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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) { | |
01b9e3fd | 60 | frr_elevate_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 | ||
f0b009a4 DS |
78 | frr_elevate_privs(&pimd_privs) { |
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 DS |
192 | if (!(PIM_I_am_DR(pim_ifp))) { |
193 | struct channel_oil *c_oil; | |
194 | ||
195 | if (PIM_DEBUG_MROUTE_DETAIL) | |
196 | zlog_debug("%s: Interface is not the DR blackholing incoming traffic for %s", | |
197 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
198 | ||
199 | /* | |
200 | * We are not the DR, but we are still receiving packets | |
201 | * Let's blackhole those packets for the moment | |
202 | * As that they will be coming up to the cpu | |
203 | * and causing us to consider them. | |
204 | */ | |
205 | c_oil = pim_channel_oil_add(pim_ifp->pim, &sg, | |
206 | pim_ifp->mroute_vif_index); | |
207 | pim_mroute_add(c_oil, __PRETTY_FUNCTION__); | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
d62a17ae | 212 | up = pim_upstream_find_or_add(&sg, ifp, PIM_UPSTREAM_FLAG_MASK_FHR, |
213 | __PRETTY_FUNCTION__); | |
214 | if (!up) { | |
215 | if (PIM_DEBUG_MROUTE) { | |
216 | zlog_debug( | |
217 | "%s: Failure to add upstream information for %s", | |
218 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
219 | } | |
220 | return 0; | |
221 | } | |
c29a5806 | 222 | |
d62a17ae | 223 | /* |
224 | * I moved this debug till after the actual add because | |
225 | * I want to take advantage of the up->sg_str being filled in. | |
226 | */ | |
227 | if (PIM_DEBUG_MROUTE) { | |
228 | zlog_debug("%s: Adding a Route %s for WHOLEPKT consumption", | |
229 | __PRETTY_FUNCTION__, up->sg_str); | |
230 | } | |
8bfb8b67 | 231 | |
d62a17ae | 232 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); |
19b807ca | 233 | pim_upstream_keep_alive_timer_start(up, pim_ifp->pim->keep_alive_time); |
d62a17ae | 234 | |
235 | up->channel_oil->cc.pktcnt++; | |
236 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); | |
237 | // resolve mfcc_parent prior to mroute_add in channel_add_oif | |
957d93ea SP |
238 | if (up->rpf.source_nexthop.interface && |
239 | up->channel_oil->oil.mfcc_parent >= MAXVIFS) { | |
d62a17ae | 240 | int vif_index = 0; |
241 | vif_index = pim_if_find_vifindex_by_ifindex( | |
7cfc7bcf | 242 | pim_ifp->pim, |
d62a17ae | 243 | up->rpf.source_nexthop.interface->ifindex); |
244 | up->channel_oil->oil.mfcc_parent = vif_index; | |
245 | } | |
246 | pim_register_join(up); | |
59471fb8 | 247 | |
d62a17ae | 248 | return 0; |
e355e30f | 249 | } |
12e41d03 | 250 | |
d62a17ae | 251 | static int pim_mroute_msg_wholepkt(int fd, struct interface *ifp, |
252 | const char *buf) | |
e355e30f | 253 | { |
d62a17ae | 254 | struct pim_interface *pim_ifp; |
255 | struct prefix_sg sg; | |
256 | struct pim_rpf *rpg; | |
257 | const struct ip *ip_hdr; | |
258 | struct pim_upstream *up; | |
259 | ||
9b29ea95 DS |
260 | pim_ifp = ifp->info; |
261 | ||
d62a17ae | 262 | ip_hdr = (const struct ip *)buf; |
263 | ||
264 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
265 | sg.src = ip_hdr->ip_src; | |
266 | sg.grp = ip_hdr->ip_dst; | |
267 | ||
9b29ea95 | 268 | up = pim_upstream_find(pim_ifp->pim, &sg); |
d62a17ae | 269 | if (!up) { |
270 | struct prefix_sg star = sg; | |
271 | star.src.s_addr = INADDR_ANY; | |
272 | ||
9b29ea95 | 273 | up = pim_upstream_find(pim_ifp->pim, &star); |
d62a17ae | 274 | |
275 | if (up && PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(up->flags)) { | |
2002dcdb | 276 | up = pim_upstream_add(pim_ifp->pim, &sg, ifp, |
d62a17ae | 277 | PIM_UPSTREAM_FLAG_MASK_SRC_LHR, |
0885a9f1 | 278 | __PRETTY_FUNCTION__, NULL); |
d62a17ae | 279 | if (!up) { |
280 | if (PIM_DEBUG_MROUTE) | |
281 | zlog_debug( | |
282 | "%s: Unable to create upstream information for %s", | |
283 | __PRETTY_FUNCTION__, | |
284 | pim_str_sg_dump(&sg)); | |
285 | return 0; | |
286 | } | |
287 | pim_upstream_keep_alive_timer_start( | |
19b807ca | 288 | up, pim_ifp->pim->keep_alive_time); |
9b29ea95 | 289 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
1eca8576 DS |
290 | pim_upstream_switch(pim_ifp->pim, up, |
291 | PIM_UPSTREAM_JOINED); | |
d62a17ae | 292 | |
293 | if (PIM_DEBUG_MROUTE) | |
294 | zlog_debug("%s: Creating %s upstream on LHR", | |
295 | __PRETTY_FUNCTION__, up->sg_str); | |
296 | return 0; | |
297 | } | |
298 | if (PIM_DEBUG_MROUTE_DETAIL) { | |
299 | zlog_debug( | |
300 | "%s: Unable to find upstream channel WHOLEPKT%s", | |
301 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg)); | |
302 | } | |
303 | return 0; | |
304 | } | |
59471fb8 | 305 | |
957d93ea SP |
306 | if (!up->rpf.source_nexthop.interface) { |
307 | if (PIM_DEBUG_TRACE) | |
308 | zlog_debug("%s: up %s RPF is not present", | |
309 | __PRETTY_FUNCTION__, up->sg_str); | |
310 | return 0; | |
311 | } | |
312 | ||
d62a17ae | 313 | pim_ifp = up->rpf.source_nexthop.interface->info; |
998af219 | 314 | |
b575a12c | 315 | rpg = pim_ifp ? RP(pim_ifp->pim, sg.grp) : NULL; |
c8ae3ce8 | 316 | |
d62a17ae | 317 | if ((pim_rpf_addr_is_inaddr_none(rpg)) || (!pim_ifp) |
318 | || (!(PIM_I_am_DR(pim_ifp)))) { | |
319 | if (PIM_DEBUG_MROUTE) { | |
320 | zlog_debug("%s: Failed Check send packet", | |
321 | __PRETTY_FUNCTION__); | |
322 | } | |
323 | return 0; | |
324 | } | |
84366c7e | 325 | |
d62a17ae | 326 | /* |
327 | * If we've received a register suppress | |
328 | */ | |
329 | if (!up->t_rs_timer) { | |
6f439a70 | 330 | if (pim_is_grp_ssm(pim_ifp->pim, sg.grp)) { |
d62a17ae | 331 | if (PIM_DEBUG_PIM_REG) |
332 | zlog_debug( | |
333 | "%s register forward skipped as group is SSM", | |
334 | pim_str_sg_dump(&sg)); | |
335 | return 0; | |
336 | } | |
337 | pim_register_send((uint8_t *)buf + sizeof(struct ip), | |
338 | ntohs(ip_hdr->ip_len) - sizeof(struct ip), | |
339 | pim_ifp->primary_address, rpg, 0, up); | |
340 | } | |
341 | return 0; | |
e355e30f | 342 | } |
12e41d03 | 343 | |
d62a17ae | 344 | static int pim_mroute_msg_wrongvif(int fd, struct interface *ifp, |
345 | const struct igmpmsg *msg) | |
e355e30f | 346 | { |
d62a17ae | 347 | struct pim_ifchannel *ch; |
348 | struct pim_interface *pim_ifp; | |
349 | struct prefix_sg sg; | |
350 | ||
351 | memset(&sg, 0, sizeof(struct prefix_sg)); | |
352 | sg.src = msg->im_src; | |
353 | sg.grp = msg->im_dst; | |
354 | ||
355 | /* | |
356 | Send Assert(S,G) on iif as response to WRONGVIF kernel upcall. | |
357 | ||
358 | RFC 4601 4.8.2. PIM-SSM-Only Routers | |
359 | ||
360 | iif is the incoming interface of the packet. | |
361 | if (iif is in inherited_olist(S,G)) { | |
362 | send Assert(S,G) on iif | |
363 | } | |
364 | */ | |
365 | ||
366 | if (!ifp) { | |
367 | if (PIM_DEBUG_MROUTE) | |
368 | zlog_debug( | |
369 | "%s: WRONGVIF (S,G)=%s could not find input interface for input_vif_index=%d", | |
370 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
371 | msg->im_vif); | |
372 | return -1; | |
373 | } | |
12e41d03 | 374 | |
d62a17ae | 375 | pim_ifp = ifp->info; |
376 | if (!pim_ifp) { | |
377 | if (PIM_DEBUG_MROUTE) | |
378 | zlog_debug( | |
379 | "%s: WRONGVIF (S,G)=%s multicast not enabled on interface %s", | |
380 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
381 | ifp->name); | |
382 | return -2; | |
383 | } | |
c29a5806 | 384 | |
d62a17ae | 385 | ch = pim_ifchannel_find(ifp, &sg); |
386 | if (!ch) { | |
387 | struct prefix_sg star_g = sg; | |
388 | if (PIM_DEBUG_MROUTE) | |
389 | zlog_debug( | |
390 | "%s: WRONGVIF (S,G)=%s could not find channel on interface %s", | |
391 | __PRETTY_FUNCTION__, pim_str_sg_dump(&sg), | |
392 | ifp->name); | |
393 | ||
394 | star_g.src.s_addr = INADDR_ANY; | |
395 | ch = pim_ifchannel_find(ifp, &star_g); | |
396 | if (!ch) { | |
397 | if (PIM_DEBUG_MROUTE) | |
398 | zlog_debug( | |
399 | "%s: WRONGVIF (*,G)=%s could not find channel on interface %s", | |
400 | __PRETTY_FUNCTION__, | |
401 | pim_str_sg_dump(&star_g), ifp->name); | |
402 | return -3; | |
403 | } | |
404 | } | |
12e41d03 | 405 | |
d62a17ae | 406 | /* |
407 | RFC 4601: 4.6.1. (S,G) Assert Message State Machine | |
408 | ||
409 | Transitions from NoInfo State | |
410 | ||
411 | An (S,G) data packet arrives on interface I, AND | |
412 | CouldAssert(S,G,I)==TRUE An (S,G) data packet arrived on an | |
413 | downstream interface that is in our (S,G) outgoing interface | |
414 | list. We optimistically assume that we will be the assert | |
415 | winner for this (S,G), and so we transition to the "I am Assert | |
416 | Winner" state and perform Actions A1 (below), which will | |
417 | initiate the assert negotiation for (S,G). | |
418 | */ | |
419 | ||
420 | if (ch->ifassert_state != PIM_IFASSERT_NOINFO) { | |
421 | if (PIM_DEBUG_MROUTE) { | |
422 | zlog_debug( | |
423 | "%s: WRONGVIF (S,G)=%s channel is not on Assert NoInfo state for interface %s", | |
424 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
425 | } | |
426 | return -4; | |
427 | } | |
e355e30f | 428 | |
d62a17ae | 429 | if (!PIM_IF_FLAG_TEST_COULD_ASSERT(ch->flags)) { |
430 | if (PIM_DEBUG_MROUTE) { | |
431 | zlog_debug( | |
432 | "%s: WRONGVIF (S,G)=%s interface %s is not downstream for channel", | |
433 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
434 | } | |
435 | return -5; | |
436 | } | |
437 | ||
438 | if (assert_action_a1(ch)) { | |
439 | if (PIM_DEBUG_MROUTE) { | |
440 | zlog_debug( | |
441 | "%s: WRONGVIF (S,G)=%s assert_action_a1 failure on interface %s", | |
442 | __PRETTY_FUNCTION__, ch->sg_str, ifp->name); | |
443 | } | |
444 | return -6; | |
445 | } | |
e355e30f | 446 | |
d62a17ae | 447 | return 0; |
e355e30f DS |
448 | } |
449 | ||
d62a17ae | 450 | static int pim_mroute_msg_wrvifwhole(int fd, struct interface *ifp, |
451 | const char *buf) | |
08e1fe76 | 452 | { |
d62a17ae | 453 | const struct ip *ip_hdr = (const struct ip *)buf; |
454 | struct pim_interface *pim_ifp; | |
455 | struct pim_ifchannel *ch; | |
456 | struct pim_upstream *up; | |
457 | struct prefix_sg star_g; | |
458 | struct prefix_sg sg; | |
459 | struct channel_oil *oil; | |
460 | ||
fec883d9 DS |
461 | pim_ifp = ifp->info; |
462 | ||
d62a17ae | 463 | memset(&sg, 0, sizeof(struct prefix_sg)); |
464 | sg.src = ip_hdr->ip_src; | |
465 | sg.grp = ip_hdr->ip_dst; | |
466 | ||
467 | ch = pim_ifchannel_find(ifp, &sg); | |
468 | if (ch) { | |
469 | if (PIM_DEBUG_MROUTE) | |
470 | zlog_debug( | |
471 | "WRVIFWHOLE (S,G)=%s found ifchannel on interface %s", | |
472 | ch->sg_str, ifp->name); | |
473 | return -1; | |
474 | } | |
b7ddd2ec | 475 | |
d62a17ae | 476 | star_g = sg; |
477 | star_g.src.s_addr = INADDR_ANY; | |
b7ddd2ec | 478 | #if 0 |
0490c22d DS |
479 | ch = pim_ifchannel_find(ifp, &star_g); |
480 | if (ch) | |
481 | { | |
482 | if (PIM_DEBUG_MROUTE) | |
483 | zlog_debug ("WRVIFWHOLE (*,G)=%s found ifchannel on interface %s", | |
484 | pim_str_sg_dump (&star_g), ifp->name); | |
485 | return -1; | |
486 | } | |
5cd11e3c | 487 | #endif |
08e1fe76 | 488 | |
9b29ea95 | 489 | up = pim_upstream_find(pim_ifp->pim, &sg); |
d62a17ae | 490 | if (up) { |
491 | struct pim_upstream *parent; | |
492 | struct pim_nexthop source; | |
fec883d9 | 493 | struct pim_rpf *rpf = RP(pim_ifp->pim, sg.grp); |
d62a17ae | 494 | if (!rpf || !rpf->source_nexthop.interface) |
495 | return 0; | |
496 | ||
497 | /* | |
498 | * If we have received a WRVIFWHOLE and are at this | |
499 | * point, we could be receiving the packet on the *,G | |
500 | * tree, let's check and if so we can safely drop | |
501 | * it. | |
502 | */ | |
9b29ea95 | 503 | parent = pim_upstream_find(pim_ifp->pim, &star_g); |
d62a17ae | 504 | if (parent && parent->rpf.source_nexthop.interface == ifp) |
505 | return 0; | |
506 | ||
507 | pim_ifp = rpf->source_nexthop.interface->info; | |
508 | ||
509 | memset(&source, 0, sizeof(source)); | |
510 | /* | |
511 | * If we are the fhr that means we are getting a callback during | |
512 | * the pimreg period, so I believe we can ignore this packet | |
513 | */ | |
514 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) { | |
515 | // No if channel, but upstream we are at the RP. | |
d9c9a9ee | 516 | if (pim_nexthop_lookup(pim_ifp->pim, &source, |
ade155e1 | 517 | up->upstream_register, 0)) { |
d62a17ae | 518 | pim_register_stop_send(source.interface, &sg, |
519 | pim_ifp->primary_address, | |
520 | up->upstream_register); | |
df766618 DS |
521 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
522 | } | |
d62a17ae | 523 | if (!up->channel_oil) |
524 | up->channel_oil = pim_channel_oil_add( | |
611925dc DS |
525 | pim_ifp->pim, &sg, |
526 | pim_ifp->mroute_vif_index); | |
9b29ea95 | 527 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
d62a17ae | 528 | if (!up->channel_oil->installed) |
529 | pim_mroute_add(up->channel_oil, | |
530 | __PRETTY_FUNCTION__); | |
d62a17ae | 531 | } else { |
d9c9a9ee DS |
532 | if (I_am_RP(pim_ifp->pim, up->sg.grp)) { |
533 | if (pim_nexthop_lookup(pim_ifp->pim, &source, | |
ade155e1 DS |
534 | up->upstream_register, |
535 | 0)) | |
d62a17ae | 536 | pim_register_stop_send( |
537 | source.interface, &sg, | |
538 | pim_ifp->primary_address, | |
539 | up->upstream_register); | |
540 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
541 | } | |
542 | pim_upstream_keep_alive_timer_start( | |
19b807ca | 543 | up, pim_ifp->pim->keep_alive_time); |
9b29ea95 | 544 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
d62a17ae | 545 | pim_mroute_msg_wholepkt(fd, ifp, buf); |
546 | } | |
547 | return 0; | |
548 | } | |
8e38a2cf | 549 | |
d62a17ae | 550 | pim_ifp = ifp->info; |
611925dc | 551 | oil = pim_channel_oil_add(pim_ifp->pim, &sg, pim_ifp->mroute_vif_index); |
d62a17ae | 552 | if (!oil->installed) |
553 | pim_mroute_add(oil, __PRETTY_FUNCTION__); | |
554 | if (pim_if_connected_to_source(ifp, sg.src)) { | |
2002dcdb DS |
555 | up = pim_upstream_add(pim_ifp->pim, &sg, ifp, |
556 | PIM_UPSTREAM_FLAG_MASK_FHR, | |
0885a9f1 | 557 | __PRETTY_FUNCTION__, NULL); |
d62a17ae | 558 | if (!up) { |
559 | if (PIM_DEBUG_MROUTE) | |
560 | zlog_debug( | |
561 | "%s: WRONGVIF%s unable to create upstream on interface", | |
562 | pim_str_sg_dump(&sg), ifp->name); | |
563 | return -2; | |
564 | } | |
565 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); | |
996c9314 LB |
566 | pim_upstream_keep_alive_timer_start( |
567 | up, pim_ifp->pim->keep_alive_time); | |
d62a17ae | 568 | up->channel_oil = oil; |
569 | up->channel_oil->cc.pktcnt++; | |
570 | pim_register_join(up); | |
9b29ea95 | 571 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
d62a17ae | 572 | |
573 | // Send the packet to the RP | |
574 | pim_mroute_msg_wholepkt(fd, ifp, buf); | |
575 | } | |
08e1fe76 | 576 | |
d62a17ae | 577 | return 0; |
08e1fe76 DS |
578 | } |
579 | ||
405d6357 | 580 | static int pim_mroute_msg(struct pim_instance *pim, const char *buf, |
90450a3d | 581 | int buf_size, ifindex_t ifindex) |
e355e30f | 582 | { |
d62a17ae | 583 | struct interface *ifp; |
584 | struct pim_interface *pim_ifp; | |
585 | const struct ip *ip_hdr; | |
586 | const struct igmpmsg *msg; | |
587 | char ip_src_str[INET_ADDRSTRLEN] = ""; | |
588 | char ip_dst_str[INET_ADDRSTRLEN] = ""; | |
589 | char src_str[INET_ADDRSTRLEN] = "<src?>"; | |
590 | char grp_str[INET_ADDRSTRLEN] = "<grp?>"; | |
591 | struct in_addr ifaddr; | |
592 | struct igmp_sock *igmp; | |
593 | ||
594 | ip_hdr = (const struct ip *)buf; | |
595 | ||
596 | if (ip_hdr->ip_p == IPPROTO_IGMP) { | |
597 | ||
598 | /* We have the IP packet but we do not know which interface this | |
599 | * packet was | |
600 | * received on. Find the interface that is on the same subnet as | |
601 | * the source | |
602 | * of the IP packet. | |
603 | */ | |
90450a3d | 604 | ifp = if_lookup_by_index(ifindex, pim->vrf_id); |
d62a17ae | 605 | |
1ef8c24e | 606 | if (!ifp || !ifp->info) |
d62a17ae | 607 | return 0; |
90450a3d | 608 | |
d62a17ae | 609 | pim_ifp = ifp->info; |
610 | ifaddr = pim_find_primary_addr(ifp); | |
611 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, | |
612 | ifaddr); | |
613 | ||
614 | if (PIM_DEBUG_MROUTE) { | |
615 | pim_inet4_dump("<src?>", ip_hdr->ip_src, ip_src_str, | |
616 | sizeof(ip_src_str)); | |
617 | pim_inet4_dump("<dst?>", ip_hdr->ip_dst, ip_dst_str, | |
618 | sizeof(ip_dst_str)); | |
619 | ||
620 | zlog_warn( | |
7c2bfc2a DS |
621 | "%s(%s): igmp kernel upcall on %s(%p) for %s -> %s", |
622 | __PRETTY_FUNCTION__, pim->vrf->name, ifp->name, | |
623 | igmp, ip_src_str, ip_dst_str); | |
d62a17ae | 624 | } |
625 | if (igmp) | |
626 | pim_igmp_packet(igmp, (char *)buf, buf_size); | |
627 | ||
628 | } else if (ip_hdr->ip_p) { | |
629 | if (PIM_DEBUG_MROUTE_DETAIL) { | |
630 | pim_inet4_dump("<src?>", ip_hdr->ip_src, src_str, | |
631 | sizeof(src_str)); | |
632 | pim_inet4_dump("<grp?>", ip_hdr->ip_dst, grp_str, | |
633 | sizeof(grp_str)); | |
634 | zlog_debug( | |
635 | "%s: no kernel upcall proto=%d src: %s dst: %s msg_size=%d", | |
636 | __PRETTY_FUNCTION__, ip_hdr->ip_p, src_str, | |
637 | grp_str, buf_size); | |
638 | } | |
639 | ||
640 | } else { | |
641 | msg = (const struct igmpmsg *)buf; | |
642 | ||
7cfc7bcf | 643 | ifp = pim_if_find_by_vif_index(pim, msg->im_vif); |
d62a17ae | 644 | |
645 | if (!ifp) | |
646 | return 0; | |
647 | if (PIM_DEBUG_MROUTE) { | |
648 | pim_inet4_dump("<src?>", msg->im_src, src_str, | |
649 | sizeof(src_str)); | |
650 | pim_inet4_dump("<grp?>", msg->im_dst, grp_str, | |
651 | sizeof(grp_str)); | |
652 | zlog_warn( | |
653 | "%s: pim kernel upcall %s type=%d ip_p=%d from fd=%d for (S,G)=(%s,%s) on %s vifi=%d size=%d", | |
654 | __PRETTY_FUNCTION__, | |
655 | igmpmsgtype2str[msg->im_msgtype], | |
405d6357 DS |
656 | msg->im_msgtype, ip_hdr->ip_p, |
657 | pim->mroute_socket, src_str, grp_str, ifp->name, | |
658 | msg->im_vif, buf_size); | |
d62a17ae | 659 | } |
660 | ||
661 | switch (msg->im_msgtype) { | |
662 | case IGMPMSG_WRONGVIF: | |
405d6357 DS |
663 | return pim_mroute_msg_wrongvif(pim->mroute_socket, ifp, |
664 | msg); | |
d62a17ae | 665 | break; |
666 | case IGMPMSG_NOCACHE: | |
405d6357 DS |
667 | return pim_mroute_msg_nocache(pim->mroute_socket, ifp, |
668 | msg); | |
d62a17ae | 669 | break; |
670 | case IGMPMSG_WHOLEPKT: | |
405d6357 | 671 | return pim_mroute_msg_wholepkt(pim->mroute_socket, ifp, |
d62a17ae | 672 | (const char *)msg); |
673 | break; | |
674 | case IGMPMSG_WRVIFWHOLE: | |
405d6357 DS |
675 | return pim_mroute_msg_wrvifwhole( |
676 | pim->mroute_socket, ifp, (const char *)msg); | |
d62a17ae | 677 | break; |
678 | default: | |
679 | break; | |
680 | } | |
681 | } | |
12e41d03 | 682 | |
d62a17ae | 683 | return 0; |
12e41d03 DL |
684 | } |
685 | ||
12e41d03 DL |
686 | static int mroute_read(struct thread *t) |
687 | { | |
8ea5d944 | 688 | struct pim_instance *pim; |
d62a17ae | 689 | static long long count; |
690 | char buf[10000]; | |
691 | int result = 0; | |
692 | int cont = 1; | |
d62a17ae | 693 | int rd; |
90450a3d | 694 | ifindex_t ifindex; |
8ea5d944 | 695 | pim = THREAD_ARG(t); |
d62a17ae | 696 | |
697 | while (cont) { | |
90450a3d DS |
698 | rd = pim_socket_recvfromto(pim->mroute_socket, (uint8_t *)buf, |
699 | sizeof(buf), NULL, NULL, NULL, NULL, | |
700 | &ifindex); | |
61e99c94 | 701 | if (rd <= 0) { |
d62a17ae | 702 | if (errno == EINTR) |
703 | continue; | |
704 | if (errno == EWOULDBLOCK || errno == EAGAIN) | |
705 | break; | |
706 | ||
707 | if (PIM_DEBUG_MROUTE) | |
708 | zlog_warn( | |
61e99c94 | 709 | "%s: failure reading rd=%d: fd=%d: errno=%d: %s", |
8ea5d944 DS |
710 | __PRETTY_FUNCTION__, rd, |
711 | pim->mroute_socket, errno, | |
d62a17ae | 712 | safe_strerror(errno)); |
713 | goto done; | |
714 | } | |
715 | ||
90450a3d | 716 | result = pim_mroute_msg(pim, buf, rd, ifindex); |
d62a17ae | 717 | |
718 | count++; | |
75373cca | 719 | if (count % router->packet_process == 0) |
d62a17ae | 720 | cont = 0; |
721 | } | |
722 | /* Keep reading */ | |
723 | done: | |
8ea5d944 | 724 | mroute_read_on(pim); |
12e41d03 | 725 | |
d62a17ae | 726 | return result; |
12e41d03 DL |
727 | } |
728 | ||
8ea5d944 | 729 | static void mroute_read_on(struct pim_instance *pim) |
12e41d03 | 730 | { |
36417fcc | 731 | thread_add_read(router->master, mroute_read, pim, pim->mroute_socket, |
8ea5d944 | 732 | &pim->thread); |
12e41d03 DL |
733 | } |
734 | ||
8ea5d944 | 735 | static void mroute_read_off(struct pim_instance *pim) |
12e41d03 | 736 | { |
8ea5d944 | 737 | THREAD_OFF(pim->thread); |
12e41d03 DL |
738 | } |
739 | ||
6beed987 | 740 | int pim_mroute_socket_enable(struct pim_instance *pim) |
12e41d03 | 741 | { |
d62a17ae | 742 | int fd; |
12e41d03 | 743 | |
01b9e3fd | 744 | frr_elevate_privs(&pimd_privs) { |
12e41d03 | 745 | |
01b9e3fd | 746 | fd = socket(AF_INET, SOCK_RAW, IPPROTO_IGMP); |
12e41d03 | 747 | |
01b9e3fd DL |
748 | if (fd < 0) { |
749 | zlog_warn("Could not create mroute socket: errno=%d: %s", | |
750 | errno, | |
751 | safe_strerror(errno)); | |
752 | return -2; | |
753 | } | |
e691f179 | 754 | |
466e4e5b | 755 | #ifdef SO_BINDTODEVICE |
01b9e3fd | 756 | if (pim->vrf->vrf_id != VRF_DEFAULT |
633fc9b1 DL |
757 | && setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, |
758 | pim->vrf->name, strlen(pim->vrf->name))) { | |
01b9e3fd DL |
759 | zlog_warn("Could not setsockopt SO_BINDTODEVICE: %s", |
760 | safe_strerror(errno)); | |
761 | close(fd); | |
762 | return -3; | |
763 | } | |
466e4e5b | 764 | #endif |
90450a3d | 765 | |
01b9e3fd | 766 | } |
12e41d03 | 767 | |
cdbfaec5 DS |
768 | pim->mroute_socket = fd; |
769 | if (pim_mroute_set(pim, 1)) { | |
d62a17ae | 770 | zlog_warn( |
771 | "Could not enable mroute on socket fd=%d: errno=%d: %s", | |
772 | fd, errno, safe_strerror(errno)); | |
773 | close(fd); | |
cdbfaec5 | 774 | pim->mroute_socket = -1; |
d62a17ae | 775 | return -3; |
776 | } | |
12e41d03 | 777 | |
6beed987 | 778 | pim->mroute_socket_creation = pim_time_monotonic_sec(); |
b45cefcb | 779 | |
8ea5d944 | 780 | mroute_read_on(pim); |
12e41d03 | 781 | |
d62a17ae | 782 | return 0; |
12e41d03 DL |
783 | } |
784 | ||
6beed987 | 785 | int pim_mroute_socket_disable(struct pim_instance *pim) |
12e41d03 | 786 | { |
cdbfaec5 | 787 | if (pim_mroute_set(pim, 0)) { |
d62a17ae | 788 | zlog_warn( |
789 | "Could not disable mroute on socket fd=%d: errno=%d: %s", | |
405d6357 | 790 | pim->mroute_socket, errno, safe_strerror(errno)); |
d62a17ae | 791 | return -2; |
792 | } | |
793 | ||
6beed987 | 794 | if (close(pim->mroute_socket)) { |
d62a17ae | 795 | zlog_warn("Failure closing mroute socket: fd=%d errno=%d: %s", |
405d6357 | 796 | pim->mroute_socket, errno, safe_strerror(errno)); |
d62a17ae | 797 | return -3; |
798 | } | |
799 | ||
8ea5d944 | 800 | mroute_read_off(pim); |
6beed987 | 801 | pim->mroute_socket = -1; |
d62a17ae | 802 | |
803 | return 0; | |
12e41d03 DL |
804 | } |
805 | ||
806 | /* | |
807 | For each network interface (e.g., physical or a virtual tunnel) that | |
808 | would be used for multicast forwarding, a corresponding multicast | |
809 | interface must be added to the kernel. | |
810 | */ | |
d62a17ae | 811 | int pim_mroute_add_vif(struct interface *ifp, struct in_addr ifaddr, |
812 | unsigned char flags) | |
12e41d03 | 813 | { |
d62a17ae | 814 | struct pim_interface *pim_ifp = ifp->info; |
815 | struct vifctl vc; | |
816 | int err; | |
12e41d03 | 817 | |
08f4f901 | 818 | if (PIM_DEBUG_MROUTE) |
d62fd596 | 819 | zlog_debug("%s: Add Vif %d (%s[%s])", __PRETTY_FUNCTION__, |
996c9314 LB |
820 | pim_ifp->mroute_vif_index, ifp->name, |
821 | pim_ifp->pim->vrf->name); | |
08f4f901 | 822 | |
d62a17ae | 823 | memset(&vc, 0, sizeof(vc)); |
824 | vc.vifc_vifi = pim_ifp->mroute_vif_index; | |
b3f2bf7c | 825 | #ifdef VIFF_USE_IFINDEX |
d62a17ae | 826 | vc.vifc_lcl_ifindex = ifp->ifindex; |
b3f2bf7c | 827 | #else |
d62a17ae | 828 | if (ifaddr.s_addr == INADDR_ANY) { |
829 | zlog_warn( | |
830 | "%s: unnumbered interfaces are not supported on this platform", | |
831 | __PRETTY_FUNCTION__); | |
832 | return -1; | |
833 | } | |
834 | memcpy(&vc.vifc_lcl_addr, &ifaddr, sizeof(vc.vifc_lcl_addr)); | |
b3f2bf7c | 835 | #endif |
d62a17ae | 836 | vc.vifc_flags = flags; |
837 | vc.vifc_threshold = PIM_MROUTE_MIN_TTL; | |
838 | vc.vifc_rate_limit = 0; | |
839 | ||
840 | #ifdef PIM_DVMRP_TUNNEL | |
841 | if (vc.vifc_flags & VIFF_TUNNEL) { | |
842 | memcpy(&vc.vifc_rmt_addr, &vif_remote_addr, | |
843 | sizeof(vc.vifc_rmt_addr)); | |
844 | } | |
12e41d03 DL |
845 | #endif |
846 | ||
ea3d967b | 847 | err = setsockopt(pim_ifp->pim->mroute_socket, IPPROTO_IP, MRT_ADD_VIF, |
d62a17ae | 848 | (void *)&vc, sizeof(vc)); |
849 | if (err) { | |
850 | char ifaddr_str[INET_ADDRSTRLEN]; | |
12e41d03 | 851 | |
d62a17ae | 852 | pim_inet4_dump("<ifaddr?>", ifaddr, ifaddr_str, |
853 | sizeof(ifaddr_str)); | |
12e41d03 | 854 | |
d62a17ae | 855 | zlog_warn( |
08f4f901 | 856 | "%s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_ADD_VIF,vif_index=%d,ifaddr=%s,flag=%d): errno=%d: %s", |
996c9314 LB |
857 | __PRETTY_FUNCTION__, pim_ifp->pim->mroute_socket, |
858 | ifp->ifindex, ifaddr_str, flags, errno, | |
859 | safe_strerror(errno)); | |
d62a17ae | 860 | return -2; |
861 | } | |
12e41d03 | 862 | |
d62a17ae | 863 | return 0; |
12e41d03 DL |
864 | } |
865 | ||
ea3d967b | 866 | int pim_mroute_del_vif(struct interface *ifp) |
12e41d03 | 867 | { |
ea3d967b | 868 | struct pim_interface *pim_ifp = ifp->info; |
d62a17ae | 869 | struct vifctl vc; |
870 | int err; | |
871 | ||
ea3d967b | 872 | if (PIM_DEBUG_MROUTE) |
996c9314 LB |
873 | zlog_debug("%s: Del Vif %d (%s[%s])", __PRETTY_FUNCTION__, |
874 | pim_ifp->mroute_vif_index, ifp->name, | |
875 | pim_ifp->pim->vrf->name); | |
12e41d03 | 876 | |
d62a17ae | 877 | memset(&vc, 0, sizeof(vc)); |
ea3d967b | 878 | vc.vifc_vifi = pim_ifp->mroute_vif_index; |
d62a17ae | 879 | |
ea3d967b | 880 | err = setsockopt(pim_ifp->pim->mroute_socket, IPPROTO_IP, MRT_DEL_VIF, |
d62a17ae | 881 | (void *)&vc, sizeof(vc)); |
882 | if (err) { | |
883 | zlog_warn( | |
884 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_DEL_VIF,vif_index=%d): errno=%d: %s", | |
ea3d967b DS |
885 | __FILE__, __PRETTY_FUNCTION__, |
886 | pim_ifp->pim->mroute_socket, pim_ifp->mroute_vif_index, | |
887 | errno, safe_strerror(errno)); | |
d62a17ae | 888 | return -2; |
889 | } | |
12e41d03 | 890 | |
d62a17ae | 891 | return 0; |
12e41d03 DL |
892 | } |
893 | ||
6a78764e | 894 | int pim_mroute_add(struct channel_oil *c_oil, const char *name) |
12e41d03 | 895 | { |
9a0f71c9 | 896 | struct pim_instance *pim = c_oil->pim; |
d62a17ae | 897 | int err; |
898 | int orig = 0; | |
899 | int orig_iif_vif = 0; | |
76e4825a AK |
900 | struct pim_interface *pim_reg_ifp; |
901 | int orig_pimreg_ttl; | |
902 | bool pimreg_ttl_reset = false; | |
37c3fd98 AK |
903 | struct pim_interface *vxlan_ifp; |
904 | int orig_term_ttl; | |
905 | bool orig_term_ttl_reset = false; | |
d62a17ae | 906 | |
856e863f DS |
907 | pim->mroute_add_last = pim_time_monotonic_sec(); |
908 | ++pim->mroute_add_events; | |
d62a17ae | 909 | |
910 | /* Do not install route if incoming interface is undefined. */ | |
911 | if (c_oil->oil.mfcc_parent >= MAXVIFS) { | |
912 | if (PIM_DEBUG_MROUTE) { | |
913 | char buf[1000]; | |
914 | zlog_debug( | |
915 | "%s(%s) %s Attempting to add vifi that is invalid to mroute table", | |
916 | __PRETTY_FUNCTION__, name, | |
917 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); | |
918 | } | |
919 | return -2; | |
920 | } | |
d3aded99 | 921 | |
d62a17ae | 922 | /* The linux kernel *expects* the incoming |
923 | * vif to be part of the outgoing list | |
924 | * in the case of a (*,G). | |
925 | */ | |
926 | if (c_oil->oil.mfcc_origin.s_addr == INADDR_ANY) { | |
927 | orig = c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent]; | |
928 | c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent] = 1; | |
929 | } | |
d3aded99 | 930 | |
76e4825a AK |
931 | if (c_oil->up) { |
932 | /* suppress pimreg in the OIL if the mroute is not supposed to | |
933 | * trigger register encapsulated data | |
934 | */ | |
935 | if (PIM_UPSTREAM_FLAG_TEST_NO_PIMREG_DATA(c_oil->up->flags)) { | |
936 | pim_reg_ifp = pim->regiface->info; | |
937 | orig_pimreg_ttl = | |
938 | c_oil->oil.mfcc_ttls[pim_reg_ifp->mroute_vif_index]; | |
939 | c_oil->oil.mfcc_ttls[pim_reg_ifp->mroute_vif_index] = 0; | |
940 | /* remember to flip it back after MFC programming */ | |
941 | pimreg_ttl_reset = true; | |
942 | } | |
37c3fd98 AK |
943 | |
944 | vxlan_ifp = pim_vxlan_get_term_ifp(pim); | |
945 | /* 1. vxlan termination device must never be added to the | |
946 | * origination mroute (and that can actually happen because | |
947 | * of XG inheritance from the termination mroute) otherwise | |
948 | * traffic will end up looping. | |
949 | * 2. vxlan termination device should be removed from the non-DF | |
950 | * to prevent duplicates to the overlay rxer | |
951 | */ | |
952 | if (vxlan_ifp && | |
953 | (PIM_UPSTREAM_FLAG_TEST_SRC_VXLAN_ORIG(c_oil->up->flags) || | |
954 | PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(c_oil->up->flags))) { | |
955 | orig_term_ttl_reset = true; | |
956 | orig_term_ttl = | |
957 | c_oil->oil.mfcc_ttls[vxlan_ifp->mroute_vif_index]; | |
958 | c_oil->oil.mfcc_ttls[vxlan_ifp->mroute_vif_index] = 0; | |
959 | } | |
76e4825a AK |
960 | } |
961 | ||
d62a17ae | 962 | /* |
963 | * If we have an unresolved cache entry for the S,G | |
964 | * it is owned by the pimreg for the incoming IIF | |
965 | * So set pimreg as the IIF temporarily to cause | |
966 | * the packets to be forwarded. Then set it | |
967 | * to the correct IIF afterwords. | |
968 | */ | |
969 | if (!c_oil->installed && c_oil->oil.mfcc_origin.s_addr != INADDR_ANY | |
970 | && c_oil->oil.mfcc_parent != 0) { | |
971 | orig_iif_vif = c_oil->oil.mfcc_parent; | |
972 | c_oil->oil.mfcc_parent = 0; | |
973 | } | |
856e863f | 974 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, MRT_ADD_MFC, |
d62a17ae | 975 | &c_oil->oil, sizeof(c_oil->oil)); |
976 | ||
977 | if (!err && !c_oil->installed | |
978 | && c_oil->oil.mfcc_origin.s_addr != INADDR_ANY | |
979 | && orig_iif_vif != 0) { | |
980 | c_oil->oil.mfcc_parent = orig_iif_vif; | |
856e863f | 981 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, MRT_ADD_MFC, |
d62a17ae | 982 | &c_oil->oil, sizeof(c_oil->oil)); |
983 | } | |
0365f56b | 984 | |
d62a17ae | 985 | if (c_oil->oil.mfcc_origin.s_addr == INADDR_ANY) |
986 | c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent] = orig; | |
d3aded99 | 987 | |
76e4825a AK |
988 | if (pimreg_ttl_reset) |
989 | c_oil->oil.mfcc_ttls[pim_reg_ifp->mroute_vif_index] = | |
990 | orig_pimreg_ttl; | |
37c3fd98 AK |
991 | |
992 | if (orig_term_ttl_reset) | |
993 | c_oil->oil.mfcc_ttls[vxlan_ifp->mroute_vif_index] = | |
994 | orig_term_ttl; | |
995 | ||
d62a17ae | 996 | if (err) { |
997 | zlog_warn( | |
998 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_ADD_MFC): errno=%d: %s", | |
856e863f | 999 | __FILE__, __PRETTY_FUNCTION__, pim->mroute_socket, |
d62a17ae | 1000 | errno, safe_strerror(errno)); |
1001 | return -2; | |
1002 | } | |
12e41d03 | 1003 | |
d62a17ae | 1004 | if (PIM_DEBUG_MROUTE) { |
1005 | char buf[1000]; | |
996c9314 LB |
1006 | zlog_debug("%s(%s), vrf %s Added Route: %s", |
1007 | __PRETTY_FUNCTION__, name, pim->vrf->name, | |
d62a17ae | 1008 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); |
1009 | } | |
6a78764e | 1010 | |
d62a17ae | 1011 | c_oil->installed = 1; |
e7cd85bd SP |
1012 | c_oil->mroute_creation = pim_time_monotonic_sec(); |
1013 | ||
d62a17ae | 1014 | return 0; |
12e41d03 DL |
1015 | } |
1016 | ||
d62a17ae | 1017 | int pim_mroute_del(struct channel_oil *c_oil, const char *name) |
12e41d03 | 1018 | { |
9a0f71c9 | 1019 | struct pim_instance *pim = c_oil->pim; |
d62a17ae | 1020 | int err; |
1021 | ||
856e863f DS |
1022 | pim->mroute_del_last = pim_time_monotonic_sec(); |
1023 | ++pim->mroute_del_events; | |
d62a17ae | 1024 | |
1025 | if (!c_oil->installed) { | |
1026 | if (PIM_DEBUG_MROUTE) { | |
1027 | char buf[1000]; | |
1028 | zlog_debug( | |
1029 | "%s %s: vifi %d for route is %s not installed, do not need to send del req. ", | |
1030 | __FILE__, __PRETTY_FUNCTION__, | |
1031 | c_oil->oil.mfcc_parent, | |
1032 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); | |
1033 | } | |
1034 | return -2; | |
1035 | } | |
12e41d03 | 1036 | |
856e863f | 1037 | err = setsockopt(pim->mroute_socket, IPPROTO_IP, MRT_DEL_MFC, |
d62a17ae | 1038 | &c_oil->oil, sizeof(c_oil->oil)); |
1039 | if (err) { | |
1040 | if (PIM_DEBUG_MROUTE) | |
1041 | zlog_warn( | |
1042 | "%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_DEL_MFC): errno=%d: %s", | |
1043 | __FILE__, __PRETTY_FUNCTION__, | |
856e863f | 1044 | pim->mroute_socket, errno, |
d62a17ae | 1045 | safe_strerror(errno)); |
1046 | return -2; | |
1047 | } | |
429a291b | 1048 | |
d62a17ae | 1049 | if (PIM_DEBUG_MROUTE) { |
1050 | char buf[1000]; | |
996c9314 LB |
1051 | zlog_debug("%s(%s), vrf %s Deleted Route: %s", |
1052 | __PRETTY_FUNCTION__, name, pim->vrf->name, | |
d62fd596 | 1053 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); |
d62a17ae | 1054 | } |
781a1745 | 1055 | |
d62a17ae | 1056 | // Reset kernel installed flag |
1057 | c_oil->installed = 0; | |
58302dc7 | 1058 | |
d62a17ae | 1059 | return 0; |
12e41d03 | 1060 | } |
3667e8a0 | 1061 | |
d62a17ae | 1062 | void pim_mroute_update_counters(struct channel_oil *c_oil) |
3667e8a0 | 1063 | { |
9a0f71c9 | 1064 | struct pim_instance *pim = c_oil->pim; |
d62a17ae | 1065 | struct sioc_sg_req sgreq; |
1066 | ||
1067 | c_oil->cc.oldpktcnt = c_oil->cc.pktcnt; | |
1068 | c_oil->cc.oldbytecnt = c_oil->cc.bytecnt; | |
1069 | c_oil->cc.oldwrong_if = c_oil->cc.wrong_if; | |
1070 | ||
1071 | if (!c_oil->installed) { | |
19b807ca | 1072 | c_oil->cc.lastused = 100 * pim->keep_alive_time; |
d62a17ae | 1073 | if (PIM_DEBUG_MROUTE) { |
1074 | struct prefix_sg sg; | |
1075 | ||
1076 | sg.src = c_oil->oil.mfcc_origin; | |
1077 | sg.grp = c_oil->oil.mfcc_mcastgrp; | |
1078 | if (PIM_DEBUG_MROUTE) | |
1079 | zlog_debug( | |
41714081 | 1080 | "Channel%s is not installed no need to collect data from kernel", |
d62a17ae | 1081 | pim_str_sg_dump(&sg)); |
1082 | } | |
1083 | return; | |
c7b1183f | 1084 | } |
c7b1183f | 1085 | |
d62a17ae | 1086 | memset(&sgreq, 0, sizeof(sgreq)); |
1087 | sgreq.src = c_oil->oil.mfcc_origin; | |
1088 | sgreq.grp = c_oil->oil.mfcc_mcastgrp; | |
1089 | ||
1090 | pim_zlookup_sg_statistics(c_oil); | |
856e863f | 1091 | if (ioctl(pim->mroute_socket, SIOCGETSGCNT, &sgreq)) { |
d62a17ae | 1092 | if (PIM_DEBUG_MROUTE) { |
1093 | struct prefix_sg sg; | |
1094 | ||
1095 | sg.src = c_oil->oil.mfcc_origin; | |
1096 | sg.grp = c_oil->oil.mfcc_mcastgrp; | |
1097 | ||
1098 | zlog_warn( | |
41714081 | 1099 | "ioctl(SIOCGETSGCNT=%lu) failure for (S,G)=%s: errno=%d: %s", |
d62a17ae | 1100 | (unsigned long)SIOCGETSGCNT, |
1101 | pim_str_sg_dump(&sg), errno, | |
1102 | safe_strerror(errno)); | |
1103 | } | |
1104 | return; | |
c7b1183f | 1105 | } |
3667e8a0 | 1106 | |
d62a17ae | 1107 | c_oil->cc.pktcnt = sgreq.pktcnt; |
1108 | c_oil->cc.bytecnt = sgreq.bytecnt; | |
1109 | c_oil->cc.wrong_if = sgreq.wrong_if; | |
3667e8a0 | 1110 | |
d62a17ae | 1111 | return; |
3667e8a0 | 1112 | } |