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Commit | Line | Data |
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12e41d03 | 1 | /* |
896014f4 DL |
2 | * PIM for Quagga |
3 | * Copyright (C) 2008 Everton da Silva Marques | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; see the file COPYING; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
12e41d03 DL |
19 | |
20 | #include <zebra.h> | |
21 | ||
22 | #include "log.h" | |
744d91b3 | 23 | #include "if.h" |
12e41d03 DL |
24 | |
25 | #include "pimd.h" | |
26 | #include "pim_pim.h" | |
27 | #include "pim_str.h" | |
28 | #include "pim_tlv.h" | |
29 | #include "pim_util.h" | |
30 | #include "pim_hello.h" | |
31 | #include "pim_iface.h" | |
32 | #include "pim_neighbor.h" | |
33 | #include "pim_upstream.h" | |
34 | ||
d62a17ae | 35 | static void on_trace(const char *label, struct interface *ifp, |
36 | struct in_addr src) | |
12e41d03 | 37 | { |
d62a17ae | 38 | if (PIM_DEBUG_PIM_TRACE) { |
39 | char src_str[INET_ADDRSTRLEN]; | |
40 | pim_inet4_dump("<src?>", src, src_str, sizeof(src_str)); | |
41 | zlog_debug("%s: from %s on %s", label, src_str, ifp->name); | |
42 | } | |
12e41d03 DL |
43 | } |
44 | ||
45 | static void tlv_trace_bool(const char *label, const char *tlv_name, | |
46 | const char *ifname, struct in_addr src_addr, | |
47 | int isset, int value) | |
48 | { | |
d62a17ae | 49 | if (isset) { |
50 | char src_str[INET_ADDRSTRLEN]; | |
51 | pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str)); | |
52 | zlog_debug( | |
53 | "%s: PIM hello option from %s on interface %s: %s=%d", | |
54 | label, src_str, ifname, tlv_name, value); | |
55 | } | |
12e41d03 DL |
56 | } |
57 | ||
58 | static void tlv_trace_uint16(const char *label, const char *tlv_name, | |
59 | const char *ifname, struct in_addr src_addr, | |
60 | int isset, uint16_t value) | |
61 | { | |
d62a17ae | 62 | if (isset) { |
63 | char src_str[INET_ADDRSTRLEN]; | |
64 | pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str)); | |
65 | zlog_debug( | |
66 | "%s: PIM hello option from %s on interface %s: %s=%u", | |
67 | label, src_str, ifname, tlv_name, value); | |
68 | } | |
12e41d03 DL |
69 | } |
70 | ||
71 | static void tlv_trace_uint32(const char *label, const char *tlv_name, | |
72 | const char *ifname, struct in_addr src_addr, | |
73 | int isset, uint32_t value) | |
74 | { | |
d62a17ae | 75 | if (isset) { |
76 | char src_str[INET_ADDRSTRLEN]; | |
77 | pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str)); | |
78 | zlog_debug( | |
79 | "%s: PIM hello option from %s on interface %s: %s=%u", | |
80 | label, src_str, ifname, tlv_name, value); | |
81 | } | |
12e41d03 DL |
82 | } |
83 | ||
84 | static void tlv_trace_uint32_hex(const char *label, const char *tlv_name, | |
85 | const char *ifname, struct in_addr src_addr, | |
86 | int isset, uint32_t value) | |
87 | { | |
d62a17ae | 88 | if (isset) { |
89 | char src_str[INET_ADDRSTRLEN]; | |
90 | pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str)); | |
91 | zlog_debug( | |
92 | "%s: PIM hello option from %s on interface %s: %s=%08x", | |
93 | label, src_str, ifname, tlv_name, value); | |
94 | } | |
12e41d03 DL |
95 | } |
96 | ||
97 | #if 0 | |
98 | static void tlv_trace(const char *label, const char *tlv_name, | |
99 | const char *ifname, struct in_addr src_addr, | |
100 | int isset) | |
101 | { | |
102 | if (isset) { | |
eaa54bdb | 103 | char src_str[INET_ADDRSTRLEN]; |
12e41d03 DL |
104 | pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str)); |
105 | zlog_debug("%s: PIM hello option from %s on interface %s: %s", | |
106 | label, | |
107 | src_str, ifname, | |
108 | tlv_name); | |
109 | } | |
110 | } | |
111 | #endif | |
112 | ||
113 | static void tlv_trace_list(const char *label, const char *tlv_name, | |
114 | const char *ifname, struct in_addr src_addr, | |
115 | int isset, struct list *addr_list) | |
116 | { | |
d62a17ae | 117 | if (isset) { |
118 | char src_str[INET_ADDRSTRLEN]; | |
119 | pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str)); | |
120 | zlog_debug( | |
121 | "%s: PIM hello option from %s on interface %s: %s size=%d list=%p", | |
122 | label, src_str, ifname, tlv_name, | |
123 | addr_list ? ((int)listcount(addr_list)) : -1, | |
124 | (void *)addr_list); | |
125 | } | |
12e41d03 DL |
126 | } |
127 | ||
996c9314 LB |
128 | #define FREE_ADDR_LIST \ |
129 | if (hello_option_addr_list) { \ | |
130 | list_delete_and_null(&hello_option_addr_list); \ | |
d62a17ae | 131 | } |
12e41d03 | 132 | |
d62a17ae | 133 | #define FREE_ADDR_LIST_THEN_RETURN(code) \ |
134 | { \ | |
135 | FREE_ADDR_LIST \ | |
136 | return (code); \ | |
137 | } | |
12e41d03 | 138 | |
d62a17ae | 139 | int pim_hello_recv(struct interface *ifp, struct in_addr src_addr, |
12e41d03 DL |
140 | uint8_t *tlv_buf, int tlv_buf_size) |
141 | { | |
d62a17ae | 142 | struct pim_interface *pim_ifp; |
143 | struct pim_neighbor *neigh; | |
144 | uint8_t *tlv_curr; | |
145 | uint8_t *tlv_pastend; | |
146 | pim_hello_options hello_options = | |
147 | 0; /* bit array recording options found */ | |
148 | uint16_t hello_option_holdtime = 0; | |
149 | uint16_t hello_option_propagation_delay = 0; | |
150 | uint16_t hello_option_override_interval = 0; | |
151 | uint32_t hello_option_dr_priority = 0; | |
152 | uint32_t hello_option_generation_id = 0; | |
153 | struct list *hello_option_addr_list = 0; | |
154 | ||
155 | if (PIM_DEBUG_PIM_HELLO) | |
156 | on_trace(__PRETTY_FUNCTION__, ifp, src_addr); | |
157 | ||
158 | pim_ifp = ifp->info; | |
159 | zassert(pim_ifp); | |
160 | ||
161 | ++pim_ifp->pim_ifstat_hello_recv; | |
162 | ||
163 | /* | |
164 | Parse PIM hello TLVs | |
165 | */ | |
166 | zassert(tlv_buf_size >= 0); | |
167 | tlv_curr = tlv_buf; | |
168 | tlv_pastend = tlv_buf + tlv_buf_size; | |
169 | ||
170 | while (tlv_curr < tlv_pastend) { | |
171 | uint16_t option_type; | |
172 | uint16_t option_len; | |
173 | int remain = tlv_pastend - tlv_curr; | |
174 | ||
175 | if (remain < PIM_TLV_MIN_SIZE) { | |
176 | if (PIM_DEBUG_PIM_HELLO) { | |
177 | char src_str[INET_ADDRSTRLEN]; | |
178 | pim_inet4_dump("<src?>", src_addr, src_str, | |
179 | sizeof(src_str)); | |
180 | zlog_debug( | |
181 | "%s: short PIM hello TLV size=%d < min=%d from %s on interface %s", | |
182 | __PRETTY_FUNCTION__, remain, | |
183 | PIM_TLV_MIN_SIZE, src_str, ifp->name); | |
184 | } | |
185 | FREE_ADDR_LIST_THEN_RETURN(-1); | |
186 | } | |
187 | ||
188 | option_type = PIM_TLV_GET_TYPE(tlv_curr); | |
189 | tlv_curr += PIM_TLV_TYPE_SIZE; | |
190 | option_len = PIM_TLV_GET_LENGTH(tlv_curr); | |
191 | tlv_curr += PIM_TLV_LENGTH_SIZE; | |
192 | ||
193 | if ((tlv_curr + option_len) > tlv_pastend) { | |
194 | if (PIM_DEBUG_PIM_HELLO) { | |
195 | char src_str[INET_ADDRSTRLEN]; | |
196 | pim_inet4_dump("<src?>", src_addr, src_str, | |
197 | sizeof(src_str)); | |
198 | zlog_debug( | |
199 | "%s: long PIM hello TLV type=%d length=%d > left=%td from %s on interface %s", | |
200 | __PRETTY_FUNCTION__, option_type, | |
201 | option_len, tlv_pastend - tlv_curr, | |
202 | src_str, ifp->name); | |
203 | } | |
204 | FREE_ADDR_LIST_THEN_RETURN(-2); | |
205 | } | |
206 | ||
207 | if (PIM_DEBUG_PIM_HELLO) { | |
208 | char src_str[INET_ADDRSTRLEN]; | |
209 | pim_inet4_dump("<src?>", src_addr, src_str, | |
210 | sizeof(src_str)); | |
211 | zlog_debug( | |
212 | "%s: parse left_size=%d: PIM hello TLV type=%d length=%d from %s on %s", | |
213 | __PRETTY_FUNCTION__, remain, option_type, | |
214 | option_len, src_str, ifp->name); | |
215 | } | |
216 | ||
217 | switch (option_type) { | |
218 | case PIM_MSG_OPTION_TYPE_HOLDTIME: | |
219 | if (pim_tlv_parse_holdtime(ifp->name, src_addr, | |
220 | &hello_options, | |
221 | &hello_option_holdtime, | |
222 | option_len, tlv_curr)) { | |
223 | FREE_ADDR_LIST_THEN_RETURN(-3); | |
224 | } | |
225 | break; | |
226 | case PIM_MSG_OPTION_TYPE_LAN_PRUNE_DELAY: | |
227 | if (pim_tlv_parse_lan_prune_delay( | |
228 | ifp->name, src_addr, &hello_options, | |
229 | &hello_option_propagation_delay, | |
230 | &hello_option_override_interval, option_len, | |
12e41d03 | 231 | tlv_curr)) { |
d62a17ae | 232 | FREE_ADDR_LIST_THEN_RETURN(-4); |
233 | } | |
234 | break; | |
235 | case PIM_MSG_OPTION_TYPE_DR_PRIORITY: | |
236 | if (pim_tlv_parse_dr_priority(ifp->name, src_addr, | |
237 | &hello_options, | |
238 | &hello_option_dr_priority, | |
239 | option_len, tlv_curr)) { | |
240 | FREE_ADDR_LIST_THEN_RETURN(-5); | |
241 | } | |
242 | break; | |
243 | case PIM_MSG_OPTION_TYPE_GENERATION_ID: | |
244 | if (pim_tlv_parse_generation_id( | |
245 | ifp->name, src_addr, &hello_options, | |
246 | &hello_option_generation_id, option_len, | |
247 | tlv_curr)) { | |
248 | FREE_ADDR_LIST_THEN_RETURN(-6); | |
249 | } | |
250 | break; | |
251 | case PIM_MSG_OPTION_TYPE_ADDRESS_LIST: | |
252 | if (pim_tlv_parse_addr_list(ifp->name, src_addr, | |
253 | &hello_options, | |
254 | &hello_option_addr_list, | |
255 | option_len, tlv_curr)) { | |
256 | return -7; | |
257 | } | |
258 | break; | |
259 | case PIM_MSG_OPTION_TYPE_DM_STATE_REFRESH: | |
260 | if (PIM_DEBUG_PIM_HELLO) { | |
261 | char src_str[INET_ADDRSTRLEN]; | |
262 | pim_inet4_dump("<src?>", src_addr, src_str, | |
263 | sizeof(src_str)); | |
264 | zlog_debug( | |
265 | "%s: ignoring PIM hello dense-mode state refresh TLV option type=%d length=%d from %s on interface %s", | |
266 | __PRETTY_FUNCTION__, option_type, | |
267 | option_len, src_str, ifp->name); | |
268 | } | |
269 | break; | |
270 | default: | |
271 | if (PIM_DEBUG_PIM_HELLO) { | |
272 | char src_str[INET_ADDRSTRLEN]; | |
273 | pim_inet4_dump("<src?>", src_addr, src_str, | |
274 | sizeof(src_str)); | |
275 | zlog_debug( | |
276 | "%s: ignoring unknown PIM hello TLV type=%d length=%d from %s on interface %s", | |
277 | __PRETTY_FUNCTION__, option_type, | |
278 | option_len, src_str, ifp->name); | |
279 | } | |
280 | } | |
281 | ||
282 | tlv_curr += option_len; | |
283 | } | |
12e41d03 | 284 | |
d62a17ae | 285 | /* |
286 | Check received PIM hello options | |
287 | */ | |
12e41d03 | 288 | |
d62a17ae | 289 | if (PIM_DEBUG_PIM_HELLO) { |
290 | tlv_trace_uint16(__PRETTY_FUNCTION__, "holdtime", ifp->name, | |
291 | src_addr, | |
292 | PIM_OPTION_IS_SET(hello_options, | |
293 | PIM_OPTION_MASK_HOLDTIME), | |
294 | hello_option_holdtime); | |
295 | tlv_trace_uint16( | |
296 | __PRETTY_FUNCTION__, "propagation_delay", ifp->name, | |
297 | src_addr, | |
298 | PIM_OPTION_IS_SET(hello_options, | |
299 | PIM_OPTION_MASK_LAN_PRUNE_DELAY), | |
300 | hello_option_propagation_delay); | |
301 | tlv_trace_uint16( | |
302 | __PRETTY_FUNCTION__, "override_interval", ifp->name, | |
303 | src_addr, | |
304 | PIM_OPTION_IS_SET(hello_options, | |
305 | PIM_OPTION_MASK_LAN_PRUNE_DELAY), | |
306 | hello_option_override_interval); | |
307 | tlv_trace_bool( | |
308 | __PRETTY_FUNCTION__, "can_disable_join_suppression", | |
309 | ifp->name, src_addr, | |
310 | PIM_OPTION_IS_SET(hello_options, | |
311 | PIM_OPTION_MASK_LAN_PRUNE_DELAY), | |
312 | PIM_OPTION_IS_SET( | |
313 | hello_options, | |
314 | PIM_OPTION_MASK_CAN_DISABLE_JOIN_SUPPRESSION)); | |
315 | tlv_trace_uint32(__PRETTY_FUNCTION__, "dr_priority", ifp->name, | |
316 | src_addr, | |
317 | PIM_OPTION_IS_SET(hello_options, | |
318 | PIM_OPTION_MASK_DR_PRIORITY), | |
319 | hello_option_dr_priority); | |
320 | tlv_trace_uint32_hex( | |
321 | __PRETTY_FUNCTION__, "generation_id", ifp->name, | |
322 | src_addr, | |
323 | PIM_OPTION_IS_SET(hello_options, | |
324 | PIM_OPTION_MASK_GENERATION_ID), | |
325 | hello_option_generation_id); | |
326 | tlv_trace_list(__PRETTY_FUNCTION__, "address_list", ifp->name, | |
327 | src_addr, | |
328 | PIM_OPTION_IS_SET(hello_options, | |
329 | PIM_OPTION_MASK_ADDRESS_LIST), | |
330 | hello_option_addr_list); | |
331 | } | |
12e41d03 | 332 | |
d62a17ae | 333 | if (!PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_HOLDTIME)) { |
334 | if (PIM_DEBUG_PIM_HELLO) { | |
335 | char src_str[INET_ADDRSTRLEN]; | |
336 | pim_inet4_dump("<src?>", src_addr, src_str, | |
337 | sizeof(src_str)); | |
338 | zlog_debug( | |
339 | "%s: PIM hello missing holdtime from %s on interface %s", | |
340 | __PRETTY_FUNCTION__, src_str, ifp->name); | |
341 | } | |
342 | } | |
12e41d03 | 343 | |
d62a17ae | 344 | /* |
345 | New neighbor? | |
346 | */ | |
347 | ||
348 | neigh = pim_neighbor_find(ifp, src_addr); | |
349 | if (!neigh) { | |
350 | /* Add as new neighbor */ | |
351 | ||
352 | neigh = pim_neighbor_add( | |
353 | ifp, src_addr, hello_options, hello_option_holdtime, | |
354 | hello_option_propagation_delay, | |
355 | hello_option_override_interval, | |
356 | hello_option_dr_priority, hello_option_generation_id, | |
357 | hello_option_addr_list, PIM_NEIGHBOR_SEND_DELAY); | |
358 | if (!neigh) { | |
359 | if (PIM_DEBUG_PIM_HELLO) { | |
360 | char src_str[INET_ADDRSTRLEN]; | |
361 | pim_inet4_dump("<src?>", src_addr, src_str, | |
362 | sizeof(src_str)); | |
363 | zlog_warn( | |
364 | "%s: failure creating PIM neighbor %s on interface %s", | |
365 | __PRETTY_FUNCTION__, src_str, | |
366 | ifp->name); | |
367 | } | |
368 | FREE_ADDR_LIST_THEN_RETURN(-8); | |
369 | } | |
370 | ||
371 | /* actual addr list has been saved under neighbor */ | |
372 | return 0; | |
aea6cb94 | 373 | } |
d62a17ae | 374 | |
375 | /* | |
376 | Received generation ID ? | |
377 | */ | |
378 | ||
379 | if (PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_GENERATION_ID)) { | |
380 | /* GenID mismatch ? */ | |
381 | if (!PIM_OPTION_IS_SET(neigh->hello_options, | |
382 | PIM_OPTION_MASK_GENERATION_ID) | |
383 | || (hello_option_generation_id != neigh->generation_id)) { | |
384 | /* GenID mismatch, then replace neighbor */ | |
385 | ||
386 | if (PIM_DEBUG_PIM_HELLO) { | |
387 | char src_str[INET_ADDRSTRLEN]; | |
388 | pim_inet4_dump("<src?>", src_addr, src_str, | |
389 | sizeof(src_str)); | |
390 | zlog_debug( | |
391 | "%s: GenId mismatch new=%08x old=%08x: replacing neighbor %s on %s", | |
392 | __PRETTY_FUNCTION__, | |
393 | hello_option_generation_id, | |
394 | neigh->generation_id, src_str, | |
395 | ifp->name); | |
396 | } | |
397 | ||
9b29ea95 DS |
398 | pim_upstream_rpf_genid_changed(pim_ifp->pim, |
399 | neigh->source_addr); | |
d62a17ae | 400 | |
401 | pim_neighbor_delete(ifp, neigh, "GenID mismatch"); | |
402 | neigh = pim_neighbor_add(ifp, src_addr, hello_options, | |
403 | hello_option_holdtime, | |
404 | hello_option_propagation_delay, | |
405 | hello_option_override_interval, | |
406 | hello_option_dr_priority, | |
407 | hello_option_generation_id, | |
408 | hello_option_addr_list, | |
409 | PIM_NEIGHBOR_SEND_NOW); | |
410 | if (!neigh) { | |
411 | if (PIM_DEBUG_PIM_HELLO) { | |
412 | char src_str[INET_ADDRSTRLEN]; | |
413 | pim_inet4_dump("<src?>", src_addr, | |
414 | src_str, | |
415 | sizeof(src_str)); | |
416 | zlog_debug( | |
417 | "%s: failure re-creating PIM neighbor %s on interface %s", | |
418 | __PRETTY_FUNCTION__, src_str, | |
419 | ifp->name); | |
420 | } | |
421 | FREE_ADDR_LIST_THEN_RETURN(-9); | |
422 | } | |
423 | /* actual addr list is saved under neighbor */ | |
424 | return 0; | |
425 | ||
426 | } /* GenId mismatch: replace neighbor */ | |
427 | ||
428 | } /* GenId received */ | |
429 | ||
430 | /* | |
431 | Update existing neighbor | |
432 | */ | |
433 | ||
434 | pim_neighbor_update(neigh, hello_options, hello_option_holdtime, | |
435 | hello_option_dr_priority, hello_option_addr_list); | |
436 | /* actual addr list is saved under neighbor */ | |
437 | return 0; | |
12e41d03 DL |
438 | } |
439 | ||
d62a17ae | 440 | int pim_hello_build_tlv(struct interface *ifp, uint8_t *tlv_buf, |
441 | int tlv_buf_size, uint16_t holdtime, | |
442 | uint32_t dr_priority, uint32_t generation_id, | |
443 | uint16_t propagation_delay, uint16_t override_interval, | |
dba78609 | 444 | int can_disable_join_suppression) |
12e41d03 | 445 | { |
d62a17ae | 446 | uint8_t *curr = tlv_buf; |
447 | uint8_t *pastend = tlv_buf + tlv_buf_size; | |
448 | uint8_t *tmp; | |
88a3f5e1 DS |
449 | struct pim_interface *pim_ifp = ifp->info; |
450 | struct pim_instance *pim = pim_ifp->pim; | |
d62a17ae | 451 | |
452 | /* | |
453 | * Append options | |
454 | */ | |
455 | ||
456 | /* Holdtime */ | |
457 | curr = pim_tlv_append_uint16(curr, pastend, | |
458 | PIM_MSG_OPTION_TYPE_HOLDTIME, holdtime); | |
459 | if (!curr) { | |
460 | if (PIM_DEBUG_PIM_HELLO) { | |
461 | zlog_debug( | |
462 | "%s: could not set PIM hello Holdtime option for interface %s", | |
463 | __PRETTY_FUNCTION__, ifp->name); | |
464 | } | |
465 | return -1; | |
466 | } | |
12e41d03 | 467 | |
d62a17ae | 468 | /* LAN Prune Delay */ |
469 | tmp = pim_tlv_append_2uint16(curr, pastend, | |
470 | PIM_MSG_OPTION_TYPE_LAN_PRUNE_DELAY, | |
471 | propagation_delay, override_interval); | |
472 | if (!tmp) { | |
473 | if (PIM_DEBUG_PIM_HELLO) { | |
474 | zlog_debug( | |
475 | "%s: could not set PIM LAN Prune Delay option for interface %s", | |
476 | __PRETTY_FUNCTION__, ifp->name); | |
477 | } | |
478 | return -1; | |
479 | } | |
480 | if (can_disable_join_suppression) { | |
481 | *((uint8_t *)(curr) + 4) |= 0x80; /* enable T bit */ | |
482 | } | |
483 | curr = tmp; | |
484 | ||
485 | /* DR Priority */ | |
486 | curr = pim_tlv_append_uint32( | |
487 | curr, pastend, PIM_MSG_OPTION_TYPE_DR_PRIORITY, dr_priority); | |
488 | if (!curr) { | |
489 | if (PIM_DEBUG_PIM_HELLO) { | |
490 | zlog_debug( | |
491 | "%s: could not set PIM hello DR Priority option for interface %s", | |
492 | __PRETTY_FUNCTION__, ifp->name); | |
493 | } | |
494 | return -2; | |
495 | } | |
12e41d03 | 496 | |
d62a17ae | 497 | /* Generation ID */ |
498 | curr = pim_tlv_append_uint32(curr, pastend, | |
499 | PIM_MSG_OPTION_TYPE_GENERATION_ID, | |
500 | generation_id); | |
501 | if (!curr) { | |
502 | if (PIM_DEBUG_PIM_HELLO) { | |
503 | zlog_debug( | |
504 | "%s: could not set PIM hello Generation ID option for interface %s", | |
505 | __PRETTY_FUNCTION__, ifp->name); | |
506 | } | |
507 | return -3; | |
508 | } | |
12e41d03 | 509 | |
d62a17ae | 510 | /* Secondary Address List */ |
511 | if (ifp->connected->count) { | |
512 | curr = pim_tlv_append_addrlist_ucast(curr, pastend, | |
513 | ifp->connected, AF_INET); | |
514 | if (!curr) { | |
515 | if (PIM_DEBUG_PIM_HELLO) { | |
516 | zlog_debug( | |
517 | "%s: could not set PIM hello v4 Secondary Address List option for interface %s", | |
518 | __PRETTY_FUNCTION__, ifp->name); | |
519 | } | |
520 | return -4; | |
521 | } | |
88a3f5e1 | 522 | if (pim->send_v6_secondary) { |
d62a17ae | 523 | curr = pim_tlv_append_addrlist_ucast( |
524 | curr, pastend, ifp->connected, AF_INET6); | |
525 | if (!curr) { | |
526 | if (PIM_DEBUG_PIM_HELLO) { | |
527 | zlog_debug( | |
528 | "%s: could not sent PIM hello v6 secondary Address List option for interface %s", | |
529 | __PRETTY_FUNCTION__, ifp->name); | |
530 | } | |
531 | return -4; | |
532 | } | |
533 | } | |
534 | } | |
12e41d03 | 535 | |
d62a17ae | 536 | return curr - tlv_buf; |
12e41d03 DL |
537 | } |
538 | ||
539 | /* | |
540 | RFC 4601: 4.3.1. Sending Hello Messages | |
541 | ||
542 | Thus, if a router needs to send a Join/Prune or Assert message on an | |
543 | interface on which it has not yet sent a Hello message with the | |
544 | currently configured IP address, then it MUST immediately send the | |
545 | relevant Hello message without waiting for the Hello Timer to | |
546 | expire, followed by the Join/Prune or Assert message. | |
547 | */ | |
548 | void pim_hello_require(struct interface *ifp) | |
549 | { | |
d62a17ae | 550 | struct pim_interface *pim_ifp; |
12e41d03 | 551 | |
d62a17ae | 552 | zassert(ifp); |
12e41d03 | 553 | |
d62a17ae | 554 | pim_ifp = ifp->info; |
12e41d03 | 555 | |
d62a17ae | 556 | zassert(pim_ifp); |
12e41d03 | 557 | |
d62a17ae | 558 | if (pim_ifp->pim_ifstat_hello_sent) |
559 | return; | |
12e41d03 | 560 | |
d62a17ae | 561 | pim_hello_restart_now(ifp); /* Send hello and restart timer */ |
12e41d03 | 562 | } |