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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" | |
993e3d8e | 32 | #include "pim_instance.h" |
12e41d03 DL |
33 | #include "pim_str.h" |
34 | #include "pim_iface.h" | |
35 | #include "pim_ifchannel.h" | |
36 | #include "pim_zebra.h" | |
37 | #include "pim_time.h" | |
38 | #include "pim_msg.h" | |
39 | #include "pim_pim.h" | |
40 | #include "pim_join.h" | |
41 | #include "pim_rpf.h" | |
42 | #include "pim_macro.h" | |
dfbbce1d | 43 | #include "pim_oil.h" |
4a40c37a | 44 | #include "pim_upstream.h" |
15a5dafe | 45 | #include "pim_ssm.h" |
c206937b | 46 | #include "pim_rp.h" |
22c35834 | 47 | #include "pim_mlag.h" |
12e41d03 | 48 | |
996c9314 | 49 | RB_GENERATE(pim_ifchannel_rb, pim_ifchannel, pim_ifp_rb, pim_ifchannel_compare); |
ad7b74c4 DS |
50 | |
51 | int pim_ifchannel_compare(const struct pim_ifchannel *ch1, | |
52 | const struct pim_ifchannel *ch2) | |
3fdfd943 | 53 | { |
d62a17ae | 54 | struct pim_interface *pim_ifp1; |
55 | struct pim_interface *pim_ifp2; | |
3fdfd943 | 56 | |
d62a17ae | 57 | pim_ifp1 = ch1->interface->info; |
58 | pim_ifp2 = ch2->interface->info; | |
3fdfd943 | 59 | |
d62a17ae | 60 | if (pim_ifp1->mroute_vif_index < pim_ifp2->mroute_vif_index) |
61 | return -1; | |
3fdfd943 | 62 | |
d62a17ae | 63 | if (pim_ifp1->mroute_vif_index > pim_ifp2->mroute_vif_index) |
64 | return 1; | |
3fdfd943 | 65 | |
62f59b58 | 66 | return pim_sgaddr_cmp(ch1->sg, ch2->sg); |
3fdfd943 DS |
67 | } |
68 | ||
1a10fc74 DS |
69 | /* |
70 | * A (*,G) or a (*,*) is going away | |
71 | * remove the parent pointer from | |
72 | * those pointing at us | |
73 | */ | |
d62a17ae | 74 | static void pim_ifchannel_remove_children(struct pim_ifchannel *ch) |
1a10fc74 | 75 | { |
d62a17ae | 76 | struct pim_ifchannel *child; |
1a10fc74 | 77 | |
d62a17ae | 78 | if (!ch->sources) |
79 | return; | |
1a10fc74 | 80 | |
d62a17ae | 81 | while (!list_isempty(ch->sources)) { |
82 | child = listnode_head(ch->sources); | |
83 | child->parent = NULL; | |
84 | listnode_delete(ch->sources, child); | |
85 | } | |
1a10fc74 DS |
86 | } |
87 | ||
88 | /* | |
89 | * A (*,G) or a (*,*) is being created | |
90 | * find all the children that would point | |
91 | * at us. | |
92 | */ | |
d62a17ae | 93 | static void pim_ifchannel_find_new_children(struct pim_ifchannel *ch) |
1a10fc74 | 94 | { |
d62a17ae | 95 | struct pim_interface *pim_ifp = ch->interface->info; |
96 | struct pim_ifchannel *child; | |
d62a17ae | 97 | |
98 | // Basic Sanity that we are not being silly | |
2a27f13b | 99 | if (!pim_addr_is_any(ch->sg.src) && !pim_addr_is_any(ch->sg.grp)) |
d62a17ae | 100 | return; |
101 | ||
2a27f13b | 102 | if (pim_addr_is_any(ch->sg.src) && pim_addr_is_any(ch->sg.grp)) |
d62a17ae | 103 | return; |
104 | ||
a2addae8 | 105 | RB_FOREACH (child, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
2a27f13b | 106 | if (!pim_addr_is_any(ch->sg.grp) && |
032a7412 | 107 | !pim_addr_cmp(child->sg.grp, ch->sg.grp) && (child != ch)) { |
d62a17ae | 108 | child->parent = ch; |
109 | listnode_add_sort(ch->sources, child); | |
110 | } | |
3fdfd943 | 111 | } |
1a10fc74 DS |
112 | } |
113 | ||
12e41d03 DL |
114 | void pim_ifchannel_delete(struct pim_ifchannel *ch) |
115 | { | |
d62a17ae | 116 | struct pim_interface *pim_ifp; |
0f31a82a | 117 | struct pim_upstream *up; |
d62a17ae | 118 | |
119 | pim_ifp = ch->interface->info; | |
120 | ||
b900ad16 AK |
121 | if (PIM_DEBUG_PIM_TRACE) |
122 | zlog_debug("%s: ifchannel entry %s(%s) del start", __func__, | |
123 | ch->sg_str, ch->interface->name); | |
124 | ||
22c35834 SK |
125 | if (PIM_I_am_DualActive(pim_ifp)) { |
126 | if (PIM_DEBUG_MLAG) | |
127 | zlog_debug( | |
3efd0893 | 128 | "%s: if-chnanel-%s is deleted from a Dual active Interface", |
22c35834 SK |
129 | __func__, ch->sg_str); |
130 | /* Post Delete only if it is the last Dual-active Interface */ | |
131 | if (ch->upstream->dualactive_ifchannel_count == 1) { | |
132 | pim_mlag_up_local_del(pim_ifp->pim, ch->upstream); | |
133 | PIM_UPSTREAM_FLAG_UNSET_MLAG_INTERFACE( | |
134 | ch->upstream->flags); | |
135 | } | |
136 | ch->upstream->dualactive_ifchannel_count--; | |
137 | } | |
138 | ||
d62a17ae | 139 | if (ch->upstream->channel_oil) { |
140 | uint32_t mask = PIM_OIF_FLAG_PROTO_PIM; | |
141 | if (ch->upstream->flags & PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) | |
80a82b56 | 142 | mask |= PIM_OIF_FLAG_PROTO_GM; |
d62a17ae | 143 | |
2164ed5d DS |
144 | /* |
145 | * A S,G RPT channel can have an empty oil, we also | |
146 | * need to take into account the fact that a ifchannel | |
147 | * might have been suppressing a *,G ifchannel from | |
148 | * being inherited. So let's figure out what | |
149 | * needs to be done here | |
150 | */ | |
2a27f13b DL |
151 | if (!pim_addr_is_any(ch->sg.src) && |
152 | pim_upstream_evaluate_join_desired_interface( | |
153 | ch->upstream, ch, ch->parent)) | |
2164ed5d | 154 | pim_channel_add_oif(ch->upstream->channel_oil, |
71056a69 | 155 | ch->interface, |
1b249e70 AK |
156 | PIM_OIF_FLAG_PROTO_STAR, |
157 | __func__); | |
71056a69 AK |
158 | |
159 | pim_channel_del_oif(ch->upstream->channel_oil, | |
1b249e70 | 160 | ch->interface, mask, __func__); |
d62a17ae | 161 | /* |
162 | * Do we have any S,G's that are inheriting? | |
163 | * Nuke from on high too. | |
164 | */ | |
165 | if (ch->upstream->sources) { | |
166 | struct pim_upstream *child; | |
167 | struct listnode *up_node; | |
168 | ||
169 | for (ALL_LIST_ELEMENTS_RO(ch->upstream->sources, | |
170 | up_node, child)) | |
1537a668 AK |
171 | pim_channel_del_inherited_oif( |
172 | child->channel_oil, | |
173 | ch->interface, | |
174 | __func__); | |
d62a17ae | 175 | } |
176 | } | |
177 | ||
178 | /* | |
179 | * When this channel is removed | |
180 | * we need to find all our children | |
181 | * and make sure our pointers are fixed | |
182 | */ | |
183 | pim_ifchannel_remove_children(ch); | |
184 | ||
185 | if (ch->sources) | |
6a154c88 | 186 | list_delete(&ch->sources); |
d62a17ae | 187 | |
188 | listnode_delete(ch->upstream->ifchannels, ch); | |
189 | ||
0f31a82a | 190 | up = ch->upstream; |
d62a17ae | 191 | |
192 | /* upstream is common across ifchannels, check if upstream's | |
193 | ifchannel list is empty before deleting upstream_del | |
194 | ref count will take care of it. | |
195 | */ | |
e83f3b31 | 196 | if (ch->upstream->ref_count > 0) |
0f31a82a | 197 | up = pim_upstream_del(pim_ifp->pim, ch->upstream, __func__); |
e83f3b31 | 198 | |
889a75be DS |
199 | else { |
200 | if (PIM_DEBUG_PIM_TRACE) | |
5e81f5dd | 201 | zlog_debug( |
3efd0893 | 202 | "%s: Avoiding deletion of upstream with ref_count %d from ifchannel(%s): %s", |
5e81f5dd DS |
203 | __func__, ch->upstream->ref_count, |
204 | ch->interface->name, ch->sg_str); | |
889a75be | 205 | } |
e83f3b31 | 206 | |
d62a17ae | 207 | ch->upstream = NULL; |
208 | ||
209 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
210 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
211 | THREAD_OFF(ch->t_ifassert_timer); | |
212 | ||
213 | if (ch->parent) { | |
214 | listnode_delete(ch->parent->sources, ch); | |
215 | ch->parent = NULL; | |
216 | } | |
ad7b74c4 DS |
217 | |
218 | RB_REMOVE(pim_ifchannel_rb, &pim_ifp->ifchannel_rb, ch); | |
d62a17ae | 219 | |
220 | if (PIM_DEBUG_PIM_TRACE) | |
6d7c0df5 DS |
221 | zlog_debug("%s: ifchannel entry %s(%s) is deleted ", __func__, |
222 | ch->sg_str, ch->interface->name); | |
d62a17ae | 223 | |
7692c5ae | 224 | XFREE(MTYPE_PIM_IFCHANNEL, ch); |
0f31a82a AK |
225 | |
226 | if (up) | |
227 | pim_upstream_update_join_desired(pim_ifp->pim, up); | |
12e41d03 | 228 | } |
cb24fec4 | 229 | |
d62a17ae | 230 | void pim_ifchannel_delete_all(struct interface *ifp) |
cb24fec4 | 231 | { |
d62a17ae | 232 | struct pim_interface *pim_ifp; |
ad7b74c4 | 233 | struct pim_ifchannel *ch; |
d62a17ae | 234 | |
235 | pim_ifp = ifp->info; | |
236 | if (!pim_ifp) | |
237 | return; | |
238 | ||
55cd0f61 DS |
239 | while (!RB_EMPTY(pim_ifchannel_rb, &pim_ifp->ifchannel_rb)) { |
240 | ch = RB_ROOT(pim_ifchannel_rb, &pim_ifp->ifchannel_rb); | |
241 | ||
15569c58 | 242 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_NOINFO); |
ad7b74c4 | 243 | pim_ifchannel_delete(ch); |
d62a17ae | 244 | } |
cb24fec4 | 245 | } |
d62a17ae | 246 | |
99f9518b | 247 | void delete_on_noinfo(struct pim_ifchannel *ch) |
12e41d03 | 248 | { |
d62a17ae | 249 | if (ch->local_ifmembership == PIM_IFMEMBERSHIP_NOINFO |
250 | && ch->ifjoin_state == PIM_IFJOIN_NOINFO | |
251 | && ch->t_ifjoin_expiry_timer == NULL) | |
252 | pim_ifchannel_delete(ch); | |
12e41d03 DL |
253 | } |
254 | ||
d62a17ae | 255 | void pim_ifchannel_ifjoin_switch(const char *caller, struct pim_ifchannel *ch, |
12e41d03 DL |
256 | enum pim_ifjoin_state new_state) |
257 | { | |
d62a17ae | 258 | enum pim_ifjoin_state old_state = ch->ifjoin_state; |
9b29ea95 | 259 | struct pim_interface *pim_ifp = ch->interface->info; |
a53a9b3e | 260 | struct pim_ifchannel *child_ch; |
d62a17ae | 261 | |
262 | if (PIM_DEBUG_PIM_EVENTS) | |
263 | zlog_debug( | |
264 | "PIM_IFCHANNEL(%s): %s is switching from %s to %s", | |
265 | ch->interface->name, ch->sg_str, | |
266 | pim_ifchannel_ifjoin_name(ch->ifjoin_state, ch->flags), | |
267 | pim_ifchannel_ifjoin_name(new_state, 0)); | |
268 | ||
269 | ||
270 | if (old_state == new_state) { | |
271 | if (PIM_DEBUG_PIM_EVENTS) { | |
272 | zlog_debug( | |
de674e9f | 273 | "%s called by %s: non-transition on state %d (%s)", |
5e81f5dd | 274 | __func__, caller, new_state, |
d62a17ae | 275 | pim_ifchannel_ifjoin_name(new_state, 0)); |
6578dfa3 | 276 | } |
d62a17ae | 277 | return; |
278 | } | |
279 | ||
280 | ch->ifjoin_state = new_state; | |
281 | ||
2a27f13b | 282 | if (pim_addr_is_any(ch->sg.src)) { |
d62a17ae | 283 | struct pim_upstream *up = ch->upstream; |
284 | struct pim_upstream *child; | |
285 | struct listnode *up_node; | |
286 | ||
287 | if (up) { | |
288 | if (ch->ifjoin_state == PIM_IFJOIN_NOINFO) { | |
289 | for (ALL_LIST_ELEMENTS_RO(up->sources, up_node, | |
290 | child)) { | |
291 | struct channel_oil *c_oil = | |
292 | child->channel_oil; | |
d62a17ae | 293 | |
294 | if (PIM_DEBUG_PIM_TRACE) | |
295 | zlog_debug( | |
296 | "%s %s: Prune(S,G)=%s from %s", | |
5e81f5dd | 297 | __FILE__, __func__, |
d62a17ae | 298 | child->sg_str, |
299 | up->sg_str); | |
300 | if (!c_oil) | |
301 | continue; | |
302 | ||
d62a17ae | 303 | /* |
304 | * If the S,G has no if channel and the | |
305 | * c_oil still | |
306 | * has output here then the *,G was | |
307 | * supplying the implied | |
308 | * if channel. So remove it. | |
d62a17ae | 309 | */ |
a9338fa4 DL |
310 | if (oil_if_has(c_oil, |
311 | pim_ifp->mroute_vif_index)) | |
1537a668 | 312 | pim_channel_del_inherited_oif( |
d62a17ae | 313 | c_oil, ch->interface, |
1b249e70 | 314 | __func__); |
d62a17ae | 315 | } |
316 | } | |
317 | if (ch->ifjoin_state == PIM_IFJOIN_JOIN) { | |
318 | for (ALL_LIST_ELEMENTS_RO(up->sources, up_node, | |
319 | child)) { | |
320 | if (PIM_DEBUG_PIM_TRACE) | |
321 | zlog_debug( | |
322 | "%s %s: Join(S,G)=%s from %s", | |
5e81f5dd | 323 | __FILE__, __func__, |
d62a17ae | 324 | child->sg_str, |
325 | up->sg_str); | |
326 | ||
a53a9b3e AK |
327 | /* check if the channel can be |
328 | * inherited into the SG's OIL | |
329 | */ | |
330 | child_ch = pim_ifchannel_find( | |
331 | ch->interface, | |
332 | &child->sg); | |
333 | if (pim_upstream_eval_inherit_if( | |
334 | child, child_ch, ch)) { | |
d62a17ae | 335 | pim_channel_add_oif( |
336 | child->channel_oil, | |
337 | ch->interface, | |
1b249e70 AK |
338 | PIM_OIF_FLAG_PROTO_STAR, |
339 | __func__); | |
d62a17ae | 340 | pim_upstream_update_join_desired( |
9b29ea95 | 341 | pim_ifp->pim, child); |
d62a17ae | 342 | } |
343 | } | |
344 | } | |
6578dfa3 | 345 | } |
6578dfa3 | 346 | } |
d62a17ae | 347 | /* Transition to/from NOINFO ? */ |
348 | if ((old_state == PIM_IFJOIN_NOINFO) | |
349 | || (new_state == PIM_IFJOIN_NOINFO)) { | |
350 | ||
351 | if (PIM_DEBUG_PIM_EVENTS) { | |
352 | zlog_debug("PIM_IFCHANNEL_%s: (S,G)=%s on interface %s", | |
353 | ((new_state == PIM_IFJOIN_NOINFO) ? "DOWN" | |
354 | : "UP"), | |
355 | ch->sg_str, ch->interface->name); | |
356 | } | |
357 | ||
358 | /* | |
359 | Record uptime of state transition to/from NOINFO | |
360 | */ | |
361 | ch->ifjoin_creation = pim_time_monotonic_sec(); | |
362 | ||
9b29ea95 | 363 | pim_upstream_update_join_desired(pim_ifp->pim, ch->upstream); |
d62a17ae | 364 | pim_ifchannel_update_could_assert(ch); |
365 | pim_ifchannel_update_assert_tracking_desired(ch); | |
366 | } | |
12e41d03 DL |
367 | } |
368 | ||
d1e77284 | 369 | const char *pim_ifchannel_ifjoin_name(enum pim_ifjoin_state ifjoin_state, |
d62a17ae | 370 | int flags) |
12e41d03 | 371 | { |
d62a17ae | 372 | switch (ifjoin_state) { |
373 | case PIM_IFJOIN_NOINFO: | |
374 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) | |
c206937b | 375 | return "SGRpt(NI)"; |
d62a17ae | 376 | else |
377 | return "NOINFO"; | |
d62a17ae | 378 | case PIM_IFJOIN_JOIN: |
379 | return "JOIN"; | |
d62a17ae | 380 | case PIM_IFJOIN_PRUNE: |
c206937b DS |
381 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
382 | return "SGRpt(P)"; | |
383 | else | |
384 | return "PRUNE"; | |
d62a17ae | 385 | case PIM_IFJOIN_PRUNE_PENDING: |
c206937b DS |
386 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
387 | return "SGRpt(PP)"; | |
388 | else | |
389 | return "PRUNEP"; | |
d62a17ae | 390 | case PIM_IFJOIN_PRUNE_TMP: |
c206937b DS |
391 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
392 | return "SGRpt(P')"; | |
393 | else | |
394 | return "PRUNET"; | |
d62a17ae | 395 | case PIM_IFJOIN_PRUNE_PENDING_TMP: |
c206937b DS |
396 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
397 | return "SGRpt(PP')"; | |
398 | else | |
399 | return "PRUNEPT"; | |
d62a17ae | 400 | } |
401 | ||
402 | return "ifjoin_bad_state"; | |
12e41d03 DL |
403 | } |
404 | ||
405 | const char *pim_ifchannel_ifassert_name(enum pim_ifassert_state ifassert_state) | |
406 | { | |
d62a17ae | 407 | switch (ifassert_state) { |
408 | case PIM_IFASSERT_NOINFO: | |
409 | return "NOINFO"; | |
410 | case PIM_IFASSERT_I_AM_WINNER: | |
411 | return "WINNER"; | |
412 | case PIM_IFASSERT_I_AM_LOSER: | |
413 | return "LOSER"; | |
414 | } | |
12e41d03 | 415 | |
d62a17ae | 416 | return "ifassert_bad_state"; |
12e41d03 DL |
417 | } |
418 | ||
419 | /* | |
420 | RFC 4601: 4.6.5. Assert State Macros | |
421 | ||
422 | AssertWinner(S,G,I) defaults to NULL and AssertWinnerMetric(S,G,I) | |
423 | defaults to Infinity when in the NoInfo state. | |
424 | */ | |
425 | void reset_ifassert_state(struct pim_ifchannel *ch) | |
426 | { | |
d62a17ae | 427 | THREAD_OFF(ch->t_ifassert_timer); |
12e41d03 | 428 | |
2b844385 | 429 | pim_ifassert_winner_set(ch, PIM_IFASSERT_NOINFO, PIMADDR_ANY, |
d17612dd | 430 | router->infinite_assert_metric); |
12e41d03 DL |
431 | } |
432 | ||
6fff2cc6 | 433 | struct pim_ifchannel *pim_ifchannel_find(struct interface *ifp, pim_sgaddr *sg) |
12e41d03 | 434 | { |
d62a17ae | 435 | struct pim_interface *pim_ifp; |
436 | struct pim_ifchannel *ch; | |
437 | struct pim_ifchannel lookup; | |
12e41d03 | 438 | |
d62a17ae | 439 | pim_ifp = ifp->info; |
12e41d03 | 440 | |
d62a17ae | 441 | if (!pim_ifp) { |
98a81d2b DL |
442 | zlog_warn("%s: (S,G)=%pSG: multicast not enabled on interface %s", |
443 | __func__, sg, ifp->name); | |
d62a17ae | 444 | return NULL; |
445 | } | |
12e41d03 | 446 | |
d62a17ae | 447 | lookup.sg = *sg; |
ad7b74c4 DS |
448 | lookup.interface = ifp; |
449 | ch = RB_FIND(pim_ifchannel_rb, &pim_ifp->ifchannel_rb, &lookup); | |
12e41d03 | 450 | |
d62a17ae | 451 | return ch; |
12e41d03 DL |
452 | } |
453 | ||
454 | static void ifmembership_set(struct pim_ifchannel *ch, | |
455 | enum pim_ifmembership membership) | |
456 | { | |
9b29ea95 DS |
457 | struct pim_interface *pim_ifp = ch->interface->info; |
458 | ||
d62a17ae | 459 | if (ch->local_ifmembership == membership) |
460 | return; | |
461 | ||
462 | if (PIM_DEBUG_PIM_EVENTS) { | |
463 | zlog_debug("%s: (S,G)=%s membership now is %s on interface %s", | |
15569c58 | 464 | __func__, ch->sg_str, |
d62a17ae | 465 | membership == PIM_IFMEMBERSHIP_INCLUDE ? "INCLUDE" |
466 | : "NOINFO", | |
467 | ch->interface->name); | |
468 | } | |
469 | ||
470 | ch->local_ifmembership = membership; | |
471 | ||
9b29ea95 | 472 | pim_upstream_update_join_desired(pim_ifp->pim, ch->upstream); |
d62a17ae | 473 | pim_ifchannel_update_could_assert(ch); |
474 | pim_ifchannel_update_assert_tracking_desired(ch); | |
12e41d03 DL |
475 | } |
476 | ||
477 | ||
478 | void pim_ifchannel_membership_clear(struct interface *ifp) | |
479 | { | |
d62a17ae | 480 | struct pim_interface *pim_ifp; |
d62a17ae | 481 | struct pim_ifchannel *ch; |
12e41d03 | 482 | |
d62a17ae | 483 | pim_ifp = ifp->info; |
df5dfb77 | 484 | assert(pim_ifp); |
12e41d03 | 485 | |
a2addae8 | 486 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) |
d62a17ae | 487 | ifmembership_set(ch, PIM_IFMEMBERSHIP_NOINFO); |
12e41d03 DL |
488 | } |
489 | ||
490 | void pim_ifchannel_delete_on_noinfo(struct interface *ifp) | |
491 | { | |
d62a17ae | 492 | struct pim_interface *pim_ifp; |
ad7b74c4 | 493 | struct pim_ifchannel *ch, *ch_tmp; |
12e41d03 | 494 | |
d62a17ae | 495 | pim_ifp = ifp->info; |
df5dfb77 | 496 | assert(pim_ifp); |
12e41d03 | 497 | |
a2addae8 | 498 | RB_FOREACH_SAFE (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb, ch_tmp) |
d62a17ae | 499 | delete_on_noinfo(ch); |
12e41d03 DL |
500 | } |
501 | ||
1a10fc74 DS |
502 | /* |
503 | * For a given Interface, if we are given a S,G | |
504 | * Find the *,G (If we have it). | |
505 | * If we are passed a *,G, find the *,* ifchannel | |
506 | * if we have it. | |
507 | */ | |
d62a17ae | 508 | static struct pim_ifchannel *pim_ifchannel_find_parent(struct pim_ifchannel *ch) |
1a10fc74 | 509 | { |
6fff2cc6 | 510 | pim_sgaddr parent_sg = ch->sg; |
d62a17ae | 511 | struct pim_ifchannel *parent = NULL; |
512 | ||
513 | // (S,G) | |
2a27f13b DL |
514 | if (!pim_addr_is_any(parent_sg.src) && |
515 | !pim_addr_is_any(parent_sg.grp)) { | |
bca160c6 | 516 | parent_sg.src = PIMADDR_ANY; |
d62a17ae | 517 | parent = pim_ifchannel_find(ch->interface, &parent_sg); |
518 | ||
519 | if (parent) | |
520 | listnode_add(parent->sources, ch); | |
521 | return parent; | |
522 | } | |
523 | ||
524 | return NULL; | |
1a10fc74 DS |
525 | } |
526 | ||
6fff2cc6 | 527 | struct pim_ifchannel *pim_ifchannel_add(struct interface *ifp, pim_sgaddr *sg, |
0885a9f1 | 528 | uint8_t source_flags, int up_flags) |
12e41d03 | 529 | { |
d62a17ae | 530 | struct pim_interface *pim_ifp; |
531 | struct pim_ifchannel *ch; | |
532 | struct pim_upstream *up; | |
533 | ||
534 | ch = pim_ifchannel_find(ifp, sg); | |
9046b170 MR |
535 | if (ch) { |
536 | if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_PIM) | |
537 | PIM_IF_FLAG_SET_PROTO_PIM(ch->flags); | |
538 | ||
539 | if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) | |
540 | PIM_IF_FLAG_SET_PROTO_IGMP(ch->flags); | |
541 | ||
542 | if (ch->upstream) | |
543 | ch->upstream->flags |= up_flags; | |
544 | else if (PIM_DEBUG_EVENTS) | |
98a81d2b | 545 | zlog_debug("%s:%pSG No Upstream found", __func__, sg); |
9046b170 | 546 | |
d62a17ae | 547 | return ch; |
9046b170 | 548 | } |
d62a17ae | 549 | |
550 | pim_ifp = ifp->info; | |
551 | ||
d62a17ae | 552 | ch = XCALLOC(MTYPE_PIM_IFCHANNEL, sizeof(*ch)); |
d62a17ae | 553 | |
554 | ch->flags = 0; | |
0885a9f1 DS |
555 | if ((source_flags & PIM_ENCODE_RPT_BIT) |
556 | && !(source_flags & PIM_ENCODE_WC_BIT)) | |
557 | PIM_IF_FLAG_SET_S_G_RPT(ch->flags); | |
558 | ||
d62a17ae | 559 | ch->interface = ifp; |
560 | ch->sg = *sg; | |
9bace5c2 | 561 | snprintfrr(ch->sg_str, sizeof(ch->sg_str), "%pSG", sg); |
d62a17ae | 562 | ch->parent = pim_ifchannel_find_parent(ch); |
2a27f13b | 563 | if (pim_addr_is_any(ch->sg.src)) { |
d62a17ae | 564 | ch->sources = list_new(); |
565 | ch->sources->cmp = | |
566 | (int (*)(void *, void *))pim_ifchannel_compare; | |
567 | } else | |
568 | ch->sources = NULL; | |
569 | ||
570 | pim_ifchannel_find_new_children(ch); | |
571 | ch->local_ifmembership = PIM_IFMEMBERSHIP_NOINFO; | |
572 | ||
573 | ch->ifjoin_state = PIM_IFJOIN_NOINFO; | |
574 | ch->t_ifjoin_expiry_timer = NULL; | |
575 | ch->t_ifjoin_prune_pending_timer = NULL; | |
576 | ch->ifjoin_creation = 0; | |
577 | ||
ad7b74c4 | 578 | RB_INSERT(pim_ifchannel_rb, &pim_ifp->ifchannel_rb, ch); |
0885a9f1 | 579 | |
15569c58 | 580 | up = pim_upstream_add(pim_ifp->pim, sg, NULL, up_flags, __func__, ch); |
0885a9f1 | 581 | |
9c80de24 | 582 | ch->upstream = up; |
0885a9f1 DS |
583 | |
584 | listnode_add_sort(up->ifchannels, ch); | |
585 | ||
d62a17ae | 586 | ch->ifassert_my_metric = pim_macro_ch_my_assert_metric_eval(ch); |
587 | ch->ifassert_winner_metric = pim_macro_ch_my_assert_metric_eval(ch); | |
588 | ||
2b844385 | 589 | ch->ifassert_winner = PIMADDR_ANY; |
d62a17ae | 590 | |
591 | /* Assert state */ | |
592 | ch->t_ifassert_timer = NULL; | |
593 | ch->ifassert_state = PIM_IFASSERT_NOINFO; | |
594 | reset_ifassert_state(ch); | |
595 | if (pim_macro_ch_could_assert_eval(ch)) | |
596 | PIM_IF_FLAG_SET_COULD_ASSERT(ch->flags); | |
597 | else | |
598 | PIM_IF_FLAG_UNSET_COULD_ASSERT(ch->flags); | |
599 | ||
600 | if (pim_macro_assert_tracking_desired_eval(ch)) | |
601 | PIM_IF_FLAG_SET_ASSERT_TRACKING_DESIRED(ch->flags); | |
602 | else | |
603 | PIM_IF_FLAG_UNSET_ASSERT_TRACKING_DESIRED(ch->flags); | |
604 | ||
22c35834 SK |
605 | /* |
606 | * advertise MLAG Data to MLAG peer | |
607 | */ | |
608 | if (PIM_I_am_DualActive(pim_ifp)) { | |
609 | up->dualactive_ifchannel_count++; | |
610 | /* Sync once for upstream */ | |
611 | if (up->dualactive_ifchannel_count == 1) { | |
612 | PIM_UPSTREAM_FLAG_SET_MLAG_INTERFACE(up->flags); | |
613 | pim_mlag_up_local_add(pim_ifp->pim, up); | |
614 | } | |
615 | if (PIM_DEBUG_MLAG) | |
616 | zlog_debug( | |
3efd0893 | 617 | "%s: New Dual active if-chnanel is added to upstream:%s count:%d, flags:0x%x", |
22c35834 SK |
618 | __func__, up->sg_str, |
619 | up->dualactive_ifchannel_count, up->flags); | |
620 | } | |
621 | ||
9443810e SP |
622 | if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_PIM) |
623 | PIM_IF_FLAG_SET_PROTO_PIM(ch->flags); | |
624 | ||
625 | if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) | |
626 | PIM_IF_FLAG_SET_PROTO_IGMP(ch->flags); | |
627 | ||
d62a17ae | 628 | if (PIM_DEBUG_PIM_TRACE) |
b900ad16 AK |
629 | zlog_debug("%s: ifchannel %s(%s) is created ", __func__, |
630 | ch->sg_str, ch->interface->name); | |
d62a17ae | 631 | |
632 | return ch; | |
12e41d03 DL |
633 | } |
634 | ||
86696f7b | 635 | static void ifjoin_to_noinfo(struct pim_ifchannel *ch) |
12e41d03 | 636 | { |
15569c58 | 637 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_NOINFO); |
5e0105ff | 638 | pim_forward_stop(ch); |
9046b170 MR |
639 | |
640 | if (ch->upstream) | |
641 | PIM_UPSTREAM_FLAG_UNSET_SRC_PIM(ch->upstream->flags); | |
642 | ||
643 | PIM_IF_FLAG_UNSET_PROTO_PIM(ch->flags); | |
644 | ||
86696f7b | 645 | delete_on_noinfo(ch); |
12e41d03 DL |
646 | } |
647 | ||
cc9f21da | 648 | static void on_ifjoin_expiry_timer(struct thread *t) |
12e41d03 | 649 | { |
d62a17ae | 650 | struct pim_ifchannel *ch; |
12e41d03 | 651 | |
d62a17ae | 652 | ch = THREAD_ARG(t); |
12e41d03 | 653 | |
23fc858a | 654 | if (PIM_DEBUG_PIM_TRACE) |
15569c58 | 655 | zlog_debug("%s: ifchannel %s expiry timer", __func__, |
03c2014c DS |
656 | ch->sg_str); |
657 | ||
86696f7b | 658 | ifjoin_to_noinfo(ch); |
d62a17ae | 659 | /* ch may have been deleted */ |
12e41d03 DL |
660 | } |
661 | ||
cc9f21da | 662 | static void on_ifjoin_prune_pending_timer(struct thread *t) |
12e41d03 | 663 | { |
d62a17ae | 664 | struct pim_ifchannel *ch; |
665 | int send_prune_echo; /* boolean */ | |
666 | struct interface *ifp; | |
667 | struct pim_interface *pim_ifp; | |
668 | ||
669 | ch = THREAD_ARG(t); | |
670 | ||
23fc858a | 671 | if (PIM_DEBUG_PIM_TRACE) |
98a81d2b DL |
672 | zlog_debug("%s: IFCHANNEL%pSG %s Prune Pending Timer Popped", |
673 | __func__, &ch->sg, | |
674 | pim_ifchannel_ifjoin_name(ch->ifjoin_state, ch->flags)); | |
b456bceb | 675 | |
d62a17ae | 676 | if (ch->ifjoin_state == PIM_IFJOIN_PRUNE_PENDING) { |
d62a17ae | 677 | ifp = ch->interface; |
678 | pim_ifp = ifp->info; | |
c206937b DS |
679 | if (!PIM_IF_FLAG_TEST_S_G_RPT(ch->flags)) { |
680 | /* Send PruneEcho(S,G) ? */ | |
681 | send_prune_echo = | |
682 | (listcount(pim_ifp->pim_neighbor_list) > 1); | |
683 | ||
684 | if (send_prune_echo) { | |
685 | struct pim_rpf rpf; | |
686 | ||
687 | rpf.source_nexthop.interface = ifp; | |
2b844385 DL |
688 | pim_addr_to_prefix(&rpf.rpf_addr, |
689 | pim_ifp->primary_address); | |
996c9314 LB |
690 | pim_jp_agg_single_upstream_send( |
691 | &rpf, ch->upstream, 0); | |
c206937b | 692 | } |
d62a17ae | 693 | |
86696f7b | 694 | ifjoin_to_noinfo(ch); |
c206937b DS |
695 | } else { |
696 | /* If SGRpt flag is set on ifchannel, Trigger SGRpt | |
697 | * message on RP path upon prune timer expiry. | |
698 | */ | |
699 | ch->ifjoin_state = PIM_IFJOIN_PRUNE; | |
b456bceb DS |
700 | if (ch->upstream) { |
701 | struct pim_upstream *parent = | |
702 | ch->upstream->parent; | |
703 | ||
9b29ea95 DS |
704 | pim_upstream_update_join_desired(pim_ifp->pim, |
705 | ch->upstream); | |
b456bceb DS |
706 | |
707 | pim_jp_agg_single_upstream_send(&parent->rpf, | |
996c9314 | 708 | parent, true); |
d0c866d0 | 709 | /* |
710 | * SGRpt prune pending expiry has to install | |
711 | * SG entry with empty olist to drop the SG | |
712 | * traffic incase no other intf exists. | |
713 | * On that scenario, SG entry wouldn't have | |
714 | * got installed until Prune pending timer | |
715 | * expired. So install now. | |
716 | */ | |
717 | pim_channel_del_oif( | |
718 | ch->upstream->channel_oil, ifp, | |
719 | PIM_OIF_FLAG_PROTO_STAR, __func__); | |
720 | if (!ch->upstream->channel_oil->installed) | |
721 | pim_upstream_mroute_add( | |
722 | ch->upstream->channel_oil, | |
48c320d2 | 723 | __func__); |
b456bceb | 724 | } |
c206937b | 725 | } |
d62a17ae | 726 | /* from here ch may have been deleted */ |
d62a17ae | 727 | } |
12e41d03 DL |
728 | } |
729 | ||
d62a17ae | 730 | static void check_recv_upstream(int is_join, struct interface *recv_ifp, |
2b844385 | 731 | pim_addr upstream, pim_sgaddr *sg, |
d62a17ae | 732 | uint8_t source_flags, int holdtime) |
12e41d03 | 733 | { |
d62a17ae | 734 | struct pim_upstream *up; |
9b29ea95 | 735 | struct pim_interface *pim_ifp = recv_ifp->info; |
2b844385 | 736 | pim_addr rpf_addr; |
d62a17ae | 737 | |
738 | /* Upstream (S,G) in Joined state ? */ | |
9b29ea95 | 739 | up = pim_upstream_find(pim_ifp->pim, sg); |
d62a17ae | 740 | if (!up) |
741 | return; | |
742 | if (up->join_state != PIM_UPSTREAM_JOINED) | |
743 | return; | |
744 | ||
745 | /* Upstream (S,G) in Joined state */ | |
746 | ||
747 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) { | |
748 | /* RPF'(S,G) not found */ | |
15569c58 DA |
749 | zlog_warn("%s %s: RPF'%s not found", __FILE__, __func__, |
750 | up->sg_str); | |
d62a17ae | 751 | return; |
752 | } | |
753 | ||
2b844385 DL |
754 | rpf_addr = pim_addr_from_prefix(&up->rpf.rpf_addr); |
755 | ||
d62a17ae | 756 | /* upstream directed to RPF'(S,G) ? */ |
2b844385 | 757 | if (pim_addr_cmp(upstream, rpf_addr)) { |
d62a17ae | 758 | zlog_warn( |
2b844385 DL |
759 | "%s %s: (S,G)=%s upstream=%pPAs not directed to RPF'(S,G)=%pPAs on interface %s", |
760 | __FILE__, __func__, up->sg_str, &upstream, &rpf_addr, | |
15569c58 | 761 | recv_ifp->name); |
d62a17ae | 762 | return; |
763 | } | |
764 | /* upstream directed to RPF'(S,G) */ | |
765 | ||
766 | if (is_join) { | |
767 | /* Join(S,G) to RPF'(S,G) */ | |
fd3af229 | 768 | pim_upstream_join_suppress(up, up->rpf.rpf_addr, holdtime); |
d62a17ae | 769 | return; |
770 | } | |
771 | ||
772 | /* Prune to RPF'(S,G) */ | |
773 | ||
774 | if (source_flags & PIM_RPT_BIT_MASK) { | |
775 | if (source_flags & PIM_WILDCARD_BIT_MASK) { | |
776 | /* Prune(*,G) to RPF'(S,G) */ | |
777 | pim_upstream_join_timer_decrease_to_t_override( | |
778 | "Prune(*,G)", up); | |
779 | return; | |
780 | } | |
781 | ||
782 | /* Prune(S,G,rpt) to RPF'(S,G) */ | |
783 | pim_upstream_join_timer_decrease_to_t_override("Prune(S,G,rpt)", | |
784 | up); | |
785 | return; | |
786 | } | |
787 | ||
788 | /* Prune(S,G) to RPF'(S,G) */ | |
789 | pim_upstream_join_timer_decrease_to_t_override("Prune(S,G)", up); | |
12e41d03 DL |
790 | } |
791 | ||
d62a17ae | 792 | static int nonlocal_upstream(int is_join, struct interface *recv_ifp, |
2b844385 | 793 | pim_addr upstream, pim_sgaddr *sg, |
d62a17ae | 794 | uint8_t source_flags, uint16_t holdtime) |
12e41d03 | 795 | { |
d62a17ae | 796 | struct pim_interface *recv_pim_ifp; |
797 | int is_local; /* boolean */ | |
798 | ||
799 | recv_pim_ifp = recv_ifp->info; | |
df5dfb77 | 800 | assert(recv_pim_ifp); |
d62a17ae | 801 | |
2b844385 | 802 | is_local = !pim_addr_cmp(upstream, recv_pim_ifp->primary_address); |
d62a17ae | 803 | |
804 | if (is_local) | |
805 | return 0; | |
806 | ||
2b844385 DL |
807 | if (PIM_DEBUG_PIM_TRACE_DETAIL) |
808 | zlog_warn( | |
809 | "%s: recv %s (S,G)=%pSG to non-local upstream=%pPAs on %s", | |
810 | __func__, is_join ? "join" : "prune", sg, &upstream, | |
811 | recv_ifp->name); | |
d62a17ae | 812 | |
813 | /* | |
814 | * Since recv upstream addr was not directed to our primary | |
815 | * address, check if we should react to it in any way. | |
816 | */ | |
817 | check_recv_upstream(is_join, recv_ifp, upstream, sg, source_flags, | |
818 | holdtime); | |
819 | ||
820 | return 1; /* non-local */ | |
12e41d03 DL |
821 | } |
822 | ||
94e3f3e5 AK |
823 | static void pim_ifchannel_ifjoin_handler(struct pim_ifchannel *ch, |
824 | struct pim_interface *pim_ifp) | |
825 | { | |
15569c58 | 826 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_JOIN); |
94e3f3e5 AK |
827 | PIM_IF_FLAG_UNSET_S_G_RPT(ch->flags); |
828 | /* check if the interface qualifies as an immediate | |
829 | * OIF | |
830 | */ | |
831 | if (pim_upstream_evaluate_join_desired_interface( | |
832 | ch->upstream, ch, | |
833 | NULL /*starch*/)) { | |
834 | pim_channel_add_oif(ch->upstream->channel_oil, | |
835 | ch->interface, | |
836 | PIM_OIF_FLAG_PROTO_PIM, | |
837 | __func__); | |
838 | pim_upstream_update_join_desired(pim_ifp->pim, | |
839 | ch->upstream); | |
840 | } | |
841 | } | |
842 | ||
843 | ||
2b844385 DL |
844 | void pim_ifchannel_join_add(struct interface *ifp, pim_addr neigh_addr, |
845 | pim_addr upstream, pim_sgaddr *sg, | |
d62a17ae | 846 | uint8_t source_flags, uint16_t holdtime) |
12e41d03 | 847 | { |
d62a17ae | 848 | struct pim_interface *pim_ifp; |
849 | struct pim_ifchannel *ch; | |
850 | ||
851 | if (nonlocal_upstream(1 /* join */, ifp, upstream, sg, source_flags, | |
852 | holdtime)) { | |
853 | return; | |
854 | } | |
855 | ||
0885a9f1 DS |
856 | ch = pim_ifchannel_add(ifp, sg, source_flags, |
857 | PIM_UPSTREAM_FLAG_MASK_SRC_PIM); | |
d62a17ae | 858 | |
12e41d03 | 859 | /* |
d62a17ae | 860 | RFC 4601: 4.6.1. (S,G) Assert Message State Machine |
861 | ||
862 | Transitions from "I am Assert Loser" State | |
12e41d03 | 863 | |
d62a17ae | 864 | Receive Join(S,G) on Interface I |
12e41d03 | 865 | |
d62a17ae | 866 | We receive a Join(S,G) that has the Upstream Neighbor Address |
867 | field set to my primary IP address on interface I. The action is | |
868 | to transition to NoInfo state, delete this (S,G) assert state | |
869 | (Actions A5 below), and allow the normal PIM Join/Prune mechanisms | |
870 | to operate. | |
12e41d03 | 871 | |
d62a17ae | 872 | Notice: The nonlocal_upstream() test above ensures the upstream |
873 | address of the join message is our primary address. | |
12e41d03 | 874 | */ |
d62a17ae | 875 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { |
41490e0e | 876 | zlog_warn("%s: Assert Loser recv Join%s from %pPA on %s", |
9bb93fa0 | 877 | __func__, ch->sg_str, &neigh_addr, ifp->name); |
d62a17ae | 878 | |
879 | assert_action_a5(ch); | |
880 | } | |
881 | ||
882 | pim_ifp = ifp->info; | |
df5dfb77 | 883 | assert(pim_ifp); |
d62a17ae | 884 | |
885 | switch (ch->ifjoin_state) { | |
886 | case PIM_IFJOIN_NOINFO: | |
15569c58 | 887 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_JOIN); |
d62a17ae | 888 | if (pim_macro_chisin_oiflist(ch)) { |
9b29ea95 DS |
889 | pim_upstream_inherited_olist(pim_ifp->pim, |
890 | ch->upstream); | |
d62a17ae | 891 | pim_forward_start(ch); |
892 | } | |
893 | /* | |
894 | * If we are going to be a LHR, we need to note it | |
895 | */ | |
448139e7 AK |
896 | if (ch->upstream->parent && |
897 | (PIM_UPSTREAM_FLAG_TEST_CAN_BE_LHR( | |
898 | ch->upstream->parent->flags)) | |
d62a17ae | 899 | && !(ch->upstream->flags |
900 | & PIM_UPSTREAM_FLAG_MASK_SRC_LHR)) { | |
901 | pim_upstream_ref(ch->upstream, | |
902 | PIM_UPSTREAM_FLAG_MASK_SRC_LHR, | |
15569c58 | 903 | __func__); |
d62a17ae | 904 | pim_upstream_keep_alive_timer_start( |
19b807ca | 905 | ch->upstream, pim_ifp->pim->keep_alive_time); |
d62a17ae | 906 | } |
907 | break; | |
908 | case PIM_IFJOIN_JOIN: | |
df5dfb77 | 909 | assert(!ch->t_ifjoin_prune_pending_timer); |
d62a17ae | 910 | |
911 | /* | |
912 | In the JOIN state ch->t_ifjoin_expiry_timer may be NULL due to | |
913 | a | |
914 | previously received join message with holdtime=0xFFFF. | |
915 | */ | |
916 | if (ch->t_ifjoin_expiry_timer) { | |
917 | unsigned long remain = thread_timer_remain_second( | |
918 | ch->t_ifjoin_expiry_timer); | |
919 | if (remain > holdtime) { | |
920 | /* | |
921 | RFC 4601: 4.5.3. Receiving (S,G) Join/Prune | |
922 | Messages | |
923 | ||
924 | Transitions from Join State | |
925 | ||
926 | The (S,G) downstream state machine on | |
927 | interface I remains in | |
928 | Join state, and the Expiry Timer (ET) is | |
929 | restarted, set to | |
930 | maximum of its current value and the HoldTime | |
931 | from the | |
932 | triggering Join/Prune message. | |
933 | ||
934 | Conclusion: Do not change the ET if the | |
935 | current value is | |
936 | higher than the received join holdtime. | |
937 | */ | |
938 | return; | |
939 | } | |
940 | } | |
941 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
942 | break; | |
943 | case PIM_IFJOIN_PRUNE: | |
265aabf8 | 944 | if (source_flags & PIM_ENCODE_RPT_BIT) { |
15569c58 | 945 | pim_ifchannel_ifjoin_switch(__func__, ch, |
d62a17ae | 946 | PIM_IFJOIN_NOINFO); |
265aabf8 | 947 | THREAD_OFF(ch->t_ifjoin_expiry_timer); |
948 | delete_on_noinfo(ch); | |
949 | return; | |
950 | } else | |
94e3f3e5 | 951 | pim_ifchannel_ifjoin_handler(ch, pim_ifp); |
d62a17ae | 952 | break; |
953 | case PIM_IFJOIN_PRUNE_PENDING: | |
48484e58 | 954 | /* |
955 | * Transitions from Prune-Pending State (Receive Join) | |
956 | * RFC 7761 Sec 4.5.2: | |
957 | * The (S,G) downstream state machine on interface I | |
958 | * transitions to the Join state. The Prune-Pending Timer is | |
959 | * canceled (without triggering an expiry event). The | |
960 | * Expiry Timer (ET) is restarted and is then set to the | |
961 | * maximum of its current value and the HoldTime from the | |
962 | * triggering Join/Prune message. | |
963 | */ | |
d62a17ae | 964 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); |
877ebdf0 | 965 | |
966 | /* Check if SGRpt join Received */ | |
2a27f13b DL |
967 | if ((source_flags & PIM_ENCODE_RPT_BIT) && |
968 | !pim_addr_is_any(sg->src)) { | |
48484e58 | 969 | /* |
970 | * Transitions from Prune-Pending State (Rcv SGRpt Join) | |
971 | * RFC 7761 Sec 4.5.3: | |
972 | * The (S,G,rpt) downstream state machine on interface | |
973 | * I transitions to the NoInfo state.The ET and PPT are | |
974 | * cancelled. | |
975 | */ | |
d62a17ae | 976 | THREAD_OFF(ch->t_ifjoin_expiry_timer); |
15569c58 | 977 | pim_ifchannel_ifjoin_switch(__func__, ch, |
d62a17ae | 978 | PIM_IFJOIN_NOINFO); |
48484e58 | 979 | return; |
980 | } | |
981 | ||
982 | pim_ifchannel_ifjoin_handler(ch, pim_ifp); | |
983 | ||
984 | if (ch->t_ifjoin_expiry_timer) { | |
985 | unsigned long remain = thread_timer_remain_second( | |
986 | ch->t_ifjoin_expiry_timer); | |
987 | ||
988 | if (remain > holdtime) | |
989 | return; | |
94e3f3e5 | 990 | } |
b206dc55 | 991 | THREAD_OFF(ch->t_ifjoin_expiry_timer); |
48484e58 | 992 | |
d62a17ae | 993 | break; |
994 | case PIM_IFJOIN_PRUNE_TMP: | |
995 | break; | |
996 | case PIM_IFJOIN_PRUNE_PENDING_TMP: | |
997 | break; | |
998 | } | |
999 | ||
1000 | if (holdtime != 0xFFFF) { | |
36417fcc DS |
1001 | thread_add_timer(router->master, on_ifjoin_expiry_timer, ch, |
1002 | holdtime, &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 1003 | } |
12e41d03 DL |
1004 | } |
1005 | ||
2b844385 | 1006 | void pim_ifchannel_prune(struct interface *ifp, pim_addr upstream, |
6fff2cc6 | 1007 | pim_sgaddr *sg, uint8_t source_flags, |
12e41d03 DL |
1008 | uint16_t holdtime) |
1009 | { | |
d62a17ae | 1010 | struct pim_ifchannel *ch; |
1011 | struct pim_interface *pim_ifp; | |
1012 | int jp_override_interval_msec; | |
1405c852 | 1013 | |
d62a17ae | 1014 | if (nonlocal_upstream(0 /* prune */, ifp, upstream, sg, source_flags, |
1015 | holdtime)) { | |
1016 | return; | |
1017 | } | |
1018 | ||
1019 | ch = pim_ifchannel_find(ifp, sg); | |
1020 | if (!ch && !(source_flags & PIM_ENCODE_RPT_BIT)) { | |
23fc858a | 1021 | if (PIM_DEBUG_PIM_TRACE) |
98a81d2b DL |
1022 | zlog_debug("%s: Received prune with no relevant ifchannel %s%pSG state: %d", |
1023 | __func__, ifp->name, sg, | |
1024 | source_flags); | |
d62a17ae | 1025 | return; |
1026 | } | |
1027 | ||
0885a9f1 DS |
1028 | ch = pim_ifchannel_add(ifp, sg, source_flags, |
1029 | PIM_UPSTREAM_FLAG_MASK_SRC_PIM); | |
d62a17ae | 1030 | |
1031 | pim_ifp = ifp->info; | |
1032 | ||
1033 | switch (ch->ifjoin_state) { | |
1034 | case PIM_IFJOIN_NOINFO: | |
1035 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1036 | if (!(source_flags & PIM_ENCODE_WC_BIT)) | |
1037 | PIM_IF_FLAG_SET_S_G_RPT(ch->flags); | |
1038 | ||
1039 | ch->ifjoin_state = PIM_IFJOIN_PRUNE_PENDING; | |
1040 | if (listcount(pim_ifp->pim_neighbor_list) > 1) | |
1041 | jp_override_interval_msec = | |
1042 | pim_if_jp_override_interval_msec(ifp); | |
1043 | else | |
1044 | jp_override_interval_msec = | |
1045 | 0; /* schedule to expire immediately */ | |
1046 | /* If we called ifjoin_prune() directly instead, care | |
1047 | should | |
1048 | be taken not to use "ch" afterwards since it would be | |
1049 | deleted. */ | |
1050 | ||
1051 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
1052 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
1053 | thread_add_timer_msec( | |
36417fcc DS |
1054 | router->master, on_ifjoin_prune_pending_timer, |
1055 | ch, jp_override_interval_msec, | |
d62a17ae | 1056 | &ch->t_ifjoin_prune_pending_timer); |
36417fcc DS |
1057 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1058 | ch, holdtime, | |
1059 | &ch->t_ifjoin_expiry_timer); | |
9b29ea95 DS |
1060 | pim_upstream_update_join_desired(pim_ifp->pim, |
1061 | ch->upstream); | |
d62a17ae | 1062 | } |
1063 | break; | |
1064 | case PIM_IFJOIN_PRUNE_PENDING: | |
1065 | /* nothing to do */ | |
1066 | break; | |
1067 | case PIM_IFJOIN_JOIN: | |
48484e58 | 1068 | /* |
1069 | * The (S,G) downstream state machine on interface I | |
1070 | * transitions to the Prune-Pending state. The | |
1071 | * Prune-Pending Timer is started. It is set to the | |
1072 | * J/P_Override_Interval(I) if the router has more than one | |
1073 | * neighbor on that interface; otherwise, it is set to zero, | |
1074 | * causing it to expire immediately. | |
1075 | */ | |
d62a17ae | 1076 | |
15569c58 | 1077 | pim_ifchannel_ifjoin_switch(__func__, ch, |
d62a17ae | 1078 | PIM_IFJOIN_PRUNE_PENDING); |
1079 | ||
1080 | if (listcount(pim_ifp->pim_neighbor_list) > 1) | |
1081 | jp_override_interval_msec = | |
1082 | pim_if_jp_override_interval_msec(ifp); | |
1083 | else | |
1084 | jp_override_interval_msec = | |
1085 | 0; /* schedule to expire immediately */ | |
1086 | /* If we called ifjoin_prune() directly instead, care should | |
1087 | be taken not to use "ch" afterwards since it would be | |
1088 | deleted. */ | |
1089 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
36417fcc DS |
1090 | thread_add_timer_msec(router->master, |
1091 | on_ifjoin_prune_pending_timer, ch, | |
d62a17ae | 1092 | jp_override_interval_msec, |
1093 | &ch->t_ifjoin_prune_pending_timer); | |
1094 | break; | |
1095 | case PIM_IFJOIN_PRUNE: | |
1096 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1097 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
d0c866d0 | 1098 | /* |
1099 | * While in Prune State, Receive SGRpt Prune. | |
1100 | * RFC 7761 Sec 4.5.3: | |
1101 | * The (S,G,rpt) downstream state machine on interface I | |
1102 | * remains in Prune state. The Expiry Timer (ET) is | |
1103 | * restarted and is then set to the maximum of its | |
1104 | * current value and the HoldTime from the triggering | |
1105 | * Join/Prune message. | |
1106 | */ | |
1107 | if (ch->t_ifjoin_expiry_timer) { | |
1108 | unsigned long rem = thread_timer_remain_second( | |
1109 | ch->t_ifjoin_expiry_timer); | |
1110 | ||
1111 | if (rem > holdtime) | |
1112 | return; | |
1113 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
1114 | } | |
1115 | ||
36417fcc DS |
1116 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1117 | ch, holdtime, | |
1118 | &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 1119 | } |
1120 | break; | |
1121 | case PIM_IFJOIN_PRUNE_TMP: | |
1122 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1123 | ch->ifjoin_state = PIM_IFJOIN_PRUNE; | |
1124 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
36417fcc DS |
1125 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1126 | ch, holdtime, | |
1127 | &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 1128 | } |
1129 | break; | |
1130 | case PIM_IFJOIN_PRUNE_PENDING_TMP: | |
1131 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1132 | ch->ifjoin_state = PIM_IFJOIN_PRUNE_PENDING; | |
1133 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
36417fcc DS |
1134 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1135 | ch, holdtime, | |
1136 | &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 1137 | } |
1138 | break; | |
1139 | } | |
12e41d03 DL |
1140 | } |
1141 | ||
6fff2cc6 DL |
1142 | int pim_ifchannel_local_membership_add(struct interface *ifp, pim_sgaddr *sg, |
1143 | bool is_vxlan) | |
12e41d03 | 1144 | { |
d62a17ae | 1145 | struct pim_ifchannel *ch, *starch; |
1146 | struct pim_interface *pim_ifp; | |
43e40fdf | 1147 | struct pim_instance *pim; |
448139e7 | 1148 | int up_flags; |
d62a17ae | 1149 | |
1150 | /* PIM enabled on interface? */ | |
1151 | pim_ifp = ifp->info; | |
78b0c6bf DS |
1152 | if (!pim_ifp) { |
1153 | if (PIM_DEBUG_EVENTS) | |
98a81d2b DL |
1154 | zlog_debug("%s:%pSG Expected pim interface setup for %s", |
1155 | __func__, sg, ifp->name); | |
d62a17ae | 1156 | return 0; |
78b0c6bf DS |
1157 | } |
1158 | ||
b6fcc0b7 | 1159 | if (!pim_ifp->pim_enable) { |
78b0c6bf | 1160 | if (PIM_DEBUG_EVENTS) |
98a81d2b DL |
1161 | zlog_debug("%s:%pSG PIM is not configured on this interface %s", |
1162 | __func__, sg, ifp->name); | |
d62a17ae | 1163 | return 0; |
78b0c6bf | 1164 | } |
d62a17ae | 1165 | |
43e40fdf DS |
1166 | pim = pim_ifp->pim; |
1167 | ||
d62a17ae | 1168 | /* skip (*,G) ch creation if G is of type SSM */ |
2a27f13b | 1169 | if (pim_addr_is_any(sg->src)) { |
6f439a70 | 1170 | if (pim_is_grp_ssm(pim, sg->grp)) { |
d62a17ae | 1171 | if (PIM_DEBUG_PIM_EVENTS) |
98a81d2b DL |
1172 | zlog_debug("%s: local membership (S,G)=%pSG ignored as group is SSM", |
1173 | __func__, sg); | |
d62a17ae | 1174 | return 1; |
1175 | } | |
1176 | } | |
1177 | ||
17823cdd DS |
1178 | /* vxlan term mroutes use ipmr-lo as local member to |
1179 | * pull down multicast vxlan tunnel traffic | |
1180 | */ | |
448139e7 AK |
1181 | up_flags = is_vxlan ? PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM : |
1182 | PIM_UPSTREAM_FLAG_MASK_SRC_IGMP; | |
1183 | ch = pim_ifchannel_add(ifp, sg, 0, up_flags); | |
d62a17ae | 1184 | |
1185 | ifmembership_set(ch, PIM_IFMEMBERSHIP_INCLUDE); | |
1186 | ||
2a27f13b | 1187 | if (pim_addr_is_any(sg->src)) { |
9b29ea95 | 1188 | struct pim_upstream *up = pim_upstream_find(pim, sg); |
d62a17ae | 1189 | struct pim_upstream *child; |
1190 | struct listnode *up_node; | |
1191 | ||
1192 | starch = ch; | |
1193 | ||
1194 | for (ALL_LIST_ELEMENTS_RO(up->sources, up_node, child)) { | |
1195 | if (PIM_DEBUG_EVENTS) | |
1196 | zlog_debug("%s %s: IGMP (S,G)=%s(%s) from %s", | |
5e81f5dd DS |
1197 | __FILE__, __func__, child->sg_str, |
1198 | ifp->name, up->sg_str); | |
d62a17ae | 1199 | |
660b0442 | 1200 | if (!child->rpf.source_nexthop.interface) { |
1201 | /* when iif unknown, do not inherit */ | |
1202 | if (PIM_DEBUG_EVENTS) | |
1203 | zlog_debug( | |
1204 | "Skipped (S,G)=%s(%s) from %s: no iif", | |
1205 | child->sg_str, ifp->name, | |
1206 | up->sg_str); | |
1207 | continue; | |
1208 | } | |
1209 | ||
d62a17ae | 1210 | ch = pim_ifchannel_find(ifp, &child->sg); |
1211 | if (pim_upstream_evaluate_join_desired_interface( | |
1212 | child, ch, starch)) { | |
1213 | pim_channel_add_oif(child->channel_oil, ifp, | |
1b249e70 AK |
1214 | PIM_OIF_FLAG_PROTO_STAR, |
1215 | __func__); | |
a53a9b3e | 1216 | pim_upstream_update_join_desired(pim, child); |
d62a17ae | 1217 | } |
1218 | } | |
1219 | ||
43e40fdf | 1220 | if (pim->spt.switchover == PIM_SPT_INFINITY) { |
f88df3a6 | 1221 | if (pim->spt.plist) { |
d62a17ae | 1222 | struct prefix_list *plist = prefix_list_lookup( |
43e40fdf | 1223 | AFI_IP, pim->spt.plist); |
d62a17ae | 1224 | struct prefix g; |
d62a17ae | 1225 | |
c631920c | 1226 | pim_addr_to_prefix(&g, up->sg.grp); |
d62a17ae | 1227 | if (prefix_list_apply(plist, &g) |
1228 | == PREFIX_DENY) { | |
1229 | pim_channel_add_oif( | |
43e40fdf | 1230 | up->channel_oil, pim->regiface, |
80a82b56 | 1231 | PIM_OIF_FLAG_PROTO_GM, |
1b249e70 | 1232 | __func__); |
d62a17ae | 1233 | } |
1234 | } | |
1235 | } else | |
43e40fdf | 1236 | pim_channel_add_oif(up->channel_oil, pim->regiface, |
80a82b56 | 1237 | PIM_OIF_FLAG_PROTO_GM, __func__); |
d62a17ae | 1238 | } |
1239 | ||
1240 | return 1; | |
12e41d03 DL |
1241 | } |
1242 | ||
6fff2cc6 | 1243 | void pim_ifchannel_local_membership_del(struct interface *ifp, pim_sgaddr *sg) |
12e41d03 | 1244 | { |
d62a17ae | 1245 | struct pim_ifchannel *starch, *ch, *orig; |
1246 | struct pim_interface *pim_ifp; | |
1247 | ||
1248 | /* PIM enabled on interface? */ | |
1249 | pim_ifp = ifp->info; | |
1250 | if (!pim_ifp) | |
1251 | return; | |
b6fcc0b7 | 1252 | if (!pim_ifp->pim_enable) |
d62a17ae | 1253 | return; |
1254 | ||
1255 | orig = ch = pim_ifchannel_find(ifp, sg); | |
1256 | if (!ch) | |
1257 | return; | |
d62a17ae | 1258 | ifmembership_set(ch, PIM_IFMEMBERSHIP_NOINFO); |
1259 | ||
2a27f13b | 1260 | if (pim_addr_is_any(sg->src)) { |
9b29ea95 | 1261 | struct pim_upstream *up = pim_upstream_find(pim_ifp->pim, sg); |
d62a17ae | 1262 | struct pim_upstream *child; |
1263 | struct listnode *up_node, *up_nnode; | |
1264 | ||
1265 | starch = ch; | |
1266 | ||
1267 | for (ALL_LIST_ELEMENTS(up->sources, up_node, up_nnode, child)) { | |
1268 | struct channel_oil *c_oil = child->channel_oil; | |
1269 | struct pim_ifchannel *chchannel = | |
1270 | pim_ifchannel_find(ifp, &child->sg); | |
dc7204b7 A |
1271 | |
1272 | pim_ifp = ifp->info; | |
d62a17ae | 1273 | |
1274 | if (PIM_DEBUG_EVENTS) | |
1275 | zlog_debug("%s %s: Prune(S,G)=%s(%s) from %s", | |
5e81f5dd DS |
1276 | __FILE__, __func__, up->sg_str, |
1277 | ifp->name, child->sg_str); | |
d62a17ae | 1278 | |
1279 | ch = pim_ifchannel_find(ifp, &child->sg); | |
d62a17ae | 1280 | /* |
1281 | * If the S,G has no if channel and the c_oil still | |
1282 | * has output here then the *,G was supplying the | |
1283 | * implied | |
1284 | * if channel. So remove it. | |
1285 | */ | |
1537a668 AK |
1286 | if (!pim_upstream_evaluate_join_desired_interface( |
1287 | child, ch, starch) || | |
1288 | (!chchannel && | |
a9338fa4 | 1289 | oil_if_has(c_oil, pim_ifp->mroute_vif_index))) { |
1537a668 AK |
1290 | pim_channel_del_inherited_oif(c_oil, ifp, |
1291 | __func__); | |
1292 | } | |
d62a17ae | 1293 | |
1294 | /* Child node removal/ref count-- will happen as part of | |
1295 | * parent' delete_no_info */ | |
1296 | } | |
1297 | } | |
9046b170 MR |
1298 | |
1299 | /* Resettng the IGMP flags here */ | |
1300 | if (orig->upstream) | |
1301 | PIM_UPSTREAM_FLAG_UNSET_SRC_IGMP(orig->upstream->flags); | |
1302 | ||
1303 | PIM_IF_FLAG_UNSET_PROTO_IGMP(orig->flags); | |
1304 | ||
d62a17ae | 1305 | delete_on_noinfo(orig); |
12e41d03 DL |
1306 | } |
1307 | ||
1308 | void pim_ifchannel_update_could_assert(struct pim_ifchannel *ch) | |
1309 | { | |
d62a17ae | 1310 | int old_couldassert = |
1311 | PIM_FORCE_BOOLEAN(PIM_IF_FLAG_TEST_COULD_ASSERT(ch->flags)); | |
1312 | int new_couldassert = | |
1313 | PIM_FORCE_BOOLEAN(pim_macro_ch_could_assert_eval(ch)); | |
1314 | ||
1315 | if (new_couldassert == old_couldassert) | |
1316 | return; | |
1317 | ||
8e8be741 DL |
1318 | if (PIM_DEBUG_PIM_EVENTS) |
1319 | zlog_debug("%s: CouldAssert(%pPAs,%pPAs,%s) changed from %d to %d", | |
1320 | __func__, &ch->sg.src, &ch->sg.grp, | |
1321 | ch->interface->name, old_couldassert, | |
1322 | new_couldassert); | |
d62a17ae | 1323 | |
1324 | if (new_couldassert) { | |
2951a7a4 | 1325 | /* CouldAssert(S,G,I) switched from false to true */ |
d62a17ae | 1326 | PIM_IF_FLAG_SET_COULD_ASSERT(ch->flags); |
1327 | } else { | |
2951a7a4 | 1328 | /* CouldAssert(S,G,I) switched from true to false */ |
d62a17ae | 1329 | PIM_IF_FLAG_UNSET_COULD_ASSERT(ch->flags); |
1330 | ||
1331 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_WINNER) { | |
1332 | assert_action_a4(ch); | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | pim_ifchannel_update_my_assert_metric(ch); | |
12e41d03 DL |
1337 | } |
1338 | ||
1339 | /* | |
1340 | my_assert_metric may be affected by: | |
1341 | ||
1342 | CouldAssert(S,G) | |
1343 | pim_ifp->primary_address | |
1344 | rpf->source_nexthop.mrib_metric_preference; | |
1345 | rpf->source_nexthop.mrib_route_metric; | |
1346 | */ | |
1347 | void pim_ifchannel_update_my_assert_metric(struct pim_ifchannel *ch) | |
1348 | { | |
d62a17ae | 1349 | struct pim_assert_metric my_metric_new = |
1350 | pim_macro_ch_my_assert_metric_eval(ch); | |
1351 | ||
1352 | if (pim_assert_metric_match(&my_metric_new, &ch->ifassert_my_metric)) | |
1353 | return; | |
1354 | ||
efd66f7b | 1355 | if (PIM_DEBUG_PIM_EVENTS) |
d62a17ae | 1356 | zlog_debug( |
efd66f7b | 1357 | "%s: my_assert_metric(%pPAs,%pPAs,%s) changed from %u,%u,%u,%pPAs to %u,%u,%u,%pPAs", |
8e8be741 | 1358 | __func__, &ch->sg.src, &ch->sg.grp, ch->interface->name, |
d62a17ae | 1359 | ch->ifassert_my_metric.rpt_bit_flag, |
1360 | ch->ifassert_my_metric.metric_preference, | |
efd66f7b DL |
1361 | ch->ifassert_my_metric.route_metric, |
1362 | &ch->ifassert_my_metric.ip_address, | |
d62a17ae | 1363 | my_metric_new.rpt_bit_flag, |
1364 | my_metric_new.metric_preference, | |
efd66f7b | 1365 | my_metric_new.route_metric, &my_metric_new.ip_address); |
d62a17ae | 1366 | |
1367 | ch->ifassert_my_metric = my_metric_new; | |
1368 | ||
1369 | if (pim_assert_metric_better(&ch->ifassert_my_metric, | |
1370 | &ch->ifassert_winner_metric)) { | |
1371 | assert_action_a5(ch); | |
1372 | } | |
12e41d03 DL |
1373 | } |
1374 | ||
1375 | void pim_ifchannel_update_assert_tracking_desired(struct pim_ifchannel *ch) | |
1376 | { | |
d62a17ae | 1377 | int old_atd = PIM_FORCE_BOOLEAN( |
1378 | PIM_IF_FLAG_TEST_ASSERT_TRACKING_DESIRED(ch->flags)); | |
1379 | int new_atd = | |
1380 | PIM_FORCE_BOOLEAN(pim_macro_assert_tracking_desired_eval(ch)); | |
1381 | ||
1382 | if (new_atd == old_atd) | |
1383 | return; | |
1384 | ||
8e8be741 | 1385 | if (PIM_DEBUG_PIM_EVENTS) |
d62a17ae | 1386 | zlog_debug( |
8e8be741 DL |
1387 | "%s: AssertTrackingDesired(%pPAs,%pPAs,%s) changed from %d to %d", |
1388 | __func__, &ch->sg.src, &ch->sg.grp, ch->interface->name, | |
15569c58 | 1389 | old_atd, new_atd); |
d62a17ae | 1390 | |
1391 | if (new_atd) { | |
2951a7a4 | 1392 | /* AssertTrackingDesired(S,G,I) switched from false to true */ |
d62a17ae | 1393 | PIM_IF_FLAG_SET_ASSERT_TRACKING_DESIRED(ch->flags); |
1394 | } else { | |
2951a7a4 | 1395 | /* AssertTrackingDesired(S,G,I) switched from true to false */ |
d62a17ae | 1396 | PIM_IF_FLAG_UNSET_ASSERT_TRACKING_DESIRED(ch->flags); |
1397 | ||
1398 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { | |
1399 | assert_action_a5(ch); | |
1400 | } | |
1401 | } | |
12e41d03 | 1402 | } |
c8507a16 DS |
1403 | |
1404 | /* | |
1405 | * If we have a new pim interface, check to | |
1406 | * see if any of the pre-existing channels have | |
1407 | * their upstream out that way and turn on forwarding | |
1408 | * for that ifchannel then. | |
1409 | */ | |
d62a17ae | 1410 | void pim_ifchannel_scan_forward_start(struct interface *new_ifp) |
c8507a16 | 1411 | { |
d62a17ae | 1412 | struct pim_interface *new_pim_ifp = new_ifp->info; |
f88df3a6 | 1413 | struct pim_instance *pim = new_pim_ifp->pim; |
ad7b74c4 | 1414 | struct interface *ifp; |
d62a17ae | 1415 | |
451fda4f | 1416 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 1417 | struct pim_interface *loop_pim_ifp = ifp->info; |
d62a17ae | 1418 | struct pim_ifchannel *ch; |
1419 | ||
1420 | if (!loop_pim_ifp) | |
1421 | continue; | |
1422 | ||
1423 | if (new_pim_ifp == loop_pim_ifp) | |
1424 | continue; | |
1425 | ||
a2addae8 | 1426 | RB_FOREACH (ch, pim_ifchannel_rb, &loop_pim_ifp->ifchannel_rb) { |
d62a17ae | 1427 | if (ch->ifjoin_state == PIM_IFJOIN_JOIN) { |
1428 | struct pim_upstream *up = ch->upstream; | |
1429 | if ((!up->channel_oil) | |
1430 | && (up->rpf.source_nexthop | |
1431 | .interface == new_ifp)) | |
1432 | pim_forward_start(ch); | |
1433 | } | |
1434 | } | |
1435 | } | |
c8507a16 | 1436 | } |
220d8a49 DS |
1437 | |
1438 | /* | |
1439 | * Downstream per-interface (S,G,rpt) state machine | |
1440 | * states that we need to move (S,G,rpt) items | |
1441 | * into different states at the start of the | |
1442 | * reception of a *,G join as well, when | |
1443 | * we get End of Message | |
1444 | */ | |
d62a17ae | 1445 | void pim_ifchannel_set_star_g_join_state(struct pim_ifchannel *ch, int eom, |
c206937b | 1446 | uint8_t join) |
220d8a49 | 1447 | { |
ca6cb21b | 1448 | bool send_upstream_starg = false; |
d62a17ae | 1449 | struct pim_ifchannel *child; |
37736d08 | 1450 | struct listnode *ch_node, *nch_node; |
c206937b DS |
1451 | struct pim_instance *pim = |
1452 | ((struct pim_interface *)ch->interface->info)->pim; | |
ca6cb21b | 1453 | struct pim_upstream *starup = ch->upstream; |
d62a17ae | 1454 | |
1455 | if (PIM_DEBUG_PIM_TRACE) | |
1456 | zlog_debug( | |
5e81f5dd | 1457 | "%s: %s %s eom: %d join %u", __func__, |
d62a17ae | 1458 | pim_ifchannel_ifjoin_name(ch->ifjoin_state, ch->flags), |
1459 | ch->sg_str, eom, join); | |
1460 | if (!ch->sources) | |
1461 | return; | |
1462 | ||
37736d08 | 1463 | for (ALL_LIST_ELEMENTS(ch->sources, ch_node, nch_node, child)) { |
d62a17ae | 1464 | if (!PIM_IF_FLAG_TEST_S_G_RPT(child->flags)) |
1465 | continue; | |
1466 | ||
1467 | switch (child->ifjoin_state) { | |
1468 | case PIM_IFJOIN_NOINFO: | |
1469 | case PIM_IFJOIN_JOIN: | |
1470 | break; | |
1471 | case PIM_IFJOIN_PRUNE: | |
1472 | if (!eom) | |
1473 | child->ifjoin_state = PIM_IFJOIN_PRUNE_TMP; | |
1474 | break; | |
1475 | case PIM_IFJOIN_PRUNE_PENDING: | |
1476 | if (!eom) | |
1477 | child->ifjoin_state = | |
1478 | PIM_IFJOIN_PRUNE_PENDING_TMP; | |
1479 | break; | |
1480 | case PIM_IFJOIN_PRUNE_TMP: | |
1481 | case PIM_IFJOIN_PRUNE_PENDING_TMP: | |
37736d08 DS |
1482 | if (!eom) |
1483 | break; | |
1484 | ||
1485 | if (child->ifjoin_state == PIM_IFJOIN_PRUNE_PENDING_TMP) | |
1486 | THREAD_OFF(child->t_ifjoin_prune_pending_timer); | |
1487 | THREAD_OFF(child->t_ifjoin_expiry_timer); | |
37736d08 DS |
1488 | |
1489 | PIM_IF_FLAG_UNSET_S_G_RPT(child->flags); | |
1490 | child->ifjoin_state = PIM_IFJOIN_NOINFO; | |
1491 | ||
0cdbb2cf SP |
1492 | if ((I_am_RP(pim, child->sg.grp)) && |
1493 | (!pim_upstream_empty_inherited_olist( | |
1494 | child->upstream))) { | |
37736d08 DS |
1495 | pim_channel_add_oif( |
1496 | child->upstream->channel_oil, | |
1b249e70 AK |
1497 | ch->interface, PIM_OIF_FLAG_PROTO_STAR, |
1498 | __func__); | |
a53a9b3e AK |
1499 | pim_upstream_update_join_desired(pim, |
1500 | child->upstream); | |
c206937b | 1501 | } |
ca6cb21b | 1502 | send_upstream_starg = true; |
37736d08 DS |
1503 | |
1504 | delete_on_noinfo(child); | |
d62a17ae | 1505 | break; |
1506 | } | |
1405c852 | 1507 | } |
ca6cb21b DS |
1508 | |
1509 | if (send_upstream_starg) | |
1510 | pim_jp_agg_single_upstream_send(&starup->rpf, starup, true); | |
220d8a49 | 1511 | } |