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Commit | Line | Data |
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12e41d03 | 1 | /* |
896014f4 DL |
2 | * PIM for Quagga |
3 | * Copyright (C) 2008 Everton da Silva Marques | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; see the file COPYING; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
12e41d03 DL |
19 | |
20 | #include <zebra.h> | |
21 | ||
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" |
12e41d03 | 54 | |
982bff89 | 55 | static void join_timer_stop(struct pim_upstream *up); |
d62a17ae | 56 | static void |
57 | pim_upstream_update_assert_tracking_desired(struct pim_upstream *up); | |
12e41d03 | 58 | |
cfa91a87 DS |
59 | /* |
60 | * A (*,G) or a (*,*) is going away | |
61 | * remove the parent pointer from | |
62 | * those pointing at us | |
63 | */ | |
9b29ea95 DS |
64 | static void pim_upstream_remove_children(struct pim_instance *pim, |
65 | struct pim_upstream *up) | |
cfa91a87 | 66 | { |
d62a17ae | 67 | struct pim_upstream *child; |
68 | ||
69 | if (!up->sources) | |
70 | return; | |
71 | ||
72 | while (!list_isempty(up->sources)) { | |
73 | child = listnode_head(up->sources); | |
74 | listnode_delete(up->sources, child); | |
75 | if (PIM_UPSTREAM_FLAG_TEST_SRC_LHR(child->flags)) { | |
76 | PIM_UPSTREAM_FLAG_UNSET_SRC_LHR(child->flags); | |
9b29ea95 DS |
77 | child = pim_upstream_del(pim, child, |
78 | __PRETTY_FUNCTION__); | |
d62a17ae | 79 | } |
80 | if (child) | |
81 | child->parent = NULL; | |
82 | } | |
6a154c88 | 83 | list_delete(&up->sources); |
cfa91a87 DS |
84 | } |
85 | ||
86 | /* | |
87 | * A (*,G) or a (*,*) is being created | |
88 | * Find the children that would point | |
89 | * at us. | |
90 | */ | |
9b29ea95 DS |
91 | static void pim_upstream_find_new_children(struct pim_instance *pim, |
92 | struct pim_upstream *up) | |
cfa91a87 | 93 | { |
d62a17ae | 94 | struct pim_upstream *child; |
95 | struct listnode *ch_node; | |
96 | ||
97 | if ((up->sg.src.s_addr != INADDR_ANY) | |
98 | && (up->sg.grp.s_addr != INADDR_ANY)) | |
99 | return; | |
100 | ||
101 | if ((up->sg.src.s_addr == INADDR_ANY) | |
102 | && (up->sg.grp.s_addr == INADDR_ANY)) | |
103 | return; | |
104 | ||
9b29ea95 | 105 | for (ALL_LIST_ELEMENTS_RO(pim->upstream_list, ch_node, child)) { |
d62a17ae | 106 | if ((up->sg.grp.s_addr != INADDR_ANY) |
107 | && (child->sg.grp.s_addr == up->sg.grp.s_addr) | |
108 | && (child != up)) { | |
109 | child->parent = up; | |
110 | listnode_add_sort(up->sources, child); | |
111 | } | |
03417ccd | 112 | } |
cfa91a87 DS |
113 | } |
114 | ||
4d99418b DS |
115 | /* |
116 | * If we have a (*,*) || (S,*) there is no parent | |
117 | * If we have a (S,G), find the (*,G) | |
118 | * If we have a (*,G), find the (*,*) | |
119 | */ | |
9b29ea95 DS |
120 | static struct pim_upstream *pim_upstream_find_parent(struct pim_instance *pim, |
121 | struct pim_upstream *child) | |
4d99418b | 122 | { |
d62a17ae | 123 | struct prefix_sg any = child->sg; |
124 | struct pim_upstream *up = NULL; | |
4d99418b | 125 | |
d62a17ae | 126 | // (S,G) |
127 | if ((child->sg.src.s_addr != INADDR_ANY) | |
128 | && (child->sg.grp.s_addr != INADDR_ANY)) { | |
129 | any.src.s_addr = INADDR_ANY; | |
9b29ea95 | 130 | up = pim_upstream_find(pim, &any); |
03417ccd | 131 | |
d62a17ae | 132 | if (up) |
133 | listnode_add(up->sources, child); | |
03417ccd | 134 | |
d62a17ae | 135 | return up; |
136 | } | |
4d99418b | 137 | |
d62a17ae | 138 | return NULL; |
4d99418b DS |
139 | } |
140 | ||
12e41d03 DL |
141 | static void upstream_channel_oil_detach(struct pim_upstream *up) |
142 | { | |
d62a17ae | 143 | if (up->channel_oil) { |
144 | /* Detaching from channel_oil, channel_oil may exist post del, | |
145 | but upstream would not keep reference of it | |
146 | */ | |
13221cf2 | 147 | up->channel_oil->up = NULL; |
d62a17ae | 148 | pim_channel_oil_del(up->channel_oil); |
149 | up->channel_oil = NULL; | |
150 | } | |
12e41d03 DL |
151 | } |
152 | ||
9b29ea95 DS |
153 | struct pim_upstream *pim_upstream_del(struct pim_instance *pim, |
154 | struct pim_upstream *up, const char *name) | |
12e41d03 | 155 | { |
7692c5ae DS |
156 | struct listnode *node, *nnode; |
157 | struct pim_ifchannel *ch; | |
d62a17ae | 158 | bool notify_msdp = false; |
159 | struct prefix nht_p; | |
160 | ||
161 | if (PIM_DEBUG_TRACE) | |
162 | zlog_debug( | |
8dbdb215 | 163 | "%s(%s): Delete %s[%s] ref count: %d , flags: %d c_oil ref count %d (Pre decrement)", |
996c9314 LB |
164 | __PRETTY_FUNCTION__, name, up->sg_str, pim->vrf->name, |
165 | up->ref_count, up->flags, | |
166 | up->channel_oil->oil_ref_count); | |
d62a17ae | 167 | |
e83f3b31 | 168 | assert(up->ref_count > 0); |
169 | ||
d62a17ae | 170 | --up->ref_count; |
171 | ||
172 | if (up->ref_count >= 1) | |
173 | return up; | |
174 | ||
175 | THREAD_OFF(up->t_ka_timer); | |
176 | THREAD_OFF(up->t_rs_timer); | |
177 | THREAD_OFF(up->t_msdp_reg_timer); | |
178 | ||
179 | if (up->join_state == PIM_UPSTREAM_JOINED) { | |
180 | pim_jp_agg_single_upstream_send(&up->rpf, up, 0); | |
181 | ||
182 | if (up->sg.src.s_addr == INADDR_ANY) { | |
183 | /* if a (*, G) entry in the joined state is being | |
184 | * deleted we | |
185 | * need to notify MSDP */ | |
186 | notify_msdp = true; | |
187 | } | |
188 | } | |
189 | ||
190 | join_timer_stop(up); | |
191 | pim_jp_agg_upstream_verification(up, false); | |
192 | up->rpf.source_nexthop.interface = NULL; | |
193 | ||
194 | if (up->sg.src.s_addr != INADDR_ANY) { | |
391b8b08 DS |
195 | if (pim->upstream_sg_wheel) |
196 | wheel_remove_item(pim->upstream_sg_wheel, up); | |
d62a17ae | 197 | notify_msdp = true; |
198 | } | |
199 | ||
d62a17ae | 200 | pim_mroute_del(up->channel_oil, __PRETTY_FUNCTION__); |
201 | upstream_channel_oil_detach(up); | |
202 | ||
7692c5ae DS |
203 | for (ALL_LIST_ELEMENTS(up->ifchannels, node, nnode, ch)) |
204 | pim_ifchannel_delete(ch); | |
6a154c88 | 205 | list_delete(&up->ifchannels); |
d62a17ae | 206 | |
7692c5ae DS |
207 | pim_upstream_remove_children(pim, up); |
208 | if (up->sources) | |
6a154c88 | 209 | list_delete(&up->sources); |
7692c5ae | 210 | |
d62a17ae | 211 | if (up->parent && up->parent->sources) |
212 | listnode_delete(up->parent->sources, up); | |
213 | up->parent = NULL; | |
214 | ||
9b29ea95 DS |
215 | listnode_delete(pim->upstream_list, up); |
216 | hash_release(pim->upstream_hash, up); | |
d62a17ae | 217 | |
218 | if (notify_msdp) { | |
472ad383 | 219 | pim_msdp_up_del(pim, &up->sg); |
d62a17ae | 220 | } |
221 | ||
246445a3 SP |
222 | /* When RP gets deleted, pim_rp_del() deregister addr with Zebra NHT |
223 | * and assign up->upstream_addr as INADDR_ANY. | |
224 | * So before de-registering the upstream address, check if is not equal | |
225 | * to INADDR_ANY. This is done in order to avoid de-registering for | |
226 | * 255.255.255.255 which is maintained for some reason.. | |
227 | */ | |
228 | if (up->upstream_addr.s_addr != INADDR_ANY) { | |
229 | /* Deregister addr with Zebra NHT */ | |
230 | nht_p.family = AF_INET; | |
231 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
232 | nht_p.u.prefix4 = up->upstream_addr; | |
233 | if (PIM_DEBUG_TRACE) { | |
234 | char buf[PREFIX2STR_BUFFER]; | |
235 | prefix2str(&nht_p, buf, sizeof(buf)); | |
236 | zlog_debug("%s: Deregister upstream %s addr %s with Zebra NHT", | |
237 | __PRETTY_FUNCTION__, up->sg_str, buf); | |
238 | } | |
239 | pim_delete_tracked_nexthop(pim, &nht_p, up, NULL); | |
d62a17ae | 240 | } |
d62a17ae | 241 | |
172e45dc | 242 | XFREE(MTYPE_PIM_UPSTREAM, up); |
d62a17ae | 243 | |
244 | return NULL; | |
12e41d03 DL |
245 | } |
246 | ||
d62a17ae | 247 | void pim_upstream_send_join(struct pim_upstream *up) |
12e41d03 | 248 | { |
957d93ea SP |
249 | if (!up->rpf.source_nexthop.interface) { |
250 | if (PIM_DEBUG_TRACE) | |
251 | zlog_debug("%s: up %s RPF is not present", | |
252 | __PRETTY_FUNCTION__, up->sg_str); | |
253 | return; | |
254 | } | |
255 | ||
d62a17ae | 256 | if (PIM_DEBUG_TRACE) { |
257 | char rpf_str[PREFIX_STRLEN]; | |
258 | pim_addr_dump("<rpf?>", &up->rpf.rpf_addr, rpf_str, | |
259 | sizeof(rpf_str)); | |
260 | zlog_debug("%s: RPF'%s=%s(%s) for Interface %s", | |
261 | __PRETTY_FUNCTION__, up->sg_str, rpf_str, | |
262 | pim_upstream_state2str(up->join_state), | |
263 | up->rpf.source_nexthop.interface->name); | |
264 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) { | |
265 | zlog_debug("%s: can't send join upstream: RPF'%s=%s", | |
266 | __PRETTY_FUNCTION__, up->sg_str, rpf_str); | |
267 | /* warning only */ | |
268 | } | |
269 | } | |
270 | ||
271 | /* send Join(S,G) to the current upstream neighbor */ | |
272 | pim_jp_agg_single_upstream_send(&up->rpf, up, 1 /* join */); | |
12e41d03 DL |
273 | } |
274 | ||
275 | static int on_join_timer(struct thread *t) | |
276 | { | |
d62a17ae | 277 | struct pim_upstream *up; |
12e41d03 | 278 | |
d62a17ae | 279 | up = THREAD_ARG(t); |
12e41d03 | 280 | |
957d93ea SP |
281 | if (!up->rpf.source_nexthop.interface) { |
282 | if (PIM_DEBUG_TRACE) | |
283 | zlog_debug("%s: up %s RPF is not present", | |
284 | __PRETTY_FUNCTION__, up->sg_str); | |
285 | return 0; | |
286 | } | |
287 | ||
d62a17ae | 288 | /* |
289 | * In the case of a HFR we will not ahve anyone to send this to. | |
290 | */ | |
291 | if (PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) | |
292 | return 0; | |
bb6e291f | 293 | |
d62a17ae | 294 | /* |
295 | * Don't send the join if the outgoing interface is a loopback | |
296 | * But since this might change leave the join timer running | |
297 | */ | |
298 | if (up->rpf.source_nexthop | |
299 | .interface && !if_is_loopback(up->rpf.source_nexthop.interface)) | |
300 | pim_upstream_send_join(up); | |
12e41d03 | 301 | |
d62a17ae | 302 | join_timer_start(up); |
12e41d03 | 303 | |
d62a17ae | 304 | return 0; |
12e41d03 DL |
305 | } |
306 | ||
982bff89 | 307 | static void join_timer_stop(struct pim_upstream *up) |
12e41d03 | 308 | { |
47e3ce59 | 309 | struct pim_neighbor *nbr = NULL; |
957d93ea | 310 | |
d62a17ae | 311 | THREAD_OFF(up->t_join_timer); |
7eb90689 | 312 | |
47e3ce59 SP |
313 | if (up->rpf.source_nexthop.interface) |
314 | nbr = pim_neighbor_find(up->rpf.source_nexthop.interface, | |
315 | up->rpf.rpf_addr.u.prefix4); | |
982bff89 | 316 | |
d62a17ae | 317 | if (nbr) |
318 | pim_jp_agg_remove_group(nbr->upstream_jp_agg, up); | |
982bff89 | 319 | |
d62a17ae | 320 | pim_jp_agg_upstream_verification(up, false); |
982bff89 DS |
321 | } |
322 | ||
d62a17ae | 323 | void join_timer_start(struct pim_upstream *up) |
982bff89 | 324 | { |
d62a17ae | 325 | struct pim_neighbor *nbr = NULL; |
326 | ||
327 | if (up->rpf.source_nexthop.interface) { | |
328 | nbr = pim_neighbor_find(up->rpf.source_nexthop.interface, | |
329 | up->rpf.rpf_addr.u.prefix4); | |
330 | ||
331 | if (PIM_DEBUG_PIM_EVENTS) { | |
332 | zlog_debug( | |
333 | "%s: starting %d sec timer for upstream (S,G)=%s", | |
5b45753e | 334 | __PRETTY_FUNCTION__, router->t_periodic, |
d62a17ae | 335 | up->sg_str); |
336 | } | |
337 | } | |
338 | ||
339 | if (nbr) | |
340 | pim_jp_agg_add_group(nbr->upstream_jp_agg, up, 1); | |
341 | else { | |
342 | THREAD_OFF(up->t_join_timer); | |
36417fcc | 343 | thread_add_timer(router->master, on_join_timer, up, |
5b45753e | 344 | router->t_periodic, &up->t_join_timer); |
d62a17ae | 345 | } |
346 | pim_jp_agg_upstream_verification(up, true); | |
12e41d03 DL |
347 | } |
348 | ||
982bff89 DS |
349 | /* |
350 | * This is only called when we are switching the upstream | |
351 | * J/P from one neighbor to another | |
352 | * | |
353 | * As such we need to remove from the old list and | |
354 | * add to the new list. | |
355 | */ | |
d62a17ae | 356 | void pim_upstream_join_timer_restart(struct pim_upstream *up, |
357 | struct pim_rpf *old) | |
12e41d03 | 358 | { |
d62a17ae | 359 | // THREAD_OFF(up->t_join_timer); |
360 | join_timer_start(up); | |
12e41d03 DL |
361 | } |
362 | ||
363 | static void pim_upstream_join_timer_restart_msec(struct pim_upstream *up, | |
364 | int interval_msec) | |
365 | { | |
d62a17ae | 366 | if (PIM_DEBUG_PIM_EVENTS) { |
367 | zlog_debug("%s: restarting %d msec timer for upstream (S,G)=%s", | |
368 | __PRETTY_FUNCTION__, interval_msec, up->sg_str); | |
369 | } | |
370 | ||
371 | THREAD_OFF(up->t_join_timer); | |
36417fcc | 372 | thread_add_timer_msec(router->master, on_join_timer, up, interval_msec, |
d62a17ae | 373 | &up->t_join_timer); |
12e41d03 DL |
374 | } |
375 | ||
376 | void pim_upstream_join_suppress(struct pim_upstream *up, | |
d62a17ae | 377 | struct in_addr rpf_addr, int holdtime) |
12e41d03 | 378 | { |
d62a17ae | 379 | long t_joinsuppress_msec; |
380 | long join_timer_remain_msec; | |
381 | ||
957d93ea SP |
382 | if (!up->rpf.source_nexthop.interface) { |
383 | if (PIM_DEBUG_TRACE) | |
384 | zlog_debug("%s: up %s RPF is not present", | |
385 | __PRETTY_FUNCTION__, up->sg_str); | |
386 | return; | |
387 | } | |
388 | ||
d62a17ae | 389 | t_joinsuppress_msec = |
390 | MIN(pim_if_t_suppressed_msec(up->rpf.source_nexthop.interface), | |
391 | 1000 * holdtime); | |
392 | ||
393 | join_timer_remain_msec = pim_time_timer_remain_msec(up->t_join_timer); | |
394 | ||
395 | if (PIM_DEBUG_TRACE) { | |
396 | char rpf_str[INET_ADDRSTRLEN]; | |
397 | pim_inet4_dump("<rpf?>", rpf_addr, rpf_str, sizeof(rpf_str)); | |
398 | zlog_debug( | |
399 | "%s %s: detected Join%s to RPF'(S,G)=%s: join_timer=%ld msec t_joinsuppress=%ld msec", | |
400 | __FILE__, __PRETTY_FUNCTION__, up->sg_str, rpf_str, | |
401 | join_timer_remain_msec, t_joinsuppress_msec); | |
402 | } | |
403 | ||
404 | if (join_timer_remain_msec < t_joinsuppress_msec) { | |
405 | if (PIM_DEBUG_TRACE) { | |
406 | zlog_debug( | |
407 | "%s %s: suppressing Join(S,G)=%s for %ld msec", | |
408 | __FILE__, __PRETTY_FUNCTION__, up->sg_str, | |
409 | t_joinsuppress_msec); | |
410 | } | |
411 | ||
412 | pim_upstream_join_timer_restart_msec(up, t_joinsuppress_msec); | |
413 | } | |
12e41d03 DL |
414 | } |
415 | ||
416 | void pim_upstream_join_timer_decrease_to_t_override(const char *debug_label, | |
d62a17ae | 417 | struct pim_upstream *up) |
12e41d03 | 418 | { |
d62a17ae | 419 | long join_timer_remain_msec; |
420 | int t_override_msec; | |
421 | ||
957d93ea SP |
422 | if (!up->rpf.source_nexthop.interface) { |
423 | if (PIM_DEBUG_TRACE) | |
424 | zlog_debug("%s: up %s RPF is not present", | |
425 | __PRETTY_FUNCTION__, up->sg_str); | |
426 | return; | |
427 | } | |
428 | ||
d62a17ae | 429 | join_timer_remain_msec = pim_time_timer_remain_msec(up->t_join_timer); |
430 | t_override_msec = | |
431 | pim_if_t_override_msec(up->rpf.source_nexthop.interface); | |
432 | ||
433 | if (PIM_DEBUG_TRACE) { | |
434 | char rpf_str[INET_ADDRSTRLEN]; | |
435 | pim_inet4_dump("<rpf?>", up->rpf.rpf_addr.u.prefix4, rpf_str, | |
436 | sizeof(rpf_str)); | |
437 | zlog_debug( | |
438 | "%s: to RPF'%s=%s: join_timer=%ld msec t_override=%d msec", | |
439 | debug_label, up->sg_str, rpf_str, | |
440 | join_timer_remain_msec, t_override_msec); | |
441 | } | |
442 | ||
443 | if (join_timer_remain_msec > t_override_msec) { | |
444 | if (PIM_DEBUG_TRACE) { | |
445 | zlog_debug( | |
446 | "%s: decreasing (S,G)=%s join timer to t_override=%d msec", | |
447 | debug_label, up->sg_str, t_override_msec); | |
448 | } | |
449 | ||
450 | pim_upstream_join_timer_restart_msec(up, t_override_msec); | |
451 | } | |
12e41d03 DL |
452 | } |
453 | ||
454 | static void forward_on(struct pim_upstream *up) | |
455 | { | |
d62a17ae | 456 | struct listnode *chnode; |
457 | struct listnode *chnextnode; | |
458 | struct pim_ifchannel *ch = NULL; | |
12e41d03 | 459 | |
d62a17ae | 460 | /* scan (S,G) state */ |
461 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
462 | if (pim_macro_chisin_oiflist(ch)) | |
463 | pim_forward_start(ch); | |
12e41d03 | 464 | |
d62a17ae | 465 | } /* scan iface channel list */ |
12e41d03 DL |
466 | } |
467 | ||
468 | static void forward_off(struct pim_upstream *up) | |
469 | { | |
d62a17ae | 470 | struct listnode *chnode; |
471 | struct listnode *chnextnode; | |
472 | struct pim_ifchannel *ch; | |
12e41d03 | 473 | |
d62a17ae | 474 | /* scan per-interface (S,G) state */ |
475 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
12e41d03 | 476 | |
aabb9a2f | 477 | pim_forward_stop(ch, false); |
12e41d03 | 478 | |
d62a17ae | 479 | } /* scan iface channel list */ |
12e41d03 DL |
480 | } |
481 | ||
d62a17ae | 482 | static int pim_upstream_could_register(struct pim_upstream *up) |
bb6e291f | 483 | { |
d62a17ae | 484 | struct pim_interface *pim_ifp = NULL; |
485 | ||
8eeaef9b AK |
486 | /* FORCE_PIMREG is a generic flag to let an app like VxLAN-AA register |
487 | * a source on an upstream entry even if the source is not directly | |
488 | * connected on the IIF. | |
489 | */ | |
490 | if (PIM_UPSTREAM_FLAG_TEST_FORCE_PIMREG(up->flags)) | |
491 | return 1; | |
492 | ||
d62a17ae | 493 | if (up->rpf.source_nexthop.interface) |
494 | pim_ifp = up->rpf.source_nexthop.interface->info; | |
495 | else { | |
496 | if (PIM_DEBUG_TRACE) | |
497 | zlog_debug("%s: up %s RPF is not present", | |
498 | __PRETTY_FUNCTION__, up->sg_str); | |
499 | } | |
bb6e291f | 500 | |
d62a17ae | 501 | if (pim_ifp && PIM_I_am_DR(pim_ifp) |
502 | && pim_if_connected_to_source(up->rpf.source_nexthop.interface, | |
503 | up->sg.src)) | |
504 | return 1; | |
bb6e291f | 505 | |
d62a17ae | 506 | return 0; |
bb6e291f DS |
507 | } |
508 | ||
0437e105 | 509 | /* Source registration is suppressed for SSM groups. When the SSM range changes |
15a5dafe | 510 | * we re-revaluate register setup for existing upstream entries */ |
9b29ea95 | 511 | void pim_upstream_register_reevaluate(struct pim_instance *pim) |
15a5dafe | 512 | { |
d62a17ae | 513 | struct listnode *upnode; |
514 | struct pim_upstream *up; | |
515 | ||
9b29ea95 | 516 | for (ALL_LIST_ELEMENTS_RO(pim->upstream_list, upnode, up)) { |
d62a17ae | 517 | /* If FHR is set CouldRegister is True. Also check if the flow |
518 | * is actually active; if it is not kat setup will trigger | |
519 | * source | |
520 | * registration whenever the flow becomes active. */ | |
521 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags) || !up->t_ka_timer) | |
522 | continue; | |
523 | ||
6f439a70 | 524 | if (pim_is_grp_ssm(pim, up->sg.grp)) { |
d62a17ae | 525 | /* clear the register state for SSM groups */ |
526 | if (up->reg_state != PIM_REG_NOINFO) { | |
527 | if (PIM_DEBUG_PIM_EVENTS) | |
528 | zlog_debug( | |
529 | "Clear register for %s as G is now SSM", | |
530 | up->sg_str); | |
531 | /* remove regiface from the OIL if it is there*/ | |
532 | pim_channel_del_oif(up->channel_oil, | |
9b29ea95 | 533 | pim->regiface, |
d62a17ae | 534 | PIM_OIF_FLAG_PROTO_PIM); |
535 | up->reg_state = PIM_REG_NOINFO; | |
536 | } | |
537 | } else { | |
538 | /* register ASM sources with the RP */ | |
539 | if (up->reg_state == PIM_REG_NOINFO) { | |
540 | if (PIM_DEBUG_PIM_EVENTS) | |
541 | zlog_debug( | |
542 | "Register %s as G is now ASM", | |
543 | up->sg_str); | |
544 | pim_channel_add_oif(up->channel_oil, | |
9b29ea95 | 545 | pim->regiface, |
d62a17ae | 546 | PIM_OIF_FLAG_PROTO_PIM); |
547 | up->reg_state = PIM_REG_JOIN; | |
548 | } | |
549 | } | |
550 | } | |
15a5dafe | 551 | } |
552 | ||
1eca8576 | 553 | void pim_upstream_switch(struct pim_instance *pim, struct pim_upstream *up, |
d62a17ae | 554 | enum pim_upstream_state new_state) |
12e41d03 | 555 | { |
d62a17ae | 556 | enum pim_upstream_state old_state = up->join_state; |
557 | ||
957d93ea | 558 | if (up->upstream_addr.s_addr == INADDR_ANY) { |
47e3ce59 SP |
559 | if (PIM_DEBUG_PIM_EVENTS) |
560 | zlog_debug("%s: RPF not configured for %s", | |
561 | __PRETTY_FUNCTION__, up->sg_str); | |
957d93ea SP |
562 | return; |
563 | } | |
564 | ||
565 | if (!up->rpf.source_nexthop.interface) { | |
47e3ce59 SP |
566 | if (PIM_DEBUG_PIM_EVENTS) |
567 | zlog_debug("%s: RP not reachable for %s", | |
568 | __PRETTY_FUNCTION__, up->sg_str); | |
957d93ea SP |
569 | return; |
570 | } | |
571 | ||
d62a17ae | 572 | if (PIM_DEBUG_PIM_EVENTS) { |
573 | zlog_debug("%s: PIM_UPSTREAM_%s: (S,G) old: %s new: %s", | |
574 | __PRETTY_FUNCTION__, up->sg_str, | |
575 | pim_upstream_state2str(up->join_state), | |
576 | pim_upstream_state2str(new_state)); | |
577 | } | |
578 | ||
579 | up->join_state = new_state; | |
580 | if (old_state != new_state) | |
581 | up->state_transition = pim_time_monotonic_sec(); | |
582 | ||
583 | pim_upstream_update_assert_tracking_desired(up); | |
584 | ||
585 | if (new_state == PIM_UPSTREAM_JOINED) { | |
586 | if (old_state != PIM_UPSTREAM_JOINED) { | |
587 | int old_fhr = PIM_UPSTREAM_FLAG_TEST_FHR(up->flags); | |
588 | forward_on(up); | |
1eca8576 | 589 | pim_msdp_up_join_state_changed(pim, up); |
d62a17ae | 590 | if (pim_upstream_could_register(up)) { |
591 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); | |
592 | if (!old_fhr | |
593 | && PIM_UPSTREAM_FLAG_TEST_SRC_STREAM( | |
594 | up->flags)) { | |
595 | pim_upstream_keep_alive_timer_start( | |
19b807ca | 596 | up, pim->keep_alive_time); |
d62a17ae | 597 | pim_register_join(up); |
598 | } | |
599 | } else { | |
600 | pim_upstream_send_join(up); | |
601 | join_timer_start(up); | |
602 | } | |
603 | } else { | |
604 | forward_on(up); | |
605 | } | |
606 | } else { | |
607 | ||
608 | forward_off(up); | |
609 | if (old_state == PIM_UPSTREAM_JOINED) | |
1eca8576 | 610 | pim_msdp_up_join_state_changed(pim, up); |
d62a17ae | 611 | |
612 | /* IHR, Trigger SGRpt on *,G IIF to prune S,G from RPT towards | |
613 | RP. | |
614 | If I am RP for G then send S,G prune to its IIF. */ | |
615 | if (pim_upstream_is_sg_rpt(up) && up->parent | |
1eca8576 | 616 | && !I_am_RP(pim, up->sg.grp)) { |
d62a17ae | 617 | if (PIM_DEBUG_PIM_TRACE_DETAIL) |
618 | zlog_debug( | |
957d93ea SP |
619 | "%s: *,G IIF %s S,G IIF %s ", |
620 | __PRETTY_FUNCTION__, | |
621 | up->parent->rpf.source_nexthop.interface ? | |
622 | up->parent->rpf.source_nexthop.interface->name | |
623 | : "Unknown", | |
624 | up->rpf.source_nexthop.interface ? | |
625 | up->rpf.source_nexthop.interface->name : | |
626 | "Unknown"); | |
d62a17ae | 627 | pim_jp_agg_single_upstream_send(&up->parent->rpf, |
628 | up->parent, | |
629 | 1 /* (W,G) Join */); | |
630 | } else | |
631 | pim_jp_agg_single_upstream_send(&up->rpf, up, | |
632 | 0 /* prune */); | |
633 | join_timer_stop(up); | |
634 | } | |
12e41d03 DL |
635 | } |
636 | ||
d62a17ae | 637 | int pim_upstream_compare(void *arg1, void *arg2) |
03417ccd | 638 | { |
d62a17ae | 639 | const struct pim_upstream *up1 = (const struct pim_upstream *)arg1; |
640 | const struct pim_upstream *up2 = (const struct pim_upstream *)arg2; | |
03417ccd | 641 | |
d62a17ae | 642 | if (ntohl(up1->sg.grp.s_addr) < ntohl(up2->sg.grp.s_addr)) |
643 | return -1; | |
03417ccd | 644 | |
d62a17ae | 645 | if (ntohl(up1->sg.grp.s_addr) > ntohl(up2->sg.grp.s_addr)) |
646 | return 1; | |
03417ccd | 647 | |
d62a17ae | 648 | if (ntohl(up1->sg.src.s_addr) < ntohl(up2->sg.src.s_addr)) |
649 | return -1; | |
03417ccd | 650 | |
d62a17ae | 651 | if (ntohl(up1->sg.src.s_addr) > ntohl(up2->sg.src.s_addr)) |
652 | return 1; | |
03417ccd | 653 | |
d62a17ae | 654 | return 0; |
03417ccd DS |
655 | } |
656 | ||
6a5de0ad AK |
657 | void pim_upstream_fill_static_iif(struct pim_upstream *up, |
658 | struct interface *incoming) | |
659 | { | |
660 | up->rpf.source_nexthop.interface = incoming; | |
661 | ||
662 | /* reset other parameters to matched a connected incoming interface */ | |
663 | up->rpf.source_nexthop.mrib_nexthop_addr.family = AF_INET; | |
664 | up->rpf.source_nexthop.mrib_nexthop_addr.u.prefix4.s_addr = | |
665 | PIM_NET_INADDR_ANY; | |
666 | up->rpf.source_nexthop.mrib_metric_preference = | |
667 | ZEBRA_CONNECT_DISTANCE_DEFAULT; | |
668 | up->rpf.source_nexthop.mrib_route_metric = 0; | |
669 | up->rpf.rpf_addr.family = AF_INET; | |
670 | up->rpf.rpf_addr.u.prefix4.s_addr = PIM_NET_INADDR_ANY; | |
671 | ||
672 | } | |
673 | ||
2002dcdb DS |
674 | static struct pim_upstream *pim_upstream_new(struct pim_instance *pim, |
675 | struct prefix_sg *sg, | |
676 | struct interface *incoming, | |
0885a9f1 DS |
677 | int flags, |
678 | struct pim_ifchannel *ch) | |
12e41d03 | 679 | { |
d62a17ae | 680 | enum pim_rpf_result rpf_result; |
681 | struct pim_interface *pim_ifp; | |
682 | struct pim_upstream *up; | |
683 | ||
684 | up = XCALLOC(MTYPE_PIM_UPSTREAM, sizeof(*up)); | |
d62a17ae | 685 | |
686 | up->sg = *sg; | |
687 | pim_str_sg_set(sg, up->sg_str); | |
0885a9f1 DS |
688 | if (ch) |
689 | ch->upstream = up; | |
690 | ||
9b29ea95 | 691 | up = hash_get(pim->upstream_hash, up, hash_alloc_intern); |
732c209c SP |
692 | /* Set up->upstream_addr as INADDR_ANY, if RP is not |
693 | * configured and retain the upstream data structure | |
694 | */ | |
d9c9a9ee DS |
695 | if (!pim_rp_set_upstream_addr(pim, &up->upstream_addr, sg->src, |
696 | sg->grp)) { | |
d62a17ae | 697 | if (PIM_DEBUG_TRACE) |
698 | zlog_debug("%s: Received a (*,G) with no RP configured", | |
699 | __PRETTY_FUNCTION__); | |
d62a17ae | 700 | } |
701 | ||
9b29ea95 | 702 | up->parent = pim_upstream_find_parent(pim, up); |
d62a17ae | 703 | if (up->sg.src.s_addr == INADDR_ANY) { |
704 | up->sources = list_new(); | |
705 | up->sources->cmp = pim_upstream_compare; | |
706 | } else | |
707 | up->sources = NULL; | |
708 | ||
9b29ea95 | 709 | pim_upstream_find_new_children(pim, up); |
d62a17ae | 710 | up->flags = flags; |
711 | up->ref_count = 1; | |
712 | up->t_join_timer = NULL; | |
713 | up->t_ka_timer = NULL; | |
714 | up->t_rs_timer = NULL; | |
715 | up->t_msdp_reg_timer = NULL; | |
716 | up->join_state = PIM_UPSTREAM_NOTJOINED; | |
717 | up->reg_state = PIM_REG_NOINFO; | |
718 | up->state_transition = pim_time_monotonic_sec(); | |
719 | up->channel_oil = NULL; | |
720 | up->sptbit = PIM_UPSTREAM_SPTBIT_FALSE; | |
721 | ||
722 | up->rpf.source_nexthop.interface = NULL; | |
723 | up->rpf.source_nexthop.mrib_nexthop_addr.family = AF_INET; | |
724 | up->rpf.source_nexthop.mrib_nexthop_addr.u.prefix4.s_addr = | |
725 | PIM_NET_INADDR_ANY; | |
726 | up->rpf.source_nexthop.mrib_metric_preference = | |
d17612dd | 727 | router->infinite_assert_metric.metric_preference; |
d62a17ae | 728 | up->rpf.source_nexthop.mrib_route_metric = |
d17612dd | 729 | router->infinite_assert_metric.route_metric; |
d62a17ae | 730 | up->rpf.rpf_addr.family = AF_INET; |
731 | up->rpf.rpf_addr.u.prefix4.s_addr = PIM_NET_INADDR_ANY; | |
732 | ||
733 | up->ifchannels = list_new(); | |
734 | up->ifchannels->cmp = (int (*)(void *, void *))pim_ifchannel_compare; | |
735 | ||
736 | if (up->sg.src.s_addr != INADDR_ANY) | |
9b29ea95 | 737 | wheel_add_item(pim->upstream_sg_wheel, up); |
d62a17ae | 738 | |
6a5de0ad AK |
739 | if (PIM_UPSTREAM_FLAG_TEST_STATIC_IIF(up->flags)) { |
740 | pim_upstream_fill_static_iif(up, incoming); | |
741 | pim_ifp = up->rpf.source_nexthop.interface->info; | |
742 | assert(pim_ifp); | |
743 | up->channel_oil = pim_channel_oil_add(pim, | |
744 | &up->sg, pim_ifp->mroute_vif_index); | |
745 | } else if (up->upstream_addr.s_addr == INADDR_ANY) { | |
732c209c SP |
746 | /* Create a dummmy channel oil with incoming ineterface MAXVIFS, |
747 | * since RP is not configured | |
748 | */ | |
749 | up->channel_oil = pim_channel_oil_add(pim, &up->sg, MAXVIFS); | |
d62a17ae | 750 | |
6a5de0ad | 751 | } else { |
732c209c SP |
752 | rpf_result = pim_rpf_update(pim, up, NULL, 1); |
753 | if (rpf_result == PIM_RPF_FAILURE) { | |
754 | if (PIM_DEBUG_TRACE) | |
755 | zlog_debug( | |
756 | "%s: Attempting to create upstream(%s), Unable to RPF for source", | |
757 | __PRETTY_FUNCTION__, up->sg_str); | |
758 | /* Create a dummmy channel oil with incoming ineterface | |
759 | * MAXVIFS, since RP is not reachable | |
760 | */ | |
761 | up->channel_oil = pim_channel_oil_add( | |
762 | pim, &up->sg, MAXVIFS); | |
d62a17ae | 763 | } |
764 | ||
732c209c SP |
765 | if (up->rpf.source_nexthop.interface) { |
766 | pim_ifp = up->rpf.source_nexthop.interface->info; | |
767 | if (pim_ifp) | |
768 | up->channel_oil = pim_channel_oil_add(pim, | |
769 | &up->sg, pim_ifp->mroute_vif_index); | |
770 | } | |
d62a17ae | 771 | } |
772 | ||
9b29ea95 | 773 | listnode_add_sort(pim->upstream_list, up); |
d62a17ae | 774 | |
775 | if (PIM_DEBUG_TRACE) { | |
776 | zlog_debug( | |
777 | "%s: Created Upstream %s upstream_addr %s ref count %d increment", | |
778 | __PRETTY_FUNCTION__, up->sg_str, | |
779 | inet_ntoa(up->upstream_addr), up->ref_count); | |
780 | } | |
781 | ||
782 | return up; | |
12e41d03 DL |
783 | } |
784 | ||
9b29ea95 DS |
785 | struct pim_upstream *pim_upstream_find(struct pim_instance *pim, |
786 | struct prefix_sg *sg) | |
12e41d03 | 787 | { |
d62a17ae | 788 | struct pim_upstream lookup; |
789 | struct pim_upstream *up = NULL; | |
12e41d03 | 790 | |
d62a17ae | 791 | lookup.sg = *sg; |
9b29ea95 | 792 | up = hash_lookup(pim->upstream_hash, &lookup); |
d62a17ae | 793 | return up; |
12e41d03 DL |
794 | } |
795 | ||
d62a17ae | 796 | struct pim_upstream *pim_upstream_find_or_add(struct prefix_sg *sg, |
797 | struct interface *incoming, | |
798 | int flags, const char *name) | |
e711cd3c | 799 | { |
d62a17ae | 800 | struct pim_upstream *up; |
9b29ea95 DS |
801 | struct pim_interface *pim_ifp; |
802 | ||
803 | pim_ifp = incoming->info; | |
d62a17ae | 804 | |
9b29ea95 | 805 | up = pim_upstream_find(pim_ifp->pim, sg); |
d62a17ae | 806 | |
807 | if (up) { | |
808 | if (!(up->flags & flags)) { | |
809 | up->flags |= flags; | |
810 | up->ref_count++; | |
811 | if (PIM_DEBUG_TRACE) | |
812 | zlog_debug( | |
813 | "%s(%s): upstream %s ref count %d increment", | |
814 | __PRETTY_FUNCTION__, name, up->sg_str, | |
815 | up->ref_count); | |
816 | } | |
817 | } else | |
0885a9f1 DS |
818 | up = pim_upstream_add(pim_ifp->pim, sg, incoming, flags, name, |
819 | NULL); | |
d62a17ae | 820 | |
821 | return up; | |
e711cd3c DS |
822 | } |
823 | ||
d62a17ae | 824 | void pim_upstream_ref(struct pim_upstream *up, int flags, const char *name) |
1bf16443 | 825 | { |
d62a17ae | 826 | up->flags |= flags; |
827 | ++up->ref_count; | |
828 | if (PIM_DEBUG_TRACE) | |
829 | zlog_debug("%s(%s): upstream %s ref count %d increment", | |
830 | __PRETTY_FUNCTION__, name, up->sg_str, | |
831 | up->ref_count); | |
1bf16443 | 832 | } |
833 | ||
2002dcdb DS |
834 | struct pim_upstream *pim_upstream_add(struct pim_instance *pim, |
835 | struct prefix_sg *sg, | |
d62a17ae | 836 | struct interface *incoming, int flags, |
0885a9f1 DS |
837 | const char *name, |
838 | struct pim_ifchannel *ch) | |
12e41d03 | 839 | { |
d62a17ae | 840 | struct pim_upstream *up = NULL; |
841 | int found = 0; | |
9b29ea95 | 842 | |
2002dcdb | 843 | up = pim_upstream_find(pim, sg); |
d62a17ae | 844 | if (up) { |
845 | pim_upstream_ref(up, flags, name); | |
846 | found = 1; | |
847 | } else { | |
0885a9f1 | 848 | up = pim_upstream_new(pim, sg, incoming, flags, ch); |
d62a17ae | 849 | } |
850 | ||
851 | if (PIM_DEBUG_TRACE) { | |
852 | if (up) { | |
853 | char buf[PREFIX2STR_BUFFER]; | |
854 | prefix2str(&up->rpf.rpf_addr, buf, sizeof(buf)); | |
855 | zlog_debug("%s(%s): %s, iif %s (%s) found: %d: ref_count: %d", | |
f4075cb4 | 856 | __PRETTY_FUNCTION__, name, |
55785900 | 857 | up->sg_str, buf, up->rpf.source_nexthop.interface ? |
957d93ea | 858 | up->rpf.source_nexthop.interface->name : "Unknown" , |
55785900 | 859 | found, up->ref_count); |
d62a17ae | 860 | } else |
861 | zlog_debug("%s(%s): (%s) failure to create", | |
862 | __PRETTY_FUNCTION__, name, | |
863 | pim_str_sg_dump(sg)); | |
864 | } | |
12e41d03 | 865 | |
d62a17ae | 866 | return up; |
12e41d03 DL |
867 | } |
868 | ||
c8fc07cb DS |
869 | /* |
870 | * Passed in up must be the upstream for ch. starch is NULL if no | |
871 | * information | |
872 | */ | |
d62a17ae | 873 | int pim_upstream_evaluate_join_desired_interface(struct pim_upstream *up, |
874 | struct pim_ifchannel *ch, | |
875 | struct pim_ifchannel *starch) | |
7a3ddda5 | 876 | { |
d62a17ae | 877 | if (ch) { |
878 | if (PIM_IF_FLAG_TEST_S_G_RPT(ch->flags)) | |
879 | return 0; | |
880 | ||
881 | if (!pim_macro_ch_lost_assert(ch) | |
882 | && pim_macro_chisin_joins_or_include(ch)) | |
883 | return 1; | |
884 | } | |
885 | ||
886 | /* | |
887 | * joins (*,G) | |
888 | */ | |
889 | if (starch) { | |
890 | if (PIM_IF_FLAG_TEST_S_G_RPT(starch->upstream->flags)) | |
891 | return 0; | |
892 | ||
893 | if (!pim_macro_ch_lost_assert(starch) | |
894 | && pim_macro_chisin_joins_or_include(starch)) | |
895 | return 1; | |
896 | } | |
897 | ||
898 | return 0; | |
7a3ddda5 DS |
899 | } |
900 | ||
12e41d03 DL |
901 | /* |
902 | Evaluate JoinDesired(S,G): | |
903 | ||
904 | JoinDesired(S,G) is true if there is a downstream (S,G) interface I | |
905 | in the set: | |
906 | ||
907 | inherited_olist(S,G) = | |
908 | joins(S,G) (+) pim_include(S,G) (-) lost_assert(S,G) | |
909 | ||
910 | JoinDesired(S,G) may be affected by changes in the following: | |
911 | ||
912 | pim_ifp->primary_address | |
913 | pim_ifp->pim_dr_addr | |
914 | ch->ifassert_winner_metric | |
915 | ch->ifassert_winner | |
d62a17ae | 916 | ch->local_ifmembership |
12e41d03 DL |
917 | ch->ifjoin_state |
918 | ch->upstream->rpf.source_nexthop.mrib_metric_preference | |
919 | ch->upstream->rpf.source_nexthop.mrib_route_metric | |
920 | ch->upstream->rpf.source_nexthop.interface | |
921 | ||
922 | See also pim_upstream_update_join_desired() below. | |
923 | */ | |
9b29ea95 DS |
924 | int pim_upstream_evaluate_join_desired(struct pim_instance *pim, |
925 | struct pim_upstream *up) | |
12e41d03 | 926 | { |
d62a17ae | 927 | struct interface *ifp; |
d62a17ae | 928 | struct pim_ifchannel *ch, *starch; |
929 | struct pim_upstream *starup = up->parent; | |
930 | int ret = 0; | |
12e41d03 | 931 | |
451fda4f | 932 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 933 | if (!ifp->info) |
934 | continue; | |
c8fc07cb | 935 | |
d62a17ae | 936 | ch = pim_ifchannel_find(ifp, &up->sg); |
c8fc07cb | 937 | |
d62a17ae | 938 | if (starup) |
939 | starch = pim_ifchannel_find(ifp, &starup->sg); | |
940 | else | |
941 | starch = NULL; | |
c8fc07cb | 942 | |
d62a17ae | 943 | if (!ch && !starch) |
944 | continue; | |
12e41d03 | 945 | |
d62a17ae | 946 | ret += pim_upstream_evaluate_join_desired_interface(up, ch, |
947 | starch); | |
948 | } /* scan iface channel list */ | |
12e41d03 | 949 | |
d62a17ae | 950 | return ret; /* false */ |
12e41d03 DL |
951 | } |
952 | ||
953 | /* | |
954 | See also pim_upstream_evaluate_join_desired() above. | |
955 | */ | |
9b29ea95 DS |
956 | void pim_upstream_update_join_desired(struct pim_instance *pim, |
957 | struct pim_upstream *up) | |
12e41d03 | 958 | { |
d62a17ae | 959 | int was_join_desired; /* boolean */ |
960 | int is_join_desired; /* boolean */ | |
961 | ||
962 | was_join_desired = PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED(up->flags); | |
963 | ||
9b29ea95 | 964 | is_join_desired = pim_upstream_evaluate_join_desired(pim, up); |
d62a17ae | 965 | if (is_join_desired) |
966 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED(up->flags); | |
967 | else | |
968 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED(up->flags); | |
969 | ||
970 | /* switched from false to true */ | |
47e3ce59 | 971 | if (is_join_desired && (up->join_state == PIM_UPSTREAM_NOTJOINED)) { |
1eca8576 | 972 | pim_upstream_switch(pim, up, PIM_UPSTREAM_JOINED); |
d62a17ae | 973 | return; |
974 | } | |
975 | ||
976 | /* switched from true to false */ | |
977 | if (!is_join_desired && was_join_desired) { | |
1eca8576 | 978 | pim_upstream_switch(pim, up, PIM_UPSTREAM_NOTJOINED); |
d62a17ae | 979 | return; |
980 | } | |
12e41d03 DL |
981 | } |
982 | ||
983 | /* | |
984 | RFC 4601 4.5.7. Sending (S,G) Join/Prune Messages | |
985 | Transitions from Joined State | |
986 | RPF'(S,G) GenID changes | |
987 | ||
988 | The upstream (S,G) state machine remains in Joined state. If the | |
989 | Join Timer is set to expire in more than t_override seconds, reset | |
990 | it so that it expires after t_override seconds. | |
991 | */ | |
9b29ea95 DS |
992 | void pim_upstream_rpf_genid_changed(struct pim_instance *pim, |
993 | struct in_addr neigh_addr) | |
12e41d03 | 994 | { |
d62a17ae | 995 | struct listnode *up_node; |
996 | struct listnode *up_nextnode; | |
997 | struct pim_upstream *up; | |
998 | ||
999 | /* | |
1000 | * Scan all (S,G) upstreams searching for RPF'(S,G)=neigh_addr | |
1001 | */ | |
9b29ea95 | 1002 | for (ALL_LIST_ELEMENTS(pim->upstream_list, up_node, up_nextnode, up)) { |
d62a17ae | 1003 | |
1004 | if (PIM_DEBUG_TRACE) { | |
1005 | char neigh_str[INET_ADDRSTRLEN]; | |
1006 | char rpf_addr_str[PREFIX_STRLEN]; | |
1007 | pim_inet4_dump("<neigh?>", neigh_addr, neigh_str, | |
1008 | sizeof(neigh_str)); | |
1009 | pim_addr_dump("<rpf?>", &up->rpf.rpf_addr, rpf_addr_str, | |
1010 | sizeof(rpf_addr_str)); | |
1011 | zlog_debug( | |
8dbdb215 | 1012 | "%s: matching neigh=%s against upstream (S,G)=%s[%s] joined=%d rpf_addr=%s", |
996c9314 LB |
1013 | __PRETTY_FUNCTION__, neigh_str, up->sg_str, |
1014 | pim->vrf->name, | |
d62a17ae | 1015 | up->join_state == PIM_UPSTREAM_JOINED, |
1016 | rpf_addr_str); | |
1017 | } | |
1018 | ||
1019 | /* consider only (S,G) upstream in Joined state */ | |
1020 | if (up->join_state != PIM_UPSTREAM_JOINED) | |
1021 | continue; | |
1022 | ||
1023 | /* match RPF'(S,G)=neigh_addr */ | |
1024 | if (up->rpf.rpf_addr.u.prefix4.s_addr != neigh_addr.s_addr) | |
1025 | continue; | |
1026 | ||
1027 | pim_upstream_join_timer_decrease_to_t_override( | |
1028 | "RPF'(S,G) GenID change", up); | |
1029 | } | |
12e41d03 DL |
1030 | } |
1031 | ||
1032 | ||
1033 | void pim_upstream_rpf_interface_changed(struct pim_upstream *up, | |
1034 | struct interface *old_rpf_ifp) | |
1035 | { | |
d62a17ae | 1036 | struct listnode *chnode; |
1037 | struct listnode *chnextnode; | |
1038 | struct pim_ifchannel *ch; | |
1039 | ||
1040 | /* search all ifchannels */ | |
1041 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
1042 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { | |
1043 | if ( | |
1044 | /* RPF_interface(S) was NOT I */ | |
1045 | (old_rpf_ifp == ch->interface) && | |
1046 | /* RPF_interface(S) stopped being I */ | |
1047 | (ch->upstream->rpf.source_nexthop | |
957d93ea SP |
1048 | .interface) && |
1049 | (ch->upstream->rpf.source_nexthop | |
1050 | .interface != ch->interface)) { | |
d62a17ae | 1051 | assert_action_a5(ch); |
1052 | } | |
1053 | } /* PIM_IFASSERT_I_AM_LOSER */ | |
1054 | ||
1055 | pim_ifchannel_update_assert_tracking_desired(ch); | |
1056 | } | |
12e41d03 DL |
1057 | } |
1058 | ||
1059 | void pim_upstream_update_could_assert(struct pim_upstream *up) | |
1060 | { | |
d62a17ae | 1061 | struct listnode *chnode; |
1062 | struct listnode *chnextnode; | |
1063 | struct pim_ifchannel *ch; | |
1064 | ||
1065 | /* scan per-interface (S,G) state */ | |
1066 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
1067 | pim_ifchannel_update_could_assert(ch); | |
1068 | } /* scan iface channel list */ | |
12e41d03 DL |
1069 | } |
1070 | ||
1071 | void pim_upstream_update_my_assert_metric(struct pim_upstream *up) | |
1072 | { | |
d62a17ae | 1073 | struct listnode *chnode; |
1074 | struct listnode *chnextnode; | |
1075 | struct pim_ifchannel *ch; | |
12e41d03 | 1076 | |
d62a17ae | 1077 | /* scan per-interface (S,G) state */ |
1078 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
1079 | pim_ifchannel_update_my_assert_metric(ch); | |
12e41d03 | 1080 | |
d62a17ae | 1081 | } /* scan iface channel list */ |
12e41d03 DL |
1082 | } |
1083 | ||
1084 | static void pim_upstream_update_assert_tracking_desired(struct pim_upstream *up) | |
1085 | { | |
d62a17ae | 1086 | struct listnode *chnode; |
1087 | struct listnode *chnextnode; | |
1088 | struct pim_interface *pim_ifp; | |
1089 | struct pim_ifchannel *ch; | |
1090 | ||
1091 | /* scan per-interface (S,G) state */ | |
1092 | for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) { | |
1093 | if (!ch->interface) | |
1094 | continue; | |
1095 | pim_ifp = ch->interface->info; | |
1096 | if (!pim_ifp) | |
1097 | continue; | |
1098 | ||
1099 | pim_ifchannel_update_assert_tracking_desired(ch); | |
1100 | ||
1101 | } /* scan iface channel list */ | |
12e41d03 | 1102 | } |
f14248dd | 1103 | |
1bf16443 | 1104 | /* When kat is stopped CouldRegister goes to false so we need to |
1105 | * transition the (S, G) on FHR to NI state and remove reg tunnel | |
1106 | * from the OIL */ | |
9b29ea95 DS |
1107 | static void pim_upstream_fhr_kat_expiry(struct pim_instance *pim, |
1108 | struct pim_upstream *up) | |
1bf16443 | 1109 | { |
d62a17ae | 1110 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) |
1111 | return; | |
1112 | ||
1113 | if (PIM_DEBUG_TRACE) | |
1114 | zlog_debug("kat expired on %s; clear fhr reg state", | |
1115 | up->sg_str); | |
1116 | ||
1117 | /* stop reg-stop timer */ | |
1118 | THREAD_OFF(up->t_rs_timer); | |
1119 | /* remove regiface from the OIL if it is there*/ | |
9b29ea95 | 1120 | pim_channel_del_oif(up->channel_oil, pim->regiface, |
d62a17ae | 1121 | PIM_OIF_FLAG_PROTO_PIM); |
1122 | /* clear the register state */ | |
1123 | up->reg_state = PIM_REG_NOINFO; | |
1124 | PIM_UPSTREAM_FLAG_UNSET_FHR(up->flags); | |
1bf16443 | 1125 | } |
1126 | ||
1127 | /* When kat is started CouldRegister can go to true. And if it does we | |
1128 | * need to transition the (S, G) on FHR to JOINED state and add reg tunnel | |
1129 | * to the OIL */ | |
1130 | static void pim_upstream_fhr_kat_start(struct pim_upstream *up) | |
1131 | { | |
d62a17ae | 1132 | if (pim_upstream_could_register(up)) { |
1133 | if (PIM_DEBUG_TRACE) | |
1134 | zlog_debug( | |
1135 | "kat started on %s; set fhr reg state to joined", | |
1136 | up->sg_str); | |
1137 | ||
1138 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); | |
1139 | if (up->reg_state == PIM_REG_NOINFO) | |
1140 | pim_register_join(up); | |
1141 | } | |
1bf16443 | 1142 | } |
1143 | ||
f14248dd DS |
1144 | /* |
1145 | * On an RP, the PMBR value must be cleared when the | |
1146 | * Keepalive Timer expires | |
1bf16443 | 1147 | * KAT expiry indicates that flow is inactive. If the flow was created or |
1148 | * maintained by activity now is the time to deref it. | |
f14248dd | 1149 | */ |
ff459c36 AK |
1150 | struct pim_upstream *pim_upstream_keep_alive_timer_proc( |
1151 | struct pim_upstream *up) | |
f14248dd | 1152 | { |
8e5f97e3 | 1153 | struct pim_instance *pim; |
d62a17ae | 1154 | |
8e5f97e3 | 1155 | pim = up->channel_oil->pim; |
d62a17ae | 1156 | |
820b4a40 AK |
1157 | if (PIM_UPSTREAM_FLAG_TEST_DISABLE_KAT_EXPIRY(up->flags)) { |
1158 | /* if the router is a PIM vxlan encapsulator we prevent expiry | |
1159 | * of KAT as the mroute is pre-setup without any traffic | |
1160 | */ | |
1161 | pim_upstream_keep_alive_timer_start(up, pim->keep_alive_time); | |
ff459c36 | 1162 | return up; |
820b4a40 AK |
1163 | } |
1164 | ||
8e5f97e3 | 1165 | if (I_am_RP(pim, up->sg.grp)) { |
d62a17ae | 1166 | pim_br_clear_pmbr(&up->sg); |
1167 | /* | |
1168 | * We need to do more here :) | |
1169 | * But this is the start. | |
1170 | */ | |
1171 | } | |
1172 | ||
1173 | /* source is no longer active - pull the SA from MSDP's cache */ | |
472ad383 | 1174 | pim_msdp_sa_local_del(pim, &up->sg); |
d62a17ae | 1175 | |
1176 | /* if entry was created because of activity we need to deref it */ | |
1177 | if (PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) { | |
8e5f97e3 | 1178 | pim_upstream_fhr_kat_expiry(pim, up); |
d62a17ae | 1179 | if (PIM_DEBUG_TRACE) |
996c9314 LB |
1180 | zlog_debug( |
1181 | "kat expired on %s[%s]; remove stream reference", | |
1182 | up->sg_str, pim->vrf->name); | |
d62a17ae | 1183 | PIM_UPSTREAM_FLAG_UNSET_SRC_STREAM(up->flags); |
ff459c36 | 1184 | up = pim_upstream_del(pim, up, __PRETTY_FUNCTION__); |
d62a17ae | 1185 | } else if (PIM_UPSTREAM_FLAG_TEST_SRC_LHR(up->flags)) { |
8022df6a DS |
1186 | struct pim_upstream *parent = up->parent; |
1187 | ||
d62a17ae | 1188 | PIM_UPSTREAM_FLAG_UNSET_SRC_LHR(up->flags); |
ff459c36 | 1189 | up = pim_upstream_del(pim, up, __PRETTY_FUNCTION__); |
8022df6a DS |
1190 | |
1191 | if (parent) { | |
996c9314 LB |
1192 | pim_jp_agg_single_upstream_send(&parent->rpf, parent, |
1193 | true); | |
8022df6a | 1194 | } |
d62a17ae | 1195 | } |
1196 | ||
ff459c36 AK |
1197 | return up; |
1198 | } | |
1199 | static int pim_upstream_keep_alive_timer(struct thread *t) | |
1200 | { | |
1201 | struct pim_upstream *up; | |
1202 | ||
1203 | up = THREAD_ARG(t); | |
1204 | ||
1205 | pim_upstream_keep_alive_timer_proc(up); | |
d62a17ae | 1206 | return 0; |
f14248dd DS |
1207 | } |
1208 | ||
d62a17ae | 1209 | void pim_upstream_keep_alive_timer_start(struct pim_upstream *up, uint32_t time) |
f14248dd | 1210 | { |
d62a17ae | 1211 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) { |
1212 | if (PIM_DEBUG_TRACE) | |
1213 | zlog_debug("kat start on %s with no stream reference", | |
1214 | up->sg_str); | |
1215 | } | |
1216 | THREAD_OFF(up->t_ka_timer); | |
36417fcc DS |
1217 | thread_add_timer(router->master, pim_upstream_keep_alive_timer, up, |
1218 | time, &up->t_ka_timer); | |
d62a17ae | 1219 | |
1220 | /* any time keepalive is started against a SG we will have to | |
1221 | * re-evaluate our active source database */ | |
1222 | pim_msdp_sa_local_update(up); | |
1bf16443 | 1223 | } |
1224 | ||
1225 | /* MSDP on RP needs to know if a source is registerable to this RP */ | |
d62a17ae | 1226 | static int pim_upstream_msdp_reg_timer(struct thread *t) |
1bf16443 | 1227 | { |
472ad383 DS |
1228 | struct pim_upstream *up = THREAD_ARG(t); |
1229 | struct pim_instance *pim = up->channel_oil->pim; | |
1bf16443 | 1230 | |
d62a17ae | 1231 | /* source is no longer active - pull the SA from MSDP's cache */ |
472ad383 | 1232 | pim_msdp_sa_local_del(pim, &up->sg); |
d62a17ae | 1233 | return 1; |
1bf16443 | 1234 | } |
d62a17ae | 1235 | void pim_upstream_msdp_reg_timer_start(struct pim_upstream *up) |
1bf16443 | 1236 | { |
d62a17ae | 1237 | THREAD_OFF(up->t_msdp_reg_timer); |
36417fcc | 1238 | thread_add_timer(router->master, pim_upstream_msdp_reg_timer, up, |
d62a17ae | 1239 | PIM_MSDP_REG_RXED_PERIOD, &up->t_msdp_reg_timer); |
1bf16443 | 1240 | |
d62a17ae | 1241 | pim_msdp_sa_local_update(up); |
f14248dd | 1242 | } |
cb40b272 DS |
1243 | |
1244 | /* | |
1245 | * 4.2.1 Last-Hop Switchover to the SPT | |
1246 | * | |
1247 | * In Sparse-Mode PIM, last-hop routers join the shared tree towards the | |
1248 | * RP. Once traffic from sources to joined groups arrives at a last-hop | |
1249 | * router, it has the option of switching to receive the traffic on a | |
1250 | * shortest path tree (SPT). | |
1251 | * | |
1252 | * The decision for a router to switch to the SPT is controlled as | |
1253 | * follows: | |
1254 | * | |
1255 | * void | |
1256 | * CheckSwitchToSpt(S,G) { | |
1257 | * if ( ( pim_include(*,G) (-) pim_exclude(S,G) | |
1258 | * (+) pim_include(S,G) != NULL ) | |
1259 | * AND SwitchToSptDesired(S,G) ) { | |
1260 | * # Note: Restarting the KAT will result in the SPT switch | |
1261 | * set KeepaliveTimer(S,G) to Keepalive_Period | |
1262 | * } | |
1263 | * } | |
1264 | * | |
1265 | * SwitchToSptDesired(S,G) is a policy function that is implementation | |
1266 | * defined. An "infinite threshold" policy can be implemented by making | |
1267 | * SwitchToSptDesired(S,G) return false all the time. A "switch on | |
1268 | * first packet" policy can be implemented by making | |
1269 | * SwitchToSptDesired(S,G) return true once a single packet has been | |
1270 | * received for the source and group. | |
1271 | */ | |
8e5f97e3 DS |
1272 | int pim_upstream_switch_to_spt_desired(struct pim_instance *pim, |
1273 | struct prefix_sg *sg) | |
cb40b272 | 1274 | { |
8e5f97e3 | 1275 | if (I_am_RP(pim, sg->grp)) |
d62a17ae | 1276 | return 1; |
a3b58b4a | 1277 | |
d62a17ae | 1278 | return 0; |
cb40b272 | 1279 | } |
d7259eac | 1280 | |
d62a17ae | 1281 | int pim_upstream_is_sg_rpt(struct pim_upstream *up) |
80d9c3a0 | 1282 | { |
d62a17ae | 1283 | struct listnode *chnode; |
1284 | struct pim_ifchannel *ch; | |
f21597f0 | 1285 | |
d62a17ae | 1286 | for (ALL_LIST_ELEMENTS_RO(up->ifchannels, chnode, ch)) { |
1287 | if (PIM_IF_FLAG_TEST_S_G_RPT(ch->flags)) | |
1288 | return 1; | |
1289 | } | |
e43b8697 | 1290 | |
d62a17ae | 1291 | return 0; |
80d9c3a0 | 1292 | } |
3a66b17b DS |
1293 | /* |
1294 | * After receiving a packet set SPTbit: | |
1295 | * void | |
1296 | * Update_SPTbit(S,G,iif) { | |
1297 | * if ( iif == RPF_interface(S) | |
1298 | * AND JoinDesired(S,G) == TRUE | |
1299 | * AND ( DirectlyConnected(S) == TRUE | |
1300 | * OR RPF_interface(S) != RPF_interface(RP(G)) | |
1301 | * OR inherited_olist(S,G,rpt) == NULL | |
1302 | * OR ( ( RPF'(S,G) == RPF'(*,G) ) AND | |
1303 | * ( RPF'(S,G) != NULL ) ) | |
1304 | * OR ( I_Am_Assert_Loser(S,G,iif) ) { | |
1305 | * Set SPTbit(S,G) to TRUE | |
1306 | * } | |
1307 | * } | |
1308 | */ | |
d62a17ae | 1309 | void pim_upstream_set_sptbit(struct pim_upstream *up, |
1310 | struct interface *incoming) | |
3a66b17b | 1311 | { |
d62a17ae | 1312 | struct pim_upstream *starup = up->parent; |
1313 | ||
1314 | // iif == RPF_interfvace(S) | |
1315 | if (up->rpf.source_nexthop.interface != incoming) { | |
1316 | if (PIM_DEBUG_TRACE) | |
1317 | zlog_debug( | |
1318 | "%s: Incoming Interface: %s is different than RPF_interface(S) %s", | |
1319 | __PRETTY_FUNCTION__, incoming->name, | |
1320 | up->rpf.source_nexthop.interface->name); | |
1321 | return; | |
1322 | } | |
1323 | ||
1324 | // AND JoinDesired(S,G) == TRUE | |
6f0f014f DS |
1325 | if (!pim_upstream_evaluate_join_desired(up->channel_oil->pim, up)) { |
1326 | if (PIM_DEBUG_TRACE) | |
1327 | zlog_debug("%s: %s Join is not Desired", | |
1328 | __PRETTY_FUNCTION__, up->sg_str); | |
1329 | return; | |
1330 | } | |
d62a17ae | 1331 | |
1332 | // DirectlyConnected(S) == TRUE | |
1333 | if (pim_if_connected_to_source(up->rpf.source_nexthop.interface, | |
1334 | up->sg.src)) { | |
1335 | if (PIM_DEBUG_TRACE) | |
1336 | zlog_debug("%s: %s is directly connected to the source", | |
1337 | __PRETTY_FUNCTION__, up->sg_str); | |
1338 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
1339 | return; | |
1340 | } | |
1341 | ||
1342 | // OR RPF_interface(S) != RPF_interface(RP(G)) | |
1343 | if (!starup | |
1344 | || up->rpf.source_nexthop | |
1345 | .interface != starup->rpf.source_nexthop.interface) { | |
2de05c60 DS |
1346 | struct pim_upstream *starup = up->parent; |
1347 | ||
d62a17ae | 1348 | if (PIM_DEBUG_TRACE) |
1349 | zlog_debug( | |
1350 | "%s: %s RPF_interface(S) != RPF_interface(RP(G))", | |
1351 | __PRETTY_FUNCTION__, up->sg_str); | |
1352 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
2de05c60 DS |
1353 | |
1354 | pim_jp_agg_single_upstream_send(&starup->rpf, starup, true); | |
d62a17ae | 1355 | return; |
1356 | } | |
1357 | ||
1358 | // OR inherited_olist(S,G,rpt) == NULL | |
1359 | if (pim_upstream_is_sg_rpt(up) | |
1360 | && pim_upstream_empty_inherited_olist(up)) { | |
1361 | if (PIM_DEBUG_TRACE) | |
1362 | zlog_debug("%s: %s OR inherited_olist(S,G,rpt) == NULL", | |
1363 | __PRETTY_FUNCTION__, up->sg_str); | |
1364 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
1365 | return; | |
1366 | } | |
1367 | ||
1368 | // OR ( ( RPF'(S,G) == RPF'(*,G) ) AND | |
1369 | // ( RPF'(S,G) != NULL ) ) | |
1370 | if (up->parent && pim_rpf_is_same(&up->rpf, &up->parent->rpf)) { | |
1371 | if (PIM_DEBUG_TRACE) | |
1372 | zlog_debug("%s: %s RPF'(S,G) is the same as RPF'(*,G)", | |
1373 | __PRETTY_FUNCTION__, up->sg_str); | |
1374 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
1375 | return; | |
1376 | } | |
1377 | ||
1378 | return; | |
3a66b17b | 1379 | } |
80d9c3a0 | 1380 | |
d62a17ae | 1381 | const char *pim_upstream_state2str(enum pim_upstream_state join_state) |
d7259eac | 1382 | { |
d62a17ae | 1383 | switch (join_state) { |
1384 | case PIM_UPSTREAM_NOTJOINED: | |
1385 | return "NotJoined"; | |
1386 | break; | |
1387 | case PIM_UPSTREAM_JOINED: | |
1388 | return "Joined"; | |
1389 | break; | |
1390 | } | |
1391 | return "Unknown"; | |
d7259eac | 1392 | } |
627ed2a3 | 1393 | |
d62a17ae | 1394 | const char *pim_reg_state2str(enum pim_reg_state reg_state, char *state_str) |
e0e127b0 | 1395 | { |
d62a17ae | 1396 | switch (reg_state) { |
1397 | case PIM_REG_NOINFO: | |
1398 | strcpy(state_str, "RegNoInfo"); | |
1399 | break; | |
1400 | case PIM_REG_JOIN: | |
1401 | strcpy(state_str, "RegJoined"); | |
1402 | break; | |
1403 | case PIM_REG_JOIN_PENDING: | |
1404 | strcpy(state_str, "RegJoinPend"); | |
1405 | break; | |
1406 | case PIM_REG_PRUNE: | |
1407 | strcpy(state_str, "RegPrune"); | |
1408 | break; | |
1409 | default: | |
1410 | strcpy(state_str, "RegUnknown"); | |
1411 | } | |
1412 | return state_str; | |
e0e127b0 | 1413 | } |
1414 | ||
d62a17ae | 1415 | static int pim_upstream_register_stop_timer(struct thread *t) |
627ed2a3 | 1416 | { |
d62a17ae | 1417 | struct pim_interface *pim_ifp; |
8e5f97e3 | 1418 | struct pim_instance *pim; |
d62a17ae | 1419 | struct pim_upstream *up; |
1420 | struct pim_rpf *rpg; | |
1421 | struct ip ip_hdr; | |
1422 | up = THREAD_ARG(t); | |
8e5f97e3 | 1423 | pim = up->channel_oil->pim; |
d62a17ae | 1424 | |
1425 | if (PIM_DEBUG_TRACE) { | |
1426 | char state_str[PIM_REG_STATE_STR_LEN]; | |
8dbdb215 DS |
1427 | zlog_debug("%s: (S,G)=%s[%s] upstream register stop timer %s", |
1428 | __PRETTY_FUNCTION__, up->sg_str, pim->vrf->name, | |
d62a17ae | 1429 | pim_reg_state2str(up->reg_state, state_str)); |
1430 | } | |
1431 | ||
1432 | switch (up->reg_state) { | |
1433 | case PIM_REG_JOIN_PENDING: | |
1434 | up->reg_state = PIM_REG_JOIN; | |
8e5f97e3 | 1435 | pim_channel_add_oif(up->channel_oil, pim->regiface, |
d62a17ae | 1436 | PIM_OIF_FLAG_PROTO_PIM); |
1437 | break; | |
1438 | case PIM_REG_JOIN: | |
1439 | break; | |
1440 | case PIM_REG_PRUNE: | |
957d93ea SP |
1441 | if (!up->rpf.source_nexthop.interface) { |
1442 | if (PIM_DEBUG_TRACE) | |
1443 | zlog_debug("%s: up %s RPF is not present", | |
1444 | __PRETTY_FUNCTION__, up->sg_str); | |
1445 | return 0; | |
1446 | } | |
1447 | ||
d62a17ae | 1448 | pim_ifp = up->rpf.source_nexthop.interface->info; |
1449 | if (!pim_ifp) { | |
1450 | if (PIM_DEBUG_TRACE) | |
1451 | zlog_debug( | |
1452 | "%s: Interface: %s is not configured for pim", | |
1453 | __PRETTY_FUNCTION__, | |
1454 | up->rpf.source_nexthop.interface->name); | |
1455 | return 0; | |
1456 | } | |
1457 | up->reg_state = PIM_REG_JOIN_PENDING; | |
1458 | pim_upstream_start_register_stop_timer(up, 1); | |
1459 | ||
1460 | if (((up->channel_oil->cc.lastused / 100) | |
2f5b0028 | 1461 | > pim->keep_alive_time) |
d9c9a9ee | 1462 | && (I_am_RP(pim_ifp->pim, up->sg.grp))) { |
d62a17ae | 1463 | if (PIM_DEBUG_TRACE) |
1464 | zlog_debug( | |
1465 | "%s: Stop sending the register, because I am the RP and we haven't seen a packet in a while", | |
1466 | __PRETTY_FUNCTION__); | |
1467 | return 0; | |
1468 | } | |
d9c9a9ee | 1469 | rpg = RP(pim_ifp->pim, up->sg.grp); |
1e7a3a2a DS |
1470 | if (!rpg) { |
1471 | if (PIM_DEBUG_TRACE) | |
1472 | zlog_debug( | |
1473 | "%s: Cannot send register for %s no RPF to the RP", | |
1474 | __PRETTY_FUNCTION__, up->sg_str); | |
1475 | return 0; | |
1476 | } | |
d62a17ae | 1477 | memset(&ip_hdr, 0, sizeof(struct ip)); |
1478 | ip_hdr.ip_p = PIM_IP_PROTO_PIM; | |
1479 | ip_hdr.ip_hl = 5; | |
1480 | ip_hdr.ip_v = 4; | |
1481 | ip_hdr.ip_src = up->sg.src; | |
1482 | ip_hdr.ip_dst = up->sg.grp; | |
1483 | ip_hdr.ip_len = htons(20); | |
1484 | // checksum is broken | |
1485 | pim_register_send((uint8_t *)&ip_hdr, sizeof(struct ip), | |
1486 | pim_ifp->primary_address, rpg, 1, up); | |
1487 | break; | |
1488 | default: | |
1489 | break; | |
70e7fda8 | 1490 | } |
d62a17ae | 1491 | |
1492 | return 0; | |
627ed2a3 DS |
1493 | } |
1494 | ||
d62a17ae | 1495 | void pim_upstream_start_register_stop_timer(struct pim_upstream *up, |
1496 | int null_register) | |
627ed2a3 | 1497 | { |
d62a17ae | 1498 | uint32_t time; |
1499 | ||
1500 | THREAD_TIMER_OFF(up->t_rs_timer); | |
1501 | ||
1502 | if (!null_register) { | |
1503 | uint32_t lower = (0.5 * PIM_REGISTER_SUPPRESSION_PERIOD); | |
1504 | uint32_t upper = (1.5 * PIM_REGISTER_SUPPRESSION_PERIOD); | |
1505 | time = lower + (random() % (upper - lower + 1)) | |
1506 | - PIM_REGISTER_PROBE_PERIOD; | |
1507 | } else | |
1508 | time = PIM_REGISTER_PROBE_PERIOD; | |
1509 | ||
1510 | if (PIM_DEBUG_TRACE) { | |
1511 | zlog_debug( | |
1512 | "%s: (S,G)=%s Starting upstream register stop timer %d", | |
1513 | __PRETTY_FUNCTION__, up->sg_str, time); | |
1514 | } | |
36417fcc DS |
1515 | thread_add_timer(router->master, pim_upstream_register_stop_timer, up, |
1516 | time, &up->t_rs_timer); | |
627ed2a3 | 1517 | } |
4fdc8f36 | 1518 | |
9b29ea95 DS |
1519 | int pim_upstream_inherited_olist_decide(struct pim_instance *pim, |
1520 | struct pim_upstream *up) | |
4fdc8f36 | 1521 | { |
d62a17ae | 1522 | struct interface *ifp; |
1523 | struct pim_interface *pim_ifp = NULL; | |
1524 | struct pim_ifchannel *ch, *starch; | |
d62a17ae | 1525 | struct pim_upstream *starup = up->parent; |
1526 | int output_intf = 0; | |
1527 | ||
1528 | if (up->rpf.source_nexthop.interface) | |
1529 | pim_ifp = up->rpf.source_nexthop.interface->info; | |
1530 | else { | |
1531 | if (PIM_DEBUG_TRACE) | |
1532 | zlog_debug("%s: up %s RPF is not present", | |
1533 | __PRETTY_FUNCTION__, up->sg_str); | |
1534 | } | |
1535 | if (pim_ifp && !up->channel_oil) | |
611925dc DS |
1536 | up->channel_oil = pim_channel_oil_add( |
1537 | pim, &up->sg, pim_ifp->mroute_vif_index); | |
d62a17ae | 1538 | |
451fda4f | 1539 | FOR_ALL_INTERFACES (pim->vrf, ifp) { |
d62a17ae | 1540 | if (!ifp->info) |
1541 | continue; | |
1542 | ||
1543 | ch = pim_ifchannel_find(ifp, &up->sg); | |
1544 | ||
1545 | if (starup) | |
1546 | starch = pim_ifchannel_find(ifp, &starup->sg); | |
1547 | else | |
1548 | starch = NULL; | |
1549 | ||
1550 | if (!ch && !starch) | |
1551 | continue; | |
1552 | ||
1553 | if (pim_upstream_evaluate_join_desired_interface(up, ch, | |
1554 | starch)) { | |
1555 | int flag = PIM_OIF_FLAG_PROTO_PIM; | |
1556 | ||
1557 | if (!ch) | |
1558 | flag = PIM_OIF_FLAG_PROTO_STAR; | |
1559 | ||
1560 | pim_channel_add_oif(up->channel_oil, ifp, flag); | |
1561 | output_intf++; | |
1562 | } | |
1563 | } | |
1564 | ||
1565 | return output_intf; | |
b5183fd1 DS |
1566 | } |
1567 | ||
1568 | /* | |
1569 | * For a given upstream, determine the inherited_olist | |
1570 | * and apply it. | |
1571 | * | |
1572 | * inherited_olist(S,G,rpt) = | |
1573 | * ( joins(*,*,RP(G)) (+) joins(*,G) (-) prunes(S,G,rpt) ) | |
1574 | * (+) ( pim_include(*,G) (-) pim_exclude(S,G)) | |
1575 | * (-) ( lost_assert(*,G) (+) lost_assert(S,G,rpt) ) | |
1576 | * | |
1577 | * inherited_olist(S,G) = | |
1578 | * inherited_olist(S,G,rpt) (+) | |
1579 | * joins(S,G) (+) pim_include(S,G) (-) lost_assert(S,G) | |
1580 | * | |
1581 | * return 1 if there are any output interfaces | |
1582 | * return 0 if there are not any output interfaces | |
1583 | */ | |
9b29ea95 DS |
1584 | int pim_upstream_inherited_olist(struct pim_instance *pim, |
1585 | struct pim_upstream *up) | |
b5183fd1 | 1586 | { |
9b29ea95 | 1587 | int output_intf = pim_upstream_inherited_olist_decide(pim, up); |
d62a17ae | 1588 | |
1589 | /* | |
1590 | * If we have output_intf switch state to Join and work like normal | |
1591 | * If we don't have an output_intf that means we are probably a | |
1592 | * switch on a stick so turn on forwarding to just accept the | |
1593 | * incoming packets so we don't bother the other stuff! | |
1594 | */ | |
1595 | if (output_intf) | |
1eca8576 | 1596 | pim_upstream_switch(pim, up, PIM_UPSTREAM_JOINED); |
d62a17ae | 1597 | else |
1598 | forward_on(up); | |
1599 | ||
1600 | return output_intf; | |
4fdc8f36 | 1601 | } |
d3dd1804 | 1602 | |
d62a17ae | 1603 | int pim_upstream_empty_inherited_olist(struct pim_upstream *up) |
80d9c3a0 | 1604 | { |
d62a17ae | 1605 | return pim_channel_oil_empty(up->channel_oil); |
80d9c3a0 DS |
1606 | } |
1607 | ||
d3dd1804 DS |
1608 | /* |
1609 | * When we have a new neighbor, | |
1610 | * find upstreams that don't have their rpf_addr | |
1611 | * set and see if the new neighbor allows | |
1612 | * the join to be sent | |
1613 | */ | |
9b29ea95 | 1614 | void pim_upstream_find_new_rpf(struct pim_instance *pim) |
d3dd1804 | 1615 | { |
d62a17ae | 1616 | struct listnode *up_node; |
1617 | struct listnode *up_nextnode; | |
1618 | struct pim_upstream *up; | |
1619 | ||
1620 | /* | |
1621 | * Scan all (S,G) upstreams searching for RPF'(S,G)=neigh_addr | |
1622 | */ | |
9b29ea95 | 1623 | for (ALL_LIST_ELEMENTS(pim->upstream_list, up_node, up_nextnode, up)) { |
957d93ea SP |
1624 | if (up->upstream_addr.s_addr == INADDR_ANY) { |
1625 | if (PIM_DEBUG_TRACE) | |
1626 | zlog_debug( | |
1627 | "%s: RP not configured for Upstream %s", | |
1628 | __PRETTY_FUNCTION__, up->sg_str); | |
1629 | continue; | |
1630 | } | |
1631 | ||
d62a17ae | 1632 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) { |
1633 | if (PIM_DEBUG_TRACE) | |
1634 | zlog_debug( | |
957d93ea SP |
1635 | "%s: Upstream %s without a path to send join, checking", |
1636 | __PRETTY_FUNCTION__, up->sg_str); | |
2002dcdb | 1637 | pim_rpf_update(pim, up, NULL, 1); |
d62a17ae | 1638 | } |
d3dd1804 | 1639 | } |
d3dd1804 | 1640 | } |
0f588989 | 1641 | |
7c591950 | 1642 | unsigned int pim_upstream_hash_key(void *arg) |
0f588989 | 1643 | { |
d62a17ae | 1644 | struct pim_upstream *up = (struct pim_upstream *)arg; |
0f588989 | 1645 | |
d62a17ae | 1646 | return jhash_2words(up->sg.src.s_addr, up->sg.grp.s_addr, 0); |
0f588989 DS |
1647 | } |
1648 | ||
9b29ea95 | 1649 | void pim_upstream_terminate(struct pim_instance *pim) |
0f588989 | 1650 | { |
172e45dc DS |
1651 | struct pim_upstream *up; |
1652 | ||
1653 | if (pim->upstream_list) { | |
1d483838 DS |
1654 | while (pim->upstream_list->count) { |
1655 | up = listnode_head(pim->upstream_list); | |
172e45dc | 1656 | pim_upstream_del(pim, up, __PRETTY_FUNCTION__); |
1d483838 | 1657 | } |
172e45dc | 1658 | |
6a154c88 | 1659 | list_delete(&pim->upstream_list); |
172e45dc | 1660 | } |
0f588989 | 1661 | |
9b29ea95 DS |
1662 | if (pim->upstream_hash) |
1663 | hash_free(pim->upstream_hash); | |
1664 | pim->upstream_hash = NULL; | |
0c68972d DS |
1665 | |
1666 | if (pim->upstream_sg_wheel) | |
1667 | wheel_delete(pim->upstream_sg_wheel); | |
1668 | pim->upstream_sg_wheel = NULL; | |
0f588989 DS |
1669 | } |
1670 | ||
74df8d6d | 1671 | bool pim_upstream_equal(const void *arg1, const void *arg2) |
0f588989 | 1672 | { |
d62a17ae | 1673 | const struct pim_upstream *up1 = (const struct pim_upstream *)arg1; |
1674 | const struct pim_upstream *up2 = (const struct pim_upstream *)arg2; | |
0f588989 | 1675 | |
d62a17ae | 1676 | if ((up1->sg.grp.s_addr == up2->sg.grp.s_addr) |
1677 | && (up1->sg.src.s_addr == up2->sg.src.s_addr)) | |
74df8d6d | 1678 | return true; |
0f588989 | 1679 | |
74df8d6d | 1680 | return false; |
0f588989 DS |
1681 | } |
1682 | ||
1bf16443 | 1683 | /* rfc4601:section-4.2:"Data Packet Forwarding Rules" defines |
1684 | * the cases where kat has to be restarted on rxing traffic - | |
1685 | * | |
1686 | * if( DirectlyConnected(S) == TRUE AND iif == RPF_interface(S) ) { | |
1687 | * set KeepaliveTimer(S,G) to Keepalive_Period | |
1688 | * # Note: a register state transition or UpstreamJPState(S,G) | |
1689 | * # transition may happen as a result of restarting | |
1690 | * # KeepaliveTimer, and must be dealt with here. | |
1691 | * } | |
1692 | * if( iif == RPF_interface(S) AND UpstreamJPState(S,G) == Joined AND | |
1693 | * inherited_olist(S,G) != NULL ) { | |
1694 | * set KeepaliveTimer(S,G) to Keepalive_Period | |
1695 | * } | |
1696 | */ | |
1697 | static bool pim_upstream_kat_start_ok(struct pim_upstream *up) | |
1698 | { | |
8e5f97e3 DS |
1699 | struct pim_instance *pim = up->channel_oil->pim; |
1700 | ||
d62a17ae | 1701 | /* "iif == RPF_interface(S)" check has to be done by the kernel or hw |
1702 | * so we will skip that here */ | |
957d93ea SP |
1703 | if (up->rpf.source_nexthop.interface && |
1704 | pim_if_connected_to_source(up->rpf.source_nexthop.interface, | |
d62a17ae | 1705 | up->sg.src)) { |
1706 | return true; | |
1707 | } | |
1708 | ||
1709 | if ((up->join_state == PIM_UPSTREAM_JOINED) | |
1710 | && !pim_upstream_empty_inherited_olist(up)) { | |
1711 | /* XXX: I have added this RP check just for 3.2 and it's a | |
1712 | * digression from | |
1713 | * what rfc-4601 says. Till now we were only running KAT on FHR | |
1714 | * and RP and | |
1715 | * there is some angst around making the change to run it all | |
1716 | * routers that | |
1717 | * maintain the (S, G) state. This is tracked via CM-13601 and | |
1718 | * MUST be | |
1719 | * removed to handle spt turn-arounds correctly in a 3-tier clos | |
1720 | */ | |
8e5f97e3 | 1721 | if (I_am_RP(pim, up->sg.grp)) |
d62a17ae | 1722 | return true; |
1723 | } | |
1724 | ||
1725 | return false; | |
1bf16443 | 1726 | } |
1727 | ||
9c5e4d62 DS |
1728 | /* |
1729 | * Code to check and see if we've received packets on a S,G mroute | |
1730 | * and if so to set the SPT bit appropriately | |
1731 | */ | |
d62a17ae | 1732 | static void pim_upstream_sg_running(void *arg) |
9c5e4d62 | 1733 | { |
d62a17ae | 1734 | struct pim_upstream *up = (struct pim_upstream *)arg; |
8e5f97e3 | 1735 | struct pim_instance *pim = up->channel_oil->pim; |
d62a17ae | 1736 | |
1737 | // No packet can have arrived here if this is the case | |
8e5f97e3 | 1738 | if (!up->channel_oil->installed) { |
d62a17ae | 1739 | if (PIM_DEBUG_TRACE) |
41714081 | 1740 | zlog_debug("%s: %s%s is not installed in mroute", |
996c9314 LB |
1741 | __PRETTY_FUNCTION__, up->sg_str, |
1742 | pim->vrf->name); | |
d62a17ae | 1743 | return; |
1744 | } | |
1745 | ||
1746 | /* | |
1747 | * This is a bit of a hack | |
1748 | * We've noted that we should rescan but | |
1749 | * we've missed the window for doing so in | |
1750 | * pim_zebra.c for some reason. I am | |
1751 | * only doing this at this point in time | |
1752 | * to get us up and working for the moment | |
1753 | */ | |
1754 | if (up->channel_oil->oil_inherited_rescan) { | |
1755 | if (PIM_DEBUG_TRACE) | |
1756 | zlog_debug( | |
8dbdb215 | 1757 | "%s: Handling unscanned inherited_olist for %s[%s]", |
996c9314 LB |
1758 | __PRETTY_FUNCTION__, up->sg_str, |
1759 | pim->vrf->name); | |
8e5f97e3 | 1760 | pim_upstream_inherited_olist_decide(pim, up); |
d62a17ae | 1761 | up->channel_oil->oil_inherited_rescan = 0; |
1762 | } | |
1763 | pim_mroute_update_counters(up->channel_oil); | |
1764 | ||
1765 | // Have we seen packets? | |
1766 | if ((up->channel_oil->cc.oldpktcnt >= up->channel_oil->cc.pktcnt) | |
1767 | && (up->channel_oil->cc.lastused / 100 > 30)) { | |
1768 | if (PIM_DEBUG_TRACE) { | |
1769 | zlog_debug( | |
8dbdb215 DS |
1770 | "%s[%s]: %s old packet count is equal or lastused is greater than 30, (%ld,%ld,%lld)", |
1771 | __PRETTY_FUNCTION__, up->sg_str, pim->vrf->name, | |
d62a17ae | 1772 | up->channel_oil->cc.oldpktcnt, |
1773 | up->channel_oil->cc.pktcnt, | |
1774 | up->channel_oil->cc.lastused / 100); | |
1775 | } | |
1776 | return; | |
e43b8697 | 1777 | } |
d62a17ae | 1778 | |
1779 | if (pim_upstream_kat_start_ok(up)) { | |
1780 | /* Add a source reference to the stream if | |
1781 | * one doesn't already exist */ | |
1782 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) { | |
1783 | if (PIM_DEBUG_TRACE) | |
1784 | zlog_debug( | |
8dbdb215 DS |
1785 | "source reference created on kat restart %s[%s]", |
1786 | up->sg_str, pim->vrf->name); | |
d62a17ae | 1787 | |
1788 | pim_upstream_ref(up, PIM_UPSTREAM_FLAG_MASK_SRC_STREAM, | |
1789 | __PRETTY_FUNCTION__); | |
1790 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); | |
1791 | pim_upstream_fhr_kat_start(up); | |
1792 | } | |
19b807ca | 1793 | pim_upstream_keep_alive_timer_start(up, pim->keep_alive_time); |
d62a17ae | 1794 | } else if (PIM_UPSTREAM_FLAG_TEST_SRC_LHR(up->flags)) |
19b807ca | 1795 | pim_upstream_keep_alive_timer_start(up, pim->keep_alive_time); |
d62a17ae | 1796 | |
957d93ea SP |
1797 | if ((up->sptbit != PIM_UPSTREAM_SPTBIT_TRUE) && |
1798 | (up->rpf.source_nexthop.interface)) { | |
d62a17ae | 1799 | pim_upstream_set_sptbit(up, up->rpf.source_nexthop.interface); |
850a9f99 | 1800 | } |
d62a17ae | 1801 | return; |
9c5e4d62 DS |
1802 | } |
1803 | ||
9b29ea95 | 1804 | void pim_upstream_add_lhr_star_pimreg(struct pim_instance *pim) |
a7b2b1e2 | 1805 | { |
d62a17ae | 1806 | struct pim_upstream *up; |
1807 | struct listnode *node; | |
a7b2b1e2 | 1808 | |
9b29ea95 | 1809 | for (ALL_LIST_ELEMENTS_RO(pim->upstream_list, node, up)) { |
d62a17ae | 1810 | if (up->sg.src.s_addr != INADDR_ANY) |
1811 | continue; | |
a7b2b1e2 | 1812 | |
d62a17ae | 1813 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(up->flags)) |
1814 | continue; | |
a7b2b1e2 | 1815 | |
9b29ea95 | 1816 | pim_channel_add_oif(up->channel_oil, pim->regiface, |
d62a17ae | 1817 | PIM_OIF_FLAG_PROTO_IGMP); |
1818 | } | |
a7b2b1e2 DS |
1819 | } |
1820 | ||
9b29ea95 DS |
1821 | void pim_upstream_spt_prefix_list_update(struct pim_instance *pim, |
1822 | struct prefix_list *pl) | |
df94f9a9 | 1823 | { |
d62a17ae | 1824 | const char *pname = prefix_list_name(pl); |
df94f9a9 | 1825 | |
9b29ea95 DS |
1826 | if (pim->spt.plist && strcmp(pim->spt.plist, pname) == 0) { |
1827 | pim_upstream_remove_lhr_star_pimreg(pim, pname); | |
d62a17ae | 1828 | } |
df94f9a9 DS |
1829 | } |
1830 | ||
1831 | /* | |
1832 | * nlist -> The new prefix list | |
1833 | * | |
1834 | * Per Group Application of pimreg to the OIL | |
1835 | * If the prefix list tells us DENY then | |
1836 | * we need to Switchover to SPT immediate | |
1837 | * so add the pimreg. | |
1838 | * If the prefix list tells us to ACCEPT than | |
1839 | * we need to Never do the SPT so remove | |
1840 | * the interface | |
1841 | * | |
1842 | */ | |
9b29ea95 DS |
1843 | void pim_upstream_remove_lhr_star_pimreg(struct pim_instance *pim, |
1844 | const char *nlist) | |
a7b2b1e2 | 1845 | { |
d62a17ae | 1846 | struct pim_upstream *up; |
1847 | struct listnode *node; | |
1848 | struct prefix_list *np; | |
1849 | struct prefix g; | |
1850 | enum prefix_list_type apply_new; | |
1851 | ||
1852 | np = prefix_list_lookup(AFI_IP, nlist); | |
1853 | ||
1854 | g.family = AF_INET; | |
1855 | g.prefixlen = IPV4_MAX_PREFIXLEN; | |
1856 | ||
9b29ea95 | 1857 | for (ALL_LIST_ELEMENTS_RO(pim->upstream_list, node, up)) { |
d62a17ae | 1858 | if (up->sg.src.s_addr != INADDR_ANY) |
1859 | continue; | |
1860 | ||
1861 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(up->flags)) | |
1862 | continue; | |
1863 | ||
1864 | if (!nlist) { | |
9b29ea95 | 1865 | pim_channel_del_oif(up->channel_oil, pim->regiface, |
d62a17ae | 1866 | PIM_OIF_FLAG_PROTO_IGMP); |
1867 | continue; | |
1868 | } | |
1869 | g.u.prefix4 = up->sg.grp; | |
1870 | apply_new = prefix_list_apply(np, &g); | |
1871 | if (apply_new == PREFIX_DENY) | |
9b29ea95 | 1872 | pim_channel_add_oif(up->channel_oil, pim->regiface, |
d62a17ae | 1873 | PIM_OIF_FLAG_PROTO_IGMP); |
1874 | else | |
9b29ea95 | 1875 | pim_channel_del_oif(up->channel_oil, pim->regiface, |
d62a17ae | 1876 | PIM_OIF_FLAG_PROTO_IGMP); |
1877 | } | |
a7b2b1e2 DS |
1878 | } |
1879 | ||
9b29ea95 | 1880 | void pim_upstream_init(struct pim_instance *pim) |
0f588989 | 1881 | { |
c2cfa843 | 1882 | char name[64]; |
9fb302f4 | 1883 | |
c2cfa843 DS |
1884 | snprintf(name, 64, "PIM %s Timer Wheel", |
1885 | pim->vrf->name); | |
9b29ea95 | 1886 | pim->upstream_sg_wheel = |
36417fcc | 1887 | wheel_init(router->master, 31000, 100, pim_upstream_hash_key, |
c2cfa843 | 1888 | pim_upstream_sg_running, name); |
9fb302f4 | 1889 | |
c2cfa843 DS |
1890 | snprintf(name, 64, "PIM %s Upstream Hash", |
1891 | pim->vrf->name); | |
9b29ea95 | 1892 | pim->upstream_hash = hash_create_size(8192, pim_upstream_hash_key, |
c2cfa843 | 1893 | pim_upstream_equal, name); |
d62a17ae | 1894 | |
9b29ea95 | 1895 | pim->upstream_list = list_new(); |
9b29ea95 | 1896 | pim->upstream_list->cmp = pim_upstream_compare; |
0f588989 | 1897 | } |