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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 | |
dde7b15b | 277 | zlog_info( |
24c4ee4a DS |
278 | "interface delete %s vrf %s(%u) index %d flags %#llx metric %d mtu %d", |
279 | ifp->name, VRF_LOGNAME(vrf), ifp->vrf_id, ifp->ifindex, | |
dde7b15b | 280 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
a94434b6 | 281 | |
d62a17ae | 282 | return 0; |
718e3744 | 283 | } |
284 | ||
dde7b15b | 285 | /* VRF update for an interface. */ |
121f9dee | 286 | int ripng_interface_vrf_update(ZAPI_CALLBACK_ARGS) |
dde7b15b RW |
287 | { |
288 | struct interface *ifp; | |
289 | vrf_id_t new_vrf_id; | |
290 | ||
291 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
292 | &new_vrf_id); | |
293 | if (!ifp) | |
294 | return 0; | |
295 | ||
24c4ee4a DS |
296 | if (IS_RIPNG_DEBUG_ZEBRA) { |
297 | struct vrf *vrf = vrf_lookup_by_id(ifp->vrf_id); | |
298 | struct vrf *nvrf = vrf_lookup_by_id(new_vrf_id); | |
299 | ||
300 | zlog_debug("interface %s VRF change vrf %s(%u) new vrf %s(%u)", | |
301 | ifp->name, VRF_LOGNAME(vrf), vrf_id, | |
302 | VRF_LOGNAME(nvrf), new_vrf_id); | |
303 | } | |
dde7b15b | 304 | |
a36898e7 | 305 | if_update_to_new_vrf(ifp, new_vrf_id); |
dde7b15b RW |
306 | ripng_interface_sync(ifp); |
307 | ||
308 | return 0; | |
309 | } | |
310 | ||
5c84b9a5 | 311 | void ripng_interface_clean(struct ripng *ripng) |
a94434b6 | 312 | { |
d62a17ae | 313 | struct interface *ifp; |
314 | struct ripng_interface *ri; | |
a94434b6 | 315 | |
dde7b15b | 316 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 317 | ri = ifp->info; |
a94434b6 | 318 | |
d62a17ae | 319 | ri->enable_network = 0; |
320 | ri->enable_interface = 0; | |
321 | ri->running = 0; | |
a94434b6 | 322 | |
d62a17ae | 323 | if (ri->t_wakeup) { |
324 | thread_cancel(ri->t_wakeup); | |
325 | ri->t_wakeup = NULL; | |
326 | } | |
327 | } | |
328 | } | |
a94434b6 | 329 | |
d62a17ae | 330 | static void ripng_apply_address_add(struct connected *ifc) |
331 | { | |
5c84b9a5 RW |
332 | struct ripng_interface *ri = ifc->ifp->info; |
333 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 334 | struct prefix_ipv6 address; |
335 | struct prefix *p; | |
336 | ||
337 | if (!ripng) | |
338 | return; | |
339 | ||
340 | if (!if_is_up(ifc->ifp)) | |
341 | return; | |
342 | ||
343 | p = ifc->address; | |
344 | ||
345 | memset(&address, 0, sizeof(address)); | |
346 | address.family = p->family; | |
347 | address.prefix = p->u.prefix6; | |
348 | address.prefixlen = p->prefixlen; | |
349 | apply_mask_ipv6(&address); | |
350 | ||
351 | /* Check if this interface is RIP enabled or not | |
352 | or Check if this address's prefix is RIP enabled */ | |
5c84b9a5 | 353 | if ((ripng_enable_if_lookup(ripng, ifc->ifp->name) >= 0) |
d62a17ae | 354 | || (ripng_enable_network_lookup2(ifc) >= 0)) |
5c84b9a5 | 355 | ripng_redistribute_add(ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 356 | RIPNG_ROUTE_INTERFACE, &address, |
357 | ifc->ifp->ifindex, NULL, 0); | |
a94434b6 | 358 | } |
359 | ||
121f9dee | 360 | int ripng_interface_address_add(ZAPI_CALLBACK_ARGS) |
718e3744 | 361 | { |
d62a17ae | 362 | struct connected *c; |
363 | struct prefix *p; | |
718e3744 | 364 | |
d62a17ae | 365 | c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, |
366 | zclient->ibuf, vrf_id); | |
718e3744 | 367 | |
d62a17ae | 368 | if (c == NULL) |
369 | return 0; | |
718e3744 | 370 | |
d62a17ae | 371 | p = c->address; |
718e3744 | 372 | |
d62a17ae | 373 | if (p->family == AF_INET6) { |
374 | struct ripng_interface *ri = c->ifp->info; | |
a94434b6 | 375 | |
d62a17ae | 376 | if (IS_RIPNG_DEBUG_ZEBRA) |
377 | zlog_debug("RIPng connected address %s/%d add", | |
378 | inet6_ntoa(p->u.prefix6), p->prefixlen); | |
a94434b6 | 379 | |
d62a17ae | 380 | /* Check is this prefix needs to be redistributed. */ |
381 | ripng_apply_address_add(c); | |
a94434b6 | 382 | |
d62a17ae | 383 | /* Let's try once again whether the interface could be activated |
384 | */ | |
385 | if (!ri->running) { | |
386 | /* Check if this interface is RIP enabled or not.*/ | |
387 | ripng_enable_apply(c->ifp); | |
a94434b6 | 388 | |
d62a17ae | 389 | /* Apply distribute list to the interface. */ |
390 | ripng_distribute_update_interface(c->ifp); | |
718e3744 | 391 | |
d62a17ae | 392 | /* Check interface routemap. */ |
393 | ripng_if_rmap_update_interface(c->ifp); | |
394 | } | |
395 | } | |
396 | ||
397 | return 0; | |
718e3744 | 398 | } |
399 | ||
d62a17ae | 400 | static void ripng_apply_address_del(struct connected *ifc) |
401 | { | |
5c84b9a5 RW |
402 | struct ripng_interface *ri = ifc->ifp->info; |
403 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 404 | struct prefix_ipv6 address; |
405 | struct prefix *p; | |
a94434b6 | 406 | |
d62a17ae | 407 | if (!ripng) |
408 | return; | |
a94434b6 | 409 | |
d62a17ae | 410 | if (!if_is_up(ifc->ifp)) |
411 | return; | |
a94434b6 | 412 | |
d62a17ae | 413 | p = ifc->address; |
a94434b6 | 414 | |
d62a17ae | 415 | memset(&address, 0, sizeof(address)); |
416 | address.family = p->family; | |
417 | address.prefix = p->u.prefix6; | |
418 | address.prefixlen = p->prefixlen; | |
419 | apply_mask_ipv6(&address); | |
a94434b6 | 420 | |
5c84b9a5 RW |
421 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
422 | RIPNG_ROUTE_INTERFACE, &address, | |
423 | ifc->ifp->ifindex); | |
a94434b6 | 424 | } |
425 | ||
121f9dee | 426 | int ripng_interface_address_delete(ZAPI_CALLBACK_ARGS) |
718e3744 | 427 | { |
d62a17ae | 428 | struct connected *ifc; |
429 | struct prefix *p; | |
430 | char buf[INET6_ADDRSTRLEN]; | |
431 | ||
432 | ifc = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, | |
433 | zclient->ibuf, vrf_id); | |
434 | ||
435 | if (ifc) { | |
436 | p = ifc->address; | |
437 | ||
438 | if (p->family == AF_INET6) { | |
439 | if (IS_RIPNG_DEBUG_ZEBRA) | |
440 | zlog_debug( | |
441 | "RIPng connected address %s/%d delete", | |
442 | inet_ntop(AF_INET6, &p->u.prefix6, buf, | |
443 | INET6_ADDRSTRLEN), | |
444 | p->prefixlen); | |
445 | ||
446 | /* Check wether this prefix needs to be removed. */ | |
447 | ripng_apply_address_del(ifc); | |
448 | } | |
721c0857 | 449 | connected_free(&ifc); |
718e3744 | 450 | } |
718e3744 | 451 | |
d62a17ae | 452 | return 0; |
718e3744 | 453 | } |
6b0655a2 | 454 | |
718e3744 | 455 | /* Lookup RIPng enable network. */ |
a94434b6 | 456 | /* Check wether the interface has at least a connected prefix that |
29b94d58 | 457 | * is within the ripng->enable_network table. */ |
d62a17ae | 458 | static int ripng_enable_network_lookup_if(struct interface *ifp) |
718e3744 | 459 | { |
5c84b9a5 RW |
460 | struct ripng_interface *ri = ifp->info; |
461 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 462 | struct listnode *node; |
463 | struct connected *connected; | |
464 | struct prefix_ipv6 address; | |
465 | ||
29b94d58 RW |
466 | if (!ripng) |
467 | return -1; | |
468 | ||
d62a17ae | 469 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { |
470 | struct prefix *p; | |
fe08ba7e | 471 | struct agg_node *n; |
d62a17ae | 472 | |
473 | p = connected->address; | |
474 | ||
475 | if (p->family == AF_INET6) { | |
476 | address.family = AF_INET6; | |
477 | address.prefix = p->u.prefix6; | |
478 | address.prefixlen = IPV6_MAX_BITLEN; | |
479 | ||
29b94d58 | 480 | n = agg_node_match(ripng->enable_network, |
fe08ba7e | 481 | (struct prefix *)&address); |
ee6f7757 | 482 | if (n) { |
fe08ba7e | 483 | agg_unlock_node(n); |
d62a17ae | 484 | return 1; |
485 | } | |
486 | } | |
487 | } | |
488 | return -1; | |
718e3744 | 489 | } |
490 | ||
29b94d58 | 491 | /* Check wether connected is within the ripng->enable_network table. */ |
d62a17ae | 492 | static int ripng_enable_network_lookup2(struct connected *connected) |
a94434b6 | 493 | { |
5c84b9a5 RW |
494 | struct ripng_interface *ri = connected->ifp->info; |
495 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 496 | struct prefix_ipv6 address; |
497 | struct prefix *p; | |
a94434b6 | 498 | |
29b94d58 RW |
499 | if (!ripng) |
500 | return -1; | |
501 | ||
d62a17ae | 502 | p = connected->address; |
a94434b6 | 503 | |
d62a17ae | 504 | if (p->family == AF_INET6) { |
fe08ba7e | 505 | struct agg_node *node; |
a94434b6 | 506 | |
d62a17ae | 507 | address.family = p->family; |
508 | address.prefix = p->u.prefix6; | |
509 | address.prefixlen = IPV6_MAX_BITLEN; | |
a94434b6 | 510 | |
d62a17ae | 511 | /* LPM on p->family, p->u.prefix6/IPV6_MAX_BITLEN within |
29b94d58 RW |
512 | * ripng->enable_network */ |
513 | node = agg_node_match(ripng->enable_network, | |
fe08ba7e | 514 | (struct prefix *)&address); |
a94434b6 | 515 | |
d62a17ae | 516 | if (node) { |
fe08ba7e | 517 | agg_unlock_node(node); |
d62a17ae | 518 | return 1; |
519 | } | |
520 | } | |
a94434b6 | 521 | |
d62a17ae | 522 | return -1; |
a94434b6 | 523 | } |
524 | ||
718e3744 | 525 | /* Add RIPng enable network. */ |
5c84b9a5 | 526 | int ripng_enable_network_add(struct ripng *ripng, struct prefix *p) |
718e3744 | 527 | { |
fe08ba7e | 528 | struct agg_node *node; |
718e3744 | 529 | |
29b94d58 | 530 | node = agg_node_get(ripng->enable_network, p); |
718e3744 | 531 | |
d62a17ae | 532 | if (node->info) { |
fe08ba7e | 533 | agg_unlock_node(node); |
cc48702b | 534 | return NB_ERR_INCONSISTENCY; |
d62a17ae | 535 | } else |
536 | node->info = (void *)1; | |
718e3744 | 537 | |
d62a17ae | 538 | /* XXX: One should find a better solution than a generic one */ |
5c84b9a5 | 539 | ripng_enable_apply_all(ripng); |
a94434b6 | 540 | |
cc48702b | 541 | return NB_OK; |
718e3744 | 542 | } |
543 | ||
544 | /* Delete RIPng enable network. */ | |
5c84b9a5 | 545 | int ripng_enable_network_delete(struct ripng *ripng, struct prefix *p) |
718e3744 | 546 | { |
fe08ba7e | 547 | struct agg_node *node; |
718e3744 | 548 | |
29b94d58 | 549 | node = agg_node_lookup(ripng->enable_network, p); |
d62a17ae | 550 | if (node) { |
551 | node->info = NULL; | |
718e3744 | 552 | |
d62a17ae | 553 | /* Unlock info lock. */ |
fe08ba7e | 554 | agg_unlock_node(node); |
718e3744 | 555 | |
d62a17ae | 556 | /* Unlock lookup lock. */ |
fe08ba7e | 557 | agg_unlock_node(node); |
718e3744 | 558 | |
cc48702b | 559 | return NB_OK; |
d62a17ae | 560 | } |
cc48702b RW |
561 | |
562 | return NB_ERR_INCONSISTENCY; | |
718e3744 | 563 | } |
564 | ||
565 | /* Lookup function. */ | |
5c84b9a5 | 566 | static int ripng_enable_if_lookup(struct ripng *ripng, const char *ifname) |
718e3744 | 567 | { |
d62a17ae | 568 | unsigned int i; |
569 | char *str; | |
570 | ||
b0ba762f RW |
571 | if (!ripng) |
572 | return -1; | |
573 | ||
574 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
575 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) | |
d62a17ae | 576 | if (strcmp(str, ifname) == 0) |
577 | return i; | |
578 | return -1; | |
718e3744 | 579 | } |
580 | ||
5c84b9a5 | 581 | int ripng_enable_if_add(struct ripng *ripng, const char *ifname) |
718e3744 | 582 | { |
d62a17ae | 583 | int ret; |
718e3744 | 584 | |
5c84b9a5 | 585 | ret = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 586 | if (ret >= 0) |
cc48702b | 587 | return NB_ERR_INCONSISTENCY; |
718e3744 | 588 | |
b0ba762f | 589 | vector_set(ripng->enable_if, strdup(ifname)); |
718e3744 | 590 | |
5c84b9a5 | 591 | ripng_enable_apply_all(ripng); |
a94434b6 | 592 | |
cc48702b | 593 | return NB_OK; |
718e3744 | 594 | } |
595 | ||
5c84b9a5 | 596 | int ripng_enable_if_delete(struct ripng *ripng, const char *ifname) |
718e3744 | 597 | { |
d62a17ae | 598 | int index; |
599 | char *str; | |
718e3744 | 600 | |
5c84b9a5 | 601 | index = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 602 | if (index < 0) |
cc48702b | 603 | return NB_ERR_INCONSISTENCY; |
718e3744 | 604 | |
b0ba762f | 605 | str = vector_slot(ripng->enable_if, index); |
d62a17ae | 606 | free(str); |
b0ba762f | 607 | vector_unset(ripng->enable_if, index); |
718e3744 | 608 | |
5c84b9a5 | 609 | ripng_enable_apply_all(ripng); |
a94434b6 | 610 | |
cc48702b | 611 | return NB_OK; |
718e3744 | 612 | } |
613 | ||
614 | /* Wake up interface. */ | |
d62a17ae | 615 | static int ripng_interface_wakeup(struct thread *t) |
718e3744 | 616 | { |
d62a17ae | 617 | struct interface *ifp; |
618 | struct ripng_interface *ri; | |
718e3744 | 619 | |
d62a17ae | 620 | /* Get interface. */ |
621 | ifp = THREAD_ARG(t); | |
718e3744 | 622 | |
d62a17ae | 623 | ri = ifp->info; |
624 | ri->t_wakeup = NULL; | |
718e3744 | 625 | |
d62a17ae | 626 | /* Join to multicast group. */ |
5c84b9a5 | 627 | if (ripng_multicast_join(ifp, ri->ripng->sock) < 0) { |
450971aa | 628 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
629 | "multicast join failed, interface %s not running", |
630 | ifp->name); | |
d62a17ae | 631 | return 0; |
632 | } | |
633 | ||
634 | /* Set running flag. */ | |
635 | ri->running = 1; | |
718e3744 | 636 | |
d62a17ae | 637 | /* Send RIP request to the interface. */ |
638 | ripng_request(ifp); | |
718e3744 | 639 | |
d62a17ae | 640 | return 0; |
718e3744 | 641 | } |
642 | ||
d62a17ae | 643 | static void ripng_connect_set(struct interface *ifp, int set) |
a94434b6 | 644 | { |
5c84b9a5 RW |
645 | struct ripng_interface *ri = ifp->info; |
646 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 647 | struct listnode *node, *nnode; |
648 | struct connected *connected; | |
649 | struct prefix_ipv6 address; | |
650 | ||
651 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, connected)) { | |
652 | struct prefix *p; | |
653 | p = connected->address; | |
654 | ||
655 | if (p->family != AF_INET6) | |
656 | continue; | |
657 | ||
658 | address.family = AF_INET6; | |
659 | address.prefix = p->u.prefix6; | |
660 | address.prefixlen = p->prefixlen; | |
661 | apply_mask_ipv6(&address); | |
662 | ||
663 | if (set) { | |
664 | /* Check once more wether this prefix is within a | |
665 | * "network IF_OR_PREF" one */ | |
5c84b9a5 RW |
666 | if ((ripng_enable_if_lookup(ripng, connected->ifp->name) |
667 | >= 0) | |
d62a17ae | 668 | || (ripng_enable_network_lookup2(connected) >= 0)) |
669 | ripng_redistribute_add( | |
5c84b9a5 | 670 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 671 | RIPNG_ROUTE_INTERFACE, &address, |
672 | connected->ifp->ifindex, NULL, 0); | |
673 | } else { | |
5c84b9a5 RW |
674 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
675 | RIPNG_ROUTE_INTERFACE, | |
676 | &address, | |
677 | connected->ifp->ifindex); | |
678 | if (ripng_redistribute_check(ripng, | |
679 | ZEBRA_ROUTE_CONNECT)) | |
d62a17ae | 680 | ripng_redistribute_add( |
5c84b9a5 | 681 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 682 | RIPNG_ROUTE_REDISTRIBUTE, &address, |
683 | connected->ifp->ifindex, NULL, 0); | |
684 | } | |
685 | } | |
a94434b6 | 686 | } |
687 | ||
718e3744 | 688 | /* Check RIPng is enabed on this interface. */ |
d62a17ae | 689 | void ripng_enable_apply(struct interface *ifp) |
718e3744 | 690 | { |
d62a17ae | 691 | int ret; |
692 | struct ripng_interface *ri = NULL; | |
693 | ||
694 | /* Check interface. */ | |
695 | if (!if_is_up(ifp)) | |
696 | return; | |
697 | ||
698 | ri = ifp->info; | |
699 | ||
700 | /* Is this interface a candidate for RIPng ? */ | |
701 | ret = ripng_enable_network_lookup_if(ifp); | |
702 | ||
703 | /* If the interface is matched. */ | |
704 | if (ret > 0) | |
705 | ri->enable_network = 1; | |
706 | else | |
707 | ri->enable_network = 0; | |
708 | ||
709 | /* Check interface name configuration. */ | |
5c84b9a5 | 710 | ret = ripng_enable_if_lookup(ri->ripng, ifp->name); |
d62a17ae | 711 | if (ret >= 0) |
712 | ri->enable_interface = 1; | |
713 | else | |
714 | ri->enable_interface = 0; | |
715 | ||
716 | /* any candidate interface MUST have a link-local IPv6 address */ | |
717 | if ((!ripng_if_ipv6_lladdress_check(ifp)) | |
718 | && (ri->enable_network || ri->enable_interface)) { | |
719 | ri->enable_network = 0; | |
720 | ri->enable_interface = 0; | |
721 | zlog_warn("Interface %s does not have any link-local address", | |
722 | ifp->name); | |
723 | } | |
724 | ||
725 | /* Update running status of the interface. */ | |
726 | if (ri->enable_network || ri->enable_interface) { | |
727 | zlog_info("RIPng INTERFACE ON %s", ifp->name); | |
728 | ||
729 | /* Add interface wake up thread. */ | |
730 | thread_add_timer(master, ripng_interface_wakeup, ifp, 1, | |
731 | &ri->t_wakeup); | |
732 | ||
733 | ripng_connect_set(ifp, 1); | |
734 | } else { | |
735 | if (ri->running) { | |
736 | /* Might as well clean up the route table as well | |
737 | * ripng_if_down sets to 0 ri->running, and displays | |
738 | *"turn off %s" | |
739 | **/ | |
740 | ripng_if_down(ifp); | |
741 | ||
742 | ripng_connect_set(ifp, 0); | |
743 | } | |
718e3744 | 744 | } |
718e3744 | 745 | } |
746 | ||
747 | /* Set distribute list to all interfaces. */ | |
5c84b9a5 | 748 | static void ripng_enable_apply_all(struct ripng *ripng) |
718e3744 | 749 | { |
d62a17ae | 750 | struct interface *ifp; |
718e3744 | 751 | |
dde7b15b | 752 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 753 | ripng_enable_apply(ifp); |
718e3744 | 754 | } |
6b0655a2 | 755 | |
a94434b6 | 756 | /* Clear all network and neighbor configuration */ |
5c84b9a5 | 757 | void ripng_clean_network(struct ripng *ripng) |
a94434b6 | 758 | { |
d62a17ae | 759 | unsigned int i; |
760 | char *str; | |
fe08ba7e | 761 | struct agg_node *rn; |
d62a17ae | 762 | |
29b94d58 RW |
763 | /* ripng->enable_network */ |
764 | for (rn = agg_route_top(ripng->enable_network); rn; | |
fe08ba7e | 765 | rn = agg_route_next(rn)) |
d62a17ae | 766 | if (rn->info) { |
767 | rn->info = NULL; | |
fe08ba7e | 768 | agg_unlock_node(rn); |
d62a17ae | 769 | } |
770 | ||
b0ba762f RW |
771 | /* ripng->enable_if */ |
772 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
773 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) { | |
d62a17ae | 774 | free(str); |
b0ba762f | 775 | vector_slot(ripng->enable_if, i) = NULL; |
d62a17ae | 776 | } |
a94434b6 | 777 | } |
6b0655a2 | 778 | |
718e3744 | 779 | /* Utility function for looking up passive interface settings. */ |
5c84b9a5 RW |
780 | static int ripng_passive_interface_lookup(struct ripng *ripng, |
781 | const char *ifname) | |
718e3744 | 782 | { |
d62a17ae | 783 | unsigned int i; |
784 | char *str; | |
785 | ||
0c32404f RW |
786 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
787 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) | |
d62a17ae | 788 | if (strcmp(str, ifname) == 0) |
789 | return i; | |
790 | return -1; | |
718e3744 | 791 | } |
792 | ||
d62a17ae | 793 | void ripng_passive_interface_apply(struct interface *ifp) |
718e3744 | 794 | { |
d62a17ae | 795 | int ret; |
796 | struct ripng_interface *ri; | |
5c84b9a5 | 797 | struct ripng *ripng; |
718e3744 | 798 | |
d62a17ae | 799 | ri = ifp->info; |
5c84b9a5 RW |
800 | ripng = ri->ripng; |
801 | if (!ripng) | |
802 | return; | |
718e3744 | 803 | |
5c84b9a5 | 804 | ret = ripng_passive_interface_lookup(ripng, ifp->name); |
d62a17ae | 805 | if (ret < 0) |
806 | ri->passive = 0; | |
807 | else | |
808 | ri->passive = 1; | |
718e3744 | 809 | } |
810 | ||
5c84b9a5 | 811 | static void ripng_passive_interface_apply_all(struct ripng *ripng) |
718e3744 | 812 | { |
d62a17ae | 813 | struct interface *ifp; |
718e3744 | 814 | |
dde7b15b | 815 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 816 | ripng_passive_interface_apply(ifp); |
718e3744 | 817 | } |
818 | ||
819 | /* Passive interface. */ | |
5c84b9a5 | 820 | int ripng_passive_interface_set(struct ripng *ripng, const char *ifname) |
718e3744 | 821 | { |
5c84b9a5 | 822 | if (ripng_passive_interface_lookup(ripng, ifname) >= 0) |
22e8c7ae | 823 | return NB_ERR_INCONSISTENCY; |
718e3744 | 824 | |
0c32404f | 825 | vector_set(ripng->passive_interface, strdup(ifname)); |
718e3744 | 826 | |
5c84b9a5 | 827 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 828 | |
22e8c7ae | 829 | return NB_OK; |
718e3744 | 830 | } |
831 | ||
5c84b9a5 | 832 | int ripng_passive_interface_unset(struct ripng *ripng, const char *ifname) |
718e3744 | 833 | { |
d62a17ae | 834 | int i; |
835 | char *str; | |
718e3744 | 836 | |
5c84b9a5 | 837 | i = ripng_passive_interface_lookup(ripng, ifname); |
d62a17ae | 838 | if (i < 0) |
22e8c7ae | 839 | return NB_ERR_INCONSISTENCY; |
718e3744 | 840 | |
0c32404f | 841 | str = vector_slot(ripng->passive_interface, i); |
d62a17ae | 842 | free(str); |
0c32404f | 843 | vector_unset(ripng->passive_interface, i); |
718e3744 | 844 | |
5c84b9a5 | 845 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 846 | |
22e8c7ae | 847 | return NB_OK; |
718e3744 | 848 | } |
849 | ||
850 | /* Free all configured RIP passive-interface settings. */ | |
5c84b9a5 | 851 | void ripng_passive_interface_clean(struct ripng *ripng) |
718e3744 | 852 | { |
d62a17ae | 853 | unsigned int i; |
854 | char *str; | |
855 | ||
0c32404f RW |
856 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
857 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) { | |
d62a17ae | 858 | free(str); |
0c32404f | 859 | vector_slot(ripng->passive_interface, i) = NULL; |
d62a17ae | 860 | } |
5c84b9a5 | 861 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 862 | } |
863 | ||
864 | /* Write RIPng enable network and interface to the vty. */ | |
5c84b9a5 | 865 | int ripng_network_write(struct vty *vty, struct ripng *ripng) |
718e3744 | 866 | { |
d62a17ae | 867 | unsigned int i; |
868 | const char *ifname; | |
fe08ba7e | 869 | struct agg_node *node; |
d62a17ae | 870 | char buf[BUFSIZ]; |
871 | ||
872 | /* Write enable network. */ | |
29b94d58 | 873 | for (node = agg_route_top(ripng->enable_network); node; |
fe08ba7e | 874 | node = agg_route_next(node)) |
d62a17ae | 875 | if (node->info) { |
876 | struct prefix *p = &node->p; | |
22e8c7ae | 877 | vty_out(vty, " %s/%d\n", |
d62a17ae | 878 | inet_ntop(p->family, &p->u.prefix, buf, BUFSIZ), |
879 | p->prefixlen); | |
880 | } | |
881 | ||
882 | /* Write enable interface. */ | |
b0ba762f RW |
883 | for (i = 0; i < vector_active(ripng->enable_if); i++) |
884 | if ((ifname = vector_slot(ripng->enable_if, i)) != NULL) | |
22e8c7ae | 885 | vty_out(vty, " %s\n", ifname); |
d62a17ae | 886 | |
887 | return 0; | |
718e3744 | 888 | } |
889 | ||
d62a17ae | 890 | static struct ripng_interface *ri_new(void) |
718e3744 | 891 | { |
d62a17ae | 892 | struct ripng_interface *ri; |
5c84b9a5 | 893 | |
eaf58ba9 | 894 | ri = XCALLOC(MTYPE_RIPNG_IF, sizeof(struct ripng_interface)); |
a94434b6 | 895 | |
d62a17ae | 896 | /* Set default split-horizon behavior. If the interface is Frame |
897 | Relay or SMDS is enabled, the default value for split-horizon is | |
898 | off. But currently Zebra does detect Frame Relay or SMDS | |
899 | interface. So all interface is set to split horizon. */ | |
d406db4c RW |
900 | ri->split_horizon = |
901 | yang_get_default_enum("%s/split-horizon", RIPNG_IFACE); | |
a94434b6 | 902 | |
d62a17ae | 903 | return ri; |
718e3744 | 904 | } |
905 | ||
dde7b15b RW |
906 | void ripng_interface_sync(struct interface *ifp) |
907 | { | |
908 | struct vrf *vrf; | |
909 | ||
a36898e7 | 910 | vrf = vrf_lookup_by_id(ifp->vrf_id); |
dde7b15b RW |
911 | if (vrf) { |
912 | struct ripng_interface *ri; | |
913 | ||
914 | ri = ifp->info; | |
915 | if (ri) | |
916 | ri->ripng = vrf->info; | |
917 | } | |
918 | } | |
919 | ||
d62a17ae | 920 | static int ripng_if_new_hook(struct interface *ifp) |
718e3744 | 921 | { |
d62a17ae | 922 | ifp->info = ri_new(); |
dde7b15b RW |
923 | ripng_interface_sync(ifp); |
924 | ||
d62a17ae | 925 | return 0; |
718e3744 | 926 | } |
927 | ||
a94434b6 | 928 | /* Called when interface structure deleted. */ |
d62a17ae | 929 | static int ripng_if_delete_hook(struct interface *ifp) |
a94434b6 | 930 | { |
eaf58ba9 | 931 | XFREE(MTYPE_RIPNG_IF, ifp->info); |
d62a17ae | 932 | return 0; |
a94434b6 | 933 | } |
934 | ||
718e3744 | 935 | /* Configuration write function for ripngd. */ |
d62a17ae | 936 | static int interface_config_write(struct vty *vty) |
718e3744 | 937 | { |
dde7b15b | 938 | struct vrf *vrf; |
d62a17ae | 939 | int write = 0; |
940 | ||
dde7b15b RW |
941 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { |
942 | struct interface *ifp; | |
d62a17ae | 943 | |
dde7b15b RW |
944 | FOR_ALL_INTERFACES (vrf, ifp) { |
945 | struct lyd_node *dnode; | |
d62a17ae | 946 | |
dde7b15b RW |
947 | dnode = yang_dnode_get( |
948 | running_config->dnode, | |
949 | "/frr-interface:lib/interface[name='%s'][vrf='%s']", | |
950 | ifp->name, vrf->name); | |
951 | if (dnode == NULL) | |
952 | continue; | |
d62a17ae | 953 | |
dde7b15b RW |
954 | write = 1; |
955 | nb_cli_show_dnode_cmds(vty, dnode, false); | |
956 | } | |
a94434b6 | 957 | } |
d406db4c | 958 | |
d62a17ae | 959 | return write; |
718e3744 | 960 | } |
961 | ||
962 | /* ripngd's interface node. */ | |
d62a17ae | 963 | static struct cmd_node interface_node = { |
964 | INTERFACE_NODE, "%s(config-if)# ", 1 /* VTYSH */ | |
718e3744 | 965 | }; |
966 | ||
967 | /* Initialization of interface. */ | |
4d762f26 | 968 | void ripng_if_init(void) |
718e3744 | 969 | { |
d62a17ae | 970 | /* Interface initialize. */ |
ce19a04a DL |
971 | hook_register_prio(if_add, 0, ripng_if_new_hook); |
972 | hook_register_prio(if_del, 0, ripng_if_delete_hook); | |
718e3744 | 973 | |
d62a17ae | 974 | /* Install interface node. */ |
975 | install_node(&interface_node, interface_config_write); | |
976 | if_cmd_init(); | |
138c5a74 DS |
977 | if_zapi_callbacks(ripng_ifp_create, ripng_ifp_up, |
978 | ripng_ifp_down, ripng_ifp_destroy); | |
718e3744 | 979 | } |