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718e3744 | 1 | /* Interface related function for RIP. |
2 | * Copyright (C) 1997, 98 Kunihiro Ishiguro <kunihiro@zebra.org> | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
23 | #include "command.h" | |
24 | #include "if.h" | |
25 | #include "sockunion.h" | |
26 | #include "prefix.h" | |
27 | #include "memory.h" | |
28 | #include "network.h" | |
29 | #include "table.h" | |
30 | #include "log.h" | |
31 | #include "stream.h" | |
32 | #include "thread.h" | |
33 | #include "zclient.h" | |
34 | #include "filter.h" | |
35 | #include "sockopt.h" | |
edd7c245 | 36 | #include "privs.h" |
77cbe4a1 | 37 | #include "lib_errors.h" |
f0ab22fb | 38 | #include "northbound_cli.h" |
718e3744 | 39 | |
40 | #include "zebra/connected.h" | |
41 | ||
42 | #include "ripd/ripd.h" | |
43 | #include "ripd/rip_debug.h" | |
dc63bfd4 | 44 | #include "ripd/rip_interface.h" |
6b0655a2 | 45 | |
d62a17ae | 46 | DEFINE_HOOK(rip_ifaddr_add, (struct connected * ifc), (ifc)) |
47 | DEFINE_HOOK(rip_ifaddr_del, (struct connected * ifc), (ifc)) | |
3012671f | 48 | |
dc63bfd4 | 49 | /* static prototypes */ |
d62a17ae | 50 | static void rip_enable_apply(struct interface *); |
51 | static void rip_passive_interface_apply(struct interface *); | |
dc63bfd4 | 52 | static int rip_if_down(struct interface *ifp); |
045c5389 | 53 | static int rip_enable_if_lookup(struct rip *rip, const char *ifname); |
d62a17ae | 54 | static int rip_enable_network_lookup2(struct connected *connected); |
045c5389 | 55 | static void rip_enable_apply_all(struct rip *rip); |
6b0655a2 | 56 | |
d62a17ae | 57 | const struct message ri_version_msg[] = {{RI_RIP_VERSION_1, "1"}, |
58 | {RI_RIP_VERSION_2, "2"}, | |
59 | {RI_RIP_VERSION_1_AND_2, "1 2"}, | |
60 | {RI_RIP_VERSION_NONE, "none"}, | |
61 | {0}}; | |
718e3744 | 62 | |
718e3744 | 63 | /* Join to the RIP version 2 multicast group. */ |
d62a17ae | 64 | static int ipv4_multicast_join(int sock, struct in_addr group, |
65 | struct in_addr ifa, ifindex_t ifindex) | |
718e3744 | 66 | { |
d62a17ae | 67 | int ret; |
718e3744 | 68 | |
d62a17ae | 69 | ret = setsockopt_ipv4_multicast(sock, IP_ADD_MEMBERSHIP, ifa, |
70 | group.s_addr, ifindex); | |
718e3744 | 71 | |
d62a17ae | 72 | if (ret < 0) |
73 | zlog_info("can't setsockopt IP_ADD_MEMBERSHIP %s", | |
74 | safe_strerror(errno)); | |
718e3744 | 75 | |
d62a17ae | 76 | return ret; |
718e3744 | 77 | } |
78 | ||
79 | /* Leave from the RIP version 2 multicast group. */ | |
d62a17ae | 80 | static int ipv4_multicast_leave(int sock, struct in_addr group, |
81 | struct in_addr ifa, ifindex_t ifindex) | |
718e3744 | 82 | { |
d62a17ae | 83 | int ret; |
718e3744 | 84 | |
d62a17ae | 85 | ret = setsockopt_ipv4_multicast(sock, IP_DROP_MEMBERSHIP, ifa, |
86 | group.s_addr, ifindex); | |
718e3744 | 87 | |
d62a17ae | 88 | if (ret < 0) |
89 | zlog_info("can't setsockopt IP_DROP_MEMBERSHIP"); | |
718e3744 | 90 | |
d62a17ae | 91 | return ret; |
718e3744 | 92 | } |
6b0655a2 | 93 | |
d62a17ae | 94 | static void rip_interface_reset(struct rip_interface *); |
1dec2166 | 95 | |
718e3744 | 96 | /* Allocate new RIP's interface configuration. */ |
d62a17ae | 97 | static struct rip_interface *rip_interface_new(void) |
718e3744 | 98 | { |
d62a17ae | 99 | struct rip_interface *ri; |
718e3744 | 100 | |
d62a17ae | 101 | ri = XCALLOC(MTYPE_RIP_INTERFACE, sizeof(struct rip_interface)); |
718e3744 | 102 | |
d62a17ae | 103 | rip_interface_reset(ri); |
718e3744 | 104 | |
d62a17ae | 105 | return ri; |
718e3744 | 106 | } |
107 | ||
d62a17ae | 108 | void rip_interface_multicast_set(int sock, struct connected *connected) |
718e3744 | 109 | { |
d62a17ae | 110 | struct in_addr addr; |
4a3867d0 | 111 | |
d62a17ae | 112 | assert(connected != NULL); |
4a3867d0 | 113 | |
d62a17ae | 114 | addr = CONNECTED_ID(connected)->u.prefix4; |
115 | ||
116 | if (setsockopt_ipv4_multicast_if(sock, addr, connected->ifp->ifindex) | |
117 | < 0) { | |
118 | zlog_warn( | |
119 | "Can't setsockopt IP_MULTICAST_IF on fd %d to " | |
120 | "ifindex %d for interface %s", | |
121 | sock, connected->ifp->ifindex, connected->ifp->name); | |
122 | } | |
4a3867d0 | 123 | |
d62a17ae | 124 | return; |
3fb9cd6e | 125 | } |
718e3744 | 126 | |
127 | /* Send RIP request packet to specified interface. */ | |
d7c0a89a | 128 | static void rip_request_interface_send(struct interface *ifp, uint8_t version) |
718e3744 | 129 | { |
d62a17ae | 130 | struct sockaddr_in to; |
718e3744 | 131 | |
d62a17ae | 132 | /* RIPv2 support multicast. */ |
133 | if (version == RIPv2 && if_is_multicast(ifp)) { | |
718e3744 | 134 | |
d62a17ae | 135 | if (IS_RIP_DEBUG_EVENT) |
136 | zlog_debug("multicast request on %s", ifp->name); | |
718e3744 | 137 | |
d62a17ae | 138 | rip_request_send(NULL, ifp, version, NULL); |
139 | return; | |
140 | } | |
718e3744 | 141 | |
d62a17ae | 142 | /* RIPv1 and non multicast interface. */ |
143 | if (if_is_pointopoint(ifp) || if_is_broadcast(ifp)) { | |
144 | struct listnode *cnode, *cnnode; | |
145 | struct connected *connected; | |
146 | ||
147 | if (IS_RIP_DEBUG_EVENT) | |
148 | zlog_debug("broadcast request to %s", ifp->name); | |
149 | ||
150 | for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, | |
151 | connected)) { | |
2e37ad7f RW |
152 | if (connected->address->family != AF_INET) |
153 | continue; | |
154 | ||
155 | memset(&to, 0, sizeof(struct sockaddr_in)); | |
156 | to.sin_port = htons(RIP_PORT_DEFAULT); | |
157 | if (connected->destination) | |
158 | /* use specified broadcast or peer | |
159 | * destination addr */ | |
160 | to.sin_addr = connected->destination->u.prefix4; | |
161 | else if (connected->address->prefixlen | |
162 | < IPV4_MAX_PREFIXLEN) | |
163 | /* calculate the appropriate broadcast | |
164 | * address */ | |
165 | to.sin_addr.s_addr = ipv4_broadcast_addr( | |
166 | connected->address->u.prefix4.s_addr, | |
167 | connected->address->prefixlen); | |
168 | else | |
169 | /* do not know where to send the packet | |
170 | */ | |
171 | continue; | |
172 | ||
173 | if (IS_RIP_DEBUG_EVENT) | |
174 | zlog_debug("SEND request to %s", | |
175 | inet_ntoa(to.sin_addr)); | |
176 | ||
177 | rip_request_send(&to, ifp, version, connected); | |
d62a17ae | 178 | } |
718e3744 | 179 | } |
718e3744 | 180 | } |
181 | ||
182 | /* This will be executed when interface goes up. */ | |
d62a17ae | 183 | static void rip_request_interface(struct interface *ifp) |
718e3744 | 184 | { |
d62a17ae | 185 | struct rip_interface *ri; |
2e37ad7f | 186 | int vsend; |
718e3744 | 187 | |
d62a17ae | 188 | /* In default ripd doesn't send RIP_REQUEST to the loopback interface. |
189 | */ | |
190 | if (if_is_loopback(ifp)) | |
191 | return; | |
718e3744 | 192 | |
d62a17ae | 193 | /* If interface is down, don't send RIP packet. */ |
194 | if (!if_is_operative(ifp)) | |
195 | return; | |
718e3744 | 196 | |
d62a17ae | 197 | /* Fetch RIP interface information. */ |
198 | ri = ifp->info; | |
718e3744 | 199 | |
d62a17ae | 200 | /* If there is no version configuration in the interface, |
201 | use rip's version setting. */ | |
045c5389 | 202 | vsend = ((ri->ri_send == RI_RIP_UNSPEC) ? ri->rip->version_send |
2e37ad7f RW |
203 | : ri->ri_send); |
204 | if (vsend & RIPv1) | |
205 | rip_request_interface_send(ifp, RIPv1); | |
206 | if (vsend & RIPv2) | |
207 | rip_request_interface_send(ifp, RIPv2); | |
718e3744 | 208 | } |
209 | ||
2c239705 | 210 | #if 0 |
718e3744 | 211 | /* Send RIP request to the neighbor. */ |
dc63bfd4 | 212 | static void |
718e3744 | 213 | rip_request_neighbor (struct in_addr addr) |
214 | { | |
215 | struct sockaddr_in to; | |
216 | ||
217 | memset (&to, 0, sizeof (struct sockaddr_in)); | |
218 | to.sin_port = htons (RIP_PORT_DEFAULT); | |
219 | to.sin_addr = addr; | |
220 | ||
931cd54d | 221 | rip_request_send (&to, NULL, rip->version_send, NULL); |
718e3744 | 222 | } |
223 | ||
224 | /* Request routes at all interfaces. */ | |
dc63bfd4 | 225 | static void |
226 | rip_request_neighbor_all (void) | |
718e3744 | 227 | { |
228 | struct route_node *rp; | |
229 | ||
230 | if (! rip) | |
231 | return; | |
232 | ||
233 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 234 | zlog_debug ("request to the all neighbor"); |
718e3744 | 235 | |
236 | /* Send request to all neighbor. */ | |
237 | for (rp = route_top (rip->neighbor); rp; rp = route_next (rp)) | |
238 | if (rp->info) | |
239 | rip_request_neighbor (rp->p.u.prefix4); | |
240 | } | |
2c239705 | 241 | #endif |
718e3744 | 242 | |
243 | /* Multicast packet receive socket. */ | |
d62a17ae | 244 | static int rip_multicast_join(struct interface *ifp, int sock) |
718e3744 | 245 | { |
d62a17ae | 246 | struct listnode *cnode; |
247 | struct connected *ifc; | |
718e3744 | 248 | |
d62a17ae | 249 | if (if_is_operative(ifp) && if_is_multicast(ifp)) { |
250 | if (IS_RIP_DEBUG_EVENT) | |
251 | zlog_debug("multicast join at %s", ifp->name); | |
718e3744 | 252 | |
d62a17ae | 253 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, ifc)) { |
254 | struct prefix_ipv4 *p; | |
255 | struct in_addr group; | |
256 | ||
257 | p = (struct prefix_ipv4 *)ifc->address; | |
258 | ||
259 | if (p->family != AF_INET) | |
260 | continue; | |
261 | ||
262 | group.s_addr = htonl(INADDR_RIP_GROUP); | |
263 | if (ipv4_multicast_join(sock, group, p->prefix, | |
264 | ifp->ifindex) | |
265 | < 0) | |
266 | return -1; | |
267 | else | |
268 | return 0; | |
269 | } | |
718e3744 | 270 | } |
d62a17ae | 271 | return 0; |
718e3744 | 272 | } |
273 | ||
274 | /* Leave from multicast group. */ | |
d62a17ae | 275 | static void rip_multicast_leave(struct interface *ifp, int sock) |
718e3744 | 276 | { |
d62a17ae | 277 | struct listnode *cnode; |
278 | struct connected *connected; | |
718e3744 | 279 | |
d62a17ae | 280 | if (if_is_up(ifp) && if_is_multicast(ifp)) { |
281 | if (IS_RIP_DEBUG_EVENT) | |
282 | zlog_debug("multicast leave from %s", ifp->name); | |
718e3744 | 283 | |
d62a17ae | 284 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { |
285 | struct prefix_ipv4 *p; | |
286 | struct in_addr group; | |
287 | ||
288 | p = (struct prefix_ipv4 *)connected->address; | |
289 | ||
290 | if (p->family != AF_INET) | |
291 | continue; | |
292 | ||
293 | group.s_addr = htonl(INADDR_RIP_GROUP); | |
294 | if (ipv4_multicast_leave(sock, group, p->prefix, | |
295 | ifp->ifindex) | |
296 | == 0) | |
297 | return; | |
298 | } | |
299 | } | |
718e3744 | 300 | } |
301 | ||
302 | /* Is there and address on interface that I could use ? */ | |
d62a17ae | 303 | static int rip_if_ipv4_address_check(struct interface *ifp) |
718e3744 | 304 | { |
d62a17ae | 305 | struct listnode *nn; |
306 | struct connected *connected; | |
307 | int count = 0; | |
718e3744 | 308 | |
d62a17ae | 309 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, nn, connected)) { |
310 | struct prefix *p; | |
718e3744 | 311 | |
d62a17ae | 312 | p = connected->address; |
313 | ||
314 | if (p->family == AF_INET) | |
315 | count++; | |
316 | } | |
718e3744 | 317 | |
d62a17ae | 318 | return count; |
718e3744 | 319 | } |
d62a17ae | 320 | |
31a476c7 | 321 | |
322 | /* Does this address belongs to me ? */ | |
045c5389 | 323 | int if_check_address(struct rip *rip, struct in_addr addr) |
d62a17ae | 324 | { |
d62a17ae | 325 | struct interface *ifp; |
31a476c7 | 326 | |
ae7b826a | 327 | FOR_ALL_INTERFACES (rip->vrf, ifp) { |
d62a17ae | 328 | struct listnode *cnode; |
329 | struct connected *connected; | |
31a476c7 | 330 | |
d62a17ae | 331 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) { |
332 | struct prefix_ipv4 *p; | |
31a476c7 | 333 | |
d62a17ae | 334 | p = (struct prefix_ipv4 *)connected->address; |
335 | ||
336 | if (p->family != AF_INET) | |
337 | continue; | |
338 | ||
339 | if (IPV4_ADDR_CMP(&p->prefix, &addr) == 0) | |
340 | return 1; | |
341 | } | |
31a476c7 | 342 | } |
d62a17ae | 343 | return 0; |
31a476c7 | 344 | } |
345 | ||
718e3744 | 346 | /* Inteface link down message processing. */ |
121f9dee | 347 | int rip_interface_down(ZAPI_CALLBACK_ARGS) |
718e3744 | 348 | { |
d62a17ae | 349 | struct interface *ifp; |
350 | struct stream *s; | |
718e3744 | 351 | |
d62a17ae | 352 | s = zclient->ibuf; |
718e3744 | 353 | |
d62a17ae | 354 | /* zebra_interface_state_read() updates interface structure in |
355 | iflist. */ | |
356 | ifp = zebra_interface_state_read(s, vrf_id); | |
718e3744 | 357 | |
d62a17ae | 358 | if (ifp == NULL) |
359 | return 0; | |
718e3744 | 360 | |
ae7b826a | 361 | rip_interface_sync(ifp); |
d62a17ae | 362 | rip_if_down(ifp); |
718e3744 | 363 | |
d62a17ae | 364 | if (IS_RIP_DEBUG_ZEBRA) |
365 | zlog_debug( | |
ae7b826a RW |
366 | "interface %s vrf %u index %d flags %llx metric %d mtu %d is down", |
367 | ifp->name, ifp->vrf_id, ifp->ifindex, | |
368 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu); | |
d62a17ae | 369 | |
370 | return 0; | |
718e3744 | 371 | } |
372 | ||
373 | /* Inteface link up message processing */ | |
121f9dee | 374 | int rip_interface_up(ZAPI_CALLBACK_ARGS) |
718e3744 | 375 | { |
d62a17ae | 376 | struct interface *ifp; |
377 | ||
378 | /* zebra_interface_state_read () updates interface structure in | |
379 | iflist. */ | |
380 | ifp = zebra_interface_state_read(zclient->ibuf, vrf_id); | |
718e3744 | 381 | |
d62a17ae | 382 | if (ifp == NULL) |
383 | return 0; | |
718e3744 | 384 | |
d62a17ae | 385 | if (IS_RIP_DEBUG_ZEBRA) |
386 | zlog_debug( | |
ae7b826a RW |
387 | "interface %s vrf %u index %d flags %#llx metric %d mtu %d is up", |
388 | ifp->name, ifp->vrf_id, ifp->ifindex, | |
389 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu); | |
390 | ||
391 | rip_interface_sync(ifp); | |
718e3744 | 392 | |
d62a17ae | 393 | /* Check if this interface is RIP enabled or not.*/ |
394 | rip_enable_apply(ifp); | |
718e3744 | 395 | |
d62a17ae | 396 | /* Check for a passive interface */ |
397 | rip_passive_interface_apply(ifp); | |
718e3744 | 398 | |
d62a17ae | 399 | /* Apply distribute list to the all interface. */ |
400 | rip_distribute_update_interface(ifp); | |
718e3744 | 401 | |
d62a17ae | 402 | return 0; |
718e3744 | 403 | } |
404 | ||
405 | /* Inteface addition message from zebra. */ | |
121f9dee | 406 | int rip_interface_add(ZAPI_CALLBACK_ARGS) |
718e3744 | 407 | { |
d62a17ae | 408 | struct interface *ifp; |
718e3744 | 409 | |
d62a17ae | 410 | ifp = zebra_interface_add_read(zclient->ibuf, vrf_id); |
ae7b826a | 411 | rip_interface_sync(ifp); |
718e3744 | 412 | |
d62a17ae | 413 | if (IS_RIP_DEBUG_ZEBRA) |
414 | zlog_debug( | |
ae7b826a RW |
415 | "interface add %s vrf %u index %d flags %#llx metric %d mtu %d", |
416 | ifp->name, ifp->vrf_id, ifp->ifindex, | |
417 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu); | |
718e3744 | 418 | |
d62a17ae | 419 | /* Check if this interface is RIP enabled or not.*/ |
420 | rip_enable_apply(ifp); | |
718e3744 | 421 | |
d62a17ae | 422 | /* Check for a passive interface */ |
423 | rip_passive_interface_apply(ifp); | |
718e3744 | 424 | |
d62a17ae | 425 | /* Apply distribute list to the all interface. */ |
426 | rip_distribute_update_interface(ifp); | |
718e3744 | 427 | |
d62a17ae | 428 | /* rip_request_neighbor_all (); */ |
16705130 | 429 | |
d62a17ae | 430 | /* Check interface routemap. */ |
431 | rip_if_rmap_update_interface(ifp); | |
432 | ||
433 | return 0; | |
718e3744 | 434 | } |
435 | ||
121f9dee | 436 | int rip_interface_delete(ZAPI_CALLBACK_ARGS) |
718e3744 | 437 | { |
d62a17ae | 438 | struct interface *ifp; |
439 | struct stream *s; | |
440 | ||
718e3744 | 441 | |
d62a17ae | 442 | s = zclient->ibuf; |
443 | /* zebra_interface_state_read() updates interface structure in iflist */ | |
444 | ifp = zebra_interface_state_read(s, vrf_id); | |
718e3744 | 445 | |
d62a17ae | 446 | if (ifp == NULL) |
447 | return 0; | |
448 | ||
ae7b826a | 449 | rip_interface_sync(ifp); |
d62a17ae | 450 | if (if_is_up(ifp)) { |
451 | rip_if_down(ifp); | |
452 | } | |
718e3744 | 453 | |
ae7b826a RW |
454 | zlog_info( |
455 | "interface delete %s vrf %u index %d flags %#llx metric %d mtu %d", | |
456 | ifp->name, ifp->vrf_id, ifp->ifindex, | |
457 | (unsigned long long)ifp->flags, ifp->metric, ifp->mtu); | |
718e3744 | 458 | |
d62a17ae | 459 | /* To support pseudo interface do not free interface structure. */ |
460 | /* if_delete(ifp); */ | |
ff880b78 | 461 | if_set_index(ifp, IFINDEX_INTERNAL); |
718e3744 | 462 | |
d62a17ae | 463 | return 0; |
718e3744 | 464 | } |
465 | ||
ae7b826a | 466 | /* VRF update for an interface. */ |
121f9dee | 467 | int rip_interface_vrf_update(ZAPI_CALLBACK_ARGS) |
ae7b826a RW |
468 | { |
469 | struct interface *ifp; | |
470 | vrf_id_t new_vrf_id; | |
471 | ||
472 | ifp = zebra_interface_vrf_update_read(zclient->ibuf, vrf_id, | |
473 | &new_vrf_id); | |
474 | if (!ifp) | |
475 | return 0; | |
476 | ||
477 | if (IS_RIP_DEBUG_ZEBRA) | |
478 | zlog_debug("interface %s VRF change vrf_id %u new vrf id %u", | |
479 | ifp->name, vrf_id, new_vrf_id); | |
480 | ||
481 | if_update_to_new_vrf(ifp, new_vrf_id); | |
482 | rip_interface_sync(ifp); | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
d62a17ae | 487 | static void rip_interface_clean(struct rip_interface *ri) |
4305dfd1 | 488 | { |
d62a17ae | 489 | ri->enable_network = 0; |
490 | ri->enable_interface = 0; | |
491 | ri->running = 0; | |
718e3744 | 492 | |
d62a17ae | 493 | if (ri->t_wakeup) { |
494 | thread_cancel(ri->t_wakeup); | |
495 | ri->t_wakeup = NULL; | |
496 | } | |
4305dfd1 | 497 | } |
718e3744 | 498 | |
045c5389 | 499 | void rip_interfaces_clean(struct rip *rip) |
718e3744 | 500 | { |
d62a17ae | 501 | struct interface *ifp; |
718e3744 | 502 | |
ae7b826a | 503 | FOR_ALL_INTERFACES (rip->vrf, ifp) |
d62a17ae | 504 | rip_interface_clean(ifp->info); |
1dec2166 | 505 | } |
718e3744 | 506 | |
d62a17ae | 507 | static void rip_interface_reset(struct rip_interface *ri) |
4305dfd1 | 508 | { |
94b117b2 RW |
509 | ri->auth_type = yang_get_default_enum("%s/authentication-scheme/mode", |
510 | RIP_IFACE); | |
511 | ri->md5_auth_len = yang_get_default_enum( | |
512 | "%s/authentication-scheme/md5-auth-length", RIP_IFACE); | |
718e3744 | 513 | |
d62a17ae | 514 | /* Set default split-horizon behavior. If the interface is Frame |
515 | Relay or SMDS is enabled, the default value for split-horizon is | |
516 | off. But currently Zebra does detect Frame Relay or SMDS | |
517 | interface. So all interface is set to split horizon. */ | |
94b117b2 RW |
518 | ri->split_horizon = |
519 | yang_get_default_enum("%s/split-horizon", RIP_IFACE); | |
718e3744 | 520 | |
94b117b2 RW |
521 | ri->ri_send = yang_get_default_enum("%s/version-send", RIP_IFACE); |
522 | ri->ri_receive = yang_get_default_enum("%s/version-receive", RIP_IFACE); | |
523 | ri->v2_broadcast = yang_get_default_bool("%s/v2-broadcast", RIP_IFACE); | |
f90310cf | 524 | |
0a22ddfb | 525 | XFREE(MTYPE_RIP_INTERFACE_STRING, ri->auth_str); |
03c20031 | 526 | |
0a22ddfb | 527 | XFREE(MTYPE_RIP_INTERFACE_STRING, ri->key_chain); |
03c20031 | 528 | |
d62a17ae | 529 | ri->list[RIP_FILTER_IN] = NULL; |
530 | ri->list[RIP_FILTER_OUT] = NULL; | |
718e3744 | 531 | |
d62a17ae | 532 | ri->prefix[RIP_FILTER_IN] = NULL; |
533 | ri->prefix[RIP_FILTER_OUT] = NULL; | |
718e3744 | 534 | |
d62a17ae | 535 | ri->recv_badpackets = 0; |
536 | ri->recv_badroutes = 0; | |
537 | ri->sent_updates = 0; | |
4305dfd1 | 538 | |
d62a17ae | 539 | ri->passive = 0; |
718e3744 | 540 | |
d62a17ae | 541 | rip_interface_clean(ri); |
4305dfd1 | 542 | } |
718e3744 | 543 | |
d62a17ae | 544 | int rip_if_down(struct interface *ifp) |
718e3744 | 545 | { |
045c5389 | 546 | struct rip *rip; |
d62a17ae | 547 | struct route_node *rp; |
548 | struct rip_info *rinfo; | |
549 | struct rip_interface *ri = NULL; | |
550 | struct list *list = NULL; | |
551 | struct listnode *listnode = NULL, *nextnode = NULL; | |
045c5389 RW |
552 | |
553 | ri = ifp->info; | |
554 | rip = ri->rip; | |
d62a17ae | 555 | if (rip) { |
556 | for (rp = route_top(rip->table); rp; rp = route_next(rp)) | |
557 | if ((list = rp->info) != NULL) | |
558 | for (ALL_LIST_ELEMENTS(list, listnode, nextnode, | |
559 | rinfo)) | |
dd127197 | 560 | if (rinfo->nh.ifindex == ifp->ifindex) |
045c5389 | 561 | rip_ecmp_delete(rip, rinfo); |
d62a17ae | 562 | |
563 | if (ri->running) { | |
564 | if (IS_RIP_DEBUG_EVENT) | |
565 | zlog_debug("turn off %s", ifp->name); | |
566 | ||
567 | /* Leave from multicast group. */ | |
568 | rip_multicast_leave(ifp, rip->sock); | |
569 | ||
570 | ri->running = 0; | |
571 | } | |
572 | } | |
573 | ||
574 | return 0; | |
718e3744 | 575 | } |
576 | ||
d62a17ae | 577 | static void rip_apply_address_add(struct connected *ifc) |
dc63bfd4 | 578 | { |
045c5389 RW |
579 | struct rip_interface *ri = ifc->ifp->info; |
580 | struct rip *rip = ri->rip; | |
d62a17ae | 581 | struct prefix_ipv4 address; |
3f5682c8 | 582 | struct nexthop nh; |
d62a17ae | 583 | struct prefix *p; |
16705130 | 584 | |
d62a17ae | 585 | if (!rip) |
586 | return; | |
16705130 | 587 | |
d62a17ae | 588 | if (!if_is_up(ifc->ifp)) |
589 | return; | |
16705130 | 590 | |
d62a17ae | 591 | p = ifc->address; |
16705130 | 592 | |
d62a17ae | 593 | memset(&address, 0, sizeof(address)); |
3f5682c8 DS |
594 | memset(&nh, 0, sizeof(nh)); |
595 | ||
d62a17ae | 596 | address.family = p->family; |
597 | address.prefix = p->u.prefix4; | |
598 | address.prefixlen = p->prefixlen; | |
599 | apply_mask_ipv4(&address); | |
16705130 | 600 | |
3f5682c8 DS |
601 | nh.ifindex = ifc->ifp->ifindex; |
602 | nh.type = NEXTHOP_TYPE_IFINDEX; | |
603 | ||
d62a17ae | 604 | /* Check if this interface is RIP enabled or not |
605 | or Check if this address's prefix is RIP enabled */ | |
045c5389 | 606 | if ((rip_enable_if_lookup(rip, ifc->ifp->name) >= 0) |
d62a17ae | 607 | || (rip_enable_network_lookup2(ifc) >= 0)) |
045c5389 RW |
608 | rip_redistribute_add(rip, ZEBRA_ROUTE_CONNECT, |
609 | RIP_ROUTE_INTERFACE, &address, &nh, 0, 0, | |
610 | 0); | |
16705130 | 611 | } |
612 | ||
121f9dee | 613 | int rip_interface_address_add(ZAPI_CALLBACK_ARGS) |
718e3744 | 614 | { |
d62a17ae | 615 | struct connected *ifc; |
616 | struct prefix *p; | |
718e3744 | 617 | |
d62a17ae | 618 | ifc = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, |
619 | zclient->ibuf, vrf_id); | |
718e3744 | 620 | |
d62a17ae | 621 | if (ifc == NULL) |
622 | return 0; | |
718e3744 | 623 | |
d62a17ae | 624 | p = ifc->address; |
718e3744 | 625 | |
d62a17ae | 626 | if (p->family == AF_INET) { |
627 | if (IS_RIP_DEBUG_ZEBRA) | |
628 | zlog_debug("connected address %s/%d is added", | |
629 | inet_ntoa(p->u.prefix4), p->prefixlen); | |
16705130 | 630 | |
d62a17ae | 631 | rip_enable_apply(ifc->ifp); |
632 | /* Check if this prefix needs to be redistributed */ | |
633 | rip_apply_address_add(ifc); | |
718e3744 | 634 | |
d62a17ae | 635 | hook_call(rip_ifaddr_add, ifc); |
636 | } | |
718e3744 | 637 | |
d62a17ae | 638 | return 0; |
718e3744 | 639 | } |
640 | ||
d62a17ae | 641 | static void rip_apply_address_del(struct connected *ifc) |
642 | { | |
045c5389 RW |
643 | struct rip_interface *ri = ifc->ifp->info; |
644 | struct rip *rip = ri->rip; | |
d62a17ae | 645 | struct prefix_ipv4 address; |
646 | struct prefix *p; | |
16705130 | 647 | |
d62a17ae | 648 | if (!rip) |
649 | return; | |
16705130 | 650 | |
d62a17ae | 651 | if (!if_is_up(ifc->ifp)) |
652 | return; | |
16705130 | 653 | |
d62a17ae | 654 | p = ifc->address; |
16705130 | 655 | |
d62a17ae | 656 | memset(&address, 0, sizeof(address)); |
657 | address.family = p->family; | |
658 | address.prefix = p->u.prefix4; | |
659 | address.prefixlen = p->prefixlen; | |
660 | apply_mask_ipv4(&address); | |
16705130 | 661 | |
045c5389 | 662 | rip_redistribute_delete(rip, ZEBRA_ROUTE_CONNECT, RIP_ROUTE_INTERFACE, |
d62a17ae | 663 | &address, ifc->ifp->ifindex); |
16705130 | 664 | } |
665 | ||
121f9dee | 666 | int rip_interface_address_delete(ZAPI_CALLBACK_ARGS) |
718e3744 | 667 | { |
d62a17ae | 668 | struct connected *ifc; |
669 | struct prefix *p; | |
718e3744 | 670 | |
d62a17ae | 671 | ifc = zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, |
672 | zclient->ibuf, vrf_id); | |
718e3744 | 673 | |
d62a17ae | 674 | if (ifc) { |
675 | p = ifc->address; | |
676 | if (p->family == AF_INET) { | |
677 | if (IS_RIP_DEBUG_ZEBRA) | |
678 | zlog_debug("connected address %s/%d is deleted", | |
679 | inet_ntoa(p->u.prefix4), | |
680 | p->prefixlen); | |
16705130 | 681 | |
d62a17ae | 682 | hook_call(rip_ifaddr_del, ifc); |
718e3744 | 683 | |
d62a17ae | 684 | /* Chech wether this prefix needs to be removed */ |
685 | rip_apply_address_del(ifc); | |
686 | } | |
718e3744 | 687 | |
d62a17ae | 688 | connected_free(ifc); |
689 | } | |
718e3744 | 690 | |
d62a17ae | 691 | return 0; |
718e3744 | 692 | } |
6b0655a2 | 693 | |
718e3744 | 694 | /* Check interface is enabled by network statement. */ |
16705130 | 695 | /* Check wether the interface has at least a connected prefix that |
696 | * is within the ripng_enable_network table. */ | |
d62a17ae | 697 | static int rip_enable_network_lookup_if(struct interface *ifp) |
698 | { | |
045c5389 RW |
699 | struct rip_interface *ri = ifp->info; |
700 | struct rip *rip = ri->rip; | |
d62a17ae | 701 | struct listnode *node, *nnode; |
702 | struct connected *connected; | |
703 | struct prefix_ipv4 address; | |
704 | ||
1205fdc4 RW |
705 | if (!rip) |
706 | return -1; | |
707 | ||
d62a17ae | 708 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, connected)) { |
709 | struct prefix *p; | |
dc7204b7 | 710 | struct route_node *n; |
d62a17ae | 711 | |
712 | p = connected->address; | |
713 | ||
714 | if (p->family == AF_INET) { | |
715 | address.family = AF_INET; | |
716 | address.prefix = p->u.prefix4; | |
717 | address.prefixlen = IPV4_MAX_BITLEN; | |
718 | ||
1205fdc4 | 719 | n = route_node_match(rip->enable_network, |
dc7204b7 A |
720 | (struct prefix *)&address); |
721 | if (n) { | |
722 | route_unlock_node(n); | |
d62a17ae | 723 | return 1; |
724 | } | |
725 | } | |
726 | } | |
727 | return -1; | |
718e3744 | 728 | } |
729 | ||
16705130 | 730 | /* Check wether connected is within the ripng_enable_network table. */ |
045c5389 | 731 | static int rip_enable_network_lookup2(struct connected *connected) |
16705130 | 732 | { |
045c5389 RW |
733 | struct rip_interface *ri = connected->ifp->info; |
734 | struct rip *rip = ri->rip; | |
d62a17ae | 735 | struct prefix_ipv4 address; |
736 | struct prefix *p; | |
16705130 | 737 | |
d62a17ae | 738 | p = connected->address; |
16705130 | 739 | |
d62a17ae | 740 | if (p->family == AF_INET) { |
741 | struct route_node *node; | |
16705130 | 742 | |
d62a17ae | 743 | address.family = p->family; |
744 | address.prefix = p->u.prefix4; | |
745 | address.prefixlen = IPV4_MAX_BITLEN; | |
16705130 | 746 | |
d62a17ae | 747 | /* LPM on p->family, p->u.prefix4/IPV4_MAX_BITLEN within |
1205fdc4 RW |
748 | * rip->enable_network */ |
749 | node = route_node_match(rip->enable_network, | |
d62a17ae | 750 | (struct prefix *)&address); |
16705130 | 751 | |
d62a17ae | 752 | if (node) { |
753 | route_unlock_node(node); | |
754 | return 1; | |
755 | } | |
756 | } | |
16705130 | 757 | |
d62a17ae | 758 | return -1; |
16705130 | 759 | } |
718e3744 | 760 | /* Add RIP enable network. */ |
045c5389 | 761 | int rip_enable_network_add(struct rip *rip, struct prefix *p) |
718e3744 | 762 | { |
d62a17ae | 763 | struct route_node *node; |
718e3744 | 764 | |
1205fdc4 | 765 | node = route_node_get(rip->enable_network, p); |
718e3744 | 766 | |
d62a17ae | 767 | if (node->info) { |
768 | route_unlock_node(node); | |
3d7a1be8 | 769 | return NB_ERR_INCONSISTENCY; |
d62a17ae | 770 | } else |
771 | node->info = (void *)1; | |
718e3744 | 772 | |
d62a17ae | 773 | /* XXX: One should find a better solution than a generic one */ |
045c5389 | 774 | rip_enable_apply_all(rip); |
16705130 | 775 | |
3d7a1be8 | 776 | return NB_OK; |
718e3744 | 777 | } |
778 | ||
779 | /* Delete RIP enable network. */ | |
045c5389 | 780 | int rip_enable_network_delete(struct rip *rip, struct prefix *p) |
718e3744 | 781 | { |
d62a17ae | 782 | struct route_node *node; |
718e3744 | 783 | |
1205fdc4 | 784 | node = route_node_lookup(rip->enable_network, p); |
d62a17ae | 785 | if (node) { |
786 | node->info = NULL; | |
718e3744 | 787 | |
d62a17ae | 788 | /* Unlock info lock. */ |
789 | route_unlock_node(node); | |
718e3744 | 790 | |
d62a17ae | 791 | /* Unlock lookup lock. */ |
792 | route_unlock_node(node); | |
718e3744 | 793 | |
d62a17ae | 794 | /* XXX: One should find a better solution than a generic one */ |
045c5389 | 795 | rip_enable_apply_all(rip); |
16705130 | 796 | |
3d7a1be8 | 797 | return NB_OK; |
d62a17ae | 798 | } |
3d7a1be8 RW |
799 | |
800 | return NB_ERR_INCONSISTENCY; | |
718e3744 | 801 | } |
802 | ||
803 | /* Check interface is enabled by ifname statement. */ | |
045c5389 | 804 | static int rip_enable_if_lookup(struct rip *rip, const char *ifname) |
718e3744 | 805 | { |
d62a17ae | 806 | unsigned int i; |
807 | char *str; | |
718e3744 | 808 | |
ca046902 RW |
809 | if (!rip) |
810 | return -1; | |
811 | ||
812 | for (i = 0; i < vector_active(rip->enable_interface); i++) | |
813 | if ((str = vector_slot(rip->enable_interface, i)) != NULL) | |
d62a17ae | 814 | if (strcmp(str, ifname) == 0) |
815 | return i; | |
816 | return -1; | |
718e3744 | 817 | } |
818 | ||
819 | /* Add interface to rip_enable_if. */ | |
045c5389 | 820 | int rip_enable_if_add(struct rip *rip, const char *ifname) |
718e3744 | 821 | { |
d62a17ae | 822 | int ret; |
718e3744 | 823 | |
045c5389 | 824 | ret = rip_enable_if_lookup(rip, ifname); |
d62a17ae | 825 | if (ret >= 0) |
3d7a1be8 | 826 | return NB_ERR_INCONSISTENCY; |
718e3744 | 827 | |
ca046902 | 828 | vector_set(rip->enable_interface, |
03c20031 | 829 | XSTRDUP(MTYPE_RIP_INTERFACE_STRING, ifname)); |
718e3744 | 830 | |
045c5389 | 831 | rip_enable_apply_all(rip); /* TODOVJ */ |
16705130 | 832 | |
3d7a1be8 | 833 | return NB_OK; |
718e3744 | 834 | } |
835 | ||
836 | /* Delete interface from rip_enable_if. */ | |
045c5389 | 837 | int rip_enable_if_delete(struct rip *rip, const char *ifname) |
718e3744 | 838 | { |
d62a17ae | 839 | int index; |
840 | char *str; | |
718e3744 | 841 | |
045c5389 | 842 | index = rip_enable_if_lookup(rip, ifname); |
d62a17ae | 843 | if (index < 0) |
3d7a1be8 | 844 | return NB_ERR_INCONSISTENCY; |
718e3744 | 845 | |
ca046902 | 846 | str = vector_slot(rip->enable_interface, index); |
03c20031 | 847 | XFREE(MTYPE_RIP_INTERFACE_STRING, str); |
ca046902 | 848 | vector_unset(rip->enable_interface, index); |
718e3744 | 849 | |
045c5389 | 850 | rip_enable_apply_all(rip); /* TODOVJ */ |
16705130 | 851 | |
3d7a1be8 | 852 | return NB_OK; |
718e3744 | 853 | } |
854 | ||
855 | /* Join to multicast group and send request to the interface. */ | |
d62a17ae | 856 | static int rip_interface_wakeup(struct thread *t) |
718e3744 | 857 | { |
d62a17ae | 858 | struct interface *ifp; |
859 | struct rip_interface *ri; | |
718e3744 | 860 | |
d62a17ae | 861 | /* Get interface. */ |
862 | ifp = THREAD_ARG(t); | |
718e3744 | 863 | |
d62a17ae | 864 | ri = ifp->info; |
865 | ri->t_wakeup = NULL; | |
718e3744 | 866 | |
d62a17ae | 867 | /* Join to multicast group. */ |
045c5389 | 868 | if (rip_multicast_join(ifp, ri->rip->sock) < 0) { |
450971aa | 869 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
870 | "multicast join failed, interface %s not running", |
871 | ifp->name); | |
d62a17ae | 872 | return 0; |
873 | } | |
718e3744 | 874 | |
d62a17ae | 875 | /* Set running flag. */ |
876 | ri->running = 1; | |
877 | ||
878 | /* Send RIP request to the interface. */ | |
879 | rip_request_interface(ifp); | |
880 | ||
881 | return 0; | |
882 | } | |
883 | ||
884 | static void rip_connect_set(struct interface *ifp, int set) | |
885 | { | |
045c5389 RW |
886 | struct rip_interface *ri = ifp->info; |
887 | struct rip *rip = ri->rip; | |
d62a17ae | 888 | struct listnode *node, *nnode; |
889 | struct connected *connected; | |
890 | struct prefix_ipv4 address; | |
3f5682c8 DS |
891 | struct nexthop nh; |
892 | ||
893 | memset(&nh, 0, sizeof(nh)); | |
d62a17ae | 894 | |
895 | for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, connected)) { | |
896 | struct prefix *p; | |
897 | p = connected->address; | |
898 | ||
899 | if (p->family != AF_INET) | |
900 | continue; | |
901 | ||
902 | address.family = AF_INET; | |
903 | address.prefix = p->u.prefix4; | |
904 | address.prefixlen = p->prefixlen; | |
905 | apply_mask_ipv4(&address); | |
906 | ||
3f5682c8 DS |
907 | nh.ifindex = connected->ifp->ifindex; |
908 | nh.type = NEXTHOP_TYPE_IFINDEX; | |
d62a17ae | 909 | if (set) { |
910 | /* Check once more wether this prefix is within a | |
911 | * "network IF_OR_PREF" one */ | |
045c5389 RW |
912 | if ((rip_enable_if_lookup(rip, connected->ifp->name) |
913 | >= 0) | |
d62a17ae | 914 | || (rip_enable_network_lookup2(connected) >= 0)) |
045c5389 | 915 | rip_redistribute_add(rip, ZEBRA_ROUTE_CONNECT, |
996c9314 LB |
916 | RIP_ROUTE_INTERFACE, |
917 | &address, &nh, 0, 0, 0); | |
d62a17ae | 918 | } else { |
045c5389 | 919 | rip_redistribute_delete(rip, ZEBRA_ROUTE_CONNECT, |
d62a17ae | 920 | RIP_ROUTE_INTERFACE, &address, |
921 | connected->ifp->ifindex); | |
045c5389 RW |
922 | if (rip_redistribute_check(rip, ZEBRA_ROUTE_CONNECT)) |
923 | rip_redistribute_add(rip, ZEBRA_ROUTE_CONNECT, | |
996c9314 LB |
924 | RIP_ROUTE_REDISTRIBUTE, |
925 | &address, &nh, 0, 0, 0); | |
d62a17ae | 926 | } |
927 | } | |
718e3744 | 928 | } |
929 | ||
930 | /* Update interface status. */ | |
d62a17ae | 931 | void rip_enable_apply(struct interface *ifp) |
718e3744 | 932 | { |
d62a17ae | 933 | int ret; |
934 | struct rip_interface *ri = NULL; | |
718e3744 | 935 | |
d62a17ae | 936 | /* Check interface. */ |
937 | if (!if_is_operative(ifp)) | |
938 | return; | |
718e3744 | 939 | |
d62a17ae | 940 | ri = ifp->info; |
941 | ||
942 | /* Check network configuration. */ | |
943 | ret = rip_enable_network_lookup_if(ifp); | |
944 | ||
945 | /* If the interface is matched. */ | |
946 | if (ret > 0) | |
947 | ri->enable_network = 1; | |
948 | else | |
949 | ri->enable_network = 0; | |
950 | ||
951 | /* Check interface name configuration. */ | |
045c5389 | 952 | ret = rip_enable_if_lookup(ri->rip, ifp->name); |
d62a17ae | 953 | if (ret >= 0) |
954 | ri->enable_interface = 1; | |
955 | else | |
956 | ri->enable_interface = 0; | |
718e3744 | 957 | |
d62a17ae | 958 | /* any interface MUST have an IPv4 address */ |
959 | if (!rip_if_ipv4_address_check(ifp)) { | |
960 | ri->enable_network = 0; | |
961 | ri->enable_interface = 0; | |
718e3744 | 962 | } |
718e3744 | 963 | |
d62a17ae | 964 | /* Update running status of the interface. */ |
965 | if (ri->enable_network || ri->enable_interface) { | |
2e37ad7f RW |
966 | if (IS_RIP_DEBUG_EVENT) |
967 | zlog_debug("turn on %s", ifp->name); | |
968 | ||
969 | /* Add interface wake up thread. */ | |
970 | thread_add_timer(master, rip_interface_wakeup, ifp, 1, | |
971 | &ri->t_wakeup); | |
972 | rip_connect_set(ifp, 1); | |
973 | } else if (ri->running) { | |
974 | /* Might as well clean up the route table as well | |
975 | * rip_if_down sets to 0 ri->running, and displays "turn | |
976 | *off %s" | |
977 | **/ | |
978 | rip_if_down(ifp); | |
d62a17ae | 979 | |
2e37ad7f | 980 | rip_connect_set(ifp, 0); |
718e3744 | 981 | } |
718e3744 | 982 | } |
983 | ||
984 | /* Apply network configuration to all interface. */ | |
045c5389 | 985 | static void rip_enable_apply_all(struct rip *rip) |
718e3744 | 986 | { |
d62a17ae | 987 | struct interface *ifp; |
718e3744 | 988 | |
d62a17ae | 989 | /* Check each interface. */ |
ae7b826a | 990 | FOR_ALL_INTERFACES (rip->vrf, ifp) |
d62a17ae | 991 | rip_enable_apply(ifp); |
718e3744 | 992 | } |
993 | ||
045c5389 | 994 | int rip_neighbor_lookup(struct rip *rip, struct sockaddr_in *from) |
718e3744 | 995 | { |
d62a17ae | 996 | struct prefix_ipv4 p; |
997 | struct route_node *node; | |
718e3744 | 998 | |
d62a17ae | 999 | memset(&p, 0, sizeof(struct prefix_ipv4)); |
1000 | p.family = AF_INET; | |
1001 | p.prefix = from->sin_addr; | |
1002 | p.prefixlen = IPV4_MAX_BITLEN; | |
718e3744 | 1003 | |
d62a17ae | 1004 | node = route_node_lookup(rip->neighbor, (struct prefix *)&p); |
1005 | if (node) { | |
1006 | route_unlock_node(node); | |
1007 | return 1; | |
1008 | } | |
1009 | return 0; | |
718e3744 | 1010 | } |
1011 | ||
1012 | /* Add new RIP neighbor to the neighbor tree. */ | |
045c5389 | 1013 | int rip_neighbor_add(struct rip *rip, struct prefix_ipv4 *p) |
718e3744 | 1014 | { |
d62a17ae | 1015 | struct route_node *node; |
718e3744 | 1016 | |
d62a17ae | 1017 | node = route_node_get(rip->neighbor, (struct prefix *)p); |
718e3744 | 1018 | |
d62a17ae | 1019 | if (node->info) |
f0ab22fb | 1020 | return NB_ERR_INCONSISTENCY; |
718e3744 | 1021 | |
d62a17ae | 1022 | node->info = rip->neighbor; |
718e3744 | 1023 | |
f0ab22fb | 1024 | return NB_OK; |
718e3744 | 1025 | } |
1026 | ||
1027 | /* Delete RIP neighbor from the neighbor tree. */ | |
045c5389 | 1028 | int rip_neighbor_delete(struct rip *rip, struct prefix_ipv4 *p) |
718e3744 | 1029 | { |
d62a17ae | 1030 | struct route_node *node; |
718e3744 | 1031 | |
d62a17ae | 1032 | /* Lock for look up. */ |
1033 | node = route_node_lookup(rip->neighbor, (struct prefix *)p); | |
1034 | if (!node) | |
f0ab22fb | 1035 | return NB_ERR_INCONSISTENCY; |
718e3744 | 1036 | |
d62a17ae | 1037 | node->info = NULL; |
718e3744 | 1038 | |
d62a17ae | 1039 | /* Unlock lookup lock. */ |
1040 | route_unlock_node(node); | |
718e3744 | 1041 | |
d62a17ae | 1042 | /* Unlock real neighbor information lock. */ |
1043 | route_unlock_node(node); | |
1044 | ||
f0ab22fb | 1045 | return NB_OK; |
718e3744 | 1046 | } |
1047 | ||
1048 | /* Clear all network and neighbor configuration. */ | |
045c5389 | 1049 | void rip_clean_network(struct rip *rip) |
d62a17ae | 1050 | { |
1051 | unsigned int i; | |
1052 | char *str; | |
1053 | struct route_node *rn; | |
1054 | ||
1205fdc4 RW |
1055 | /* rip->enable_network. */ |
1056 | for (rn = route_top(rip->enable_network); rn; rn = route_next(rn)) | |
d62a17ae | 1057 | if (rn->info) { |
1058 | rn->info = NULL; | |
1059 | route_unlock_node(rn); | |
1060 | } | |
1061 | ||
ca046902 RW |
1062 | /* rip->enable_interface. */ |
1063 | for (i = 0; i < vector_active(rip->enable_interface); i++) | |
1064 | if ((str = vector_slot(rip->enable_interface, i)) != NULL) { | |
03c20031 | 1065 | XFREE(MTYPE_RIP_INTERFACE_STRING, str); |
ca046902 | 1066 | vector_slot(rip->enable_interface, i) = NULL; |
d62a17ae | 1067 | } |
718e3744 | 1068 | } |
6b0655a2 | 1069 | |
718e3744 | 1070 | /* Utility function for looking up passive interface settings. */ |
045c5389 | 1071 | static int rip_passive_nondefault_lookup(struct rip *rip, const char *ifname) |
718e3744 | 1072 | { |
d62a17ae | 1073 | unsigned int i; |
1074 | char *str; | |
718e3744 | 1075 | |
5a29c0d5 RW |
1076 | for (i = 0; i < vector_active(rip->passive_nondefault); i++) |
1077 | if ((str = vector_slot(rip->passive_nondefault, i)) != NULL) | |
d62a17ae | 1078 | if (strcmp(str, ifname) == 0) |
1079 | return i; | |
1080 | return -1; | |
718e3744 | 1081 | } |
1082 | ||
045c5389 | 1083 | static void rip_passive_interface_apply(struct interface *ifp) |
718e3744 | 1084 | { |
045c5389 | 1085 | struct rip *rip; |
d62a17ae | 1086 | struct rip_interface *ri; |
718e3744 | 1087 | |
045c5389 RW |
1088 | ri = ifp->info; |
1089 | rip = ri->rip; | |
44f2f852 RW |
1090 | if (rip == NULL) |
1091 | return; | |
1092 | ||
045c5389 | 1093 | ri->passive = ((rip_passive_nondefault_lookup(rip, ifp->name) < 0) |
44f2f852 RW |
1094 | ? rip->passive_default |
1095 | : !rip->passive_default); | |
4aaff3f8 | 1096 | |
d62a17ae | 1097 | if (IS_RIP_DEBUG_ZEBRA) |
1098 | zlog_debug("interface %s: passive = %d", ifp->name, | |
1099 | ri->passive); | |
718e3744 | 1100 | } |
1101 | ||
045c5389 | 1102 | static void rip_passive_interface_apply_all(struct rip *rip) |
718e3744 | 1103 | { |
d62a17ae | 1104 | struct interface *ifp; |
718e3744 | 1105 | |
ae7b826a | 1106 | FOR_ALL_INTERFACES (rip->vrf, ifp) |
d62a17ae | 1107 | rip_passive_interface_apply(ifp); |
718e3744 | 1108 | } |
1109 | ||
1110 | /* Passive interface. */ | |
045c5389 | 1111 | int rip_passive_nondefault_set(struct rip *rip, const char *ifname) |
718e3744 | 1112 | { |
045c5389 | 1113 | if (rip_passive_nondefault_lookup(rip, ifname) >= 0) |
44f2f852 RW |
1114 | /* |
1115 | * Don't return an error, this can happen after changing | |
1116 | * 'passive-default'. | |
1117 | */ | |
1118 | return NB_OK; | |
718e3744 | 1119 | |
5a29c0d5 | 1120 | vector_set(rip->passive_nondefault, |
03c20031 | 1121 | XSTRDUP(MTYPE_RIP_INTERFACE_STRING, ifname)); |
718e3744 | 1122 | |
045c5389 | 1123 | rip_passive_interface_apply_all(rip); |
718e3744 | 1124 | |
44f2f852 | 1125 | return NB_OK; |
718e3744 | 1126 | } |
1127 | ||
045c5389 | 1128 | int rip_passive_nondefault_unset(struct rip *rip, const char *ifname) |
718e3744 | 1129 | { |
d62a17ae | 1130 | int i; |
1131 | char *str; | |
718e3744 | 1132 | |
045c5389 | 1133 | i = rip_passive_nondefault_lookup(rip, ifname); |
d62a17ae | 1134 | if (i < 0) |
44f2f852 RW |
1135 | /* |
1136 | * Don't return an error, this can happen after changing | |
1137 | * 'passive-default'. | |
1138 | */ | |
1139 | return NB_OK; | |
718e3744 | 1140 | |
5a29c0d5 | 1141 | str = vector_slot(rip->passive_nondefault, i); |
03c20031 | 1142 | XFREE(MTYPE_RIP_INTERFACE_STRING, str); |
5a29c0d5 | 1143 | vector_unset(rip->passive_nondefault, i); |
718e3744 | 1144 | |
045c5389 | 1145 | rip_passive_interface_apply_all(rip); |
718e3744 | 1146 | |
44f2f852 | 1147 | return NB_OK; |
718e3744 | 1148 | } |
1149 | ||
1150 | /* Free all configured RIP passive-interface settings. */ | |
045c5389 | 1151 | void rip_passive_nondefault_clean(struct rip *rip) |
718e3744 | 1152 | { |
d62a17ae | 1153 | unsigned int i; |
1154 | char *str; | |
718e3744 | 1155 | |
5a29c0d5 RW |
1156 | for (i = 0; i < vector_active(rip->passive_nondefault); i++) |
1157 | if ((str = vector_slot(rip->passive_nondefault, i)) != NULL) { | |
03c20031 | 1158 | XFREE(MTYPE_RIP_INTERFACE_STRING, str); |
5a29c0d5 | 1159 | vector_slot(rip->passive_nondefault, i) = NULL; |
d62a17ae | 1160 | } |
045c5389 | 1161 | rip_passive_interface_apply_all(rip); |
718e3744 | 1162 | } |
6b0655a2 | 1163 | |
718e3744 | 1164 | /* Write rip configuration of each interface. */ |
d62a17ae | 1165 | static int rip_interface_config_write(struct vty *vty) |
1166 | { | |
ae7b826a | 1167 | struct vrf *vrf; |
94b117b2 | 1168 | int write = 0; |
d62a17ae | 1169 | |
ae7b826a RW |
1170 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { |
1171 | struct interface *ifp; | |
d62a17ae | 1172 | |
ae7b826a RW |
1173 | FOR_ALL_INTERFACES (vrf, ifp) { |
1174 | struct lyd_node *dnode; | |
1175 | ||
1176 | dnode = yang_dnode_get( | |
1177 | running_config->dnode, | |
1178 | "/frr-interface:lib/interface[name='%s'][vrf='%s']", | |
1179 | ifp->name, vrf->name); | |
1180 | if (dnode == NULL) | |
1181 | continue; | |
d62a17ae | 1182 | |
ae7b826a RW |
1183 | write = 1; |
1184 | nb_cli_show_dnode_cmds(vty, dnode, false); | |
1185 | } | |
d62a17ae | 1186 | } |
94b117b2 RW |
1187 | |
1188 | return write; | |
d62a17ae | 1189 | } |
1190 | ||
045c5389 | 1191 | int rip_show_network_config(struct vty *vty, struct rip *rip) |
d62a17ae | 1192 | { |
1193 | unsigned int i; | |
1194 | char *ifname; | |
1195 | struct route_node *node; | |
1196 | ||
1197 | /* Network type RIP enable interface statement. */ | |
1205fdc4 | 1198 | for (node = route_top(rip->enable_network); node; |
d62a17ae | 1199 | node = route_next(node)) |
1200 | if (node->info) | |
44f2f852 | 1201 | vty_out(vty, " %s/%u\n", |
d62a17ae | 1202 | inet_ntoa(node->p.u.prefix4), |
1203 | node->p.prefixlen); | |
1204 | ||
1205 | /* Interface name RIP enable statement. */ | |
ca046902 RW |
1206 | for (i = 0; i < vector_active(rip->enable_interface); i++) |
1207 | if ((ifname = vector_slot(rip->enable_interface, i)) != NULL) | |
44f2f852 | 1208 | vty_out(vty, " %s\n", ifname); |
d62a17ae | 1209 | |
1210 | /* RIP neighbors listing. */ | |
1211 | for (node = route_top(rip->neighbor); node; node = route_next(node)) | |
1212 | if (node->info) | |
44f2f852 | 1213 | vty_out(vty, " %s\n", inet_ntoa(node->p.u.prefix4)); |
718e3744 | 1214 | |
d62a17ae | 1215 | return 0; |
1216 | } | |
1217 | ||
1218 | static struct cmd_node interface_node = { | |
9d303b37 | 1219 | INTERFACE_NODE, "%s(config-if)# ", 1, |
718e3744 | 1220 | }; |
1221 | ||
ae7b826a RW |
1222 | void rip_interface_sync(struct interface *ifp) |
1223 | { | |
1224 | struct vrf *vrf; | |
1225 | ||
1226 | vrf = vrf_lookup_by_id(ifp->vrf_id); | |
1227 | if (vrf) { | |
1228 | struct rip_interface *ri; | |
1229 | ||
1230 | ri = ifp->info; | |
1231 | if (ri) | |
1232 | ri->rip = vrf->info; | |
1233 | } | |
1234 | } | |
1235 | ||
718e3744 | 1236 | /* Called when interface structure allocated. */ |
d62a17ae | 1237 | static int rip_interface_new_hook(struct interface *ifp) |
718e3744 | 1238 | { |
d62a17ae | 1239 | ifp->info = rip_interface_new(); |
ae7b826a RW |
1240 | rip_interface_sync(ifp); |
1241 | ||
d62a17ae | 1242 | return 0; |
718e3744 | 1243 | } |
1244 | ||
1245 | /* Called when interface structure deleted. */ | |
d62a17ae | 1246 | static int rip_interface_delete_hook(struct interface *ifp) |
718e3744 | 1247 | { |
72010aca | 1248 | rip_interface_reset(ifp->info); |
d62a17ae | 1249 | XFREE(MTYPE_RIP_INTERFACE, ifp->info); |
1250 | ifp->info = NULL; | |
1251 | return 0; | |
718e3744 | 1252 | } |
1253 | ||
1254 | /* Allocate and initialize interface vector. */ | |
d62a17ae | 1255 | void rip_if_init(void) |
718e3744 | 1256 | { |
d62a17ae | 1257 | /* Default initial size of interface vector. */ |
ce19a04a DL |
1258 | hook_register_prio(if_add, 0, rip_interface_new_hook); |
1259 | hook_register_prio(if_del, 0, rip_interface_delete_hook); | |
d62a17ae | 1260 | |
d62a17ae | 1261 | /* Install interface node. */ |
1262 | install_node(&interface_node, rip_interface_config_write); | |
1263 | if_cmd_init(); | |
718e3744 | 1264 | } |