554 | { "v1 *,G queries sent", "txV1QueryGroup", &stats->tx_query_old_group }, | |
2555 | { "TX errors", "txErrors", &stats->tx_query_fail }, | |
2556 | ||
d2951219 DL |
2557 | { "RX dropped (checksum error)", "rxDropChecksum", &stats->rx_drop_csum }, |
2558 | { "RX dropped (invalid source)", "rxDropSrcAddr", &stats->rx_drop_srcaddr }, | |
2559 | { "RX dropped (invalid dest.)", "rxDropDstAddr", &stats->rx_drop_dstaddr }, | |
2560 | { "RX dropped (missing alert)", "rxDropRtrAlert", &stats->rx_drop_ra }, | |
2561 | { "RX dropped (malformed pkt.)", "rxDropMalformed", &stats->rx_drop_malformed }, | |
2562 | { "RX truncated reports", "rxTruncatedRep", &stats->rx_trunc_report }, | |
2563 | }; | |
2564 | /* clang-format on */ | |
2565 | ||
2566 | for (item = items; item < items + array_size(items); item++) { | |
2567 | if (js_if) | |
2568 | json_object_int_add(js_if, item->js_key, *item->val); | |
2569 | else | |
2570 | vty_out(vty, " %-30s %" PRIu64 "\n", item->text, | |
2571 | *item->val); | |
2572 | } | |
2573 | } | |
2574 | ||
2575 | static void gm_show_stats_vrf(struct vty *vty, struct vrf *vrf, | |
2576 | const char *ifname, json_object *js) | |
2577 | { | |
2578 | struct interface *ifp; | |
2579 | json_object *js_vrf; | |
2580 | ||
2581 | if (js) { | |
2582 | js_vrf = json_object_new_object(); | |
2583 | json_object_object_add(js, vrf->name, js_vrf); | |
2584 | } | |
2585 | ||
2586 | FOR_ALL_INTERFACES (vrf, ifp) { | |
2587 | struct pim_interface *pim_ifp; | |
2588 | struct gm_if *gm_ifp; | |
2589 | json_object *js_if = NULL; | |
2590 | ||
2591 | if (ifname && strcmp(ifp->name, ifname)) | |
2592 | continue; | |
2593 | ||
2594 | if (!ifp->info) | |
2595 | continue; | |
2596 | pim_ifp = ifp->info; | |
2597 | if (!pim_ifp->mld) | |
2598 | continue; | |
2599 | gm_ifp = pim_ifp->mld; | |
2600 | ||
2601 | if (js) { | |
2602 | js_if = json_object_new_object(); | |
2603 | json_object_object_add(js_vrf, ifp->name, js_if); | |
2604 | } else { | |
2605 | vty_out(vty, "Interface: %s\n", ifp->name); | |
2606 | } | |
2607 | gm_show_stats_one(vty, gm_ifp, js_if); | |
2608 | if (!js) | |
2609 | vty_out(vty, "\n"); | |
2610 | } | |
2611 | } | |
2612 | ||
2613 | DEFPY(gm_show_interface_stats, | |
2614 | gm_show_interface_stats_cmd, | |
2615 | "show ipv6 mld [vrf <VRF|all>$vrf_str] statistics [interface IFNAME] [json$json]", | |
2616 | SHOW_STR | |
2617 | IPV6_STR | |
2618 | MLD_STR | |
2619 | VRF_FULL_CMD_HELP_STR | |
2620 | "MLD statistics\n" | |
2621 | INTERFACE_STR | |
2622 | "Interface name\n" | |
2623 | JSON_STR) | |
2624 | { | |
2625 | int ret = CMD_SUCCESS; | |
2626 | struct vrf *vrf; | |
2627 | json_object *js = NULL; | |
2628 | ||
2629 | vrf = gm_cmd_vrf_lookup(vty, vrf_str, &ret); | |
2630 | if (ret != CMD_SUCCESS) | |
2631 | return ret; | |
2632 | ||
2633 | if (json) | |
2634 | js = json_object_new_object(); | |
2635 | ||
2636 | if (vrf) | |
2637 | gm_show_stats_vrf(vty, vrf, ifname, js); | |
2638 | else | |
2639 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) | |
2640 | gm_show_stats_vrf(vty, vrf, ifname, js); | |
2641 | return vty_json(vty, js); | |
2642 | } | |
2643 | ||
2644 | static void gm_show_joins_one(struct vty *vty, struct gm_if *gm_ifp, | |
2645 | const struct prefix_ipv6 *groups, | |
2646 | const struct prefix_ipv6 *sources, bool detail, | |
2647 | json_object *js_if) | |
2648 | { | |
2649 | struct gm_sg *sg, *sg_start; | |
2650 | json_object *js_group = NULL; | |
2651 | pim_addr js_grpaddr = PIMADDR_ANY; | |
2652 | struct gm_subscriber sub_ref = {}, *sub_untracked; | |
2653 | ||
2654 | if (groups) { | |
2655 | struct gm_sg sg_ref = {}; | |
2656 | ||
2657 | sg_ref.sgaddr.grp = pim_addr_from_prefix(groups); | |
2658 | sg_start = gm_sgs_find_gteq(gm_ifp->sgs, &sg_ref); | |
2659 | } else | |
2660 | sg_start = gm_sgs_first(gm_ifp->sgs); | |
2661 | ||
2662 | sub_ref.addr = gm_dummy_untracked; | |
2663 | sub_untracked = gm_subscribers_find(gm_ifp->subscribers, &sub_ref); | |
2664 | /* NB: sub_untracked may be NULL if no untracked joins exist */ | |
2665 | ||
2666 | frr_each_from (gm_sgs, gm_ifp->sgs, sg, sg_start) { | |
2667 | struct timeval *recent = NULL, *untracked = NULL; | |
2668 | json_object *js_src; | |
2669 | ||
2670 | if (groups) { | |
2671 | struct prefix grp_p; | |
2672 | ||
2673 | pim_addr_to_prefix(&grp_p, sg->sgaddr.grp); | |
2674 | if (!prefix_match(groups, &grp_p)) | |
2675 | break; | |
2676 | } | |
2677 | ||
2678 | if (sources) { | |
2679 | struct prefix src_p; | |
2680 | ||
2681 | pim_addr_to_prefix(&src_p, sg->sgaddr.src); | |
2682 | if (!prefix_match(sources, &src_p)) | |
2683 | continue; | |
2684 | } | |
2685 | ||
2686 | if (sg->most_recent) { | |
2687 | struct gm_packet_state *packet; | |
2688 | ||
2689 | packet = gm_packet_sg2state(sg->most_recent); | |
2690 | recent = &packet->received; | |
2691 | } | |
2692 | ||
2693 | if (sub_untracked) { | |
2694 | struct gm_packet_state *packet; | |
2695 | struct gm_packet_sg *item; | |
2696 | ||
2697 | item = gm_packet_sg_find(sg, GM_SUB_POS, sub_untracked); | |
2698 | if (item) { | |
2699 | packet = gm_packet_sg2state(item); | |
2700 | untracked = &packet->received; | |
2701 | } | |
2702 | } | |
2703 | ||
2704 | if (!js_if) { | |
2705 | FMT_NSTD_BEGIN; /* %.0p */ | |
2706 | vty_out(vty, | |
2707 | "%-30pPA %-30pPAs %-16s %10.0pTVMs %10.0pTVMs %10.0pTVMs\n", | |
2708 | &sg->sgaddr.grp, &sg->sgaddr.src, | |
2709 | gm_states[sg->state], recent, untracked, | |
2710 | &sg->created); | |
2711 | ||
2712 | if (!detail) | |
2713 | continue; | |
2714 | ||
2715 | struct gm_packet_sg *item; | |
2716 | struct gm_packet_state *packet; | |
2717 | ||
2718 | frr_each (gm_packet_sg_subs, sg->subs_positive, 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, "(JOIN)", | |
2725 | &packet->received); | |
2726 | } | |
2727 | frr_each (gm_packet_sg_subs, sg->subs_negative, item) { | |
2728 | packet = gm_packet_sg2state(item); | |
2729 | ||
2730 | if (packet->subscriber == sub_untracked) | |
2731 | continue; | |
2732 | vty_out(vty, " %-58pPA %-16s %10.0pTVMs\n", | |
2733 | &packet->subscriber->addr, "(PRUNE)", | |
2734 | &packet->received); | |
2735 | } | |
2736 | FMT_NSTD_END; /* %.0p */ | |
2737 | continue; | |
2738 | } | |
2739 | /* if (js_if) */ | |
2740 | ||
2741 | if (!js_group || pim_addr_cmp(js_grpaddr, sg->sgaddr.grp)) { | |
2742 | js_group = json_object_new_object(); | |
2743 | json_object_object_addf(js_if, js_group, "%pPA", | |
2744 | &sg->sgaddr.grp); | |
2745 | js_grpaddr = sg->sgaddr.grp; | |
2746 | } | |
2747 | ||
2748 | js_src = json_object_new_object(); | |
58971e15 | 2749 | json_object_object_addf(js_group, js_src, "%pPAs", |
d2951219 DL |
2750 | &sg->sgaddr.src); |
2751 | ||
2752 | json_object_string_add(js_src, "state", gm_states[sg->state]); | |
2753 | json_object_string_addf(js_src, "created", "%pTVMs", | |
2754 | &sg->created); | |
2755 | json_object_string_addf(js_src, "lastSeen", "%pTVMs", recent); | |
2756 | ||
2757 | if (untracked) | |
2758 | json_object_string_addf(js_src, "untrackedLastSeen", | |
2759 | "%pTVMs", untracked); | |
2760 | if (!detail) | |
2761 | continue; | |
2762 | ||
2763 | json_object *js_subs; | |
2764 | struct gm_packet_sg *item; | |
2765 | struct gm_packet_state *packet; | |
2766 | ||
2767 | js_subs = json_object_new_object(); | |
2768 | json_object_object_add(js_src, "joinedBy", js_subs); | |
2769 | frr_each (gm_packet_sg_subs, sg->subs_positive, item) { | |
2770 | packet = gm_packet_sg2state(item); | |
2771 | if (packet->subscriber == sub_untracked) | |
2772 | continue; | |
2773 | ||
2774 | json_object *js_sub; | |
2775 | ||
2776 | js_sub = json_object_new_object(); | |
2777 | json_object_object_addf(js_subs, js_sub, "%pPA", | |
2778 | &packet->subscriber->addr); | |
2779 | json_object_string_addf(js_sub, "lastSeen", "%pTVMs", | |
2780 | &packet->received); | |
2781 | } | |
2782 | ||
2783 | js_subs = json_object_new_object(); | |
2784 | json_object_object_add(js_src, "prunedBy", js_subs); | |
2785 | frr_each (gm_packet_sg_subs, sg->subs_negative, item) { | |
2786 | packet = gm_packet_sg2state(item); | |
2787 | if (packet->subscriber == sub_untracked) | |
2788 | continue; | |
2789 | ||
2790 | json_object *js_sub; | |
2791 | ||
2792 | js_sub = json_object_new_object(); | |
2793 | json_object_object_addf(js_subs, js_sub, "%pPA", | |
2794 | &packet->subscriber->addr); | |
2795 | json_object_string_addf(js_sub, "lastSeen", "%pTVMs", | |
2796 | &packet->received); | |
2797 | } | |
2798 | } | |
2799 | } | |
2800 | ||
2801 | static void gm_show_joins_vrf(struct vty *vty, struct vrf *vrf, | |
2802 | const char *ifname, | |
2803 | const struct prefix_ipv6 *groups, | |
2804 | const struct prefix_ipv6 *sources, bool detail, | |
2805 | json_object *js) | |
2806 | { | |
2807 | struct interface *ifp; | |
2808 | json_object *js_vrf; | |
2809 | ||
2810 | if (js) { | |
2811 | js_vrf = json_object_new_object(); | |
58971e15 | 2812 | json_object_string_add(js_vrf, "vrf", vrf->name); |
d2951219 DL |
2813 | json_object_object_add(js, vrf->name, js_vrf); |
2814 | } | |
2815 | ||
2816 | FOR_ALL_INTERFACES (vrf, ifp) { | |
2817 | struct pim_interface *pim_ifp; | |
2818 | struct gm_if *gm_ifp; | |
2819 | json_object *js_if = NULL; | |
2820 | ||
2821 | if (ifname && strcmp(ifp->name, ifname)) | |
2822 | continue; | |
2823 | ||
2824 | if (!ifp->info) | |
2825 | continue; | |
2826 | pim_ifp = ifp->info; | |
2827 | if (!pim_ifp->mld) | |
2828 | continue; | |
2829 | gm_ifp = pim_ifp->mld; | |
2830 | ||
2831 | if (js) { | |
2832 | js_if = json_object_new_object(); | |
2833 | json_object_object_add(js_vrf, ifp->name, js_if); | |
2834 | } | |
2835 | ||
2836 | if (!js && !ifname) | |
2837 | vty_out(vty, "\nOn interface %s:\n", ifp->name); | |
2838 | ||
2839 | gm_show_joins_one(vty, gm_ifp, groups, sources, detail, js_if); | |
2840 | } | |
2841 | } | |
2842 | ||
2843 | DEFPY(gm_show_interface_joins, | |
2844 | gm_show_interface_joins_cmd, | |
2845 | "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]", | |
2846 | SHOW_STR | |
2847 | IPV6_STR | |
2848 | MLD_STR | |
2849 | VRF_FULL_CMD_HELP_STR | |
2850 | "MLD joined groups & sources\n" | |
2851 | INTERFACE_STR | |
2852 | "Interface name\n" | |
2853 | "Limit output to group range\n" | |
2854 | "Show groups covered by this prefix\n" | |
2855 | "Limit output to source range\n" | |
2856 | "Show sources covered by this prefix\n" | |
2857 | "Show details, including tracked receivers\n" | |
2858 | JSON_STR) | |
2859 | { | |
2860 | int ret = CMD_SUCCESS; | |
2861 | struct vrf *vrf; | |
2862 | json_object *js = NULL; | |
2863 | ||
2864 | vrf = gm_cmd_vrf_lookup(vty, vrf_str, &ret); | |
2865 | if (ret != CMD_SUCCESS) | |
2866 | return ret; | |
2867 | ||
2868 | if (json) | |
2869 | js = json_object_new_object(); | |
2870 | else | |
2871 | vty_out(vty, "%-30s %-30s %-16s %10s %10s %10s\n", "Group", | |
2872 | "Source", "State", "LastSeen", "NonTrkSeen", "Created"); | |
2873 | ||
2874 | if (vrf) | |
2875 | gm_show_joins_vrf(vty, vrf, ifname, groups, sources, !!detail, | |
2876 | js); | |
2877 | else | |
2878 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) | |
2879 | gm_show_joins_vrf(vty, vrf, ifname, groups, sources, | |
2880 | !!detail, js); | |
2881 | return vty_json(vty, js); | |
2882 | } | |
2883 | ||
cdc1b770 SG |
2884 | static void gm_show_groups(struct vty *vty, struct vrf *vrf, bool uj) |
2885 | { | |
2886 | struct interface *ifp; | |
2887 | struct ttable *tt = NULL; | |
2888 | char *table; | |
2889 | json_object *json = NULL; | |
2890 | json_object *json_iface = NULL; | |
2891 | json_object *json_group = NULL; | |
2892 | json_object *json_groups = NULL; | |
2893 | struct pim_instance *pim = vrf->info; | |
2894 | ||
2895 | if (uj) { | |
2896 | json = json_object_new_object(); | |
2897 | json_object_int_add(json, "totalGroups", pim->gm_group_count); | |
2898 | json_object_int_add(json, "watermarkLimit", | |
2899 | pim->gm_watermark_limit); | |
2900 | } else { | |
2901 | /* Prepare table. */ | |
2902 | tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]); | |
2903 | ttable_add_row(tt, "Interface|Group|Version|Uptime"); | |
2904 | tt->style.cell.rpad = 2; | |
2905 | tt->style.corner = '+'; | |
2906 | ttable_restyle(tt); | |
2907 | ||
2908 | vty_out(vty, "Total MLD groups: %u\n", pim->gm_group_count); | |
2909 | vty_out(vty, "Watermark warn limit(%s): %u\n", | |
2910 | pim->gm_watermark_limit ? "Set" : "Not Set", | |
2911 | pim->gm_watermark_limit); | |
2912 | } | |
2913 | ||
2914 | /* scan interfaces */ | |
2915 | FOR_ALL_INTERFACES (vrf, ifp) { | |
2916 | ||
2917 | struct pim_interface *pim_ifp = ifp->info; | |
2918 | struct gm_if *gm_ifp; | |
2919 | struct gm_sg *sg; | |
2920 | ||
2921 | if (!pim_ifp) | |
2922 | continue; | |
2923 | ||
2924 | gm_ifp = pim_ifp->mld; | |
2925 | if (!gm_ifp) | |
2926 | continue; | |
2927 | ||
2928 | /* scan mld groups */ | |
2929 | frr_each (gm_sgs, gm_ifp->sgs, sg) { | |
2930 | ||
2931 | if (uj) { | |
2932 | json_object_object_get_ex(json, ifp->name, | |
2933 | &json_iface); | |
2934 | ||
2935 | if (!json_iface) { | |
2936 | json_iface = json_object_new_object(); | |
2937 | json_object_pim_ifp_add(json_iface, | |
2938 | ifp); | |
2939 | json_object_object_add(json, ifp->name, | |
2940 | json_iface); | |
2941 | json_groups = json_object_new_array(); | |
2942 | json_object_object_add(json_iface, | |
2943 | "groups", | |
2944 | json_groups); | |
2945 | } | |
2946 | ||
2947 | json_group = json_object_new_object(); | |
2948 | json_object_string_addf(json_group, "group", | |
2949 | "%pPAs", | |
2950 | &sg->sgaddr.grp); | |
2951 | ||
2952 | json_object_int_add(json_group, "version", | |
2953 | pim_ifp->mld_version); | |
2954 | json_object_string_addf(json_group, "uptime", | |
2955 | "%pTVMs", &sg->created); | |
2956 | json_object_array_add(json_groups, json_group); | |
2957 | } else { | |
2958 | ttable_add_row(tt, "%s|%pPAs|%d|%pTVMs", | |
2959 | ifp->name, &sg->sgaddr.grp, | |
2960 | pim_ifp->mld_version, | |
2961 | &sg->created); | |
2962 | } | |
2963 | } /* scan gm groups */ | |
2964 | } /* scan interfaces */ | |
2965 | ||
2966 | if (uj) | |
2967 | vty_json(vty, json); | |
2968 | else { | |
2969 | /* Dump the generated table. */ | |
2970 | table = ttable_dump(tt, "\n"); | |
2971 | vty_out(vty, "%s\n", table); | |
2972 | XFREE(MTYPE_TMP, table); | |
2973 | ttable_del(tt); | |
2974 | } | |
2975 | } | |
2976 | ||
2977 | DEFPY(gm_show_mld_groups, | |
2978 | gm_show_mld_groups_cmd, | |
2979 | "show ipv6 mld [vrf <VRF|all>$vrf_str] groups [json$json]", | |
2980 | SHOW_STR | |
2981 | IPV6_STR | |
2982 | MLD_STR | |
2983 | VRF_FULL_CMD_HELP_STR | |
2984 | MLD_GROUP_STR | |
2985 | JSON_STR) | |
2986 | { | |
2987 | int ret = CMD_SUCCESS; | |
2988 | struct vrf *vrf; | |
2989 | ||
2990 | vrf = gm_cmd_vrf_lookup(vty, vrf_str, &ret); | |
2991 | if (ret != CMD_SUCCESS) | |
2992 | return ret; | |
2993 | ||
2994 | if (vrf) | |
2995 | gm_show_groups(vty, vrf, !!json); | |
2996 | else | |
2997 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) | |
2998 | gm_show_groups(vty, vrf, !!json); | |
2999 | ||
3000 | return CMD_SUCCESS; | |
3001 | } | |
3002 | ||
5e5034b0 DL |
3003 | DEFPY(gm_debug_show, |
3004 | gm_debug_show_cmd, | |
3005 | "debug show mld interface IFNAME", | |
3006 | DEBUG_STR | |
3007 | SHOW_STR | |
a0dfca37 | 3008 | MLD_STR |
5e5034b0 | 3009 | INTERFACE_STR |
a0dfca37 | 3010 | "interface name\n") |
5e5034b0 DL |
3011 | { |
3012 | struct interface *ifp; | |
3013 | struct pim_interface *pim_ifp; | |
3014 | struct gm_if *gm_ifp; | |
3015 | ||
3016 | ifp = if_lookup_by_name(ifname, VRF_DEFAULT); | |
3017 | if (!ifp) { | |
3018 | vty_out(vty, "%% no such interface: %pSQq\n", ifname); | |
3019 | return CMD_WARNING; | |
3020 | } | |
3021 | ||
3022 | pim_ifp = ifp->info; | |
3023 | if (!pim_ifp) { | |
3024 | vty_out(vty, "%% no PIM state for interface %pSQq\n", ifname); | |
3025 | return CMD_WARNING; | |
3026 | } | |
3027 | ||
3028 | gm_ifp = pim_ifp->mld; | |
3029 | if (!gm_ifp) { | |
3030 | vty_out(vty, "%% no MLD state for interface %pSQq\n", ifname); | |
3031 | return CMD_WARNING; | |
3032 | } | |
3033 | ||
3034 | vty_out(vty, "querier: %pPA\n", &gm_ifp->querier); | |
3035 | vty_out(vty, "ll_lowest: %pPA\n\n", &pim_ifp->ll_lowest); | |
3036 | vty_out(vty, "t_query: %pTHD\n", gm_ifp->t_query); | |
3037 | vty_out(vty, "t_other_querier: %pTHD\n", gm_ifp->t_other_querier); | |
5e5034b0 DL |
3038 | vty_out(vty, "t_expire: %pTHD\n", gm_ifp->t_expire); |
3039 | ||
3040 | vty_out(vty, "\nn_pending: %u\n", gm_ifp->n_pending); | |
3041 | for (size_t i = 0; i < gm_ifp->n_pending; i++) { | |
3042 | int64_t query, expiry; | |
3043 | ||
3044 | query = monotime_since(&gm_ifp->pending[i].query, NULL); | |
3045 | expiry = monotime_until(&gm_ifp->pending[i].expiry, NULL); | |
3046 | ||
3047 | vty_out(vty, "[%zu]: query %"PRId64"ms ago, expiry in %"PRId64"ms\n", | |
3048 | i, query / 1000, expiry / 1000); | |
3049 | } | |
3050 | ||
3051 | struct gm_sg *sg; | |
3052 | struct gm_packet_state *pkt; | |
3053 | struct gm_packet_sg *item; | |
3054 | struct gm_subscriber *subscriber; | |
3055 | ||
3056 | vty_out(vty, "\n%zu S,G entries:\n", gm_sgs_count(gm_ifp->sgs)); | |
3057 | frr_each (gm_sgs, gm_ifp->sgs, sg) { | |
3058 | vty_out(vty, "\t%pSG t_expire=%pTHD\n", &sg->sgaddr, | |
3059 | sg->t_sg_expire); | |
3060 | ||
3061 | vty_out(vty, "\t @pos:%zu\n", | |
3062 | gm_packet_sg_subs_count(sg->subs_positive)); | |
3063 | frr_each (gm_packet_sg_subs, sg->subs_positive, item) { | |
3064 | pkt = gm_packet_sg2state(item); | |
3065 | ||
3066 | vty_out(vty, "\t\t+%s%s [%pPAs %p] %p+%u\n", | |
3067 | item->is_src ? "S" : "", | |
3068 | item->is_excl ? "E" : "", | |
3069 | &pkt->subscriber->addr, pkt->subscriber, pkt, | |
3070 | item->offset); | |
3071 | ||
3072 | assert(item->sg == sg); | |
3073 | } | |
3074 | vty_out(vty, "\t @neg:%zu\n", | |
3075 | gm_packet_sg_subs_count(sg->subs_negative)); | |
3076 | frr_each (gm_packet_sg_subs, sg->subs_negative, item) { | |
3077 | pkt = gm_packet_sg2state(item); | |
3078 | ||
3079 | vty_out(vty, "\t\t-%s%s [%pPAs %p] %p+%u\n", | |
3080 | item->is_src ? "S" : "", | |
3081 | item->is_excl ? "E" : "", | |
3082 | &pkt->subscriber->addr, pkt->subscriber, pkt, | |
3083 | item->offset); | |
3084 | ||
3085 | assert(item->sg == sg); | |
3086 | } | |
3087 | } | |
3088 | ||
3089 | vty_out(vty, "\n%zu subscribers:\n", | |
3090 | gm_subscribers_count(gm_ifp->subscribers)); | |
3091 | frr_each (gm_subscribers, gm_ifp->subscribers, subscriber) { | |
3092 | vty_out(vty, "\t%pPA %p %zu packets\n", &subscriber->addr, | |
3093 | subscriber, gm_packets_count(subscriber->packets)); | |
3094 | ||
3095 | frr_each (gm_packets, subscriber->packets, pkt) { | |
3096 | vty_out(vty, "\t\t%p %.3fs ago %u of %u items active\n", | |
3097 | pkt, | |
3098 | monotime_since(&pkt->received, NULL) * | |
3099 | 0.000001f, | |
3100 | pkt->n_active, pkt->n_sg); | |
3101 | ||
3102 | for (size_t i = 0; i < pkt->n_sg; i++) { | |
3103 | item = pkt->items + i; | |
3104 | ||
3105 | vty_out(vty, "\t\t[%zu]", i); | |
3106 | ||
3107 | if (!item->sg) { | |
3108 | vty_out(vty, " inactive\n"); | |
3109 | continue; | |
3110 | } | |
3111 | ||
3112 | vty_out(vty, " %s%s %pSG nE=%u\n", | |
3113 | item->is_src ? "S" : "", | |
3114 | item->is_excl ? "E" : "", | |
3115 | &item->sg->sgaddr, item->n_exclude); | |
3116 | } | |
3117 | } | |
3118 | } | |
3119 | ||
3120 | return CMD_SUCCESS; | |
3121 | } | |
3122 | ||
3123 | DEFPY(gm_debug_iface_cfg, | |
3124 | gm_debug_iface_cfg_cmd, | |
3125 | "debug ipv6 mld {" | |
3126 | "robustness (0-7)|" | |
3127 | "query-max-response-time (1-8387584)" | |
3128 | "}", | |
3129 | DEBUG_STR | |
3130 | IPV6_STR | |
3131 | "Multicast Listener Discovery\n" | |
3132 | "QRV\nQRV\n" | |
3133 | "maxresp\nmaxresp\n") | |
3134 | { | |
3135 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
3136 | struct pim_interface *pim_ifp; | |
3137 | struct gm_if *gm_ifp; | |
3138 | bool changed = false; | |
3139 | ||
3140 | pim_ifp = ifp->info; | |
3141 | if (!pim_ifp) { | |
3142 | vty_out(vty, "%% no PIM state for interface %pSQq\n", | |
3143 | ifp->name); | |
3144 | return CMD_WARNING; | |
3145 | } | |
3146 | gm_ifp = pim_ifp->mld; | |
3147 | if (!gm_ifp) { | |
3148 | vty_out(vty, "%% no MLD state for interface %pSQq\n", | |
3149 | ifp->name); | |
3150 | return CMD_WARNING; | |
3151 | } | |
3152 | ||
3153 | if (robustness_str && gm_ifp->cur_qrv != robustness) { | |
3154 | gm_ifp->cur_qrv = robustness; | |
3155 | changed = true; | |
3156 | } | |
3157 | if (query_max_response_time_str && | |
3158 | gm_ifp->cur_max_resp != (unsigned int)query_max_response_time) { | |
3159 | gm_ifp->cur_max_resp = query_max_response_time; | |
3160 | changed = true; | |
3161 | } | |
3162 | ||
3163 | if (changed) { | |
3164 | vty_out(vty, "%% MLD querier config changed, bumping\n"); | |
3165 | gm_bump_querier(gm_ifp); | |
3166 | } | |
3167 | return CMD_SUCCESS; | |
3168 | } | |
3169 | ||
3170 | void gm_cli_init(void); | |
3171 | ||
3172 | void gm_cli_init(void) | |
3173 | { | |
d2951219 DL |
3174 | install_element(VIEW_NODE, &gm_show_interface_cmd); |
3175 | install_element(VIEW_NODE, &gm_show_interface_stats_cmd); | |
3176 | install_element(VIEW_NODE, &gm_show_interface_joins_cmd); | |
cdc1b770 | 3177 | install_element(VIEW_NODE, &gm_show_mld_groups_cmd); |
d2951219 | 3178 | |
5e5034b0 DL |
3179 | install_element(VIEW_NODE, &gm_debug_show_cmd); |
3180 | install_element(INTERFACE_NODE, &gm_debug_iface_cfg_cmd); | |
3181 | } |