]>
Commit | Line | Data |
---|---|---|
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 | { |
d62a17ae | 201 | if (IS_RIPNG_DEBUG_ZEBRA) |
202 | zlog_debug( | |
dde7b15b | 203 | "interface up %s vrf %u index %d flags %llx metric %d mtu %d", |
a36898e7 | 204 | ifp->name, ifp->vrf_id, ifp->ifindex, |
dde7b15b RW |
205 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
206 | ||
207 | ripng_interface_sync(ifp); | |
718e3744 | 208 | |
d62a17ae | 209 | /* Check if this interface is RIPng enabled or not. */ |
210 | ripng_enable_apply(ifp); | |
718e3744 | 211 | |
d62a17ae | 212 | /* Check for a passive interface. */ |
213 | ripng_passive_interface_apply(ifp); | |
718e3744 | 214 | |
d62a17ae | 215 | /* Apply distribute list to the all interface. */ |
216 | ripng_distribute_update_interface(ifp); | |
718e3744 | 217 | |
d62a17ae | 218 | return 0; |
718e3744 | 219 | } |
220 | ||
221 | /* Inteface link down message processing. */ | |
b0b69e59 | 222 | static int ripng_ifp_down(struct interface *ifp) |
718e3744 | 223 | { |
dde7b15b | 224 | ripng_interface_sync(ifp); |
d62a17ae | 225 | ripng_if_down(ifp); |
718e3744 | 226 | |
d62a17ae | 227 | if (IS_RIPNG_DEBUG_ZEBRA) |
228 | zlog_debug( | |
dde7b15b | 229 | "interface down %s vrf %u index %d flags %#llx metric %d mtu %d", |
a36898e7 | 230 | ifp->name, ifp->vrf_id, ifp->ifindex, |
dde7b15b | 231 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
718e3744 | 232 | |
d62a17ae | 233 | return 0; |
718e3744 | 234 | } |
235 | ||
236 | /* Inteface addition message from zebra. */ | |
ef7bd2a3 | 237 | static int ripng_ifp_create(struct interface *ifp) |
718e3744 | 238 | { |
dde7b15b | 239 | ripng_interface_sync(ifp); |
718e3744 | 240 | |
d62a17ae | 241 | if (IS_RIPNG_DEBUG_ZEBRA) |
242 | zlog_debug( | |
dde7b15b | 243 | "RIPng interface add %s vrf %u index %d flags %#llx metric %d mtu %d", |
a36898e7 | 244 | ifp->name, ifp->vrf_id, ifp->ifindex, |
dde7b15b | 245 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
718e3744 | 246 | |
d62a17ae | 247 | /* Check is this interface is RIP enabled or not.*/ |
248 | ripng_enable_apply(ifp); | |
718e3744 | 249 | |
d62a17ae | 250 | /* Apply distribute list to the interface. */ |
251 | ripng_distribute_update_interface(ifp); | |
718e3744 | 252 | |
d62a17ae | 253 | /* Check interface routemap. */ |
254 | ripng_if_rmap_update_interface(ifp); | |
718e3744 | 255 | |
d62a17ae | 256 | return 0; |
718e3744 | 257 | } |
258 | ||
3c3c3252 | 259 | static int ripng_ifp_destroy(struct interface *ifp) |
718e3744 | 260 | { |
dde7b15b | 261 | ripng_interface_sync(ifp); |
d62a17ae | 262 | if (if_is_up(ifp)) { |
263 | ripng_if_down(ifp); | |
264 | } | |
a94434b6 | 265 | |
dde7b15b RW |
266 | zlog_info( |
267 | "interface delete %s vrf %u index %d flags %#llx metric %d mtu %d", | |
a36898e7 | 268 | ifp->name, ifp->vrf_id, ifp->ifindex, |
dde7b15b | 269 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
a94434b6 | 270 | |
d62a17ae | 271 | return 0; |
718e3744 | 272 | } |
273 | ||
dde7b15b | 274 | /* VRF update for an interface. */ |
121f9dee | 275 | int ripng_interface_vrf_update(ZAPI_CALLBACK_ARGS) |
dde7b15b RW |
276 | { |
277 | struct interface *ifp; | |
278 | vrf_id_t new_vrf_id; | |
279 | ||
280 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
281 | &new_vrf_id); | |
282 | if (!ifp) | |
283 | return 0; | |
284 | ||
285 | if (IS_RIPNG_DEBUG_ZEBRA) | |
286 | zlog_debug("interface %s VRF change vrf_id %u new vrf id %u", | |
287 | ifp->name, vrf_id, new_vrf_id); | |
288 | ||
a36898e7 | 289 | if_update_to_new_vrf(ifp, new_vrf_id); |
dde7b15b RW |
290 | ripng_interface_sync(ifp); |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
5c84b9a5 | 295 | void ripng_interface_clean(struct ripng *ripng) |
a94434b6 | 296 | { |
d62a17ae | 297 | struct interface *ifp; |
298 | struct ripng_interface *ri; | |
a94434b6 | 299 | |
dde7b15b | 300 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 301 | ri = ifp->info; |
a94434b6 | 302 | |
d62a17ae | 303 | ri->enable_network = 0; |
304 | ri->enable_interface = 0; | |
305 | ri->running = 0; | |
a94434b6 | 306 | |
d62a17ae | 307 | if (ri->t_wakeup) { |
308 | thread_cancel(ri->t_wakeup); | |
309 | ri->t_wakeup = NULL; | |
310 | } | |
311 | } | |
312 | } | |
a94434b6 | 313 | |
d62a17ae | 314 | static void ripng_apply_address_add(struct connected *ifc) |
315 | { | |
5c84b9a5 RW |
316 | struct ripng_interface *ri = ifc->ifp->info; |
317 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 318 | struct prefix_ipv6 address; |
319 | struct prefix *p; | |
320 | ||
321 | if (!ripng) | |
322 | return; | |
323 | ||
324 | if (!if_is_up(ifc->ifp)) | |
325 | return; | |
326 | ||
327 | p = ifc->address; | |
328 | ||
329 | memset(&address, 0, sizeof(address)); | |
330 | address.family = p->family; | |
331 | address.prefix = p->u.prefix6; | |
332 | address.prefixlen = p->prefixlen; | |
333 | apply_mask_ipv6(&address); | |
334 | ||
335 | /* Check if this interface is RIP enabled or not | |
336 | or Check if this address's prefix is RIP enabled */ | |
5c84b9a5 | 337 | if ((ripng_enable_if_lookup(ripng, ifc->ifp->name) >= 0) |
d62a17ae | 338 | || (ripng_enable_network_lookup2(ifc) >= 0)) |
5c84b9a5 | 339 | ripng_redistribute_add(ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 340 | RIPNG_ROUTE_INTERFACE, &address, |
341 | ifc->ifp->ifindex, NULL, 0); | |
a94434b6 | 342 | } |
343 | ||
121f9dee | 344 | int ripng_interface_address_add(ZAPI_CALLBACK_ARGS) |
718e3744 | 345 | { |
d62a17ae | 346 | struct connected *c; |
347 | struct prefix *p; | |
718e3744 | 348 | |
d62a17ae | 349 | c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, |
350 | zclient->ibuf, vrf_id); | |
718e3744 | 351 | |
d62a17ae | 352 | if (c == NULL) |
353 | return 0; | |
718e3744 | 354 | |
d62a17ae | 355 | p = c->address; |
718e3744 | 356 | |
d62a17ae | 357 | if (p->family == AF_INET6) { |
358 | struct ripng_interface *ri = c->ifp->info; | |
a94434b6 | 359 | |
d62a17ae | 360 | if (IS_RIPNG_DEBUG_ZEBRA) |
361 | zlog_debug("RIPng connected address %s/%d add", | |
362 | inet6_ntoa(p->u.prefix6), p->prefixlen); | |
a94434b6 | 363 | |
d62a17ae | 364 | /* Check is this prefix needs to be redistributed. */ |
365 | ripng_apply_address_add(c); | |
a94434b6 | 366 | |
d62a17ae | 367 | /* Let's try once again whether the interface could be activated |
368 | */ | |
369 | if (!ri->running) { | |
370 | /* Check if this interface is RIP enabled or not.*/ | |
371 | ripng_enable_apply(c->ifp); | |
a94434b6 | 372 | |
d62a17ae | 373 | /* Apply distribute list to the interface. */ |
374 | ripng_distribute_update_interface(c->ifp); | |
718e3744 | 375 | |
d62a17ae | 376 | /* Check interface routemap. */ |
377 | ripng_if_rmap_update_interface(c->ifp); | |
378 | } | |
379 | } | |
380 | ||
381 | return 0; | |
718e3744 | 382 | } |
383 | ||
d62a17ae | 384 | static void ripng_apply_address_del(struct connected *ifc) |
385 | { | |
5c84b9a5 RW |
386 | struct ripng_interface *ri = ifc->ifp->info; |
387 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 388 | struct prefix_ipv6 address; |
389 | struct prefix *p; | |
a94434b6 | 390 | |
d62a17ae | 391 | if (!ripng) |
392 | return; | |
a94434b6 | 393 | |
d62a17ae | 394 | if (!if_is_up(ifc->ifp)) |
395 | return; | |
a94434b6 | 396 | |
d62a17ae | 397 | p = ifc->address; |
a94434b6 | 398 | |
d62a17ae | 399 | memset(&address, 0, sizeof(address)); |
400 | address.family = p->family; | |
401 | address.prefix = p->u.prefix6; | |
402 | address.prefixlen = p->prefixlen; | |
403 | apply_mask_ipv6(&address); | |
a94434b6 | 404 | |
5c84b9a5 RW |
405 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
406 | RIPNG_ROUTE_INTERFACE, &address, | |
407 | ifc->ifp->ifindex); | |
a94434b6 | 408 | } |
409 | ||
121f9dee | 410 | int ripng_interface_address_delete(ZAPI_CALLBACK_ARGS) |
718e3744 | 411 | { |
d62a17ae | 412 | struct connected *ifc; |
413 | struct prefix *p; | |
414 | char buf[INET6_ADDRSTRLEN]; | |
415 | ||
416 | ifc = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, | |
417 | zclient->ibuf, vrf_id); | |
418 | ||
419 | if (ifc) { | |
420 | p = ifc->address; | |
421 | ||
422 | if (p->family == AF_INET6) { | |
423 | if (IS_RIPNG_DEBUG_ZEBRA) | |
424 | zlog_debug( | |
425 | "RIPng connected address %s/%d delete", | |
426 | inet_ntop(AF_INET6, &p->u.prefix6, buf, | |
427 | INET6_ADDRSTRLEN), | |
428 | p->prefixlen); | |
429 | ||
430 | /* Check wether this prefix needs to be removed. */ | |
431 | ripng_apply_address_del(ifc); | |
432 | } | |
433 | connected_free(ifc); | |
718e3744 | 434 | } |
718e3744 | 435 | |
d62a17ae | 436 | return 0; |
718e3744 | 437 | } |
6b0655a2 | 438 | |
718e3744 | 439 | /* Lookup RIPng enable network. */ |
a94434b6 | 440 | /* Check wether the interface has at least a connected prefix that |
29b94d58 | 441 | * is within the ripng->enable_network table. */ |
d62a17ae | 442 | static int ripng_enable_network_lookup_if(struct interface *ifp) |
718e3744 | 443 | { |
5c84b9a5 RW |
444 | struct ripng_interface *ri = ifp->info; |
445 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 446 | struct listnode *node; |
447 | struct connected *connected; | |
448 | struct prefix_ipv6 address; | |
449 | ||
29b94d58 RW |
450 | if (!ripng) |
451 | return -1; | |
452 | ||
d62a17ae | 453 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { |
454 | struct prefix *p; | |
fe08ba7e | 455 | struct agg_node *n; |
d62a17ae | 456 | |
457 | p = connected->address; | |
458 | ||
459 | if (p->family == AF_INET6) { | |
460 | address.family = AF_INET6; | |
461 | address.prefix = p->u.prefix6; | |
462 | address.prefixlen = IPV6_MAX_BITLEN; | |
463 | ||
29b94d58 | 464 | n = agg_node_match(ripng->enable_network, |
fe08ba7e | 465 | (struct prefix *)&address); |
ee6f7757 | 466 | if (n) { |
fe08ba7e | 467 | agg_unlock_node(n); |
d62a17ae | 468 | return 1; |
469 | } | |
470 | } | |
471 | } | |
472 | return -1; | |
718e3744 | 473 | } |
474 | ||
29b94d58 | 475 | /* Check wether connected is within the ripng->enable_network table. */ |
d62a17ae | 476 | static int ripng_enable_network_lookup2(struct connected *connected) |
a94434b6 | 477 | { |
5c84b9a5 RW |
478 | struct ripng_interface *ri = connected->ifp->info; |
479 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 480 | struct prefix_ipv6 address; |
481 | struct prefix *p; | |
a94434b6 | 482 | |
29b94d58 RW |
483 | if (!ripng) |
484 | return -1; | |
485 | ||
d62a17ae | 486 | p = connected->address; |
a94434b6 | 487 | |
d62a17ae | 488 | if (p->family == AF_INET6) { |
fe08ba7e | 489 | struct agg_node *node; |
a94434b6 | 490 | |
d62a17ae | 491 | address.family = p->family; |
492 | address.prefix = p->u.prefix6; | |
493 | address.prefixlen = IPV6_MAX_BITLEN; | |
a94434b6 | 494 | |
d62a17ae | 495 | /* LPM on p->family, p->u.prefix6/IPV6_MAX_BITLEN within |
29b94d58 RW |
496 | * ripng->enable_network */ |
497 | node = agg_node_match(ripng->enable_network, | |
fe08ba7e | 498 | (struct prefix *)&address); |
a94434b6 | 499 | |
d62a17ae | 500 | if (node) { |
fe08ba7e | 501 | agg_unlock_node(node); |
d62a17ae | 502 | return 1; |
503 | } | |
504 | } | |
a94434b6 | 505 | |
d62a17ae | 506 | return -1; |
a94434b6 | 507 | } |
508 | ||
718e3744 | 509 | /* Add RIPng enable network. */ |
5c84b9a5 | 510 | int ripng_enable_network_add(struct ripng *ripng, struct prefix *p) |
718e3744 | 511 | { |
fe08ba7e | 512 | struct agg_node *node; |
718e3744 | 513 | |
29b94d58 | 514 | node = agg_node_get(ripng->enable_network, p); |
718e3744 | 515 | |
d62a17ae | 516 | if (node->info) { |
fe08ba7e | 517 | agg_unlock_node(node); |
cc48702b | 518 | return NB_ERR_INCONSISTENCY; |
d62a17ae | 519 | } else |
520 | node->info = (void *)1; | |
718e3744 | 521 | |
d62a17ae | 522 | /* XXX: One should find a better solution than a generic one */ |
5c84b9a5 | 523 | ripng_enable_apply_all(ripng); |
a94434b6 | 524 | |
cc48702b | 525 | return NB_OK; |
718e3744 | 526 | } |
527 | ||
528 | /* Delete RIPng enable network. */ | |
5c84b9a5 | 529 | int ripng_enable_network_delete(struct ripng *ripng, struct prefix *p) |
718e3744 | 530 | { |
fe08ba7e | 531 | struct agg_node *node; |
718e3744 | 532 | |
29b94d58 | 533 | node = agg_node_lookup(ripng->enable_network, p); |
d62a17ae | 534 | if (node) { |
535 | node->info = NULL; | |
718e3744 | 536 | |
d62a17ae | 537 | /* Unlock info lock. */ |
fe08ba7e | 538 | agg_unlock_node(node); |
718e3744 | 539 | |
d62a17ae | 540 | /* Unlock lookup lock. */ |
fe08ba7e | 541 | agg_unlock_node(node); |
718e3744 | 542 | |
cc48702b | 543 | return NB_OK; |
d62a17ae | 544 | } |
cc48702b RW |
545 | |
546 | return NB_ERR_INCONSISTENCY; | |
718e3744 | 547 | } |
548 | ||
549 | /* Lookup function. */ | |
5c84b9a5 | 550 | static int ripng_enable_if_lookup(struct ripng *ripng, const char *ifname) |
718e3744 | 551 | { |
d62a17ae | 552 | unsigned int i; |
553 | char *str; | |
554 | ||
b0ba762f RW |
555 | if (!ripng) |
556 | return -1; | |
557 | ||
558 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
559 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) | |
d62a17ae | 560 | if (strcmp(str, ifname) == 0) |
561 | return i; | |
562 | return -1; | |
718e3744 | 563 | } |
564 | ||
5c84b9a5 | 565 | int ripng_enable_if_add(struct ripng *ripng, const char *ifname) |
718e3744 | 566 | { |
d62a17ae | 567 | int ret; |
718e3744 | 568 | |
5c84b9a5 | 569 | ret = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 570 | if (ret >= 0) |
cc48702b | 571 | return NB_ERR_INCONSISTENCY; |
718e3744 | 572 | |
b0ba762f | 573 | vector_set(ripng->enable_if, strdup(ifname)); |
718e3744 | 574 | |
5c84b9a5 | 575 | ripng_enable_apply_all(ripng); |
a94434b6 | 576 | |
cc48702b | 577 | return NB_OK; |
718e3744 | 578 | } |
579 | ||
5c84b9a5 | 580 | int ripng_enable_if_delete(struct ripng *ripng, const char *ifname) |
718e3744 | 581 | { |
d62a17ae | 582 | int index; |
583 | char *str; | |
718e3744 | 584 | |
5c84b9a5 | 585 | index = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 586 | if (index < 0) |
cc48702b | 587 | return NB_ERR_INCONSISTENCY; |
718e3744 | 588 | |
b0ba762f | 589 | str = vector_slot(ripng->enable_if, index); |
d62a17ae | 590 | free(str); |
b0ba762f | 591 | vector_unset(ripng->enable_if, index); |
718e3744 | 592 | |
5c84b9a5 | 593 | ripng_enable_apply_all(ripng); |
a94434b6 | 594 | |
cc48702b | 595 | return NB_OK; |
718e3744 | 596 | } |
597 | ||
598 | /* Wake up interface. */ | |
d62a17ae | 599 | static int ripng_interface_wakeup(struct thread *t) |
718e3744 | 600 | { |
d62a17ae | 601 | struct interface *ifp; |
602 | struct ripng_interface *ri; | |
718e3744 | 603 | |
d62a17ae | 604 | /* Get interface. */ |
605 | ifp = THREAD_ARG(t); | |
718e3744 | 606 | |
d62a17ae | 607 | ri = ifp->info; |
608 | ri->t_wakeup = NULL; | |
718e3744 | 609 | |
d62a17ae | 610 | /* Join to multicast group. */ |
5c84b9a5 | 611 | if (ripng_multicast_join(ifp, ri->ripng->sock) < 0) { |
450971aa | 612 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
613 | "multicast join failed, interface %s not running", |
614 | ifp->name); | |
d62a17ae | 615 | return 0; |
616 | } | |
617 | ||
618 | /* Set running flag. */ | |
619 | ri->running = 1; | |
718e3744 | 620 | |
d62a17ae | 621 | /* Send RIP request to the interface. */ |
622 | ripng_request(ifp); | |
718e3744 | 623 | |
d62a17ae | 624 | return 0; |
718e3744 | 625 | } |
626 | ||
d62a17ae | 627 | static void ripng_connect_set(struct interface *ifp, int set) |
a94434b6 | 628 | { |
5c84b9a5 RW |
629 | struct ripng_interface *ri = ifp->info; |
630 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 631 | struct listnode *node, *nnode; |
632 | struct connected *connected; | |
633 | struct prefix_ipv6 address; | |
634 | ||
635 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, connected)) { | |
636 | struct prefix *p; | |
637 | p = connected->address; | |
638 | ||
639 | if (p->family != AF_INET6) | |
640 | continue; | |
641 | ||
642 | address.family = AF_INET6; | |
643 | address.prefix = p->u.prefix6; | |
644 | address.prefixlen = p->prefixlen; | |
645 | apply_mask_ipv6(&address); | |
646 | ||
647 | if (set) { | |
648 | /* Check once more wether this prefix is within a | |
649 | * "network IF_OR_PREF" one */ | |
5c84b9a5 RW |
650 | if ((ripng_enable_if_lookup(ripng, connected->ifp->name) |
651 | >= 0) | |
d62a17ae | 652 | || (ripng_enable_network_lookup2(connected) >= 0)) |
653 | ripng_redistribute_add( | |
5c84b9a5 | 654 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 655 | RIPNG_ROUTE_INTERFACE, &address, |
656 | connected->ifp->ifindex, NULL, 0); | |
657 | } else { | |
5c84b9a5 RW |
658 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
659 | RIPNG_ROUTE_INTERFACE, | |
660 | &address, | |
661 | connected->ifp->ifindex); | |
662 | if (ripng_redistribute_check(ripng, | |
663 | ZEBRA_ROUTE_CONNECT)) | |
d62a17ae | 664 | ripng_redistribute_add( |
5c84b9a5 | 665 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 666 | RIPNG_ROUTE_REDISTRIBUTE, &address, |
667 | connected->ifp->ifindex, NULL, 0); | |
668 | } | |
669 | } | |
a94434b6 | 670 | } |
671 | ||
718e3744 | 672 | /* Check RIPng is enabed on this interface. */ |
d62a17ae | 673 | void ripng_enable_apply(struct interface *ifp) |
718e3744 | 674 | { |
d62a17ae | 675 | int ret; |
676 | struct ripng_interface *ri = NULL; | |
677 | ||
678 | /* Check interface. */ | |
679 | if (!if_is_up(ifp)) | |
680 | return; | |
681 | ||
682 | ri = ifp->info; | |
683 | ||
684 | /* Is this interface a candidate for RIPng ? */ | |
685 | ret = ripng_enable_network_lookup_if(ifp); | |
686 | ||
687 | /* If the interface is matched. */ | |
688 | if (ret > 0) | |
689 | ri->enable_network = 1; | |
690 | else | |
691 | ri->enable_network = 0; | |
692 | ||
693 | /* Check interface name configuration. */ | |
5c84b9a5 | 694 | ret = ripng_enable_if_lookup(ri->ripng, ifp->name); |
d62a17ae | 695 | if (ret >= 0) |
696 | ri->enable_interface = 1; | |
697 | else | |
698 | ri->enable_interface = 0; | |
699 | ||
700 | /* any candidate interface MUST have a link-local IPv6 address */ | |
701 | if ((!ripng_if_ipv6_lladdress_check(ifp)) | |
702 | && (ri->enable_network || ri->enable_interface)) { | |
703 | ri->enable_network = 0; | |
704 | ri->enable_interface = 0; | |
705 | zlog_warn("Interface %s does not have any link-local address", | |
706 | ifp->name); | |
707 | } | |
708 | ||
709 | /* Update running status of the interface. */ | |
710 | if (ri->enable_network || ri->enable_interface) { | |
711 | zlog_info("RIPng INTERFACE ON %s", ifp->name); | |
712 | ||
713 | /* Add interface wake up thread. */ | |
714 | thread_add_timer(master, ripng_interface_wakeup, ifp, 1, | |
715 | &ri->t_wakeup); | |
716 | ||
717 | ripng_connect_set(ifp, 1); | |
718 | } else { | |
719 | if (ri->running) { | |
720 | /* Might as well clean up the route table as well | |
721 | * ripng_if_down sets to 0 ri->running, and displays | |
722 | *"turn off %s" | |
723 | **/ | |
724 | ripng_if_down(ifp); | |
725 | ||
726 | ripng_connect_set(ifp, 0); | |
727 | } | |
718e3744 | 728 | } |
718e3744 | 729 | } |
730 | ||
731 | /* Set distribute list to all interfaces. */ | |
5c84b9a5 | 732 | static void ripng_enable_apply_all(struct ripng *ripng) |
718e3744 | 733 | { |
d62a17ae | 734 | struct interface *ifp; |
718e3744 | 735 | |
dde7b15b | 736 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 737 | ripng_enable_apply(ifp); |
718e3744 | 738 | } |
6b0655a2 | 739 | |
a94434b6 | 740 | /* Clear all network and neighbor configuration */ |
5c84b9a5 | 741 | void ripng_clean_network(struct ripng *ripng) |
a94434b6 | 742 | { |
d62a17ae | 743 | unsigned int i; |
744 | char *str; | |
fe08ba7e | 745 | struct agg_node *rn; |
d62a17ae | 746 | |
29b94d58 RW |
747 | /* ripng->enable_network */ |
748 | for (rn = agg_route_top(ripng->enable_network); rn; | |
fe08ba7e | 749 | rn = agg_route_next(rn)) |
d62a17ae | 750 | if (rn->info) { |
751 | rn->info = NULL; | |
fe08ba7e | 752 | agg_unlock_node(rn); |
d62a17ae | 753 | } |
754 | ||
b0ba762f RW |
755 | /* ripng->enable_if */ |
756 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
757 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) { | |
d62a17ae | 758 | free(str); |
b0ba762f | 759 | vector_slot(ripng->enable_if, i) = NULL; |
d62a17ae | 760 | } |
a94434b6 | 761 | } |
6b0655a2 | 762 | |
718e3744 | 763 | /* Utility function for looking up passive interface settings. */ |
5c84b9a5 RW |
764 | static int ripng_passive_interface_lookup(struct ripng *ripng, |
765 | const char *ifname) | |
718e3744 | 766 | { |
d62a17ae | 767 | unsigned int i; |
768 | char *str; | |
769 | ||
0c32404f RW |
770 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
771 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) | |
d62a17ae | 772 | if (strcmp(str, ifname) == 0) |
773 | return i; | |
774 | return -1; | |
718e3744 | 775 | } |
776 | ||
d62a17ae | 777 | void ripng_passive_interface_apply(struct interface *ifp) |
718e3744 | 778 | { |
d62a17ae | 779 | int ret; |
780 | struct ripng_interface *ri; | |
5c84b9a5 | 781 | struct ripng *ripng; |
718e3744 | 782 | |
d62a17ae | 783 | ri = ifp->info; |
5c84b9a5 RW |
784 | ripng = ri->ripng; |
785 | if (!ripng) | |
786 | return; | |
718e3744 | 787 | |
5c84b9a5 | 788 | ret = ripng_passive_interface_lookup(ripng, ifp->name); |
d62a17ae | 789 | if (ret < 0) |
790 | ri->passive = 0; | |
791 | else | |
792 | ri->passive = 1; | |
718e3744 | 793 | } |
794 | ||
5c84b9a5 | 795 | static void ripng_passive_interface_apply_all(struct ripng *ripng) |
718e3744 | 796 | { |
d62a17ae | 797 | struct interface *ifp; |
718e3744 | 798 | |
dde7b15b | 799 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 800 | ripng_passive_interface_apply(ifp); |
718e3744 | 801 | } |
802 | ||
803 | /* Passive interface. */ | |
5c84b9a5 | 804 | int ripng_passive_interface_set(struct ripng *ripng, const char *ifname) |
718e3744 | 805 | { |
5c84b9a5 | 806 | if (ripng_passive_interface_lookup(ripng, ifname) >= 0) |
22e8c7ae | 807 | return NB_ERR_INCONSISTENCY; |
718e3744 | 808 | |
0c32404f | 809 | vector_set(ripng->passive_interface, strdup(ifname)); |
718e3744 | 810 | |
5c84b9a5 | 811 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 812 | |
22e8c7ae | 813 | return NB_OK; |
718e3744 | 814 | } |
815 | ||
5c84b9a5 | 816 | int ripng_passive_interface_unset(struct ripng *ripng, const char *ifname) |
718e3744 | 817 | { |
d62a17ae | 818 | int i; |
819 | char *str; | |
718e3744 | 820 | |
5c84b9a5 | 821 | i = ripng_passive_interface_lookup(ripng, ifname); |
d62a17ae | 822 | if (i < 0) |
22e8c7ae | 823 | return NB_ERR_INCONSISTENCY; |
718e3744 | 824 | |
0c32404f | 825 | str = vector_slot(ripng->passive_interface, i); |
d62a17ae | 826 | free(str); |
0c32404f | 827 | vector_unset(ripng->passive_interface, i); |
718e3744 | 828 | |
5c84b9a5 | 829 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 830 | |
22e8c7ae | 831 | return NB_OK; |
718e3744 | 832 | } |
833 | ||
834 | /* Free all configured RIP passive-interface settings. */ | |
5c84b9a5 | 835 | void ripng_passive_interface_clean(struct ripng *ripng) |
718e3744 | 836 | { |
d62a17ae | 837 | unsigned int i; |
838 | char *str; | |
839 | ||
0c32404f RW |
840 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
841 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) { | |
d62a17ae | 842 | free(str); |
0c32404f | 843 | vector_slot(ripng->passive_interface, i) = NULL; |
d62a17ae | 844 | } |
5c84b9a5 | 845 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 846 | } |
847 | ||
848 | /* Write RIPng enable network and interface to the vty. */ | |
5c84b9a5 | 849 | int ripng_network_write(struct vty *vty, struct ripng *ripng) |
718e3744 | 850 | { |
d62a17ae | 851 | unsigned int i; |
852 | const char *ifname; | |
fe08ba7e | 853 | struct agg_node *node; |
d62a17ae | 854 | char buf[BUFSIZ]; |
855 | ||
856 | /* Write enable network. */ | |
29b94d58 | 857 | for (node = agg_route_top(ripng->enable_network); node; |
fe08ba7e | 858 | node = agg_route_next(node)) |
d62a17ae | 859 | if (node->info) { |
860 | struct prefix *p = &node->p; | |
22e8c7ae | 861 | vty_out(vty, " %s/%d\n", |
d62a17ae | 862 | inet_ntop(p->family, &p->u.prefix, buf, BUFSIZ), |
863 | p->prefixlen); | |
864 | } | |
865 | ||
866 | /* Write enable interface. */ | |
b0ba762f RW |
867 | for (i = 0; i < vector_active(ripng->enable_if); i++) |
868 | if ((ifname = vector_slot(ripng->enable_if, i)) != NULL) | |
22e8c7ae | 869 | vty_out(vty, " %s\n", ifname); |
d62a17ae | 870 | |
871 | return 0; | |
718e3744 | 872 | } |
873 | ||
d62a17ae | 874 | static struct ripng_interface *ri_new(void) |
718e3744 | 875 | { |
d62a17ae | 876 | struct ripng_interface *ri; |
5c84b9a5 | 877 | |
eaf58ba9 | 878 | ri = XCALLOC(MTYPE_RIPNG_IF, sizeof(struct ripng_interface)); |
a94434b6 | 879 | |
d62a17ae | 880 | /* Set default split-horizon behavior. If the interface is Frame |
881 | Relay or SMDS is enabled, the default value for split-horizon is | |
882 | off. But currently Zebra does detect Frame Relay or SMDS | |
883 | interface. So all interface is set to split horizon. */ | |
d406db4c RW |
884 | ri->split_horizon = |
885 | yang_get_default_enum("%s/split-horizon", RIPNG_IFACE); | |
a94434b6 | 886 | |
d62a17ae | 887 | return ri; |
718e3744 | 888 | } |
889 | ||
dde7b15b RW |
890 | void ripng_interface_sync(struct interface *ifp) |
891 | { | |
892 | struct vrf *vrf; | |
893 | ||
a36898e7 | 894 | vrf = vrf_lookup_by_id(ifp->vrf_id); |
dde7b15b RW |
895 | if (vrf) { |
896 | struct ripng_interface *ri; | |
897 | ||
898 | ri = ifp->info; | |
899 | if (ri) | |
900 | ri->ripng = vrf->info; | |
901 | } | |
902 | } | |
903 | ||
d62a17ae | 904 | static int ripng_if_new_hook(struct interface *ifp) |
718e3744 | 905 | { |
d62a17ae | 906 | ifp->info = ri_new(); |
dde7b15b RW |
907 | ripng_interface_sync(ifp); |
908 | ||
d62a17ae | 909 | return 0; |
718e3744 | 910 | } |
911 | ||
a94434b6 | 912 | /* Called when interface structure deleted. */ |
d62a17ae | 913 | static int ripng_if_delete_hook(struct interface *ifp) |
a94434b6 | 914 | { |
eaf58ba9 | 915 | XFREE(MTYPE_RIPNG_IF, ifp->info); |
d62a17ae | 916 | ifp->info = NULL; |
917 | return 0; | |
a94434b6 | 918 | } |
919 | ||
718e3744 | 920 | /* Configuration write function for ripngd. */ |
d62a17ae | 921 | static int interface_config_write(struct vty *vty) |
718e3744 | 922 | { |
dde7b15b | 923 | struct vrf *vrf; |
d62a17ae | 924 | int write = 0; |
925 | ||
dde7b15b RW |
926 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { |
927 | struct interface *ifp; | |
d62a17ae | 928 | |
dde7b15b RW |
929 | FOR_ALL_INTERFACES (vrf, ifp) { |
930 | struct lyd_node *dnode; | |
d62a17ae | 931 | |
dde7b15b RW |
932 | dnode = yang_dnode_get( |
933 | running_config->dnode, | |
934 | "/frr-interface:lib/interface[name='%s'][vrf='%s']", | |
935 | ifp->name, vrf->name); | |
936 | if (dnode == NULL) | |
937 | continue; | |
d62a17ae | 938 | |
dde7b15b RW |
939 | write = 1; |
940 | nb_cli_show_dnode_cmds(vty, dnode, false); | |
941 | } | |
a94434b6 | 942 | } |
d406db4c | 943 | |
d62a17ae | 944 | return write; |
718e3744 | 945 | } |
946 | ||
947 | /* ripngd's interface node. */ | |
d62a17ae | 948 | static struct cmd_node interface_node = { |
949 | INTERFACE_NODE, "%s(config-if)# ", 1 /* VTYSH */ | |
718e3744 | 950 | }; |
951 | ||
952 | /* Initialization of interface. */ | |
4d762f26 | 953 | void ripng_if_init(void) |
718e3744 | 954 | { |
d62a17ae | 955 | /* Interface initialize. */ |
ce19a04a DL |
956 | hook_register_prio(if_add, 0, ripng_if_new_hook); |
957 | hook_register_prio(if_del, 0, ripng_if_delete_hook); | |
718e3744 | 958 | |
d62a17ae | 959 | /* Install interface node. */ |
960 | install_node(&interface_node, interface_config_write); | |
961 | if_cmd_init(); | |
138c5a74 DS |
962 | if_zapi_callbacks(ripng_ifp_create, ripng_ifp_up, |
963 | ripng_ifp_down, ripng_ifp_destroy); | |
718e3744 | 964 | } |