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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 | |
d62a17ae | 65 | if (ntohl(ch1->sg.grp.s_addr) < ntohl(ch2->sg.grp.s_addr)) |
66 | return -1; | |
3fdfd943 | 67 | |
d62a17ae | 68 | if (ntohl(ch1->sg.grp.s_addr) > ntohl(ch2->sg.grp.s_addr)) |
69 | return 1; | |
3fdfd943 | 70 | |
d62a17ae | 71 | if (ntohl(ch1->sg.src.s_addr) < ntohl(ch2->sg.src.s_addr)) |
72 | return -1; | |
3fdfd943 | 73 | |
d62a17ae | 74 | if (ntohl(ch1->sg.src.s_addr) > ntohl(ch2->sg.src.s_addr)) |
75 | return 1; | |
3fdfd943 | 76 | |
d62a17ae | 77 | return 0; |
3fdfd943 DS |
78 | } |
79 | ||
1a10fc74 DS |
80 | /* |
81 | * A (*,G) or a (*,*) is going away | |
82 | * remove the parent pointer from | |
83 | * those pointing at us | |
84 | */ | |
d62a17ae | 85 | static void pim_ifchannel_remove_children(struct pim_ifchannel *ch) |
1a10fc74 | 86 | { |
d62a17ae | 87 | struct pim_ifchannel *child; |
1a10fc74 | 88 | |
d62a17ae | 89 | if (!ch->sources) |
90 | return; | |
1a10fc74 | 91 | |
d62a17ae | 92 | while (!list_isempty(ch->sources)) { |
93 | child = listnode_head(ch->sources); | |
94 | child->parent = NULL; | |
95 | listnode_delete(ch->sources, child); | |
96 | } | |
1a10fc74 DS |
97 | } |
98 | ||
99 | /* | |
100 | * A (*,G) or a (*,*) is being created | |
101 | * find all the children that would point | |
102 | * at us. | |
103 | */ | |
d62a17ae | 104 | static void pim_ifchannel_find_new_children(struct pim_ifchannel *ch) |
1a10fc74 | 105 | { |
d62a17ae | 106 | struct pim_interface *pim_ifp = ch->interface->info; |
107 | struct pim_ifchannel *child; | |
d62a17ae | 108 | |
109 | // Basic Sanity that we are not being silly | |
110 | if ((ch->sg.src.s_addr != INADDR_ANY) | |
111 | && (ch->sg.grp.s_addr != INADDR_ANY)) | |
112 | return; | |
113 | ||
114 | if ((ch->sg.src.s_addr == INADDR_ANY) | |
115 | && (ch->sg.grp.s_addr == INADDR_ANY)) | |
116 | return; | |
117 | ||
a2addae8 | 118 | RB_FOREACH (child, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) { |
d62a17ae | 119 | if ((ch->sg.grp.s_addr != INADDR_ANY) |
120 | && (child->sg.grp.s_addr == ch->sg.grp.s_addr) | |
121 | && (child != ch)) { | |
122 | child->parent = ch; | |
123 | listnode_add_sort(ch->sources, child); | |
124 | } | |
3fdfd943 | 125 | } |
1a10fc74 DS |
126 | } |
127 | ||
12e41d03 DL |
128 | void pim_ifchannel_delete(struct pim_ifchannel *ch) |
129 | { | |
d62a17ae | 130 | struct pim_interface *pim_ifp; |
0f31a82a | 131 | struct pim_upstream *up; |
d62a17ae | 132 | |
133 | pim_ifp = ch->interface->info; | |
134 | ||
b900ad16 AK |
135 | if (PIM_DEBUG_PIM_TRACE) |
136 | zlog_debug("%s: ifchannel entry %s(%s) del start", __func__, | |
137 | ch->sg_str, ch->interface->name); | |
138 | ||
22c35834 SK |
139 | if (PIM_I_am_DualActive(pim_ifp)) { |
140 | if (PIM_DEBUG_MLAG) | |
141 | zlog_debug( | |
142 | "%s: if-chnanel-%s is deleted from a Dual " | |
143 | "active Interface", | |
144 | __func__, ch->sg_str); | |
145 | /* Post Delete only if it is the last Dual-active Interface */ | |
146 | if (ch->upstream->dualactive_ifchannel_count == 1) { | |
147 | pim_mlag_up_local_del(pim_ifp->pim, ch->upstream); | |
148 | PIM_UPSTREAM_FLAG_UNSET_MLAG_INTERFACE( | |
149 | ch->upstream->flags); | |
150 | } | |
151 | ch->upstream->dualactive_ifchannel_count--; | |
152 | } | |
153 | ||
d62a17ae | 154 | if (ch->upstream->channel_oil) { |
155 | uint32_t mask = PIM_OIF_FLAG_PROTO_PIM; | |
156 | if (ch->upstream->flags & PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) | |
71056a69 | 157 | mask |= PIM_OIF_FLAG_PROTO_IGMP; |
d62a17ae | 158 | |
2164ed5d DS |
159 | /* |
160 | * A S,G RPT channel can have an empty oil, we also | |
161 | * need to take into account the fact that a ifchannel | |
162 | * might have been suppressing a *,G ifchannel from | |
163 | * being inherited. So let's figure out what | |
164 | * needs to be done here | |
165 | */ | |
71056a69 AK |
166 | if ((ch->sg.src.s_addr != INADDR_ANY) && |
167 | pim_upstream_evaluate_join_desired_interface( | |
168 | ch->upstream, ch, ch->parent)) | |
2164ed5d | 169 | pim_channel_add_oif(ch->upstream->channel_oil, |
71056a69 | 170 | ch->interface, |
1b249e70 AK |
171 | PIM_OIF_FLAG_PROTO_STAR, |
172 | __func__); | |
71056a69 AK |
173 | |
174 | pim_channel_del_oif(ch->upstream->channel_oil, | |
1b249e70 | 175 | ch->interface, mask, __func__); |
d62a17ae | 176 | /* |
177 | * Do we have any S,G's that are inheriting? | |
178 | * Nuke from on high too. | |
179 | */ | |
180 | if (ch->upstream->sources) { | |
181 | struct pim_upstream *child; | |
182 | struct listnode *up_node; | |
183 | ||
184 | for (ALL_LIST_ELEMENTS_RO(ch->upstream->sources, | |
185 | up_node, child)) | |
1537a668 AK |
186 | pim_channel_del_inherited_oif( |
187 | child->channel_oil, | |
188 | ch->interface, | |
189 | __func__); | |
d62a17ae | 190 | } |
191 | } | |
192 | ||
193 | /* | |
194 | * When this channel is removed | |
195 | * we need to find all our children | |
196 | * and make sure our pointers are fixed | |
197 | */ | |
198 | pim_ifchannel_remove_children(ch); | |
199 | ||
200 | if (ch->sources) | |
6a154c88 | 201 | list_delete(&ch->sources); |
d62a17ae | 202 | |
203 | listnode_delete(ch->upstream->ifchannels, ch); | |
204 | ||
0f31a82a | 205 | up = ch->upstream; |
d62a17ae | 206 | |
207 | /* upstream is common across ifchannels, check if upstream's | |
208 | ifchannel list is empty before deleting upstream_del | |
209 | ref count will take care of it. | |
210 | */ | |
e83f3b31 | 211 | if (ch->upstream->ref_count > 0) |
0f31a82a | 212 | up = pim_upstream_del(pim_ifp->pim, ch->upstream, __func__); |
e83f3b31 | 213 | |
889a75be DS |
214 | else { |
215 | if (PIM_DEBUG_PIM_TRACE) | |
5e81f5dd DS |
216 | zlog_debug( |
217 | "%s: Avoiding deletion of upstream with ref_count %d " | |
218 | "from ifchannel(%s): %s", | |
219 | __func__, ch->upstream->ref_count, | |
220 | ch->interface->name, ch->sg_str); | |
889a75be | 221 | } |
e83f3b31 | 222 | |
d62a17ae | 223 | ch->upstream = NULL; |
224 | ||
225 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
226 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
227 | THREAD_OFF(ch->t_ifassert_timer); | |
228 | ||
229 | if (ch->parent) { | |
230 | listnode_delete(ch->parent->sources, ch); | |
231 | ch->parent = NULL; | |
232 | } | |
ad7b74c4 DS |
233 | |
234 | RB_REMOVE(pim_ifchannel_rb, &pim_ifp->ifchannel_rb, ch); | |
d62a17ae | 235 | |
236 | if (PIM_DEBUG_PIM_TRACE) | |
6d7c0df5 DS |
237 | zlog_debug("%s: ifchannel entry %s(%s) is deleted ", __func__, |
238 | ch->sg_str, ch->interface->name); | |
d62a17ae | 239 | |
7692c5ae | 240 | XFREE(MTYPE_PIM_IFCHANNEL, ch); |
0f31a82a AK |
241 | |
242 | if (up) | |
243 | pim_upstream_update_join_desired(pim_ifp->pim, up); | |
12e41d03 | 244 | } |
cb24fec4 | 245 | |
d62a17ae | 246 | void pim_ifchannel_delete_all(struct interface *ifp) |
cb24fec4 | 247 | { |
d62a17ae | 248 | struct pim_interface *pim_ifp; |
ad7b74c4 | 249 | struct pim_ifchannel *ch; |
d62a17ae | 250 | |
251 | pim_ifp = ifp->info; | |
252 | if (!pim_ifp) | |
253 | return; | |
254 | ||
55cd0f61 DS |
255 | while (!RB_EMPTY(pim_ifchannel_rb, &pim_ifp->ifchannel_rb)) { |
256 | ch = RB_ROOT(pim_ifchannel_rb, &pim_ifp->ifchannel_rb); | |
257 | ||
15569c58 | 258 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_NOINFO); |
ad7b74c4 | 259 | pim_ifchannel_delete(ch); |
d62a17ae | 260 | } |
cb24fec4 | 261 | } |
d62a17ae | 262 | |
12e41d03 DL |
263 | static void delete_on_noinfo(struct pim_ifchannel *ch) |
264 | { | |
d62a17ae | 265 | if (ch->local_ifmembership == PIM_IFMEMBERSHIP_NOINFO |
266 | && ch->ifjoin_state == PIM_IFJOIN_NOINFO | |
267 | && ch->t_ifjoin_expiry_timer == NULL) | |
268 | pim_ifchannel_delete(ch); | |
12e41d03 DL |
269 | } |
270 | ||
d62a17ae | 271 | void pim_ifchannel_ifjoin_switch(const char *caller, struct pim_ifchannel *ch, |
12e41d03 DL |
272 | enum pim_ifjoin_state new_state) |
273 | { | |
d62a17ae | 274 | enum pim_ifjoin_state old_state = ch->ifjoin_state; |
9b29ea95 | 275 | struct pim_interface *pim_ifp = ch->interface->info; |
a53a9b3e | 276 | struct pim_ifchannel *child_ch; |
d62a17ae | 277 | |
278 | if (PIM_DEBUG_PIM_EVENTS) | |
279 | zlog_debug( | |
280 | "PIM_IFCHANNEL(%s): %s is switching from %s to %s", | |
281 | ch->interface->name, ch->sg_str, | |
282 | pim_ifchannel_ifjoin_name(ch->ifjoin_state, ch->flags), | |
283 | pim_ifchannel_ifjoin_name(new_state, 0)); | |
284 | ||
285 | ||
286 | if (old_state == new_state) { | |
287 | if (PIM_DEBUG_PIM_EVENTS) { | |
288 | zlog_debug( | |
289 | "%s calledby %s: non-transition on state %d (%s)", | |
5e81f5dd | 290 | __func__, caller, new_state, |
d62a17ae | 291 | pim_ifchannel_ifjoin_name(new_state, 0)); |
6578dfa3 | 292 | } |
d62a17ae | 293 | return; |
294 | } | |
295 | ||
296 | ch->ifjoin_state = new_state; | |
297 | ||
298 | if (ch->sg.src.s_addr == INADDR_ANY) { | |
299 | struct pim_upstream *up = ch->upstream; | |
300 | struct pim_upstream *child; | |
301 | struct listnode *up_node; | |
302 | ||
303 | if (up) { | |
304 | if (ch->ifjoin_state == PIM_IFJOIN_NOINFO) { | |
305 | for (ALL_LIST_ELEMENTS_RO(up->sources, up_node, | |
306 | child)) { | |
307 | struct channel_oil *c_oil = | |
308 | child->channel_oil; | |
d62a17ae | 309 | |
310 | if (PIM_DEBUG_PIM_TRACE) | |
311 | zlog_debug( | |
312 | "%s %s: Prune(S,G)=%s from %s", | |
5e81f5dd | 313 | __FILE__, __func__, |
d62a17ae | 314 | child->sg_str, |
315 | up->sg_str); | |
316 | if (!c_oil) | |
317 | continue; | |
318 | ||
d62a17ae | 319 | /* |
320 | * If the S,G has no if channel and the | |
321 | * c_oil still | |
322 | * has output here then the *,G was | |
323 | * supplying the implied | |
324 | * if channel. So remove it. | |
d62a17ae | 325 | */ |
a88e628d DS |
326 | if (c_oil->oil.mfcc_ttls |
327 | [pim_ifp->mroute_vif_index]) | |
1537a668 | 328 | pim_channel_del_inherited_oif( |
d62a17ae | 329 | c_oil, ch->interface, |
1b249e70 | 330 | __func__); |
d62a17ae | 331 | } |
332 | } | |
333 | if (ch->ifjoin_state == PIM_IFJOIN_JOIN) { | |
334 | for (ALL_LIST_ELEMENTS_RO(up->sources, up_node, | |
335 | child)) { | |
336 | if (PIM_DEBUG_PIM_TRACE) | |
337 | zlog_debug( | |
338 | "%s %s: Join(S,G)=%s from %s", | |
5e81f5dd | 339 | __FILE__, __func__, |
d62a17ae | 340 | child->sg_str, |
341 | up->sg_str); | |
342 | ||
a53a9b3e AK |
343 | /* check if the channel can be |
344 | * inherited into the SG's OIL | |
345 | */ | |
346 | child_ch = pim_ifchannel_find( | |
347 | ch->interface, | |
348 | &child->sg); | |
349 | if (pim_upstream_eval_inherit_if( | |
350 | child, child_ch, ch)) { | |
d62a17ae | 351 | pim_channel_add_oif( |
352 | child->channel_oil, | |
353 | ch->interface, | |
1b249e70 AK |
354 | PIM_OIF_FLAG_PROTO_STAR, |
355 | __func__); | |
d62a17ae | 356 | pim_upstream_update_join_desired( |
9b29ea95 | 357 | pim_ifp->pim, child); |
d62a17ae | 358 | } |
359 | } | |
360 | } | |
6578dfa3 | 361 | } |
6578dfa3 | 362 | } |
d62a17ae | 363 | /* Transition to/from NOINFO ? */ |
364 | if ((old_state == PIM_IFJOIN_NOINFO) | |
365 | || (new_state == PIM_IFJOIN_NOINFO)) { | |
366 | ||
367 | if (PIM_DEBUG_PIM_EVENTS) { | |
368 | zlog_debug("PIM_IFCHANNEL_%s: (S,G)=%s on interface %s", | |
369 | ((new_state == PIM_IFJOIN_NOINFO) ? "DOWN" | |
370 | : "UP"), | |
371 | ch->sg_str, ch->interface->name); | |
372 | } | |
373 | ||
374 | /* | |
375 | Record uptime of state transition to/from NOINFO | |
376 | */ | |
377 | ch->ifjoin_creation = pim_time_monotonic_sec(); | |
378 | ||
9b29ea95 | 379 | pim_upstream_update_join_desired(pim_ifp->pim, ch->upstream); |
d62a17ae | 380 | pim_ifchannel_update_could_assert(ch); |
381 | pim_ifchannel_update_assert_tracking_desired(ch); | |
382 | } | |
12e41d03 DL |
383 | } |
384 | ||
d1e77284 | 385 | const char *pim_ifchannel_ifjoin_name(enum pim_ifjoin_state ifjoin_state, |
d62a17ae | 386 | int flags) |
12e41d03 | 387 | { |
d62a17ae | 388 | switch (ifjoin_state) { |
389 | case PIM_IFJOIN_NOINFO: | |
390 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) | |
c206937b | 391 | return "SGRpt(NI)"; |
d62a17ae | 392 | else |
393 | return "NOINFO"; | |
d62a17ae | 394 | case PIM_IFJOIN_JOIN: |
395 | return "JOIN"; | |
d62a17ae | 396 | case PIM_IFJOIN_PRUNE: |
c206937b DS |
397 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
398 | return "SGRpt(P)"; | |
399 | else | |
400 | return "PRUNE"; | |
d62a17ae | 401 | case PIM_IFJOIN_PRUNE_PENDING: |
c206937b DS |
402 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
403 | return "SGRpt(PP)"; | |
404 | else | |
405 | return "PRUNEP"; | |
d62a17ae | 406 | case PIM_IFJOIN_PRUNE_TMP: |
c206937b DS |
407 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
408 | return "SGRpt(P')"; | |
409 | else | |
410 | return "PRUNET"; | |
d62a17ae | 411 | case PIM_IFJOIN_PRUNE_PENDING_TMP: |
c206937b DS |
412 | if (PIM_IF_FLAG_TEST_S_G_RPT(flags)) |
413 | return "SGRpt(PP')"; | |
414 | else | |
415 | return "PRUNEPT"; | |
d62a17ae | 416 | } |
417 | ||
418 | return "ifjoin_bad_state"; | |
12e41d03 DL |
419 | } |
420 | ||
421 | const char *pim_ifchannel_ifassert_name(enum pim_ifassert_state ifassert_state) | |
422 | { | |
d62a17ae | 423 | switch (ifassert_state) { |
424 | case PIM_IFASSERT_NOINFO: | |
425 | return "NOINFO"; | |
426 | case PIM_IFASSERT_I_AM_WINNER: | |
427 | return "WINNER"; | |
428 | case PIM_IFASSERT_I_AM_LOSER: | |
429 | return "LOSER"; | |
430 | } | |
12e41d03 | 431 | |
d62a17ae | 432 | return "ifassert_bad_state"; |
12e41d03 DL |
433 | } |
434 | ||
435 | /* | |
436 | RFC 4601: 4.6.5. Assert State Macros | |
437 | ||
438 | AssertWinner(S,G,I) defaults to NULL and AssertWinnerMetric(S,G,I) | |
439 | defaults to Infinity when in the NoInfo state. | |
440 | */ | |
441 | void reset_ifassert_state(struct pim_ifchannel *ch) | |
442 | { | |
d62a17ae | 443 | struct in_addr any = {.s_addr = INADDR_ANY}; |
7656e7fc | 444 | |
d62a17ae | 445 | THREAD_OFF(ch->t_ifassert_timer); |
12e41d03 | 446 | |
d62a17ae | 447 | pim_ifassert_winner_set(ch, PIM_IFASSERT_NOINFO, any, |
d17612dd | 448 | router->infinite_assert_metric); |
12e41d03 DL |
449 | } |
450 | ||
12e41d03 | 451 | struct pim_ifchannel *pim_ifchannel_find(struct interface *ifp, |
4ed0af70 | 452 | struct prefix_sg *sg) |
12e41d03 | 453 | { |
d62a17ae | 454 | struct pim_interface *pim_ifp; |
455 | struct pim_ifchannel *ch; | |
456 | struct pim_ifchannel lookup; | |
12e41d03 | 457 | |
d62a17ae | 458 | pim_ifp = ifp->info; |
12e41d03 | 459 | |
d62a17ae | 460 | if (!pim_ifp) { |
461 | zlog_warn("%s: (S,G)=%s: multicast not enabled on interface %s", | |
15569c58 | 462 | __func__, pim_str_sg_dump(sg), ifp->name); |
d62a17ae | 463 | return NULL; |
464 | } | |
12e41d03 | 465 | |
d62a17ae | 466 | lookup.sg = *sg; |
ad7b74c4 DS |
467 | lookup.interface = ifp; |
468 | ch = RB_FIND(pim_ifchannel_rb, &pim_ifp->ifchannel_rb, &lookup); | |
12e41d03 | 469 | |
d62a17ae | 470 | return ch; |
12e41d03 DL |
471 | } |
472 | ||
473 | static void ifmembership_set(struct pim_ifchannel *ch, | |
474 | enum pim_ifmembership membership) | |
475 | { | |
9b29ea95 DS |
476 | struct pim_interface *pim_ifp = ch->interface->info; |
477 | ||
d62a17ae | 478 | if (ch->local_ifmembership == membership) |
479 | return; | |
480 | ||
481 | if (PIM_DEBUG_PIM_EVENTS) { | |
482 | zlog_debug("%s: (S,G)=%s membership now is %s on interface %s", | |
15569c58 | 483 | __func__, ch->sg_str, |
d62a17ae | 484 | membership == PIM_IFMEMBERSHIP_INCLUDE ? "INCLUDE" |
485 | : "NOINFO", | |
486 | ch->interface->name); | |
487 | } | |
488 | ||
489 | ch->local_ifmembership = membership; | |
490 | ||
9b29ea95 | 491 | pim_upstream_update_join_desired(pim_ifp->pim, ch->upstream); |
d62a17ae | 492 | pim_ifchannel_update_could_assert(ch); |
493 | pim_ifchannel_update_assert_tracking_desired(ch); | |
12e41d03 DL |
494 | } |
495 | ||
496 | ||
497 | void pim_ifchannel_membership_clear(struct interface *ifp) | |
498 | { | |
d62a17ae | 499 | struct pim_interface *pim_ifp; |
d62a17ae | 500 | struct pim_ifchannel *ch; |
12e41d03 | 501 | |
d62a17ae | 502 | pim_ifp = ifp->info; |
503 | zassert(pim_ifp); | |
12e41d03 | 504 | |
a2addae8 | 505 | RB_FOREACH (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb) |
d62a17ae | 506 | ifmembership_set(ch, PIM_IFMEMBERSHIP_NOINFO); |
12e41d03 DL |
507 | } |
508 | ||
509 | void pim_ifchannel_delete_on_noinfo(struct interface *ifp) | |
510 | { | |
d62a17ae | 511 | struct pim_interface *pim_ifp; |
ad7b74c4 | 512 | struct pim_ifchannel *ch, *ch_tmp; |
12e41d03 | 513 | |
d62a17ae | 514 | pim_ifp = ifp->info; |
515 | zassert(pim_ifp); | |
12e41d03 | 516 | |
a2addae8 | 517 | RB_FOREACH_SAFE (ch, pim_ifchannel_rb, &pim_ifp->ifchannel_rb, ch_tmp) |
d62a17ae | 518 | delete_on_noinfo(ch); |
12e41d03 DL |
519 | } |
520 | ||
1a10fc74 DS |
521 | /* |
522 | * For a given Interface, if we are given a S,G | |
523 | * Find the *,G (If we have it). | |
524 | * If we are passed a *,G, find the *,* ifchannel | |
525 | * if we have it. | |
526 | */ | |
d62a17ae | 527 | static struct pim_ifchannel *pim_ifchannel_find_parent(struct pim_ifchannel *ch) |
1a10fc74 | 528 | { |
d62a17ae | 529 | struct prefix_sg parent_sg = ch->sg; |
530 | struct pim_ifchannel *parent = NULL; | |
531 | ||
532 | // (S,G) | |
533 | if ((parent_sg.src.s_addr != INADDR_ANY) | |
534 | && (parent_sg.grp.s_addr != INADDR_ANY)) { | |
535 | parent_sg.src.s_addr = INADDR_ANY; | |
536 | parent = pim_ifchannel_find(ch->interface, &parent_sg); | |
537 | ||
538 | if (parent) | |
539 | listnode_add(parent->sources, ch); | |
540 | return parent; | |
541 | } | |
542 | ||
543 | return NULL; | |
1a10fc74 DS |
544 | } |
545 | ||
d62a17ae | 546 | struct pim_ifchannel *pim_ifchannel_add(struct interface *ifp, |
0885a9f1 DS |
547 | struct prefix_sg *sg, |
548 | uint8_t source_flags, int up_flags) | |
12e41d03 | 549 | { |
d62a17ae | 550 | struct pim_interface *pim_ifp; |
551 | struct pim_ifchannel *ch; | |
552 | struct pim_upstream *up; | |
553 | ||
554 | ch = pim_ifchannel_find(ifp, sg); | |
555 | if (ch) | |
556 | return ch; | |
557 | ||
558 | pim_ifp = ifp->info; | |
559 | ||
d62a17ae | 560 | ch = XCALLOC(MTYPE_PIM_IFCHANNEL, sizeof(*ch)); |
d62a17ae | 561 | |
562 | ch->flags = 0; | |
0885a9f1 DS |
563 | if ((source_flags & PIM_ENCODE_RPT_BIT) |
564 | && !(source_flags & PIM_ENCODE_WC_BIT)) | |
565 | PIM_IF_FLAG_SET_S_G_RPT(ch->flags); | |
566 | ||
d62a17ae | 567 | ch->interface = ifp; |
568 | ch->sg = *sg; | |
569 | pim_str_sg_set(sg, ch->sg_str); | |
570 | ch->parent = pim_ifchannel_find_parent(ch); | |
571 | if (ch->sg.src.s_addr == INADDR_ANY) { | |
572 | ch->sources = list_new(); | |
573 | ch->sources->cmp = | |
574 | (int (*)(void *, void *))pim_ifchannel_compare; | |
575 | } else | |
576 | ch->sources = NULL; | |
577 | ||
578 | pim_ifchannel_find_new_children(ch); | |
579 | ch->local_ifmembership = PIM_IFMEMBERSHIP_NOINFO; | |
580 | ||
581 | ch->ifjoin_state = PIM_IFJOIN_NOINFO; | |
582 | ch->t_ifjoin_expiry_timer = NULL; | |
583 | ch->t_ifjoin_prune_pending_timer = NULL; | |
584 | ch->ifjoin_creation = 0; | |
585 | ||
ad7b74c4 | 586 | RB_INSERT(pim_ifchannel_rb, &pim_ifp->ifchannel_rb, ch); |
0885a9f1 | 587 | |
15569c58 | 588 | up = pim_upstream_add(pim_ifp->pim, sg, NULL, up_flags, __func__, ch); |
0885a9f1 | 589 | |
9c80de24 | 590 | ch->upstream = up; |
0885a9f1 DS |
591 | |
592 | listnode_add_sort(up->ifchannels, ch); | |
593 | ||
d62a17ae | 594 | ch->ifassert_my_metric = pim_macro_ch_my_assert_metric_eval(ch); |
595 | ch->ifassert_winner_metric = pim_macro_ch_my_assert_metric_eval(ch); | |
596 | ||
975a328e | 597 | ch->ifassert_winner.s_addr = INADDR_ANY; |
d62a17ae | 598 | |
599 | /* Assert state */ | |
600 | ch->t_ifassert_timer = NULL; | |
601 | ch->ifassert_state = PIM_IFASSERT_NOINFO; | |
602 | reset_ifassert_state(ch); | |
603 | if (pim_macro_ch_could_assert_eval(ch)) | |
604 | PIM_IF_FLAG_SET_COULD_ASSERT(ch->flags); | |
605 | else | |
606 | PIM_IF_FLAG_UNSET_COULD_ASSERT(ch->flags); | |
607 | ||
608 | if (pim_macro_assert_tracking_desired_eval(ch)) | |
609 | PIM_IF_FLAG_SET_ASSERT_TRACKING_DESIRED(ch->flags); | |
610 | else | |
611 | PIM_IF_FLAG_UNSET_ASSERT_TRACKING_DESIRED(ch->flags); | |
612 | ||
22c35834 SK |
613 | /* |
614 | * advertise MLAG Data to MLAG peer | |
615 | */ | |
616 | if (PIM_I_am_DualActive(pim_ifp)) { | |
617 | up->dualactive_ifchannel_count++; | |
618 | /* Sync once for upstream */ | |
619 | if (up->dualactive_ifchannel_count == 1) { | |
620 | PIM_UPSTREAM_FLAG_SET_MLAG_INTERFACE(up->flags); | |
621 | pim_mlag_up_local_add(pim_ifp->pim, up); | |
622 | } | |
623 | if (PIM_DEBUG_MLAG) | |
624 | zlog_debug( | |
625 | "%s: New Dual active if-chnanel is added to upstream:%s " | |
626 | "count:%d, flags:0x%x", | |
627 | __func__, up->sg_str, | |
628 | up->dualactive_ifchannel_count, up->flags); | |
629 | } | |
630 | ||
9443810e SP |
631 | if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_PIM) |
632 | PIM_IF_FLAG_SET_PROTO_PIM(ch->flags); | |
633 | ||
634 | if (up_flags == PIM_UPSTREAM_FLAG_MASK_SRC_IGMP) | |
635 | PIM_IF_FLAG_SET_PROTO_IGMP(ch->flags); | |
636 | ||
d62a17ae | 637 | if (PIM_DEBUG_PIM_TRACE) |
b900ad16 AK |
638 | zlog_debug("%s: ifchannel %s(%s) is created ", __func__, |
639 | ch->sg_str, ch->interface->name); | |
d62a17ae | 640 | |
641 | return ch; | |
12e41d03 DL |
642 | } |
643 | ||
95d3f501 | 644 | static void ifjoin_to_noinfo(struct pim_ifchannel *ch, bool ch_del) |
12e41d03 | 645 | { |
aabb9a2f | 646 | pim_forward_stop(ch, !ch_del); |
15569c58 | 647 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_NOINFO); |
d62a17ae | 648 | if (ch_del) |
649 | delete_on_noinfo(ch); | |
12e41d03 DL |
650 | } |
651 | ||
652 | static int on_ifjoin_expiry_timer(struct thread *t) | |
653 | { | |
d62a17ae | 654 | struct pim_ifchannel *ch; |
12e41d03 | 655 | |
d62a17ae | 656 | ch = THREAD_ARG(t); |
12e41d03 | 657 | |
23fc858a | 658 | if (PIM_DEBUG_PIM_TRACE) |
15569c58 | 659 | zlog_debug("%s: ifchannel %s expiry timer", __func__, |
03c2014c DS |
660 | ch->sg_str); |
661 | ||
d62a17ae | 662 | ifjoin_to_noinfo(ch, true); |
663 | /* ch may have been deleted */ | |
12e41d03 | 664 | |
d62a17ae | 665 | return 0; |
12e41d03 DL |
666 | } |
667 | ||
12e41d03 DL |
668 | static int on_ifjoin_prune_pending_timer(struct thread *t) |
669 | { | |
d62a17ae | 670 | struct pim_ifchannel *ch; |
671 | int send_prune_echo; /* boolean */ | |
672 | struct interface *ifp; | |
673 | struct pim_interface *pim_ifp; | |
674 | ||
675 | ch = THREAD_ARG(t); | |
676 | ||
23fc858a | 677 | if (PIM_DEBUG_PIM_TRACE) |
996c9314 LB |
678 | zlog_debug( |
679 | "%s: IFCHANNEL%s %s Prune Pending Timer Popped", | |
15569c58 | 680 | __func__, pim_str_sg_dump(&ch->sg), |
996c9314 | 681 | pim_ifchannel_ifjoin_name(ch->ifjoin_state, ch->flags)); |
b456bceb | 682 | |
d62a17ae | 683 | if (ch->ifjoin_state == PIM_IFJOIN_PRUNE_PENDING) { |
d62a17ae | 684 | ifp = ch->interface; |
685 | pim_ifp = ifp->info; | |
c206937b DS |
686 | if (!PIM_IF_FLAG_TEST_S_G_RPT(ch->flags)) { |
687 | /* Send PruneEcho(S,G) ? */ | |
688 | send_prune_echo = | |
689 | (listcount(pim_ifp->pim_neighbor_list) > 1); | |
690 | ||
691 | if (send_prune_echo) { | |
692 | struct pim_rpf rpf; | |
693 | ||
694 | rpf.source_nexthop.interface = ifp; | |
695 | rpf.rpf_addr.u.prefix4 = | |
696 | pim_ifp->primary_address; | |
996c9314 LB |
697 | pim_jp_agg_single_upstream_send( |
698 | &rpf, ch->upstream, 0); | |
c206937b | 699 | } |
d62a17ae | 700 | |
c206937b DS |
701 | ifjoin_to_noinfo(ch, true); |
702 | } else { | |
703 | /* If SGRpt flag is set on ifchannel, Trigger SGRpt | |
704 | * message on RP path upon prune timer expiry. | |
705 | */ | |
706 | ch->ifjoin_state = PIM_IFJOIN_PRUNE; | |
b456bceb DS |
707 | if (ch->upstream) { |
708 | struct pim_upstream *parent = | |
709 | ch->upstream->parent; | |
710 | ||
9b29ea95 DS |
711 | pim_upstream_update_join_desired(pim_ifp->pim, |
712 | ch->upstream); | |
b456bceb DS |
713 | |
714 | pim_jp_agg_single_upstream_send(&parent->rpf, | |
996c9314 | 715 | parent, true); |
b456bceb | 716 | } |
c206937b | 717 | } |
d62a17ae | 718 | /* from here ch may have been deleted */ |
d62a17ae | 719 | } |
720 | ||
721 | return 0; | |
12e41d03 DL |
722 | } |
723 | ||
d62a17ae | 724 | static void check_recv_upstream(int is_join, struct interface *recv_ifp, |
725 | struct in_addr upstream, struct prefix_sg *sg, | |
726 | uint8_t source_flags, int holdtime) | |
12e41d03 | 727 | { |
d62a17ae | 728 | struct pim_upstream *up; |
9b29ea95 | 729 | struct pim_interface *pim_ifp = recv_ifp->info; |
d62a17ae | 730 | |
731 | /* Upstream (S,G) in Joined state ? */ | |
9b29ea95 | 732 | up = pim_upstream_find(pim_ifp->pim, sg); |
d62a17ae | 733 | if (!up) |
734 | return; | |
735 | if (up->join_state != PIM_UPSTREAM_JOINED) | |
736 | return; | |
737 | ||
738 | /* Upstream (S,G) in Joined state */ | |
739 | ||
740 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) { | |
741 | /* RPF'(S,G) not found */ | |
15569c58 DA |
742 | zlog_warn("%s %s: RPF'%s not found", __FILE__, __func__, |
743 | up->sg_str); | |
d62a17ae | 744 | return; |
745 | } | |
746 | ||
747 | /* upstream directed to RPF'(S,G) ? */ | |
748 | if (upstream.s_addr != up->rpf.rpf_addr.u.prefix4.s_addr) { | |
749 | char up_str[INET_ADDRSTRLEN]; | |
750 | char rpf_str[PREFIX_STRLEN]; | |
751 | pim_inet4_dump("<up?>", upstream, up_str, sizeof(up_str)); | |
752 | pim_addr_dump("<rpf?>", &up->rpf.rpf_addr, rpf_str, | |
753 | sizeof(rpf_str)); | |
754 | zlog_warn( | |
755 | "%s %s: (S,G)=%s upstream=%s not directed to RPF'(S,G)=%s on interface %s", | |
15569c58 DA |
756 | __FILE__, __func__, up->sg_str, up_str, rpf_str, |
757 | recv_ifp->name); | |
d62a17ae | 758 | return; |
759 | } | |
760 | /* upstream directed to RPF'(S,G) */ | |
761 | ||
762 | if (is_join) { | |
763 | /* Join(S,G) to RPF'(S,G) */ | |
764 | pim_upstream_join_suppress(up, up->rpf.rpf_addr.u.prefix4, | |
765 | holdtime); | |
766 | return; | |
767 | } | |
768 | ||
769 | /* Prune to RPF'(S,G) */ | |
770 | ||
771 | if (source_flags & PIM_RPT_BIT_MASK) { | |
772 | if (source_flags & PIM_WILDCARD_BIT_MASK) { | |
773 | /* Prune(*,G) to RPF'(S,G) */ | |
774 | pim_upstream_join_timer_decrease_to_t_override( | |
775 | "Prune(*,G)", up); | |
776 | return; | |
777 | } | |
778 | ||
779 | /* Prune(S,G,rpt) to RPF'(S,G) */ | |
780 | pim_upstream_join_timer_decrease_to_t_override("Prune(S,G,rpt)", | |
781 | up); | |
782 | return; | |
783 | } | |
784 | ||
785 | /* Prune(S,G) to RPF'(S,G) */ | |
786 | pim_upstream_join_timer_decrease_to_t_override("Prune(S,G)", up); | |
12e41d03 DL |
787 | } |
788 | ||
d62a17ae | 789 | static int nonlocal_upstream(int is_join, struct interface *recv_ifp, |
790 | struct in_addr upstream, struct prefix_sg *sg, | |
791 | uint8_t source_flags, uint16_t holdtime) | |
12e41d03 | 792 | { |
d62a17ae | 793 | struct pim_interface *recv_pim_ifp; |
794 | int is_local; /* boolean */ | |
795 | ||
796 | recv_pim_ifp = recv_ifp->info; | |
797 | zassert(recv_pim_ifp); | |
798 | ||
799 | is_local = (upstream.s_addr == recv_pim_ifp->primary_address.s_addr); | |
800 | ||
801 | if (is_local) | |
802 | return 0; | |
803 | ||
804 | if (PIM_DEBUG_PIM_TRACE_DETAIL) { | |
805 | char up_str[INET_ADDRSTRLEN]; | |
806 | pim_inet4_dump("<upstream?>", upstream, up_str, sizeof(up_str)); | |
807 | zlog_warn("%s: recv %s (S,G)=%s to non-local upstream=%s on %s", | |
15569c58 | 808 | __func__, is_join ? "join" : "prune", |
d62a17ae | 809 | pim_str_sg_dump(sg), up_str, recv_ifp->name); |
810 | } | |
811 | ||
812 | /* | |
813 | * Since recv upstream addr was not directed to our primary | |
814 | * address, check if we should react to it in any way. | |
815 | */ | |
816 | check_recv_upstream(is_join, recv_ifp, upstream, sg, source_flags, | |
817 | holdtime); | |
818 | ||
819 | return 1; /* non-local */ | |
12e41d03 DL |
820 | } |
821 | ||
94e3f3e5 AK |
822 | static void pim_ifchannel_ifjoin_handler(struct pim_ifchannel *ch, |
823 | struct pim_interface *pim_ifp) | |
824 | { | |
15569c58 | 825 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_JOIN); |
94e3f3e5 AK |
826 | PIM_IF_FLAG_UNSET_S_G_RPT(ch->flags); |
827 | /* check if the interface qualifies as an immediate | |
828 | * OIF | |
829 | */ | |
830 | if (pim_upstream_evaluate_join_desired_interface( | |
831 | ch->upstream, ch, | |
832 | NULL /*starch*/)) { | |
833 | pim_channel_add_oif(ch->upstream->channel_oil, | |
834 | ch->interface, | |
835 | PIM_OIF_FLAG_PROTO_PIM, | |
836 | __func__); | |
837 | pim_upstream_update_join_desired(pim_ifp->pim, | |
838 | ch->upstream); | |
839 | } | |
840 | } | |
841 | ||
842 | ||
d62a17ae | 843 | void pim_ifchannel_join_add(struct interface *ifp, struct in_addr neigh_addr, |
844 | struct in_addr upstream, struct prefix_sg *sg, | |
845 | uint8_t source_flags, uint16_t holdtime) | |
12e41d03 | 846 | { |
d62a17ae | 847 | struct pim_interface *pim_ifp; |
848 | struct pim_ifchannel *ch; | |
849 | ||
850 | if (nonlocal_upstream(1 /* join */, ifp, upstream, sg, source_flags, | |
851 | holdtime)) { | |
852 | return; | |
853 | } | |
854 | ||
0885a9f1 DS |
855 | ch = pim_ifchannel_add(ifp, sg, source_flags, |
856 | PIM_UPSTREAM_FLAG_MASK_SRC_PIM); | |
d62a17ae | 857 | |
12e41d03 | 858 | /* |
d62a17ae | 859 | RFC 4601: 4.6.1. (S,G) Assert Message State Machine |
860 | ||
861 | Transitions from "I am Assert Loser" State | |
12e41d03 | 862 | |
d62a17ae | 863 | Receive Join(S,G) on Interface I |
12e41d03 | 864 | |
d62a17ae | 865 | We receive a Join(S,G) that has the Upstream Neighbor Address |
866 | field set to my primary IP address on interface I. The action is | |
867 | to transition to NoInfo state, delete this (S,G) assert state | |
868 | (Actions A5 below), and allow the normal PIM Join/Prune mechanisms | |
869 | to operate. | |
12e41d03 | 870 | |
d62a17ae | 871 | Notice: The nonlocal_upstream() test above ensures the upstream |
872 | address of the join message is our primary address. | |
12e41d03 | 873 | */ |
d62a17ae | 874 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { |
875 | char neigh_str[INET_ADDRSTRLEN]; | |
876 | pim_inet4_dump("<neigh?>", neigh_addr, neigh_str, | |
877 | sizeof(neigh_str)); | |
878 | zlog_warn("%s: Assert Loser recv Join%s from %s on %s", | |
15569c58 | 879 | __func__, ch->sg_str, neigh_str, ifp->name); |
d62a17ae | 880 | |
881 | assert_action_a5(ch); | |
882 | } | |
883 | ||
884 | pim_ifp = ifp->info; | |
885 | zassert(pim_ifp); | |
886 | ||
887 | switch (ch->ifjoin_state) { | |
888 | case PIM_IFJOIN_NOINFO: | |
15569c58 | 889 | pim_ifchannel_ifjoin_switch(__func__, ch, PIM_IFJOIN_JOIN); |
d62a17ae | 890 | if (pim_macro_chisin_oiflist(ch)) { |
9b29ea95 DS |
891 | pim_upstream_inherited_olist(pim_ifp->pim, |
892 | ch->upstream); | |
d62a17ae | 893 | pim_forward_start(ch); |
894 | } | |
895 | /* | |
896 | * If we are going to be a LHR, we need to note it | |
897 | */ | |
448139e7 AK |
898 | if (ch->upstream->parent && |
899 | (PIM_UPSTREAM_FLAG_TEST_CAN_BE_LHR( | |
900 | ch->upstream->parent->flags)) | |
d62a17ae | 901 | && !(ch->upstream->flags |
902 | & PIM_UPSTREAM_FLAG_MASK_SRC_LHR)) { | |
903 | pim_upstream_ref(ch->upstream, | |
904 | PIM_UPSTREAM_FLAG_MASK_SRC_LHR, | |
15569c58 | 905 | __func__); |
d62a17ae | 906 | pim_upstream_keep_alive_timer_start( |
19b807ca | 907 | ch->upstream, pim_ifp->pim->keep_alive_time); |
d62a17ae | 908 | } |
909 | break; | |
910 | case PIM_IFJOIN_JOIN: | |
911 | zassert(!ch->t_ifjoin_prune_pending_timer); | |
912 | ||
913 | /* | |
914 | In the JOIN state ch->t_ifjoin_expiry_timer may be NULL due to | |
915 | a | |
916 | previously received join message with holdtime=0xFFFF. | |
917 | */ | |
918 | if (ch->t_ifjoin_expiry_timer) { | |
919 | unsigned long remain = thread_timer_remain_second( | |
920 | ch->t_ifjoin_expiry_timer); | |
921 | if (remain > holdtime) { | |
922 | /* | |
923 | RFC 4601: 4.5.3. Receiving (S,G) Join/Prune | |
924 | Messages | |
925 | ||
926 | Transitions from Join State | |
927 | ||
928 | The (S,G) downstream state machine on | |
929 | interface I remains in | |
930 | Join state, and the Expiry Timer (ET) is | |
931 | restarted, set to | |
932 | maximum of its current value and the HoldTime | |
933 | from the | |
934 | triggering Join/Prune message. | |
935 | ||
936 | Conclusion: Do not change the ET if the | |
937 | current value is | |
938 | higher than the received join holdtime. | |
939 | */ | |
940 | return; | |
941 | } | |
942 | } | |
943 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
944 | break; | |
945 | case PIM_IFJOIN_PRUNE: | |
265aabf8 | 946 | if (source_flags & PIM_ENCODE_RPT_BIT) { |
15569c58 | 947 | pim_ifchannel_ifjoin_switch(__func__, ch, |
d62a17ae | 948 | PIM_IFJOIN_NOINFO); |
265aabf8 | 949 | THREAD_OFF(ch->t_ifjoin_expiry_timer); |
950 | delete_on_noinfo(ch); | |
951 | return; | |
952 | } else | |
94e3f3e5 | 953 | pim_ifchannel_ifjoin_handler(ch, pim_ifp); |
d62a17ae | 954 | break; |
955 | case PIM_IFJOIN_PRUNE_PENDING: | |
956 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
957 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
958 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
15569c58 | 959 | pim_ifchannel_ifjoin_switch(__func__, ch, |
d62a17ae | 960 | PIM_IFJOIN_NOINFO); |
94e3f3e5 AK |
961 | } else { |
962 | pim_ifchannel_ifjoin_handler(ch, pim_ifp); | |
963 | } | |
d62a17ae | 964 | break; |
965 | case PIM_IFJOIN_PRUNE_TMP: | |
966 | break; | |
967 | case PIM_IFJOIN_PRUNE_PENDING_TMP: | |
968 | break; | |
969 | } | |
970 | ||
971 | if (holdtime != 0xFFFF) { | |
36417fcc DS |
972 | thread_add_timer(router->master, on_ifjoin_expiry_timer, ch, |
973 | holdtime, &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 974 | } |
12e41d03 DL |
975 | } |
976 | ||
d62a17ae | 977 | void pim_ifchannel_prune(struct interface *ifp, struct in_addr upstream, |
978 | struct prefix_sg *sg, uint8_t source_flags, | |
12e41d03 DL |
979 | uint16_t holdtime) |
980 | { | |
d62a17ae | 981 | struct pim_ifchannel *ch; |
982 | struct pim_interface *pim_ifp; | |
983 | int jp_override_interval_msec; | |
1405c852 | 984 | |
d62a17ae | 985 | if (nonlocal_upstream(0 /* prune */, ifp, upstream, sg, source_flags, |
986 | holdtime)) { | |
987 | return; | |
988 | } | |
989 | ||
990 | ch = pim_ifchannel_find(ifp, sg); | |
991 | if (!ch && !(source_flags & PIM_ENCODE_RPT_BIT)) { | |
23fc858a | 992 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 993 | zlog_debug( |
41714081 | 994 | "%s: Received prune with no relevant ifchannel %s%s state: %d", |
15569c58 DA |
995 | __func__, ifp->name, pim_str_sg_dump(sg), |
996 | source_flags); | |
d62a17ae | 997 | return; |
998 | } | |
999 | ||
0885a9f1 DS |
1000 | ch = pim_ifchannel_add(ifp, sg, source_flags, |
1001 | PIM_UPSTREAM_FLAG_MASK_SRC_PIM); | |
d62a17ae | 1002 | |
1003 | pim_ifp = ifp->info; | |
1004 | ||
1005 | switch (ch->ifjoin_state) { | |
1006 | case PIM_IFJOIN_NOINFO: | |
1007 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1008 | if (!(source_flags & PIM_ENCODE_WC_BIT)) | |
1009 | PIM_IF_FLAG_SET_S_G_RPT(ch->flags); | |
1010 | ||
1011 | ch->ifjoin_state = PIM_IFJOIN_PRUNE_PENDING; | |
1012 | if (listcount(pim_ifp->pim_neighbor_list) > 1) | |
1013 | jp_override_interval_msec = | |
1014 | pim_if_jp_override_interval_msec(ifp); | |
1015 | else | |
1016 | jp_override_interval_msec = | |
1017 | 0; /* schedule to expire immediately */ | |
1018 | /* If we called ifjoin_prune() directly instead, care | |
1019 | should | |
1020 | be taken not to use "ch" afterwards since it would be | |
1021 | deleted. */ | |
1022 | ||
1023 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
1024 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
1025 | thread_add_timer_msec( | |
36417fcc DS |
1026 | router->master, on_ifjoin_prune_pending_timer, |
1027 | ch, jp_override_interval_msec, | |
d62a17ae | 1028 | &ch->t_ifjoin_prune_pending_timer); |
36417fcc DS |
1029 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1030 | ch, holdtime, | |
1031 | &ch->t_ifjoin_expiry_timer); | |
9b29ea95 DS |
1032 | pim_upstream_update_join_desired(pim_ifp->pim, |
1033 | ch->upstream); | |
d62a17ae | 1034 | } |
1035 | break; | |
1036 | case PIM_IFJOIN_PRUNE_PENDING: | |
1037 | /* nothing to do */ | |
1038 | break; | |
1039 | case PIM_IFJOIN_JOIN: | |
1040 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
1041 | ||
15569c58 | 1042 | pim_ifchannel_ifjoin_switch(__func__, ch, |
d62a17ae | 1043 | PIM_IFJOIN_PRUNE_PENDING); |
1044 | ||
1045 | if (listcount(pim_ifp->pim_neighbor_list) > 1) | |
1046 | jp_override_interval_msec = | |
1047 | pim_if_jp_override_interval_msec(ifp); | |
1048 | else | |
1049 | jp_override_interval_msec = | |
1050 | 0; /* schedule to expire immediately */ | |
1051 | /* If we called ifjoin_prune() directly instead, care should | |
1052 | be taken not to use "ch" afterwards since it would be | |
1053 | deleted. */ | |
1054 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
36417fcc DS |
1055 | thread_add_timer_msec(router->master, |
1056 | on_ifjoin_prune_pending_timer, ch, | |
d62a17ae | 1057 | jp_override_interval_msec, |
1058 | &ch->t_ifjoin_prune_pending_timer); | |
1059 | break; | |
1060 | case PIM_IFJOIN_PRUNE: | |
1061 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1062 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
36417fcc DS |
1063 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1064 | ch, holdtime, | |
1065 | &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 1066 | } |
1067 | break; | |
1068 | case PIM_IFJOIN_PRUNE_TMP: | |
1069 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1070 | ch->ifjoin_state = PIM_IFJOIN_PRUNE; | |
1071 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
36417fcc DS |
1072 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1073 | ch, holdtime, | |
1074 | &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 1075 | } |
1076 | break; | |
1077 | case PIM_IFJOIN_PRUNE_PENDING_TMP: | |
1078 | if (source_flags & PIM_ENCODE_RPT_BIT) { | |
1079 | ch->ifjoin_state = PIM_IFJOIN_PRUNE_PENDING; | |
1080 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
36417fcc DS |
1081 | thread_add_timer(router->master, on_ifjoin_expiry_timer, |
1082 | ch, holdtime, | |
1083 | &ch->t_ifjoin_expiry_timer); | |
d62a17ae | 1084 | } |
1085 | break; | |
1086 | } | |
12e41d03 DL |
1087 | } |
1088 | ||
d62a17ae | 1089 | int pim_ifchannel_local_membership_add(struct interface *ifp, |
448139e7 | 1090 | struct prefix_sg *sg, bool is_vxlan) |
12e41d03 | 1091 | { |
d62a17ae | 1092 | struct pim_ifchannel *ch, *starch; |
1093 | struct pim_interface *pim_ifp; | |
43e40fdf | 1094 | struct pim_instance *pim; |
448139e7 | 1095 | int up_flags; |
d62a17ae | 1096 | |
1097 | /* PIM enabled on interface? */ | |
1098 | pim_ifp = ifp->info; | |
78b0c6bf DS |
1099 | if (!pim_ifp) { |
1100 | if (PIM_DEBUG_EVENTS) | |
1101 | zlog_debug("%s:%s Expected pim interface setup for %s", | |
5e81f5dd | 1102 | __func__, pim_str_sg_dump(sg), ifp->name); |
d62a17ae | 1103 | return 0; |
78b0c6bf DS |
1104 | } |
1105 | ||
1106 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) { | |
1107 | if (PIM_DEBUG_EVENTS) | |
5e81f5dd DS |
1108 | zlog_debug( |
1109 | "%s:%s PIM is not configured on this interface %s", | |
1110 | __func__, pim_str_sg_dump(sg), ifp->name); | |
d62a17ae | 1111 | return 0; |
78b0c6bf | 1112 | } |
d62a17ae | 1113 | |
43e40fdf DS |
1114 | pim = pim_ifp->pim; |
1115 | ||
d62a17ae | 1116 | /* skip (*,G) ch creation if G is of type SSM */ |
1117 | if (sg->src.s_addr == INADDR_ANY) { | |
6f439a70 | 1118 | if (pim_is_grp_ssm(pim, sg->grp)) { |
d62a17ae | 1119 | if (PIM_DEBUG_PIM_EVENTS) |
1120 | zlog_debug( | |
1121 | "%s: local membership (S,G)=%s ignored as group is SSM", | |
5e81f5dd | 1122 | __func__, pim_str_sg_dump(sg)); |
d62a17ae | 1123 | return 1; |
1124 | } | |
1125 | } | |
1126 | ||
17823cdd DS |
1127 | /* vxlan term mroutes use ipmr-lo as local member to |
1128 | * pull down multicast vxlan tunnel traffic | |
1129 | */ | |
448139e7 AK |
1130 | up_flags = is_vxlan ? PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM : |
1131 | PIM_UPSTREAM_FLAG_MASK_SRC_IGMP; | |
1132 | ch = pim_ifchannel_add(ifp, sg, 0, up_flags); | |
d62a17ae | 1133 | |
1134 | ifmembership_set(ch, PIM_IFMEMBERSHIP_INCLUDE); | |
1135 | ||
1136 | if (sg->src.s_addr == INADDR_ANY) { | |
9b29ea95 | 1137 | struct pim_upstream *up = pim_upstream_find(pim, sg); |
d62a17ae | 1138 | struct pim_upstream *child; |
1139 | struct listnode *up_node; | |
1140 | ||
1141 | starch = ch; | |
1142 | ||
1143 | for (ALL_LIST_ELEMENTS_RO(up->sources, up_node, child)) { | |
1144 | if (PIM_DEBUG_EVENTS) | |
1145 | zlog_debug("%s %s: IGMP (S,G)=%s(%s) from %s", | |
5e81f5dd DS |
1146 | __FILE__, __func__, child->sg_str, |
1147 | ifp->name, up->sg_str); | |
d62a17ae | 1148 | |
1149 | ch = pim_ifchannel_find(ifp, &child->sg); | |
1150 | if (pim_upstream_evaluate_join_desired_interface( | |
1151 | child, ch, starch)) { | |
1152 | pim_channel_add_oif(child->channel_oil, ifp, | |
1b249e70 AK |
1153 | PIM_OIF_FLAG_PROTO_STAR, |
1154 | __func__); | |
a53a9b3e | 1155 | pim_upstream_update_join_desired(pim, child); |
d62a17ae | 1156 | } |
1157 | } | |
1158 | ||
43e40fdf | 1159 | if (pim->spt.switchover == PIM_SPT_INFINITY) { |
f88df3a6 | 1160 | if (pim->spt.plist) { |
d62a17ae | 1161 | struct prefix_list *plist = prefix_list_lookup( |
43e40fdf | 1162 | AFI_IP, pim->spt.plist); |
d62a17ae | 1163 | struct prefix g; |
1164 | g.family = AF_INET; | |
1165 | g.prefixlen = IPV4_MAX_PREFIXLEN; | |
1166 | g.u.prefix4 = up->sg.grp; | |
1167 | ||
1168 | if (prefix_list_apply(plist, &g) | |
1169 | == PREFIX_DENY) { | |
1170 | pim_channel_add_oif( | |
43e40fdf | 1171 | up->channel_oil, pim->regiface, |
1b249e70 AK |
1172 | PIM_OIF_FLAG_PROTO_IGMP, |
1173 | __func__); | |
d62a17ae | 1174 | } |
1175 | } | |
1176 | } else | |
43e40fdf | 1177 | pim_channel_add_oif(up->channel_oil, pim->regiface, |
1b249e70 AK |
1178 | PIM_OIF_FLAG_PROTO_IGMP, |
1179 | __func__); | |
d62a17ae | 1180 | } |
1181 | ||
1182 | return 1; | |
12e41d03 DL |
1183 | } |
1184 | ||
1185 | void pim_ifchannel_local_membership_del(struct interface *ifp, | |
4ed0af70 | 1186 | struct prefix_sg *sg) |
12e41d03 | 1187 | { |
d62a17ae | 1188 | struct pim_ifchannel *starch, *ch, *orig; |
1189 | struct pim_interface *pim_ifp; | |
1190 | ||
1191 | /* PIM enabled on interface? */ | |
1192 | pim_ifp = ifp->info; | |
1193 | if (!pim_ifp) | |
1194 | return; | |
1195 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) | |
1196 | return; | |
1197 | ||
1198 | orig = ch = pim_ifchannel_find(ifp, sg); | |
1199 | if (!ch) | |
1200 | return; | |
d62a17ae | 1201 | ifmembership_set(ch, PIM_IFMEMBERSHIP_NOINFO); |
1202 | ||
1203 | if (sg->src.s_addr == INADDR_ANY) { | |
9b29ea95 | 1204 | struct pim_upstream *up = pim_upstream_find(pim_ifp->pim, sg); |
d62a17ae | 1205 | struct pim_upstream *child; |
1206 | struct listnode *up_node, *up_nnode; | |
1207 | ||
1208 | starch = ch; | |
1209 | ||
1210 | for (ALL_LIST_ELEMENTS(up->sources, up_node, up_nnode, child)) { | |
1211 | struct channel_oil *c_oil = child->channel_oil; | |
1212 | struct pim_ifchannel *chchannel = | |
1213 | pim_ifchannel_find(ifp, &child->sg); | |
dc7204b7 A |
1214 | |
1215 | pim_ifp = ifp->info; | |
d62a17ae | 1216 | |
1217 | if (PIM_DEBUG_EVENTS) | |
1218 | zlog_debug("%s %s: Prune(S,G)=%s(%s) from %s", | |
5e81f5dd DS |
1219 | __FILE__, __func__, up->sg_str, |
1220 | ifp->name, child->sg_str); | |
d62a17ae | 1221 | |
1222 | ch = pim_ifchannel_find(ifp, &child->sg); | |
d62a17ae | 1223 | /* |
1224 | * If the S,G has no if channel and the c_oil still | |
1225 | * has output here then the *,G was supplying the | |
1226 | * implied | |
1227 | * if channel. So remove it. | |
1228 | */ | |
1537a668 AK |
1229 | if (!pim_upstream_evaluate_join_desired_interface( |
1230 | child, ch, starch) || | |
1231 | (!chchannel && | |
1232 | c_oil->oil.mfcc_ttls[pim_ifp->mroute_vif_index])) { | |
1233 | pim_channel_del_inherited_oif(c_oil, ifp, | |
1234 | __func__); | |
1235 | } | |
d62a17ae | 1236 | |
1237 | /* Child node removal/ref count-- will happen as part of | |
1238 | * parent' delete_no_info */ | |
1239 | } | |
1240 | } | |
1241 | delete_on_noinfo(orig); | |
12e41d03 DL |
1242 | } |
1243 | ||
1244 | void pim_ifchannel_update_could_assert(struct pim_ifchannel *ch) | |
1245 | { | |
d62a17ae | 1246 | int old_couldassert = |
1247 | PIM_FORCE_BOOLEAN(PIM_IF_FLAG_TEST_COULD_ASSERT(ch->flags)); | |
1248 | int new_couldassert = | |
1249 | PIM_FORCE_BOOLEAN(pim_macro_ch_could_assert_eval(ch)); | |
1250 | ||
1251 | if (new_couldassert == old_couldassert) | |
1252 | return; | |
1253 | ||
1254 | if (PIM_DEBUG_PIM_EVENTS) { | |
1255 | char src_str[INET_ADDRSTRLEN]; | |
1256 | char grp_str[INET_ADDRSTRLEN]; | |
1257 | pim_inet4_dump("<src?>", ch->sg.src, src_str, sizeof(src_str)); | |
1258 | pim_inet4_dump("<grp?>", ch->sg.grp, grp_str, sizeof(grp_str)); | |
1259 | zlog_debug("%s: CouldAssert(%s,%s,%s) changed from %d to %d", | |
15569c58 DA |
1260 | __func__, src_str, grp_str, ch->interface->name, |
1261 | old_couldassert, new_couldassert); | |
d62a17ae | 1262 | } |
1263 | ||
1264 | if (new_couldassert) { | |
2951a7a4 | 1265 | /* CouldAssert(S,G,I) switched from false to true */ |
d62a17ae | 1266 | PIM_IF_FLAG_SET_COULD_ASSERT(ch->flags); |
1267 | } else { | |
2951a7a4 | 1268 | /* CouldAssert(S,G,I) switched from true to false */ |
d62a17ae | 1269 | PIM_IF_FLAG_UNSET_COULD_ASSERT(ch->flags); |
1270 | ||
1271 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_WINNER) { | |
1272 | assert_action_a4(ch); | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | pim_ifchannel_update_my_assert_metric(ch); | |
12e41d03 DL |
1277 | } |
1278 | ||
1279 | /* | |
1280 | my_assert_metric may be affected by: | |
1281 | ||
1282 | CouldAssert(S,G) | |
1283 | pim_ifp->primary_address | |
1284 | rpf->source_nexthop.mrib_metric_preference; | |
1285 | rpf->source_nexthop.mrib_route_metric; | |
1286 | */ | |
1287 | void pim_ifchannel_update_my_assert_metric(struct pim_ifchannel *ch) | |
1288 | { | |
d62a17ae | 1289 | struct pim_assert_metric my_metric_new = |
1290 | pim_macro_ch_my_assert_metric_eval(ch); | |
1291 | ||
1292 | if (pim_assert_metric_match(&my_metric_new, &ch->ifassert_my_metric)) | |
1293 | return; | |
1294 | ||
1295 | if (PIM_DEBUG_PIM_EVENTS) { | |
1296 | char src_str[INET_ADDRSTRLEN]; | |
1297 | char grp_str[INET_ADDRSTRLEN]; | |
1298 | char old_addr_str[INET_ADDRSTRLEN]; | |
1299 | char new_addr_str[INET_ADDRSTRLEN]; | |
1300 | pim_inet4_dump("<src?>", ch->sg.src, src_str, sizeof(src_str)); | |
1301 | pim_inet4_dump("<grp?>", ch->sg.grp, grp_str, sizeof(grp_str)); | |
1302 | pim_inet4_dump("<old_addr?>", ch->ifassert_my_metric.ip_address, | |
1303 | old_addr_str, sizeof(old_addr_str)); | |
1304 | pim_inet4_dump("<new_addr?>", my_metric_new.ip_address, | |
1305 | new_addr_str, sizeof(new_addr_str)); | |
1306 | zlog_debug( | |
1307 | "%s: my_assert_metric(%s,%s,%s) changed from %u,%u,%u,%s to %u,%u,%u,%s", | |
15569c58 | 1308 | __func__, src_str, grp_str, ch->interface->name, |
d62a17ae | 1309 | ch->ifassert_my_metric.rpt_bit_flag, |
1310 | ch->ifassert_my_metric.metric_preference, | |
1311 | ch->ifassert_my_metric.route_metric, old_addr_str, | |
1312 | my_metric_new.rpt_bit_flag, | |
1313 | my_metric_new.metric_preference, | |
1314 | my_metric_new.route_metric, new_addr_str); | |
1315 | } | |
1316 | ||
1317 | ch->ifassert_my_metric = my_metric_new; | |
1318 | ||
1319 | if (pim_assert_metric_better(&ch->ifassert_my_metric, | |
1320 | &ch->ifassert_winner_metric)) { | |
1321 | assert_action_a5(ch); | |
1322 | } | |
12e41d03 DL |
1323 | } |
1324 | ||
1325 | void pim_ifchannel_update_assert_tracking_desired(struct pim_ifchannel *ch) | |
1326 | { | |
d62a17ae | 1327 | int old_atd = PIM_FORCE_BOOLEAN( |
1328 | PIM_IF_FLAG_TEST_ASSERT_TRACKING_DESIRED(ch->flags)); | |
1329 | int new_atd = | |
1330 | PIM_FORCE_BOOLEAN(pim_macro_assert_tracking_desired_eval(ch)); | |
1331 | ||
1332 | if (new_atd == old_atd) | |
1333 | return; | |
1334 | ||
1335 | if (PIM_DEBUG_PIM_EVENTS) { | |
1336 | char src_str[INET_ADDRSTRLEN]; | |
1337 | char grp_str[INET_ADDRSTRLEN]; | |
1338 | pim_inet4_dump("<src?>", ch->sg.src, src_str, sizeof(src_str)); | |
1339 | pim_inet4_dump("<grp?>", ch->sg.grp, grp_str, sizeof(grp_str)); | |
1340 | zlog_debug( | |
1341 | "%s: AssertTrackingDesired(%s,%s,%s) changed from %d to %d", | |
15569c58 DA |
1342 | __func__, src_str, grp_str, ch->interface->name, |
1343 | old_atd, new_atd); | |
d62a17ae | 1344 | } |
1345 | ||
1346 | if (new_atd) { | |
2951a7a4 | 1347 | /* AssertTrackingDesired(S,G,I) switched from false to true */ |
d62a17ae | 1348 | PIM_IF_FLAG_SET_ASSERT_TRACKING_DESIRED(ch->flags); |
1349 | } else { | |
2951a7a4 | 1350 | /* AssertTrackingDesired(S,G,I) switched from true to false */ |
d62a17ae | 1351 | PIM_IF_FLAG_UNSET_ASSERT_TRACKING_DESIRED(ch->flags); |
1352 | ||
1353 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { | |
1354 | assert_action_a5(ch); | |
1355 | } | |
1356 | } | |
12e41d03 | 1357 | } |
c8507a16 DS |
1358 | |
1359 | /* | |
1360 | * If we have a new pim interface, check to | |
1361 | * see if any of the pre-existing channels have | |
1362 | * their upstream out that way and turn on forwarding | |
1363 | * for that ifchannel then. | |
1364 | */ | |
d62a17ae | 1365 | void pim_ifchannel_scan_forward_start(struct interface *new_ifp) |
c8507a16 | 1366 | { |
d62a17ae | 1367 | struct pim_interface *new_pim_ifp = new_ifp->info; |
f88df3a6 | 1368 | struct pim_instance *pim = new_pim_ifp->pim; |
ad7b74c4 | 1369 | struct interface *ifp; |
d62a17ae | 1370 | |
451fda4f | 1371 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 1372 | struct pim_interface *loop_pim_ifp = ifp->info; |
d62a17ae | 1373 | struct pim_ifchannel *ch; |
1374 | ||
1375 | if (!loop_pim_ifp) | |
1376 | continue; | |
1377 | ||
1378 | if (new_pim_ifp == loop_pim_ifp) | |
1379 | continue; | |
1380 | ||
a2addae8 | 1381 | RB_FOREACH (ch, pim_ifchannel_rb, &loop_pim_ifp->ifchannel_rb) { |
d62a17ae | 1382 | if (ch->ifjoin_state == PIM_IFJOIN_JOIN) { |
1383 | struct pim_upstream *up = ch->upstream; | |
1384 | if ((!up->channel_oil) | |
1385 | && (up->rpf.source_nexthop | |
1386 | .interface == new_ifp)) | |
1387 | pim_forward_start(ch); | |
1388 | } | |
1389 | } | |
1390 | } | |
c8507a16 | 1391 | } |
220d8a49 DS |
1392 | |
1393 | /* | |
1394 | * Downstream per-interface (S,G,rpt) state machine | |
1395 | * states that we need to move (S,G,rpt) items | |
1396 | * into different states at the start of the | |
1397 | * reception of a *,G join as well, when | |
1398 | * we get End of Message | |
1399 | */ | |
d62a17ae | 1400 | void pim_ifchannel_set_star_g_join_state(struct pim_ifchannel *ch, int eom, |
c206937b | 1401 | uint8_t join) |
220d8a49 | 1402 | { |
ca6cb21b | 1403 | bool send_upstream_starg = false; |
d62a17ae | 1404 | struct pim_ifchannel *child; |
37736d08 | 1405 | struct listnode *ch_node, *nch_node; |
c206937b DS |
1406 | struct pim_instance *pim = |
1407 | ((struct pim_interface *)ch->interface->info)->pim; | |
ca6cb21b | 1408 | struct pim_upstream *starup = ch->upstream; |
d62a17ae | 1409 | |
1410 | if (PIM_DEBUG_PIM_TRACE) | |
1411 | zlog_debug( | |
5e81f5dd | 1412 | "%s: %s %s eom: %d join %u", __func__, |
d62a17ae | 1413 | pim_ifchannel_ifjoin_name(ch->ifjoin_state, ch->flags), |
1414 | ch->sg_str, eom, join); | |
1415 | if (!ch->sources) | |
1416 | return; | |
1417 | ||
37736d08 | 1418 | for (ALL_LIST_ELEMENTS(ch->sources, ch_node, nch_node, child)) { |
d62a17ae | 1419 | if (!PIM_IF_FLAG_TEST_S_G_RPT(child->flags)) |
1420 | continue; | |
1421 | ||
1422 | switch (child->ifjoin_state) { | |
1423 | case PIM_IFJOIN_NOINFO: | |
1424 | case PIM_IFJOIN_JOIN: | |
1425 | break; | |
1426 | case PIM_IFJOIN_PRUNE: | |
1427 | if (!eom) | |
1428 | child->ifjoin_state = PIM_IFJOIN_PRUNE_TMP; | |
1429 | break; | |
1430 | case PIM_IFJOIN_PRUNE_PENDING: | |
1431 | if (!eom) | |
1432 | child->ifjoin_state = | |
1433 | PIM_IFJOIN_PRUNE_PENDING_TMP; | |
1434 | break; | |
1435 | case PIM_IFJOIN_PRUNE_TMP: | |
1436 | case PIM_IFJOIN_PRUNE_PENDING_TMP: | |
37736d08 DS |
1437 | if (!eom) |
1438 | break; | |
1439 | ||
1440 | if (child->ifjoin_state == PIM_IFJOIN_PRUNE_PENDING_TMP) | |
1441 | THREAD_OFF(child->t_ifjoin_prune_pending_timer); | |
1442 | THREAD_OFF(child->t_ifjoin_expiry_timer); | |
37736d08 DS |
1443 | |
1444 | PIM_IF_FLAG_UNSET_S_G_RPT(child->flags); | |
1445 | child->ifjoin_state = PIM_IFJOIN_NOINFO; | |
1446 | ||
0cdbb2cf SP |
1447 | if ((I_am_RP(pim, child->sg.grp)) && |
1448 | (!pim_upstream_empty_inherited_olist( | |
1449 | child->upstream))) { | |
37736d08 DS |
1450 | pim_channel_add_oif( |
1451 | child->upstream->channel_oil, | |
1b249e70 AK |
1452 | ch->interface, PIM_OIF_FLAG_PROTO_STAR, |
1453 | __func__); | |
a53a9b3e AK |
1454 | pim_upstream_update_join_desired(pim, |
1455 | child->upstream); | |
c206937b | 1456 | } |
ca6cb21b | 1457 | send_upstream_starg = true; |
37736d08 DS |
1458 | |
1459 | delete_on_noinfo(child); | |
d62a17ae | 1460 | break; |
1461 | } | |
1405c852 | 1462 | } |
ca6cb21b DS |
1463 | |
1464 | if (send_upstream_starg) | |
1465 | pim_jp_agg_single_upstream_send(&starup->rpf, starup, true); | |
220d8a49 | 1466 | } |
a625e937 | 1467 | |
d8b87afe | 1468 | unsigned int pim_ifchannel_hash_key(const void *arg) |
a625e937 | 1469 | { |
d8b87afe | 1470 | const struct pim_ifchannel *ch = arg; |
a625e937 | 1471 | |
d62a17ae | 1472 | return jhash_2words(ch->sg.src.s_addr, ch->sg.grp.s_addr, 0); |
a625e937 | 1473 | } |