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12e41d03 DL |
1 | /* |
2 | PIM for Quagga | |
3 | Copyright (C) 2008 Everton da Silva Marques | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, but | |
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; see the file COPYING; if not, write to the | |
17 | Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
18 | MA 02110-1301 USA | |
19 | ||
12e41d03 DL |
20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "zebra/rib.h" | |
25 | ||
26 | #include "log.h" | |
27 | #include "zclient.h" | |
28 | #include "memory.h" | |
29 | #include "thread.h" | |
30 | #include "linklist.h" | |
dfe43e25 DW |
31 | #include "vty.h" |
32 | #include "plist.h" | |
0f588989 DS |
33 | #include "hash.h" |
34 | #include "jhash.h" | |
9c5e4d62 | 35 | #include "wheel.h" |
12e41d03 DL |
36 | |
37 | #include "pimd.h" | |
38 | #include "pim_pim.h" | |
39 | #include "pim_str.h" | |
40 | #include "pim_time.h" | |
41 | #include "pim_iface.h" | |
42 | #include "pim_join.h" | |
43 | #include "pim_zlookup.h" | |
44 | #include "pim_upstream.h" | |
45 | #include "pim_ifchannel.h" | |
46 | #include "pim_neighbor.h" | |
47 | #include "pim_rpf.h" | |
48 | #include "pim_zebra.h" | |
49 | #include "pim_oil.h" | |
50 | #include "pim_macro.h" | |
8f5f5e91 | 51 | #include "pim_rp.h" |
f14248dd | 52 | #include "pim_br.h" |
627ed2a3 | 53 | #include "pim_register.h" |
3c72d654 | 54 | #include "pim_msdp.h" |
12e41d03 | 55 | |
0f588989 DS |
56 | struct hash *pim_upstream_hash = NULL; |
57 | struct list *pim_upstream_list = NULL; | |
9c5e4d62 | 58 | struct timer_wheel *pim_upstream_sg_wheel = NULL; |
0f588989 | 59 | |
12e41d03 DL |
60 | static void join_timer_start(struct pim_upstream *up); |
61 | static void pim_upstream_update_assert_tracking_desired(struct pim_upstream *up); | |
62 | ||
cfa91a87 DS |
63 | /* |
64 | * A (*,G) or a (*,*) is going away | |
65 | * remove the parent pointer from | |
66 | * those pointing at us | |
67 | */ | |
68 | static void | |
69 | pim_upstream_remove_children (struct pim_upstream *up) | |
70 | { | |
cfa91a87 DS |
71 | struct pim_upstream *child; |
72 | ||
03417ccd | 73 | if (!up->sources) |
cfa91a87 DS |
74 | return; |
75 | ||
03417ccd | 76 | while (!list_isempty (up->sources)) |
cfa91a87 | 77 | { |
03417ccd DS |
78 | child = listnode_head (up->sources); |
79 | child->parent = NULL; | |
80 | listnode_delete (up->sources, child); | |
cfa91a87 DS |
81 | } |
82 | } | |
83 | ||
84 | /* | |
85 | * A (*,G) or a (*,*) is being created | |
86 | * Find the children that would point | |
87 | * at us. | |
88 | */ | |
89 | static void | |
90 | pim_upstream_find_new_children (struct pim_upstream *up) | |
91 | { | |
92 | struct pim_upstream *child; | |
93 | struct listnode *ch_node; | |
94 | ||
4ed0af70 DS |
95 | if ((up->sg.src.s_addr != INADDR_ANY) && |
96 | (up->sg.grp.s_addr != INADDR_ANY)) | |
cfa91a87 DS |
97 | return; |
98 | ||
4ed0af70 DS |
99 | if ((up->sg.src.s_addr == INADDR_ANY) && |
100 | (up->sg.grp.s_addr == INADDR_ANY)) | |
cfa91a87 DS |
101 | return; |
102 | ||
0f588989 | 103 | for (ALL_LIST_ELEMENTS_RO (pim_upstream_list, ch_node, child)) |
cfa91a87 | 104 | { |
4ed0af70 | 105 | if ((up->sg.grp.s_addr != INADDR_ANY) && |
0f588989 | 106 | (child->sg.grp.s_addr == up->sg.grp.s_addr) && |
cfa91a87 | 107 | (child != up)) |
03417ccd DS |
108 | { |
109 | child->parent = up; | |
110 | listnode_add_sort (up->sources, child); | |
111 | } | |
cfa91a87 DS |
112 | } |
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 | */ | |
120 | static struct pim_upstream * | |
03417ccd | 121 | pim_upstream_find_parent (struct pim_upstream *child) |
4d99418b | 122 | { |
03417ccd DS |
123 | struct prefix_sg any = child->sg; |
124 | struct pim_upstream *up = NULL; | |
4d99418b DS |
125 | |
126 | // (S,G) | |
03417ccd DS |
127 | if ((child->sg.src.s_addr != INADDR_ANY) && |
128 | (child->sg.grp.s_addr != INADDR_ANY)) | |
4d99418b | 129 | { |
4ed0af70 | 130 | any.src.s_addr = INADDR_ANY; |
03417ccd DS |
131 | up = pim_upstream_find (&any); |
132 | ||
133 | if (up) | |
134 | listnode_add (up->sources, child); | |
135 | ||
136 | return up; | |
4d99418b DS |
137 | } |
138 | ||
03417ccd | 139 | return NULL; |
4d99418b DS |
140 | } |
141 | ||
12e41d03 DL |
142 | void pim_upstream_free(struct pim_upstream *up) |
143 | { | |
144 | XFREE(MTYPE_PIM_UPSTREAM, up); | |
145 | } | |
146 | ||
147 | static void upstream_channel_oil_detach(struct pim_upstream *up) | |
148 | { | |
149 | if (up->channel_oil) { | |
150 | pim_channel_oil_del(up->channel_oil); | |
25a335e0 | 151 | up->channel_oil = NULL; |
12e41d03 DL |
152 | } |
153 | } | |
154 | ||
e5905a3b DS |
155 | void |
156 | pim_upstream_del(struct pim_upstream *up, const char *name) | |
12e41d03 | 157 | { |
7667c556 | 158 | bool notify_msdp = false; |
159 | ||
e5905a3b DS |
160 | if (PIM_DEBUG_PIM_TRACE) |
161 | { | |
162 | zlog_debug ("%s: Delete (%s) ref count: %d", | |
8bfb8b67 | 163 | name, up->sg_str, up->ref_count); |
e5905a3b DS |
164 | } |
165 | --up->ref_count; | |
166 | ||
167 | if (up->ref_count >= 1) | |
168 | return; | |
169 | ||
594a78cc DS |
170 | if (PIM_DEBUG_PIM_TRACE) |
171 | zlog_debug ("%s: %s is being deleted", | |
8bfb8b67 DS |
172 | __PRETTY_FUNCTION__, up->sg_str); |
173 | ||
12e41d03 | 174 | THREAD_OFF(up->t_join_timer); |
f14248dd | 175 | THREAD_OFF(up->t_ka_timer); |
792f4d29 | 176 | THREAD_OFF(up->t_rs_timer); |
1bf16443 | 177 | THREAD_OFF(up->t_msdp_reg_timer); |
12e41d03 | 178 | |
7667c556 | 179 | if (up->join_state == PIM_UPSTREAM_JOINED) { |
180 | pim_joinprune_send (up->rpf.source_nexthop.interface, | |
181 | up->rpf.rpf_addr.u.prefix4, | |
182 | up, 0); | |
183 | if (up->sg.src.s_addr == INADDR_ANY) { | |
184 | /* if a (*, G) entry in the joined state is being deleted we | |
185 | * need to notify MSDP */ | |
186 | notify_msdp = true; | |
187 | } | |
188 | } | |
189 | ||
36e466fe | 190 | if (up->sg.src.s_addr != INADDR_ANY) { |
9c5e4d62 | 191 | wheel_remove_item (pim_upstream_sg_wheel, up); |
36e466fe | 192 | notify_msdp = true; |
193 | } | |
9c5e4d62 | 194 | |
cfa91a87 | 195 | pim_upstream_remove_children (up); |
7fe1f662 | 196 | pim_mroute_del (up->channel_oil); |
12e41d03 DL |
197 | upstream_channel_oil_detach(up); |
198 | ||
03417ccd DS |
199 | if (up->sources) |
200 | list_delete (up->sources); | |
201 | up->sources = NULL; | |
202 | ||
12e41d03 DL |
203 | /* |
204 | notice that listnode_delete() can't be moved | |
205 | into pim_upstream_free() because the later is | |
206 | called by list_delete_all_node() | |
207 | */ | |
03417ccd DS |
208 | if (up->parent) |
209 | { | |
210 | listnode_delete (up->parent->sources, up); | |
211 | up->parent = NULL; | |
212 | } | |
0f588989 DS |
213 | listnode_delete (pim_upstream_list, up); |
214 | hash_release (pim_upstream_hash, up); | |
12e41d03 | 215 | |
7667c556 | 216 | if (notify_msdp) { |
36e466fe | 217 | pim_msdp_up_del(&up->sg); |
7667c556 | 218 | } |
12e41d03 DL |
219 | pim_upstream_free(up); |
220 | } | |
221 | ||
56638739 DS |
222 | void |
223 | pim_upstream_send_join (struct pim_upstream *up) | |
12e41d03 | 224 | { |
12e41d03 | 225 | if (PIM_DEBUG_PIM_TRACE) { |
eaa54bdb | 226 | char rpf_str[PREFIX_STRLEN]; |
63c59d0c | 227 | pim_addr_dump("<rpf?>", &up->rpf.rpf_addr, rpf_str, sizeof(rpf_str)); |
05e451f8 | 228 | zlog_debug ("%s: RPF'%s=%s(%s) for Interface %s", __PRETTY_FUNCTION__, |
8bfb8b67 | 229 | up->sg_str, rpf_str, pim_upstream_state2str (up->join_state), |
56638739 | 230 | up->rpf.source_nexthop.interface->name); |
63c59d0c | 231 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) { |
05e451f8 | 232 | zlog_debug("%s: can't send join upstream: RPF'%s=%s", |
56638739 | 233 | __PRETTY_FUNCTION__, |
8bfb8b67 | 234 | up->sg_str, rpf_str); |
12e41d03 DL |
235 | /* warning only */ |
236 | } | |
237 | } | |
56638739 | 238 | |
12e41d03 DL |
239 | /* send Join(S,G) to the current upstream neighbor */ |
240 | pim_joinprune_send(up->rpf.source_nexthop.interface, | |
63c59d0c | 241 | up->rpf.rpf_addr.u.prefix4, |
372eab92 | 242 | up, |
12e41d03 DL |
243 | 1 /* join */); |
244 | } | |
245 | ||
246 | static int on_join_timer(struct thread *t) | |
247 | { | |
248 | struct pim_upstream *up; | |
249 | ||
12e41d03 | 250 | up = THREAD_ARG(t); |
12e41d03 | 251 | |
bb6e291f DS |
252 | up->t_join_timer = NULL; |
253 | ||
254 | /* | |
255 | * In the case of a HFR we will not ahve anyone to send this to. | |
256 | */ | |
0bf27c5c | 257 | if (PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) |
bb6e291f DS |
258 | return 0; |
259 | ||
eb345962 DS |
260 | /* |
261 | * Don't send the join if the outgoing interface is a loopback | |
262 | * But since this might change leave the join timer running | |
263 | */ | |
264 | if (!if_is_loopback (up->rpf.source_nexthop.interface)) | |
265 | pim_upstream_send_join (up); | |
12e41d03 | 266 | |
12e41d03 DL |
267 | join_timer_start(up); |
268 | ||
269 | return 0; | |
270 | } | |
271 | ||
272 | static void join_timer_start(struct pim_upstream *up) | |
273 | { | |
274 | if (PIM_DEBUG_PIM_EVENTS) { | |
05e451f8 | 275 | zlog_debug("%s: starting %d sec timer for upstream (S,G)=%s", |
12e41d03 DL |
276 | __PRETTY_FUNCTION__, |
277 | qpim_t_periodic, | |
8bfb8b67 | 278 | up->sg_str); |
12e41d03 DL |
279 | } |
280 | ||
8e38a2cf | 281 | THREAD_OFF (up->t_join_timer); |
12e41d03 DL |
282 | THREAD_TIMER_ON(master, up->t_join_timer, |
283 | on_join_timer, | |
284 | up, qpim_t_periodic); | |
285 | } | |
286 | ||
287 | void pim_upstream_join_timer_restart(struct pim_upstream *up) | |
288 | { | |
289 | THREAD_OFF(up->t_join_timer); | |
290 | join_timer_start(up); | |
291 | } | |
292 | ||
293 | static void pim_upstream_join_timer_restart_msec(struct pim_upstream *up, | |
294 | int interval_msec) | |
295 | { | |
296 | if (PIM_DEBUG_PIM_EVENTS) { | |
05e451f8 | 297 | zlog_debug("%s: restarting %d msec timer for upstream (S,G)=%s", |
12e41d03 DL |
298 | __PRETTY_FUNCTION__, |
299 | interval_msec, | |
8bfb8b67 | 300 | up->sg_str); |
12e41d03 DL |
301 | } |
302 | ||
303 | THREAD_OFF(up->t_join_timer); | |
304 | THREAD_TIMER_MSEC_ON(master, up->t_join_timer, | |
305 | on_join_timer, | |
306 | up, interval_msec); | |
307 | } | |
308 | ||
309 | void pim_upstream_join_suppress(struct pim_upstream *up, | |
310 | struct in_addr rpf_addr, | |
311 | int holdtime) | |
312 | { | |
313 | long t_joinsuppress_msec; | |
314 | long join_timer_remain_msec; | |
315 | ||
316 | t_joinsuppress_msec = MIN(pim_if_t_suppressed_msec(up->rpf.source_nexthop.interface), | |
317 | 1000 * holdtime); | |
318 | ||
319 | join_timer_remain_msec = pim_time_timer_remain_msec(up->t_join_timer); | |
320 | ||
321 | if (PIM_DEBUG_PIM_TRACE) { | |
eaa54bdb | 322 | char rpf_str[INET_ADDRSTRLEN]; |
12e41d03 | 323 | pim_inet4_dump("<rpf?>", rpf_addr, rpf_str, sizeof(rpf_str)); |
05e451f8 | 324 | zlog_debug("%s %s: detected Join%s to RPF'(S,G)=%s: join_timer=%ld msec t_joinsuppress=%ld msec", |
12e41d03 | 325 | __FILE__, __PRETTY_FUNCTION__, |
8bfb8b67 | 326 | up->sg_str, |
12e41d03 DL |
327 | rpf_str, |
328 | join_timer_remain_msec, t_joinsuppress_msec); | |
329 | } | |
330 | ||
331 | if (join_timer_remain_msec < t_joinsuppress_msec) { | |
332 | if (PIM_DEBUG_PIM_TRACE) { | |
05e451f8 | 333 | zlog_debug("%s %s: suppressing Join(S,G)=%s for %ld msec", |
12e41d03 | 334 | __FILE__, __PRETTY_FUNCTION__, |
8bfb8b67 | 335 | up->sg_str, t_joinsuppress_msec); |
12e41d03 DL |
336 | } |
337 | ||
338 | pim_upstream_join_timer_restart_msec(up, t_joinsuppress_msec); | |
339 | } | |
340 | } | |
341 | ||
342 | void pim_upstream_join_timer_decrease_to_t_override(const char *debug_label, | |
343 | struct pim_upstream *up, | |
344 | struct in_addr rpf_addr) | |
345 | { | |
346 | long join_timer_remain_msec; | |
347 | int t_override_msec; | |
348 | ||
349 | join_timer_remain_msec = pim_time_timer_remain_msec(up->t_join_timer); | |
350 | t_override_msec = pim_if_t_override_msec(up->rpf.source_nexthop.interface); | |
351 | ||
352 | if (PIM_DEBUG_PIM_TRACE) { | |
eaa54bdb | 353 | char rpf_str[INET_ADDRSTRLEN]; |
12e41d03 | 354 | pim_inet4_dump("<rpf?>", rpf_addr, rpf_str, sizeof(rpf_str)); |
05e451f8 | 355 | zlog_debug("%s: to RPF'%s=%s: join_timer=%ld msec t_override=%d msec", |
12e41d03 | 356 | debug_label, |
8bfb8b67 | 357 | up->sg_str, rpf_str, |
12e41d03 DL |
358 | join_timer_remain_msec, t_override_msec); |
359 | } | |
360 | ||
361 | if (join_timer_remain_msec > t_override_msec) { | |
362 | if (PIM_DEBUG_PIM_TRACE) { | |
05e451f8 | 363 | zlog_debug("%s: decreasing (S,G)=%s join timer to t_override=%d msec", |
12e41d03 | 364 | debug_label, |
8bfb8b67 | 365 | up->sg_str, |
12e41d03 DL |
366 | t_override_msec); |
367 | } | |
368 | ||
369 | pim_upstream_join_timer_restart_msec(up, t_override_msec); | |
370 | } | |
371 | } | |
372 | ||
373 | static void forward_on(struct pim_upstream *up) | |
374 | { | |
12e41d03 DL |
375 | struct listnode *chnode; |
376 | struct listnode *chnextnode; | |
12e41d03 DL |
377 | struct pim_interface *pim_ifp; |
378 | struct pim_ifchannel *ch; | |
379 | ||
ea4a71fc DS |
380 | /* scan (S,G) state */ |
381 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
382 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
383 | if (!pim_ifp) |
384 | continue; | |
385 | ||
ea4a71fc DS |
386 | if (ch->upstream != up) |
387 | continue; | |
12e41d03 | 388 | |
ea4a71fc DS |
389 | if (pim_macro_chisin_oiflist(ch)) |
390 | pim_forward_start(ch); | |
12e41d03 | 391 | |
ea4a71fc | 392 | } /* scan iface channel list */ |
12e41d03 DL |
393 | } |
394 | ||
395 | static void forward_off(struct pim_upstream *up) | |
396 | { | |
12e41d03 DL |
397 | struct listnode *chnode; |
398 | struct listnode *chnextnode; | |
12e41d03 DL |
399 | struct pim_interface *pim_ifp; |
400 | struct pim_ifchannel *ch; | |
401 | ||
ea4a71fc DS |
402 | /* scan per-interface (S,G) state */ |
403 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
404 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
405 | if (!pim_ifp) |
406 | continue; | |
407 | ||
ea4a71fc DS |
408 | if (ch->upstream != up) |
409 | continue; | |
12e41d03 | 410 | |
ea4a71fc | 411 | pim_forward_stop(ch); |
12e41d03 | 412 | |
ea4a71fc | 413 | } /* scan iface channel list */ |
12e41d03 DL |
414 | } |
415 | ||
bb6e291f DS |
416 | static int |
417 | pim_upstream_could_register (struct pim_upstream *up) | |
418 | { | |
419 | struct pim_interface *pim_ifp = up->rpf.source_nexthop.interface->info; | |
420 | ||
35917570 | 421 | if (pim_ifp && PIM_I_am_DR (pim_ifp) && |
bb6e291f DS |
422 | pim_if_connected_to_source (up->rpf.source_nexthop.interface, up->sg.src)) |
423 | return 1; | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
7fcdfb34 DS |
428 | void |
429 | pim_upstream_switch(struct pim_upstream *up, | |
430 | enum pim_upstream_state new_state) | |
12e41d03 DL |
431 | { |
432 | enum pim_upstream_state old_state = up->join_state; | |
433 | ||
12e41d03 | 434 | if (PIM_DEBUG_PIM_EVENTS) { |
c9802954 | 435 | zlog_debug("%s: PIM_UPSTREAM_%s: (S,G) old: %s new: %s", |
12e41d03 | 436 | __PRETTY_FUNCTION__, |
8bfb8b67 | 437 | up->sg_str, |
c9802954 DS |
438 | pim_upstream_state2str (up->join_state), |
439 | pim_upstream_state2str (new_state)); | |
12e41d03 DL |
440 | } |
441 | ||
bb027ee8 DS |
442 | /* |
443 | * This code still needs work. | |
444 | */ | |
445 | switch (up->join_state) | |
446 | { | |
447 | case PIM_UPSTREAM_PRUNE: | |
0bf27c5c | 448 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) |
7747bad6 DS |
449 | { |
450 | up->join_state = new_state; | |
451 | up->state_transition = pim_time_monotonic_sec (); | |
452 | } | |
453 | break; | |
bb027ee8 DS |
454 | case PIM_UPSTREAM_JOIN_PENDING: |
455 | break; | |
456 | case PIM_UPSTREAM_NOTJOINED: | |
457 | case PIM_UPSTREAM_JOINED: | |
458 | up->join_state = new_state; | |
e5b6b229 DS |
459 | if (old_state != new_state) |
460 | up->state_transition = pim_time_monotonic_sec(); | |
bb027ee8 DS |
461 | |
462 | break; | |
463 | } | |
464 | ||
12e41d03 DL |
465 | pim_upstream_update_assert_tracking_desired(up); |
466 | ||
467 | if (new_state == PIM_UPSTREAM_JOINED) { | |
81900c5a DS |
468 | if (old_state != PIM_UPSTREAM_JOINED) |
469 | { | |
0bf27c5c | 470 | int old_fhr = PIM_UPSTREAM_FLAG_TEST_FHR(up->flags); |
81900c5a | 471 | forward_on(up); |
7667c556 | 472 | pim_msdp_up_join_state_changed(up); |
0bf27c5c | 473 | if (pim_upstream_could_register (up)) |
bb6e291f | 474 | { |
0bf27c5c | 475 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); |
a9b59879 | 476 | if (!old_fhr && PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) |
bb6e291f DS |
477 | { |
478 | pim_upstream_keep_alive_timer_start (up, qpim_keep_alive_time); | |
479 | pim_channel_add_oif (up->channel_oil, pim_regiface, PIM_OIF_FLAG_PROTO_PIM); | |
480 | } | |
481 | } | |
482 | else | |
483 | { | |
484 | pim_upstream_send_join (up); | |
485 | join_timer_start (up); | |
486 | } | |
81900c5a DS |
487 | } |
488 | else | |
489 | { | |
490 | forward_on (up); | |
491 | } | |
12e41d03 DL |
492 | } |
493 | else { | |
494 | forward_off(up); | |
7667c556 | 495 | if (old_state == PIM_UPSTREAM_JOINED) |
496 | pim_msdp_up_join_state_changed(up); | |
12e41d03 | 497 | pim_joinprune_send(up->rpf.source_nexthop.interface, |
63c59d0c | 498 | up->rpf.rpf_addr.u.prefix4, |
372eab92 | 499 | up, |
12e41d03 | 500 | 0 /* prune */); |
7fcdfb34 DS |
501 | if (up->t_join_timer) |
502 | THREAD_OFF(up->t_join_timer); | |
12e41d03 | 503 | } |
12e41d03 DL |
504 | } |
505 | ||
03417ccd DS |
506 | static int |
507 | pim_upstream_compare (void *arg1, void *arg2) | |
508 | { | |
509 | const struct pim_upstream *up1 = (const struct pim_upstream *)arg1; | |
510 | const struct pim_upstream *up2 = (const struct pim_upstream *)arg2; | |
511 | ||
512 | if (ntohl(up1->sg.grp.s_addr) < ntohl(up2->sg.grp.s_addr)) | |
513 | return -1; | |
514 | ||
515 | if (ntohl(up1->sg.grp.s_addr) > ntohl(up2->sg.grp.s_addr)) | |
516 | return 1; | |
517 | ||
518 | if (ntohl(up1->sg.src.s_addr) < ntohl(up2->sg.src.s_addr)) | |
519 | return -1; | |
520 | ||
521 | if (ntohl(up1->sg.src.s_addr) > ntohl(up2->sg.src.s_addr)) | |
522 | return 1; | |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
4ed0af70 | 527 | static struct pim_upstream *pim_upstream_new(struct prefix_sg *sg, |
4a40c37a DS |
528 | struct interface *incoming, |
529 | int flags) | |
12e41d03 DL |
530 | { |
531 | struct pim_upstream *up; | |
2f702571 | 532 | enum pim_rpf_result rpf_result; |
12e41d03 | 533 | |
36d9e7dc | 534 | up = XCALLOC(MTYPE_PIM_UPSTREAM, sizeof(*up)); |
12e41d03 | 535 | if (!up) { |
36d9e7dc | 536 | zlog_err("%s: PIM XCALLOC(%zu) failure", |
12e41d03 | 537 | __PRETTY_FUNCTION__, sizeof(*up)); |
8f5f5e91 | 538 | return NULL; |
12e41d03 DL |
539 | } |
540 | ||
5074a423 | 541 | up->sg = *sg; |
8bfb8b67 | 542 | pim_str_sg_set (sg, up->sg_str); |
0f588989 | 543 | up = hash_get (pim_upstream_hash, up, hash_alloc_intern); |
36d6bd7d | 544 | if (!pim_rp_set_upstream_addr (&up->upstream_addr, sg->src, sg->grp)) |
8f5f5e91 DS |
545 | { |
546 | if (PIM_DEBUG_PIM_TRACE) | |
547 | zlog_debug("%s: Received a (*,G) with no RP configured", __PRETTY_FUNCTION__); | |
548 | ||
03417ccd | 549 | hash_release (pim_upstream_hash, up); |
8f5f5e91 DS |
550 | XFREE (MTYPE_PIM_UPSTREAM, up); |
551 | return NULL; | |
552 | } | |
553 | ||
03417ccd DS |
554 | up->parent = pim_upstream_find_parent (up); |
555 | if (up->sg.src.s_addr == INADDR_ANY) | |
556 | { | |
557 | up->sources = list_new (); | |
558 | up->sources->cmp = pim_upstream_compare; | |
559 | } | |
560 | else | |
561 | up->sources = NULL; | |
562 | ||
cfa91a87 | 563 | pim_upstream_find_new_children (up); |
4a40c37a | 564 | up->flags = flags; |
12e41d03 | 565 | up->ref_count = 1; |
4a4c4a07 DS |
566 | up->t_join_timer = NULL; |
567 | up->t_ka_timer = NULL; | |
792f4d29 | 568 | up->t_rs_timer = NULL; |
1bf16443 | 569 | up->t_msdp_reg_timer = NULL; |
12e41d03 DL |
570 | up->join_state = 0; |
571 | up->state_transition = pim_time_monotonic_sec(); | |
4a4c4a07 | 572 | up->channel_oil = NULL; |
f9e0ab5b | 573 | up->sptbit = PIM_UPSTREAM_SPTBIT_FALSE; |
12e41d03 | 574 | |
f24405b1 | 575 | up->rpf.source_nexthop.interface = NULL; |
63c59d0c DS |
576 | up->rpf.source_nexthop.mrib_nexthop_addr.family = AF_INET; |
577 | up->rpf.source_nexthop.mrib_nexthop_addr.u.prefix4.s_addr = PIM_NET_INADDR_ANY; | |
12e41d03 DL |
578 | up->rpf.source_nexthop.mrib_metric_preference = qpim_infinite_assert_metric.metric_preference; |
579 | up->rpf.source_nexthop.mrib_route_metric = qpim_infinite_assert_metric.route_metric; | |
63c59d0c DS |
580 | up->rpf.rpf_addr.family = AF_INET; |
581 | up->rpf.rpf_addr.u.prefix4.s_addr = PIM_NET_INADDR_ANY; | |
12e41d03 | 582 | |
9c5e4d62 DS |
583 | if (up->sg.src.s_addr != INADDR_ANY) |
584 | wheel_add_item (pim_upstream_sg_wheel, up); | |
585 | ||
d3dd1804 | 586 | rpf_result = pim_rpf_update(up, NULL); |
2f702571 | 587 | if (rpf_result == PIM_RPF_FAILURE) { |
4a40c37a DS |
588 | if (PIM_DEBUG_PIM_TRACE) |
589 | zlog_debug ("%s: Attempting to create upstream(%s), Unable to RPF for source", __PRETTY_FUNCTION__, | |
8bfb8b67 | 590 | up->sg_str); |
03417ccd DS |
591 | |
592 | if (up->parent) | |
593 | { | |
594 | listnode_delete (up->parent->sources, up); | |
595 | up->parent = NULL; | |
596 | } | |
9c5e4d62 DS |
597 | |
598 | if (up->sg.src.s_addr != INADDR_ANY) | |
599 | wheel_remove_item (pim_upstream_sg_wheel, up); | |
600 | ||
03417ccd DS |
601 | pim_upstream_remove_children (up); |
602 | if (up->sources) | |
603 | list_delete (up->sources); | |
604 | ||
605 | hash_release (pim_upstream_hash, up); | |
2f702571 DS |
606 | XFREE(MTYPE_PIM_UPSTREAM, up); |
607 | return NULL; | |
608 | } | |
12e41d03 | 609 | |
0f588989 | 610 | listnode_add_sort(pim_upstream_list, up); |
12e41d03 | 611 | |
03417ccd | 612 | if (PIM_DEBUG_PIM_TRACE) |
8bfb8b67 | 613 | zlog_debug ("%s: Created Upstream %s", __PRETTY_FUNCTION__, up->sg_str); |
03417ccd | 614 | |
12e41d03 DL |
615 | return up; |
616 | } | |
617 | ||
4ed0af70 | 618 | struct pim_upstream *pim_upstream_find(struct prefix_sg *sg) |
12e41d03 | 619 | { |
0f588989 DS |
620 | struct pim_upstream lookup; |
621 | struct pim_upstream *up = NULL; | |
12e41d03 | 622 | |
0f588989 DS |
623 | lookup.sg = *sg; |
624 | up = hash_lookup (pim_upstream_hash, &lookup); | |
625 | return up; | |
12e41d03 DL |
626 | } |
627 | ||
1bf16443 | 628 | static void pim_upstream_ref(struct pim_upstream *up, int flags) |
629 | { | |
630 | up->flags |= flags; | |
631 | ++up->ref_count; | |
632 | } | |
633 | ||
4ed0af70 | 634 | struct pim_upstream *pim_upstream_add(struct prefix_sg *sg, |
4a40c37a | 635 | struct interface *incoming, |
e5905a3b | 636 | int flags, const char *name) |
12e41d03 | 637 | { |
594a78cc | 638 | struct pim_upstream *up = NULL; |
e5905a3b | 639 | int found = 0; |
5074a423 | 640 | up = pim_upstream_find(sg); |
12e41d03 | 641 | if (up) { |
1bf16443 | 642 | pim_upstream_ref(up, flags); |
e5905a3b | 643 | found = 1; |
12e41d03 DL |
644 | } |
645 | else { | |
4a40c37a | 646 | up = pim_upstream_new(sg, incoming, flags); |
12e41d03 DL |
647 | } |
648 | ||
e5905a3b | 649 | if (PIM_DEBUG_TRACE) |
f4075cb4 DS |
650 | { |
651 | if (up) | |
652 | zlog_debug("%s(%s): (%s), found: %d: ref_count: %d", | |
653 | __PRETTY_FUNCTION__, name, | |
8bfb8b67 | 654 | up->sg_str, found, |
f4075cb4 DS |
655 | up->ref_count); |
656 | else | |
657 | zlog_debug("%s(%s): (%s) failure to create", | |
658 | __PRETTY_FUNCTION__, name, | |
659 | pim_str_sg_dump (sg)); | |
660 | } | |
12e41d03 | 661 | |
e5905a3b | 662 | return up; |
12e41d03 DL |
663 | } |
664 | ||
7a3ddda5 DS |
665 | static int |
666 | pim_upstream_evaluate_join_desired_interface (struct pim_upstream *up, | |
667 | struct pim_ifchannel *ch) | |
668 | { | |
669 | struct pim_upstream *parent = up->parent; | |
670 | ||
671 | if (ch->upstream == up) | |
672 | { | |
673 | if (!pim_macro_ch_lost_assert(ch) && pim_macro_chisin_joins_or_include(ch)) | |
674 | return 1; | |
46c8aab8 DS |
675 | |
676 | if (PIM_IF_FLAG_TEST_S_G_RPT(ch->flags)) | |
677 | return 0; | |
7a3ddda5 | 678 | } |
46c8aab8 | 679 | |
7a3ddda5 DS |
680 | /* |
681 | * joins (*,G) | |
682 | */ | |
683 | if (parent && ch->upstream == parent) | |
684 | { | |
685 | if (!pim_macro_ch_lost_assert (ch) && pim_macro_chisin_joins_or_include (ch)) | |
686 | return 1; | |
687 | } | |
688 | ||
689 | return 0; | |
690 | } | |
691 | ||
12e41d03 DL |
692 | /* |
693 | Evaluate JoinDesired(S,G): | |
694 | ||
695 | JoinDesired(S,G) is true if there is a downstream (S,G) interface I | |
696 | in the set: | |
697 | ||
698 | inherited_olist(S,G) = | |
699 | joins(S,G) (+) pim_include(S,G) (-) lost_assert(S,G) | |
700 | ||
701 | JoinDesired(S,G) may be affected by changes in the following: | |
702 | ||
703 | pim_ifp->primary_address | |
704 | pim_ifp->pim_dr_addr | |
705 | ch->ifassert_winner_metric | |
706 | ch->ifassert_winner | |
707 | ch->local_ifmembership | |
708 | ch->ifjoin_state | |
709 | ch->upstream->rpf.source_nexthop.mrib_metric_preference | |
710 | ch->upstream->rpf.source_nexthop.mrib_route_metric | |
711 | ch->upstream->rpf.source_nexthop.interface | |
712 | ||
713 | See also pim_upstream_update_join_desired() below. | |
714 | */ | |
715 | int pim_upstream_evaluate_join_desired(struct pim_upstream *up) | |
716 | { | |
12e41d03 DL |
717 | struct listnode *chnode; |
718 | struct listnode *chnextnode; | |
12e41d03 DL |
719 | struct pim_interface *pim_ifp; |
720 | struct pim_ifchannel *ch; | |
7a3ddda5 | 721 | int ret = 0; |
12e41d03 | 722 | |
ea4a71fc DS |
723 | /* scan per-interface (S,G) state */ |
724 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) | |
725 | { | |
726 | pim_ifp = ch->interface->info; | |
727 | if (!pim_ifp) | |
728 | continue; | |
12e41d03 | 729 | |
ea4a71fc DS |
730 | ret += pim_upstream_evaluate_join_desired_interface (up, ch); |
731 | } /* scan iface channel list */ | |
12e41d03 | 732 | |
7a3ddda5 | 733 | return ret; /* false */ |
12e41d03 DL |
734 | } |
735 | ||
736 | /* | |
737 | See also pim_upstream_evaluate_join_desired() above. | |
738 | */ | |
739 | void pim_upstream_update_join_desired(struct pim_upstream *up) | |
740 | { | |
741 | int was_join_desired; /* boolean */ | |
742 | int is_join_desired; /* boolean */ | |
743 | ||
744 | was_join_desired = PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED(up->flags); | |
745 | ||
746 | is_join_desired = pim_upstream_evaluate_join_desired(up); | |
747 | if (is_join_desired) | |
748 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED(up->flags); | |
749 | else | |
750 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED(up->flags); | |
751 | ||
752 | /* switched from false to true */ | |
753 | if (is_join_desired && !was_join_desired) { | |
12e41d03 DL |
754 | pim_upstream_switch(up, PIM_UPSTREAM_JOINED); |
755 | return; | |
756 | } | |
757 | ||
758 | /* switched from true to false */ | |
759 | if (!is_join_desired && was_join_desired) { | |
12e41d03 DL |
760 | pim_upstream_switch(up, PIM_UPSTREAM_NOTJOINED); |
761 | return; | |
762 | } | |
763 | } | |
764 | ||
765 | /* | |
766 | RFC 4601 4.5.7. Sending (S,G) Join/Prune Messages | |
767 | Transitions from Joined State | |
768 | RPF'(S,G) GenID changes | |
769 | ||
770 | The upstream (S,G) state machine remains in Joined state. If the | |
771 | Join Timer is set to expire in more than t_override seconds, reset | |
772 | it so that it expires after t_override seconds. | |
773 | */ | |
774 | void pim_upstream_rpf_genid_changed(struct in_addr neigh_addr) | |
775 | { | |
776 | struct listnode *up_node; | |
777 | struct listnode *up_nextnode; | |
778 | struct pim_upstream *up; | |
779 | ||
780 | /* | |
0f588989 DS |
781 | * Scan all (S,G) upstreams searching for RPF'(S,G)=neigh_addr |
782 | */ | |
783 | for (ALL_LIST_ELEMENTS(pim_upstream_list, up_node, up_nextnode, up)) { | |
12e41d03 DL |
784 | |
785 | if (PIM_DEBUG_PIM_TRACE) { | |
eaa54bdb DW |
786 | char neigh_str[INET_ADDRSTRLEN]; |
787 | char rpf_addr_str[PREFIX_STRLEN]; | |
12e41d03 | 788 | pim_inet4_dump("<neigh?>", neigh_addr, neigh_str, sizeof(neigh_str)); |
63c59d0c | 789 | pim_addr_dump("<rpf?>", &up->rpf.rpf_addr, rpf_addr_str, sizeof(rpf_addr_str)); |
05e451f8 | 790 | zlog_debug("%s: matching neigh=%s against upstream (S,G)=%s joined=%d rpf_addr=%s", |
12e41d03 | 791 | __PRETTY_FUNCTION__, |
8bfb8b67 | 792 | neigh_str, up->sg_str, |
12e41d03 DL |
793 | up->join_state == PIM_UPSTREAM_JOINED, |
794 | rpf_addr_str); | |
795 | } | |
796 | ||
797 | /* consider only (S,G) upstream in Joined state */ | |
798 | if (up->join_state != PIM_UPSTREAM_JOINED) | |
799 | continue; | |
800 | ||
801 | /* match RPF'(S,G)=neigh_addr */ | |
63c59d0c | 802 | if (up->rpf.rpf_addr.u.prefix4.s_addr != neigh_addr.s_addr) |
12e41d03 DL |
803 | continue; |
804 | ||
805 | pim_upstream_join_timer_decrease_to_t_override("RPF'(S,G) GenID change", | |
806 | up, neigh_addr); | |
807 | } | |
808 | } | |
809 | ||
810 | ||
811 | void pim_upstream_rpf_interface_changed(struct pim_upstream *up, | |
812 | struct interface *old_rpf_ifp) | |
813 | { | |
ea4a71fc DS |
814 | struct listnode *chnode; |
815 | struct listnode *chnextnode; | |
816 | struct pim_ifchannel *ch; | |
817 | struct pim_interface *pim_ifp; | |
818 | ||
819 | /* search all ifchannels */ | |
820 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
821 | ||
822 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
823 | if (!pim_ifp) |
824 | continue; | |
825 | ||
ea4a71fc DS |
826 | if (ch->upstream != up) |
827 | continue; | |
12e41d03 | 828 | |
ea4a71fc DS |
829 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { |
830 | if ( | |
831 | /* RPF_interface(S) was NOT I */ | |
832 | (old_rpf_ifp == ch->interface) | |
833 | && | |
834 | /* RPF_interface(S) stopped being I */ | |
835 | (ch->upstream->rpf.source_nexthop.interface != ch->interface) | |
836 | ) { | |
837 | assert_action_a5(ch); | |
838 | } | |
839 | } /* PIM_IFASSERT_I_AM_LOSER */ | |
12e41d03 | 840 | |
ea4a71fc | 841 | pim_ifchannel_update_assert_tracking_desired(ch); |
12e41d03 DL |
842 | } |
843 | } | |
844 | ||
845 | void pim_upstream_update_could_assert(struct pim_upstream *up) | |
846 | { | |
12e41d03 DL |
847 | struct listnode *chnode; |
848 | struct listnode *chnextnode; | |
12e41d03 DL |
849 | struct pim_interface *pim_ifp; |
850 | struct pim_ifchannel *ch; | |
851 | ||
ea4a71fc DS |
852 | /* scan per-interface (S,G) state */ |
853 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
854 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
855 | if (!pim_ifp) |
856 | continue; | |
857 | ||
ea4a71fc DS |
858 | if (ch->upstream != up) |
859 | continue; | |
12e41d03 | 860 | |
ea4a71fc DS |
861 | pim_ifchannel_update_could_assert(ch); |
862 | } /* scan iface channel list */ | |
12e41d03 DL |
863 | } |
864 | ||
865 | void pim_upstream_update_my_assert_metric(struct pim_upstream *up) | |
866 | { | |
12e41d03 DL |
867 | struct listnode *chnode; |
868 | struct listnode *chnextnode; | |
12e41d03 DL |
869 | struct pim_interface *pim_ifp; |
870 | struct pim_ifchannel *ch; | |
871 | ||
ea4a71fc DS |
872 | /* scan per-interface (S,G) state */ |
873 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
874 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
875 | if (!pim_ifp) |
876 | continue; | |
877 | ||
ea4a71fc DS |
878 | if (ch->upstream != up) |
879 | continue; | |
12e41d03 | 880 | |
ea4a71fc | 881 | pim_ifchannel_update_my_assert_metric(ch); |
12e41d03 | 882 | |
ea4a71fc | 883 | } /* scan iface channel list */ |
12e41d03 DL |
884 | } |
885 | ||
886 | static void pim_upstream_update_assert_tracking_desired(struct pim_upstream *up) | |
887 | { | |
12e41d03 DL |
888 | struct listnode *chnode; |
889 | struct listnode *chnextnode; | |
12e41d03 DL |
890 | struct pim_interface *pim_ifp; |
891 | struct pim_ifchannel *ch; | |
892 | ||
ea4a71fc DS |
893 | /* scan per-interface (S,G) state */ |
894 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
895 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
896 | if (!pim_ifp) |
897 | continue; | |
898 | ||
ea4a71fc DS |
899 | if (ch->upstream != up) |
900 | continue; | |
12e41d03 | 901 | |
ea4a71fc | 902 | pim_ifchannel_update_assert_tracking_desired(ch); |
12e41d03 | 903 | |
ea4a71fc | 904 | } /* scan iface channel list */ |
12e41d03 | 905 | } |
f14248dd | 906 | |
1bf16443 | 907 | /* When kat is stopped CouldRegister goes to false so we need to |
908 | * transition the (S, G) on FHR to NI state and remove reg tunnel | |
909 | * from the OIL */ | |
910 | static void pim_upstream_fhr_kat_expiry(struct pim_upstream *up) | |
911 | { | |
912 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) | |
913 | return; | |
914 | ||
915 | if (PIM_DEBUG_TRACE) | |
8bfb8b67 DS |
916 | zlog_debug ("kat expired on %s; clear fhr reg state", up->sg_str); |
917 | ||
1bf16443 | 918 | /* stop reg-stop timer */ |
919 | THREAD_OFF(up->t_rs_timer); | |
920 | /* remove regiface from the OIL if it is there*/ | |
921 | pim_channel_del_oif (up->channel_oil, pim_regiface, PIM_OIF_FLAG_PROTO_PIM); | |
922 | /* move to "not-joined" */ | |
923 | up->join_state = PIM_UPSTREAM_NOTJOINED; | |
924 | PIM_UPSTREAM_FLAG_UNSET_FHR(up->flags); | |
925 | } | |
926 | ||
927 | /* When kat is started CouldRegister can go to true. And if it does we | |
928 | * need to transition the (S, G) on FHR to JOINED state and add reg tunnel | |
929 | * to the OIL */ | |
930 | static void pim_upstream_fhr_kat_start(struct pim_upstream *up) | |
931 | { | |
932 | if (pim_upstream_could_register(up)) { | |
933 | if (PIM_DEBUG_TRACE) | |
8bfb8b67 DS |
934 | zlog_debug ("kat started on %s; set fhr reg state to joined", up->sg_str); |
935 | ||
1bf16443 | 936 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); |
937 | if (up->join_state == PIM_UPSTREAM_NOTJOINED) { | |
938 | pim_channel_add_oif (up->channel_oil, pim_regiface, PIM_OIF_FLAG_PROTO_PIM); | |
939 | up->join_state = PIM_UPSTREAM_JOINED; | |
940 | } | |
941 | } | |
942 | } | |
943 | ||
f14248dd DS |
944 | /* |
945 | * On an RP, the PMBR value must be cleared when the | |
946 | * Keepalive Timer expires | |
1bf16443 | 947 | * KAT expiry indicates that flow is inactive. If the flow was created or |
948 | * maintained by activity now is the time to deref it. | |
f14248dd DS |
949 | */ |
950 | static int | |
951 | pim_upstream_keep_alive_timer (struct thread *t) | |
952 | { | |
953 | struct pim_upstream *up; | |
954 | ||
955 | up = THREAD_ARG(t); | |
1bf16443 | 956 | up->t_ka_timer = NULL; |
f14248dd | 957 | |
4ed0af70 | 958 | if (I_am_RP (up->sg.grp)) |
1bf16443 | 959 | { |
960 | pim_br_clear_pmbr (&up->sg); | |
961 | /* | |
962 | * We need to do more here :) | |
963 | * But this is the start. | |
964 | */ | |
965 | } | |
14315ea8 | 966 | |
1bf16443 | 967 | /* source is no longer active - pull the SA from MSDP's cache */ |
968 | pim_msdp_sa_local_del(&up->sg); | |
14315ea8 | 969 | |
1bf16443 | 970 | /* if entry was created because of activity we need to deref it */ |
971 | if (PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) | |
972 | { | |
973 | pim_upstream_fhr_kat_expiry(up); | |
974 | if (PIM_DEBUG_TRACE) | |
8bfb8b67 | 975 | zlog_debug ("kat expired on %s; remove stream reference", up->sg_str); |
1bf16443 | 976 | PIM_UPSTREAM_FLAG_UNSET_SRC_STREAM(up->flags); |
977 | pim_upstream_del(up, __PRETTY_FUNCTION__); | |
978 | } | |
14315ea8 | 979 | |
1bf16443 | 980 | return 0; |
f14248dd DS |
981 | } |
982 | ||
f14248dd DS |
983 | void |
984 | pim_upstream_keep_alive_timer_start (struct pim_upstream *up, | |
985 | uint32_t time) | |
986 | { | |
1bf16443 | 987 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) { |
988 | if (PIM_DEBUG_TRACE) | |
8bfb8b67 | 989 | zlog_debug ("kat start on %s with no stream reference", up->sg_str); |
1bf16443 | 990 | } |
00d2f9e4 | 991 | THREAD_OFF (up->t_ka_timer); |
f14248dd DS |
992 | THREAD_TIMER_ON (master, |
993 | up->t_ka_timer, | |
994 | pim_upstream_keep_alive_timer, | |
995 | up, time); | |
1bf16443 | 996 | |
997 | /* any time keepalive is started against a SG we will have to | |
998 | * re-evaluate our active source database */ | |
999 | pim_msdp_sa_local_update(up); | |
1000 | } | |
1001 | ||
1002 | /* MSDP on RP needs to know if a source is registerable to this RP */ | |
1003 | static int | |
1004 | pim_upstream_msdp_reg_timer(struct thread *t) | |
1005 | { | |
1006 | struct pim_upstream *up; | |
1007 | ||
1008 | up = THREAD_ARG(t); | |
1009 | up->t_msdp_reg_timer = NULL; | |
1010 | ||
1011 | /* source is no longer active - pull the SA from MSDP's cache */ | |
1012 | pim_msdp_sa_local_del(&up->sg); | |
1013 | return 1; | |
1014 | } | |
1015 | void | |
1016 | pim_upstream_msdp_reg_timer_start(struct pim_upstream *up) | |
1017 | { | |
1018 | THREAD_OFF(up->t_msdp_reg_timer); | |
1019 | THREAD_TIMER_ON(master, up->t_msdp_reg_timer, | |
1020 | pim_upstream_msdp_reg_timer, up, PIM_MSDP_REG_RXED_PERIOD); | |
1021 | ||
1022 | pim_msdp_sa_local_update(up); | |
f14248dd | 1023 | } |
cb40b272 DS |
1024 | |
1025 | /* | |
1026 | * 4.2.1 Last-Hop Switchover to the SPT | |
1027 | * | |
1028 | * In Sparse-Mode PIM, last-hop routers join the shared tree towards the | |
1029 | * RP. Once traffic from sources to joined groups arrives at a last-hop | |
1030 | * router, it has the option of switching to receive the traffic on a | |
1031 | * shortest path tree (SPT). | |
1032 | * | |
1033 | * The decision for a router to switch to the SPT is controlled as | |
1034 | * follows: | |
1035 | * | |
1036 | * void | |
1037 | * CheckSwitchToSpt(S,G) { | |
1038 | * if ( ( pim_include(*,G) (-) pim_exclude(S,G) | |
1039 | * (+) pim_include(S,G) != NULL ) | |
1040 | * AND SwitchToSptDesired(S,G) ) { | |
1041 | * # Note: Restarting the KAT will result in the SPT switch | |
1042 | * set KeepaliveTimer(S,G) to Keepalive_Period | |
1043 | * } | |
1044 | * } | |
1045 | * | |
1046 | * SwitchToSptDesired(S,G) is a policy function that is implementation | |
1047 | * defined. An "infinite threshold" policy can be implemented by making | |
1048 | * SwitchToSptDesired(S,G) return false all the time. A "switch on | |
1049 | * first packet" policy can be implemented by making | |
1050 | * SwitchToSptDesired(S,G) return true once a single packet has been | |
1051 | * received for the source and group. | |
1052 | */ | |
1053 | int | |
4ed0af70 | 1054 | pim_upstream_switch_to_spt_desired (struct prefix_sg *sg) |
cb40b272 | 1055 | { |
4ed0af70 | 1056 | if (I_am_RP (sg->grp)) |
a3b58b4a DS |
1057 | return 1; |
1058 | ||
cb40b272 DS |
1059 | return 0; |
1060 | } | |
d7259eac | 1061 | |
80d9c3a0 DS |
1062 | int |
1063 | pim_upstream_is_sg_rpt (struct pim_upstream *up) | |
1064 | { | |
f21597f0 DS |
1065 | struct listnode *chnode; |
1066 | struct pim_ifchannel *ch; | |
1067 | ||
1068 | for (ALL_LIST_ELEMENTS_RO(pim_ifchannel_list, chnode, ch)) | |
1069 | { | |
1070 | if ((ch->upstream == up) && | |
1071 | (PIM_IF_FLAG_TEST_S_G_RPT(ch->flags))) | |
1072 | return 1; | |
1073 | } | |
e43b8697 | 1074 | |
80d9c3a0 DS |
1075 | return 0; |
1076 | } | |
3a66b17b DS |
1077 | /* |
1078 | * After receiving a packet set SPTbit: | |
1079 | * void | |
1080 | * Update_SPTbit(S,G,iif) { | |
1081 | * if ( iif == RPF_interface(S) | |
1082 | * AND JoinDesired(S,G) == TRUE | |
1083 | * AND ( DirectlyConnected(S) == TRUE | |
1084 | * OR RPF_interface(S) != RPF_interface(RP(G)) | |
1085 | * OR inherited_olist(S,G,rpt) == NULL | |
1086 | * OR ( ( RPF'(S,G) == RPF'(*,G) ) AND | |
1087 | * ( RPF'(S,G) != NULL ) ) | |
1088 | * OR ( I_Am_Assert_Loser(S,G,iif) ) { | |
1089 | * Set SPTbit(S,G) to TRUE | |
1090 | * } | |
1091 | * } | |
1092 | */ | |
1093 | void | |
1094 | pim_upstream_set_sptbit (struct pim_upstream *up, struct interface *incoming) | |
1095 | { | |
1096 | struct pim_rpf *grpf = NULL; | |
1097 | ||
1098 | // iif == RPF_interfvace(S) | |
1099 | if (up->rpf.source_nexthop.interface != incoming) | |
1100 | { | |
1101 | if (PIM_DEBUG_TRACE) | |
1102 | zlog_debug ("%s: Incoming Interface: %s is different than RPF_interface(S) %s", | |
1103 | __PRETTY_FUNCTION__, incoming->name, up->rpf.source_nexthop.interface->name); | |
1104 | return; | |
1105 | } | |
1106 | ||
1107 | // AND JoinDesired(S,G) == TRUE | |
1108 | // FIXME | |
1109 | ||
1110 | // DirectlyConnected(S) == TRUE | |
1111 | if (pim_if_connected_to_source (up->rpf.source_nexthop.interface, up->sg.src)) | |
1112 | { | |
1113 | if (PIM_DEBUG_TRACE) | |
1114 | zlog_debug ("%s: %s is directly connected to the source", __PRETTY_FUNCTION__, | |
8bfb8b67 | 1115 | up->sg_str); |
3a66b17b DS |
1116 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
1117 | return; | |
1118 | } | |
1119 | ||
1120 | // OR RPF_interface(S) != RPF_interface(RP(G)) | |
1121 | grpf = RP(up->sg.grp); | |
1122 | if (!grpf || up->rpf.source_nexthop.interface != grpf->source_nexthop.interface) | |
1123 | { | |
1124 | if (PIM_DEBUG_TRACE) | |
1125 | zlog_debug ("%s: %s RPF_interface(S) != RPF_interface(RP(G))", | |
8bfb8b67 | 1126 | __PRETTY_FUNCTION__, up->sg_str); |
3a66b17b DS |
1127 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
1128 | return; | |
1129 | } | |
1130 | ||
1131 | // OR inherited_olist(S,G,rpt) == NULL | |
1132 | if (pim_upstream_is_sg_rpt(up) && pim_upstream_empty_inherited_olist(up)) | |
1133 | { | |
1134 | if (PIM_DEBUG_TRACE) | |
1135 | zlog_debug ("%s: %s OR inherited_olist(S,G,rpt) == NULL", __PRETTY_FUNCTION__, | |
8bfb8b67 | 1136 | up->sg_str); |
3a66b17b DS |
1137 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
1138 | return; | |
1139 | } | |
1140 | ||
1141 | // OR ( ( RPF'(S,G) == RPF'(*,G) ) AND | |
1142 | // ( RPF'(S,G) != NULL ) ) | |
1143 | if (up->parent && pim_rpf_is_same (&up->rpf, &up->parent->rpf)) | |
1144 | { | |
1145 | if (PIM_DEBUG_TRACE) | |
1146 | zlog_debug ("%s: %s RPF'(S,G) is the same as RPF'(*,G)", __PRETTY_FUNCTION__, | |
8bfb8b67 | 1147 | up->sg_str); |
3a66b17b DS |
1148 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
1149 | return; | |
1150 | } | |
1151 | ||
1152 | return; | |
1153 | } | |
80d9c3a0 | 1154 | |
d7259eac | 1155 | const char * |
c9802954 | 1156 | pim_upstream_state2str (enum pim_upstream_state join_state) |
d7259eac | 1157 | { |
c9802954 | 1158 | switch (join_state) |
d7259eac DS |
1159 | { |
1160 | case PIM_UPSTREAM_NOTJOINED: | |
e775c0a4 | 1161 | return "NotJoined"; |
d7259eac DS |
1162 | break; |
1163 | case PIM_UPSTREAM_JOINED: | |
e775c0a4 | 1164 | return "Joined"; |
d7259eac DS |
1165 | break; |
1166 | case PIM_UPSTREAM_JOIN_PENDING: | |
e775c0a4 | 1167 | return "JoinPending"; |
d7259eac DS |
1168 | break; |
1169 | case PIM_UPSTREAM_PRUNE: | |
1170 | return "Prune"; | |
1171 | break; | |
1172 | } | |
e775c0a4 | 1173 | return "Unknown"; |
d7259eac | 1174 | } |
627ed2a3 DS |
1175 | |
1176 | static int | |
1177 | pim_upstream_register_stop_timer (struct thread *t) | |
1178 | { | |
4df01a4e | 1179 | struct pim_interface *pim_ifp; |
627ed2a3 DS |
1180 | struct pim_upstream *up; |
1181 | struct pim_rpf *rpg; | |
1182 | struct ip ip_hdr; | |
627ed2a3 DS |
1183 | up = THREAD_ARG (t); |
1184 | ||
1185 | up->t_rs_timer = NULL; | |
1186 | ||
1187 | if (PIM_DEBUG_TRACE) | |
1188 | { | |
d5ed8a9c | 1189 | zlog_debug ("%s: (S,G)=%s upstream register stop timer %s", |
8bfb8b67 | 1190 | __PRETTY_FUNCTION__, up->sg_str, |
c9802954 | 1191 | pim_upstream_state2str(up->join_state)); |
627ed2a3 DS |
1192 | } |
1193 | ||
1194 | switch (up->join_state) | |
1195 | { | |
1196 | case PIM_UPSTREAM_JOIN_PENDING: | |
1197 | up->join_state = PIM_UPSTREAM_JOINED; | |
bb027ee8 DS |
1198 | pim_channel_add_oif (up->channel_oil, pim_regiface, PIM_OIF_FLAG_PROTO_PIM); |
1199 | break; | |
1200 | case PIM_UPSTREAM_JOINED: | |
627ed2a3 DS |
1201 | break; |
1202 | case PIM_UPSTREAM_PRUNE: | |
4df01a4e | 1203 | pim_ifp = up->rpf.source_nexthop.interface->info; |
7ef66046 DS |
1204 | if (!pim_ifp) |
1205 | { | |
1206 | if (PIM_DEBUG_TRACE) | |
1207 | zlog_debug ("%s: Interface: %s is not configured for pim", | |
1208 | __PRETTY_FUNCTION__, up->rpf.source_nexthop.interface->name); | |
1209 | return 0; | |
1210 | } | |
627ed2a3 DS |
1211 | up->join_state = PIM_UPSTREAM_JOIN_PENDING; |
1212 | pim_upstream_start_register_stop_timer (up, 1); | |
1213 | ||
4ed0af70 | 1214 | rpg = RP (up->sg.grp); |
627ed2a3 DS |
1215 | memset (&ip_hdr, 0, sizeof (struct ip)); |
1216 | ip_hdr.ip_p = PIM_IP_PROTO_PIM; | |
1217 | ip_hdr.ip_hl = 5; | |
1218 | ip_hdr.ip_v = 4; | |
4ed0af70 DS |
1219 | ip_hdr.ip_src = up->sg.src; |
1220 | ip_hdr.ip_dst = up->sg.grp; | |
dc686f82 | 1221 | ip_hdr.ip_len = htons (20); |
627ed2a3 | 1222 | // checksum is broken |
4df01a4e | 1223 | pim_register_send ((uint8_t *)&ip_hdr, sizeof (struct ip), |
0e3b3d5d | 1224 | pim_ifp->primary_address, rpg, 1, up); |
627ed2a3 DS |
1225 | break; |
1226 | default: | |
1227 | break; | |
1228 | } | |
1229 | ||
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | void | |
1234 | pim_upstream_start_register_stop_timer (struct pim_upstream *up, int null_register) | |
1235 | { | |
1236 | uint32_t time; | |
1237 | ||
1238 | if (up->t_rs_timer) | |
1239 | { | |
1240 | THREAD_TIMER_OFF (up->t_rs_timer); | |
1241 | up->t_rs_timer = NULL; | |
1242 | } | |
1243 | ||
1244 | if (!null_register) | |
1245 | { | |
1246 | uint32_t lower = (0.5 * PIM_REGISTER_SUPPRESSION_PERIOD); | |
1247 | uint32_t upper = (1.5 * PIM_REGISTER_SUPPRESSION_PERIOD); | |
1248 | time = lower + (random () % (upper - lower + 1)) - PIM_REGISTER_PROBE_PERIOD; | |
1249 | } | |
1250 | else | |
1251 | time = PIM_REGISTER_PROBE_PERIOD; | |
1252 | ||
1253 | if (PIM_DEBUG_TRACE) | |
1254 | { | |
05e451f8 | 1255 | zlog_debug ("%s: (S,G)=%s Starting upstream register stop timer %d", |
8bfb8b67 | 1256 | __PRETTY_FUNCTION__, up->sg_str, time); |
627ed2a3 DS |
1257 | } |
1258 | THREAD_TIMER_ON (master, up->t_rs_timer, | |
1259 | pim_upstream_register_stop_timer, | |
1260 | up, time); | |
1261 | } | |
4fdc8f36 DS |
1262 | |
1263 | /* | |
1264 | * For a given upstream, determine the inherited_olist | |
1265 | * and apply it. | |
219e0013 DS |
1266 | * |
1267 | * inherited_olist(S,G,rpt) = | |
1268 | * ( joins(*,*,RP(G)) (+) joins(*,G) (-) prunes(S,G,rpt) ) | |
1269 | * (+) ( pim_include(*,G) (-) pim_exclude(S,G)) | |
1270 | * (-) ( lost_assert(*,G) (+) lost_assert(S,G,rpt) ) | |
1271 | * | |
1272 | * inherited_olist(S,G) = | |
1273 | * inherited_olist(S,G,rpt) (+) | |
1274 | * joins(S,G) (+) pim_include(S,G) (-) lost_assert(S,G) | |
1275 | * | |
4fdc8f36 DS |
1276 | * return 1 if there are any output interfaces |
1277 | * return 0 if there are not any output interfaces | |
1278 | */ | |
1279 | int | |
1280 | pim_upstream_inherited_olist (struct pim_upstream *up) | |
1281 | { | |
219e0013 | 1282 | struct pim_interface *pim_ifp; |
219e0013 DS |
1283 | struct listnode *chnextnode; |
1284 | struct pim_ifchannel *ch; | |
1285 | struct listnode *chnode; | |
219e0013 DS |
1286 | int output_intf = 0; |
1287 | ||
3667b0bc | 1288 | pim_ifp = up->rpf.source_nexthop.interface->info; |
da55afba | 1289 | if (pim_ifp && !up->channel_oil) |
3667b0bc | 1290 | up->channel_oil = pim_channel_oil_add (&up->sg, pim_ifp->mroute_vif_index); |
219e0013 | 1291 | |
ea4a71fc | 1292 | for (ALL_LIST_ELEMENTS (pim_ifchannel_list, chnode, chnextnode, ch)) |
219e0013 | 1293 | { |
ea4a71fc | 1294 | pim_ifp = ch->interface->info; |
7a3ddda5 DS |
1295 | if (!pim_ifp) |
1296 | continue; | |
219e0013 | 1297 | |
ea4a71fc | 1298 | if (pim_upstream_evaluate_join_desired_interface (up, ch)) |
7a3ddda5 | 1299 | { |
ea4a71fc DS |
1300 | pim_channel_add_oif (up->channel_oil, ch->interface, PIM_OIF_FLAG_PROTO_PIM); |
1301 | output_intf++; | |
219e0013 DS |
1302 | } |
1303 | } | |
1304 | ||
483eef9d DS |
1305 | /* |
1306 | * If we have output_intf switch state to Join and work like normal | |
1307 | * If we don't have an output_intf that means we are probably a | |
1308 | * switch on a stick so turn on forwarding to just accept the | |
1309 | * incoming packets so we don't bother the other stuff! | |
1310 | */ | |
1311 | if (output_intf) | |
1312 | pim_upstream_switch (up, PIM_UPSTREAM_JOINED); | |
1313 | else | |
1314 | forward_on (up); | |
219e0013 DS |
1315 | |
1316 | return output_intf; | |
4fdc8f36 | 1317 | } |
d3dd1804 | 1318 | |
80d9c3a0 DS |
1319 | int |
1320 | pim_upstream_empty_inherited_olist (struct pim_upstream *up) | |
1321 | { | |
ce0ddb4e | 1322 | return pim_channel_oil_empty (up->channel_oil); |
80d9c3a0 DS |
1323 | } |
1324 | ||
d3dd1804 DS |
1325 | /* |
1326 | * When we have a new neighbor, | |
1327 | * find upstreams that don't have their rpf_addr | |
1328 | * set and see if the new neighbor allows | |
1329 | * the join to be sent | |
1330 | */ | |
1331 | void | |
1332 | pim_upstream_find_new_rpf (void) | |
1333 | { | |
1334 | struct listnode *up_node; | |
1335 | struct listnode *up_nextnode; | |
1336 | struct pim_upstream *up; | |
1337 | ||
1338 | /* | |
0f588989 DS |
1339 | * Scan all (S,G) upstreams searching for RPF'(S,G)=neigh_addr |
1340 | */ | |
1341 | for (ALL_LIST_ELEMENTS(pim_upstream_list, up_node, up_nextnode, up)) | |
d3dd1804 | 1342 | { |
63c59d0c | 1343 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) |
d3dd1804 DS |
1344 | { |
1345 | if (PIM_DEBUG_PIM_TRACE) | |
1346 | zlog_debug ("Upstream %s without a path to send join, checking", | |
8bfb8b67 | 1347 | up->sg_str); |
d3dd1804 DS |
1348 | pim_rpf_update (up, NULL); |
1349 | } | |
1350 | } | |
1351 | } | |
0f588989 | 1352 | |
0f588989 DS |
1353 | static unsigned int |
1354 | pim_upstream_hash_key (void *arg) | |
1355 | { | |
1356 | struct pim_upstream *up = (struct pim_upstream *)arg; | |
1357 | ||
1358 | return jhash_2words (up->sg.src.s_addr, up->sg.grp.s_addr, 0); | |
1359 | } | |
1360 | ||
1361 | void pim_upstream_terminate (void) | |
1362 | { | |
1363 | if (pim_upstream_list) | |
1364 | list_free (pim_upstream_list); | |
1365 | pim_upstream_list = NULL; | |
1366 | ||
1367 | if (pim_upstream_hash) | |
1368 | hash_free (pim_upstream_hash); | |
1369 | } | |
1370 | ||
1371 | static int | |
1372 | pim_upstream_equal (const void *arg1, const void *arg2) | |
1373 | { | |
1374 | const struct pim_upstream *up1 = (const struct pim_upstream *)arg1; | |
1375 | const struct pim_upstream *up2 = (const struct pim_upstream *)arg2; | |
1376 | ||
1377 | if ((up1->sg.grp.s_addr == up2->sg.grp.s_addr) && | |
1378 | (up1->sg.src.s_addr == up2->sg.src.s_addr)) | |
1379 | return 1; | |
1380 | ||
1381 | return 0; | |
1382 | } | |
1383 | ||
1bf16443 | 1384 | /* rfc4601:section-4.2:"Data Packet Forwarding Rules" defines |
1385 | * the cases where kat has to be restarted on rxing traffic - | |
1386 | * | |
1387 | * if( DirectlyConnected(S) == TRUE AND iif == RPF_interface(S) ) { | |
1388 | * set KeepaliveTimer(S,G) to Keepalive_Period | |
1389 | * # Note: a register state transition or UpstreamJPState(S,G) | |
1390 | * # transition may happen as a result of restarting | |
1391 | * # KeepaliveTimer, and must be dealt with here. | |
1392 | * } | |
1393 | * if( iif == RPF_interface(S) AND UpstreamJPState(S,G) == Joined AND | |
1394 | * inherited_olist(S,G) != NULL ) { | |
1395 | * set KeepaliveTimer(S,G) to Keepalive_Period | |
1396 | * } | |
1397 | */ | |
1398 | static bool pim_upstream_kat_start_ok(struct pim_upstream *up) | |
1399 | { | |
1400 | /* "iif == RPF_interface(S)" check has to be done by the kernel or hw | |
1401 | * so we will skip that here */ | |
1402 | if (pim_if_connected_to_source(up->rpf.source_nexthop.interface, | |
1403 | up->sg.src)) { | |
1404 | return true; | |
1405 | } | |
1406 | ||
1407 | if ((up->join_state == PIM_UPSTREAM_JOINED) && | |
1408 | !pim_upstream_empty_inherited_olist(up)) { | |
1409 | /* XXX: I have added this RP check just for 3.2 and it's a digression from | |
1410 | * what rfc-4601 says. Till now we were only running KAT on FHR and RP and | |
1411 | * there is some angst around making the change to run it all routers that | |
1412 | * maintain the (S, G) state. This is tracked via CM-13601 and MUST be | |
1413 | * removed to handle spt turn-arounds correctly in a 3-tier clos */ | |
1414 | if (I_am_RP (up->sg.grp)) | |
1415 | return true; | |
1416 | } | |
1417 | ||
1418 | return false; | |
1419 | } | |
1420 | ||
9c5e4d62 DS |
1421 | /* |
1422 | * Code to check and see if we've received packets on a S,G mroute | |
1423 | * and if so to set the SPT bit appropriately | |
1424 | */ | |
1425 | static void | |
1426 | pim_upstream_sg_running (void *arg) | |
1427 | { | |
1428 | struct pim_upstream *up = (struct pim_upstream *)arg; | |
e43b8697 DS |
1429 | |
1430 | // No packet can have arrived here if this is the case | |
1431 | if (!up->channel_oil || !up->channel_oil->installed) | |
1432 | { | |
1433 | if (PIM_DEBUG_TRACE) | |
1434 | zlog_debug ("%s: %s is not installed in mroute", | |
8bfb8b67 | 1435 | __PRETTY_FUNCTION__, up->sg_str); |
e43b8697 DS |
1436 | return; |
1437 | } | |
1438 | ||
e43b8697 DS |
1439 | |
1440 | pim_mroute_update_counters (up->channel_oil); | |
1441 | ||
1442 | // Have we seen packets? | |
1bf16443 | 1443 | if ((up->channel_oil->cc.oldpktcnt >= up->channel_oil->cc.pktcnt) && |
e43b8697 DS |
1444 | (up->channel_oil->cc.lastused/100 > 30)) |
1445 | { | |
1446 | if (PIM_DEBUG_TRACE) | |
1447 | { | |
1448 | zlog_debug ("%s: %s old packet count is equal or lastused is greater than 30", | |
8bfb8b67 | 1449 | __PRETTY_FUNCTION__, up->sg_str); |
e43b8697 DS |
1450 | zlog_debug ("%s: %ld %ld %lld", __PRETTY_FUNCTION__, up->channel_oil->cc.oldpktcnt, up->channel_oil->cc.pktcnt, up->channel_oil->cc.lastused/100); |
1451 | } | |
1452 | return; | |
1453 | } | |
1454 | ||
1bf16443 | 1455 | if (pim_upstream_kat_start_ok(up)) { |
1456 | /* Add a source reference to the stream if | |
1457 | * one doesn't already exist */ | |
1458 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) | |
1459 | { | |
1460 | if (PIM_DEBUG_TRACE) | |
8bfb8b67 DS |
1461 | zlog_debug ("source reference created on kat restart %s", up->sg_str); |
1462 | ||
1bf16443 | 1463 | pim_upstream_ref(up, PIM_UPSTREAM_FLAG_MASK_SRC_STREAM); |
1464 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); | |
1465 | pim_upstream_fhr_kat_start(up); | |
1466 | } | |
1467 | pim_upstream_keep_alive_timer_start(up, qpim_keep_alive_time); | |
1468 | } | |
1469 | ||
1470 | if (up->sptbit != PIM_UPSTREAM_SPTBIT_TRUE) | |
1471 | { | |
1472 | pim_upstream_set_sptbit(up, up->rpf.source_nexthop.interface); | |
1473 | } | |
e43b8697 | 1474 | return; |
9c5e4d62 DS |
1475 | } |
1476 | ||
040d86ad DS |
1477 | void |
1478 | pim_upstream_init (void) | |
0f588989 | 1479 | { |
9c5e4d62 DS |
1480 | pim_upstream_sg_wheel = wheel_init (master, 31000, 100, |
1481 | pim_upstream_hash_key, | |
1482 | pim_upstream_sg_running); | |
0f588989 DS |
1483 | pim_upstream_hash = hash_create_size (8192, pim_upstream_hash_key, |
1484 | pim_upstream_equal); | |
1485 | ||
1486 | pim_upstream_list = list_new (); | |
1487 | pim_upstream_list->del = (void (*)(void *)) pim_upstream_free; | |
03417ccd | 1488 | pim_upstream_list->cmp = pim_upstream_compare; |
0f588989 DS |
1489 | |
1490 | } |