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Commit | Line | Data |
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718e3744 | 1 | /* |
2 | * Interface related function for RIPng. | |
3 | * Copyright (C) 1998 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 "linklist.h" | |
25 | #include "if.h" | |
26 | #include "prefix.h" | |
27 | #include "memory.h" | |
28 | #include "network.h" | |
29 | #include "filter.h" | |
30 | #include "log.h" | |
31 | #include "stream.h" | |
32 | #include "zclient.h" | |
33 | #include "command.h" | |
fe08ba7e | 34 | #include "agg_table.h" |
718e3744 | 35 | #include "thread.h" |
4d4653af | 36 | #include "privs.h" |
6a69b354 | 37 | #include "vrf.h" |
7f9a4fd7 | 38 | #include "lib_errors.h" |
d406db4c | 39 | #include "northbound_cli.h" |
718e3744 | 40 | |
41 | #include "ripngd/ripngd.h" | |
42 | #include "ripngd/ripng_debug.h" | |
6b0655a2 | 43 | |
718e3744 | 44 | /* If RFC2133 definition is used. */ |
45 | #ifndef IPV6_JOIN_GROUP | |
c258527b | 46 | #define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP |
718e3744 | 47 | #endif |
48 | #ifndef IPV6_LEAVE_GROUP | |
c258527b | 49 | #define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP |
718e3744 | 50 | #endif |
51 | ||
eaf58ba9 DL |
52 | DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_IF, "ripng interface") |
53 | ||
718e3744 | 54 | /* Static utility function. */ |
d62a17ae | 55 | static void ripng_enable_apply(struct interface *); |
56 | static void ripng_passive_interface_apply(struct interface *); | |
5c84b9a5 | 57 | static int ripng_enable_if_lookup(struct ripng *ripng, const char *ifname); |
d62a17ae | 58 | static int ripng_enable_network_lookup2(struct connected *); |
5c84b9a5 | 59 | static void ripng_enable_apply_all(struct ripng *ripng); |
718e3744 | 60 | |
61 | /* Join to the all rip routers multicast group. */ | |
5c84b9a5 | 62 | static int ripng_multicast_join(struct interface *ifp, int sock) |
718e3744 | 63 | { |
d62a17ae | 64 | int ret; |
65 | struct ipv6_mreq mreq; | |
66 | int save_errno; | |
67 | ||
68 | if (if_is_multicast(ifp)) { | |
69 | memset(&mreq, 0, sizeof(mreq)); | |
70 | inet_pton(AF_INET6, RIPNG_GROUP, &mreq.ipv6mr_multiaddr); | |
71 | mreq.ipv6mr_interface = ifp->ifindex; | |
72 | ||
73 | /* | |
74 | * NetBSD 1.6.2 requires root to join groups on gif(4). | |
75 | * While this is bogus, privs are available and easy to use | |
76 | * for this call as a workaround. | |
77 | */ | |
0cf6db21 | 78 | frr_with_privs(&ripngd_privs) { |
d62a17ae | 79 | |
5c84b9a5 | 80 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP, |
01b9e3fd DL |
81 | (char *)&mreq, sizeof(mreq)); |
82 | save_errno = errno; | |
d62a17ae | 83 | |
01b9e3fd | 84 | } |
d62a17ae | 85 | |
86 | if (ret < 0 && save_errno == EADDRINUSE) { | |
87 | /* | |
88 | * Group is already joined. This occurs due to sloppy | |
89 | * group | |
90 | * management, in particular declining to leave the | |
91 | * group on | |
92 | * an interface that has just gone down. | |
93 | */ | |
9165c5f5 | 94 | zlog_warn("ripng join on %s EADDRINUSE (ignoring)", |
d62a17ae | 95 | ifp->name); |
96 | return 0; /* not an error */ | |
97 | } | |
98 | ||
99 | if (ret < 0) | |
100 | zlog_warn("can't setsockopt IPV6_JOIN_GROUP: %s", | |
101 | safe_strerror(save_errno)); | |
102 | ||
103 | if (IS_RIPNG_DEBUG_EVENT) | |
104 | zlog_debug( | |
105 | "RIPng %s join to all-rip-routers multicast group", | |
106 | ifp->name); | |
107 | ||
108 | if (ret < 0) | |
109 | return -1; | |
110 | } | |
111 | return 0; | |
718e3744 | 112 | } |
113 | ||
114 | /* Leave from the all rip routers multicast group. */ | |
5c84b9a5 | 115 | static int ripng_multicast_leave(struct interface *ifp, int sock) |
718e3744 | 116 | { |
d62a17ae | 117 | int ret; |
118 | struct ipv6_mreq mreq; | |
119 | ||
120 | if (if_is_multicast(ifp)) { | |
121 | memset(&mreq, 0, sizeof(mreq)); | |
122 | inet_pton(AF_INET6, RIPNG_GROUP, &mreq.ipv6mr_multiaddr); | |
123 | mreq.ipv6mr_interface = ifp->ifindex; | |
124 | ||
5c84b9a5 | 125 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_LEAVE_GROUP, |
d62a17ae | 126 | (char *)&mreq, sizeof(mreq)); |
127 | if (ret < 0) | |
9165c5f5 | 128 | zlog_warn("can't setsockopt IPV6_LEAVE_GROUP: %s", |
d62a17ae | 129 | safe_strerror(errno)); |
130 | ||
131 | if (IS_RIPNG_DEBUG_EVENT) | |
132 | zlog_debug( | |
133 | "RIPng %s leave from all-rip-routers multicast group", | |
134 | ifp->name); | |
135 | ||
136 | if (ret < 0) | |
137 | return -1; | |
138 | } | |
a94434b6 | 139 | |
d62a17ae | 140 | return 0; |
a94434b6 | 141 | } |
142 | ||
143 | /* How many link local IPv6 address could be used on the interface ? */ | |
d62a17ae | 144 | static int ripng_if_ipv6_lladdress_check(struct interface *ifp) |
a94434b6 | 145 | { |
d62a17ae | 146 | struct listnode *nn; |
147 | struct connected *connected; | |
148 | int count = 0; | |
a94434b6 | 149 | |
d62a17ae | 150 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, nn, connected)) { |
151 | struct prefix *p; | |
152 | p = connected->address; | |
718e3744 | 153 | |
d62a17ae | 154 | if ((p->family == AF_INET6) |
155 | && IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6)) | |
156 | count++; | |
157 | } | |
718e3744 | 158 | |
d62a17ae | 159 | return count; |
718e3744 | 160 | } |
161 | ||
d62a17ae | 162 | static int ripng_if_down(struct interface *ifp) |
718e3744 | 163 | { |
fe08ba7e | 164 | struct agg_node *rp; |
d62a17ae | 165 | struct ripng_info *rinfo; |
166 | struct ripng_interface *ri; | |
5c84b9a5 | 167 | struct ripng *ripng; |
d62a17ae | 168 | struct list *list = NULL; |
169 | struct listnode *listnode = NULL, *nextnode = NULL; | |
170 | ||
5c84b9a5 RW |
171 | ri = ifp->info; |
172 | ripng = ri->ripng; | |
173 | ||
d62a17ae | 174 | if (ripng) |
fe08ba7e DS |
175 | for (rp = agg_route_top(ripng->table); rp; |
176 | rp = agg_route_next(rp)) | |
d62a17ae | 177 | if ((list = rp->info) != NULL) |
178 | for (ALL_LIST_ELEMENTS(list, listnode, nextnode, | |
179 | rinfo)) | |
180 | if (rinfo->ifindex == ifp->ifindex) | |
5c84b9a5 | 181 | ripng_ecmp_delete(ripng, rinfo); |
d62a17ae | 182 | |
d62a17ae | 183 | |
184 | if (ri->running) { | |
185 | if (IS_RIPNG_DEBUG_EVENT) | |
186 | zlog_debug("turn off %s", ifp->name); | |
187 | ||
188 | /* Leave from multicast group. */ | |
fa3bf3a2 MS |
189 | if (ripng) |
190 | ripng_multicast_leave(ifp, ripng->sock); | |
d62a17ae | 191 | |
192 | ri->running = 0; | |
193 | } | |
194 | ||
195 | return 0; | |
718e3744 | 196 | } |
197 | ||
198 | /* Inteface link up message processing. */ | |
ddbf3e60 | 199 | static int ripng_ifp_up(struct interface *ifp) |
718e3744 | 200 | { |
24c4ee4a DS |
201 | if (IS_RIPNG_DEBUG_ZEBRA) { |
202 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); | |
203 | ||
d62a17ae | 204 | zlog_debug( |
24c4ee4a DS |
205 | "interface up %s vrf %s(%u) index %d flags %llx metric %d mtu %d", |
206 | ifp->name, VRF_LOGNAME(vrf), ifp->vrf_id, ifp->ifindex, | |
dde7b15b | 207 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
24c4ee4a | 208 | } |
dde7b15b RW |
209 | |
210 | ripng_interface_sync(ifp); | |
718e3744 | 211 | |
d62a17ae | 212 | /* Check if this interface is RIPng enabled or not. */ |
213 | ripng_enable_apply(ifp); | |
718e3744 | 214 | |
d62a17ae | 215 | /* Check for a passive interface. */ |
216 | ripng_passive_interface_apply(ifp); | |
718e3744 | 217 | |
d62a17ae | 218 | /* Apply distribute list to the all interface. */ |
219 | ripng_distribute_update_interface(ifp); | |
718e3744 | 220 | |
d62a17ae | 221 | return 0; |
718e3744 | 222 | } |
223 | ||
224 | /* Inteface link down message processing. */ | |
b0b69e59 | 225 | static int ripng_ifp_down(struct interface *ifp) |
718e3744 | 226 | { |
dde7b15b | 227 | ripng_interface_sync(ifp); |
d62a17ae | 228 | ripng_if_down(ifp); |
718e3744 | 229 | |
24c4ee4a DS |
230 | if (IS_RIPNG_DEBUG_ZEBRA) { |
231 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); | |
232 | ||
d62a17ae | 233 | zlog_debug( |
24c4ee4a DS |
234 | "interface down %s vrf %s(%u) index %d flags %#llx metric %d mtu %d", |
235 | ifp->name, VRF_LOGNAME(vrf), ifp->vrf_id, ifp->ifindex, | |
dde7b15b | 236 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
24c4ee4a | 237 | } |
718e3744 | 238 | |
d62a17ae | 239 | return 0; |
718e3744 | 240 | } |
241 | ||
242 | /* Inteface addition message from zebra. */ | |
ef7bd2a3 | 243 | static int ripng_ifp_create(struct interface *ifp) |
718e3744 | 244 | { |
dde7b15b | 245 | ripng_interface_sync(ifp); |
718e3744 | 246 | |
24c4ee4a DS |
247 | if (IS_RIPNG_DEBUG_ZEBRA) { |
248 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); | |
249 | ||
d62a17ae | 250 | zlog_debug( |
24c4ee4a DS |
251 | "RIPng interface add %s vrf %s(%u) index %d flags %#llx metric %d mtu %d", |
252 | ifp->name, VRF_LOGNAME(vrf), ifp->vrf_id, ifp->ifindex, | |
dde7b15b | 253 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
24c4ee4a | 254 | } |
718e3744 | 255 | |
d62a17ae | 256 | /* Check is this interface is RIP enabled or not.*/ |
257 | ripng_enable_apply(ifp); | |
718e3744 | 258 | |
d62a17ae | 259 | /* Apply distribute list to the interface. */ |
260 | ripng_distribute_update_interface(ifp); | |
718e3744 | 261 | |
d62a17ae | 262 | /* Check interface routemap. */ |
263 | ripng_if_rmap_update_interface(ifp); | |
718e3744 | 264 | |
d62a17ae | 265 | return 0; |
718e3744 | 266 | } |
267 | ||
3c3c3252 | 268 | static int ripng_ifp_destroy(struct interface *ifp) |
718e3744 | 269 | { |
24c4ee4a DS |
270 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); |
271 | ||
dde7b15b | 272 | ripng_interface_sync(ifp); |
d62a17ae | 273 | if (if_is_up(ifp)) { |
274 | ripng_if_down(ifp); | |
275 | } | |
a94434b6 | 276 | |
13c5f95e DS |
277 | if (IS_RIPNG_DEBUG_ZEBRA) |
278 | zlog_debug( | |
279 | "interface delete %s vrf %s(%u) index %d flags %#llx metric %d mtu %d", | |
280 | ifp->name, VRF_LOGNAME(vrf), ifp->vrf_id, ifp->ifindex, | |
281 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); | |
a94434b6 | 282 | |
d62a17ae | 283 | return 0; |
718e3744 | 284 | } |
285 | ||
dde7b15b | 286 | /* VRF update for an interface. */ |
121f9dee | 287 | int ripng_interface_vrf_update(ZAPI_CALLBACK_ARGS) |
dde7b15b RW |
288 | { |
289 | struct interface *ifp; | |
290 | vrf_id_t new_vrf_id; | |
291 | ||
292 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
293 | &new_vrf_id); | |
294 | if (!ifp) | |
295 | return 0; | |
296 | ||
24c4ee4a DS |
297 | if (IS_RIPNG_DEBUG_ZEBRA) { |
298 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); | |
299 | struct vrf *nvrf = vrf_lookup_by_id(new_vrf_id); | |
300 | ||
301 | zlog_debug("interface %s VRF change vrf %s(%u) new vrf %s(%u)", | |
302 | ifp->name, VRF_LOGNAME(vrf), vrf_id, | |
303 | VRF_LOGNAME(nvrf), new_vrf_id); | |
304 | } | |
dde7b15b | 305 | |
a36898e7 | 306 | if_update_to_new_vrf(ifp, new_vrf_id); |
dde7b15b RW |
307 | ripng_interface_sync(ifp); |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
5c84b9a5 | 312 | void ripng_interface_clean(struct ripng *ripng) |
a94434b6 | 313 | { |
d62a17ae | 314 | struct interface *ifp; |
315 | struct ripng_interface *ri; | |
a94434b6 | 316 | |
dde7b15b | 317 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 318 | ri = ifp->info; |
a94434b6 | 319 | |
d62a17ae | 320 | ri->enable_network = 0; |
321 | ri->enable_interface = 0; | |
322 | ri->running = 0; | |
a94434b6 | 323 | |
d62a17ae | 324 | if (ri->t_wakeup) { |
325 | thread_cancel(ri->t_wakeup); | |
326 | ri->t_wakeup = NULL; | |
327 | } | |
328 | } | |
329 | } | |
a94434b6 | 330 | |
d62a17ae | 331 | static void ripng_apply_address_add(struct connected *ifc) |
332 | { | |
5c84b9a5 RW |
333 | struct ripng_interface *ri = ifc->ifp->info; |
334 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 335 | struct prefix_ipv6 address; |
336 | struct prefix *p; | |
337 | ||
338 | if (!ripng) | |
339 | return; | |
340 | ||
341 | if (!if_is_up(ifc->ifp)) | |
342 | return; | |
343 | ||
344 | p = ifc->address; | |
345 | ||
346 | memset(&address, 0, sizeof(address)); | |
347 | address.family = p->family; | |
348 | address.prefix = p->u.prefix6; | |
349 | address.prefixlen = p->prefixlen; | |
350 | apply_mask_ipv6(&address); | |
351 | ||
352 | /* Check if this interface is RIP enabled or not | |
353 | or Check if this address's prefix is RIP enabled */ | |
5c84b9a5 | 354 | if ((ripng_enable_if_lookup(ripng, ifc->ifp->name) >= 0) |
d62a17ae | 355 | || (ripng_enable_network_lookup2(ifc) >= 0)) |
5c84b9a5 | 356 | ripng_redistribute_add(ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 357 | RIPNG_ROUTE_INTERFACE, &address, |
358 | ifc->ifp->ifindex, NULL, 0); | |
a94434b6 | 359 | } |
360 | ||
121f9dee | 361 | int ripng_interface_address_add(ZAPI_CALLBACK_ARGS) |
718e3744 | 362 | { |
d62a17ae | 363 | struct connected *c; |
364 | struct prefix *p; | |
718e3744 | 365 | |
d62a17ae | 366 | c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, |
367 | zclient->ibuf, vrf_id); | |
718e3744 | 368 | |
d62a17ae | 369 | if (c == NULL) |
370 | return 0; | |
718e3744 | 371 | |
d62a17ae | 372 | p = c->address; |
718e3744 | 373 | |
d62a17ae | 374 | if (p->family == AF_INET6) { |
375 | struct ripng_interface *ri = c->ifp->info; | |
a94434b6 | 376 | |
d62a17ae | 377 | if (IS_RIPNG_DEBUG_ZEBRA) |
378 | zlog_debug("RIPng connected address %s/%d add", | |
379 | inet6_ntoa(p->u.prefix6), p->prefixlen); | |
a94434b6 | 380 | |
d62a17ae | 381 | /* Check is this prefix needs to be redistributed. */ |
382 | ripng_apply_address_add(c); | |
a94434b6 | 383 | |
d62a17ae | 384 | /* Let's try once again whether the interface could be activated |
385 | */ | |
386 | if (!ri->running) { | |
387 | /* Check if this interface is RIP enabled or not.*/ | |
388 | ripng_enable_apply(c->ifp); | |
a94434b6 | 389 | |
d62a17ae | 390 | /* Apply distribute list to the interface. */ |
391 | ripng_distribute_update_interface(c->ifp); | |
718e3744 | 392 | |
d62a17ae | 393 | /* Check interface routemap. */ |
394 | ripng_if_rmap_update_interface(c->ifp); | |
395 | } | |
396 | } | |
397 | ||
398 | return 0; | |
718e3744 | 399 | } |
400 | ||
d62a17ae | 401 | static void ripng_apply_address_del(struct connected *ifc) |
402 | { | |
5c84b9a5 RW |
403 | struct ripng_interface *ri = ifc->ifp->info; |
404 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 405 | struct prefix_ipv6 address; |
406 | struct prefix *p; | |
a94434b6 | 407 | |
d62a17ae | 408 | if (!ripng) |
409 | return; | |
a94434b6 | 410 | |
d62a17ae | 411 | if (!if_is_up(ifc->ifp)) |
412 | return; | |
a94434b6 | 413 | |
d62a17ae | 414 | p = ifc->address; |
a94434b6 | 415 | |
d62a17ae | 416 | memset(&address, 0, sizeof(address)); |
417 | address.family = p->family; | |
418 | address.prefix = p->u.prefix6; | |
419 | address.prefixlen = p->prefixlen; | |
420 | apply_mask_ipv6(&address); | |
a94434b6 | 421 | |
5c84b9a5 RW |
422 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
423 | RIPNG_ROUTE_INTERFACE, &address, | |
424 | ifc->ifp->ifindex); | |
a94434b6 | 425 | } |
426 | ||
121f9dee | 427 | int ripng_interface_address_delete(ZAPI_CALLBACK_ARGS) |
718e3744 | 428 | { |
d62a17ae | 429 | struct connected *ifc; |
430 | struct prefix *p; | |
431 | char buf[INET6_ADDRSTRLEN]; | |
432 | ||
433 | ifc = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, | |
434 | zclient->ibuf, vrf_id); | |
435 | ||
436 | if (ifc) { | |
437 | p = ifc->address; | |
438 | ||
439 | if (p->family == AF_INET6) { | |
440 | if (IS_RIPNG_DEBUG_ZEBRA) | |
441 | zlog_debug( | |
442 | "RIPng connected address %s/%d delete", | |
443 | inet_ntop(AF_INET6, &p->u.prefix6, buf, | |
444 | INET6_ADDRSTRLEN), | |
445 | p->prefixlen); | |
446 | ||
447 | /* Check wether this prefix needs to be removed. */ | |
448 | ripng_apply_address_del(ifc); | |
449 | } | |
721c0857 | 450 | connected_free(&ifc); |
718e3744 | 451 | } |
718e3744 | 452 | |
d62a17ae | 453 | return 0; |
718e3744 | 454 | } |
6b0655a2 | 455 | |
718e3744 | 456 | /* Lookup RIPng enable network. */ |
a94434b6 | 457 | /* Check wether the interface has at least a connected prefix that |
29b94d58 | 458 | * is within the ripng->enable_network table. */ |
d62a17ae | 459 | static int ripng_enable_network_lookup_if(struct interface *ifp) |
718e3744 | 460 | { |
5c84b9a5 RW |
461 | struct ripng_interface *ri = ifp->info; |
462 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 463 | struct listnode *node; |
464 | struct connected *connected; | |
465 | struct prefix_ipv6 address; | |
466 | ||
29b94d58 RW |
467 | if (!ripng) |
468 | return -1; | |
469 | ||
d62a17ae | 470 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { |
471 | struct prefix *p; | |
fe08ba7e | 472 | struct agg_node *n; |
d62a17ae | 473 | |
474 | p = connected->address; | |
475 | ||
476 | if (p->family == AF_INET6) { | |
477 | address.family = AF_INET6; | |
478 | address.prefix = p->u.prefix6; | |
479 | address.prefixlen = IPV6_MAX_BITLEN; | |
480 | ||
29b94d58 | 481 | n = agg_node_match(ripng->enable_network, |
fe08ba7e | 482 | (struct prefix *)&address); |
ee6f7757 | 483 | if (n) { |
fe08ba7e | 484 | agg_unlock_node(n); |
d62a17ae | 485 | return 1; |
486 | } | |
487 | } | |
488 | } | |
489 | return -1; | |
718e3744 | 490 | } |
491 | ||
29b94d58 | 492 | /* Check wether connected is within the ripng->enable_network table. */ |
d62a17ae | 493 | static int ripng_enable_network_lookup2(struct connected *connected) |
a94434b6 | 494 | { |
5c84b9a5 RW |
495 | struct ripng_interface *ri = connected->ifp->info; |
496 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 497 | struct prefix_ipv6 address; |
498 | struct prefix *p; | |
a94434b6 | 499 | |
29b94d58 RW |
500 | if (!ripng) |
501 | return -1; | |
502 | ||
d62a17ae | 503 | p = connected->address; |
a94434b6 | 504 | |
d62a17ae | 505 | if (p->family == AF_INET6) { |
fe08ba7e | 506 | struct agg_node *node; |
a94434b6 | 507 | |
d62a17ae | 508 | address.family = p->family; |
509 | address.prefix = p->u.prefix6; | |
510 | address.prefixlen = IPV6_MAX_BITLEN; | |
a94434b6 | 511 | |
d62a17ae | 512 | /* LPM on p->family, p->u.prefix6/IPV6_MAX_BITLEN within |
29b94d58 RW |
513 | * ripng->enable_network */ |
514 | node = agg_node_match(ripng->enable_network, | |
fe08ba7e | 515 | (struct prefix *)&address); |
a94434b6 | 516 | |
d62a17ae | 517 | if (node) { |
fe08ba7e | 518 | agg_unlock_node(node); |
d62a17ae | 519 | return 1; |
520 | } | |
521 | } | |
a94434b6 | 522 | |
d62a17ae | 523 | return -1; |
a94434b6 | 524 | } |
525 | ||
718e3744 | 526 | /* Add RIPng enable network. */ |
5c84b9a5 | 527 | int ripng_enable_network_add(struct ripng *ripng, struct prefix *p) |
718e3744 | 528 | { |
fe08ba7e | 529 | struct agg_node *node; |
718e3744 | 530 | |
29b94d58 | 531 | node = agg_node_get(ripng->enable_network, p); |
718e3744 | 532 | |
d62a17ae | 533 | if (node->info) { |
fe08ba7e | 534 | agg_unlock_node(node); |
cc48702b | 535 | return NB_ERR_INCONSISTENCY; |
d62a17ae | 536 | } else |
537 | node->info = (void *)1; | |
718e3744 | 538 | |
d62a17ae | 539 | /* XXX: One should find a better solution than a generic one */ |
5c84b9a5 | 540 | ripng_enable_apply_all(ripng); |
a94434b6 | 541 | |
cc48702b | 542 | return NB_OK; |
718e3744 | 543 | } |
544 | ||
545 | /* Delete RIPng enable network. */ | |
5c84b9a5 | 546 | int ripng_enable_network_delete(struct ripng *ripng, struct prefix *p) |
718e3744 | 547 | { |
fe08ba7e | 548 | struct agg_node *node; |
718e3744 | 549 | |
29b94d58 | 550 | node = agg_node_lookup(ripng->enable_network, p); |
d62a17ae | 551 | if (node) { |
552 | node->info = NULL; | |
718e3744 | 553 | |
d62a17ae | 554 | /* Unlock info lock. */ |
fe08ba7e | 555 | agg_unlock_node(node); |
718e3744 | 556 | |
d62a17ae | 557 | /* Unlock lookup lock. */ |
fe08ba7e | 558 | agg_unlock_node(node); |
718e3744 | 559 | |
cc48702b | 560 | return NB_OK; |
d62a17ae | 561 | } |
cc48702b RW |
562 | |
563 | return NB_ERR_INCONSISTENCY; | |
718e3744 | 564 | } |
565 | ||
566 | /* Lookup function. */ | |
5c84b9a5 | 567 | static int ripng_enable_if_lookup(struct ripng *ripng, const char *ifname) |
718e3744 | 568 | { |
d62a17ae | 569 | unsigned int i; |
570 | char *str; | |
571 | ||
b0ba762f RW |
572 | if (!ripng) |
573 | return -1; | |
574 | ||
575 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
576 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) | |
d62a17ae | 577 | if (strcmp(str, ifname) == 0) |
578 | return i; | |
579 | return -1; | |
718e3744 | 580 | } |
581 | ||
5c84b9a5 | 582 | int ripng_enable_if_add(struct ripng *ripng, const char *ifname) |
718e3744 | 583 | { |
d62a17ae | 584 | int ret; |
718e3744 | 585 | |
5c84b9a5 | 586 | ret = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 587 | if (ret >= 0) |
cc48702b | 588 | return NB_ERR_INCONSISTENCY; |
718e3744 | 589 | |
b0ba762f | 590 | vector_set(ripng->enable_if, strdup(ifname)); |
718e3744 | 591 | |
5c84b9a5 | 592 | ripng_enable_apply_all(ripng); |
a94434b6 | 593 | |
cc48702b | 594 | return NB_OK; |
718e3744 | 595 | } |
596 | ||
5c84b9a5 | 597 | int ripng_enable_if_delete(struct ripng *ripng, const char *ifname) |
718e3744 | 598 | { |
d62a17ae | 599 | int index; |
600 | char *str; | |
718e3744 | 601 | |
5c84b9a5 | 602 | index = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 603 | if (index < 0) |
cc48702b | 604 | return NB_ERR_INCONSISTENCY; |
718e3744 | 605 | |
b0ba762f | 606 | str = vector_slot(ripng->enable_if, index); |
d62a17ae | 607 | free(str); |
b0ba762f | 608 | vector_unset(ripng->enable_if, index); |
718e3744 | 609 | |
5c84b9a5 | 610 | ripng_enable_apply_all(ripng); |
a94434b6 | 611 | |
cc48702b | 612 | return NB_OK; |
718e3744 | 613 | } |
614 | ||
615 | /* Wake up interface. */ | |
d62a17ae | 616 | static int ripng_interface_wakeup(struct thread *t) |
718e3744 | 617 | { |
d62a17ae | 618 | struct interface *ifp; |
619 | struct ripng_interface *ri; | |
718e3744 | 620 | |
d62a17ae | 621 | /* Get interface. */ |
622 | ifp = THREAD_ARG(t); | |
718e3744 | 623 | |
d62a17ae | 624 | ri = ifp->info; |
625 | ri->t_wakeup = NULL; | |
718e3744 | 626 | |
d62a17ae | 627 | /* Join to multicast group. */ |
5c84b9a5 | 628 | if (ripng_multicast_join(ifp, ri->ripng->sock) < 0) { |
450971aa | 629 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
630 | "multicast join failed, interface %s not running", |
631 | ifp->name); | |
d62a17ae | 632 | return 0; |
633 | } | |
634 | ||
635 | /* Set running flag. */ | |
636 | ri->running = 1; | |
718e3744 | 637 | |
d62a17ae | 638 | /* Send RIP request to the interface. */ |
639 | ripng_request(ifp); | |
718e3744 | 640 | |
d62a17ae | 641 | return 0; |
718e3744 | 642 | } |
643 | ||
d62a17ae | 644 | static void ripng_connect_set(struct interface *ifp, int set) |
a94434b6 | 645 | { |
5c84b9a5 RW |
646 | struct ripng_interface *ri = ifp->info; |
647 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 648 | struct listnode *node, *nnode; |
649 | struct connected *connected; | |
650 | struct prefix_ipv6 address; | |
651 | ||
652 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, connected)) { | |
653 | struct prefix *p; | |
654 | p = connected->address; | |
655 | ||
656 | if (p->family != AF_INET6) | |
657 | continue; | |
658 | ||
659 | address.family = AF_INET6; | |
660 | address.prefix = p->u.prefix6; | |
661 | address.prefixlen = p->prefixlen; | |
662 | apply_mask_ipv6(&address); | |
663 | ||
664 | if (set) { | |
665 | /* Check once more wether this prefix is within a | |
666 | * "network IF_OR_PREF" one */ | |
5c84b9a5 RW |
667 | if ((ripng_enable_if_lookup(ripng, connected->ifp->name) |
668 | >= 0) | |
d62a17ae | 669 | || (ripng_enable_network_lookup2(connected) >= 0)) |
670 | ripng_redistribute_add( | |
5c84b9a5 | 671 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 672 | RIPNG_ROUTE_INTERFACE, &address, |
673 | connected->ifp->ifindex, NULL, 0); | |
674 | } else { | |
5c84b9a5 RW |
675 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
676 | RIPNG_ROUTE_INTERFACE, | |
677 | &address, | |
678 | connected->ifp->ifindex); | |
679 | if (ripng_redistribute_check(ripng, | |
680 | ZEBRA_ROUTE_CONNECT)) | |
d62a17ae | 681 | ripng_redistribute_add( |
5c84b9a5 | 682 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 683 | RIPNG_ROUTE_REDISTRIBUTE, &address, |
684 | connected->ifp->ifindex, NULL, 0); | |
685 | } | |
686 | } | |
a94434b6 | 687 | } |
688 | ||
718e3744 | 689 | /* Check RIPng is enabed on this interface. */ |
d62a17ae | 690 | void ripng_enable_apply(struct interface *ifp) |
718e3744 | 691 | { |
d62a17ae | 692 | int ret; |
693 | struct ripng_interface *ri = NULL; | |
694 | ||
695 | /* Check interface. */ | |
696 | if (!if_is_up(ifp)) | |
697 | return; | |
698 | ||
699 | ri = ifp->info; | |
700 | ||
701 | /* Is this interface a candidate for RIPng ? */ | |
702 | ret = ripng_enable_network_lookup_if(ifp); | |
703 | ||
704 | /* If the interface is matched. */ | |
705 | if (ret > 0) | |
706 | ri->enable_network = 1; | |
707 | else | |
708 | ri->enable_network = 0; | |
709 | ||
710 | /* Check interface name configuration. */ | |
5c84b9a5 | 711 | ret = ripng_enable_if_lookup(ri->ripng, ifp->name); |
d62a17ae | 712 | if (ret >= 0) |
713 | ri->enable_interface = 1; | |
714 | else | |
715 | ri->enable_interface = 0; | |
716 | ||
717 | /* any candidate interface MUST have a link-local IPv6 address */ | |
718 | if ((!ripng_if_ipv6_lladdress_check(ifp)) | |
719 | && (ri->enable_network || ri->enable_interface)) { | |
720 | ri->enable_network = 0; | |
721 | ri->enable_interface = 0; | |
722 | zlog_warn("Interface %s does not have any link-local address", | |
723 | ifp->name); | |
724 | } | |
725 | ||
726 | /* Update running status of the interface. */ | |
727 | if (ri->enable_network || ri->enable_interface) { | |
728 | zlog_info("RIPng INTERFACE ON %s", ifp->name); | |
729 | ||
730 | /* Add interface wake up thread. */ | |
731 | thread_add_timer(master, ripng_interface_wakeup, ifp, 1, | |
732 | &ri->t_wakeup); | |
733 | ||
734 | ripng_connect_set(ifp, 1); | |
735 | } else { | |
736 | if (ri->running) { | |
737 | /* Might as well clean up the route table as well | |
738 | * ripng_if_down sets to 0 ri->running, and displays | |
739 | *"turn off %s" | |
740 | **/ | |
741 | ripng_if_down(ifp); | |
742 | ||
743 | ripng_connect_set(ifp, 0); | |
744 | } | |
718e3744 | 745 | } |
718e3744 | 746 | } |
747 | ||
748 | /* Set distribute list to all interfaces. */ | |
5c84b9a5 | 749 | static void ripng_enable_apply_all(struct ripng *ripng) |
718e3744 | 750 | { |
d62a17ae | 751 | struct interface *ifp; |
718e3744 | 752 | |
dde7b15b | 753 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 754 | ripng_enable_apply(ifp); |
718e3744 | 755 | } |
6b0655a2 | 756 | |
a94434b6 | 757 | /* Clear all network and neighbor configuration */ |
5c84b9a5 | 758 | void ripng_clean_network(struct ripng *ripng) |
a94434b6 | 759 | { |
d62a17ae | 760 | unsigned int i; |
761 | char *str; | |
fe08ba7e | 762 | struct agg_node *rn; |
d62a17ae | 763 | |
29b94d58 RW |
764 | /* ripng->enable_network */ |
765 | for (rn = agg_route_top(ripng->enable_network); rn; | |
fe08ba7e | 766 | rn = agg_route_next(rn)) |
d62a17ae | 767 | if (rn->info) { |
768 | rn->info = NULL; | |
fe08ba7e | 769 | agg_unlock_node(rn); |
d62a17ae | 770 | } |
771 | ||
b0ba762f RW |
772 | /* ripng->enable_if */ |
773 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
774 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) { | |
d62a17ae | 775 | free(str); |
b0ba762f | 776 | vector_slot(ripng->enable_if, i) = NULL; |
d62a17ae | 777 | } |
a94434b6 | 778 | } |
6b0655a2 | 779 | |
718e3744 | 780 | /* Utility function for looking up passive interface settings. */ |
5c84b9a5 RW |
781 | static int ripng_passive_interface_lookup(struct ripng *ripng, |
782 | const char *ifname) | |
718e3744 | 783 | { |
d62a17ae | 784 | unsigned int i; |
785 | char *str; | |
786 | ||
0c32404f RW |
787 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
788 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) | |
d62a17ae | 789 | if (strcmp(str, ifname) == 0) |
790 | return i; | |
791 | return -1; | |
718e3744 | 792 | } |
793 | ||
d62a17ae | 794 | void ripng_passive_interface_apply(struct interface *ifp) |
718e3744 | 795 | { |
d62a17ae | 796 | int ret; |
797 | struct ripng_interface *ri; | |
5c84b9a5 | 798 | struct ripng *ripng; |
718e3744 | 799 | |
d62a17ae | 800 | ri = ifp->info; |
5c84b9a5 RW |
801 | ripng = ri->ripng; |
802 | if (!ripng) | |
803 | return; | |
718e3744 | 804 | |
5c84b9a5 | 805 | ret = ripng_passive_interface_lookup(ripng, ifp->name); |
d62a17ae | 806 | if (ret < 0) |
807 | ri->passive = 0; | |
808 | else | |
809 | ri->passive = 1; | |
718e3744 | 810 | } |
811 | ||
5c84b9a5 | 812 | static void ripng_passive_interface_apply_all(struct ripng *ripng) |
718e3744 | 813 | { |
d62a17ae | 814 | struct interface *ifp; |
718e3744 | 815 | |
dde7b15b | 816 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 817 | ripng_passive_interface_apply(ifp); |
718e3744 | 818 | } |
819 | ||
820 | /* Passive interface. */ | |
5c84b9a5 | 821 | int ripng_passive_interface_set(struct ripng *ripng, const char *ifname) |
718e3744 | 822 | { |
5c84b9a5 | 823 | if (ripng_passive_interface_lookup(ripng, ifname) >= 0) |
22e8c7ae | 824 | return NB_ERR_INCONSISTENCY; |
718e3744 | 825 | |
0c32404f | 826 | vector_set(ripng->passive_interface, strdup(ifname)); |
718e3744 | 827 | |
5c84b9a5 | 828 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 829 | |
22e8c7ae | 830 | return NB_OK; |
718e3744 | 831 | } |
832 | ||
5c84b9a5 | 833 | int ripng_passive_interface_unset(struct ripng *ripng, const char *ifname) |
718e3744 | 834 | { |
d62a17ae | 835 | int i; |
836 | char *str; | |
718e3744 | 837 | |
5c84b9a5 | 838 | i = ripng_passive_interface_lookup(ripng, ifname); |
d62a17ae | 839 | if (i < 0) |
22e8c7ae | 840 | return NB_ERR_INCONSISTENCY; |
718e3744 | 841 | |
0c32404f | 842 | str = vector_slot(ripng->passive_interface, i); |
d62a17ae | 843 | free(str); |
0c32404f | 844 | vector_unset(ripng->passive_interface, i); |
718e3744 | 845 | |
5c84b9a5 | 846 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 847 | |
22e8c7ae | 848 | return NB_OK; |
718e3744 | 849 | } |
850 | ||
851 | /* Free all configured RIP passive-interface settings. */ | |
5c84b9a5 | 852 | void ripng_passive_interface_clean(struct ripng *ripng) |
718e3744 | 853 | { |
d62a17ae | 854 | unsigned int i; |
855 | char *str; | |
856 | ||
0c32404f RW |
857 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
858 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) { | |
d62a17ae | 859 | free(str); |
0c32404f | 860 | vector_slot(ripng->passive_interface, i) = NULL; |
d62a17ae | 861 | } |
5c84b9a5 | 862 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 863 | } |
864 | ||
865 | /* Write RIPng enable network and interface to the vty. */ | |
5c84b9a5 | 866 | int ripng_network_write(struct vty *vty, struct ripng *ripng) |
718e3744 | 867 | { |
d62a17ae | 868 | unsigned int i; |
869 | const char *ifname; | |
fe08ba7e | 870 | struct agg_node *node; |
d62a17ae | 871 | |
872 | /* Write enable network. */ | |
29b94d58 | 873 | for (node = agg_route_top(ripng->enable_network); node; |
fe08ba7e | 874 | node = agg_route_next(node)) |
26a3ffd6 DS |
875 | if (node->info) |
876 | vty_out(vty, " %pRN\n", node); | |
d62a17ae | 877 | |
878 | /* Write enable interface. */ | |
b0ba762f RW |
879 | for (i = 0; i < vector_active(ripng->enable_if); i++) |
880 | if ((ifname = vector_slot(ripng->enable_if, i)) != NULL) | |
22e8c7ae | 881 | vty_out(vty, " %s\n", ifname); |
d62a17ae | 882 | |
883 | return 0; | |
718e3744 | 884 | } |
885 | ||
d62a17ae | 886 | static struct ripng_interface *ri_new(void) |
718e3744 | 887 | { |
d62a17ae | 888 | struct ripng_interface *ri; |
5c84b9a5 | 889 | |
eaf58ba9 | 890 | ri = XCALLOC(MTYPE_RIPNG_IF, sizeof(struct ripng_interface)); |
a94434b6 | 891 | |
d62a17ae | 892 | /* Set default split-horizon behavior. If the interface is Frame |
893 | Relay or SMDS is enabled, the default value for split-horizon is | |
894 | off. But currently Zebra does detect Frame Relay or SMDS | |
895 | interface. So all interface is set to split horizon. */ | |
d406db4c RW |
896 | ri->split_horizon = |
897 | yang_get_default_enum("%s/split-horizon", RIPNG_IFACE); | |
a94434b6 | 898 | |
d62a17ae | 899 | return ri; |
718e3744 | 900 | } |
901 | ||
dde7b15b RW |
902 | void ripng_interface_sync(struct interface *ifp) |
903 | { | |
904 | struct vrf *vrf; | |
905 | ||
a36898e7 | 906 | vrf = vrf_lookup_by_id(ifp->vrf_id); |
dde7b15b RW |
907 | if (vrf) { |
908 | struct ripng_interface *ri; | |
909 | ||
910 | ri = ifp->info; | |
911 | if (ri) | |
912 | ri->ripng = vrf->info; | |
913 | } | |
914 | } | |
915 | ||
d62a17ae | 916 | static int ripng_if_new_hook(struct interface *ifp) |
718e3744 | 917 | { |
d62a17ae | 918 | ifp->info = ri_new(); |
dde7b15b RW |
919 | ripng_interface_sync(ifp); |
920 | ||
d62a17ae | 921 | return 0; |
718e3744 | 922 | } |
923 | ||
a94434b6 | 924 | /* Called when interface structure deleted. */ |
d62a17ae | 925 | static int ripng_if_delete_hook(struct interface *ifp) |
a94434b6 | 926 | { |
eaf58ba9 | 927 | XFREE(MTYPE_RIPNG_IF, ifp->info); |
d62a17ae | 928 | return 0; |
a94434b6 | 929 | } |
930 | ||
718e3744 | 931 | /* Configuration write function for ripngd. */ |
d62a17ae | 932 | static int interface_config_write(struct vty *vty) |
718e3744 | 933 | { |
dde7b15b | 934 | struct vrf *vrf; |
d62a17ae | 935 | int write = 0; |
936 | ||
dde7b15b RW |
937 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { |
938 | struct interface *ifp; | |
d62a17ae | 939 | |
dde7b15b RW |
940 | FOR_ALL_INTERFACES (vrf, ifp) { |
941 | struct lyd_node *dnode; | |
d62a17ae | 942 | |
dde7b15b RW |
943 | dnode = yang_dnode_get( |
944 | running_config->dnode, | |
945 | "/frr-interface:lib/interface[name='%s'][vrf='%s']", | |
946 | ifp->name, vrf->name); | |
947 | if (dnode == NULL) | |
948 | continue; | |
d62a17ae | 949 | |
dde7b15b RW |
950 | write = 1; |
951 | nb_cli_show_dnode_cmds(vty, dnode, false); | |
952 | } | |
a94434b6 | 953 | } |
d406db4c | 954 | |
d62a17ae | 955 | return write; |
718e3744 | 956 | } |
957 | ||
612c2c15 | 958 | static int interface_config_write(struct vty *vty); |
718e3744 | 959 | /* ripngd's interface node. */ |
d62a17ae | 960 | static struct cmd_node interface_node = { |
f4b8291f | 961 | .name = "interface", |
62b346ee | 962 | .node = INTERFACE_NODE, |
24389580 | 963 | .parent_node = CONFIG_NODE, |
62b346ee | 964 | .prompt = "%s(config-if)# ", |
612c2c15 | 965 | .config_write = interface_config_write, |
718e3744 | 966 | }; |
967 | ||
968 | /* Initialization of interface. */ | |
4d762f26 | 969 | void ripng_if_init(void) |
718e3744 | 970 | { |
d62a17ae | 971 | /* Interface initialize. */ |
ce19a04a DL |
972 | hook_register_prio(if_add, 0, ripng_if_new_hook); |
973 | hook_register_prio(if_del, 0, ripng_if_delete_hook); | |
718e3744 | 974 | |
d62a17ae | 975 | /* Install interface node. */ |
612c2c15 | 976 | install_node(&interface_node); |
d62a17ae | 977 | if_cmd_init(); |
138c5a74 DS |
978 | if_zapi_callbacks(ripng_ifp_create, ripng_ifp_up, |
979 | ripng_ifp_down, ripng_ifp_destroy); | |
718e3744 | 980 | } |