ospf6d/ospf6_route.c

   1 /*
   2  * Copyright (C) 2003 Yasuhiro Ohara
   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 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
  19  */
  20
  21 #include <zebra.h>
  22
  23 #include "log.h"
  24 #include "memory.h"
  25 #include "prefix.h"
  26 #include "table.h"
  27 #include "vty.h"
  28 #include "command.h"
  29 #include "linklist.h"
  30
  31 #include "ospf6_proto.h"
  32 #include "ospf6_lsa.h"
  33 #include "ospf6_lsdb.h"
  34 #include "ospf6_route.h"
  35 #include "ospf6_top.h"
  36 #include "ospf6_area.h"
  37 #include "ospf6_interface.h"
  38 #include "ospf6d.h"
  39 #include "ospf6_zebra.h"
  40
  41 unsigned char conf_debug_ospf6_route = 0;
  42
  43 static char *ospf6_route_table_name(struct ospf6_route_table *table)
  44 {
  45         static char name[64];
  46         switch (table->scope_type) {
  47         case OSPF6_SCOPE_TYPE_GLOBAL: {
  48                 switch (table->table_type) {
  49                 case OSPF6_TABLE_TYPE_ROUTES:
  50                         snprintf(name, sizeof(name), "global route table");
  51                         break;
  52                 case OSPF6_TABLE_TYPE_BORDER_ROUTERS:
  53                         snprintf(name, sizeof(name), "global brouter table");
  54                         break;
  55                 case OSPF6_TABLE_TYPE_EXTERNAL_ROUTES:
  56                         snprintf(name, sizeof(name), "global external table");
  57                         break;
  58                 default:
  59                         snprintf(name, sizeof(name), "global unknown table");
  60                         break;
  61                 }
  62         } break;
  63
  64         case OSPF6_SCOPE_TYPE_AREA: {
  65                 struct ospf6_area *oa = (struct ospf6_area *)table->scope;
  66                 switch (table->table_type) {
  67                 case OSPF6_TABLE_TYPE_SPF_RESULTS:
  68                         snprintf(name, sizeof(name), "area %s spf table",
  69                                  oa->name);
  70                         break;
  71                 case OSPF6_TABLE_TYPE_ROUTES:
  72                         snprintf(name, sizeof(name), "area %s route table",
  73                                  oa->name);
  74                         break;
  75                 case OSPF6_TABLE_TYPE_PREFIX_RANGES:
  76                         snprintf(name, sizeof(name), "area %s range table",
  77                                  oa->name);
  78                         break;
  79                 case OSPF6_TABLE_TYPE_SUMMARY_PREFIXES:
  80                         snprintf(name, sizeof(name),
  81                                  "area %s summary prefix table", oa->name);
  82                         break;
  83                 case OSPF6_TABLE_TYPE_SUMMARY_ROUTERS:
  84                         snprintf(name, sizeof(name),
  85                                  "area %s summary router table", oa->name);
  86                         break;
  87                 default:
  88                         snprintf(name, sizeof(name), "area %s unknown table",
  89                                  oa->name);
  90                         break;
  91                 }
  92         } break;
  93
  94         case OSPF6_SCOPE_TYPE_INTERFACE: {
  95                 struct ospf6_interface *oi =
  96                         (struct ospf6_interface *)table->scope;
  97                 switch (table->table_type) {
  98                 case OSPF6_TABLE_TYPE_CONNECTED_ROUTES:
  99                         snprintf(name, sizeof(name),
 100                                  "interface %s connected table",
 101                                  oi->interface->name);
 102                         break;
 103                 default:
 104                         snprintf(name, sizeof(name),
 105                                  "interface %s unknown table",
 106                                  oi->interface->name);
 107                         break;
 108                 }
 109         } break;
 110
 111         default: {
 112                 switch (table->table_type) {
 113                 case OSPF6_TABLE_TYPE_SPF_RESULTS:
 114                         snprintf(name, sizeof(name), "temporary spf table");
 115                         break;
 116                 default:
 117                         snprintf(name, sizeof(name), "temporary unknown table");
 118                         break;
 119                 }
 120         } break;
 121         }
 122         return name;
 123 }
 124
 125 void ospf6_linkstate_prefix(u_int32_t adv_router, u_int32_t id,
 126                             struct prefix *prefix)
 127 {
 128         memset(prefix, 0, sizeof(struct prefix));
 129         prefix->family = AF_INET6;
 130         prefix->prefixlen = 64;
 131         memcpy(&prefix->u.prefix6.s6_addr[0], &adv_router, 4);
 132         memcpy(&prefix->u.prefix6.s6_addr[4], &id, 4);
 133 }
 134
 135 void ospf6_linkstate_prefix2str(struct prefix *prefix, char *buf, int size)
 136 {
 137         u_int32_t adv_router, id;
 138         char adv_router_str[16], id_str[16];
 139         memcpy(&adv_router, &prefix->u.prefix6.s6_addr[0], 4);
 140         memcpy(&id, &prefix->u.prefix6.s6_addr[4], 4);
 141         inet_ntop(AF_INET, &adv_router, adv_router_str, sizeof(adv_router_str));
 142         inet_ntop(AF_INET, &id, id_str, sizeof(id_str));
 143         if (ntohl(id))
 144                 snprintf(buf, size, "%s Net-ID: %s", adv_router_str, id_str);
 145         else
 146                 snprintf(buf, size, "%s", adv_router_str);
 147 }
 148
 149 /* Global strings for logging */
 150 const char *ospf6_dest_type_str[OSPF6_DEST_TYPE_MAX] = {
 151         "Unknown", "Router", "Network", "Discard", "Linkstate", "AddressRange",
 152 };
 153
 154 const char *ospf6_dest_type_substr[OSPF6_DEST_TYPE_MAX] = {
 155         "?", "R", "N", "D", "L", "A",
 156 };
 157
 158 const char *ospf6_path_type_str[OSPF6_PATH_TYPE_MAX] = {
 159         "Unknown", "Intra-Area", "Inter-Area", "External-1", "External-2",
 160 };
 161
 162 const char *ospf6_path_type_substr[OSPF6_PATH_TYPE_MAX] = {
 163         "??", "IA", "IE", "E1", "E2",
 164 };
 165
 166
 167 struct ospf6_nexthop *ospf6_nexthop_create(void)
 168 {
 169         struct ospf6_nexthop *nh;
 170
 171         nh = XCALLOC(MTYPE_OSPF6_NEXTHOP, sizeof(struct ospf6_nexthop));
 172         return nh;
 173 }
 174
 175 void ospf6_nexthop_delete(struct ospf6_nexthop *nh)
 176 {
 177         if (nh)
 178                 XFREE(MTYPE_OSPF6_NEXTHOP, nh);
 179 }
 180
 181 void ospf6_clear_nexthops(struct list *nh_list)
 182 {
 183         struct listnode *node;
 184         struct ospf6_nexthop *nh;
 185
 186         if (nh_list) {
 187                 for (ALL_LIST_ELEMENTS_RO(nh_list, node, nh))
 188                         ospf6_nexthop_clear(nh);
 189         }
 190 }
 191
 192 static struct ospf6_nexthop *
 193 ospf6_route_find_nexthop(struct list *nh_list, struct ospf6_nexthop *nh_match)
 194 {
 195         struct listnode *node;
 196         struct ospf6_nexthop *nh;
 197
 198         if (nh_list && nh_match) {
 199                 for (ALL_LIST_ELEMENTS_RO(nh_list, node, nh)) {
 200                         if (ospf6_nexthop_is_same(nh, nh_match))
 201                                 return (nh);
 202                 }
 203         }
 204
 205         return (NULL);
 206 }
 207
 208 void ospf6_copy_nexthops(struct list *dst, struct list *src)
 209 {
 210         struct ospf6_nexthop *nh_new, *nh;
 211         struct listnode *node;
 212
 213         if (dst && src) {
 214                 for (ALL_LIST_ELEMENTS_RO(src, node, nh)) {
 215                         if (ospf6_nexthop_is_set(nh)) {
 216                                 nh_new = ospf6_nexthop_create();
 217                                 ospf6_nexthop_copy(nh_new, nh);
 218                                 listnode_add_sort(dst, nh_new);
 219                         }
 220                 }
 221         }
 222 }
 223
 224 void ospf6_merge_nexthops(struct list *dst, struct list *src)
 225 {
 226         struct listnode *node;
 227         struct ospf6_nexthop *nh, *nh_new;
 228
 229         if (src && dst) {
 230                 for (ALL_LIST_ELEMENTS_RO(src, node, nh)) {
 231                         if (!ospf6_route_find_nexthop(dst, nh)) {
 232                                 nh_new = ospf6_nexthop_create();
 233                                 ospf6_nexthop_copy(nh_new, nh);
 234                                 listnode_add_sort(dst, nh_new);
 235                         }
 236                 }
 237         }
 238 }
 239
 240 int ospf6_route_cmp_nexthops(struct ospf6_route *a, struct ospf6_route *b)
 241 {
 242         struct listnode *anode, *bnode;
 243         struct ospf6_nexthop *anh, *bnh;
 244         bool identical = false;
 245
 246         if (a && b) {
 247                 if (listcount(a->nh_list) == listcount(b->nh_list)) {
 248                         for (ALL_LIST_ELEMENTS_RO(a->nh_list, anode, anh)) {
 249                                 identical = false;
 250                                 for (ALL_LIST_ELEMENTS_RO(b->nh_list, bnode,
 251                                                           bnh)) {
 252                                         if (ospf6_nexthop_is_same(anh, bnh))
 253                                                 identical = true;
 254                                 }
 255                                 /* Currnet List A element not found List B
 256                                  * Non-Identical lists return */
 257                                 if (identical == false)
 258                                         return 1;
 259                         }
 260                         return 0;
 261                 } else
 262                         return 1;
 263         }
 264         /* One of the routes doesn't exist ? */
 265         return (1);
 266 }
 267
 268 int ospf6_num_nexthops(struct list *nh_list)
 269 {
 270         return (listcount(nh_list));
 271 }
 272
 273 void ospf6_add_nexthop(struct list *nh_list, int ifindex, struct in6_addr *addr)
 274 {
 275         struct ospf6_nexthop *nh;
 276         struct ospf6_nexthop nh_match;
 277
 278         if (nh_list) {
 279                 nh_match.ifindex = ifindex;
 280                 if (addr != NULL)
 281                         memcpy(&nh_match.address, addr,
 282                                sizeof(struct in6_addr));
 283                 else
 284                         memset(&nh_match.address, 0, sizeof(struct in6_addr));
 285
 286                 if (!ospf6_route_find_nexthop(nh_list, &nh_match)) {
 287                         nh = ospf6_nexthop_create();
 288                         ospf6_nexthop_copy(nh, &nh_match);
 289                         listnode_add(nh_list, nh);
 290                 }
 291         }
 292 }
 293
 294 void ospf6_route_zebra_copy_nexthops(struct ospf6_route *route,
 295                                      struct zapi_nexthop nexthops[],
 296                                      int entries)
 297 {
 298         struct ospf6_nexthop *nh;
 299         struct listnode *node;
 300         char buf[64];
 301         int i;
 302
 303         if (route) {
 304                 i = 0;
 305                 for (ALL_LIST_ELEMENTS_RO(route->nh_list, node, nh)) {
 306                         if (IS_OSPF6_DEBUG_ZEBRA(SEND)) {
 307                                 const char *ifname;
 308                                 inet_ntop(AF_INET6, &nh->address, buf,
 309                                           sizeof(buf));
 310                                 ifname = ifindex2ifname(nh->ifindex,
 311                                                         VRF_DEFAULT);
 312                                 zlog_debug("  nexthop: %s%%%.*s(%d)", buf,
 313                                            IFNAMSIZ, ifname, nh->ifindex);
 314                         }
 315                         if (i >= entries)
 316                                 return;
 317
 318                         nexthops[i].vrf_id = VRF_DEFAULT;
 319                         nexthops[i].ifindex = nh->ifindex;
 320                         if (!IN6_IS_ADDR_UNSPECIFIED(&nh->address)) {
 321                                 nexthops[i].gate.ipv6 = nh->address;
 322                                 nexthops[i].type = NEXTHOP_TYPE_IPV6_IFINDEX;
 323                         } else
 324                                 nexthops[i].type = NEXTHOP_TYPE_IFINDEX;
 325                         i++;
 326                 }
 327         }
 328 }
 329
 330 int ospf6_route_get_first_nh_index(struct ospf6_route *route)
 331 {
 332         struct ospf6_nexthop *nh;
 333
 334         if (route) {
 335                 if ((nh = (struct ospf6_nexthop *)listhead(route->nh_list)))
 336                         return (nh->ifindex);
 337         }
 338
 339         return (-1);
 340 }
 341
 342 int ospf6_nexthop_cmp(struct ospf6_nexthop *a, struct ospf6_nexthop *b)
 343 {
 344         if (a->ifindex < b->ifindex)
 345                 return -1;
 346         else if (a->ifindex > b->ifindex)
 347                 return 1;
 348         else
 349                 return memcmp(&a->address, &b->address,
 350                               sizeof(struct in6_addr));
 351
 352         return 0;
 353 }
 354
 355 static int ospf6_path_cmp(struct ospf6_path *a, struct ospf6_path *b)
 356 {
 357         if (a->origin.adv_router < b->origin.adv_router)
 358                 return -1;
 359         else if (a->origin.adv_router > b->origin.adv_router)
 360                 return 1;
 361         else
 362                 return 0;
 363 }
 364
 365 void ospf6_path_free(struct ospf6_path *op)
 366 {
 367         if (op->nh_list)
 368                 list_delete_and_null(&op->nh_list);
 369         XFREE(MTYPE_OSPF6_PATH, op);
 370 }
 371
 372 struct ospf6_path *ospf6_path_dup(struct ospf6_path *path)
 373 {
 374         struct ospf6_path *new;
 375
 376         new = XCALLOC(MTYPE_OSPF6_PATH, sizeof(struct ospf6_path));
 377         memcpy(new, path, sizeof(struct ospf6_path));
 378         new->nh_list = list_new();
 379         new->nh_list->cmp = (int (*)(void *, void *))ospf6_nexthop_cmp;
 380         new->nh_list->del = (void (*) (void *))ospf6_nexthop_delete;
 381
 382         return new;
 383 }
 384
 385 struct ospf6_route *ospf6_route_create(void)
 386 {
 387         struct ospf6_route *route;
 388         route = XCALLOC(MTYPE_OSPF6_ROUTE, sizeof(struct ospf6_route));
 389         route->nh_list = list_new();
 390         route->nh_list->cmp = (int (*)(void *, void *))ospf6_nexthop_cmp;
 391         route->nh_list->del = (void (*) (void *))ospf6_nexthop_delete;
 392         route->paths = list_new();
 393         route->paths->cmp = (int (*)(void *, void *))ospf6_path_cmp;
 394         route->paths->del =  (void (*)(void *))ospf6_path_free;
 395         return route;
 396 }
 397
 398 void ospf6_route_delete(struct ospf6_route *route)
 399 {
 400         if (route) {
 401                 if (route->nh_list)
 402                         list_delete_and_null(&route->nh_list);
 403                 if (route->paths)
 404                         list_delete_and_null(&route->paths);
 405                 XFREE(MTYPE_OSPF6_ROUTE, route);
 406         }
 407 }
 408
 409 struct ospf6_route *ospf6_route_copy(struct ospf6_route *route)
 410 {
 411         struct ospf6_route *new;
 412
 413         new = ospf6_route_create();
 414         new->type = route->type;
 415         memcpy(&new->prefix, &route->prefix, sizeof(struct prefix));
 416         new->installed = route->installed;
 417         new->changed = route->changed;
 418         new->flag = route->flag;
 419         new->route_option = route->route_option;
 420         new->linkstate_id = route->linkstate_id;
 421         new->path = route->path;
 422         ospf6_copy_nexthops(new->nh_list, route->nh_list);
 423         new->rnode = NULL;
 424         new->prev = NULL;
 425         new->next = NULL;
 426         new->table = NULL;
 427         new->lock = 0;
 428         return new;
 429 }
 430
 431 void ospf6_route_lock(struct ospf6_route *route)
 432 {
 433         route->lock++;
 434 }
 435
 436 void ospf6_route_unlock(struct ospf6_route *route)
 437 {
 438         assert(route->lock > 0);
 439         route->lock--;
 440         if (route->lock == 0) {
 441                 /* Can't detach from the table until here
 442                    because ospf6_route_next () will use
 443                    the 'route->table' pointer for logging */
 444                 route->table = NULL;
 445                 ospf6_route_delete(route);
 446         }
 447 }
 448
 449 /* Route compare function. If ra is more preferred, it returns
 450    less than 0. If rb is more preferred returns greater than 0.
 451    Otherwise (neither one is preferred), returns 0 */
 452 int ospf6_route_cmp(struct ospf6_route *ra, struct ospf6_route *rb)
 453 {
 454         assert(ospf6_route_is_same(ra, rb));
 455         assert(OSPF6_PATH_TYPE_NONE < ra->path.type
 456                && ra->path.type < OSPF6_PATH_TYPE_MAX);
 457         assert(OSPF6_PATH_TYPE_NONE < rb->path.type
 458                && rb->path.type < OSPF6_PATH_TYPE_MAX);
 459
 460         if (ra->type != rb->type)
 461                 return (ra->type - rb->type);
 462
 463         if (ra->path.area_id != rb->path.area_id)
 464                 return (ntohl(ra->path.area_id) - ntohl(rb->path.area_id));
 465
 466         if (ra->path.type != rb->path.type)
 467                 return (ra->path.type - rb->path.type);
 468
 469         if (ra->path.type == OSPF6_PATH_TYPE_EXTERNAL2) {
 470                 if (ra->path.u.cost_e2 != rb->path.u.cost_e2)
 471                         return (ra->path.u.cost_e2 - rb->path.u.cost_e2);
 472         } else {
 473                 if (ra->path.cost != rb->path.cost)
 474                         return (ra->path.cost - rb->path.cost);
 475         }
 476
 477         return 0;
 478 }
 479
 480 struct ospf6_route *ospf6_route_lookup(struct prefix *prefix,
 481                                        struct ospf6_route_table *table)
 482 {
 483         struct route_node *node;
 484         struct ospf6_route *route;
 485
 486         node = route_node_lookup(table->table, prefix);
 487         if (node == NULL)
 488                 return NULL;
 489
 490         route = (struct ospf6_route *)node->info;
 491         route_unlock_node(node); /* to free the lookup lock */
 492         return route;
 493 }
 494
 495 struct ospf6_route *
 496 ospf6_route_lookup_identical(struct ospf6_route *route,
 497                              struct ospf6_route_table *table)
 498 {
 499         struct ospf6_route *target;
 500
 501         for (target = ospf6_route_lookup(&route->prefix, table); target;
 502              target = target->next) {
 503                 if (target->type == route->type &&
 504                     (memcmp(&target->prefix, &route->prefix,
 505                            sizeof(struct prefix)) == 0) &&
 506                     target->path.type == route->path.type &&
 507                     target->path.cost == route->path.cost &&
 508                     target->path.u.cost_e2 == route->path.u.cost_e2 &&
 509                     ospf6_route_cmp_nexthops(target, route) == 0)
 510                         return target;
 511         }
 512         return NULL;
 513 }
 514
 515 struct ospf6_route *
 516 ospf6_route_lookup_bestmatch(struct prefix *prefix,
 517                              struct ospf6_route_table *table)
 518 {
 519         struct route_node *node;
 520         struct ospf6_route *route;
 521
 522         node = route_node_match(table->table, prefix);
 523         if (node == NULL)
 524                 return NULL;
 525         route_unlock_node(node);
 526
 527         route = (struct ospf6_route *)node->info;
 528         return route;
 529 }
 530
 531 #ifdef DEBUG
 532 static void route_table_assert(struct ospf6_route_table *table)
 533 {
 534         struct ospf6_route *prev, *r, *next;
 535         char buf[PREFIX2STR_BUFFER];
 536         unsigned int link_error = 0, num = 0;
 537
 538         r = ospf6_route_head(table);
 539         prev = NULL;
 540         while (r) {
 541                 if (r->prev != prev)
 542                         link_error++;
 543
 544                 next = ospf6_route_next(r);
 545
 546                 if (r->next != next)
 547                         link_error++;
 548
 549                 prev = r;
 550                 r = next;
 551         }
 552
 553         for (r = ospf6_route_head(table); r; r = ospf6_route_next(r))
 554                 num++;
 555
 556         if (link_error == 0 && num == table->count)
 557                 return;
 558
 559         zlog_err("PANIC !!");
 560         zlog_err("Something has gone wrong with ospf6_route_table[%p]", table);
 561         zlog_debug("table count = %d, real number = %d", table->count, num);
 562         zlog_debug("DUMP START");
 563         for (r = ospf6_route_head(table); r; r = ospf6_route_next(r)) {
 564                 prefix2str(&r->prefix, buf, sizeof(buf));
 565                 zlog_info("%p<-[%p]->%p : %s", r->prev, r, r->next, buf);
 566         }
 567         zlog_debug("DUMP END");
 568
 569         assert(link_error == 0 && num == table->count);
 570 }
 571 #define ospf6_route_table_assert(t) (route_table_assert (t))
 572 #else
 573 #define ospf6_route_table_assert(t) ((void) 0)
 574 #endif /*DEBUG*/
 575
 576 struct ospf6_route *ospf6_route_add(struct ospf6_route *route,
 577                                     struct ospf6_route_table *table)
 578 {
 579         struct route_node *node, *nextnode, *prevnode;
 580         struct ospf6_route *current = NULL;
 581         struct ospf6_route *prev = NULL, *old = NULL, *next = NULL;
 582         char buf[PREFIX2STR_BUFFER];
 583         struct timeval now;
 584
 585         assert(route->rnode == NULL);
 586         assert(route->lock == 0);
 587         assert(route->next == NULL);
 588         assert(route->prev == NULL);
 589
 590         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
 591                 ospf6_linkstate_prefix2str(&route->prefix, buf, sizeof(buf));
 592         else
 593                 prefix2str(&route->prefix, buf, sizeof(buf));
 594
 595         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 596                 zlog_debug("%s %p: route add %p: %s",
 597                            ospf6_route_table_name(table), (void *)table,
 598                            (void *)route, buf);
 599         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 600                 zlog_debug("%s: route add: %s", ospf6_route_table_name(table),
 601                            buf);
 602
 603         monotime(&now);
 604
 605         node = route_node_get(table->table, &route->prefix);
 606         route->rnode = node;
 607
 608         /* find place to insert */
 609         for (current = node->info; current; current = current->next) {
 610                 if (!ospf6_route_is_same(current, route))
 611                         next = current;
 612                 else if (current->type != route->type)
 613                         prev = current;
 614                 else if (ospf6_route_is_same_origin(current, route))
 615                         old = current;
 616                 else if (ospf6_route_cmp(current, route) > 0)
 617                         next = current;
 618                 else
 619                         prev = current;
 620
 621                 if (old || next)
 622                         break;
 623         }
 624
 625         if (old) {
 626                 /* if route does not actually change, return unchanged */
 627                 if (ospf6_route_is_identical(old, route)) {
 628                         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 629                                 zlog_debug(
 630                                         "%s %p: route add %p: needless update of %p",
 631                                         ospf6_route_table_name(table),
 632                                         (void *)table, (void *)route,
 633                                         (void *)old);
 634                         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 635                                 zlog_debug("%s: route add: needless update",
 636                                            ospf6_route_table_name(table));
 637
 638                         ospf6_route_delete(route);
 639                         SET_FLAG(old->flag, OSPF6_ROUTE_ADD);
 640                         ospf6_route_table_assert(table);
 641
 642                         /* to free the lookup lock */
 643                         route_unlock_node(node);
 644                         return old;
 645                 }
 646
 647                 if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 648                         zlog_debug("%s %p: route add %p: update of %p",
 649                                    ospf6_route_table_name(table), (void *)table,
 650                                    (void *)route, (void *)old);
 651                 else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 652                         zlog_debug("%s: route add: update",
 653                                    ospf6_route_table_name(table));
 654
 655                 /* replace old one if exists */
 656                 if (node->info == old) {
 657                         node->info = route;
 658                         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 659                 }
 660
 661                 if (old->prev)
 662                         old->prev->next = route;
 663                 route->prev = old->prev;
 664                 if (old->next)
 665                         old->next->prev = route;
 666                 route->next = old->next;
 667
 668                 route->installed = old->installed;
 669                 route->changed = now;
 670                 assert(route->table == NULL);
 671                 route->table = table;
 672
 673                 ospf6_route_unlock(old); /* will be deleted later */
 674                 ospf6_route_lock(route);
 675
 676                 SET_FLAG(route->flag, OSPF6_ROUTE_CHANGE);
 677                 ospf6_route_table_assert(table);
 678
 679                 if (table->hook_add)
 680                         (*table->hook_add)(route);
 681
 682                 return route;
 683         }
 684
 685         /* insert if previous or next node found */
 686         if (prev || next) {
 687                 if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 688                         zlog_debug(
 689                                 "%s %p: route add %p: another path: prev %p, next %p node refcount %u",
 690                                 ospf6_route_table_name(table), (void *)table,
 691                                 (void *)route, (void *)prev, (void *)next,
 692                                 node->lock);
 693                 else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 694                         zlog_debug("%s: route add: another path found",
 695                                    ospf6_route_table_name(table));
 696
 697                 if (prev == NULL)
 698                         prev = next->prev;
 699                 if (next == NULL)
 700                         next = prev->next;
 701
 702                 if (prev)
 703                         prev->next = route;
 704                 route->prev = prev;
 705                 if (next)
 706                         next->prev = route;
 707                 route->next = next;
 708
 709                 if (node->info == next) {
 710                         assert(next->rnode == node);
 711                         node->info = route;
 712                         UNSET_FLAG(next->flag, OSPF6_ROUTE_BEST);
 713                         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 714                         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 715                                 zlog_info(
 716                                         "%s %p: route add %p: replacing previous best: %p",
 717                                         ospf6_route_table_name(table),
 718                                         (void *)table, (void *)route,
 719                                         (void *)next);
 720                 }
 721
 722                 route->installed = now;
 723                 route->changed = now;
 724                 assert(route->table == NULL);
 725                 route->table = table;
 726
 727                 ospf6_route_lock(route);
 728                 table->count++;
 729                 ospf6_route_table_assert(table);
 730
 731                 SET_FLAG(route->flag, OSPF6_ROUTE_ADD);
 732                 if (table->hook_add)
 733                         (*table->hook_add)(route);
 734
 735                 return route;
 736         }
 737
 738         /* Else, this is the brand new route regarding to the prefix */
 739         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 740                 zlog_debug("%s %p: route add %p %s : brand new route",
 741                            ospf6_route_table_name(table), (void *)table,
 742                            (void *)route, buf);
 743         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 744                 zlog_debug("%s: route add: brand new route",
 745                            ospf6_route_table_name(table));
 746
 747         assert(node->info == NULL);
 748         node->info = route;
 749         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 750         ospf6_route_lock(route);
 751         route->installed = now;
 752         route->changed = now;
 753         assert(route->table == NULL);
 754         route->table = table;
 755
 756         /* lookup real existing next route */
 757         nextnode = node;
 758         route_lock_node(nextnode);
 759         do {
 760                 nextnode = route_next(nextnode);
 761         } while (nextnode && nextnode->info == NULL);
 762
 763         /* set next link */
 764         if (nextnode == NULL)
 765                 route->next = NULL;
 766         else {
 767                 route_unlock_node(nextnode);
 768
 769                 next = nextnode->info;
 770                 route->next = next;
 771                 next->prev = route;
 772         }
 773
 774         /* lookup real existing prev route */
 775         prevnode = node;
 776         route_lock_node(prevnode);
 777         do {
 778                 prevnode = route_prev(prevnode);
 779         } while (prevnode && prevnode->info == NULL);
 780
 781         /* set prev link */
 782         if (prevnode == NULL)
 783                 route->prev = NULL;
 784         else {
 785                 route_unlock_node(prevnode);
 786
 787                 prev = prevnode->info;
 788                 while (prev->next && ospf6_route_is_same(prev, prev->next))
 789                         prev = prev->next;
 790                 route->prev = prev;
 791                 prev->next = route;
 792         }
 793
 794         table->count++;
 795         ospf6_route_table_assert(table);
 796
 797         SET_FLAG(route->flag, OSPF6_ROUTE_ADD);
 798         if (table->hook_add)
 799                 (*table->hook_add)(route);
 800
 801         return route;
 802 }
 803
 804 void ospf6_route_remove(struct ospf6_route *route,
 805                         struct ospf6_route_table *table)
 806 {
 807         struct route_node *node;
 808         struct ospf6_route *current;
 809         char buf[PREFIX2STR_BUFFER];
 810
 811         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
 812                 ospf6_linkstate_prefix2str(&route->prefix, buf, sizeof(buf));
 813         else
 814                 prefix2str(&route->prefix, buf, sizeof(buf));
 815
 816         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 817                 zlog_debug("%s %p: route remove %p: %s refcount %u",
 818                            ospf6_route_table_name(table), (void *)table,
 819                            (void *)route, buf, route->lock);
 820         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 821                 zlog_debug("%s: route remove: %s",
 822                            ospf6_route_table_name(table), buf);
 823
 824         node = route_node_lookup(table->table, &route->prefix);
 825         assert(node);
 826
 827         /* find the route to remove, making sure that the route pointer
 828            is from the route table. */
 829         current = node->info;
 830         while (current && current != route)
 831                 current = current->next;
 832
 833         assert(current == route);
 834
 835         /* adjust doubly linked list */
 836         if (route->prev)
 837                 route->prev->next = route->next;
 838         if (route->next)
 839                 route->next->prev = route->prev;
 840
 841         if (node->info == route) {
 842                 if (route->next && route->next->rnode == node) {
 843                         node->info = route->next;
 844                         SET_FLAG(route->next->flag, OSPF6_ROUTE_BEST);
 845                 } else {
 846                         node->info = NULL;
 847                         route->rnode = NULL;
 848                         route_unlock_node(node); /* to free the original lock */
 849                 }
 850         }
 851
 852         route_unlock_node(node); /* to free the lookup lock */
 853         table->count--;
 854         ospf6_route_table_assert(table);
 855
 856         SET_FLAG(route->flag, OSPF6_ROUTE_WAS_REMOVED);
 857
 858         /* Note hook_remove may call ospf6_route_remove */
 859         if (table->hook_remove)
 860                 (*table->hook_remove)(route);
 861
 862         ospf6_route_unlock(route);
 863 }
 864
 865 struct ospf6_route *ospf6_route_head(struct ospf6_route_table *table)
 866 {
 867         struct route_node *node;
 868         struct ospf6_route *route;
 869
 870         node = route_top(table->table);
 871         if (node == NULL)
 872                 return NULL;
 873
 874         /* skip to the real existing entry */
 875         while (node && node->info == NULL)
 876                 node = route_next(node);
 877         if (node == NULL)
 878                 return NULL;
 879
 880         route_unlock_node(node);
 881         assert(node->info);
 882
 883         route = (struct ospf6_route *)node->info;
 884         assert(route->prev == NULL);
 885         assert(route->table == table);
 886         ospf6_route_lock(route);
 887
 888         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 889                 zlog_info("%s %p: route head: %p<-[%p]->%p",
 890                           ospf6_route_table_name(table), (void *)table,
 891                           (void *)route->prev, (void *)route,
 892                           (void *)route->next);
 893
 894         return route;
 895 }
 896
 897 struct ospf6_route *ospf6_route_next(struct ospf6_route *route)
 898 {
 899         struct ospf6_route *next = route->next;
 900
 901         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 902                 zlog_info("%s %p: route next: %p<-[%p]->%p",
 903                           ospf6_route_table_name(route->table),
 904                           (void *)route->table, (void *)route->prev,
 905                           (void *)route, (void *)route->next);
 906
 907         ospf6_route_unlock(route);
 908         if (next)
 909                 ospf6_route_lock(next);
 910
 911         return next;
 912 }
 913
 914 struct ospf6_route *ospf6_route_best_next(struct ospf6_route *route)
 915 {
 916         struct route_node *rnode;
 917         struct ospf6_route *next;
 918
 919         ospf6_route_unlock(route);
 920
 921         rnode = route->rnode;
 922         route_lock_node(rnode);
 923         rnode = route_next(rnode);
 924         while (rnode && rnode->info == NULL)
 925                 rnode = route_next(rnode);
 926         if (rnode == NULL)
 927                 return NULL;
 928         route_unlock_node(rnode);
 929
 930         assert(rnode->info);
 931         next = (struct ospf6_route *)rnode->info;
 932         ospf6_route_lock(next);
 933         return next;
 934 }
 935
 936 struct ospf6_route *ospf6_route_match_head(struct prefix *prefix,
 937                                            struct ospf6_route_table *table)
 938 {
 939         struct route_node *node;
 940         struct ospf6_route *route;
 941
 942         /* Walk down tree. */
 943         node = table->table->top;
 944         while (node && node->p.prefixlen < prefix->prefixlen
 945                && prefix_match(&node->p, prefix))
 946                 node = node->link[prefix_bit(&prefix->u.prefix,
 947                                              node->p.prefixlen)];
 948
 949         if (node)
 950                 route_lock_node(node);
 951         while (node && node->info == NULL)
 952                 node = route_next(node);
 953         if (node == NULL)
 954                 return NULL;
 955         route_unlock_node(node);
 956
 957         if (!prefix_match(prefix, &node->p))
 958                 return NULL;
 959
 960         route = node->info;
 961         ospf6_route_lock(route);
 962         return route;
 963 }
 964
 965 struct ospf6_route *ospf6_route_match_next(struct prefix *prefix,
 966                                            struct ospf6_route *route)
 967 {
 968         struct ospf6_route *next;
 969
 970         next = ospf6_route_next(route);
 971         if (next && !prefix_match(prefix, &next->prefix)) {
 972                 ospf6_route_unlock(next);
 973                 next = NULL;
 974         }
 975
 976         return next;
 977 }
 978
 979 void ospf6_route_remove_all(struct ospf6_route_table *table)
 980 {
 981         struct ospf6_route *route;
 982         for (route = ospf6_route_head(table); route;
 983              route = ospf6_route_next(route))
 984                 ospf6_route_remove(route, table);
 985 }
 986
 987 struct ospf6_route_table *ospf6_route_table_create(int s, int t)
 988 {
 989         struct ospf6_route_table *new;
 990         new = XCALLOC(MTYPE_OSPF6_ROUTE, sizeof(struct ospf6_route_table));
 991         new->table = route_table_init();
 992         new->scope_type = s;
 993         new->table_type = t;
 994         return new;
 995 }
 996
 997 void ospf6_route_table_delete(struct ospf6_route_table *table)
 998 {
 999         ospf6_route_remove_all(table);
1000         bf_free(table->idspace);
1001         route_table_finish(table->table);
1002         XFREE(MTYPE_OSPF6_ROUTE, table);
1003 }
1004
1005
1006 /* VTY commands */
1007 void ospf6_route_show(struct vty *vty, struct ospf6_route *route)
1008 {
1009         int i;
1010         char destination[PREFIX2STR_BUFFER], nexthop[64];
1011         char duration[64];
1012         const char *ifname;
1013         struct timeval now, res;
1014         struct listnode *node;
1015         struct ospf6_nexthop *nh;
1016
1017         monotime(&now);
1018         timersub(&now, &route->changed, &res);
1019         timerstring(&res, duration, sizeof(duration));
1020
1021         /* destination */
1022         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
1023                 ospf6_linkstate_prefix2str(&route->prefix, destination,
1024                                            sizeof(destination));
1025         else if (route->type == OSPF6_DEST_TYPE_ROUTER)
1026                 inet_ntop(route->prefix.family, &route->prefix.u.prefix,
1027                           destination, sizeof(destination));
1028         else
1029                 prefix2str(&route->prefix, destination, sizeof(destination));
1030
1031         i = 0;
1032         for (ALL_LIST_ELEMENTS_RO(route->nh_list, node, nh)) {
1033                 /* nexthop */
1034                 inet_ntop(AF_INET6, &nh->address, nexthop, sizeof(nexthop));
1035                 ifname = ifindex2ifname(nh->ifindex, VRF_DEFAULT);
1036
1037                 if (!i) {
1038                         vty_out(vty, "%c%1s %2s %-30s %-25s %6.*s %s\n",
1039                                 (ospf6_route_is_best(route) ? '*' : ' '),
1040                                 OSPF6_DEST_TYPE_SUBSTR(route->type),
1041                                 OSPF6_PATH_TYPE_SUBSTR(route->path.type),
1042                                 destination, nexthop, IFNAMSIZ, ifname,
1043                                 duration);
1044                         i++;
1045                 } else
1046                         vty_out(vty, "%c%1s %2s %-30s %-25s %6.*s %s\n", ' ',
1047                                 "", "", "", nexthop, IFNAMSIZ, ifname, "");
1048         }
1049 }
1050
1051 void ospf6_route_show_detail(struct vty *vty, struct ospf6_route *route)
1052 {
1053         const char *ifname;
1054         char destination[PREFIX2STR_BUFFER], nexthop[64];
1055         char area_id[16], id[16], adv_router[16], capa[16], options[16];
1056         struct timeval now, res;
1057         char duration[64];
1058         struct listnode *node;
1059         struct ospf6_nexthop *nh;
1060
1061         monotime(&now);
1062
1063         /* destination */
1064         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
1065                 ospf6_linkstate_prefix2str(&route->prefix, destination,
1066                                            sizeof(destination));
1067         else if (route->type == OSPF6_DEST_TYPE_ROUTER)
1068                 inet_ntop(route->prefix.family, &route->prefix.u.prefix,
1069                           destination, sizeof(destination));
1070         else
1071                 prefix2str(&route->prefix, destination, sizeof(destination));
1072         vty_out(vty, "Destination: %s\n", destination);
1073
1074         /* destination type */
1075         vty_out(vty, "Destination type: %s\n",
1076                 OSPF6_DEST_TYPE_NAME(route->type));
1077
1078         /* Time */
1079         timersub(&now, &route->installed, &res);
1080         timerstring(&res, duration, sizeof(duration));
1081         vty_out(vty, "Installed Time: %s ago\n", duration);
1082
1083         timersub(&now, &route->changed, &res);
1084         timerstring(&res, duration, sizeof(duration));
1085         vty_out(vty, "  Changed Time: %s ago\n", duration);
1086
1087         /* Debugging info */
1088         vty_out(vty, "Lock: %d Flags: %s%s%s%s\n", route->lock,
1089                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST) ? "B" : "-"),
1090                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_ADD) ? "A" : "-"),
1091                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_REMOVE) ? "R" : "-"),
1092                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_CHANGE) ? "C" : "-"));
1093         vty_out(vty, "Memory: prev: %p this: %p next: %p\n",
1094                 (void *)route->prev, (void *)route, (void *)route->next);
1095
1096         /* Path section */
1097
1098         /* Area-ID */
1099         inet_ntop(AF_INET, &route->path.area_id, area_id, sizeof(area_id));
1100         vty_out(vty, "Associated Area: %s\n", area_id);
1101
1102         /* Path type */
1103         vty_out(vty, "Path Type: %s\n", OSPF6_PATH_TYPE_NAME(route->path.type));
1104
1105         /* LS Origin */
1106         inet_ntop(AF_INET, &route->path.origin.id, id, sizeof(id));
1107         inet_ntop(AF_INET, &route->path.origin.adv_router, adv_router,
1108                   sizeof(adv_router));
1109         vty_out(vty, "LS Origin: %s Id: %s Adv: %s\n",
1110                 ospf6_lstype_name(route->path.origin.type), id, adv_router);
1111
1112         /* Options */
1113         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1114         vty_out(vty, "Options: %s\n", options);
1115
1116         /* Router Bits */
1117         ospf6_capability_printbuf(route->path.router_bits, capa, sizeof(capa));
1118         vty_out(vty, "Router Bits: %s\n", capa);
1119
1120         /* Prefix Options */
1121         vty_out(vty, "Prefix Options: xxx\n");
1122
1123         /* Metrics */
1124         vty_out(vty, "Metric Type: %d\n", route->path.metric_type);
1125         vty_out(vty, "Metric: %d (%d)\n", route->path.cost,
1126                 route->path.u.cost_e2);
1127
1128         vty_out(vty, "Paths count: %u\n", route->paths->count);
1129         vty_out(vty, "Nexthop count: %u\n", route->nh_list->count);
1130         /* Nexthops */
1131         vty_out(vty, "Nexthop:\n");
1132         for (ALL_LIST_ELEMENTS_RO(route->nh_list, node, nh)) {
1133                 /* nexthop */
1134                 inet_ntop(AF_INET6, &nh->address, nexthop, sizeof(nexthop));
1135                 ifname = ifindex2ifname(nh->ifindex, VRF_DEFAULT);
1136                 vty_out(vty, "  %s %.*s\n", nexthop, IFNAMSIZ, ifname);
1137         }
1138         vty_out(vty, "\n");
1139 }
1140
1141 static void ospf6_route_show_table_summary(struct vty *vty,
1142                                            struct ospf6_route_table *table)
1143 {
1144         struct ospf6_route *route, *prev = NULL;
1145         int i, pathtype[OSPF6_PATH_TYPE_MAX];
1146         unsigned int number = 0;
1147         int nh_count = 0, nhinval = 0, ecmp = 0;
1148         int alternative = 0, destination = 0;
1149
1150         for (i = 0; i < OSPF6_PATH_TYPE_MAX; i++)
1151                 pathtype[i] = 0;
1152
1153         for (route = ospf6_route_head(table); route;
1154              route = ospf6_route_next(route)) {
1155                 if (prev == NULL || !ospf6_route_is_same(prev, route))
1156                         destination++;
1157                 else
1158                         alternative++;
1159                 nh_count = ospf6_num_nexthops(route->nh_list);
1160                 if (!nh_count)
1161                         nhinval++;
1162                 else if (nh_count > 1)
1163                         ecmp++;
1164                 pathtype[route->path.type]++;
1165                 number++;
1166
1167                 prev = route;
1168         }
1169
1170         assert(number == table->count);
1171
1172         vty_out(vty, "Number of OSPFv3 routes: %d\n", number);
1173         vty_out(vty, "Number of Destination: %d\n", destination);
1174         vty_out(vty, "Number of Alternative routes: %d\n", alternative);
1175         vty_out(vty, "Number of Equal Cost Multi Path: %d\n", ecmp);
1176         for (i = OSPF6_PATH_TYPE_INTRA; i <= OSPF6_PATH_TYPE_EXTERNAL2; i++) {
1177                 vty_out(vty, "Number of %s routes: %d\n",
1178                         OSPF6_PATH_TYPE_NAME(i), pathtype[i]);
1179         }
1180 }
1181
1182 static void ospf6_route_show_table_prefix(struct vty *vty,
1183                                           struct prefix *prefix,
1184                                           struct ospf6_route_table *table)
1185 {
1186         struct ospf6_route *route;
1187
1188         route = ospf6_route_lookup(prefix, table);
1189         if (route == NULL)
1190                 return;
1191
1192         ospf6_route_lock(route);
1193         while (route && ospf6_route_is_prefix(prefix, route)) {
1194                 /* Specifying a prefix will always display details */
1195                 ospf6_route_show_detail(vty, route);
1196                 route = ospf6_route_next(route);
1197         }
1198         if (route)
1199                 ospf6_route_unlock(route);
1200 }
1201
1202 static void ospf6_route_show_table_address(struct vty *vty,
1203                                            struct prefix *prefix,
1204                                            struct ospf6_route_table *table)
1205 {
1206         struct ospf6_route *route;
1207
1208         route = ospf6_route_lookup_bestmatch(prefix, table);
1209         if (route == NULL)
1210                 return;
1211
1212         prefix = &route->prefix;
1213         ospf6_route_lock(route);
1214         while (route && ospf6_route_is_prefix(prefix, route)) {
1215                 /* Specifying a prefix will always display details */
1216                 ospf6_route_show_detail(vty, route);
1217                 route = ospf6_route_next(route);
1218         }
1219         if (route)
1220                 ospf6_route_unlock(route);
1221 }
1222
1223 static void ospf6_route_show_table_match(struct vty *vty, int detail,
1224                                          struct prefix *prefix,
1225                                          struct ospf6_route_table *table)
1226 {
1227         struct ospf6_route *route;
1228         assert(prefix->family);
1229
1230         route = ospf6_route_match_head(prefix, table);
1231         while (route) {
1232                 if (detail)
1233                         ospf6_route_show_detail(vty, route);
1234                 else
1235                         ospf6_route_show(vty, route);
1236                 route = ospf6_route_match_next(prefix, route);
1237         }
1238 }
1239
1240 static void ospf6_route_show_table_type(struct vty *vty, int detail,
1241                                         u_char type,
1242                                         struct ospf6_route_table *table)
1243 {
1244         struct ospf6_route *route;
1245
1246         route = ospf6_route_head(table);
1247         while (route) {
1248                 if (route->path.type == type) {
1249                         if (detail)
1250                                 ospf6_route_show_detail(vty, route);
1251                         else
1252                                 ospf6_route_show(vty, route);
1253                 }
1254                 route = ospf6_route_next(route);
1255         }
1256 }
1257
1258 static void ospf6_route_show_table(struct vty *vty, int detail,
1259                                    struct ospf6_route_table *table)
1260 {
1261         struct ospf6_route *route;
1262
1263         route = ospf6_route_head(table);
1264         while (route) {
1265                 if (detail)
1266                         ospf6_route_show_detail(vty, route);
1267                 else
1268                         ospf6_route_show(vty, route);
1269                 route = ospf6_route_next(route);
1270         }
1271 }
1272
1273 int ospf6_route_table_show(struct vty *vty, int argc_start, int argc,
1274                            struct cmd_token **argv,
1275                            struct ospf6_route_table *table)
1276 {
1277         int summary = 0;
1278         int match = 0;
1279         int detail = 0;
1280         int slash = 0;
1281         int isprefix = 0;
1282         int i, ret;
1283         struct prefix prefix;
1284         u_char type = 0;
1285
1286         memset(&prefix, 0, sizeof(struct prefix));
1287
1288         for (i = argc_start; i < argc; i++) {
1289                 if (strmatch(argv[i]->text, "summary")) {
1290                         summary++;
1291                         continue;
1292                 }
1293
1294                 if (strmatch(argv[i]->text, "intra-area")) {
1295                         type = OSPF6_PATH_TYPE_INTRA;
1296                         continue;
1297                 }
1298
1299                 if (strmatch(argv[i]->text, "inter-area")) {
1300                         type = OSPF6_PATH_TYPE_INTER;
1301                         continue;
1302                 }
1303
1304                 if (strmatch(argv[i]->text, "external-1")) {
1305                         type = OSPF6_PATH_TYPE_EXTERNAL1;
1306                         continue;
1307                 }
1308
1309                 if (strmatch(argv[i]->text, "external-2")) {
1310                         type = OSPF6_PATH_TYPE_EXTERNAL2;
1311                         continue;
1312                 }
1313
1314                 if (strmatch(argv[i]->text, "detail")) {
1315                         detail++;
1316                         continue;
1317                 }
1318
1319                 if (strmatch(argv[i]->text, "match")) {
1320                         match++;
1321                         continue;
1322                 }
1323
1324                 ret = str2prefix(argv[i]->arg, &prefix);
1325                 if (ret == 1 && prefix.family == AF_INET6) {
1326                         isprefix++;
1327                         if (strchr(argv[i]->arg, '/'))
1328                                 slash++;
1329                         continue;
1330                 }
1331
1332                 vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1333                 return CMD_SUCCESS;
1334         }
1335
1336         /* Give summary of this route table */
1337         if (summary) {
1338                 ospf6_route_show_table_summary(vty, table);
1339                 return CMD_SUCCESS;
1340         }
1341
1342         /* Give exact prefix-match route */
1343         if (isprefix && !match) {
1344                 /* If exact address, give best matching route */
1345                 if (!slash)
1346                         ospf6_route_show_table_address(vty, &prefix, table);
1347                 else
1348                         ospf6_route_show_table_prefix(vty, &prefix, table);
1349
1350                 return CMD_SUCCESS;
1351         }
1352
1353         if (match)
1354                 ospf6_route_show_table_match(vty, detail, &prefix, table);
1355         else if (type)
1356                 ospf6_route_show_table_type(vty, detail, type, table);
1357         else
1358                 ospf6_route_show_table(vty, detail, table);
1359
1360         return CMD_SUCCESS;
1361 }
1362
1363 static void ospf6_linkstate_show_header(struct vty *vty)
1364 {
1365         vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %s\n", "Type", "Router-ID",
1366                 "Net-ID", "Rtr-Bits", "Options", "Cost");
1367 }
1368
1369 static void ospf6_linkstate_show(struct vty *vty, struct ospf6_route *route)
1370 {
1371         u_int32_t router, id;
1372         char routername[16], idname[16], rbits[16], options[16];
1373
1374         router = ospf6_linkstate_prefix_adv_router(&route->prefix);
1375         inet_ntop(AF_INET, &router, routername, sizeof(routername));
1376         id = ospf6_linkstate_prefix_id(&route->prefix);
1377         inet_ntop(AF_INET, &id, idname, sizeof(idname));
1378
1379         ospf6_capability_printbuf(route->path.router_bits, rbits,
1380                                   sizeof(rbits));
1381         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1382
1383         if (ntohl(id))
1384                 vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %lu\n", "Network",
1385                         routername, idname, rbits, options,
1386                         (unsigned long)route->path.cost);
1387         else
1388                 vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %lu\n", "Router",
1389                         routername, idname, rbits, options,
1390                         (unsigned long)route->path.cost);
1391 }
1392
1393
1394 static void ospf6_linkstate_show_table_exact(struct vty *vty,
1395                                              struct prefix *prefix,
1396                                              struct ospf6_route_table *table)
1397 {
1398         struct ospf6_route *route;
1399
1400         route = ospf6_route_lookup(prefix, table);
1401         if (route == NULL)
1402                 return;
1403
1404         ospf6_route_lock(route);
1405         while (route && ospf6_route_is_prefix(prefix, route)) {
1406                 /* Specifying a prefix will always display details */
1407                 ospf6_route_show_detail(vty, route);
1408                 route = ospf6_route_next(route);
1409         }
1410         if (route)
1411                 ospf6_route_unlock(route);
1412 }
1413
1414 static void ospf6_linkstate_show_table(struct vty *vty, int detail,
1415                                        struct ospf6_route_table *table)
1416 {
1417         struct ospf6_route *route;
1418
1419         if (!detail)
1420                 ospf6_linkstate_show_header(vty);
1421
1422         route = ospf6_route_head(table);
1423         while (route) {
1424                 if (detail)
1425                         ospf6_route_show_detail(vty, route);
1426                 else
1427                         ospf6_linkstate_show(vty, route);
1428                 route = ospf6_route_next(route);
1429         }
1430 }
1431
1432 int ospf6_linkstate_table_show(struct vty *vty, int idx_ipv4, int argc,
1433                                struct cmd_token **argv,
1434                                struct ospf6_route_table *table)
1435 {
1436         int detail = 0;
1437         int is_id = 0;
1438         int is_router = 0;
1439         int i, ret;
1440         struct prefix router, id, prefix;
1441
1442         memset(&router, 0, sizeof(struct prefix));
1443         memset(&id, 0, sizeof(struct prefix));
1444         memset(&prefix, 0, sizeof(struct prefix));
1445
1446         for (i = idx_ipv4; i < argc; i++) {
1447                 if (strmatch(argv[i]->text, "detail")) {
1448                         detail++;
1449                         continue;
1450                 }
1451
1452                 if (!is_router) {
1453                         ret = str2prefix(argv[i]->arg, &router);
1454                         if (ret == 1 && router.family == AF_INET) {
1455                                 is_router++;
1456                                 continue;
1457                         }
1458                         vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1459                         return CMD_SUCCESS;
1460                 }
1461
1462                 if (!is_id) {
1463                         ret = str2prefix(argv[i]->arg, &id);
1464                         if (ret == 1 && id.family == AF_INET) {
1465                                 is_id++;
1466                                 continue;
1467                         }
1468                         vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1469                         return CMD_SUCCESS;
1470                 }
1471
1472                 vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1473                 return CMD_SUCCESS;
1474         }
1475
1476         if (is_router)
1477                 ospf6_linkstate_prefix(router.u.prefix4.s_addr,
1478                                        id.u.prefix4.s_addr, &prefix);
1479
1480         if (prefix.family)
1481                 ospf6_linkstate_show_table_exact(vty, &prefix, table);
1482         else
1483                 ospf6_linkstate_show_table(vty, detail, table);
1484
1485         return CMD_SUCCESS;
1486 }
1487
1488
1489 void ospf6_brouter_show_header(struct vty *vty)
1490 {
1491         vty_out(vty, "%-15s %-8s %-14s %-10s %-15s\n", "Router-ID", "Rtr-Bits",
1492                 "Options", "Path-Type", "Area");
1493 }
1494
1495 void ospf6_brouter_show(struct vty *vty, struct ospf6_route *route)
1496 {
1497         u_int32_t adv_router;
1498         char adv[16], rbits[16], options[16], area[16];
1499
1500         adv_router = ospf6_linkstate_prefix_adv_router(&route->prefix);
1501         inet_ntop(AF_INET, &adv_router, adv, sizeof(adv));
1502         ospf6_capability_printbuf(route->path.router_bits, rbits,
1503                                   sizeof(rbits));
1504         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1505         inet_ntop(AF_INET, &route->path.area_id, area, sizeof(area));
1506
1507         /* vty_out (vty, "%-15s %-8s %-14s %-10s %-15s\n",
1508                  "Router-ID", "Rtr-Bits", "Options", "Path-Type", "Area"); */
1509         vty_out(vty, "%-15s %-8s %-14s %-10s %-15s\n", adv, rbits, options,
1510                 OSPF6_PATH_TYPE_NAME(route->path.type), area);
1511 }
1512
1513 DEFUN (debug_ospf6_route,
1514        debug_ospf6_route_cmd,
1515        "debug ospf6 route <table|intra-area|inter-area|memory>",
1516        DEBUG_STR
1517        OSPF6_STR
1518        "Debug routes\n"
1519        "Debug route table calculation\n"
1520        "Debug intra-area route calculation\n"
1521        "Debug inter-area route calculation\n"
1522        "Debug route memory use\n"
1523        )
1524 {
1525         int idx_type = 3;
1526         unsigned char level = 0;
1527
1528         if (!strcmp(argv[idx_type]->text, "table"))
1529                 level = OSPF6_DEBUG_ROUTE_TABLE;
1530         else if (!strcmp(argv[idx_type]->text, "intra-area"))
1531                 level = OSPF6_DEBUG_ROUTE_INTRA;
1532         else if (!strcmp(argv[idx_type]->text, "inter-area"))
1533                 level = OSPF6_DEBUG_ROUTE_INTER;
1534         else if (!strcmp(argv[idx_type]->text, "memory"))
1535                 level = OSPF6_DEBUG_ROUTE_MEMORY;
1536         OSPF6_DEBUG_ROUTE_ON(level);
1537         return CMD_SUCCESS;
1538 }
1539
1540 DEFUN (no_debug_ospf6_route,
1541        no_debug_ospf6_route_cmd,
1542        "no debug ospf6 route <table|intra-area|inter-area|memory>",
1543        NO_STR
1544        DEBUG_STR
1545        OSPF6_STR
1546        "Debug routes\n"
1547        "Debug route table calculation\n"
1548        "Debug intra-area route calculation\n"
1549        "Debug inter-area route calculation\n"
1550        "Debug route memory use\n")
1551 {
1552         int idx_type = 4;
1553         unsigned char level = 0;
1554
1555         if (!strcmp(argv[idx_type]->text, "table"))
1556                 level = OSPF6_DEBUG_ROUTE_TABLE;
1557         else if (!strcmp(argv[idx_type]->text, "intra-area"))
1558                 level = OSPF6_DEBUG_ROUTE_INTRA;
1559         else if (!strcmp(argv[idx_type]->text, "inter-area"))
1560                 level = OSPF6_DEBUG_ROUTE_INTER;
1561         else if (!strcmp(argv[idx_type]->text, "memory"))
1562                 level = OSPF6_DEBUG_ROUTE_MEMORY;
1563         OSPF6_DEBUG_ROUTE_OFF(level);
1564         return CMD_SUCCESS;
1565 }
1566
1567 int config_write_ospf6_debug_route(struct vty *vty)
1568 {
1569         if (IS_OSPF6_DEBUG_ROUTE(TABLE))
1570                 vty_out(vty, "debug ospf6 route table\n");
1571         if (IS_OSPF6_DEBUG_ROUTE(INTRA))
1572                 vty_out(vty, "debug ospf6 route intra-area\n");
1573         if (IS_OSPF6_DEBUG_ROUTE(INTER))
1574                 vty_out(vty, "debug ospf6 route inter-area\n");
1575         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
1576                 vty_out(vty, "debug ospf6 route memory\n");
1577
1578         return 0;
1579 }
1580
1581 void install_element_ospf6_debug_route(void)
1582 {
1583         install_element(ENABLE_NODE, &debug_ospf6_route_cmd);
1584         install_element(ENABLE_NODE, &no_debug_ospf6_route_cmd);
1585         install_element(CONFIG_NODE, &debug_ospf6_route_cmd);
1586         install_element(CONFIG_NODE, &no_debug_ospf6_route_cmd);
1587 }