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718e3744 | 1 | /* |
2 | * Address linked list routine. | |
3 | * Copyright (C) 1997, 98 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "prefix.h" | |
25 | #include "linklist.h" | |
26 | #include "if.h" | |
27 | #include "table.h" | |
28 | #include "rib.h" | |
29 | #include "table.h" | |
30 | #include "log.h" | |
0752ef0b | 31 | #include "memory.h" |
718e3744 | 32 | |
82f97584 | 33 | #include "vty.h" |
b84c7253 | 34 | #include "zebra/debug.h" |
718e3744 | 35 | #include "zebra/zserv.h" |
36 | #include "zebra/redistribute.h" | |
eef1fe11 | 37 | #include "zebra/interface.h" |
a1ac18c4 | 38 | #include "zebra/connected.h" |
b6120505 | 39 | #include "zebra/rtadv.h" |
40c7bdb0 | 40 | #include "zebra/zebra_mpls.h" |
9df414fe | 41 | #include "zebra/zebra_errors.h" |
e4876266 | 42 | #include "zebra/zebra_router.h" |
6b0655a2 | 43 | |
02b4805f | 44 | /* communicate the withdrawal of a connected address */ |
d62a17ae | 45 | static void connected_withdraw(struct connected *ifc) |
ca16218d | 46 | { |
d62a17ae | 47 | if (!ifc) |
48 | return; | |
ca16218d | 49 | |
d62a17ae | 50 | /* Update interface address information to protocol daemon. */ |
51 | if (CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL)) { | |
52 | zebra_interface_address_delete_update(ifc->ifp, ifc); | |
ca16218d | 53 | |
d62a17ae | 54 | if (ifc->address->family == AF_INET) |
55 | if_subnet_delete(ifc->ifp, ifc); | |
9db047fc | 56 | |
11461c63 | 57 | connected_down(ifc->ifp, ifc); |
ca16218d | 58 | |
d62a17ae | 59 | UNSET_FLAG(ifc->conf, ZEBRA_IFC_REAL); |
60 | } | |
ca16218d | 61 | |
d62a17ae | 62 | /* The address is not in the kernel anymore, so clear the flag */ |
63 | UNSET_FLAG(ifc->conf, ZEBRA_IFC_QUEUED); | |
f7f740fe | 64 | |
d62a17ae | 65 | if (!CHECK_FLAG(ifc->conf, ZEBRA_IFC_CONFIGURED)) { |
66 | listnode_delete(ifc->ifp->connected, ifc); | |
721c0857 | 67 | connected_free(&ifc); |
d62a17ae | 68 | } |
ca16218d | 69 | } |
70 | ||
d62a17ae | 71 | static void connected_announce(struct interface *ifp, struct connected *ifc) |
ca16218d | 72 | { |
d62a17ae | 73 | if (!ifc) |
74 | return; | |
75 | ||
b0fa6f6a CS |
76 | if (!if_is_loopback(ifp) && ifc->address->family == AF_INET && |
77 | !IS_ZEBRA_IF_VRF(ifp)) { | |
12256b84 | 78 | if (ifc->address->prefixlen == IPV4_MAX_BITLEN) |
d62a17ae | 79 | SET_FLAG(ifc->flags, ZEBRA_IFA_UNNUMBERED); |
80 | else | |
81 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_UNNUMBERED); | |
82 | } | |
83 | ||
84 | listnode_add(ifp->connected, ifc); | |
85 | ||
86 | /* Update interface address information to protocol daemon. */ | |
87 | if (ifc->address->family == AF_INET) | |
88 | if_subnet_add(ifp, ifc); | |
89 | ||
90 | zebra_interface_address_add_update(ifp, ifc); | |
91 | ||
92 | if (if_is_operative(ifp)) { | |
ae87977c | 93 | connected_up(ifp, ifc); |
d62a17ae | 94 | } |
ca16218d | 95 | } |
6b0655a2 | 96 | |
718e3744 | 97 | /* If same interface address is already exist... */ |
abffde07 DL |
98 | struct connected *connected_check(struct interface *ifp, |
99 | union prefixconstptr pu) | |
718e3744 | 100 | { |
abffde07 | 101 | const struct prefix *p = pu.p; |
d62a17ae | 102 | struct connected *ifc; |
103 | struct listnode *node; | |
718e3744 | 104 | |
d62a17ae | 105 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) |
106 | if (prefix_same(ifc->address, p)) | |
107 | return ifc; | |
718e3744 | 108 | |
d62a17ae | 109 | return NULL; |
718e3744 | 110 | } |
111 | ||
abffde07 DL |
112 | /* same, but with peer address */ |
113 | struct connected *connected_check_ptp(struct interface *ifp, | |
114 | union prefixconstptr pu, | |
115 | union prefixconstptr du) | |
116 | { | |
117 | const struct prefix *p = pu.p; | |
118 | const struct prefix *d = du.p; | |
119 | struct connected *ifc; | |
120 | struct listnode *node; | |
121 | ||
abffde07 DL |
122 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { |
123 | if (!prefix_same(ifc->address, p)) | |
124 | continue; | |
125 | if (!CONNECTED_PEER(ifc) && !d) | |
126 | return ifc; | |
127 | if (CONNECTED_PEER(ifc) && d | |
128 | && prefix_same(ifc->destination, d)) | |
129 | return ifc; | |
130 | } | |
131 | ||
132 | return NULL; | |
133 | } | |
134 | ||
02b4805f | 135 | /* Check if two ifc's describe the same address in the same state */ |
d62a17ae | 136 | static int connected_same(struct connected *ifc1, struct connected *ifc2) |
74ecdc9e | 137 | { |
d62a17ae | 138 | if (ifc1->ifp != ifc2->ifp) |
139 | return 0; | |
140 | ||
0f3af738 JW |
141 | if (ifc1->flags != ifc2->flags) |
142 | return 0; | |
143 | ||
144 | if (ifc1->conf != ifc2->conf) | |
145 | return 0; | |
146 | ||
d62a17ae | 147 | if (ifc1->destination) |
148 | if (!ifc2->destination) | |
149 | return 0; | |
150 | if (ifc2->destination) | |
151 | if (!ifc1->destination) | |
152 | return 0; | |
153 | ||
154 | if (ifc1->destination && ifc2->destination) | |
155 | if (!prefix_same(ifc1->destination, ifc2->destination)) | |
156 | return 0; | |
157 | ||
d62a17ae | 158 | return 1; |
74ecdc9e PJ |
159 | } |
160 | ||
d7f5dad6 CF |
161 | /* Handle changes to addresses and send the neccesary announcements |
162 | * to clients. */ | |
d62a17ae | 163 | static void connected_update(struct interface *ifp, struct connected *ifc) |
74ecdc9e | 164 | { |
d62a17ae | 165 | struct connected *current; |
166 | ||
167 | /* Check same connected route. */ | |
abffde07 DL |
168 | current = connected_check_ptp(ifp, ifc->address, ifc->destination); |
169 | if (current) { | |
d62a17ae | 170 | if (CHECK_FLAG(current->conf, ZEBRA_IFC_CONFIGURED)) |
171 | SET_FLAG(ifc->conf, ZEBRA_IFC_CONFIGURED); | |
172 | ||
173 | /* Avoid spurious withdraws, this might be just the kernel | |
174 | * 'reflecting' | |
175 | * back an address we have already added. | |
176 | */ | |
177 | if (connected_same(current, ifc)) { | |
178 | /* nothing to do */ | |
721c0857 | 179 | connected_free(&ifc); |
d62a17ae | 180 | return; |
181 | } | |
182 | ||
183 | /* Clear the configured flag on the old ifc, so it will be freed | |
184 | * by | |
185 | * connected withdraw. */ | |
186 | UNSET_FLAG(current->conf, ZEBRA_IFC_CONFIGURED); | |
187 | connected_withdraw( | |
188 | current); /* implicit withdraw - freebsd does this */ | |
189 | } | |
190 | ||
191 | /* If the connected is new or has changed, announce it, if it is usable | |
192 | */ | |
193 | if (CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL)) | |
194 | connected_announce(ifp, ifc); | |
74ecdc9e PJ |
195 | } |
196 | ||
718e3744 | 197 | /* Called from if_up(). */ |
ae87977c | 198 | void connected_up(struct interface *ifp, struct connected *ifc) |
718e3744 | 199 | { |
ae87977c | 200 | afi_t afi; |
b08dcc3f | 201 | struct prefix p; |
fd36be7e | 202 | struct nexthop nh = { |
4a7371e9 DS |
203 | .type = NEXTHOP_TYPE_IFINDEX, |
204 | .ifindex = ifp->ifindex, | |
a36898e7 | 205 | .vrf_id = ifp->vrf_id, |
fd36be7e | 206 | }; |
56e78254 | 207 | struct zebra_vrf *zvrf; |
cde1af84 | 208 | uint32_t metric; |
e4876266 | 209 | uint32_t flags = 0; |
92980561 DS |
210 | uint32_t count = 0; |
211 | struct listnode *cnode; | |
212 | struct connected *c; | |
d62a17ae | 213 | |
a36898e7 | 214 | zvrf = zebra_vrf_lookup_by_id(ifp->vrf_id); |
56e78254 | 215 | if (!zvrf) { |
15569c58 DA |
216 | flog_err( |
217 | EC_ZEBRA_VRF_NOT_FOUND, | |
218 | "%s: Received Up for interface but no associated zvrf: %d", | |
219 | __func__, ifp->vrf_id); | |
56e78254 DS |
220 | return; |
221 | } | |
d62a17ae | 222 | if (!CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL)) |
223 | return; | |
224 | ||
e3d901f8 MS |
225 | /* Ensure 'down' flag is cleared */ |
226 | UNSET_FLAG(ifc->conf, ZEBRA_IFC_DOWN); | |
227 | ||
b08dcc3f | 228 | prefix_copy(&p, CONNECTED_PREFIX(ifc)); |
d62a17ae | 229 | |
230 | /* Apply mask to the network. */ | |
231 | apply_mask(&p); | |
232 | ||
ae87977c DS |
233 | afi = family2afi(p.family); |
234 | ||
235 | switch (afi) { | |
236 | case AFI_IP: | |
237 | /* | |
238 | * In case of connected address is 0.0.0.0/0 we treat it tunnel | |
239 | * address. | |
240 | */ | |
241 | if (prefix_ipv4_any((struct prefix_ipv4 *)&p)) | |
242 | return; | |
243 | break; | |
244 | case AFI_IP6: | |
70bc8385 | 245 | #ifndef GNU_LINUX |
ae87977c DS |
246 | /* XXX: It is already done by rib_bogus_ipv6 within rib_add */ |
247 | if (IN6_IS_ADDR_UNSPECIFIED(&p.u.prefix6)) | |
248 | return; | |
249 | #endif | |
250 | break; | |
251 | default: | |
e914ccbe | 252 | flog_warn(EC_ZEBRA_CONNECTED_AFI_UNKNOWN, |
9df414fe | 253 | "Received unknown AFI: %s", afi2str(afi)); |
d62a17ae | 254 | return; |
ae87977c DS |
255 | break; |
256 | } | |
d62a17ae | 257 | |
cde1af84 AK |
258 | metric = (ifc->metric < (uint32_t)METRIC_MAX) ? |
259 | ifc->metric : ifp->metric; | |
d62a17ae | 260 | |
e4876266 DS |
261 | /* |
262 | * Since we are hand creating the connected routes | |
263 | * in our main routing table, *if* we are working | |
264 | * in an offloaded environment then we need to | |
265 | * pretend like the route is offloaded so everything | |
266 | * else will work | |
267 | */ | |
268 | if (zrouter.asic_offloaded) | |
269 | flags |= ZEBRA_FLAG_OFFLOADED; | |
270 | ||
92980561 DS |
271 | /* |
272 | * It's possible to add the same network and mask | |
273 | * to an interface over and over. This would | |
274 | * result in an equivalent number of connected | |
275 | * routes. Just add one connected route in | |
276 | * for all the addresses on an interface that | |
277 | * resolve to the same network and mask | |
278 | */ | |
279 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) { | |
b08dcc3f | 280 | struct prefix cp; |
92980561 | 281 | |
b08dcc3f | 282 | prefix_copy(&cp, CONNECTED_PREFIX(c)); |
92980561 DS |
283 | apply_mask(&cp); |
284 | ||
e3d901f8 MS |
285 | if (prefix_same(&cp, &p) && |
286 | !CHECK_FLAG(c->conf, ZEBRA_IFC_DOWN)) | |
92980561 DS |
287 | count++; |
288 | ||
289 | if (count >= 2) | |
290 | return; | |
291 | } | |
292 | ||
e4876266 DS |
293 | rib_add(afi, SAFI_UNICAST, zvrf->vrf->vrf_id, ZEBRA_ROUTE_CONNECT, 0, |
294 | flags, &p, NULL, &nh, 0, zvrf->table_id, metric, 0, 0, 0); | |
295 | ||
296 | rib_add(afi, SAFI_MULTICAST, zvrf->vrf->vrf_id, ZEBRA_ROUTE_CONNECT, 0, | |
297 | flags, &p, NULL, &nh, 0, zvrf->table_id, metric, 0, 0, 0); | |
d62a17ae | 298 | |
d62a17ae | 299 | /* Schedule LSP forwarding entries for processing, if appropriate. */ |
56e78254 | 300 | if (zvrf->vrf->vrf_id == VRF_DEFAULT) { |
2dbe669b | 301 | if (IS_ZEBRA_DEBUG_MPLS) |
996c9314 | 302 | zlog_debug( |
2dbe669b DA |
303 | "%u: IF %s IP %pFX address add/up, scheduling MPLS processing", |
304 | zvrf->vrf->vrf_id, ifp->name, &p); | |
56e78254 | 305 | mpls_mark_lsps_for_processing(zvrf, &p); |
d62a17ae | 306 | } |
718e3744 | 307 | } |
308 | ||
309 | /* Add connected IPv4 route to the interface. */ | |
9c86ee1e MS |
310 | void connected_add_ipv4(struct interface *ifp, int flags, |
311 | const struct in_addr *addr, uint16_t prefixlen, | |
312 | const struct in_addr *dest, const char *label, | |
313 | uint32_t metric) | |
718e3744 | 314 | { |
d62a17ae | 315 | struct prefix_ipv4 *p; |
316 | struct connected *ifc; | |
317 | ||
318 | if (ipv4_martian(addr)) | |
319 | return; | |
320 | ||
321 | /* Make connected structure. */ | |
322 | ifc = connected_new(); | |
323 | ifc->ifp = ifp; | |
324 | ifc->flags = flags; | |
cde1af84 | 325 | ifc->metric = metric; |
d62a17ae | 326 | /* If we get a notification from the kernel, |
327 | * we can safely assume the address is known to the kernel */ | |
328 | SET_FLAG(ifc->conf, ZEBRA_IFC_QUEUED); | |
329 | ||
330 | /* Allocate new connected address. */ | |
331 | p = prefix_ipv4_new(); | |
332 | p->family = AF_INET; | |
333 | p->prefix = *addr; | |
936fbaef DA |
334 | p->prefixlen = |
335 | CHECK_FLAG(flags, ZEBRA_IFA_PEER) ? IPV4_MAX_BITLEN : prefixlen; | |
d62a17ae | 336 | ifc->address = (struct prefix *)p; |
337 | ||
0f3af738 JW |
338 | /* If there is a peer address. */ |
339 | if (CONNECTED_PEER(ifc)) { | |
d62a17ae | 340 | /* validate the destination address */ |
0f3af738 JW |
341 | if (dest) { |
342 | p = prefix_ipv4_new(); | |
343 | p->family = AF_INET; | |
344 | p->prefix = *dest; | |
345 | p->prefixlen = prefixlen; | |
346 | ifc->destination = (struct prefix *)p; | |
347 | ||
348 | if (IPV4_ADDR_SAME(addr, dest)) | |
9df414fe | 349 | flog_warn( |
e914ccbe | 350 | EC_ZEBRA_IFACE_SAME_LOCAL_AS_PEER, |
ad6f7449 | 351 | "interface %s has same local and peer address %pI4, routing protocols may malfunction", |
9bcef951 | 352 | ifp->name, addr); |
d62a17ae | 353 | } else { |
9df414fe | 354 | zlog_debug( |
ad6f7449 | 355 | "%s called for interface %s with peer flag set, but no peer address supplied", |
d62a17ae | 356 | __func__, ifp->name); |
357 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER); | |
358 | } | |
e4529636 AS |
359 | } |
360 | ||
0f3af738 | 361 | /* no destination address was supplied */ |
936fbaef | 362 | if (!dest && (prefixlen == IPV4_MAX_BITLEN) && if_is_pointopoint(ifp)) |
0f3af738 | 363 | zlog_debug( |
ad6f7449 | 364 | "PtP interface %s with addr %pI4/%d needs a peer address", |
9bcef951 | 365 | ifp->name, addr, prefixlen); |
0f3af738 | 366 | |
d62a17ae | 367 | /* Label of this address. */ |
368 | if (label) | |
369 | ifc->label = XSTRDUP(MTYPE_CONNECTED_LABEL, label); | |
718e3744 | 370 | |
d62a17ae | 371 | /* For all that I know an IPv4 address is always ready when we receive |
372 | * the notification. So it should be safe to set the REAL flag here. */ | |
373 | SET_FLAG(ifc->conf, ZEBRA_IFC_REAL); | |
718e3744 | 374 | |
d62a17ae | 375 | connected_update(ifp, ifc); |
718e3744 | 376 | } |
377 | ||
11461c63 | 378 | void connected_down(struct interface *ifp, struct connected *ifc) |
718e3744 | 379 | { |
11461c63 | 380 | afi_t afi; |
d62a17ae | 381 | struct prefix p; |
fd36be7e | 382 | struct nexthop nh = { |
4a7371e9 DS |
383 | .type = NEXTHOP_TYPE_IFINDEX, |
384 | .ifindex = ifp->ifindex, | |
a36898e7 | 385 | .vrf_id = ifp->vrf_id, |
fd36be7e | 386 | }; |
56e78254 | 387 | struct zebra_vrf *zvrf; |
92980561 DS |
388 | uint32_t count = 0; |
389 | struct listnode *cnode; | |
390 | struct connected *c; | |
56e78254 | 391 | |
a36898e7 | 392 | zvrf = zebra_vrf_lookup_by_id(ifp->vrf_id); |
56e78254 | 393 | if (!zvrf) { |
15569c58 DA |
394 | flog_err( |
395 | EC_ZEBRA_VRF_NOT_FOUND, | |
e3d901f8 | 396 | "%s: Received Down for interface but no associated zvrf: %d", |
15569c58 | 397 | __func__, ifp->vrf_id); |
56e78254 DS |
398 | return; |
399 | } | |
718e3744 | 400 | |
d62a17ae | 401 | if (!CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL)) |
402 | return; | |
718e3744 | 403 | |
e3d901f8 MS |
404 | /* Skip if we've already done this; this can happen if we have a |
405 | * config change that takes an interface down, then we receive kernel | |
406 | * notifications about the downed interface and its addresses. | |
407 | */ | |
408 | if (CHECK_FLAG(ifc->conf, ZEBRA_IFC_DOWN)) { | |
409 | if (IS_ZEBRA_DEBUG_RIB) | |
410 | zlog_debug("%s: ifc %p, %pFX already DOWN", | |
411 | __func__, ifc, ifc->address); | |
412 | return; | |
413 | } | |
414 | ||
b08dcc3f | 415 | prefix_copy(&p, CONNECTED_PREFIX(ifc)); |
718e3744 | 416 | |
d62a17ae | 417 | /* Apply mask to the network. */ |
418 | apply_mask(&p); | |
718e3744 | 419 | |
11461c63 DS |
420 | afi = family2afi(p.family); |
421 | ||
422 | switch (afi) { | |
423 | case AFI_IP: | |
424 | /* | |
425 | * In case of connected address is 0.0.0.0/0 we treat it tunnel | |
426 | * address. | |
427 | */ | |
428 | if (prefix_ipv4_any((struct prefix_ipv4 *)&p)) | |
429 | return; | |
430 | break; | |
431 | case AFI_IP6: | |
432 | if (IN6_IS_ADDR_UNSPECIFIED(&p.u.prefix6)) | |
433 | return; | |
434 | break; | |
435 | default: | |
14a4d9d0 | 436 | zlog_warn("Unknown AFI: %s", afi2str(afi)); |
11461c63 DS |
437 | break; |
438 | } | |
718e3744 | 439 | |
e3d901f8 MS |
440 | /* Mark the address as 'down' */ |
441 | SET_FLAG(ifc->conf, ZEBRA_IFC_DOWN); | |
442 | ||
92980561 DS |
443 | /* |
444 | * It's possible to have X number of addresses | |
445 | * on a interface that all resolve to the same | |
446 | * network and mask. Find them and just | |
447 | * allow the deletion when are removing the last | |
448 | * one. | |
449 | */ | |
450 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, c)) { | |
451 | struct prefix cp; | |
452 | ||
b08dcc3f | 453 | prefix_copy(&cp, CONNECTED_PREFIX(c)); |
92980561 DS |
454 | apply_mask(&cp); |
455 | ||
e3d901f8 MS |
456 | if (prefix_same(&p, &cp) && |
457 | !CHECK_FLAG(c->conf, ZEBRA_IFC_DOWN)) | |
92980561 DS |
458 | count++; |
459 | ||
e3d901f8 | 460 | if (count >= 1) |
92980561 DS |
461 | return; |
462 | } | |
463 | ||
11461c63 DS |
464 | /* |
465 | * Same logic as for connected_up(): push the changes into the | |
466 | * head. | |
467 | */ | |
bc541126 | 468 | rib_delete(afi, SAFI_UNICAST, zvrf->vrf->vrf_id, ZEBRA_ROUTE_CONNECT, 0, |
3ceae22b | 469 | 0, &p, NULL, &nh, 0, zvrf->table_id, 0, 0, false); |
718e3744 | 470 | |
56e78254 | 471 | rib_delete(afi, SAFI_MULTICAST, zvrf->vrf->vrf_id, ZEBRA_ROUTE_CONNECT, |
3ceae22b | 472 | 0, 0, &p, NULL, &nh, 0, zvrf->table_id, 0, 0, false); |
42cb6b66 | 473 | |
d62a17ae | 474 | /* Schedule LSP forwarding entries for processing, if appropriate. */ |
56e78254 | 475 | if (zvrf->vrf->vrf_id == VRF_DEFAULT) { |
2dbe669b | 476 | if (IS_ZEBRA_DEBUG_MPLS) |
996c9314 | 477 | zlog_debug( |
2dbe669b DA |
478 | "%u: IF %s IP %pFX address down, scheduling MPLS processing", |
479 | zvrf->vrf->vrf_id, ifp->name, &p); | |
56e78254 | 480 | mpls_mark_lsps_for_processing(zvrf, &p); |
d62a17ae | 481 | } |
718e3744 | 482 | } |
483 | ||
dc7cd304 DS |
484 | static void connected_delete_helper(struct connected *ifc, struct prefix *p) |
485 | { | |
486 | struct interface *ifp; | |
487 | ||
488 | if (!ifc) | |
489 | return; | |
490 | ifp = ifc->ifp; | |
491 | ||
492 | connected_withdraw(ifc); | |
493 | ||
dc7cd304 | 494 | /* Schedule LSP forwarding entries for processing, if appropriate. */ |
a36898e7 | 495 | if (ifp->vrf_id == VRF_DEFAULT) { |
2dbe669b | 496 | if (IS_ZEBRA_DEBUG_MPLS) |
996c9314 | 497 | zlog_debug( |
2dbe669b DA |
498 | "%u: IF %s IP %pFX address delete, scheduling MPLS processing", |
499 | ifp->vrf_id, ifp->name, p); | |
a36898e7 | 500 | mpls_mark_lsps_for_processing(vrf_info_lookup(ifp->vrf_id), p); |
dc7cd304 DS |
501 | } |
502 | } | |
503 | ||
718e3744 | 504 | /* Delete connected IPv4 route to the interface. */ |
d62a17ae | 505 | void connected_delete_ipv4(struct interface *ifp, int flags, |
9c86ee1e MS |
506 | const struct in_addr *addr, uint16_t prefixlen, |
507 | const struct in_addr *dest) | |
718e3744 | 508 | { |
dc7cd304 | 509 | struct prefix p, d; |
d62a17ae | 510 | struct connected *ifc; |
511 | ||
dc7cd304 | 512 | memset(&p, 0, sizeof(struct prefix)); |
d62a17ae | 513 | p.family = AF_INET; |
dc7cd304 | 514 | p.u.prefix4 = *addr; |
936fbaef DA |
515 | p.prefixlen = |
516 | CHECK_FLAG(flags, ZEBRA_IFA_PEER) ? IPV4_MAX_BITLEN : prefixlen; | |
abffde07 | 517 | |
0f3af738 | 518 | if (dest) { |
dc7cd304 | 519 | memset(&d, 0, sizeof(struct prefix)); |
abffde07 | 520 | d.family = AF_INET; |
0f3af738 | 521 | d.u.prefix4 = *dest; |
abffde07 | 522 | d.prefixlen = prefixlen; |
dc7cd304 | 523 | ifc = connected_check_ptp(ifp, &p, &d); |
abffde07 | 524 | } else |
dc7cd304 | 525 | ifc = connected_check_ptp(ifp, &p, NULL); |
d62a17ae | 526 | |
dc7cd304 | 527 | connected_delete_helper(ifc, &p); |
718e3744 | 528 | } |
529 | ||
718e3744 | 530 | /* Add connected IPv6 route to the interface. */ |
9c86ee1e MS |
531 | void connected_add_ipv6(struct interface *ifp, int flags, |
532 | const struct in6_addr *addr, | |
533 | const struct in6_addr *dest, uint16_t prefixlen, | |
cde1af84 | 534 | const char *label, uint32_t metric) |
718e3744 | 535 | { |
d62a17ae | 536 | struct prefix_ipv6 *p; |
537 | struct connected *ifc; | |
538 | ||
539 | if (ipv6_martian(addr)) | |
540 | return; | |
541 | ||
542 | /* Make connected structure. */ | |
543 | ifc = connected_new(); | |
544 | ifc->ifp = ifp; | |
545 | ifc->flags = flags; | |
cde1af84 | 546 | ifc->metric = metric; |
d62a17ae | 547 | /* If we get a notification from the kernel, |
548 | * we can safely assume the address is known to the kernel */ | |
549 | SET_FLAG(ifc->conf, ZEBRA_IFC_QUEUED); | |
550 | ||
551 | /* Allocate new connected address. */ | |
552 | p = prefix_ipv6_new(); | |
553 | p->family = AF_INET6; | |
554 | IPV6_ADDR_COPY(&p->prefix, addr); | |
555 | p->prefixlen = prefixlen; | |
556 | ifc->address = (struct prefix *)p; | |
557 | ||
2a855763 DS |
558 | /* Add global ipv6 address to the RA prefix list */ |
559 | if (!IN6_IS_ADDR_LINKLOCAL(&p->prefix)) | |
560 | rtadv_add_prefix(ifp->info, p); | |
561 | ||
0f3af738 | 562 | if (dest) { |
60c0687a DS |
563 | p = prefix_ipv6_new(); |
564 | p->family = AF_INET6; | |
0f3af738 | 565 | IPV6_ADDR_COPY(&p->prefix, dest); |
60c0687a DS |
566 | p->prefixlen = prefixlen; |
567 | ifc->destination = (struct prefix *)p; | |
f52d0a1a DS |
568 | } else { |
569 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_PEER)) { | |
9df414fe | 570 | zlog_debug( |
ad6f7449 | 571 | "%s called for interface %s with peer flag set, but no peer address supplied", |
9df414fe | 572 | __func__, ifp->name); |
f52d0a1a DS |
573 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER); |
574 | } | |
60c0687a DS |
575 | } |
576 | ||
d62a17ae | 577 | /* Label of this address. */ |
578 | if (label) | |
579 | ifc->label = XSTRDUP(MTYPE_CONNECTED_LABEL, label); | |
580 | ||
581 | /* On Linux, we only get here when DAD is complete, therefore we can set | |
582 | * ZEBRA_IFC_REAL. | |
583 | * | |
584 | * On BSD, there currently doesn't seem to be a way to check for | |
585 | * completion of | |
586 | * DAD, so we replicate the old behaviour and set ZEBRA_IFC_REAL, | |
587 | * although DAD | |
588 | * might still be running. | |
589 | */ | |
590 | SET_FLAG(ifc->conf, ZEBRA_IFC_REAL); | |
591 | connected_update(ifp, ifc); | |
718e3744 | 592 | } |
593 | ||
9c86ee1e MS |
594 | void connected_delete_ipv6(struct interface *ifp, |
595 | const struct in6_addr *address, | |
596 | const struct in6_addr *dest, uint16_t prefixlen) | |
718e3744 | 597 | { |
60c0687a | 598 | struct prefix p, d; |
d62a17ae | 599 | struct connected *ifc; |
600 | ||
dc7cd304 | 601 | memset(&p, 0, sizeof(struct prefix)); |
d62a17ae | 602 | p.family = AF_INET6; |
dc7cd304 | 603 | memcpy(&p.u.prefix6, address, sizeof(struct in6_addr)); |
d62a17ae | 604 | p.prefixlen = prefixlen; |
605 | ||
2a855763 DS |
606 | /* Delete global ipv6 address from RA prefix list */ |
607 | if (!IN6_IS_ADDR_LINKLOCAL(&p.u.prefix6)) | |
608 | rtadv_delete_prefix(ifp->info, &p); | |
609 | ||
0f3af738 | 610 | if (dest) { |
60c0687a DS |
611 | memset(&d, 0, sizeof(struct prefix)); |
612 | d.family = AF_INET6; | |
0f3af738 | 613 | IPV6_ADDR_COPY(&d.u.prefix6, dest); |
60c0687a DS |
614 | d.prefixlen = prefixlen; |
615 | ifc = connected_check_ptp(ifp, &p, &d); | |
616 | } else | |
617 | ifc = connected_check_ptp(ifp, &p, NULL); | |
d62a17ae | 618 | |
dc7cd304 | 619 | connected_delete_helper(ifc, &p); |
718e3744 | 620 | } |
d44ca835 | 621 | |
d62a17ae | 622 | int connected_is_unnumbered(struct interface *ifp) |
d44ca835 | 623 | { |
d62a17ae | 624 | struct connected *connected; |
625 | struct listnode *node; | |
626 | ||
627 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { | |
628 | if (CHECK_FLAG(connected->conf, ZEBRA_IFC_REAL) | |
629 | && connected->address->family == AF_INET) | |
630 | return CHECK_FLAG(connected->flags, | |
631 | ZEBRA_IFA_UNNUMBERED); | |
632 | } | |
a79fdd65 | 633 | return 0; |
d44ca835 | 634 | } |