]>
Commit | Line | Data |
---|---|---|
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 | |
12e41d03 DL |
19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "zebra/rib.h" | |
24 | ||
25 | #include "log.h" | |
26 | #include "zclient.h" | |
27 | #include "memory.h" | |
28 | #include "thread.h" | |
29 | #include "linklist.h" | |
dfe43e25 DW |
30 | #include "vty.h" |
31 | #include "plist.h" | |
0f588989 DS |
32 | #include "hash.h" |
33 | #include "jhash.h" | |
9c5e4d62 | 34 | #include "wheel.h" |
12e41d03 DL |
35 | |
36 | #include "pimd.h" | |
37 | #include "pim_pim.h" | |
38 | #include "pim_str.h" | |
39 | #include "pim_time.h" | |
40 | #include "pim_iface.h" | |
41 | #include "pim_join.h" | |
42 | #include "pim_zlookup.h" | |
43 | #include "pim_upstream.h" | |
44 | #include "pim_ifchannel.h" | |
45 | #include "pim_neighbor.h" | |
46 | #include "pim_rpf.h" | |
47 | #include "pim_zebra.h" | |
48 | #include "pim_oil.h" | |
49 | #include "pim_macro.h" | |
8f5f5e91 | 50 | #include "pim_rp.h" |
f14248dd | 51 | #include "pim_br.h" |
627ed2a3 | 52 | #include "pim_register.h" |
3c72d654 | 53 | #include "pim_msdp.h" |
12e41d03 | 54 | |
0f588989 DS |
55 | struct hash *pim_upstream_hash = NULL; |
56 | struct list *pim_upstream_list = NULL; | |
9c5e4d62 | 57 | struct timer_wheel *pim_upstream_sg_wheel = NULL; |
0f588989 | 58 | |
12e41d03 DL |
59 | static void join_timer_start(struct pim_upstream *up); |
60 | static void pim_upstream_update_assert_tracking_desired(struct pim_upstream *up); | |
61 | ||
cfa91a87 DS |
62 | /* |
63 | * A (*,G) or a (*,*) is going away | |
64 | * remove the parent pointer from | |
65 | * those pointing at us | |
66 | */ | |
67 | static void | |
68 | pim_upstream_remove_children (struct pim_upstream *up) | |
69 | { | |
cfa91a87 DS |
70 | struct pim_upstream *child; |
71 | ||
03417ccd | 72 | if (!up->sources) |
cfa91a87 DS |
73 | return; |
74 | ||
03417ccd | 75 | while (!list_isempty (up->sources)) |
cfa91a87 | 76 | { |
03417ccd DS |
77 | child = listnode_head (up->sources); |
78 | child->parent = NULL; | |
79 | listnode_delete (up->sources, child); | |
cfa91a87 DS |
80 | } |
81 | } | |
82 | ||
83 | /* | |
84 | * A (*,G) or a (*,*) is being created | |
85 | * Find the children that would point | |
86 | * at us. | |
87 | */ | |
88 | static void | |
89 | pim_upstream_find_new_children (struct pim_upstream *up) | |
90 | { | |
91 | struct pim_upstream *child; | |
92 | struct listnode *ch_node; | |
93 | ||
4ed0af70 DS |
94 | if ((up->sg.src.s_addr != INADDR_ANY) && |
95 | (up->sg.grp.s_addr != INADDR_ANY)) | |
cfa91a87 DS |
96 | return; |
97 | ||
4ed0af70 DS |
98 | if ((up->sg.src.s_addr == INADDR_ANY) && |
99 | (up->sg.grp.s_addr == INADDR_ANY)) | |
cfa91a87 DS |
100 | return; |
101 | ||
0f588989 | 102 | for (ALL_LIST_ELEMENTS_RO (pim_upstream_list, ch_node, child)) |
cfa91a87 | 103 | { |
4ed0af70 | 104 | if ((up->sg.grp.s_addr != INADDR_ANY) && |
0f588989 | 105 | (child->sg.grp.s_addr == up->sg.grp.s_addr) && |
cfa91a87 | 106 | (child != up)) |
03417ccd DS |
107 | { |
108 | child->parent = up; | |
109 | listnode_add_sort (up->sources, child); | |
110 | } | |
cfa91a87 DS |
111 | } |
112 | } | |
113 | ||
4d99418b DS |
114 | /* |
115 | * If we have a (*,*) || (S,*) there is no parent | |
116 | * If we have a (S,G), find the (*,G) | |
117 | * If we have a (*,G), find the (*,*) | |
118 | */ | |
119 | static struct pim_upstream * | |
03417ccd | 120 | pim_upstream_find_parent (struct pim_upstream *child) |
4d99418b | 121 | { |
03417ccd DS |
122 | struct prefix_sg any = child->sg; |
123 | struct pim_upstream *up = NULL; | |
4d99418b DS |
124 | |
125 | // (S,G) | |
03417ccd DS |
126 | if ((child->sg.src.s_addr != INADDR_ANY) && |
127 | (child->sg.grp.s_addr != INADDR_ANY)) | |
4d99418b | 128 | { |
4ed0af70 | 129 | any.src.s_addr = INADDR_ANY; |
03417ccd DS |
130 | up = pim_upstream_find (&any); |
131 | ||
132 | if (up) | |
133 | listnode_add (up->sources, child); | |
134 | ||
135 | return up; | |
4d99418b DS |
136 | } |
137 | ||
03417ccd | 138 | return NULL; |
4d99418b DS |
139 | } |
140 | ||
12e41d03 DL |
141 | void pim_upstream_free(struct pim_upstream *up) |
142 | { | |
143 | XFREE(MTYPE_PIM_UPSTREAM, up); | |
144 | } | |
145 | ||
146 | static void upstream_channel_oil_detach(struct pim_upstream *up) | |
147 | { | |
148 | if (up->channel_oil) { | |
149 | pim_channel_oil_del(up->channel_oil); | |
25a335e0 | 150 | up->channel_oil = NULL; |
12e41d03 DL |
151 | } |
152 | } | |
153 | ||
e5905a3b DS |
154 | void |
155 | pim_upstream_del(struct pim_upstream *up, const char *name) | |
12e41d03 | 156 | { |
7667c556 | 157 | bool notify_msdp = false; |
158 | ||
3197cb1e DS |
159 | if (PIM_DEBUG_TRACE) |
160 | zlog_debug ("%s(%s): Delete %s ref count: %d", | |
161 | __PRETTY_FUNCTION__, name, up->sg_str, up->ref_count); | |
162 | ||
e5905a3b DS |
163 | --up->ref_count; |
164 | ||
165 | if (up->ref_count >= 1) | |
166 | return; | |
167 | ||
12e41d03 | 168 | THREAD_OFF(up->t_join_timer); |
f14248dd | 169 | THREAD_OFF(up->t_ka_timer); |
792f4d29 | 170 | THREAD_OFF(up->t_rs_timer); |
1bf16443 | 171 | THREAD_OFF(up->t_msdp_reg_timer); |
12e41d03 | 172 | |
7667c556 | 173 | if (up->join_state == PIM_UPSTREAM_JOINED) { |
b5e2377c | 174 | pim_joinprune_send (&up->rpf, up, 0); |
7667c556 | 175 | if (up->sg.src.s_addr == INADDR_ANY) { |
176 | /* if a (*, G) entry in the joined state is being deleted we | |
177 | * need to notify MSDP */ | |
178 | notify_msdp = true; | |
179 | } | |
180 | } | |
181 | ||
36e466fe | 182 | if (up->sg.src.s_addr != INADDR_ANY) { |
9c5e4d62 | 183 | wheel_remove_item (pim_upstream_sg_wheel, up); |
36e466fe | 184 | notify_msdp = true; |
185 | } | |
9c5e4d62 | 186 | |
cfa91a87 | 187 | pim_upstream_remove_children (up); |
6a78764e | 188 | pim_mroute_del (up->channel_oil, __PRETTY_FUNCTION__); |
12e41d03 DL |
189 | upstream_channel_oil_detach(up); |
190 | ||
03417ccd DS |
191 | if (up->sources) |
192 | list_delete (up->sources); | |
193 | up->sources = NULL; | |
194 | ||
12e41d03 DL |
195 | /* |
196 | notice that listnode_delete() can't be moved | |
197 | into pim_upstream_free() because the later is | |
198 | called by list_delete_all_node() | |
199 | */ | |
03417ccd DS |
200 | if (up->parent) |
201 | { | |
202 | listnode_delete (up->parent->sources, up); | |
203 | up->parent = NULL; | |
204 | } | |
0f588989 DS |
205 | listnode_delete (pim_upstream_list, up); |
206 | hash_release (pim_upstream_hash, up); | |
12e41d03 | 207 | |
7667c556 | 208 | if (notify_msdp) { |
36e466fe | 209 | pim_msdp_up_del(&up->sg); |
7667c556 | 210 | } |
12e41d03 DL |
211 | pim_upstream_free(up); |
212 | } | |
213 | ||
56638739 DS |
214 | void |
215 | pim_upstream_send_join (struct pim_upstream *up) | |
12e41d03 | 216 | { |
3197cb1e | 217 | if (PIM_DEBUG_TRACE) { |
eaa54bdb | 218 | char rpf_str[PREFIX_STRLEN]; |
63c59d0c | 219 | pim_addr_dump("<rpf?>", &up->rpf.rpf_addr, rpf_str, sizeof(rpf_str)); |
05e451f8 | 220 | zlog_debug ("%s: RPF'%s=%s(%s) for Interface %s", __PRETTY_FUNCTION__, |
8bfb8b67 | 221 | up->sg_str, rpf_str, pim_upstream_state2str (up->join_state), |
56638739 | 222 | up->rpf.source_nexthop.interface->name); |
63c59d0c | 223 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) { |
05e451f8 | 224 | zlog_debug("%s: can't send join upstream: RPF'%s=%s", |
56638739 | 225 | __PRETTY_FUNCTION__, |
8bfb8b67 | 226 | up->sg_str, rpf_str); |
12e41d03 DL |
227 | /* warning only */ |
228 | } | |
229 | } | |
56638739 | 230 | |
12e41d03 | 231 | /* send Join(S,G) to the current upstream neighbor */ |
b5e2377c | 232 | pim_joinprune_send(&up->rpf, up, 1 /* join */); |
12e41d03 DL |
233 | } |
234 | ||
235 | static int on_join_timer(struct thread *t) | |
236 | { | |
237 | struct pim_upstream *up; | |
238 | ||
12e41d03 | 239 | up = THREAD_ARG(t); |
12e41d03 | 240 | |
bb6e291f DS |
241 | up->t_join_timer = NULL; |
242 | ||
243 | /* | |
244 | * In the case of a HFR we will not ahve anyone to send this to. | |
245 | */ | |
0bf27c5c | 246 | if (PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) |
bb6e291f DS |
247 | return 0; |
248 | ||
eb345962 DS |
249 | /* |
250 | * Don't send the join if the outgoing interface is a loopback | |
251 | * But since this might change leave the join timer running | |
252 | */ | |
253 | if (!if_is_loopback (up->rpf.source_nexthop.interface)) | |
254 | pim_upstream_send_join (up); | |
12e41d03 | 255 | |
12e41d03 DL |
256 | join_timer_start(up); |
257 | ||
258 | return 0; | |
259 | } | |
260 | ||
261 | static void join_timer_start(struct pim_upstream *up) | |
262 | { | |
263 | if (PIM_DEBUG_PIM_EVENTS) { | |
05e451f8 | 264 | zlog_debug("%s: starting %d sec timer for upstream (S,G)=%s", |
12e41d03 DL |
265 | __PRETTY_FUNCTION__, |
266 | qpim_t_periodic, | |
8bfb8b67 | 267 | up->sg_str); |
12e41d03 DL |
268 | } |
269 | ||
8e38a2cf | 270 | THREAD_OFF (up->t_join_timer); |
12e41d03 DL |
271 | THREAD_TIMER_ON(master, up->t_join_timer, |
272 | on_join_timer, | |
273 | up, qpim_t_periodic); | |
274 | } | |
275 | ||
276 | void pim_upstream_join_timer_restart(struct pim_upstream *up) | |
277 | { | |
278 | THREAD_OFF(up->t_join_timer); | |
279 | join_timer_start(up); | |
280 | } | |
281 | ||
282 | static void pim_upstream_join_timer_restart_msec(struct pim_upstream *up, | |
283 | int interval_msec) | |
284 | { | |
285 | if (PIM_DEBUG_PIM_EVENTS) { | |
05e451f8 | 286 | zlog_debug("%s: restarting %d msec timer for upstream (S,G)=%s", |
12e41d03 DL |
287 | __PRETTY_FUNCTION__, |
288 | interval_msec, | |
8bfb8b67 | 289 | up->sg_str); |
12e41d03 DL |
290 | } |
291 | ||
292 | THREAD_OFF(up->t_join_timer); | |
293 | THREAD_TIMER_MSEC_ON(master, up->t_join_timer, | |
294 | on_join_timer, | |
295 | up, interval_msec); | |
296 | } | |
297 | ||
298 | void pim_upstream_join_suppress(struct pim_upstream *up, | |
299 | struct in_addr rpf_addr, | |
300 | int holdtime) | |
301 | { | |
302 | long t_joinsuppress_msec; | |
303 | long join_timer_remain_msec; | |
304 | ||
305 | t_joinsuppress_msec = MIN(pim_if_t_suppressed_msec(up->rpf.source_nexthop.interface), | |
306 | 1000 * holdtime); | |
307 | ||
308 | join_timer_remain_msec = pim_time_timer_remain_msec(up->t_join_timer); | |
309 | ||
3197cb1e | 310 | if (PIM_DEBUG_TRACE) { |
eaa54bdb | 311 | char rpf_str[INET_ADDRSTRLEN]; |
12e41d03 | 312 | pim_inet4_dump("<rpf?>", rpf_addr, rpf_str, sizeof(rpf_str)); |
05e451f8 | 313 | zlog_debug("%s %s: detected Join%s to RPF'(S,G)=%s: join_timer=%ld msec t_joinsuppress=%ld msec", |
12e41d03 | 314 | __FILE__, __PRETTY_FUNCTION__, |
8bfb8b67 | 315 | up->sg_str, |
12e41d03 DL |
316 | rpf_str, |
317 | join_timer_remain_msec, t_joinsuppress_msec); | |
318 | } | |
319 | ||
320 | if (join_timer_remain_msec < t_joinsuppress_msec) { | |
3197cb1e | 321 | if (PIM_DEBUG_TRACE) { |
05e451f8 | 322 | zlog_debug("%s %s: suppressing Join(S,G)=%s for %ld msec", |
12e41d03 | 323 | __FILE__, __PRETTY_FUNCTION__, |
8bfb8b67 | 324 | up->sg_str, t_joinsuppress_msec); |
12e41d03 DL |
325 | } |
326 | ||
327 | pim_upstream_join_timer_restart_msec(up, t_joinsuppress_msec); | |
328 | } | |
329 | } | |
330 | ||
331 | void pim_upstream_join_timer_decrease_to_t_override(const char *debug_label, | |
c48a612c | 332 | struct pim_upstream *up) |
12e41d03 DL |
333 | { |
334 | long join_timer_remain_msec; | |
335 | int t_override_msec; | |
336 | ||
337 | join_timer_remain_msec = pim_time_timer_remain_msec(up->t_join_timer); | |
338 | t_override_msec = pim_if_t_override_msec(up->rpf.source_nexthop.interface); | |
339 | ||
3197cb1e | 340 | if (PIM_DEBUG_TRACE) { |
eaa54bdb | 341 | char rpf_str[INET_ADDRSTRLEN]; |
c48a612c | 342 | pim_inet4_dump("<rpf?>", up->rpf.rpf_addr.u.prefix4, rpf_str, sizeof(rpf_str)); |
05e451f8 | 343 | zlog_debug("%s: to RPF'%s=%s: join_timer=%ld msec t_override=%d msec", |
12e41d03 | 344 | debug_label, |
8bfb8b67 | 345 | up->sg_str, rpf_str, |
12e41d03 DL |
346 | join_timer_remain_msec, t_override_msec); |
347 | } | |
348 | ||
349 | if (join_timer_remain_msec > t_override_msec) { | |
3197cb1e | 350 | if (PIM_DEBUG_TRACE) { |
05e451f8 | 351 | zlog_debug("%s: decreasing (S,G)=%s join timer to t_override=%d msec", |
12e41d03 | 352 | debug_label, |
8bfb8b67 | 353 | up->sg_str, |
12e41d03 DL |
354 | t_override_msec); |
355 | } | |
356 | ||
357 | pim_upstream_join_timer_restart_msec(up, t_override_msec); | |
358 | } | |
359 | } | |
360 | ||
361 | static void forward_on(struct pim_upstream *up) | |
362 | { | |
12e41d03 DL |
363 | struct listnode *chnode; |
364 | struct listnode *chnextnode; | |
12e41d03 DL |
365 | struct pim_interface *pim_ifp; |
366 | struct pim_ifchannel *ch; | |
367 | ||
ea4a71fc DS |
368 | /* scan (S,G) state */ |
369 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
370 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
371 | if (!pim_ifp) |
372 | continue; | |
373 | ||
ea4a71fc DS |
374 | if (ch->upstream != up) |
375 | continue; | |
12e41d03 | 376 | |
ea4a71fc DS |
377 | if (pim_macro_chisin_oiflist(ch)) |
378 | pim_forward_start(ch); | |
12e41d03 | 379 | |
ea4a71fc | 380 | } /* scan iface channel list */ |
12e41d03 DL |
381 | } |
382 | ||
383 | static void forward_off(struct pim_upstream *up) | |
384 | { | |
12e41d03 DL |
385 | struct listnode *chnode; |
386 | struct listnode *chnextnode; | |
12e41d03 DL |
387 | struct pim_interface *pim_ifp; |
388 | struct pim_ifchannel *ch; | |
389 | ||
ea4a71fc DS |
390 | /* scan per-interface (S,G) state */ |
391 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
392 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
393 | if (!pim_ifp) |
394 | continue; | |
395 | ||
ea4a71fc DS |
396 | if (ch->upstream != up) |
397 | continue; | |
12e41d03 | 398 | |
ea4a71fc | 399 | pim_forward_stop(ch); |
12e41d03 | 400 | |
ea4a71fc | 401 | } /* scan iface channel list */ |
12e41d03 DL |
402 | } |
403 | ||
bb6e291f DS |
404 | static int |
405 | pim_upstream_could_register (struct pim_upstream *up) | |
406 | { | |
407 | struct pim_interface *pim_ifp = up->rpf.source_nexthop.interface->info; | |
408 | ||
35917570 | 409 | if (pim_ifp && PIM_I_am_DR (pim_ifp) && |
bb6e291f DS |
410 | pim_if_connected_to_source (up->rpf.source_nexthop.interface, up->sg.src)) |
411 | return 1; | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
7fcdfb34 DS |
416 | void |
417 | pim_upstream_switch(struct pim_upstream *up, | |
418 | enum pim_upstream_state new_state) | |
12e41d03 DL |
419 | { |
420 | enum pim_upstream_state old_state = up->join_state; | |
421 | ||
12e41d03 | 422 | if (PIM_DEBUG_PIM_EVENTS) { |
c9802954 | 423 | zlog_debug("%s: PIM_UPSTREAM_%s: (S,G) old: %s new: %s", |
12e41d03 | 424 | __PRETTY_FUNCTION__, |
8bfb8b67 | 425 | up->sg_str, |
c9802954 DS |
426 | pim_upstream_state2str (up->join_state), |
427 | pim_upstream_state2str (new_state)); | |
12e41d03 DL |
428 | } |
429 | ||
bb027ee8 DS |
430 | /* |
431 | * This code still needs work. | |
432 | */ | |
433 | switch (up->join_state) | |
434 | { | |
435 | case PIM_UPSTREAM_PRUNE: | |
0bf27c5c | 436 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) |
7747bad6 DS |
437 | { |
438 | up->join_state = new_state; | |
439 | up->state_transition = pim_time_monotonic_sec (); | |
440 | } | |
441 | break; | |
bb027ee8 DS |
442 | case PIM_UPSTREAM_JOIN_PENDING: |
443 | break; | |
444 | case PIM_UPSTREAM_NOTJOINED: | |
445 | case PIM_UPSTREAM_JOINED: | |
446 | up->join_state = new_state; | |
e5b6b229 DS |
447 | if (old_state != new_state) |
448 | up->state_transition = pim_time_monotonic_sec(); | |
bb027ee8 DS |
449 | |
450 | break; | |
451 | } | |
452 | ||
12e41d03 DL |
453 | pim_upstream_update_assert_tracking_desired(up); |
454 | ||
455 | if (new_state == PIM_UPSTREAM_JOINED) { | |
81900c5a DS |
456 | if (old_state != PIM_UPSTREAM_JOINED) |
457 | { | |
0bf27c5c | 458 | int old_fhr = PIM_UPSTREAM_FLAG_TEST_FHR(up->flags); |
81900c5a | 459 | forward_on(up); |
7667c556 | 460 | pim_msdp_up_join_state_changed(up); |
0bf27c5c | 461 | if (pim_upstream_could_register (up)) |
bb6e291f | 462 | { |
0bf27c5c | 463 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); |
a9b59879 | 464 | if (!old_fhr && PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) |
bb6e291f DS |
465 | { |
466 | pim_upstream_keep_alive_timer_start (up, qpim_keep_alive_time); | |
467 | pim_channel_add_oif (up->channel_oil, pim_regiface, PIM_OIF_FLAG_PROTO_PIM); | |
468 | } | |
469 | } | |
470 | else | |
471 | { | |
472 | pim_upstream_send_join (up); | |
473 | join_timer_start (up); | |
474 | } | |
81900c5a DS |
475 | } |
476 | else | |
477 | { | |
478 | forward_on (up); | |
479 | } | |
12e41d03 DL |
480 | } |
481 | else { | |
482 | forward_off(up); | |
7667c556 | 483 | if (old_state == PIM_UPSTREAM_JOINED) |
484 | pim_msdp_up_join_state_changed(up); | |
b5e2377c | 485 | pim_joinprune_send(&up->rpf, up, 0 /* prune */); |
7fcdfb34 DS |
486 | if (up->t_join_timer) |
487 | THREAD_OFF(up->t_join_timer); | |
12e41d03 | 488 | } |
12e41d03 DL |
489 | } |
490 | ||
03417ccd DS |
491 | static int |
492 | pim_upstream_compare (void *arg1, void *arg2) | |
493 | { | |
494 | const struct pim_upstream *up1 = (const struct pim_upstream *)arg1; | |
495 | const struct pim_upstream *up2 = (const struct pim_upstream *)arg2; | |
496 | ||
497 | if (ntohl(up1->sg.grp.s_addr) < ntohl(up2->sg.grp.s_addr)) | |
498 | return -1; | |
499 | ||
500 | if (ntohl(up1->sg.grp.s_addr) > ntohl(up2->sg.grp.s_addr)) | |
501 | return 1; | |
502 | ||
503 | if (ntohl(up1->sg.src.s_addr) < ntohl(up2->sg.src.s_addr)) | |
504 | return -1; | |
505 | ||
506 | if (ntohl(up1->sg.src.s_addr) > ntohl(up2->sg.src.s_addr)) | |
507 | return 1; | |
508 | ||
509 | return 0; | |
510 | } | |
511 | ||
07335c8d DS |
512 | static struct pim_upstream * |
513 | pim_upstream_new (struct prefix_sg *sg, | |
514 | struct interface *incoming, | |
515 | int flags) | |
12e41d03 | 516 | { |
2f702571 | 517 | enum pim_rpf_result rpf_result; |
07335c8d DS |
518 | struct pim_interface *pim_ifp; |
519 | struct pim_upstream *up; | |
12e41d03 | 520 | |
36d9e7dc | 521 | up = XCALLOC(MTYPE_PIM_UPSTREAM, sizeof(*up)); |
12e41d03 | 522 | if (!up) { |
36d9e7dc | 523 | zlog_err("%s: PIM XCALLOC(%zu) failure", |
12e41d03 | 524 | __PRETTY_FUNCTION__, sizeof(*up)); |
8f5f5e91 | 525 | return NULL; |
12e41d03 DL |
526 | } |
527 | ||
5074a423 | 528 | up->sg = *sg; |
8bfb8b67 | 529 | pim_str_sg_set (sg, up->sg_str); |
0f588989 | 530 | up = hash_get (pim_upstream_hash, up, hash_alloc_intern); |
36d6bd7d | 531 | if (!pim_rp_set_upstream_addr (&up->upstream_addr, sg->src, sg->grp)) |
8f5f5e91 | 532 | { |
3197cb1e | 533 | if (PIM_DEBUG_TRACE) |
8f5f5e91 DS |
534 | zlog_debug("%s: Received a (*,G) with no RP configured", __PRETTY_FUNCTION__); |
535 | ||
03417ccd | 536 | hash_release (pim_upstream_hash, up); |
8f5f5e91 DS |
537 | XFREE (MTYPE_PIM_UPSTREAM, up); |
538 | return NULL; | |
539 | } | |
540 | ||
03417ccd DS |
541 | up->parent = pim_upstream_find_parent (up); |
542 | if (up->sg.src.s_addr == INADDR_ANY) | |
543 | { | |
544 | up->sources = list_new (); | |
545 | up->sources->cmp = pim_upstream_compare; | |
546 | } | |
547 | else | |
548 | up->sources = NULL; | |
549 | ||
cfa91a87 | 550 | pim_upstream_find_new_children (up); |
4a40c37a | 551 | up->flags = flags; |
12e41d03 | 552 | up->ref_count = 1; |
4a4c4a07 DS |
553 | up->t_join_timer = NULL; |
554 | up->t_ka_timer = NULL; | |
792f4d29 | 555 | up->t_rs_timer = NULL; |
1bf16443 | 556 | up->t_msdp_reg_timer = NULL; |
12e41d03 DL |
557 | up->join_state = 0; |
558 | up->state_transition = pim_time_monotonic_sec(); | |
4a4c4a07 | 559 | up->channel_oil = NULL; |
f9e0ab5b | 560 | up->sptbit = PIM_UPSTREAM_SPTBIT_FALSE; |
12e41d03 | 561 | |
f24405b1 | 562 | up->rpf.source_nexthop.interface = NULL; |
63c59d0c DS |
563 | up->rpf.source_nexthop.mrib_nexthop_addr.family = AF_INET; |
564 | up->rpf.source_nexthop.mrib_nexthop_addr.u.prefix4.s_addr = PIM_NET_INADDR_ANY; | |
12e41d03 DL |
565 | up->rpf.source_nexthop.mrib_metric_preference = qpim_infinite_assert_metric.metric_preference; |
566 | up->rpf.source_nexthop.mrib_route_metric = qpim_infinite_assert_metric.route_metric; | |
63c59d0c DS |
567 | up->rpf.rpf_addr.family = AF_INET; |
568 | up->rpf.rpf_addr.u.prefix4.s_addr = PIM_NET_INADDR_ANY; | |
12e41d03 | 569 | |
9c5e4d62 DS |
570 | if (up->sg.src.s_addr != INADDR_ANY) |
571 | wheel_add_item (pim_upstream_sg_wheel, up); | |
572 | ||
d3dd1804 | 573 | rpf_result = pim_rpf_update(up, NULL); |
2f702571 | 574 | if (rpf_result == PIM_RPF_FAILURE) { |
3197cb1e | 575 | if (PIM_DEBUG_TRACE) |
4a40c37a | 576 | zlog_debug ("%s: Attempting to create upstream(%s), Unable to RPF for source", __PRETTY_FUNCTION__, |
8bfb8b67 | 577 | up->sg_str); |
03417ccd DS |
578 | |
579 | if (up->parent) | |
580 | { | |
581 | listnode_delete (up->parent->sources, up); | |
582 | up->parent = NULL; | |
583 | } | |
9c5e4d62 DS |
584 | |
585 | if (up->sg.src.s_addr != INADDR_ANY) | |
586 | wheel_remove_item (pim_upstream_sg_wheel, up); | |
587 | ||
03417ccd DS |
588 | pim_upstream_remove_children (up); |
589 | if (up->sources) | |
590 | list_delete (up->sources); | |
591 | ||
592 | hash_release (pim_upstream_hash, up); | |
2f702571 DS |
593 | XFREE(MTYPE_PIM_UPSTREAM, up); |
594 | return NULL; | |
595 | } | |
12e41d03 | 596 | |
07335c8d DS |
597 | pim_ifp = up->rpf.source_nexthop.interface->info; |
598 | if (pim_ifp) | |
599 | up->channel_oil = pim_channel_oil_add(&up->sg, pim_ifp->mroute_vif_index); | |
600 | ||
0f588989 | 601 | listnode_add_sort(pim_upstream_list, up); |
12e41d03 | 602 | |
3197cb1e | 603 | if (PIM_DEBUG_TRACE) |
8bfb8b67 | 604 | zlog_debug ("%s: Created Upstream %s", __PRETTY_FUNCTION__, up->sg_str); |
03417ccd | 605 | |
12e41d03 DL |
606 | return up; |
607 | } | |
608 | ||
4ed0af70 | 609 | struct pim_upstream *pim_upstream_find(struct prefix_sg *sg) |
12e41d03 | 610 | { |
0f588989 DS |
611 | struct pim_upstream lookup; |
612 | struct pim_upstream *up = NULL; | |
12e41d03 | 613 | |
0f588989 DS |
614 | lookup.sg = *sg; |
615 | up = hash_lookup (pim_upstream_hash, &lookup); | |
616 | return up; | |
12e41d03 DL |
617 | } |
618 | ||
1bf16443 | 619 | static void pim_upstream_ref(struct pim_upstream *up, int flags) |
620 | { | |
621 | up->flags |= flags; | |
622 | ++up->ref_count; | |
623 | } | |
624 | ||
4ed0af70 | 625 | struct pim_upstream *pim_upstream_add(struct prefix_sg *sg, |
4a40c37a | 626 | struct interface *incoming, |
e5905a3b | 627 | int flags, const char *name) |
12e41d03 | 628 | { |
594a78cc | 629 | struct pim_upstream *up = NULL; |
e5905a3b | 630 | int found = 0; |
5074a423 | 631 | up = pim_upstream_find(sg); |
12e41d03 | 632 | if (up) { |
1bf16443 | 633 | pim_upstream_ref(up, flags); |
e5905a3b | 634 | found = 1; |
12e41d03 DL |
635 | } |
636 | else { | |
4a40c37a | 637 | up = pim_upstream_new(sg, incoming, flags); |
12e41d03 DL |
638 | } |
639 | ||
e5905a3b | 640 | if (PIM_DEBUG_TRACE) |
f4075cb4 DS |
641 | { |
642 | if (up) | |
3197cb1e | 643 | zlog_debug("%s(%s): %s, found: %d: ref_count: %d", |
f4075cb4 | 644 | __PRETTY_FUNCTION__, name, |
8bfb8b67 | 645 | up->sg_str, found, |
f4075cb4 DS |
646 | up->ref_count); |
647 | else | |
648 | zlog_debug("%s(%s): (%s) failure to create", | |
649 | __PRETTY_FUNCTION__, name, | |
650 | pim_str_sg_dump (sg)); | |
651 | } | |
12e41d03 | 652 | |
e5905a3b | 653 | return up; |
12e41d03 DL |
654 | } |
655 | ||
9f44d042 | 656 | int |
7a3ddda5 DS |
657 | pim_upstream_evaluate_join_desired_interface (struct pim_upstream *up, |
658 | struct pim_ifchannel *ch) | |
659 | { | |
660 | struct pim_upstream *parent = up->parent; | |
661 | ||
662 | if (ch->upstream == up) | |
663 | { | |
664 | if (!pim_macro_ch_lost_assert(ch) && pim_macro_chisin_joins_or_include(ch)) | |
665 | return 1; | |
46c8aab8 DS |
666 | |
667 | if (PIM_IF_FLAG_TEST_S_G_RPT(ch->flags)) | |
668 | return 0; | |
7a3ddda5 | 669 | } |
46c8aab8 | 670 | |
7a3ddda5 DS |
671 | /* |
672 | * joins (*,G) | |
673 | */ | |
674 | if (parent && ch->upstream == parent) | |
675 | { | |
676 | if (!pim_macro_ch_lost_assert (ch) && pim_macro_chisin_joins_or_include (ch)) | |
677 | return 1; | |
678 | } | |
679 | ||
680 | return 0; | |
681 | } | |
682 | ||
12e41d03 DL |
683 | /* |
684 | Evaluate JoinDesired(S,G): | |
685 | ||
686 | JoinDesired(S,G) is true if there is a downstream (S,G) interface I | |
687 | in the set: | |
688 | ||
689 | inherited_olist(S,G) = | |
690 | joins(S,G) (+) pim_include(S,G) (-) lost_assert(S,G) | |
691 | ||
692 | JoinDesired(S,G) may be affected by changes in the following: | |
693 | ||
694 | pim_ifp->primary_address | |
695 | pim_ifp->pim_dr_addr | |
696 | ch->ifassert_winner_metric | |
697 | ch->ifassert_winner | |
698 | ch->local_ifmembership | |
699 | ch->ifjoin_state | |
700 | ch->upstream->rpf.source_nexthop.mrib_metric_preference | |
701 | ch->upstream->rpf.source_nexthop.mrib_route_metric | |
702 | ch->upstream->rpf.source_nexthop.interface | |
703 | ||
704 | See also pim_upstream_update_join_desired() below. | |
705 | */ | |
706 | int pim_upstream_evaluate_join_desired(struct pim_upstream *up) | |
707 | { | |
12e41d03 DL |
708 | struct listnode *chnode; |
709 | struct listnode *chnextnode; | |
12e41d03 DL |
710 | struct pim_interface *pim_ifp; |
711 | struct pim_ifchannel *ch; | |
7a3ddda5 | 712 | int ret = 0; |
12e41d03 | 713 | |
ea4a71fc DS |
714 | /* scan per-interface (S,G) state */ |
715 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) | |
716 | { | |
717 | pim_ifp = ch->interface->info; | |
718 | if (!pim_ifp) | |
719 | continue; | |
12e41d03 | 720 | |
ea4a71fc DS |
721 | ret += pim_upstream_evaluate_join_desired_interface (up, ch); |
722 | } /* scan iface channel list */ | |
12e41d03 | 723 | |
7a3ddda5 | 724 | return ret; /* false */ |
12e41d03 DL |
725 | } |
726 | ||
727 | /* | |
728 | See also pim_upstream_evaluate_join_desired() above. | |
729 | */ | |
730 | void pim_upstream_update_join_desired(struct pim_upstream *up) | |
731 | { | |
732 | int was_join_desired; /* boolean */ | |
733 | int is_join_desired; /* boolean */ | |
734 | ||
735 | was_join_desired = PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED(up->flags); | |
736 | ||
737 | is_join_desired = pim_upstream_evaluate_join_desired(up); | |
738 | if (is_join_desired) | |
739 | PIM_UPSTREAM_FLAG_SET_DR_JOIN_DESIRED(up->flags); | |
740 | else | |
741 | PIM_UPSTREAM_FLAG_UNSET_DR_JOIN_DESIRED(up->flags); | |
742 | ||
743 | /* switched from false to true */ | |
744 | if (is_join_desired && !was_join_desired) { | |
12e41d03 DL |
745 | pim_upstream_switch(up, PIM_UPSTREAM_JOINED); |
746 | return; | |
747 | } | |
748 | ||
749 | /* switched from true to false */ | |
750 | if (!is_join_desired && was_join_desired) { | |
12e41d03 DL |
751 | pim_upstream_switch(up, PIM_UPSTREAM_NOTJOINED); |
752 | return; | |
753 | } | |
754 | } | |
755 | ||
756 | /* | |
757 | RFC 4601 4.5.7. Sending (S,G) Join/Prune Messages | |
758 | Transitions from Joined State | |
759 | RPF'(S,G) GenID changes | |
760 | ||
761 | The upstream (S,G) state machine remains in Joined state. If the | |
762 | Join Timer is set to expire in more than t_override seconds, reset | |
763 | it so that it expires after t_override seconds. | |
764 | */ | |
765 | void pim_upstream_rpf_genid_changed(struct in_addr neigh_addr) | |
766 | { | |
767 | struct listnode *up_node; | |
768 | struct listnode *up_nextnode; | |
769 | struct pim_upstream *up; | |
770 | ||
771 | /* | |
0f588989 DS |
772 | * Scan all (S,G) upstreams searching for RPF'(S,G)=neigh_addr |
773 | */ | |
774 | for (ALL_LIST_ELEMENTS(pim_upstream_list, up_node, up_nextnode, up)) { | |
12e41d03 | 775 | |
3197cb1e | 776 | if (PIM_DEBUG_TRACE) { |
eaa54bdb DW |
777 | char neigh_str[INET_ADDRSTRLEN]; |
778 | char rpf_addr_str[PREFIX_STRLEN]; | |
12e41d03 | 779 | pim_inet4_dump("<neigh?>", neigh_addr, neigh_str, sizeof(neigh_str)); |
63c59d0c | 780 | pim_addr_dump("<rpf?>", &up->rpf.rpf_addr, rpf_addr_str, sizeof(rpf_addr_str)); |
05e451f8 | 781 | zlog_debug("%s: matching neigh=%s against upstream (S,G)=%s joined=%d rpf_addr=%s", |
12e41d03 | 782 | __PRETTY_FUNCTION__, |
8bfb8b67 | 783 | neigh_str, up->sg_str, |
12e41d03 DL |
784 | up->join_state == PIM_UPSTREAM_JOINED, |
785 | rpf_addr_str); | |
786 | } | |
787 | ||
788 | /* consider only (S,G) upstream in Joined state */ | |
789 | if (up->join_state != PIM_UPSTREAM_JOINED) | |
790 | continue; | |
791 | ||
792 | /* match RPF'(S,G)=neigh_addr */ | |
63c59d0c | 793 | if (up->rpf.rpf_addr.u.prefix4.s_addr != neigh_addr.s_addr) |
12e41d03 DL |
794 | continue; |
795 | ||
796 | pim_upstream_join_timer_decrease_to_t_override("RPF'(S,G) GenID change", | |
c48a612c | 797 | up); |
12e41d03 DL |
798 | } |
799 | } | |
800 | ||
801 | ||
802 | void pim_upstream_rpf_interface_changed(struct pim_upstream *up, | |
803 | struct interface *old_rpf_ifp) | |
804 | { | |
ea4a71fc DS |
805 | struct listnode *chnode; |
806 | struct listnode *chnextnode; | |
807 | struct pim_ifchannel *ch; | |
808 | struct pim_interface *pim_ifp; | |
809 | ||
810 | /* search all ifchannels */ | |
811 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
812 | ||
813 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
814 | if (!pim_ifp) |
815 | continue; | |
816 | ||
ea4a71fc DS |
817 | if (ch->upstream != up) |
818 | continue; | |
12e41d03 | 819 | |
ea4a71fc DS |
820 | if (ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) { |
821 | if ( | |
822 | /* RPF_interface(S) was NOT I */ | |
823 | (old_rpf_ifp == ch->interface) | |
824 | && | |
825 | /* RPF_interface(S) stopped being I */ | |
826 | (ch->upstream->rpf.source_nexthop.interface != ch->interface) | |
827 | ) { | |
828 | assert_action_a5(ch); | |
829 | } | |
830 | } /* PIM_IFASSERT_I_AM_LOSER */ | |
12e41d03 | 831 | |
ea4a71fc | 832 | pim_ifchannel_update_assert_tracking_desired(ch); |
12e41d03 DL |
833 | } |
834 | } | |
835 | ||
836 | void pim_upstream_update_could_assert(struct pim_upstream *up) | |
837 | { | |
12e41d03 DL |
838 | struct listnode *chnode; |
839 | struct listnode *chnextnode; | |
12e41d03 DL |
840 | struct pim_interface *pim_ifp; |
841 | struct pim_ifchannel *ch; | |
842 | ||
ea4a71fc DS |
843 | /* scan per-interface (S,G) state */ |
844 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
845 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
846 | if (!pim_ifp) |
847 | continue; | |
848 | ||
ea4a71fc DS |
849 | if (ch->upstream != up) |
850 | continue; | |
12e41d03 | 851 | |
ea4a71fc DS |
852 | pim_ifchannel_update_could_assert(ch); |
853 | } /* scan iface channel list */ | |
12e41d03 DL |
854 | } |
855 | ||
856 | void pim_upstream_update_my_assert_metric(struct pim_upstream *up) | |
857 | { | |
12e41d03 DL |
858 | struct listnode *chnode; |
859 | struct listnode *chnextnode; | |
12e41d03 DL |
860 | struct pim_interface *pim_ifp; |
861 | struct pim_ifchannel *ch; | |
862 | ||
ea4a71fc DS |
863 | /* scan per-interface (S,G) state */ |
864 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
865 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
866 | if (!pim_ifp) |
867 | continue; | |
868 | ||
ea4a71fc DS |
869 | if (ch->upstream != up) |
870 | continue; | |
12e41d03 | 871 | |
ea4a71fc | 872 | pim_ifchannel_update_my_assert_metric(ch); |
12e41d03 | 873 | |
ea4a71fc | 874 | } /* scan iface channel list */ |
12e41d03 DL |
875 | } |
876 | ||
877 | static void pim_upstream_update_assert_tracking_desired(struct pim_upstream *up) | |
878 | { | |
12e41d03 DL |
879 | struct listnode *chnode; |
880 | struct listnode *chnextnode; | |
12e41d03 DL |
881 | struct pim_interface *pim_ifp; |
882 | struct pim_ifchannel *ch; | |
883 | ||
ea4a71fc DS |
884 | /* scan per-interface (S,G) state */ |
885 | for (ALL_LIST_ELEMENTS(pim_ifchannel_list, chnode, chnextnode, ch)) { | |
886 | pim_ifp = ch->interface->info; | |
12e41d03 DL |
887 | if (!pim_ifp) |
888 | continue; | |
889 | ||
ea4a71fc DS |
890 | if (ch->upstream != up) |
891 | continue; | |
12e41d03 | 892 | |
ea4a71fc | 893 | pim_ifchannel_update_assert_tracking_desired(ch); |
12e41d03 | 894 | |
ea4a71fc | 895 | } /* scan iface channel list */ |
12e41d03 | 896 | } |
f14248dd | 897 | |
1bf16443 | 898 | /* When kat is stopped CouldRegister goes to false so we need to |
899 | * transition the (S, G) on FHR to NI state and remove reg tunnel | |
900 | * from the OIL */ | |
901 | static void pim_upstream_fhr_kat_expiry(struct pim_upstream *up) | |
902 | { | |
903 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) | |
904 | return; | |
905 | ||
906 | if (PIM_DEBUG_TRACE) | |
8bfb8b67 DS |
907 | zlog_debug ("kat expired on %s; clear fhr reg state", up->sg_str); |
908 | ||
1bf16443 | 909 | /* stop reg-stop timer */ |
910 | THREAD_OFF(up->t_rs_timer); | |
911 | /* remove regiface from the OIL if it is there*/ | |
912 | pim_channel_del_oif (up->channel_oil, pim_regiface, PIM_OIF_FLAG_PROTO_PIM); | |
913 | /* move to "not-joined" */ | |
914 | up->join_state = PIM_UPSTREAM_NOTJOINED; | |
915 | PIM_UPSTREAM_FLAG_UNSET_FHR(up->flags); | |
916 | } | |
917 | ||
918 | /* When kat is started CouldRegister can go to true. And if it does we | |
919 | * need to transition the (S, G) on FHR to JOINED state and add reg tunnel | |
920 | * to the OIL */ | |
921 | static void pim_upstream_fhr_kat_start(struct pim_upstream *up) | |
922 | { | |
923 | if (pim_upstream_could_register(up)) { | |
924 | if (PIM_DEBUG_TRACE) | |
8bfb8b67 DS |
925 | zlog_debug ("kat started on %s; set fhr reg state to joined", up->sg_str); |
926 | ||
1bf16443 | 927 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); |
928 | if (up->join_state == PIM_UPSTREAM_NOTJOINED) { | |
929 | pim_channel_add_oif (up->channel_oil, pim_regiface, PIM_OIF_FLAG_PROTO_PIM); | |
930 | up->join_state = PIM_UPSTREAM_JOINED; | |
931 | } | |
932 | } | |
933 | } | |
934 | ||
f14248dd DS |
935 | /* |
936 | * On an RP, the PMBR value must be cleared when the | |
937 | * Keepalive Timer expires | |
1bf16443 | 938 | * KAT expiry indicates that flow is inactive. If the flow was created or |
939 | * maintained by activity now is the time to deref it. | |
f14248dd DS |
940 | */ |
941 | static int | |
942 | pim_upstream_keep_alive_timer (struct thread *t) | |
943 | { | |
944 | struct pim_upstream *up; | |
945 | ||
946 | up = THREAD_ARG(t); | |
1bf16443 | 947 | up->t_ka_timer = NULL; |
f14248dd | 948 | |
4ed0af70 | 949 | if (I_am_RP (up->sg.grp)) |
1bf16443 | 950 | { |
951 | pim_br_clear_pmbr (&up->sg); | |
952 | /* | |
953 | * We need to do more here :) | |
954 | * But this is the start. | |
955 | */ | |
956 | } | |
14315ea8 | 957 | |
1bf16443 | 958 | /* source is no longer active - pull the SA from MSDP's cache */ |
959 | pim_msdp_sa_local_del(&up->sg); | |
14315ea8 | 960 | |
1bf16443 | 961 | /* if entry was created because of activity we need to deref it */ |
962 | if (PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) | |
963 | { | |
964 | pim_upstream_fhr_kat_expiry(up); | |
965 | if (PIM_DEBUG_TRACE) | |
8bfb8b67 | 966 | zlog_debug ("kat expired on %s; remove stream reference", up->sg_str); |
1bf16443 | 967 | PIM_UPSTREAM_FLAG_UNSET_SRC_STREAM(up->flags); |
968 | pim_upstream_del(up, __PRETTY_FUNCTION__); | |
969 | } | |
14315ea8 | 970 | |
1bf16443 | 971 | return 0; |
f14248dd DS |
972 | } |
973 | ||
f14248dd DS |
974 | void |
975 | pim_upstream_keep_alive_timer_start (struct pim_upstream *up, | |
976 | uint32_t time) | |
977 | { | |
1bf16443 | 978 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) { |
979 | if (PIM_DEBUG_TRACE) | |
8bfb8b67 | 980 | zlog_debug ("kat start on %s with no stream reference", up->sg_str); |
1bf16443 | 981 | } |
00d2f9e4 | 982 | THREAD_OFF (up->t_ka_timer); |
f14248dd DS |
983 | THREAD_TIMER_ON (master, |
984 | up->t_ka_timer, | |
985 | pim_upstream_keep_alive_timer, | |
986 | up, time); | |
1bf16443 | 987 | |
988 | /* any time keepalive is started against a SG we will have to | |
989 | * re-evaluate our active source database */ | |
990 | pim_msdp_sa_local_update(up); | |
991 | } | |
992 | ||
993 | /* MSDP on RP needs to know if a source is registerable to this RP */ | |
994 | static int | |
995 | pim_upstream_msdp_reg_timer(struct thread *t) | |
996 | { | |
997 | struct pim_upstream *up; | |
998 | ||
999 | up = THREAD_ARG(t); | |
1000 | up->t_msdp_reg_timer = NULL; | |
1001 | ||
1002 | /* source is no longer active - pull the SA from MSDP's cache */ | |
1003 | pim_msdp_sa_local_del(&up->sg); | |
1004 | return 1; | |
1005 | } | |
1006 | void | |
1007 | pim_upstream_msdp_reg_timer_start(struct pim_upstream *up) | |
1008 | { | |
1009 | THREAD_OFF(up->t_msdp_reg_timer); | |
1010 | THREAD_TIMER_ON(master, up->t_msdp_reg_timer, | |
1011 | pim_upstream_msdp_reg_timer, up, PIM_MSDP_REG_RXED_PERIOD); | |
1012 | ||
1013 | pim_msdp_sa_local_update(up); | |
f14248dd | 1014 | } |
cb40b272 DS |
1015 | |
1016 | /* | |
1017 | * 4.2.1 Last-Hop Switchover to the SPT | |
1018 | * | |
1019 | * In Sparse-Mode PIM, last-hop routers join the shared tree towards the | |
1020 | * RP. Once traffic from sources to joined groups arrives at a last-hop | |
1021 | * router, it has the option of switching to receive the traffic on a | |
1022 | * shortest path tree (SPT). | |
1023 | * | |
1024 | * The decision for a router to switch to the SPT is controlled as | |
1025 | * follows: | |
1026 | * | |
1027 | * void | |
1028 | * CheckSwitchToSpt(S,G) { | |
1029 | * if ( ( pim_include(*,G) (-) pim_exclude(S,G) | |
1030 | * (+) pim_include(S,G) != NULL ) | |
1031 | * AND SwitchToSptDesired(S,G) ) { | |
1032 | * # Note: Restarting the KAT will result in the SPT switch | |
1033 | * set KeepaliveTimer(S,G) to Keepalive_Period | |
1034 | * } | |
1035 | * } | |
1036 | * | |
1037 | * SwitchToSptDesired(S,G) is a policy function that is implementation | |
1038 | * defined. An "infinite threshold" policy can be implemented by making | |
1039 | * SwitchToSptDesired(S,G) return false all the time. A "switch on | |
1040 | * first packet" policy can be implemented by making | |
1041 | * SwitchToSptDesired(S,G) return true once a single packet has been | |
1042 | * received for the source and group. | |
1043 | */ | |
1044 | int | |
4ed0af70 | 1045 | pim_upstream_switch_to_spt_desired (struct prefix_sg *sg) |
cb40b272 | 1046 | { |
4ed0af70 | 1047 | if (I_am_RP (sg->grp)) |
a3b58b4a DS |
1048 | return 1; |
1049 | ||
cb40b272 DS |
1050 | return 0; |
1051 | } | |
d7259eac | 1052 | |
80d9c3a0 DS |
1053 | int |
1054 | pim_upstream_is_sg_rpt (struct pim_upstream *up) | |
1055 | { | |
f21597f0 DS |
1056 | struct listnode *chnode; |
1057 | struct pim_ifchannel *ch; | |
1058 | ||
1059 | for (ALL_LIST_ELEMENTS_RO(pim_ifchannel_list, chnode, ch)) | |
1060 | { | |
1061 | if ((ch->upstream == up) && | |
1062 | (PIM_IF_FLAG_TEST_S_G_RPT(ch->flags))) | |
1063 | return 1; | |
1064 | } | |
e43b8697 | 1065 | |
80d9c3a0 DS |
1066 | return 0; |
1067 | } | |
3a66b17b DS |
1068 | /* |
1069 | * After receiving a packet set SPTbit: | |
1070 | * void | |
1071 | * Update_SPTbit(S,G,iif) { | |
1072 | * if ( iif == RPF_interface(S) | |
1073 | * AND JoinDesired(S,G) == TRUE | |
1074 | * AND ( DirectlyConnected(S) == TRUE | |
1075 | * OR RPF_interface(S) != RPF_interface(RP(G)) | |
1076 | * OR inherited_olist(S,G,rpt) == NULL | |
1077 | * OR ( ( RPF'(S,G) == RPF'(*,G) ) AND | |
1078 | * ( RPF'(S,G) != NULL ) ) | |
1079 | * OR ( I_Am_Assert_Loser(S,G,iif) ) { | |
1080 | * Set SPTbit(S,G) to TRUE | |
1081 | * } | |
1082 | * } | |
1083 | */ | |
1084 | void | |
1085 | pim_upstream_set_sptbit (struct pim_upstream *up, struct interface *incoming) | |
1086 | { | |
1087 | struct pim_rpf *grpf = NULL; | |
1088 | ||
1089 | // iif == RPF_interfvace(S) | |
1090 | if (up->rpf.source_nexthop.interface != incoming) | |
1091 | { | |
1092 | if (PIM_DEBUG_TRACE) | |
1093 | zlog_debug ("%s: Incoming Interface: %s is different than RPF_interface(S) %s", | |
1094 | __PRETTY_FUNCTION__, incoming->name, up->rpf.source_nexthop.interface->name); | |
1095 | return; | |
1096 | } | |
1097 | ||
1098 | // AND JoinDesired(S,G) == TRUE | |
1099 | // FIXME | |
1100 | ||
1101 | // DirectlyConnected(S) == TRUE | |
1102 | if (pim_if_connected_to_source (up->rpf.source_nexthop.interface, up->sg.src)) | |
1103 | { | |
1104 | if (PIM_DEBUG_TRACE) | |
1105 | zlog_debug ("%s: %s is directly connected to the source", __PRETTY_FUNCTION__, | |
8bfb8b67 | 1106 | up->sg_str); |
3a66b17b DS |
1107 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
1108 | return; | |
1109 | } | |
1110 | ||
1111 | // OR RPF_interface(S) != RPF_interface(RP(G)) | |
1112 | grpf = RP(up->sg.grp); | |
1113 | if (!grpf || up->rpf.source_nexthop.interface != grpf->source_nexthop.interface) | |
1114 | { | |
1115 | if (PIM_DEBUG_TRACE) | |
1116 | zlog_debug ("%s: %s RPF_interface(S) != RPF_interface(RP(G))", | |
8bfb8b67 | 1117 | __PRETTY_FUNCTION__, up->sg_str); |
3a66b17b DS |
1118 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
1119 | return; | |
1120 | } | |
1121 | ||
1122 | // OR inherited_olist(S,G,rpt) == NULL | |
1123 | if (pim_upstream_is_sg_rpt(up) && pim_upstream_empty_inherited_olist(up)) | |
1124 | { | |
1125 | if (PIM_DEBUG_TRACE) | |
1126 | zlog_debug ("%s: %s OR inherited_olist(S,G,rpt) == NULL", __PRETTY_FUNCTION__, | |
8bfb8b67 | 1127 | up->sg_str); |
3a66b17b DS |
1128 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
1129 | return; | |
1130 | } | |
1131 | ||
1132 | // OR ( ( RPF'(S,G) == RPF'(*,G) ) AND | |
1133 | // ( RPF'(S,G) != NULL ) ) | |
1134 | if (up->parent && pim_rpf_is_same (&up->rpf, &up->parent->rpf)) | |
1135 | { | |
1136 | if (PIM_DEBUG_TRACE) | |
1137 | zlog_debug ("%s: %s RPF'(S,G) is the same as RPF'(*,G)", __PRETTY_FUNCTION__, | |
8bfb8b67 | 1138 | up->sg_str); |
3a66b17b DS |
1139 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
1140 | return; | |
1141 | } | |
1142 | ||
1143 | return; | |
1144 | } | |
80d9c3a0 | 1145 | |
d7259eac | 1146 | const char * |
c9802954 | 1147 | pim_upstream_state2str (enum pim_upstream_state join_state) |
d7259eac | 1148 | { |
c9802954 | 1149 | switch (join_state) |
d7259eac DS |
1150 | { |
1151 | case PIM_UPSTREAM_NOTJOINED: | |
e775c0a4 | 1152 | return "NotJoined"; |
d7259eac DS |
1153 | break; |
1154 | case PIM_UPSTREAM_JOINED: | |
e775c0a4 | 1155 | return "Joined"; |
d7259eac DS |
1156 | break; |
1157 | case PIM_UPSTREAM_JOIN_PENDING: | |
e775c0a4 | 1158 | return "JoinPending"; |
d7259eac DS |
1159 | break; |
1160 | case PIM_UPSTREAM_PRUNE: | |
1161 | return "Prune"; | |
1162 | break; | |
1163 | } | |
e775c0a4 | 1164 | return "Unknown"; |
d7259eac | 1165 | } |
627ed2a3 DS |
1166 | |
1167 | static int | |
1168 | pim_upstream_register_stop_timer (struct thread *t) | |
1169 | { | |
4df01a4e | 1170 | struct pim_interface *pim_ifp; |
627ed2a3 DS |
1171 | struct pim_upstream *up; |
1172 | struct pim_rpf *rpg; | |
1173 | struct ip ip_hdr; | |
627ed2a3 DS |
1174 | up = THREAD_ARG (t); |
1175 | ||
1176 | up->t_rs_timer = NULL; | |
1177 | ||
1178 | if (PIM_DEBUG_TRACE) | |
1179 | { | |
d5ed8a9c | 1180 | zlog_debug ("%s: (S,G)=%s upstream register stop timer %s", |
8bfb8b67 | 1181 | __PRETTY_FUNCTION__, up->sg_str, |
c9802954 | 1182 | pim_upstream_state2str(up->join_state)); |
627ed2a3 DS |
1183 | } |
1184 | ||
1185 | switch (up->join_state) | |
1186 | { | |
1187 | case PIM_UPSTREAM_JOIN_PENDING: | |
1188 | up->join_state = PIM_UPSTREAM_JOINED; | |
bb027ee8 DS |
1189 | pim_channel_add_oif (up->channel_oil, pim_regiface, PIM_OIF_FLAG_PROTO_PIM); |
1190 | break; | |
1191 | case PIM_UPSTREAM_JOINED: | |
627ed2a3 DS |
1192 | break; |
1193 | case PIM_UPSTREAM_PRUNE: | |
4df01a4e | 1194 | pim_ifp = up->rpf.source_nexthop.interface->info; |
7ef66046 DS |
1195 | if (!pim_ifp) |
1196 | { | |
1197 | if (PIM_DEBUG_TRACE) | |
1198 | zlog_debug ("%s: Interface: %s is not configured for pim", | |
1199 | __PRETTY_FUNCTION__, up->rpf.source_nexthop.interface->name); | |
1200 | return 0; | |
1201 | } | |
627ed2a3 DS |
1202 | up->join_state = PIM_UPSTREAM_JOIN_PENDING; |
1203 | pim_upstream_start_register_stop_timer (up, 1); | |
1204 | ||
70e7fda8 DS |
1205 | if (((up->channel_oil->cc.lastused/100) > PIM_KEEPALIVE_PERIOD) && |
1206 | (I_am_RP (up->sg.grp))) | |
1207 | { | |
1208 | if (PIM_DEBUG_TRACE) | |
1209 | zlog_debug ("%s: Stop sending the register, because I am the RP and we haven't seen a packet in a while", __PRETTY_FUNCTION__); | |
1210 | return 0; | |
1211 | } | |
4ed0af70 | 1212 | rpg = RP (up->sg.grp); |
627ed2a3 DS |
1213 | memset (&ip_hdr, 0, sizeof (struct ip)); |
1214 | ip_hdr.ip_p = PIM_IP_PROTO_PIM; | |
1215 | ip_hdr.ip_hl = 5; | |
1216 | ip_hdr.ip_v = 4; | |
4ed0af70 DS |
1217 | ip_hdr.ip_src = up->sg.src; |
1218 | ip_hdr.ip_dst = up->sg.grp; | |
dc686f82 | 1219 | ip_hdr.ip_len = htons (20); |
627ed2a3 | 1220 | // checksum is broken |
4df01a4e | 1221 | pim_register_send ((uint8_t *)&ip_hdr, sizeof (struct ip), |
0e3b3d5d | 1222 | pim_ifp->primary_address, rpg, 1, up); |
627ed2a3 DS |
1223 | break; |
1224 | default: | |
1225 | break; | |
1226 | } | |
1227 | ||
1228 | return 0; | |
1229 | } | |
1230 | ||
1231 | void | |
1232 | pim_upstream_start_register_stop_timer (struct pim_upstream *up, int null_register) | |
1233 | { | |
1234 | uint32_t time; | |
1235 | ||
1236 | if (up->t_rs_timer) | |
1237 | { | |
1238 | THREAD_TIMER_OFF (up->t_rs_timer); | |
1239 | up->t_rs_timer = NULL; | |
1240 | } | |
1241 | ||
1242 | if (!null_register) | |
1243 | { | |
1244 | uint32_t lower = (0.5 * PIM_REGISTER_SUPPRESSION_PERIOD); | |
1245 | uint32_t upper = (1.5 * PIM_REGISTER_SUPPRESSION_PERIOD); | |
1246 | time = lower + (random () % (upper - lower + 1)) - PIM_REGISTER_PROBE_PERIOD; | |
1247 | } | |
1248 | else | |
1249 | time = PIM_REGISTER_PROBE_PERIOD; | |
1250 | ||
1251 | if (PIM_DEBUG_TRACE) | |
1252 | { | |
05e451f8 | 1253 | zlog_debug ("%s: (S,G)=%s Starting upstream register stop timer %d", |
8bfb8b67 | 1254 | __PRETTY_FUNCTION__, up->sg_str, time); |
627ed2a3 DS |
1255 | } |
1256 | THREAD_TIMER_ON (master, up->t_rs_timer, | |
1257 | pim_upstream_register_stop_timer, | |
1258 | up, time); | |
1259 | } | |
4fdc8f36 | 1260 | |
4fdc8f36 | 1261 | int |
b5183fd1 | 1262 | pim_upstream_inherited_olist_decide (struct pim_upstream *up) |
4fdc8f36 | 1263 | { |
219e0013 | 1264 | struct pim_interface *pim_ifp; |
219e0013 DS |
1265 | struct listnode *chnextnode; |
1266 | struct pim_ifchannel *ch; | |
1267 | struct listnode *chnode; | |
219e0013 DS |
1268 | int output_intf = 0; |
1269 | ||
3667b0bc | 1270 | pim_ifp = up->rpf.source_nexthop.interface->info; |
da55afba | 1271 | if (pim_ifp && !up->channel_oil) |
3667b0bc | 1272 | up->channel_oil = pim_channel_oil_add (&up->sg, pim_ifp->mroute_vif_index); |
219e0013 | 1273 | |
ea4a71fc | 1274 | for (ALL_LIST_ELEMENTS (pim_ifchannel_list, chnode, chnextnode, ch)) |
219e0013 | 1275 | { |
ea4a71fc | 1276 | pim_ifp = ch->interface->info; |
7a3ddda5 DS |
1277 | if (!pim_ifp) |
1278 | continue; | |
219e0013 | 1279 | |
ea4a71fc | 1280 | if (pim_upstream_evaluate_join_desired_interface (up, ch)) |
7a3ddda5 | 1281 | { |
781a1745 DS |
1282 | int flag = PIM_OIF_FLAG_PROTO_PIM; |
1283 | ||
1284 | if (ch->sg.src.s_addr == INADDR_ANY && ch->upstream != up) | |
1285 | flag = PIM_OIF_FLAG_PROTO_STAR; | |
1286 | pim_channel_add_oif (up->channel_oil, ch->interface, flag); | |
ea4a71fc | 1287 | output_intf++; |
219e0013 DS |
1288 | } |
1289 | } | |
1290 | ||
b5183fd1 DS |
1291 | return output_intf; |
1292 | } | |
1293 | ||
1294 | /* | |
1295 | * For a given upstream, determine the inherited_olist | |
1296 | * and apply it. | |
1297 | * | |
1298 | * inherited_olist(S,G,rpt) = | |
1299 | * ( joins(*,*,RP(G)) (+) joins(*,G) (-) prunes(S,G,rpt) ) | |
1300 | * (+) ( pim_include(*,G) (-) pim_exclude(S,G)) | |
1301 | * (-) ( lost_assert(*,G) (+) lost_assert(S,G,rpt) ) | |
1302 | * | |
1303 | * inherited_olist(S,G) = | |
1304 | * inherited_olist(S,G,rpt) (+) | |
1305 | * joins(S,G) (+) pim_include(S,G) (-) lost_assert(S,G) | |
1306 | * | |
1307 | * return 1 if there are any output interfaces | |
1308 | * return 0 if there are not any output interfaces | |
1309 | */ | |
1310 | int | |
1311 | pim_upstream_inherited_olist (struct pim_upstream *up) | |
1312 | { | |
1313 | int output_intf = pim_upstream_inherited_olist_decide (up); | |
1314 | ||
483eef9d DS |
1315 | /* |
1316 | * If we have output_intf switch state to Join and work like normal | |
1317 | * If we don't have an output_intf that means we are probably a | |
1318 | * switch on a stick so turn on forwarding to just accept the | |
1319 | * incoming packets so we don't bother the other stuff! | |
1320 | */ | |
1321 | if (output_intf) | |
1322 | pim_upstream_switch (up, PIM_UPSTREAM_JOINED); | |
1323 | else | |
1324 | forward_on (up); | |
219e0013 DS |
1325 | |
1326 | return output_intf; | |
4fdc8f36 | 1327 | } |
d3dd1804 | 1328 | |
80d9c3a0 DS |
1329 | int |
1330 | pim_upstream_empty_inherited_olist (struct pim_upstream *up) | |
1331 | { | |
ce0ddb4e | 1332 | return pim_channel_oil_empty (up->channel_oil); |
80d9c3a0 DS |
1333 | } |
1334 | ||
d3dd1804 DS |
1335 | /* |
1336 | * When we have a new neighbor, | |
1337 | * find upstreams that don't have their rpf_addr | |
1338 | * set and see if the new neighbor allows | |
1339 | * the join to be sent | |
1340 | */ | |
1341 | void | |
1342 | pim_upstream_find_new_rpf (void) | |
1343 | { | |
1344 | struct listnode *up_node; | |
1345 | struct listnode *up_nextnode; | |
1346 | struct pim_upstream *up; | |
1347 | ||
1348 | /* | |
0f588989 DS |
1349 | * Scan all (S,G) upstreams searching for RPF'(S,G)=neigh_addr |
1350 | */ | |
1351 | for (ALL_LIST_ELEMENTS(pim_upstream_list, up_node, up_nextnode, up)) | |
d3dd1804 | 1352 | { |
63c59d0c | 1353 | if (pim_rpf_addr_is_inaddr_any(&up->rpf)) |
d3dd1804 | 1354 | { |
3197cb1e | 1355 | if (PIM_DEBUG_TRACE) |
d3dd1804 | 1356 | zlog_debug ("Upstream %s without a path to send join, checking", |
8bfb8b67 | 1357 | up->sg_str); |
d3dd1804 DS |
1358 | pim_rpf_update (up, NULL); |
1359 | } | |
1360 | } | |
1361 | } | |
0f588989 | 1362 | |
0f588989 DS |
1363 | static unsigned int |
1364 | pim_upstream_hash_key (void *arg) | |
1365 | { | |
1366 | struct pim_upstream *up = (struct pim_upstream *)arg; | |
1367 | ||
1368 | return jhash_2words (up->sg.src.s_addr, up->sg.grp.s_addr, 0); | |
1369 | } | |
1370 | ||
1371 | void pim_upstream_terminate (void) | |
1372 | { | |
1373 | if (pim_upstream_list) | |
693c9259 | 1374 | list_delete (pim_upstream_list); |
0f588989 DS |
1375 | pim_upstream_list = NULL; |
1376 | ||
1377 | if (pim_upstream_hash) | |
1378 | hash_free (pim_upstream_hash); | |
693c9259 | 1379 | pim_upstream_hash = NULL; |
0f588989 DS |
1380 | } |
1381 | ||
1382 | static int | |
1383 | pim_upstream_equal (const void *arg1, const void *arg2) | |
1384 | { | |
1385 | const struct pim_upstream *up1 = (const struct pim_upstream *)arg1; | |
1386 | const struct pim_upstream *up2 = (const struct pim_upstream *)arg2; | |
1387 | ||
1388 | if ((up1->sg.grp.s_addr == up2->sg.grp.s_addr) && | |
1389 | (up1->sg.src.s_addr == up2->sg.src.s_addr)) | |
1390 | return 1; | |
1391 | ||
1392 | return 0; | |
1393 | } | |
1394 | ||
1bf16443 | 1395 | /* rfc4601:section-4.2:"Data Packet Forwarding Rules" defines |
1396 | * the cases where kat has to be restarted on rxing traffic - | |
1397 | * | |
1398 | * if( DirectlyConnected(S) == TRUE AND iif == RPF_interface(S) ) { | |
1399 | * set KeepaliveTimer(S,G) to Keepalive_Period | |
1400 | * # Note: a register state transition or UpstreamJPState(S,G) | |
1401 | * # transition may happen as a result of restarting | |
1402 | * # KeepaliveTimer, and must be dealt with here. | |
1403 | * } | |
1404 | * if( iif == RPF_interface(S) AND UpstreamJPState(S,G) == Joined AND | |
1405 | * inherited_olist(S,G) != NULL ) { | |
1406 | * set KeepaliveTimer(S,G) to Keepalive_Period | |
1407 | * } | |
1408 | */ | |
1409 | static bool pim_upstream_kat_start_ok(struct pim_upstream *up) | |
1410 | { | |
1411 | /* "iif == RPF_interface(S)" check has to be done by the kernel or hw | |
1412 | * so we will skip that here */ | |
1413 | if (pim_if_connected_to_source(up->rpf.source_nexthop.interface, | |
1414 | up->sg.src)) { | |
1415 | return true; | |
1416 | } | |
1417 | ||
1418 | if ((up->join_state == PIM_UPSTREAM_JOINED) && | |
1419 | !pim_upstream_empty_inherited_olist(up)) { | |
1420 | /* XXX: I have added this RP check just for 3.2 and it's a digression from | |
1421 | * what rfc-4601 says. Till now we were only running KAT on FHR and RP and | |
1422 | * there is some angst around making the change to run it all routers that | |
1423 | * maintain the (S, G) state. This is tracked via CM-13601 and MUST be | |
1424 | * removed to handle spt turn-arounds correctly in a 3-tier clos */ | |
1425 | if (I_am_RP (up->sg.grp)) | |
1426 | return true; | |
1427 | } | |
1428 | ||
1429 | return false; | |
1430 | } | |
1431 | ||
9c5e4d62 DS |
1432 | /* |
1433 | * Code to check and see if we've received packets on a S,G mroute | |
1434 | * and if so to set the SPT bit appropriately | |
1435 | */ | |
1436 | static void | |
1437 | pim_upstream_sg_running (void *arg) | |
1438 | { | |
1439 | struct pim_upstream *up = (struct pim_upstream *)arg; | |
e43b8697 DS |
1440 | |
1441 | // No packet can have arrived here if this is the case | |
1442 | if (!up->channel_oil || !up->channel_oil->installed) | |
1443 | { | |
1444 | if (PIM_DEBUG_TRACE) | |
1445 | zlog_debug ("%s: %s is not installed in mroute", | |
8bfb8b67 | 1446 | __PRETTY_FUNCTION__, up->sg_str); |
e43b8697 DS |
1447 | return; |
1448 | } | |
1449 | ||
bfdf4096 DS |
1450 | /* |
1451 | * This is a bit of a hack | |
1452 | * We've noted that we should rescan but | |
1453 | * we've missed the window for doing so in | |
1454 | * pim_zebra.c for some reason. I am | |
1455 | * only doing this at this point in time | |
1456 | * to get us up and working for the moment | |
1457 | */ | |
1458 | if (up->channel_oil->oil_inherited_rescan) | |
1459 | { | |
1460 | if (PIM_DEBUG_TRACE) | |
1461 | zlog_debug ("%s: Handling unscanned inherited_olist for %s", __PRETTY_FUNCTION__, up->sg_str); | |
1462 | pim_upstream_inherited_olist_decide (up); | |
1463 | up->channel_oil->oil_inherited_rescan = 0; | |
1464 | } | |
e43b8697 DS |
1465 | pim_mroute_update_counters (up->channel_oil); |
1466 | ||
1467 | // Have we seen packets? | |
1bf16443 | 1468 | if ((up->channel_oil->cc.oldpktcnt >= up->channel_oil->cc.pktcnt) && |
e43b8697 DS |
1469 | (up->channel_oil->cc.lastused/100 > 30)) |
1470 | { | |
1471 | if (PIM_DEBUG_TRACE) | |
1472 | { | |
eeedae06 DS |
1473 | zlog_debug ("%s: %s old packet count is equal or lastused is greater than 30, (%ld,%ld,%lld)", |
1474 | __PRETTY_FUNCTION__, up->sg_str, | |
1475 | up->channel_oil->cc.oldpktcnt, | |
1476 | up->channel_oil->cc.pktcnt, | |
1477 | up->channel_oil->cc.lastused/100); | |
e43b8697 DS |
1478 | } |
1479 | return; | |
1480 | } | |
1481 | ||
1bf16443 | 1482 | if (pim_upstream_kat_start_ok(up)) { |
1483 | /* Add a source reference to the stream if | |
1484 | * one doesn't already exist */ | |
1485 | if (!PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) | |
1486 | { | |
1487 | if (PIM_DEBUG_TRACE) | |
8bfb8b67 DS |
1488 | zlog_debug ("source reference created on kat restart %s", up->sg_str); |
1489 | ||
1bf16443 | 1490 | pim_upstream_ref(up, PIM_UPSTREAM_FLAG_MASK_SRC_STREAM); |
1491 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); | |
1492 | pim_upstream_fhr_kat_start(up); | |
1493 | } | |
1494 | pim_upstream_keep_alive_timer_start(up, qpim_keep_alive_time); | |
1495 | } | |
1496 | ||
1497 | if (up->sptbit != PIM_UPSTREAM_SPTBIT_TRUE) | |
1498 | { | |
1499 | pim_upstream_set_sptbit(up, up->rpf.source_nexthop.interface); | |
1500 | } | |
e43b8697 | 1501 | return; |
9c5e4d62 DS |
1502 | } |
1503 | ||
040d86ad DS |
1504 | void |
1505 | pim_upstream_init (void) | |
0f588989 | 1506 | { |
9c5e4d62 DS |
1507 | pim_upstream_sg_wheel = wheel_init (master, 31000, 100, |
1508 | pim_upstream_hash_key, | |
1509 | pim_upstream_sg_running); | |
0f588989 DS |
1510 | pim_upstream_hash = hash_create_size (8192, pim_upstream_hash_key, |
1511 | pim_upstream_equal); | |
1512 | ||
1513 | pim_upstream_list = list_new (); | |
1514 | pim_upstream_list->del = (void (*)(void *)) pim_upstream_free; | |
03417ccd | 1515 | pim_upstream_list->cmp = pim_upstream_compare; |
0f588989 DS |
1516 | |
1517 | } |