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