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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 | |
46 | #define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP | |
47 | #endif | |
48 | #ifndef IPV6_LEAVE_GROUP | |
49 | #define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP | |
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. */ | |
121f9dee | 199 | int ripng_interface_up(ZAPI_CALLBACK_ARGS) |
718e3744 | 200 | { |
d62a17ae | 201 | struct stream *s; |
202 | struct interface *ifp; | |
718e3744 | 203 | |
d62a17ae | 204 | /* zebra_interface_state_read() updates interface structure in iflist. |
205 | */ | |
206 | s = zclient->ibuf; | |
207 | ifp = zebra_interface_state_read(s, vrf_id); | |
718e3744 | 208 | |
d62a17ae | 209 | if (ifp == NULL) |
210 | return 0; | |
718e3744 | 211 | |
d62a17ae | 212 | if (IS_RIPNG_DEBUG_ZEBRA) |
213 | zlog_debug( | |
dde7b15b | 214 | "interface up %s vrf %u index %d flags %llx metric %d mtu %d", |
a36898e7 | 215 | ifp->name, ifp->vrf_id, ifp->ifindex, |
dde7b15b RW |
216 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
217 | ||
218 | ripng_interface_sync(ifp); | |
718e3744 | 219 | |
d62a17ae | 220 | /* Check if this interface is RIPng enabled or not. */ |
221 | ripng_enable_apply(ifp); | |
718e3744 | 222 | |
d62a17ae | 223 | /* Check for a passive interface. */ |
224 | ripng_passive_interface_apply(ifp); | |
718e3744 | 225 | |
d62a17ae | 226 | /* Apply distribute list to the all interface. */ |
227 | ripng_distribute_update_interface(ifp); | |
718e3744 | 228 | |
d62a17ae | 229 | return 0; |
718e3744 | 230 | } |
231 | ||
232 | /* Inteface link down message processing. */ | |
121f9dee | 233 | int ripng_interface_down(ZAPI_CALLBACK_ARGS) |
718e3744 | 234 | { |
d62a17ae | 235 | struct stream *s; |
236 | struct interface *ifp; | |
718e3744 | 237 | |
d62a17ae | 238 | /* zebra_interface_state_read() updates interface structure in iflist. |
239 | */ | |
240 | s = zclient->ibuf; | |
241 | ifp = zebra_interface_state_read(s, vrf_id); | |
718e3744 | 242 | |
d62a17ae | 243 | if (ifp == NULL) |
244 | return 0; | |
718e3744 | 245 | |
dde7b15b | 246 | ripng_interface_sync(ifp); |
d62a17ae | 247 | ripng_if_down(ifp); |
718e3744 | 248 | |
d62a17ae | 249 | if (IS_RIPNG_DEBUG_ZEBRA) |
250 | zlog_debug( | |
dde7b15b | 251 | "interface down %s vrf %u index %d flags %#llx metric %d mtu %d", |
a36898e7 | 252 | ifp->name, ifp->vrf_id, ifp->ifindex, |
dde7b15b | 253 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
718e3744 | 254 | |
d62a17ae | 255 | return 0; |
718e3744 | 256 | } |
257 | ||
258 | /* Inteface addition message from zebra. */ | |
121f9dee | 259 | int ripng_interface_add(ZAPI_CALLBACK_ARGS) |
718e3744 | 260 | { |
d62a17ae | 261 | struct interface *ifp; |
718e3744 | 262 | |
d62a17ae | 263 | ifp = zebra_interface_add_read(zclient->ibuf, vrf_id); |
dde7b15b | 264 | ripng_interface_sync(ifp); |
718e3744 | 265 | |
d62a17ae | 266 | if (IS_RIPNG_DEBUG_ZEBRA) |
267 | zlog_debug( | |
dde7b15b | 268 | "RIPng interface add %s vrf %u index %d flags %#llx metric %d mtu %d", |
a36898e7 | 269 | ifp->name, ifp->vrf_id, ifp->ifindex, |
dde7b15b | 270 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
718e3744 | 271 | |
d62a17ae | 272 | /* Check is this interface is RIP enabled or not.*/ |
273 | ripng_enable_apply(ifp); | |
718e3744 | 274 | |
d62a17ae | 275 | /* Apply distribute list to the interface. */ |
276 | ripng_distribute_update_interface(ifp); | |
718e3744 | 277 | |
d62a17ae | 278 | /* Check interface routemap. */ |
279 | ripng_if_rmap_update_interface(ifp); | |
718e3744 | 280 | |
d62a17ae | 281 | return 0; |
718e3744 | 282 | } |
283 | ||
121f9dee | 284 | int ripng_interface_delete(ZAPI_CALLBACK_ARGS) |
718e3744 | 285 | { |
d62a17ae | 286 | struct interface *ifp; |
287 | struct stream *s; | |
a94434b6 | 288 | |
d62a17ae | 289 | s = zclient->ibuf; |
290 | /* zebra_interface_state_read() updates interface structure in iflist | |
291 | */ | |
292 | ifp = zebra_interface_state_read(s, vrf_id); | |
a94434b6 | 293 | |
d62a17ae | 294 | if (ifp == NULL) |
295 | return 0; | |
a94434b6 | 296 | |
dde7b15b | 297 | ripng_interface_sync(ifp); |
d62a17ae | 298 | if (if_is_up(ifp)) { |
299 | ripng_if_down(ifp); | |
300 | } | |
a94434b6 | 301 | |
dde7b15b RW |
302 | zlog_info( |
303 | "interface delete %s vrf %u index %d flags %#llx metric %d mtu %d", | |
a36898e7 | 304 | ifp->name, ifp->vrf_id, ifp->ifindex, |
dde7b15b | 305 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
a94434b6 | 306 | |
d62a17ae | 307 | /* To support pseudo interface do not free interface structure. */ |
308 | /* if_delete(ifp); */ | |
ff880b78 | 309 | if_set_index(ifp, IFINDEX_INTERNAL); |
a94434b6 | 310 | |
d62a17ae | 311 | return 0; |
718e3744 | 312 | } |
313 | ||
dde7b15b | 314 | /* VRF update for an interface. */ |
121f9dee | 315 | int ripng_interface_vrf_update(ZAPI_CALLBACK_ARGS) |
dde7b15b RW |
316 | { |
317 | struct interface *ifp; | |
318 | vrf_id_t new_vrf_id; | |
319 | ||
320 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
321 | &new_vrf_id); | |
322 | if (!ifp) | |
323 | return 0; | |
324 | ||
325 | if (IS_RIPNG_DEBUG_ZEBRA) | |
326 | zlog_debug("interface %s VRF change vrf_id %u new vrf id %u", | |
327 | ifp->name, vrf_id, new_vrf_id); | |
328 | ||
a36898e7 | 329 | if_update_to_new_vrf(ifp, new_vrf_id); |
dde7b15b RW |
330 | ripng_interface_sync(ifp); |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
5c84b9a5 | 335 | void ripng_interface_clean(struct ripng *ripng) |
a94434b6 | 336 | { |
d62a17ae | 337 | struct interface *ifp; |
338 | struct ripng_interface *ri; | |
a94434b6 | 339 | |
dde7b15b | 340 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 341 | ri = ifp->info; |
a94434b6 | 342 | |
d62a17ae | 343 | ri->enable_network = 0; |
344 | ri->enable_interface = 0; | |
345 | ri->running = 0; | |
a94434b6 | 346 | |
d62a17ae | 347 | if (ri->t_wakeup) { |
348 | thread_cancel(ri->t_wakeup); | |
349 | ri->t_wakeup = NULL; | |
350 | } | |
351 | } | |
352 | } | |
a94434b6 | 353 | |
d62a17ae | 354 | static void ripng_apply_address_add(struct connected *ifc) |
355 | { | |
5c84b9a5 RW |
356 | struct ripng_interface *ri = ifc->ifp->info; |
357 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 358 | struct prefix_ipv6 address; |
359 | struct prefix *p; | |
360 | ||
361 | if (!ripng) | |
362 | return; | |
363 | ||
364 | if (!if_is_up(ifc->ifp)) | |
365 | return; | |
366 | ||
367 | p = ifc->address; | |
368 | ||
369 | memset(&address, 0, sizeof(address)); | |
370 | address.family = p->family; | |
371 | address.prefix = p->u.prefix6; | |
372 | address.prefixlen = p->prefixlen; | |
373 | apply_mask_ipv6(&address); | |
374 | ||
375 | /* Check if this interface is RIP enabled or not | |
376 | or Check if this address's prefix is RIP enabled */ | |
5c84b9a5 | 377 | if ((ripng_enable_if_lookup(ripng, ifc->ifp->name) >= 0) |
d62a17ae | 378 | || (ripng_enable_network_lookup2(ifc) >= 0)) |
5c84b9a5 | 379 | ripng_redistribute_add(ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 380 | RIPNG_ROUTE_INTERFACE, &address, |
381 | ifc->ifp->ifindex, NULL, 0); | |
a94434b6 | 382 | } |
383 | ||
121f9dee | 384 | int ripng_interface_address_add(ZAPI_CALLBACK_ARGS) |
718e3744 | 385 | { |
d62a17ae | 386 | struct connected *c; |
387 | struct prefix *p; | |
718e3744 | 388 | |
d62a17ae | 389 | c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, |
390 | zclient->ibuf, vrf_id); | |
718e3744 | 391 | |
d62a17ae | 392 | if (c == NULL) |
393 | return 0; | |
718e3744 | 394 | |
d62a17ae | 395 | p = c->address; |
718e3744 | 396 | |
d62a17ae | 397 | if (p->family == AF_INET6) { |
398 | struct ripng_interface *ri = c->ifp->info; | |
a94434b6 | 399 | |
d62a17ae | 400 | if (IS_RIPNG_DEBUG_ZEBRA) |
401 | zlog_debug("RIPng connected address %s/%d add", | |
402 | inet6_ntoa(p->u.prefix6), p->prefixlen); | |
a94434b6 | 403 | |
d62a17ae | 404 | /* Check is this prefix needs to be redistributed. */ |
405 | ripng_apply_address_add(c); | |
a94434b6 | 406 | |
d62a17ae | 407 | /* Let's try once again whether the interface could be activated |
408 | */ | |
409 | if (!ri->running) { | |
410 | /* Check if this interface is RIP enabled or not.*/ | |
411 | ripng_enable_apply(c->ifp); | |
a94434b6 | 412 | |
d62a17ae | 413 | /* Apply distribute list to the interface. */ |
414 | ripng_distribute_update_interface(c->ifp); | |
718e3744 | 415 | |
d62a17ae | 416 | /* Check interface routemap. */ |
417 | ripng_if_rmap_update_interface(c->ifp); | |
418 | } | |
419 | } | |
420 | ||
421 | return 0; | |
718e3744 | 422 | } |
423 | ||
d62a17ae | 424 | static void ripng_apply_address_del(struct connected *ifc) |
425 | { | |
5c84b9a5 RW |
426 | struct ripng_interface *ri = ifc->ifp->info; |
427 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 428 | struct prefix_ipv6 address; |
429 | struct prefix *p; | |
a94434b6 | 430 | |
d62a17ae | 431 | if (!ripng) |
432 | return; | |
a94434b6 | 433 | |
d62a17ae | 434 | if (!if_is_up(ifc->ifp)) |
435 | return; | |
a94434b6 | 436 | |
d62a17ae | 437 | p = ifc->address; |
a94434b6 | 438 | |
d62a17ae | 439 | memset(&address, 0, sizeof(address)); |
440 | address.family = p->family; | |
441 | address.prefix = p->u.prefix6; | |
442 | address.prefixlen = p->prefixlen; | |
443 | apply_mask_ipv6(&address); | |
a94434b6 | 444 | |
5c84b9a5 RW |
445 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
446 | RIPNG_ROUTE_INTERFACE, &address, | |
447 | ifc->ifp->ifindex); | |
a94434b6 | 448 | } |
449 | ||
121f9dee | 450 | int ripng_interface_address_delete(ZAPI_CALLBACK_ARGS) |
718e3744 | 451 | { |
d62a17ae | 452 | struct connected *ifc; |
453 | struct prefix *p; | |
454 | char buf[INET6_ADDRSTRLEN]; | |
455 | ||
456 | ifc = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, | |
457 | zclient->ibuf, vrf_id); | |
458 | ||
459 | if (ifc) { | |
460 | p = ifc->address; | |
461 | ||
462 | if (p->family == AF_INET6) { | |
463 | if (IS_RIPNG_DEBUG_ZEBRA) | |
464 | zlog_debug( | |
465 | "RIPng connected address %s/%d delete", | |
466 | inet_ntop(AF_INET6, &p->u.prefix6, buf, | |
467 | INET6_ADDRSTRLEN), | |
468 | p->prefixlen); | |
469 | ||
470 | /* Check wether this prefix needs to be removed. */ | |
471 | ripng_apply_address_del(ifc); | |
472 | } | |
473 | connected_free(ifc); | |
718e3744 | 474 | } |
718e3744 | 475 | |
d62a17ae | 476 | return 0; |
718e3744 | 477 | } |
6b0655a2 | 478 | |
718e3744 | 479 | /* Lookup RIPng enable network. */ |
a94434b6 | 480 | /* Check wether the interface has at least a connected prefix that |
29b94d58 | 481 | * is within the ripng->enable_network table. */ |
d62a17ae | 482 | static int ripng_enable_network_lookup_if(struct interface *ifp) |
718e3744 | 483 | { |
5c84b9a5 RW |
484 | struct ripng_interface *ri = ifp->info; |
485 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 486 | struct listnode *node; |
487 | struct connected *connected; | |
488 | struct prefix_ipv6 address; | |
489 | ||
29b94d58 RW |
490 | if (!ripng) |
491 | return -1; | |
492 | ||
d62a17ae | 493 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { |
494 | struct prefix *p; | |
fe08ba7e | 495 | struct agg_node *n; |
d62a17ae | 496 | |
497 | p = connected->address; | |
498 | ||
499 | if (p->family == AF_INET6) { | |
500 | address.family = AF_INET6; | |
501 | address.prefix = p->u.prefix6; | |
502 | address.prefixlen = IPV6_MAX_BITLEN; | |
503 | ||
29b94d58 | 504 | n = agg_node_match(ripng->enable_network, |
fe08ba7e | 505 | (struct prefix *)&address); |
ee6f7757 | 506 | if (n) { |
fe08ba7e | 507 | agg_unlock_node(n); |
d62a17ae | 508 | return 1; |
509 | } | |
510 | } | |
511 | } | |
512 | return -1; | |
718e3744 | 513 | } |
514 | ||
29b94d58 | 515 | /* Check wether connected is within the ripng->enable_network table. */ |
d62a17ae | 516 | static int ripng_enable_network_lookup2(struct connected *connected) |
a94434b6 | 517 | { |
5c84b9a5 RW |
518 | struct ripng_interface *ri = connected->ifp->info; |
519 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 520 | struct prefix_ipv6 address; |
521 | struct prefix *p; | |
a94434b6 | 522 | |
29b94d58 RW |
523 | if (!ripng) |
524 | return -1; | |
525 | ||
d62a17ae | 526 | p = connected->address; |
a94434b6 | 527 | |
d62a17ae | 528 | if (p->family == AF_INET6) { |
fe08ba7e | 529 | struct agg_node *node; |
a94434b6 | 530 | |
d62a17ae | 531 | address.family = p->family; |
532 | address.prefix = p->u.prefix6; | |
533 | address.prefixlen = IPV6_MAX_BITLEN; | |
a94434b6 | 534 | |
d62a17ae | 535 | /* LPM on p->family, p->u.prefix6/IPV6_MAX_BITLEN within |
29b94d58 RW |
536 | * ripng->enable_network */ |
537 | node = agg_node_match(ripng->enable_network, | |
fe08ba7e | 538 | (struct prefix *)&address); |
a94434b6 | 539 | |
d62a17ae | 540 | if (node) { |
fe08ba7e | 541 | agg_unlock_node(node); |
d62a17ae | 542 | return 1; |
543 | } | |
544 | } | |
a94434b6 | 545 | |
d62a17ae | 546 | return -1; |
a94434b6 | 547 | } |
548 | ||
718e3744 | 549 | /* Add RIPng enable network. */ |
5c84b9a5 | 550 | int ripng_enable_network_add(struct ripng *ripng, struct prefix *p) |
718e3744 | 551 | { |
fe08ba7e | 552 | struct agg_node *node; |
718e3744 | 553 | |
29b94d58 | 554 | node = agg_node_get(ripng->enable_network, p); |
718e3744 | 555 | |
d62a17ae | 556 | if (node->info) { |
fe08ba7e | 557 | agg_unlock_node(node); |
cc48702b | 558 | return NB_ERR_INCONSISTENCY; |
d62a17ae | 559 | } else |
560 | node->info = (void *)1; | |
718e3744 | 561 | |
d62a17ae | 562 | /* XXX: One should find a better solution than a generic one */ |
5c84b9a5 | 563 | ripng_enable_apply_all(ripng); |
a94434b6 | 564 | |
cc48702b | 565 | return NB_OK; |
718e3744 | 566 | } |
567 | ||
568 | /* Delete RIPng enable network. */ | |
5c84b9a5 | 569 | int ripng_enable_network_delete(struct ripng *ripng, struct prefix *p) |
718e3744 | 570 | { |
fe08ba7e | 571 | struct agg_node *node; |
718e3744 | 572 | |
29b94d58 | 573 | node = agg_node_lookup(ripng->enable_network, p); |
d62a17ae | 574 | if (node) { |
575 | node->info = NULL; | |
718e3744 | 576 | |
d62a17ae | 577 | /* Unlock info lock. */ |
fe08ba7e | 578 | agg_unlock_node(node); |
718e3744 | 579 | |
d62a17ae | 580 | /* Unlock lookup lock. */ |
fe08ba7e | 581 | agg_unlock_node(node); |
718e3744 | 582 | |
cc48702b | 583 | return NB_OK; |
d62a17ae | 584 | } |
cc48702b RW |
585 | |
586 | return NB_ERR_INCONSISTENCY; | |
718e3744 | 587 | } |
588 | ||
589 | /* Lookup function. */ | |
5c84b9a5 | 590 | static int ripng_enable_if_lookup(struct ripng *ripng, const char *ifname) |
718e3744 | 591 | { |
d62a17ae | 592 | unsigned int i; |
593 | char *str; | |
594 | ||
b0ba762f RW |
595 | if (!ripng) |
596 | return -1; | |
597 | ||
598 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
599 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) | |
d62a17ae | 600 | if (strcmp(str, ifname) == 0) |
601 | return i; | |
602 | return -1; | |
718e3744 | 603 | } |
604 | ||
5c84b9a5 | 605 | int ripng_enable_if_add(struct ripng *ripng, const char *ifname) |
718e3744 | 606 | { |
d62a17ae | 607 | int ret; |
718e3744 | 608 | |
5c84b9a5 | 609 | ret = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 610 | if (ret >= 0) |
cc48702b | 611 | return NB_ERR_INCONSISTENCY; |
718e3744 | 612 | |
b0ba762f | 613 | vector_set(ripng->enable_if, strdup(ifname)); |
718e3744 | 614 | |
5c84b9a5 | 615 | ripng_enable_apply_all(ripng); |
a94434b6 | 616 | |
cc48702b | 617 | return NB_OK; |
718e3744 | 618 | } |
619 | ||
5c84b9a5 | 620 | int ripng_enable_if_delete(struct ripng *ripng, const char *ifname) |
718e3744 | 621 | { |
d62a17ae | 622 | int index; |
623 | char *str; | |
718e3744 | 624 | |
5c84b9a5 | 625 | index = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 626 | if (index < 0) |
cc48702b | 627 | return NB_ERR_INCONSISTENCY; |
718e3744 | 628 | |
b0ba762f | 629 | str = vector_slot(ripng->enable_if, index); |
d62a17ae | 630 | free(str); |
b0ba762f | 631 | vector_unset(ripng->enable_if, index); |
718e3744 | 632 | |
5c84b9a5 | 633 | ripng_enable_apply_all(ripng); |
a94434b6 | 634 | |
cc48702b | 635 | return NB_OK; |
718e3744 | 636 | } |
637 | ||
638 | /* Wake up interface. */ | |
d62a17ae | 639 | static int ripng_interface_wakeup(struct thread *t) |
718e3744 | 640 | { |
d62a17ae | 641 | struct interface *ifp; |
642 | struct ripng_interface *ri; | |
718e3744 | 643 | |
d62a17ae | 644 | /* Get interface. */ |
645 | ifp = THREAD_ARG(t); | |
718e3744 | 646 | |
d62a17ae | 647 | ri = ifp->info; |
648 | ri->t_wakeup = NULL; | |
718e3744 | 649 | |
d62a17ae | 650 | /* Join to multicast group. */ |
5c84b9a5 | 651 | if (ripng_multicast_join(ifp, ri->ripng->sock) < 0) { |
450971aa | 652 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
653 | "multicast join failed, interface %s not running", |
654 | ifp->name); | |
d62a17ae | 655 | return 0; |
656 | } | |
657 | ||
658 | /* Set running flag. */ | |
659 | ri->running = 1; | |
718e3744 | 660 | |
d62a17ae | 661 | /* Send RIP request to the interface. */ |
662 | ripng_request(ifp); | |
718e3744 | 663 | |
d62a17ae | 664 | return 0; |
718e3744 | 665 | } |
666 | ||
d62a17ae | 667 | static void ripng_connect_set(struct interface *ifp, int set) |
a94434b6 | 668 | { |
5c84b9a5 RW |
669 | struct ripng_interface *ri = ifp->info; |
670 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 671 | struct listnode *node, *nnode; |
672 | struct connected *connected; | |
673 | struct prefix_ipv6 address; | |
674 | ||
675 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, connected)) { | |
676 | struct prefix *p; | |
677 | p = connected->address; | |
678 | ||
679 | if (p->family != AF_INET6) | |
680 | continue; | |
681 | ||
682 | address.family = AF_INET6; | |
683 | address.prefix = p->u.prefix6; | |
684 | address.prefixlen = p->prefixlen; | |
685 | apply_mask_ipv6(&address); | |
686 | ||
687 | if (set) { | |
688 | /* Check once more wether this prefix is within a | |
689 | * "network IF_OR_PREF" one */ | |
5c84b9a5 RW |
690 | if ((ripng_enable_if_lookup(ripng, connected->ifp->name) |
691 | >= 0) | |
d62a17ae | 692 | || (ripng_enable_network_lookup2(connected) >= 0)) |
693 | ripng_redistribute_add( | |
5c84b9a5 | 694 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 695 | RIPNG_ROUTE_INTERFACE, &address, |
696 | connected->ifp->ifindex, NULL, 0); | |
697 | } else { | |
5c84b9a5 RW |
698 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
699 | RIPNG_ROUTE_INTERFACE, | |
700 | &address, | |
701 | connected->ifp->ifindex); | |
702 | if (ripng_redistribute_check(ripng, | |
703 | ZEBRA_ROUTE_CONNECT)) | |
d62a17ae | 704 | ripng_redistribute_add( |
5c84b9a5 | 705 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 706 | RIPNG_ROUTE_REDISTRIBUTE, &address, |
707 | connected->ifp->ifindex, NULL, 0); | |
708 | } | |
709 | } | |
a94434b6 | 710 | } |
711 | ||
718e3744 | 712 | /* Check RIPng is enabed on this interface. */ |
d62a17ae | 713 | void ripng_enable_apply(struct interface *ifp) |
718e3744 | 714 | { |
d62a17ae | 715 | int ret; |
716 | struct ripng_interface *ri = NULL; | |
717 | ||
718 | /* Check interface. */ | |
719 | if (!if_is_up(ifp)) | |
720 | return; | |
721 | ||
722 | ri = ifp->info; | |
723 | ||
724 | /* Is this interface a candidate for RIPng ? */ | |
725 | ret = ripng_enable_network_lookup_if(ifp); | |
726 | ||
727 | /* If the interface is matched. */ | |
728 | if (ret > 0) | |
729 | ri->enable_network = 1; | |
730 | else | |
731 | ri->enable_network = 0; | |
732 | ||
733 | /* Check interface name configuration. */ | |
5c84b9a5 | 734 | ret = ripng_enable_if_lookup(ri->ripng, ifp->name); |
d62a17ae | 735 | if (ret >= 0) |
736 | ri->enable_interface = 1; | |
737 | else | |
738 | ri->enable_interface = 0; | |
739 | ||
740 | /* any candidate interface MUST have a link-local IPv6 address */ | |
741 | if ((!ripng_if_ipv6_lladdress_check(ifp)) | |
742 | && (ri->enable_network || ri->enable_interface)) { | |
743 | ri->enable_network = 0; | |
744 | ri->enable_interface = 0; | |
745 | zlog_warn("Interface %s does not have any link-local address", | |
746 | ifp->name); | |
747 | } | |
748 | ||
749 | /* Update running status of the interface. */ | |
750 | if (ri->enable_network || ri->enable_interface) { | |
751 | zlog_info("RIPng INTERFACE ON %s", ifp->name); | |
752 | ||
753 | /* Add interface wake up thread. */ | |
754 | thread_add_timer(master, ripng_interface_wakeup, ifp, 1, | |
755 | &ri->t_wakeup); | |
756 | ||
757 | ripng_connect_set(ifp, 1); | |
758 | } else { | |
759 | if (ri->running) { | |
760 | /* Might as well clean up the route table as well | |
761 | * ripng_if_down sets to 0 ri->running, and displays | |
762 | *"turn off %s" | |
763 | **/ | |
764 | ripng_if_down(ifp); | |
765 | ||
766 | ripng_connect_set(ifp, 0); | |
767 | } | |
718e3744 | 768 | } |
718e3744 | 769 | } |
770 | ||
771 | /* Set distribute list to all interfaces. */ | |
5c84b9a5 | 772 | static void ripng_enable_apply_all(struct ripng *ripng) |
718e3744 | 773 | { |
d62a17ae | 774 | struct interface *ifp; |
718e3744 | 775 | |
dde7b15b | 776 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 777 | ripng_enable_apply(ifp); |
718e3744 | 778 | } |
6b0655a2 | 779 | |
a94434b6 | 780 | /* Clear all network and neighbor configuration */ |
5c84b9a5 | 781 | void ripng_clean_network(struct ripng *ripng) |
a94434b6 | 782 | { |
d62a17ae | 783 | unsigned int i; |
784 | char *str; | |
fe08ba7e | 785 | struct agg_node *rn; |
d62a17ae | 786 | |
29b94d58 RW |
787 | /* ripng->enable_network */ |
788 | for (rn = agg_route_top(ripng->enable_network); rn; | |
fe08ba7e | 789 | rn = agg_route_next(rn)) |
d62a17ae | 790 | if (rn->info) { |
791 | rn->info = NULL; | |
fe08ba7e | 792 | agg_unlock_node(rn); |
d62a17ae | 793 | } |
794 | ||
b0ba762f RW |
795 | /* ripng->enable_if */ |
796 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
797 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) { | |
d62a17ae | 798 | free(str); |
b0ba762f | 799 | vector_slot(ripng->enable_if, i) = NULL; |
d62a17ae | 800 | } |
a94434b6 | 801 | } |
6b0655a2 | 802 | |
718e3744 | 803 | /* Utility function for looking up passive interface settings. */ |
5c84b9a5 RW |
804 | static int ripng_passive_interface_lookup(struct ripng *ripng, |
805 | const char *ifname) | |
718e3744 | 806 | { |
d62a17ae | 807 | unsigned int i; |
808 | char *str; | |
809 | ||
0c32404f RW |
810 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
811 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) | |
d62a17ae | 812 | if (strcmp(str, ifname) == 0) |
813 | return i; | |
814 | return -1; | |
718e3744 | 815 | } |
816 | ||
d62a17ae | 817 | void ripng_passive_interface_apply(struct interface *ifp) |
718e3744 | 818 | { |
d62a17ae | 819 | int ret; |
820 | struct ripng_interface *ri; | |
5c84b9a5 | 821 | struct ripng *ripng; |
718e3744 | 822 | |
d62a17ae | 823 | ri = ifp->info; |
5c84b9a5 RW |
824 | ripng = ri->ripng; |
825 | if (!ripng) | |
826 | return; | |
718e3744 | 827 | |
5c84b9a5 | 828 | ret = ripng_passive_interface_lookup(ripng, ifp->name); |
d62a17ae | 829 | if (ret < 0) |
830 | ri->passive = 0; | |
831 | else | |
832 | ri->passive = 1; | |
718e3744 | 833 | } |
834 | ||
5c84b9a5 | 835 | static void ripng_passive_interface_apply_all(struct ripng *ripng) |
718e3744 | 836 | { |
d62a17ae | 837 | struct interface *ifp; |
718e3744 | 838 | |
dde7b15b | 839 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 840 | ripng_passive_interface_apply(ifp); |
718e3744 | 841 | } |
842 | ||
843 | /* Passive interface. */ | |
5c84b9a5 | 844 | int ripng_passive_interface_set(struct ripng *ripng, const char *ifname) |
718e3744 | 845 | { |
5c84b9a5 | 846 | if (ripng_passive_interface_lookup(ripng, ifname) >= 0) |
22e8c7ae | 847 | return NB_ERR_INCONSISTENCY; |
718e3744 | 848 | |
0c32404f | 849 | vector_set(ripng->passive_interface, strdup(ifname)); |
718e3744 | 850 | |
5c84b9a5 | 851 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 852 | |
22e8c7ae | 853 | return NB_OK; |
718e3744 | 854 | } |
855 | ||
5c84b9a5 | 856 | int ripng_passive_interface_unset(struct ripng *ripng, const char *ifname) |
718e3744 | 857 | { |
d62a17ae | 858 | int i; |
859 | char *str; | |
718e3744 | 860 | |
5c84b9a5 | 861 | i = ripng_passive_interface_lookup(ripng, ifname); |
d62a17ae | 862 | if (i < 0) |
22e8c7ae | 863 | return NB_ERR_INCONSISTENCY; |
718e3744 | 864 | |
0c32404f | 865 | str = vector_slot(ripng->passive_interface, i); |
d62a17ae | 866 | free(str); |
0c32404f | 867 | vector_unset(ripng->passive_interface, i); |
718e3744 | 868 | |
5c84b9a5 | 869 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 870 | |
22e8c7ae | 871 | return NB_OK; |
718e3744 | 872 | } |
873 | ||
874 | /* Free all configured RIP passive-interface settings. */ | |
5c84b9a5 | 875 | void ripng_passive_interface_clean(struct ripng *ripng) |
718e3744 | 876 | { |
d62a17ae | 877 | unsigned int i; |
878 | char *str; | |
879 | ||
0c32404f RW |
880 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
881 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) { | |
d62a17ae | 882 | free(str); |
0c32404f | 883 | vector_slot(ripng->passive_interface, i) = NULL; |
d62a17ae | 884 | } |
5c84b9a5 | 885 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 886 | } |
887 | ||
888 | /* Write RIPng enable network and interface to the vty. */ | |
5c84b9a5 | 889 | int ripng_network_write(struct vty *vty, struct ripng *ripng) |
718e3744 | 890 | { |
d62a17ae | 891 | unsigned int i; |
892 | const char *ifname; | |
fe08ba7e | 893 | struct agg_node *node; |
d62a17ae | 894 | char buf[BUFSIZ]; |
895 | ||
896 | /* Write enable network. */ | |
29b94d58 | 897 | for (node = agg_route_top(ripng->enable_network); node; |
fe08ba7e | 898 | node = agg_route_next(node)) |
d62a17ae | 899 | if (node->info) { |
900 | struct prefix *p = &node->p; | |
22e8c7ae | 901 | vty_out(vty, " %s/%d\n", |
d62a17ae | 902 | inet_ntop(p->family, &p->u.prefix, buf, BUFSIZ), |
903 | p->prefixlen); | |
904 | } | |
905 | ||
906 | /* Write enable interface. */ | |
b0ba762f RW |
907 | for (i = 0; i < vector_active(ripng->enable_if); i++) |
908 | if ((ifname = vector_slot(ripng->enable_if, i)) != NULL) | |
22e8c7ae | 909 | vty_out(vty, " %s\n", ifname); |
d62a17ae | 910 | |
911 | return 0; | |
718e3744 | 912 | } |
913 | ||
d62a17ae | 914 | static struct ripng_interface *ri_new(void) |
718e3744 | 915 | { |
d62a17ae | 916 | struct ripng_interface *ri; |
5c84b9a5 | 917 | |
eaf58ba9 | 918 | ri = XCALLOC(MTYPE_RIPNG_IF, sizeof(struct ripng_interface)); |
a94434b6 | 919 | |
d62a17ae | 920 | /* Set default split-horizon behavior. If the interface is Frame |
921 | Relay or SMDS is enabled, the default value for split-horizon is | |
922 | off. But currently Zebra does detect Frame Relay or SMDS | |
923 | interface. So all interface is set to split horizon. */ | |
d406db4c RW |
924 | ri->split_horizon = |
925 | yang_get_default_enum("%s/split-horizon", RIPNG_IFACE); | |
a94434b6 | 926 | |
d62a17ae | 927 | return ri; |
718e3744 | 928 | } |
929 | ||
dde7b15b RW |
930 | void ripng_interface_sync(struct interface *ifp) |
931 | { | |
932 | struct vrf *vrf; | |
933 | ||
a36898e7 | 934 | vrf = vrf_lookup_by_id(ifp->vrf_id); |
dde7b15b RW |
935 | if (vrf) { |
936 | struct ripng_interface *ri; | |
937 | ||
938 | ri = ifp->info; | |
939 | if (ri) | |
940 | ri->ripng = vrf->info; | |
941 | } | |
942 | } | |
943 | ||
d62a17ae | 944 | static int ripng_if_new_hook(struct interface *ifp) |
718e3744 | 945 | { |
d62a17ae | 946 | ifp->info = ri_new(); |
dde7b15b RW |
947 | ripng_interface_sync(ifp); |
948 | ||
d62a17ae | 949 | return 0; |
718e3744 | 950 | } |
951 | ||
a94434b6 | 952 | /* Called when interface structure deleted. */ |
d62a17ae | 953 | static int ripng_if_delete_hook(struct interface *ifp) |
a94434b6 | 954 | { |
eaf58ba9 | 955 | XFREE(MTYPE_RIPNG_IF, ifp->info); |
d62a17ae | 956 | ifp->info = NULL; |
957 | return 0; | |
a94434b6 | 958 | } |
959 | ||
718e3744 | 960 | /* Configuration write function for ripngd. */ |
d62a17ae | 961 | static int interface_config_write(struct vty *vty) |
718e3744 | 962 | { |
dde7b15b | 963 | struct vrf *vrf; |
d62a17ae | 964 | int write = 0; |
965 | ||
dde7b15b RW |
966 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { |
967 | struct interface *ifp; | |
d62a17ae | 968 | |
dde7b15b RW |
969 | FOR_ALL_INTERFACES (vrf, ifp) { |
970 | struct lyd_node *dnode; | |
d62a17ae | 971 | |
dde7b15b RW |
972 | dnode = yang_dnode_get( |
973 | running_config->dnode, | |
974 | "/frr-interface:lib/interface[name='%s'][vrf='%s']", | |
975 | ifp->name, vrf->name); | |
976 | if (dnode == NULL) | |
977 | continue; | |
d62a17ae | 978 | |
dde7b15b RW |
979 | write = 1; |
980 | nb_cli_show_dnode_cmds(vty, dnode, false); | |
981 | } | |
a94434b6 | 982 | } |
d406db4c | 983 | |
d62a17ae | 984 | return write; |
718e3744 | 985 | } |
986 | ||
987 | /* ripngd's interface node. */ | |
d62a17ae | 988 | static struct cmd_node interface_node = { |
989 | INTERFACE_NODE, "%s(config-if)# ", 1 /* VTYSH */ | |
718e3744 | 990 | }; |
991 | ||
992 | /* Initialization of interface. */ | |
4d762f26 | 993 | void ripng_if_init(void) |
718e3744 | 994 | { |
d62a17ae | 995 | /* Interface initialize. */ |
ce19a04a DL |
996 | hook_register_prio(if_add, 0, ripng_if_new_hook); |
997 | hook_register_prio(if_del, 0, ripng_if_delete_hook); | |
718e3744 | 998 | |
d62a17ae | 999 | /* Install interface node. */ |
1000 | install_node(&interface_node, interface_config_write); | |
1001 | if_cmd_init(); | |
718e3744 | 1002 | } |