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Commit | Line | Data |
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718e3744 | 1 | /* |
2 | * Interface related function for RIPng. | |
3 | * Copyright (C) 1998 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "linklist.h" | |
25 | #include "if.h" | |
26 | #include "prefix.h" | |
27 | #include "memory.h" | |
28 | #include "network.h" | |
29 | #include "filter.h" | |
30 | #include "log.h" | |
31 | #include "stream.h" | |
32 | #include "zclient.h" | |
33 | #include "command.h" | |
fe08ba7e | 34 | #include "agg_table.h" |
718e3744 | 35 | #include "thread.h" |
4d4653af | 36 | #include "privs.h" |
6a69b354 | 37 | #include "vrf.h" |
7f9a4fd7 | 38 | #include "lib_errors.h" |
d406db4c | 39 | #include "northbound_cli.h" |
718e3744 | 40 | |
41 | #include "ripngd/ripngd.h" | |
42 | #include "ripngd/ripng_debug.h" | |
6b0655a2 | 43 | |
718e3744 | 44 | /* If RFC2133 definition is used. */ |
45 | #ifndef IPV6_JOIN_GROUP | |
c258527b | 46 | #define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP |
718e3744 | 47 | #endif |
48 | #ifndef IPV6_LEAVE_GROUP | |
c258527b | 49 | #define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP |
718e3744 | 50 | #endif |
51 | ||
bf8d3d6a | 52 | DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_IF, "ripng interface"); |
eaf58ba9 | 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 | 171 | ri = ifp->info; |
29ceb848 IR |
172 | |
173 | THREAD_OFF(ri->t_wakeup); | |
174 | ||
5c84b9a5 RW |
175 | ripng = ri->ripng; |
176 | ||
d62a17ae | 177 | if (ripng) |
fe08ba7e DS |
178 | for (rp = agg_route_top(ripng->table); rp; |
179 | rp = agg_route_next(rp)) | |
d62a17ae | 180 | if ((list = rp->info) != NULL) |
181 | for (ALL_LIST_ELEMENTS(list, listnode, nextnode, | |
182 | rinfo)) | |
183 | if (rinfo->ifindex == ifp->ifindex) | |
5c84b9a5 | 184 | ripng_ecmp_delete(ripng, rinfo); |
d62a17ae | 185 | |
d62a17ae | 186 | |
187 | if (ri->running) { | |
188 | if (IS_RIPNG_DEBUG_EVENT) | |
189 | zlog_debug("turn off %s", ifp->name); | |
190 | ||
191 | /* Leave from multicast group. */ | |
fa3bf3a2 MS |
192 | if (ripng) |
193 | ripng_multicast_leave(ifp, ripng->sock); | |
d62a17ae | 194 | |
195 | ri->running = 0; | |
196 | } | |
197 | ||
198 | return 0; | |
718e3744 | 199 | } |
200 | ||
201 | /* Inteface link up message processing. */ | |
ddbf3e60 | 202 | static int ripng_ifp_up(struct interface *ifp) |
718e3744 | 203 | { |
096f7609 | 204 | if (IS_RIPNG_DEBUG_ZEBRA) |
d62a17ae | 205 | zlog_debug( |
24c4ee4a | 206 | "interface up %s vrf %s(%u) index %d flags %llx metric %d mtu %d", |
096f7609 IR |
207 | ifp->name, ifp->vrf->name, ifp->vrf->vrf_id, |
208 | ifp->ifindex, (unsigned long long)ifp->flags, | |
209 | ifp->metric, ifp->mtu6); | |
dde7b15b RW |
210 | |
211 | ripng_interface_sync(ifp); | |
718e3744 | 212 | |
d62a17ae | 213 | /* Check if this interface is RIPng enabled or not. */ |
214 | ripng_enable_apply(ifp); | |
718e3744 | 215 | |
d62a17ae | 216 | /* Check for a passive interface. */ |
217 | ripng_passive_interface_apply(ifp); | |
718e3744 | 218 | |
d62a17ae | 219 | /* Apply distribute list to the all interface. */ |
220 | ripng_distribute_update_interface(ifp); | |
718e3744 | 221 | |
d62a17ae | 222 | return 0; |
718e3744 | 223 | } |
224 | ||
225 | /* Inteface link down message processing. */ | |
b0b69e59 | 226 | static int ripng_ifp_down(struct interface *ifp) |
718e3744 | 227 | { |
dde7b15b | 228 | ripng_interface_sync(ifp); |
d62a17ae | 229 | ripng_if_down(ifp); |
718e3744 | 230 | |
096f7609 | 231 | if (IS_RIPNG_DEBUG_ZEBRA) |
d62a17ae | 232 | zlog_debug( |
24c4ee4a | 233 | "interface down %s vrf %s(%u) index %d flags %#llx metric %d mtu %d", |
096f7609 IR |
234 | ifp->name, ifp->vrf->name, ifp->vrf->vrf_id, |
235 | ifp->ifindex, (unsigned long long)ifp->flags, | |
236 | ifp->metric, ifp->mtu6); | |
718e3744 | 237 | |
d62a17ae | 238 | return 0; |
718e3744 | 239 | } |
240 | ||
241 | /* Inteface addition message from zebra. */ | |
ef7bd2a3 | 242 | static int ripng_ifp_create(struct interface *ifp) |
718e3744 | 243 | { |
dde7b15b | 244 | ripng_interface_sync(ifp); |
718e3744 | 245 | |
096f7609 | 246 | if (IS_RIPNG_DEBUG_ZEBRA) |
d62a17ae | 247 | zlog_debug( |
24c4ee4a | 248 | "RIPng interface add %s vrf %s(%u) index %d flags %#llx metric %d mtu %d", |
096f7609 IR |
249 | ifp->name, ifp->vrf->name, ifp->vrf->vrf_id, |
250 | ifp->ifindex, (unsigned long long)ifp->flags, | |
251 | ifp->metric, ifp->mtu6); | |
718e3744 | 252 | |
d62a17ae | 253 | /* Check is this interface is RIP enabled or not.*/ |
254 | ripng_enable_apply(ifp); | |
718e3744 | 255 | |
d62a17ae | 256 | /* Apply distribute list to the interface. */ |
257 | ripng_distribute_update_interface(ifp); | |
718e3744 | 258 | |
d62a17ae | 259 | /* Check interface routemap. */ |
260 | ripng_if_rmap_update_interface(ifp); | |
718e3744 | 261 | |
d62a17ae | 262 | return 0; |
718e3744 | 263 | } |
264 | ||
3c3c3252 | 265 | static int ripng_ifp_destroy(struct interface *ifp) |
718e3744 | 266 | { |
dde7b15b | 267 | ripng_interface_sync(ifp); |
d62a17ae | 268 | if (if_is_up(ifp)) { |
269 | ripng_if_down(ifp); | |
270 | } | |
a94434b6 | 271 | |
13c5f95e DS |
272 | if (IS_RIPNG_DEBUG_ZEBRA) |
273 | zlog_debug( | |
274 | "interface delete %s vrf %s(%u) index %d flags %#llx metric %d mtu %d", | |
096f7609 IR |
275 | ifp->name, ifp->vrf->name, ifp->vrf->vrf_id, |
276 | ifp->ifindex, (unsigned long long)ifp->flags, | |
277 | ifp->metric, ifp->mtu6); | |
a94434b6 | 278 | |
d62a17ae | 279 | return 0; |
718e3744 | 280 | } |
281 | ||
dde7b15b | 282 | /* VRF update for an interface. */ |
121f9dee | 283 | int ripng_interface_vrf_update(ZAPI_CALLBACK_ARGS) |
dde7b15b RW |
284 | { |
285 | struct interface *ifp; | |
286 | vrf_id_t new_vrf_id; | |
287 | ||
288 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
289 | &new_vrf_id); | |
290 | if (!ifp) | |
291 | return 0; | |
292 | ||
24c4ee4a | 293 | if (IS_RIPNG_DEBUG_ZEBRA) { |
24c4ee4a DS |
294 | struct vrf *nvrf = vrf_lookup_by_id(new_vrf_id); |
295 | ||
296 | zlog_debug("interface %s VRF change vrf %s(%u) new vrf %s(%u)", | |
096f7609 IR |
297 | ifp->name, ifp->vrf->name, vrf_id, VRF_LOGNAME(nvrf), |
298 | new_vrf_id); | |
24c4ee4a | 299 | } |
dde7b15b | 300 | |
a36898e7 | 301 | if_update_to_new_vrf(ifp, new_vrf_id); |
dde7b15b RW |
302 | ripng_interface_sync(ifp); |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
5c84b9a5 | 307 | void ripng_interface_clean(struct ripng *ripng) |
a94434b6 | 308 | { |
d62a17ae | 309 | struct interface *ifp; |
310 | struct ripng_interface *ri; | |
a94434b6 | 311 | |
dde7b15b | 312 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 313 | ri = ifp->info; |
a94434b6 | 314 | |
d62a17ae | 315 | ri->enable_network = 0; |
316 | ri->enable_interface = 0; | |
317 | ri->running = 0; | |
a94434b6 | 318 | |
b3d6bc6e | 319 | thread_cancel(&ri->t_wakeup); |
d62a17ae | 320 | } |
321 | } | |
a94434b6 | 322 | |
d62a17ae | 323 | static void ripng_apply_address_add(struct connected *ifc) |
324 | { | |
5c84b9a5 RW |
325 | struct ripng_interface *ri = ifc->ifp->info; |
326 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 327 | struct prefix_ipv6 address; |
328 | struct prefix *p; | |
329 | ||
330 | if (!ripng) | |
331 | return; | |
332 | ||
333 | if (!if_is_up(ifc->ifp)) | |
334 | return; | |
335 | ||
336 | p = ifc->address; | |
337 | ||
338 | memset(&address, 0, sizeof(address)); | |
339 | address.family = p->family; | |
340 | address.prefix = p->u.prefix6; | |
341 | address.prefixlen = p->prefixlen; | |
342 | apply_mask_ipv6(&address); | |
343 | ||
344 | /* Check if this interface is RIP enabled or not | |
345 | or Check if this address's prefix is RIP enabled */ | |
5c84b9a5 | 346 | if ((ripng_enable_if_lookup(ripng, ifc->ifp->name) >= 0) |
d62a17ae | 347 | || (ripng_enable_network_lookup2(ifc) >= 0)) |
5c84b9a5 | 348 | ripng_redistribute_add(ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 349 | RIPNG_ROUTE_INTERFACE, &address, |
350 | ifc->ifp->ifindex, NULL, 0); | |
a94434b6 | 351 | } |
352 | ||
121f9dee | 353 | int ripng_interface_address_add(ZAPI_CALLBACK_ARGS) |
718e3744 | 354 | { |
d62a17ae | 355 | struct connected *c; |
356 | struct prefix *p; | |
718e3744 | 357 | |
d62a17ae | 358 | c = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, |
359 | zclient->ibuf, vrf_id); | |
718e3744 | 360 | |
d62a17ae | 361 | if (c == NULL) |
362 | return 0; | |
718e3744 | 363 | |
d62a17ae | 364 | p = c->address; |
718e3744 | 365 | |
d62a17ae | 366 | if (p->family == AF_INET6) { |
367 | struct ripng_interface *ri = c->ifp->info; | |
a94434b6 | 368 | |
d62a17ae | 369 | if (IS_RIPNG_DEBUG_ZEBRA) |
e0259674 | 370 | zlog_debug("RIPng connected address %pFX add", p); |
a94434b6 | 371 | |
d62a17ae | 372 | /* Check is this prefix needs to be redistributed. */ |
373 | ripng_apply_address_add(c); | |
a94434b6 | 374 | |
d62a17ae | 375 | /* Let's try once again whether the interface could be activated |
376 | */ | |
377 | if (!ri->running) { | |
378 | /* Check if this interface is RIP enabled or not.*/ | |
379 | ripng_enable_apply(c->ifp); | |
a94434b6 | 380 | |
d62a17ae | 381 | /* Apply distribute list to the interface. */ |
382 | ripng_distribute_update_interface(c->ifp); | |
718e3744 | 383 | |
d62a17ae | 384 | /* Check interface routemap. */ |
385 | ripng_if_rmap_update_interface(c->ifp); | |
386 | } | |
387 | } | |
388 | ||
389 | return 0; | |
718e3744 | 390 | } |
391 | ||
d62a17ae | 392 | static void ripng_apply_address_del(struct connected *ifc) |
393 | { | |
5c84b9a5 RW |
394 | struct ripng_interface *ri = ifc->ifp->info; |
395 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 396 | struct prefix_ipv6 address; |
397 | struct prefix *p; | |
a94434b6 | 398 | |
d62a17ae | 399 | if (!ripng) |
400 | return; | |
a94434b6 | 401 | |
d62a17ae | 402 | if (!if_is_up(ifc->ifp)) |
403 | return; | |
a94434b6 | 404 | |
d62a17ae | 405 | p = ifc->address; |
a94434b6 | 406 | |
d62a17ae | 407 | memset(&address, 0, sizeof(address)); |
408 | address.family = p->family; | |
409 | address.prefix = p->u.prefix6; | |
410 | address.prefixlen = p->prefixlen; | |
411 | apply_mask_ipv6(&address); | |
a94434b6 | 412 | |
5c84b9a5 RW |
413 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
414 | RIPNG_ROUTE_INTERFACE, &address, | |
415 | ifc->ifp->ifindex); | |
a94434b6 | 416 | } |
417 | ||
121f9dee | 418 | int ripng_interface_address_delete(ZAPI_CALLBACK_ARGS) |
718e3744 | 419 | { |
d62a17ae | 420 | struct connected *ifc; |
421 | struct prefix *p; | |
d62a17ae | 422 | |
423 | ifc = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, | |
424 | zclient->ibuf, vrf_id); | |
425 | ||
426 | if (ifc) { | |
427 | p = ifc->address; | |
428 | ||
429 | if (p->family == AF_INET6) { | |
430 | if (IS_RIPNG_DEBUG_ZEBRA) | |
431 | zlog_debug( | |
e0259674 DS |
432 | "RIPng connected address %pFX delete", |
433 | p); | |
d62a17ae | 434 | |
435 | /* Check wether this prefix needs to be removed. */ | |
436 | ripng_apply_address_del(ifc); | |
437 | } | |
721c0857 | 438 | connected_free(&ifc); |
718e3744 | 439 | } |
718e3744 | 440 | |
d62a17ae | 441 | return 0; |
718e3744 | 442 | } |
6b0655a2 | 443 | |
718e3744 | 444 | /* Lookup RIPng enable network. */ |
a94434b6 | 445 | /* Check wether the interface has at least a connected prefix that |
29b94d58 | 446 | * is within the ripng->enable_network table. */ |
d62a17ae | 447 | static int ripng_enable_network_lookup_if(struct interface *ifp) |
718e3744 | 448 | { |
5c84b9a5 RW |
449 | struct ripng_interface *ri = ifp->info; |
450 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 451 | struct listnode *node; |
452 | struct connected *connected; | |
453 | struct prefix_ipv6 address; | |
454 | ||
29b94d58 RW |
455 | if (!ripng) |
456 | return -1; | |
457 | ||
d62a17ae | 458 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { |
459 | struct prefix *p; | |
fe08ba7e | 460 | struct agg_node *n; |
d62a17ae | 461 | |
462 | p = connected->address; | |
463 | ||
464 | if (p->family == AF_INET6) { | |
465 | address.family = AF_INET6; | |
466 | address.prefix = p->u.prefix6; | |
467 | address.prefixlen = IPV6_MAX_BITLEN; | |
468 | ||
29b94d58 | 469 | n = agg_node_match(ripng->enable_network, |
fe08ba7e | 470 | (struct prefix *)&address); |
ee6f7757 | 471 | if (n) { |
fe08ba7e | 472 | agg_unlock_node(n); |
d62a17ae | 473 | return 1; |
474 | } | |
475 | } | |
476 | } | |
477 | return -1; | |
718e3744 | 478 | } |
479 | ||
29b94d58 | 480 | /* Check wether connected is within the ripng->enable_network table. */ |
d62a17ae | 481 | static int ripng_enable_network_lookup2(struct connected *connected) |
a94434b6 | 482 | { |
5c84b9a5 RW |
483 | struct ripng_interface *ri = connected->ifp->info; |
484 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 485 | struct prefix_ipv6 address; |
486 | struct prefix *p; | |
a94434b6 | 487 | |
29b94d58 RW |
488 | if (!ripng) |
489 | return -1; | |
490 | ||
d62a17ae | 491 | p = connected->address; |
a94434b6 | 492 | |
d62a17ae | 493 | if (p->family == AF_INET6) { |
fe08ba7e | 494 | struct agg_node *node; |
a94434b6 | 495 | |
d62a17ae | 496 | address.family = p->family; |
497 | address.prefix = p->u.prefix6; | |
498 | address.prefixlen = IPV6_MAX_BITLEN; | |
a94434b6 | 499 | |
d62a17ae | 500 | /* LPM on p->family, p->u.prefix6/IPV6_MAX_BITLEN within |
29b94d58 RW |
501 | * ripng->enable_network */ |
502 | node = agg_node_match(ripng->enable_network, | |
fe08ba7e | 503 | (struct prefix *)&address); |
a94434b6 | 504 | |
d62a17ae | 505 | if (node) { |
fe08ba7e | 506 | agg_unlock_node(node); |
d62a17ae | 507 | return 1; |
508 | } | |
509 | } | |
a94434b6 | 510 | |
d62a17ae | 511 | return -1; |
a94434b6 | 512 | } |
513 | ||
718e3744 | 514 | /* Add RIPng enable network. */ |
5c84b9a5 | 515 | int ripng_enable_network_add(struct ripng *ripng, struct prefix *p) |
718e3744 | 516 | { |
fe08ba7e | 517 | struct agg_node *node; |
718e3744 | 518 | |
29b94d58 | 519 | node = agg_node_get(ripng->enable_network, p); |
718e3744 | 520 | |
d62a17ae | 521 | if (node->info) { |
fe08ba7e | 522 | agg_unlock_node(node); |
cc48702b | 523 | return NB_ERR_INCONSISTENCY; |
d62a17ae | 524 | } else |
525 | node->info = (void *)1; | |
718e3744 | 526 | |
d62a17ae | 527 | /* XXX: One should find a better solution than a generic one */ |
5c84b9a5 | 528 | ripng_enable_apply_all(ripng); |
a94434b6 | 529 | |
cc48702b | 530 | return NB_OK; |
718e3744 | 531 | } |
532 | ||
533 | /* Delete RIPng enable network. */ | |
5c84b9a5 | 534 | int ripng_enable_network_delete(struct ripng *ripng, struct prefix *p) |
718e3744 | 535 | { |
fe08ba7e | 536 | struct agg_node *node; |
718e3744 | 537 | |
29b94d58 | 538 | node = agg_node_lookup(ripng->enable_network, p); |
d62a17ae | 539 | if (node) { |
540 | node->info = NULL; | |
718e3744 | 541 | |
d62a17ae | 542 | /* Unlock info lock. */ |
fe08ba7e | 543 | agg_unlock_node(node); |
718e3744 | 544 | |
d62a17ae | 545 | /* Unlock lookup lock. */ |
fe08ba7e | 546 | agg_unlock_node(node); |
718e3744 | 547 | |
cc48702b | 548 | return NB_OK; |
d62a17ae | 549 | } |
cc48702b RW |
550 | |
551 | return NB_ERR_INCONSISTENCY; | |
718e3744 | 552 | } |
553 | ||
554 | /* Lookup function. */ | |
5c84b9a5 | 555 | static int ripng_enable_if_lookup(struct ripng *ripng, const char *ifname) |
718e3744 | 556 | { |
d62a17ae | 557 | unsigned int i; |
558 | char *str; | |
559 | ||
b0ba762f RW |
560 | if (!ripng) |
561 | return -1; | |
562 | ||
563 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
564 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) | |
d62a17ae | 565 | if (strcmp(str, ifname) == 0) |
566 | return i; | |
567 | return -1; | |
718e3744 | 568 | } |
569 | ||
5c84b9a5 | 570 | int ripng_enable_if_add(struct ripng *ripng, const char *ifname) |
718e3744 | 571 | { |
d62a17ae | 572 | int ret; |
718e3744 | 573 | |
5c84b9a5 | 574 | ret = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 575 | if (ret >= 0) |
cc48702b | 576 | return NB_ERR_INCONSISTENCY; |
718e3744 | 577 | |
b0ba762f | 578 | vector_set(ripng->enable_if, strdup(ifname)); |
718e3744 | 579 | |
5c84b9a5 | 580 | ripng_enable_apply_all(ripng); |
a94434b6 | 581 | |
cc48702b | 582 | return NB_OK; |
718e3744 | 583 | } |
584 | ||
5c84b9a5 | 585 | int ripng_enable_if_delete(struct ripng *ripng, const char *ifname) |
718e3744 | 586 | { |
d62a17ae | 587 | int index; |
588 | char *str; | |
718e3744 | 589 | |
5c84b9a5 | 590 | index = ripng_enable_if_lookup(ripng, ifname); |
d62a17ae | 591 | if (index < 0) |
cc48702b | 592 | return NB_ERR_INCONSISTENCY; |
718e3744 | 593 | |
b0ba762f | 594 | str = vector_slot(ripng->enable_if, index); |
d62a17ae | 595 | free(str); |
b0ba762f | 596 | vector_unset(ripng->enable_if, index); |
718e3744 | 597 | |
5c84b9a5 | 598 | ripng_enable_apply_all(ripng); |
a94434b6 | 599 | |
cc48702b | 600 | return NB_OK; |
718e3744 | 601 | } |
602 | ||
603 | /* Wake up interface. */ | |
cc9f21da | 604 | static void ripng_interface_wakeup(struct thread *t) |
718e3744 | 605 | { |
d62a17ae | 606 | struct interface *ifp; |
607 | struct ripng_interface *ri; | |
718e3744 | 608 | |
d62a17ae | 609 | /* Get interface. */ |
610 | ifp = THREAD_ARG(t); | |
718e3744 | 611 | |
d62a17ae | 612 | ri = ifp->info; |
718e3744 | 613 | |
d62a17ae | 614 | /* Join to multicast group. */ |
5c84b9a5 | 615 | if (ripng_multicast_join(ifp, ri->ripng->sock) < 0) { |
450971aa | 616 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
617 | "multicast join failed, interface %s not running", |
618 | ifp->name); | |
cc9f21da | 619 | return; |
d62a17ae | 620 | } |
621 | ||
622 | /* Set running flag. */ | |
623 | ri->running = 1; | |
718e3744 | 624 | |
d62a17ae | 625 | /* Send RIP request to the interface. */ |
626 | ripng_request(ifp); | |
718e3744 | 627 | } |
628 | ||
d62a17ae | 629 | static void ripng_connect_set(struct interface *ifp, int set) |
a94434b6 | 630 | { |
5c84b9a5 RW |
631 | struct ripng_interface *ri = ifp->info; |
632 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 633 | struct listnode *node, *nnode; |
634 | struct connected *connected; | |
635 | struct prefix_ipv6 address; | |
636 | ||
637 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, connected)) { | |
638 | struct prefix *p; | |
639 | p = connected->address; | |
640 | ||
641 | if (p->family != AF_INET6) | |
642 | continue; | |
643 | ||
644 | address.family = AF_INET6; | |
645 | address.prefix = p->u.prefix6; | |
646 | address.prefixlen = p->prefixlen; | |
647 | apply_mask_ipv6(&address); | |
648 | ||
649 | if (set) { | |
650 | /* Check once more wether this prefix is within a | |
651 | * "network IF_OR_PREF" one */ | |
5c84b9a5 RW |
652 | if ((ripng_enable_if_lookup(ripng, connected->ifp->name) |
653 | >= 0) | |
d62a17ae | 654 | || (ripng_enable_network_lookup2(connected) >= 0)) |
655 | ripng_redistribute_add( | |
5c84b9a5 | 656 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 657 | RIPNG_ROUTE_INTERFACE, &address, |
658 | connected->ifp->ifindex, NULL, 0); | |
659 | } else { | |
5c84b9a5 RW |
660 | ripng_redistribute_delete(ripng, ZEBRA_ROUTE_CONNECT, |
661 | RIPNG_ROUTE_INTERFACE, | |
662 | &address, | |
663 | connected->ifp->ifindex); | |
664 | if (ripng_redistribute_check(ripng, | |
665 | ZEBRA_ROUTE_CONNECT)) | |
d62a17ae | 666 | ripng_redistribute_add( |
5c84b9a5 | 667 | ripng, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 668 | RIPNG_ROUTE_REDISTRIBUTE, &address, |
669 | connected->ifp->ifindex, NULL, 0); | |
670 | } | |
671 | } | |
a94434b6 | 672 | } |
673 | ||
718e3744 | 674 | /* Check RIPng is enabed on this interface. */ |
d62a17ae | 675 | void ripng_enable_apply(struct interface *ifp) |
718e3744 | 676 | { |
d62a17ae | 677 | int ret; |
678 | struct ripng_interface *ri = NULL; | |
679 | ||
680 | /* Check interface. */ | |
681 | if (!if_is_up(ifp)) | |
682 | return; | |
683 | ||
684 | ri = ifp->info; | |
685 | ||
686 | /* Is this interface a candidate for RIPng ? */ | |
687 | ret = ripng_enable_network_lookup_if(ifp); | |
688 | ||
689 | /* If the interface is matched. */ | |
690 | if (ret > 0) | |
691 | ri->enable_network = 1; | |
692 | else | |
693 | ri->enable_network = 0; | |
694 | ||
695 | /* Check interface name configuration. */ | |
5c84b9a5 | 696 | ret = ripng_enable_if_lookup(ri->ripng, ifp->name); |
d62a17ae | 697 | if (ret >= 0) |
698 | ri->enable_interface = 1; | |
699 | else | |
700 | ri->enable_interface = 0; | |
701 | ||
702 | /* any candidate interface MUST have a link-local IPv6 address */ | |
703 | if ((!ripng_if_ipv6_lladdress_check(ifp)) | |
704 | && (ri->enable_network || ri->enable_interface)) { | |
705 | ri->enable_network = 0; | |
706 | ri->enable_interface = 0; | |
707 | zlog_warn("Interface %s does not have any link-local address", | |
708 | ifp->name); | |
709 | } | |
710 | ||
711 | /* Update running status of the interface. */ | |
712 | if (ri->enable_network || ri->enable_interface) { | |
713 | zlog_info("RIPng INTERFACE ON %s", ifp->name); | |
714 | ||
715 | /* Add interface wake up thread. */ | |
716 | thread_add_timer(master, ripng_interface_wakeup, ifp, 1, | |
717 | &ri->t_wakeup); | |
718 | ||
719 | ripng_connect_set(ifp, 1); | |
720 | } else { | |
721 | if (ri->running) { | |
722 | /* Might as well clean up the route table as well | |
723 | * ripng_if_down sets to 0 ri->running, and displays | |
724 | *"turn off %s" | |
725 | **/ | |
726 | ripng_if_down(ifp); | |
727 | ||
728 | ripng_connect_set(ifp, 0); | |
729 | } | |
718e3744 | 730 | } |
718e3744 | 731 | } |
732 | ||
733 | /* Set distribute list to all interfaces. */ | |
5c84b9a5 | 734 | static void ripng_enable_apply_all(struct ripng *ripng) |
718e3744 | 735 | { |
d62a17ae | 736 | struct interface *ifp; |
718e3744 | 737 | |
dde7b15b | 738 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 739 | ripng_enable_apply(ifp); |
718e3744 | 740 | } |
6b0655a2 | 741 | |
a94434b6 | 742 | /* Clear all network and neighbor configuration */ |
5c84b9a5 | 743 | void ripng_clean_network(struct ripng *ripng) |
a94434b6 | 744 | { |
d62a17ae | 745 | unsigned int i; |
746 | char *str; | |
fe08ba7e | 747 | struct agg_node *rn; |
d62a17ae | 748 | |
29b94d58 RW |
749 | /* ripng->enable_network */ |
750 | for (rn = agg_route_top(ripng->enable_network); rn; | |
fe08ba7e | 751 | rn = agg_route_next(rn)) |
d62a17ae | 752 | if (rn->info) { |
753 | rn->info = NULL; | |
fe08ba7e | 754 | agg_unlock_node(rn); |
d62a17ae | 755 | } |
756 | ||
b0ba762f RW |
757 | /* ripng->enable_if */ |
758 | for (i = 0; i < vector_active(ripng->enable_if); i++) | |
759 | if ((str = vector_slot(ripng->enable_if, i)) != NULL) { | |
d62a17ae | 760 | free(str); |
b0ba762f | 761 | vector_slot(ripng->enable_if, i) = NULL; |
d62a17ae | 762 | } |
a94434b6 | 763 | } |
6b0655a2 | 764 | |
718e3744 | 765 | /* Utility function for looking up passive interface settings. */ |
5c84b9a5 RW |
766 | static int ripng_passive_interface_lookup(struct ripng *ripng, |
767 | const char *ifname) | |
718e3744 | 768 | { |
d62a17ae | 769 | unsigned int i; |
770 | char *str; | |
771 | ||
0c32404f RW |
772 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
773 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) | |
d62a17ae | 774 | if (strcmp(str, ifname) == 0) |
775 | return i; | |
776 | return -1; | |
718e3744 | 777 | } |
778 | ||
d62a17ae | 779 | void ripng_passive_interface_apply(struct interface *ifp) |
718e3744 | 780 | { |
d62a17ae | 781 | int ret; |
782 | struct ripng_interface *ri; | |
5c84b9a5 | 783 | struct ripng *ripng; |
718e3744 | 784 | |
d62a17ae | 785 | ri = ifp->info; |
5c84b9a5 RW |
786 | ripng = ri->ripng; |
787 | if (!ripng) | |
788 | return; | |
718e3744 | 789 | |
5c84b9a5 | 790 | ret = ripng_passive_interface_lookup(ripng, ifp->name); |
d62a17ae | 791 | if (ret < 0) |
792 | ri->passive = 0; | |
793 | else | |
794 | ri->passive = 1; | |
718e3744 | 795 | } |
796 | ||
5c84b9a5 | 797 | static void ripng_passive_interface_apply_all(struct ripng *ripng) |
718e3744 | 798 | { |
d62a17ae | 799 | struct interface *ifp; |
718e3744 | 800 | |
dde7b15b | 801 | FOR_ALL_INTERFACES (ripng->vrf, ifp) |
d62a17ae | 802 | ripng_passive_interface_apply(ifp); |
718e3744 | 803 | } |
804 | ||
805 | /* Passive interface. */ | |
5c84b9a5 | 806 | int ripng_passive_interface_set(struct ripng *ripng, const char *ifname) |
718e3744 | 807 | { |
5c84b9a5 | 808 | if (ripng_passive_interface_lookup(ripng, ifname) >= 0) |
22e8c7ae | 809 | return NB_ERR_INCONSISTENCY; |
718e3744 | 810 | |
0c32404f | 811 | vector_set(ripng->passive_interface, strdup(ifname)); |
718e3744 | 812 | |
5c84b9a5 | 813 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 814 | |
22e8c7ae | 815 | return NB_OK; |
718e3744 | 816 | } |
817 | ||
5c84b9a5 | 818 | int ripng_passive_interface_unset(struct ripng *ripng, const char *ifname) |
718e3744 | 819 | { |
d62a17ae | 820 | int i; |
821 | char *str; | |
718e3744 | 822 | |
5c84b9a5 | 823 | i = ripng_passive_interface_lookup(ripng, ifname); |
d62a17ae | 824 | if (i < 0) |
22e8c7ae | 825 | return NB_ERR_INCONSISTENCY; |
718e3744 | 826 | |
0c32404f | 827 | str = vector_slot(ripng->passive_interface, i); |
d62a17ae | 828 | free(str); |
0c32404f | 829 | vector_unset(ripng->passive_interface, i); |
718e3744 | 830 | |
5c84b9a5 | 831 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 832 | |
22e8c7ae | 833 | return NB_OK; |
718e3744 | 834 | } |
835 | ||
836 | /* Free all configured RIP passive-interface settings. */ | |
5c84b9a5 | 837 | void ripng_passive_interface_clean(struct ripng *ripng) |
718e3744 | 838 | { |
d62a17ae | 839 | unsigned int i; |
840 | char *str; | |
841 | ||
0c32404f RW |
842 | for (i = 0; i < vector_active(ripng->passive_interface); i++) |
843 | if ((str = vector_slot(ripng->passive_interface, i)) != NULL) { | |
d62a17ae | 844 | free(str); |
0c32404f | 845 | vector_slot(ripng->passive_interface, i) = NULL; |
d62a17ae | 846 | } |
5c84b9a5 | 847 | ripng_passive_interface_apply_all(ripng); |
718e3744 | 848 | } |
849 | ||
850 | /* Write RIPng enable network and interface to the vty. */ | |
5c84b9a5 | 851 | int ripng_network_write(struct vty *vty, struct ripng *ripng) |
718e3744 | 852 | { |
d62a17ae | 853 | unsigned int i; |
854 | const char *ifname; | |
fe08ba7e | 855 | struct agg_node *node; |
d62a17ae | 856 | |
857 | /* Write enable network. */ | |
29b94d58 | 858 | for (node = agg_route_top(ripng->enable_network); node; |
fe08ba7e | 859 | node = agg_route_next(node)) |
26a3ffd6 DS |
860 | if (node->info) |
861 | vty_out(vty, " %pRN\n", node); | |
d62a17ae | 862 | |
863 | /* Write enable interface. */ | |
b0ba762f RW |
864 | for (i = 0; i < vector_active(ripng->enable_if); i++) |
865 | if ((ifname = vector_slot(ripng->enable_if, i)) != NULL) | |
22e8c7ae | 866 | vty_out(vty, " %s\n", ifname); |
d62a17ae | 867 | |
868 | return 0; | |
718e3744 | 869 | } |
870 | ||
d62a17ae | 871 | static struct ripng_interface *ri_new(void) |
718e3744 | 872 | { |
d62a17ae | 873 | struct ripng_interface *ri; |
5c84b9a5 | 874 | |
eaf58ba9 | 875 | ri = XCALLOC(MTYPE_RIPNG_IF, sizeof(struct ripng_interface)); |
a94434b6 | 876 | |
d62a17ae | 877 | /* Set default split-horizon behavior. If the interface is Frame |
878 | Relay or SMDS is enabled, the default value for split-horizon is | |
879 | off. But currently Zebra does detect Frame Relay or SMDS | |
880 | interface. So all interface is set to split horizon. */ | |
d406db4c RW |
881 | ri->split_horizon = |
882 | yang_get_default_enum("%s/split-horizon", RIPNG_IFACE); | |
a94434b6 | 883 | |
d62a17ae | 884 | return ri; |
718e3744 | 885 | } |
886 | ||
dde7b15b RW |
887 | void ripng_interface_sync(struct interface *ifp) |
888 | { | |
096f7609 | 889 | struct ripng_interface *ri; |
dde7b15b | 890 | |
096f7609 IR |
891 | ri = ifp->info; |
892 | if (ri) | |
893 | ri->ripng = ifp->vrf->info; | |
dde7b15b RW |
894 | } |
895 | ||
d62a17ae | 896 | static int ripng_if_new_hook(struct interface *ifp) |
718e3744 | 897 | { |
d62a17ae | 898 | ifp->info = ri_new(); |
dde7b15b RW |
899 | ripng_interface_sync(ifp); |
900 | ||
d62a17ae | 901 | return 0; |
718e3744 | 902 | } |
903 | ||
a94434b6 | 904 | /* Called when interface structure deleted. */ |
d62a17ae | 905 | static int ripng_if_delete_hook(struct interface *ifp) |
a94434b6 | 906 | { |
eaf58ba9 | 907 | XFREE(MTYPE_RIPNG_IF, ifp->info); |
d62a17ae | 908 | return 0; |
a94434b6 | 909 | } |
910 | ||
718e3744 | 911 | /* Initialization of interface. */ |
4d762f26 | 912 | void ripng_if_init(void) |
718e3744 | 913 | { |
d62a17ae | 914 | /* Interface initialize. */ |
ce19a04a DL |
915 | hook_register_prio(if_add, 0, ripng_if_new_hook); |
916 | hook_register_prio(if_del, 0, ripng_if_delete_hook); | |
718e3744 | 917 | |
d62a17ae | 918 | /* Install interface node. */ |
104fd767 | 919 | if_cmd_init_default(); |
138c5a74 DS |
920 | if_zapi_callbacks(ripng_ifp_create, ripng_ifp_up, |
921 | ripng_ifp_down, ripng_ifp_destroy); | |
718e3744 | 922 | } |