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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" |
4a1ab8e4 | 32 | #include "zebra_memory.h" |
718e3744 | 33 | |
82f97584 | 34 | #include "vty.h" |
b84c7253 | 35 | #include "zebra/debug.h" |
718e3744 | 36 | #include "zebra/zserv.h" |
37 | #include "zebra/redistribute.h" | |
eef1fe11 | 38 | #include "zebra/interface.h" |
a1ac18c4 | 39 | #include "zebra/connected.h" |
b6120505 | 40 | #include "zebra/rtadv.h" |
40c7bdb0 | 41 | #include "zebra/zebra_mpls.h" |
939fba27 | 42 | #include "zebra/debug.h" |
9df414fe | 43 | #include "zebra/zebra_errors.h" |
6b0655a2 | 44 | |
02b4805f | 45 | /* communicate the withdrawal of a connected address */ |
d62a17ae | 46 | static void connected_withdraw(struct connected *ifc) |
ca16218d | 47 | { |
d62a17ae | 48 | if (!ifc) |
49 | return; | |
ca16218d | 50 | |
d62a17ae | 51 | /* Update interface address information to protocol daemon. */ |
52 | if (CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL)) { | |
53 | zebra_interface_address_delete_update(ifc->ifp, ifc); | |
ca16218d | 54 | |
d62a17ae | 55 | if (ifc->address->family == AF_INET) |
56 | if_subnet_delete(ifc->ifp, ifc); | |
9db047fc | 57 | |
11461c63 | 58 | connected_down(ifc->ifp, ifc); |
ca16218d | 59 | |
d62a17ae | 60 | UNSET_FLAG(ifc->conf, ZEBRA_IFC_REAL); |
61 | } | |
ca16218d | 62 | |
d62a17ae | 63 | /* The address is not in the kernel anymore, so clear the flag */ |
64 | UNSET_FLAG(ifc->conf, ZEBRA_IFC_QUEUED); | |
f7f740fe | 65 | |
d62a17ae | 66 | if (!CHECK_FLAG(ifc->conf, ZEBRA_IFC_CONFIGURED)) { |
67 | listnode_delete(ifc->ifp->connected, ifc); | |
68 | connected_free(ifc); | |
69 | } | |
ca16218d | 70 | } |
71 | ||
d62a17ae | 72 | static void connected_announce(struct interface *ifp, struct connected *ifc) |
ca16218d | 73 | { |
d62a17ae | 74 | if (!ifc) |
75 | return; | |
76 | ||
b0fa6f6a CS |
77 | if (!if_is_loopback(ifp) && ifc->address->family == AF_INET && |
78 | !IS_ZEBRA_IF_VRF(ifp)) { | |
d62a17ae | 79 | if (ifc->address->prefixlen == 32) |
80 | SET_FLAG(ifc->flags, ZEBRA_IFA_UNNUMBERED); | |
81 | else | |
82 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_UNNUMBERED); | |
83 | } | |
84 | ||
85 | listnode_add(ifp->connected, ifc); | |
86 | ||
87 | /* Update interface address information to protocol daemon. */ | |
88 | if (ifc->address->family == AF_INET) | |
89 | if_subnet_add(ifp, ifc); | |
90 | ||
91 | zebra_interface_address_add_update(ifp, ifc); | |
92 | ||
93 | if (if_is_operative(ifp)) { | |
ae87977c | 94 | connected_up(ifp, ifc); |
d62a17ae | 95 | } |
ca16218d | 96 | } |
6b0655a2 | 97 | |
718e3744 | 98 | /* If same interface address is already exist... */ |
abffde07 DL |
99 | struct connected *connected_check(struct interface *ifp, |
100 | union prefixconstptr pu) | |
718e3744 | 101 | { |
abffde07 | 102 | const struct prefix *p = pu.p; |
d62a17ae | 103 | struct connected *ifc; |
104 | struct listnode *node; | |
718e3744 | 105 | |
d62a17ae | 106 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) |
107 | if (prefix_same(ifc->address, p)) | |
108 | return ifc; | |
718e3744 | 109 | |
d62a17ae | 110 | return NULL; |
718e3744 | 111 | } |
112 | ||
abffde07 DL |
113 | /* same, but with peer address */ |
114 | struct connected *connected_check_ptp(struct interface *ifp, | |
115 | union prefixconstptr pu, | |
116 | union prefixconstptr du) | |
117 | { | |
118 | const struct prefix *p = pu.p; | |
119 | const struct prefix *d = du.p; | |
120 | struct connected *ifc; | |
121 | struct listnode *node; | |
122 | ||
abffde07 DL |
123 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { |
124 | if (!prefix_same(ifc->address, p)) | |
125 | continue; | |
126 | if (!CONNECTED_PEER(ifc) && !d) | |
127 | return ifc; | |
128 | if (CONNECTED_PEER(ifc) && d | |
129 | && prefix_same(ifc->destination, d)) | |
130 | return ifc; | |
131 | } | |
132 | ||
133 | return NULL; | |
134 | } | |
135 | ||
02b4805f | 136 | /* Check if two ifc's describe the same address in the same state */ |
d62a17ae | 137 | static int connected_same(struct connected *ifc1, struct connected *ifc2) |
74ecdc9e | 138 | { |
d62a17ae | 139 | if (ifc1->ifp != ifc2->ifp) |
140 | return 0; | |
141 | ||
0f3af738 JW |
142 | if (ifc1->flags != ifc2->flags) |
143 | return 0; | |
144 | ||
145 | if (ifc1->conf != ifc2->conf) | |
146 | return 0; | |
147 | ||
d62a17ae | 148 | if (ifc1->destination) |
149 | if (!ifc2->destination) | |
150 | return 0; | |
151 | if (ifc2->destination) | |
152 | if (!ifc1->destination) | |
153 | return 0; | |
154 | ||
155 | if (ifc1->destination && ifc2->destination) | |
156 | if (!prefix_same(ifc1->destination, ifc2->destination)) | |
157 | return 0; | |
158 | ||
d62a17ae | 159 | return 1; |
74ecdc9e PJ |
160 | } |
161 | ||
d7f5dad6 CF |
162 | /* Handle changes to addresses and send the neccesary announcements |
163 | * to clients. */ | |
d62a17ae | 164 | static void connected_update(struct interface *ifp, struct connected *ifc) |
74ecdc9e | 165 | { |
d62a17ae | 166 | struct connected *current; |
167 | ||
168 | /* Check same connected route. */ | |
abffde07 DL |
169 | current = connected_check_ptp(ifp, ifc->address, ifc->destination); |
170 | if (current) { | |
d62a17ae | 171 | if (CHECK_FLAG(current->conf, ZEBRA_IFC_CONFIGURED)) |
172 | SET_FLAG(ifc->conf, ZEBRA_IFC_CONFIGURED); | |
173 | ||
174 | /* Avoid spurious withdraws, this might be just the kernel | |
175 | * 'reflecting' | |
176 | * back an address we have already added. | |
177 | */ | |
178 | if (connected_same(current, ifc)) { | |
179 | /* nothing to do */ | |
180 | connected_free(ifc); | |
181 | return; | |
182 | } | |
183 | ||
184 | /* Clear the configured flag on the old ifc, so it will be freed | |
185 | * by | |
186 | * connected withdraw. */ | |
187 | UNSET_FLAG(current->conf, ZEBRA_IFC_CONFIGURED); | |
188 | connected_withdraw( | |
189 | current); /* implicit withdraw - freebsd does this */ | |
190 | } | |
191 | ||
192 | /* If the connected is new or has changed, announce it, if it is usable | |
193 | */ | |
194 | if (CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL)) | |
195 | connected_announce(ifp, ifc); | |
74ecdc9e PJ |
196 | } |
197 | ||
718e3744 | 198 | /* Called from if_up(). */ |
ae87977c | 199 | void connected_up(struct interface *ifp, struct connected *ifc) |
718e3744 | 200 | { |
ae87977c | 201 | afi_t afi; |
49085521 | 202 | struct prefix p = {0}; |
fd36be7e | 203 | struct nexthop nh = { |
4a7371e9 DS |
204 | .type = NEXTHOP_TYPE_IFINDEX, |
205 | .ifindex = ifp->ifindex, | |
a36898e7 | 206 | .vrf_id = ifp->vrf_id, |
fd36be7e | 207 | }; |
56e78254 | 208 | struct zebra_vrf *zvrf; |
cde1af84 | 209 | uint32_t metric; |
d62a17ae | 210 | |
a36898e7 | 211 | zvrf = zebra_vrf_lookup_by_id(ifp->vrf_id); |
56e78254 DS |
212 | if (!zvrf) { |
213 | flog_err(EC_ZEBRA_VRF_NOT_FOUND, | |
214 | "%s: Received Up for interface but no associated zvrf: %d", | |
a36898e7 | 215 | __PRETTY_FUNCTION__, ifp->vrf_id); |
56e78254 DS |
216 | return; |
217 | } | |
d62a17ae | 218 | if (!CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL)) |
219 | return; | |
220 | ||
ae87977c | 221 | PREFIX_COPY(&p, CONNECTED_PREFIX(ifc)); |
d62a17ae | 222 | |
223 | /* Apply mask to the network. */ | |
224 | apply_mask(&p); | |
225 | ||
ae87977c DS |
226 | afi = family2afi(p.family); |
227 | ||
228 | switch (afi) { | |
229 | case AFI_IP: | |
230 | /* | |
231 | * In case of connected address is 0.0.0.0/0 we treat it tunnel | |
232 | * address. | |
233 | */ | |
234 | if (prefix_ipv4_any((struct prefix_ipv4 *)&p)) | |
235 | return; | |
236 | break; | |
237 | case AFI_IP6: | |
70bc8385 | 238 | #ifndef GNU_LINUX |
ae87977c DS |
239 | /* XXX: It is already done by rib_bogus_ipv6 within rib_add */ |
240 | if (IN6_IS_ADDR_UNSPECIFIED(&p.u.prefix6)) | |
241 | return; | |
242 | #endif | |
243 | break; | |
244 | default: | |
e914ccbe | 245 | flog_warn(EC_ZEBRA_CONNECTED_AFI_UNKNOWN, |
9df414fe | 246 | "Received unknown AFI: %s", afi2str(afi)); |
d62a17ae | 247 | return; |
ae87977c DS |
248 | break; |
249 | } | |
d62a17ae | 250 | |
cde1af84 AK |
251 | metric = (ifc->metric < (uint32_t)METRIC_MAX) ? |
252 | ifc->metric : ifp->metric; | |
56e78254 | 253 | rib_add(afi, SAFI_UNICAST, zvrf->vrf->vrf_id, ZEBRA_ROUTE_CONNECT, |
8032b717 | 254 | 0, 0, &p, NULL, &nh, 0, zvrf->table_id, metric, 0, 0, 0); |
d62a17ae | 255 | |
56e78254 | 256 | rib_add(afi, SAFI_MULTICAST, zvrf->vrf->vrf_id, ZEBRA_ROUTE_CONNECT, |
8032b717 | 257 | 0, 0, &p, NULL, &nh, 0, zvrf->table_id, metric, 0, 0, 0); |
d62a17ae | 258 | |
d62a17ae | 259 | /* Schedule LSP forwarding entries for processing, if appropriate. */ |
56e78254 | 260 | if (zvrf->vrf->vrf_id == VRF_DEFAULT) { |
ae87977c DS |
261 | if (IS_ZEBRA_DEBUG_MPLS) { |
262 | char buf[PREFIX_STRLEN]; | |
263 | ||
996c9314 LB |
264 | zlog_debug( |
265 | "%u: IF %s IP %s address add/up, scheduling MPLS processing", | |
56e78254 | 266 | zvrf->vrf->vrf_id, ifp->name, |
996c9314 | 267 | prefix2str(&p, buf, sizeof(buf))); |
ae87977c | 268 | } |
56e78254 | 269 | mpls_mark_lsps_for_processing(zvrf, &p); |
d62a17ae | 270 | } |
718e3744 | 271 | } |
272 | ||
273 | /* Add connected IPv4 route to the interface. */ | |
d62a17ae | 274 | void connected_add_ipv4(struct interface *ifp, int flags, struct in_addr *addr, |
0f3af738 | 275 | uint16_t prefixlen, struct in_addr *dest, |
cde1af84 | 276 | const char *label, uint32_t metric) |
718e3744 | 277 | { |
d62a17ae | 278 | struct prefix_ipv4 *p; |
279 | struct connected *ifc; | |
280 | ||
281 | if (ipv4_martian(addr)) | |
282 | return; | |
283 | ||
284 | /* Make connected structure. */ | |
285 | ifc = connected_new(); | |
286 | ifc->ifp = ifp; | |
287 | ifc->flags = flags; | |
cde1af84 | 288 | ifc->metric = metric; |
d62a17ae | 289 | /* If we get a notification from the kernel, |
290 | * we can safely assume the address is known to the kernel */ | |
291 | SET_FLAG(ifc->conf, ZEBRA_IFC_QUEUED); | |
292 | ||
293 | /* Allocate new connected address. */ | |
294 | p = prefix_ipv4_new(); | |
295 | p->family = AF_INET; | |
296 | p->prefix = *addr; | |
abffde07 DL |
297 | p->prefixlen = CHECK_FLAG(flags, ZEBRA_IFA_PEER) ? IPV4_MAX_PREFIXLEN |
298 | : prefixlen; | |
d62a17ae | 299 | ifc->address = (struct prefix *)p; |
300 | ||
0f3af738 JW |
301 | /* If there is a peer address. */ |
302 | if (CONNECTED_PEER(ifc)) { | |
d62a17ae | 303 | /* validate the destination address */ |
0f3af738 JW |
304 | if (dest) { |
305 | p = prefix_ipv4_new(); | |
306 | p->family = AF_INET; | |
307 | p->prefix = *dest; | |
308 | p->prefixlen = prefixlen; | |
309 | ifc->destination = (struct prefix *)p; | |
310 | ||
311 | if (IPV4_ADDR_SAME(addr, dest)) | |
9df414fe | 312 | flog_warn( |
e914ccbe | 313 | EC_ZEBRA_IFACE_SAME_LOCAL_AS_PEER, |
d62a17ae | 314 | "warning: interface %s has same local and peer " |
315 | "address %s, routing protocols may malfunction", | |
316 | ifp->name, inet_ntoa(*addr)); | |
317 | } else { | |
9df414fe | 318 | zlog_debug( |
d62a17ae | 319 | "warning: %s called for interface %s " |
320 | "with peer flag set, but no peer address supplied", | |
321 | __func__, ifp->name); | |
322 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER); | |
323 | } | |
e4529636 AS |
324 | } |
325 | ||
0f3af738 JW |
326 | /* no destination address was supplied */ |
327 | if (!dest && (prefixlen == IPV4_MAX_PREFIXLEN) | |
328 | && if_is_pointopoint(ifp)) | |
329 | zlog_debug( | |
330 | "warning: PtP interface %s with addr %s/%d needs a " | |
331 | "peer address", | |
332 | ifp->name, inet_ntoa(*addr), prefixlen); | |
333 | ||
d62a17ae | 334 | /* Label of this address. */ |
335 | if (label) | |
336 | ifc->label = XSTRDUP(MTYPE_CONNECTED_LABEL, label); | |
718e3744 | 337 | |
d62a17ae | 338 | /* For all that I know an IPv4 address is always ready when we receive |
339 | * the notification. So it should be safe to set the REAL flag here. */ | |
340 | SET_FLAG(ifc->conf, ZEBRA_IFC_REAL); | |
718e3744 | 341 | |
d62a17ae | 342 | connected_update(ifp, ifc); |
718e3744 | 343 | } |
344 | ||
11461c63 | 345 | void connected_down(struct interface *ifp, struct connected *ifc) |
718e3744 | 346 | { |
11461c63 | 347 | afi_t afi; |
d62a17ae | 348 | struct prefix p; |
fd36be7e | 349 | struct nexthop nh = { |
4a7371e9 DS |
350 | .type = NEXTHOP_TYPE_IFINDEX, |
351 | .ifindex = ifp->ifindex, | |
a36898e7 | 352 | .vrf_id = ifp->vrf_id, |
fd36be7e | 353 | }; |
56e78254 DS |
354 | struct zebra_vrf *zvrf; |
355 | ||
a36898e7 | 356 | zvrf = zebra_vrf_lookup_by_id(ifp->vrf_id); |
56e78254 DS |
357 | if (!zvrf) { |
358 | flog_err(EC_ZEBRA_VRF_NOT_FOUND, | |
359 | "%s: Received Up for interface but no associated zvrf: %d", | |
a36898e7 | 360 | __PRETTY_FUNCTION__, ifp->vrf_id); |
56e78254 DS |
361 | return; |
362 | } | |
718e3744 | 363 | |
d62a17ae | 364 | if (!CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL)) |
365 | return; | |
718e3744 | 366 | |
11461c63 | 367 | PREFIX_COPY(&p, CONNECTED_PREFIX(ifc)); |
718e3744 | 368 | |
d62a17ae | 369 | /* Apply mask to the network. */ |
370 | apply_mask(&p); | |
718e3744 | 371 | |
11461c63 DS |
372 | afi = family2afi(p.family); |
373 | ||
374 | switch (afi) { | |
375 | case AFI_IP: | |
376 | /* | |
377 | * In case of connected address is 0.0.0.0/0 we treat it tunnel | |
378 | * address. | |
379 | */ | |
380 | if (prefix_ipv4_any((struct prefix_ipv4 *)&p)) | |
381 | return; | |
382 | break; | |
383 | case AFI_IP6: | |
384 | if (IN6_IS_ADDR_UNSPECIFIED(&p.u.prefix6)) | |
385 | return; | |
386 | break; | |
387 | default: | |
14a4d9d0 | 388 | zlog_warn("Unknown AFI: %s", afi2str(afi)); |
11461c63 DS |
389 | break; |
390 | } | |
718e3744 | 391 | |
11461c63 DS |
392 | /* |
393 | * Same logic as for connected_up(): push the changes into the | |
394 | * head. | |
395 | */ | |
bc541126 SW |
396 | rib_delete(afi, SAFI_UNICAST, zvrf->vrf->vrf_id, ZEBRA_ROUTE_CONNECT, 0, |
397 | 0, &p, NULL, &nh, 0, zvrf->table_id, 0, 0, false); | |
718e3744 | 398 | |
56e78254 | 399 | rib_delete(afi, SAFI_MULTICAST, zvrf->vrf->vrf_id, ZEBRA_ROUTE_CONNECT, |
bc541126 | 400 | 0, 0, &p, NULL, &nh, 0, zvrf->table_id, 0, 0, false); |
42cb6b66 | 401 | |
d62a17ae | 402 | /* Schedule LSP forwarding entries for processing, if appropriate. */ |
56e78254 | 403 | if (zvrf->vrf->vrf_id == VRF_DEFAULT) { |
11461c63 DS |
404 | if (IS_ZEBRA_DEBUG_MPLS) { |
405 | char buf[PREFIX_STRLEN]; | |
406 | ||
996c9314 LB |
407 | zlog_debug( |
408 | "%u: IF %s IP %s address down, scheduling MPLS processing", | |
56e78254 | 409 | zvrf->vrf->vrf_id, ifp->name, |
996c9314 | 410 | prefix2str(&p, buf, sizeof(buf))); |
11461c63 | 411 | } |
56e78254 | 412 | mpls_mark_lsps_for_processing(zvrf, &p); |
d62a17ae | 413 | } |
718e3744 | 414 | } |
415 | ||
dc7cd304 DS |
416 | static void connected_delete_helper(struct connected *ifc, struct prefix *p) |
417 | { | |
418 | struct interface *ifp; | |
419 | ||
420 | if (!ifc) | |
421 | return; | |
422 | ifp = ifc->ifp; | |
423 | ||
424 | connected_withdraw(ifc); | |
425 | ||
dc7cd304 | 426 | /* Schedule LSP forwarding entries for processing, if appropriate. */ |
a36898e7 | 427 | if (ifp->vrf_id == VRF_DEFAULT) { |
dc7cd304 DS |
428 | if (IS_ZEBRA_DEBUG_MPLS) { |
429 | char buf[PREFIX_STRLEN]; | |
430 | ||
996c9314 LB |
431 | zlog_debug( |
432 | "%u: IF %s IP %s address delete, scheduling MPLS processing", | |
a36898e7 | 433 | ifp->vrf_id, ifp->name, |
996c9314 | 434 | prefix2str(p, buf, sizeof(buf))); |
dc7cd304 | 435 | } |
a36898e7 | 436 | mpls_mark_lsps_for_processing(vrf_info_lookup(ifp->vrf_id), p); |
dc7cd304 DS |
437 | } |
438 | } | |
439 | ||
718e3744 | 440 | /* Delete connected IPv4 route to the interface. */ |
d62a17ae | 441 | void connected_delete_ipv4(struct interface *ifp, int flags, |
f93eee44 | 442 | struct in_addr *addr, uint16_t prefixlen, |
0f3af738 | 443 | struct in_addr *dest) |
718e3744 | 444 | { |
dc7cd304 | 445 | struct prefix p, d; |
d62a17ae | 446 | struct connected *ifc; |
447 | ||
dc7cd304 | 448 | memset(&p, 0, sizeof(struct prefix)); |
d62a17ae | 449 | p.family = AF_INET; |
dc7cd304 | 450 | p.u.prefix4 = *addr; |
abffde07 DL |
451 | p.prefixlen = CHECK_FLAG(flags, ZEBRA_IFA_PEER) ? IPV4_MAX_PREFIXLEN |
452 | : prefixlen; | |
453 | ||
0f3af738 | 454 | if (dest) { |
dc7cd304 | 455 | memset(&d, 0, sizeof(struct prefix)); |
abffde07 | 456 | d.family = AF_INET; |
0f3af738 | 457 | d.u.prefix4 = *dest; |
abffde07 | 458 | d.prefixlen = prefixlen; |
dc7cd304 | 459 | ifc = connected_check_ptp(ifp, &p, &d); |
abffde07 | 460 | } else |
dc7cd304 | 461 | ifc = connected_check_ptp(ifp, &p, NULL); |
d62a17ae | 462 | |
dc7cd304 | 463 | connected_delete_helper(ifc, &p); |
718e3744 | 464 | } |
465 | ||
718e3744 | 466 | /* Add connected IPv6 route to the interface. */ |
d62a17ae | 467 | void connected_add_ipv6(struct interface *ifp, int flags, struct in6_addr *addr, |
0f3af738 | 468 | struct in6_addr *dest, uint16_t prefixlen, |
cde1af84 | 469 | const char *label, uint32_t metric) |
718e3744 | 470 | { |
d62a17ae | 471 | struct prefix_ipv6 *p; |
472 | struct connected *ifc; | |
473 | ||
474 | if (ipv6_martian(addr)) | |
475 | return; | |
476 | ||
477 | /* Make connected structure. */ | |
478 | ifc = connected_new(); | |
479 | ifc->ifp = ifp; | |
480 | ifc->flags = flags; | |
cde1af84 | 481 | ifc->metric = metric; |
d62a17ae | 482 | /* If we get a notification from the kernel, |
483 | * we can safely assume the address is known to the kernel */ | |
484 | SET_FLAG(ifc->conf, ZEBRA_IFC_QUEUED); | |
485 | ||
486 | /* Allocate new connected address. */ | |
487 | p = prefix_ipv6_new(); | |
488 | p->family = AF_INET6; | |
489 | IPV6_ADDR_COPY(&p->prefix, addr); | |
490 | p->prefixlen = prefixlen; | |
491 | ifc->address = (struct prefix *)p; | |
492 | ||
0f3af738 | 493 | if (dest) { |
60c0687a DS |
494 | p = prefix_ipv6_new(); |
495 | p->family = AF_INET6; | |
0f3af738 | 496 | IPV6_ADDR_COPY(&p->prefix, dest); |
60c0687a DS |
497 | p->prefixlen = prefixlen; |
498 | ifc->destination = (struct prefix *)p; | |
f52d0a1a DS |
499 | } else { |
500 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_PEER)) { | |
9df414fe QY |
501 | zlog_debug( |
502 | "warning: %s called for interface %s with peer flag set, but no peer address supplied", | |
503 | __func__, ifp->name); | |
f52d0a1a DS |
504 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER); |
505 | } | |
60c0687a DS |
506 | } |
507 | ||
d62a17ae | 508 | /* Label of this address. */ |
509 | if (label) | |
510 | ifc->label = XSTRDUP(MTYPE_CONNECTED_LABEL, label); | |
511 | ||
512 | /* On Linux, we only get here when DAD is complete, therefore we can set | |
513 | * ZEBRA_IFC_REAL. | |
514 | * | |
515 | * On BSD, there currently doesn't seem to be a way to check for | |
516 | * completion of | |
517 | * DAD, so we replicate the old behaviour and set ZEBRA_IFC_REAL, | |
518 | * although DAD | |
519 | * might still be running. | |
520 | */ | |
521 | SET_FLAG(ifc->conf, ZEBRA_IFC_REAL); | |
522 | connected_update(ifp, ifc); | |
718e3744 | 523 | } |
524 | ||
d62a17ae | 525 | void connected_delete_ipv6(struct interface *ifp, struct in6_addr *address, |
0f3af738 | 526 | struct in6_addr *dest, uint16_t prefixlen) |
718e3744 | 527 | { |
60c0687a | 528 | struct prefix p, d; |
d62a17ae | 529 | struct connected *ifc; |
530 | ||
dc7cd304 | 531 | memset(&p, 0, sizeof(struct prefix)); |
d62a17ae | 532 | p.family = AF_INET6; |
dc7cd304 | 533 | memcpy(&p.u.prefix6, address, sizeof(struct in6_addr)); |
d62a17ae | 534 | p.prefixlen = prefixlen; |
535 | ||
0f3af738 | 536 | if (dest) { |
60c0687a DS |
537 | memset(&d, 0, sizeof(struct prefix)); |
538 | d.family = AF_INET6; | |
0f3af738 | 539 | IPV6_ADDR_COPY(&d.u.prefix6, dest); |
60c0687a DS |
540 | d.prefixlen = prefixlen; |
541 | ifc = connected_check_ptp(ifp, &p, &d); | |
542 | } else | |
543 | ifc = connected_check_ptp(ifp, &p, NULL); | |
d62a17ae | 544 | |
dc7cd304 | 545 | connected_delete_helper(ifc, &p); |
718e3744 | 546 | } |
d44ca835 | 547 | |
d62a17ae | 548 | int connected_is_unnumbered(struct interface *ifp) |
d44ca835 | 549 | { |
d62a17ae | 550 | struct connected *connected; |
551 | struct listnode *node; | |
552 | ||
553 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { | |
554 | if (CHECK_FLAG(connected->conf, ZEBRA_IFC_REAL) | |
555 | && connected->address->family == AF_INET) | |
556 | return CHECK_FLAG(connected->flags, | |
557 | ZEBRA_IFA_UNNUMBERED); | |
558 | } | |
e93a6fbb | 559 | return 1; |
d44ca835 | 560 | } |