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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" |
37c3fd98 | 45 | #include "pim_vxlan.h" |
12e41d03 | 46 | |
8ea5d944 | 47 | static void mroute_read_on(struct pim_instance *pim); |
12e41d03 | 48 | |
cdbfaec5 | 49 | static int pim_mroute_set(struct pim_instance *pim, int enable) |
12e41d03 | 50 | { |
d62a17ae | 51 | int err; |
e5a2ebe6 DS |
52 | int opt, data; |
53 | socklen_t data_len = sizeof(data); | |
d62a17ae | 54 | long flags; |
55 | ||
cdbfaec5 DS |
56 | /* |
57 | * We need to create the VRF table for the pim mroute_socket | |
58 | */ | |
59 | if (pim->vrf_id != VRF_DEFAULT) { | |
0cf6db21 | 60 | frr_with_privs(&pimd_privs) { |
f507c196 | 61 | |
e5a2ebe6 | 62 | data = pim->vrf->data.l.table_id; |
01b9e3fd DL |
63 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, |
64 | MRT_TABLE, | |
e5a2ebe6 | 65 | &data, data_len); |
01b9e3fd DL |
66 | if (err) { |
67 | zlog_warn( | |
68 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP, MRT_TABLE=%d): errno=%d: %s", | |
69 | __FILE__, __PRETTY_FUNCTION__, | |
e5a2ebe6 | 70 | pim->mroute_socket, data, errno, |
01b9e3fd DL |
71 | safe_strerror(errno)); |
72 | return -1; | |
73 | } | |
f507c196 | 74 | |
01b9e3fd | 75 | } |
f507c196 DS |
76 | } |
77 | ||
0cf6db21 | 78 | frr_with_privs(&pimd_privs) { |
f0b009a4 | 79 | opt = enable ? MRT_INIT : MRT_DONE; |
e5a2ebe6 DS |
80 | /* |
81 | * *BSD *cares* about what value we pass down | |
82 | * here | |
83 | */ | |
84 | data = 1; | |
f0b009a4 | 85 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, |
e5a2ebe6 | 86 | opt, &data, data_len); |
f0b009a4 DS |
87 | if (err) { |
88 | zlog_warn( | |
89 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,%s=%d): errno=%d: %s", | |
90 | __FILE__, __PRETTY_FUNCTION__, | |
91 | pim->mroute_socket, | |
e5a2ebe6 | 92 | enable ? "MRT_INIT" : "MRT_DONE", data, errno, |
f0b009a4 DS |
93 | safe_strerror(errno)); |
94 | return -1; | |
95 | } | |
cdbfaec5 DS |
96 | } |
97 | ||
466e4e5b DS |
98 | #if defined(HAVE_IP_PKTINFO) |
99 | if (enable) { | |
100 | /* Linux and Solaris IP_PKTINFO */ | |
e5a2ebe6 DS |
101 | data = 1; |
102 | if (setsockopt(pim->mroute_socket, IPPROTO_IP, IP_PKTINFO, | |
103 | &data, data_len)) { | |
466e4e5b DS |
104 | zlog_warn( |
105 | "Could not set IP_PKTINFO on socket fd=%d: errno=%d: %s", | |
106 | pim->mroute_socket, errno, | |
107 | safe_strerror(errno)); | |
108 | } | |
109 | } | |
110 | #endif | |
111 | ||
cdbfaec5 | 112 | setsockopt_so_recvbuf(pim->mroute_socket, 1024 * 1024 * 8); |
d62a17ae | 113 | |
cdbfaec5 | 114 | flags = fcntl(pim->mroute_socket, F_GETFL, 0); |
d62a17ae | 115 | if (flags < 0) { |
cdbfaec5 DS |
116 | zlog_warn("Could not get flags on socket fd:%d %d %s", |
117 | pim->mroute_socket, errno, safe_strerror(errno)); | |
118 | close(pim->mroute_socket); | |
d62a17ae | 119 | return -1; |
120 | } | |
cdbfaec5 DS |
121 | if (fcntl(pim->mroute_socket, F_SETFL, flags | O_NONBLOCK)) { |
122 | zlog_warn("Could not set O_NONBLOCK on socket fd:%d %d %s", | |
123 | pim->mroute_socket, errno, safe_strerror(errno)); | |
124 | close(pim->mroute_socket); | |
d62a17ae | 125 | return -1; |
126 | } | |
127 | ||
128 | if (enable) { | |
77b7d90b | 129 | #if defined linux |
d62a17ae | 130 | int upcalls = IGMPMSG_WRVIFWHOLE; |
131 | opt = MRT_PIM; | |
132 | ||
cdbfaec5 | 133 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, opt, &upcalls, |
d62a17ae | 134 | sizeof(upcalls)); |
135 | if (err) { | |
136 | zlog_warn( | |
137 | "Failure to register for VIFWHOLE and WRONGVIF upcalls %d %s", | |
138 | errno, safe_strerror(errno)); | |
139 | return -1; | |
140 | } | |
77b7d90b | 141 | #else |
d62a17ae | 142 | zlog_warn( |
143 | "PIM-SM will not work properly on this platform, until the ability to receive the WRVIFWHOLE upcall"); | |
77b7d90b | 144 | #endif |
d62a17ae | 145 | } |
146 | ||
147 | return 0; | |
12e41d03 DL |
148 | } |
149 | ||
08e1fe76 | 150 | static const char *igmpmsgtype2str[IGMPMSG_WRVIFWHOLE + 1] = { |
d62a17ae | 151 | "<unknown_upcall?>", "NOCACHE", "WRONGVIF", "WHOLEPKT", "WRVIFWHOLE"}; |
152 | ||
153 | static int pim_mroute_msg_nocache(int fd, struct interface *ifp, | |
154 | const struct igmpmsg *msg) | |
12e41d03 | 155 | { |
d62a17ae | 156 | struct pim_interface *pim_ifp = ifp->info; |
157 | struct pim_upstream *up; | |
158 | struct pim_rpf *rpg; | |
159 | struct prefix_sg sg; | |
160 | ||
b575a12c | 161 | rpg = pim_ifp ? RP(pim_ifp->pim, msg->im_dst) : NULL; |
d62a17ae | 162 | /* |
163 | * If the incoming interface is unknown OR | |
164 | * the Interface type is SSM we don't need to | |
165 | * do anything here | |
166 | */ | |
b5469d02 | 167 | if (!rpg || pim_rpf_addr_is_inaddr_none(rpg)) { |
d62a17ae | 168 | if (PIM_DEBUG_MROUTE_DETAIL) |
169 | zlog_debug( | |
b5469d02 | 170 | "%s: Interface is not configured correctly to handle incoming packet: Could be !pim_ifp, !SM, !RP", |
d62a17ae | 171 | __PRETTY_FUNCTION__); |
b5469d02 | 172 | |
d62a17ae | 173 | return 0; |
174 | } | |
04b40f02 | 175 | |
d62a17ae | 176 | /* |
177 | * If we've received a multicast packet that isn't connected to | |
178 | * us | |
179 | */ | |
180 | if (!pim_if_connected_to_source(ifp, msg->im_src)) { | |
181 | if (PIM_DEBUG_MROUTE_DETAIL) | |
182 | zlog_debug( | |
183 | "%s: Received incoming packet that doesn't originate on our seg", | |
184 | __PRETTY_FUNCTION__); | |
185 | return 0; | |
186 | } | |
065bee4b | 187 | |
d62a17ae | 188 | memset(&sg, 0, sizeof(struct prefix_sg)); |
189 | sg.src = msg->im_src; | |
190 | sg.grp = msg->im_dst; | |
191 | ||
b5469d02 | 192 | if (!(PIM_I_am_DR(pim_ifp))) { |
b5469d02 DS |
193 | if (PIM_DEBUG_MROUTE_DETAIL) |
194 | zlog_debug("%s: Interface is not the DR blackholing incoming traffic for %s", | |
195 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
196 | ||
197 | /* | |
198 | * We are not the DR, but we are still receiving packets | |
199 | * Let's blackhole those packets for the moment | |
200 | * As that they will be coming up to the cpu | |
201 | * and causing us to consider them. | |
9e132a49 DS |
202 | * |
203 | * This *will* create a dangling channel_oil | |
204 | * that I see no way to get rid of. Just noting | |
205 | * this for future reference. | |
b5469d02 | 206 | */ |
02434c43 DS |
207 | up = pim_upstream_find_or_add( |
208 | &sg, ifp, PIM_UPSTREAM_FLAG_MASK_SRC_NOCACHE, | |
209 | __PRETTY_FUNCTION__); | |
69e3538c | 210 | pim_upstream_mroute_add(up->channel_oil, __PRETTY_FUNCTION__); |
b5469d02 DS |
211 | |
212 | return 0; | |
213 | } | |
214 | ||
d62a17ae | 215 | up = pim_upstream_find_or_add(&sg, ifp, PIM_UPSTREAM_FLAG_MASK_FHR, |
216 | __PRETTY_FUNCTION__); | |
c29a5806 | 217 | |
d62a17ae | 218 | /* |
219 | * I moved this debug till after the actual add because | |
220 | * I want to take advantage of the up->sg_str being filled in. | |
221 | */ | |
222 | if (PIM_DEBUG_MROUTE) { | |
223 | zlog_debug("%s: Adding a Route %s for WHOLEPKT consumption", | |
224 | __PRETTY_FUNCTION__, up->sg_str); | |
225 | } | |
8bfb8b67 | 226 | |
d62a17ae | 227 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); |
19b807ca | 228 | pim_upstream_keep_alive_timer_start(up, pim_ifp->pim->keep_alive_time); |
d62a17ae | 229 | |
230 | up->channel_oil->cc.pktcnt++; | |
d62a17ae | 231 | // resolve mfcc_parent prior to mroute_add in channel_add_oif |
957d93ea SP |
232 | if (up->rpf.source_nexthop.interface && |
233 | up->channel_oil->oil.mfcc_parent >= MAXVIFS) { | |
7984af18 | 234 | pim_upstream_mroute_iif_update(up->channel_oil, __func__); |
d62a17ae | 235 | } |
236 | pim_register_join(up); | |
59471fb8 | 237 | |
d62a17ae | 238 | return 0; |
e355e30f | 239 | } |
12e41d03 | 240 | |
d62a17ae | 241 | static int pim_mroute_msg_wholepkt(int fd, struct interface *ifp, |
242 | const char *buf) | |
e355e30f | 243 | { |
d62a17ae | 244 | struct pim_interface *pim_ifp; |
245 | struct prefix_sg sg; | |
246 | struct pim_rpf *rpg; | |
247 | const struct ip *ip_hdr; | |
248 | struct pim_upstream *up; | |
249 | ||
9b29ea95 DS |
250 | pim_ifp = ifp->info; |
251 | ||
d62a17ae | 252 | ip_hdr = (const struct ip *)buf; |
253 | ||
254 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
255 | sg.src = ip_hdr->ip_src; | |
256 | sg.grp = ip_hdr->ip_dst; | |
257 | ||
9b29ea95 | 258 | up = pim_upstream_find(pim_ifp->pim, &sg); |
d62a17ae | 259 | if (!up) { |
260 | struct prefix_sg star = sg; | |
261 | star.src.s_addr = INADDR_ANY; | |
262 | ||
9b29ea95 | 263 | up = pim_upstream_find(pim_ifp->pim, &star); |
d62a17ae | 264 | |
265 | if (up && PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(up->flags)) { | |
2002dcdb | 266 | up = pim_upstream_add(pim_ifp->pim, &sg, ifp, |
d62a17ae | 267 | PIM_UPSTREAM_FLAG_MASK_SRC_LHR, |
0885a9f1 | 268 | __PRETTY_FUNCTION__, NULL); |
d62a17ae | 269 | if (!up) { |
270 | if (PIM_DEBUG_MROUTE) | |
271 | zlog_debug( | |
272 | "%s: Unable to create upstream information for %s", | |
273 | __PRETTY_FUNCTION__, | |
274 | pim_str_sg_dump(&sg)); | |
275 | return 0; | |
276 | } | |
277 | pim_upstream_keep_alive_timer_start( | |
19b807ca | 278 | up, pim_ifp->pim->keep_alive_time); |
9b29ea95 | 279 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
1eca8576 DS |
280 | pim_upstream_switch(pim_ifp->pim, up, |
281 | PIM_UPSTREAM_JOINED); | |
d62a17ae | 282 | |
283 | if (PIM_DEBUG_MROUTE) | |
284 | zlog_debug("%s: Creating %s upstream on LHR", | |
285 | __PRETTY_FUNCTION__, up->sg_str); | |
286 | return 0; | |
287 | } | |
288 | if (PIM_DEBUG_MROUTE_DETAIL) { | |
289 | zlog_debug( | |
290 | "%s: Unable to find upstream channel WHOLEPKT%s", | |
291 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
292 | } | |
293 | return 0; | |
294 | } | |
59471fb8 | 295 | |
957d93ea | 296 | if (!up->rpf.source_nexthop.interface) { |
23fc858a | 297 | if (PIM_DEBUG_PIM_TRACE) |
957d93ea SP |
298 | zlog_debug("%s: up %s RPF is not present", |
299 | __PRETTY_FUNCTION__, up->sg_str); | |
300 | return 0; | |
301 | } | |
302 | ||
d62a17ae | 303 | pim_ifp = up->rpf.source_nexthop.interface->info; |
998af219 | 304 | |
b575a12c | 305 | rpg = pim_ifp ? RP(pim_ifp->pim, sg.grp) : NULL; |
c8ae3ce8 | 306 | |
d62a17ae | 307 | if ((pim_rpf_addr_is_inaddr_none(rpg)) || (!pim_ifp) |
308 | || (!(PIM_I_am_DR(pim_ifp)))) { | |
309 | if (PIM_DEBUG_MROUTE) { | |
310 | zlog_debug("%s: Failed Check send packet", | |
311 | __PRETTY_FUNCTION__); | |
312 | } | |
313 | return 0; | |
314 | } | |
84366c7e | 315 | |
d62a17ae | 316 | /* |
317 | * If we've received a register suppress | |
318 | */ | |
319 | if (!up->t_rs_timer) { | |
6f439a70 | 320 | if (pim_is_grp_ssm(pim_ifp->pim, sg.grp)) { |
d62a17ae | 321 | if (PIM_DEBUG_PIM_REG) |
322 | zlog_debug( | |
323 | "%s register forward skipped as group is SSM", | |
324 | pim_str_sg_dump(&sg)); | |
325 | return 0; | |
326 | } | |
327 | pim_register_send((uint8_t *)buf + sizeof(struct ip), | |
328 | ntohs(ip_hdr->ip_len) - sizeof(struct ip), | |
329 | pim_ifp->primary_address, rpg, 0, up); | |
330 | } | |
331 | return 0; | |
e355e30f | 332 | } |
12e41d03 | 333 | |
d62a17ae | 334 | static int pim_mroute_msg_wrongvif(int fd, struct interface *ifp, |
335 | const struct igmpmsg *msg) | |
e355e30f | 336 | { |
d62a17ae | 337 | struct pim_ifchannel *ch; |
338 | struct pim_interface *pim_ifp; | |
339 | struct prefix_sg sg; | |
340 | ||
341 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
342 | sg.src = msg->im_src; | |
343 | sg.grp = msg->im_dst; | |
344 | ||
345 | /* | |
346 | Send Assert(S,G) on iif as response to WRONGVIF kernel upcall. | |
347 | ||
348 | RFC 4601 4.8.2. PIM-SSM-Only Routers | |
349 | ||
350 | iif is the incoming interface of the packet. | |
351 | if (iif is in inherited_olist(S,G)) { | |
352 | send Assert(S,G) on iif | |
353 | } | |
354 | */ | |
355 | ||
356 | if (!ifp) { | |
357 | if (PIM_DEBUG_MROUTE) | |
358 | zlog_debug( | |
359 | "%s: WRONGVIF (S,G)=%s could not find input interface for input_vif_index=%d", | |
360 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
361 | msg->im_vif); | |
362 | return -1; | |
363 | } | |
12e41d03 | 364 | |
d62a17ae | 365 | pim_ifp = ifp->info; |
366 | if (!pim_ifp) { | |
367 | if (PIM_DEBUG_MROUTE) | |
368 | zlog_debug( | |
369 | "%s: WRONGVIF (S,G)=%s multicast not enabled on interface %s", | |
370 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
371 | ifp->name); | |
372 | return -2; | |
373 | } | |
c29a5806 | 374 | |
d62a17ae | 375 | ch = pim_ifchannel_find(ifp, &sg); |
376 | if (!ch) { | |
377 | struct prefix_sg star_g = sg; | |
378 | if (PIM_DEBUG_MROUTE) | |
379 | zlog_debug( | |
380 | "%s: WRONGVIF (S,G)=%s could not find channel on interface %s", | |
381 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
382 | ifp->name); | |
383 | ||
384 | star_g.src.s_addr = INADDR_ANY; | |
385 | ch = pim_ifchannel_find(ifp, &star_g); | |
386 | if (!ch) { | |
387 | if (PIM_DEBUG_MROUTE) | |
388 | zlog_debug( | |
389 | "%s: WRONGVIF (*,G)=%s could not find channel on interface %s", | |
390 | __PRETTY_FUNCTION__, | |
391 | pim_str_sg_dump(&star_g), ifp->name); | |
392 | return -3; | |
393 | } | |
394 | } | |
12e41d03 | 395 | |
d62a17ae | 396 | /* |
397 | RFC 4601: 4.6.1. (S,G) Assert Message State Machine | |
398 | ||
399 | Transitions from NoInfo State | |
400 | ||
401 | An (S,G) data packet arrives on interface I, AND | |
402 | CouldAssert(S,G,I)==TRUE An (S,G) data packet arrived on an | |
403 | downstream interface that is in our (S,G) outgoing interface | |
404 | list. We optimistically assume that we will be the assert | |
405 | winner for this (S,G), and so we transition to the "I am Assert | |
406 | Winner" state and perform Actions A1 (below), which will | |
407 | initiate the assert negotiation for (S,G). | |
408 | */ | |
409 | ||
410 | if (ch->ifassert_state != PIM_IFASSERT_NOINFO) { | |
411 | if (PIM_DEBUG_MROUTE) { | |
412 | zlog_debug( | |
413 | "%s: WRONGVIF (S,G)=%s channel is not on Assert NoInfo state for interface %s", | |
414 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
415 | } | |
416 | return -4; | |
417 | } | |
e355e30f | 418 | |
d62a17ae | 419 | if (!PIM_IF_FLAG_TEST_COULD_ASSERT(ch->flags)) { |
420 | if (PIM_DEBUG_MROUTE) { | |
421 | zlog_debug( | |
422 | "%s: WRONGVIF (S,G)=%s interface %s is not downstream for channel", | |
423 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
424 | } | |
425 | return -5; | |
426 | } | |
427 | ||
428 | if (assert_action_a1(ch)) { | |
429 | if (PIM_DEBUG_MROUTE) { | |
430 | zlog_debug( | |
431 | "%s: WRONGVIF (S,G)=%s assert_action_a1 failure on interface %s", | |
432 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
433 | } | |
434 | return -6; | |
435 | } | |
e355e30f | 436 | |
d62a17ae | 437 | return 0; |
e355e30f DS |
438 | } |
439 | ||
d62a17ae | 440 | static int pim_mroute_msg_wrvifwhole(int fd, struct interface *ifp, |
441 | const char *buf) | |
08e1fe76 | 442 | { |
d62a17ae | 443 | const struct ip *ip_hdr = (const struct ip *)buf; |
444 | struct pim_interface *pim_ifp; | |
445 | struct pim_ifchannel *ch; | |
446 | struct pim_upstream *up; | |
447 | struct prefix_sg star_g; | |
448 | struct prefix_sg sg; | |
d62a17ae | 449 | |
fec883d9 DS |
450 | pim_ifp = ifp->info; |
451 | ||
d62a17ae | 452 | memset(&sg, 0, sizeof(struct prefix_sg)); |
453 | sg.src = ip_hdr->ip_src; | |
454 | sg.grp = ip_hdr->ip_dst; | |
455 | ||
456 | ch = pim_ifchannel_find(ifp, &sg); | |
457 | if (ch) { | |
458 | if (PIM_DEBUG_MROUTE) | |
459 | zlog_debug( | |
460 | "WRVIFWHOLE (S,G)=%s found ifchannel on interface %s", | |
461 | ch->sg_str, ifp->name); | |
462 | return -1; | |
463 | } | |
b7ddd2ec | 464 | |
d62a17ae | 465 | star_g = sg; |
466 | star_g.src.s_addr = INADDR_ANY; | |
b7ddd2ec | 467 | #if 0 |
0490c22d DS |
468 | ch = pim_ifchannel_find(ifp, &star_g); |
469 | if (ch) | |
470 | { | |
471 | if (PIM_DEBUG_MROUTE) | |
472 | zlog_debug ("WRVIFWHOLE (*,G)=%s found ifchannel on interface %s", | |
473 | pim_str_sg_dump (&star_g), ifp->name); | |
474 | return -1; | |
475 | } | |
5cd11e3c | 476 | #endif |
08e1fe76 | 477 | |
9b29ea95 | 478 | up = pim_upstream_find(pim_ifp->pim, &sg); |
d62a17ae | 479 | if (up) { |
480 | struct pim_upstream *parent; | |
481 | struct pim_nexthop source; | |
fec883d9 | 482 | struct pim_rpf *rpf = RP(pim_ifp->pim, sg.grp); |
d62a17ae | 483 | if (!rpf || !rpf->source_nexthop.interface) |
484 | return 0; | |
485 | ||
486 | /* | |
487 | * If we have received a WRVIFWHOLE and are at this | |
488 | * point, we could be receiving the packet on the *,G | |
489 | * tree, let's check and if so we can safely drop | |
490 | * it. | |
491 | */ | |
9b29ea95 | 492 | parent = pim_upstream_find(pim_ifp->pim, &star_g); |
d62a17ae | 493 | if (parent && parent->rpf.source_nexthop.interface == ifp) |
494 | return 0; | |
495 | ||
496 | pim_ifp = rpf->source_nexthop.interface->info; | |
497 | ||
498 | memset(&source, 0, sizeof(source)); | |
499 | /* | |
500 | * If we are the fhr that means we are getting a callback during | |
501 | * the pimreg period, so I believe we can ignore this packet | |
502 | */ | |
503 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) { | |
504 | // No if channel, but upstream we are at the RP. | |
d9c9a9ee | 505 | if (pim_nexthop_lookup(pim_ifp->pim, &source, |
ade155e1 | 506 | up->upstream_register, 0)) { |
d62a17ae | 507 | pim_register_stop_send(source.interface, &sg, |
508 | pim_ifp->primary_address, | |
509 | up->upstream_register); | |
df766618 DS |
510 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
511 | } | |
46dd6edb | 512 | |
9b29ea95 | 513 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
d62a17ae | 514 | if (!up->channel_oil->installed) |
69e3538c | 515 | pim_upstream_mroute_add(up->channel_oil, |
d62a17ae | 516 | __PRETTY_FUNCTION__); |
d62a17ae | 517 | } else { |
d9c9a9ee DS |
518 | if (I_am_RP(pim_ifp->pim, up->sg.grp)) { |
519 | if (pim_nexthop_lookup(pim_ifp->pim, &source, | |
ade155e1 DS |
520 | up->upstream_register, |
521 | 0)) | |
d62a17ae | 522 | pim_register_stop_send( |
523 | source.interface, &sg, | |
524 | pim_ifp->primary_address, | |
525 | up->upstream_register); | |
526 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
527 | } | |
528 | pim_upstream_keep_alive_timer_start( | |
19b807ca | 529 | up, pim_ifp->pim->keep_alive_time); |
9b29ea95 | 530 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
d62a17ae | 531 | pim_mroute_msg_wholepkt(fd, ifp, buf); |
532 | } | |
533 | return 0; | |
534 | } | |
8e38a2cf | 535 | |
d62a17ae | 536 | pim_ifp = ifp->info; |
d62a17ae | 537 | if (pim_if_connected_to_source(ifp, sg.src)) { |
2002dcdb DS |
538 | up = pim_upstream_add(pim_ifp->pim, &sg, ifp, |
539 | PIM_UPSTREAM_FLAG_MASK_FHR, | |
0885a9f1 | 540 | __PRETTY_FUNCTION__, NULL); |
d62a17ae | 541 | if (!up) { |
542 | if (PIM_DEBUG_MROUTE) | |
543 | zlog_debug( | |
544 | "%s: WRONGVIF%s unable to create upstream on interface", | |
545 | pim_str_sg_dump(&sg), ifp->name); | |
546 | return -2; | |
547 | } | |
548 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); | |
996c9314 LB |
549 | pim_upstream_keep_alive_timer_start( |
550 | up, pim_ifp->pim->keep_alive_time); | |
d62a17ae | 551 | up->channel_oil->cc.pktcnt++; |
552 | pim_register_join(up); | |
9b29ea95 | 553 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
69e3538c AK |
554 | if (!up->channel_oil->installed) |
555 | pim_upstream_mroute_add(up->channel_oil, __func__); | |
d62a17ae | 556 | |
557 | // Send the packet to the RP | |
558 | pim_mroute_msg_wholepkt(fd, ifp, buf); | |
02434c43 DS |
559 | } else { |
560 | up = pim_upstream_add(pim_ifp->pim, &sg, ifp, | |
561 | PIM_UPSTREAM_FLAG_MASK_SRC_NOCACHE, | |
562 | __PRETTY_FUNCTION__, NULL); | |
563 | if (!up->channel_oil->installed) | |
69e3538c AK |
564 | pim_upstream_mroute_add(up->channel_oil, |
565 | __PRETTY_FUNCTION__); | |
d62a17ae | 566 | } |
08e1fe76 | 567 | |
d62a17ae | 568 | return 0; |
08e1fe76 DS |
569 | } |
570 | ||
405d6357 | 571 | static int pim_mroute_msg(struct pim_instance *pim, const char *buf, |
90450a3d | 572 | int buf_size, ifindex_t ifindex) |
e355e30f | 573 | { |
d62a17ae | 574 | struct interface *ifp; |
575 | struct pim_interface *pim_ifp; | |
576 | const struct ip *ip_hdr; | |
577 | const struct igmpmsg *msg; | |
578 | char ip_src_str[INET_ADDRSTRLEN] = ""; | |
579 | char ip_dst_str[INET_ADDRSTRLEN] = ""; | |
580 | char src_str[INET_ADDRSTRLEN] = "<src?>"; | |
581 | char grp_str[INET_ADDRSTRLEN] = "<grp?>"; | |
582 | struct in_addr ifaddr; | |
583 | struct igmp_sock *igmp; | |
584 | ||
585 | ip_hdr = (const struct ip *)buf; | |
586 | ||
587 | if (ip_hdr->ip_p == IPPROTO_IGMP) { | |
588 | ||
589 | /* We have the IP packet but we do not know which interface this | |
590 | * packet was | |
591 | * received on. Find the interface that is on the same subnet as | |
592 | * the source | |
593 | * of the IP packet. | |
594 | */ | |
90450a3d | 595 | ifp = if_lookup_by_index(ifindex, pim->vrf_id); |
d62a17ae | 596 | |
1ef8c24e | 597 | if (!ifp || !ifp->info) |
d62a17ae | 598 | return 0; |
90450a3d | 599 | |
d62a17ae | 600 | pim_ifp = ifp->info; |
601 | ifaddr = pim_find_primary_addr(ifp); | |
602 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
603 | ifaddr); | |
604 | ||
605 | if (PIM_DEBUG_MROUTE) { | |
606 | pim_inet4_dump("<src?>", ip_hdr->ip_src, ip_src_str, | |
607 | sizeof(ip_src_str)); | |
608 | pim_inet4_dump("<dst?>", ip_hdr->ip_dst, ip_dst_str, | |
609 | sizeof(ip_dst_str)); | |
610 | ||
fb9670aa | 611 | zlog_debug( |
7c2bfc2a DS |
612 | "%s(%s): igmp kernel upcall on %s(%p) for %s -> %s", |
613 | __PRETTY_FUNCTION__, pim->vrf->name, ifp->name, | |
614 | igmp, ip_src_str, ip_dst_str); | |
d62a17ae | 615 | } |
616 | if (igmp) | |
617 | pim_igmp_packet(igmp, (char *)buf, buf_size); | |
618 | ||
619 | } else if (ip_hdr->ip_p) { | |
620 | if (PIM_DEBUG_MROUTE_DETAIL) { | |
621 | pim_inet4_dump("<src?>", ip_hdr->ip_src, src_str, | |
622 | sizeof(src_str)); | |
623 | pim_inet4_dump("<grp?>", ip_hdr->ip_dst, grp_str, | |
624 | sizeof(grp_str)); | |
625 | zlog_debug( | |
626 | "%s: no kernel upcall proto=%d src: %s dst: %s msg_size=%d", | |
627 | __PRETTY_FUNCTION__, ip_hdr->ip_p, src_str, | |
628 | grp_str, buf_size); | |
629 | } | |
630 | ||
631 | } else { | |
632 | msg = (const struct igmpmsg *)buf; | |
633 | ||
7cfc7bcf | 634 | ifp = pim_if_find_by_vif_index(pim, msg->im_vif); |
d62a17ae | 635 | |
636 | if (!ifp) | |
637 | return 0; | |
638 | if (PIM_DEBUG_MROUTE) { | |
639 | pim_inet4_dump("<src?>", msg->im_src, src_str, | |
640 | sizeof(src_str)); | |
641 | pim_inet4_dump("<grp?>", msg->im_dst, grp_str, | |
642 | sizeof(grp_str)); | |
fb9670aa | 643 | zlog_debug( |
d62a17ae | 644 | "%s: pim kernel upcall %s type=%d ip_p=%d from fd=%d for (S,G)=(%s,%s) on %s vifi=%d size=%d", |
645 | __PRETTY_FUNCTION__, | |
646 | igmpmsgtype2str[msg->im_msgtype], | |
405d6357 DS |
647 | msg->im_msgtype, ip_hdr->ip_p, |
648 | pim->mroute_socket, src_str, grp_str, ifp->name, | |
649 | msg->im_vif, buf_size); | |
d62a17ae | 650 | } |
651 | ||
652 | switch (msg->im_msgtype) { | |
653 | case IGMPMSG_WRONGVIF: | |
405d6357 DS |
654 | return pim_mroute_msg_wrongvif(pim->mroute_socket, ifp, |
655 | msg); | |
d62a17ae | 656 | break; |
657 | case IGMPMSG_NOCACHE: | |
405d6357 DS |
658 | return pim_mroute_msg_nocache(pim->mroute_socket, ifp, |
659 | msg); | |
d62a17ae | 660 | break; |
661 | case IGMPMSG_WHOLEPKT: | |
405d6357 | 662 | return pim_mroute_msg_wholepkt(pim->mroute_socket, ifp, |
d62a17ae | 663 | (const char *)msg); |
664 | break; | |
665 | case IGMPMSG_WRVIFWHOLE: | |
405d6357 DS |
666 | return pim_mroute_msg_wrvifwhole( |
667 | pim->mroute_socket, ifp, (const char *)msg); | |
d62a17ae | 668 | break; |
669 | default: | |
670 | break; | |
671 | } | |
672 | } | |
12e41d03 | 673 | |
d62a17ae | 674 | return 0; |
12e41d03 DL |
675 | } |
676 | ||
12e41d03 DL |
677 | static int mroute_read(struct thread *t) |
678 | { | |
8ea5d944 | 679 | struct pim_instance *pim; |
d62a17ae | 680 | static long long count; |
681 | char buf[10000]; | |
682 | int result = 0; | |
683 | int cont = 1; | |
d62a17ae | 684 | int rd; |
90450a3d | 685 | ifindex_t ifindex; |
8ea5d944 | 686 | pim = THREAD_ARG(t); |
d62a17ae | 687 | |
688 | while (cont) { | |
90450a3d DS |
689 | rd = pim_socket_recvfromto(pim->mroute_socket, (uint8_t *)buf, |
690 | sizeof(buf), NULL, NULL, NULL, NULL, | |
691 | &ifindex); | |
61e99c94 | 692 | if (rd <= 0) { |
d62a17ae | 693 | if (errno == EINTR) |
694 | continue; | |
695 | if (errno == EWOULDBLOCK || errno == EAGAIN) | |
696 | break; | |
697 | ||
fb9670aa DS |
698 | zlog_warn("%s: failure reading rd=%d: fd=%d: errno=%d: %s", |
699 | __PRETTY_FUNCTION__, rd, pim->mroute_socket, | |
700 | errno, safe_strerror(errno)); | |
d62a17ae | 701 | goto done; |
702 | } | |
703 | ||
90450a3d | 704 | result = pim_mroute_msg(pim, buf, rd, ifindex); |
d62a17ae | 705 | |
706 | count++; | |
75373cca | 707 | if (count % router->packet_process == 0) |
d62a17ae | 708 | cont = 0; |
709 | } | |
710 | /* Keep reading */ | |
711 | done: | |
8ea5d944 | 712 | mroute_read_on(pim); |
12e41d03 | 713 | |
d62a17ae | 714 | return result; |
12e41d03 DL |
715 | } |
716 | ||
8ea5d944 | 717 | static void mroute_read_on(struct pim_instance *pim) |
12e41d03 | 718 | { |
36417fcc | 719 | thread_add_read(router->master, mroute_read, pim, pim->mroute_socket, |
8ea5d944 | 720 | &pim->thread); |
12e41d03 DL |
721 | } |
722 | ||
8ea5d944 | 723 | static void mroute_read_off(struct pim_instance *pim) |
12e41d03 | 724 | { |
8ea5d944 | 725 | THREAD_OFF(pim->thread); |
12e41d03 DL |
726 | } |
727 | ||
6beed987 | 728 | int pim_mroute_socket_enable(struct pim_instance *pim) |
12e41d03 | 729 | { |
d62a17ae | 730 | int fd; |
12e41d03 | 731 | |
0cf6db21 | 732 | frr_with_privs(&pimd_privs) { |
12e41d03 | 733 | |
01b9e3fd | 734 | fd = socket(AF_INET, SOCK_RAW, IPPROTO_IGMP); |
12e41d03 | 735 | |
01b9e3fd DL |
736 | if (fd < 0) { |
737 | zlog_warn("Could not create mroute socket: errno=%d: %s", | |
738 | errno, | |
739 | safe_strerror(errno)); | |
740 | return -2; | |
741 | } | |
e691f179 | 742 | |
466e4e5b | 743 | #ifdef SO_BINDTODEVICE |
01b9e3fd | 744 | if (pim->vrf->vrf_id != VRF_DEFAULT |
633fc9b1 DL |
745 | && setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, |
746 | pim->vrf->name, strlen(pim->vrf->name))) { | |
01b9e3fd DL |
747 | zlog_warn("Could not setsockopt SO_BINDTODEVICE: %s", |
748 | safe_strerror(errno)); | |
749 | close(fd); | |
750 | return -3; | |
751 | } | |
466e4e5b | 752 | #endif |
90450a3d | 753 | |
01b9e3fd | 754 | } |
12e41d03 | 755 | |
cdbfaec5 DS |
756 | pim->mroute_socket = fd; |
757 | if (pim_mroute_set(pim, 1)) { | |
d62a17ae | 758 | zlog_warn( |
759 | "Could not enable mroute on socket fd=%d: errno=%d: %s", | |
760 | fd, errno, safe_strerror(errno)); | |
761 | close(fd); | |
cdbfaec5 | 762 | pim->mroute_socket = -1; |
d62a17ae | 763 | return -3; |
764 | } | |
12e41d03 | 765 | |
6beed987 | 766 | pim->mroute_socket_creation = pim_time_monotonic_sec(); |
b45cefcb | 767 | |
8ea5d944 | 768 | mroute_read_on(pim); |
12e41d03 | 769 | |
d62a17ae | 770 | return 0; |
12e41d03 DL |
771 | } |
772 | ||
6beed987 | 773 | int pim_mroute_socket_disable(struct pim_instance *pim) |
12e41d03 | 774 | { |
cdbfaec5 | 775 | if (pim_mroute_set(pim, 0)) { |
d62a17ae | 776 | zlog_warn( |
777 | "Could not disable mroute on socket fd=%d: errno=%d: %s", | |
405d6357 | 778 | pim->mroute_socket, errno, safe_strerror(errno)); |
d62a17ae | 779 | return -2; |
780 | } | |
781 | ||
6beed987 | 782 | if (close(pim->mroute_socket)) { |
d62a17ae | 783 | zlog_warn("Failure closing mroute socket: fd=%d errno=%d: %s", |
405d6357 | 784 | pim->mroute_socket, errno, safe_strerror(errno)); |
d62a17ae | 785 | return -3; |
786 | } | |
787 | ||
8ea5d944 | 788 | mroute_read_off(pim); |
6beed987 | 789 | pim->mroute_socket = -1; |
d62a17ae | 790 | |
791 | return 0; | |
12e41d03 DL |
792 | } |
793 | ||
794 | /* | |
795 | For each network interface (e.g., physical or a virtual tunnel) that | |
796 | would be used for multicast forwarding, a corresponding multicast | |
797 | interface must be added to the kernel. | |
798 | */ | |
d62a17ae | 799 | int pim_mroute_add_vif(struct interface *ifp, struct in_addr ifaddr, |
800 | unsigned char flags) | |
12e41d03 | 801 | { |
d62a17ae | 802 | struct pim_interface *pim_ifp = ifp->info; |
803 | struct vifctl vc; | |
804 | int err; | |
12e41d03 | 805 | |
08f4f901 | 806 | if (PIM_DEBUG_MROUTE) |
d62fd596 | 807 | zlog_debug("%s: Add Vif %d (%s[%s])", __PRETTY_FUNCTION__, |
996c9314 LB |
808 | pim_ifp->mroute_vif_index, ifp->name, |
809 | pim_ifp->pim->vrf->name); | |
08f4f901 | 810 | |
d62a17ae | 811 | memset(&vc, 0, sizeof(vc)); |
812 | vc.vifc_vifi = pim_ifp->mroute_vif_index; | |
b3f2bf7c | 813 | #ifdef VIFF_USE_IFINDEX |
d62a17ae | 814 | vc.vifc_lcl_ifindex = ifp->ifindex; |
b3f2bf7c | 815 | #else |
d62a17ae | 816 | if (ifaddr.s_addr == INADDR_ANY) { |
817 | zlog_warn( | |
818 | "%s: unnumbered interfaces are not supported on this platform", | |
819 | __PRETTY_FUNCTION__); | |
820 | return -1; | |
821 | } | |
822 | memcpy(&vc.vifc_lcl_addr, &ifaddr, sizeof(vc.vifc_lcl_addr)); | |
b3f2bf7c | 823 | #endif |
d62a17ae | 824 | vc.vifc_flags = flags; |
825 | vc.vifc_threshold = PIM_MROUTE_MIN_TTL; | |
826 | vc.vifc_rate_limit = 0; | |
827 | ||
828 | #ifdef PIM_DVMRP_TUNNEL | |
829 | if (vc.vifc_flags & VIFF_TUNNEL) { | |
830 | memcpy(&vc.vifc_rmt_addr, &vif_remote_addr, | |
831 | sizeof(vc.vifc_rmt_addr)); | |
832 | } | |
12e41d03 DL |
833 | #endif |
834 | ||
ea3d967b | 835 | err = setsockopt(pim_ifp->pim->mroute_socket, IPPROTO_IP, MRT_ADD_VIF, |
d62a17ae | 836 | (void *)&vc, sizeof(vc)); |
837 | if (err) { | |
838 | char ifaddr_str[INET_ADDRSTRLEN]; | |
12e41d03 | 839 | |
d62a17ae | 840 | pim_inet4_dump("<ifaddr?>", ifaddr, ifaddr_str, |
841 | sizeof(ifaddr_str)); | |
12e41d03 | 842 | |
d62a17ae | 843 | zlog_warn( |
08f4f901 | 844 | "%s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_ADD_VIF,vif_index=%d,ifaddr=%s,flag=%d): errno=%d: %s", |
996c9314 LB |
845 | __PRETTY_FUNCTION__, pim_ifp->pim->mroute_socket, |
846 | ifp->ifindex, ifaddr_str, flags, errno, | |
847 | safe_strerror(errno)); | |
d62a17ae | 848 | return -2; |
849 | } | |
12e41d03 | 850 | |
d62a17ae | 851 | return 0; |
12e41d03 DL |
852 | } |
853 | ||
ea3d967b | 854 | int pim_mroute_del_vif(struct interface *ifp) |
12e41d03 | 855 | { |
ea3d967b | 856 | struct pim_interface *pim_ifp = ifp->info; |
d62a17ae | 857 | struct vifctl vc; |
858 | int err; | |
859 | ||
ea3d967b | 860 | if (PIM_DEBUG_MROUTE) |
996c9314 LB |
861 | zlog_debug("%s: Del Vif %d (%s[%s])", __PRETTY_FUNCTION__, |
862 | pim_ifp->mroute_vif_index, ifp->name, | |
863 | pim_ifp->pim->vrf->name); | |
12e41d03 | 864 | |
d62a17ae | 865 | memset(&vc, 0, sizeof(vc)); |
ea3d967b | 866 | vc.vifc_vifi = pim_ifp->mroute_vif_index; |
d62a17ae | 867 | |
ea3d967b | 868 | err = setsockopt(pim_ifp->pim->mroute_socket, IPPROTO_IP, MRT_DEL_VIF, |
d62a17ae | 869 | (void *)&vc, sizeof(vc)); |
870 | if (err) { | |
871 | zlog_warn( | |
872 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_DEL_VIF,vif_index=%d): errno=%d: %s", | |
ea3d967b DS |
873 | __FILE__, __PRETTY_FUNCTION__, |
874 | pim_ifp->pim->mroute_socket, pim_ifp->mroute_vif_index, | |
875 | errno, safe_strerror(errno)); | |
d62a17ae | 876 | return -2; |
877 | } | |
12e41d03 | 878 | |
d62a17ae | 879 | return 0; |
12e41d03 DL |
880 | } |
881 | ||
5a5f404e AK |
882 | static inline void pim_mroute_copy(struct mfcctl *oil, |
883 | struct channel_oil *c_oil) | |
884 | { | |
885 | int i; | |
886 | ||
887 | oil->mfcc_origin = c_oil->oil.mfcc_origin; | |
888 | oil->mfcc_mcastgrp = c_oil->oil.mfcc_mcastgrp; | |
889 | oil->mfcc_parent = c_oil->oil.mfcc_parent; | |
890 | ||
891 | for (i = 0; i < MAXVIFS; ++i) { | |
892 | if (c_oil->oif_flags[i] & PIM_OIF_FLAG_MUTE) | |
893 | oil->mfcc_ttls[i] = 0; | |
894 | else | |
895 | oil->mfcc_ttls[i] = c_oil->oil.mfcc_ttls[i]; | |
896 | } | |
897 | } | |
898 | ||
69e3538c AK |
899 | /* This function must not be called directly 0 |
900 | * use pim_upstream_mroute_add or pim_static_mroute_add instead | |
901 | */ | |
902 | static int pim_mroute_add(struct channel_oil *c_oil, const char *name) | |
12e41d03 | 903 | { |
9a0f71c9 | 904 | struct pim_instance *pim = c_oil->pim; |
5a5f404e | 905 | struct mfcctl tmp_oil; |
d62a17ae | 906 | int err; |
d62a17ae | 907 | |
856e863f DS |
908 | pim->mroute_add_last = pim_time_monotonic_sec(); |
909 | ++pim->mroute_add_events; | |
d62a17ae | 910 | |
5a5f404e AK |
911 | /* Copy the oil to a temporary structure to fixup (without need to |
912 | * later restore) before sending the mroute add to the dataplane | |
913 | */ | |
914 | pim_mroute_copy(&tmp_oil, c_oil); | |
915 | ||
d62a17ae | 916 | /* The linux kernel *expects* the incoming |
917 | * vif to be part of the outgoing list | |
918 | * in the case of a (*,G). | |
919 | */ | |
920 | if (c_oil->oil.mfcc_origin.s_addr == INADDR_ANY) { | |
5a5f404e | 921 | tmp_oil.mfcc_ttls[c_oil->oil.mfcc_parent] = 1; |
76e4825a AK |
922 | } |
923 | ||
d62a17ae | 924 | /* |
925 | * If we have an unresolved cache entry for the S,G | |
926 | * it is owned by the pimreg for the incoming IIF | |
927 | * So set pimreg as the IIF temporarily to cause | |
928 | * the packets to be forwarded. Then set it | |
929 | * to the correct IIF afterwords. | |
930 | */ | |
931 | if (!c_oil->installed && c_oil->oil.mfcc_origin.s_addr != INADDR_ANY | |
932 | && c_oil->oil.mfcc_parent != 0) { | |
5a5f404e | 933 | tmp_oil.mfcc_parent = 0; |
d62a17ae | 934 | } |
856e863f | 935 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, MRT_ADD_MFC, |
5a5f404e | 936 | &tmp_oil, sizeof(tmp_oil)); |
d62a17ae | 937 | |
938 | if (!err && !c_oil->installed | |
939 | && c_oil->oil.mfcc_origin.s_addr != INADDR_ANY | |
5a5f404e AK |
940 | && c_oil->oil.mfcc_parent != 0) { |
941 | tmp_oil.mfcc_parent = c_oil->oil.mfcc_parent; | |
856e863f | 942 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, MRT_ADD_MFC, |
5a5f404e | 943 | &tmp_oil, sizeof(tmp_oil)); |
d62a17ae | 944 | } |
0365f56b | 945 | |
d62a17ae | 946 | if (err) { |
947 | zlog_warn( | |
948 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_ADD_MFC): errno=%d: %s", | |
856e863f | 949 | __FILE__, __PRETTY_FUNCTION__, pim->mroute_socket, |
d62a17ae | 950 | errno, safe_strerror(errno)); |
951 | return -2; | |
952 | } | |
12e41d03 | 953 | |
d62a17ae | 954 | if (PIM_DEBUG_MROUTE) { |
955 | char buf[1000]; | |
996c9314 LB |
956 | zlog_debug("%s(%s), vrf %s Added Route: %s", |
957 | __PRETTY_FUNCTION__, name, pim->vrf->name, | |
d62a17ae | 958 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); |
959 | } | |
6a78764e | 960 | |
d62a17ae | 961 | c_oil->installed = 1; |
e7cd85bd SP |
962 | c_oil->mroute_creation = pim_time_monotonic_sec(); |
963 | ||
d62a17ae | 964 | return 0; |
12e41d03 DL |
965 | } |
966 | ||
7984af18 AK |
967 | static int pim_upstream_get_mroute_iif(struct channel_oil *c_oil, |
968 | const char *name) | |
69e3538c AK |
969 | { |
970 | vifi_t iif = MAXVIFS; | |
69e3538c AK |
971 | struct interface *ifp = NULL; |
972 | struct pim_interface *pim_ifp; | |
973 | struct pim_upstream *up = c_oil->up; | |
974 | ||
975 | if (up) { | |
976 | if (PIM_UPSTREAM_FLAG_TEST_USE_RPT(up->flags)) { | |
977 | if (up->parent) | |
978 | ifp = up->parent->rpf.source_nexthop.interface; | |
979 | } else { | |
980 | ifp = up->rpf.source_nexthop.interface; | |
981 | } | |
982 | if (ifp) { | |
983 | pim_ifp = (struct pim_interface *)ifp->info; | |
984 | if (pim_ifp) | |
985 | iif = pim_ifp->mroute_vif_index; | |
986 | } | |
987 | } | |
7984af18 AK |
988 | return iif; |
989 | } | |
69e3538c | 990 | |
7984af18 AK |
991 | static int pim_upstream_mroute_update(struct channel_oil *c_oil, |
992 | const char *name) | |
993 | { | |
994 | char buf[1000]; | |
69e3538c AK |
995 | |
996 | if (c_oil->oil.mfcc_parent >= MAXVIFS) { | |
997 | /* the c_oil cannot be installed as a mroute yet */ | |
998 | if (PIM_DEBUG_MROUTE) | |
999 | zlog_debug( | |
1000 | "%s(%s) %s mroute not ready to be installed; %s", | |
7984af18 | 1001 | __func__, name, |
69e3538c AK |
1002 | pim_channel_oil_dump(c_oil, buf, |
1003 | sizeof(buf)), | |
1004 | c_oil->installed ? | |
1005 | "uninstall" : "skip"); | |
1006 | /* if already installed flush it out as we are going to stop | |
1007 | * updates to it leaving it in a stale state | |
1008 | */ | |
1009 | if (c_oil->installed) | |
1010 | pim_mroute_del(c_oil, name); | |
1011 | /* return success (skipped) */ | |
1012 | return 0; | |
1013 | } | |
1014 | ||
1015 | return pim_mroute_add(c_oil, name); | |
1016 | } | |
1017 | ||
7984af18 AK |
1018 | /* In the case of "PIM state machine" added mroutes an upstream entry |
1019 | * must be present to decide on the SPT-forwarding vs. RPT-forwarding. | |
1020 | */ | |
1021 | int pim_upstream_mroute_add(struct channel_oil *c_oil, const char *name) | |
1022 | { | |
1023 | c_oil->oil.mfcc_parent = pim_upstream_get_mroute_iif(c_oil, name); | |
1024 | ||
1025 | return pim_upstream_mroute_update(c_oil, name); | |
1026 | } | |
1027 | ||
1028 | /* Look for IIF changes and update the dateplane entry only if the IIF | |
1029 | * has changed. | |
1030 | */ | |
1031 | int pim_upstream_mroute_iif_update(struct channel_oil *c_oil, const char *name) | |
1032 | { | |
1033 | vifi_t iif; | |
1034 | char buf[1000]; | |
1035 | ||
1036 | iif = pim_upstream_get_mroute_iif(c_oil, name); | |
1037 | if (c_oil->oil.mfcc_parent == iif) { | |
1038 | /* no change */ | |
1039 | return 0; | |
1040 | } | |
1041 | c_oil->oil.mfcc_parent = iif; | |
1042 | ||
1043 | if (PIM_DEBUG_MROUTE_DETAIL) | |
1044 | zlog_debug("%s(%s) %s mroute iif update %d", | |
1045 | __func__, name, | |
1046 | pim_channel_oil_dump(c_oil, buf, | |
1047 | sizeof(buf)), iif); | |
1048 | /* XXX: is this hack needed? */ | |
1049 | c_oil->oil_inherited_rescan = 1; | |
1050 | return pim_upstream_mroute_update(c_oil, name); | |
1051 | } | |
1052 | ||
69e3538c AK |
1053 | int pim_static_mroute_add(struct channel_oil *c_oil, const char *name) |
1054 | { | |
1055 | return pim_mroute_add(c_oil, name); | |
1056 | } | |
1057 | ||
7984af18 AK |
1058 | void pim_static_mroute_iif_update(struct channel_oil *c_oil, |
1059 | int input_vif_index, | |
1060 | const char *name) | |
1061 | { | |
1062 | if (c_oil->oil.mfcc_parent == input_vif_index) | |
1063 | return; | |
1064 | ||
1065 | c_oil->oil.mfcc_parent = input_vif_index; | |
1066 | if (input_vif_index == MAXVIFS) | |
1067 | pim_mroute_del(c_oil, name); | |
1068 | else | |
1069 | pim_static_mroute_add(c_oil, name); | |
1070 | } | |
1071 | ||
d62a17ae | 1072 | int pim_mroute_del(struct channel_oil *c_oil, const char *name) |
12e41d03 | 1073 | { |
9a0f71c9 | 1074 | struct pim_instance *pim = c_oil->pim; |
d62a17ae | 1075 | int err; |
1076 | ||
856e863f DS |
1077 | pim->mroute_del_last = pim_time_monotonic_sec(); |
1078 | ++pim->mroute_del_events; | |
d62a17ae | 1079 | |
1080 | if (!c_oil->installed) { | |
1081 | if (PIM_DEBUG_MROUTE) { | |
1082 | char buf[1000]; | |
1083 | zlog_debug( | |
1084 | "%s %s: vifi %d for route is %s not installed, do not need to send del req. ", | |
1085 | __FILE__, __PRETTY_FUNCTION__, | |
1086 | c_oil->oil.mfcc_parent, | |
1087 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); | |
1088 | } | |
1089 | return -2; | |
1090 | } | |
12e41d03 | 1091 | |
856e863f | 1092 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, MRT_DEL_MFC, |
d62a17ae | 1093 | &c_oil->oil, sizeof(c_oil->oil)); |
1094 | if (err) { | |
1095 | if (PIM_DEBUG_MROUTE) | |
1096 | zlog_warn( | |
1097 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_DEL_MFC): errno=%d: %s", | |
1098 | __FILE__, __PRETTY_FUNCTION__, | |
856e863f | 1099 | pim->mroute_socket, errno, |
d62a17ae | 1100 | safe_strerror(errno)); |
1101 | return -2; | |
1102 | } | |
429a291b | 1103 | |
d62a17ae | 1104 | if (PIM_DEBUG_MROUTE) { |
1105 | char buf[1000]; | |
996c9314 LB |
1106 | zlog_debug("%s(%s), vrf %s Deleted Route: %s", |
1107 | __PRETTY_FUNCTION__, name, pim->vrf->name, | |
d62fd596 | 1108 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); |
d62a17ae | 1109 | } |
781a1745 | 1110 | |
d62a17ae | 1111 | // Reset kernel installed flag |
1112 | c_oil->installed = 0; | |
58302dc7 | 1113 | |
d62a17ae | 1114 | return 0; |
12e41d03 | 1115 | } |
3667e8a0 | 1116 | |
d62a17ae | 1117 | void pim_mroute_update_counters(struct channel_oil *c_oil) |
3667e8a0 | 1118 | { |
9a0f71c9 | 1119 | struct pim_instance *pim = c_oil->pim; |
d62a17ae | 1120 | struct sioc_sg_req sgreq; |
1121 | ||
1122 | c_oil->cc.oldpktcnt = c_oil->cc.pktcnt; | |
1123 | c_oil->cc.oldbytecnt = c_oil->cc.bytecnt; | |
1124 | c_oil->cc.oldwrong_if = c_oil->cc.wrong_if; | |
1125 | ||
1126 | if (!c_oil->installed) { | |
19b807ca | 1127 | c_oil->cc.lastused = 100 * pim->keep_alive_time; |
d62a17ae | 1128 | if (PIM_DEBUG_MROUTE) { |
1129 | struct prefix_sg sg; | |
1130 | ||
1131 | sg.src = c_oil->oil.mfcc_origin; | |
1132 | sg.grp = c_oil->oil.mfcc_mcastgrp; | |
1133 | if (PIM_DEBUG_MROUTE) | |
1134 | zlog_debug( | |
41714081 | 1135 | "Channel%s is not installed no need to collect data from kernel", |
d62a17ae | 1136 | pim_str_sg_dump(&sg)); |
1137 | } | |
1138 | return; | |
c7b1183f | 1139 | } |
c7b1183f | 1140 | |
d62a17ae | 1141 | memset(&sgreq, 0, sizeof(sgreq)); |
1142 | sgreq.src = c_oil->oil.mfcc_origin; | |
1143 | sgreq.grp = c_oil->oil.mfcc_mcastgrp; | |
1144 | ||
1145 | pim_zlookup_sg_statistics(c_oil); | |
856e863f | 1146 | if (ioctl(pim->mroute_socket, SIOCGETSGCNT, &sgreq)) { |
fb9670aa | 1147 | struct prefix_sg sg; |
d62a17ae | 1148 | |
fb9670aa DS |
1149 | sg.src = c_oil->oil.mfcc_origin; |
1150 | sg.grp = c_oil->oil.mfcc_mcastgrp; | |
d62a17ae | 1151 | |
fb9670aa DS |
1152 | zlog_warn("ioctl(SIOCGETSGCNT=%lu) failure for (S,G)=%s: errno=%d: %s", |
1153 | (unsigned long)SIOCGETSGCNT, pim_str_sg_dump(&sg), | |
1154 | errno, safe_strerror(errno)); | |
d62a17ae | 1155 | return; |
c7b1183f | 1156 | } |
3667e8a0 | 1157 | |
d62a17ae | 1158 | c_oil->cc.pktcnt = sgreq.pktcnt; |
1159 | c_oil->cc.bytecnt = sgreq.bytecnt; | |
1160 | c_oil->cc.wrong_if = sgreq.wrong_if; | |
3667e8a0 | 1161 | |
d62a17ae | 1162 | return; |
3667e8a0 | 1163 | } |