]>
Commit | Line | Data |
---|---|---|
acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
12e41d03 | 2 | /* |
896014f4 DL |
3 | * PIM for Quagga |
4 | * Copyright (C) 2008 Everton da Silva Marques | |
896014f4 | 5 | */ |
12e41d03 DL |
6 | |
7 | #include <zebra.h> | |
8 | ||
9 | #include "log.h" | |
10 | #include "memory.h" | |
11 | #include "linklist.h" | |
744d91b3 | 12 | #include "if.h" |
040d86ad DS |
13 | #include "hash.h" |
14 | #include "jhash.h" | |
12e41d03 DL |
15 | |
16 | #include "pimd.h" | |
17 | #include "pim_oil.h" | |
18 | #include "pim_str.h" | |
19 | #include "pim_iface.h" | |
37653d4f | 20 | #include "pim_time.h" |
5923b739 | 21 | #include "pim_vxlan.h" |
12e41d03 | 22 | |
a155fed5 AK |
23 | static void pim_channel_update_mute(struct channel_oil *c_oil); |
24 | ||
d62a17ae | 25 | char *pim_channel_oil_dump(struct channel_oil *c_oil, char *buf, size_t size) |
781a1745 | 26 | { |
a2dc7057 | 27 | char *out; |
9bf5f19c | 28 | struct interface *ifp; |
6fff2cc6 | 29 | pim_sgaddr sg; |
d62a17ae | 30 | int i; |
31 | ||
a9338fa4 DL |
32 | sg.src = *oil_origin(c_oil); |
33 | sg.grp = *oil_mcastgrp(c_oil); | |
34 | ifp = pim_if_find_by_vif_index(c_oil->pim, *oil_parent(c_oil)); | |
98a81d2b DL |
35 | snprintfrr(buf, size, "%pSG IIF: %s, OIFS: ", &sg, |
36 | ifp ? ifp->name : "(?)"); | |
d62a17ae | 37 | |
a2dc7057 | 38 | out = buf + strlen(buf); |
d62a17ae | 39 | for (i = 0; i < MAXVIFS; i++) { |
a9338fa4 | 40 | if (oil_if_has(c_oil, i) != 0) { |
9bf5f19c DS |
41 | ifp = pim_if_find_by_vif_index(c_oil->pim, i); |
42 | snprintf(out, buf + size - out, "%s ", | |
43 | ifp ? ifp->name : "(?)"); | |
a2dc7057 | 44 | out += strlen(out); |
d62a17ae | 45 | } |
46 | } | |
47 | ||
48 | return buf; | |
781a1745 DS |
49 | } |
50 | ||
a9338fa4 DL |
51 | int pim_channel_oil_compare(const struct channel_oil *cc1, |
52 | const struct channel_oil *cc2) | |
040d86ad | 53 | { |
a9338fa4 DL |
54 | struct channel_oil *c1 = (struct channel_oil *)cc1; |
55 | struct channel_oil *c2 = (struct channel_oil *)cc2; | |
56 | int rv; | |
57 | ||
58 | rv = pim_addr_cmp(*oil_mcastgrp(c1), *oil_mcastgrp(c2)); | |
59 | if (rv) | |
60 | return rv; | |
61 | rv = pim_addr_cmp(*oil_origin(c1), *oil_origin(c2)); | |
62 | if (rv) | |
63 | return rv; | |
d62a17ae | 64 | return 0; |
040d86ad DS |
65 | } |
66 | ||
611925dc | 67 | void pim_oil_init(struct pim_instance *pim) |
040d86ad | 68 | { |
7315ecda | 69 | rb_pim_oil_init(&pim->channel_oil_head); |
040d86ad DS |
70 | } |
71 | ||
611925dc | 72 | void pim_oil_terminate(struct pim_instance *pim) |
040d86ad | 73 | { |
7315ecda DS |
74 | struct channel_oil *c_oil; |
75 | ||
76 | while ((c_oil = rb_pim_oil_pop(&pim->channel_oil_head))) | |
77 | pim_channel_oil_free(c_oil); | |
040d86ad | 78 | |
7315ecda | 79 | rb_pim_oil_fini(&pim->channel_oil_head); |
040d86ad DS |
80 | } |
81 | ||
12e41d03 DL |
82 | void pim_channel_oil_free(struct channel_oil *c_oil) |
83 | { | |
d62a17ae | 84 | XFREE(MTYPE_PIM_CHANNEL_OIL, c_oil); |
12e41d03 DL |
85 | } |
86 | ||
4d9ad5dc | 87 | struct channel_oil *pim_find_channel_oil(struct pim_instance *pim, |
6fff2cc6 | 88 | pim_sgaddr *sg) |
12e41d03 | 89 | { |
d62a17ae | 90 | struct channel_oil *c_oil = NULL; |
91 | struct channel_oil lookup; | |
d270b216 | 92 | |
a9338fa4 DL |
93 | *oil_mcastgrp(&lookup) = sg->grp; |
94 | *oil_origin(&lookup) = sg->src; | |
d270b216 | 95 | |
7315ecda | 96 | c_oil = rb_pim_oil_find(&pim->channel_oil_head, &lookup); |
d270b216 | 97 | |
d62a17ae | 98 | return c_oil; |
12e41d03 DL |
99 | } |
100 | ||
611925dc | 101 | struct channel_oil *pim_channel_oil_add(struct pim_instance *pim, |
6fff2cc6 | 102 | pim_sgaddr *sg, const char *name) |
12e41d03 | 103 | { |
d62a17ae | 104 | struct channel_oil *c_oil; |
d62a17ae | 105 | |
611925dc | 106 | c_oil = pim_find_channel_oil(pim, sg); |
d62a17ae | 107 | if (c_oil) { |
d62a17ae | 108 | ++c_oil->oil_ref_count; |
a155fed5 AK |
109 | |
110 | if (!c_oil->up) { | |
111 | /* channel might be present prior to upstream */ | |
112 | c_oil->up = pim_upstream_find( | |
113 | pim, sg); | |
114 | /* if the upstream entry is being anchored to an | |
115 | * already existing channel OIL we need to re-evaluate | |
116 | * the "Mute" state on AA OIFs | |
117 | */ | |
118 | pim_channel_update_mute(c_oil); | |
119 | } | |
8a3e7e9e | 120 | |
7984af18 AK |
121 | /* check if the IIF has changed |
122 | * XXX - is this really needed | |
123 | */ | |
124 | pim_upstream_mroute_iif_update(c_oil, __func__); | |
125 | ||
8a3e7e9e DS |
126 | if (PIM_DEBUG_MROUTE) |
127 | zlog_debug( | |
6fff2cc6 | 128 | "%s(%s): Existing oil for %pSG Ref Count: %d (Post Increment)", |
15569c58 | 129 | __func__, name, sg, c_oil->oil_ref_count); |
d62a17ae | 130 | return c_oil; |
131 | } | |
132 | ||
d62a17ae | 133 | c_oil = XCALLOC(MTYPE_PIM_CHANNEL_OIL, sizeof(*c_oil)); |
d62a17ae | 134 | |
a9338fa4 DL |
135 | *oil_mcastgrp(c_oil) = sg->grp; |
136 | *oil_origin(c_oil) = sg->src; | |
d62a17ae | 137 | |
a9338fa4 | 138 | *oil_parent(c_oil) = MAXVIFS; |
d62a17ae | 139 | c_oil->oil_ref_count = 1; |
140 | c_oil->installed = 0; | |
611925dc DS |
141 | c_oil->up = pim_upstream_find(pim, sg); |
142 | c_oil->pim = pim; | |
d62a17ae | 143 | |
7315ecda | 144 | rb_pim_oil_add(&pim->channel_oil_head, c_oil); |
d62a17ae | 145 | |
8a3e7e9e | 146 | if (PIM_DEBUG_MROUTE) |
98a81d2b | 147 | zlog_debug("%s(%s): c_oil %pSG add", __func__, name, sg); |
7984af18 | 148 | |
d62a17ae | 149 | return c_oil; |
12e41d03 DL |
150 | } |
151 | ||
1c883aef SG |
152 | |
153 | /* | |
154 | * Clean up mroute and channel oil created for dropping pkts from directly | |
155 | * connected source when the interface was non DR. | |
156 | */ | |
157 | void pim_clear_nocache_state(struct pim_interface *pim_ifp) | |
158 | { | |
159 | struct channel_oil *c_oil; | |
160 | ||
161 | frr_each_safe (rb_pim_oil, &pim_ifp->pim->channel_oil_head, c_oil) { | |
162 | ||
163 | if ((!c_oil->up) || | |
164 | !(PIM_UPSTREAM_FLAG_TEST_SRC_NOCACHE(c_oil->up->flags))) | |
165 | continue; | |
166 | ||
167 | if (*oil_parent(c_oil) != pim_ifp->mroute_vif_index) | |
168 | continue; | |
169 | ||
42f5ab16 | 170 | EVENT_OFF(c_oil->up->t_ka_timer); |
1c883aef SG |
171 | PIM_UPSTREAM_FLAG_UNSET_SRC_NOCACHE(c_oil->up->flags); |
172 | PIM_UPSTREAM_FLAG_UNSET_SRC_STREAM(c_oil->up->flags); | |
173 | pim_upstream_del(pim_ifp->pim, c_oil->up, __func__); | |
174 | } | |
175 | } | |
176 | ||
a155fed5 | 177 | struct channel_oil *pim_channel_oil_del(struct channel_oil *c_oil, |
17823cdd | 178 | const char *name) |
12e41d03 | 179 | { |
8a3e7e9e | 180 | if (PIM_DEBUG_MROUTE) { |
a5a221bf SP |
181 | pim_sgaddr sg = {.src = *oil_origin(c_oil), |
182 | .grp = *oil_mcastgrp(c_oil)}; | |
8a3e7e9e DS |
183 | |
184 | zlog_debug( | |
6fff2cc6 | 185 | "%s(%s): Del oil for %pSG, Ref Count: %d (Predecrement)", |
15569c58 | 186 | __func__, name, &sg, c_oil->oil_ref_count); |
8a3e7e9e | 187 | } |
d62a17ae | 188 | --c_oil->oil_ref_count; |
189 | ||
190 | if (c_oil->oil_ref_count < 1) { | |
191 | /* | |
192 | * notice that listnode_delete() can't be moved | |
193 | * into pim_channel_oil_free() because the later is | |
194 | * called by list_delete_all_node() | |
195 | */ | |
196 | c_oil->up = NULL; | |
7315ecda | 197 | rb_pim_oil_del(&c_oil->pim->channel_oil_head, c_oil); |
d62a17ae | 198 | |
199 | pim_channel_oil_free(c_oil); | |
a155fed5 AK |
200 | return NULL; |
201 | } | |
202 | ||
203 | return c_oil; | |
204 | } | |
205 | ||
206 | void pim_channel_oil_upstream_deref(struct channel_oil *c_oil) | |
207 | { | |
208 | /* The upstream entry associated with a channel_oil is abt to be | |
209 | * deleted. If the channel_oil is kept around because of other | |
210 | * references we need to remove upstream based states out of it. | |
211 | */ | |
212 | c_oil = pim_channel_oil_del(c_oil, __func__); | |
213 | if (c_oil) { | |
214 | /* note: here we assume that c_oil->up has already been | |
215 | * cleared | |
216 | */ | |
217 | pim_channel_update_mute(c_oil); | |
d62a17ae | 218 | } |
12e41d03 | 219 | } |
1865a44a | 220 | |
d62a17ae | 221 | int pim_channel_del_oif(struct channel_oil *channel_oil, struct interface *oif, |
1b249e70 | 222 | uint32_t proto_mask, const char *caller) |
887fa014 | 223 | { |
d62a17ae | 224 | struct pim_interface *pim_ifp; |
225 | ||
df5dfb77 DL |
226 | assert(channel_oil); |
227 | assert(oif); | |
d62a17ae | 228 | |
229 | pim_ifp = oif->info; | |
230 | ||
d6890c49 DL |
231 | assertf(pim_ifp->mroute_vif_index >= 0, |
232 | "trying to del OIF %s with VIF (%d)", oif->name, | |
233 | pim_ifp->mroute_vif_index); | |
234 | ||
d62a17ae | 235 | /* |
236 | * Don't do anything if we've been asked to remove a source | |
237 | * that is not actually on it. | |
238 | */ | |
239 | if (!(channel_oil->oif_flags[pim_ifp->mroute_vif_index] & proto_mask)) { | |
240 | if (PIM_DEBUG_MROUTE) { | |
d62a17ae | 241 | zlog_debug( |
a9338fa4 | 242 | "%s %s: no existing protocol mask %u(%u) for requested OIF %s (vif_index=%d, min_ttl=%d) for channel (S,G)=(%pPAs,%pPAs)", |
15569c58 | 243 | __FILE__, __func__, proto_mask, |
d62a17ae | 244 | channel_oil |
245 | ->oif_flags[pim_ifp->mroute_vif_index], | |
246 | oif->name, pim_ifp->mroute_vif_index, | |
a9338fa4 DL |
247 | oil_if_has(channel_oil, pim_ifp->mroute_vif_index), |
248 | oil_origin(channel_oil), | |
249 | oil_mcastgrp(channel_oil)); | |
d62a17ae | 250 | } |
251 | return 0; | |
252 | } | |
253 | ||
254 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] &= ~proto_mask; | |
255 | ||
5923b739 AK |
256 | if (channel_oil->oif_flags[pim_ifp->mroute_vif_index] & |
257 | PIM_OIF_FLAG_PROTO_ANY) { | |
d62a17ae | 258 | if (PIM_DEBUG_MROUTE) { |
d62a17ae | 259 | zlog_debug( |
a9338fa4 | 260 | "%s %s: other protocol masks remain for requested OIF %s (vif_index=%d, min_ttl=%d) for channel (S,G)=(%pPAs,%pPAs)", |
15569c58 | 261 | __FILE__, __func__, oif->name, |
d62a17ae | 262 | pim_ifp->mroute_vif_index, |
a9338fa4 DL |
263 | oil_if_has(channel_oil, pim_ifp->mroute_vif_index), |
264 | oil_origin(channel_oil), | |
265 | oil_mcastgrp(channel_oil)); | |
d62a17ae | 266 | } |
267 | return 0; | |
268 | } | |
269 | ||
aa0bb312 | 270 | oil_if_set(channel_oil, pim_ifp->mroute_vif_index, 0); |
5923b739 AK |
271 | /* clear mute; will be re-evaluated when the OIF becomes valid again */ |
272 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] &= ~PIM_OIF_FLAG_MUTE; | |
d62a17ae | 273 | |
15569c58 | 274 | if (pim_upstream_mroute_add(channel_oil, __func__)) { |
d62a17ae | 275 | if (PIM_DEBUG_MROUTE) { |
d62a17ae | 276 | zlog_debug( |
a9338fa4 | 277 | "%s %s: could not remove output interface %s (vif_index=%d) for channel (S,G)=(%pPAs,%pPAs)", |
15569c58 | 278 | __FILE__, __func__, oif->name, |
a9338fa4 DL |
279 | pim_ifp->mroute_vif_index, |
280 | oil_origin(channel_oil), | |
281 | oil_mcastgrp(channel_oil)); | |
d62a17ae | 282 | } |
283 | return -1; | |
887fa014 | 284 | } |
d62a17ae | 285 | |
286 | --channel_oil->oil_size; | |
287 | ||
288 | if (PIM_DEBUG_MROUTE) { | |
d62a17ae | 289 | zlog_debug( |
a9338fa4 DL |
290 | "%s(%s): (S,G)=(%pPAs,%pPAs): proto_mask=%u IIF:%d OIF=%s vif_index=%d", |
291 | __func__, caller, oil_origin(channel_oil), | |
292 | oil_mcastgrp(channel_oil), | |
293 | proto_mask, | |
294 | *oil_parent(channel_oil), oif->name, | |
d62a17ae | 295 | pim_ifp->mroute_vif_index); |
887fa014 | 296 | } |
d62a17ae | 297 | |
298 | return 0; | |
887fa014 DS |
299 | } |
300 | ||
1537a668 AK |
301 | void pim_channel_del_inherited_oif(struct channel_oil *c_oil, |
302 | struct interface *oif, const char *caller) | |
303 | { | |
304 | struct pim_upstream *up = c_oil->up; | |
305 | ||
306 | pim_channel_del_oif(c_oil, oif, PIM_OIF_FLAG_PROTO_STAR, | |
307 | caller); | |
308 | ||
309 | /* if an inherited OIF is being removed join-desired can change | |
310 | * if the inherited OIL is now empty and KAT is running | |
311 | */ | |
2a27f13b DL |
312 | if (up && !pim_addr_is_any(up->sg.src) && |
313 | pim_upstream_empty_inherited_olist(up)) | |
1537a668 AK |
314 | pim_upstream_update_join_desired(up->pim, up); |
315 | } | |
887fa014 | 316 | |
5923b739 AK |
317 | static bool pim_channel_eval_oif_mute(struct channel_oil *c_oil, |
318 | struct pim_interface *pim_ifp) | |
319 | { | |
320 | struct pim_interface *pim_reg_ifp; | |
321 | struct pim_interface *vxlan_ifp; | |
322 | bool do_mute = false; | |
323 | struct pim_instance *pim = c_oil->pim; | |
324 | ||
325 | if (!c_oil->up) | |
326 | return do_mute; | |
327 | ||
328 | pim_reg_ifp = pim->regiface->info; | |
329 | if (pim_ifp == pim_reg_ifp) { | |
330 | /* suppress pimreg in the OIL if the mroute is not supposed to | |
331 | * trigger register encapsulated data | |
332 | */ | |
333 | if (PIM_UPSTREAM_FLAG_TEST_NO_PIMREG_DATA(c_oil->up->flags)) | |
334 | do_mute = true; | |
335 | ||
336 | return do_mute; | |
337 | } | |
338 | ||
339 | vxlan_ifp = pim_vxlan_get_term_ifp(pim); | |
340 | if (pim_ifp == vxlan_ifp) { | |
341 | /* 1. vxlan termination device must never be added to the | |
342 | * origination mroute (and that can actually happen because | |
343 | * of XG inheritance from the termination mroute) otherwise | |
344 | * traffic will end up looping. | |
345 | * PS: This check has also been extended to non-orig mroutes | |
346 | * that have a local SIP as such mroutes can move back and | |
347 | * forth between orig<=>non-orig type. | |
348 | * 2. vxlan termination device should be removed from the non-DF | |
349 | * to prevent duplicates to the overlay rxer | |
350 | */ | |
351 | if (PIM_UPSTREAM_FLAG_TEST_SRC_VXLAN_ORIG(c_oil->up->flags) || | |
352 | PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(c_oil->up->flags) || | |
353 | pim_vxlan_is_local_sip(c_oil->up)) | |
354 | do_mute = true; | |
355 | ||
356 | return do_mute; | |
357 | } | |
358 | ||
df94b33a DS |
359 | if (PIM_I_am_DualActive(pim_ifp)) { |
360 | struct pim_upstream *starup = c_oil->up->parent; | |
361 | if (PIM_UPSTREAM_FLAG_TEST_MLAG_INTERFACE(c_oil->up->flags) | |
362 | && (PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(c_oil->up->flags))) | |
363 | do_mute = true; | |
364 | ||
365 | /* In case entry is (S,G), Negotiation happens at (*.G) */ | |
366 | if (starup | |
367 | ||
368 | && PIM_UPSTREAM_FLAG_TEST_MLAG_INTERFACE(starup->flags) | |
369 | && (PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(starup->flags))) | |
370 | do_mute = true; | |
371 | return do_mute; | |
372 | } | |
5923b739 AK |
373 | return do_mute; |
374 | } | |
375 | ||
376 | void pim_channel_update_oif_mute(struct channel_oil *c_oil, | |
377 | struct pim_interface *pim_ifp) | |
378 | { | |
379 | bool old_mute; | |
380 | bool new_mute; | |
381 | ||
382 | /* If pim_ifp is not a part of the OIL there is nothing to do */ | |
a9338fa4 | 383 | if (!oil_if_has(c_oil, pim_ifp->mroute_vif_index)) |
5923b739 AK |
384 | return; |
385 | ||
386 | old_mute = !!(c_oil->oif_flags[pim_ifp->mroute_vif_index] & | |
387 | PIM_OIF_FLAG_MUTE); | |
388 | new_mute = pim_channel_eval_oif_mute(c_oil, pim_ifp); | |
389 | if (old_mute == new_mute) | |
390 | return; | |
391 | ||
392 | if (new_mute) | |
393 | c_oil->oif_flags[pim_ifp->mroute_vif_index] |= | |
394 | PIM_OIF_FLAG_MUTE; | |
395 | else | |
396 | c_oil->oif_flags[pim_ifp->mroute_vif_index] &= | |
397 | ~PIM_OIF_FLAG_MUTE; | |
398 | ||
15569c58 | 399 | pim_upstream_mroute_add(c_oil, __func__); |
5923b739 AK |
400 | } |
401 | ||
a155fed5 AK |
402 | /* pim_upstream has been set or cleared on the c_oil. re-eval mute state |
403 | * on all existing OIFs | |
404 | */ | |
405 | static void pim_channel_update_mute(struct channel_oil *c_oil) | |
406 | { | |
407 | struct pim_interface *pim_reg_ifp; | |
408 | struct pim_interface *vxlan_ifp; | |
409 | ||
8c70a46b DS |
410 | if (c_oil->pim->regiface) { |
411 | pim_reg_ifp = c_oil->pim->regiface->info; | |
412 | if (pim_reg_ifp) | |
413 | pim_channel_update_oif_mute(c_oil, pim_reg_ifp); | |
414 | } | |
a155fed5 AK |
415 | vxlan_ifp = pim_vxlan_get_term_ifp(c_oil->pim); |
416 | if (vxlan_ifp) | |
417 | pim_channel_update_oif_mute(c_oil, vxlan_ifp); | |
418 | } | |
419 | ||
d62a17ae | 420 | int pim_channel_add_oif(struct channel_oil *channel_oil, struct interface *oif, |
1b249e70 | 421 | uint32_t proto_mask, const char *caller) |
1865a44a | 422 | { |
d62a17ae | 423 | struct pim_interface *pim_ifp; |
424 | int old_ttl; | |
425 | ||
426 | /* | |
427 | * If we've gotten here we've gone bad, but let's | |
428 | * not take down pim | |
429 | */ | |
430 | if (!channel_oil) { | |
431 | zlog_warn("Attempt to Add OIF for non-existent channel oil"); | |
432 | return -1; | |
433 | } | |
1865a44a | 434 | |
d62a17ae | 435 | pim_ifp = oif->info; |
1865a44a | 436 | |
d6890c49 DL |
437 | assertf(pim_ifp->mroute_vif_index >= 0, |
438 | "trying to add OIF %s with VIF (%d)", oif->name, | |
439 | pim_ifp->mroute_vif_index); | |
440 | ||
d62a17ae | 441 | /* Prevent single protocol from subscribing same interface to |
442 | channel (S,G) multiple times */ | |
443 | if (channel_oil->oif_flags[pim_ifp->mroute_vif_index] & proto_mask) { | |
692b1186 MR |
444 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] |= proto_mask; |
445 | ||
d62a17ae | 446 | if (PIM_DEBUG_MROUTE) { |
d62a17ae | 447 | zlog_debug( |
a9338fa4 | 448 | "%s %s: existing protocol mask %u requested OIF %s (vif_index=%d, min_ttl=%d) for channel (S,G)=(%pPAs,%pPAs)", |
15569c58 DA |
449 | __FILE__, __func__, proto_mask, oif->name, |
450 | pim_ifp->mroute_vif_index, | |
a9338fa4 DL |
451 | oil_if_has(channel_oil, pim_ifp->mroute_vif_index), |
452 | oil_origin(channel_oil), | |
453 | oil_mcastgrp(channel_oil)); | |
d62a17ae | 454 | } |
455 | return -3; | |
456 | } | |
457 | ||
458 | /* Allow other protocol to request subscription of same interface to | |
459 | * channel (S,G), we need to note this information | |
460 | */ | |
461 | if (channel_oil->oif_flags[pim_ifp->mroute_vif_index] | |
462 | & PIM_OIF_FLAG_PROTO_ANY) { | |
463 | ||
d23756e9 SP |
464 | /* Updating time here is not required as this time has to |
465 | * indicate when the interface is added | |
466 | */ | |
467 | ||
d62a17ae | 468 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] |= proto_mask; |
469 | /* Check the OIF really exists before returning, and only log | |
470 | warning otherwise */ | |
a9338fa4 | 471 | if (oil_if_has(channel_oil, pim_ifp->mroute_vif_index) < 1) { |
dd4a4b56 | 472 | zlog_warn( |
a9338fa4 | 473 | "%s %s: new protocol mask %u requested nonexistent OIF %s (vif_index=%d, min_ttl=%d) for channel (S,G)=(%pPAs,%pPAs)", |
dd4a4b56 DS |
474 | __FILE__, __func__, proto_mask, oif->name, |
475 | pim_ifp->mroute_vif_index, | |
a9338fa4 DL |
476 | oil_if_has(channel_oil, pim_ifp->mroute_vif_index), |
477 | oil_origin(channel_oil), | |
478 | oil_mcastgrp(channel_oil)); | |
d62a17ae | 479 | } |
480 | ||
b900ad16 | 481 | if (PIM_DEBUG_MROUTE) { |
b900ad16 | 482 | zlog_debug( |
a9338fa4 DL |
483 | "%s(%s): (S,G)=(%pPAs,%pPAs): proto_mask=%u OIF=%s vif_index=%d added to 0x%x", |
484 | __func__, caller, oil_origin(channel_oil), | |
485 | oil_mcastgrp(channel_oil), | |
b900ad16 AK |
486 | proto_mask, oif->name, |
487 | pim_ifp->mroute_vif_index, | |
488 | channel_oil | |
489 | ->oif_flags[pim_ifp->mroute_vif_index]); | |
490 | } | |
d62a17ae | 491 | return 0; |
492 | } | |
493 | ||
a9338fa4 | 494 | old_ttl = oil_if_has(channel_oil, pim_ifp->mroute_vif_index); |
d62a17ae | 495 | |
496 | if (old_ttl > 0) { | |
497 | if (PIM_DEBUG_MROUTE) { | |
d62a17ae | 498 | zlog_debug( |
a9338fa4 | 499 | "%s %s: interface %s (vif_index=%d) is existing output for channel (S,G)=(%pPAs,%pPAs)", |
15569c58 | 500 | __FILE__, __func__, oif->name, |
a9338fa4 DL |
501 | pim_ifp->mroute_vif_index, |
502 | oil_origin(channel_oil), | |
503 | oil_mcastgrp(channel_oil)); | |
d62a17ae | 504 | } |
505 | return -4; | |
506 | } | |
507 | ||
a9338fa4 | 508 | oil_if_set(channel_oil, pim_ifp->mroute_vif_index, PIM_MROUTE_MIN_TTL); |
d62a17ae | 509 | |
5923b739 AK |
510 | /* Some OIFs are held in a muted state i.e. the PIM state machine |
511 | * decided to include the OIF but additional status check such as | |
512 | * MLAG DF role prevent it from being activated for traffic | |
513 | * forwarding. | |
514 | */ | |
515 | if (pim_channel_eval_oif_mute(channel_oil, pim_ifp)) | |
516 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] |= | |
517 | PIM_OIF_FLAG_MUTE; | |
518 | else | |
519 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] &= | |
520 | ~PIM_OIF_FLAG_MUTE; | |
521 | ||
47e3ce59 SP |
522 | /* channel_oil->oil.mfcc_parent != MAXVIFS indicate this entry is not |
523 | * valid to get installed in kernel. | |
c3156184 | 524 | */ |
a9338fa4 | 525 | if (*oil_parent(channel_oil) != MAXVIFS) { |
15569c58 | 526 | if (pim_upstream_mroute_add(channel_oil, __func__)) { |
c3156184 | 527 | if (PIM_DEBUG_MROUTE) { |
c3156184 | 528 | zlog_debug( |
a9338fa4 | 529 | "%s %s: could not add output interface %s (vif_index=%d) for channel (S,G)=(%pPAs,%pPAs)", |
15569c58 | 530 | __FILE__, __func__, oif->name, |
a9338fa4 DL |
531 | pim_ifp->mroute_vif_index, |
532 | oil_origin(channel_oil), | |
533 | oil_mcastgrp(channel_oil)); | |
c3156184 | 534 | } |
d62a17ae | 535 | |
a9338fa4 DL |
536 | oil_if_set(channel_oil, pim_ifp->mroute_vif_index, |
537 | old_ttl); | |
c3156184 SP |
538 | return -5; |
539 | } | |
d62a17ae | 540 | } |
541 | ||
542 | channel_oil->oif_creation[pim_ifp->mroute_vif_index] = | |
543 | pim_time_monotonic_sec(); | |
544 | ++channel_oil->oil_size; | |
545 | channel_oil->oif_flags[pim_ifp->mroute_vif_index] |= proto_mask; | |
546 | ||
547 | if (PIM_DEBUG_MROUTE) { | |
d62a17ae | 548 | zlog_debug( |
a9338fa4 DL |
549 | "%s(%s): (S,G)=(%pPAs,%pPAs): proto_mask=%u OIF=%s vif_index=%d: DONE", |
550 | __func__, caller, oil_origin(channel_oil), | |
551 | oil_mcastgrp(channel_oil), | |
552 | proto_mask, | |
15569c58 | 553 | oif->name, pim_ifp->mroute_vif_index); |
d62a17ae | 554 | } |
555 | ||
556 | return 0; | |
1865a44a | 557 | } |
ce0ddb4e | 558 | |
d62a17ae | 559 | int pim_channel_oil_empty(struct channel_oil *c_oil) |
ce0ddb4e | 560 | { |
30b82c7a | 561 | static struct channel_oil null_oil; |
a5fa9822 | 562 | |
d62a17ae | 563 | if (!c_oil) |
564 | return 1; | |
d62a17ae | 565 | |
9e558d9a AK |
566 | /* exclude pimreg from the OIL when checking if the inherited_oil is |
567 | * non-NULL. | |
568 | * pimreg device (in all vrfs) uses a vifi of | |
569 | * 0 (PIM_OIF_PIM_REGISTER_VIF) so we simply mfcc_ttls[0] */ | |
30b82c7a DS |
570 | if (oil_if_has(c_oil, 0)) |
571 | oil_if_set(&null_oil, 0, 1); | |
572 | else | |
573 | oil_if_set(&null_oil, 0, 0); | |
a5fa9822 | 574 | |
30b82c7a | 575 | return !oil_if_cmp(&c_oil->oil, &null_oil.oil); |
ce0ddb4e | 576 | } |