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12e41d03 DL |
1 | /* |
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 | |
16 | along with this program; see the file COPYING; if not, write to the | |
17 | Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
18 | MA 02110-1301 USA | |
12e41d03 DL |
19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | #include "log.h" | |
23 | #include "privs.h" | |
744d91b3 | 24 | #include "if.h" |
065bee4b | 25 | #include "prefix.h" |
dfe43e25 DW |
26 | #include "vty.h" |
27 | #include "plist.h" | |
12e41d03 DL |
28 | |
29 | #include "pimd.h" | |
8e38a2cf | 30 | #include "pim_rpf.h" |
12e41d03 | 31 | #include "pim_mroute.h" |
37653d4f | 32 | #include "pim_oil.h" |
12e41d03 DL |
33 | #include "pim_str.h" |
34 | #include "pim_time.h" | |
35 | #include "pim_iface.h" | |
36 | #include "pim_macro.h" | |
c8ae3ce8 | 37 | #include "pim_rp.h" |
59471fb8 | 38 | #include "pim_oil.h" |
998af219 | 39 | #include "pim_register.h" |
56638739 | 40 | #include "pim_ifchannel.h" |
e3be0432 | 41 | #include "pim_zlookup.h" |
15a5dafe | 42 | #include "pim_ssm.h" |
12e41d03 DL |
43 | |
44 | /* GLOBAL VARS */ | |
7a90f85c DS |
45 | static struct thread *qpim_mroute_socket_reader = NULL; |
46 | ||
12e41d03 DL |
47 | static void mroute_read_on(void); |
48 | ||
49 | static int pim_mroute_set(int fd, int enable) | |
50 | { | |
51 | int err; | |
52 | int opt = enable ? MRT_INIT : MRT_DONE; | |
53 | socklen_t opt_len = sizeof(opt); | |
4f7c4a76 | 54 | int rcvbuf = 1024 * 1024 * 8; |
6806e04d | 55 | long flags; |
12e41d03 DL |
56 | |
57 | err = setsockopt(fd, IPPROTO_IP, opt, &opt, opt_len); | |
58 | if (err) { | |
12e41d03 DL |
59 | zlog_warn("%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,%s=%d): errno=%d: %s", |
60 | __FILE__, __PRETTY_FUNCTION__, | |
3d7765d7 | 61 | fd, enable ? "MRT_INIT" : "MRT_DONE", opt, errno, safe_strerror(errno)); |
12e41d03 DL |
62 | return -1; |
63 | } | |
64 | ||
4f7c4a76 DS |
65 | err = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(rcvbuf)); |
66 | if (err) { | |
67 | zlog_warn("%s: failure: setsockopt(fd=%d, SOL_SOCKET, %d): errno=%d: %s", | |
68 | __PRETTY_FUNCTION__, fd, rcvbuf, errno, safe_strerror(errno)); | |
69 | } | |
70 | ||
6806e04d DS |
71 | flags = fcntl(fd, F_GETFL, 0); |
72 | if (flags < 0) | |
73 | { | |
74 | zlog_warn("Could not get flags on socket fd:%d %d %s", | |
75 | fd, errno, safe_strerror(errno)); | |
76 | close (fd); | |
77 | return -1; | |
78 | } | |
79 | if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) | |
80 | { | |
81 | zlog_warn("Could not set O_NONBLOCK on socket fd:%d %d %s", | |
82 | fd, errno, safe_strerror(errno)); | |
83 | close(fd); | |
84 | return -1; | |
85 | } | |
86 | ||
87243934 DS |
87 | if (enable) |
88 | { | |
77b7d90b | 89 | #if defined linux |
87243934 DS |
90 | int upcalls = IGMPMSG_WRVIFWHOLE; |
91 | opt = MRT_PIM; | |
92 | ||
93 | err = setsockopt (fd, IPPROTO_IP, opt, &upcalls, sizeof (upcalls)); | |
94 | if (err) | |
95 | { | |
96 | zlog_warn ("Failure to register for VIFWHOLE and WRONGVIF upcalls %d %s", | |
97 | errno, safe_strerror (errno)); | |
98 | return -1; | |
99 | } | |
77b7d90b DS |
100 | #else |
101 | zlog_warn ("PIM-SM will not work properly on this platform, until the ability to receive the WRVIFWHOLE upcall"); | |
102 | #endif | |
87243934 DS |
103 | } |
104 | ||
12e41d03 DL |
105 | return 0; |
106 | } | |
107 | ||
08e1fe76 | 108 | static const char *igmpmsgtype2str[IGMPMSG_WRVIFWHOLE + 1] = { |
e355e30f DS |
109 | "<unknown_upcall?>", |
110 | "NOCACHE", | |
111 | "WRONGVIF", | |
08e1fe76 DS |
112 | "WHOLEPKT", |
113 | "WRVIFWHOLE" }; | |
e355e30f DS |
114 | |
115 | static int | |
c29a5806 | 116 | pim_mroute_msg_nocache (int fd, struct interface *ifp, const struct igmpmsg *msg) |
12e41d03 | 117 | { |
04b40f02 | 118 | struct pim_interface *pim_ifp = ifp->info; |
59471fb8 | 119 | struct pim_upstream *up; |
065bee4b | 120 | struct pim_rpf *rpg; |
4ed0af70 | 121 | struct prefix_sg sg; |
04b40f02 | 122 | |
c8ae3ce8 | 123 | rpg = RP(msg->im_dst); |
04b40f02 DS |
124 | /* |
125 | * If the incoming interface is unknown OR | |
126 | * the Interface type is SSM we don't need to | |
127 | * do anything here | |
128 | */ | |
63c59d0c | 129 | if ((pim_rpf_addr_is_inaddr_none (rpg)) || |
04b40f02 | 130 | (!pim_ifp) || |
d2772e7b | 131 | (!(PIM_I_am_DR(pim_ifp)))) |
ffac1326 DS |
132 | { |
133 | if (PIM_DEBUG_MROUTE_DETAIL) | |
134 | zlog_debug ("%s: Interface is not configured correctly to handle incoming packet: Could be !DR, !pim_ifp, !SM, !RP", | |
135 | __PRETTY_FUNCTION__); | |
136 | return 0; | |
137 | } | |
04b40f02 | 138 | |
065bee4b DS |
139 | /* |
140 | * If we've received a multicast packet that isn't connected to | |
141 | * us | |
142 | */ | |
3565202d | 143 | if (!pim_if_connected_to_source (ifp, msg->im_src)) |
065bee4b | 144 | { |
6c7197b1 | 145 | if (PIM_DEBUG_MROUTE_DETAIL) |
8f547471 | 146 | zlog_debug ("%s: Received incoming packet that doesn't originate on our seg", |
065bee4b DS |
147 | __PRETTY_FUNCTION__); |
148 | return 0; | |
149 | } | |
150 | ||
4ed0af70 DS |
151 | memset (&sg, 0, sizeof (struct prefix_sg)); |
152 | sg.src = msg->im_src; | |
153 | sg.grp = msg->im_dst; | |
c29a5806 | 154 | |
e711cd3c DS |
155 | up = pim_upstream_find_or_add (&sg, ifp, PIM_UPSTREAM_FLAG_MASK_FHR, __PRETTY_FUNCTION__); |
156 | if (!up) | |
157 | { | |
158 | if (PIM_DEBUG_MROUTE) | |
159 | { | |
160 | zlog_debug("%s: Failure to add upstream information for %s", | |
161 | __PRETTY_FUNCTION__, | |
162 | pim_str_sg_dump (&sg)); | |
163 | } | |
164 | return 0; | |
59471fb8 | 165 | } |
8bfb8b67 DS |
166 | |
167 | /* | |
168 | * I moved this debug till after the actual add because | |
169 | * I want to take advantage of the up->sg_str being filled in. | |
170 | */ | |
171 | if (PIM_DEBUG_MROUTE) { | |
172 | zlog_debug("%s: Adding a Route %s for WHOLEPKT consumption", | |
173 | __PRETTY_FUNCTION__, up->sg_str); | |
174 | } | |
175 | ||
a9b59879 | 176 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); |
5f6f65b1 DS |
177 | pim_upstream_keep_alive_timer_start (up, qpim_keep_alive_time); |
178 | ||
25a335e0 | 179 | up->channel_oil->cc.pktcnt++; |
0bf27c5c | 180 | PIM_UPSTREAM_FLAG_SET_FHR(up->flags); |
633988a7 CS |
181 | // resolve mfcc_parent prior to mroute_add in channel_add_oif |
182 | if (up->channel_oil->oil.mfcc_parent >= MAXVIFS) | |
183 | { | |
184 | int vif_index = 0; | |
185 | vif_index = | |
186 | pim_if_find_vifindex_by_ifindex (up->rpf.source_nexthop. | |
187 | interface->ifindex); | |
188 | up->channel_oil->oil.mfcc_parent = vif_index; | |
189 | } | |
15a5dafe | 190 | pim_register_join (up); |
59471fb8 | 191 | |
e355e30f DS |
192 | return 0; |
193 | } | |
12e41d03 | 194 | |
e355e30f | 195 | static int |
c29a5806 | 196 | pim_mroute_msg_wholepkt (int fd, struct interface *ifp, const char *buf) |
e355e30f | 197 | { |
59471fb8 | 198 | struct pim_interface *pim_ifp; |
4ed0af70 | 199 | struct prefix_sg sg; |
ed66602c | 200 | struct pim_rpf *rpg; |
c8ae3ce8 | 201 | const struct ip *ip_hdr; |
59471fb8 | 202 | struct pim_upstream *up; |
04b40f02 | 203 | |
c8ae3ce8 DS |
204 | ip_hdr = (const struct ip *)buf; |
205 | ||
4ed0af70 DS |
206 | memset (&sg, 0, sizeof (struct prefix_sg)); |
207 | sg.src = ip_hdr->ip_src; | |
208 | sg.grp = ip_hdr->ip_dst; | |
c8ae3ce8 | 209 | |
5074a423 | 210 | up = pim_upstream_find(&sg); |
59471fb8 | 211 | if (!up) { |
850a9f99 DS |
212 | struct prefix_sg star = sg; |
213 | star.src.s_addr = INADDR_ANY; | |
214 | ||
215 | up = pim_upstream_find(&star); | |
216 | ||
217 | if (up && PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(up->flags)) | |
218 | { | |
219 | up = pim_upstream_add (&sg, ifp, PIM_UPSTREAM_FLAG_MASK_SRC_LHR, __PRETTY_FUNCTION__); | |
2830b018 DS |
220 | if (!up) |
221 | { | |
222 | if (PIM_DEBUG_MROUTE) | |
223 | zlog_debug ("%s: Unable to create upstream information for %s", | |
224 | __PRETTY_FUNCTION__, pim_str_sg_dump (&sg)); | |
225 | return 0; | |
226 | } | |
850a9f99 DS |
227 | pim_upstream_keep_alive_timer_start (up, qpim_keep_alive_time); |
228 | pim_upstream_inherited_olist (up); | |
229 | pim_upstream_switch(up, PIM_UPSTREAM_JOINED); | |
230 | ||
231 | if (PIM_DEBUG_MROUTE) | |
232 | zlog_debug ("%s: Creating %s upstream on LHR", | |
233 | __PRETTY_FUNCTION__, up->sg_str); | |
234 | return 0; | |
235 | } | |
6c7197b1 | 236 | if (PIM_DEBUG_MROUTE_DETAIL) { |
5074a423 DS |
237 | zlog_debug("%s: Unable to find upstream channel WHOLEPKT%s", |
238 | __PRETTY_FUNCTION__, pim_str_sg_dump (&sg)); | |
59471fb8 DS |
239 | } |
240 | return 0; | |
241 | } | |
242 | ||
998af219 DS |
243 | pim_ifp = up->rpf.source_nexthop.interface->info; |
244 | ||
4ed0af70 | 245 | rpg = RP(sg.grp); |
c8ae3ce8 | 246 | |
63c59d0c | 247 | if ((pim_rpf_addr_is_inaddr_none (rpg)) || |
c8ae3ce8 | 248 | (!pim_ifp) || |
d2772e7b | 249 | (!(PIM_I_am_DR(pim_ifp)))) { |
630f76b6 | 250 | if (PIM_DEBUG_MROUTE) { |
998af219 DS |
251 | zlog_debug("%s: Failed Check send packet", __PRETTY_FUNCTION__); |
252 | } | |
c8ae3ce8 | 253 | return 0; |
04b40f02 | 254 | } |
84366c7e | 255 | |
2ddab288 DS |
256 | /* |
257 | * If we've received a register suppress | |
258 | */ | |
259 | if (!up->t_rs_timer) | |
15a5dafe | 260 | { |
261 | if (pim_is_grp_ssm (sg.grp)) | |
262 | { | |
263 | if (PIM_DEBUG_PIM_REG) | |
264 | zlog_debug ("%s register forward skipped as group is SSM", | |
265 | pim_str_sg_dump (&sg)); | |
266 | return 0; | |
267 | } | |
268 | pim_register_send((uint8_t *)buf + sizeof(struct ip), | |
269 | ntohs (ip_hdr->ip_len) - sizeof (struct ip), | |
270 | pim_ifp->primary_address, rpg, 0, up); | |
271 | } | |
e355e30f DS |
272 | return 0; |
273 | } | |
12e41d03 | 274 | |
e355e30f | 275 | static int |
c29a5806 | 276 | pim_mroute_msg_wrongvif (int fd, struct interface *ifp, const struct igmpmsg *msg) |
e355e30f DS |
277 | { |
278 | struct pim_ifchannel *ch; | |
279 | struct pim_interface *pim_ifp; | |
4ed0af70 | 280 | struct prefix_sg sg; |
12e41d03 | 281 | |
c29a5806 DS |
282 | memset (&sg, 0, sizeof (struct prefix_sg)); |
283 | sg.src = msg->im_src; | |
284 | sg.grp = msg->im_dst; | |
285 | ||
e355e30f DS |
286 | /* |
287 | Send Assert(S,G) on iif as response to WRONGVIF kernel upcall. | |
12e41d03 | 288 | |
e355e30f DS |
289 | RFC 4601 4.8.2. PIM-SSM-Only Routers |
290 | ||
291 | iif is the incoming interface of the packet. | |
292 | if (iif is in inherited_olist(S,G)) { | |
293 | send Assert(S,G) on iif | |
294 | } | |
295 | */ | |
12e41d03 | 296 | |
e355e30f | 297 | if (!ifp) { |
0490c22d | 298 | if (PIM_DEBUG_MROUTE) |
c29a5806 | 299 | zlog_debug("%s: WRONGVIF (S,G)=%s could not find input interface for input_vif_index=%d", |
12e41d03 | 300 | __PRETTY_FUNCTION__, |
c29a5806 | 301 | pim_str_sg_dump (&sg), msg->im_vif); |
e355e30f DS |
302 | return -1; |
303 | } | |
12e41d03 | 304 | |
e355e30f DS |
305 | pim_ifp = ifp->info; |
306 | if (!pim_ifp) { | |
0490c22d | 307 | if (PIM_DEBUG_MROUTE) |
c29a5806 | 308 | zlog_debug("%s: WRONGVIF (S,G)=%s multicast not enabled on interface %s", |
e355e30f | 309 | __PRETTY_FUNCTION__, |
c29a5806 | 310 | pim_str_sg_dump (&sg), ifp->name); |
e355e30f DS |
311 | return -2; |
312 | } | |
12e41d03 | 313 | |
5074a423 | 314 | ch = pim_ifchannel_find(ifp, &sg); |
e355e30f | 315 | if (!ch) { |
0490c22d DS |
316 | struct prefix_sg star_g = sg; |
317 | if (PIM_DEBUG_MROUTE) | |
c29a5806 | 318 | zlog_debug("%s: WRONGVIF (S,G)=%s could not find channel on interface %s", |
e355e30f | 319 | __PRETTY_FUNCTION__, |
0490c22d DS |
320 | pim_str_sg_dump(&sg), ifp->name); |
321 | ||
322 | star_g.src.s_addr = INADDR_ANY; | |
323 | ch = pim_ifchannel_find(ifp, &star_g); | |
324 | if (!ch) { | |
325 | if (PIM_DEBUG_MROUTE) | |
326 | zlog_debug("%s: WRONGVIF (*,G)=%s could not find channel on interface %s", | |
327 | __PRETTY_FUNCTION__, | |
328 | pim_str_sg_dump(&star_g), ifp->name); | |
329 | return -3; | |
12e41d03 | 330 | } |
e355e30f | 331 | } |
12e41d03 | 332 | |
e355e30f DS |
333 | /* |
334 | RFC 4601: 4.6.1. (S,G) Assert Message State Machine | |
335 | ||
336 | Transitions from NoInfo State | |
337 | ||
338 | An (S,G) data packet arrives on interface I, AND | |
339 | CouldAssert(S,G,I)==TRUE An (S,G) data packet arrived on an | |
340 | downstream interface that is in our (S,G) outgoing interface | |
341 | list. We optimistically assume that we will be the assert | |
342 | winner for this (S,G), and so we transition to the "I am Assert | |
343 | Winner" state and perform Actions A1 (below), which will | |
344 | initiate the assert negotiation for (S,G). | |
345 | */ | |
12e41d03 | 346 | |
e355e30f | 347 | if (ch->ifassert_state != PIM_IFASSERT_NOINFO) { |
630f76b6 | 348 | if (PIM_DEBUG_MROUTE) { |
c29a5806 | 349 | zlog_debug("%s: WRONGVIF (S,G)=%s channel is not on Assert NoInfo state for interface %s", |
e355e30f | 350 | __PRETTY_FUNCTION__, |
8bfb8b67 | 351 | ch->sg_str, ifp->name); |
12e41d03 | 352 | } |
e355e30f DS |
353 | return -4; |
354 | } | |
12e41d03 | 355 | |
e355e30f | 356 | if (!PIM_IF_FLAG_TEST_COULD_ASSERT(ch->flags)) { |
630f76b6 | 357 | if (PIM_DEBUG_MROUTE) { |
c29a5806 | 358 | zlog_debug("%s: WRONGVIF (S,G)=%s interface %s is not downstream for channel", |
e355e30f | 359 | __PRETTY_FUNCTION__, |
8bfb8b67 | 360 | ch->sg_str, ifp->name); |
12e41d03 | 361 | } |
e355e30f DS |
362 | return -5; |
363 | } | |
12e41d03 | 364 | |
e355e30f | 365 | if (assert_action_a1(ch)) { |
630f76b6 | 366 | if (PIM_DEBUG_MROUTE) { |
c29a5806 | 367 | zlog_debug("%s: WRONGVIF (S,G)=%s assert_action_a1 failure on interface %s", |
e355e30f | 368 | __PRETTY_FUNCTION__, |
8bfb8b67 | 369 | ch->sg_str, ifp->name); |
12e41d03 | 370 | } |
e355e30f DS |
371 | return -6; |
372 | } | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
08e1fe76 DS |
377 | static int |
378 | pim_mroute_msg_wrvifwhole (int fd, struct interface *ifp, const char *buf) | |
379 | { | |
380 | const struct ip *ip_hdr = (const struct ip *)buf; | |
381 | struct pim_interface *pim_ifp; | |
382 | struct pim_ifchannel *ch; | |
383 | struct pim_upstream *up; | |
b7ddd2ec | 384 | struct prefix_sg star_g; |
08e1fe76 | 385 | struct prefix_sg sg; |
5f6f65b1 | 386 | struct channel_oil *oil; |
08e1fe76 DS |
387 | |
388 | memset (&sg, 0, sizeof (struct prefix_sg)); | |
389 | sg.src = ip_hdr->ip_src; | |
390 | sg.grp = ip_hdr->ip_dst; | |
391 | ||
08e1fe76 DS |
392 | ch = pim_ifchannel_find(ifp, &sg); |
393 | if (ch) | |
394 | { | |
395 | if (PIM_DEBUG_MROUTE) | |
396 | zlog_debug ("WRVIFWHOLE (S,G)=%s found ifchannel on interface %s", | |
8bfb8b67 | 397 | ch->sg_str, ifp->name); |
08e1fe76 DS |
398 | return -1; |
399 | } | |
b7ddd2ec | 400 | |
0490c22d DS |
401 | star_g = sg; |
402 | star_g.src.s_addr = INADDR_ANY; | |
b7ddd2ec | 403 | #if 0 |
0490c22d DS |
404 | ch = pim_ifchannel_find(ifp, &star_g); |
405 | if (ch) | |
406 | { | |
407 | if (PIM_DEBUG_MROUTE) | |
408 | zlog_debug ("WRVIFWHOLE (*,G)=%s found ifchannel on interface %s", | |
409 | pim_str_sg_dump (&star_g), ifp->name); | |
410 | return -1; | |
411 | } | |
5cd11e3c | 412 | #endif |
08e1fe76 | 413 | |
8e38a2cf DS |
414 | up = pim_upstream_find (&sg); |
415 | if (up) | |
416 | { | |
b7ddd2ec | 417 | struct pim_upstream *parent; |
9244dd13 DS |
418 | struct pim_nexthop source; |
419 | struct pim_rpf *rpf = RP (sg.grp); | |
420 | if (!rpf || !rpf->source_nexthop.interface) | |
421 | return 0; | |
422 | ||
b7ddd2ec DS |
423 | /* |
424 | * If we have received a WRVIFWHOLE and are at this | |
425 | * point, we could be receiving the packet on the *,G | |
426 | * tree, let's check and if so we can safely drop | |
427 | * it. | |
428 | */ | |
429 | parent = pim_upstream_find (&star_g); | |
430 | if (parent && parent->rpf.source_nexthop.interface == ifp) | |
431 | return 0; | |
432 | ||
9244dd13 DS |
433 | pim_ifp = rpf->source_nexthop.interface->info; |
434 | ||
435 | memset (&source, 0, sizeof (source)); | |
7fe1f662 DS |
436 | /* |
437 | * If we are the fhr that means we are getting a callback during | |
438 | * the pimreg period, so I believe we can ignore this packet | |
439 | */ | |
0bf27c5c | 440 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) |
7fe1f662 | 441 | { |
7fe1f662 | 442 | //No if channel, but upstream we are at the RP. |
88d6652e DS |
443 | if (pim_nexthop_lookup (&source, up->upstream_register, 0) == 0) |
444 | pim_register_stop_send(source.interface, &sg, pim_ifp->primary_address, up->upstream_register); | |
51e82833 DS |
445 | if (!up->channel_oil) |
446 | up->channel_oil = pim_channel_oil_add (&sg, pim_ifp->mroute_vif_index); | |
5b668dd7 | 447 | pim_upstream_inherited_olist (up); |
51e82833 | 448 | if (!up->channel_oil->installed) |
6a78764e | 449 | pim_mroute_add (up->channel_oil, __PRETTY_FUNCTION__); |
3a66b17b | 450 | pim_upstream_set_sptbit (up, ifp); |
7fe1f662 | 451 | } |
5b668dd7 DS |
452 | else |
453 | { | |
9244dd13 DS |
454 | if (I_am_RP (up->sg.grp)) |
455 | { | |
456 | if (pim_nexthop_lookup (&source, up->upstream_register, 0) == 0) | |
457 | pim_register_stop_send(source.interface, &sg, pim_ifp->primary_address, up->upstream_register); | |
458 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
459 | } | |
5b668dd7 DS |
460 | pim_upstream_keep_alive_timer_start (up, qpim_keep_alive_time); |
461 | pim_upstream_inherited_olist (up); | |
462 | pim_mroute_msg_wholepkt (fd, ifp, buf); | |
463 | } | |
464 | return 0; | |
8e38a2cf DS |
465 | } |
466 | ||
5f6f65b1 DS |
467 | pim_ifp = ifp->info; |
468 | oil = pim_channel_oil_add (&sg, pim_ifp->mroute_vif_index); | |
469 | if (!oil->installed) | |
6a78764e | 470 | pim_mroute_add (oil, __PRETTY_FUNCTION__); |
5f6f65b1 | 471 | if (pim_if_connected_to_source (ifp, sg.src)) |
08e1fe76 | 472 | { |
e5905a3b | 473 | up = pim_upstream_add (&sg, ifp, PIM_UPSTREAM_FLAG_MASK_FHR, __PRETTY_FUNCTION__); |
5f6f65b1 DS |
474 | if (!up) |
475 | { | |
476 | if (PIM_DEBUG_MROUTE) | |
477 | zlog_debug ("%s: WRONGVIF%s unable to create upstream on interface", | |
478 | pim_str_sg_dump (&sg), ifp->name); | |
479 | return -2; | |
480 | } | |
a9b59879 | 481 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); |
5f6f65b1 DS |
482 | pim_upstream_keep_alive_timer_start (up, qpim_keep_alive_time); |
483 | up->channel_oil = oil; | |
484 | up->channel_oil->cc.pktcnt++; | |
15a5dafe | 485 | pim_register_join (up); |
5f6f65b1 | 486 | pim_upstream_inherited_olist (up); |
08e1fe76 | 487 | |
5f6f65b1 DS |
488 | // Send the packet to the RP |
489 | pim_mroute_msg_wholepkt (fd, ifp, buf); | |
490 | } | |
08e1fe76 DS |
491 | |
492 | return 0; | |
493 | } | |
494 | ||
e355e30f DS |
495 | int pim_mroute_msg(int fd, const char *buf, int buf_size) |
496 | { | |
497 | struct interface *ifp; | |
b05b72e8 | 498 | struct pim_interface *pim_ifp; |
e355e30f DS |
499 | const struct ip *ip_hdr; |
500 | const struct igmpmsg *msg; | |
eaa54bdb DW |
501 | char ip_src_str[INET_ADDRSTRLEN] = ""; |
502 | char ip_dst_str[INET_ADDRSTRLEN] = ""; | |
503 | char src_str[INET_ADDRSTRLEN] = "<src?>"; | |
504 | char grp_str[INET_ADDRSTRLEN] = "<grp?>"; | |
b05b72e8 DW |
505 | struct in_addr ifaddr; |
506 | struct igmp_sock *igmp; | |
12e41d03 | 507 | |
e355e30f DS |
508 | ip_hdr = (const struct ip *) buf; |
509 | ||
b05b72e8 DW |
510 | if (ip_hdr->ip_p == IPPROTO_IGMP) { |
511 | ||
512 | /* We have the IP packet but we do not know which interface this packet was | |
513 | * received on. Find the interface that is on the same subnet as the source | |
514 | * of the IP packet. | |
515 | */ | |
9f0edbc9 | 516 | ifp = pim_if_lookup_address_vrf (ip_hdr->ip_src, VRF_DEFAULT); |
b05b72e8 DW |
517 | |
518 | if (!ifp) { | |
519 | if (PIM_DEBUG_MROUTE_DETAIL) { | |
520 | pim_inet4_dump("<src?>", ip_hdr->ip_src, ip_src_str, sizeof(ip_src_str)); | |
521 | pim_inet4_dump("<dst?>", ip_hdr->ip_dst, ip_dst_str, sizeof(ip_dst_str)); | |
522 | ||
9f0edbc9 | 523 | zlog_warn("%s: igmp kernel upcall could not find usable interface for %s -> %s", |
b05b72e8 DW |
524 | __PRETTY_FUNCTION__, |
525 | ip_src_str, | |
526 | ip_dst_str); | |
527 | } | |
528 | return 0; | |
529 | } | |
b05b72e8 DW |
530 | pim_ifp = ifp->info; |
531 | ifaddr = pim_find_primary_addr(ifp); | |
532 | igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list, ifaddr); | |
533 | ||
02e5bd72 | 534 | if (PIM_DEBUG_MROUTE) { |
b05b72e8 DW |
535 | pim_inet4_dump("<src?>", ip_hdr->ip_src, ip_src_str, sizeof(ip_src_str)); |
536 | pim_inet4_dump("<dst?>", ip_hdr->ip_dst, ip_dst_str, sizeof(ip_dst_str)); | |
537 | ||
02e5bd72 DS |
538 | zlog_warn("%s: igmp kernel upcall on %s(%p) for %s -> %s", |
539 | __PRETTY_FUNCTION__, ifp->name, igmp, ip_src_str, ip_dst_str); | |
b05b72e8 | 540 | } |
02e5bd72 DS |
541 | if (igmp) |
542 | pim_igmp_packet(igmp, (char *)buf, buf_size); | |
b05b72e8 DW |
543 | |
544 | } else if (ip_hdr->ip_p) { | |
6c7197b1 | 545 | if (PIM_DEBUG_MROUTE_DETAIL) { |
e5d33c83 DS |
546 | pim_inet4_dump("<src?>", ip_hdr->ip_src, src_str, sizeof(src_str)); |
547 | pim_inet4_dump("<grp?>", ip_hdr->ip_dst, grp_str, sizeof(grp_str)); | |
b05b72e8 DW |
548 | zlog_debug("%s: no kernel upcall proto=%d src: %s dst: %s msg_size=%d", |
549 | __PRETTY_FUNCTION__, ip_hdr->ip_p, src_str, grp_str, buf_size); | |
e355e30f | 550 | } |
e355e30f | 551 | |
b05b72e8 DW |
552 | } else { |
553 | msg = (const struct igmpmsg *) buf; | |
e355e30f | 554 | |
b05b72e8 | 555 | ifp = pim_if_find_by_vif_index(msg->im_vif); |
e355e30f | 556 | |
38f380f5 DS |
557 | if (!ifp) |
558 | return 0; | |
b05b72e8 DW |
559 | if (PIM_DEBUG_MROUTE) { |
560 | pim_inet4_dump("<src?>", msg->im_src, src_str, sizeof(src_str)); | |
561 | pim_inet4_dump("<grp?>", msg->im_dst, grp_str, sizeof(grp_str)); | |
562 | zlog_warn("%s: pim kernel upcall %s type=%d ip_p=%d from fd=%d for (S,G)=(%s,%s) on %s vifi=%d size=%d", | |
563 | __PRETTY_FUNCTION__, | |
564 | igmpmsgtype2str[msg->im_msgtype], | |
565 | msg->im_msgtype, | |
566 | ip_hdr->ip_p, | |
567 | fd, | |
568 | src_str, | |
569 | grp_str, | |
570 | ifp->name, | |
571 | msg->im_vif, buf_size); | |
572 | } | |
e355e30f | 573 | |
b05b72e8 DW |
574 | switch (msg->im_msgtype) { |
575 | case IGMPMSG_WRONGVIF: | |
576 | return pim_mroute_msg_wrongvif(fd, ifp, msg); | |
577 | break; | |
578 | case IGMPMSG_NOCACHE: | |
579 | return pim_mroute_msg_nocache(fd, ifp, msg); | |
580 | break; | |
581 | case IGMPMSG_WHOLEPKT: | |
582 | return pim_mroute_msg_wholepkt(fd, ifp, (const char *)msg); | |
583 | break; | |
584 | case IGMPMSG_WRVIFWHOLE: | |
585 | return pim_mroute_msg_wrvifwhole (fd, ifp, (const char *)msg); | |
586 | break; | |
587 | default: | |
588 | break; | |
589 | } | |
e355e30f | 590 | } |
12e41d03 DL |
591 | |
592 | return 0; | |
593 | } | |
594 | ||
12e41d03 DL |
595 | static int mroute_read(struct thread *t) |
596 | { | |
6806e04d DS |
597 | static long long count; |
598 | char buf[10000]; | |
599 | int result = 0; | |
600 | int cont = 1; | |
12e41d03 | 601 | int fd; |
6806e04d | 602 | int rd; |
12e41d03 DL |
603 | |
604 | fd = THREAD_FD(t); | |
12e41d03 | 605 | |
6806e04d DS |
606 | while (cont) |
607 | { | |
608 | rd = read(fd, buf, sizeof(buf)); | |
609 | if (rd < 0) { | |
610 | if (errno == EINTR) | |
611 | continue; | |
612 | if (errno == EWOULDBLOCK || errno == EAGAIN) | |
e43223bc DS |
613 | break; |
614 | ||
6806e04d DS |
615 | if (PIM_DEBUG_MROUTE) |
616 | zlog_warn("%s: failure reading fd=%d: errno=%d: %s", | |
617 | __PRETTY_FUNCTION__, fd, errno, safe_strerror(errno)); | |
618 | goto done; | |
619 | } | |
12e41d03 | 620 | |
6806e04d DS |
621 | result = pim_mroute_msg(fd, buf, rd); |
622 | ||
623 | count++; | |
8e4c9ef3 | 624 | if (count % qpim_packet_process == 0) |
6806e04d DS |
625 | cont = 0; |
626 | } | |
12e41d03 | 627 | /* Keep reading */ |
6806e04d | 628 | done: |
7a90f85c | 629 | qpim_mroute_socket_reader = NULL; |
12e41d03 DL |
630 | mroute_read_on(); |
631 | ||
632 | return result; | |
633 | } | |
634 | ||
635 | static void mroute_read_on() | |
636 | { | |
637 | zassert(!qpim_mroute_socket_reader); | |
12e41d03 DL |
638 | |
639 | THREAD_READ_ON(master, qpim_mroute_socket_reader, | |
640 | mroute_read, 0, qpim_mroute_socket_fd); | |
641 | } | |
642 | ||
643 | static void mroute_read_off() | |
644 | { | |
645 | THREAD_OFF(qpim_mroute_socket_reader); | |
646 | } | |
647 | ||
648 | int pim_mroute_socket_enable() | |
649 | { | |
650 | int fd; | |
651 | ||
12e41d03 DL |
652 | if ( pimd_privs.change (ZPRIVS_RAISE) ) |
653 | zlog_err ("pim_mroute_socket_enable: could not raise privs, %s", | |
654 | safe_strerror (errno) ); | |
655 | ||
656 | fd = socket(AF_INET, SOCK_RAW, IPPROTO_IGMP); | |
657 | ||
658 | if ( pimd_privs.change (ZPRIVS_LOWER) ) | |
659 | zlog_err ("pim_mroute_socket_enable: could not lower privs, %s", | |
660 | safe_strerror (errno) ); | |
661 | ||
662 | if (fd < 0) { | |
663 | zlog_warn("Could not create mroute socket: errno=%d: %s", | |
664 | errno, safe_strerror(errno)); | |
665 | return -2; | |
666 | } | |
667 | ||
668 | if (pim_mroute_set(fd, 1)) { | |
669 | zlog_warn("Could not enable mroute on socket fd=%d: errno=%d: %s", | |
670 | fd, errno, safe_strerror(errno)); | |
671 | close(fd); | |
672 | return -3; | |
673 | } | |
674 | ||
675 | qpim_mroute_socket_fd = fd; | |
b45cefcb | 676 | |
12e41d03 DL |
677 | qpim_mroute_socket_creation = pim_time_monotonic_sec(); |
678 | mroute_read_on(); | |
679 | ||
12e41d03 DL |
680 | return 0; |
681 | } | |
682 | ||
683 | int pim_mroute_socket_disable() | |
684 | { | |
12e41d03 DL |
685 | if (pim_mroute_set(qpim_mroute_socket_fd, 0)) { |
686 | zlog_warn("Could not disable mroute on socket fd=%d: errno=%d: %s", | |
687 | qpim_mroute_socket_fd, errno, safe_strerror(errno)); | |
688 | return -2; | |
689 | } | |
690 | ||
691 | if (close(qpim_mroute_socket_fd)) { | |
692 | zlog_warn("Failure closing mroute socket: fd=%d errno=%d: %s", | |
693 | qpim_mroute_socket_fd, errno, safe_strerror(errno)); | |
694 | return -3; | |
695 | } | |
696 | ||
697 | mroute_read_off(); | |
698 | qpim_mroute_socket_fd = -1; | |
699 | ||
12e41d03 DL |
700 | return 0; |
701 | } | |
702 | ||
703 | /* | |
704 | For each network interface (e.g., physical or a virtual tunnel) that | |
705 | would be used for multicast forwarding, a corresponding multicast | |
706 | interface must be added to the kernel. | |
707 | */ | |
744d91b3 | 708 | int pim_mroute_add_vif(struct interface *ifp, struct in_addr ifaddr, unsigned char flags) |
12e41d03 | 709 | { |
744d91b3 | 710 | struct pim_interface *pim_ifp = ifp->info; |
12e41d03 DL |
711 | struct vifctl vc; |
712 | int err; | |
713 | ||
12e41d03 | 714 | memset(&vc, 0, sizeof(vc)); |
744d91b3 | 715 | vc.vifc_vifi = pim_ifp->mroute_vif_index; |
b3f2bf7c | 716 | #ifdef VIFF_USE_IFINDEX |
744d91b3 | 717 | vc.vifc_lcl_ifindex = ifp->ifindex; |
b3f2bf7c RW |
718 | #else |
719 | if (ifaddr.s_addr == INADDR_ANY) { | |
720 | zlog_warn("%s: unnumbered interfaces are not supported on this platform", | |
721 | __PRETTY_FUNCTION__); | |
722 | return -1; | |
723 | } | |
724 | memcpy(&vc.vifc_lcl_addr, &ifaddr, sizeof(vc.vifc_lcl_addr)); | |
725 | #endif | |
b45cefcb | 726 | vc.vifc_flags = flags; |
12e41d03 DL |
727 | vc.vifc_threshold = PIM_MROUTE_MIN_TTL; |
728 | vc.vifc_rate_limit = 0; | |
12e41d03 DL |
729 | |
730 | #ifdef PIM_DVMRP_TUNNEL | |
731 | if (vc.vifc_flags & VIFF_TUNNEL) { | |
732 | memcpy(&vc.vifc_rmt_addr, &vif_remote_addr, sizeof(vc.vifc_rmt_addr)); | |
733 | } | |
734 | #endif | |
735 | ||
b45cefcb | 736 | err = setsockopt(qpim_mroute_socket_fd, IPPROTO_IP, MRT_ADD_VIF, (void*) &vc, sizeof(vc)); |
12e41d03 | 737 | if (err) { |
eaa54bdb | 738 | char ifaddr_str[INET_ADDRSTRLEN]; |
12e41d03 DL |
739 | |
740 | pim_inet4_dump("<ifaddr?>", ifaddr, ifaddr_str, sizeof(ifaddr_str)); | |
741 | ||
59471fb8 | 742 | zlog_warn("%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_ADD_VIF,vif_index=%d,ifaddr=%s,flag=%d): errno=%d: %s", |
12e41d03 | 743 | __FILE__, __PRETTY_FUNCTION__, |
744d91b3 | 744 | qpim_mroute_socket_fd, ifp->ifindex, ifaddr_str, flags, |
3d7765d7 | 745 | errno, safe_strerror(errno)); |
12e41d03 DL |
746 | return -2; |
747 | } | |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | int pim_mroute_del_vif(int vif_index) | |
753 | { | |
754 | struct vifctl vc; | |
755 | int err; | |
756 | ||
e81d9709 CS |
757 | if (PIM_DEBUG_MROUTE) |
758 | { | |
759 | struct interface *ifp = pim_if_find_by_vif_index (vif_index); | |
760 | zlog_debug ("%s %s: Del Vif %d (%s) ", __FILE__, | |
761 | __PRETTY_FUNCTION__, vif_index, ifp ? ifp->name : "NULL"); | |
762 | } | |
763 | ||
12e41d03 DL |
764 | memset(&vc, 0, sizeof(vc)); |
765 | vc.vifc_vifi = vif_index; | |
766 | ||
767 | err = setsockopt(qpim_mroute_socket_fd, IPPROTO_IP, MRT_DEL_VIF, (void*) &vc, sizeof(vc)); | |
768 | if (err) { | |
12e41d03 DL |
769 | zlog_warn("%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_DEL_VIF,vif_index=%d): errno=%d: %s", |
770 | __FILE__, __PRETTY_FUNCTION__, | |
771 | qpim_mroute_socket_fd, vif_index, | |
3d7765d7 | 772 | errno, safe_strerror(errno)); |
12e41d03 DL |
773 | return -2; |
774 | } | |
775 | ||
776 | return 0; | |
777 | } | |
778 | ||
6a78764e | 779 | int pim_mroute_add(struct channel_oil *c_oil, const char *name) |
12e41d03 DL |
780 | { |
781 | int err; | |
2ca35b3d | 782 | int orig = 0; |
0365f56b | 783 | int orig_iif_vif = 0; |
12e41d03 DL |
784 | |
785 | qpim_mroute_add_last = pim_time_monotonic_sec(); | |
786 | ++qpim_mroute_add_events; | |
787 | ||
429a291b | 788 | /* Do not install route if incoming interface is undefined. */ |
1bc98276 | 789 | if (c_oil->oil.mfcc_parent >= MAXVIFS) |
429a291b CS |
790 | { |
791 | if (PIM_DEBUG_MROUTE) | |
792 | { | |
793 | char buf[1000]; | |
794 | zlog_debug("%s(%s) %s Attempting to add vifi that is invalid to mroute table", | |
795 | __PRETTY_FUNCTION__, name, pim_channel_oil_dump (c_oil, buf, sizeof(buf))); | |
796 | } | |
797 | return -2; | |
798 | } | |
12e41d03 | 799 | |
d3aded99 DS |
800 | /* The linux kernel *expects* the incoming |
801 | * vif to be part of the outgoing list | |
802 | * in the case of a (*,G). | |
803 | */ | |
c171d6d8 | 804 | if (c_oil->oil.mfcc_origin.s_addr == INADDR_ANY) |
d3aded99 | 805 | { |
c171d6d8 DS |
806 | orig = c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent]; |
807 | c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent] = 1; | |
d3aded99 DS |
808 | } |
809 | ||
0365f56b DS |
810 | /* |
811 | * If we have an unresolved cache entry for the S,G | |
812 | * it is owned by the pimreg for the incoming IIF | |
813 | * So set pimreg as the IIF temporarily to cause | |
814 | * the packets to be forwarded. Then set it | |
815 | * to the correct IIF afterwords. | |
816 | */ | |
817 | if (!c_oil->installed && c_oil->oil.mfcc_origin.s_addr != INADDR_ANY && | |
818 | c_oil->oil.mfcc_parent != 0) | |
819 | { | |
820 | orig_iif_vif = c_oil->oil.mfcc_parent; | |
821 | c_oil->oil.mfcc_parent = 0; | |
822 | } | |
12e41d03 | 823 | err = setsockopt(qpim_mroute_socket_fd, IPPROTO_IP, MRT_ADD_MFC, |
c171d6d8 | 824 | &c_oil->oil, sizeof(c_oil->oil)); |
d3aded99 | 825 | |
0365f56b DS |
826 | if (!err && !c_oil->installed && c_oil->oil.mfcc_origin.s_addr != INADDR_ANY && |
827 | orig_iif_vif != 0) | |
828 | { | |
829 | c_oil->oil.mfcc_parent = orig_iif_vif; | |
830 | err = setsockopt (qpim_mroute_socket_fd, IPPROTO_IP, MRT_ADD_MFC, | |
831 | &c_oil->oil, sizeof (c_oil->oil)); | |
832 | } | |
833 | ||
c171d6d8 DS |
834 | if (c_oil->oil.mfcc_origin.s_addr == INADDR_ANY) |
835 | c_oil->oil.mfcc_ttls[c_oil->oil.mfcc_parent] = orig; | |
d3aded99 | 836 | |
12e41d03 | 837 | if (err) { |
12e41d03 DL |
838 | zlog_warn("%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_ADD_MFC): errno=%d: %s", |
839 | __FILE__, __PRETTY_FUNCTION__, | |
840 | qpim_mroute_socket_fd, | |
3d7765d7 | 841 | errno, safe_strerror(errno)); |
12e41d03 DL |
842 | return -2; |
843 | } | |
844 | ||
6a78764e DS |
845 | if (PIM_DEBUG_MROUTE) |
846 | { | |
781a1745 DS |
847 | char buf[1000]; |
848 | zlog_debug("%s(%s), Added Route: %s", | |
849 | __PRETTY_FUNCTION__, name, | |
850 | pim_channel_oil_dump (c_oil, buf, sizeof(buf))); | |
6a78764e DS |
851 | } |
852 | ||
58302dc7 | 853 | c_oil->installed = 1; |
12e41d03 DL |
854 | return 0; |
855 | } | |
856 | ||
6a78764e | 857 | int pim_mroute_del (struct channel_oil *c_oil, const char *name) |
12e41d03 DL |
858 | { |
859 | int err; | |
860 | ||
861 | qpim_mroute_del_last = pim_time_monotonic_sec(); | |
862 | ++qpim_mroute_del_events; | |
863 | ||
429a291b CS |
864 | if (!c_oil->installed) |
865 | { | |
866 | if (PIM_DEBUG_MROUTE) | |
867 | { | |
868 | char buf[1000]; | |
869 | zlog_debug("%s %s: vifi %d for route is %s not installed, do not need to send del req. ", | |
870 | __FILE__, __PRETTY_FUNCTION__, c_oil->oil.mfcc_parent, | |
871 | pim_channel_oil_dump (c_oil, buf, sizeof(buf))); | |
872 | } | |
873 | return -2; | |
874 | } | |
875 | ||
c171d6d8 | 876 | err = setsockopt(qpim_mroute_socket_fd, IPPROTO_IP, MRT_DEL_MFC, &c_oil->oil, sizeof(c_oil->oil)); |
12e41d03 | 877 | if (err) { |
05ca4827 DS |
878 | if (PIM_DEBUG_MROUTE) |
879 | zlog_warn("%s %s: failure: setsockopt(fd=%d,IPPROTO_IP,MRT_DEL_MFC): errno=%d: %s", | |
880 | __FILE__, __PRETTY_FUNCTION__, | |
881 | qpim_mroute_socket_fd, | |
882 | errno, safe_strerror(errno)); | |
12e41d03 DL |
883 | return -2; |
884 | } | |
885 | ||
6a78764e DS |
886 | if (PIM_DEBUG_MROUTE) |
887 | { | |
781a1745 DS |
888 | char buf[1000]; |
889 | zlog_debug("%s(%s), Deleted Route: %s", | |
890 | __PRETTY_FUNCTION__, name, | |
891 | pim_channel_oil_dump (c_oil, buf, sizeof(buf))); | |
6a78764e | 892 | } |
781a1745 | 893 | |
633988a7 | 894 | //Reset kernel installed flag |
58302dc7 DS |
895 | c_oil->installed = 0; |
896 | ||
12e41d03 DL |
897 | return 0; |
898 | } | |
3667e8a0 DS |
899 | |
900 | void | |
901 | pim_mroute_update_counters (struct channel_oil *c_oil) | |
902 | { | |
903 | struct sioc_sg_req sgreq; | |
904 | ||
3667e8a0 DS |
905 | c_oil->cc.oldpktcnt = c_oil->cc.pktcnt; |
906 | c_oil->cc.oldbytecnt = c_oil->cc.bytecnt; | |
907 | c_oil->cc.oldwrong_if = c_oil->cc.wrong_if; | |
908 | ||
c7b1183f DS |
909 | if (!c_oil->installed) |
910 | { | |
911 | c_oil->cc.lastused = 100 * qpim_keep_alive_time; | |
912 | if (PIM_DEBUG_MROUTE) | |
913 | { | |
914 | struct prefix_sg sg; | |
915 | ||
916 | sg.src = c_oil->oil.mfcc_origin; | |
917 | sg.grp = c_oil->oil.mfcc_mcastgrp; | |
918 | if (PIM_DEBUG_MROUTE) | |
919 | zlog_debug("Channel(%s) is not installed no need to collect data from kernel", | |
920 | pim_str_sg_dump (&sg)); | |
921 | } | |
922 | return; | |
923 | } | |
924 | ||
925 | memset (&sgreq, 0, sizeof(sgreq)); | |
926 | sgreq.src = c_oil->oil.mfcc_origin; | |
927 | sgreq.grp = c_oil->oil.mfcc_mcastgrp; | |
928 | ||
51e82833 | 929 | pim_zlookup_sg_statistics (c_oil); |
3667e8a0 DS |
930 | if (ioctl (qpim_mroute_socket_fd, SIOCGETSGCNT, &sgreq)) |
931 | { | |
c7b1183f DS |
932 | if (PIM_DEBUG_MROUTE) |
933 | { | |
934 | struct prefix_sg sg; | |
935 | ||
936 | sg.src = c_oil->oil.mfcc_origin; | |
937 | sg.grp = c_oil->oil.mfcc_mcastgrp; | |
938 | ||
939 | zlog_warn ("ioctl(SIOCGETSGCNT=%lu) failure for (S,G)=(%s): errno=%d: %s", | |
940 | (unsigned long)SIOCGETSGCNT, | |
941 | pim_str_sg_dump (&sg), | |
942 | errno, | |
943 | safe_strerror(errno)); | |
944 | } | |
3667e8a0 DS |
945 | return; |
946 | } | |
947 | ||
948 | c_oil->cc.pktcnt = sgreq.pktcnt; | |
949 | c_oil->cc.bytecnt = sgreq.bytecnt; | |
950 | c_oil->cc.wrong_if = sgreq.wrong_if; | |
951 | ||
952 | return; | |
953 | } |