]>
Commit | Line | Data |
---|---|---|
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 | ||
12e41d03 DL |
22 | #include "log.h" |
23 | #include "zclient.h" | |
24 | #include "memory.h" | |
25 | #include "thread.h" | |
26 | #include "linklist.h" | |
dfe43e25 DW |
27 | #include "vty.h" |
28 | #include "plist.h" | |
0f588989 DS |
29 | #include "hash.h" |
30 | #include "jhash.h" | |
9c5e4d62 | 31 | #include "wheel.h" |
12e41d03 DL |
32 | |
33 | #include "pimd.h" | |
34 | #include "pim_pim.h" | |
35 | #include "pim_str.h" | |
36 | #include "pim_time.h" | |
37 | #include "pim_iface.h" | |
38 | #include "pim_join.h" | |
39 | #include "pim_zlookup.h" | |
40 | #include "pim_upstream.h" | |
41 | #include "pim_ifchannel.h" | |
42 | #include "pim_neighbor.h" | |
43 | #include "pim_rpf.h" | |
44 | #include "pim_zebra.h" | |
45 | #include "pim_oil.h" | |
46 | #include "pim_macro.h" | |
8f5f5e91 | 47 | #include "pim_rp.h" |
f14248dd | 48 | #include "pim_br.h" |
627ed2a3 | 49 | #include "pim_register.h" |
3c72d654 | 50 | #include "pim_msdp.h" |
982bff89 | 51 | #include "pim_jp_agg.h" |
1bc98276 | 52 | #include "pim_nht.h" |
15a5dafe | 53 | #include "pim_ssm.h" |
b9f3a51c | 54 | #include "pim_vxlan.h" |
12e41d03 | 55 | |
982bff89 | 56 | static void join_timer_stop(struct pim_upstream *up); |
d62a17ae | 57 | static void |
58 | pim_upstream_update_assert_tracking_desired(struct pim_upstream *up); | |
12e41d03 | 59 | |
cfa91a87 DS |
60 | /* |
61 | * A (*,G) or a (*,*) is going away | |
62 | * remove the parent pointer from | |
63 | * those pointing at us | |
64 | */ | |
9b29ea95 DS |
65 | static void pim_upstream_remove_children(struct pim_instance *pim, |
66 | struct pim_upstream *up) | |
cfa91a87 | 67 | { |
d62a17ae | 68 | struct pim_upstream *child; |
69 | ||
70 | if (!up->sources) | |
71 | return; | |
72 | ||
73 | while (!list_isempty(up->sources)) { | |
74 | child = listnode_head(up->sources); | |
75 | listnode_delete(up->sources, child); | |
76 | if (PIM_UPSTREAM_FLAG_TEST_SRC_LHR(child->flags)) { | |
77 | PIM_UPSTREAM_FLAG_UNSET_SRC_LHR(child->flags); | |
9b29ea95 DS |
78 | child = pim_upstream_del(pim, child, |
79 | __PRETTY_FUNCTION__); | |
d62a17ae | 80 | } |
81 | if (child) | |
82 | child->parent = NULL; | |
83 | } | |
6a154c88 | 84 | list_delete(&up->sources); |
cfa91a87 DS |
85 | } |
86 | ||
87 | /* | |
88 | * A (*,G) or a (*,*) is being created | |
89 | * Find the children that would point | |
90 | * at us. | |
91 | */ | |
9b29ea95 DS |
92 | static void pim_upstream_find_new_children(struct pim_instance *pim, |
93 | struct pim_upstream *up) | |
cfa91a87 | 94 | { |
d62a17ae | 95 | struct pim_upstream *child; |
96 | struct listnode *ch_node; | |
97 | ||
98 | if ((up->sg.src.s_addr != INADDR_ANY) | |
99 | && (up->sg.grp.s_addr != INADDR_ANY)) | |
100 | return; | |
101 | ||
102 | if ((up->sg.src.s_addr == INADDR_ANY) | |
103 | && (up->sg.grp.s_addr == INADDR_ANY)) | |
104 | return; | |
105 | ||
9b29ea95 | 106 | for (ALL_LIST_ELEMENTS_RO(pim->upstream_list, ch_node, child)) { |
d62a17ae | 107 | if ((up->sg.grp.s_addr != INADDR_ANY) |
108 | && (child->sg.grp.s_addr == up->sg.grp.s_addr) | |
109 | && (child != up)) { | |
110 | child->parent = up; | |
111 | listnode_add_sort(up->sources, child); | |
112 | } | |
03417ccd | 113 | } |
cfa91a87 DS |
114 | } |
115 | ||
4d99418b DS |
116 | /* |
117 | * If we have a (*,*) || (S,*) there is no parent | |
118 | * If we have a (S,G), find the (*,G) | |
119 | * If we have a (*,G), find the (*,*) | |
120 | */ | |
9b29ea95 DS |
121 | static struct pim_upstream *pim_upstream_find_parent(struct pim_instance *pim, |
122 | struct pim_upstream *child) | |
4d99418b | 123 | { |
d62a17ae | 124 | struct prefix_sg any = child->sg; |
125 | struct pim_upstream *up = NULL; | |
4d99418b | 126 | |
d62a17ae | 127 | // (S,G) |
128 | if ((child->sg.src.s_addr != INADDR_ANY) | |
129 | && (child->sg.grp.s_addr != INADDR_ANY)) { | |
130 | any.src.s_addr = INADDR_ANY; | |
9b29ea95 | 131 | up = pim_upstream_find(pim, &any); |
03417ccd | 132 | |
d62a17ae | 133 | if (up) |
134 | listnode_add(up->sources, child); | |
03417ccd | 135 | |
d62a17ae | 136 | return up; |
137 | } | |
4d99418b | 138 | |
d62a17ae | 139 | return NULL; |
4d99418b DS |
140 | } |
141 | ||
12e41d03 DL |
142 | static void upstream_channel_oil_detach(struct pim_upstream *up) |
143 | { | |
a155fed5 AK |
144 | struct channel_oil *channel_oil = up->channel_oil; |
145 | ||
146 | if (channel_oil) { | |
d62a17ae | 147 | /* Detaching from channel_oil, channel_oil may exist post del, |
148 | but upstream would not keep reference of it | |
149 | */ | |
a155fed5 | 150 | channel_oil->up = NULL; |
d62a17ae | 151 | up->channel_oil = NULL; |
a155fed5 AK |
152 | |
153 | /* attempt to delete channel_oil; if channel_oil is being held | |
154 | * because of other references cleanup info such as "Mute" | |
155 | * inferred from the parent upstream | |
156 | */ | |
157 | pim_channel_oil_upstream_deref(channel_oil); | |
d62a17ae | 158 | } |
a155fed5 | 159 | |
12e41d03 DL |
160 | } |
161 | ||
9b29ea95 DS |
162 | struct pim_upstream *pim_upstream_del(struct pim_instance *pim, |
163 | struct pim_upstream *up, const char *name) | |
12e41d03 | 164 | { |
7692c5ae DS |
165 | struct listnode *node, *nnode; |
166 | struct pim_ifchannel *ch; | |
d62a17ae | 167 | bool notify_msdp = false; |
168 | struct prefix nht_p; | |
169 | ||
23fc858a | 170 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 171 | zlog_debug( |
8dbdb215 | 172 | "%s(%s): Delete %s[%s] ref count: %d , flags: %d c_oil ref count %d (Pre decrement)", |
996c9314 LB |
173 | __PRETTY_FUNCTION__, name, up->sg_str, pim->vrf->name, |
174 | up->ref_count, up->flags, | |
175 | up->channel_oil->oil_ref_count); | |
d62a17ae | 176 | |
e83f3b31 | 177 | assert(up->ref_count > 0); |
178 | ||
d62a17ae | 179 | --up->ref_count; |
180 | ||
181 | if (up->ref_count >= 1) | |
182 | return up; | |
183 | ||
184 | THREAD_OFF(up->t_ka_timer); | |
185 | THREAD_OFF(up->t_rs_timer); | |
186 | THREAD_OFF(up->t_msdp_reg_timer); | |
187 | ||
188 | if (up->join_state == PIM_UPSTREAM_JOINED) { | |
189 | pim_jp_agg_single_upstream_send(&up->rpf, up, 0); | |
190 | ||
191 | if (up->sg.src.s_addr == INADDR_ANY) { | |
192 | /* if a (*, G) entry in the joined state is being | |
193 | * deleted we | |
194 | * need to notify MSDP */ | |
195 | notify_msdp = true; | |
196 | } | |
197 | } | |
198 | ||
199 | join_timer_stop(up); | |
200 | pim_jp_agg_upstream_verification(up, false); | |
201 | up->rpf.source_nexthop.interface = NULL; | |
202 | ||
203 | if (up->sg.src.s_addr != INADDR_ANY) { | |
391b8b08 DS |
204 | if (pim->upstream_sg_wheel) |
205 | wheel_remove_item(pim->upstream_sg_wheel, up); | |
d62a17ae | 206 | notify_msdp = true; |
207 | } | |
208 | ||
d62a17ae | 209 | pim_mroute_del(up->channel_oil, __PRETTY_FUNCTION__); |
210 | upstream_channel_oil_detach(up); | |
211 | ||
7692c5ae DS |
212 | for (ALL_LIST_ELEMENTS(up->ifchannels, node, nnode, ch)) |
213 | pim_ifchannel_delete(ch); | |
6a154c88 | 214 | list_delete(&up->ifchannels); |
d62a17ae | 215 | |
7692c5ae DS |
216 | pim_upstream_remove_children(pim, up); |
217 | if (up->sources) | |
6a154c88 | 218 | list_delete(&up->sources); |
7692c5ae | 219 | |
d62a17ae | 220 | if (up->parent && up->parent->sources) |
221 | listnode_delete(up->parent->sources, up); | |
222 | up->parent = NULL; | |
223 | ||
9b29ea95 DS |
224 | listnode_delete(pim->upstream_list, up); |
225 | hash_release(pim->upstream_hash, up); | |
d62a17ae | 226 | |
227 | if (notify_msdp) { | |
472ad383 | 228 | pim_msdp_up_del(pim, &up->sg); |
d62a17ae | 229 | } |
230 | ||
246445a3 SP |
231 | /* When RP gets deleted, pim_rp_del() deregister addr with Zebra NHT |
232 | * and assign up->upstream_addr as INADDR_ANY. | |
233 | * So before de-registering the upstream address, check if is not equal | |
234 | * to INADDR_ANY. This is done in order to avoid de-registering for | |
235 | * 255.255.255.255 which is maintained for some reason.. | |
236 | */ | |
237 | if (up->upstream_addr.s_addr != INADDR_ANY) { | |
238 | /* Deregister addr with Zebra NHT */ | |
239 | nht_p.family = AF_INET; | |
240 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
241 | nht_p.u.prefix4 = up->upstream_addr; | |
23fc858a | 242 | if (PIM_DEBUG_PIM_TRACE) { |
246445a3 SP |
243 | char buf[PREFIX2STR_BUFFER]; |
244 | prefix2str(&nht_p, buf, sizeof(buf)); | |
245 | zlog_debug("%s: Deregister upstream %s addr %s with Zebra NHT", | |
246 | __PRETTY_FUNCTION__, up->sg_str, buf); | |
247 | } | |
4533b847 | 248 | pim_delete_tracked_nexthop(pim, &nht_p, up, NULL, false); |
d62a17ae | 249 | } |
d62a17ae | 250 | |
172e45dc | 251 | XFREE(MTYPE_PIM_UPSTREAM, up); |
d62a17ae | 252 | |
253 | return NULL; | |
12e41d03 DL |
254 | } |
255 | ||
d62a17ae | 256 | void pim_upstream_send_join(struct pim_upstream *up) |
12e41d03 | 257 | { |
957d93ea | 258 | if (!up->rpf.source_nexthop.interface) { |
23fc858a | 259 | if (PIM_DEBUG_PIM_TRACE) |
957d93ea SP |
260 | zlog_debug("%s: up %s RPF is not present", |
261 | __PRETTY_FUNCTION__, up->sg_str); | |
262 | return; | |
263 | } | |
264 | ||
23fc858a | 265 | if (PIM_DEBUG_PIM_TRACE) { |
d62a17ae | 266 | char rpf_str[PREFIX_STRLEN]; |
267 | pim_addr_dump("<rpf?>", &up->rpf.rpf_addr, rpf_str, | |
268 | sizeof(rpf_str)); | |
269 | zlog_debug("%s: RPF'%s=%s(%s) for Interface %s", | |
270 | __PRETTY_FUNCTION__, up->sg_str, rpf_str, | |
271 | pim_upstream_state2str(up->join_state), | |
272 | up->rpf.source_nexthop.interface->name); | |
273 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) { | |
274 | zlog_debug("%s: can't send join upstream: RPF'%s=%s", | |
275 | __PRETTY_FUNCTION__, up->sg_str, rpf_str); | |
276 | /* warning only */ | |
277 | } | |
278 | } | |
279 | ||
280 | /* send Join(S,G) to the current upstream neighbor */ | |
281 | pim_jp_agg_single_upstream_send(&up->rpf, up, 1 /* join */); | |
12e41d03 DL |
282 | } |
283 | ||
284 | static int on_join_timer(struct thread *t) | |
285 | { | |
d62a17ae | 286 | struct pim_upstream *up; |
12e41d03 | 287 | |
d62a17ae | 288 | up = THREAD_ARG(t); |
12e41d03 | 289 | |
957d93ea | 290 | if (!up->rpf.source_nexthop.interface) { |
23fc858a | 291 | if (PIM_DEBUG_PIM_TRACE) |
957d93ea SP |
292 | zlog_debug("%s: up %s RPF is not present", |
293 | __PRETTY_FUNCTION__, up->sg_str); | |
294 | return 0; | |
295 | } | |
296 | ||
d62a17ae | 297 | /* |
298 | * In the case of a HFR we will not ahve anyone to send this to. | |
299 | */ | |
300 | if (PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) | |
301 | return 0; | |
bb6e291f | 302 | |
d62a17ae | 303 | /* |
304 | * Don't send the join if the outgoing interface is a loopback | |
305 | * But since this might change leave the join timer running | |
306 | */ | |
307 | if (up->rpf.source_nexthop | |
308 | .interface && !if_is_loopback(up->rpf.source_nexthop.interface)) | |
309 | pim_upstream_send_join(up); | |
12e41d03 | 310 | |
d62a17ae | 311 | join_timer_start(up); |
12e41d03 | 312 | |
d62a17ae | 313 | return 0; |
12e41d03 DL |
314 | } |
315 | ||
982bff89 | 316 | static void join_timer_stop(struct pim_upstream *up) |
12e41d03 | 317 | { |
47e3ce59 | 318 | struct pim_neighbor *nbr = NULL; |
957d93ea | 319 | |
d62a17ae | 320 | THREAD_OFF(up->t_join_timer); |
7eb90689 | 321 | |
47e3ce59 SP |
322 | if (up->rpf.source_nexthop.interface) |
323 | nbr = pim_neighbor_find(up->rpf.source_nexthop.interface, | |
324 | up->rpf.rpf_addr.u.prefix4); | |
982bff89 | 325 | |
d62a17ae | 326 | if (nbr) |
327 | pim_jp_agg_remove_group(nbr->upstream_jp_agg, up); | |
982bff89 | 328 | |
d62a17ae | 329 | pim_jp_agg_upstream_verification(up, false); |
982bff89 DS |
330 | } |
331 | ||
d62a17ae | 332 | void join_timer_start(struct pim_upstream *up) |
982bff89 | 333 | { |
d62a17ae | 334 | struct pim_neighbor *nbr = NULL; |
335 | ||
336 | if (up->rpf.source_nexthop.interface) { | |
337 | nbr = pim_neighbor_find(up->rpf.source_nexthop.interface, | |
338 | up->rpf.rpf_addr.u.prefix4); | |
339 | ||
340 | if (PIM_DEBUG_PIM_EVENTS) { | |
341 | zlog_debug( | |
342 | "%s: starting %d sec timer for upstream (S,G)=%s", | |
5b45753e | 343 | __PRETTY_FUNCTION__, router->t_periodic, |
d62a17ae | 344 | up->sg_str); |
345 | } | |
346 | } | |
347 | ||
348 | if (nbr) | |
349 | pim_jp_agg_add_group(nbr->upstream_jp_agg, up, 1); | |
350 | else { | |
351 | THREAD_OFF(up->t_join_timer); | |
36417fcc | 352 | thread_add_timer(router->master, on_join_timer, up, |
5b45753e | 353 | router->t_periodic, &up->t_join_timer); |
d62a17ae | 354 | } |
355 | pim_jp_agg_upstream_verification(up, true); | |
12e41d03 DL |
356 | } |
357 | ||
982bff89 DS |
358 | /* |
359 | * This is only called when we are switching the upstream | |
360 | * J/P from one neighbor to another | |
361 | * | |
362 | * As such we need to remove from the old list and | |
363 | * add to the new list. | |
364 | */ | |
d62a17ae | 365 | void pim_upstream_join_timer_restart(struct pim_upstream *up, |
366 | struct pim_rpf *old) | |
12e41d03 | 367 | { |
d62a17ae | 368 | // THREAD_OFF(up->t_join_timer); |
369 | join_timer_start(up); | |
12e41d03 DL |
370 | } |
371 | ||
372 | static void pim_upstream_join_timer_restart_msec(struct pim_upstream *up, | |
373 | int interval_msec) | |
374 | { | |
d62a17ae | 375 | if (PIM_DEBUG_PIM_EVENTS) { |
376 | zlog_debug("%s: restarting %d msec timer for upstream (S,G)=%s", | |
377 | __PRETTY_FUNCTION__, interval_msec, up->sg_str); | |
378 | } | |
379 | ||
380 | THREAD_OFF(up->t_join_timer); | |
36417fcc | 381 | thread_add_timer_msec(router->master, on_join_timer, up, interval_msec, |
d62a17ae | 382 | &up->t_join_timer); |
12e41d03 DL |
383 | } |
384 | ||
385 | void pim_upstream_join_suppress(struct pim_upstream *up, | |
d62a17ae | 386 | struct in_addr rpf_addr, int holdtime) |
12e41d03 | 387 | { |
d62a17ae | 388 | long t_joinsuppress_msec; |
389 | long join_timer_remain_msec; | |
390 | ||
957d93ea | 391 | if (!up->rpf.source_nexthop.interface) { |
23fc858a | 392 | if (PIM_DEBUG_PIM_TRACE) |
957d93ea SP |
393 | zlog_debug("%s: up %s RPF is not present", |
394 | __PRETTY_FUNCTION__, up->sg_str); | |
395 | return; | |
396 | } | |
397 | ||
d62a17ae | 398 | t_joinsuppress_msec = |
399 | MIN(pim_if_t_suppressed_msec(up->rpf.source_nexthop.interface), | |
400 | 1000 * holdtime); | |
401 | ||
402 | join_timer_remain_msec = pim_time_timer_remain_msec(up->t_join_timer); | |
403 | ||
23fc858a | 404 | if (PIM_DEBUG_PIM_TRACE) { |
d62a17ae | 405 | char rpf_str[INET_ADDRSTRLEN]; |
406 | pim_inet4_dump("<rpf?>", rpf_addr, rpf_str, sizeof(rpf_str)); | |
407 | zlog_debug( | |
408 | "%s %s: detected Join%s to RPF'(S,G)=%s: join_timer=%ld msec t_joinsuppress=%ld msec", | |
409 | __FILE__, __PRETTY_FUNCTION__, up->sg_str, rpf_str, | |
410 | join_timer_remain_msec, t_joinsuppress_msec); | |
411 | } | |
412 | ||
413 | if (join_timer_remain_msec < t_joinsuppress_msec) { | |
23fc858a | 414 | if (PIM_DEBUG_PIM_TRACE) { |
d62a17ae | 415 | zlog_debug( |
416 | "%s %s: suppressing Join(S,G)=%s for %ld msec", | |
417 | __FILE__, __PRETTY_FUNCTION__, up->sg_str, | |
418 | t_joinsuppress_msec); | |
419 | } | |
420 | ||
421 | pim_upstream_join_timer_restart_msec(up, t_joinsuppress_msec); | |
422 | } | |
12e41d03 DL |
423 | } |
424 | ||
425 | void pim_upstream_join_timer_decrease_to_t_override(const char *debug_label, | |
d62a17ae | 426 | struct pim_upstream *up) |
12e41d03 | 427 | { |
d62a17ae | 428 | long join_timer_remain_msec; |
429 | int t_override_msec; | |
430 | ||
957d93ea | 431 | if (!up->rpf.source_nexthop.interface) { |
23fc858a | 432 | if (PIM_DEBUG_PIM_TRACE) |
957d93ea SP |
433 | zlog_debug("%s: up %s RPF is not present", |
434 | __PRETTY_FUNCTION__, up->sg_str); | |
435 | return; | |
436 | } | |
437 | ||
d62a17ae | 438 | join_timer_remain_msec = pim_time_timer_remain_msec(up->t_join_timer); |
439 | t_override_msec = | |
440 | pim_if_t_override_msec(up->rpf.source_nexthop.interface); | |
441 | ||
23fc858a | 442 | if (PIM_DEBUG_PIM_TRACE) { |
d62a17ae | 443 | char rpf_str[INET_ADDRSTRLEN]; |
444 | pim_inet4_dump("<rpf?>", up->rpf.rpf_addr.u.prefix4, rpf_str, | |
445 | sizeof(rpf_str)); | |
446 | zlog_debug( | |
447 | "%s: to RPF'%s=%s: join_timer=%ld msec t_override=%d msec", | |
448 | debug_label, up->sg_str, rpf_str, | |
449 | join_timer_remain_msec, t_override_msec); | |
450 | } | |
451 | ||
452 | if (join_timer_remain_msec > t_override_msec) { | |
23fc858a | 453 | if (PIM_DEBUG_PIM_TRACE) { |
d62a17ae | 454 | zlog_debug( |
455 | "%s: decreasing (S,G)=%s join timer to t_override=%d msec", | |
456 | debug_label, up->sg_str, t_override_msec); | |
457 | } | |
458 | ||
459 | pim_upstream_join_timer_restart_msec(up, t_override_msec); | |
460 | } | |
12e41d03 DL |
461 | } |
462 | ||
463 | static void forward_on(struct pim_upstream *up) | |
464 | { | |
d62a17ae | 465 | struct listnode *chnode; |
466 | struct listnode *chnextnode; | |
467 | struct pim_ifchannel *ch = NULL; | |
12e41d03 | 468 | |
d62a17ae | 469 | /* scan (S,G) state */ |
470 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
471 | if (pim_macro_chisin_oiflist(ch)) | |
472 | pim_forward_start(ch); | |
12e41d03 | 473 | |
d62a17ae | 474 | } /* scan iface channel list */ |
12e41d03 DL |
475 | } |
476 | ||
477 | static void forward_off(struct pim_upstream *up) | |
478 | { | |
d62a17ae | 479 | struct listnode *chnode; |
480 | struct listnode *chnextnode; | |
481 | struct pim_ifchannel *ch; | |
12e41d03 | 482 | |
d62a17ae | 483 | /* scan per-interface (S,G) state */ |
484 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
12e41d03 | 485 | |
aabb9a2f | 486 | pim_forward_stop(ch, false); |
12e41d03 | 487 | |
d62a17ae | 488 | } /* scan iface channel list */ |
12e41d03 DL |
489 | } |
490 | ||
d62a17ae | 491 | static int pim_upstream_could_register(struct pim_upstream *up) |
bb6e291f | 492 | { |
d62a17ae | 493 | struct pim_interface *pim_ifp = NULL; |
494 | ||
8eeaef9b AK |
495 | /* FORCE_PIMREG is a generic flag to let an app like VxLAN-AA register |
496 | * a source on an upstream entry even if the source is not directly | |
497 | * connected on the IIF. | |
498 | */ | |
499 | if (PIM_UPSTREAM_FLAG_TEST_FORCE_PIMREG(up->flags)) | |
500 | return 1; | |
501 | ||
d62a17ae | 502 | if (up->rpf.source_nexthop.interface) |
503 | pim_ifp = up->rpf.source_nexthop.interface->info; | |
504 | else { | |
23fc858a | 505 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 506 | zlog_debug("%s: up %s RPF is not present", |
507 | __PRETTY_FUNCTION__, up->sg_str); | |
508 | } | |
bb6e291f | 509 | |
d62a17ae | 510 | if (pim_ifp && PIM_I_am_DR(pim_ifp) |
511 | && pim_if_connected_to_source(up->rpf.source_nexthop.interface, | |
512 | up->sg.src)) | |
513 | return 1; | |
bb6e291f | 514 | |
d62a17ae | 515 | return 0; |
bb6e291f DS |
516 | } |
517 | ||
0437e105 | 518 | /* Source registration is suppressed for SSM groups. When the SSM range changes |
15a5dafe | 519 | * we re-revaluate register setup for existing upstream entries */ |
9b29ea95 | 520 | void pim_upstream_register_reevaluate(struct pim_instance *pim) |
15a5dafe | 521 | { |
d62a17ae | 522 | struct listnode *upnode; |
523 | struct pim_upstream *up; | |
524 | ||
9b29ea95 | 525 | for (ALL_LIST_ELEMENTS_RO(pim->upstream_list, upnode, up)) { |
d62a17ae | 526 | /* If FHR is set CouldRegister is True. Also check if the flow |
527 | * is actually active; if it is not kat setup will trigger | |
528 | * source | |
529 | * registration whenever the flow becomes active. */ | |
530 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags) || !up->t_ka_timer) | |
531 | continue; | |
532 | ||
6f439a70 | 533 | if (pim_is_grp_ssm(pim, up->sg.grp)) { |
d62a17ae | 534 | /* clear the register state for SSM groups */ |
535 | if (up->reg_state != PIM_REG_NOINFO) { | |
536 | if (PIM_DEBUG_PIM_EVENTS) | |
537 | zlog_debug( | |
538 | "Clear register for %s as G is now SSM", | |
539 | up->sg_str); | |
540 | /* remove regiface from the OIL if it is there*/ | |
541 | pim_channel_del_oif(up->channel_oil, | |
9b29ea95 | 542 | pim->regiface, |
1b249e70 AK |
543 | PIM_OIF_FLAG_PROTO_PIM, |
544 | __func__); | |
d62a17ae | 545 | up->reg_state = PIM_REG_NOINFO; |
546 | } | |
547 | } else { | |
548 | /* register ASM sources with the RP */ | |
549 | if (up->reg_state == PIM_REG_NOINFO) { | |
550 | if (PIM_DEBUG_PIM_EVENTS) | |
551 | zlog_debug( | |
552 | "Register %s as G is now ASM", | |
553 | up->sg_str); | |
554 | pim_channel_add_oif(up->channel_oil, | |
9b29ea95 | 555 | pim->regiface, |
1b249e70 AK |
556 | PIM_OIF_FLAG_PROTO_PIM, |
557 | __func__); | |
d62a17ae | 558 | up->reg_state = PIM_REG_JOIN; |
559 | } | |
560 | } | |
561 | } | |
15a5dafe | 562 | } |
563 | ||
69e3538c AK |
564 | /* RFC7761, Section 4.2 “Data Packet Forwarding Rules” says we should |
565 | * forward a S - | |
566 | * 1. along the SPT if SPTbit is set | |
567 | * 2. and along the RPT if SPTbit is not set | |
568 | * If forwarding is hw accelerated i.e. control and dataplane components | |
569 | * are separate you may not be able to reliably set SPT bit on intermediate | |
570 | * routers while still fowarding on the (S,G,rpt). | |
571 | * | |
572 | * This macro is a slight deviation on the RFC and uses "traffic-agnostic" | |
573 | * criteria to decide between using the RPT vs. SPT for forwarding. | |
574 | */ | |
575 | void pim_upstream_update_use_rpt(struct pim_upstream *up, | |
576 | bool update_mroute) | |
577 | { | |
578 | bool old_use_rpt; | |
579 | bool new_use_rpt; | |
580 | ||
581 | if (up->sg.src.s_addr == INADDR_ANY) | |
582 | return; | |
583 | ||
584 | old_use_rpt = !!PIM_UPSTREAM_FLAG_TEST_USE_RPT(up->flags); | |
585 | ||
586 | /* We will use the SPT (IIF=RPF_interface(S) if - | |
587 | * 1. We have decided to join the SPT | |
588 | * 2. We are FHR | |
589 | * 3. Source is directly connected | |
590 | * 4. We are RP (parent's IIF is lo or vrf-device) | |
591 | * In all other cases the source will stay along the RPT and | |
592 | * IIF=RPF_interface(RP). | |
593 | */ | |
594 | if (up->join_state == PIM_UPSTREAM_JOINED || | |
595 | PIM_UPSTREAM_FLAG_TEST_FHR(up->flags) || | |
596 | pim_if_connected_to_source( | |
597 | up->rpf.source_nexthop.interface, | |
598 | up->sg.src) || | |
599 | /* XXX - need to switch this to a more efficient | |
600 | * lookup API | |
601 | */ | |
602 | I_am_RP(up->pim, up->sg.grp)) | |
603 | /* use SPT */ | |
604 | PIM_UPSTREAM_FLAG_UNSET_USE_RPT(up->flags); | |
605 | else | |
606 | /* use RPT */ | |
607 | PIM_UPSTREAM_FLAG_SET_USE_RPT(up->flags); | |
608 | ||
609 | new_use_rpt = !!PIM_UPSTREAM_FLAG_TEST_USE_RPT(up->flags); | |
610 | if (old_use_rpt != new_use_rpt) { | |
611 | if (PIM_DEBUG_PIM_EVENTS) | |
612 | zlog_debug("%s switched from %s to %s", | |
613 | up->sg_str, | |
614 | old_use_rpt?"RPT":"SPT", | |
615 | new_use_rpt?"RPT":"SPT"); | |
616 | if (update_mroute) | |
617 | pim_upstream_mroute_add(up->channel_oil, __func__); | |
618 | } | |
619 | } | |
620 | ||
1eca8576 | 621 | void pim_upstream_switch(struct pim_instance *pim, struct pim_upstream *up, |
d62a17ae | 622 | enum pim_upstream_state new_state) |
12e41d03 | 623 | { |
d62a17ae | 624 | enum pim_upstream_state old_state = up->join_state; |
625 | ||
957d93ea | 626 | if (up->upstream_addr.s_addr == INADDR_ANY) { |
47e3ce59 SP |
627 | if (PIM_DEBUG_PIM_EVENTS) |
628 | zlog_debug("%s: RPF not configured for %s", | |
629 | __PRETTY_FUNCTION__, up->sg_str); | |
957d93ea SP |
630 | return; |
631 | } | |
632 | ||
633 | if (!up->rpf.source_nexthop.interface) { | |
47e3ce59 SP |
634 | if (PIM_DEBUG_PIM_EVENTS) |
635 | zlog_debug("%s: RP not reachable for %s", | |
636 | __PRETTY_FUNCTION__, up->sg_str); | |
957d93ea SP |
637 | return; |
638 | } | |
639 | ||
d62a17ae | 640 | if (PIM_DEBUG_PIM_EVENTS) { |
641 | zlog_debug("%s: PIM_UPSTREAM_%s: (S,G) old: %s new: %s", | |
642 | __PRETTY_FUNCTION__, up->sg_str, | |
643 | pim_upstream_state2str(up->join_state), | |
644 | pim_upstream_state2str(new_state)); | |
645 | } | |
646 | ||
647 | up->join_state = new_state; | |
648 | if (old_state != new_state) | |
649 | up->state_transition = pim_time_monotonic_sec(); | |
650 | ||
651 | pim_upstream_update_assert_tracking_desired(up); | |
652 | ||
653 | if (new_state == PIM_UPSTREAM_JOINED) { | |
b077f571 | 654 | pim_upstream_inherited_olist_decide(pim, up); |
d62a17ae | 655 | if (old_state != PIM_UPSTREAM_JOINED) { |
656 | int old_fhr = PIM_UPSTREAM_FLAG_TEST_FHR(up->flags); | |
b077f571 | 657 | |
1eca8576 | 658 | pim_msdp_up_join_state_changed(pim, up); |
d62a17ae | 659 | if (pim_upstream_could_register(up)) { |
660 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); | |
661 | if (!old_fhr | |
662 | && PIM_UPSTREAM_FLAG_TEST_SRC_STREAM( | |
663 | up->flags)) { | |
664 | pim_upstream_keep_alive_timer_start( | |
19b807ca | 665 | up, pim->keep_alive_time); |
d62a17ae | 666 | pim_register_join(up); |
667 | } | |
668 | } else { | |
669 | pim_upstream_send_join(up); | |
670 | join_timer_start(up); | |
671 | } | |
d62a17ae | 672 | } |
673 | } else { | |
674 | ||
675 | forward_off(up); | |
676 | if (old_state == PIM_UPSTREAM_JOINED) | |
1eca8576 | 677 | pim_msdp_up_join_state_changed(pim, up); |
d62a17ae | 678 | |
679 | /* IHR, Trigger SGRpt on *,G IIF to prune S,G from RPT towards | |
680 | RP. | |
681 | If I am RP for G then send S,G prune to its IIF. */ | |
682 | if (pim_upstream_is_sg_rpt(up) && up->parent | |
1eca8576 | 683 | && !I_am_RP(pim, up->sg.grp)) { |
d62a17ae | 684 | if (PIM_DEBUG_PIM_TRACE_DETAIL) |
685 | zlog_debug( | |
957d93ea SP |
686 | "%s: *,G IIF %s S,G IIF %s ", |
687 | __PRETTY_FUNCTION__, | |
688 | up->parent->rpf.source_nexthop.interface ? | |
689 | up->parent->rpf.source_nexthop.interface->name | |
690 | : "Unknown", | |
691 | up->rpf.source_nexthop.interface ? | |
692 | up->rpf.source_nexthop.interface->name : | |
693 | "Unknown"); | |
d62a17ae | 694 | pim_jp_agg_single_upstream_send(&up->parent->rpf, |
695 | up->parent, | |
696 | 1 /* (W,G) Join */); | |
697 | } else | |
698 | pim_jp_agg_single_upstream_send(&up->rpf, up, | |
699 | 0 /* prune */); | |
700 | join_timer_stop(up); | |
701 | } | |
69e3538c AK |
702 | |
703 | if (old_state != new_state) | |
704 | pim_upstream_update_use_rpt(up, true /*update_mroute*/); | |
12e41d03 DL |
705 | } |
706 | ||
d62a17ae | 707 | int pim_upstream_compare(void *arg1, void *arg2) |
03417ccd | 708 | { |
d62a17ae | 709 | const struct pim_upstream *up1 = (const struct pim_upstream *)arg1; |
710 | const struct pim_upstream *up2 = (const struct pim_upstream *)arg2; | |
03417ccd | 711 | |
d62a17ae | 712 | if (ntohl(up1->sg.grp.s_addr) < ntohl(up2->sg.grp.s_addr)) |
713 | return -1; | |
03417ccd | 714 | |
d62a17ae | 715 | if (ntohl(up1->sg.grp.s_addr) > ntohl(up2->sg.grp.s_addr)) |
716 | return 1; | |
03417ccd | 717 | |
d62a17ae | 718 | if (ntohl(up1->sg.src.s_addr) < ntohl(up2->sg.src.s_addr)) |
719 | return -1; | |
03417ccd | 720 | |
d62a17ae | 721 | if (ntohl(up1->sg.src.s_addr) > ntohl(up2->sg.src.s_addr)) |
722 | return 1; | |
03417ccd | 723 | |
d62a17ae | 724 | return 0; |
03417ccd DS |
725 | } |
726 | ||
6a5de0ad AK |
727 | void pim_upstream_fill_static_iif(struct pim_upstream *up, |
728 | struct interface *incoming) | |
729 | { | |
730 | up->rpf.source_nexthop.interface = incoming; | |
731 | ||
732 | /* reset other parameters to matched a connected incoming interface */ | |
733 | up->rpf.source_nexthop.mrib_nexthop_addr.family = AF_INET; | |
734 | up->rpf.source_nexthop.mrib_nexthop_addr.u.prefix4.s_addr = | |
735 | PIM_NET_INADDR_ANY; | |
736 | up->rpf.source_nexthop.mrib_metric_preference = | |
737 | ZEBRA_CONNECT_DISTANCE_DEFAULT; | |
738 | up->rpf.source_nexthop.mrib_route_metric = 0; | |
739 | up->rpf.rpf_addr.family = AF_INET; | |
740 | up->rpf.rpf_addr.u.prefix4.s_addr = PIM_NET_INADDR_ANY; | |
741 | ||
742 | } | |
743 | ||
2002dcdb DS |
744 | static struct pim_upstream *pim_upstream_new(struct pim_instance *pim, |
745 | struct prefix_sg *sg, | |
746 | struct interface *incoming, | |
0885a9f1 DS |
747 | int flags, |
748 | struct pim_ifchannel *ch) | |
12e41d03 | 749 | { |
d62a17ae | 750 | enum pim_rpf_result rpf_result; |
751 | struct pim_interface *pim_ifp; | |
752 | struct pim_upstream *up; | |
753 | ||
754 | up = XCALLOC(MTYPE_PIM_UPSTREAM, sizeof(*up)); | |
d62a17ae | 755 | |
69e3538c | 756 | up->pim = pim; |
d62a17ae | 757 | up->sg = *sg; |
758 | pim_str_sg_set(sg, up->sg_str); | |
0885a9f1 DS |
759 | if (ch) |
760 | ch->upstream = up; | |
761 | ||
9b29ea95 | 762 | up = hash_get(pim->upstream_hash, up, hash_alloc_intern); |
732c209c SP |
763 | /* Set up->upstream_addr as INADDR_ANY, if RP is not |
764 | * configured and retain the upstream data structure | |
765 | */ | |
d9c9a9ee DS |
766 | if (!pim_rp_set_upstream_addr(pim, &up->upstream_addr, sg->src, |
767 | sg->grp)) { | |
23fc858a | 768 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 769 | zlog_debug("%s: Received a (*,G) with no RP configured", |
770 | __PRETTY_FUNCTION__); | |
d62a17ae | 771 | } |
772 | ||
9b29ea95 | 773 | up->parent = pim_upstream_find_parent(pim, up); |
d62a17ae | 774 | if (up->sg.src.s_addr == INADDR_ANY) { |
775 | up->sources = list_new(); | |
776 | up->sources->cmp = pim_upstream_compare; | |
777 | } else | |
778 | up->sources = NULL; | |
779 | ||
9b29ea95 | 780 | pim_upstream_find_new_children(pim, up); |
d62a17ae | 781 | up->flags = flags; |
782 | up->ref_count = 1; | |
783 | up->t_join_timer = NULL; | |
784 | up->t_ka_timer = NULL; | |
785 | up->t_rs_timer = NULL; | |
786 | up->t_msdp_reg_timer = NULL; | |
787 | up->join_state = PIM_UPSTREAM_NOTJOINED; | |
788 | up->reg_state = PIM_REG_NOINFO; | |
789 | up->state_transition = pim_time_monotonic_sec(); | |
46dd6edb | 790 | up->channel_oil = |
7984af18 | 791 | pim_channel_oil_add(pim, &up->sg, __PRETTY_FUNCTION__); |
d62a17ae | 792 | up->sptbit = PIM_UPSTREAM_SPTBIT_FALSE; |
793 | ||
794 | up->rpf.source_nexthop.interface = NULL; | |
795 | up->rpf.source_nexthop.mrib_nexthop_addr.family = AF_INET; | |
796 | up->rpf.source_nexthop.mrib_nexthop_addr.u.prefix4.s_addr = | |
797 | PIM_NET_INADDR_ANY; | |
798 | up->rpf.source_nexthop.mrib_metric_preference = | |
d17612dd | 799 | router->infinite_assert_metric.metric_preference; |
d62a17ae | 800 | up->rpf.source_nexthop.mrib_route_metric = |
d17612dd | 801 | router->infinite_assert_metric.route_metric; |
d62a17ae | 802 | up->rpf.rpf_addr.family = AF_INET; |
803 | up->rpf.rpf_addr.u.prefix4.s_addr = PIM_NET_INADDR_ANY; | |
804 | ||
805 | up->ifchannels = list_new(); | |
806 | up->ifchannels->cmp = (int (*)(void *, void *))pim_ifchannel_compare; | |
807 | ||
808 | if (up->sg.src.s_addr != INADDR_ANY) | |
9b29ea95 | 809 | wheel_add_item(pim->upstream_sg_wheel, up); |
d62a17ae | 810 | |
02434c43 DS |
811 | if (PIM_UPSTREAM_FLAG_TEST_STATIC_IIF(up->flags) |
812 | || PIM_UPSTREAM_FLAG_TEST_SRC_NOCACHE(up->flags)) { | |
6a5de0ad AK |
813 | pim_upstream_fill_static_iif(up, incoming); |
814 | pim_ifp = up->rpf.source_nexthop.interface->info; | |
815 | assert(pim_ifp); | |
7984af18 | 816 | pim_upstream_mroute_iif_update(up->channel_oil, __func__); |
02434c43 DS |
817 | |
818 | if (PIM_UPSTREAM_FLAG_TEST_SRC_NOCACHE(up->flags)) | |
819 | pim_upstream_keep_alive_timer_start( | |
820 | up, pim->keep_alive_time); | |
46dd6edb | 821 | } else if (up->upstream_addr.s_addr != INADDR_ANY) { |
ae14da48 | 822 | rpf_result = pim_rpf_update(pim, up, NULL); |
732c209c | 823 | if (rpf_result == PIM_RPF_FAILURE) { |
23fc858a | 824 | if (PIM_DEBUG_PIM_TRACE) |
732c209c SP |
825 | zlog_debug( |
826 | "%s: Attempting to create upstream(%s), Unable to RPF for source", | |
827 | __PRETTY_FUNCTION__, up->sg_str); | |
d62a17ae | 828 | } |
829 | ||
732c209c SP |
830 | if (up->rpf.source_nexthop.interface) { |
831 | pim_ifp = up->rpf.source_nexthop.interface->info; | |
832 | if (pim_ifp) | |
7984af18 AK |
833 | pim_upstream_mroute_iif_update(up->channel_oil, |
834 | __func__); | |
732c209c | 835 | } |
69e3538c AK |
836 | pim_upstream_update_use_rpt(up, |
837 | false /*update_mroute*/); | |
d62a17ae | 838 | } |
839 | ||
9b29ea95 | 840 | listnode_add_sort(pim->upstream_list, up); |
d62a17ae | 841 | |
23fc858a | 842 | if (PIM_DEBUG_PIM_TRACE) { |
d62a17ae | 843 | zlog_debug( |
844 | "%s: Created Upstream %s upstream_addr %s ref count %d increment", | |
845 | __PRETTY_FUNCTION__, up->sg_str, | |
846 | inet_ntoa(up->upstream_addr), up->ref_count); | |
847 | } | |
848 | ||
849 | return up; | |
12e41d03 DL |
850 | } |
851 | ||
9b29ea95 DS |
852 | struct pim_upstream *pim_upstream_find(struct pim_instance *pim, |
853 | struct prefix_sg *sg) | |
12e41d03 | 854 | { |
d62a17ae | 855 | struct pim_upstream lookup; |
856 | struct pim_upstream *up = NULL; | |
12e41d03 | 857 | |
d62a17ae | 858 | lookup.sg = *sg; |
9b29ea95 | 859 | up = hash_lookup(pim->upstream_hash, &lookup); |
d62a17ae | 860 | return up; |
12e41d03 DL |
861 | } |
862 | ||
d62a17ae | 863 | struct pim_upstream *pim_upstream_find_or_add(struct prefix_sg *sg, |
69e3538c AK |
864 | struct interface *incoming, |
865 | int flags, const char *name) | |
e711cd3c | 866 | { |
69e3538c | 867 | struct pim_interface *pim_ifp = incoming->info; |
d62a17ae | 868 | |
69e3538c AK |
869 | return (pim_upstream_add(pim_ifp->pim, sg, incoming, flags, name, |
870 | NULL)); | |
e711cd3c DS |
871 | } |
872 | ||
d62a17ae | 873 | void pim_upstream_ref(struct pim_upstream *up, int flags, const char *name) |
1bf16443 | 874 | { |
69e3538c AK |
875 | /* when we go from non-FHR to FHR we need to re-eval traffic |
876 | * forwarding path | |
877 | */ | |
878 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags) && | |
879 | PIM_UPSTREAM_FLAG_TEST_FHR(flags)) { | |
880 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); | |
881 | pim_upstream_update_use_rpt(up, true /*update_mroute*/); | |
882 | } | |
883 | ||
d62a17ae | 884 | up->flags |= flags; |
885 | ++up->ref_count; | |
23fc858a | 886 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 887 | zlog_debug("%s(%s): upstream %s ref count %d increment", |
888 | __PRETTY_FUNCTION__, name, up->sg_str, | |
889 | up->ref_count); | |
1bf16443 | 890 | } |
891 | ||
2002dcdb DS |
892 | struct pim_upstream *pim_upstream_add(struct pim_instance *pim, |
893 | struct prefix_sg *sg, | |
d62a17ae | 894 | struct interface *incoming, int flags, |
0885a9f1 DS |
895 | const char *name, |
896 | struct pim_ifchannel *ch) | |
12e41d03 | 897 | { |
d62a17ae | 898 | struct pim_upstream *up = NULL; |
899 | int found = 0; | |
9b29ea95 | 900 | |
2002dcdb | 901 | up = pim_upstream_find(pim, sg); |
d62a17ae | 902 | if (up) { |
903 | pim_upstream_ref(up, flags, name); | |
904 | found = 1; | |
905 | } else { | |
0885a9f1 | 906 | up = pim_upstream_new(pim, sg, incoming, flags, ch); |
d62a17ae | 907 | } |
908 | ||
23fc858a | 909 | if (PIM_DEBUG_PIM_TRACE) { |
d62a17ae | 910 | if (up) { |
911 | char buf[PREFIX2STR_BUFFER]; | |
912 | prefix2str(&up->rpf.rpf_addr, buf, sizeof(buf)); | |
913 | zlog_debug("%s(%s): %s, iif %s (%s) found: %d: ref_count: %d", | |
f4075cb4 | 914 | __PRETTY_FUNCTION__, name, |
55785900 | 915 | up->sg_str, buf, up->rpf.source_nexthop.interface ? |
957d93ea | 916 | up->rpf.source_nexthop.interface->name : "Unknown" , |
55785900 | 917 | found, up->ref_count); |
d62a17ae | 918 | } else |
919 | zlog_debug("%s(%s): (%s) failure to create", | |
920 | __PRETTY_FUNCTION__, name, | |
921 | pim_str_sg_dump(sg)); | |
922 | } | |
12e41d03 | 923 | |
d62a17ae | 924 | return up; |
12e41d03 DL |
925 | } |
926 | ||
c8fc07cb DS |
927 | /* |
928 | * Passed in up must be the upstream for ch. starch is NULL if no | |
929 | * information | |
930 | */ | |
d62a17ae | 931 | int pim_upstream_evaluate_join_desired_interface(struct pim_upstream *up, |
932 | struct pim_ifchannel *ch, | |
933 | struct pim_ifchannel *starch) | |
7a3ddda5 | 934 | { |
d62a17ae | 935 | if (ch) { |
936 | if (PIM_IF_FLAG_TEST_S_G_RPT(ch->flags)) | |
937 | return 0; | |
938 | ||
939 | if (!pim_macro_ch_lost_assert(ch) | |
940 | && pim_macro_chisin_joins_or_include(ch)) | |
941 | return 1; | |
942 | } | |
943 | ||
944 | /* | |
945 | * joins (*,G) | |
946 | */ | |
947 | if (starch) { | |
948 | if (PIM_IF_FLAG_TEST_S_G_RPT(starch->upstream->flags)) | |
949 | return 0; | |
950 | ||
951 | if (!pim_macro_ch_lost_assert(starch) | |
952 | && pim_macro_chisin_joins_or_include(starch)) | |
953 | return 1; | |
954 | } | |
955 | ||
956 | return 0; | |
7a3ddda5 DS |
957 | } |
958 | ||
12e41d03 DL |
959 | /* |
960 | Evaluate JoinDesired(S,G): | |
961 | ||
962 | JoinDesired(S,G) is true if there is a downstream (S,G) interface I | |
963 | in the set: | |
964 | ||
965 | inherited_olist(S,G) = | |
966 | joins(S,G) (+) pim_include(S,G) (-) lost_assert(S,G) | |
967 | ||
968 | JoinDesired(S,G) may be affected by changes in the following: | |
969 | ||
970 | pim_ifp->primary_address | |
971 | pim_ifp->pim_dr_addr | |
972 | ch->ifassert_winner_metric | |
973 | ch->ifassert_winner | |
d62a17ae | 974 | ch->local_ifmembership |
12e41d03 DL |
975 | ch->ifjoin_state |
976 | ch->upstream->rpf.source_nexthop.mrib_metric_preference | |
977 | ch->upstream->rpf.source_nexthop.mrib_route_metric | |
978 | ch->upstream->rpf.source_nexthop.interface | |
979 | ||
980 | See also pim_upstream_update_join_desired() below. | |
981 | */ | |
9b29ea95 DS |
982 | int pim_upstream_evaluate_join_desired(struct pim_instance *pim, |
983 | struct pim_upstream *up) | |
12e41d03 | 984 | { |
d62a17ae | 985 | struct interface *ifp; |
d62a17ae | 986 | struct pim_ifchannel *ch, *starch; |
987 | struct pim_upstream *starup = up->parent; | |
988 | int ret = 0; | |
12e41d03 | 989 | |
451fda4f | 990 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 991 | if (!ifp->info) |
992 | continue; | |
c8fc07cb | 993 | |
d62a17ae | 994 | ch = pim_ifchannel_find(ifp, &up->sg); |
c8fc07cb | 995 | |
d62a17ae | 996 | if (starup) |
997 | starch = pim_ifchannel_find(ifp, &starup->sg); | |
998 | else | |
999 | starch = NULL; | |
c8fc07cb | 1000 | |
d62a17ae | 1001 | if (!ch && !starch) |
1002 | continue; | |
12e41d03 | 1003 | |
d62a17ae | 1004 | ret += pim_upstream_evaluate_join_desired_interface(up, ch, |
1005 | starch); | |
1006 | } /* scan iface channel list */ | |
12e41d03 | 1007 | |
d62a17ae | 1008 | return ret; /* false */ |
12e41d03 DL |
1009 | } |
1010 | ||
1011 | /* | |
1012 | See also pim_upstream_evaluate_join_desired() above. | |
1013 | */ | |
9b29ea95 DS |
1014 | void pim_upstream_update_join_desired(struct pim_instance *pim, |
1015 | struct pim_upstream *up) | |
12e41d03 | 1016 | { |
d62a17ae | 1017 | int was_join_desired; /* boolean */ |
1018 | int is_join_desired; /* boolean */ | |
1019 | ||
1020 | was_join_desired = PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED(up->flags); | |
1021 | ||
9b29ea95 | 1022 | is_join_desired = pim_upstream_evaluate_join_desired(pim, up); |
d62a17ae | 1023 | if (is_join_desired) |
1024 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED(up->flags); | |
1025 | else | |
1026 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED(up->flags); | |
1027 | ||
1028 | /* switched from false to true */ | |
47e3ce59 | 1029 | if (is_join_desired && (up->join_state == PIM_UPSTREAM_NOTJOINED)) { |
1eca8576 | 1030 | pim_upstream_switch(pim, up, PIM_UPSTREAM_JOINED); |
d62a17ae | 1031 | return; |
1032 | } | |
1033 | ||
1034 | /* switched from true to false */ | |
1035 | if (!is_join_desired && was_join_desired) { | |
1eca8576 | 1036 | pim_upstream_switch(pim, up, PIM_UPSTREAM_NOTJOINED); |
d62a17ae | 1037 | return; |
1038 | } | |
12e41d03 DL |
1039 | } |
1040 | ||
1041 | /* | |
1042 | RFC 4601 4.5.7. Sending (S,G) Join/Prune Messages | |
1043 | Transitions from Joined State | |
1044 | RPF'(S,G) GenID changes | |
1045 | ||
1046 | The upstream (S,G) state machine remains in Joined state. If the | |
1047 | Join Timer is set to expire in more than t_override seconds, reset | |
1048 | it so that it expires after t_override seconds. | |
1049 | */ | |
9b29ea95 DS |
1050 | void pim_upstream_rpf_genid_changed(struct pim_instance *pim, |
1051 | struct in_addr neigh_addr) | |
12e41d03 | 1052 | { |
d62a17ae | 1053 | struct listnode *up_node; |
1054 | struct listnode *up_nextnode; | |
1055 | struct pim_upstream *up; | |
1056 | ||
1057 | /* | |
1058 | * Scan all (S,G) upstreams searching for RPF'(S,G)=neigh_addr | |
1059 | */ | |
9b29ea95 | 1060 | for (ALL_LIST_ELEMENTS(pim->upstream_list, up_node, up_nextnode, up)) { |
d62a17ae | 1061 | |
23fc858a | 1062 | if (PIM_DEBUG_PIM_TRACE) { |
d62a17ae | 1063 | char neigh_str[INET_ADDRSTRLEN]; |
1064 | char rpf_addr_str[PREFIX_STRLEN]; | |
1065 | pim_inet4_dump("<neigh?>", neigh_addr, neigh_str, | |
1066 | sizeof(neigh_str)); | |
1067 | pim_addr_dump("<rpf?>", &up->rpf.rpf_addr, rpf_addr_str, | |
1068 | sizeof(rpf_addr_str)); | |
1069 | zlog_debug( | |
8dbdb215 | 1070 | "%s: matching neigh=%s against upstream (S,G)=%s[%s] joined=%d rpf_addr=%s", |
996c9314 LB |
1071 | __PRETTY_FUNCTION__, neigh_str, up->sg_str, |
1072 | pim->vrf->name, | |
d62a17ae | 1073 | up->join_state == PIM_UPSTREAM_JOINED, |
1074 | rpf_addr_str); | |
1075 | } | |
1076 | ||
1077 | /* consider only (S,G) upstream in Joined state */ | |
1078 | if (up->join_state != PIM_UPSTREAM_JOINED) | |
1079 | continue; | |
1080 | ||
1081 | /* match RPF'(S,G)=neigh_addr */ | |
1082 | if (up->rpf.rpf_addr.u.prefix4.s_addr != neigh_addr.s_addr) | |
1083 | continue; | |
1084 | ||
1085 | pim_upstream_join_timer_decrease_to_t_override( | |
1086 | "RPF'(S,G) GenID change", up); | |
1087 | } | |
12e41d03 DL |
1088 | } |
1089 | ||
1090 | ||
1091 | void pim_upstream_rpf_interface_changed(struct pim_upstream *up, | |
1092 | struct interface *old_rpf_ifp) | |
1093 | { | |
d62a17ae | 1094 | struct listnode *chnode; |
1095 | struct listnode *chnextnode; | |
1096 | struct pim_ifchannel *ch; | |
1097 | ||
1098 | /* search all ifchannels */ | |
1099 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
1100 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { | |
1101 | if ( | |
1102 | /* RPF_interface(S) was NOT I */ | |
1103 | (old_rpf_ifp == ch->interface) && | |
1104 | /* RPF_interface(S) stopped being I */ | |
1105 | (ch->upstream->rpf.source_nexthop | |
957d93ea SP |
1106 | .interface) && |
1107 | (ch->upstream->rpf.source_nexthop | |
1108 | .interface != ch->interface)) { | |
d62a17ae | 1109 | assert_action_a5(ch); |
1110 | } | |
1111 | } /* PIM_IFASSERT_I_AM_LOSER */ | |
1112 | ||
1113 | pim_ifchannel_update_assert_tracking_desired(ch); | |
1114 | } | |
12e41d03 DL |
1115 | } |
1116 | ||
1117 | void pim_upstream_update_could_assert(struct pim_upstream *up) | |
1118 | { | |
d62a17ae | 1119 | struct listnode *chnode; |
1120 | struct listnode *chnextnode; | |
1121 | struct pim_ifchannel *ch; | |
1122 | ||
1123 | /* scan per-interface (S,G) state */ | |
1124 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
1125 | pim_ifchannel_update_could_assert(ch); | |
1126 | } /* scan iface channel list */ | |
12e41d03 DL |
1127 | } |
1128 | ||
1129 | void pim_upstream_update_my_assert_metric(struct pim_upstream *up) | |
1130 | { | |
d62a17ae | 1131 | struct listnode *chnode; |
1132 | struct listnode *chnextnode; | |
1133 | struct pim_ifchannel *ch; | |
12e41d03 | 1134 | |
d62a17ae | 1135 | /* scan per-interface (S,G) state */ |
1136 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
1137 | pim_ifchannel_update_my_assert_metric(ch); | |
12e41d03 | 1138 | |
d62a17ae | 1139 | } /* scan iface channel list */ |
12e41d03 DL |
1140 | } |
1141 | ||
1142 | static void pim_upstream_update_assert_tracking_desired(struct pim_upstream *up) | |
1143 | { | |
d62a17ae | 1144 | struct listnode *chnode; |
1145 | struct listnode *chnextnode; | |
1146 | struct pim_interface *pim_ifp; | |
1147 | struct pim_ifchannel *ch; | |
1148 | ||
1149 | /* scan per-interface (S,G) state */ | |
1150 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
1151 | if (!ch->interface) | |
1152 | continue; | |
1153 | pim_ifp = ch->interface->info; | |
1154 | if (!pim_ifp) | |
1155 | continue; | |
1156 | ||
1157 | pim_ifchannel_update_assert_tracking_desired(ch); | |
1158 | ||
1159 | } /* scan iface channel list */ | |
12e41d03 | 1160 | } |
f14248dd | 1161 | |
1bf16443 | 1162 | /* When kat is stopped CouldRegister goes to false so we need to |
1163 | * transition the (S, G) on FHR to NI state and remove reg tunnel | |
1164 | * from the OIL */ | |
9b29ea95 DS |
1165 | static void pim_upstream_fhr_kat_expiry(struct pim_instance *pim, |
1166 | struct pim_upstream *up) | |
1bf16443 | 1167 | { |
d62a17ae | 1168 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) |
1169 | return; | |
1170 | ||
23fc858a | 1171 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1172 | zlog_debug("kat expired on %s; clear fhr reg state", |
1173 | up->sg_str); | |
1174 | ||
1175 | /* stop reg-stop timer */ | |
1176 | THREAD_OFF(up->t_rs_timer); | |
1177 | /* remove regiface from the OIL if it is there*/ | |
9b29ea95 | 1178 | pim_channel_del_oif(up->channel_oil, pim->regiface, |
1b249e70 | 1179 | PIM_OIF_FLAG_PROTO_PIM, __func__); |
d62a17ae | 1180 | /* clear the register state */ |
1181 | up->reg_state = PIM_REG_NOINFO; | |
1182 | PIM_UPSTREAM_FLAG_UNSET_FHR(up->flags); | |
1bf16443 | 1183 | } |
1184 | ||
1185 | /* When kat is started CouldRegister can go to true. And if it does we | |
1186 | * need to transition the (S, G) on FHR to JOINED state and add reg tunnel | |
1187 | * to the OIL */ | |
1188 | static void pim_upstream_fhr_kat_start(struct pim_upstream *up) | |
1189 | { | |
d62a17ae | 1190 | if (pim_upstream_could_register(up)) { |
23fc858a | 1191 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1192 | zlog_debug( |
1193 | "kat started on %s; set fhr reg state to joined", | |
1194 | up->sg_str); | |
1195 | ||
1196 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); | |
1197 | if (up->reg_state == PIM_REG_NOINFO) | |
1198 | pim_register_join(up); | |
69e3538c | 1199 | pim_upstream_update_use_rpt(up, true /*update_mroute*/); |
d62a17ae | 1200 | } |
1bf16443 | 1201 | } |
1202 | ||
f14248dd DS |
1203 | /* |
1204 | * On an RP, the PMBR value must be cleared when the | |
1205 | * Keepalive Timer expires | |
1bf16443 | 1206 | * KAT expiry indicates that flow is inactive. If the flow was created or |
1207 | * maintained by activity now is the time to deref it. | |
f14248dd | 1208 | */ |
ff459c36 AK |
1209 | struct pim_upstream *pim_upstream_keep_alive_timer_proc( |
1210 | struct pim_upstream *up) | |
f14248dd | 1211 | { |
8e5f97e3 | 1212 | struct pim_instance *pim; |
d62a17ae | 1213 | |
8e5f97e3 | 1214 | pim = up->channel_oil->pim; |
d62a17ae | 1215 | |
820b4a40 AK |
1216 | if (PIM_UPSTREAM_FLAG_TEST_DISABLE_KAT_EXPIRY(up->flags)) { |
1217 | /* if the router is a PIM vxlan encapsulator we prevent expiry | |
1218 | * of KAT as the mroute is pre-setup without any traffic | |
1219 | */ | |
1220 | pim_upstream_keep_alive_timer_start(up, pim->keep_alive_time); | |
ff459c36 | 1221 | return up; |
820b4a40 AK |
1222 | } |
1223 | ||
8e5f97e3 | 1224 | if (I_am_RP(pim, up->sg.grp)) { |
d62a17ae | 1225 | pim_br_clear_pmbr(&up->sg); |
1226 | /* | |
1227 | * We need to do more here :) | |
1228 | * But this is the start. | |
1229 | */ | |
1230 | } | |
1231 | ||
1232 | /* source is no longer active - pull the SA from MSDP's cache */ | |
472ad383 | 1233 | pim_msdp_sa_local_del(pim, &up->sg); |
d62a17ae | 1234 | |
1235 | /* if entry was created because of activity we need to deref it */ | |
1236 | if (PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) { | |
8e5f97e3 | 1237 | pim_upstream_fhr_kat_expiry(pim, up); |
23fc858a | 1238 | if (PIM_DEBUG_PIM_TRACE) |
996c9314 LB |
1239 | zlog_debug( |
1240 | "kat expired on %s[%s]; remove stream reference", | |
1241 | up->sg_str, pim->vrf->name); | |
d62a17ae | 1242 | PIM_UPSTREAM_FLAG_UNSET_SRC_STREAM(up->flags); |
e3e532dd | 1243 | |
1244 | /* Return if upstream entry got deleted.*/ | |
1245 | if (!pim_upstream_del(pim, up, __PRETTY_FUNCTION__)) | |
1246 | return NULL; | |
1247 | } | |
02434c43 DS |
1248 | if (PIM_UPSTREAM_FLAG_TEST_SRC_NOCACHE(up->flags)) { |
1249 | PIM_UPSTREAM_FLAG_UNSET_SRC_NOCACHE(up->flags); | |
1250 | ||
1251 | if (!pim_upstream_del(pim, up, __PRETTY_FUNCTION__)) | |
1252 | return NULL; | |
1253 | } | |
1254 | ||
e3e532dd | 1255 | /* upstream reference would have been added to track the local |
1256 | * membership if it is LHR. We have to clear it when KAT expires. | |
1257 | * Otherwise would result in stale entry with uncleared ref count. | |
1258 | */ | |
1259 | if (PIM_UPSTREAM_FLAG_TEST_SRC_LHR(up->flags)) { | |
8022df6a DS |
1260 | struct pim_upstream *parent = up->parent; |
1261 | ||
d62a17ae | 1262 | PIM_UPSTREAM_FLAG_UNSET_SRC_LHR(up->flags); |
ff459c36 | 1263 | up = pim_upstream_del(pim, up, __PRETTY_FUNCTION__); |
8022df6a DS |
1264 | |
1265 | if (parent) { | |
996c9314 LB |
1266 | pim_jp_agg_single_upstream_send(&parent->rpf, parent, |
1267 | true); | |
8022df6a | 1268 | } |
d62a17ae | 1269 | } |
1270 | ||
ff459c36 AK |
1271 | return up; |
1272 | } | |
1273 | static int pim_upstream_keep_alive_timer(struct thread *t) | |
1274 | { | |
1275 | struct pim_upstream *up; | |
1276 | ||
1277 | up = THREAD_ARG(t); | |
1278 | ||
1279 | pim_upstream_keep_alive_timer_proc(up); | |
d62a17ae | 1280 | return 0; |
f14248dd DS |
1281 | } |
1282 | ||
d62a17ae | 1283 | void pim_upstream_keep_alive_timer_start(struct pim_upstream *up, uint32_t time) |
f14248dd | 1284 | { |
d62a17ae | 1285 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) { |
23fc858a | 1286 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1287 | zlog_debug("kat start on %s with no stream reference", |
1288 | up->sg_str); | |
1289 | } | |
1290 | THREAD_OFF(up->t_ka_timer); | |
36417fcc DS |
1291 | thread_add_timer(router->master, pim_upstream_keep_alive_timer, up, |
1292 | time, &up->t_ka_timer); | |
d62a17ae | 1293 | |
1294 | /* any time keepalive is started against a SG we will have to | |
1295 | * re-evaluate our active source database */ | |
1296 | pim_msdp_sa_local_update(up); | |
1bf16443 | 1297 | } |
1298 | ||
1299 | /* MSDP on RP needs to know if a source is registerable to this RP */ | |
d62a17ae | 1300 | static int pim_upstream_msdp_reg_timer(struct thread *t) |
1bf16443 | 1301 | { |
472ad383 DS |
1302 | struct pim_upstream *up = THREAD_ARG(t); |
1303 | struct pim_instance *pim = up->channel_oil->pim; | |
1bf16443 | 1304 | |
d62a17ae | 1305 | /* source is no longer active - pull the SA from MSDP's cache */ |
472ad383 | 1306 | pim_msdp_sa_local_del(pim, &up->sg); |
d62a17ae | 1307 | return 1; |
1bf16443 | 1308 | } |
d62a17ae | 1309 | void pim_upstream_msdp_reg_timer_start(struct pim_upstream *up) |
1bf16443 | 1310 | { |
d62a17ae | 1311 | THREAD_OFF(up->t_msdp_reg_timer); |
36417fcc | 1312 | thread_add_timer(router->master, pim_upstream_msdp_reg_timer, up, |
d62a17ae | 1313 | PIM_MSDP_REG_RXED_PERIOD, &up->t_msdp_reg_timer); |
1bf16443 | 1314 | |
d62a17ae | 1315 | pim_msdp_sa_local_update(up); |
f14248dd | 1316 | } |
cb40b272 DS |
1317 | |
1318 | /* | |
1319 | * 4.2.1 Last-Hop Switchover to the SPT | |
1320 | * | |
1321 | * In Sparse-Mode PIM, last-hop routers join the shared tree towards the | |
1322 | * RP. Once traffic from sources to joined groups arrives at a last-hop | |
1323 | * router, it has the option of switching to receive the traffic on a | |
1324 | * shortest path tree (SPT). | |
1325 | * | |
1326 | * The decision for a router to switch to the SPT is controlled as | |
1327 | * follows: | |
1328 | * | |
1329 | * void | |
1330 | * CheckSwitchToSpt(S,G) { | |
1331 | * if ( ( pim_include(*,G) (-) pim_exclude(S,G) | |
1332 | * (+) pim_include(S,G) != NULL ) | |
1333 | * AND SwitchToSptDesired(S,G) ) { | |
1334 | * # Note: Restarting the KAT will result in the SPT switch | |
1335 | * set KeepaliveTimer(S,G) to Keepalive_Period | |
1336 | * } | |
1337 | * } | |
1338 | * | |
1339 | * SwitchToSptDesired(S,G) is a policy function that is implementation | |
1340 | * defined. An "infinite threshold" policy can be implemented by making | |
1341 | * SwitchToSptDesired(S,G) return false all the time. A "switch on | |
1342 | * first packet" policy can be implemented by making | |
1343 | * SwitchToSptDesired(S,G) return true once a single packet has been | |
1344 | * received for the source and group. | |
1345 | */ | |
8e5f97e3 DS |
1346 | int pim_upstream_switch_to_spt_desired(struct pim_instance *pim, |
1347 | struct prefix_sg *sg) | |
cb40b272 | 1348 | { |
8e5f97e3 | 1349 | if (I_am_RP(pim, sg->grp)) |
d62a17ae | 1350 | return 1; |
a3b58b4a | 1351 | |
d62a17ae | 1352 | return 0; |
cb40b272 | 1353 | } |
d7259eac | 1354 | |
d62a17ae | 1355 | int pim_upstream_is_sg_rpt(struct pim_upstream *up) |
80d9c3a0 | 1356 | { |
d62a17ae | 1357 | struct listnode *chnode; |
1358 | struct pim_ifchannel *ch; | |
f21597f0 | 1359 | |
d62a17ae | 1360 | for (ALL_LIST_ELEMENTS_RO(up->ifchannels, chnode, ch)) { |
1361 | if (PIM_IF_FLAG_TEST_S_G_RPT(ch->flags)) | |
1362 | return 1; | |
1363 | } | |
e43b8697 | 1364 | |
d62a17ae | 1365 | return 0; |
80d9c3a0 | 1366 | } |
3a66b17b DS |
1367 | /* |
1368 | * After receiving a packet set SPTbit: | |
1369 | * void | |
1370 | * Update_SPTbit(S,G,iif) { | |
1371 | * if ( iif == RPF_interface(S) | |
2951a7a4 QY |
1372 | * AND JoinDesired(S,G) == true |
1373 | * AND ( DirectlyConnected(S) == true | |
3a66b17b DS |
1374 | * OR RPF_interface(S) != RPF_interface(RP(G)) |
1375 | * OR inherited_olist(S,G,rpt) == NULL | |
1376 | * OR ( ( RPF'(S,G) == RPF'(*,G) ) AND | |
1377 | * ( RPF'(S,G) != NULL ) ) | |
1378 | * OR ( I_Am_Assert_Loser(S,G,iif) ) { | |
2951a7a4 | 1379 | * Set SPTbit(S,G) to true |
3a66b17b DS |
1380 | * } |
1381 | * } | |
1382 | */ | |
d62a17ae | 1383 | void pim_upstream_set_sptbit(struct pim_upstream *up, |
1384 | struct interface *incoming) | |
3a66b17b | 1385 | { |
d62a17ae | 1386 | struct pim_upstream *starup = up->parent; |
1387 | ||
1388 | // iif == RPF_interfvace(S) | |
1389 | if (up->rpf.source_nexthop.interface != incoming) { | |
23fc858a | 1390 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1391 | zlog_debug( |
1392 | "%s: Incoming Interface: %s is different than RPF_interface(S) %s", | |
1393 | __PRETTY_FUNCTION__, incoming->name, | |
1394 | up->rpf.source_nexthop.interface->name); | |
1395 | return; | |
1396 | } | |
1397 | ||
2951a7a4 | 1398 | // AND JoinDesired(S,G) == true |
6f0f014f | 1399 | if (!pim_upstream_evaluate_join_desired(up->channel_oil->pim, up)) { |
23fc858a | 1400 | if (PIM_DEBUG_PIM_TRACE) |
6f0f014f DS |
1401 | zlog_debug("%s: %s Join is not Desired", |
1402 | __PRETTY_FUNCTION__, up->sg_str); | |
1403 | return; | |
1404 | } | |
d62a17ae | 1405 | |
2951a7a4 | 1406 | // DirectlyConnected(S) == true |
d62a17ae | 1407 | if (pim_if_connected_to_source(up->rpf.source_nexthop.interface, |
1408 | up->sg.src)) { | |
23fc858a | 1409 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1410 | zlog_debug("%s: %s is directly connected to the source", |
1411 | __PRETTY_FUNCTION__, up->sg_str); | |
1412 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
1413 | return; | |
1414 | } | |
1415 | ||
1416 | // OR RPF_interface(S) != RPF_interface(RP(G)) | |
1417 | if (!starup | |
1418 | || up->rpf.source_nexthop | |
1419 | .interface != starup->rpf.source_nexthop.interface) { | |
2de05c60 DS |
1420 | struct pim_upstream *starup = up->parent; |
1421 | ||
23fc858a | 1422 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1423 | zlog_debug( |
1424 | "%s: %s RPF_interface(S) != RPF_interface(RP(G))", | |
1425 | __PRETTY_FUNCTION__, up->sg_str); | |
1426 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
2de05c60 DS |
1427 | |
1428 | pim_jp_agg_single_upstream_send(&starup->rpf, starup, true); | |
d62a17ae | 1429 | return; |
1430 | } | |
1431 | ||
1432 | // OR inherited_olist(S,G,rpt) == NULL | |
1433 | if (pim_upstream_is_sg_rpt(up) | |
1434 | && pim_upstream_empty_inherited_olist(up)) { | |
23fc858a | 1435 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1436 | zlog_debug("%s: %s OR inherited_olist(S,G,rpt) == NULL", |
1437 | __PRETTY_FUNCTION__, up->sg_str); | |
1438 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
1439 | return; | |
1440 | } | |
1441 | ||
1442 | // OR ( ( RPF'(S,G) == RPF'(*,G) ) AND | |
1443 | // ( RPF'(S,G) != NULL ) ) | |
1444 | if (up->parent && pim_rpf_is_same(&up->rpf, &up->parent->rpf)) { | |
23fc858a | 1445 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1446 | zlog_debug("%s: %s RPF'(S,G) is the same as RPF'(*,G)", |
1447 | __PRETTY_FUNCTION__, up->sg_str); | |
1448 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
1449 | return; | |
1450 | } | |
1451 | ||
1452 | return; | |
3a66b17b | 1453 | } |
80d9c3a0 | 1454 | |
d62a17ae | 1455 | const char *pim_upstream_state2str(enum pim_upstream_state join_state) |
d7259eac | 1456 | { |
d62a17ae | 1457 | switch (join_state) { |
1458 | case PIM_UPSTREAM_NOTJOINED: | |
1459 | return "NotJoined"; | |
1460 | break; | |
1461 | case PIM_UPSTREAM_JOINED: | |
1462 | return "Joined"; | |
1463 | break; | |
1464 | } | |
1465 | return "Unknown"; | |
d7259eac | 1466 | } |
627ed2a3 | 1467 | |
c35b7e6b QY |
1468 | const char *pim_reg_state2str(enum pim_reg_state reg_state, char *state_str, |
1469 | size_t state_str_len) | |
e0e127b0 | 1470 | { |
d62a17ae | 1471 | switch (reg_state) { |
1472 | case PIM_REG_NOINFO: | |
c35b7e6b | 1473 | strlcpy(state_str, "RegNoInfo", state_str_len); |
d62a17ae | 1474 | break; |
1475 | case PIM_REG_JOIN: | |
c35b7e6b | 1476 | strlcpy(state_str, "RegJoined", state_str_len); |
d62a17ae | 1477 | break; |
1478 | case PIM_REG_JOIN_PENDING: | |
c35b7e6b | 1479 | strlcpy(state_str, "RegJoinPend", state_str_len); |
d62a17ae | 1480 | break; |
1481 | case PIM_REG_PRUNE: | |
c35b7e6b | 1482 | strlcpy(state_str, "RegPrune", state_str_len); |
d62a17ae | 1483 | break; |
1484 | default: | |
c35b7e6b | 1485 | strlcpy(state_str, "RegUnknown", state_str_len); |
d62a17ae | 1486 | } |
1487 | return state_str; | |
e0e127b0 | 1488 | } |
1489 | ||
d62a17ae | 1490 | static int pim_upstream_register_stop_timer(struct thread *t) |
627ed2a3 | 1491 | { |
d62a17ae | 1492 | struct pim_interface *pim_ifp; |
8e5f97e3 | 1493 | struct pim_instance *pim; |
d62a17ae | 1494 | struct pim_upstream *up; |
d62a17ae | 1495 | up = THREAD_ARG(t); |
8e5f97e3 | 1496 | pim = up->channel_oil->pim; |
d62a17ae | 1497 | |
23fc858a | 1498 | if (PIM_DEBUG_PIM_TRACE) { |
d62a17ae | 1499 | char state_str[PIM_REG_STATE_STR_LEN]; |
8dbdb215 DS |
1500 | zlog_debug("%s: (S,G)=%s[%s] upstream register stop timer %s", |
1501 | __PRETTY_FUNCTION__, up->sg_str, pim->vrf->name, | |
c35b7e6b | 1502 | pim_reg_state2str(up->reg_state, state_str, sizeof(state_str))); |
d62a17ae | 1503 | } |
1504 | ||
1505 | switch (up->reg_state) { | |
1506 | case PIM_REG_JOIN_PENDING: | |
1507 | up->reg_state = PIM_REG_JOIN; | |
8e5f97e3 | 1508 | pim_channel_add_oif(up->channel_oil, pim->regiface, |
1b249e70 AK |
1509 | PIM_OIF_FLAG_PROTO_PIM, |
1510 | __func__); | |
2951a7a4 | 1511 | pim_vxlan_update_sg_reg_state(pim, up, true /*reg_join*/); |
d62a17ae | 1512 | break; |
1513 | case PIM_REG_JOIN: | |
1514 | break; | |
1515 | case PIM_REG_PRUNE: | |
957d93ea | 1516 | if (!up->rpf.source_nexthop.interface) { |
23fc858a | 1517 | if (PIM_DEBUG_PIM_TRACE) |
957d93ea SP |
1518 | zlog_debug("%s: up %s RPF is not present", |
1519 | __PRETTY_FUNCTION__, up->sg_str); | |
1520 | return 0; | |
1521 | } | |
1522 | ||
d62a17ae | 1523 | pim_ifp = up->rpf.source_nexthop.interface->info; |
1524 | if (!pim_ifp) { | |
23fc858a | 1525 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1526 | zlog_debug( |
1527 | "%s: Interface: %s is not configured for pim", | |
1528 | __PRETTY_FUNCTION__, | |
1529 | up->rpf.source_nexthop.interface->name); | |
1530 | return 0; | |
1531 | } | |
1532 | up->reg_state = PIM_REG_JOIN_PENDING; | |
1533 | pim_upstream_start_register_stop_timer(up, 1); | |
1534 | ||
1535 | if (((up->channel_oil->cc.lastused / 100) | |
2f5b0028 | 1536 | > pim->keep_alive_time) |
d9c9a9ee | 1537 | && (I_am_RP(pim_ifp->pim, up->sg.grp))) { |
23fc858a | 1538 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1539 | zlog_debug( |
1540 | "%s: Stop sending the register, because I am the RP and we haven't seen a packet in a while", | |
1541 | __PRETTY_FUNCTION__); | |
1542 | return 0; | |
1543 | } | |
aea1f845 | 1544 | pim_null_register_send(up); |
d62a17ae | 1545 | break; |
1546 | default: | |
1547 | break; | |
70e7fda8 | 1548 | } |
d62a17ae | 1549 | |
1550 | return 0; | |
627ed2a3 DS |
1551 | } |
1552 | ||
d62a17ae | 1553 | void pim_upstream_start_register_stop_timer(struct pim_upstream *up, |
1554 | int null_register) | |
627ed2a3 | 1555 | { |
d62a17ae | 1556 | uint32_t time; |
1557 | ||
1558 | THREAD_TIMER_OFF(up->t_rs_timer); | |
1559 | ||
1560 | if (!null_register) { | |
1561 | uint32_t lower = (0.5 * PIM_REGISTER_SUPPRESSION_PERIOD); | |
1562 | uint32_t upper = (1.5 * PIM_REGISTER_SUPPRESSION_PERIOD); | |
1563 | time = lower + (random() % (upper - lower + 1)) | |
1564 | - PIM_REGISTER_PROBE_PERIOD; | |
1565 | } else | |
1566 | time = PIM_REGISTER_PROBE_PERIOD; | |
1567 | ||
23fc858a | 1568 | if (PIM_DEBUG_PIM_TRACE) { |
d62a17ae | 1569 | zlog_debug( |
1570 | "%s: (S,G)=%s Starting upstream register stop timer %d", | |
1571 | __PRETTY_FUNCTION__, up->sg_str, time); | |
1572 | } | |
36417fcc DS |
1573 | thread_add_timer(router->master, pim_upstream_register_stop_timer, up, |
1574 | time, &up->t_rs_timer); | |
627ed2a3 | 1575 | } |
4fdc8f36 | 1576 | |
9b29ea95 DS |
1577 | int pim_upstream_inherited_olist_decide(struct pim_instance *pim, |
1578 | struct pim_upstream *up) | |
4fdc8f36 | 1579 | { |
d62a17ae | 1580 | struct interface *ifp; |
d62a17ae | 1581 | struct pim_ifchannel *ch, *starch; |
d62a17ae | 1582 | struct pim_upstream *starup = up->parent; |
1583 | int output_intf = 0; | |
1584 | ||
46dd6edb | 1585 | if (!up->rpf.source_nexthop.interface) |
23fc858a | 1586 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1587 | zlog_debug("%s: up %s RPF is not present", |
1588 | __PRETTY_FUNCTION__, up->sg_str); | |
d62a17ae | 1589 | |
451fda4f | 1590 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 1591 | if (!ifp->info) |
1592 | continue; | |
1593 | ||
1594 | ch = pim_ifchannel_find(ifp, &up->sg); | |
1595 | ||
1596 | if (starup) | |
1597 | starch = pim_ifchannel_find(ifp, &starup->sg); | |
1598 | else | |
1599 | starch = NULL; | |
1600 | ||
1601 | if (!ch && !starch) | |
1602 | continue; | |
1603 | ||
1604 | if (pim_upstream_evaluate_join_desired_interface(up, ch, | |
1605 | starch)) { | |
1606 | int flag = PIM_OIF_FLAG_PROTO_PIM; | |
1607 | ||
1608 | if (!ch) | |
1609 | flag = PIM_OIF_FLAG_PROTO_STAR; | |
1610 | ||
1b249e70 AK |
1611 | pim_channel_add_oif(up->channel_oil, ifp, flag, |
1612 | __func__); | |
d62a17ae | 1613 | output_intf++; |
1614 | } | |
1615 | } | |
1616 | ||
1617 | return output_intf; | |
b5183fd1 DS |
1618 | } |
1619 | ||
1620 | /* | |
1621 | * For a given upstream, determine the inherited_olist | |
1622 | * and apply it. | |
1623 | * | |
1624 | * inherited_olist(S,G,rpt) = | |
1625 | * ( joins(*,*,RP(G)) (+) joins(*,G) (-) prunes(S,G,rpt) ) | |
1626 | * (+) ( pim_include(*,G) (-) pim_exclude(S,G)) | |
1627 | * (-) ( lost_assert(*,G) (+) lost_assert(S,G,rpt) ) | |
1628 | * | |
1629 | * inherited_olist(S,G) = | |
1630 | * inherited_olist(S,G,rpt) (+) | |
1631 | * joins(S,G) (+) pim_include(S,G) (-) lost_assert(S,G) | |
1632 | * | |
1633 | * return 1 if there are any output interfaces | |
1634 | * return 0 if there are not any output interfaces | |
1635 | */ | |
9b29ea95 DS |
1636 | int pim_upstream_inherited_olist(struct pim_instance *pim, |
1637 | struct pim_upstream *up) | |
b5183fd1 | 1638 | { |
9b29ea95 | 1639 | int output_intf = pim_upstream_inherited_olist_decide(pim, up); |
d62a17ae | 1640 | |
1641 | /* | |
1642 | * If we have output_intf switch state to Join and work like normal | |
1643 | * If we don't have an output_intf that means we are probably a | |
1644 | * switch on a stick so turn on forwarding to just accept the | |
1645 | * incoming packets so we don't bother the other stuff! | |
1646 | */ | |
1647 | if (output_intf) | |
1eca8576 | 1648 | pim_upstream_switch(pim, up, PIM_UPSTREAM_JOINED); |
d62a17ae | 1649 | else |
1650 | forward_on(up); | |
1651 | ||
1652 | return output_intf; | |
4fdc8f36 | 1653 | } |
d3dd1804 | 1654 | |
d62a17ae | 1655 | int pim_upstream_empty_inherited_olist(struct pim_upstream *up) |
80d9c3a0 | 1656 | { |
d62a17ae | 1657 | return pim_channel_oil_empty(up->channel_oil); |
80d9c3a0 DS |
1658 | } |
1659 | ||
d3dd1804 DS |
1660 | /* |
1661 | * When we have a new neighbor, | |
1662 | * find upstreams that don't have their rpf_addr | |
1663 | * set and see if the new neighbor allows | |
1664 | * the join to be sent | |
1665 | */ | |
9b29ea95 | 1666 | void pim_upstream_find_new_rpf(struct pim_instance *pim) |
d3dd1804 | 1667 | { |
d62a17ae | 1668 | struct listnode *up_node; |
1669 | struct listnode *up_nextnode; | |
1670 | struct pim_upstream *up; | |
1671 | ||
1672 | /* | |
1673 | * Scan all (S,G) upstreams searching for RPF'(S,G)=neigh_addr | |
1674 | */ | |
9b29ea95 | 1675 | for (ALL_LIST_ELEMENTS(pim->upstream_list, up_node, up_nextnode, up)) { |
957d93ea | 1676 | if (up->upstream_addr.s_addr == INADDR_ANY) { |
23fc858a | 1677 | if (PIM_DEBUG_PIM_TRACE) |
957d93ea SP |
1678 | zlog_debug( |
1679 | "%s: RP not configured for Upstream %s", | |
1680 | __PRETTY_FUNCTION__, up->sg_str); | |
1681 | continue; | |
1682 | } | |
1683 | ||
d62a17ae | 1684 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) { |
23fc858a | 1685 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1686 | zlog_debug( |
957d93ea SP |
1687 | "%s: Upstream %s without a path to send join, checking", |
1688 | __PRETTY_FUNCTION__, up->sg_str); | |
ae14da48 | 1689 | pim_rpf_update(pim, up, NULL); |
d62a17ae | 1690 | } |
d3dd1804 | 1691 | } |
d3dd1804 | 1692 | } |
0f588989 | 1693 | |
d8b87afe | 1694 | unsigned int pim_upstream_hash_key(const void *arg) |
0f588989 | 1695 | { |
d8b87afe | 1696 | const struct pim_upstream *up = arg; |
0f588989 | 1697 | |
d62a17ae | 1698 | return jhash_2words(up->sg.src.s_addr, up->sg.grp.s_addr, 0); |
0f588989 DS |
1699 | } |
1700 | ||
9b29ea95 | 1701 | void pim_upstream_terminate(struct pim_instance *pim) |
0f588989 | 1702 | { |
172e45dc DS |
1703 | struct pim_upstream *up; |
1704 | ||
1705 | if (pim->upstream_list) { | |
1d483838 DS |
1706 | while (pim->upstream_list->count) { |
1707 | up = listnode_head(pim->upstream_list); | |
172e45dc | 1708 | pim_upstream_del(pim, up, __PRETTY_FUNCTION__); |
1d483838 | 1709 | } |
172e45dc | 1710 | |
6a154c88 | 1711 | list_delete(&pim->upstream_list); |
172e45dc | 1712 | } |
0f588989 | 1713 | |
9b29ea95 DS |
1714 | if (pim->upstream_hash) |
1715 | hash_free(pim->upstream_hash); | |
1716 | pim->upstream_hash = NULL; | |
0c68972d DS |
1717 | |
1718 | if (pim->upstream_sg_wheel) | |
1719 | wheel_delete(pim->upstream_sg_wheel); | |
1720 | pim->upstream_sg_wheel = NULL; | |
0f588989 DS |
1721 | } |
1722 | ||
74df8d6d | 1723 | bool pim_upstream_equal(const void *arg1, const void *arg2) |
0f588989 | 1724 | { |
d62a17ae | 1725 | const struct pim_upstream *up1 = (const struct pim_upstream *)arg1; |
1726 | const struct pim_upstream *up2 = (const struct pim_upstream *)arg2; | |
0f588989 | 1727 | |
d62a17ae | 1728 | if ((up1->sg.grp.s_addr == up2->sg.grp.s_addr) |
1729 | && (up1->sg.src.s_addr == up2->sg.src.s_addr)) | |
74df8d6d | 1730 | return true; |
0f588989 | 1731 | |
74df8d6d | 1732 | return false; |
0f588989 DS |
1733 | } |
1734 | ||
1bf16443 | 1735 | /* rfc4601:section-4.2:"Data Packet Forwarding Rules" defines |
1736 | * the cases where kat has to be restarted on rxing traffic - | |
1737 | * | |
2951a7a4 | 1738 | * if( DirectlyConnected(S) == true AND iif == RPF_interface(S) ) { |
1bf16443 | 1739 | * set KeepaliveTimer(S,G) to Keepalive_Period |
1740 | * # Note: a register state transition or UpstreamJPState(S,G) | |
1741 | * # transition may happen as a result of restarting | |
1742 | * # KeepaliveTimer, and must be dealt with here. | |
1743 | * } | |
1744 | * if( iif == RPF_interface(S) AND UpstreamJPState(S,G) == Joined AND | |
1745 | * inherited_olist(S,G) != NULL ) { | |
1746 | * set KeepaliveTimer(S,G) to Keepalive_Period | |
1747 | * } | |
1748 | */ | |
1749 | static bool pim_upstream_kat_start_ok(struct pim_upstream *up) | |
1750 | { | |
8e5f97e3 DS |
1751 | struct pim_instance *pim = up->channel_oil->pim; |
1752 | ||
d62a17ae | 1753 | /* "iif == RPF_interface(S)" check has to be done by the kernel or hw |
1754 | * so we will skip that here */ | |
957d93ea SP |
1755 | if (up->rpf.source_nexthop.interface && |
1756 | pim_if_connected_to_source(up->rpf.source_nexthop.interface, | |
d62a17ae | 1757 | up->sg.src)) { |
1758 | return true; | |
1759 | } | |
1760 | ||
1761 | if ((up->join_state == PIM_UPSTREAM_JOINED) | |
1762 | && !pim_upstream_empty_inherited_olist(up)) { | |
1763 | /* XXX: I have added this RP check just for 3.2 and it's a | |
1764 | * digression from | |
1765 | * what rfc-4601 says. Till now we were only running KAT on FHR | |
1766 | * and RP and | |
1767 | * there is some angst around making the change to run it all | |
1768 | * routers that | |
1769 | * maintain the (S, G) state. This is tracked via CM-13601 and | |
1770 | * MUST be | |
1771 | * removed to handle spt turn-arounds correctly in a 3-tier clos | |
1772 | */ | |
8e5f97e3 | 1773 | if (I_am_RP(pim, up->sg.grp)) |
d62a17ae | 1774 | return true; |
1775 | } | |
1776 | ||
1777 | return false; | |
1bf16443 | 1778 | } |
1779 | ||
9c5e4d62 DS |
1780 | /* |
1781 | * Code to check and see if we've received packets on a S,G mroute | |
1782 | * and if so to set the SPT bit appropriately | |
1783 | */ | |
d62a17ae | 1784 | static void pim_upstream_sg_running(void *arg) |
9c5e4d62 | 1785 | { |
d62a17ae | 1786 | struct pim_upstream *up = (struct pim_upstream *)arg; |
8e5f97e3 | 1787 | struct pim_instance *pim = up->channel_oil->pim; |
d62a17ae | 1788 | |
1789 | // No packet can have arrived here if this is the case | |
8e5f97e3 | 1790 | if (!up->channel_oil->installed) { |
23fc858a | 1791 | if (PIM_DEBUG_PIM_TRACE) |
41714081 | 1792 | zlog_debug("%s: %s%s is not installed in mroute", |
996c9314 LB |
1793 | __PRETTY_FUNCTION__, up->sg_str, |
1794 | pim->vrf->name); | |
d62a17ae | 1795 | return; |
1796 | } | |
1797 | ||
1798 | /* | |
1799 | * This is a bit of a hack | |
1800 | * We've noted that we should rescan but | |
1801 | * we've missed the window for doing so in | |
1802 | * pim_zebra.c for some reason. I am | |
1803 | * only doing this at this point in time | |
1804 | * to get us up and working for the moment | |
1805 | */ | |
1806 | if (up->channel_oil->oil_inherited_rescan) { | |
23fc858a | 1807 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1808 | zlog_debug( |
8dbdb215 | 1809 | "%s: Handling unscanned inherited_olist for %s[%s]", |
996c9314 LB |
1810 | __PRETTY_FUNCTION__, up->sg_str, |
1811 | pim->vrf->name); | |
8e5f97e3 | 1812 | pim_upstream_inherited_olist_decide(pim, up); |
d62a17ae | 1813 | up->channel_oil->oil_inherited_rescan = 0; |
1814 | } | |
1815 | pim_mroute_update_counters(up->channel_oil); | |
1816 | ||
1817 | // Have we seen packets? | |
1818 | if ((up->channel_oil->cc.oldpktcnt >= up->channel_oil->cc.pktcnt) | |
1819 | && (up->channel_oil->cc.lastused / 100 > 30)) { | |
23fc858a | 1820 | if (PIM_DEBUG_PIM_TRACE) { |
d62a17ae | 1821 | zlog_debug( |
8dbdb215 DS |
1822 | "%s[%s]: %s old packet count is equal or lastused is greater than 30, (%ld,%ld,%lld)", |
1823 | __PRETTY_FUNCTION__, up->sg_str, pim->vrf->name, | |
d62a17ae | 1824 | up->channel_oil->cc.oldpktcnt, |
1825 | up->channel_oil->cc.pktcnt, | |
1826 | up->channel_oil->cc.lastused / 100); | |
1827 | } | |
1828 | return; | |
e43b8697 | 1829 | } |
d62a17ae | 1830 | |
1831 | if (pim_upstream_kat_start_ok(up)) { | |
1832 | /* Add a source reference to the stream if | |
1833 | * one doesn't already exist */ | |
1834 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) { | |
23fc858a | 1835 | if (PIM_DEBUG_PIM_TRACE) |
d62a17ae | 1836 | zlog_debug( |
8dbdb215 DS |
1837 | "source reference created on kat restart %s[%s]", |
1838 | up->sg_str, pim->vrf->name); | |
d62a17ae | 1839 | |
1840 | pim_upstream_ref(up, PIM_UPSTREAM_FLAG_MASK_SRC_STREAM, | |
1841 | __PRETTY_FUNCTION__); | |
1842 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); | |
1843 | pim_upstream_fhr_kat_start(up); | |
1844 | } | |
19b807ca | 1845 | pim_upstream_keep_alive_timer_start(up, pim->keep_alive_time); |
d62a17ae | 1846 | } else if (PIM_UPSTREAM_FLAG_TEST_SRC_LHR(up->flags)) |
19b807ca | 1847 | pim_upstream_keep_alive_timer_start(up, pim->keep_alive_time); |
d62a17ae | 1848 | |
957d93ea SP |
1849 | if ((up->sptbit != PIM_UPSTREAM_SPTBIT_TRUE) && |
1850 | (up->rpf.source_nexthop.interface)) { | |
d62a17ae | 1851 | pim_upstream_set_sptbit(up, up->rpf.source_nexthop.interface); |
850a9f99 | 1852 | } |
d62a17ae | 1853 | return; |
9c5e4d62 DS |
1854 | } |
1855 | ||
9b29ea95 | 1856 | void pim_upstream_add_lhr_star_pimreg(struct pim_instance *pim) |
a7b2b1e2 | 1857 | { |
d62a17ae | 1858 | struct pim_upstream *up; |
1859 | struct listnode *node; | |
a7b2b1e2 | 1860 | |
9b29ea95 | 1861 | for (ALL_LIST_ELEMENTS_RO(pim->upstream_list, node, up)) { |
d62a17ae | 1862 | if (up->sg.src.s_addr != INADDR_ANY) |
1863 | continue; | |
a7b2b1e2 | 1864 | |
d62a17ae | 1865 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(up->flags)) |
1866 | continue; | |
a7b2b1e2 | 1867 | |
9b29ea95 | 1868 | pim_channel_add_oif(up->channel_oil, pim->regiface, |
1b249e70 | 1869 | PIM_OIF_FLAG_PROTO_IGMP, __func__); |
d62a17ae | 1870 | } |
a7b2b1e2 DS |
1871 | } |
1872 | ||
9b29ea95 DS |
1873 | void pim_upstream_spt_prefix_list_update(struct pim_instance *pim, |
1874 | struct prefix_list *pl) | |
df94f9a9 | 1875 | { |
d62a17ae | 1876 | const char *pname = prefix_list_name(pl); |
df94f9a9 | 1877 | |
9b29ea95 DS |
1878 | if (pim->spt.plist && strcmp(pim->spt.plist, pname) == 0) { |
1879 | pim_upstream_remove_lhr_star_pimreg(pim, pname); | |
d62a17ae | 1880 | } |
df94f9a9 DS |
1881 | } |
1882 | ||
1883 | /* | |
1884 | * nlist -> The new prefix list | |
1885 | * | |
1886 | * Per Group Application of pimreg to the OIL | |
1887 | * If the prefix list tells us DENY then | |
1888 | * we need to Switchover to SPT immediate | |
1889 | * so add the pimreg. | |
1890 | * If the prefix list tells us to ACCEPT than | |
1891 | * we need to Never do the SPT so remove | |
1892 | * the interface | |
1893 | * | |
1894 | */ | |
9b29ea95 DS |
1895 | void pim_upstream_remove_lhr_star_pimreg(struct pim_instance *pim, |
1896 | const char *nlist) | |
a7b2b1e2 | 1897 | { |
d62a17ae | 1898 | struct pim_upstream *up; |
1899 | struct listnode *node; | |
1900 | struct prefix_list *np; | |
1901 | struct prefix g; | |
1902 | enum prefix_list_type apply_new; | |
1903 | ||
1904 | np = prefix_list_lookup(AFI_IP, nlist); | |
1905 | ||
1906 | g.family = AF_INET; | |
1907 | g.prefixlen = IPV4_MAX_PREFIXLEN; | |
1908 | ||
9b29ea95 | 1909 | for (ALL_LIST_ELEMENTS_RO(pim->upstream_list, node, up)) { |
d62a17ae | 1910 | if (up->sg.src.s_addr != INADDR_ANY) |
1911 | continue; | |
1912 | ||
1913 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(up->flags)) | |
1914 | continue; | |
1915 | ||
1916 | if (!nlist) { | |
9b29ea95 | 1917 | pim_channel_del_oif(up->channel_oil, pim->regiface, |
1b249e70 | 1918 | PIM_OIF_FLAG_PROTO_IGMP, __func__); |
d62a17ae | 1919 | continue; |
1920 | } | |
1921 | g.u.prefix4 = up->sg.grp; | |
1922 | apply_new = prefix_list_apply(np, &g); | |
1923 | if (apply_new == PREFIX_DENY) | |
9b29ea95 | 1924 | pim_channel_add_oif(up->channel_oil, pim->regiface, |
1b249e70 AK |
1925 | PIM_OIF_FLAG_PROTO_IGMP, |
1926 | __func__); | |
d62a17ae | 1927 | else |
9b29ea95 | 1928 | pim_channel_del_oif(up->channel_oil, pim->regiface, |
1b249e70 | 1929 | PIM_OIF_FLAG_PROTO_IGMP, __func__); |
d62a17ae | 1930 | } |
a7b2b1e2 DS |
1931 | } |
1932 | ||
9b29ea95 | 1933 | void pim_upstream_init(struct pim_instance *pim) |
0f588989 | 1934 | { |
c2cfa843 | 1935 | char name[64]; |
9fb302f4 | 1936 | |
c2cfa843 DS |
1937 | snprintf(name, 64, "PIM %s Timer Wheel", |
1938 | pim->vrf->name); | |
9b29ea95 | 1939 | pim->upstream_sg_wheel = |
36417fcc | 1940 | wheel_init(router->master, 31000, 100, pim_upstream_hash_key, |
c2cfa843 | 1941 | pim_upstream_sg_running, name); |
9fb302f4 | 1942 | |
c2cfa843 DS |
1943 | snprintf(name, 64, "PIM %s Upstream Hash", |
1944 | pim->vrf->name); | |
9b29ea95 | 1945 | pim->upstream_hash = hash_create_size(8192, pim_upstream_hash_key, |
c2cfa843 | 1946 | pim_upstream_equal, name); |
d62a17ae | 1947 | |
9b29ea95 | 1948 | pim->upstream_list = list_new(); |
9b29ea95 | 1949 | pim->upstream_list->cmp = pim_upstream_compare; |
0f588989 | 1950 | } |