]>
Commit | Line | Data |
---|---|---|
12e41d03 DL |
1 | /* |
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 | |
16 | along with this program; see the file COPYING; if not, write to the | |
17 | Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
18 | MA 02110-1301 USA | |
19 | ||
12e41d03 DL |
20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "linklist.h" | |
25 | #include "thread.h" | |
26 | #include "memory.h" | |
744d91b3 | 27 | #include "if.h" |
c8507a16 | 28 | #include "vrf.h" |
12e41d03 DL |
29 | |
30 | #include "pimd.h" | |
31 | #include "pim_str.h" | |
32 | #include "pim_iface.h" | |
33 | #include "pim_ifchannel.h" | |
34 | #include "pim_zebra.h" | |
35 | #include "pim_time.h" | |
36 | #include "pim_msg.h" | |
37 | #include "pim_pim.h" | |
38 | #include "pim_join.h" | |
39 | #include "pim_rpf.h" | |
40 | #include "pim_macro.h" | |
dfbbce1d | 41 | #include "pim_oil.h" |
4a40c37a | 42 | #include "pim_upstream.h" |
12e41d03 | 43 | |
1a10fc74 DS |
44 | /* |
45 | * A (*,G) or a (*,*) is going away | |
46 | * remove the parent pointer from | |
47 | * those pointing at us | |
48 | */ | |
49 | static void | |
50 | pim_ifchannel_remove_children (struct pim_ifchannel *ch) | |
51 | { | |
52 | struct pim_interface *pim_ifp = ch->interface->info; | |
53 | struct listnode *ch_node; | |
54 | struct pim_ifchannel *child; | |
55 | ||
56 | // Basic sanity, (*,*) not currently supported | |
4ed0af70 DS |
57 | if ((ch->sg.src.s_addr == INADDR_ANY) && |
58 | (ch->sg.grp.s_addr == INADDR_ANY)) | |
1a10fc74 DS |
59 | return; |
60 | ||
61 | // Basic sanity (S,G) have no children | |
4ed0af70 DS |
62 | if ((ch->sg.src.s_addr != INADDR_ANY) && |
63 | (ch->sg.grp.s_addr != INADDR_ANY)) | |
1a10fc74 DS |
64 | return; |
65 | ||
66 | for (ALL_LIST_ELEMENTS_RO (pim_ifp->pim_ifchannel_list, ch_node, child)) | |
67 | { | |
68 | if (child->parent == ch) | |
69 | child->parent = NULL; | |
70 | } | |
71 | } | |
72 | ||
73 | /* | |
74 | * A (*,G) or a (*,*) is being created | |
75 | * find all the children that would point | |
76 | * at us. | |
77 | */ | |
78 | static void | |
79 | pim_ifchannel_find_new_children (struct pim_ifchannel *ch) | |
80 | { | |
81 | struct pim_interface *pim_ifp = ch->interface->info; | |
82 | struct pim_ifchannel *child; | |
83 | struct listnode *ch_node; | |
84 | ||
85 | // Basic Sanity that we are not being silly | |
4ed0af70 DS |
86 | if ((ch->sg.src.s_addr != INADDR_ANY) && |
87 | (ch->sg.grp.s_addr != INADDR_ANY)) | |
1a10fc74 DS |
88 | return; |
89 | ||
4ed0af70 DS |
90 | if ((ch->sg.src.s_addr == INADDR_ANY) && |
91 | (ch->sg.grp.s_addr == INADDR_ANY)) | |
1a10fc74 DS |
92 | return; |
93 | ||
94 | for (ALL_LIST_ELEMENTS_RO (pim_ifp->pim_ifchannel_list, ch_node, child)) | |
95 | { | |
4ed0af70 DS |
96 | if ((ch->sg.grp.s_addr != INADDR_ANY) && |
97 | (child->sg.grp.s_addr == ch->sg.grp.s_addr) && | |
1a10fc74 DS |
98 | (child != ch)) |
99 | child->parent = ch; | |
100 | } | |
101 | } | |
102 | ||
12e41d03 DL |
103 | void pim_ifchannel_free(struct pim_ifchannel *ch) |
104 | { | |
105 | zassert(!ch->t_ifjoin_expiry_timer); | |
106 | zassert(!ch->t_ifjoin_prune_pending_timer); | |
107 | zassert(!ch->t_ifassert_timer); | |
108 | ||
109 | XFREE(MTYPE_PIM_IFCHANNEL, ch); | |
110 | } | |
111 | ||
112 | void pim_ifchannel_delete(struct pim_ifchannel *ch) | |
113 | { | |
114 | struct pim_interface *pim_ifp; | |
115 | ||
116 | pim_ifp = ch->interface->info; | |
117 | zassert(pim_ifp); | |
118 | ||
1a10fc74 DS |
119 | /* |
120 | * When this channel is removed | |
121 | * we need to find all our children | |
122 | * and make sure our pointers are fixed | |
123 | */ | |
124 | pim_ifchannel_remove_children (ch); | |
125 | ||
12e41d03 DL |
126 | if (ch->ifjoin_state != PIM_IFJOIN_NOINFO) { |
127 | pim_upstream_update_join_desired(ch->upstream); | |
128 | } | |
129 | ||
e5905a3b | 130 | pim_upstream_del(ch->upstream, __PRETTY_FUNCTION__); |
5ce79466 | 131 | ch->upstream = NULL; |
12e41d03 DL |
132 | |
133 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
134 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
135 | THREAD_OFF(ch->t_ifassert_timer); | |
136 | ||
137 | /* | |
138 | notice that listnode_delete() can't be moved | |
139 | into pim_ifchannel_free() because the later is | |
140 | called by list_delete_all_node() | |
141 | */ | |
142 | listnode_delete(pim_ifp->pim_ifchannel_list, ch); | |
143 | ||
144 | pim_ifchannel_free(ch); | |
145 | } | |
12e41d03 DL |
146 | |
147 | static void delete_on_noinfo(struct pim_ifchannel *ch) | |
148 | { | |
1be8f9d3 DS |
149 | if (ch->local_ifmembership == PIM_IFMEMBERSHIP_NOINFO && |
150 | ch->ifjoin_state == PIM_IFJOIN_NOINFO) | |
12e41d03 | 151 | pim_ifchannel_delete(ch); |
1be8f9d3 | 152 | |
12e41d03 DL |
153 | } |
154 | ||
155 | void pim_ifchannel_ifjoin_switch(const char *caller, | |
156 | struct pim_ifchannel *ch, | |
157 | enum pim_ifjoin_state new_state) | |
158 | { | |
159 | enum pim_ifjoin_state old_state = ch->ifjoin_state; | |
160 | ||
04329d4e | 161 | if (PIM_DEBUG_PIM_EVENTS) |
594a78cc DS |
162 | zlog_debug ("PIM_IFCHANNEL(%s): %s is switching from %s to %s", |
163 | ch->interface->name, | |
04329d4e DS |
164 | pim_str_sg_dump (&ch->sg), |
165 | pim_ifchannel_ifjoin_name (ch->ifjoin_state), | |
166 | pim_ifchannel_ifjoin_name (new_state)); | |
167 | ||
168 | ||
12e41d03 | 169 | if (old_state == new_state) { |
7adf0260 DS |
170 | if (PIM_DEBUG_PIM_EVENTS) { |
171 | zlog_debug("%s calledby %s: non-transition on state %d (%s)", | |
172 | __PRETTY_FUNCTION__, caller, new_state, | |
173 | pim_ifchannel_ifjoin_name(new_state)); | |
174 | } | |
12e41d03 DL |
175 | return; |
176 | } | |
177 | ||
12e41d03 DL |
178 | ch->ifjoin_state = new_state; |
179 | ||
180 | /* Transition to/from NOINFO ? */ | |
1be8f9d3 DS |
181 | if ((old_state == PIM_IFJOIN_NOINFO) || |
182 | (new_state == PIM_IFJOIN_NOINFO)) { | |
12e41d03 DL |
183 | |
184 | if (PIM_DEBUG_PIM_EVENTS) { | |
ee1a477a | 185 | zlog_debug("PIM_IFCHANNEL_%s: (S,G)=%s on interface %s", |
12e41d03 | 186 | ((new_state == PIM_IFJOIN_NOINFO) ? "DOWN" : "UP"), |
ee1a477a | 187 | pim_str_sg_dump (&ch->sg), ch->interface->name); |
12e41d03 DL |
188 | } |
189 | ||
190 | /* | |
191 | Record uptime of state transition to/from NOINFO | |
192 | */ | |
193 | ch->ifjoin_creation = pim_time_monotonic_sec(); | |
194 | ||
195 | pim_upstream_update_join_desired(ch->upstream); | |
196 | pim_ifchannel_update_could_assert(ch); | |
197 | pim_ifchannel_update_assert_tracking_desired(ch); | |
198 | } | |
199 | } | |
200 | ||
201 | const char *pim_ifchannel_ifjoin_name(enum pim_ifjoin_state ifjoin_state) | |
202 | { | |
203 | switch (ifjoin_state) { | |
204 | case PIM_IFJOIN_NOINFO: return "NOINFO"; | |
205 | case PIM_IFJOIN_JOIN: return "JOIN"; | |
206 | case PIM_IFJOIN_PRUNE_PENDING: return "PRUNEP"; | |
207 | } | |
208 | ||
209 | return "ifjoin_bad_state"; | |
210 | } | |
211 | ||
212 | const char *pim_ifchannel_ifassert_name(enum pim_ifassert_state ifassert_state) | |
213 | { | |
214 | switch (ifassert_state) { | |
215 | case PIM_IFASSERT_NOINFO: return "NOINFO"; | |
216 | case PIM_IFASSERT_I_AM_WINNER: return "WINNER"; | |
217 | case PIM_IFASSERT_I_AM_LOSER: return "LOSER"; | |
218 | } | |
219 | ||
220 | return "ifassert_bad_state"; | |
221 | } | |
222 | ||
223 | /* | |
224 | RFC 4601: 4.6.5. Assert State Macros | |
225 | ||
226 | AssertWinner(S,G,I) defaults to NULL and AssertWinnerMetric(S,G,I) | |
227 | defaults to Infinity when in the NoInfo state. | |
228 | */ | |
229 | void reset_ifassert_state(struct pim_ifchannel *ch) | |
230 | { | |
231 | THREAD_OFF(ch->t_ifassert_timer); | |
232 | ||
233 | pim_ifassert_winner_set(ch, | |
234 | PIM_IFASSERT_NOINFO, | |
235 | qpim_inaddr_any, | |
236 | qpim_infinite_assert_metric); | |
237 | } | |
238 | ||
12e41d03 | 239 | struct pim_ifchannel *pim_ifchannel_find(struct interface *ifp, |
4ed0af70 | 240 | struct prefix_sg *sg) |
12e41d03 DL |
241 | { |
242 | struct pim_interface *pim_ifp; | |
243 | struct listnode *ch_node; | |
244 | struct pim_ifchannel *ch; | |
245 | ||
246 | zassert(ifp); | |
247 | ||
248 | pim_ifp = ifp->info; | |
249 | ||
250 | if (!pim_ifp) { | |
5074a423 | 251 | zlog_warn("%s: (S,G)=%s: multicast not enabled on interface %s", |
12e41d03 | 252 | __PRETTY_FUNCTION__, |
5074a423 | 253 | pim_str_sg_dump (sg), |
12e41d03 DL |
254 | ifp->name); |
255 | return 0; | |
256 | } | |
257 | ||
258 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) { | |
259 | if ( | |
4ed0af70 DS |
260 | (sg->src.s_addr == ch->sg.src.s_addr) && |
261 | (sg->grp.s_addr == ch->sg.grp.s_addr) | |
12e41d03 DL |
262 | ) { |
263 | return ch; | |
264 | } | |
265 | } | |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
270 | static void ifmembership_set(struct pim_ifchannel *ch, | |
271 | enum pim_ifmembership membership) | |
272 | { | |
273 | if (ch->local_ifmembership == membership) | |
274 | return; | |
275 | ||
7adf0260 | 276 | if (PIM_DEBUG_PIM_EVENTS) { |
ee1a477a | 277 | zlog_debug("%s: (S,G)=%s membership now is %s on interface %s", |
12e41d03 | 278 | __PRETTY_FUNCTION__, |
ee1a477a | 279 | pim_str_sg_dump (&ch->sg), |
12e41d03 DL |
280 | membership == PIM_IFMEMBERSHIP_INCLUDE ? "INCLUDE" : "NOINFO", |
281 | ch->interface->name); | |
282 | } | |
283 | ||
284 | ch->local_ifmembership = membership; | |
285 | ||
286 | pim_upstream_update_join_desired(ch->upstream); | |
287 | pim_ifchannel_update_could_assert(ch); | |
288 | pim_ifchannel_update_assert_tracking_desired(ch); | |
289 | } | |
290 | ||
291 | ||
292 | void pim_ifchannel_membership_clear(struct interface *ifp) | |
293 | { | |
294 | struct pim_interface *pim_ifp; | |
295 | struct listnode *ch_node; | |
296 | struct pim_ifchannel *ch; | |
297 | ||
298 | pim_ifp = ifp->info; | |
299 | zassert(pim_ifp); | |
300 | ||
301 | for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) { | |
302 | ifmembership_set(ch, PIM_IFMEMBERSHIP_NOINFO); | |
303 | } | |
304 | } | |
305 | ||
306 | void pim_ifchannel_delete_on_noinfo(struct interface *ifp) | |
307 | { | |
308 | struct pim_interface *pim_ifp; | |
309 | struct listnode *node; | |
310 | struct listnode *next_node; | |
311 | struct pim_ifchannel *ch; | |
312 | ||
313 | pim_ifp = ifp->info; | |
314 | zassert(pim_ifp); | |
315 | ||
316 | for (ALL_LIST_ELEMENTS(pim_ifp->pim_ifchannel_list, node, next_node, ch)) { | |
317 | delete_on_noinfo(ch); | |
318 | } | |
319 | } | |
320 | ||
1a10fc74 DS |
321 | /* |
322 | * For a given Interface, if we are given a S,G | |
323 | * Find the *,G (If we have it). | |
324 | * If we are passed a *,G, find the *,* ifchannel | |
325 | * if we have it. | |
326 | */ | |
327 | static struct pim_ifchannel * | |
328 | pim_ifchannel_find_parent (struct interface *ifp, | |
4ed0af70 | 329 | struct prefix_sg *sg) |
1a10fc74 | 330 | { |
4ed0af70 | 331 | struct prefix_sg parent_sg = *sg; |
1a10fc74 DS |
332 | |
333 | // (*,*) || (S,*) | |
4ed0af70 DS |
334 | if (((sg->src.s_addr == INADDR_ANY) && |
335 | (sg->grp.s_addr == INADDR_ANY)) || | |
336 | ((sg->src.s_addr != INADDR_ANY) && | |
337 | (sg->grp.s_addr == INADDR_ANY))) | |
1a10fc74 DS |
338 | return NULL; |
339 | ||
340 | // (S,G) | |
4ed0af70 DS |
341 | if ((sg->src.s_addr != INADDR_ANY) && |
342 | (sg->grp.s_addr != INADDR_ANY)) | |
1a10fc74 | 343 | { |
4ed0af70 | 344 | parent_sg.src.s_addr = INADDR_ANY; |
1a10fc74 DS |
345 | return pim_ifchannel_find (ifp, &parent_sg); |
346 | } | |
347 | ||
348 | // (*,G) -- Not going to find anything currently | |
4ed0af70 | 349 | parent_sg.grp.s_addr = INADDR_ANY; |
1a10fc74 DS |
350 | return pim_ifchannel_find (ifp, &parent_sg); |
351 | } | |
352 | ||
353 | struct pim_ifchannel * | |
354 | pim_ifchannel_add(struct interface *ifp, | |
4a40c37a | 355 | struct prefix_sg *sg, int flags) |
12e41d03 | 356 | { |
535db05b | 357 | struct pim_interface *pim_ifp; |
12e41d03 | 358 | struct pim_ifchannel *ch; |
535db05b | 359 | struct pim_upstream *up; |
12e41d03 | 360 | |
5074a423 | 361 | ch = pim_ifchannel_find(ifp, sg); |
12e41d03 DL |
362 | if (ch) |
363 | return ch; | |
364 | ||
535db05b DS |
365 | pim_ifp = ifp->info; |
366 | zassert(pim_ifp); | |
367 | ||
e5905a3b | 368 | up = pim_upstream_add(sg, NULL, flags, __PRETTY_FUNCTION__); |
535db05b | 369 | if (!up) { |
5074a423 | 370 | zlog_err("%s: could not attach upstream (S,G)=%s on interface %s", |
535db05b | 371 | __PRETTY_FUNCTION__, |
5074a423 | 372 | pim_str_sg_dump (sg), ifp->name); |
535db05b DS |
373 | return NULL; |
374 | } | |
375 | ||
376 | ch = XMALLOC(MTYPE_PIM_IFCHANNEL, sizeof(*ch)); | |
377 | if (!ch) { | |
5074a423 | 378 | zlog_warn("%s: pim_ifchannel_new() failure for (S,G)=%s on interface %s", |
535db05b | 379 | __PRETTY_FUNCTION__, |
5074a423 | 380 | pim_str_sg_dump (sg), ifp->name); |
12e41d03 | 381 | |
535db05b DS |
382 | return NULL; |
383 | } | |
12e41d03 | 384 | |
535db05b DS |
385 | ch->flags = 0; |
386 | ch->upstream = up; | |
387 | ch->interface = ifp; | |
5074a423 | 388 | ch->sg = *sg; |
1a10fc74 DS |
389 | ch->parent = pim_ifchannel_find_parent (ifp, sg); |
390 | pim_ifchannel_find_new_children (ch); | |
535db05b DS |
391 | ch->local_ifmembership = PIM_IFMEMBERSHIP_NOINFO; |
392 | ||
393 | ch->ifjoin_state = PIM_IFJOIN_NOINFO; | |
394 | ch->t_ifjoin_expiry_timer = NULL; | |
395 | ch->t_ifjoin_prune_pending_timer = NULL; | |
396 | ch->ifjoin_creation = 0; | |
397 | ||
398 | ch->ifassert_my_metric = pim_macro_ch_my_assert_metric_eval(ch); | |
399 | ch->ifassert_winner_metric = pim_macro_ch_my_assert_metric_eval (ch); | |
400 | ||
401 | ch->ifassert_winner.s_addr = 0; | |
402 | ||
403 | /* Assert state */ | |
404 | ch->t_ifassert_timer = NULL; | |
405 | reset_ifassert_state(ch); | |
406 | if (pim_macro_ch_could_assert_eval(ch)) | |
407 | PIM_IF_FLAG_SET_COULD_ASSERT(ch->flags); | |
408 | else | |
409 | PIM_IF_FLAG_UNSET_COULD_ASSERT(ch->flags); | |
410 | ||
411 | if (pim_macro_assert_tracking_desired_eval(ch)) | |
412 | PIM_IF_FLAG_SET_ASSERT_TRACKING_DESIRED(ch->flags); | |
413 | else | |
414 | PIM_IF_FLAG_UNSET_ASSERT_TRACKING_DESIRED(ch->flags); | |
415 | ||
416 | /* Attach to list */ | |
bbd64ce1 | 417 | listnode_add_sort(pim_ifp->pim_ifchannel_list, ch); |
535db05b | 418 | |
535db05b | 419 | return ch; |
12e41d03 DL |
420 | } |
421 | ||
422 | static void ifjoin_to_noinfo(struct pim_ifchannel *ch) | |
423 | { | |
424 | pim_forward_stop(ch); | |
425 | pim_ifchannel_ifjoin_switch(__PRETTY_FUNCTION__, ch, PIM_IFJOIN_NOINFO); | |
426 | delete_on_noinfo(ch); | |
427 | } | |
428 | ||
429 | static int on_ifjoin_expiry_timer(struct thread *t) | |
430 | { | |
431 | struct pim_ifchannel *ch; | |
432 | ||
433 | zassert(t); | |
434 | ch = THREAD_ARG(t); | |
435 | zassert(ch); | |
436 | ||
59ba0ac3 | 437 | ch->t_ifjoin_expiry_timer = NULL; |
12e41d03 DL |
438 | |
439 | zassert(ch->ifjoin_state == PIM_IFJOIN_JOIN); | |
440 | ||
441 | ifjoin_to_noinfo(ch); | |
442 | /* ch may have been deleted */ | |
443 | ||
444 | return 0; | |
445 | } | |
446 | ||
12e41d03 DL |
447 | static int on_ifjoin_prune_pending_timer(struct thread *t) |
448 | { | |
449 | struct pim_ifchannel *ch; | |
450 | int send_prune_echo; /* boolean */ | |
451 | struct interface *ifp; | |
452 | struct pim_interface *pim_ifp; | |
4ed0af70 | 453 | struct prefix_sg sg; |
12e41d03 DL |
454 | |
455 | zassert(t); | |
456 | ch = THREAD_ARG(t); | |
457 | zassert(ch); | |
458 | ||
59ba0ac3 | 459 | ch->t_ifjoin_prune_pending_timer = NULL; |
12e41d03 DL |
460 | |
461 | zassert(ch->ifjoin_state == PIM_IFJOIN_PRUNE_PENDING); | |
462 | ||
463 | /* Send PruneEcho(S,G) ? */ | |
464 | ifp = ch->interface; | |
465 | pim_ifp = ifp->info; | |
466 | send_prune_echo = (listcount(pim_ifp->pim_neighbor_list) > 1); | |
467 | ||
468 | /* Save (S,G) */ | |
05e451f8 | 469 | sg = ch->sg; |
12e41d03 DL |
470 | |
471 | ifjoin_to_noinfo(ch); | |
472 | /* from here ch may have been deleted */ | |
473 | ||
474 | if (send_prune_echo) | |
64a70f46 | 475 | pim_joinprune_send (ifp, pim_ifp->primary_address, |
05e451f8 | 476 | &sg, 0); |
12e41d03 DL |
477 | |
478 | return 0; | |
479 | } | |
480 | ||
481 | static void check_recv_upstream(int is_join, | |
482 | struct interface *recv_ifp, | |
483 | struct in_addr upstream, | |
4ed0af70 | 484 | struct prefix_sg *sg, |
12e41d03 DL |
485 | uint8_t source_flags, |
486 | int holdtime) | |
487 | { | |
488 | struct pim_upstream *up; | |
489 | ||
490 | /* Upstream (S,G) in Joined state ? */ | |
01d45d04 | 491 | up = pim_upstream_find(sg); |
12e41d03 DL |
492 | if (!up) |
493 | return; | |
494 | if (up->join_state != PIM_UPSTREAM_JOINED) | |
495 | return; | |
496 | ||
497 | /* Upstream (S,G) in Joined state */ | |
498 | ||
63c59d0c | 499 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) { |
12e41d03 | 500 | /* RPF'(S,G) not found */ |
01d45d04 | 501 | zlog_warn("%s %s: RPF'%s not found", |
12e41d03 | 502 | __FILE__, __PRETTY_FUNCTION__, |
01d45d04 | 503 | pim_str_sg_dump (sg)); |
12e41d03 DL |
504 | return; |
505 | } | |
506 | ||
507 | /* upstream directed to RPF'(S,G) ? */ | |
63c59d0c | 508 | if (upstream.s_addr != up->rpf.rpf_addr.u.prefix4.s_addr) { |
eaa54bdb DW |
509 | char up_str[INET_ADDRSTRLEN]; |
510 | char rpf_str[PREFIX_STRLEN]; | |
12e41d03 | 511 | pim_inet4_dump("<up?>", upstream, up_str, sizeof(up_str)); |
63c59d0c | 512 | pim_addr_dump("<rpf?>", &up->rpf.rpf_addr, rpf_str, sizeof(rpf_str)); |
01d45d04 | 513 | zlog_warn("%s %s: (S,G)=%s upstream=%s not directed to RPF'(S,G)=%s on interface %s", |
12e41d03 | 514 | __FILE__, __PRETTY_FUNCTION__, |
01d45d04 | 515 | pim_str_sg_dump (sg), |
12e41d03 DL |
516 | up_str, rpf_str, recv_ifp->name); |
517 | return; | |
518 | } | |
519 | /* upstream directed to RPF'(S,G) */ | |
520 | ||
521 | if (is_join) { | |
522 | /* Join(S,G) to RPF'(S,G) */ | |
63c59d0c | 523 | pim_upstream_join_suppress(up, up->rpf.rpf_addr.u.prefix4, holdtime); |
12e41d03 DL |
524 | return; |
525 | } | |
526 | ||
527 | /* Prune to RPF'(S,G) */ | |
528 | ||
529 | if (source_flags & PIM_RPT_BIT_MASK) { | |
530 | if (source_flags & PIM_WILDCARD_BIT_MASK) { | |
531 | /* Prune(*,G) to RPF'(S,G) */ | |
532 | pim_upstream_join_timer_decrease_to_t_override("Prune(*,G)", | |
63c59d0c | 533 | up, up->rpf.rpf_addr.u.prefix4); |
12e41d03 DL |
534 | return; |
535 | } | |
536 | ||
537 | /* Prune(S,G,rpt) to RPF'(S,G) */ | |
538 | pim_upstream_join_timer_decrease_to_t_override("Prune(S,G,rpt)", | |
63c59d0c | 539 | up, up->rpf.rpf_addr.u.prefix4); |
12e41d03 DL |
540 | return; |
541 | } | |
542 | ||
543 | /* Prune(S,G) to RPF'(S,G) */ | |
544 | pim_upstream_join_timer_decrease_to_t_override("Prune(S,G)", up, | |
63c59d0c | 545 | up->rpf.rpf_addr.u.prefix4); |
12e41d03 DL |
546 | } |
547 | ||
548 | static int nonlocal_upstream(int is_join, | |
549 | struct interface *recv_ifp, | |
550 | struct in_addr upstream, | |
4ed0af70 | 551 | struct prefix_sg *sg, |
12e41d03 DL |
552 | uint8_t source_flags, |
553 | uint16_t holdtime) | |
554 | { | |
555 | struct pim_interface *recv_pim_ifp; | |
556 | int is_local; /* boolean */ | |
557 | ||
558 | recv_pim_ifp = recv_ifp->info; | |
559 | zassert(recv_pim_ifp); | |
560 | ||
561 | is_local = (upstream.s_addr == recv_pim_ifp->primary_address.s_addr); | |
562 | ||
563 | if (PIM_DEBUG_PIM_TRACE) { | |
eaa54bdb | 564 | char up_str[INET_ADDRSTRLEN]; |
12e41d03 | 565 | pim_inet4_dump("<upstream?>", upstream, up_str, sizeof(up_str)); |
01d45d04 | 566 | zlog_warn("%s: recv %s (S,G)=%s to %s upstream=%s on %s", |
12e41d03 DL |
567 | __PRETTY_FUNCTION__, |
568 | is_join ? "join" : "prune", | |
01d45d04 | 569 | pim_str_sg_dump (sg), |
12e41d03 DL |
570 | is_local ? "local" : "non-local", |
571 | up_str, recv_ifp->name); | |
572 | } | |
573 | ||
574 | if (is_local) | |
575 | return 0; | |
576 | ||
577 | /* | |
578 | Since recv upstream addr was not directed to our primary | |
579 | address, check if we should react to it in any way. | |
580 | */ | |
01d45d04 | 581 | check_recv_upstream(is_join, recv_ifp, upstream, sg, |
12e41d03 DL |
582 | source_flags, holdtime); |
583 | ||
584 | return 1; /* non-local */ | |
585 | } | |
586 | ||
587 | void pim_ifchannel_join_add(struct interface *ifp, | |
588 | struct in_addr neigh_addr, | |
589 | struct in_addr upstream, | |
4ed0af70 | 590 | struct prefix_sg *sg, |
12e41d03 DL |
591 | uint8_t source_flags, |
592 | uint16_t holdtime) | |
593 | { | |
594 | struct pim_interface *pim_ifp; | |
595 | struct pim_ifchannel *ch; | |
596 | ||
597 | if (nonlocal_upstream(1 /* join */, ifp, upstream, | |
01d45d04 | 598 | sg, source_flags, holdtime)) { |
12e41d03 DL |
599 | return; |
600 | } | |
601 | ||
4a40c37a | 602 | ch = pim_ifchannel_add(ifp, sg, PIM_UPSTREAM_FLAG_MASK_SRC_PIM); |
12e41d03 DL |
603 | if (!ch) |
604 | return; | |
605 | ||
606 | /* | |
607 | RFC 4601: 4.6.1. (S,G) Assert Message State Machine | |
608 | ||
609 | Transitions from "I am Assert Loser" State | |
610 | ||
611 | Receive Join(S,G) on Interface I | |
612 | ||
613 | We receive a Join(S,G) that has the Upstream Neighbor Address | |
614 | field set to my primary IP address on interface I. The action is | |
615 | to transition to NoInfo state, delete this (S,G) assert state | |
616 | (Actions A5 below), and allow the normal PIM Join/Prune mechanisms | |
617 | to operate. | |
618 | ||
619 | Notice: The nonlocal_upstream() test above ensures the upstream | |
620 | address of the join message is our primary address. | |
621 | */ | |
622 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { | |
eaa54bdb | 623 | char neigh_str[INET_ADDRSTRLEN]; |
12e41d03 | 624 | pim_inet4_dump("<neigh?>", neigh_addr, neigh_str, sizeof(neigh_str)); |
5074a423 | 625 | zlog_warn("%s: Assert Loser recv Join%s from %s on %s", |
12e41d03 | 626 | __PRETTY_FUNCTION__, |
ee1a477a | 627 | pim_str_sg_dump (sg), neigh_str, ifp->name); |
12e41d03 DL |
628 | |
629 | assert_action_a5(ch); | |
630 | } | |
631 | ||
632 | pim_ifp = ifp->info; | |
633 | zassert(pim_ifp); | |
634 | ||
635 | switch (ch->ifjoin_state) { | |
636 | case PIM_IFJOIN_NOINFO: | |
637 | pim_ifchannel_ifjoin_switch(__PRETTY_FUNCTION__, ch, PIM_IFJOIN_JOIN); | |
638 | if (pim_macro_chisin_oiflist(ch)) { | |
5b668dd7 | 639 | pim_upstream_inherited_olist (ch->upstream); |
12e41d03 DL |
640 | pim_forward_start(ch); |
641 | } | |
642 | break; | |
643 | case PIM_IFJOIN_JOIN: | |
644 | zassert(!ch->t_ifjoin_prune_pending_timer); | |
645 | ||
646 | /* | |
647 | In the JOIN state ch->t_ifjoin_expiry_timer may be NULL due to a | |
648 | previously received join message with holdtime=0xFFFF. | |
649 | */ | |
650 | if (ch->t_ifjoin_expiry_timer) { | |
651 | unsigned long remain = | |
652 | thread_timer_remain_second(ch->t_ifjoin_expiry_timer); | |
653 | if (remain > holdtime) { | |
654 | /* | |
655 | RFC 4601: 4.5.3. Receiving (S,G) Join/Prune Messages | |
656 | ||
657 | Transitions from Join State | |
658 | ||
659 | The (S,G) downstream state machine on interface I remains in | |
660 | Join state, and the Expiry Timer (ET) is restarted, set to | |
661 | maximum of its current value and the HoldTime from the | |
662 | triggering Join/Prune message. | |
663 | ||
664 | Conclusion: Do not change the ET if the current value is | |
665 | higher than the received join holdtime. | |
666 | */ | |
667 | return; | |
668 | } | |
669 | } | |
670 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
671 | break; | |
672 | case PIM_IFJOIN_PRUNE_PENDING: | |
673 | zassert(!ch->t_ifjoin_expiry_timer); | |
674 | zassert(ch->t_ifjoin_prune_pending_timer); | |
675 | THREAD_OFF(ch->t_ifjoin_prune_pending_timer); | |
676 | pim_ifchannel_ifjoin_switch(__PRETTY_FUNCTION__, ch, PIM_IFJOIN_JOIN); | |
677 | break; | |
678 | } | |
679 | ||
12e41d03 DL |
680 | if (holdtime != 0xFFFF) { |
681 | THREAD_TIMER_ON(master, ch->t_ifjoin_expiry_timer, | |
682 | on_ifjoin_expiry_timer, | |
683 | ch, holdtime); | |
684 | } | |
685 | } | |
686 | ||
687 | void pim_ifchannel_prune(struct interface *ifp, | |
688 | struct in_addr upstream, | |
4ed0af70 | 689 | struct prefix_sg *sg, |
12e41d03 DL |
690 | uint8_t source_flags, |
691 | uint16_t holdtime) | |
692 | { | |
693 | struct pim_ifchannel *ch; | |
694 | int jp_override_interval_msec; | |
695 | ||
696 | if (nonlocal_upstream(0 /* prune */, ifp, upstream, | |
01d45d04 | 697 | sg, source_flags, holdtime)) { |
12e41d03 DL |
698 | return; |
699 | } | |
700 | ||
4a40c37a | 701 | ch = pim_ifchannel_add(ifp, sg, PIM_UPSTREAM_FLAG_MASK_SRC_PIM); |
12e41d03 DL |
702 | if (!ch) |
703 | return; | |
704 | ||
705 | switch (ch->ifjoin_state) { | |
706 | case PIM_IFJOIN_NOINFO: | |
707 | case PIM_IFJOIN_PRUNE_PENDING: | |
708 | /* nothing to do */ | |
709 | break; | |
710 | case PIM_IFJOIN_JOIN: | |
711 | { | |
712 | struct pim_interface *pim_ifp; | |
713 | ||
714 | pim_ifp = ifp->info; | |
715 | ||
716 | zassert(ch->t_ifjoin_expiry_timer); | |
717 | zassert(!ch->t_ifjoin_prune_pending_timer); | |
718 | ||
719 | THREAD_OFF(ch->t_ifjoin_expiry_timer); | |
720 | ||
721 | pim_ifchannel_ifjoin_switch(__PRETTY_FUNCTION__, ch, PIM_IFJOIN_PRUNE_PENDING); | |
722 | ||
723 | if (listcount(pim_ifp->pim_neighbor_list) > 1) { | |
724 | jp_override_interval_msec = pim_if_jp_override_interval_msec(ifp); | |
725 | } | |
726 | else { | |
727 | jp_override_interval_msec = 0; /* schedule to expire immediately */ | |
728 | /* If we called ifjoin_prune() directly instead, care should | |
729 | be taken not to use "ch" afterwards since it would be | |
730 | deleted. */ | |
731 | } | |
732 | ||
733 | THREAD_TIMER_MSEC_ON(master, ch->t_ifjoin_prune_pending_timer, | |
734 | on_ifjoin_prune_pending_timer, | |
735 | ch, jp_override_interval_msec); | |
736 | ||
737 | zassert(!ch->t_ifjoin_expiry_timer); | |
738 | zassert(ch->t_ifjoin_prune_pending_timer); | |
739 | } | |
740 | break; | |
741 | } | |
742 | ||
743 | } | |
744 | ||
745 | void pim_ifchannel_local_membership_add(struct interface *ifp, | |
4ed0af70 | 746 | struct prefix_sg *sg) |
12e41d03 DL |
747 | { |
748 | struct pim_ifchannel *ch; | |
749 | struct pim_interface *pim_ifp; | |
750 | ||
751 | /* PIM enabled on interface? */ | |
752 | pim_ifp = ifp->info; | |
753 | if (!pim_ifp) | |
754 | return; | |
755 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) | |
756 | return; | |
757 | ||
4a40c37a | 758 | ch = pim_ifchannel_add(ifp, sg, PIM_UPSTREAM_FLAG_MASK_SRC_IGMP); |
12e41d03 DL |
759 | if (!ch) { |
760 | return; | |
761 | } | |
762 | ||
763 | ifmembership_set(ch, PIM_IFMEMBERSHIP_INCLUDE); | |
764 | ||
dfbbce1d DS |
765 | if (sg->src.s_addr == INADDR_ANY) |
766 | { | |
767 | struct pim_upstream *up = pim_upstream_find (sg); | |
768 | struct pim_upstream *child; | |
769 | struct listnode *up_node; | |
770 | ||
0f588989 | 771 | for (ALL_LIST_ELEMENTS_RO (pim_upstream_list, up_node, child)) |
dfbbce1d DS |
772 | { |
773 | if (child->parent == up) | |
774 | { | |
775 | if (PIM_DEBUG_EVENTS) | |
776 | { | |
777 | char buff[100]; | |
778 | ||
779 | strcpy (buff, pim_str_sg_dump (&up->sg)); | |
594a78cc | 780 | zlog_debug("%s %s: IGMP (S,G)=%s(%s) from %s", |
dfbbce1d | 781 | __FILE__, __PRETTY_FUNCTION__, |
594a78cc | 782 | buff, ifp->name, pim_str_sg_dump (sg)); |
dfbbce1d DS |
783 | } |
784 | ||
785 | if (pim_upstream_evaluate_join_desired (child)) | |
786 | { | |
787 | pim_channel_add_oif (child->channel_oil, ifp, PIM_OIF_FLAG_PROTO_PIM); | |
788 | pim_upstream_switch (child, PIM_UPSTREAM_JOINED); | |
789 | } | |
790 | } | |
791 | } | |
792 | } | |
12e41d03 DL |
793 | } |
794 | ||
795 | void pim_ifchannel_local_membership_del(struct interface *ifp, | |
4ed0af70 | 796 | struct prefix_sg *sg) |
12e41d03 DL |
797 | { |
798 | struct pim_ifchannel *ch; | |
799 | struct pim_interface *pim_ifp; | |
800 | ||
801 | /* PIM enabled on interface? */ | |
802 | pim_ifp = ifp->info; | |
803 | if (!pim_ifp) | |
804 | return; | |
805 | if (!PIM_IF_TEST_PIM(pim_ifp->options)) | |
806 | return; | |
807 | ||
1103466b | 808 | ch = pim_ifchannel_find(ifp, sg); |
12e41d03 DL |
809 | if (!ch) |
810 | return; | |
811 | ||
812 | ifmembership_set(ch, PIM_IFMEMBERSHIP_NOINFO); | |
813 | ||
dfbbce1d DS |
814 | if (sg->src.s_addr == INADDR_ANY) |
815 | { | |
816 | struct pim_upstream *up = pim_upstream_find (sg); | |
817 | struct pim_upstream *child; | |
818 | struct listnode *up_node; | |
819 | ||
0f588989 | 820 | for (ALL_LIST_ELEMENTS_RO (pim_upstream_list, up_node, child)) |
dfbbce1d DS |
821 | { |
822 | if (child->parent == up) | |
823 | { | |
824 | struct channel_oil *c_oil = child->channel_oil; | |
7c4002dd | 825 | struct pim_ifchannel *chchannel = pim_ifchannel_find (ifp, &child->sg); |
dfbbce1d DS |
826 | struct pim_interface *pim_ifp = ifp->info; |
827 | ||
828 | if (PIM_DEBUG_EVENTS) | |
829 | { | |
830 | char buff[100]; | |
831 | strcpy (buff, pim_str_sg_dump (&up->sg)); | |
594a78cc | 832 | zlog_debug("%s %s: Prune(S,G)=%s(%s) from %s", |
dfbbce1d | 833 | __FILE__, __PRETTY_FUNCTION__, |
594a78cc | 834 | buff, ifp->name, pim_str_sg_dump (&child->sg)); |
dfbbce1d DS |
835 | } |
836 | ||
837 | if (!pim_upstream_evaluate_join_desired (child)) | |
838 | pim_channel_del_oif (c_oil, ifp, PIM_OIF_FLAG_PROTO_PIM); | |
839 | ||
840 | /* | |
841 | * If the S,G has no if channel and the c_oil still | |
842 | * has output here then the *,G was supplying the implied | |
843 | * if channel. So remove it. | |
844 | */ | |
7c4002dd | 845 | if (!chchannel && c_oil->oil.mfcc_ttls[pim_ifp->mroute_vif_index]) |
dfbbce1d DS |
846 | pim_channel_del_oif (c_oil, ifp, PIM_OIF_FLAG_PROTO_PIM); |
847 | } | |
848 | } | |
849 | } | |
12e41d03 DL |
850 | delete_on_noinfo(ch); |
851 | } | |
852 | ||
853 | void pim_ifchannel_update_could_assert(struct pim_ifchannel *ch) | |
854 | { | |
855 | int old_couldassert = PIM_FORCE_BOOLEAN(PIM_IF_FLAG_TEST_COULD_ASSERT(ch->flags)); | |
856 | int new_couldassert = PIM_FORCE_BOOLEAN(pim_macro_ch_could_assert_eval(ch)); | |
857 | ||
858 | if (new_couldassert == old_couldassert) | |
859 | return; | |
860 | ||
861 | if (PIM_DEBUG_PIM_EVENTS) { | |
eaa54bdb DW |
862 | char src_str[INET_ADDRSTRLEN]; |
863 | char grp_str[INET_ADDRSTRLEN]; | |
4ed0af70 DS |
864 | pim_inet4_dump("<src?>", ch->sg.src, src_str, sizeof(src_str)); |
865 | pim_inet4_dump("<grp?>", ch->sg.grp, grp_str, sizeof(grp_str)); | |
12e41d03 DL |
866 | zlog_debug("%s: CouldAssert(%s,%s,%s) changed from %d to %d", |
867 | __PRETTY_FUNCTION__, | |
868 | src_str, grp_str, ch->interface->name, | |
869 | old_couldassert, new_couldassert); | |
870 | } | |
871 | ||
872 | if (new_couldassert) { | |
873 | /* CouldAssert(S,G,I) switched from FALSE to TRUE */ | |
874 | PIM_IF_FLAG_SET_COULD_ASSERT(ch->flags); | |
875 | } | |
876 | else { | |
877 | /* CouldAssert(S,G,I) switched from TRUE to FALSE */ | |
878 | PIM_IF_FLAG_UNSET_COULD_ASSERT(ch->flags); | |
879 | ||
880 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_WINNER) { | |
881 | assert_action_a4(ch); | |
882 | } | |
883 | } | |
884 | ||
885 | pim_ifchannel_update_my_assert_metric(ch); | |
886 | } | |
887 | ||
888 | /* | |
889 | my_assert_metric may be affected by: | |
890 | ||
891 | CouldAssert(S,G) | |
892 | pim_ifp->primary_address | |
893 | rpf->source_nexthop.mrib_metric_preference; | |
894 | rpf->source_nexthop.mrib_route_metric; | |
895 | */ | |
896 | void pim_ifchannel_update_my_assert_metric(struct pim_ifchannel *ch) | |
897 | { | |
898 | struct pim_assert_metric my_metric_new = pim_macro_ch_my_assert_metric_eval(ch); | |
899 | ||
900 | if (pim_assert_metric_match(&my_metric_new, &ch->ifassert_my_metric)) | |
901 | return; | |
902 | ||
903 | if (PIM_DEBUG_PIM_EVENTS) { | |
eaa54bdb DW |
904 | char src_str[INET_ADDRSTRLEN]; |
905 | char grp_str[INET_ADDRSTRLEN]; | |
906 | char old_addr_str[INET_ADDRSTRLEN]; | |
907 | char new_addr_str[INET_ADDRSTRLEN]; | |
4ed0af70 DS |
908 | pim_inet4_dump("<src?>", ch->sg.src, src_str, sizeof(src_str)); |
909 | pim_inet4_dump("<grp?>", ch->sg.grp, grp_str, sizeof(grp_str)); | |
12e41d03 DL |
910 | pim_inet4_dump("<old_addr?>", ch->ifassert_my_metric.ip_address, old_addr_str, sizeof(old_addr_str)); |
911 | pim_inet4_dump("<new_addr?>", my_metric_new.ip_address, new_addr_str, sizeof(new_addr_str)); | |
912 | zlog_debug("%s: my_assert_metric(%s,%s,%s) changed from %u,%u,%u,%s to %u,%u,%u,%s", | |
913 | __PRETTY_FUNCTION__, | |
914 | src_str, grp_str, ch->interface->name, | |
915 | ch->ifassert_my_metric.rpt_bit_flag, | |
916 | ch->ifassert_my_metric.metric_preference, | |
917 | ch->ifassert_my_metric.route_metric, | |
918 | old_addr_str, | |
919 | my_metric_new.rpt_bit_flag, | |
920 | my_metric_new.metric_preference, | |
921 | my_metric_new.route_metric, | |
922 | new_addr_str); | |
923 | } | |
924 | ||
925 | ch->ifassert_my_metric = my_metric_new; | |
926 | ||
927 | if (pim_assert_metric_better(&ch->ifassert_my_metric, | |
928 | &ch->ifassert_winner_metric)) { | |
929 | assert_action_a5(ch); | |
930 | } | |
931 | } | |
932 | ||
933 | void pim_ifchannel_update_assert_tracking_desired(struct pim_ifchannel *ch) | |
934 | { | |
935 | int old_atd = PIM_FORCE_BOOLEAN(PIM_IF_FLAG_TEST_ASSERT_TRACKING_DESIRED(ch->flags)); | |
936 | int new_atd = PIM_FORCE_BOOLEAN(pim_macro_assert_tracking_desired_eval(ch)); | |
937 | ||
938 | if (new_atd == old_atd) | |
939 | return; | |
940 | ||
941 | if (PIM_DEBUG_PIM_EVENTS) { | |
eaa54bdb DW |
942 | char src_str[INET_ADDRSTRLEN]; |
943 | char grp_str[INET_ADDRSTRLEN]; | |
4ed0af70 DS |
944 | pim_inet4_dump("<src?>", ch->sg.src, src_str, sizeof(src_str)); |
945 | pim_inet4_dump("<grp?>", ch->sg.grp, grp_str, sizeof(grp_str)); | |
12e41d03 DL |
946 | zlog_debug("%s: AssertTrackingDesired(%s,%s,%s) changed from %d to %d", |
947 | __PRETTY_FUNCTION__, | |
948 | src_str, grp_str, ch->interface->name, | |
949 | old_atd, new_atd); | |
950 | } | |
951 | ||
952 | if (new_atd) { | |
953 | /* AssertTrackingDesired(S,G,I) switched from FALSE to TRUE */ | |
954 | PIM_IF_FLAG_SET_ASSERT_TRACKING_DESIRED(ch->flags); | |
955 | } | |
956 | else { | |
957 | /* AssertTrackingDesired(S,G,I) switched from TRUE to FALSE */ | |
958 | PIM_IF_FLAG_UNSET_ASSERT_TRACKING_DESIRED(ch->flags); | |
959 | ||
960 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { | |
961 | assert_action_a5(ch); | |
962 | } | |
963 | } | |
964 | } | |
c8507a16 DS |
965 | |
966 | /* | |
967 | * If we have a new pim interface, check to | |
968 | * see if any of the pre-existing channels have | |
969 | * their upstream out that way and turn on forwarding | |
970 | * for that ifchannel then. | |
971 | */ | |
972 | void | |
973 | pim_ifchannel_scan_forward_start (struct interface *new_ifp) | |
974 | { | |
975 | struct listnode *ifnode; | |
976 | struct interface *ifp; | |
977 | struct pim_interface *new_pim_ifp = new_ifp->info; | |
978 | ||
979 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), ifnode, ifp)) | |
980 | { | |
981 | struct pim_interface *loop_pim_ifp = ifp->info; | |
982 | struct listnode *ch_node; | |
983 | struct pim_ifchannel *ch; | |
984 | ||
985 | if (!loop_pim_ifp) | |
986 | continue; | |
987 | ||
988 | if (new_pim_ifp == loop_pim_ifp) | |
989 | continue; | |
990 | ||
991 | for (ALL_LIST_ELEMENTS_RO (loop_pim_ifp->pim_ifchannel_list, ch_node, ch)) | |
992 | { | |
993 | if (ch->ifjoin_state == PIM_IFJOIN_JOIN) | |
994 | { | |
995 | struct pim_upstream *up = ch->upstream; | |
996 | if ((!up->channel_oil) && | |
997 | (up->rpf.source_nexthop.interface == new_ifp)) | |
998 | pim_forward_start (ch); | |
999 | } | |
1000 | } | |
1001 | } | |
1002 | } |