| 718e3744 |
1 | /* Routing Information Base. |
| 2 | * Copyright (C) 1997, 98, 99, 2001 Kunihiro Ishiguro |
| 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 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with GNU Zebra; see the file COPYING. If not, write to the Free |
| 18 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
| 19 | * 02111-1307, USA. |
| 20 | */ |
| 21 | |
| 22 | #include <zebra.h> |
| 23 | |
| 24 | #include "prefix.h" |
| 25 | #include "table.h" |
| 26 | #include "memory.h" |
| 27 | #include "str.h" |
| 28 | #include "command.h" |
| 29 | #include "if.h" |
| 30 | #include "log.h" |
| 31 | #include "sockunion.h" |
| 32 | |
| 33 | #include "zebra/rib.h" |
| 34 | #include "zebra/rt.h" |
| 35 | #include "zebra/zserv.h" |
| 36 | #include "zebra/redistribute.h" |
| 37 | #include "zebra/debug.h" |
| 38 | |
| 39 | /* Default rtm_table for all clients */ |
| b21b19c5 |
40 | extern struct zebra_t zebrad; |
| 718e3744 |
41 | |
| 42 | /* Each route type's string and default distance value. */ |
| 43 | struct |
| 44 | { |
| 45 | int key; |
| 46 | int distance; |
| 47 | } route_info[] = |
| 48 | { |
| 49 | {ZEBRA_ROUTE_SYSTEM, 0}, |
| 50 | {ZEBRA_ROUTE_KERNEL, 0}, |
| 51 | {ZEBRA_ROUTE_CONNECT, 0}, |
| 52 | {ZEBRA_ROUTE_STATIC, 1}, |
| 53 | {ZEBRA_ROUTE_RIP, 120}, |
| 54 | {ZEBRA_ROUTE_RIPNG, 120}, |
| 55 | {ZEBRA_ROUTE_OSPF, 110}, |
| 56 | {ZEBRA_ROUTE_OSPF6, 110}, |
| 9e867fe6 |
57 | {ZEBRA_ROUTE_ISIS, 115}, |
| 718e3744 |
58 | {ZEBRA_ROUTE_BGP, 20 /* IBGP is 200. */} |
| 59 | }; |
| 60 | \f |
| 61 | /* Vector for routing table. */ |
| 62 | vector vrf_vector; |
| 63 | |
| 64 | /* Allocate new VRF. */ |
| 65 | struct vrf * |
| fce954f8 |
66 | vrf_alloc (const char *name) |
| 718e3744 |
67 | { |
| 68 | struct vrf *vrf; |
| 69 | |
| 70 | vrf = XCALLOC (MTYPE_VRF, sizeof (struct vrf)); |
| 71 | |
| 72 | /* Put name. */ |
| 73 | if (name) |
| 74 | vrf->name = XSTRDUP (MTYPE_VRF_NAME, name); |
| 75 | |
| 76 | /* Allocate routing table and static table. */ |
| 77 | vrf->table[AFI_IP][SAFI_UNICAST] = route_table_init (); |
| 78 | vrf->table[AFI_IP6][SAFI_UNICAST] = route_table_init (); |
| 79 | vrf->stable[AFI_IP][SAFI_UNICAST] = route_table_init (); |
| 80 | vrf->stable[AFI_IP6][SAFI_UNICAST] = route_table_init (); |
| 81 | |
| 82 | return vrf; |
| 83 | } |
| 84 | |
| 85 | /* Free VRF. */ |
| 86 | void |
| 87 | vrf_free (struct vrf *vrf) |
| 88 | { |
| 89 | if (vrf->name) |
| 90 | XFREE (MTYPE_VRF_NAME, vrf->name); |
| 91 | XFREE (MTYPE_VRF, vrf); |
| 92 | } |
| 93 | |
| 94 | /* Lookup VRF by identifier. */ |
| 95 | struct vrf * |
| 96 | vrf_lookup (u_int32_t id) |
| 97 | { |
| 98 | return vector_lookup (vrf_vector, id); |
| 99 | } |
| 100 | |
| 101 | /* Lookup VRF by name. */ |
| 102 | struct vrf * |
| 103 | vrf_lookup_by_name (char *name) |
| 104 | { |
| fce954f8 |
105 | unsigned int i; |
| 718e3744 |
106 | struct vrf *vrf; |
| 107 | |
| 55468c86 |
108 | for (i = 0; i < vector_active (vrf_vector); i++) |
| 718e3744 |
109 | if ((vrf = vector_slot (vrf_vector, i)) != NULL) |
| 110 | if (vrf->name && name && strcmp (vrf->name, name) == 0) |
| 111 | return vrf; |
| 112 | return NULL; |
| 113 | } |
| 114 | |
| 115 | /* Initialize VRF. */ |
| 116 | void |
| 117 | vrf_init () |
| 118 | { |
| 119 | struct vrf *default_table; |
| 120 | |
| 121 | /* Allocate VRF vector. */ |
| 122 | vrf_vector = vector_init (1); |
| 123 | |
| 124 | /* Allocate default main table. */ |
| 125 | default_table = vrf_alloc ("Default-IP-Routing-Table"); |
| 126 | |
| 127 | /* Default table index must be 0. */ |
| 128 | vector_set_index (vrf_vector, 0, default_table); |
| 129 | } |
| 130 | |
| 131 | /* Lookup route table. */ |
| 132 | struct route_table * |
| 133 | vrf_table (afi_t afi, safi_t safi, u_int32_t id) |
| 134 | { |
| 135 | struct vrf *vrf; |
| 136 | |
| 137 | vrf = vrf_lookup (id); |
| 138 | if (! vrf) |
| 139 | return NULL; |
| 140 | |
| 141 | return vrf->table[afi][safi]; |
| 142 | } |
| 143 | |
| 144 | /* Lookup static route table. */ |
| 145 | struct route_table * |
| 146 | vrf_static_table (afi_t afi, safi_t safi, u_int32_t id) |
| 147 | { |
| 148 | struct vrf *vrf; |
| 149 | |
| 150 | vrf = vrf_lookup (id); |
| 151 | if (! vrf) |
| 152 | return NULL; |
| 153 | |
| 154 | return vrf->stable[afi][safi]; |
| 155 | } |
| 156 | \f |
| 157 | /* Add nexthop to the end of the list. */ |
| 158 | void |
| 159 | nexthop_add (struct rib *rib, struct nexthop *nexthop) |
| 160 | { |
| 161 | struct nexthop *last; |
| 162 | |
| 163 | for (last = rib->nexthop; last && last->next; last = last->next) |
| 164 | ; |
| 165 | if (last) |
| 166 | last->next = nexthop; |
| 167 | else |
| 168 | rib->nexthop = nexthop; |
| 169 | nexthop->prev = last; |
| 170 | |
| 171 | rib->nexthop_num++; |
| 172 | } |
| 173 | |
| 174 | /* Delete specified nexthop from the list. */ |
| 175 | void |
| 176 | nexthop_delete (struct rib *rib, struct nexthop *nexthop) |
| 177 | { |
| 178 | if (nexthop->next) |
| 179 | nexthop->next->prev = nexthop->prev; |
| 180 | if (nexthop->prev) |
| 181 | nexthop->prev->next = nexthop->next; |
| 182 | else |
| 183 | rib->nexthop = nexthop->next; |
| 184 | rib->nexthop_num--; |
| 185 | } |
| 186 | |
| 187 | /* Free nexthop. */ |
| 188 | void |
| 189 | nexthop_free (struct nexthop *nexthop) |
| 190 | { |
| a4b70768 |
191 | if (nexthop->ifname) |
| 192 | XFREE (0, nexthop->ifname); |
| 718e3744 |
193 | XFREE (MTYPE_NEXTHOP, nexthop); |
| 194 | } |
| 195 | |
| 196 | struct nexthop * |
| 197 | nexthop_ifindex_add (struct rib *rib, unsigned int ifindex) |
| 198 | { |
| 199 | struct nexthop *nexthop; |
| 200 | |
| 201 | nexthop = XMALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop)); |
| 202 | memset (nexthop, 0, sizeof (struct nexthop)); |
| 203 | nexthop->type = NEXTHOP_TYPE_IFINDEX; |
| 204 | nexthop->ifindex = ifindex; |
| 205 | |
| 206 | nexthop_add (rib, nexthop); |
| 207 | |
| 208 | return nexthop; |
| 209 | } |
| 210 | |
| 211 | struct nexthop * |
| 212 | nexthop_ifname_add (struct rib *rib, char *ifname) |
| 213 | { |
| 214 | struct nexthop *nexthop; |
| 215 | |
| 216 | nexthop = XMALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop)); |
| 217 | memset (nexthop, 0, sizeof (struct nexthop)); |
| 218 | nexthop->type = NEXTHOP_TYPE_IFNAME; |
| a4b70768 |
219 | nexthop->ifname = XSTRDUP (0, ifname); |
| 718e3744 |
220 | |
| 221 | nexthop_add (rib, nexthop); |
| 222 | |
| 223 | return nexthop; |
| 224 | } |
| 225 | |
| 226 | struct nexthop * |
| 227 | nexthop_ipv4_add (struct rib *rib, struct in_addr *ipv4) |
| 228 | { |
| 229 | struct nexthop *nexthop; |
| 230 | |
| 231 | nexthop = XMALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop)); |
| 232 | memset (nexthop, 0, sizeof (struct nexthop)); |
| 233 | nexthop->type = NEXTHOP_TYPE_IPV4; |
| 234 | nexthop->gate.ipv4 = *ipv4; |
| 235 | |
| 236 | nexthop_add (rib, nexthop); |
| 237 | |
| 238 | return nexthop; |
| 239 | } |
| 240 | |
| 241 | struct nexthop * |
| 242 | nexthop_ipv4_ifindex_add (struct rib *rib, struct in_addr *ipv4, |
| 243 | unsigned int ifindex) |
| 244 | { |
| 245 | struct nexthop *nexthop; |
| 246 | |
| 247 | nexthop = XMALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop)); |
| 248 | memset (nexthop, 0, sizeof (struct nexthop)); |
| 249 | nexthop->type = NEXTHOP_TYPE_IPV4_IFINDEX; |
| 250 | nexthop->gate.ipv4 = *ipv4; |
| 251 | nexthop->ifindex = ifindex; |
| 252 | |
| 253 | nexthop_add (rib, nexthop); |
| 254 | |
| 255 | return nexthop; |
| 256 | } |
| 257 | |
| 258 | #ifdef HAVE_IPV6 |
| 259 | struct nexthop * |
| 260 | nexthop_ipv6_add (struct rib *rib, struct in6_addr *ipv6) |
| 261 | { |
| 262 | struct nexthop *nexthop; |
| 263 | |
| 264 | nexthop = XMALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop)); |
| 265 | memset (nexthop, 0, sizeof (struct nexthop)); |
| 266 | nexthop->type = NEXTHOP_TYPE_IPV6; |
| 267 | nexthop->gate.ipv6 = *ipv6; |
| 268 | |
| 269 | nexthop_add (rib, nexthop); |
| 270 | |
| 271 | return nexthop; |
| 272 | } |
| 273 | |
| 274 | struct nexthop * |
| 275 | nexthop_ipv6_ifname_add (struct rib *rib, struct in6_addr *ipv6, |
| 276 | char *ifname) |
| 277 | { |
| 278 | struct nexthop *nexthop; |
| 279 | |
| 280 | nexthop = XMALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop)); |
| 281 | memset (nexthop, 0, sizeof (struct nexthop)); |
| 282 | nexthop->type = NEXTHOP_TYPE_IPV6_IFNAME; |
| 283 | nexthop->gate.ipv6 = *ipv6; |
| 284 | nexthop->ifname = XSTRDUP (0, ifname); |
| 285 | |
| 286 | nexthop_add (rib, nexthop); |
| 287 | |
| 288 | return nexthop; |
| 289 | } |
| 290 | |
| 291 | struct nexthop * |
| 292 | nexthop_ipv6_ifindex_add (struct rib *rib, struct in6_addr *ipv6, |
| 293 | unsigned int ifindex) |
| 294 | { |
| 295 | struct nexthop *nexthop; |
| 296 | |
| 297 | nexthop = XMALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop)); |
| 298 | memset (nexthop, 0, sizeof (struct nexthop)); |
| 299 | nexthop->type = NEXTHOP_TYPE_IPV6_IFINDEX; |
| 300 | nexthop->gate.ipv6 = *ipv6; |
| 301 | nexthop->ifindex = ifindex; |
| 302 | |
| 303 | nexthop_add (rib, nexthop); |
| 304 | |
| 305 | return nexthop; |
| 306 | } |
| 307 | #endif /* HAVE_IPV6 */ |
| 308 | |
| 595db7f1 |
309 | struct nexthop * |
| 310 | nexthop_blackhole_add (struct rib *rib) |
| 311 | { |
| 312 | struct nexthop *nexthop; |
| 313 | |
| 314 | nexthop = XMALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop)); |
| 315 | memset (nexthop, 0, sizeof (struct nexthop)); |
| 316 | nexthop->type = NEXTHOP_TYPE_BLACKHOLE; |
| 317 | SET_FLAG (rib->flags, ZEBRA_FLAG_BLACKHOLE); |
| 318 | |
| 319 | nexthop_add (rib, nexthop); |
| 320 | |
| 321 | return nexthop; |
| 322 | } |
| 323 | |
| 718e3744 |
324 | /* If force flag is not set, do not modify falgs at all for uninstall |
| 325 | the route from FIB. */ |
| 326 | int |
| 327 | nexthop_active_ipv4 (struct rib *rib, struct nexthop *nexthop, int set, |
| 328 | struct route_node *top) |
| 329 | { |
| 330 | struct prefix_ipv4 p; |
| 331 | struct route_table *table; |
| 332 | struct route_node *rn; |
| 333 | struct rib *match; |
| 334 | struct nexthop *newhop; |
| 335 | |
| 336 | if (nexthop->type == NEXTHOP_TYPE_IPV4) |
| 337 | nexthop->ifindex = 0; |
| 338 | |
| 339 | if (set) |
| 340 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE); |
| 341 | |
| 342 | /* Make lookup prefix. */ |
| 343 | memset (&p, 0, sizeof (struct prefix_ipv4)); |
| 344 | p.family = AF_INET; |
| 345 | p.prefixlen = IPV4_MAX_PREFIXLEN; |
| 346 | p.prefix = nexthop->gate.ipv4; |
| 347 | |
| 348 | /* Lookup table. */ |
| 349 | table = vrf_table (AFI_IP, SAFI_UNICAST, 0); |
| 350 | if (! table) |
| 351 | return 0; |
| 352 | |
| 353 | rn = route_node_match (table, (struct prefix *) &p); |
| 354 | while (rn) |
| 355 | { |
| 356 | route_unlock_node (rn); |
| 357 | |
| 358 | /* If lookup self prefix return immidiately. */ |
| 359 | if (rn == top) |
| 360 | return 0; |
| 361 | |
| 362 | /* Pick up selected route. */ |
| 363 | for (match = rn->info; match; match = match->next) |
| 364 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_SELECTED)) |
| 365 | break; |
| 366 | |
| 367 | /* If there is no selected route or matched route is EGP, go up |
| 368 | tree. */ |
| 369 | if (! match |
| 370 | || match->type == ZEBRA_ROUTE_BGP) |
| 371 | { |
| 372 | do { |
| 373 | rn = rn->parent; |
| 374 | } while (rn && rn->info == NULL); |
| 375 | if (rn) |
| 376 | route_lock_node (rn); |
| 377 | } |
| 378 | else |
| 379 | { |
| 380 | if (match->type == ZEBRA_ROUTE_CONNECT) |
| 381 | { |
| 382 | /* Directly point connected route. */ |
| 383 | newhop = match->nexthop; |
| 384 | if (newhop && nexthop->type == NEXTHOP_TYPE_IPV4) |
| 385 | nexthop->ifindex = newhop->ifindex; |
| 386 | |
| 387 | return 1; |
| 388 | } |
| 389 | else if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_INTERNAL)) |
| 390 | { |
| 391 | for (newhop = match->nexthop; newhop; newhop = newhop->next) |
| 392 | if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB) |
| 393 | && ! CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_RECURSIVE)) |
| 394 | { |
| 395 | if (set) |
| 396 | { |
| 397 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE); |
| 398 | nexthop->rtype = newhop->type; |
| 399 | if (newhop->type == NEXTHOP_TYPE_IPV4 || |
| 400 | newhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) |
| 401 | nexthop->rgate.ipv4 = newhop->gate.ipv4; |
| 402 | if (newhop->type == NEXTHOP_TYPE_IFINDEX |
| 403 | || newhop->type == NEXTHOP_TYPE_IFNAME |
| 404 | || newhop->type == NEXTHOP_TYPE_IPV4_IFINDEX) |
| 405 | nexthop->rifindex = newhop->ifindex; |
| 406 | } |
| 407 | return 1; |
| 408 | } |
| 409 | return 0; |
| 410 | } |
| 411 | else |
| 412 | { |
| 413 | return 0; |
| 414 | } |
| 415 | } |
| 416 | } |
| 417 | return 0; |
| 418 | } |
| 419 | |
| 420 | #ifdef HAVE_IPV6 |
| 421 | /* If force flag is not set, do not modify falgs at all for uninstall |
| 422 | the route from FIB. */ |
| 423 | int |
| 424 | nexthop_active_ipv6 (struct rib *rib, struct nexthop *nexthop, int set, |
| 425 | struct route_node *top) |
| 426 | { |
| 427 | struct prefix_ipv6 p; |
| 428 | struct route_table *table; |
| 429 | struct route_node *rn; |
| 430 | struct rib *match; |
| 431 | struct nexthop *newhop; |
| 432 | |
| 433 | if (nexthop->type == NEXTHOP_TYPE_IPV6) |
| 434 | nexthop->ifindex = 0; |
| 435 | |
| 436 | if (set) |
| 437 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE); |
| 438 | |
| 439 | /* Make lookup prefix. */ |
| 440 | memset (&p, 0, sizeof (struct prefix_ipv6)); |
| 441 | p.family = AF_INET6; |
| 442 | p.prefixlen = IPV6_MAX_PREFIXLEN; |
| 443 | p.prefix = nexthop->gate.ipv6; |
| 444 | |
| 445 | /* Lookup table. */ |
| 446 | table = vrf_table (AFI_IP6, SAFI_UNICAST, 0); |
| 447 | if (! table) |
| 448 | return 0; |
| 449 | |
| 450 | rn = route_node_match (table, (struct prefix *) &p); |
| 451 | while (rn) |
| 452 | { |
| 453 | route_unlock_node (rn); |
| 454 | |
| 455 | /* If lookup self prefix return immidiately. */ |
| 456 | if (rn == top) |
| 457 | return 0; |
| 458 | |
| 459 | /* Pick up selected route. */ |
| 460 | for (match = rn->info; match; match = match->next) |
| 461 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_SELECTED)) |
| 462 | break; |
| 463 | |
| 464 | /* If there is no selected route or matched route is EGP, go up |
| 465 | tree. */ |
| 466 | if (! match |
| 467 | || match->type == ZEBRA_ROUTE_BGP) |
| 468 | { |
| 469 | do { |
| 470 | rn = rn->parent; |
| 471 | } while (rn && rn->info == NULL); |
| 472 | if (rn) |
| 473 | route_lock_node (rn); |
| 474 | } |
| 475 | else |
| 476 | { |
| 477 | if (match->type == ZEBRA_ROUTE_CONNECT) |
| 478 | { |
| 479 | /* Directly point connected route. */ |
| 480 | newhop = match->nexthop; |
| 481 | |
| 482 | if (newhop && nexthop->type == NEXTHOP_TYPE_IPV6) |
| 483 | nexthop->ifindex = newhop->ifindex; |
| 484 | |
| 485 | return 1; |
| 486 | } |
| 487 | else if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_INTERNAL)) |
| 488 | { |
| 489 | for (newhop = match->nexthop; newhop; newhop = newhop->next) |
| 490 | if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB) |
| 491 | && ! CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_RECURSIVE)) |
| 492 | { |
| 493 | if (set) |
| 494 | { |
| 495 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE); |
| 496 | nexthop->rtype = newhop->type; |
| 497 | if (newhop->type == NEXTHOP_TYPE_IPV6 |
| 498 | || newhop->type == NEXTHOP_TYPE_IPV6_IFINDEX |
| 499 | || newhop->type == NEXTHOP_TYPE_IPV6_IFNAME) |
| 500 | nexthop->rgate.ipv6 = newhop->gate.ipv6; |
| 501 | if (newhop->type == NEXTHOP_TYPE_IFINDEX |
| 502 | || newhop->type == NEXTHOP_TYPE_IFNAME |
| 503 | || newhop->type == NEXTHOP_TYPE_IPV6_IFINDEX |
| 504 | || newhop->type == NEXTHOP_TYPE_IPV6_IFNAME) |
| 505 | nexthop->rifindex = newhop->ifindex; |
| 506 | } |
| 507 | return 1; |
| 508 | } |
| 509 | return 0; |
| 510 | } |
| 511 | else |
| 512 | { |
| 513 | return 0; |
| 514 | } |
| 515 | } |
| 516 | } |
| 517 | return 0; |
| 518 | } |
| 519 | #endif /* HAVE_IPV6 */ |
| 520 | |
| 521 | struct rib * |
| 522 | rib_match_ipv4 (struct in_addr addr) |
| 523 | { |
| 524 | struct prefix_ipv4 p; |
| 525 | struct route_table *table; |
| 526 | struct route_node *rn; |
| 527 | struct rib *match; |
| 528 | struct nexthop *newhop; |
| 529 | |
| 530 | /* Lookup table. */ |
| 531 | table = vrf_table (AFI_IP, SAFI_UNICAST, 0); |
| 532 | if (! table) |
| 533 | return 0; |
| 534 | |
| 535 | memset (&p, 0, sizeof (struct prefix_ipv4)); |
| 536 | p.family = AF_INET; |
| 537 | p.prefixlen = IPV4_MAX_PREFIXLEN; |
| 538 | p.prefix = addr; |
| 539 | |
| 540 | rn = route_node_match (table, (struct prefix *) &p); |
| 541 | |
| 542 | while (rn) |
| 543 | { |
| 544 | route_unlock_node (rn); |
| 545 | |
| 546 | /* Pick up selected route. */ |
| 547 | for (match = rn->info; match; match = match->next) |
| 548 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_SELECTED)) |
| 549 | break; |
| 550 | |
| 551 | /* If there is no selected route or matched route is EGP, go up |
| 552 | tree. */ |
| 553 | if (! match |
| 554 | || match->type == ZEBRA_ROUTE_BGP) |
| 555 | { |
| 556 | do { |
| 557 | rn = rn->parent; |
| 558 | } while (rn && rn->info == NULL); |
| 559 | if (rn) |
| 560 | route_lock_node (rn); |
| 561 | } |
| 562 | else |
| 563 | { |
| 564 | if (match->type == ZEBRA_ROUTE_CONNECT) |
| 565 | /* Directly point connected route. */ |
| 566 | return match; |
| 567 | else |
| 568 | { |
| 569 | for (newhop = match->nexthop; newhop; newhop = newhop->next) |
| 570 | if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB)) |
| 571 | return match; |
| 572 | return NULL; |
| 573 | } |
| 574 | } |
| 575 | } |
| 576 | return NULL; |
| 577 | } |
| 578 | |
| 579 | struct rib * |
| 580 | rib_lookup_ipv4 (struct prefix_ipv4 *p) |
| 581 | { |
| 582 | struct route_table *table; |
| 583 | struct route_node *rn; |
| 584 | struct rib *match; |
| 585 | struct nexthop *nexthop; |
| 586 | |
| 587 | /* Lookup table. */ |
| 588 | table = vrf_table (AFI_IP, SAFI_UNICAST, 0); |
| 589 | if (! table) |
| 590 | return 0; |
| 591 | |
| 592 | rn = route_node_lookup (table, (struct prefix *) p); |
| 593 | |
| 594 | /* No route for this prefix. */ |
| 595 | if (! rn) |
| 596 | return NULL; |
| 597 | |
| 598 | /* Unlock node. */ |
| 599 | route_unlock_node (rn); |
| 600 | |
| 601 | /* Pick up selected route. */ |
| 602 | for (match = rn->info; match; match = match->next) |
| 603 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_SELECTED)) |
| 604 | break; |
| 605 | |
| 606 | if (! match || match->type == ZEBRA_ROUTE_BGP) |
| 607 | return NULL; |
| 608 | |
| 609 | if (match->type == ZEBRA_ROUTE_CONNECT) |
| 610 | return match; |
| 611 | |
| 612 | for (nexthop = match->nexthop; nexthop; nexthop = nexthop->next) |
| 613 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)) |
| 614 | return match; |
| 615 | |
| 616 | return NULL; |
| 617 | } |
| 618 | |
| 619 | #ifdef HAVE_IPV6 |
| 620 | struct rib * |
| 621 | rib_match_ipv6 (struct in6_addr *addr) |
| 622 | { |
| 623 | struct prefix_ipv6 p; |
| 624 | struct route_table *table; |
| 625 | struct route_node *rn; |
| 626 | struct rib *match; |
| 627 | struct nexthop *newhop; |
| 628 | |
| 629 | /* Lookup table. */ |
| 630 | table = vrf_table (AFI_IP6, SAFI_UNICAST, 0); |
| 631 | if (! table) |
| 632 | return 0; |
| 633 | |
| 634 | memset (&p, 0, sizeof (struct prefix_ipv6)); |
| 635 | p.family = AF_INET6; |
| 636 | p.prefixlen = IPV6_MAX_PREFIXLEN; |
| 637 | IPV6_ADDR_COPY (&p.prefix, addr); |
| 638 | |
| 639 | rn = route_node_match (table, (struct prefix *) &p); |
| 640 | |
| 641 | while (rn) |
| 642 | { |
| 643 | route_unlock_node (rn); |
| 644 | |
| 645 | /* Pick up selected route. */ |
| 646 | for (match = rn->info; match; match = match->next) |
| 647 | if (CHECK_FLAG (match->flags, ZEBRA_FLAG_SELECTED)) |
| 648 | break; |
| 649 | |
| 650 | /* If there is no selected route or matched route is EGP, go up |
| 651 | tree. */ |
| 652 | if (! match |
| 653 | || match->type == ZEBRA_ROUTE_BGP) |
| 654 | { |
| 655 | do { |
| 656 | rn = rn->parent; |
| 657 | } while (rn && rn->info == NULL); |
| 658 | if (rn) |
| 659 | route_lock_node (rn); |
| 660 | } |
| 661 | else |
| 662 | { |
| 663 | if (match->type == ZEBRA_ROUTE_CONNECT) |
| 664 | /* Directly point connected route. */ |
| 665 | return match; |
| 666 | else |
| 667 | { |
| 668 | for (newhop = match->nexthop; newhop; newhop = newhop->next) |
| 669 | if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB)) |
| 670 | return match; |
| 671 | return NULL; |
| 672 | } |
| 673 | } |
| 674 | } |
| 675 | return NULL; |
| 676 | } |
| 677 | #endif /* HAVE_IPV6 */ |
| 678 | |
| 679 | int |
| 680 | nexthop_active_check (struct route_node *rn, struct rib *rib, |
| 681 | struct nexthop *nexthop, int set) |
| 682 | { |
| 683 | struct interface *ifp; |
| 684 | |
| 685 | switch (nexthop->type) |
| 686 | { |
| 687 | case NEXTHOP_TYPE_IFINDEX: |
| 688 | ifp = if_lookup_by_index (nexthop->ifindex); |
| 689 | if (ifp && if_is_up (ifp)) |
| 690 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 691 | else |
| 692 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 693 | break; |
| 694 | case NEXTHOP_TYPE_IFNAME: |
| 695 | case NEXTHOP_TYPE_IPV6_IFNAME: |
| 696 | ifp = if_lookup_by_name (nexthop->ifname); |
| 697 | if (ifp && if_is_up (ifp)) |
| 698 | { |
| 699 | if (set) |
| 700 | nexthop->ifindex = ifp->ifindex; |
| 701 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 702 | } |
| 703 | else |
| 704 | { |
| 705 | if (set) |
| 706 | nexthop->ifindex = 0; |
| 707 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 708 | } |
| 709 | break; |
| 710 | case NEXTHOP_TYPE_IPV4: |
| 711 | case NEXTHOP_TYPE_IPV4_IFINDEX: |
| 712 | if (nexthop_active_ipv4 (rib, nexthop, set, rn)) |
| 713 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 714 | else |
| 715 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 716 | break; |
| 717 | #ifdef HAVE_IPV6 |
| 718 | case NEXTHOP_TYPE_IPV6: |
| 719 | if (nexthop_active_ipv6 (rib, nexthop, set, rn)) |
| 720 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 721 | else |
| 722 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 723 | break; |
| 724 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
| 725 | if (IN6_IS_ADDR_LINKLOCAL (&nexthop->gate.ipv6)) |
| 726 | { |
| 727 | ifp = if_lookup_by_index (nexthop->ifindex); |
| 728 | if (ifp && if_is_up (ifp)) |
| 729 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 730 | else |
| 731 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 732 | } |
| 733 | else |
| 734 | { |
| 735 | if (nexthop_active_ipv6 (rib, nexthop, set, rn)) |
| 736 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 737 | else |
| 738 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 739 | } |
| 740 | break; |
| 741 | #endif /* HAVE_IPV6 */ |
| 595db7f1 |
742 | case NEXTHOP_TYPE_BLACKHOLE: |
| 743 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 744 | break; |
| 718e3744 |
745 | default: |
| 746 | break; |
| 747 | } |
| 748 | return CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 749 | } |
| 750 | |
| 751 | int |
| 752 | nexthop_active_update (struct route_node *rn, struct rib *rib, int set) |
| 753 | { |
| 754 | struct nexthop *nexthop; |
| 755 | int active; |
| 756 | |
| 757 | rib->nexthop_active_num = 0; |
| 758 | UNSET_FLAG (rib->flags, ZEBRA_FLAG_CHANGED); |
| 759 | |
| 760 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) |
| 761 | { |
| 762 | active = CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE); |
| 6baeb988 |
763 | |
| 764 | nexthop_active_check (rn, rib, nexthop, set); |
| 765 | if ((MULTIPATH_NUM == 0 || rib->nexthop_active_num < MULTIPATH_NUM) |
| 766 | && active != CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE)) |
| 767 | SET_FLAG (rib->flags, ZEBRA_FLAG_CHANGED); |
| 768 | |
| 769 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE)) |
| 770 | rib->nexthop_active_num++; |
| 718e3744 |
771 | } |
| 772 | return rib->nexthop_active_num; |
| 773 | } |
| 6baeb988 |
774 | |
| 718e3744 |
775 | \f |
| 776 | #define RIB_SYSTEM_ROUTE(R) \ |
| 777 | ((R)->type == ZEBRA_ROUTE_KERNEL || (R)->type == ZEBRA_ROUTE_CONNECT) |
| 778 | |
| 779 | void |
| 780 | newrib_free (struct rib *rib) |
| 781 | { |
| 782 | struct nexthop *nexthop; |
| 783 | struct nexthop *next; |
| 784 | |
| 785 | for (nexthop = rib->nexthop; nexthop; nexthop = next) |
| 786 | { |
| 787 | next = nexthop->next; |
| 788 | nexthop_free (nexthop); |
| 789 | } |
| 790 | XFREE (MTYPE_RIB, rib); |
| 791 | } |
| 792 | |
| 793 | void |
| 794 | rib_install_kernel (struct route_node *rn, struct rib *rib) |
| 795 | { |
| 796 | int ret = 0; |
| 797 | struct nexthop *nexthop; |
| 798 | |
| 799 | switch (PREFIX_FAMILY (&rn->p)) |
| 800 | { |
| 801 | case AF_INET: |
| 802 | ret = kernel_add_ipv4 (&rn->p, rib); |
| 803 | break; |
| 804 | #ifdef HAVE_IPV6 |
| 805 | case AF_INET6: |
| 806 | ret = kernel_add_ipv6 (&rn->p, rib); |
| 807 | break; |
| 808 | #endif /* HAVE_IPV6 */ |
| 809 | } |
| 810 | |
| 811 | if (ret < 0) |
| 812 | { |
| 813 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) |
| 814 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | /* Uninstall the route from kernel. */ |
| 819 | int |
| 820 | rib_uninstall_kernel (struct route_node *rn, struct rib *rib) |
| 821 | { |
| 822 | int ret = 0; |
| 823 | struct nexthop *nexthop; |
| 824 | |
| 825 | switch (PREFIX_FAMILY (&rn->p)) |
| 826 | { |
| 827 | case AF_INET: |
| 828 | ret = kernel_delete_ipv4 (&rn->p, rib); |
| 829 | break; |
| 830 | #ifdef HAVE_IPV6 |
| 831 | case AF_INET6: |
| 832 | ret = kernel_delete_ipv6 (&rn->p, rib); |
| 833 | break; |
| 834 | #endif /* HAVE_IPV6 */ |
| 835 | } |
| 836 | |
| 837 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) |
| 838 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); |
| 839 | |
| 840 | return ret; |
| 841 | } |
| 842 | |
| 843 | /* Uninstall the route from kernel. */ |
| 844 | void |
| 845 | rib_uninstall (struct route_node *rn, struct rib *rib) |
| 846 | { |
| 847 | if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)) |
| 848 | { |
| 849 | redistribute_delete (&rn->p, rib); |
| 850 | if (! RIB_SYSTEM_ROUTE (rib)) |
| 851 | rib_uninstall_kernel (rn, rib); |
| 852 | UNSET_FLAG (rib->flags, ZEBRA_FLAG_SELECTED); |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | /* Core function for processing routing information base. */ |
| 857 | void |
| 858 | rib_process (struct route_node *rn, struct rib *del) |
| 859 | { |
| 860 | struct rib *rib; |
| 861 | struct rib *next; |
| 862 | struct rib *fib = NULL; |
| 863 | struct rib *select = NULL; |
| d753e9ee |
864 | int installed = 0; |
| 865 | struct nexthop *nexthop = NULL; |
| 718e3744 |
866 | |
| 867 | for (rib = rn->info; rib; rib = next) |
| 868 | { |
| 869 | next = rib->next; |
| d753e9ee |
870 | |
| 718e3744 |
871 | /* Currently installed rib. */ |
| 872 | if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)) |
| 7021c425 |
873 | fib = rib; |
| 718e3744 |
874 | |
| 875 | /* Skip unreachable nexthop. */ |
| 876 | if (! nexthop_active_update (rn, rib, 0)) |
| 7021c425 |
877 | continue; |
| 718e3744 |
878 | |
| 879 | /* Infinit distance. */ |
| 880 | if (rib->distance == DISTANCE_INFINITY) |
| 7021c425 |
881 | continue; |
| 718e3744 |
882 | |
| 883 | /* Newly selected rib. */ |
| 884 | if (! select || rib->distance < select->distance |
| 7021c425 |
885 | || rib->type == ZEBRA_ROUTE_CONNECT) |
| 886 | select = rib; |
| 718e3744 |
887 | } |
| 888 | |
| 889 | /* Deleted route check. */ |
| 890 | if (del && CHECK_FLAG (del->flags, ZEBRA_FLAG_SELECTED)) |
| 891 | fib = del; |
| 892 | |
| 893 | /* Same route is selected. */ |
| 894 | if (select && select == fib) |
| 895 | { |
| 896 | if (CHECK_FLAG (select->flags, ZEBRA_FLAG_CHANGED)) |
| 897 | { |
| 898 | redistribute_delete (&rn->p, select); |
| 899 | if (! RIB_SYSTEM_ROUTE (select)) |
| 900 | rib_uninstall_kernel (rn, select); |
| 901 | |
| 902 | /* Set real nexthop. */ |
| 903 | nexthop_active_update (rn, select, 1); |
| 904 | |
| 905 | if (! RIB_SYSTEM_ROUTE (select)) |
| 906 | rib_install_kernel (rn, select); |
| 907 | redistribute_add (&rn->p, select); |
| 908 | } |
| d753e9ee |
909 | else if (! RIB_SYSTEM_ROUTE (select)) |
| 910 | { |
| 911 | /* Housekeeping code to deal with |
| 912 | race conditions in kernel with linux |
| 913 | netlink reporting interface up before IPv4 or IPv6 protocol |
| 914 | is ready to add routes. |
| 915 | This makes sure the routes are IN the kernel. |
| 916 | */ |
| 917 | |
| 918 | for (nexthop = select->nexthop; nexthop; nexthop = nexthop->next) |
| 919 | { |
| 920 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)) |
| 921 | installed = 1; |
| 922 | } |
| 923 | if (! installed) rib_install_kernel (rn, select); |
| 924 | } |
| 718e3744 |
925 | return; |
| 926 | } |
| 927 | |
| 928 | /* Uninstall old rib from forwarding table. */ |
| 929 | if (fib) |
| 930 | { |
| 931 | redistribute_delete (&rn->p, fib); |
| 932 | if (! RIB_SYSTEM_ROUTE (fib)) |
| 933 | rib_uninstall_kernel (rn, fib); |
| 934 | UNSET_FLAG (fib->flags, ZEBRA_FLAG_SELECTED); |
| 935 | |
| 936 | /* Set real nexthop. */ |
| 937 | nexthop_active_update (rn, fib, 1); |
| 938 | } |
| 939 | |
| 940 | /* Install new rib into forwarding table. */ |
| 941 | if (select) |
| 942 | { |
| 943 | /* Set real nexthop. */ |
| 944 | nexthop_active_update (rn, select, 1); |
| 945 | |
| 946 | if (! RIB_SYSTEM_ROUTE (select)) |
| 947 | rib_install_kernel (rn, select); |
| 948 | SET_FLAG (select->flags, ZEBRA_FLAG_SELECTED); |
| 949 | redistribute_add (&rn->p, select); |
| 950 | } |
| 951 | } |
| 952 | |
| 953 | /* Add RIB to head of the route node. */ |
| 954 | void |
| 955 | rib_addnode (struct route_node *rn, struct rib *rib) |
| 956 | { |
| 957 | struct rib *head; |
| 958 | |
| 959 | head = rn->info; |
| 960 | if (head) |
| 961 | head->prev = rib; |
| 962 | rib->next = head; |
| 963 | rn->info = rib; |
| 964 | } |
| 965 | |
| 966 | void |
| 967 | rib_delnode (struct route_node *rn, struct rib *rib) |
| 968 | { |
| 969 | if (rib->next) |
| 970 | rib->next->prev = rib->prev; |
| 971 | if (rib->prev) |
| 972 | rib->prev->next = rib->next; |
| 973 | else |
| 974 | rn->info = rib->next; |
| 975 | } |
| 976 | |
| 977 | int |
| 978 | rib_add_ipv4 (int type, int flags, struct prefix_ipv4 *p, |
| 979 | struct in_addr *gate, unsigned int ifindex, u_int32_t vrf_id, |
| 980 | u_int32_t metric, u_char distance) |
| 981 | { |
| 982 | struct rib *rib; |
| 983 | struct rib *same = NULL; |
| 984 | struct route_table *table; |
| 985 | struct route_node *rn; |
| 986 | struct nexthop *nexthop; |
| 987 | |
| 988 | /* Lookup table. */ |
| 989 | table = vrf_table (AFI_IP, SAFI_UNICAST, 0); |
| 990 | if (! table) |
| 991 | return 0; |
| 992 | |
| 993 | /* Make it sure prefixlen is applied to the prefix. */ |
| 994 | apply_mask_ipv4 (p); |
| 995 | |
| 996 | /* Set default distance by route type. */ |
| 997 | if (distance == 0) |
| 998 | { |
| 999 | distance = route_info[type].distance; |
| 1000 | |
| 1001 | /* iBGP distance is 200. */ |
| 1002 | if (type == ZEBRA_ROUTE_BGP && CHECK_FLAG (flags, ZEBRA_FLAG_IBGP)) |
| 1003 | distance = 200; |
| 1004 | } |
| 1005 | |
| 1006 | /* Lookup route node.*/ |
| 1007 | rn = route_node_get (table, (struct prefix *) p); |
| 1008 | |
| 1009 | /* If same type of route are installed, treat it as a implicit |
| 1010 | withdraw. */ |
| 1011 | for (rib = rn->info; rib; rib = rib->next) |
| 1012 | { |
| 1013 | if (rib->type == ZEBRA_ROUTE_CONNECT) |
| 1014 | { |
| 1015 | nexthop = rib->nexthop; |
| 1016 | |
| 1017 | /* Duplicate connected route comes in. */ |
| 1018 | if (rib->type == type |
| 1019 | && nexthop && nexthop->type == NEXTHOP_TYPE_IFINDEX |
| 1020 | && nexthop->ifindex == ifindex) |
| 1021 | { |
| 1022 | rib->refcnt++; |
| 1023 | return 0 ; |
| 1024 | } |
| 1025 | } |
| 1026 | else if (rib->type == type) |
| 1027 | { |
| 1028 | same = rib; |
| 1029 | rib_delnode (rn, same); |
| 1030 | route_unlock_node (rn); |
| 1031 | break; |
| 1032 | } |
| 1033 | } |
| 1034 | |
| 1035 | /* Allocate new rib structure. */ |
| 1036 | rib = XMALLOC (MTYPE_RIB, sizeof (struct rib)); |
| 1037 | memset (rib, 0, sizeof (struct rib)); |
| 1038 | rib->type = type; |
| 1039 | rib->distance = distance; |
| 1040 | rib->flags = flags; |
| 1041 | rib->metric = metric; |
| b5f45021 |
1042 | rib->table = vrf_id; |
| 718e3744 |
1043 | rib->nexthop_num = 0; |
| 1044 | rib->uptime = time (NULL); |
| 1045 | |
| 1046 | /* Nexthop settings. */ |
| 1047 | if (gate) |
| 1048 | { |
| 1049 | if (ifindex) |
| 1050 | nexthop_ipv4_ifindex_add (rib, gate, ifindex); |
| 1051 | else |
| 1052 | nexthop_ipv4_add (rib, gate); |
| 1053 | } |
| 1054 | else |
| 1055 | nexthop_ifindex_add (rib, ifindex); |
| 1056 | |
| 1057 | /* If this route is kernel route, set FIB flag to the route. */ |
| 1058 | if (type == ZEBRA_ROUTE_KERNEL || type == ZEBRA_ROUTE_CONNECT) |
| 1059 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) |
| 1060 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); |
| 1061 | |
| 1062 | /* Link new rib to node.*/ |
| 1063 | rib_addnode (rn, rib); |
| 1064 | |
| 1065 | /* Process this route node. */ |
| 1066 | rib_process (rn, same); |
| 1067 | |
| 1068 | /* Free implicit route.*/ |
| 1069 | if (same) |
| 1070 | newrib_free (same); |
| 1071 | |
| 1072 | return 0; |
| 1073 | } |
| 1074 | |
| 1075 | int |
| 1076 | rib_add_ipv4_multipath (struct prefix_ipv4 *p, struct rib *rib) |
| 1077 | { |
| 1078 | struct route_table *table; |
| 1079 | struct route_node *rn; |
| 1080 | struct rib *same; |
| 1081 | struct nexthop *nexthop; |
| 1082 | |
| 1083 | /* Lookup table. */ |
| 1084 | table = vrf_table (AFI_IP, SAFI_UNICAST, 0); |
| 1085 | if (! table) |
| 1086 | return 0; |
| 1087 | |
| 1088 | /* Make it sure prefixlen is applied to the prefix. */ |
| 1089 | apply_mask_ipv4 (p); |
| 1090 | |
| 1091 | /* Set default distance by route type. */ |
| 1092 | if (rib->distance == 0) |
| 1093 | { |
| 1094 | rib->distance = route_info[rib->type].distance; |
| 1095 | |
| 1096 | /* iBGP distance is 200. */ |
| 1097 | if (rib->type == ZEBRA_ROUTE_BGP |
| 1098 | && CHECK_FLAG (rib->flags, ZEBRA_FLAG_IBGP)) |
| 1099 | rib->distance = 200; |
| 1100 | } |
| 1101 | |
| 1102 | /* Lookup route node.*/ |
| 1103 | rn = route_node_get (table, (struct prefix *) p); |
| 1104 | |
| 1105 | /* If same type of route are installed, treat it as a implicit |
| 1106 | withdraw. */ |
| 1107 | for (same = rn->info; same; same = same->next) |
| 1108 | { |
| 1109 | if (same->type == rib->type && same->table == rib->table |
| 1110 | && same->type != ZEBRA_ROUTE_CONNECT) |
| 1111 | { |
| 1112 | rib_delnode (rn, same); |
| 1113 | route_unlock_node (rn); |
| 1114 | break; |
| 1115 | } |
| 1116 | } |
| 1117 | |
| 1118 | /* If this route is kernel route, set FIB flag to the route. */ |
| 1119 | if (rib->type == ZEBRA_ROUTE_KERNEL || rib->type == ZEBRA_ROUTE_CONNECT) |
| 1120 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) |
| 1121 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); |
| 1122 | |
| 1123 | /* Link new rib to node.*/ |
| 1124 | rib_addnode (rn, rib); |
| 1125 | |
| 1126 | /* Process this route node. */ |
| 1127 | rib_process (rn, same); |
| 1128 | |
| 1129 | /* Free implicit route.*/ |
| 1130 | if (same) |
| 1131 | newrib_free (same); |
| 1132 | |
| 1133 | return 0; |
| 1134 | } |
| 1135 | |
| 1136 | int |
| 1137 | rib_delete_ipv4 (int type, int flags, struct prefix_ipv4 *p, |
| 1138 | struct in_addr *gate, unsigned int ifindex, u_int32_t vrf_id) |
| 1139 | { |
| 1140 | struct route_table *table; |
| 1141 | struct route_node *rn; |
| 1142 | struct rib *rib; |
| 1143 | struct rib *fib = NULL; |
| 1144 | struct rib *same = NULL; |
| 1145 | struct nexthop *nexthop; |
| 1146 | char buf1[BUFSIZ]; |
| 1147 | char buf2[BUFSIZ]; |
| 1148 | |
| 1149 | /* Lookup table. */ |
| 1150 | table = vrf_table (AFI_IP, SAFI_UNICAST, 0); |
| 1151 | if (! table) |
| 1152 | return 0; |
| 1153 | |
| 1154 | /* Apply mask. */ |
| 1155 | apply_mask_ipv4 (p); |
| 1156 | |
| 5ec90d28 |
1157 | if (IS_ZEBRA_DEBUG_KERNEL && gate) |
| b6178002 |
1158 | zlog_debug ("rib_delete_ipv4(): route delete %s/%d via %s ifindex %d", |
| 5ec90d28 |
1159 | inet_ntop (AF_INET, &p->prefix, buf1, BUFSIZ), |
| 1160 | p->prefixlen, |
| 1161 | inet_ntoa (*gate), |
| 1162 | ifindex); |
| 1163 | |
| 718e3744 |
1164 | /* Lookup route node. */ |
| 1165 | rn = route_node_lookup (table, (struct prefix *) p); |
| 1166 | if (! rn) |
| 1167 | { |
| 1168 | if (IS_ZEBRA_DEBUG_KERNEL) |
| 1169 | { |
| 1170 | if (gate) |
| b6178002 |
1171 | zlog_debug ("route %s/%d via %s ifindex %d doesn't exist in rib", |
| 718e3744 |
1172 | inet_ntop (AF_INET, &p->prefix, buf1, BUFSIZ), |
| 1173 | p->prefixlen, |
| 1174 | inet_ntop (AF_INET, gate, buf2, BUFSIZ), |
| 1175 | ifindex); |
| 1176 | else |
| b6178002 |
1177 | zlog_debug ("route %s/%d ifindex %d doesn't exist in rib", |
| 718e3744 |
1178 | inet_ntop (AF_INET, &p->prefix, buf1, BUFSIZ), |
| 1179 | p->prefixlen, |
| 1180 | ifindex); |
| 1181 | } |
| 1182 | return ZEBRA_ERR_RTNOEXIST; |
| 1183 | } |
| 1184 | |
| 1185 | /* Lookup same type route. */ |
| 1186 | for (rib = rn->info; rib; rib = rib->next) |
| 1187 | { |
| 1188 | if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)) |
| 1189 | fib = rib; |
| 1190 | |
| 1191 | if (rib->type == ZEBRA_ROUTE_CONNECT) |
| 1192 | { |
| 1193 | nexthop = rib->nexthop; |
| 1194 | |
| 1195 | if (rib->type == type |
| 1196 | && nexthop && nexthop->type == NEXTHOP_TYPE_IFINDEX |
| 1197 | && nexthop->ifindex == ifindex) |
| 1198 | { |
| 1199 | if (rib->refcnt) |
| 1200 | { |
| 1201 | rib->refcnt--; |
| 1202 | route_unlock_node (rn); |
| 1203 | route_unlock_node (rn); |
| 1204 | return 0; |
| 1205 | } |
| 1206 | same = rib; |
| 1207 | break; |
| 1208 | } |
| 1209 | } |
| 5ec90d28 |
1210 | else if (gate) |
| 1211 | { |
| 1212 | nexthop = rib->nexthop; |
| 1213 | |
| 1214 | /* Make sure that the route found has the same gateway. */ |
| 1215 | if (rib->type == type |
| 1216 | && nexthop && |
| 1217 | (IPV4_ADDR_SAME (&nexthop->gate.ipv4, gate) || |
| 1218 | IPV4_ADDR_SAME (&nexthop->rgate.ipv4, gate)) ) |
| 1219 | { |
| 1220 | same = rib; |
| 1221 | break; |
| 1222 | } |
| 1223 | } |
| 718e3744 |
1224 | else |
| 1225 | { |
| 1226 | if (rib->type == type) |
| 1227 | { |
| 1228 | same = rib; |
| 1229 | break; |
| 1230 | } |
| 1231 | } |
| 1232 | } |
| 1233 | |
| 1234 | /* If same type of route can't be found and this message is from |
| 1235 | kernel. */ |
| 1236 | if (! same) |
| 1237 | { |
| 1238 | if (fib && type == ZEBRA_ROUTE_KERNEL) |
| 1239 | { |
| 1240 | /* Unset flags. */ |
| 1241 | for (nexthop = fib->nexthop; nexthop; nexthop = nexthop->next) |
| 1242 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); |
| 1243 | |
| 1244 | UNSET_FLAG (fib->flags, ZEBRA_FLAG_SELECTED); |
| 1245 | } |
| 1246 | else |
| 1247 | { |
| 1248 | if (IS_ZEBRA_DEBUG_KERNEL) |
| 1249 | { |
| 1250 | if (gate) |
| b6178002 |
1251 | zlog_debug ("route %s/%d via %s ifindex %d type %d doesn't exist in rib", |
| 718e3744 |
1252 | inet_ntop (AF_INET, &p->prefix, buf1, BUFSIZ), |
| 1253 | p->prefixlen, |
| 1254 | inet_ntop (AF_INET, gate, buf2, BUFSIZ), |
| 1255 | ifindex, |
| 1256 | type); |
| 1257 | else |
| b6178002 |
1258 | zlog_debug ("route %s/%d ifindex %d type %d doesn't exist in rib", |
| 718e3744 |
1259 | inet_ntop (AF_INET, &p->prefix, buf1, BUFSIZ), |
| 1260 | p->prefixlen, |
| 1261 | ifindex, |
| 1262 | type); |
| 1263 | } |
| 1264 | route_unlock_node (rn); |
| 1265 | return ZEBRA_ERR_RTNOEXIST; |
| 1266 | } |
| 1267 | } |
| 1268 | |
| 1269 | if (same) |
| 1270 | rib_delnode (rn, same); |
| 1271 | |
| 1272 | /* Process changes. */ |
| 1273 | rib_process (rn, same); |
| 1274 | |
| 1275 | if (same) |
| 1276 | { |
| 1277 | newrib_free (same); |
| 1278 | route_unlock_node (rn); |
| 1279 | } |
| 1280 | |
| 1281 | route_unlock_node (rn); |
| 1282 | |
| 1283 | return 0; |
| 1284 | } |
| 1285 | \f |
| 1286 | /* Install static route into rib. */ |
| 1287 | void |
| 1288 | static_install_ipv4 (struct prefix *p, struct static_ipv4 *si) |
| 1289 | { |
| 1290 | struct rib *rib; |
| 1291 | struct route_node *rn; |
| 1292 | struct route_table *table; |
| 1293 | |
| 1294 | /* Lookup table. */ |
| 1295 | table = vrf_table (AFI_IP, SAFI_UNICAST, 0); |
| 1296 | if (! table) |
| 1297 | return; |
| 1298 | |
| 1299 | /* Lookup existing route */ |
| 1300 | rn = route_node_get (table, p); |
| 1301 | for (rib = rn->info; rib; rib = rib->next) |
| 1302 | if (rib->type == ZEBRA_ROUTE_STATIC && rib->distance == si->distance) |
| 1303 | break; |
| 1304 | |
| 1305 | if (rib) |
| 1306 | { |
| 1307 | /* Same distance static route is there. Update it with new |
| 1308 | nexthop. */ |
| 718e3744 |
1309 | route_unlock_node (rn); |
| 718e3744 |
1310 | switch (si->type) |
| 7021c425 |
1311 | { |
| 1312 | case STATIC_IPV4_GATEWAY: |
| 1313 | nexthop_ipv4_add (rib, &si->gate.ipv4); |
| 1314 | break; |
| 1315 | case STATIC_IPV4_IFNAME: |
| 1316 | nexthop_ifname_add (rib, si->gate.ifname); |
| 1317 | break; |
| 1318 | case STATIC_IPV4_BLACKHOLE: |
| 1319 | nexthop_blackhole_add (rib); |
| 1320 | break; |
| 1321 | } |
| 718e3744 |
1322 | rib_process (rn, NULL); |
| 1323 | } |
| 1324 | else |
| 1325 | { |
| 1326 | /* This is new static route. */ |
| 1327 | rib = XMALLOC (MTYPE_RIB, sizeof (struct rib)); |
| 1328 | memset (rib, 0, sizeof (struct rib)); |
| 1329 | |
| 1330 | rib->type = ZEBRA_ROUTE_STATIC; |
| 1331 | rib->distance = si->distance; |
| 1332 | rib->metric = 0; |
| 1333 | rib->nexthop_num = 0; |
| 1334 | |
| 1335 | switch (si->type) |
| 7021c425 |
1336 | { |
| 1337 | case STATIC_IPV4_GATEWAY: |
| 1338 | nexthop_ipv4_add (rib, &si->gate.ipv4); |
| 1339 | break; |
| 1340 | case STATIC_IPV4_IFNAME: |
| 1341 | nexthop_ifname_add (rib, si->gate.ifname); |
| 1342 | break; |
| 1343 | case STATIC_IPV4_BLACKHOLE: |
| 1344 | nexthop_blackhole_add (rib); |
| 1345 | break; |
| 1346 | } |
| 718e3744 |
1347 | |
| 81dfcaa2 |
1348 | /* Save the flags of this static routes (reject, blackhole) */ |
| 1349 | rib->flags = si->flags; |
| 1350 | |
| 718e3744 |
1351 | /* Link this rib to the tree. */ |
| 1352 | rib_addnode (rn, rib); |
| 1353 | |
| 1354 | /* Process this prefix. */ |
| 1355 | rib_process (rn, NULL); |
| 1356 | } |
| 1357 | } |
| 1358 | |
| 1359 | int |
| 1360 | static_ipv4_nexthop_same (struct nexthop *nexthop, struct static_ipv4 *si) |
| 1361 | { |
| 1362 | if (nexthop->type == NEXTHOP_TYPE_IPV4 |
| 1363 | && si->type == STATIC_IPV4_GATEWAY |
| 1364 | && IPV4_ADDR_SAME (&nexthop->gate.ipv4, &si->gate.ipv4)) |
| 1365 | return 1; |
| 1366 | if (nexthop->type == NEXTHOP_TYPE_IFNAME |
| 1367 | && si->type == STATIC_IPV4_IFNAME |
| 1368 | && strcmp (nexthop->ifname, si->gate.ifname) == 0) |
| 1369 | return 1; |
| 595db7f1 |
1370 | if (nexthop->type == NEXTHOP_TYPE_BLACKHOLE |
| 1371 | && si->type == STATIC_IPV4_BLACKHOLE) |
| 1372 | return 1; |
| 718e3744 |
1373 | return 0;; |
| 1374 | } |
| 1375 | |
| 1376 | /* Uninstall static route from RIB. */ |
| 1377 | void |
| 1378 | static_uninstall_ipv4 (struct prefix *p, struct static_ipv4 *si) |
| 1379 | { |
| 1380 | struct route_node *rn; |
| 1381 | struct rib *rib; |
| 1382 | struct nexthop *nexthop; |
| 1383 | struct route_table *table; |
| 1384 | |
| 1385 | /* Lookup table. */ |
| 1386 | table = vrf_table (AFI_IP, SAFI_UNICAST, 0); |
| 1387 | if (! table) |
| 1388 | return; |
| 1389 | |
| 1390 | /* Lookup existing route with type and distance. */ |
| 1391 | rn = route_node_lookup (table, p); |
| 1392 | if (! rn) |
| 1393 | return; |
| 1394 | |
| 1395 | for (rib = rn->info; rib; rib = rib->next) |
| 1396 | if (rib->type == ZEBRA_ROUTE_STATIC && rib->distance == si->distance) |
| 1397 | break; |
| 1398 | |
| 1399 | if (! rib) |
| 1400 | { |
| 1401 | route_unlock_node (rn); |
| 1402 | return; |
| 1403 | } |
| 1404 | |
| 1405 | /* Lookup nexthop. */ |
| 1406 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) |
| 1407 | if (static_ipv4_nexthop_same (nexthop, si)) |
| 1408 | break; |
| 1409 | |
| 1410 | /* Can't find nexthop. */ |
| 1411 | if (! nexthop) |
| 1412 | { |
| 1413 | route_unlock_node (rn); |
| 1414 | return; |
| 1415 | } |
| 1416 | |
| 1417 | /* Check nexthop. */ |
| 1418 | if (rib->nexthop_num == 1) |
| 1419 | { |
| 1420 | rib_delnode (rn, rib); |
| 1421 | rib_process (rn, rib); |
| 1422 | newrib_free (rib); |
| 1423 | route_unlock_node (rn); |
| 1424 | } |
| 1425 | else |
| 1426 | { |
| 6baeb988 |
1427 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)) |
| 1428 | rib_uninstall (rn, rib); |
| 718e3744 |
1429 | nexthop_delete (rib, nexthop); |
| 1430 | nexthop_free (nexthop); |
| 1431 | rib_process (rn, rib); |
| 1432 | } |
| 1433 | |
| 1434 | /* Unlock node. */ |
| 1435 | route_unlock_node (rn); |
| 1436 | } |
| 1437 | |
| 1438 | /* Add static route into static route configuration. */ |
| 1439 | int |
| 39db97e4 |
1440 | static_add_ipv4 (struct prefix *p, struct in_addr *gate, const char *ifname, |
| 81dfcaa2 |
1441 | u_char flags, u_char distance, u_int32_t vrf_id) |
| 718e3744 |
1442 | { |
| 1443 | u_char type = 0; |
| 1444 | struct route_node *rn; |
| 1445 | struct static_ipv4 *si; |
| 1446 | struct static_ipv4 *pp; |
| 1447 | struct static_ipv4 *cp; |
| 1448 | struct static_ipv4 *update = NULL; |
| 1449 | struct route_table *stable; |
| 1450 | |
| 1451 | /* Lookup table. */ |
| 1452 | stable = vrf_static_table (AFI_IP, SAFI_UNICAST, vrf_id); |
| 1453 | if (! stable) |
| 1454 | return -1; |
| 1455 | |
| 1456 | /* Lookup static route prefix. */ |
| 1457 | rn = route_node_get (stable, p); |
| 1458 | |
| 1459 | /* Make flags. */ |
| 1460 | if (gate) |
| 1461 | type = STATIC_IPV4_GATEWAY; |
| 368aa3f0 |
1462 | else if (ifname) |
| 718e3744 |
1463 | type = STATIC_IPV4_IFNAME; |
| 595db7f1 |
1464 | else |
| 1465 | type = STATIC_IPV4_BLACKHOLE; |
| 718e3744 |
1466 | |
| 1467 | /* Do nothing if there is a same static route. */ |
| 1468 | for (si = rn->info; si; si = si->next) |
| 1469 | { |
| 1470 | if (type == si->type |
| 1471 | && (! gate || IPV4_ADDR_SAME (gate, &si->gate.ipv4)) |
| 1472 | && (! ifname || strcmp (ifname, si->gate.ifname) == 0)) |
| 1473 | { |
| 1474 | if (distance == si->distance) |
| 1475 | { |
| 1476 | route_unlock_node (rn); |
| 1477 | return 0; |
| 1478 | } |
| 1479 | else |
| 1480 | update = si; |
| 1481 | } |
| 1482 | } |
| 1483 | |
| 1484 | /* Distance chaged. */ |
| 1485 | if (update) |
| 1486 | static_delete_ipv4 (p, gate, ifname, update->distance, vrf_id); |
| 1487 | |
| 1488 | /* Make new static route structure. */ |
| 1489 | si = XMALLOC (MTYPE_STATIC_IPV4, sizeof (struct static_ipv4)); |
| 1490 | memset (si, 0, sizeof (struct static_ipv4)); |
| 1491 | |
| 1492 | si->type = type; |
| 1493 | si->distance = distance; |
| 81dfcaa2 |
1494 | si->flags = flags; |
| 718e3744 |
1495 | |
| 1496 | if (gate) |
| 1497 | si->gate.ipv4 = *gate; |
| 1498 | if (ifname) |
| 1499 | si->gate.ifname = XSTRDUP (0, ifname); |
| 1500 | |
| 1501 | /* Add new static route information to the tree with sort by |
| 1502 | distance value and gateway address. */ |
| 1503 | for (pp = NULL, cp = rn->info; cp; pp = cp, cp = cp->next) |
| 1504 | { |
| 1505 | if (si->distance < cp->distance) |
| 1506 | break; |
| 1507 | if (si->distance > cp->distance) |
| 1508 | continue; |
| 1509 | if (si->type == STATIC_IPV4_GATEWAY && cp->type == STATIC_IPV4_GATEWAY) |
| 1510 | { |
| 1511 | if (ntohl (si->gate.ipv4.s_addr) < ntohl (cp->gate.ipv4.s_addr)) |
| 1512 | break; |
| 1513 | if (ntohl (si->gate.ipv4.s_addr) > ntohl (cp->gate.ipv4.s_addr)) |
| 1514 | continue; |
| 1515 | } |
| 1516 | } |
| 1517 | |
| 1518 | /* Make linked list. */ |
| 1519 | if (pp) |
| 1520 | pp->next = si; |
| 1521 | else |
| 1522 | rn->info = si; |
| 1523 | if (cp) |
| 1524 | cp->prev = si; |
| 1525 | si->prev = pp; |
| 1526 | si->next = cp; |
| 1527 | |
| 1528 | /* Install into rib. */ |
| 1529 | static_install_ipv4 (p, si); |
| 1530 | |
| 1531 | return 1; |
| 1532 | } |
| 1533 | |
| 1534 | /* Delete static route from static route configuration. */ |
| 1535 | int |
| 39db97e4 |
1536 | static_delete_ipv4 (struct prefix *p, struct in_addr *gate, const char *ifname, |
| 718e3744 |
1537 | u_char distance, u_int32_t vrf_id) |
| 1538 | { |
| 1539 | u_char type = 0; |
| 1540 | struct route_node *rn; |
| 1541 | struct static_ipv4 *si; |
| 1542 | struct route_table *stable; |
| 1543 | |
| 1544 | /* Lookup table. */ |
| 1545 | stable = vrf_static_table (AFI_IP, SAFI_UNICAST, vrf_id); |
| 1546 | if (! stable) |
| 1547 | return -1; |
| 1548 | |
| 1549 | /* Lookup static route prefix. */ |
| 1550 | rn = route_node_lookup (stable, p); |
| 1551 | if (! rn) |
| 1552 | return 0; |
| 1553 | |
| 1554 | /* Make flags. */ |
| 1555 | if (gate) |
| 1556 | type = STATIC_IPV4_GATEWAY; |
| 1557 | else if (ifname) |
| 1558 | type = STATIC_IPV4_IFNAME; |
| 595db7f1 |
1559 | else |
| 1560 | type = STATIC_IPV4_BLACKHOLE; |
| 718e3744 |
1561 | |
| 1562 | /* Find same static route is the tree */ |
| 1563 | for (si = rn->info; si; si = si->next) |
| 1564 | if (type == si->type |
| 1565 | && (! gate || IPV4_ADDR_SAME (gate, &si->gate.ipv4)) |
| 1566 | && (! ifname || strcmp (ifname, si->gate.ifname) == 0)) |
| 1567 | break; |
| 1568 | |
| 1569 | /* Can't find static route. */ |
| 1570 | if (! si) |
| 1571 | { |
| 1572 | route_unlock_node (rn); |
| 1573 | return 0; |
| 1574 | } |
| 1575 | |
| 1576 | /* Install into rib. */ |
| 1577 | static_uninstall_ipv4 (p, si); |
| 1578 | |
| 1579 | /* Unlink static route from linked list. */ |
| 1580 | if (si->prev) |
| 1581 | si->prev->next = si->next; |
| 1582 | else |
| 1583 | rn->info = si->next; |
| 1584 | if (si->next) |
| 1585 | si->next->prev = si->prev; |
| 143a385f |
1586 | route_unlock_node (rn); |
| 718e3744 |
1587 | |
| 1588 | /* Free static route configuration. */ |
| a0f6acd8 |
1589 | if (ifname) |
| 1590 | XFREE (0, si->gate.ifname); |
| 718e3744 |
1591 | XFREE (MTYPE_STATIC_IPV4, si); |
| 1592 | |
| 143a385f |
1593 | route_unlock_node (rn); |
| 1594 | |
| 718e3744 |
1595 | return 1; |
| 1596 | } |
| 1597 | |
| 1598 | \f |
| 1599 | #ifdef HAVE_IPV6 |
| 1600 | int |
| 1601 | rib_bogus_ipv6 (int type, struct prefix_ipv6 *p, |
| 1602 | struct in6_addr *gate, unsigned int ifindex, int table) |
| 1603 | { |
| 726f9b2b |
1604 | if (type == ZEBRA_ROUTE_CONNECT && IN6_IS_ADDR_UNSPECIFIED (&p->prefix)) { |
| 1605 | #if defined (MUSICA) || defined (LINUX) |
| 1606 | /* IN6_IS_ADDR_V4COMPAT(&p->prefix) */ |
| 1607 | if (p->prefixlen == 96) |
| 1608 | return 0; |
| 1609 | #endif /* MUSICA */ |
| 718e3744 |
1610 | return 1; |
| 726f9b2b |
1611 | } |
| 718e3744 |
1612 | if (type == ZEBRA_ROUTE_KERNEL && IN6_IS_ADDR_UNSPECIFIED (&p->prefix) |
| 1613 | && p->prefixlen == 96 && gate && IN6_IS_ADDR_UNSPECIFIED (gate)) |
| 1614 | { |
| 1615 | kernel_delete_ipv6_old (p, gate, ifindex, 0, table); |
| 1616 | return 1; |
| 1617 | } |
| 1618 | return 0; |
| 1619 | } |
| 1620 | |
| 1621 | int |
| 1622 | rib_add_ipv6 (int type, int flags, struct prefix_ipv6 *p, |
| 1623 | struct in6_addr *gate, unsigned int ifindex, u_int32_t vrf_id) |
| 1624 | { |
| 1625 | struct rib *rib; |
| 1626 | struct rib *same = NULL; |
| 1627 | struct route_table *table; |
| 1628 | struct route_node *rn; |
| 1629 | struct nexthop *nexthop; |
| 1630 | |
| 1631 | int distance; |
| 1632 | u_int32_t metric = 0; |
| 1633 | |
| 1634 | /* Lookup table. */ |
| 1635 | table = vrf_table (AFI_IP6, SAFI_UNICAST, 0); |
| 1636 | if (! table) |
| 1637 | return 0; |
| 1638 | |
| 1639 | /* Make sure mask is applied. */ |
| 1640 | apply_mask_ipv6 (p); |
| 1641 | |
| 1642 | /* Set default distance by route type. */ |
| 1643 | distance = route_info[type].distance; |
| 1644 | |
| 1645 | if (type == ZEBRA_ROUTE_BGP && CHECK_FLAG (flags, ZEBRA_FLAG_IBGP)) |
| 1646 | distance = 200; |
| 1647 | |
| 1648 | /* Filter bogus route. */ |
| 1649 | if (rib_bogus_ipv6 (type, p, gate, ifindex, 0)) |
| 1650 | return 0; |
| 1651 | |
| 1652 | /* Lookup route node.*/ |
| 1653 | rn = route_node_get (table, (struct prefix *) p); |
| 1654 | |
| 1655 | /* If same type of route are installed, treat it as a implicit |
| 1656 | withdraw. */ |
| 1657 | for (rib = rn->info; rib; rib = rib->next) |
| 1658 | { |
| 1659 | if (rib->type == ZEBRA_ROUTE_CONNECT) |
| 1660 | { |
| 1661 | nexthop = rib->nexthop; |
| 1662 | |
| 1663 | if (rib->type == type |
| 1664 | && nexthop && nexthop->type == NEXTHOP_TYPE_IFINDEX |
| 1665 | && nexthop->ifindex == ifindex) |
| 1666 | { |
| 1667 | rib->refcnt++; |
| 1668 | return 0; |
| 1669 | } |
| 1670 | } |
| 1671 | else if (rib->type == type) |
| 1672 | { |
| 1673 | same = rib; |
| 1674 | rib_delnode (rn, same); |
| 1675 | route_unlock_node (rn); |
| 1676 | break; |
| 1677 | } |
| 1678 | } |
| 1679 | |
| 1680 | /* Allocate new rib structure. */ |
| 1681 | rib = XMALLOC (MTYPE_RIB, sizeof (struct rib)); |
| 1682 | memset (rib, 0, sizeof (struct rib)); |
| 1683 | rib->type = type; |
| 1684 | rib->distance = distance; |
| 1685 | rib->flags = flags; |
| 1686 | rib->metric = metric; |
| b5f45021 |
1687 | rib->table = vrf_id; |
| 718e3744 |
1688 | rib->nexthop_num = 0; |
| 1689 | rib->uptime = time (NULL); |
| 1690 | |
| 1691 | /* Nexthop settings. */ |
| 1692 | if (gate) |
| 1693 | { |
| 1694 | if (ifindex) |
| 1695 | nexthop_ipv6_ifindex_add (rib, gate, ifindex); |
| 1696 | else |
| 1697 | nexthop_ipv6_add (rib, gate); |
| 1698 | } |
| 1699 | else |
| 1700 | nexthop_ifindex_add (rib, ifindex); |
| 1701 | |
| 1702 | /* If this route is kernel route, set FIB flag to the route. */ |
| 1703 | if (type == ZEBRA_ROUTE_KERNEL || type == ZEBRA_ROUTE_CONNECT) |
| 1704 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) |
| 1705 | SET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); |
| 1706 | |
| 1707 | /* Link new rib to node.*/ |
| 1708 | rib_addnode (rn, rib); |
| 1709 | |
| 1710 | /* Process this route node. */ |
| 1711 | rib_process (rn, same); |
| 1712 | |
| 1713 | /* Free implicit route.*/ |
| 1714 | if (same) |
| 1715 | newrib_free (same); |
| 1716 | |
| 1717 | return 0; |
| 1718 | } |
| 1719 | |
| 1720 | int |
| 1721 | rib_delete_ipv6 (int type, int flags, struct prefix_ipv6 *p, |
| 1722 | struct in6_addr *gate, unsigned int ifindex, u_int32_t vrf_id) |
| 1723 | { |
| 1724 | struct route_table *table; |
| 1725 | struct route_node *rn; |
| 1726 | struct rib *rib; |
| 1727 | struct rib *fib = NULL; |
| 1728 | struct rib *same = NULL; |
| 1729 | struct nexthop *nexthop; |
| 1730 | char buf1[BUFSIZ]; |
| 1731 | char buf2[BUFSIZ]; |
| 1732 | |
| 1733 | /* Apply mask. */ |
| 1734 | apply_mask_ipv6 (p); |
| 1735 | |
| 1736 | /* Lookup table. */ |
| 1737 | table = vrf_table (AFI_IP6, SAFI_UNICAST, 0); |
| 1738 | if (! table) |
| 1739 | return 0; |
| 1740 | |
| 1741 | /* Lookup route node. */ |
| 1742 | rn = route_node_lookup (table, (struct prefix *) p); |
| 1743 | if (! rn) |
| 1744 | { |
| 1745 | if (IS_ZEBRA_DEBUG_KERNEL) |
| 1746 | { |
| 1747 | if (gate) |
| b6178002 |
1748 | zlog_debug ("route %s/%d via %s ifindex %d doesn't exist in rib", |
| 718e3744 |
1749 | inet_ntop (AF_INET6, &p->prefix, buf1, BUFSIZ), |
| 1750 | p->prefixlen, |
| 1751 | inet_ntop (AF_INET6, gate, buf2, BUFSIZ), |
| 1752 | ifindex); |
| 1753 | else |
| b6178002 |
1754 | zlog_debug ("route %s/%d ifindex %d doesn't exist in rib", |
| 718e3744 |
1755 | inet_ntop (AF_INET6, &p->prefix, buf1, BUFSIZ), |
| 1756 | p->prefixlen, |
| 1757 | ifindex); |
| 1758 | } |
| 1759 | return ZEBRA_ERR_RTNOEXIST; |
| 1760 | } |
| 1761 | |
| 1762 | /* Lookup same type route. */ |
| 1763 | for (rib = rn->info; rib; rib = rib->next) |
| 1764 | { |
| 1765 | if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)) |
| 1766 | fib = rib; |
| 1767 | |
| 1768 | if (rib->type == ZEBRA_ROUTE_CONNECT) |
| 1769 | { |
| 1770 | nexthop = rib->nexthop; |
| 1771 | |
| 1772 | if (rib->type == type |
| 1773 | && nexthop && nexthop->type == NEXTHOP_TYPE_IFINDEX |
| 1774 | && nexthop->ifindex == ifindex) |
| 1775 | { |
| 1776 | if (rib->refcnt) |
| 1777 | { |
| 1778 | rib->refcnt--; |
| 1779 | route_unlock_node (rn); |
| 1780 | route_unlock_node (rn); |
| 1781 | return 0; |
| 1782 | } |
| 1783 | same = rib; |
| 1784 | break; |
| 1785 | } |
| 1786 | } |
| 1787 | else |
| 1788 | { |
| 1789 | if (rib->type == type) |
| 1790 | { |
| 1791 | same = rib; |
| 1792 | break; |
| 1793 | } |
| 1794 | } |
| 1795 | } |
| 1796 | |
| 1797 | /* If same type of route can't be found and this message is from |
| 1798 | kernel. */ |
| 1799 | if (! same) |
| 1800 | { |
| 1801 | if (fib && type == ZEBRA_ROUTE_KERNEL) |
| 1802 | { |
| 1803 | /* Unset flags. */ |
| 1804 | for (nexthop = fib->nexthop; nexthop; nexthop = nexthop->next) |
| 1805 | UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); |
| 1806 | |
| 1807 | UNSET_FLAG (fib->flags, ZEBRA_FLAG_SELECTED); |
| 1808 | } |
| 1809 | else |
| 1810 | { |
| 1811 | if (IS_ZEBRA_DEBUG_KERNEL) |
| 1812 | { |
| 1813 | if (gate) |
| b6178002 |
1814 | zlog_debug ("route %s/%d via %s ifindex %d type %d doesn't exist in rib", |
| 718e3744 |
1815 | inet_ntop (AF_INET6, &p->prefix, buf1, BUFSIZ), |
| 1816 | p->prefixlen, |
| 1817 | inet_ntop (AF_INET6, gate, buf2, BUFSIZ), |
| 1818 | ifindex, |
| 1819 | type); |
| 1820 | else |
| b6178002 |
1821 | zlog_debug ("route %s/%d ifindex %d type %d doesn't exist in rib", |
| 718e3744 |
1822 | inet_ntop (AF_INET6, &p->prefix, buf1, BUFSIZ), |
| 1823 | p->prefixlen, |
| 1824 | ifindex, |
| 1825 | type); |
| 1826 | } |
| 1827 | route_unlock_node (rn); |
| 1828 | return ZEBRA_ERR_RTNOEXIST; |
| 1829 | } |
| 1830 | } |
| 1831 | |
| 1832 | if (same) |
| 1833 | rib_delnode (rn, same); |
| 1834 | |
| 1835 | /* Process changes. */ |
| 1836 | rib_process (rn, same); |
| 1837 | |
| 1838 | if (same) |
| 1839 | { |
| 1840 | newrib_free (same); |
| 1841 | route_unlock_node (rn); |
| 1842 | } |
| 1843 | |
| 1844 | route_unlock_node (rn); |
| 1845 | |
| 1846 | return 0; |
| 1847 | } |
| 1848 | \f |
| 1849 | /* Install static route into rib. */ |
| 1850 | void |
| 1851 | static_install_ipv6 (struct prefix *p, struct static_ipv6 *si) |
| 1852 | { |
| 1853 | struct rib *rib; |
| 1854 | struct route_table *table; |
| 1855 | struct route_node *rn; |
| 1856 | |
| 1857 | /* Lookup table. */ |
| 1858 | table = vrf_table (AFI_IP6, SAFI_UNICAST, 0); |
| 1859 | if (! table) |
| 1860 | return; |
| 1861 | |
| 1862 | /* Lookup existing route */ |
| 1863 | rn = route_node_get (table, p); |
| 1864 | for (rib = rn->info; rib; rib = rib->next) |
| 1865 | if (rib->type == ZEBRA_ROUTE_STATIC && rib->distance == si->distance) |
| 1866 | break; |
| 1867 | |
| 1868 | if (rib) |
| 1869 | { |
| 1870 | /* Same distance static route is there. Update it with new |
| 1871 | nexthop. */ |
| 718e3744 |
1872 | route_unlock_node (rn); |
| 1873 | |
| 1874 | switch (si->type) |
| 1875 | { |
| 1876 | case STATIC_IPV6_GATEWAY: |
| 1877 | nexthop_ipv6_add (rib, &si->ipv6); |
| 1878 | break; |
| 1879 | case STATIC_IPV6_IFNAME: |
| 1880 | nexthop_ifname_add (rib, si->ifname); |
| 1881 | break; |
| 1882 | case STATIC_IPV6_GATEWAY_IFNAME: |
| 1883 | nexthop_ipv6_ifname_add (rib, &si->ipv6, si->ifname); |
| 1884 | break; |
| 1885 | } |
| 1886 | rib_process (rn, NULL); |
| 1887 | } |
| 1888 | else |
| 1889 | { |
| 1890 | /* This is new static route. */ |
| 1891 | rib = XMALLOC (MTYPE_RIB, sizeof (struct rib)); |
| 1892 | memset (rib, 0, sizeof (struct rib)); |
| 1893 | |
| 1894 | rib->type = ZEBRA_ROUTE_STATIC; |
| 1895 | rib->distance = si->distance; |
| 1896 | rib->metric = 0; |
| 1897 | rib->nexthop_num = 0; |
| 1898 | |
| 1899 | switch (si->type) |
| 1900 | { |
| 1901 | case STATIC_IPV6_GATEWAY: |
| 1902 | nexthop_ipv6_add (rib, &si->ipv6); |
| 1903 | break; |
| 1904 | case STATIC_IPV6_IFNAME: |
| 1905 | nexthop_ifname_add (rib, si->ifname); |
| 1906 | break; |
| 1907 | case STATIC_IPV6_GATEWAY_IFNAME: |
| 1908 | nexthop_ipv6_ifname_add (rib, &si->ipv6, si->ifname); |
| 1909 | break; |
| 1910 | } |
| 1911 | |
| 81dfcaa2 |
1912 | /* Save the flags of this static routes (reject, blackhole) */ |
| 1913 | rib->flags = si->flags; |
| 1914 | |
| 718e3744 |
1915 | /* Link this rib to the tree. */ |
| 1916 | rib_addnode (rn, rib); |
| 1917 | |
| 1918 | /* Process this prefix. */ |
| 1919 | rib_process (rn, NULL); |
| 1920 | } |
| 1921 | } |
| 1922 | |
| 1923 | int |
| 1924 | static_ipv6_nexthop_same (struct nexthop *nexthop, struct static_ipv6 *si) |
| 1925 | { |
| 1926 | if (nexthop->type == NEXTHOP_TYPE_IPV6 |
| 1927 | && si->type == STATIC_IPV6_GATEWAY |
| 1928 | && IPV6_ADDR_SAME (&nexthop->gate.ipv6, &si->ipv6)) |
| 1929 | return 1; |
| 1930 | if (nexthop->type == NEXTHOP_TYPE_IFNAME |
| 1931 | && si->type == STATIC_IPV6_IFNAME |
| 1932 | && strcmp (nexthop->ifname, si->ifname) == 0) |
| 1933 | return 1; |
| 1934 | if (nexthop->type == NEXTHOP_TYPE_IPV6_IFNAME |
| 1935 | && si->type == STATIC_IPV6_GATEWAY_IFNAME |
| 1936 | && IPV6_ADDR_SAME (&nexthop->gate.ipv6, &si->ipv6) |
| 1937 | && strcmp (nexthop->ifname, si->ifname) == 0) |
| 1938 | return 1; |
| 1939 | return 0;; |
| 1940 | } |
| 1941 | |
| 1942 | void |
| 1943 | static_uninstall_ipv6 (struct prefix *p, struct static_ipv6 *si) |
| 1944 | { |
| 1945 | struct route_table *table; |
| 1946 | struct route_node *rn; |
| 1947 | struct rib *rib; |
| 1948 | struct nexthop *nexthop; |
| 1949 | |
| 1950 | /* Lookup table. */ |
| 1951 | table = vrf_table (AFI_IP6, SAFI_UNICAST, 0); |
| 1952 | if (! table) |
| 1953 | return; |
| 1954 | |
| 1955 | /* Lookup existing route with type and distance. */ |
| 1956 | rn = route_node_lookup (table, (struct prefix *) p); |
| 1957 | if (! rn) |
| 1958 | return; |
| 1959 | |
| 1960 | for (rib = rn->info; rib; rib = rib->next) |
| 1961 | if (rib->type == ZEBRA_ROUTE_STATIC && rib->distance == si->distance) |
| 1962 | break; |
| 1963 | if (! rib) |
| 1964 | { |
| 1965 | route_unlock_node (rn); |
| 1966 | return; |
| 1967 | } |
| 1968 | |
| 1969 | /* Lookup nexthop. */ |
| 1970 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) |
| 1971 | if (static_ipv6_nexthop_same (nexthop, si)) |
| 1972 | break; |
| 1973 | |
| 1974 | /* Can't find nexthop. */ |
| 1975 | if (! nexthop) |
| 1976 | { |
| 1977 | route_unlock_node (rn); |
| 1978 | return; |
| 1979 | } |
| 1980 | |
| 1981 | /* Check nexthop. */ |
| 1982 | if (rib->nexthop_num == 1) |
| 1983 | { |
| 1984 | rib_delnode (rn, rib); |
| 1985 | rib_process (rn, rib); |
| 1986 | newrib_free (rib); |
| 1987 | route_unlock_node (rn); |
| 1988 | } |
| 1989 | else |
| 1990 | { |
| 6baeb988 |
1991 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)) |
| 1992 | rib_uninstall (rn, rib); |
| 718e3744 |
1993 | nexthop_delete (rib, nexthop); |
| 1994 | nexthop_free (nexthop); |
| 1995 | rib_process (rn, rib); |
| 1996 | } |
| 1997 | |
| 1998 | /* Unlock node. */ |
| 1999 | route_unlock_node (rn); |
| 2000 | } |
| 2001 | |
| 2002 | /* Add static route into static route configuration. */ |
| 2003 | int |
| 2004 | static_add_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate, |
| 39db97e4 |
2005 | const char *ifname, u_char flags, u_char distance, |
| 2006 | u_int32_t vrf_id) |
| 718e3744 |
2007 | { |
| 2008 | struct route_node *rn; |
| 2009 | struct static_ipv6 *si; |
| 2010 | struct static_ipv6 *pp; |
| 2011 | struct static_ipv6 *cp; |
| 2012 | struct route_table *stable; |
| 2013 | |
| 2014 | /* Lookup table. */ |
| 2015 | stable = vrf_static_table (AFI_IP6, SAFI_UNICAST, vrf_id); |
| 2016 | if (! stable) |
| 2017 | return -1; |
| 2018 | |
| 2019 | /* Lookup static route prefix. */ |
| 2020 | rn = route_node_get (stable, p); |
| 2021 | |
| 2022 | /* Do nothing if there is a same static route. */ |
| 2023 | for (si = rn->info; si; si = si->next) |
| 2024 | { |
| 2025 | if (distance == si->distance |
| 2026 | && type == si->type |
| 2027 | && (! gate || IPV6_ADDR_SAME (gate, &si->ipv6)) |
| 2028 | && (! ifname || strcmp (ifname, si->ifname) == 0)) |
| 2029 | { |
| 2030 | route_unlock_node (rn); |
| 2031 | return 0; |
| 2032 | } |
| 2033 | } |
| 2034 | |
| 2035 | /* Make new static route structure. */ |
| 2036 | si = XMALLOC (MTYPE_STATIC_IPV6, sizeof (struct static_ipv6)); |
| 2037 | memset (si, 0, sizeof (struct static_ipv6)); |
| 2038 | |
| 2039 | si->type = type; |
| 2040 | si->distance = distance; |
| 81dfcaa2 |
2041 | si->flags = flags; |
| 718e3744 |
2042 | |
| 2043 | switch (type) |
| 2044 | { |
| 2045 | case STATIC_IPV6_GATEWAY: |
| 2046 | si->ipv6 = *gate; |
| 2047 | break; |
| 2048 | case STATIC_IPV6_IFNAME: |
| 2049 | si->ifname = XSTRDUP (0, ifname); |
| 2050 | break; |
| 2051 | case STATIC_IPV6_GATEWAY_IFNAME: |
| 2052 | si->ipv6 = *gate; |
| 2053 | si->ifname = XSTRDUP (0, ifname); |
| 2054 | break; |
| 2055 | } |
| 2056 | |
| 2057 | /* Add new static route information to the tree with sort by |
| 2058 | distance value and gateway address. */ |
| 2059 | for (pp = NULL, cp = rn->info; cp; pp = cp, cp = cp->next) |
| 2060 | { |
| 2061 | if (si->distance < cp->distance) |
| 2062 | break; |
| 2063 | if (si->distance > cp->distance) |
| 2064 | continue; |
| 2065 | } |
| 2066 | |
| 2067 | /* Make linked list. */ |
| 2068 | if (pp) |
| 2069 | pp->next = si; |
| 2070 | else |
| 2071 | rn->info = si; |
| 2072 | if (cp) |
| 2073 | cp->prev = si; |
| 2074 | si->prev = pp; |
| 2075 | si->next = cp; |
| 2076 | |
| 2077 | /* Install into rib. */ |
| 2078 | static_install_ipv6 (p, si); |
| 2079 | |
| 2080 | return 1; |
| 2081 | } |
| 2082 | |
| 2083 | /* Delete static route from static route configuration. */ |
| 2084 | int |
| 2085 | static_delete_ipv6 (struct prefix *p, u_char type, struct in6_addr *gate, |
| 39db97e4 |
2086 | const char *ifname, u_char distance, u_int32_t vrf_id) |
| 718e3744 |
2087 | { |
| 2088 | struct route_node *rn; |
| 2089 | struct static_ipv6 *si; |
| 2090 | struct route_table *stable; |
| 2091 | |
| 2092 | /* Lookup table. */ |
| 2093 | stable = vrf_static_table (AFI_IP6, SAFI_UNICAST, vrf_id); |
| 2094 | if (! stable) |
| 2095 | return -1; |
| 2096 | |
| 2097 | /* Lookup static route prefix. */ |
| 2098 | rn = route_node_lookup (stable, p); |
| 2099 | if (! rn) |
| 2100 | return 0; |
| 2101 | |
| 2102 | /* Find same static route is the tree */ |
| 2103 | for (si = rn->info; si; si = si->next) |
| 2104 | if (distance == si->distance |
| 2105 | && type == si->type |
| 2106 | && (! gate || IPV6_ADDR_SAME (gate, &si->ipv6)) |
| 2107 | && (! ifname || strcmp (ifname, si->ifname) == 0)) |
| 2108 | break; |
| 2109 | |
| 2110 | /* Can't find static route. */ |
| 2111 | if (! si) |
| 2112 | { |
| 2113 | route_unlock_node (rn); |
| 2114 | return 0; |
| 2115 | } |
| 2116 | |
| 2117 | /* Install into rib. */ |
| 2118 | static_uninstall_ipv6 (p, si); |
| 2119 | |
| 2120 | /* Unlink static route from linked list. */ |
| 2121 | if (si->prev) |
| 2122 | si->prev->next = si->next; |
| 2123 | else |
| 2124 | rn->info = si->next; |
| 2125 | if (si->next) |
| 2126 | si->next->prev = si->prev; |
| 2127 | |
| 2128 | /* Free static route configuration. */ |
| a0f6acd8 |
2129 | if (ifname) |
| 2130 | XFREE (0, si->ifname); |
| 718e3744 |
2131 | XFREE (MTYPE_STATIC_IPV6, si); |
| 2132 | |
| 2133 | return 1; |
| 2134 | } |
| 2135 | #endif /* HAVE_IPV6 */ |
| 2136 | \f |
| 2137 | /* RIB update function. */ |
| 2138 | void |
| 2139 | rib_update () |
| 2140 | { |
| 2141 | struct route_node *rn; |
| 2142 | struct route_table *table; |
| 2143 | |
| 2144 | table = vrf_table (AFI_IP, SAFI_UNICAST, 0); |
| 2145 | if (table) |
| 2146 | for (rn = route_top (table); rn; rn = route_next (rn)) |
| 2147 | rib_process (rn, NULL); |
| 2148 | |
| 2149 | table = vrf_table (AFI_IP6, SAFI_UNICAST, 0); |
| 2150 | if (table) |
| 2151 | for (rn = route_top (table); rn; rn = route_next (rn)) |
| 2152 | rib_process (rn, NULL); |
| 2153 | } |
| 2154 | |
| 2155 | /* Interface goes up. */ |
| 2156 | void |
| 2157 | rib_if_up (struct interface *ifp) |
| 2158 | { |
| 2159 | rib_update (); |
| 2160 | } |
| 2161 | |
| 2162 | /* Interface goes down. */ |
| 2163 | void |
| 2164 | rib_if_down (struct interface *ifp) |
| 2165 | { |
| 2166 | rib_update (); |
| 2167 | } |
| 2168 | \f |
| 2169 | /* Remove all routes which comes from non main table. */ |
| 2170 | void |
| 2171 | rib_weed_table (struct route_table *table) |
| 2172 | { |
| 2173 | struct route_node *rn; |
| 2174 | struct rib *rib; |
| 2175 | struct rib *next; |
| 2176 | |
| 2177 | if (table) |
| 2178 | for (rn = route_top (table); rn; rn = route_next (rn)) |
| 2179 | for (rib = rn->info; rib; rib = next) |
| 2180 | { |
| 2181 | next = rib->next; |
| 2182 | |
| b21b19c5 |
2183 | if (rib->table != zebrad.rtm_table_default && |
| 718e3744 |
2184 | rib->table != RT_TABLE_MAIN) |
| 2185 | { |
| 2186 | rib_delnode (rn, rib); |
| 2187 | newrib_free (rib); |
| 2188 | route_unlock_node (rn); |
| 2189 | } |
| 2190 | } |
| 2191 | } |
| 2192 | |
| 2193 | /* Delete all routes from non main table. */ |
| 2194 | void |
| 2195 | rib_weed_tables () |
| 2196 | { |
| 2197 | rib_weed_table (vrf_table (AFI_IP, SAFI_UNICAST, 0)); |
| 2198 | rib_weed_table (vrf_table (AFI_IP6, SAFI_UNICAST, 0)); |
| 2199 | } |
| 2200 | \f |
| 2201 | /* Delete self installed routes after zebra is relaunched. */ |
| 2202 | void |
| 2203 | rib_sweep_table (struct route_table *table) |
| 2204 | { |
| 2205 | struct route_node *rn; |
| 2206 | struct rib *rib; |
| 2207 | struct rib *next; |
| 2208 | int ret = 0; |
| 2209 | |
| 2210 | if (table) |
| 2211 | for (rn = route_top (table); rn; rn = route_next (rn)) |
| 2212 | for (rib = rn->info; rib; rib = next) |
| 2213 | { |
| 2214 | next = rib->next; |
| 2215 | |
| 2216 | if (rib->type == ZEBRA_ROUTE_KERNEL && |
| 2217 | CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELFROUTE)) |
| 2218 | { |
| 2219 | ret = rib_uninstall_kernel (rn, rib); |
| 2220 | if (! ret) |
| 2221 | { |
| 2222 | rib_delnode (rn, rib); |
| 2223 | newrib_free (rib); |
| 2224 | route_unlock_node (rn); |
| 2225 | } |
| 2226 | } |
| 2227 | } |
| 2228 | } |
| 2229 | |
| 2230 | /* Sweep all RIB tables. */ |
| 2231 | void |
| 2232 | rib_sweep_route () |
| 2233 | { |
| 2234 | rib_sweep_table (vrf_table (AFI_IP, SAFI_UNICAST, 0)); |
| 2235 | rib_sweep_table (vrf_table (AFI_IP6, SAFI_UNICAST, 0)); |
| 2236 | } |
| 2237 | \f |
| 2238 | /* Close RIB and clean up kernel routes. */ |
| 2239 | void |
| 2240 | rib_close_table (struct route_table *table) |
| 2241 | { |
| 2242 | struct route_node *rn; |
| 2243 | struct rib *rib; |
| 2244 | |
| 2245 | if (table) |
| 2246 | for (rn = route_top (table); rn; rn = route_next (rn)) |
| 2247 | for (rib = rn->info; rib; rib = rib->next) |
| 2248 | if (! RIB_SYSTEM_ROUTE (rib) |
| 2249 | && CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)) |
| 2250 | rib_uninstall_kernel (rn, rib); |
| 2251 | } |
| 2252 | |
| 2253 | /* Close all RIB tables. */ |
| 2254 | void |
| 2255 | rib_close () |
| 2256 | { |
| 2257 | rib_close_table (vrf_table (AFI_IP, SAFI_UNICAST, 0)); |
| 2258 | rib_close_table (vrf_table (AFI_IP6, SAFI_UNICAST, 0)); |
| 2259 | } |
| 2260 | \f |
| 2261 | /* Routing information base initialize. */ |
| 2262 | void |
| 2263 | rib_init () |
| 2264 | { |
| 2265 | /* VRF initialization. */ |
| 2266 | vrf_init (); |
| 2267 | } |
projects / mirror_frr.git / blame