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Commit | Line | Data |
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12e41d03 | 1 | /* |
896014f4 DL |
2 | * PIM for Quagga |
3 | * Copyright (C) 2008 Everton da Silva Marques | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; see the file COPYING; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
12e41d03 DL |
19 | |
20 | #include <zebra.h> | |
21 | ||
22 | #include "linklist.h" | |
23 | #include "thread.h" | |
24 | #include "memory.h" | |
744d91b3 | 25 | #include "if.h" |
c8507a16 | 26 | #include "vrf.h" |
a625e937 DS |
27 | #include "hash.h" |
28 | #include "jhash.h" | |
df94f9a9 | 29 | #include "prefix.h" |
12e41d03 DL |
30 | |
31 | #include "pimd.h" | |
32 | #include "pim_str.h" | |
33 | #include "pim_iface.h" | |
34 | #include "pim_ifchannel.h" | |
35 | #include "pim_zebra.h" | |
36 | #include "pim_time.h" | |
37 | #include "pim_msg.h" | |
38 | #include "pim_pim.h" | |
39 | #include "pim_join.h" | |
40 | #include "pim_rpf.h" | |
41 | #include "pim_macro.h" | |
dfbbce1d | 42 | #include "pim_oil.h" |
4a40c37a | 43 | #include "pim_upstream.h" |
15a5dafe | 44 | #include "pim_ssm.h" |
c206937b | 45 | #include "pim_rp.h" |
22c35834 | 46 | #include "pim_mlag.h" |
12e41d03 | 47 | |
996c9314 | 48 | RB_GENERATE(pim_ifchannel_rb, pim_ifchannel, pim_ifp_rb, pim_ifchannel_compare); |
ad7b74c4 DS |
49 | |
50 | int pim_ifchannel_compare(const struct pim_ifchannel *ch1, | |
51 | const struct pim_ifchannel *ch2) | |
3fdfd943 | 52 | { |
d62a17ae | 53 | struct pim_interface *pim_ifp1; |
54 | struct pim_interface *pim_ifp2; | |
3fdfd943 | 55 | |
d62a17ae | 56 | pim_ifp1 = ch1->interface->info; |
57 | pim_ifp2 = ch2->interface->info; | |
3fdfd943 | 58 | |
d62a17ae | 59 | if (pim_ifp1->mroute_vif_index < pim_ifp2->mroute_vif_index) |
60 | return -1; | |
3fdfd943 | 61 | |
d62a17ae | 62 | if (pim_ifp1->mroute_vif_index > pim_ifp2->mroute_vif_index) |
63 | return 1; | |
3fdfd943 | 64 | |
62f59b58 | 65 | return pim_sgaddr_cmp(ch1->sg, ch2->sg); |
3fdfd943 DS |
66 | } |
67 | ||
1a10fc74 DS |
68 | /* |
69 | * A (*,G) or a (*,*) is going away | |
70 | * remove the parent pointer from | |
71 | * those pointing at us | |
72 | */ | |
d62a17ae | 73 | static void pim_ifchannel_remove_children(struct pim_ifchannel *ch) |
1a10fc74 | 74 | { |
d62a17ae | 75 | struct pim_ifchannel *child; |
1a10fc74 | 76 | |
d62a17ae | 77 | if (!ch->sources) |
78 | return; | |
1a10fc74 | 79 | |
d62a17ae | 80 | while (!list_isempty(ch->sources)) { |
81 | child = listnode_head(ch->sources); | |
82 | child->parent = NULL; | |
83 | listnode_delete(ch->sources, child); | |
84 | } | |
1a10fc74 DS |
85 | } |
86 | ||
87 | /* | |
88 | * A (*,G) or a (*,*) is being created | |
89 | * find all the children that would point | |
90 | * at us. | |
91 | */ | |
d62a17ae | 92 | static void pim_ifchannel_find_new_children(struct pim_ifchannel *ch) |
1a10fc74 | 93 | { |
d62a17ae | 94 | struct pim_interface *pim_ifp = ch->interface->info; |
95 | struct pim_ifchannel *child; | |
d62a17ae | 96 | |
97 | // Basic Sanity that we are not being silly | |
2a27f13b | 98 | if (!pim_addr_is_any(ch->sg.src) && !pim_addr_is_any(ch->sg.grp)) |
d62a17ae | 99 | return; |
100 | ||
2a27f13b | 101 | if (pim_addr_is_any(ch->sg.src) && pim_addr_is_any(ch->sg.grp)) |
d62a17ae | 102 | return; |
103 | ||
a2addae8 | 104 | RB_FOREACH (child, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
2a27f13b | 105 | if (!pim_addr_is_any(ch->sg.grp) && |
032a7412 | 106 | !pim_addr_cmp(child->sg.grp, ch->sg.grp) && (child != ch)) { |
d62a17ae | 107 | child->parent = ch; |
108 | listnode_add_sort(ch->sources, child); | |
109 | } | |
3fdfd943 | 110 | } |
1a10fc74 DS |
111 | } |
112 | ||
12e41d03 DL |
113 | void pim_ifchannel_delete(struct pim_ifchannel *ch) |
114 | { | |
d62a17ae | 115 | struct pim_interface *pim_ifp; |
0f31a82a | 116 | struct pim_upstream *up; |
d62a17ae | 117 | |
118 | pim_ifp = ch->interface->info; | |
119 | ||
b900ad16 AK |
120 | if (PIM_DEBUG_PIM_TRACE) |
121 | zlog_debug("%s: ifchannel entry %s(%s) del start", __func__, | |
122 | ch->sg_str, ch->interface->name); | |
123 | ||
22c35834 SK |
124 | if (PIM_I_am_DualActive(pim_ifp)) { |
125 | if (PIM_DEBUG_MLAG) | |
126 | zlog_debug( | |
3efd0893 | 127 | "%s: if-chnanel-%s is deleted from a Dual active Interface", |
22c35834 SK |
128 | __func__, ch->sg_str); |
129 | /* Post Delete only if it is the last Dual-active Interface */ | |
130 | if (ch->upstream->dualactive_ifchannel_count == 1) { | |
131 | pim_mlag_up_local_del(pim_ifp->pim, ch->upstream); | |
132 | PIM_UPSTREAM_FLAG_UNSET_MLAG_INTERFACE( | |
133 | ch->upstream->flags); | |
134 | } | |
135 | ch->upstream->dualactive_ifchannel_count--; | |
136 | } | |
137 | ||
d62a17ae | 138 | if (ch->upstream->channel_oil) { |
139 | uint32_t mask = PIM_OIF_FLAG_PROTO_PIM; | |
140 | if (ch->upstream->flags & PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) | |
71056a69 | 141 | mask |= PIM_OIF_FLAG_PROTO_IGMP; |
d62a17ae | 142 | |
2164ed5d DS |
143 | /* |
144 | * A S,G RPT channel can have an empty oil, we also | |
145 | * need to take into account the fact that a ifchannel | |
146 | * might have been suppressing a *,G ifchannel from | |
147 | * being inherited. So let's figure out what | |
148 | * needs to be done here | |
149 | */ | |
2a27f13b DL |
150 | if (!pim_addr_is_any(ch->sg.src) && |
151 | pim_upstream_evaluate_join_desired_interface( | |
152 | ch->upstream, ch, ch->parent)) | |
2164ed5d | 153 | pim_channel_add_oif(ch->upstream->channel_oil, |
71056a69 | 154 | ch->interface, |
1b249e70 AK |
155 | PIM_OIF_FLAG_PROTO_STAR, |
156 | __func__); | |
71056a69 AK |
157 | |
158 | pim_channel_del_oif(ch->upstream->channel_oil, | |
1b249e70 | 159 | ch->interface, mask, __func__); |
d62a17ae | 160 | /* |
161 | * Do we have any S,G's that are inheriting? | |
162 | * Nuke from on high too. | |
163 | */ | |
164 | if (ch->upstream->sources) { | |
165 | struct pim_upstream *child; | |
166 | struct listnode *up_node; | |
167 | ||
168 | for (ALL_LIST_ELEMENTS_RO(ch->upstream->sources, | |
169 | up_node, child)) | |
1537a668 AK |
170 | pim_channel_del_inherited_oif( |
171 | child->channel_oil, | |
172 | ch->interface, | |
173 | __func__); | |
d62a17ae | 174 | } |
175 | } | |
176 | ||
177 | /* | |
178 | * When this channel is removed | |
179 | * we need to find all our children | |
180 | * and make sure our pointers are fixed | |
181 | */ | |
182 | pim_ifchannel_remove_children(ch); | |
183 | ||
184 | if (ch->sources) | |
6a154c88 | 185 | list_delete(&ch->sources); |
d62a17ae | 186 | |
187 | listnode_delete(ch->upstream->ifchannels, ch); | |
188 | ||
0f31a82a | 189 | up = ch->upstream; |
d62a17ae | 190 | |
191 | /* upstream is common across ifchannels, check if upstream's | |
192 | ifchannel list is empty before deleting upstream_del | |
193 | ref count will take care of it. | |
194 | */ | |
e83f3b31 | 195 | if (ch->upstream->ref_count > 0) |
0f31a82a | 196 | up = pim_upstream_del(pim_ifp->pim, ch->upstream, __func__); |
e83f3b31 | 197 | |
889a75be DS |
198 | else { |
199 | if (PIM_DEBUG_PIM_TRACE) | |
5e81f5dd | 200 | zlog_debug( |
3efd0893 | 201 | "%s: Avoiding deletion of upstream with ref_count %d from ifchannel(%s): %s", |
5e81f5dd DS |
202 | __func__, ch->upstream->ref_count, |
203 | ch->interface->name, ch->sg_str); | |
889a75be | 204 | } |
e83f3b31 | 205 | |
d62a17ae | 206 | ch->upstream = NULL; |
207 | ||
208 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
209 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
210 | THREAD_OFF(ch->t_ifassert_timer); | |
211 | ||
212 | if (ch->parent) { | |
213 | listnode_delete(ch->parent->sources, ch); | |
214 | ch->parent = NULL; | |
215 | } | |
ad7b74c4 DS |
216 | |
217 | RB_REMOVE(pim_ifchannel_rb, &pim_ifp->ifchannel_rb, ch); | |
d62a17ae | 218 | |
219 | if (PIM_DEBUG_PIM_TRACE) | |
6d7c0df5 DS |
220 | zlog_debug("%s: ifchannel entry %s(%s) is deleted ", __func__, |
221 | ch->sg_str, ch->interface->name); | |
d62a17ae | 222 | |
7692c5ae | 223 | XFREE(MTYPE_PIM_IFCHANNEL, ch); |
0f31a82a AK |
224 | |
225 | if (up) | |
226 | pim_upstream_update_join_desired(pim_ifp->pim, up); | |
12e41d03 | 227 | } |
cb24fec4 | 228 | |
d62a17ae | 229 | void pim_ifchannel_delete_all(struct interface *ifp) |
cb24fec4 | 230 | { |
d62a17ae | 231 | struct pim_interface *pim_ifp; |
ad7b74c4 | 232 | struct pim_ifchannel *ch; |
d62a17ae | 233 | |
234 | pim_ifp = ifp->info; | |
235 | if (!pim_ifp) | |
236 | return; | |
237 | ||
55cd0f61 DS |
238 | while (!RB_EMPTY(pim_ifchannel_rb, &pim_ifp->ifchannel_rb)) { |
239 | ch = RB_ROOT(pim_ifchannel_rb, &pim_ifp->ifchannel_rb); | |
240 | ||
15569c58 | 241 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_NOINFO); |
ad7b74c4 | 242 | pim_ifchannel_delete(ch); |
d62a17ae | 243 | } |
cb24fec4 | 244 | } |
d62a17ae | 245 | |
99f9518b | 246 | void delete_on_noinfo(struct pim_ifchannel *ch) |
12e41d03 | 247 | { |
d62a17ae | 248 | if (ch->local_ifmembership == PIM_IFMEMBERSHIP_NOINFO |
249 | && ch->ifjoin_state == PIM_IFJOIN_NOINFO | |
250 | && ch->t_ifjoin_expiry_timer == NULL) | |
251 | pim_ifchannel_delete(ch); | |
12e41d03 DL |
252 | } |
253 | ||
d62a17ae | 254 | void pim_ifchannel_ifjoin_switch(const char *caller, struct pim_ifchannel *ch, |
12e41d03 DL |
255 | enum pim_ifjoin_state new_state) |
256 | { | |
d62a17ae | 257 | enum pim_ifjoin_state old_state = ch->ifjoin_state; |
9b29ea95 | 258 | struct pim_interface *pim_ifp = ch->interface->info; |
a53a9b3e | 259 | struct pim_ifchannel *child_ch; |
d62a17ae | 260 | |
261 | if (PIM_DEBUG_PIM_EVENTS) | |
262 | zlog_debug( | |
263 | "PIM_IFCHANNEL(%s): %s is switching from %s to %s", | |
264 | ch->interface->name, ch->sg_str, | |
265 | pim_ifchannel_ifjoin_name(ch->ifjoin_state, ch->flags), | |
266 | pim_ifchannel_ifjoin_name(new_state, 0)); | |
267 | ||
268 | ||
269 | if (old_state == new_state) { | |
270 | if (PIM_DEBUG_PIM_EVENTS) { | |
271 | zlog_debug( | |
272 | "%s calledby %s: non-transition on state %d (%s)", | |
5e81f5dd | 273 | __func__, caller, new_state, |
d62a17ae | 274 | pim_ifchannel_ifjoin_name(new_state, 0)); |
6578dfa3 | 275 | } |
d62a17ae | 276 | return; |
277 | } | |
278 | ||
279 | ch->ifjoin_state = new_state; | |
280 | ||
2a27f13b | 281 | if (pim_addr_is_any(ch->sg.src)) { |
d62a17ae | 282 | struct pim_upstream *up = ch->upstream; |
283 | struct pim_upstream *child; | |
284 | struct listnode *up_node; | |
285 | ||
286 | if (up) { | |
287 | if (ch->ifjoin_state == PIM_IFJOIN_NOINFO) { | |
288 | for (ALL_LIST_ELEMENTS_RO(up->sources, up_node, | |
289 | child)) { | |
290 | struct channel_oil *c_oil = | |
291 | child->channel_oil; | |
d62a17ae | 292 | |
293 | if (PIM_DEBUG_PIM_TRACE) | |
294 | zlog_debug( | |
295 | "%s %s: Prune(S,G)=%s from %s", | |
5e81f5dd | 296 | __FILE__, __func__, |
d62a17ae | 297 | child->sg_str, |
298 | up->sg_str); | |
299 | if (!c_oil) | |
300 | continue; | |
301 | ||
d62a17ae | 302 | /* |
303 | * If the S,G has no if channel and the | |
304 | * c_oil still | |
305 | * has output here then the *,G was | |
306 | * supplying the implied | |
307 | * if channel. So remove it. | |
d62a17ae | 308 | */ |
a88e628d DS |
309 | if (c_oil->oil.mfcc_ttls |
310 | [pim_ifp->mroute_vif_index]) | |
1537a668 | 311 | pim_channel_del_inherited_oif( |
d62a17ae | 312 | c_oil, ch->interface, |
1b249e70 | 313 | __func__); |
d62a17ae | 314 | } |
315 | } | |
316 | if (ch->ifjoin_state == PIM_IFJOIN_JOIN) { | |
317 | for (ALL_LIST_ELEMENTS_RO(up->sources, up_node, | |
318 | child)) { | |
319 | if (PIM_DEBUG_PIM_TRACE) | |
320 | zlog_debug( | |
321 | "%s %s: Join(S,G)=%s from %s", | |
5e81f5dd | 322 | __FILE__, __func__, |
d62a17ae | 323 | child->sg_str, |
324 | up->sg_str); | |
325 | ||
a53a9b3e AK |
326 | /* check if the channel can be |
327 | * inherited into the SG's OIL | |
328 | */ | |
329 | child_ch = pim_ifchannel_find( | |
330 | ch->interface, | |
331 | &child->sg); | |
332 | if (pim_upstream_eval_inherit_if( | |
333 | child, child_ch, ch)) { | |
d62a17ae | 334 | pim_channel_add_oif( |
335 | child->channel_oil, | |
336 | ch->interface, | |
1b249e70 AK |
337 | PIM_OIF_FLAG_PROTO_STAR, |
338 | __func__); | |
d62a17ae | 339 | pim_upstream_update_join_desired( |
9b29ea95 | 340 | pim_ifp->pim, child); |
d62a17ae | 341 | } |
342 | } | |
343 | } | |
6578dfa3 | 344 | } |
6578dfa3 | 345 | } |
d62a17ae | 346 | /* Transition to/from NOINFO ? */ |
347 | if ((old_state == PIM_IFJOIN_NOINFO) | |
348 | || (new_state == PIM_IFJOIN_NOINFO)) { | |
349 | ||
350 | if (PIM_DEBUG_PIM_EVENTS) { | |
351 | zlog_debug("PIM_IFCHANNEL_%s: (S,G)=%s on interface %s", | |
352 | ((new_state == PIM_IFJOIN_NOINFO) ? "DOWN" | |
353 | : "UP"), | |
354 | ch->sg_str, ch->interface->name); | |
355 | } | |
356 | ||
357 | /* | |
358 | Record uptime of state transition to/from NOINFO | |
359 | */ | |
360 | ch->ifjoin_creation = pim_time_monotonic_sec(); | |
361 | ||
9b29ea95 | 362 | pim_upstream_update_join_desired(pim_ifp->pim, ch->upstream); |
d62a17ae | 363 | pim_ifchannel_update_could_assert(ch); |
364 | pim_ifchannel_update_assert_tracking_desired(ch); | |
365 | } | |
12e41d03 DL |
366 | } |
367 | ||
d1e77284 | 368 | const char *pim_ifchannel_ifjoin_name(enum pim_ifjoin_state ifjoin_state, |
d62a17ae | 369 | int flags) |
12e41d03 | 370 | { |
d62a17ae | 371 | switch (ifjoin_state) { |
372 | case PIM_IFJOIN_NOINFO: | |
373 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) | |
c206937b | 374 | return "SGRpt(NI)"; |
d62a17ae | 375 | else |
376 | return "NOINFO"; | |
d62a17ae | 377 | case PIM_IFJOIN_JOIN: |
378 | return "JOIN"; | |
d62a17ae | 379 | case PIM_IFJOIN_PRUNE: |
c206937b DS |
380 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
381 | return "SGRpt(P)"; | |
382 | else | |
383 | return "PRUNE"; | |
d62a17ae | 384 | case PIM_IFJOIN_PRUNE_PENDING: |
c206937b DS |
385 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
386 | return "SGRpt(PP)"; | |
387 | else | |
388 | return "PRUNEP"; | |
d62a17ae | 389 | case PIM_IFJOIN_PRUNE_TMP: |
c206937b DS |
390 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
391 | return "SGRpt(P')"; | |
392 | else | |
393 | return "PRUNET"; | |
d62a17ae | 394 | case PIM_IFJOIN_PRUNE_PENDING_TMP: |
c206937b DS |
395 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
396 | return "SGRpt(PP')"; | |
397 | else | |
398 | return "PRUNEPT"; | |
d62a17ae | 399 | } |
400 | ||
401 | return "ifjoin_bad_state"; | |
12e41d03 DL |
402 | } |
403 | ||
404 | const char *pim_ifchannel_ifassert_name(enum pim_ifassert_state ifassert_state) | |
405 | { | |
d62a17ae | 406 | switch (ifassert_state) { |
407 | case PIM_IFASSERT_NOINFO: | |
408 | return "NOINFO"; | |
409 | case PIM_IFASSERT_I_AM_WINNER: | |
410 | return "WINNER"; | |
411 | case PIM_IFASSERT_I_AM_LOSER: | |
412 | return "LOSER"; | |
413 | } | |
12e41d03 | 414 | |
d62a17ae | 415 | return "ifassert_bad_state"; |
12e41d03 DL |
416 | } |
417 | ||
418 | /* | |
419 | RFC 4601: 4.6.5. Assert State Macros | |
420 | ||
421 | AssertWinner(S,G,I) defaults to NULL and AssertWinnerMetric(S,G,I) | |
422 | defaults to Infinity when in the NoInfo state. | |
423 | */ | |
424 | void reset_ifassert_state(struct pim_ifchannel *ch) | |
425 | { | |
d62a17ae | 426 | THREAD_OFF(ch->t_ifassert_timer); |
12e41d03 | 427 | |
2b844385 | 428 | pim_ifassert_winner_set(ch, PIM_IFASSERT_NOINFO, PIMADDR_ANY, |
d17612dd | 429 | router->infinite_assert_metric); |
12e41d03 DL |
430 | } |
431 | ||
6fff2cc6 | 432 | struct pim_ifchannel *pim_ifchannel_find(struct interface *ifp, pim_sgaddr *sg) |
12e41d03 | 433 | { |
d62a17ae | 434 | struct pim_interface *pim_ifp; |
435 | struct pim_ifchannel *ch; | |
436 | struct pim_ifchannel lookup; | |
12e41d03 | 437 | |
d62a17ae | 438 | pim_ifp = ifp->info; |
12e41d03 | 439 | |
d62a17ae | 440 | if (!pim_ifp) { |
98a81d2b DL |
441 | zlog_warn("%s: (S,G)=%pSG: multicast not enabled on interface %s", |
442 | __func__, sg, ifp->name); | |
d62a17ae | 443 | return NULL; |
444 | } | |
12e41d03 | 445 | |
d62a17ae | 446 | lookup.sg = *sg; |
ad7b74c4 DS |
447 | lookup.interface = ifp; |
448 | ch = RB_FIND(pim_ifchannel_rb, &pim_ifp->ifchannel_rb, &lookup); | |
12e41d03 | 449 | |
d62a17ae | 450 | return ch; |
12e41d03 DL |
451 | } |
452 | ||
453 | static void ifmembership_set(struct pim_ifchannel *ch, | |
454 | enum pim_ifmembership membership) | |
455 | { | |
9b29ea95 DS |
456 | struct pim_interface *pim_ifp = ch->interface->info; |
457 | ||
d62a17ae | 458 | if (ch->local_ifmembership == membership) |
459 | return; | |
460 | ||
461 | if (PIM_DEBUG_PIM_EVENTS) { | |
462 | zlog_debug("%s: (S,G)=%s membership now is %s on interface %s", | |
15569c58 | 463 | __func__, ch->sg_str, |
d62a17ae | 464 | membership == PIM_IFMEMBERSHIP_INCLUDE ? "INCLUDE" |
465 | : "NOINFO", | |
466 | ch->interface->name); | |
467 | } | |
468 | ||
469 | ch->local_ifmembership = membership; | |
470 | ||
9b29ea95 | 471 | pim_upstream_update_join_desired(pim_ifp->pim, ch->upstream); |
d62a17ae | 472 | pim_ifchannel_update_could_assert(ch); |
473 | pim_ifchannel_update_assert_tracking_desired(ch); | |
12e41d03 DL |
474 | } |
475 | ||
476 | ||
477 | void pim_ifchannel_membership_clear(struct interface *ifp) | |
478 | { | |
d62a17ae | 479 | struct pim_interface *pim_ifp; |
d62a17ae | 480 | struct pim_ifchannel *ch; |
12e41d03 | 481 | |
d62a17ae | 482 | pim_ifp = ifp->info; |
df5dfb77 | 483 | assert(pim_ifp); |
12e41d03 | 484 | |
a2addae8 | 485 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) |
d62a17ae | 486 | ifmembership_set(ch, PIM_IFMEMBERSHIP_NOINFO); |
12e41d03 DL |
487 | } |
488 | ||
489 | void pim_ifchannel_delete_on_noinfo(struct interface *ifp) | |
490 | { | |
d62a17ae | 491 | struct pim_interface *pim_ifp; |
ad7b74c4 | 492 | struct pim_ifchannel *ch, *ch_tmp; |
12e41d03 | 493 | |
d62a17ae | 494 | pim_ifp = ifp->info; |
df5dfb77 | 495 | assert(pim_ifp); |
12e41d03 | 496 | |
a2addae8 | 497 | RB_FOREACH_SAFE (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb, ch_tmp) |
d62a17ae | 498 | delete_on_noinfo(ch); |
12e41d03 DL |
499 | } |
500 | ||
1a10fc74 DS |
501 | /* |
502 | * For a given Interface, if we are given a S,G | |
503 | * Find the *,G (If we have it). | |
504 | * If we are passed a *,G, find the *,* ifchannel | |
505 | * if we have it. | |
506 | */ | |
d62a17ae | 507 | static struct pim_ifchannel *pim_ifchannel_find_parent(struct pim_ifchannel *ch) |
1a10fc74 | 508 | { |
6fff2cc6 | 509 | pim_sgaddr parent_sg = ch->sg; |
d62a17ae | 510 | struct pim_ifchannel *parent = NULL; |
511 | ||
512 | // (S,G) | |
2a27f13b DL |
513 | if (!pim_addr_is_any(parent_sg.src) && |
514 | !pim_addr_is_any(parent_sg.grp)) { | |
bca160c6 | 515 | parent_sg.src = PIMADDR_ANY; |
d62a17ae | 516 | parent = pim_ifchannel_find(ch->interface, &parent_sg); |
517 | ||
518 | if (parent) | |
519 | listnode_add(parent->sources, ch); | |
520 | return parent; | |
521 | } | |
522 | ||
523 | return NULL; | |
1a10fc74 DS |
524 | } |
525 | ||
6fff2cc6 | 526 | struct pim_ifchannel *pim_ifchannel_add(struct interface *ifp, pim_sgaddr *sg, |
0885a9f1 | 527 | uint8_t source_flags, int up_flags) |
12e41d03 | 528 | { |
d62a17ae | 529 | struct pim_interface *pim_ifp; |
530 | struct pim_ifchannel *ch; | |
531 | struct pim_upstream *up; | |
532 | ||
533 | ch = pim_ifchannel_find(ifp, sg); | |
9046b170 MR |
534 | if (ch) { |
535 | if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_PIM) | |
536 | PIM_IF_FLAG_SET_PROTO_PIM(ch->flags); | |
537 | ||
538 | if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) | |
539 | PIM_IF_FLAG_SET_PROTO_IGMP(ch->flags); | |
540 | ||
541 | if (ch->upstream) | |
542 | ch->upstream->flags |= up_flags; | |
543 | else if (PIM_DEBUG_EVENTS) | |
98a81d2b | 544 | zlog_debug("%s:%pSG No Upstream found", __func__, sg); |
9046b170 | 545 | |
d62a17ae | 546 | return ch; |
9046b170 | 547 | } |
d62a17ae | 548 | |
549 | pim_ifp = ifp->info; | |
550 | ||
d62a17ae | 551 | ch = XCALLOC(MTYPE_PIM_IFCHANNEL, sizeof(*ch)); |
d62a17ae | 552 | |
553 | ch->flags = 0; | |
0885a9f1 DS |
554 | if ((source_flags & PIM_ENCODE_RPT_BIT) |
555 | && !(source_flags & PIM_ENCODE_WC_BIT)) | |
556 | PIM_IF_FLAG_SET_S_G_RPT(ch->flags); | |
557 | ||
d62a17ae | 558 | ch->interface = ifp; |
559 | ch->sg = *sg; | |
9bace5c2 | 560 | snprintfrr(ch->sg_str, sizeof(ch->sg_str), "%pSG", sg); |
d62a17ae | 561 | ch->parent = pim_ifchannel_find_parent(ch); |
2a27f13b | 562 | if (pim_addr_is_any(ch->sg.src)) { |
d62a17ae | 563 | ch->sources = list_new(); |
564 | ch->sources->cmp = | |
565 | (int (*)(void *, void *))pim_ifchannel_compare; | |
566 | } else | |
567 | ch->sources = NULL; | |
568 | ||
569 | pim_ifchannel_find_new_children(ch); | |
570 | ch->local_ifmembership = PIM_IFMEMBERSHIP_NOINFO; | |
571 | ||
572 | ch->ifjoin_state = PIM_IFJOIN_NOINFO; | |
573 | ch->t_ifjoin_expiry_timer = NULL; | |
574 | ch->t_ifjoin_prune_pending_timer = NULL; | |
575 | ch->ifjoin_creation = 0; | |
576 | ||
ad7b74c4 | 577 | RB_INSERT(pim_ifchannel_rb, &pim_ifp->ifchannel_rb, ch); |
0885a9f1 | 578 | |
15569c58 | 579 | up = pim_upstream_add(pim_ifp->pim, sg, NULL, up_flags, __func__, ch); |
0885a9f1 | 580 | |
9c80de24 | 581 | ch->upstream = up; |
0885a9f1 DS |
582 | |
583 | listnode_add_sort(up->ifchannels, ch); | |
584 | ||
d62a17ae | 585 | ch->ifassert_my_metric = pim_macro_ch_my_assert_metric_eval(ch); |
586 | ch->ifassert_winner_metric = pim_macro_ch_my_assert_metric_eval(ch); | |
587 | ||
2b844385 | 588 | ch->ifassert_winner = PIMADDR_ANY; |
d62a17ae | 589 | |
590 | /* Assert state */ | |
591 | ch->t_ifassert_timer = NULL; | |
592 | ch->ifassert_state = PIM_IFASSERT_NOINFO; | |
593 | reset_ifassert_state(ch); | |
594 | if (pim_macro_ch_could_assert_eval(ch)) | |
595 | PIM_IF_FLAG_SET_COULD_ASSERT(ch->flags); | |
596 | else | |
597 | PIM_IF_FLAG_UNSET_COULD_ASSERT(ch->flags); | |
598 | ||
599 | if (pim_macro_assert_tracking_desired_eval(ch)) | |
600 | PIM_IF_FLAG_SET_ASSERT_TRACKING_DESIRED(ch->flags); | |
601 | else | |
602 | PIM_IF_FLAG_UNSET_ASSERT_TRACKING_DESIRED(ch->flags); | |
603 | ||
22c35834 SK |
604 | /* |
605 | * advertise MLAG Data to MLAG peer | |
606 | */ | |
607 | if (PIM_I_am_DualActive(pim_ifp)) { | |
608 | up->dualactive_ifchannel_count++; | |
609 | /* Sync once for upstream */ | |
610 | if (up->dualactive_ifchannel_count == 1) { | |
611 | PIM_UPSTREAM_FLAG_SET_MLAG_INTERFACE(up->flags); | |
612 | pim_mlag_up_local_add(pim_ifp->pim, up); | |
613 | } | |
614 | if (PIM_DEBUG_MLAG) | |
615 | zlog_debug( | |
3efd0893 | 616 | "%s: New Dual active if-chnanel is added to upstream:%s count:%d, flags:0x%x", |
22c35834 SK |
617 | __func__, up->sg_str, |
618 | up->dualactive_ifchannel_count, up->flags); | |
619 | } | |
620 | ||
9443810e SP |
621 | if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_PIM) |
622 | PIM_IF_FLAG_SET_PROTO_PIM(ch->flags); | |
623 | ||
624 | if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) | |
625 | PIM_IF_FLAG_SET_PROTO_IGMP(ch->flags); | |
626 | ||
d62a17ae | 627 | if (PIM_DEBUG_PIM_TRACE) |
b900ad16 AK |
628 | zlog_debug("%s: ifchannel %s(%s) is created ", __func__, |
629 | ch->sg_str, ch->interface->name); | |
d62a17ae | 630 | |
631 | return ch; | |
12e41d03 DL |
632 | } |
633 | ||
86696f7b | 634 | static void ifjoin_to_noinfo(struct pim_ifchannel *ch) |
12e41d03 | 635 | { |
15569c58 | 636 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_NOINFO); |
5e0105ff | 637 | pim_forward_stop(ch); |
9046b170 MR |
638 | |
639 | if (ch->upstream) | |
640 | PIM_UPSTREAM_FLAG_UNSET_SRC_PIM(ch->upstream->flags); | |
641 | ||
642 | PIM_IF_FLAG_UNSET_PROTO_PIM(ch->flags); | |
643 | ||
86696f7b | 644 | delete_on_noinfo(ch); |
12e41d03 DL |
645 | } |
646 | ||
647 | static int on_ifjoin_expiry_timer(struct thread *t) | |
648 | { | |
d62a17ae | 649 | struct pim_ifchannel *ch; |
12e41d03 | 650 | |
d62a17ae | 651 | ch = THREAD_ARG(t); |
12e41d03 | 652 | |
23fc858a | 653 | if (PIM_DEBUG_PIM_TRACE) |
15569c58 | 654 | zlog_debug("%s: ifchannel %s expiry timer", __func__, |
03c2014c DS |
655 | ch->sg_str); |
656 | ||
86696f7b | 657 | ifjoin_to_noinfo(ch); |
d62a17ae | 658 | /* ch may have been deleted */ |
12e41d03 | 659 | |
d62a17ae | 660 | return 0; |
12e41d03 DL |
661 | } |
662 | ||
12e41d03 DL |
663 | static int on_ifjoin_prune_pending_timer(struct thread *t) |
664 | { | |
d62a17ae | 665 | struct pim_ifchannel *ch; |
666 | int send_prune_echo; /* boolean */ | |
667 | struct interface *ifp; | |
668 | struct pim_interface *pim_ifp; | |
669 | ||
670 | ch = THREAD_ARG(t); | |
671 | ||
23fc858a | 672 | if (PIM_DEBUG_PIM_TRACE) |
98a81d2b DL |
673 | zlog_debug("%s: IFCHANNEL%pSG %s Prune Pending Timer Popped", |
674 | __func__, &ch->sg, | |
675 | pim_ifchannel_ifjoin_name(ch->ifjoin_state, ch->flags)); | |
b456bceb | 676 | |
d62a17ae | 677 | if (ch->ifjoin_state == PIM_IFJOIN_PRUNE_PENDING) { |
d62a17ae | 678 | ifp = ch->interface; |
679 | pim_ifp = ifp->info; | |
c206937b DS |
680 | if (!PIM_IF_FLAG_TEST_S_G_RPT(ch->flags)) { |
681 | /* Send PruneEcho(S,G) ? */ | |
682 | send_prune_echo = | |
683 | (listcount(pim_ifp->pim_neighbor_list) > 1); | |
684 | ||
685 | if (send_prune_echo) { | |
686 | struct pim_rpf rpf; | |
687 | ||
688 | rpf.source_nexthop.interface = ifp; | |
2b844385 DL |
689 | pim_addr_to_prefix(&rpf.rpf_addr, |
690 | pim_ifp->primary_address); | |
996c9314 LB |
691 | pim_jp_agg_single_upstream_send( |
692 | &rpf, ch->upstream, 0); | |
c206937b | 693 | } |
d62a17ae | 694 | |
86696f7b | 695 | ifjoin_to_noinfo(ch); |
c206937b DS |
696 | } else { |
697 | /* If SGRpt flag is set on ifchannel, Trigger SGRpt | |
698 | * message on RP path upon prune timer expiry. | |
699 | */ | |
700 | ch->ifjoin_state = PIM_IFJOIN_PRUNE; | |
b456bceb DS |
701 | if (ch->upstream) { |
702 | struct pim_upstream *parent = | |
703 | ch->upstream->parent; | |
704 | ||
9b29ea95 DS |
705 | pim_upstream_update_join_desired(pim_ifp->pim, |
706 | ch->upstream); | |
b456bceb DS |
707 | |
708 | pim_jp_agg_single_upstream_send(&parent->rpf, | |
996c9314 | 709 | parent, true); |
d0c866d0 | 710 | /* |
711 | * SGRpt prune pending expiry has to install | |
712 | * SG entry with empty olist to drop the SG | |
713 | * traffic incase no other intf exists. | |
714 | * On that scenario, SG entry wouldn't have | |
715 | * got installed until Prune pending timer | |
716 | * expired. So install now. | |
717 | */ | |
718 | pim_channel_del_oif( | |
719 | ch->upstream->channel_oil, ifp, | |
720 | PIM_OIF_FLAG_PROTO_STAR, __func__); | |
721 | if (!ch->upstream->channel_oil->installed) | |
722 | pim_upstream_mroute_add( | |
723 | ch->upstream->channel_oil, | |
48c320d2 | 724 | __func__); |
b456bceb | 725 | } |
c206937b | 726 | } |
d62a17ae | 727 | /* from here ch may have been deleted */ |
d62a17ae | 728 | } |
729 | ||
730 | return 0; | |
12e41d03 DL |
731 | } |
732 | ||
d62a17ae | 733 | static void check_recv_upstream(int is_join, struct interface *recv_ifp, |
2b844385 | 734 | pim_addr upstream, pim_sgaddr *sg, |
d62a17ae | 735 | uint8_t source_flags, int holdtime) |
12e41d03 | 736 | { |
d62a17ae | 737 | struct pim_upstream *up; |
9b29ea95 | 738 | struct pim_interface *pim_ifp = recv_ifp->info; |
2b844385 | 739 | pim_addr rpf_addr; |
d62a17ae | 740 | |
741 | /* Upstream (S,G) in Joined state ? */ | |
9b29ea95 | 742 | up = pim_upstream_find(pim_ifp->pim, sg); |
d62a17ae | 743 | if (!up) |
744 | return; | |
745 | if (up->join_state != PIM_UPSTREAM_JOINED) | |
746 | return; | |
747 | ||
748 | /* Upstream (S,G) in Joined state */ | |
749 | ||
750 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) { | |
751 | /* RPF'(S,G) not found */ | |
15569c58 DA |
752 | zlog_warn("%s %s: RPF'%s not found", __FILE__, __func__, |
753 | up->sg_str); | |
d62a17ae | 754 | return; |
755 | } | |
756 | ||
2b844385 DL |
757 | rpf_addr = pim_addr_from_prefix(&up->rpf.rpf_addr); |
758 | ||
d62a17ae | 759 | /* upstream directed to RPF'(S,G) ? */ |
2b844385 | 760 | if (pim_addr_cmp(upstream, rpf_addr)) { |
d62a17ae | 761 | zlog_warn( |
2b844385 DL |
762 | "%s %s: (S,G)=%s upstream=%pPAs not directed to RPF'(S,G)=%pPAs on interface %s", |
763 | __FILE__, __func__, up->sg_str, &upstream, &rpf_addr, | |
15569c58 | 764 | recv_ifp->name); |
d62a17ae | 765 | return; |
766 | } | |
767 | /* upstream directed to RPF'(S,G) */ | |
768 | ||
769 | if (is_join) { | |
770 | /* Join(S,G) to RPF'(S,G) */ | |
771 | pim_upstream_join_suppress(up, up->rpf.rpf_addr.u.prefix4, | |
772 | holdtime); | |
773 | return; | |
774 | } | |
775 | ||
776 | /* Prune to RPF'(S,G) */ | |
777 | ||
778 | if (source_flags & PIM_RPT_BIT_MASK) { | |
779 | if (source_flags & PIM_WILDCARD_BIT_MASK) { | |
780 | /* Prune(*,G) to RPF'(S,G) */ | |
781 | pim_upstream_join_timer_decrease_to_t_override( | |
782 | "Prune(*,G)", up); | |
783 | return; | |
784 | } | |
785 | ||
786 | /* Prune(S,G,rpt) to RPF'(S,G) */ | |
787 | pim_upstream_join_timer_decrease_to_t_override("Prune(S,G,rpt)", | |
788 | up); | |
789 | return; | |
790 | } | |
791 | ||
792 | /* Prune(S,G) to RPF'(S,G) */ | |
793 | pim_upstream_join_timer_decrease_to_t_override("Prune(S,G)", up); | |
12e41d03 DL |
794 | } |
795 | ||
d62a17ae | 796 | static int nonlocal_upstream(int is_join, struct interface *recv_ifp, |
2b844385 | 797 | pim_addr upstream, pim_sgaddr *sg, |
d62a17ae | 798 | uint8_t source_flags, uint16_t holdtime) |
12e41d03 | 799 | { |
d62a17ae | 800 | struct pim_interface *recv_pim_ifp; |
801 | int is_local; /* boolean */ | |
802 | ||
803 | recv_pim_ifp = recv_ifp->info; | |
df5dfb77 | 804 | assert(recv_pim_ifp); |
d62a17ae | 805 | |
2b844385 | 806 | is_local = !pim_addr_cmp(upstream, recv_pim_ifp->primary_address); |
d62a17ae | 807 | |
808 | if (is_local) | |
809 | return 0; | |
810 | ||
2b844385 DL |
811 | if (PIM_DEBUG_PIM_TRACE_DETAIL) |
812 | zlog_warn( | |
813 | "%s: recv %s (S,G)=%pSG to non-local upstream=%pPAs on %s", | |
814 | __func__, is_join ? "join" : "prune", sg, &upstream, | |
815 | recv_ifp->name); | |
d62a17ae | 816 | |
817 | /* | |
818 | * Since recv upstream addr was not directed to our primary | |
819 | * address, check if we should react to it in any way. | |
820 | */ | |
821 | check_recv_upstream(is_join, recv_ifp, upstream, sg, source_flags, | |
822 | holdtime); | |
823 | ||
824 | return 1; /* non-local */ | |
12e41d03 DL |
825 | } |
826 | ||
94e3f3e5 AK |
827 | static void pim_ifchannel_ifjoin_handler(struct pim_ifchannel *ch, |
828 | struct pim_interface *pim_ifp) | |
829 | { | |
15569c58 | 830 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_JOIN); |
94e3f3e5 AK |
831 | PIM_IF_FLAG_UNSET_S_G_RPT(ch->flags); |
832 | /* check if the interface qualifies as an immediate | |
833 | * OIF | |
834 | */ | |
835 | if (pim_upstream_evaluate_join_desired_interface( | |
836 | ch->upstream, ch, | |
837 | NULL /*starch*/)) { | |
838 | pim_channel_add_oif(ch->upstream->channel_oil, | |
839 | ch->interface, | |
840 | PIM_OIF_FLAG_PROTO_PIM, | |
841 | __func__); | |
842 | pim_upstream_update_join_desired(pim_ifp->pim, | |
843 | ch->upstream); | |
844 | } | |
845 | } | |
846 | ||
847 | ||
2b844385 DL |
848 | void pim_ifchannel_join_add(struct interface *ifp, pim_addr neigh_addr, |
849 | pim_addr upstream, pim_sgaddr *sg, | |
d62a17ae | 850 | uint8_t source_flags, uint16_t holdtime) |
12e41d03 | 851 | { |
d62a17ae | 852 | struct pim_interface *pim_ifp; |
853 | struct pim_ifchannel *ch; | |
854 | ||
855 | if (nonlocal_upstream(1 /* join */, ifp, upstream, sg, source_flags, | |
856 | holdtime)) { | |
857 | return; | |
858 | } | |
859 | ||
0885a9f1 DS |
860 | ch = pim_ifchannel_add(ifp, sg, source_flags, |
861 | PIM_UPSTREAM_FLAG_MASK_SRC_PIM); | |
d62a17ae | 862 | |
12e41d03 | 863 | /* |
d62a17ae | 864 | RFC 4601: 4.6.1. (S,G) Assert Message State Machine |
865 | ||
866 | Transitions from "I am Assert Loser" State | |
12e41d03 | 867 | |
d62a17ae | 868 | Receive Join(S,G) on Interface I |
12e41d03 | 869 | |
d62a17ae | 870 | We receive a Join(S,G) that has the Upstream Neighbor Address |
871 | field set to my primary IP address on interface I. The action is | |
872 | to transition to NoInfo state, delete this (S,G) assert state | |
873 | (Actions A5 below), and allow the normal PIM Join/Prune mechanisms | |
874 | to operate. | |
12e41d03 | 875 | |
d62a17ae | 876 | Notice: The nonlocal_upstream() test above ensures the upstream |
877 | address of the join message is our primary address. | |
12e41d03 | 878 | */ |
d62a17ae | 879 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { |
9bb93fa0 DL |
880 | zlog_warn("%s: Assert Loser recv Join%s from %pI4 on %s", |
881 | __func__, ch->sg_str, &neigh_addr, ifp->name); | |
d62a17ae | 882 | |
883 | assert_action_a5(ch); | |
884 | } | |
885 | ||
886 | pim_ifp = ifp->info; | |
df5dfb77 | 887 | assert(pim_ifp); |
d62a17ae | 888 | |
889 | switch (ch->ifjoin_state) { | |
890 | case PIM_IFJOIN_NOINFO: | |
15569c58 | 891 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_JOIN); |
d62a17ae | 892 | if (pim_macro_chisin_oiflist(ch)) { |
9b29ea95 DS |
893 | pim_upstream_inherited_olist(pim_ifp->pim, |
894 | ch->upstream); | |
d62a17ae | 895 | pim_forward_start(ch); |
896 | } | |
897 | /* | |
898 | * If we are going to be a LHR, we need to note it | |
899 | */ | |
448139e7 AK |
900 | if (ch->upstream->parent && |
901 | (PIM_UPSTREAM_FLAG_TEST_CAN_BE_LHR( | |
902 | ch->upstream->parent->flags)) | |
d62a17ae | 903 | && !(ch->upstream->flags |
904 | & PIM_UPSTREAM_FLAG_MASK_SRC_LHR)) { | |
905 | pim_upstream_ref(ch->upstream, | |
906 | PIM_UPSTREAM_FLAG_MASK_SRC_LHR, | |
15569c58 | 907 | __func__); |
d62a17ae | 908 | pim_upstream_keep_alive_timer_start( |
19b807ca | 909 | ch->upstream, pim_ifp->pim->keep_alive_time); |
d62a17ae | 910 | } |
911 | break; | |
912 | case PIM_IFJOIN_JOIN: | |
df5dfb77 | 913 | assert(!ch->t_ifjoin_prune_pending_timer); |
d62a17ae | 914 | |
915 | /* | |
916 | In the JOIN state ch->t_ifjoin_expiry_timer may be NULL due to | |
917 | a | |
918 | previously received join message with holdtime=0xFFFF. | |
919 | */ | |
920 | if (ch->t_ifjoin_expiry_timer) { | |
921 | unsigned long remain = thread_timer_remain_second( | |
922 | ch->t_ifjoin_expiry_timer); | |
923 | if (remain > holdtime) { | |
924 | /* | |
925 | RFC 4601: 4.5.3. Receiving (S,G) Join/Prune | |
926 | Messages | |
927 | ||
928 | Transitions from Join State | |
929 | ||
930 | The (S,G) downstream state machine on | |
931 | interface I remains in | |
932 | Join state, and the Expiry Timer (ET) is | |
933 | restarted, set to | |
934 | maximum of its current value and the HoldTime | |
935 | from the | |
936 | triggering Join/Prune message. | |
937 | ||
938 | Conclusion: Do not change the ET if the | |
939 | current value is | |
940 | higher than the received join holdtime. | |
941 | */ | |
942 | return; | |
943 | } | |
944 | } | |
945 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
946 | break; | |
947 | case PIM_IFJOIN_PRUNE: | |
265aabf8 | 948 | if (source_flags & PIM_ENCODE_RPT_BIT) { |
15569c58 | 949 | pim_ifchannel_ifjoin_switch(__func__, ch, |
d62a17ae | 950 | PIM_IFJOIN_NOINFO); |
265aabf8 | 951 | THREAD_OFF(ch->t_ifjoin_expiry_timer); |
952 | delete_on_noinfo(ch); | |
953 | return; | |
954 | } else | |
94e3f3e5 | 955 | pim_ifchannel_ifjoin_handler(ch, pim_ifp); |
d62a17ae | 956 | break; |
957 | case PIM_IFJOIN_PRUNE_PENDING: | |
48484e58 | 958 | /* |
959 | * Transitions from Prune-Pending State (Receive Join) | |
960 | * RFC 7761 Sec 4.5.2: | |
961 | * The (S,G) downstream state machine on interface I | |
962 | * transitions to the Join state. The Prune-Pending Timer is | |
963 | * canceled (without triggering an expiry event). The | |
964 | * Expiry Timer (ET) is restarted and is then set to the | |
965 | * maximum of its current value and the HoldTime from the | |
966 | * triggering Join/Prune message. | |
967 | */ | |
d62a17ae | 968 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); |
877ebdf0 | 969 | |
970 | /* Check if SGRpt join Received */ | |
2a27f13b DL |
971 | if ((source_flags & PIM_ENCODE_RPT_BIT) && |
972 | !pim_addr_is_any(sg->src)) { | |
48484e58 | 973 | /* |
974 | * Transitions from Prune-Pending State (Rcv SGRpt Join) | |
975 | * RFC 7761 Sec 4.5.3: | |
976 | * The (S,G,rpt) downstream state machine on interface | |
977 | * I transitions to the NoInfo state.The ET and PPT are | |
978 | * cancelled. | |
979 | */ | |
d62a17ae | 980 | THREAD_OFF(ch->t_ifjoin_expiry_timer); |
15569c58 | 981 | pim_ifchannel_ifjoin_switch(__func__, ch, |
d62a17ae | 982 | PIM_IFJOIN_NOINFO); |
48484e58 | 983 | return; |
984 | } | |
985 | ||
986 | pim_ifchannel_ifjoin_handler(ch, pim_ifp); | |
987 | ||
988 | if (ch->t_ifjoin_expiry_timer) { | |
989 | unsigned long remain = thread_timer_remain_second( | |
990 | ch->t_ifjoin_expiry_timer); | |
991 | ||
992 | if (remain > holdtime) | |
993 | return; | |
94e3f3e5 | 994 | } |
b206dc55 | 995 | THREAD_OFF(ch->t_ifjoin_expiry_timer); |
48484e58 | 996 | |
d62a17ae | 997 | break; |
998 | case PIM_IFJOIN_PRUNE_TMP: | |
999 | break; | |
1000 | case PIM_IFJOIN_PRUNE_PENDING_TMP: | |
1001 | break; | |
1002 | } | |
1003 | ||
1004 | if (holdtime != 0xFFFF) { | |
36417fcc DS |
1005 | thread_add_timer(router->master, on_ifjoin_expiry_timer, ch, |
1006 | holdtime, &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 1007 | } |
12e41d03 DL |
1008 | } |
1009 | ||
2b844385 | 1010 | void pim_ifchannel_prune(struct interface *ifp, pim_addr upstream, |
6fff2cc6 | 1011 | pim_sgaddr *sg, uint8_t source_flags, |
12e41d03 DL |
1012 | uint16_t holdtime) |
1013 | { | |
d62a17ae | 1014 | struct pim_ifchannel *ch; |
1015 | struct pim_interface *pim_ifp; | |
1016 | int jp_override_interval_msec; | |
1405c852 | 1017 | |
d62a17ae | 1018 | if (nonlocal_upstream(0 /* prune */, ifp, upstream, sg, source_flags, |
1019 | holdtime)) { | |
1020 | return; | |
1021 | } | |
1022 | ||
1023 | ch = pim_ifchannel_find(ifp, sg); | |
1024 | if (!ch && !(source_flags & PIM_ENCODE_RPT_BIT)) { | |
23fc858a | 1025 | if (PIM_DEBUG_PIM_TRACE) |
98a81d2b DL |
1026 | zlog_debug("%s: Received prune with no relevant ifchannel %s%pSG state: %d", |
1027 | __func__, ifp->name, sg, | |
1028 | source_flags); | |
d62a17ae | 1029 | return; |
1030 | } | |
1031 | ||
0885a9f1 DS |
1032 | ch = pim_ifchannel_add(ifp, sg, source_flags, |
1033 | PIM_UPSTREAM_FLAG_MASK_SRC_PIM); | |
d62a17ae | 1034 | |
1035 | pim_ifp = ifp->info; | |
1036 | ||
1037 | switch (ch->ifjoin_state) { | |
1038 | case PIM_IFJOIN_NOINFO: | |
1039 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1040 | if (!(source_flags & PIM_ENCODE_WC_BIT)) | |
1041 | PIM_IF_FLAG_SET_S_G_RPT(ch->flags); | |
1042 | ||
1043 | ch->ifjoin_state = PIM_IFJOIN_PRUNE_PENDING; | |
1044 | if (listcount(pim_ifp->pim_neighbor_list) > 1) | |
1045 | jp_override_interval_msec = | |
1046 | pim_if_jp_override_interval_msec(ifp); | |
1047 | else | |
1048 | jp_override_interval_msec = | |
1049 | 0; /* schedule to expire immediately */ | |
1050 | /* If we called ifjoin_prune() directly instead, care | |
1051 | should | |
1052 | be taken not to use "ch" afterwards since it would be | |
1053 | deleted. */ | |
1054 | ||
1055 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
1056 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
1057 | thread_add_timer_msec( | |
36417fcc DS |
1058 | router->master, on_ifjoin_prune_pending_timer, |
1059 | ch, jp_override_interval_msec, | |
d62a17ae | 1060 | &ch->t_ifjoin_prune_pending_timer); |
36417fcc DS |
1061 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1062 | ch, holdtime, | |
1063 | &ch->t_ifjoin_expiry_timer); | |
9b29ea95 DS |
1064 | pim_upstream_update_join_desired(pim_ifp->pim, |
1065 | ch->upstream); | |
d62a17ae | 1066 | } |
1067 | break; | |
1068 | case PIM_IFJOIN_PRUNE_PENDING: | |
1069 | /* nothing to do */ | |
1070 | break; | |
1071 | case PIM_IFJOIN_JOIN: | |
48484e58 | 1072 | /* |
1073 | * The (S,G) downstream state machine on interface I | |
1074 | * transitions to the Prune-Pending state. The | |
1075 | * Prune-Pending Timer is started. It is set to the | |
1076 | * J/P_Override_Interval(I) if the router has more than one | |
1077 | * neighbor on that interface; otherwise, it is set to zero, | |
1078 | * causing it to expire immediately. | |
1079 | */ | |
d62a17ae | 1080 | |
15569c58 | 1081 | pim_ifchannel_ifjoin_switch(__func__, ch, |
d62a17ae | 1082 | PIM_IFJOIN_PRUNE_PENDING); |
1083 | ||
1084 | if (listcount(pim_ifp->pim_neighbor_list) > 1) | |
1085 | jp_override_interval_msec = | |
1086 | pim_if_jp_override_interval_msec(ifp); | |
1087 | else | |
1088 | jp_override_interval_msec = | |
1089 | 0; /* schedule to expire immediately */ | |
1090 | /* If we called ifjoin_prune() directly instead, care should | |
1091 | be taken not to use "ch" afterwards since it would be | |
1092 | deleted. */ | |
1093 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
36417fcc DS |
1094 | thread_add_timer_msec(router->master, |
1095 | on_ifjoin_prune_pending_timer, ch, | |
d62a17ae | 1096 | jp_override_interval_msec, |
1097 | &ch->t_ifjoin_prune_pending_timer); | |
1098 | break; | |
1099 | case PIM_IFJOIN_PRUNE: | |
1100 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1101 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
d0c866d0 | 1102 | /* |
1103 | * While in Prune State, Receive SGRpt Prune. | |
1104 | * RFC 7761 Sec 4.5.3: | |
1105 | * The (S,G,rpt) downstream state machine on interface I | |
1106 | * remains in Prune state. The Expiry Timer (ET) is | |
1107 | * restarted and is then set to the maximum of its | |
1108 | * current value and the HoldTime from the triggering | |
1109 | * Join/Prune message. | |
1110 | */ | |
1111 | if (ch->t_ifjoin_expiry_timer) { | |
1112 | unsigned long rem = thread_timer_remain_second( | |
1113 | ch->t_ifjoin_expiry_timer); | |
1114 | ||
1115 | if (rem > holdtime) | |
1116 | return; | |
1117 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
1118 | } | |
1119 | ||
36417fcc DS |
1120 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1121 | ch, holdtime, | |
1122 | &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 1123 | } |
1124 | break; | |
1125 | case PIM_IFJOIN_PRUNE_TMP: | |
1126 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1127 | ch->ifjoin_state = PIM_IFJOIN_PRUNE; | |
1128 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
36417fcc DS |
1129 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1130 | ch, holdtime, | |
1131 | &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 1132 | } |
1133 | break; | |
1134 | case PIM_IFJOIN_PRUNE_PENDING_TMP: | |
1135 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1136 | ch->ifjoin_state = PIM_IFJOIN_PRUNE_PENDING; | |
1137 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
36417fcc DS |
1138 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1139 | ch, holdtime, | |
1140 | &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 1141 | } |
1142 | break; | |
1143 | } | |
12e41d03 DL |
1144 | } |
1145 | ||
6fff2cc6 DL |
1146 | int pim_ifchannel_local_membership_add(struct interface *ifp, pim_sgaddr *sg, |
1147 | bool is_vxlan) | |
12e41d03 | 1148 | { |
d62a17ae | 1149 | struct pim_ifchannel *ch, *starch; |
1150 | struct pim_interface *pim_ifp; | |
43e40fdf | 1151 | struct pim_instance *pim; |
448139e7 | 1152 | int up_flags; |
d62a17ae | 1153 | |
1154 | /* PIM enabled on interface? */ | |
1155 | pim_ifp = ifp->info; | |
78b0c6bf DS |
1156 | if (!pim_ifp) { |
1157 | if (PIM_DEBUG_EVENTS) | |
98a81d2b DL |
1158 | zlog_debug("%s:%pSG Expected pim interface setup for %s", |
1159 | __func__, sg, ifp->name); | |
d62a17ae | 1160 | return 0; |
78b0c6bf DS |
1161 | } |
1162 | ||
1163 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) { | |
1164 | if (PIM_DEBUG_EVENTS) | |
98a81d2b DL |
1165 | zlog_debug("%s:%pSG PIM is not configured on this interface %s", |
1166 | __func__, sg, ifp->name); | |
d62a17ae | 1167 | return 0; |
78b0c6bf | 1168 | } |
d62a17ae | 1169 | |
43e40fdf DS |
1170 | pim = pim_ifp->pim; |
1171 | ||
d62a17ae | 1172 | /* skip (*,G) ch creation if G is of type SSM */ |
2a27f13b | 1173 | if (pim_addr_is_any(sg->src)) { |
6f439a70 | 1174 | if (pim_is_grp_ssm(pim, sg->grp)) { |
d62a17ae | 1175 | if (PIM_DEBUG_PIM_EVENTS) |
98a81d2b DL |
1176 | zlog_debug("%s: local membership (S,G)=%pSG ignored as group is SSM", |
1177 | __func__, sg); | |
d62a17ae | 1178 | return 1; |
1179 | } | |
1180 | } | |
1181 | ||
17823cdd DS |
1182 | /* vxlan term mroutes use ipmr-lo as local member to |
1183 | * pull down multicast vxlan tunnel traffic | |
1184 | */ | |
448139e7 AK |
1185 | up_flags = is_vxlan ? PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM : |
1186 | PIM_UPSTREAM_FLAG_MASK_SRC_IGMP; | |
1187 | ch = pim_ifchannel_add(ifp, sg, 0, up_flags); | |
d62a17ae | 1188 | |
1189 | ifmembership_set(ch, PIM_IFMEMBERSHIP_INCLUDE); | |
1190 | ||
2a27f13b | 1191 | if (pim_addr_is_any(sg->src)) { |
9b29ea95 | 1192 | struct pim_upstream *up = pim_upstream_find(pim, sg); |
d62a17ae | 1193 | struct pim_upstream *child; |
1194 | struct listnode *up_node; | |
1195 | ||
1196 | starch = ch; | |
1197 | ||
1198 | for (ALL_LIST_ELEMENTS_RO(up->sources, up_node, child)) { | |
1199 | if (PIM_DEBUG_EVENTS) | |
1200 | zlog_debug("%s %s: IGMP (S,G)=%s(%s) from %s", | |
5e81f5dd DS |
1201 | __FILE__, __func__, child->sg_str, |
1202 | ifp->name, up->sg_str); | |
d62a17ae | 1203 | |
660b0442 | 1204 | if (!child->rpf.source_nexthop.interface) { |
1205 | /* when iif unknown, do not inherit */ | |
1206 | if (PIM_DEBUG_EVENTS) | |
1207 | zlog_debug( | |
1208 | "Skipped (S,G)=%s(%s) from %s: no iif", | |
1209 | child->sg_str, ifp->name, | |
1210 | up->sg_str); | |
1211 | continue; | |
1212 | } | |
1213 | ||
d62a17ae | 1214 | ch = pim_ifchannel_find(ifp, &child->sg); |
1215 | if (pim_upstream_evaluate_join_desired_interface( | |
1216 | child, ch, starch)) { | |
1217 | pim_channel_add_oif(child->channel_oil, ifp, | |
1b249e70 AK |
1218 | PIM_OIF_FLAG_PROTO_STAR, |
1219 | __func__); | |
a53a9b3e | 1220 | pim_upstream_update_join_desired(pim, child); |
d62a17ae | 1221 | } |
1222 | } | |
1223 | ||
43e40fdf | 1224 | if (pim->spt.switchover == PIM_SPT_INFINITY) { |
f88df3a6 | 1225 | if (pim->spt.plist) { |
d62a17ae | 1226 | struct prefix_list *plist = prefix_list_lookup( |
43e40fdf | 1227 | AFI_IP, pim->spt.plist); |
d62a17ae | 1228 | struct prefix g; |
d62a17ae | 1229 | |
c631920c | 1230 | pim_addr_to_prefix(&g, up->sg.grp); |
d62a17ae | 1231 | if (prefix_list_apply(plist, &g) |
1232 | == PREFIX_DENY) { | |
1233 | pim_channel_add_oif( | |
43e40fdf | 1234 | up->channel_oil, pim->regiface, |
1b249e70 AK |
1235 | PIM_OIF_FLAG_PROTO_IGMP, |
1236 | __func__); | |
d62a17ae | 1237 | } |
1238 | } | |
1239 | } else | |
43e40fdf | 1240 | pim_channel_add_oif(up->channel_oil, pim->regiface, |
1b249e70 AK |
1241 | PIM_OIF_FLAG_PROTO_IGMP, |
1242 | __func__); | |
d62a17ae | 1243 | } |
1244 | ||
1245 | return 1; | |
12e41d03 DL |
1246 | } |
1247 | ||
6fff2cc6 | 1248 | void pim_ifchannel_local_membership_del(struct interface *ifp, pim_sgaddr *sg) |
12e41d03 | 1249 | { |
d62a17ae | 1250 | struct pim_ifchannel *starch, *ch, *orig; |
1251 | struct pim_interface *pim_ifp; | |
1252 | ||
1253 | /* PIM enabled on interface? */ | |
1254 | pim_ifp = ifp->info; | |
1255 | if (!pim_ifp) | |
1256 | return; | |
1257 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) | |
1258 | return; | |
1259 | ||
1260 | orig = ch = pim_ifchannel_find(ifp, sg); | |
1261 | if (!ch) | |
1262 | return; | |
d62a17ae | 1263 | ifmembership_set(ch, PIM_IFMEMBERSHIP_NOINFO); |
1264 | ||
2a27f13b | 1265 | if (pim_addr_is_any(sg->src)) { |
9b29ea95 | 1266 | struct pim_upstream *up = pim_upstream_find(pim_ifp->pim, sg); |
d62a17ae | 1267 | struct pim_upstream *child; |
1268 | struct listnode *up_node, *up_nnode; | |
1269 | ||
1270 | starch = ch; | |
1271 | ||
1272 | for (ALL_LIST_ELEMENTS(up->sources, up_node, up_nnode, child)) { | |
1273 | struct channel_oil *c_oil = child->channel_oil; | |
1274 | struct pim_ifchannel *chchannel = | |
1275 | pim_ifchannel_find(ifp, &child->sg); | |
dc7204b7 A |
1276 | |
1277 | pim_ifp = ifp->info; | |
d62a17ae | 1278 | |
1279 | if (PIM_DEBUG_EVENTS) | |
1280 | zlog_debug("%s %s: Prune(S,G)=%s(%s) from %s", | |
5e81f5dd DS |
1281 | __FILE__, __func__, up->sg_str, |
1282 | ifp->name, child->sg_str); | |
d62a17ae | 1283 | |
1284 | ch = pim_ifchannel_find(ifp, &child->sg); | |
d62a17ae | 1285 | /* |
1286 | * If the S,G has no if channel and the c_oil still | |
1287 | * has output here then the *,G was supplying the | |
1288 | * implied | |
1289 | * if channel. So remove it. | |
1290 | */ | |
1537a668 AK |
1291 | if (!pim_upstream_evaluate_join_desired_interface( |
1292 | child, ch, starch) || | |
1293 | (!chchannel && | |
1294 | c_oil->oil.mfcc_ttls[pim_ifp->mroute_vif_index])) { | |
1295 | pim_channel_del_inherited_oif(c_oil, ifp, | |
1296 | __func__); | |
1297 | } | |
d62a17ae | 1298 | |
1299 | /* Child node removal/ref count-- will happen as part of | |
1300 | * parent' delete_no_info */ | |
1301 | } | |
1302 | } | |
9046b170 MR |
1303 | |
1304 | /* Resettng the IGMP flags here */ | |
1305 | if (orig->upstream) | |
1306 | PIM_UPSTREAM_FLAG_UNSET_SRC_IGMP(orig->upstream->flags); | |
1307 | ||
1308 | PIM_IF_FLAG_UNSET_PROTO_IGMP(orig->flags); | |
1309 | ||
d62a17ae | 1310 | delete_on_noinfo(orig); |
12e41d03 DL |
1311 | } |
1312 | ||
1313 | void pim_ifchannel_update_could_assert(struct pim_ifchannel *ch) | |
1314 | { | |
d62a17ae | 1315 | int old_couldassert = |
1316 | PIM_FORCE_BOOLEAN(PIM_IF_FLAG_TEST_COULD_ASSERT(ch->flags)); | |
1317 | int new_couldassert = | |
1318 | PIM_FORCE_BOOLEAN(pim_macro_ch_could_assert_eval(ch)); | |
1319 | ||
1320 | if (new_couldassert == old_couldassert) | |
1321 | return; | |
1322 | ||
8e8be741 DL |
1323 | if (PIM_DEBUG_PIM_EVENTS) |
1324 | zlog_debug("%s: CouldAssert(%pPAs,%pPAs,%s) changed from %d to %d", | |
1325 | __func__, &ch->sg.src, &ch->sg.grp, | |
1326 | ch->interface->name, old_couldassert, | |
1327 | new_couldassert); | |
d62a17ae | 1328 | |
1329 | if (new_couldassert) { | |
2951a7a4 | 1330 | /* CouldAssert(S,G,I) switched from false to true */ |
d62a17ae | 1331 | PIM_IF_FLAG_SET_COULD_ASSERT(ch->flags); |
1332 | } else { | |
2951a7a4 | 1333 | /* CouldAssert(S,G,I) switched from true to false */ |
d62a17ae | 1334 | PIM_IF_FLAG_UNSET_COULD_ASSERT(ch->flags); |
1335 | ||
1336 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_WINNER) { | |
1337 | assert_action_a4(ch); | |
1338 | } | |
1339 | } | |
1340 | ||
1341 | pim_ifchannel_update_my_assert_metric(ch); | |
12e41d03 DL |
1342 | } |
1343 | ||
1344 | /* | |
1345 | my_assert_metric may be affected by: | |
1346 | ||
1347 | CouldAssert(S,G) | |
1348 | pim_ifp->primary_address | |
1349 | rpf->source_nexthop.mrib_metric_preference; | |
1350 | rpf->source_nexthop.mrib_route_metric; | |
1351 | */ | |
1352 | void pim_ifchannel_update_my_assert_metric(struct pim_ifchannel *ch) | |
1353 | { | |
d62a17ae | 1354 | struct pim_assert_metric my_metric_new = |
1355 | pim_macro_ch_my_assert_metric_eval(ch); | |
1356 | ||
1357 | if (pim_assert_metric_match(&my_metric_new, &ch->ifassert_my_metric)) | |
1358 | return; | |
1359 | ||
efd66f7b | 1360 | if (PIM_DEBUG_PIM_EVENTS) |
d62a17ae | 1361 | zlog_debug( |
efd66f7b | 1362 | "%s: my_assert_metric(%pPAs,%pPAs,%s) changed from %u,%u,%u,%pPAs to %u,%u,%u,%pPAs", |
8e8be741 | 1363 | __func__, &ch->sg.src, &ch->sg.grp, ch->interface->name, |
d62a17ae | 1364 | ch->ifassert_my_metric.rpt_bit_flag, |
1365 | ch->ifassert_my_metric.metric_preference, | |
efd66f7b DL |
1366 | ch->ifassert_my_metric.route_metric, |
1367 | &ch->ifassert_my_metric.ip_address, | |
d62a17ae | 1368 | my_metric_new.rpt_bit_flag, |
1369 | my_metric_new.metric_preference, | |
efd66f7b | 1370 | my_metric_new.route_metric, &my_metric_new.ip_address); |
d62a17ae | 1371 | |
1372 | ch->ifassert_my_metric = my_metric_new; | |
1373 | ||
1374 | if (pim_assert_metric_better(&ch->ifassert_my_metric, | |
1375 | &ch->ifassert_winner_metric)) { | |
1376 | assert_action_a5(ch); | |
1377 | } | |
12e41d03 DL |
1378 | } |
1379 | ||
1380 | void pim_ifchannel_update_assert_tracking_desired(struct pim_ifchannel *ch) | |
1381 | { | |
d62a17ae | 1382 | int old_atd = PIM_FORCE_BOOLEAN( |
1383 | PIM_IF_FLAG_TEST_ASSERT_TRACKING_DESIRED(ch->flags)); | |
1384 | int new_atd = | |
1385 | PIM_FORCE_BOOLEAN(pim_macro_assert_tracking_desired_eval(ch)); | |
1386 | ||
1387 | if (new_atd == old_atd) | |
1388 | return; | |
1389 | ||
8e8be741 | 1390 | if (PIM_DEBUG_PIM_EVENTS) |
d62a17ae | 1391 | zlog_debug( |
8e8be741 DL |
1392 | "%s: AssertTrackingDesired(%pPAs,%pPAs,%s) changed from %d to %d", |
1393 | __func__, &ch->sg.src, &ch->sg.grp, ch->interface->name, | |
15569c58 | 1394 | old_atd, new_atd); |
d62a17ae | 1395 | |
1396 | if (new_atd) { | |
2951a7a4 | 1397 | /* AssertTrackingDesired(S,G,I) switched from false to true */ |
d62a17ae | 1398 | PIM_IF_FLAG_SET_ASSERT_TRACKING_DESIRED(ch->flags); |
1399 | } else { | |
2951a7a4 | 1400 | /* AssertTrackingDesired(S,G,I) switched from true to false */ |
d62a17ae | 1401 | PIM_IF_FLAG_UNSET_ASSERT_TRACKING_DESIRED(ch->flags); |
1402 | ||
1403 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { | |
1404 | assert_action_a5(ch); | |
1405 | } | |
1406 | } | |
12e41d03 | 1407 | } |
c8507a16 DS |
1408 | |
1409 | /* | |
1410 | * If we have a new pim interface, check to | |
1411 | * see if any of the pre-existing channels have | |
1412 | * their upstream out that way and turn on forwarding | |
1413 | * for that ifchannel then. | |
1414 | */ | |
d62a17ae | 1415 | void pim_ifchannel_scan_forward_start(struct interface *new_ifp) |
c8507a16 | 1416 | { |
d62a17ae | 1417 | struct pim_interface *new_pim_ifp = new_ifp->info; |
f88df3a6 | 1418 | struct pim_instance *pim = new_pim_ifp->pim; |
ad7b74c4 | 1419 | struct interface *ifp; |
d62a17ae | 1420 | |
451fda4f | 1421 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 1422 | struct pim_interface *loop_pim_ifp = ifp->info; |
d62a17ae | 1423 | struct pim_ifchannel *ch; |
1424 | ||
1425 | if (!loop_pim_ifp) | |
1426 | continue; | |
1427 | ||
1428 | if (new_pim_ifp == loop_pim_ifp) | |
1429 | continue; | |
1430 | ||
a2addae8 | 1431 | RB_FOREACH (ch, pim_ifchannel_rb, &loop_pim_ifp->ifchannel_rb) { |
d62a17ae | 1432 | if (ch->ifjoin_state == PIM_IFJOIN_JOIN) { |
1433 | struct pim_upstream *up = ch->upstream; | |
1434 | if ((!up->channel_oil) | |
1435 | && (up->rpf.source_nexthop | |
1436 | .interface == new_ifp)) | |
1437 | pim_forward_start(ch); | |
1438 | } | |
1439 | } | |
1440 | } | |
c8507a16 | 1441 | } |
220d8a49 DS |
1442 | |
1443 | /* | |
1444 | * Downstream per-interface (S,G,rpt) state machine | |
1445 | * states that we need to move (S,G,rpt) items | |
1446 | * into different states at the start of the | |
1447 | * reception of a *,G join as well, when | |
1448 | * we get End of Message | |
1449 | */ | |
d62a17ae | 1450 | void pim_ifchannel_set_star_g_join_state(struct pim_ifchannel *ch, int eom, |
c206937b | 1451 | uint8_t join) |
220d8a49 | 1452 | { |
ca6cb21b | 1453 | bool send_upstream_starg = false; |
d62a17ae | 1454 | struct pim_ifchannel *child; |
37736d08 | 1455 | struct listnode *ch_node, *nch_node; |
c206937b DS |
1456 | struct pim_instance *pim = |
1457 | ((struct pim_interface *)ch->interface->info)->pim; | |
ca6cb21b | 1458 | struct pim_upstream *starup = ch->upstream; |
d62a17ae | 1459 | |
1460 | if (PIM_DEBUG_PIM_TRACE) | |
1461 | zlog_debug( | |
5e81f5dd | 1462 | "%s: %s %s eom: %d join %u", __func__, |
d62a17ae | 1463 | pim_ifchannel_ifjoin_name(ch->ifjoin_state, ch->flags), |
1464 | ch->sg_str, eom, join); | |
1465 | if (!ch->sources) | |
1466 | return; | |
1467 | ||
37736d08 | 1468 | for (ALL_LIST_ELEMENTS(ch->sources, ch_node, nch_node, child)) { |
d62a17ae | 1469 | if (!PIM_IF_FLAG_TEST_S_G_RPT(child->flags)) |
1470 | continue; | |
1471 | ||
1472 | switch (child->ifjoin_state) { | |
1473 | case PIM_IFJOIN_NOINFO: | |
1474 | case PIM_IFJOIN_JOIN: | |
1475 | break; | |
1476 | case PIM_IFJOIN_PRUNE: | |
1477 | if (!eom) | |
1478 | child->ifjoin_state = PIM_IFJOIN_PRUNE_TMP; | |
1479 | break; | |
1480 | case PIM_IFJOIN_PRUNE_PENDING: | |
1481 | if (!eom) | |
1482 | child->ifjoin_state = | |
1483 | PIM_IFJOIN_PRUNE_PENDING_TMP; | |
1484 | break; | |
1485 | case PIM_IFJOIN_PRUNE_TMP: | |
1486 | case PIM_IFJOIN_PRUNE_PENDING_TMP: | |
37736d08 DS |
1487 | if (!eom) |
1488 | break; | |
1489 | ||
1490 | if (child->ifjoin_state == PIM_IFJOIN_PRUNE_PENDING_TMP) | |
1491 | THREAD_OFF(child->t_ifjoin_prune_pending_timer); | |
1492 | THREAD_OFF(child->t_ifjoin_expiry_timer); | |
37736d08 DS |
1493 | |
1494 | PIM_IF_FLAG_UNSET_S_G_RPT(child->flags); | |
1495 | child->ifjoin_state = PIM_IFJOIN_NOINFO; | |
1496 | ||
0cdbb2cf SP |
1497 | if ((I_am_RP(pim, child->sg.grp)) && |
1498 | (!pim_upstream_empty_inherited_olist( | |
1499 | child->upstream))) { | |
37736d08 DS |
1500 | pim_channel_add_oif( |
1501 | child->upstream->channel_oil, | |
1b249e70 AK |
1502 | ch->interface, PIM_OIF_FLAG_PROTO_STAR, |
1503 | __func__); | |
a53a9b3e AK |
1504 | pim_upstream_update_join_desired(pim, |
1505 | child->upstream); | |
c206937b | 1506 | } |
ca6cb21b | 1507 | send_upstream_starg = true; |
37736d08 DS |
1508 | |
1509 | delete_on_noinfo(child); | |
d62a17ae | 1510 | break; |
1511 | } | |
1405c852 | 1512 | } |
ca6cb21b DS |
1513 | |
1514 | if (send_upstream_starg) | |
1515 | pim_jp_agg_single_upstream_send(&starup->rpf, starup, true); | |
220d8a49 | 1516 | } |