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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. */ | |
ef7bd2a3 | 259 | static int ripng_ifp_create(struct interface *ifp) |
718e3744 | 260 | { |
dde7b15b | 261 | ripng_interface_sync(ifp); |
718e3744 | 262 | |
d62a17ae | 263 | if (IS_RIPNG_DEBUG_ZEBRA) |
264 | zlog_debug( | |
dde7b15b | 265 | "RIPng interface add %s vrf %u index %d flags %#llx metric %d mtu %d", |
a36898e7 | 266 | ifp->name, ifp->vrf_id, ifp->ifindex, |
dde7b15b | 267 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
718e3744 | 268 | |
d62a17ae | 269 | /* Check is this interface is RIP enabled or not.*/ |
270 | ripng_enable_apply(ifp); | |
718e3744 | 271 | |
d62a17ae | 272 | /* Apply distribute list to the interface. */ |
273 | ripng_distribute_update_interface(ifp); | |
718e3744 | 274 | |
d62a17ae | 275 | /* Check interface routemap. */ |
276 | ripng_if_rmap_update_interface(ifp); | |
718e3744 | 277 | |
d62a17ae | 278 | return 0; |
718e3744 | 279 | } |
280 | ||
121f9dee | 281 | int ripng_interface_delete(ZAPI_CALLBACK_ARGS) |
718e3744 | 282 | { |
d62a17ae | 283 | struct interface *ifp; |
284 | struct stream *s; | |
a94434b6 | 285 | |
d62a17ae | 286 | s = zclient->ibuf; |
287 | /* zebra_interface_state_read() updates interface structure in iflist | |
288 | */ | |
289 | ifp = zebra_interface_state_read(s, vrf_id); | |
a94434b6 | 290 | |
d62a17ae | 291 | if (ifp == NULL) |
292 | return 0; | |
a94434b6 | 293 | |
dde7b15b | 294 | ripng_interface_sync(ifp); |
d62a17ae | 295 | if (if_is_up(ifp)) { |
296 | ripng_if_down(ifp); | |
297 | } | |
a94434b6 | 298 | |
dde7b15b RW |
299 | zlog_info( |
300 | "interface delete %s vrf %u index %d flags %#llx metric %d mtu %d", | |
a36898e7 | 301 | ifp->name, ifp->vrf_id, ifp->ifindex, |
dde7b15b | 302 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu6); |
a94434b6 | 303 | |
d62a17ae | 304 | /* To support pseudo interface do not free interface structure. */ |
305 | /* if_delete(ifp); */ | |
ff880b78 | 306 | if_set_index(ifp, IFINDEX_INTERNAL); |
a94434b6 | 307 | |
d62a17ae | 308 | return 0; |
718e3744 | 309 | } |
310 | ||
dde7b15b | 311 | /* VRF update for an interface. */ |
121f9dee | 312 | int ripng_interface_vrf_update(ZAPI_CALLBACK_ARGS) |
dde7b15b RW |
313 | { |
314 | struct interface *ifp; | |
315 | vrf_id_t new_vrf_id; | |
316 | ||
317 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
318 | &new_vrf_id); | |
319 | if (!ifp) | |
320 | return 0; | |
321 | ||
322 | if (IS_RIPNG_DEBUG_ZEBRA) | |
323 | zlog_debug("interface %s VRF change vrf_id %u new vrf id %u", | |
324 | ifp->name, vrf_id, new_vrf_id); | |
325 | ||
a36898e7 | 326 | if_update_to_new_vrf(ifp, new_vrf_id); |
dde7b15b RW |
327 | ripng_interface_sync(ifp); |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
5c84b9a5 | 332 | void ripng_interface_clean(struct ripng *ripng) |
a94434b6 | 333 | { |
d62a17ae | 334 | struct interface *ifp; |
335 | struct ripng_interface *ri; | |
a94434b6 | 336 | |
dde7b15b | 337 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 338 | ri = ifp->info; |
a94434b6 | 339 | |
d62a17ae | 340 | ri->enable_network = 0; |
341 | ri->enable_interface = 0; | |
342 | ri->running = 0; | |
a94434b6 | 343 | |
d62a17ae | 344 | if (ri->t_wakeup) { |
345 | thread_cancel(ri->t_wakeup); | |
346 | ri->t_wakeup = NULL; | |
347 | } | |
348 | } | |
349 | } | |
a94434b6 | 350 | |
d62a17ae | 351 | static void ripng_apply_address_add(struct connected *ifc) |
352 | { | |
5c84b9a5 RW |
353 | struct ripng_interface *ri = ifc->ifp->info; |
354 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 355 | struct prefix_ipv6 address; |
356 | struct prefix *p; | |
357 | ||
358 | if (!ripng) | |
359 | return; | |
360 | ||
361 | if (!if_is_up(ifc->ifp)) | |
362 | return; | |
363 | ||
364 | p = ifc->address; | |
365 | ||
366 | memset(&address, 0, sizeof(address)); | |
367 | address.family = p->family; | |
368 | address.prefix = p->u.prefix6; | |
369 | address.prefixlen = p->prefixlen; | |
370 | apply_mask_ipv6(&address); | |
371 | ||
372 | /* Check if this interface is RIP enabled or not | |
373 | or Check if this address's prefix is RIP enabled */ | |
5c84b9a5 | 374 | if ((ripng_enable_if_lookup(ripng, ifc->ifp->name) >= 0) |
d62a17ae | 375 | || (ripng_enable_network_lookup2(ifc) >= 0)) |
5c84b9a5 | 376 | ripng_redistribute_add(ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 377 | RIPNG_ROUTE_INTERFACE, &address, |
378 | ifc->ifp->ifindex, NULL, 0); | |
a94434b6 | 379 | } |
380 | ||
121f9dee | 381 | int ripng_interface_address_add(ZAPI_CALLBACK_ARGS) |
718e3744 | 382 | { |
d62a17ae | 383 | struct connected *c; |
384 | struct prefix *p; | |
718e3744 | 385 | |
d62a17ae | 386 | c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, |
387 | zclient->ibuf, vrf_id); | |
718e3744 | 388 | |
d62a17ae | 389 | if (c == NULL) |
390 | return 0; | |
718e3744 | 391 | |
d62a17ae | 392 | p = c->address; |
718e3744 | 393 | |
d62a17ae | 394 | if (p->family == AF_INET6) { |
395 | struct ripng_interface *ri = c->ifp->info; | |
a94434b6 | 396 | |
d62a17ae | 397 | if (IS_RIPNG_DEBUG_ZEBRA) |
398 | zlog_debug("RIPng connected address %s/%d add", | |
399 | inet6_ntoa(p->u.prefix6), p->prefixlen); | |
a94434b6 | 400 | |
d62a17ae | 401 | /* Check is this prefix needs to be redistributed. */ |
402 | ripng_apply_address_add(c); | |
a94434b6 | 403 | |
d62a17ae | 404 | /* Let's try once again whether the interface could be activated |
405 | */ | |
406 | if (!ri->running) { | |
407 | /* Check if this interface is RIP enabled or not.*/ | |
408 | ripng_enable_apply(c->ifp); | |
a94434b6 | 409 | |
d62a17ae | 410 | /* Apply distribute list to the interface. */ |
411 | ripng_distribute_update_interface(c->ifp); | |
718e3744 | 412 | |
d62a17ae | 413 | /* Check interface routemap. */ |
414 | ripng_if_rmap_update_interface(c->ifp); | |
415 | } | |
416 | } | |
417 | ||
418 | return 0; | |
718e3744 | 419 | } |
420 | ||
d62a17ae | 421 | static void ripng_apply_address_del(struct connected *ifc) |
422 | { | |
5c84b9a5 RW |
423 | struct ripng_interface *ri = ifc->ifp->info; |
424 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 425 | struct prefix_ipv6 address; |
426 | struct prefix *p; | |
a94434b6 | 427 | |
d62a17ae | 428 | if (!ripng) |
429 | return; | |
a94434b6 | 430 | |
d62a17ae | 431 | if (!if_is_up(ifc->ifp)) |
432 | return; | |
a94434b6 | 433 | |
d62a17ae | 434 | p = ifc->address; |
a94434b6 | 435 | |
d62a17ae | 436 | memset(&address, 0, sizeof(address)); |
437 | address.family = p->family; | |
438 | address.prefix = p->u.prefix6; | |
439 | address.prefixlen = p->prefixlen; | |
440 | apply_mask_ipv6(&address); | |
a94434b6 | 441 | |
5c84b9a5 RW |
442 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
443 | RIPNG_ROUTE_INTERFACE, &address, | |
444 | ifc->ifp->ifindex); | |
a94434b6 | 445 | } |
446 | ||
121f9dee | 447 | int ripng_interface_address_delete(ZAPI_CALLBACK_ARGS) |
718e3744 | 448 | { |
d62a17ae | 449 | struct connected *ifc; |
450 | struct prefix *p; | |
451 | char buf[INET6_ADDRSTRLEN]; | |
452 | ||
453 | ifc = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, | |
454 | zclient->ibuf, vrf_id); | |
455 | ||
456 | if (ifc) { | |
457 | p = ifc->address; | |
458 | ||
459 | if (p->family == AF_INET6) { | |
460 | if (IS_RIPNG_DEBUG_ZEBRA) | |
461 | zlog_debug( | |
462 | "RIPng connected address %s/%d delete", | |
463 | inet_ntop(AF_INET6, &p->u.prefix6, buf, | |
464 | INET6_ADDRSTRLEN), | |
465 | p->prefixlen); | |
466 | ||
467 | /* Check wether this prefix needs to be removed. */ | |
468 | ripng_apply_address_del(ifc); | |
469 | } | |
470 | connected_free(ifc); | |
718e3744 | 471 | } |
718e3744 | 472 | |
d62a17ae | 473 | return 0; |
718e3744 | 474 | } |
6b0655a2 | 475 | |
718e3744 | 476 | /* Lookup RIPng enable network. */ |
a94434b6 | 477 | /* Check wether the interface has at least a connected prefix that |
29b94d58 | 478 | * is within the ripng->enable_network table. */ |
d62a17ae | 479 | static int ripng_enable_network_lookup_if(struct interface *ifp) |
718e3744 | 480 | { |
5c84b9a5 RW |
481 | struct ripng_interface *ri = ifp->info; |
482 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 483 | struct listnode *node; |
484 | struct connected *connected; | |
485 | struct prefix_ipv6 address; | |
486 | ||
29b94d58 RW |
487 | if (!ripng) |
488 | return -1; | |
489 | ||
d62a17ae | 490 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { |
491 | struct prefix *p; | |
fe08ba7e | 492 | struct agg_node *n; |
d62a17ae | 493 | |
494 | p = connected->address; | |
495 | ||
496 | if (p->family == AF_INET6) { | |
497 | address.family = AF_INET6; | |
498 | address.prefix = p->u.prefix6; | |
499 | address.prefixlen = IPV6_MAX_BITLEN; | |
500 | ||
29b94d58 | 501 | n = agg_node_match(ripng->enable_network, |
fe08ba7e | 502 | (struct prefix *)&address); |
ee6f7757 | 503 | if (n) { |
fe08ba7e | 504 | agg_unlock_node(n); |
d62a17ae | 505 | return 1; |
506 | } | |
507 | } | |
508 | } | |
509 | return -1; | |
718e3744 | 510 | } |
511 | ||
29b94d58 | 512 | /* Check wether connected is within the ripng->enable_network table. */ |
d62a17ae | 513 | static int ripng_enable_network_lookup2(struct connected *connected) |
a94434b6 | 514 | { |
5c84b9a5 RW |
515 | struct ripng_interface *ri = connected->ifp->info; |
516 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 517 | struct prefix_ipv6 address; |
518 | struct prefix *p; | |
a94434b6 | 519 | |
29b94d58 RW |
520 | if (!ripng) |
521 | return -1; | |
522 | ||
d62a17ae | 523 | p = connected->address; |
a94434b6 | 524 | |
d62a17ae | 525 | if (p->family == AF_INET6) { |
fe08ba7e | 526 | struct agg_node *node; |
a94434b6 | 527 | |
d62a17ae | 528 | address.family = p->family; |
529 | address.prefix = p->u.prefix6; | |
530 | address.prefixlen = IPV6_MAX_BITLEN; | |
a94434b6 | 531 | |
d62a17ae | 532 | /* LPM on p->family, p->u.prefix6/IPV6_MAX_BITLEN within |
29b94d58 RW |
533 | * ripng->enable_network */ |
534 | node = agg_node_match(ripng->enable_network, | |
fe08ba7e | 535 | (struct prefix *)&address); |
a94434b6 | 536 | |
d62a17ae | 537 | if (node) { |
fe08ba7e | 538 | agg_unlock_node(node); |
d62a17ae | 539 | return 1; |
540 | } | |
541 | } | |
a94434b6 | 542 | |
d62a17ae | 543 | return -1; |
a94434b6 | 544 | } |
545 | ||
718e3744 | 546 | /* Add RIPng enable network. */ |
5c84b9a5 | 547 | int ripng_enable_network_add(struct ripng *ripng, struct prefix *p) |
718e3744 | 548 | { |
fe08ba7e | 549 | struct agg_node *node; |
718e3744 | 550 | |
29b94d58 | 551 | node = agg_node_get(ripng->enable_network, p); |
718e3744 | 552 | |
d62a17ae | 553 | if (node->info) { |
fe08ba7e | 554 | agg_unlock_node(node); |
cc48702b | 555 | return NB_ERR_INCONSISTENCY; |
d62a17ae | 556 | } else |
557 | node->info = (void *)1; | |
718e3744 | 558 | |
d62a17ae | 559 | /* XXX: One should find a better solution than a generic one */ |
5c84b9a5 | 560 | ripng_enable_apply_all(ripng); |
a94434b6 | 561 | |
cc48702b | 562 | return NB_OK; |
718e3744 | 563 | } |
564 | ||
565 | /* Delete RIPng enable network. */ | |
5c84b9a5 | 566 | int ripng_enable_network_delete(struct ripng *ripng, struct prefix *p) |
718e3744 | 567 | { |
fe08ba7e | 568 | struct agg_node *node; |
718e3744 | 569 | |
29b94d58 | 570 | node = agg_node_lookup(ripng->enable_network, p); |
d62a17ae | 571 | if (node) { |
572 | node->info = NULL; | |
718e3744 | 573 | |
d62a17ae | 574 | /* Unlock info lock. */ |
fe08ba7e | 575 | agg_unlock_node(node); |
718e3744 | 576 | |
d62a17ae | 577 | /* Unlock lookup lock. */ |
fe08ba7e | 578 | agg_unlock_node(node); |
718e3744 | 579 | |
cc48702b | 580 | return NB_OK; |
d62a17ae | 581 | } |
cc48702b RW |
582 | |
583 | return NB_ERR_INCONSISTENCY; | |
718e3744 | 584 | } |
585 | ||
586 | /* Lookup function. */ | |
5c84b9a5 | 587 | static int ripng_enable_if_lookup(struct ripng *ripng, const char *ifname) |
718e3744 | 588 | { |
d62a17ae | 589 | unsigned int i; |
590 | char *str; | |
591 | ||
b0ba762f RW |
592 | if (!ripng) |
593 | return -1; | |
594 | ||
595 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
596 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) | |
d62a17ae | 597 | if (strcmp(str, ifname) == 0) |
598 | return i; | |
599 | return -1; | |
718e3744 | 600 | } |
601 | ||
5c84b9a5 | 602 | int ripng_enable_if_add(struct ripng *ripng, const char *ifname) |
718e3744 | 603 | { |
d62a17ae | 604 | int ret; |
718e3744 | 605 | |
5c84b9a5 | 606 | ret = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 607 | if (ret >= 0) |
cc48702b | 608 | return NB_ERR_INCONSISTENCY; |
718e3744 | 609 | |
b0ba762f | 610 | vector_set(ripng->enable_if, strdup(ifname)); |
718e3744 | 611 | |
5c84b9a5 | 612 | ripng_enable_apply_all(ripng); |
a94434b6 | 613 | |
cc48702b | 614 | return NB_OK; |
718e3744 | 615 | } |
616 | ||
5c84b9a5 | 617 | int ripng_enable_if_delete(struct ripng *ripng, const char *ifname) |
718e3744 | 618 | { |
d62a17ae | 619 | int index; |
620 | char *str; | |
718e3744 | 621 | |
5c84b9a5 | 622 | index = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 623 | if (index < 0) |
cc48702b | 624 | return NB_ERR_INCONSISTENCY; |
718e3744 | 625 | |
b0ba762f | 626 | str = vector_slot(ripng->enable_if, index); |
d62a17ae | 627 | free(str); |
b0ba762f | 628 | vector_unset(ripng->enable_if, index); |
718e3744 | 629 | |
5c84b9a5 | 630 | ripng_enable_apply_all(ripng); |
a94434b6 | 631 | |
cc48702b | 632 | return NB_OK; |
718e3744 | 633 | } |
634 | ||
635 | /* Wake up interface. */ | |
d62a17ae | 636 | static int ripng_interface_wakeup(struct thread *t) |
718e3744 | 637 | { |
d62a17ae | 638 | struct interface *ifp; |
639 | struct ripng_interface *ri; | |
718e3744 | 640 | |
d62a17ae | 641 | /* Get interface. */ |
642 | ifp = THREAD_ARG(t); | |
718e3744 | 643 | |
d62a17ae | 644 | ri = ifp->info; |
645 | ri->t_wakeup = NULL; | |
718e3744 | 646 | |
d62a17ae | 647 | /* Join to multicast group. */ |
5c84b9a5 | 648 | if (ripng_multicast_join(ifp, ri->ripng->sock) < 0) { |
450971aa | 649 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
650 | "multicast join failed, interface %s not running", |
651 | ifp->name); | |
d62a17ae | 652 | return 0; |
653 | } | |
654 | ||
655 | /* Set running flag. */ | |
656 | ri->running = 1; | |
718e3744 | 657 | |
d62a17ae | 658 | /* Send RIP request to the interface. */ |
659 | ripng_request(ifp); | |
718e3744 | 660 | |
d62a17ae | 661 | return 0; |
718e3744 | 662 | } |
663 | ||
d62a17ae | 664 | static void ripng_connect_set(struct interface *ifp, int set) |
a94434b6 | 665 | { |
5c84b9a5 RW |
666 | struct ripng_interface *ri = ifp->info; |
667 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 668 | struct listnode *node, *nnode; |
669 | struct connected *connected; | |
670 | struct prefix_ipv6 address; | |
671 | ||
672 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, connected)) { | |
673 | struct prefix *p; | |
674 | p = connected->address; | |
675 | ||
676 | if (p->family != AF_INET6) | |
677 | continue; | |
678 | ||
679 | address.family = AF_INET6; | |
680 | address.prefix = p->u.prefix6; | |
681 | address.prefixlen = p->prefixlen; | |
682 | apply_mask_ipv6(&address); | |
683 | ||
684 | if (set) { | |
685 | /* Check once more wether this prefix is within a | |
686 | * "network IF_OR_PREF" one */ | |
5c84b9a5 RW |
687 | if ((ripng_enable_if_lookup(ripng, connected->ifp->name) |
688 | >= 0) | |
d62a17ae | 689 | || (ripng_enable_network_lookup2(connected) >= 0)) |
690 | ripng_redistribute_add( | |
5c84b9a5 | 691 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 692 | RIPNG_ROUTE_INTERFACE, &address, |
693 | connected->ifp->ifindex, NULL, 0); | |
694 | } else { | |
5c84b9a5 RW |
695 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
696 | RIPNG_ROUTE_INTERFACE, | |
697 | &address, | |
698 | connected->ifp->ifindex); | |
699 | if (ripng_redistribute_check(ripng, | |
700 | ZEBRA_ROUTE_CONNECT)) | |
d62a17ae | 701 | ripng_redistribute_add( |
5c84b9a5 | 702 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 703 | RIPNG_ROUTE_REDISTRIBUTE, &address, |
704 | connected->ifp->ifindex, NULL, 0); | |
705 | } | |
706 | } | |
a94434b6 | 707 | } |
708 | ||
718e3744 | 709 | /* Check RIPng is enabed on this interface. */ |
d62a17ae | 710 | void ripng_enable_apply(struct interface *ifp) |
718e3744 | 711 | { |
d62a17ae | 712 | int ret; |
713 | struct ripng_interface *ri = NULL; | |
714 | ||
715 | /* Check interface. */ | |
716 | if (!if_is_up(ifp)) | |
717 | return; | |
718 | ||
719 | ri = ifp->info; | |
720 | ||
721 | /* Is this interface a candidate for RIPng ? */ | |
722 | ret = ripng_enable_network_lookup_if(ifp); | |
723 | ||
724 | /* If the interface is matched. */ | |
725 | if (ret > 0) | |
726 | ri->enable_network = 1; | |
727 | else | |
728 | ri->enable_network = 0; | |
729 | ||
730 | /* Check interface name configuration. */ | |
5c84b9a5 | 731 | ret = ripng_enable_if_lookup(ri->ripng, ifp->name); |
d62a17ae | 732 | if (ret >= 0) |
733 | ri->enable_interface = 1; | |
734 | else | |
735 | ri->enable_interface = 0; | |
736 | ||
737 | /* any candidate interface MUST have a link-local IPv6 address */ | |
738 | if ((!ripng_if_ipv6_lladdress_check(ifp)) | |
739 | && (ri->enable_network || ri->enable_interface)) { | |
740 | ri->enable_network = 0; | |
741 | ri->enable_interface = 0; | |
742 | zlog_warn("Interface %s does not have any link-local address", | |
743 | ifp->name); | |
744 | } | |
745 | ||
746 | /* Update running status of the interface. */ | |
747 | if (ri->enable_network || ri->enable_interface) { | |
748 | zlog_info("RIPng INTERFACE ON %s", ifp->name); | |
749 | ||
750 | /* Add interface wake up thread. */ | |
751 | thread_add_timer(master, ripng_interface_wakeup, ifp, 1, | |
752 | &ri->t_wakeup); | |
753 | ||
754 | ripng_connect_set(ifp, 1); | |
755 | } else { | |
756 | if (ri->running) { | |
757 | /* Might as well clean up the route table as well | |
758 | * ripng_if_down sets to 0 ri->running, and displays | |
759 | *"turn off %s" | |
760 | **/ | |
761 | ripng_if_down(ifp); | |
762 | ||
763 | ripng_connect_set(ifp, 0); | |
764 | } | |
718e3744 | 765 | } |
718e3744 | 766 | } |
767 | ||
768 | /* Set distribute list to all interfaces. */ | |
5c84b9a5 | 769 | static void ripng_enable_apply_all(struct ripng *ripng) |
718e3744 | 770 | { |
d62a17ae | 771 | struct interface *ifp; |
718e3744 | 772 | |
dde7b15b | 773 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 774 | ripng_enable_apply(ifp); |
718e3744 | 775 | } |
6b0655a2 | 776 | |
a94434b6 | 777 | /* Clear all network and neighbor configuration */ |
5c84b9a5 | 778 | void ripng_clean_network(struct ripng *ripng) |
a94434b6 | 779 | { |
d62a17ae | 780 | unsigned int i; |
781 | char *str; | |
fe08ba7e | 782 | struct agg_node *rn; |
d62a17ae | 783 | |
29b94d58 RW |
784 | /* ripng->enable_network */ |
785 | for (rn = agg_route_top(ripng->enable_network); rn; | |
fe08ba7e | 786 | rn = agg_route_next(rn)) |
d62a17ae | 787 | if (rn->info) { |
788 | rn->info = NULL; | |
fe08ba7e | 789 | agg_unlock_node(rn); |
d62a17ae | 790 | } |
791 | ||
b0ba762f RW |
792 | /* ripng->enable_if */ |
793 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
794 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) { | |
d62a17ae | 795 | free(str); |
b0ba762f | 796 | vector_slot(ripng->enable_if, i) = NULL; |
d62a17ae | 797 | } |
a94434b6 | 798 | } |
6b0655a2 | 799 | |
718e3744 | 800 | /* Utility function for looking up passive interface settings. */ |
5c84b9a5 RW |
801 | static int ripng_passive_interface_lookup(struct ripng *ripng, |
802 | const char *ifname) | |
718e3744 | 803 | { |
d62a17ae | 804 | unsigned int i; |
805 | char *str; | |
806 | ||
0c32404f RW |
807 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
808 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) | |
d62a17ae | 809 | if (strcmp(str, ifname) == 0) |
810 | return i; | |
811 | return -1; | |
718e3744 | 812 | } |
813 | ||
d62a17ae | 814 | void ripng_passive_interface_apply(struct interface *ifp) |
718e3744 | 815 | { |
d62a17ae | 816 | int ret; |
817 | struct ripng_interface *ri; | |
5c84b9a5 | 818 | struct ripng *ripng; |
718e3744 | 819 | |
d62a17ae | 820 | ri = ifp->info; |
5c84b9a5 RW |
821 | ripng = ri->ripng; |
822 | if (!ripng) | |
823 | return; | |
718e3744 | 824 | |
5c84b9a5 | 825 | ret = ripng_passive_interface_lookup(ripng, ifp->name); |
d62a17ae | 826 | if (ret < 0) |
827 | ri->passive = 0; | |
828 | else | |
829 | ri->passive = 1; | |
718e3744 | 830 | } |
831 | ||
5c84b9a5 | 832 | static void ripng_passive_interface_apply_all(struct ripng *ripng) |
718e3744 | 833 | { |
d62a17ae | 834 | struct interface *ifp; |
718e3744 | 835 | |
dde7b15b | 836 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 837 | ripng_passive_interface_apply(ifp); |
718e3744 | 838 | } |
839 | ||
840 | /* Passive interface. */ | |
5c84b9a5 | 841 | int ripng_passive_interface_set(struct ripng *ripng, const char *ifname) |
718e3744 | 842 | { |
5c84b9a5 | 843 | if (ripng_passive_interface_lookup(ripng, ifname) >= 0) |
22e8c7ae | 844 | return NB_ERR_INCONSISTENCY; |
718e3744 | 845 | |
0c32404f | 846 | vector_set(ripng->passive_interface, strdup(ifname)); |
718e3744 | 847 | |
5c84b9a5 | 848 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 849 | |
22e8c7ae | 850 | return NB_OK; |
718e3744 | 851 | } |
852 | ||
5c84b9a5 | 853 | int ripng_passive_interface_unset(struct ripng *ripng, const char *ifname) |
718e3744 | 854 | { |
d62a17ae | 855 | int i; |
856 | char *str; | |
718e3744 | 857 | |
5c84b9a5 | 858 | i = ripng_passive_interface_lookup(ripng, ifname); |
d62a17ae | 859 | if (i < 0) |
22e8c7ae | 860 | return NB_ERR_INCONSISTENCY; |
718e3744 | 861 | |
0c32404f | 862 | str = vector_slot(ripng->passive_interface, i); |
d62a17ae | 863 | free(str); |
0c32404f | 864 | vector_unset(ripng->passive_interface, i); |
718e3744 | 865 | |
5c84b9a5 | 866 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 867 | |
22e8c7ae | 868 | return NB_OK; |
718e3744 | 869 | } |
870 | ||
871 | /* Free all configured RIP passive-interface settings. */ | |
5c84b9a5 | 872 | void ripng_passive_interface_clean(struct ripng *ripng) |
718e3744 | 873 | { |
d62a17ae | 874 | unsigned int i; |
875 | char *str; | |
876 | ||
0c32404f RW |
877 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
878 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) { | |
d62a17ae | 879 | free(str); |
0c32404f | 880 | vector_slot(ripng->passive_interface, i) = NULL; |
d62a17ae | 881 | } |
5c84b9a5 | 882 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 883 | } |
884 | ||
885 | /* Write RIPng enable network and interface to the vty. */ | |
5c84b9a5 | 886 | int ripng_network_write(struct vty *vty, struct ripng *ripng) |
718e3744 | 887 | { |
d62a17ae | 888 | unsigned int i; |
889 | const char *ifname; | |
fe08ba7e | 890 | struct agg_node *node; |
d62a17ae | 891 | char buf[BUFSIZ]; |
892 | ||
893 | /* Write enable network. */ | |
29b94d58 | 894 | for (node = agg_route_top(ripng->enable_network); node; |
fe08ba7e | 895 | node = agg_route_next(node)) |
d62a17ae | 896 | if (node->info) { |
897 | struct prefix *p = &node->p; | |
22e8c7ae | 898 | vty_out(vty, " %s/%d\n", |
d62a17ae | 899 | inet_ntop(p->family, &p->u.prefix, buf, BUFSIZ), |
900 | p->prefixlen); | |
901 | } | |
902 | ||
903 | /* Write enable interface. */ | |
b0ba762f RW |
904 | for (i = 0; i < vector_active(ripng->enable_if); i++) |
905 | if ((ifname = vector_slot(ripng->enable_if, i)) != NULL) | |
22e8c7ae | 906 | vty_out(vty, " %s\n", ifname); |
d62a17ae | 907 | |
908 | return 0; | |
718e3744 | 909 | } |
910 | ||
d62a17ae | 911 | static struct ripng_interface *ri_new(void) |
718e3744 | 912 | { |
d62a17ae | 913 | struct ripng_interface *ri; |
5c84b9a5 | 914 | |
eaf58ba9 | 915 | ri = XCALLOC(MTYPE_RIPNG_IF, sizeof(struct ripng_interface)); |
a94434b6 | 916 | |
d62a17ae | 917 | /* Set default split-horizon behavior. If the interface is Frame |
918 | Relay or SMDS is enabled, the default value for split-horizon is | |
919 | off. But currently Zebra does detect Frame Relay or SMDS | |
920 | interface. So all interface is set to split horizon. */ | |
d406db4c RW |
921 | ri->split_horizon = |
922 | yang_get_default_enum("%s/split-horizon", RIPNG_IFACE); | |
a94434b6 | 923 | |
d62a17ae | 924 | return ri; |
718e3744 | 925 | } |
926 | ||
dde7b15b RW |
927 | void ripng_interface_sync(struct interface *ifp) |
928 | { | |
929 | struct vrf *vrf; | |
930 | ||
a36898e7 | 931 | vrf = vrf_lookup_by_id(ifp->vrf_id); |
dde7b15b RW |
932 | if (vrf) { |
933 | struct ripng_interface *ri; | |
934 | ||
935 | ri = ifp->info; | |
936 | if (ri) | |
937 | ri->ripng = vrf->info; | |
938 | } | |
939 | } | |
940 | ||
d62a17ae | 941 | static int ripng_if_new_hook(struct interface *ifp) |
718e3744 | 942 | { |
d62a17ae | 943 | ifp->info = ri_new(); |
dde7b15b RW |
944 | ripng_interface_sync(ifp); |
945 | ||
d62a17ae | 946 | return 0; |
718e3744 | 947 | } |
948 | ||
a94434b6 | 949 | /* Called when interface structure deleted. */ |
d62a17ae | 950 | static int ripng_if_delete_hook(struct interface *ifp) |
a94434b6 | 951 | { |
eaf58ba9 | 952 | XFREE(MTYPE_RIPNG_IF, ifp->info); |
d62a17ae | 953 | ifp->info = NULL; |
954 | return 0; | |
a94434b6 | 955 | } |
956 | ||
718e3744 | 957 | /* Configuration write function for ripngd. */ |
d62a17ae | 958 | static int interface_config_write(struct vty *vty) |
718e3744 | 959 | { |
dde7b15b | 960 | struct vrf *vrf; |
d62a17ae | 961 | int write = 0; |
962 | ||
dde7b15b RW |
963 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { |
964 | struct interface *ifp; | |
d62a17ae | 965 | |
dde7b15b RW |
966 | FOR_ALL_INTERFACES (vrf, ifp) { |
967 | struct lyd_node *dnode; | |
d62a17ae | 968 | |
dde7b15b RW |
969 | dnode = yang_dnode_get( |
970 | running_config->dnode, | |
971 | "/frr-interface:lib/interface[name='%s'][vrf='%s']", | |
972 | ifp->name, vrf->name); | |
973 | if (dnode == NULL) | |
974 | continue; | |
d62a17ae | 975 | |
dde7b15b RW |
976 | write = 1; |
977 | nb_cli_show_dnode_cmds(vty, dnode, false); | |
978 | } | |
a94434b6 | 979 | } |
d406db4c | 980 | |
d62a17ae | 981 | return write; |
718e3744 | 982 | } |
983 | ||
984 | /* ripngd's interface node. */ | |
d62a17ae | 985 | static struct cmd_node interface_node = { |
986 | INTERFACE_NODE, "%s(config-if)# ", 1 /* VTYSH */ | |
718e3744 | 987 | }; |
988 | ||
138c5a74 DS |
989 | static int ripng_ifp_up(struct interface *ifp) |
990 | { | |
991 | return 0; | |
992 | } | |
993 | ||
994 | static int ripng_ifp_down(struct interface *ifp) | |
995 | { | |
996 | return 0; | |
997 | } | |
998 | ||
999 | static int ripng_ifp_destroy(struct interface *ifp) | |
1000 | { | |
1001 | return 0; | |
1002 | } | |
1003 | ||
718e3744 | 1004 | /* Initialization of interface. */ |
4d762f26 | 1005 | void ripng_if_init(void) |
718e3744 | 1006 | { |
d62a17ae | 1007 | /* Interface initialize. */ |
ce19a04a DL |
1008 | hook_register_prio(if_add, 0, ripng_if_new_hook); |
1009 | hook_register_prio(if_del, 0, ripng_if_delete_hook); | |
718e3744 | 1010 | |
d62a17ae | 1011 | /* Install interface node. */ |
1012 | install_node(&interface_node, interface_config_write); | |
1013 | if_cmd_init(); | |
138c5a74 DS |
1014 | if_zapi_callbacks(ripng_ifp_create, ripng_ifp_up, |
1015 | ripng_ifp_down, ripng_ifp_destroy); | |
718e3744 | 1016 | } |