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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" |
a5fa9822 | 46 | #include "pim_msg.h" |
12e41d03 | 47 | |
8ea5d944 | 48 | static void mroute_read_on(struct pim_instance *pim); |
12e41d03 | 49 | |
d62a17ae | 50 | |
a5fa9822 | 51 | int pim_mroute_msg_nocache(int fd, struct interface *ifp, const kernmsg *msg) |
12e41d03 | 52 | { |
d62a17ae | 53 | struct pim_interface *pim_ifp = ifp->info; |
54 | struct pim_upstream *up; | |
55 | struct pim_rpf *rpg; | |
6fff2cc6 | 56 | pim_sgaddr sg; |
d62a17ae | 57 | |
a5fa9822 | 58 | rpg = pim_ifp ? RP(pim_ifp->pim, msg->msg_im_dst) : NULL; |
d62a17ae | 59 | /* |
60 | * If the incoming interface is unknown OR | |
61 | * the Interface type is SSM we don't need to | |
62 | * do anything here | |
63 | */ | |
cc144e8b | 64 | if (!rpg || pim_rpf_addr_is_inaddr_any(rpg)) { |
d62a17ae | 65 | if (PIM_DEBUG_MROUTE_DETAIL) |
66 | zlog_debug( | |
b5469d02 | 67 | "%s: Interface is not configured correctly to handle incoming packet: Could be !pim_ifp, !SM, !RP", |
15569c58 | 68 | __func__); |
b5469d02 | 69 | |
d62a17ae | 70 | return 0; |
71 | } | |
04b40f02 | 72 | |
d62a17ae | 73 | /* |
74 | * If we've received a multicast packet that isn't connected to | |
75 | * us | |
76 | */ | |
a5fa9822 | 77 | if (!pim_if_connected_to_source(ifp, msg->msg_im_src)) { |
d62a17ae | 78 | if (PIM_DEBUG_MROUTE_DETAIL) |
79 | zlog_debug( | |
80 | "%s: Received incoming packet that doesn't originate on our seg", | |
15569c58 | 81 | __func__); |
d62a17ae | 82 | return 0; |
83 | } | |
065bee4b | 84 | |
6fff2cc6 | 85 | memset(&sg, 0, sizeof(sg)); |
a5fa9822 | 86 | sg.src = msg->msg_im_src; |
87 | sg.grp = msg->msg_im_dst; | |
d62a17ae | 88 | |
b5469d02 | 89 | if (!(PIM_I_am_DR(pim_ifp))) { |
b5469d02 | 90 | if (PIM_DEBUG_MROUTE_DETAIL) |
a5fa9822 | 91 | zlog_debug( |
92 | "%s: Interface is not the DR blackholing incoming traffic for %pSG", | |
93 | __func__, &sg); | |
b5469d02 DS |
94 | |
95 | /* | |
96 | * We are not the DR, but we are still receiving packets | |
97 | * Let's blackhole those packets for the moment | |
98 | * As that they will be coming up to the cpu | |
99 | * and causing us to consider them. | |
9e132a49 DS |
100 | * |
101 | * This *will* create a dangling channel_oil | |
102 | * that I see no way to get rid of. Just noting | |
103 | * this for future reference. | |
b5469d02 | 104 | */ |
02434c43 | 105 | up = pim_upstream_find_or_add( |
15569c58 DA |
106 | &sg, ifp, PIM_UPSTREAM_FLAG_MASK_SRC_NOCACHE, __func__); |
107 | pim_upstream_mroute_add(up->channel_oil, __func__); | |
b5469d02 DS |
108 | |
109 | return 0; | |
110 | } | |
111 | ||
d62a17ae | 112 | up = pim_upstream_find_or_add(&sg, ifp, PIM_UPSTREAM_FLAG_MASK_FHR, |
15569c58 | 113 | __func__); |
c29a5806 | 114 | |
d62a17ae | 115 | /* |
116 | * I moved this debug till after the actual add because | |
117 | * I want to take advantage of the up->sg_str being filled in. | |
118 | */ | |
119 | if (PIM_DEBUG_MROUTE) { | |
120 | zlog_debug("%s: Adding a Route %s for WHOLEPKT consumption", | |
15569c58 | 121 | __func__, up->sg_str); |
d62a17ae | 122 | } |
8bfb8b67 | 123 | |
d62a17ae | 124 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); |
19b807ca | 125 | pim_upstream_keep_alive_timer_start(up, pim_ifp->pim->keep_alive_time); |
d62a17ae | 126 | |
127 | up->channel_oil->cc.pktcnt++; | |
d62a17ae | 128 | // resolve mfcc_parent prior to mroute_add in channel_add_oif |
957d93ea | 129 | if (up->rpf.source_nexthop.interface && |
a9338fa4 | 130 | *oil_parent(up->channel_oil) >= MAXVIFS) { |
7984af18 | 131 | pim_upstream_mroute_iif_update(up->channel_oil, __func__); |
d62a17ae | 132 | } |
133 | pim_register_join(up); | |
ac6c8d54 | 134 | /* if we have receiver, inherit from parent */ |
135 | pim_upstream_inherited_olist_decide(pim_ifp->pim, up); | |
59471fb8 | 136 | |
d62a17ae | 137 | return 0; |
e355e30f | 138 | } |
12e41d03 | 139 | |
a5fa9822 | 140 | int pim_mroute_msg_wholepkt(int fd, struct interface *ifp, const char *buf) |
e355e30f | 141 | { |
d62a17ae | 142 | struct pim_interface *pim_ifp; |
6fff2cc6 | 143 | pim_sgaddr sg; |
d62a17ae | 144 | struct pim_rpf *rpg; |
a5fa9822 | 145 | const ipv_hdr *ip_hdr; |
d62a17ae | 146 | struct pim_upstream *up; |
147 | ||
9b29ea95 DS |
148 | pim_ifp = ifp->info; |
149 | ||
a5fa9822 | 150 | ip_hdr = (const ipv_hdr *)buf; |
d62a17ae | 151 | |
6fff2cc6 | 152 | memset(&sg, 0, sizeof(sg)); |
a5fa9822 | 153 | sg.src = IPV_SRC(ip_hdr); |
154 | sg.grp = IPV_DST(ip_hdr); | |
d62a17ae | 155 | |
9b29ea95 | 156 | up = pim_upstream_find(pim_ifp->pim, &sg); |
d62a17ae | 157 | if (!up) { |
6fff2cc6 | 158 | pim_sgaddr star = sg; |
bca160c6 | 159 | star.src = PIMADDR_ANY; |
d62a17ae | 160 | |
9b29ea95 | 161 | up = pim_upstream_find(pim_ifp->pim, &star); |
d62a17ae | 162 | |
448139e7 | 163 | if (up && PIM_UPSTREAM_FLAG_TEST_CAN_BE_LHR(up->flags)) { |
2002dcdb | 164 | up = pim_upstream_add(pim_ifp->pim, &sg, ifp, |
d62a17ae | 165 | PIM_UPSTREAM_FLAG_MASK_SRC_LHR, |
15569c58 | 166 | __func__, NULL); |
d62a17ae | 167 | if (!up) { |
168 | if (PIM_DEBUG_MROUTE) | |
a5fa9822 | 169 | zlog_debug( |
170 | "%s: Unable to create upstream information for %pSG", | |
171 | __func__, &sg); | |
d62a17ae | 172 | return 0; |
173 | } | |
174 | pim_upstream_keep_alive_timer_start( | |
19b807ca | 175 | up, pim_ifp->pim->keep_alive_time); |
9b29ea95 | 176 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
a53a9b3e | 177 | pim_upstream_update_join_desired(pim_ifp->pim, up); |
d62a17ae | 178 | |
179 | if (PIM_DEBUG_MROUTE) | |
180 | zlog_debug("%s: Creating %s upstream on LHR", | |
15569c58 | 181 | __func__, up->sg_str); |
d62a17ae | 182 | return 0; |
183 | } | |
184 | if (PIM_DEBUG_MROUTE_DETAIL) { | |
a5fa9822 | 185 | zlog_debug( |
186 | "%s: Unable to find upstream channel WHOLEPKT%pSG", | |
187 | __func__, &sg); | |
d62a17ae | 188 | } |
189 | return 0; | |
190 | } | |
59471fb8 | 191 | |
957d93ea | 192 | if (!up->rpf.source_nexthop.interface) { |
23fc858a | 193 | if (PIM_DEBUG_PIM_TRACE) |
15569c58 DA |
194 | zlog_debug("%s: up %s RPF is not present", __func__, |
195 | up->sg_str); | |
957d93ea SP |
196 | return 0; |
197 | } | |
198 | ||
d62a17ae | 199 | pim_ifp = up->rpf.source_nexthop.interface->info; |
998af219 | 200 | |
b575a12c | 201 | rpg = pim_ifp ? RP(pim_ifp->pim, sg.grp) : NULL; |
c8ae3ce8 | 202 | |
cc144e8b | 203 | if ((pim_rpf_addr_is_inaddr_any(rpg)) || (!pim_ifp) || |
204 | (!(PIM_I_am_DR(pim_ifp)))) { | |
d62a17ae | 205 | if (PIM_DEBUG_MROUTE) { |
15569c58 | 206 | zlog_debug("%s: Failed Check send packet", __func__); |
d62a17ae | 207 | } |
208 | return 0; | |
209 | } | |
84366c7e | 210 | |
d62a17ae | 211 | /* |
212 | * If we've received a register suppress | |
213 | */ | |
214 | if (!up->t_rs_timer) { | |
6f439a70 | 215 | if (pim_is_grp_ssm(pim_ifp->pim, sg.grp)) { |
d62a17ae | 216 | if (PIM_DEBUG_PIM_REG) |
a5fa9822 | 217 | zlog_debug( |
218 | "%pSG register forward skipped as group is SSM", | |
219 | &sg); | |
d62a17ae | 220 | return 0; |
221 | } | |
2bc31c44 AK |
222 | |
223 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) { | |
224 | if (PIM_DEBUG_PIM_REG) | |
225 | zlog_debug( | |
226 | "%s register forward skipped, not FHR", | |
227 | up->sg_str); | |
228 | return 0; | |
229 | } | |
230 | ||
a5fa9822 | 231 | pim_register_send((uint8_t *)buf + sizeof(ipv_hdr), |
232 | ntohs(IPV_LEN(ip_hdr)) - sizeof(ipv_hdr), | |
d62a17ae | 233 | pim_ifp->primary_address, rpg, 0, up); |
234 | } | |
235 | return 0; | |
e355e30f | 236 | } |
12e41d03 | 237 | |
a5fa9822 | 238 | int pim_mroute_msg_wrongvif(int fd, struct interface *ifp, const kernmsg *msg) |
e355e30f | 239 | { |
d62a17ae | 240 | struct pim_ifchannel *ch; |
241 | struct pim_interface *pim_ifp; | |
6fff2cc6 | 242 | pim_sgaddr sg; |
d62a17ae | 243 | |
6fff2cc6 | 244 | memset(&sg, 0, sizeof(sg)); |
a5fa9822 | 245 | sg.src = msg->msg_im_src; |
246 | sg.grp = msg->msg_im_dst; | |
d62a17ae | 247 | |
248 | /* | |
249 | Send Assert(S,G) on iif as response to WRONGVIF kernel upcall. | |
250 | ||
251 | RFC 4601 4.8.2. PIM-SSM-Only Routers | |
252 | ||
253 | iif is the incoming interface of the packet. | |
254 | if (iif is in inherited_olist(S,G)) { | |
255 | send Assert(S,G) on iif | |
256 | } | |
257 | */ | |
258 | ||
259 | if (!ifp) { | |
260 | if (PIM_DEBUG_MROUTE) | |
a5fa9822 | 261 | zlog_debug( |
262 | "%s: WRONGVIF (S,G)=%pSG could not find input interface for input_vif_index=%d", | |
263 | __func__, &sg, msg->msg_im_vif); | |
d62a17ae | 264 | return -1; |
265 | } | |
12e41d03 | 266 | |
d62a17ae | 267 | pim_ifp = ifp->info; |
268 | if (!pim_ifp) { | |
269 | if (PIM_DEBUG_MROUTE) | |
a5fa9822 | 270 | zlog_debug( |
271 | "%s: WRONGVIF (S,G)=%pSG multicast not enabled on interface %s", | |
272 | __func__, &sg, ifp->name); | |
d62a17ae | 273 | return -2; |
274 | } | |
c29a5806 | 275 | |
d62a17ae | 276 | ch = pim_ifchannel_find(ifp, &sg); |
277 | if (!ch) { | |
6fff2cc6 | 278 | pim_sgaddr star_g = sg; |
d62a17ae | 279 | if (PIM_DEBUG_MROUTE) |
a5fa9822 | 280 | zlog_debug( |
281 | "%s: WRONGVIF (S,G)=%pSG could not find channel on interface %s", | |
282 | __func__, &sg, ifp->name); | |
d62a17ae | 283 | |
bca160c6 | 284 | star_g.src = PIMADDR_ANY; |
d62a17ae | 285 | ch = pim_ifchannel_find(ifp, &star_g); |
286 | if (!ch) { | |
287 | if (PIM_DEBUG_MROUTE) | |
a5fa9822 | 288 | zlog_debug( |
289 | "%s: WRONGVIF (*,G)=%pSG could not find channel on interface %s", | |
290 | __func__, &star_g, ifp->name); | |
d62a17ae | 291 | return -3; |
292 | } | |
293 | } | |
12e41d03 | 294 | |
d62a17ae | 295 | /* |
296 | RFC 4601: 4.6.1. (S,G) Assert Message State Machine | |
297 | ||
298 | Transitions from NoInfo State | |
299 | ||
300 | An (S,G) data packet arrives on interface I, AND | |
301 | CouldAssert(S,G,I)==TRUE An (S,G) data packet arrived on an | |
302 | downstream interface that is in our (S,G) outgoing interface | |
303 | list. We optimistically assume that we will be the assert | |
304 | winner for this (S,G), and so we transition to the "I am Assert | |
305 | Winner" state and perform Actions A1 (below), which will | |
306 | initiate the assert negotiation for (S,G). | |
307 | */ | |
308 | ||
309 | if (ch->ifassert_state != PIM_IFASSERT_NOINFO) { | |
310 | if (PIM_DEBUG_MROUTE) { | |
311 | zlog_debug( | |
312 | "%s: WRONGVIF (S,G)=%s channel is not on Assert NoInfo state for interface %s", | |
15569c58 | 313 | __func__, ch->sg_str, ifp->name); |
d62a17ae | 314 | } |
315 | return -4; | |
316 | } | |
e355e30f | 317 | |
d62a17ae | 318 | if (!PIM_IF_FLAG_TEST_COULD_ASSERT(ch->flags)) { |
319 | if (PIM_DEBUG_MROUTE) { | |
320 | zlog_debug( | |
321 | "%s: WRONGVIF (S,G)=%s interface %s is not downstream for channel", | |
15569c58 | 322 | __func__, ch->sg_str, ifp->name); |
d62a17ae | 323 | } |
324 | return -5; | |
325 | } | |
326 | ||
327 | if (assert_action_a1(ch)) { | |
328 | if (PIM_DEBUG_MROUTE) { | |
329 | zlog_debug( | |
330 | "%s: WRONGVIF (S,G)=%s assert_action_a1 failure on interface %s", | |
15569c58 | 331 | __func__, ch->sg_str, ifp->name); |
d62a17ae | 332 | } |
333 | return -6; | |
334 | } | |
e355e30f | 335 | |
d62a17ae | 336 | return 0; |
e355e30f DS |
337 | } |
338 | ||
a5fa9822 | 339 | int pim_mroute_msg_wrvifwhole(int fd, struct interface *ifp, const char *buf) |
08e1fe76 | 340 | { |
a5fa9822 | 341 | const ipv_hdr *ip_hdr = (const ipv_hdr *)buf; |
d62a17ae | 342 | struct pim_interface *pim_ifp; |
a054f6d7 | 343 | struct pim_instance *pim; |
d62a17ae | 344 | struct pim_ifchannel *ch; |
345 | struct pim_upstream *up; | |
6fff2cc6 DL |
346 | pim_sgaddr star_g; |
347 | pim_sgaddr sg; | |
d62a17ae | 348 | |
fec883d9 DS |
349 | pim_ifp = ifp->info; |
350 | ||
6fff2cc6 | 351 | memset(&sg, 0, sizeof(sg)); |
a5fa9822 | 352 | sg.src = IPV_SRC(ip_hdr); |
353 | sg.grp = IPV_DST(ip_hdr); | |
d62a17ae | 354 | |
355 | ch = pim_ifchannel_find(ifp, &sg); | |
356 | if (ch) { | |
357 | if (PIM_DEBUG_MROUTE) | |
358 | zlog_debug( | |
359 | "WRVIFWHOLE (S,G)=%s found ifchannel on interface %s", | |
360 | ch->sg_str, ifp->name); | |
361 | return -1; | |
362 | } | |
b7ddd2ec | 363 | |
d62a17ae | 364 | star_g = sg; |
bca160c6 | 365 | star_g.src = PIMADDR_ANY; |
a054f6d7 DS |
366 | |
367 | pim = pim_ifp->pim; | |
368 | /* | |
369 | * If the incoming interface is the pimreg, then | |
370 | * we know the callback is associated with a pim register | |
371 | * packet and there is nothing to do here as that | |
372 | * normal pim processing will see the packet and allow | |
373 | * us to do the right thing. | |
374 | */ | |
375 | if (ifp == pim->regiface) { | |
376 | return 0; | |
377 | } | |
08e1fe76 | 378 | |
9b29ea95 | 379 | up = pim_upstream_find(pim_ifp->pim, &sg); |
d62a17ae | 380 | if (up) { |
381 | struct pim_upstream *parent; | |
382 | struct pim_nexthop source; | |
fec883d9 | 383 | struct pim_rpf *rpf = RP(pim_ifp->pim, sg.grp); |
c783249b | 384 | |
385 | /* No RPF or No RPF interface or No mcast on RPF interface */ | |
a5fa9822 | 386 | if (!rpf || !rpf->source_nexthop.interface || |
387 | !rpf->source_nexthop.interface->info) | |
d62a17ae | 388 | return 0; |
389 | ||
390 | /* | |
391 | * If we have received a WRVIFWHOLE and are at this | |
392 | * point, we could be receiving the packet on the *,G | |
393 | * tree, let's check and if so we can safely drop | |
394 | * it. | |
395 | */ | |
9b29ea95 | 396 | parent = pim_upstream_find(pim_ifp->pim, &star_g); |
d62a17ae | 397 | if (parent && parent->rpf.source_nexthop.interface == ifp) |
398 | return 0; | |
399 | ||
400 | pim_ifp = rpf->source_nexthop.interface->info; | |
401 | ||
402 | memset(&source, 0, sizeof(source)); | |
403 | /* | |
404 | * If we are the fhr that means we are getting a callback during | |
405 | * the pimreg period, so I believe we can ignore this packet | |
406 | */ | |
407 | if (!PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)) { | |
aeb67246 DS |
408 | /* |
409 | * No if channel, but upstream we are at the RP. | |
410 | * | |
411 | * This could be a anycast RP too and we may | |
412 | * not have received a register packet from | |
413 | * the source here at all. So gracefully | |
414 | * bow out of doing a nexthop lookup and | |
415 | * setting the SPTBIT to true | |
416 | */ | |
a5fa9822 | 417 | if (!(pim_addr_is_any(up->upstream_register)) && |
aeb67246 | 418 | pim_nexthop_lookup(pim_ifp->pim, &source, |
ade155e1 | 419 | up->upstream_register, 0)) { |
d62a17ae | 420 | pim_register_stop_send(source.interface, &sg, |
421 | pim_ifp->primary_address, | |
422 | up->upstream_register); | |
df766618 DS |
423 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; |
424 | } | |
46dd6edb | 425 | |
9b29ea95 | 426 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
d62a17ae | 427 | if (!up->channel_oil->installed) |
69e3538c | 428 | pim_upstream_mroute_add(up->channel_oil, |
15569c58 | 429 | __func__); |
d62a17ae | 430 | } else { |
d9c9a9ee DS |
431 | if (I_am_RP(pim_ifp->pim, up->sg.grp)) { |
432 | if (pim_nexthop_lookup(pim_ifp->pim, &source, | |
ade155e1 DS |
433 | up->upstream_register, |
434 | 0)) | |
d62a17ae | 435 | pim_register_stop_send( |
436 | source.interface, &sg, | |
437 | pim_ifp->primary_address, | |
438 | up->upstream_register); | |
439 | up->sptbit = PIM_UPSTREAM_SPTBIT_TRUE; | |
440 | } | |
441 | pim_upstream_keep_alive_timer_start( | |
19b807ca | 442 | up, pim_ifp->pim->keep_alive_time); |
9b29ea95 | 443 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
d62a17ae | 444 | pim_mroute_msg_wholepkt(fd, ifp, buf); |
445 | } | |
446 | return 0; | |
447 | } | |
8e38a2cf | 448 | |
d62a17ae | 449 | pim_ifp = ifp->info; |
d62a17ae | 450 | if (pim_if_connected_to_source(ifp, sg.src)) { |
2002dcdb | 451 | up = pim_upstream_add(pim_ifp->pim, &sg, ifp, |
15569c58 DA |
452 | PIM_UPSTREAM_FLAG_MASK_FHR, __func__, |
453 | NULL); | |
d62a17ae | 454 | if (!up) { |
455 | if (PIM_DEBUG_MROUTE) | |
a5fa9822 | 456 | zlog_debug( |
457 | "%pSG: WRONGVIF%s unable to create upstream on interface", | |
458 | &sg, ifp->name); | |
d62a17ae | 459 | return -2; |
460 | } | |
461 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(up->flags); | |
996c9314 LB |
462 | pim_upstream_keep_alive_timer_start( |
463 | up, pim_ifp->pim->keep_alive_time); | |
d62a17ae | 464 | up->channel_oil->cc.pktcnt++; |
465 | pim_register_join(up); | |
9b29ea95 | 466 | pim_upstream_inherited_olist(pim_ifp->pim, up); |
69e3538c AK |
467 | if (!up->channel_oil->installed) |
468 | pim_upstream_mroute_add(up->channel_oil, __func__); | |
d62a17ae | 469 | |
470 | // Send the packet to the RP | |
471 | pim_mroute_msg_wholepkt(fd, ifp, buf); | |
02434c43 DS |
472 | } else { |
473 | up = pim_upstream_add(pim_ifp->pim, &sg, ifp, | |
474 | PIM_UPSTREAM_FLAG_MASK_SRC_NOCACHE, | |
15569c58 | 475 | __func__, NULL); |
02434c43 | 476 | if (!up->channel_oil->installed) |
15569c58 | 477 | pim_upstream_mroute_add(up->channel_oil, __func__); |
d62a17ae | 478 | } |
08e1fe76 | 479 | |
d62a17ae | 480 | return 0; |
08e1fe76 DS |
481 | } |
482 | ||
cc9f21da | 483 | static void mroute_read(struct thread *t) |
12e41d03 | 484 | { |
8ea5d944 | 485 | struct pim_instance *pim; |
d62a17ae | 486 | static long long count; |
487 | char buf[10000]; | |
d62a17ae | 488 | int cont = 1; |
d62a17ae | 489 | int rd; |
90450a3d | 490 | ifindex_t ifindex; |
8ea5d944 | 491 | pim = THREAD_ARG(t); |
d62a17ae | 492 | |
493 | while (cont) { | |
90450a3d DS |
494 | rd = pim_socket_recvfromto(pim->mroute_socket, (uint8_t *)buf, |
495 | sizeof(buf), NULL, NULL, NULL, NULL, | |
496 | &ifindex); | |
61e99c94 | 497 | if (rd <= 0) { |
d62a17ae | 498 | if (errno == EINTR) |
499 | continue; | |
500 | if (errno == EWOULDBLOCK || errno == EAGAIN) | |
501 | break; | |
502 | ||
15569c58 DA |
503 | zlog_warn( |
504 | "%s: failure reading rd=%d: fd=%d: errno=%d: %s", | |
505 | __func__, rd, pim->mroute_socket, errno, | |
506 | safe_strerror(errno)); | |
d62a17ae | 507 | goto done; |
508 | } | |
509 | ||
cc9f21da | 510 | pim_mroute_msg(pim, buf, rd, ifindex); |
d62a17ae | 511 | |
512 | count++; | |
75373cca | 513 | if (count % router->packet_process == 0) |
d62a17ae | 514 | cont = 0; |
515 | } | |
516 | /* Keep reading */ | |
517 | done: | |
8ea5d944 | 518 | mroute_read_on(pim); |
a5fa9822 | 519 | |
520 | return; | |
12e41d03 DL |
521 | } |
522 | ||
8ea5d944 | 523 | static void mroute_read_on(struct pim_instance *pim) |
12e41d03 | 524 | { |
36417fcc | 525 | thread_add_read(router->master, mroute_read, pim, pim->mroute_socket, |
8ea5d944 | 526 | &pim->thread); |
12e41d03 DL |
527 | } |
528 | ||
8ea5d944 | 529 | static void mroute_read_off(struct pim_instance *pim) |
12e41d03 | 530 | { |
8ea5d944 | 531 | THREAD_OFF(pim->thread); |
12e41d03 DL |
532 | } |
533 | ||
6beed987 | 534 | int pim_mroute_socket_enable(struct pim_instance *pim) |
12e41d03 | 535 | { |
d62a17ae | 536 | int fd; |
12e41d03 | 537 | |
0cf6db21 | 538 | frr_with_privs(&pimd_privs) { |
12e41d03 | 539 | |
a5fa9822 | 540 | #if PIM_IPV == 4 |
01b9e3fd | 541 | fd = socket(AF_INET, SOCK_RAW, IPPROTO_IGMP); |
a5fa9822 | 542 | #else |
543 | fd = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6); | |
544 | #endif | |
01b9e3fd DL |
545 | if (fd < 0) { |
546 | zlog_warn("Could not create mroute socket: errno=%d: %s", | |
547 | errno, | |
548 | safe_strerror(errno)); | |
549 | return -2; | |
550 | } | |
e691f179 | 551 | |
466e4e5b | 552 | #ifdef SO_BINDTODEVICE |
01b9e3fd | 553 | if (pim->vrf->vrf_id != VRF_DEFAULT |
633fc9b1 DL |
554 | && setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, |
555 | pim->vrf->name, strlen(pim->vrf->name))) { | |
01b9e3fd DL |
556 | zlog_warn("Could not setsockopt SO_BINDTODEVICE: %s", |
557 | safe_strerror(errno)); | |
558 | close(fd); | |
559 | return -3; | |
560 | } | |
466e4e5b | 561 | #endif |
90450a3d | 562 | |
01b9e3fd | 563 | } |
12e41d03 | 564 | |
cdbfaec5 DS |
565 | pim->mroute_socket = fd; |
566 | if (pim_mroute_set(pim, 1)) { | |
d62a17ae | 567 | zlog_warn( |
568 | "Could not enable mroute on socket fd=%d: errno=%d: %s", | |
569 | fd, errno, safe_strerror(errno)); | |
570 | close(fd); | |
cdbfaec5 | 571 | pim->mroute_socket = -1; |
d62a17ae | 572 | return -3; |
573 | } | |
12e41d03 | 574 | |
6beed987 | 575 | pim->mroute_socket_creation = pim_time_monotonic_sec(); |
b45cefcb | 576 | |
8ea5d944 | 577 | mroute_read_on(pim); |
12e41d03 | 578 | |
d62a17ae | 579 | return 0; |
12e41d03 DL |
580 | } |
581 | ||
6beed987 | 582 | int pim_mroute_socket_disable(struct pim_instance *pim) |
12e41d03 | 583 | { |
cdbfaec5 | 584 | if (pim_mroute_set(pim, 0)) { |
d62a17ae | 585 | zlog_warn( |
586 | "Could not disable mroute on socket fd=%d: errno=%d: %s", | |
405d6357 | 587 | pim->mroute_socket, errno, safe_strerror(errno)); |
d62a17ae | 588 | return -2; |
589 | } | |
590 | ||
6beed987 | 591 | if (close(pim->mroute_socket)) { |
d62a17ae | 592 | zlog_warn("Failure closing mroute socket: fd=%d errno=%d: %s", |
405d6357 | 593 | pim->mroute_socket, errno, safe_strerror(errno)); |
d62a17ae | 594 | return -3; |
595 | } | |
596 | ||
8ea5d944 | 597 | mroute_read_off(pim); |
6beed987 | 598 | pim->mroute_socket = -1; |
d62a17ae | 599 | |
600 | return 0; | |
12e41d03 DL |
601 | } |
602 | ||
603 | /* | |
604 | For each network interface (e.g., physical or a virtual tunnel) that | |
605 | would be used for multicast forwarding, a corresponding multicast | |
606 | interface must be added to the kernel. | |
607 | */ | |
a9338fa4 | 608 | int pim_mroute_add_vif(struct interface *ifp, pim_addr ifaddr, |
d62a17ae | 609 | unsigned char flags) |
12e41d03 | 610 | { |
d62a17ae | 611 | struct pim_interface *pim_ifp = ifp->info; |
a5fa9822 | 612 | pim_vifctl vc; |
d62a17ae | 613 | int err; |
12e41d03 | 614 | |
08f4f901 | 615 | if (PIM_DEBUG_MROUTE) |
15569c58 | 616 | zlog_debug("%s: Add Vif %d (%s[%s])", __func__, |
996c9314 LB |
617 | pim_ifp->mroute_vif_index, ifp->name, |
618 | pim_ifp->pim->vrf->name); | |
08f4f901 | 619 | |
d62a17ae | 620 | memset(&vc, 0, sizeof(vc)); |
a5fa9822 | 621 | vc.vc_vifi = pim_ifp->mroute_vif_index; |
622 | #if PIM_IPV == 4 | |
b3f2bf7c | 623 | #ifdef VIFF_USE_IFINDEX |
a5fa9822 | 624 | vc.vc_lcl_ifindex = ifp->ifindex; |
b3f2bf7c | 625 | #else |
d62a17ae | 626 | if (ifaddr.s_addr == INADDR_ANY) { |
627 | zlog_warn( | |
628 | "%s: unnumbered interfaces are not supported on this platform", | |
15569c58 | 629 | __func__); |
d62a17ae | 630 | return -1; |
631 | } | |
a5fa9822 | 632 | memcpy(&vc.vc_lcl_addr, &ifaddr, sizeof(vc.vc_lcl_addr)); |
633 | #endif | |
634 | #else | |
635 | vc.vc_pifi = ifp->ifindex; | |
b3f2bf7c | 636 | #endif |
a5fa9822 | 637 | vc.vc_flags = flags; |
638 | vc.vc_threshold = PIM_MROUTE_MIN_TTL; | |
639 | vc.vc_rate_limit = 0; | |
d62a17ae | 640 | |
a5fa9822 | 641 | #if PIM_IPV == 4 |
d62a17ae | 642 | #ifdef PIM_DVMRP_TUNNEL |
a5fa9822 | 643 | if (vc.vc_flags & VIFF_TUNNEL) { |
644 | memcpy(&vc.vc_rmt_addr, &vif_remote_addr, | |
645 | sizeof(vc.vc_rmt_addr)); | |
d62a17ae | 646 | } |
a5fa9822 | 647 | #endif |
12e41d03 DL |
648 | #endif |
649 | ||
a5fa9822 | 650 | err = setsockopt(pim_ifp->pim->mroute_socket, PIM_IPPROTO, MRT_ADD_VIF, |
d62a17ae | 651 | (void *)&vc, sizeof(vc)); |
652 | if (err) { | |
d62a17ae | 653 | zlog_warn( |
a5fa9822 | 654 | "%s: failure: setsockopt(fd=%d,PIM_IPPROTO,MRT_ADD_VIF,vif_index=%d,ifaddr=%pPAs,flag=%d): errno=%d: %s", |
15569c58 | 655 | __func__, pim_ifp->pim->mroute_socket, ifp->ifindex, |
a9338fa4 | 656 | &ifaddr, flags, errno, safe_strerror(errno)); |
d62a17ae | 657 | return -2; |
658 | } | |
12e41d03 | 659 | |
d62a17ae | 660 | return 0; |
12e41d03 DL |
661 | } |
662 | ||
ea3d967b | 663 | int pim_mroute_del_vif(struct interface *ifp) |
12e41d03 | 664 | { |
ea3d967b | 665 | struct pim_interface *pim_ifp = ifp->info; |
a5fa9822 | 666 | pim_vifctl vc; |
d62a17ae | 667 | int err; |
668 | ||
ea3d967b | 669 | if (PIM_DEBUG_MROUTE) |
15569c58 | 670 | zlog_debug("%s: Del Vif %d (%s[%s])", __func__, |
996c9314 LB |
671 | pim_ifp->mroute_vif_index, ifp->name, |
672 | pim_ifp->pim->vrf->name); | |
12e41d03 | 673 | |
d62a17ae | 674 | memset(&vc, 0, sizeof(vc)); |
a5fa9822 | 675 | vc.vc_vifi = pim_ifp->mroute_vif_index; |
d62a17ae | 676 | |
a5fa9822 | 677 | err = setsockopt(pim_ifp->pim->mroute_socket, PIM_IPPROTO, MRT_DEL_VIF, |
d62a17ae | 678 | (void *)&vc, sizeof(vc)); |
679 | if (err) { | |
680 | zlog_warn( | |
a5fa9822 | 681 | "%s %s: failure: setsockopt(fd=%d,PIM_IPPROTO,MRT_DEL_VIF,vif_index=%d): errno=%d: %s", |
15569c58 DA |
682 | __FILE__, __func__, pim_ifp->pim->mroute_socket, |
683 | pim_ifp->mroute_vif_index, errno, safe_strerror(errno)); | |
d62a17ae | 684 | return -2; |
685 | } | |
12e41d03 | 686 | |
d62a17ae | 687 | return 0; |
12e41d03 DL |
688 | } |
689 | ||
60eb7e6b AK |
690 | /* |
691 | * Prevent creating MFC entry with OIF=IIF. | |
692 | * | |
693 | * This is a protection against implementation mistakes. | |
694 | * | |
695 | * PIM protocol implicitely ensures loopfree multicast topology. | |
696 | * | |
697 | * IGMP must be protected against adding looped MFC entries created | |
698 | * by both source and receiver attached to the same interface. See | |
699 | * TODO T22. | |
700 | * We shall allow igmp to create upstream when it is DR for the intf. | |
701 | * Assume RP reachable via non DR. | |
702 | */ | |
703 | bool pim_mroute_allow_iif_in_oil(struct channel_oil *c_oil, | |
704 | int oif_index) | |
705 | { | |
706 | #ifdef PIM_ENFORCE_LOOPFREE_MFC | |
707 | struct interface *ifp_out; | |
708 | struct pim_interface *pim_ifp; | |
709 | ||
710 | if (c_oil->up && | |
711 | PIM_UPSTREAM_FLAG_TEST_ALLOW_IIF_IN_OIL(c_oil->up->flags)) | |
712 | return true; | |
713 | ||
714 | ifp_out = pim_if_find_by_vif_index(c_oil->pim, oif_index); | |
715 | if (!ifp_out) | |
716 | return false; | |
717 | pim_ifp = ifp_out->info; | |
718 | if (!pim_ifp) | |
719 | return false; | |
720 | if ((c_oil->oif_flags[oif_index] & PIM_OIF_FLAG_PROTO_IGMP) && | |
721 | PIM_I_am_DR(pim_ifp)) | |
722 | return true; | |
723 | ||
724 | return false; | |
725 | #else | |
726 | return true; | |
727 | #endif | |
728 | } | |
729 | ||
a9338fa4 DL |
730 | static inline void pim_mroute_copy(struct channel_oil *out, |
731 | struct channel_oil *in) | |
5a5f404e AK |
732 | { |
733 | int i; | |
734 | ||
a9338fa4 DL |
735 | *oil_origin(out) = *oil_origin(in); |
736 | *oil_mcastgrp(out) = *oil_mcastgrp(in); | |
737 | *oil_parent(out) = *oil_parent(in); | |
5a5f404e AK |
738 | |
739 | for (i = 0; i < MAXVIFS; ++i) { | |
a9338fa4 DL |
740 | if (*oil_parent(out) == i && |
741 | !pim_mroute_allow_iif_in_oil(in, i)) { | |
742 | oil_if_set(out, i, 0); | |
60eb7e6b AK |
743 | continue; |
744 | } | |
745 | ||
a9338fa4 DL |
746 | if (in->oif_flags[i] & PIM_OIF_FLAG_MUTE) |
747 | oil_if_set(out, i, 0); | |
5a5f404e | 748 | else |
a9338fa4 | 749 | oil_if_set(out, i, oil_if_has(in, i)); |
5a5f404e AK |
750 | } |
751 | } | |
752 | ||
69e3538c AK |
753 | /* This function must not be called directly 0 |
754 | * use pim_upstream_mroute_add or pim_static_mroute_add instead | |
755 | */ | |
756 | static int pim_mroute_add(struct channel_oil *c_oil, const char *name) | |
12e41d03 | 757 | { |
9a0f71c9 | 758 | struct pim_instance *pim = c_oil->pim; |
a9338fa4 | 759 | struct channel_oil tmp_oil[1] = { }; |
d62a17ae | 760 | int err; |
d62a17ae | 761 | |
856e863f DS |
762 | pim->mroute_add_last = pim_time_monotonic_sec(); |
763 | ++pim->mroute_add_events; | |
d62a17ae | 764 | |
5a5f404e AK |
765 | /* Copy the oil to a temporary structure to fixup (without need to |
766 | * later restore) before sending the mroute add to the dataplane | |
767 | */ | |
a9338fa4 | 768 | pim_mroute_copy(tmp_oil, c_oil); |
d3aded99 | 769 | |
d62a17ae | 770 | /* The linux kernel *expects* the incoming |
771 | * vif to be part of the outgoing list | |
772 | * in the case of a (*,G). | |
773 | */ | |
a9338fa4 DL |
774 | if (pim_addr_is_any(*oil_origin(c_oil))) { |
775 | oil_if_set(tmp_oil, *oil_parent(c_oil), 1); | |
76e4825a AK |
776 | } |
777 | ||
d62a17ae | 778 | /* |
779 | * If we have an unresolved cache entry for the S,G | |
780 | * it is owned by the pimreg for the incoming IIF | |
781 | * So set pimreg as the IIF temporarily to cause | |
782 | * the packets to be forwarded. Then set it | |
783 | * to the correct IIF afterwords. | |
784 | */ | |
a9338fa4 DL |
785 | if (!c_oil->installed && !pim_addr_is_any(*oil_origin(c_oil)) |
786 | && *oil_parent(c_oil) != 0) { | |
787 | *oil_parent(tmp_oil) = 0; | |
d62a17ae | 788 | } |
a5fa9822 | 789 | /* For IPv6 MRT_ADD_MFC is defined to MRT6_ADD_MFC */ |
790 | err = setsockopt(pim->mroute_socket, PIM_IPPROTO, MRT_ADD_MFC, | |
a9338fa4 | 791 | &tmp_oil->oil, sizeof(tmp_oil->oil)); |
d62a17ae | 792 | |
793 | if (!err && !c_oil->installed | |
a9338fa4 DL |
794 | && !pim_addr_is_any(*oil_origin(c_oil)) |
795 | && *oil_parent(c_oil) != 0) { | |
796 | *oil_parent(tmp_oil) = *oil_parent(c_oil); | |
a5fa9822 | 797 | err = setsockopt(pim->mroute_socket, PIM_IPPROTO, MRT_ADD_MFC, |
a9338fa4 | 798 | &tmp_oil->oil, sizeof(tmp_oil->oil)); |
42e01756 | 799 | } |
37c3fd98 | 800 | |
d62a17ae | 801 | if (err) { |
802 | zlog_warn( | |
a5fa9822 | 803 | "%s %s: failure: setsockopt(fd=%d,PIM_IPPROTO,MRT_ADD_MFC): errno=%d: %s", |
15569c58 DA |
804 | __FILE__, __func__, pim->mroute_socket, errno, |
805 | safe_strerror(errno)); | |
d62a17ae | 806 | return -2; |
807 | } | |
12e41d03 | 808 | |
d62a17ae | 809 | if (PIM_DEBUG_MROUTE) { |
810 | char buf[1000]; | |
15569c58 DA |
811 | zlog_debug("%s(%s), vrf %s Added Route: %s", __func__, name, |
812 | pim->vrf->name, | |
d62a17ae | 813 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); |
814 | } | |
6a78764e | 815 | |
fe75a058 SP |
816 | if (!c_oil->installed) { |
817 | c_oil->installed = 1; | |
818 | c_oil->mroute_creation = pim_time_monotonic_sec(); | |
819 | } | |
e7cd85bd | 820 | |
d62a17ae | 821 | return 0; |
12e41d03 DL |
822 | } |
823 | ||
7984af18 AK |
824 | static int pim_upstream_get_mroute_iif(struct channel_oil *c_oil, |
825 | const char *name) | |
69e3538c AK |
826 | { |
827 | vifi_t iif = MAXVIFS; | |
69e3538c AK |
828 | struct interface *ifp = NULL; |
829 | struct pim_interface *pim_ifp; | |
830 | struct pim_upstream *up = c_oil->up; | |
831 | ||
832 | if (up) { | |
833 | if (PIM_UPSTREAM_FLAG_TEST_USE_RPT(up->flags)) { | |
834 | if (up->parent) | |
835 | ifp = up->parent->rpf.source_nexthop.interface; | |
836 | } else { | |
837 | ifp = up->rpf.source_nexthop.interface; | |
838 | } | |
839 | if (ifp) { | |
840 | pim_ifp = (struct pim_interface *)ifp->info; | |
841 | if (pim_ifp) | |
842 | iif = pim_ifp->mroute_vif_index; | |
843 | } | |
844 | } | |
7984af18 AK |
845 | return iif; |
846 | } | |
69e3538c | 847 | |
7984af18 AK |
848 | static int pim_upstream_mroute_update(struct channel_oil *c_oil, |
849 | const char *name) | |
850 | { | |
851 | char buf[1000]; | |
69e3538c | 852 | |
a9338fa4 | 853 | if (*oil_parent(c_oil) >= MAXVIFS) { |
69e3538c AK |
854 | /* the c_oil cannot be installed as a mroute yet */ |
855 | if (PIM_DEBUG_MROUTE) | |
856 | zlog_debug( | |
857 | "%s(%s) %s mroute not ready to be installed; %s", | |
7984af18 | 858 | __func__, name, |
69e3538c AK |
859 | pim_channel_oil_dump(c_oil, buf, |
860 | sizeof(buf)), | |
861 | c_oil->installed ? | |
862 | "uninstall" : "skip"); | |
863 | /* if already installed flush it out as we are going to stop | |
864 | * updates to it leaving it in a stale state | |
865 | */ | |
866 | if (c_oil->installed) | |
867 | pim_mroute_del(c_oil, name); | |
868 | /* return success (skipped) */ | |
869 | return 0; | |
870 | } | |
871 | ||
872 | return pim_mroute_add(c_oil, name); | |
873 | } | |
874 | ||
70c86421 AK |
875 | /* IIF associated with SGrpt entries are re-evaluated when the parent |
876 | * (*,G) entries IIF changes | |
877 | */ | |
878 | static void pim_upstream_all_sources_iif_update(struct pim_upstream *up) | |
879 | { | |
880 | struct listnode *listnode; | |
881 | struct pim_upstream *child; | |
882 | ||
883 | for (ALL_LIST_ELEMENTS_RO(up->sources, listnode, | |
884 | child)) { | |
885 | if (PIM_UPSTREAM_FLAG_TEST_USE_RPT(child->flags)) | |
886 | pim_upstream_mroute_iif_update(child->channel_oil, | |
887 | __func__); | |
888 | } | |
889 | } | |
890 | ||
7984af18 AK |
891 | /* In the case of "PIM state machine" added mroutes an upstream entry |
892 | * must be present to decide on the SPT-forwarding vs. RPT-forwarding. | |
893 | */ | |
894 | int pim_upstream_mroute_add(struct channel_oil *c_oil, const char *name) | |
895 | { | |
70c86421 AK |
896 | vifi_t iif; |
897 | ||
898 | iif = pim_upstream_get_mroute_iif(c_oil, name); | |
899 | ||
a9338fa4 DL |
900 | if (*oil_parent(c_oil) != iif) { |
901 | *oil_parent(c_oil) = iif; | |
902 | if (pim_addr_is_any(*oil_origin(c_oil)) && | |
70c86421 AK |
903 | c_oil->up) |
904 | pim_upstream_all_sources_iif_update(c_oil->up); | |
905 | } else { | |
a9338fa4 | 906 | *oil_parent(c_oil) = iif; |
70c86421 | 907 | } |
7984af18 AK |
908 | |
909 | return pim_upstream_mroute_update(c_oil, name); | |
910 | } | |
911 | ||
912 | /* Look for IIF changes and update the dateplane entry only if the IIF | |
913 | * has changed. | |
914 | */ | |
915 | int pim_upstream_mroute_iif_update(struct channel_oil *c_oil, const char *name) | |
916 | { | |
917 | vifi_t iif; | |
918 | char buf[1000]; | |
919 | ||
920 | iif = pim_upstream_get_mroute_iif(c_oil, name); | |
a9338fa4 | 921 | if (*oil_parent(c_oil) == iif) { |
7984af18 AK |
922 | /* no change */ |
923 | return 0; | |
924 | } | |
a9338fa4 | 925 | *oil_parent(c_oil) = iif; |
7984af18 | 926 | |
a9338fa4 | 927 | if (pim_addr_is_any(*oil_origin(c_oil)) && |
70c86421 AK |
928 | c_oil->up) |
929 | pim_upstream_all_sources_iif_update(c_oil->up); | |
930 | ||
7984af18 AK |
931 | if (PIM_DEBUG_MROUTE_DETAIL) |
932 | zlog_debug("%s(%s) %s mroute iif update %d", | |
933 | __func__, name, | |
934 | pim_channel_oil_dump(c_oil, buf, | |
935 | sizeof(buf)), iif); | |
936 | /* XXX: is this hack needed? */ | |
937 | c_oil->oil_inherited_rescan = 1; | |
938 | return pim_upstream_mroute_update(c_oil, name); | |
939 | } | |
940 | ||
69e3538c AK |
941 | int pim_static_mroute_add(struct channel_oil *c_oil, const char *name) |
942 | { | |
943 | return pim_mroute_add(c_oil, name); | |
944 | } | |
945 | ||
7984af18 AK |
946 | void pim_static_mroute_iif_update(struct channel_oil *c_oil, |
947 | int input_vif_index, | |
948 | const char *name) | |
949 | { | |
a9338fa4 | 950 | if (*oil_parent(c_oil) == input_vif_index) |
7984af18 AK |
951 | return; |
952 | ||
a9338fa4 | 953 | *oil_parent(c_oil) = input_vif_index; |
7984af18 AK |
954 | if (input_vif_index == MAXVIFS) |
955 | pim_mroute_del(c_oil, name); | |
956 | else | |
957 | pim_static_mroute_add(c_oil, name); | |
958 | } | |
959 | ||
d62a17ae | 960 | int pim_mroute_del(struct channel_oil *c_oil, const char *name) |
12e41d03 | 961 | { |
9a0f71c9 | 962 | struct pim_instance *pim = c_oil->pim; |
d62a17ae | 963 | int err; |
964 | ||
856e863f DS |
965 | pim->mroute_del_last = pim_time_monotonic_sec(); |
966 | ++pim->mroute_del_events; | |
d62a17ae | 967 | |
968 | if (!c_oil->installed) { | |
969 | if (PIM_DEBUG_MROUTE) { | |
970 | char buf[1000]; | |
971 | zlog_debug( | |
972 | "%s %s: vifi %d for route is %s not installed, do not need to send del req. ", | |
a9338fa4 | 973 | __FILE__, __func__, *oil_parent(c_oil), |
d62a17ae | 974 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); |
975 | } | |
976 | return -2; | |
977 | } | |
12e41d03 | 978 | |
a5fa9822 | 979 | err = setsockopt(pim->mroute_socket, PIM_IPPROTO, MRT_DEL_MFC, |
d62a17ae | 980 | &c_oil->oil, sizeof(c_oil->oil)); |
981 | if (err) { | |
982 | if (PIM_DEBUG_MROUTE) | |
983 | zlog_warn( | |
a5fa9822 | 984 | "%s %s: failure: setsockopt(fd=%d,PIM_IPPROTO,MRT_DEL_MFC): errno=%d: %s", |
15569c58 | 985 | __FILE__, __func__, pim->mroute_socket, errno, |
d62a17ae | 986 | safe_strerror(errno)); |
987 | return -2; | |
988 | } | |
429a291b | 989 | |
d62a17ae | 990 | if (PIM_DEBUG_MROUTE) { |
991 | char buf[1000]; | |
15569c58 DA |
992 | zlog_debug("%s(%s), vrf %s Deleted Route: %s", __func__, name, |
993 | pim->vrf->name, | |
d62fd596 | 994 | pim_channel_oil_dump(c_oil, buf, sizeof(buf))); |
d62a17ae | 995 | } |
781a1745 | 996 | |
d62a17ae | 997 | // Reset kernel installed flag |
998 | c_oil->installed = 0; | |
58302dc7 | 999 | |
d62a17ae | 1000 | return 0; |
12e41d03 | 1001 | } |
3667e8a0 | 1002 | |
d62a17ae | 1003 | void pim_mroute_update_counters(struct channel_oil *c_oil) |
3667e8a0 | 1004 | { |
9a0f71c9 | 1005 | struct pim_instance *pim = c_oil->pim; |
a5fa9822 | 1006 | pim_sioc_sg_req sgreq; |
d62a17ae | 1007 | |
1008 | c_oil->cc.oldpktcnt = c_oil->cc.pktcnt; | |
1009 | c_oil->cc.oldbytecnt = c_oil->cc.bytecnt; | |
1010 | c_oil->cc.oldwrong_if = c_oil->cc.wrong_if; | |
1011 | ||
1012 | if (!c_oil->installed) { | |
19b807ca | 1013 | c_oil->cc.lastused = 100 * pim->keep_alive_time; |
d62a17ae | 1014 | if (PIM_DEBUG_MROUTE) { |
6fff2cc6 | 1015 | pim_sgaddr sg; |
d62a17ae | 1016 | |
a9338fa4 DL |
1017 | sg.src = *oil_origin(c_oil); |
1018 | sg.grp = *oil_mcastgrp(c_oil); | |
98a81d2b DL |
1019 | zlog_debug("Channel%pSG is not installed no need to collect data from kernel", |
1020 | &sg); | |
d62a17ae | 1021 | } |
1022 | return; | |
c7b1183f | 1023 | } |
c7b1183f | 1024 | |
a9338fa4 | 1025 | |
d62a17ae | 1026 | memset(&sgreq, 0, sizeof(sgreq)); |
a5fa9822 | 1027 | |
1028 | #if PIM_IPV == 4 | |
a9338fa4 DL |
1029 | sgreq.src = *oil_origin(c_oil); |
1030 | sgreq.grp = *oil_mcastgrp(c_oil); | |
d62a17ae | 1031 | pim_zlookup_sg_statistics(c_oil); |
a5fa9822 | 1032 | #else |
1033 | sgreq.src = c_oil->oil.mf6cc_origin; | |
1034 | sgreq.grp = c_oil->oil.mf6cc_mcastgrp; | |
1035 | /* TODO Zlookup_sg_statistics for V6 to be added */ | |
1036 | #endif | |
1037 | if (ioctl(pim->mroute_socket, PIM_SIOCGETSGCNT, &sgreq)) { | |
6fff2cc6 | 1038 | pim_sgaddr sg; |
d62a17ae | 1039 | |
a9338fa4 DL |
1040 | sg.src = *oil_origin(c_oil); |
1041 | sg.grp = *oil_mcastgrp(c_oil); | |
d62a17ae | 1042 | |
a5fa9822 | 1043 | zlog_warn( |
1044 | "ioctl(PIM_SIOCGETSGCNT=%lu) failure for (S,G)=%pSG: errno=%d: %s", | |
1045 | (unsigned long)PIM_SIOCGETSGCNT, &sg, errno, | |
1046 | safe_strerror(errno)); | |
d62a17ae | 1047 | return; |
c7b1183f | 1048 | } |
3667e8a0 | 1049 | |
d62a17ae | 1050 | c_oil->cc.pktcnt = sgreq.pktcnt; |
1051 | c_oil->cc.bytecnt = sgreq.bytecnt; | |
1052 | c_oil->cc.wrong_if = sgreq.wrong_if; | |
d62a17ae | 1053 | return; |
3667e8a0 | 1054 | } |