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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 | #include "log.h" | |
22 | #include "privs.h" | |
744d91b3 | 23 | #include "if.h" |
065bee4b | 24 | #include "prefix.h" |
dfe43e25 DW |
25 | #include "vty.h" |
26 | #include "plist.h" | |
fe232c19 | 27 | #include "sockopt.h" |
12e41d03 DL |
28 | |
29 | #include "pimd.h" | |
8e38a2cf | 30 | #include "pim_rpf.h" |
12e41d03 | 31 | #include "pim_mroute.h" |
37653d4f | 32 | #include "pim_oil.h" |
12e41d03 DL |
33 | #include "pim_str.h" |
34 | #include "pim_time.h" | |
35 | #include "pim_iface.h" | |
36 | #include "pim_macro.h" | |
c8ae3ce8 | 37 | #include "pim_rp.h" |
59471fb8 | 38 | #include "pim_oil.h" |
998af219 | 39 | #include "pim_register.h" |
56638739 | 40 | #include "pim_ifchannel.h" |
e3be0432 | 41 | #include "pim_zlookup.h" |
15a5dafe | 42 | #include "pim_ssm.h" |
12e41d03 | 43 | |
8ea5d944 | 44 | static void mroute_read_on(struct pim_instance *pim); |
12e41d03 | 45 | |
cdbfaec5 | 46 | static int pim_mroute_set(struct pim_instance *pim, int enable) |
12e41d03 | 47 | { |
d62a17ae | 48 | int err; |
f507c196 | 49 | int opt; |
d62a17ae | 50 | socklen_t opt_len = sizeof(opt); |
d62a17ae | 51 | long flags; |
52 | ||
cdbfaec5 DS |
53 | /* |
54 | * We need to create the VRF table for the pim mroute_socket | |
55 | */ | |
56 | if (pim->vrf_id != VRF_DEFAULT) { | |
f507c196 DS |
57 | if (pimd_privs.change(ZPRIVS_RAISE)) |
58 | zlog_err( | |
59 | "pim_mroute_socket_enable: could not raise privs, %s", | |
60 | safe_strerror(errno)); | |
61 | ||
cdbfaec5 DS |
62 | opt = pim->vrf_id; |
63 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, MRT_TABLE, | |
64 | &opt, opt_len); | |
65 | if (err) { | |
66 | zlog_warn( | |
67 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP, MRT_TABLE=%d): errno=%d: %s", | |
68 | __FILE__, __PRETTY_FUNCTION__, | |
69 | pim->mroute_socket, opt, errno, | |
70 | safe_strerror(errno)); | |
71 | return -1; | |
72 | } | |
f507c196 DS |
73 | |
74 | if (pimd_privs.change(ZPRIVS_LOWER)) | |
75 | zlog_err( | |
76 | "pim_mroute_socket_enable: could not lower privs, %s", | |
77 | safe_strerror(errno)); | |
78 | } | |
79 | ||
80 | opt = enable ? MRT_INIT : MRT_DONE; | |
81 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, opt, &opt, opt_len); | |
82 | if (err) { | |
83 | zlog_warn( | |
84 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,%s=%d): errno=%d: %s", | |
85 | __FILE__, __PRETTY_FUNCTION__, pim->mroute_socket, | |
86 | enable ? "MRT_INIT" : "MRT_DONE", opt, errno, | |
87 | safe_strerror(errno)); | |
88 | return -1; | |
cdbfaec5 DS |
89 | } |
90 | ||
91 | setsockopt_so_recvbuf(pim->mroute_socket, 1024 * 1024 * 8); | |
d62a17ae | 92 | |
cdbfaec5 | 93 | flags = fcntl(pim->mroute_socket, F_GETFL, 0); |
d62a17ae | 94 | if (flags < 0) { |
cdbfaec5 DS |
95 | zlog_warn("Could not get flags on socket fd:%d %d %s", |
96 | pim->mroute_socket, errno, safe_strerror(errno)); | |
97 | close(pim->mroute_socket); | |
d62a17ae | 98 | return -1; |
99 | } | |
cdbfaec5 DS |
100 | if (fcntl(pim->mroute_socket, F_SETFL, flags | O_NONBLOCK)) { |
101 | zlog_warn("Could not set O_NONBLOCK on socket fd:%d %d %s", | |
102 | pim->mroute_socket, errno, safe_strerror(errno)); | |
103 | close(pim->mroute_socket); | |
d62a17ae | 104 | return -1; |
105 | } | |
106 | ||
107 | if (enable) { | |
77b7d90b | 108 | #if defined linux |
d62a17ae | 109 | int upcalls = IGMPMSG_WRVIFWHOLE; |
110 | opt = MRT_PIM; | |
111 | ||
cdbfaec5 | 112 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, opt, &upcalls, |
d62a17ae | 113 | sizeof(upcalls)); |
114 | if (err) { | |
115 | zlog_warn( | |
116 | "Failure to register for VIFWHOLE and WRONGVIF upcalls %d %s", | |
117 | errno, safe_strerror(errno)); | |
118 | return -1; | |
119 | } | |
77b7d90b | 120 | #else |
d62a17ae | 121 | zlog_warn( |
122 | "PIM-SM will not work properly on this platform, until the ability to receive the WRVIFWHOLE upcall"); | |
77b7d90b | 123 | #endif |
d62a17ae | 124 | } |
125 | ||
126 | return 0; | |
12e41d03 DL |
127 | } |
128 | ||
08e1fe76 | 129 | static const char *igmpmsgtype2str[IGMPMSG_WRVIFWHOLE + 1] = { |
d62a17ae | 130 | "<unknown_upcall?>", "NOCACHE", "WRONGVIF", "WHOLEPKT", "WRVIFWHOLE"}; |
131 | ||
132 | static int pim_mroute_msg_nocache(int fd, struct interface *ifp, | |
133 | const struct igmpmsg *msg) | |
12e41d03 | 134 | { |
d62a17ae | 135 | struct pim_interface *pim_ifp = ifp->info; |
136 | struct pim_upstream *up; | |
137 | struct pim_rpf *rpg; | |
138 | struct prefix_sg sg; | |
139 | ||
140 | rpg = RP(msg->im_dst); | |
141 | /* | |
142 | * If the incoming interface is unknown OR | |
143 | * the Interface type is SSM we don't need to | |
144 | * do anything here | |
145 | */ | |
146 | if ((pim_rpf_addr_is_inaddr_none(rpg)) || (!pim_ifp) | |
147 | || (!(PIM_I_am_DR(pim_ifp)))) { | |
148 | if (PIM_DEBUG_MROUTE_DETAIL) | |
149 | zlog_debug( | |
150 | "%s: Interface is not configured correctly to handle incoming packet: Could be !DR, !pim_ifp, !SM, !RP", | |
151 | __PRETTY_FUNCTION__); | |
152 | return 0; | |
153 | } | |
04b40f02 | 154 | |
d62a17ae | 155 | /* |
156 | * If we've received a multicast packet that isn't connected to | |
157 | * us | |
158 | */ | |
159 | if (!pim_if_connected_to_source(ifp, msg->im_src)) { | |
160 | if (PIM_DEBUG_MROUTE_DETAIL) | |
161 | zlog_debug( | |
162 | "%s: Received incoming packet that doesn't originate on our seg", | |
163 | __PRETTY_FUNCTION__); | |
164 | return 0; | |
165 | } | |
065bee4b | 166 | |
d62a17ae | 167 | memset(&sg, 0, sizeof(struct prefix_sg)); |
168 | sg.src = msg->im_src; | |
169 | sg.grp = msg->im_dst; | |
170 | ||
171 | up = pim_upstream_find_or_add(&sg, ifp, PIM_UPSTREAM_FLAG_MASK_FHR, | |
172 | __PRETTY_FUNCTION__); | |
173 | if (!up) { | |
174 | if (PIM_DEBUG_MROUTE) { | |
175 | zlog_debug( | |
176 | "%s: Failure to add upstream information for %s", | |
177 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
178 | } | |
179 | return 0; | |
180 | } | |
c29a5806 | 181 | |
d62a17ae | 182 | /* |
183 | * I moved this debug till after the actual add because | |
184 | * I want to take advantage of the up->sg_str being filled in. | |
185 | */ | |
186 | if (PIM_DEBUG_MROUTE) { | |
187 | zlog_debug("%s: Adding a Route %s for WHOLEPKT consumption", | |
188 | __PRETTY_FUNCTION__, up->sg_str); | |
189 | } | |
8bfb8b67 | 190 | |
d62a17ae | 191 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); |
192 | pim_upstream_keep_alive_timer_start(up, qpim_keep_alive_time); | |
193 | ||
194 | up->channel_oil->cc.pktcnt++; | |
195 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); | |
196 | // resolve mfcc_parent prior to mroute_add in channel_add_oif | |
197 | if (up->channel_oil->oil.mfcc_parent >= MAXVIFS) { | |
198 | int vif_index = 0; | |
199 | vif_index = pim_if_find_vifindex_by_ifindex( | |
200 | up->rpf.source_nexthop.interface->ifindex); | |
201 | up->channel_oil->oil.mfcc_parent = vif_index; | |
202 | } | |
203 | pim_register_join(up); | |
59471fb8 | 204 | |
d62a17ae | 205 | return 0; |
e355e30f | 206 | } |
12e41d03 | 207 | |
d62a17ae | 208 | static int pim_mroute_msg_wholepkt(int fd, struct interface *ifp, |
209 | const char *buf) | |
e355e30f | 210 | { |
d62a17ae | 211 | struct pim_interface *pim_ifp; |
212 | struct prefix_sg sg; | |
213 | struct pim_rpf *rpg; | |
214 | const struct ip *ip_hdr; | |
215 | struct pim_upstream *up; | |
216 | ||
217 | ip_hdr = (const struct ip *)buf; | |
218 | ||
219 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
220 | sg.src = ip_hdr->ip_src; | |
221 | sg.grp = ip_hdr->ip_dst; | |
222 | ||
223 | up = pim_upstream_find(&sg); | |
224 | if (!up) { | |
225 | struct prefix_sg star = sg; | |
226 | star.src.s_addr = INADDR_ANY; | |
227 | ||
228 | up = pim_upstream_find(&star); | |
229 | ||
230 | if (up && PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(up->flags)) { | |
231 | up = pim_upstream_add(&sg, ifp, | |
232 | PIM_UPSTREAM_FLAG_MASK_SRC_LHR, | |
233 | __PRETTY_FUNCTION__); | |
234 | if (!up) { | |
235 | if (PIM_DEBUG_MROUTE) | |
236 | zlog_debug( | |
237 | "%s: Unable to create upstream information for %s", | |
238 | __PRETTY_FUNCTION__, | |
239 | pim_str_sg_dump(&sg)); | |
240 | return 0; | |
241 | } | |
242 | pim_upstream_keep_alive_timer_start( | |
243 | up, qpim_keep_alive_time); | |
244 | pim_upstream_inherited_olist(up); | |
245 | pim_upstream_switch(up, PIM_UPSTREAM_JOINED); | |
246 | ||
247 | if (PIM_DEBUG_MROUTE) | |
248 | zlog_debug("%s: Creating %s upstream on LHR", | |
249 | __PRETTY_FUNCTION__, up->sg_str); | |
250 | return 0; | |
251 | } | |
252 | if (PIM_DEBUG_MROUTE_DETAIL) { | |
253 | zlog_debug( | |
254 | "%s: Unable to find upstream channel WHOLEPKT%s", | |
255 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
256 | } | |
257 | return 0; | |
258 | } | |
59471fb8 | 259 | |
d62a17ae | 260 | pim_ifp = up->rpf.source_nexthop.interface->info; |
998af219 | 261 | |
d62a17ae | 262 | rpg = RP(sg.grp); |
c8ae3ce8 | 263 | |
d62a17ae | 264 | if ((pim_rpf_addr_is_inaddr_none(rpg)) || (!pim_ifp) |
265 | || (!(PIM_I_am_DR(pim_ifp)))) { | |
266 | if (PIM_DEBUG_MROUTE) { | |
267 | zlog_debug("%s: Failed Check send packet", | |
268 | __PRETTY_FUNCTION__); | |
269 | } | |
270 | return 0; | |
271 | } | |
84366c7e | 272 | |
d62a17ae | 273 | /* |
274 | * If we've received a register suppress | |
275 | */ | |
276 | if (!up->t_rs_timer) { | |
277 | if (pim_is_grp_ssm(sg.grp)) { | |
278 | if (PIM_DEBUG_PIM_REG) | |
279 | zlog_debug( | |
280 | "%s register forward skipped as group is SSM", | |
281 | pim_str_sg_dump(&sg)); | |
282 | return 0; | |
283 | } | |
284 | pim_register_send((uint8_t *)buf + sizeof(struct ip), | |
285 | ntohs(ip_hdr->ip_len) - sizeof(struct ip), | |
286 | pim_ifp->primary_address, rpg, 0, up); | |
287 | } | |
288 | return 0; | |
e355e30f | 289 | } |
12e41d03 | 290 | |
d62a17ae | 291 | static int pim_mroute_msg_wrongvif(int fd, struct interface *ifp, |
292 | const struct igmpmsg *msg) | |
e355e30f | 293 | { |
d62a17ae | 294 | struct pim_ifchannel *ch; |
295 | struct pim_interface *pim_ifp; | |
296 | struct prefix_sg sg; | |
297 | ||
298 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
299 | sg.src = msg->im_src; | |
300 | sg.grp = msg->im_dst; | |
301 | ||
302 | /* | |
303 | Send Assert(S,G) on iif as response to WRONGVIF kernel upcall. | |
304 | ||
305 | RFC 4601 4.8.2. PIM-SSM-Only Routers | |
306 | ||
307 | iif is the incoming interface of the packet. | |
308 | if (iif is in inherited_olist(S,G)) { | |
309 | send Assert(S,G) on iif | |
310 | } | |
311 | */ | |
312 | ||
313 | if (!ifp) { | |
314 | if (PIM_DEBUG_MROUTE) | |
315 | zlog_debug( | |
316 | "%s: WRONGVIF (S,G)=%s could not find input interface for input_vif_index=%d", | |
317 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
318 | msg->im_vif); | |
319 | return -1; | |
320 | } | |
12e41d03 | 321 | |
d62a17ae | 322 | pim_ifp = ifp->info; |
323 | if (!pim_ifp) { | |
324 | if (PIM_DEBUG_MROUTE) | |
325 | zlog_debug( | |
326 | "%s: WRONGVIF (S,G)=%s multicast not enabled on interface %s", | |
327 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
328 | ifp->name); | |
329 | return -2; | |
330 | } | |
c29a5806 | 331 | |
d62a17ae | 332 | ch = pim_ifchannel_find(ifp, &sg); |
333 | if (!ch) { | |
334 | struct prefix_sg star_g = sg; | |
335 | if (PIM_DEBUG_MROUTE) | |
336 | zlog_debug( | |
337 | "%s: WRONGVIF (S,G)=%s could not find channel on interface %s", | |
338 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
339 | ifp->name); | |
340 | ||
341 | star_g.src.s_addr = INADDR_ANY; | |
342 | ch = pim_ifchannel_find(ifp, &star_g); | |
343 | if (!ch) { | |
344 | if (PIM_DEBUG_MROUTE) | |
345 | zlog_debug( | |
346 | "%s: WRONGVIF (*,G)=%s could not find channel on interface %s", | |
347 | __PRETTY_FUNCTION__, | |
348 | pim_str_sg_dump(&star_g), ifp->name); | |
349 | return -3; | |
350 | } | |
351 | } | |
12e41d03 | 352 | |
d62a17ae | 353 | /* |
354 | RFC 4601: 4.6.1. (S,G) Assert Message State Machine | |
355 | ||
356 | Transitions from NoInfo State | |
357 | ||
358 | An (S,G) data packet arrives on interface I, AND | |
359 | CouldAssert(S,G,I)==TRUE An (S,G) data packet arrived on an | |
360 | downstream interface that is in our (S,G) outgoing interface | |
361 | list. We optimistically assume that we will be the assert | |
362 | winner for this (S,G), and so we transition to the "I am Assert | |
363 | Winner" state and perform Actions A1 (below), which will | |
364 | initiate the assert negotiation for (S,G). | |
365 | */ | |
366 | ||
367 | if (ch->ifassert_state != PIM_IFASSERT_NOINFO) { | |
368 | if (PIM_DEBUG_MROUTE) { | |
369 | zlog_debug( | |
370 | "%s: WRONGVIF (S,G)=%s channel is not on Assert NoInfo state for interface %s", | |
371 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
372 | } | |
373 | return -4; | |
374 | } | |
e355e30f | 375 | |
d62a17ae | 376 | if (!PIM_IF_FLAG_TEST_COULD_ASSERT(ch->flags)) { |
377 | if (PIM_DEBUG_MROUTE) { | |
378 | zlog_debug( | |
379 | "%s: WRONGVIF (S,G)=%s interface %s is not downstream for channel", | |
380 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
381 | } | |
382 | return -5; | |
383 | } | |
384 | ||
385 | if (assert_action_a1(ch)) { | |
386 | if (PIM_DEBUG_MROUTE) { | |
387 | zlog_debug( | |
388 | "%s: WRONGVIF (S,G)=%s assert_action_a1 failure on interface %s", | |
389 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
390 | } | |
391 | return -6; | |
392 | } | |
e355e30f | 393 | |
d62a17ae | 394 | return 0; |
e355e30f DS |
395 | } |
396 | ||
d62a17ae | 397 | static int pim_mroute_msg_wrvifwhole(int fd, struct interface *ifp, |
398 | const char *buf) | |
08e1fe76 | 399 | { |
d62a17ae | 400 | const struct ip *ip_hdr = (const struct ip *)buf; |
401 | struct pim_interface *pim_ifp; | |
402 | struct pim_ifchannel *ch; | |
403 | struct pim_upstream *up; | |
404 | struct prefix_sg star_g; | |
405 | struct prefix_sg sg; | |
406 | struct channel_oil *oil; | |
407 | ||
408 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
409 | sg.src = ip_hdr->ip_src; | |
410 | sg.grp = ip_hdr->ip_dst; | |
411 | ||
412 | ch = pim_ifchannel_find(ifp, &sg); | |
413 | if (ch) { | |
414 | if (PIM_DEBUG_MROUTE) | |
415 | zlog_debug( | |
416 | "WRVIFWHOLE (S,G)=%s found ifchannel on interface %s", | |
417 | ch->sg_str, ifp->name); | |
418 | return -1; | |
419 | } | |
b7ddd2ec | 420 | |
d62a17ae | 421 | star_g = sg; |
422 | star_g.src.s_addr = INADDR_ANY; | |
b7ddd2ec | 423 | #if 0 |
0490c22d DS |
424 | ch = pim_ifchannel_find(ifp, &star_g); |
425 | if (ch) | |
426 | { | |
427 | if (PIM_DEBUG_MROUTE) | |
428 | zlog_debug ("WRVIFWHOLE (*,G)=%s found ifchannel on interface %s", | |
429 | pim_str_sg_dump (&star_g), ifp->name); | |
430 | return -1; | |
431 | } | |
5cd11e3c | 432 | #endif |
08e1fe76 | 433 | |
d62a17ae | 434 | up = pim_upstream_find(&sg); |
435 | if (up) { | |
436 | struct pim_upstream *parent; | |
437 | struct pim_nexthop source; | |
438 | struct pim_rpf *rpf = RP(sg.grp); | |
439 | if (!rpf || !rpf->source_nexthop.interface) | |
440 | return 0; | |
441 | ||
442 | /* | |
443 | * If we have received a WRVIFWHOLE and are at this | |
444 | * point, we could be receiving the packet on the *,G | |
445 | * tree, let's check and if so we can safely drop | |
446 | * it. | |
447 | */ | |
448 | parent = pim_upstream_find(&star_g); | |
449 | if (parent && parent->rpf.source_nexthop.interface == ifp) | |
450 | return 0; | |
451 | ||
452 | pim_ifp = rpf->source_nexthop.interface->info; | |
453 | ||
454 | memset(&source, 0, sizeof(source)); | |
455 | /* | |
456 | * If we are the fhr that means we are getting a callback during | |
457 | * the pimreg period, so I believe we can ignore this packet | |
458 | */ | |
459 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) { | |
460 | // No if channel, but upstream we are at the RP. | |
461 | if (pim_nexthop_lookup(&source, up->upstream_register, | |
462 | 0) | |
463 | == 0) | |
464 | pim_register_stop_send(source.interface, &sg, | |
465 | pim_ifp->primary_address, | |
466 | up->upstream_register); | |
467 | if (!up->channel_oil) | |
468 | up->channel_oil = pim_channel_oil_add( | |
469 | &sg, pim_ifp->mroute_vif_index); | |
470 | pim_upstream_inherited_olist(up); | |
471 | if (!up->channel_oil->installed) | |
472 | pim_mroute_add(up->channel_oil, | |
473 | __PRETTY_FUNCTION__); | |
474 | pim_upstream_set_sptbit(up, ifp); | |
475 | } else { | |
476 | if (I_am_RP(up->sg.grp)) { | |
477 | if (pim_nexthop_lookup(&source, | |
478 | up->upstream_register, 0) | |
479 | == 0) | |
480 | pim_register_stop_send( | |
481 | source.interface, &sg, | |
482 | pim_ifp->primary_address, | |
483 | up->upstream_register); | |
484 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
485 | } | |
486 | pim_upstream_keep_alive_timer_start( | |
487 | up, qpim_keep_alive_time); | |
488 | pim_upstream_inherited_olist(up); | |
489 | pim_mroute_msg_wholepkt(fd, ifp, buf); | |
490 | } | |
491 | return 0; | |
492 | } | |
8e38a2cf | 493 | |
d62a17ae | 494 | pim_ifp = ifp->info; |
495 | oil = pim_channel_oil_add(&sg, pim_ifp->mroute_vif_index); | |
496 | if (!oil->installed) | |
497 | pim_mroute_add(oil, __PRETTY_FUNCTION__); | |
498 | if (pim_if_connected_to_source(ifp, sg.src)) { | |
499 | up = pim_upstream_add(&sg, ifp, PIM_UPSTREAM_FLAG_MASK_FHR, | |
500 | __PRETTY_FUNCTION__); | |
501 | if (!up) { | |
502 | if (PIM_DEBUG_MROUTE) | |
503 | zlog_debug( | |
504 | "%s: WRONGVIF%s unable to create upstream on interface", | |
505 | pim_str_sg_dump(&sg), ifp->name); | |
506 | return -2; | |
507 | } | |
508 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); | |
509 | pim_upstream_keep_alive_timer_start(up, qpim_keep_alive_time); | |
510 | up->channel_oil = oil; | |
511 | up->channel_oil->cc.pktcnt++; | |
512 | pim_register_join(up); | |
513 | pim_upstream_inherited_olist(up); | |
514 | ||
515 | // Send the packet to the RP | |
516 | pim_mroute_msg_wholepkt(fd, ifp, buf); | |
517 | } | |
08e1fe76 | 518 | |
d62a17ae | 519 | return 0; |
08e1fe76 DS |
520 | } |
521 | ||
405d6357 DS |
522 | static int pim_mroute_msg(struct pim_instance *pim, const char *buf, |
523 | int buf_size) | |
e355e30f | 524 | { |
d62a17ae | 525 | struct interface *ifp; |
526 | struct pim_interface *pim_ifp; | |
527 | const struct ip *ip_hdr; | |
528 | const struct igmpmsg *msg; | |
529 | char ip_src_str[INET_ADDRSTRLEN] = ""; | |
530 | char ip_dst_str[INET_ADDRSTRLEN] = ""; | |
531 | char src_str[INET_ADDRSTRLEN] = "<src?>"; | |
532 | char grp_str[INET_ADDRSTRLEN] = "<grp?>"; | |
533 | struct in_addr ifaddr; | |
534 | struct igmp_sock *igmp; | |
535 | ||
536 | ip_hdr = (const struct ip *)buf; | |
537 | ||
538 | if (ip_hdr->ip_p == IPPROTO_IGMP) { | |
539 | ||
540 | /* We have the IP packet but we do not know which interface this | |
541 | * packet was | |
542 | * received on. Find the interface that is on the same subnet as | |
543 | * the source | |
544 | * of the IP packet. | |
545 | */ | |
405d6357 | 546 | ifp = pim_if_lookup_address_vrf(ip_hdr->ip_src, pim->vrf_id); |
d62a17ae | 547 | |
548 | if (!ifp) { | |
549 | if (PIM_DEBUG_MROUTE_DETAIL) { | |
550 | pim_inet4_dump("<src?>", ip_hdr->ip_src, | |
551 | ip_src_str, sizeof(ip_src_str)); | |
552 | pim_inet4_dump("<dst?>", ip_hdr->ip_dst, | |
553 | ip_dst_str, sizeof(ip_dst_str)); | |
554 | ||
555 | zlog_warn( | |
556 | "%s: igmp kernel upcall could not find usable interface for %s -> %s", | |
557 | __PRETTY_FUNCTION__, ip_src_str, | |
558 | ip_dst_str); | |
559 | } | |
560 | return 0; | |
561 | } | |
562 | pim_ifp = ifp->info; | |
563 | ifaddr = pim_find_primary_addr(ifp); | |
564 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
565 | ifaddr); | |
566 | ||
567 | if (PIM_DEBUG_MROUTE) { | |
568 | pim_inet4_dump("<src?>", ip_hdr->ip_src, ip_src_str, | |
569 | sizeof(ip_src_str)); | |
570 | pim_inet4_dump("<dst?>", ip_hdr->ip_dst, ip_dst_str, | |
571 | sizeof(ip_dst_str)); | |
572 | ||
573 | zlog_warn( | |
574 | "%s: igmp kernel upcall on %s(%p) for %s -> %s", | |
575 | __PRETTY_FUNCTION__, ifp->name, igmp, | |
576 | ip_src_str, ip_dst_str); | |
577 | } | |
578 | if (igmp) | |
579 | pim_igmp_packet(igmp, (char *)buf, buf_size); | |
580 | ||
581 | } else if (ip_hdr->ip_p) { | |
582 | if (PIM_DEBUG_MROUTE_DETAIL) { | |
583 | pim_inet4_dump("<src?>", ip_hdr->ip_src, src_str, | |
584 | sizeof(src_str)); | |
585 | pim_inet4_dump("<grp?>", ip_hdr->ip_dst, grp_str, | |
586 | sizeof(grp_str)); | |
587 | zlog_debug( | |
588 | "%s: no kernel upcall proto=%d src: %s dst: %s msg_size=%d", | |
589 | __PRETTY_FUNCTION__, ip_hdr->ip_p, src_str, | |
590 | grp_str, buf_size); | |
591 | } | |
592 | ||
593 | } else { | |
594 | msg = (const struct igmpmsg *)buf; | |
595 | ||
596 | ifp = pim_if_find_by_vif_index(msg->im_vif); | |
597 | ||
598 | if (!ifp) | |
599 | return 0; | |
600 | if (PIM_DEBUG_MROUTE) { | |
601 | pim_inet4_dump("<src?>", msg->im_src, src_str, | |
602 | sizeof(src_str)); | |
603 | pim_inet4_dump("<grp?>", msg->im_dst, grp_str, | |
604 | sizeof(grp_str)); | |
605 | zlog_warn( | |
606 | "%s: pim kernel upcall %s type=%d ip_p=%d from fd=%d for (S,G)=(%s,%s) on %s vifi=%d size=%d", | |
607 | __PRETTY_FUNCTION__, | |
608 | igmpmsgtype2str[msg->im_msgtype], | |
405d6357 DS |
609 | msg->im_msgtype, ip_hdr->ip_p, |
610 | pim->mroute_socket, src_str, grp_str, ifp->name, | |
611 | msg->im_vif, buf_size); | |
d62a17ae | 612 | } |
613 | ||
614 | switch (msg->im_msgtype) { | |
615 | case IGMPMSG_WRONGVIF: | |
405d6357 DS |
616 | return pim_mroute_msg_wrongvif(pim->mroute_socket, ifp, |
617 | msg); | |
d62a17ae | 618 | break; |
619 | case IGMPMSG_NOCACHE: | |
405d6357 DS |
620 | return pim_mroute_msg_nocache(pim->mroute_socket, ifp, |
621 | msg); | |
d62a17ae | 622 | break; |
623 | case IGMPMSG_WHOLEPKT: | |
405d6357 | 624 | return pim_mroute_msg_wholepkt(pim->mroute_socket, ifp, |
d62a17ae | 625 | (const char *)msg); |
626 | break; | |
627 | case IGMPMSG_WRVIFWHOLE: | |
405d6357 DS |
628 | return pim_mroute_msg_wrvifwhole( |
629 | pim->mroute_socket, ifp, (const char *)msg); | |
d62a17ae | 630 | break; |
631 | default: | |
632 | break; | |
633 | } | |
634 | } | |
12e41d03 | 635 | |
d62a17ae | 636 | return 0; |
12e41d03 DL |
637 | } |
638 | ||
12e41d03 DL |
639 | static int mroute_read(struct thread *t) |
640 | { | |
8ea5d944 | 641 | struct pim_instance *pim; |
d62a17ae | 642 | static long long count; |
643 | char buf[10000]; | |
644 | int result = 0; | |
645 | int cont = 1; | |
d62a17ae | 646 | int rd; |
647 | ||
8ea5d944 | 648 | pim = THREAD_ARG(t); |
d62a17ae | 649 | |
650 | while (cont) { | |
8ea5d944 | 651 | rd = read(pim->mroute_socket, buf, sizeof(buf)); |
61e99c94 | 652 | if (rd <= 0) { |
d62a17ae | 653 | if (errno == EINTR) |
654 | continue; | |
655 | if (errno == EWOULDBLOCK || errno == EAGAIN) | |
656 | break; | |
657 | ||
658 | if (PIM_DEBUG_MROUTE) | |
659 | zlog_warn( | |
61e99c94 | 660 | "%s: failure reading rd=%d: fd=%d: errno=%d: %s", |
8ea5d944 DS |
661 | __PRETTY_FUNCTION__, rd, |
662 | pim->mroute_socket, errno, | |
d62a17ae | 663 | safe_strerror(errno)); |
664 | goto done; | |
665 | } | |
666 | ||
405d6357 | 667 | result = pim_mroute_msg(pim, buf, rd); |
d62a17ae | 668 | |
669 | count++; | |
670 | if (count % qpim_packet_process == 0) | |
671 | cont = 0; | |
672 | } | |
673 | /* Keep reading */ | |
674 | done: | |
8ea5d944 | 675 | mroute_read_on(pim); |
12e41d03 | 676 | |
d62a17ae | 677 | return result; |
12e41d03 DL |
678 | } |
679 | ||
8ea5d944 | 680 | static void mroute_read_on(struct pim_instance *pim) |
12e41d03 | 681 | { |
ff673f45 | 682 | thread_add_read(master, mroute_read, 0, pimg->mroute_socket, |
8ea5d944 | 683 | &pim->thread); |
12e41d03 DL |
684 | } |
685 | ||
8ea5d944 | 686 | static void mroute_read_off(struct pim_instance *pim) |
12e41d03 | 687 | { |
8ea5d944 | 688 | THREAD_OFF(pim->thread); |
12e41d03 DL |
689 | } |
690 | ||
6beed987 | 691 | int pim_mroute_socket_enable(struct pim_instance *pim) |
12e41d03 | 692 | { |
d62a17ae | 693 | int fd; |
12e41d03 | 694 | |
d62a17ae | 695 | if (pimd_privs.change(ZPRIVS_RAISE)) |
696 | zlog_err("pim_mroute_socket_enable: could not raise privs, %s", | |
697 | safe_strerror(errno)); | |
12e41d03 | 698 | |
d62a17ae | 699 | fd = socket(AF_INET, SOCK_RAW, IPPROTO_IGMP); |
12e41d03 | 700 | |
d62a17ae | 701 | if (pimd_privs.change(ZPRIVS_LOWER)) |
702 | zlog_err("pim_mroute_socket_enable: could not lower privs, %s", | |
703 | safe_strerror(errno)); | |
12e41d03 | 704 | |
d62a17ae | 705 | if (fd < 0) { |
706 | zlog_warn("Could not create mroute socket: errno=%d: %s", errno, | |
707 | safe_strerror(errno)); | |
708 | return -2; | |
709 | } | |
12e41d03 | 710 | |
cdbfaec5 DS |
711 | pim->mroute_socket = fd; |
712 | if (pim_mroute_set(pim, 1)) { | |
d62a17ae | 713 | zlog_warn( |
714 | "Could not enable mroute on socket fd=%d: errno=%d: %s", | |
715 | fd, errno, safe_strerror(errno)); | |
716 | close(fd); | |
cdbfaec5 | 717 | pim->mroute_socket = -1; |
d62a17ae | 718 | return -3; |
719 | } | |
12e41d03 | 720 | |
6beed987 | 721 | pim->mroute_socket_creation = pim_time_monotonic_sec(); |
b45cefcb | 722 | |
8ea5d944 | 723 | mroute_read_on(pim); |
12e41d03 | 724 | |
d62a17ae | 725 | return 0; |
12e41d03 DL |
726 | } |
727 | ||
6beed987 | 728 | int pim_mroute_socket_disable(struct pim_instance *pim) |
12e41d03 | 729 | { |
cdbfaec5 | 730 | if (pim_mroute_set(pim, 0)) { |
d62a17ae | 731 | zlog_warn( |
732 | "Could not disable mroute on socket fd=%d: errno=%d: %s", | |
405d6357 | 733 | pim->mroute_socket, errno, safe_strerror(errno)); |
d62a17ae | 734 | return -2; |
735 | } | |
736 | ||
6beed987 | 737 | if (close(pim->mroute_socket)) { |
d62a17ae | 738 | zlog_warn("Failure closing mroute socket: fd=%d errno=%d: %s", |
405d6357 | 739 | pim->mroute_socket, errno, safe_strerror(errno)); |
d62a17ae | 740 | return -3; |
741 | } | |
742 | ||
8ea5d944 | 743 | mroute_read_off(pim); |
6beed987 | 744 | pim->mroute_socket = -1; |
d62a17ae | 745 | |
746 | return 0; | |
12e41d03 DL |
747 | } |
748 | ||
749 | /* | |
750 | For each network interface (e.g., physical or a virtual tunnel) that | |
751 | would be used for multicast forwarding, a corresponding multicast | |
752 | interface must be added to the kernel. | |
753 | */ | |
d62a17ae | 754 | int pim_mroute_add_vif(struct interface *ifp, struct in_addr ifaddr, |
755 | unsigned char flags) | |
12e41d03 | 756 | { |
d62a17ae | 757 | struct pim_interface *pim_ifp = ifp->info; |
758 | struct vifctl vc; | |
759 | int err; | |
12e41d03 | 760 | |
d62a17ae | 761 | memset(&vc, 0, sizeof(vc)); |
762 | vc.vifc_vifi = pim_ifp->mroute_vif_index; | |
b3f2bf7c | 763 | #ifdef VIFF_USE_IFINDEX |
d62a17ae | 764 | vc.vifc_lcl_ifindex = ifp->ifindex; |
b3f2bf7c | 765 | #else |
d62a17ae | 766 | if (ifaddr.s_addr == INADDR_ANY) { |
767 | zlog_warn( | |
768 | "%s: unnumbered interfaces are not supported on this platform", | |
769 | __PRETTY_FUNCTION__); | |
770 | return -1; | |
771 | } | |
772 | memcpy(&vc.vifc_lcl_addr, &ifaddr, sizeof(vc.vifc_lcl_addr)); | |
b3f2bf7c | 773 | #endif |
d62a17ae | 774 | vc.vifc_flags = flags; |
775 | vc.vifc_threshold = PIM_MROUTE_MIN_TTL; | |
776 | vc.vifc_rate_limit = 0; | |
777 | ||
778 | #ifdef PIM_DVMRP_TUNNEL | |
779 | if (vc.vifc_flags & VIFF_TUNNEL) { | |
780 | memcpy(&vc.vifc_rmt_addr, &vif_remote_addr, | |
781 | sizeof(vc.vifc_rmt_addr)); | |
782 | } | |
12e41d03 DL |
783 | #endif |
784 | ||
ea3d967b | 785 | err = setsockopt(pim_ifp->pim->mroute_socket, IPPROTO_IP, MRT_ADD_VIF, |
d62a17ae | 786 | (void *)&vc, sizeof(vc)); |
787 | if (err) { | |
788 | char ifaddr_str[INET_ADDRSTRLEN]; | |
12e41d03 | 789 | |
d62a17ae | 790 | pim_inet4_dump("<ifaddr?>", ifaddr, ifaddr_str, |
791 | sizeof(ifaddr_str)); | |
12e41d03 | 792 | |
d62a17ae | 793 | zlog_warn( |
794 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_ADD_VIF,vif_index=%d,ifaddr=%s,flag=%d): errno=%d: %s", | |
ea3d967b DS |
795 | __FILE__, __PRETTY_FUNCTION__, |
796 | pim_ifp->pim->mroute_socket, ifp->ifindex, ifaddr_str, | |
797 | flags, errno, safe_strerror(errno)); | |
d62a17ae | 798 | return -2; |
799 | } | |
12e41d03 | 800 | |
d62a17ae | 801 | return 0; |
12e41d03 DL |
802 | } |
803 | ||
ea3d967b | 804 | int pim_mroute_del_vif(struct interface *ifp) |
12e41d03 | 805 | { |
ea3d967b | 806 | struct pim_interface *pim_ifp = ifp->info; |
d62a17ae | 807 | struct vifctl vc; |
808 | int err; | |
809 | ||
ea3d967b | 810 | if (PIM_DEBUG_MROUTE) |
d62a17ae | 811 | zlog_debug("%s %s: Del Vif %d (%s) ", __FILE__, |
ea3d967b DS |
812 | __PRETTY_FUNCTION__, pim_ifp->mroute_vif_index, |
813 | ifp->name); | |
12e41d03 | 814 | |
d62a17ae | 815 | memset(&vc, 0, sizeof(vc)); |
ea3d967b | 816 | vc.vifc_vifi = pim_ifp->mroute_vif_index; |
d62a17ae | 817 | |
ea3d967b | 818 | err = setsockopt(pim_ifp->pim->mroute_socket, IPPROTO_IP, MRT_DEL_VIF, |
d62a17ae | 819 | (void *)&vc, sizeof(vc)); |
820 | if (err) { | |
821 | zlog_warn( | |
822 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_DEL_VIF,vif_index=%d): errno=%d: %s", | |
ea3d967b DS |
823 | __FILE__, __PRETTY_FUNCTION__, |
824 | pim_ifp->pim->mroute_socket, pim_ifp->mroute_vif_index, | |
825 | errno, safe_strerror(errno)); | |
d62a17ae | 826 | return -2; |
827 | } | |
12e41d03 | 828 | |
d62a17ae | 829 | return 0; |
12e41d03 DL |
830 | } |
831 | ||
6a78764e | 832 | int pim_mroute_add(struct channel_oil *c_oil, const char *name) |
12e41d03 | 833 | { |
d62a17ae | 834 | int err; |
835 | int orig = 0; | |
836 | int orig_iif_vif = 0; | |
837 | ||
ff673f45 DS |
838 | pimg->mroute_add_last = pim_time_monotonic_sec(); |
839 | ++pimg->mroute_add_events; | |
d62a17ae | 840 | |
841 | /* Do not install route if incoming interface is undefined. */ | |
842 | if (c_oil->oil.mfcc_parent >= MAXVIFS) { | |
843 | if (PIM_DEBUG_MROUTE) { | |
844 | char buf[1000]; | |
845 | zlog_debug( | |
846 | "%s(%s) %s Attempting to add vifi that is invalid to mroute table", | |
847 | __PRETTY_FUNCTION__, name, | |
848 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); | |
849 | } | |
850 | return -2; | |
851 | } | |
d3aded99 | 852 | |
d62a17ae | 853 | /* The linux kernel *expects* the incoming |
854 | * vif to be part of the outgoing list | |
855 | * in the case of a (*,G). | |
856 | */ | |
857 | if (c_oil->oil.mfcc_origin.s_addr == INADDR_ANY) { | |
858 | orig = c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent]; | |
859 | c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent] = 1; | |
860 | } | |
d3aded99 | 861 | |
d62a17ae | 862 | /* |
863 | * If we have an unresolved cache entry for the S,G | |
864 | * it is owned by the pimreg for the incoming IIF | |
865 | * So set pimreg as the IIF temporarily to cause | |
866 | * the packets to be forwarded. Then set it | |
867 | * to the correct IIF afterwords. | |
868 | */ | |
869 | if (!c_oil->installed && c_oil->oil.mfcc_origin.s_addr != INADDR_ANY | |
870 | && c_oil->oil.mfcc_parent != 0) { | |
871 | orig_iif_vif = c_oil->oil.mfcc_parent; | |
872 | c_oil->oil.mfcc_parent = 0; | |
873 | } | |
ff673f45 | 874 | err = setsockopt(pimg->mroute_socket, IPPROTO_IP, MRT_ADD_MFC, |
d62a17ae | 875 | &c_oil->oil, sizeof(c_oil->oil)); |
876 | ||
877 | if (!err && !c_oil->installed | |
878 | && c_oil->oil.mfcc_origin.s_addr != INADDR_ANY | |
879 | && orig_iif_vif != 0) { | |
880 | c_oil->oil.mfcc_parent = orig_iif_vif; | |
ff673f45 | 881 | err = setsockopt(pimg->mroute_socket, IPPROTO_IP, MRT_ADD_MFC, |
d62a17ae | 882 | &c_oil->oil, sizeof(c_oil->oil)); |
883 | } | |
0365f56b | 884 | |
d62a17ae | 885 | if (c_oil->oil.mfcc_origin.s_addr == INADDR_ANY) |
886 | c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent] = orig; | |
d3aded99 | 887 | |
d62a17ae | 888 | if (err) { |
889 | zlog_warn( | |
890 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_ADD_MFC): errno=%d: %s", | |
ff673f45 | 891 | __FILE__, __PRETTY_FUNCTION__, pimg->mroute_socket, |
d62a17ae | 892 | errno, safe_strerror(errno)); |
893 | return -2; | |
894 | } | |
12e41d03 | 895 | |
d62a17ae | 896 | if (PIM_DEBUG_MROUTE) { |
897 | char buf[1000]; | |
898 | zlog_debug("%s(%s), Added Route: %s", __PRETTY_FUNCTION__, name, | |
899 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); | |
900 | } | |
6a78764e | 901 | |
d62a17ae | 902 | c_oil->installed = 1; |
903 | return 0; | |
12e41d03 DL |
904 | } |
905 | ||
d62a17ae | 906 | int pim_mroute_del(struct channel_oil *c_oil, const char *name) |
12e41d03 | 907 | { |
d62a17ae | 908 | int err; |
909 | ||
ff673f45 DS |
910 | pimg->mroute_del_last = pim_time_monotonic_sec(); |
911 | ++pimg->mroute_del_events; | |
d62a17ae | 912 | |
913 | if (!c_oil->installed) { | |
914 | if (PIM_DEBUG_MROUTE) { | |
915 | char buf[1000]; | |
916 | zlog_debug( | |
917 | "%s %s: vifi %d for route is %s not installed, do not need to send del req. ", | |
918 | __FILE__, __PRETTY_FUNCTION__, | |
919 | c_oil->oil.mfcc_parent, | |
920 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); | |
921 | } | |
922 | return -2; | |
923 | } | |
12e41d03 | 924 | |
ff673f45 | 925 | err = setsockopt(pimg->mroute_socket, IPPROTO_IP, MRT_DEL_MFC, |
d62a17ae | 926 | &c_oil->oil, sizeof(c_oil->oil)); |
927 | if (err) { | |
928 | if (PIM_DEBUG_MROUTE) | |
929 | zlog_warn( | |
930 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_DEL_MFC): errno=%d: %s", | |
931 | __FILE__, __PRETTY_FUNCTION__, | |
ff673f45 | 932 | pimg->mroute_socket, errno, |
d62a17ae | 933 | safe_strerror(errno)); |
934 | return -2; | |
935 | } | |
429a291b | 936 | |
d62a17ae | 937 | if (PIM_DEBUG_MROUTE) { |
938 | char buf[1000]; | |
939 | zlog_debug("%s(%s), Deleted Route: %s", __PRETTY_FUNCTION__, | |
940 | name, pim_channel_oil_dump(c_oil, buf, sizeof(buf))); | |
941 | } | |
781a1745 | 942 | |
d62a17ae | 943 | // Reset kernel installed flag |
944 | c_oil->installed = 0; | |
58302dc7 | 945 | |
d62a17ae | 946 | return 0; |
12e41d03 | 947 | } |
3667e8a0 | 948 | |
d62a17ae | 949 | void pim_mroute_update_counters(struct channel_oil *c_oil) |
3667e8a0 | 950 | { |
d62a17ae | 951 | struct sioc_sg_req sgreq; |
952 | ||
953 | c_oil->cc.oldpktcnt = c_oil->cc.pktcnt; | |
954 | c_oil->cc.oldbytecnt = c_oil->cc.bytecnt; | |
955 | c_oil->cc.oldwrong_if = c_oil->cc.wrong_if; | |
956 | ||
957 | if (!c_oil->installed) { | |
958 | c_oil->cc.lastused = 100 * qpim_keep_alive_time; | |
959 | if (PIM_DEBUG_MROUTE) { | |
960 | struct prefix_sg sg; | |
961 | ||
962 | sg.src = c_oil->oil.mfcc_origin; | |
963 | sg.grp = c_oil->oil.mfcc_mcastgrp; | |
964 | if (PIM_DEBUG_MROUTE) | |
965 | zlog_debug( | |
966 | "Channel(%s) is not installed no need to collect data from kernel", | |
967 | pim_str_sg_dump(&sg)); | |
968 | } | |
969 | return; | |
c7b1183f | 970 | } |
c7b1183f | 971 | |
d62a17ae | 972 | memset(&sgreq, 0, sizeof(sgreq)); |
973 | sgreq.src = c_oil->oil.mfcc_origin; | |
974 | sgreq.grp = c_oil->oil.mfcc_mcastgrp; | |
975 | ||
976 | pim_zlookup_sg_statistics(c_oil); | |
ff673f45 | 977 | if (ioctl(pimg->mroute_socket, SIOCGETSGCNT, &sgreq)) { |
d62a17ae | 978 | if (PIM_DEBUG_MROUTE) { |
979 | struct prefix_sg sg; | |
980 | ||
981 | sg.src = c_oil->oil.mfcc_origin; | |
982 | sg.grp = c_oil->oil.mfcc_mcastgrp; | |
983 | ||
984 | zlog_warn( | |
985 | "ioctl(SIOCGETSGCNT=%lu) failure for (S,G)=(%s): errno=%d: %s", | |
986 | (unsigned long)SIOCGETSGCNT, | |
987 | pim_str_sg_dump(&sg), errno, | |
988 | safe_strerror(errno)); | |
989 | } | |
990 | return; | |
c7b1183f | 991 | } |
3667e8a0 | 992 | |
d62a17ae | 993 | c_oil->cc.pktcnt = sgreq.pktcnt; |
994 | c_oil->cc.bytecnt = sgreq.bytecnt; | |
995 | c_oil->cc.wrong_if = sgreq.wrong_if; | |
3667e8a0 | 996 | |
d62a17ae | 997 | return; |
3667e8a0 | 998 | } |