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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 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 | */ | |
19 | ||
20 | #include <zebra.h> | |
21 | ||
22 | #include "log.h" | |
23 | #include "memory.h" | |
24 | #include "linklist.h" | |
25 | #include "if.h" | |
26 | #include "hash.h" | |
27 | #include "jhash.h" | |
28 | ||
29 | #include "pimd.h" | |
30 | #include "pim_oil.h" | |
31 | #include "pim_str.h" | |
32 | #include "pim_iface.h" | |
33 | #include "pim_time.h" | |
34 | #include "pim_vxlan.h" | |
35 | ||
36 | static void pim_channel_update_mute(struct channel_oil *c_oil); | |
37 | ||
38 | char *pim_channel_oil_dump(struct channel_oil *c_oil, char *buf, size_t size) | |
39 | { | |
40 | char *out; | |
41 | struct interface *ifp; | |
42 | pim_sgaddr sg; | |
43 | int i; | |
44 | ||
45 | sg.src = *oil_origin(c_oil); | |
46 | sg.grp = *oil_mcastgrp(c_oil); | |
47 | ifp = pim_if_find_by_vif_index(c_oil->pim, *oil_parent(c_oil)); | |
48 | snprintfrr(buf, size, "%pSG IIF: %s, OIFS: ", &sg, | |
49 | ifp ? ifp->name : "(?)"); | |
50 | ||
51 | out = buf + strlen(buf); | |
52 | for (i = 0; i < MAXVIFS; i++) { | |
53 | if (oil_if_has(c_oil, i) != 0) { | |
54 | ifp = pim_if_find_by_vif_index(c_oil->pim, i); | |
55 | snprintf(out, buf + size - out, "%s ", | |
56 | ifp ? ifp->name : "(?)"); | |
57 | out += strlen(out); | |
58 | } | |
59 | } | |
60 | ||
61 | return buf; | |
62 | } | |
63 | ||
64 | int pim_channel_oil_compare(const struct channel_oil *cc1, | |
65 | const struct channel_oil *cc2) | |
66 | { | |
67 | struct channel_oil *c1 = (struct channel_oil *)cc1; | |
68 | struct channel_oil *c2 = (struct channel_oil *)cc2; | |
69 | int rv; | |
70 | ||
71 | rv = pim_addr_cmp(*oil_mcastgrp(c1), *oil_mcastgrp(c2)); | |
72 | if (rv) | |
73 | return rv; | |
74 | rv = pim_addr_cmp(*oil_origin(c1), *oil_origin(c2)); | |
75 | if (rv) | |
76 | return rv; | |
77 | return 0; | |
78 | } | |
79 | ||
80 | void pim_oil_init(struct pim_instance *pim) | |
81 | { | |
82 | rb_pim_oil_init(&pim->channel_oil_head); | |
83 | } | |
84 | ||
85 | void pim_oil_terminate(struct pim_instance *pim) | |
86 | { | |
87 | struct channel_oil *c_oil; | |
88 | ||
89 | while ((c_oil = rb_pim_oil_pop(&pim->channel_oil_head))) | |
90 | pim_channel_oil_free(c_oil); | |
91 | ||
92 | rb_pim_oil_fini(&pim->channel_oil_head); | |
93 | } | |
94 | ||
95 | void pim_channel_oil_free(struct channel_oil *c_oil) | |
96 | { | |
97 | XFREE(MTYPE_PIM_CHANNEL_OIL, c_oil); | |
98 | } | |
99 | ||
100 | struct channel_oil *pim_find_channel_oil(struct pim_instance *pim, | |
101 | pim_sgaddr *sg) | |
102 | { | |
103 | struct channel_oil *c_oil = NULL; | |
104 | struct channel_oil lookup; | |
105 | ||
106 | *oil_mcastgrp(&lookup) = sg->grp; | |
107 | *oil_origin(&lookup) = sg->src; | |
108 | ||
109 | c_oil = rb_pim_oil_find(&pim->channel_oil_head, &lookup); | |
110 | ||
111 | return c_oil; | |
112 | } | |
113 | ||
114 | struct channel_oil *pim_channel_oil_add(struct pim_instance *pim, | |
115 | pim_sgaddr *sg, const char *name) | |
116 | { | |
117 | struct channel_oil *c_oil; | |
118 | ||
119 | c_oil = pim_find_channel_oil(pim, sg); | |
120 | if (c_oil) { | |
121 | ++c_oil->oil_ref_count; | |
122 | ||
123 | if (!c_oil->up) { | |
124 | /* channel might be present prior to upstream */ | |
125 | c_oil->up = pim_upstream_find( | |
126 | pim, sg); | |
127 | /* if the upstream entry is being anchored to an | |
128 | * already existing channel OIL we need to re-evaluate | |
129 | * the "Mute" state on AA OIFs | |
130 | */ | |
131 | pim_channel_update_mute(c_oil); | |
132 | } | |
133 | ||
134 | /* check if the IIF has changed | |
135 | * XXX - is this really needed | |
136 | */ | |
137 | pim_upstream_mroute_iif_update(c_oil, __func__); | |
138 | ||
139 | if (PIM_DEBUG_MROUTE) | |
140 | zlog_debug( | |
141 | "%s(%s): Existing oil for %pSG Ref Count: %d (Post Increment)", | |
142 | __func__, name, sg, c_oil->oil_ref_count); | |
143 | return c_oil; | |
144 | } | |
145 | ||
146 | c_oil = XCALLOC(MTYPE_PIM_CHANNEL_OIL, sizeof(*c_oil)); | |
147 | ||
148 | *oil_mcastgrp(c_oil) = sg->grp; | |
149 | *oil_origin(c_oil) = sg->src; | |
150 | ||
151 | *oil_parent(c_oil) = MAXVIFS; | |
152 | c_oil->oil_ref_count = 1; | |
153 | c_oil->installed = 0; | |
154 | c_oil->up = pim_upstream_find(pim, sg); | |
155 | c_oil->pim = pim; | |
156 | ||
157 | rb_pim_oil_add(&pim->channel_oil_head, c_oil); | |
158 | ||
159 | if (PIM_DEBUG_MROUTE) | |
160 | zlog_debug("%s(%s): c_oil %pSG add", __func__, name, sg); | |
161 | ||
162 | return c_oil; | |
163 | } | |
164 | ||
165 | struct channel_oil *pim_channel_oil_del(struct channel_oil *c_oil, | |
166 | const char *name) | |
167 | { | |
168 | if (PIM_DEBUG_MROUTE) { | |
169 | pim_sgaddr sg = {.src = *oil_mcastgrp(c_oil), | |
170 | .grp = *oil_origin(c_oil)}; | |
171 | ||
172 | zlog_debug( | |
173 | "%s(%s): Del oil for %pSG, Ref Count: %d (Predecrement)", | |
174 | __func__, name, &sg, c_oil->oil_ref_count); | |
175 | } | |
176 | --c_oil->oil_ref_count; | |
177 | ||
178 | if (c_oil->oil_ref_count < 1) { | |
179 | /* | |
180 | * notice that listnode_delete() can't be moved | |
181 | * into pim_channel_oil_free() because the later is | |
182 | * called by list_delete_all_node() | |
183 | */ | |
184 | c_oil->up = NULL; | |
185 | rb_pim_oil_del(&c_oil->pim->channel_oil_head, c_oil); | |
186 | ||
187 | pim_channel_oil_free(c_oil); | |
188 | return NULL; | |
189 | } | |
190 | ||
191 | return c_oil; | |
192 | } | |
193 | ||
194 | void pim_channel_oil_upstream_deref(struct channel_oil *c_oil) | |
195 | { | |
196 | /* The upstream entry associated with a channel_oil is abt to be | |
197 | * deleted. If the channel_oil is kept around because of other | |
198 | * references we need to remove upstream based states out of it. | |
199 | */ | |
200 | c_oil = pim_channel_oil_del(c_oil, __func__); | |
201 | if (c_oil) { | |
202 | /* note: here we assume that c_oil->up has already been | |
203 | * cleared | |
204 | */ | |
205 | pim_channel_update_mute(c_oil); | |
206 | } | |
207 | } | |
208 | ||
209 | int pim_channel_del_oif(struct channel_oil *channel_oil, struct interface *oif, | |
210 | uint32_t proto_mask, const char *caller) | |
211 | { | |
212 | struct pim_interface *pim_ifp; | |
213 | ||
214 | assert(channel_oil); | |
215 | assert(oif); | |
216 | ||
217 | pim_ifp = oif->info; | |
218 | ||
219 | assertf(pim_ifp->mroute_vif_index >= 0, | |
220 | "trying to del OIF %s with VIF (%d)", oif->name, | |
221 | pim_ifp->mroute_vif_index); | |
222 | ||
223 | /* | |
224 | * Don't do anything if we've been asked to remove a source | |
225 | * that is not actually on it. | |
226 | */ | |
227 | if (!(channel_oil->oif_flags[pim_ifp->mroute_vif_index] & proto_mask)) { | |
228 | if (PIM_DEBUG_MROUTE) { | |
229 | zlog_debug( | |
230 | "%s %s: no existing protocol mask %u(%u) for requested OIF %s (vif_index=%d, min_ttl=%d) for channel (S,G)=(%pPAs,%pPAs)", | |
231 | __FILE__, __func__, proto_mask, | |
232 | channel_oil | |
233 | ->oif_flags[pim_ifp->mroute_vif_index], | |
234 | oif->name, pim_ifp->mroute_vif_index, | |
235 | oil_if_has(channel_oil, pim_ifp->mroute_vif_index), | |
236 | oil_origin(channel_oil), | |
237 | oil_mcastgrp(channel_oil)); | |
238 | } | |
239 | return 0; | |
240 | } | |
241 | ||
242 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] &= ~proto_mask; | |
243 | ||
244 | if (channel_oil->oif_flags[pim_ifp->mroute_vif_index] & | |
245 | PIM_OIF_FLAG_PROTO_ANY) { | |
246 | if (PIM_DEBUG_MROUTE) { | |
247 | zlog_debug( | |
248 | "%s %s: other protocol masks remain for requested OIF %s (vif_index=%d, min_ttl=%d) for channel (S,G)=(%pPAs,%pPAs)", | |
249 | __FILE__, __func__, oif->name, | |
250 | pim_ifp->mroute_vif_index, | |
251 | oil_if_has(channel_oil, pim_ifp->mroute_vif_index), | |
252 | oil_origin(channel_oil), | |
253 | oil_mcastgrp(channel_oil)); | |
254 | } | |
255 | return 0; | |
256 | } | |
257 | ||
258 | oil_if_set(channel_oil, pim_ifp->mroute_vif_index, 0); | |
259 | /* clear mute; will be re-evaluated when the OIF becomes valid again */ | |
260 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] &= ~PIM_OIF_FLAG_MUTE; | |
261 | ||
262 | if (pim_upstream_mroute_add(channel_oil, __func__)) { | |
263 | if (PIM_DEBUG_MROUTE) { | |
264 | zlog_debug( | |
265 | "%s %s: could not remove output interface %s (vif_index=%d) for channel (S,G)=(%pPAs,%pPAs)", | |
266 | __FILE__, __func__, oif->name, | |
267 | pim_ifp->mroute_vif_index, | |
268 | oil_origin(channel_oil), | |
269 | oil_mcastgrp(channel_oil)); | |
270 | } | |
271 | return -1; | |
272 | } | |
273 | ||
274 | --channel_oil->oil_size; | |
275 | ||
276 | if (PIM_DEBUG_MROUTE) { | |
277 | zlog_debug( | |
278 | "%s(%s): (S,G)=(%pPAs,%pPAs): proto_mask=%u IIF:%d OIF=%s vif_index=%d", | |
279 | __func__, caller, oil_origin(channel_oil), | |
280 | oil_mcastgrp(channel_oil), | |
281 | proto_mask, | |
282 | *oil_parent(channel_oil), oif->name, | |
283 | pim_ifp->mroute_vif_index); | |
284 | } | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
289 | void pim_channel_del_inherited_oif(struct channel_oil *c_oil, | |
290 | struct interface *oif, const char *caller) | |
291 | { | |
292 | struct pim_upstream *up = c_oil->up; | |
293 | ||
294 | pim_channel_del_oif(c_oil, oif, PIM_OIF_FLAG_PROTO_STAR, | |
295 | caller); | |
296 | ||
297 | /* if an inherited OIF is being removed join-desired can change | |
298 | * if the inherited OIL is now empty and KAT is running | |
299 | */ | |
300 | if (up && !pim_addr_is_any(up->sg.src) && | |
301 | pim_upstream_empty_inherited_olist(up)) | |
302 | pim_upstream_update_join_desired(up->pim, up); | |
303 | } | |
304 | ||
305 | static bool pim_channel_eval_oif_mute(struct channel_oil *c_oil, | |
306 | struct pim_interface *pim_ifp) | |
307 | { | |
308 | struct pim_interface *pim_reg_ifp; | |
309 | struct pim_interface *vxlan_ifp; | |
310 | bool do_mute = false; | |
311 | struct pim_instance *pim = c_oil->pim; | |
312 | ||
313 | if (!c_oil->up) | |
314 | return do_mute; | |
315 | ||
316 | pim_reg_ifp = pim->regiface->info; | |
317 | if (pim_ifp == pim_reg_ifp) { | |
318 | /* suppress pimreg in the OIL if the mroute is not supposed to | |
319 | * trigger register encapsulated data | |
320 | */ | |
321 | if (PIM_UPSTREAM_FLAG_TEST_NO_PIMREG_DATA(c_oil->up->flags)) | |
322 | do_mute = true; | |
323 | ||
324 | return do_mute; | |
325 | } | |
326 | ||
327 | vxlan_ifp = pim_vxlan_get_term_ifp(pim); | |
328 | if (pim_ifp == vxlan_ifp) { | |
329 | /* 1. vxlan termination device must never be added to the | |
330 | * origination mroute (and that can actually happen because | |
331 | * of XG inheritance from the termination mroute) otherwise | |
332 | * traffic will end up looping. | |
333 | * PS: This check has also been extended to non-orig mroutes | |
334 | * that have a local SIP as such mroutes can move back and | |
335 | * forth between orig<=>non-orig type. | |
336 | * 2. vxlan termination device should be removed from the non-DF | |
337 | * to prevent duplicates to the overlay rxer | |
338 | */ | |
339 | if (PIM_UPSTREAM_FLAG_TEST_SRC_VXLAN_ORIG(c_oil->up->flags) || | |
340 | PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(c_oil->up->flags) || | |
341 | pim_vxlan_is_local_sip(c_oil->up)) | |
342 | do_mute = true; | |
343 | ||
344 | return do_mute; | |
345 | } | |
346 | ||
347 | if (PIM_I_am_DualActive(pim_ifp)) { | |
348 | struct pim_upstream *starup = c_oil->up->parent; | |
349 | if (PIM_UPSTREAM_FLAG_TEST_MLAG_INTERFACE(c_oil->up->flags) | |
350 | && (PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(c_oil->up->flags))) | |
351 | do_mute = true; | |
352 | ||
353 | /* In case entry is (S,G), Negotiation happens at (*.G) */ | |
354 | if (starup | |
355 | ||
356 | && PIM_UPSTREAM_FLAG_TEST_MLAG_INTERFACE(starup->flags) | |
357 | && (PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(starup->flags))) | |
358 | do_mute = true; | |
359 | return do_mute; | |
360 | } | |
361 | return do_mute; | |
362 | } | |
363 | ||
364 | void pim_channel_update_oif_mute(struct channel_oil *c_oil, | |
365 | struct pim_interface *pim_ifp) | |
366 | { | |
367 | bool old_mute; | |
368 | bool new_mute; | |
369 | ||
370 | /* If pim_ifp is not a part of the OIL there is nothing to do */ | |
371 | if (!oil_if_has(c_oil, pim_ifp->mroute_vif_index)) | |
372 | return; | |
373 | ||
374 | old_mute = !!(c_oil->oif_flags[pim_ifp->mroute_vif_index] & | |
375 | PIM_OIF_FLAG_MUTE); | |
376 | new_mute = pim_channel_eval_oif_mute(c_oil, pim_ifp); | |
377 | if (old_mute == new_mute) | |
378 | return; | |
379 | ||
380 | if (new_mute) | |
381 | c_oil->oif_flags[pim_ifp->mroute_vif_index] |= | |
382 | PIM_OIF_FLAG_MUTE; | |
383 | else | |
384 | c_oil->oif_flags[pim_ifp->mroute_vif_index] &= | |
385 | ~PIM_OIF_FLAG_MUTE; | |
386 | ||
387 | pim_upstream_mroute_add(c_oil, __func__); | |
388 | } | |
389 | ||
390 | /* pim_upstream has been set or cleared on the c_oil. re-eval mute state | |
391 | * on all existing OIFs | |
392 | */ | |
393 | static void pim_channel_update_mute(struct channel_oil *c_oil) | |
394 | { | |
395 | struct pim_interface *pim_reg_ifp; | |
396 | struct pim_interface *vxlan_ifp; | |
397 | ||
398 | if (c_oil->pim->regiface) { | |
399 | pim_reg_ifp = c_oil->pim->regiface->info; | |
400 | if (pim_reg_ifp) | |
401 | pim_channel_update_oif_mute(c_oil, pim_reg_ifp); | |
402 | } | |
403 | vxlan_ifp = pim_vxlan_get_term_ifp(c_oil->pim); | |
404 | if (vxlan_ifp) | |
405 | pim_channel_update_oif_mute(c_oil, vxlan_ifp); | |
406 | } | |
407 | ||
408 | int pim_channel_add_oif(struct channel_oil *channel_oil, struct interface *oif, | |
409 | uint32_t proto_mask, const char *caller) | |
410 | { | |
411 | struct pim_interface *pim_ifp; | |
412 | int old_ttl; | |
413 | ||
414 | /* | |
415 | * If we've gotten here we've gone bad, but let's | |
416 | * not take down pim | |
417 | */ | |
418 | if (!channel_oil) { | |
419 | zlog_warn("Attempt to Add OIF for non-existent channel oil"); | |
420 | return -1; | |
421 | } | |
422 | ||
423 | pim_ifp = oif->info; | |
424 | ||
425 | assertf(pim_ifp->mroute_vif_index >= 0, | |
426 | "trying to add OIF %s with VIF (%d)", oif->name, | |
427 | pim_ifp->mroute_vif_index); | |
428 | ||
429 | /* Prevent single protocol from subscribing same interface to | |
430 | channel (S,G) multiple times */ | |
431 | if (channel_oil->oif_flags[pim_ifp->mroute_vif_index] & proto_mask) { | |
432 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] |= proto_mask; | |
433 | ||
434 | if (PIM_DEBUG_MROUTE) { | |
435 | zlog_debug( | |
436 | "%s %s: existing protocol mask %u requested OIF %s (vif_index=%d, min_ttl=%d) for channel (S,G)=(%pPAs,%pPAs)", | |
437 | __FILE__, __func__, proto_mask, oif->name, | |
438 | pim_ifp->mroute_vif_index, | |
439 | oil_if_has(channel_oil, pim_ifp->mroute_vif_index), | |
440 | oil_origin(channel_oil), | |
441 | oil_mcastgrp(channel_oil)); | |
442 | } | |
443 | return -3; | |
444 | } | |
445 | ||
446 | /* Allow other protocol to request subscription of same interface to | |
447 | * channel (S,G), we need to note this information | |
448 | */ | |
449 | if (channel_oil->oif_flags[pim_ifp->mroute_vif_index] | |
450 | & PIM_OIF_FLAG_PROTO_ANY) { | |
451 | ||
452 | /* Updating time here is not required as this time has to | |
453 | * indicate when the interface is added | |
454 | */ | |
455 | ||
456 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] |= proto_mask; | |
457 | /* Check the OIF really exists before returning, and only log | |
458 | warning otherwise */ | |
459 | if (oil_if_has(channel_oil, pim_ifp->mroute_vif_index) < 1) { | |
460 | zlog_warn( | |
461 | "%s %s: new protocol mask %u requested nonexistent OIF %s (vif_index=%d, min_ttl=%d) for channel (S,G)=(%pPAs,%pPAs)", | |
462 | __FILE__, __func__, proto_mask, oif->name, | |
463 | pim_ifp->mroute_vif_index, | |
464 | oil_if_has(channel_oil, pim_ifp->mroute_vif_index), | |
465 | oil_origin(channel_oil), | |
466 | oil_mcastgrp(channel_oil)); | |
467 | } | |
468 | ||
469 | if (PIM_DEBUG_MROUTE) { | |
470 | zlog_debug( | |
471 | "%s(%s): (S,G)=(%pPAs,%pPAs): proto_mask=%u OIF=%s vif_index=%d added to 0x%x", | |
472 | __func__, caller, oil_origin(channel_oil), | |
473 | oil_mcastgrp(channel_oil), | |
474 | proto_mask, oif->name, | |
475 | pim_ifp->mroute_vif_index, | |
476 | channel_oil | |
477 | ->oif_flags[pim_ifp->mroute_vif_index]); | |
478 | } | |
479 | return 0; | |
480 | } | |
481 | ||
482 | old_ttl = oil_if_has(channel_oil, pim_ifp->mroute_vif_index); | |
483 | ||
484 | if (old_ttl > 0) { | |
485 | if (PIM_DEBUG_MROUTE) { | |
486 | zlog_debug( | |
487 | "%s %s: interface %s (vif_index=%d) is existing output for channel (S,G)=(%pPAs,%pPAs)", | |
488 | __FILE__, __func__, oif->name, | |
489 | pim_ifp->mroute_vif_index, | |
490 | oil_origin(channel_oil), | |
491 | oil_mcastgrp(channel_oil)); | |
492 | } | |
493 | return -4; | |
494 | } | |
495 | ||
496 | oil_if_set(channel_oil, pim_ifp->mroute_vif_index, PIM_MROUTE_MIN_TTL); | |
497 | ||
498 | /* Some OIFs are held in a muted state i.e. the PIM state machine | |
499 | * decided to include the OIF but additional status check such as | |
500 | * MLAG DF role prevent it from being activated for traffic | |
501 | * forwarding. | |
502 | */ | |
503 | if (pim_channel_eval_oif_mute(channel_oil, pim_ifp)) | |
504 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] |= | |
505 | PIM_OIF_FLAG_MUTE; | |
506 | else | |
507 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] &= | |
508 | ~PIM_OIF_FLAG_MUTE; | |
509 | ||
510 | /* channel_oil->oil.mfcc_parent != MAXVIFS indicate this entry is not | |
511 | * valid to get installed in kernel. | |
512 | */ | |
513 | if (*oil_parent(channel_oil) != MAXVIFS) { | |
514 | if (pim_upstream_mroute_add(channel_oil, __func__)) { | |
515 | if (PIM_DEBUG_MROUTE) { | |
516 | zlog_debug( | |
517 | "%s %s: could not add output interface %s (vif_index=%d) for channel (S,G)=(%pPAs,%pPAs)", | |
518 | __FILE__, __func__, oif->name, | |
519 | pim_ifp->mroute_vif_index, | |
520 | oil_origin(channel_oil), | |
521 | oil_mcastgrp(channel_oil)); | |
522 | } | |
523 | ||
524 | oil_if_set(channel_oil, pim_ifp->mroute_vif_index, | |
525 | old_ttl); | |
526 | return -5; | |
527 | } | |
528 | } | |
529 | ||
530 | channel_oil->oif_creation[pim_ifp->mroute_vif_index] = | |
531 | pim_time_monotonic_sec(); | |
532 | ++channel_oil->oil_size; | |
533 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] |= proto_mask; | |
534 | ||
535 | if (PIM_DEBUG_MROUTE) { | |
536 | zlog_debug( | |
537 | "%s(%s): (S,G)=(%pPAs,%pPAs): proto_mask=%u OIF=%s vif_index=%d: DONE", | |
538 | __func__, caller, oil_origin(channel_oil), | |
539 | oil_mcastgrp(channel_oil), | |
540 | proto_mask, | |
541 | oif->name, pim_ifp->mroute_vif_index); | |
542 | } | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
547 | int pim_channel_oil_empty(struct channel_oil *c_oil) | |
548 | { | |
549 | static struct channel_oil null_oil; | |
550 | ||
551 | if (!c_oil) | |
552 | return 1; | |
553 | ||
554 | /* exclude pimreg from the OIL when checking if the inherited_oil is | |
555 | * non-NULL. | |
556 | * pimreg device (in all vrfs) uses a vifi of | |
557 | * 0 (PIM_OIF_PIM_REGISTER_VIF) so we simply mfcc_ttls[0] */ | |
558 | if (oil_if_has(c_oil, 0)) | |
559 | oil_if_set(&null_oil, 0, 1); | |
560 | else | |
561 | oil_if_set(&null_oil, 0, 0); | |
562 | ||
563 | return !oil_if_cmp(&c_oil->oil, &null_oil.oil); | |
564 | } |