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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" |
3613d898 | 28 | #include "lib_errors.h" |
12e41d03 DL |
29 | |
30 | #include "pimd.h" | |
8e38a2cf | 31 | #include "pim_rpf.h" |
12e41d03 | 32 | #include "pim_mroute.h" |
37653d4f | 33 | #include "pim_oil.h" |
12e41d03 DL |
34 | #include "pim_str.h" |
35 | #include "pim_time.h" | |
36 | #include "pim_iface.h" | |
37 | #include "pim_macro.h" | |
c8ae3ce8 | 38 | #include "pim_rp.h" |
59471fb8 | 39 | #include "pim_oil.h" |
998af219 | 40 | #include "pim_register.h" |
56638739 | 41 | #include "pim_ifchannel.h" |
e3be0432 | 42 | #include "pim_zlookup.h" |
15a5dafe | 43 | #include "pim_ssm.h" |
2002dcdb | 44 | #include "pim_sock.h" |
12e41d03 | 45 | |
8ea5d944 | 46 | static void mroute_read_on(struct pim_instance *pim); |
12e41d03 | 47 | |
cdbfaec5 | 48 | static int pim_mroute_set(struct pim_instance *pim, int enable) |
12e41d03 | 49 | { |
d62a17ae | 50 | int err; |
e5a2ebe6 DS |
51 | int opt, data; |
52 | socklen_t data_len = sizeof(data); | |
d62a17ae | 53 | long flags; |
54 | ||
cdbfaec5 DS |
55 | /* |
56 | * We need to create the VRF table for the pim mroute_socket | |
57 | */ | |
58 | if (pim->vrf_id != VRF_DEFAULT) { | |
01b9e3fd | 59 | frr_elevate_privs(&pimd_privs) { |
f507c196 | 60 | |
e5a2ebe6 | 61 | data = pim->vrf->data.l.table_id; |
01b9e3fd DL |
62 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, |
63 | MRT_TABLE, | |
e5a2ebe6 | 64 | &data, data_len); |
01b9e3fd DL |
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__, | |
e5a2ebe6 | 69 | pim->mroute_socket, data, errno, |
01b9e3fd DL |
70 | safe_strerror(errno)); |
71 | return -1; | |
72 | } | |
f507c196 | 73 | |
01b9e3fd | 74 | } |
f507c196 DS |
75 | } |
76 | ||
f0b009a4 DS |
77 | frr_elevate_privs(&pimd_privs) { |
78 | opt = enable ? MRT_INIT : MRT_DONE; | |
e5a2ebe6 DS |
79 | /* |
80 | * *BSD *cares* about what value we pass down | |
81 | * here | |
82 | */ | |
83 | data = 1; | |
f0b009a4 | 84 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, |
e5a2ebe6 | 85 | opt, &data, data_len); |
f0b009a4 DS |
86 | if (err) { |
87 | zlog_warn( | |
88 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,%s=%d): errno=%d: %s", | |
89 | __FILE__, __PRETTY_FUNCTION__, | |
90 | pim->mroute_socket, | |
e5a2ebe6 | 91 | enable ? "MRT_INIT" : "MRT_DONE", data, errno, |
f0b009a4 DS |
92 | safe_strerror(errno)); |
93 | return -1; | |
94 | } | |
cdbfaec5 DS |
95 | } |
96 | ||
466e4e5b DS |
97 | #if defined(HAVE_IP_PKTINFO) |
98 | if (enable) { | |
99 | /* Linux and Solaris IP_PKTINFO */ | |
e5a2ebe6 DS |
100 | data = 1; |
101 | if (setsockopt(pim->mroute_socket, IPPROTO_IP, IP_PKTINFO, | |
102 | &data, data_len)) { | |
466e4e5b DS |
103 | zlog_warn( |
104 | "Could not set IP_PKTINFO on socket fd=%d: errno=%d: %s", | |
105 | pim->mroute_socket, errno, | |
106 | safe_strerror(errno)); | |
107 | } | |
108 | } | |
109 | #endif | |
110 | ||
cdbfaec5 | 111 | setsockopt_so_recvbuf(pim->mroute_socket, 1024 * 1024 * 8); |
d62a17ae | 112 | |
cdbfaec5 | 113 | flags = fcntl(pim->mroute_socket, F_GETFL, 0); |
d62a17ae | 114 | if (flags < 0) { |
cdbfaec5 DS |
115 | zlog_warn("Could not get flags on socket fd:%d %d %s", |
116 | pim->mroute_socket, errno, safe_strerror(errno)); | |
117 | close(pim->mroute_socket); | |
d62a17ae | 118 | return -1; |
119 | } | |
cdbfaec5 DS |
120 | if (fcntl(pim->mroute_socket, F_SETFL, flags | O_NONBLOCK)) { |
121 | zlog_warn("Could not set O_NONBLOCK on socket fd:%d %d %s", | |
122 | pim->mroute_socket, errno, safe_strerror(errno)); | |
123 | close(pim->mroute_socket); | |
d62a17ae | 124 | return -1; |
125 | } | |
126 | ||
127 | if (enable) { | |
77b7d90b | 128 | #if defined linux |
d62a17ae | 129 | int upcalls = IGMPMSG_WRVIFWHOLE; |
130 | opt = MRT_PIM; | |
131 | ||
cdbfaec5 | 132 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, opt, &upcalls, |
d62a17ae | 133 | sizeof(upcalls)); |
134 | if (err) { | |
135 | zlog_warn( | |
136 | "Failure to register for VIFWHOLE and WRONGVIF upcalls %d %s", | |
137 | errno, safe_strerror(errno)); | |
138 | return -1; | |
139 | } | |
77b7d90b | 140 | #else |
d62a17ae | 141 | zlog_warn( |
142 | "PIM-SM will not work properly on this platform, until the ability to receive the WRVIFWHOLE upcall"); | |
77b7d90b | 143 | #endif |
d62a17ae | 144 | } |
145 | ||
146 | return 0; | |
12e41d03 DL |
147 | } |
148 | ||
08e1fe76 | 149 | static const char *igmpmsgtype2str[IGMPMSG_WRVIFWHOLE + 1] = { |
d62a17ae | 150 | "<unknown_upcall?>", "NOCACHE", "WRONGVIF", "WHOLEPKT", "WRVIFWHOLE"}; |
151 | ||
152 | static int pim_mroute_msg_nocache(int fd, struct interface *ifp, | |
153 | const struct igmpmsg *msg) | |
12e41d03 | 154 | { |
d62a17ae | 155 | struct pim_interface *pim_ifp = ifp->info; |
156 | struct pim_upstream *up; | |
157 | struct pim_rpf *rpg; | |
158 | struct prefix_sg sg; | |
159 | ||
b575a12c | 160 | rpg = pim_ifp ? RP(pim_ifp->pim, msg->im_dst) : NULL; |
d62a17ae | 161 | /* |
162 | * If the incoming interface is unknown OR | |
163 | * the Interface type is SSM we don't need to | |
164 | * do anything here | |
165 | */ | |
b5469d02 | 166 | if (!rpg || pim_rpf_addr_is_inaddr_none(rpg)) { |
d62a17ae | 167 | if (PIM_DEBUG_MROUTE_DETAIL) |
168 | zlog_debug( | |
b5469d02 | 169 | "%s: Interface is not configured correctly to handle incoming packet: Could be !pim_ifp, !SM, !RP", |
d62a17ae | 170 | __PRETTY_FUNCTION__); |
b5469d02 | 171 | |
d62a17ae | 172 | return 0; |
173 | } | |
04b40f02 | 174 | |
d62a17ae | 175 | /* |
176 | * If we've received a multicast packet that isn't connected to | |
177 | * us | |
178 | */ | |
179 | if (!pim_if_connected_to_source(ifp, msg->im_src)) { | |
180 | if (PIM_DEBUG_MROUTE_DETAIL) | |
181 | zlog_debug( | |
182 | "%s: Received incoming packet that doesn't originate on our seg", | |
183 | __PRETTY_FUNCTION__); | |
184 | return 0; | |
185 | } | |
065bee4b | 186 | |
d62a17ae | 187 | memset(&sg, 0, sizeof(struct prefix_sg)); |
188 | sg.src = msg->im_src; | |
189 | sg.grp = msg->im_dst; | |
190 | ||
b5469d02 DS |
191 | if (!(PIM_I_am_DR(pim_ifp))) { |
192 | struct channel_oil *c_oil; | |
193 | ||
194 | if (PIM_DEBUG_MROUTE_DETAIL) | |
195 | zlog_debug("%s: Interface is not the DR blackholing incoming traffic for %s", | |
196 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
197 | ||
198 | /* | |
199 | * We are not the DR, but we are still receiving packets | |
200 | * Let's blackhole those packets for the moment | |
201 | * As that they will be coming up to the cpu | |
202 | * and causing us to consider them. | |
203 | */ | |
204 | c_oil = pim_channel_oil_add(pim_ifp->pim, &sg, | |
205 | pim_ifp->mroute_vif_index); | |
206 | pim_mroute_add(c_oil, __PRETTY_FUNCTION__); | |
207 | ||
208 | return 0; | |
209 | } | |
210 | ||
d62a17ae | 211 | up = pim_upstream_find_or_add(&sg, ifp, PIM_UPSTREAM_FLAG_MASK_FHR, |
212 | __PRETTY_FUNCTION__); | |
213 | if (!up) { | |
214 | if (PIM_DEBUG_MROUTE) { | |
215 | zlog_debug( | |
216 | "%s: Failure to add upstream information for %s", | |
217 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
218 | } | |
219 | return 0; | |
220 | } | |
c29a5806 | 221 | |
d62a17ae | 222 | /* |
223 | * I moved this debug till after the actual add because | |
224 | * I want to take advantage of the up->sg_str being filled in. | |
225 | */ | |
226 | if (PIM_DEBUG_MROUTE) { | |
227 | zlog_debug("%s: Adding a Route %s for WHOLEPKT consumption", | |
228 | __PRETTY_FUNCTION__, up->sg_str); | |
229 | } | |
8bfb8b67 | 230 | |
d62a17ae | 231 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); |
19b807ca | 232 | pim_upstream_keep_alive_timer_start(up, pim_ifp->pim->keep_alive_time); |
d62a17ae | 233 | |
234 | up->channel_oil->cc.pktcnt++; | |
235 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); | |
236 | // resolve mfcc_parent prior to mroute_add in channel_add_oif | |
237 | if (up->channel_oil->oil.mfcc_parent >= MAXVIFS) { | |
238 | int vif_index = 0; | |
239 | vif_index = pim_if_find_vifindex_by_ifindex( | |
7cfc7bcf | 240 | pim_ifp->pim, |
d62a17ae | 241 | up->rpf.source_nexthop.interface->ifindex); |
242 | up->channel_oil->oil.mfcc_parent = vif_index; | |
243 | } | |
244 | pim_register_join(up); | |
59471fb8 | 245 | |
d62a17ae | 246 | return 0; |
e355e30f | 247 | } |
12e41d03 | 248 | |
d62a17ae | 249 | static int pim_mroute_msg_wholepkt(int fd, struct interface *ifp, |
250 | const char *buf) | |
e355e30f | 251 | { |
d62a17ae | 252 | struct pim_interface *pim_ifp; |
253 | struct prefix_sg sg; | |
254 | struct pim_rpf *rpg; | |
255 | const struct ip *ip_hdr; | |
256 | struct pim_upstream *up; | |
257 | ||
9b29ea95 DS |
258 | pim_ifp = ifp->info; |
259 | ||
d62a17ae | 260 | ip_hdr = (const struct ip *)buf; |
261 | ||
262 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
263 | sg.src = ip_hdr->ip_src; | |
264 | sg.grp = ip_hdr->ip_dst; | |
265 | ||
9b29ea95 | 266 | up = pim_upstream_find(pim_ifp->pim, &sg); |
d62a17ae | 267 | if (!up) { |
268 | struct prefix_sg star = sg; | |
269 | star.src.s_addr = INADDR_ANY; | |
270 | ||
9b29ea95 | 271 | up = pim_upstream_find(pim_ifp->pim, &star); |
d62a17ae | 272 | |
273 | if (up && PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(up->flags)) { | |
2002dcdb | 274 | up = pim_upstream_add(pim_ifp->pim, &sg, ifp, |
d62a17ae | 275 | PIM_UPSTREAM_FLAG_MASK_SRC_LHR, |
0885a9f1 | 276 | __PRETTY_FUNCTION__, NULL); |
d62a17ae | 277 | if (!up) { |
278 | if (PIM_DEBUG_MROUTE) | |
279 | zlog_debug( | |
280 | "%s: Unable to create upstream information for %s", | |
281 | __PRETTY_FUNCTION__, | |
282 | pim_str_sg_dump(&sg)); | |
283 | return 0; | |
284 | } | |
285 | pim_upstream_keep_alive_timer_start( | |
19b807ca | 286 | up, pim_ifp->pim->keep_alive_time); |
9b29ea95 | 287 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
1eca8576 DS |
288 | pim_upstream_switch(pim_ifp->pim, up, |
289 | PIM_UPSTREAM_JOINED); | |
d62a17ae | 290 | |
291 | if (PIM_DEBUG_MROUTE) | |
292 | zlog_debug("%s: Creating %s upstream on LHR", | |
293 | __PRETTY_FUNCTION__, up->sg_str); | |
294 | return 0; | |
295 | } | |
296 | if (PIM_DEBUG_MROUTE_DETAIL) { | |
297 | zlog_debug( | |
298 | "%s: Unable to find upstream channel WHOLEPKT%s", | |
299 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
300 | } | |
301 | return 0; | |
302 | } | |
59471fb8 | 303 | |
d62a17ae | 304 | pim_ifp = up->rpf.source_nexthop.interface->info; |
998af219 | 305 | |
b575a12c | 306 | rpg = pim_ifp ? RP(pim_ifp->pim, sg.grp) : NULL; |
c8ae3ce8 | 307 | |
d62a17ae | 308 | if ((pim_rpf_addr_is_inaddr_none(rpg)) || (!pim_ifp) |
309 | || (!(PIM_I_am_DR(pim_ifp)))) { | |
310 | if (PIM_DEBUG_MROUTE) { | |
311 | zlog_debug("%s: Failed Check send packet", | |
312 | __PRETTY_FUNCTION__); | |
313 | } | |
314 | return 0; | |
315 | } | |
84366c7e | 316 | |
d62a17ae | 317 | /* |
318 | * If we've received a register suppress | |
319 | */ | |
320 | if (!up->t_rs_timer) { | |
6f439a70 | 321 | if (pim_is_grp_ssm(pim_ifp->pim, sg.grp)) { |
d62a17ae | 322 | if (PIM_DEBUG_PIM_REG) |
323 | zlog_debug( | |
324 | "%s register forward skipped as group is SSM", | |
325 | pim_str_sg_dump(&sg)); | |
326 | return 0; | |
327 | } | |
328 | pim_register_send((uint8_t *)buf + sizeof(struct ip), | |
329 | ntohs(ip_hdr->ip_len) - sizeof(struct ip), | |
330 | pim_ifp->primary_address, rpg, 0, up); | |
331 | } | |
332 | return 0; | |
e355e30f | 333 | } |
12e41d03 | 334 | |
d62a17ae | 335 | static int pim_mroute_msg_wrongvif(int fd, struct interface *ifp, |
336 | const struct igmpmsg *msg) | |
e355e30f | 337 | { |
d62a17ae | 338 | struct pim_ifchannel *ch; |
339 | struct pim_interface *pim_ifp; | |
340 | struct prefix_sg sg; | |
341 | ||
342 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
343 | sg.src = msg->im_src; | |
344 | sg.grp = msg->im_dst; | |
345 | ||
346 | /* | |
347 | Send Assert(S,G) on iif as response to WRONGVIF kernel upcall. | |
348 | ||
349 | RFC 4601 4.8.2. PIM-SSM-Only Routers | |
350 | ||
351 | iif is the incoming interface of the packet. | |
352 | if (iif is in inherited_olist(S,G)) { | |
353 | send Assert(S,G) on iif | |
354 | } | |
355 | */ | |
356 | ||
357 | if (!ifp) { | |
358 | if (PIM_DEBUG_MROUTE) | |
359 | zlog_debug( | |
360 | "%s: WRONGVIF (S,G)=%s could not find input interface for input_vif_index=%d", | |
361 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
362 | msg->im_vif); | |
363 | return -1; | |
364 | } | |
12e41d03 | 365 | |
d62a17ae | 366 | pim_ifp = ifp->info; |
367 | if (!pim_ifp) { | |
368 | if (PIM_DEBUG_MROUTE) | |
369 | zlog_debug( | |
370 | "%s: WRONGVIF (S,G)=%s multicast not enabled on interface %s", | |
371 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
372 | ifp->name); | |
373 | return -2; | |
374 | } | |
c29a5806 | 375 | |
d62a17ae | 376 | ch = pim_ifchannel_find(ifp, &sg); |
377 | if (!ch) { | |
378 | struct prefix_sg star_g = sg; | |
379 | if (PIM_DEBUG_MROUTE) | |
380 | zlog_debug( | |
381 | "%s: WRONGVIF (S,G)=%s could not find channel on interface %s", | |
382 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
383 | ifp->name); | |
384 | ||
385 | star_g.src.s_addr = INADDR_ANY; | |
386 | ch = pim_ifchannel_find(ifp, &star_g); | |
387 | if (!ch) { | |
388 | if (PIM_DEBUG_MROUTE) | |
389 | zlog_debug( | |
390 | "%s: WRONGVIF (*,G)=%s could not find channel on interface %s", | |
391 | __PRETTY_FUNCTION__, | |
392 | pim_str_sg_dump(&star_g), ifp->name); | |
393 | return -3; | |
394 | } | |
395 | } | |
12e41d03 | 396 | |
d62a17ae | 397 | /* |
398 | RFC 4601: 4.6.1. (S,G) Assert Message State Machine | |
399 | ||
400 | Transitions from NoInfo State | |
401 | ||
402 | An (S,G) data packet arrives on interface I, AND | |
403 | CouldAssert(S,G,I)==TRUE An (S,G) data packet arrived on an | |
404 | downstream interface that is in our (S,G) outgoing interface | |
405 | list. We optimistically assume that we will be the assert | |
406 | winner for this (S,G), and so we transition to the "I am Assert | |
407 | Winner" state and perform Actions A1 (below), which will | |
408 | initiate the assert negotiation for (S,G). | |
409 | */ | |
410 | ||
411 | if (ch->ifassert_state != PIM_IFASSERT_NOINFO) { | |
412 | if (PIM_DEBUG_MROUTE) { | |
413 | zlog_debug( | |
414 | "%s: WRONGVIF (S,G)=%s channel is not on Assert NoInfo state for interface %s", | |
415 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
416 | } | |
417 | return -4; | |
418 | } | |
e355e30f | 419 | |
d62a17ae | 420 | if (!PIM_IF_FLAG_TEST_COULD_ASSERT(ch->flags)) { |
421 | if (PIM_DEBUG_MROUTE) { | |
422 | zlog_debug( | |
423 | "%s: WRONGVIF (S,G)=%s interface %s is not downstream for channel", | |
424 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
425 | } | |
426 | return -5; | |
427 | } | |
428 | ||
429 | if (assert_action_a1(ch)) { | |
430 | if (PIM_DEBUG_MROUTE) { | |
431 | zlog_debug( | |
432 | "%s: WRONGVIF (S,G)=%s assert_action_a1 failure on interface %s", | |
433 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
434 | } | |
435 | return -6; | |
436 | } | |
e355e30f | 437 | |
d62a17ae | 438 | return 0; |
e355e30f DS |
439 | } |
440 | ||
d62a17ae | 441 | static int pim_mroute_msg_wrvifwhole(int fd, struct interface *ifp, |
442 | const char *buf) | |
08e1fe76 | 443 | { |
d62a17ae | 444 | const struct ip *ip_hdr = (const struct ip *)buf; |
445 | struct pim_interface *pim_ifp; | |
446 | struct pim_ifchannel *ch; | |
447 | struct pim_upstream *up; | |
448 | struct prefix_sg star_g; | |
449 | struct prefix_sg sg; | |
450 | struct channel_oil *oil; | |
451 | ||
fec883d9 DS |
452 | pim_ifp = ifp->info; |
453 | ||
d62a17ae | 454 | memset(&sg, 0, sizeof(struct prefix_sg)); |
455 | sg.src = ip_hdr->ip_src; | |
456 | sg.grp = ip_hdr->ip_dst; | |
457 | ||
458 | ch = pim_ifchannel_find(ifp, &sg); | |
459 | if (ch) { | |
460 | if (PIM_DEBUG_MROUTE) | |
461 | zlog_debug( | |
462 | "WRVIFWHOLE (S,G)=%s found ifchannel on interface %s", | |
463 | ch->sg_str, ifp->name); | |
464 | return -1; | |
465 | } | |
b7ddd2ec | 466 | |
d62a17ae | 467 | star_g = sg; |
468 | star_g.src.s_addr = INADDR_ANY; | |
b7ddd2ec | 469 | #if 0 |
0490c22d DS |
470 | ch = pim_ifchannel_find(ifp, &star_g); |
471 | if (ch) | |
472 | { | |
473 | if (PIM_DEBUG_MROUTE) | |
474 | zlog_debug ("WRVIFWHOLE (*,G)=%s found ifchannel on interface %s", | |
475 | pim_str_sg_dump (&star_g), ifp->name); | |
476 | return -1; | |
477 | } | |
5cd11e3c | 478 | #endif |
08e1fe76 | 479 | |
9b29ea95 | 480 | up = pim_upstream_find(pim_ifp->pim, &sg); |
d62a17ae | 481 | if (up) { |
482 | struct pim_upstream *parent; | |
483 | struct pim_nexthop source; | |
fec883d9 | 484 | struct pim_rpf *rpf = RP(pim_ifp->pim, sg.grp); |
d62a17ae | 485 | if (!rpf || !rpf->source_nexthop.interface) |
486 | return 0; | |
487 | ||
488 | /* | |
489 | * If we have received a WRVIFWHOLE and are at this | |
490 | * point, we could be receiving the packet on the *,G | |
491 | * tree, let's check and if so we can safely drop | |
492 | * it. | |
493 | */ | |
9b29ea95 | 494 | parent = pim_upstream_find(pim_ifp->pim, &star_g); |
d62a17ae | 495 | if (parent && parent->rpf.source_nexthop.interface == ifp) |
496 | return 0; | |
497 | ||
498 | pim_ifp = rpf->source_nexthop.interface->info; | |
499 | ||
500 | memset(&source, 0, sizeof(source)); | |
501 | /* | |
502 | * If we are the fhr that means we are getting a callback during | |
503 | * the pimreg period, so I believe we can ignore this packet | |
504 | */ | |
505 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) { | |
506 | // No if channel, but upstream we are at the RP. | |
d9c9a9ee DS |
507 | if (pim_nexthop_lookup(pim_ifp->pim, &source, |
508 | up->upstream_register, 0) | |
df766618 | 509 | == 0) { |
d62a17ae | 510 | pim_register_stop_send(source.interface, &sg, |
511 | pim_ifp->primary_address, | |
512 | up->upstream_register); | |
df766618 DS |
513 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
514 | } | |
d62a17ae | 515 | if (!up->channel_oil) |
516 | up->channel_oil = pim_channel_oil_add( | |
611925dc DS |
517 | pim_ifp->pim, &sg, |
518 | pim_ifp->mroute_vif_index); | |
9b29ea95 | 519 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
d62a17ae | 520 | if (!up->channel_oil->installed) |
521 | pim_mroute_add(up->channel_oil, | |
522 | __PRETTY_FUNCTION__); | |
d62a17ae | 523 | } else { |
d9c9a9ee DS |
524 | if (I_am_RP(pim_ifp->pim, up->sg.grp)) { |
525 | if (pim_nexthop_lookup(pim_ifp->pim, &source, | |
d62a17ae | 526 | up->upstream_register, 0) |
527 | == 0) | |
528 | pim_register_stop_send( | |
529 | source.interface, &sg, | |
530 | pim_ifp->primary_address, | |
531 | up->upstream_register); | |
532 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
533 | } | |
534 | pim_upstream_keep_alive_timer_start( | |
19b807ca | 535 | up, pim_ifp->pim->keep_alive_time); |
9b29ea95 | 536 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
d62a17ae | 537 | pim_mroute_msg_wholepkt(fd, ifp, buf); |
538 | } | |
539 | return 0; | |
540 | } | |
8e38a2cf | 541 | |
d62a17ae | 542 | pim_ifp = ifp->info; |
611925dc | 543 | oil = pim_channel_oil_add(pim_ifp->pim, &sg, pim_ifp->mroute_vif_index); |
d62a17ae | 544 | if (!oil->installed) |
545 | pim_mroute_add(oil, __PRETTY_FUNCTION__); | |
546 | if (pim_if_connected_to_source(ifp, sg.src)) { | |
2002dcdb DS |
547 | up = pim_upstream_add(pim_ifp->pim, &sg, ifp, |
548 | PIM_UPSTREAM_FLAG_MASK_FHR, | |
0885a9f1 | 549 | __PRETTY_FUNCTION__, NULL); |
d62a17ae | 550 | if (!up) { |
551 | if (PIM_DEBUG_MROUTE) | |
552 | zlog_debug( | |
553 | "%s: WRONGVIF%s unable to create upstream on interface", | |
554 | pim_str_sg_dump(&sg), ifp->name); | |
555 | return -2; | |
556 | } | |
557 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); | |
996c9314 LB |
558 | pim_upstream_keep_alive_timer_start( |
559 | up, pim_ifp->pim->keep_alive_time); | |
d62a17ae | 560 | up->channel_oil = oil; |
561 | up->channel_oil->cc.pktcnt++; | |
562 | pim_register_join(up); | |
9b29ea95 | 563 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
d62a17ae | 564 | |
565 | // Send the packet to the RP | |
566 | pim_mroute_msg_wholepkt(fd, ifp, buf); | |
567 | } | |
08e1fe76 | 568 | |
d62a17ae | 569 | return 0; |
08e1fe76 DS |
570 | } |
571 | ||
405d6357 | 572 | static int pim_mroute_msg(struct pim_instance *pim, const char *buf, |
90450a3d | 573 | int buf_size, ifindex_t ifindex) |
e355e30f | 574 | { |
d62a17ae | 575 | struct interface *ifp; |
576 | struct pim_interface *pim_ifp; | |
577 | const struct ip *ip_hdr; | |
578 | const struct igmpmsg *msg; | |
579 | char ip_src_str[INET_ADDRSTRLEN] = ""; | |
580 | char ip_dst_str[INET_ADDRSTRLEN] = ""; | |
581 | char src_str[INET_ADDRSTRLEN] = "<src?>"; | |
582 | char grp_str[INET_ADDRSTRLEN] = "<grp?>"; | |
583 | struct in_addr ifaddr; | |
584 | struct igmp_sock *igmp; | |
585 | ||
586 | ip_hdr = (const struct ip *)buf; | |
587 | ||
588 | if (ip_hdr->ip_p == IPPROTO_IGMP) { | |
589 | ||
590 | /* We have the IP packet but we do not know which interface this | |
591 | * packet was | |
592 | * received on. Find the interface that is on the same subnet as | |
593 | * the source | |
594 | * of the IP packet. | |
595 | */ | |
90450a3d | 596 | ifp = if_lookup_by_index(ifindex, pim->vrf_id); |
d62a17ae | 597 | |
1ef8c24e | 598 | if (!ifp || !ifp->info) |
d62a17ae | 599 | return 0; |
90450a3d | 600 | |
d62a17ae | 601 | pim_ifp = ifp->info; |
602 | ifaddr = pim_find_primary_addr(ifp); | |
603 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
604 | ifaddr); | |
605 | ||
606 | if (PIM_DEBUG_MROUTE) { | |
607 | pim_inet4_dump("<src?>", ip_hdr->ip_src, ip_src_str, | |
608 | sizeof(ip_src_str)); | |
609 | pim_inet4_dump("<dst?>", ip_hdr->ip_dst, ip_dst_str, | |
610 | sizeof(ip_dst_str)); | |
611 | ||
612 | zlog_warn( | |
7c2bfc2a DS |
613 | "%s(%s): igmp kernel upcall on %s(%p) for %s -> %s", |
614 | __PRETTY_FUNCTION__, pim->vrf->name, ifp->name, | |
615 | igmp, ip_src_str, ip_dst_str); | |
d62a17ae | 616 | } |
617 | if (igmp) | |
618 | pim_igmp_packet(igmp, (char *)buf, buf_size); | |
619 | ||
620 | } else if (ip_hdr->ip_p) { | |
621 | if (PIM_DEBUG_MROUTE_DETAIL) { | |
622 | pim_inet4_dump("<src?>", ip_hdr->ip_src, src_str, | |
623 | sizeof(src_str)); | |
624 | pim_inet4_dump("<grp?>", ip_hdr->ip_dst, grp_str, | |
625 | sizeof(grp_str)); | |
626 | zlog_debug( | |
627 | "%s: no kernel upcall proto=%d src: %s dst: %s msg_size=%d", | |
628 | __PRETTY_FUNCTION__, ip_hdr->ip_p, src_str, | |
629 | grp_str, buf_size); | |
630 | } | |
631 | ||
632 | } else { | |
633 | msg = (const struct igmpmsg *)buf; | |
634 | ||
7cfc7bcf | 635 | ifp = pim_if_find_by_vif_index(pim, msg->im_vif); |
d62a17ae | 636 | |
637 | if (!ifp) | |
638 | return 0; | |
639 | if (PIM_DEBUG_MROUTE) { | |
640 | pim_inet4_dump("<src?>", msg->im_src, src_str, | |
641 | sizeof(src_str)); | |
642 | pim_inet4_dump("<grp?>", msg->im_dst, grp_str, | |
643 | sizeof(grp_str)); | |
644 | zlog_warn( | |
645 | "%s: pim kernel upcall %s type=%d ip_p=%d from fd=%d for (S,G)=(%s,%s) on %s vifi=%d size=%d", | |
646 | __PRETTY_FUNCTION__, | |
647 | igmpmsgtype2str[msg->im_msgtype], | |
405d6357 DS |
648 | msg->im_msgtype, ip_hdr->ip_p, |
649 | pim->mroute_socket, src_str, grp_str, ifp->name, | |
650 | msg->im_vif, buf_size); | |
d62a17ae | 651 | } |
652 | ||
653 | switch (msg->im_msgtype) { | |
654 | case IGMPMSG_WRONGVIF: | |
405d6357 DS |
655 | return pim_mroute_msg_wrongvif(pim->mroute_socket, ifp, |
656 | msg); | |
d62a17ae | 657 | break; |
658 | case IGMPMSG_NOCACHE: | |
405d6357 DS |
659 | return pim_mroute_msg_nocache(pim->mroute_socket, ifp, |
660 | msg); | |
d62a17ae | 661 | break; |
662 | case IGMPMSG_WHOLEPKT: | |
405d6357 | 663 | return pim_mroute_msg_wholepkt(pim->mroute_socket, ifp, |
d62a17ae | 664 | (const char *)msg); |
665 | break; | |
666 | case IGMPMSG_WRVIFWHOLE: | |
405d6357 DS |
667 | return pim_mroute_msg_wrvifwhole( |
668 | pim->mroute_socket, ifp, (const char *)msg); | |
d62a17ae | 669 | break; |
670 | default: | |
671 | break; | |
672 | } | |
673 | } | |
12e41d03 | 674 | |
d62a17ae | 675 | return 0; |
12e41d03 DL |
676 | } |
677 | ||
12e41d03 DL |
678 | static int mroute_read(struct thread *t) |
679 | { | |
8ea5d944 | 680 | struct pim_instance *pim; |
d62a17ae | 681 | static long long count; |
682 | char buf[10000]; | |
683 | int result = 0; | |
684 | int cont = 1; | |
d62a17ae | 685 | int rd; |
90450a3d | 686 | ifindex_t ifindex; |
8ea5d944 | 687 | pim = THREAD_ARG(t); |
d62a17ae | 688 | |
689 | while (cont) { | |
90450a3d DS |
690 | rd = pim_socket_recvfromto(pim->mroute_socket, (uint8_t *)buf, |
691 | sizeof(buf), NULL, NULL, NULL, NULL, | |
692 | &ifindex); | |
61e99c94 | 693 | if (rd <= 0) { |
d62a17ae | 694 | if (errno == EINTR) |
695 | continue; | |
696 | if (errno == EWOULDBLOCK || errno == EAGAIN) | |
697 | break; | |
698 | ||
699 | if (PIM_DEBUG_MROUTE) | |
700 | zlog_warn( | |
61e99c94 | 701 | "%s: failure reading rd=%d: fd=%d: errno=%d: %s", |
8ea5d944 DS |
702 | __PRETTY_FUNCTION__, rd, |
703 | pim->mroute_socket, errno, | |
d62a17ae | 704 | safe_strerror(errno)); |
705 | goto done; | |
706 | } | |
707 | ||
90450a3d | 708 | result = pim_mroute_msg(pim, buf, rd, ifindex); |
d62a17ae | 709 | |
710 | count++; | |
711 | if (count % qpim_packet_process == 0) | |
712 | cont = 0; | |
713 | } | |
714 | /* Keep reading */ | |
715 | done: | |
8ea5d944 | 716 | mroute_read_on(pim); |
12e41d03 | 717 | |
d62a17ae | 718 | return result; |
12e41d03 DL |
719 | } |
720 | ||
8ea5d944 | 721 | static void mroute_read_on(struct pim_instance *pim) |
12e41d03 | 722 | { |
36417fcc | 723 | thread_add_read(router->master, mroute_read, pim, pim->mroute_socket, |
8ea5d944 | 724 | &pim->thread); |
12e41d03 DL |
725 | } |
726 | ||
8ea5d944 | 727 | static void mroute_read_off(struct pim_instance *pim) |
12e41d03 | 728 | { |
8ea5d944 | 729 | THREAD_OFF(pim->thread); |
12e41d03 DL |
730 | } |
731 | ||
6beed987 | 732 | int pim_mroute_socket_enable(struct pim_instance *pim) |
12e41d03 | 733 | { |
d62a17ae | 734 | int fd; |
12e41d03 | 735 | |
01b9e3fd | 736 | frr_elevate_privs(&pimd_privs) { |
12e41d03 | 737 | |
01b9e3fd | 738 | fd = socket(AF_INET, SOCK_RAW, IPPROTO_IGMP); |
12e41d03 | 739 | |
01b9e3fd DL |
740 | if (fd < 0) { |
741 | zlog_warn("Could not create mroute socket: errno=%d: %s", | |
742 | errno, | |
743 | safe_strerror(errno)); | |
744 | return -2; | |
745 | } | |
e691f179 | 746 | |
466e4e5b | 747 | #ifdef SO_BINDTODEVICE |
01b9e3fd | 748 | if (pim->vrf->vrf_id != VRF_DEFAULT |
633fc9b1 DL |
749 | && setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, |
750 | pim->vrf->name, strlen(pim->vrf->name))) { | |
01b9e3fd DL |
751 | zlog_warn("Could not setsockopt SO_BINDTODEVICE: %s", |
752 | safe_strerror(errno)); | |
753 | close(fd); | |
754 | return -3; | |
755 | } | |
466e4e5b | 756 | #endif |
90450a3d | 757 | |
01b9e3fd | 758 | } |
12e41d03 | 759 | |
cdbfaec5 DS |
760 | pim->mroute_socket = fd; |
761 | if (pim_mroute_set(pim, 1)) { | |
d62a17ae | 762 | zlog_warn( |
763 | "Could not enable mroute on socket fd=%d: errno=%d: %s", | |
764 | fd, errno, safe_strerror(errno)); | |
765 | close(fd); | |
cdbfaec5 | 766 | pim->mroute_socket = -1; |
d62a17ae | 767 | return -3; |
768 | } | |
12e41d03 | 769 | |
6beed987 | 770 | pim->mroute_socket_creation = pim_time_monotonic_sec(); |
b45cefcb | 771 | |
8ea5d944 | 772 | mroute_read_on(pim); |
12e41d03 | 773 | |
d62a17ae | 774 | return 0; |
12e41d03 DL |
775 | } |
776 | ||
6beed987 | 777 | int pim_mroute_socket_disable(struct pim_instance *pim) |
12e41d03 | 778 | { |
cdbfaec5 | 779 | if (pim_mroute_set(pim, 0)) { |
d62a17ae | 780 | zlog_warn( |
781 | "Could not disable mroute on socket fd=%d: errno=%d: %s", | |
405d6357 | 782 | pim->mroute_socket, errno, safe_strerror(errno)); |
d62a17ae | 783 | return -2; |
784 | } | |
785 | ||
6beed987 | 786 | if (close(pim->mroute_socket)) { |
d62a17ae | 787 | zlog_warn("Failure closing mroute socket: fd=%d errno=%d: %s", |
405d6357 | 788 | pim->mroute_socket, errno, safe_strerror(errno)); |
d62a17ae | 789 | return -3; |
790 | } | |
791 | ||
8ea5d944 | 792 | mroute_read_off(pim); |
6beed987 | 793 | pim->mroute_socket = -1; |
d62a17ae | 794 | |
795 | return 0; | |
12e41d03 DL |
796 | } |
797 | ||
798 | /* | |
799 | For each network interface (e.g., physical or a virtual tunnel) that | |
800 | would be used for multicast forwarding, a corresponding multicast | |
801 | interface must be added to the kernel. | |
802 | */ | |
d62a17ae | 803 | int pim_mroute_add_vif(struct interface *ifp, struct in_addr ifaddr, |
804 | unsigned char flags) | |
12e41d03 | 805 | { |
d62a17ae | 806 | struct pim_interface *pim_ifp = ifp->info; |
807 | struct vifctl vc; | |
808 | int err; | |
12e41d03 | 809 | |
08f4f901 | 810 | if (PIM_DEBUG_MROUTE) |
d62fd596 | 811 | zlog_debug("%s: Add Vif %d (%s[%s])", __PRETTY_FUNCTION__, |
996c9314 LB |
812 | pim_ifp->mroute_vif_index, ifp->name, |
813 | pim_ifp->pim->vrf->name); | |
08f4f901 | 814 | |
d62a17ae | 815 | memset(&vc, 0, sizeof(vc)); |
816 | vc.vifc_vifi = pim_ifp->mroute_vif_index; | |
b3f2bf7c | 817 | #ifdef VIFF_USE_IFINDEX |
d62a17ae | 818 | vc.vifc_lcl_ifindex = ifp->ifindex; |
b3f2bf7c | 819 | #else |
d62a17ae | 820 | if (ifaddr.s_addr == INADDR_ANY) { |
821 | zlog_warn( | |
822 | "%s: unnumbered interfaces are not supported on this platform", | |
823 | __PRETTY_FUNCTION__); | |
824 | return -1; | |
825 | } | |
826 | memcpy(&vc.vifc_lcl_addr, &ifaddr, sizeof(vc.vifc_lcl_addr)); | |
b3f2bf7c | 827 | #endif |
d62a17ae | 828 | vc.vifc_flags = flags; |
829 | vc.vifc_threshold = PIM_MROUTE_MIN_TTL; | |
830 | vc.vifc_rate_limit = 0; | |
831 | ||
832 | #ifdef PIM_DVMRP_TUNNEL | |
833 | if (vc.vifc_flags & VIFF_TUNNEL) { | |
834 | memcpy(&vc.vifc_rmt_addr, &vif_remote_addr, | |
835 | sizeof(vc.vifc_rmt_addr)); | |
836 | } | |
12e41d03 DL |
837 | #endif |
838 | ||
ea3d967b | 839 | err = setsockopt(pim_ifp->pim->mroute_socket, IPPROTO_IP, MRT_ADD_VIF, |
d62a17ae | 840 | (void *)&vc, sizeof(vc)); |
841 | if (err) { | |
842 | char ifaddr_str[INET_ADDRSTRLEN]; | |
12e41d03 | 843 | |
d62a17ae | 844 | pim_inet4_dump("<ifaddr?>", ifaddr, ifaddr_str, |
845 | sizeof(ifaddr_str)); | |
12e41d03 | 846 | |
d62a17ae | 847 | zlog_warn( |
08f4f901 | 848 | "%s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_ADD_VIF,vif_index=%d,ifaddr=%s,flag=%d): errno=%d: %s", |
996c9314 LB |
849 | __PRETTY_FUNCTION__, pim_ifp->pim->mroute_socket, |
850 | ifp->ifindex, ifaddr_str, flags, errno, | |
851 | safe_strerror(errno)); | |
d62a17ae | 852 | return -2; |
853 | } | |
12e41d03 | 854 | |
d62a17ae | 855 | return 0; |
12e41d03 DL |
856 | } |
857 | ||
ea3d967b | 858 | int pim_mroute_del_vif(struct interface *ifp) |
12e41d03 | 859 | { |
ea3d967b | 860 | struct pim_interface *pim_ifp = ifp->info; |
d62a17ae | 861 | struct vifctl vc; |
862 | int err; | |
863 | ||
ea3d967b | 864 | if (PIM_DEBUG_MROUTE) |
996c9314 LB |
865 | zlog_debug("%s: Del Vif %d (%s[%s])", __PRETTY_FUNCTION__, |
866 | pim_ifp->mroute_vif_index, ifp->name, | |
867 | pim_ifp->pim->vrf->name); | |
12e41d03 | 868 | |
d62a17ae | 869 | memset(&vc, 0, sizeof(vc)); |
ea3d967b | 870 | vc.vifc_vifi = pim_ifp->mroute_vif_index; |
d62a17ae | 871 | |
ea3d967b | 872 | err = setsockopt(pim_ifp->pim->mroute_socket, IPPROTO_IP, MRT_DEL_VIF, |
d62a17ae | 873 | (void *)&vc, sizeof(vc)); |
874 | if (err) { | |
875 | zlog_warn( | |
876 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_DEL_VIF,vif_index=%d): errno=%d: %s", | |
ea3d967b DS |
877 | __FILE__, __PRETTY_FUNCTION__, |
878 | pim_ifp->pim->mroute_socket, pim_ifp->mroute_vif_index, | |
879 | errno, safe_strerror(errno)); | |
d62a17ae | 880 | return -2; |
881 | } | |
12e41d03 | 882 | |
d62a17ae | 883 | return 0; |
12e41d03 DL |
884 | } |
885 | ||
6a78764e | 886 | int pim_mroute_add(struct channel_oil *c_oil, const char *name) |
12e41d03 | 887 | { |
9a0f71c9 | 888 | struct pim_instance *pim = c_oil->pim; |
d62a17ae | 889 | int err; |
890 | int orig = 0; | |
891 | int orig_iif_vif = 0; | |
892 | ||
856e863f DS |
893 | pim->mroute_add_last = pim_time_monotonic_sec(); |
894 | ++pim->mroute_add_events; | |
d62a17ae | 895 | |
896 | /* Do not install route if incoming interface is undefined. */ | |
897 | if (c_oil->oil.mfcc_parent >= MAXVIFS) { | |
898 | if (PIM_DEBUG_MROUTE) { | |
899 | char buf[1000]; | |
900 | zlog_debug( | |
901 | "%s(%s) %s Attempting to add vifi that is invalid to mroute table", | |
902 | __PRETTY_FUNCTION__, name, | |
903 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); | |
904 | } | |
905 | return -2; | |
906 | } | |
d3aded99 | 907 | |
d62a17ae | 908 | /* The linux kernel *expects* the incoming |
909 | * vif to be part of the outgoing list | |
910 | * in the case of a (*,G). | |
911 | */ | |
912 | if (c_oil->oil.mfcc_origin.s_addr == INADDR_ANY) { | |
913 | orig = c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent]; | |
914 | c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent] = 1; | |
915 | } | |
d3aded99 | 916 | |
d62a17ae | 917 | /* |
918 | * If we have an unresolved cache entry for the S,G | |
919 | * it is owned by the pimreg for the incoming IIF | |
920 | * So set pimreg as the IIF temporarily to cause | |
921 | * the packets to be forwarded. Then set it | |
922 | * to the correct IIF afterwords. | |
923 | */ | |
924 | if (!c_oil->installed && c_oil->oil.mfcc_origin.s_addr != INADDR_ANY | |
925 | && c_oil->oil.mfcc_parent != 0) { | |
926 | orig_iif_vif = c_oil->oil.mfcc_parent; | |
927 | c_oil->oil.mfcc_parent = 0; | |
928 | } | |
856e863f | 929 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, MRT_ADD_MFC, |
d62a17ae | 930 | &c_oil->oil, sizeof(c_oil->oil)); |
931 | ||
932 | if (!err && !c_oil->installed | |
933 | && c_oil->oil.mfcc_origin.s_addr != INADDR_ANY | |
934 | && orig_iif_vif != 0) { | |
935 | c_oil->oil.mfcc_parent = orig_iif_vif; | |
856e863f | 936 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, MRT_ADD_MFC, |
d62a17ae | 937 | &c_oil->oil, sizeof(c_oil->oil)); |
938 | } | |
0365f56b | 939 | |
d62a17ae | 940 | if (c_oil->oil.mfcc_origin.s_addr == INADDR_ANY) |
941 | c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent] = orig; | |
d3aded99 | 942 | |
d62a17ae | 943 | if (err) { |
944 | zlog_warn( | |
945 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_ADD_MFC): errno=%d: %s", | |
856e863f | 946 | __FILE__, __PRETTY_FUNCTION__, pim->mroute_socket, |
d62a17ae | 947 | errno, safe_strerror(errno)); |
948 | return -2; | |
949 | } | |
12e41d03 | 950 | |
d62a17ae | 951 | if (PIM_DEBUG_MROUTE) { |
952 | char buf[1000]; | |
996c9314 LB |
953 | zlog_debug("%s(%s), vrf %s Added Route: %s", |
954 | __PRETTY_FUNCTION__, name, pim->vrf->name, | |
d62a17ae | 955 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); |
956 | } | |
6a78764e | 957 | |
d62a17ae | 958 | c_oil->installed = 1; |
959 | return 0; | |
12e41d03 DL |
960 | } |
961 | ||
d62a17ae | 962 | int pim_mroute_del(struct channel_oil *c_oil, const char *name) |
12e41d03 | 963 | { |
9a0f71c9 | 964 | struct pim_instance *pim = c_oil->pim; |
d62a17ae | 965 | int err; |
966 | ||
856e863f DS |
967 | pim->mroute_del_last = pim_time_monotonic_sec(); |
968 | ++pim->mroute_del_events; | |
d62a17ae | 969 | |
970 | if (!c_oil->installed) { | |
971 | if (PIM_DEBUG_MROUTE) { | |
972 | char buf[1000]; | |
973 | zlog_debug( | |
974 | "%s %s: vifi %d for route is %s not installed, do not need to send del req. ", | |
975 | __FILE__, __PRETTY_FUNCTION__, | |
976 | c_oil->oil.mfcc_parent, | |
977 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); | |
978 | } | |
979 | return -2; | |
980 | } | |
12e41d03 | 981 | |
856e863f | 982 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, MRT_DEL_MFC, |
d62a17ae | 983 | &c_oil->oil, sizeof(c_oil->oil)); |
984 | if (err) { | |
985 | if (PIM_DEBUG_MROUTE) | |
986 | zlog_warn( | |
987 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_DEL_MFC): errno=%d: %s", | |
988 | __FILE__, __PRETTY_FUNCTION__, | |
856e863f | 989 | pim->mroute_socket, errno, |
d62a17ae | 990 | safe_strerror(errno)); |
991 | return -2; | |
992 | } | |
429a291b | 993 | |
d62a17ae | 994 | if (PIM_DEBUG_MROUTE) { |
995 | char buf[1000]; | |
996c9314 LB |
996 | zlog_debug("%s(%s), vrf %s Deleted Route: %s", |
997 | __PRETTY_FUNCTION__, name, pim->vrf->name, | |
d62fd596 | 998 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); |
d62a17ae | 999 | } |
781a1745 | 1000 | |
d62a17ae | 1001 | // Reset kernel installed flag |
1002 | c_oil->installed = 0; | |
58302dc7 | 1003 | |
d62a17ae | 1004 | return 0; |
12e41d03 | 1005 | } |
3667e8a0 | 1006 | |
d62a17ae | 1007 | void pim_mroute_update_counters(struct channel_oil *c_oil) |
3667e8a0 | 1008 | { |
9a0f71c9 | 1009 | struct pim_instance *pim = c_oil->pim; |
d62a17ae | 1010 | struct sioc_sg_req sgreq; |
1011 | ||
1012 | c_oil->cc.oldpktcnt = c_oil->cc.pktcnt; | |
1013 | c_oil->cc.oldbytecnt = c_oil->cc.bytecnt; | |
1014 | c_oil->cc.oldwrong_if = c_oil->cc.wrong_if; | |
1015 | ||
1016 | if (!c_oil->installed) { | |
19b807ca | 1017 | c_oil->cc.lastused = 100 * pim->keep_alive_time; |
d62a17ae | 1018 | if (PIM_DEBUG_MROUTE) { |
1019 | struct prefix_sg sg; | |
1020 | ||
1021 | sg.src = c_oil->oil.mfcc_origin; | |
1022 | sg.grp = c_oil->oil.mfcc_mcastgrp; | |
1023 | if (PIM_DEBUG_MROUTE) | |
1024 | zlog_debug( | |
1025 | "Channel(%s) is not installed no need to collect data from kernel", | |
1026 | pim_str_sg_dump(&sg)); | |
1027 | } | |
1028 | return; | |
c7b1183f | 1029 | } |
c7b1183f | 1030 | |
d62a17ae | 1031 | memset(&sgreq, 0, sizeof(sgreq)); |
1032 | sgreq.src = c_oil->oil.mfcc_origin; | |
1033 | sgreq.grp = c_oil->oil.mfcc_mcastgrp; | |
1034 | ||
1035 | pim_zlookup_sg_statistics(c_oil); | |
856e863f | 1036 | if (ioctl(pim->mroute_socket, SIOCGETSGCNT, &sgreq)) { |
d62a17ae | 1037 | if (PIM_DEBUG_MROUTE) { |
1038 | struct prefix_sg sg; | |
1039 | ||
1040 | sg.src = c_oil->oil.mfcc_origin; | |
1041 | sg.grp = c_oil->oil.mfcc_mcastgrp; | |
1042 | ||
1043 | zlog_warn( | |
1044 | "ioctl(SIOCGETSGCNT=%lu) failure for (S,G)=(%s): errno=%d: %s", | |
1045 | (unsigned long)SIOCGETSGCNT, | |
1046 | pim_str_sg_dump(&sg), errno, | |
1047 | safe_strerror(errno)); | |
1048 | } | |
1049 | return; | |
c7b1183f | 1050 | } |
3667e8a0 | 1051 | |
d62a17ae | 1052 | c_oil->cc.pktcnt = sgreq.pktcnt; |
1053 | c_oil->cc.bytecnt = sgreq.bytecnt; | |
1054 | c_oil->cc.wrong_if = sgreq.wrong_if; | |
3667e8a0 | 1055 | |
d62a17ae | 1056 | return; |
3667e8a0 | 1057 | } |