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(uint32_t adv_router, uint32_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         uint32_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 *const ospf6_dest_type_str[OSPF6_DEST_TYPE_MAX] = {
 151         "Unknown", "Router", "Network", "Discard", "Linkstate", "AddressRange",
 152 };
 153
 154 const char *const ospf6_dest_type_substr[OSPF6_DEST_TYPE_MAX] = {
 155         "?", "R", "N", "D", "L", "A",
 156 };
 157
 158 const char *const ospf6_path_type_str[OSPF6_PATH_TYPE_MAX] = {
 159         "Unknown", "Intra-Area", "Inter-Area", "External-1", "External-2",
 160 };
 161
 162 const char *const 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         XFREE(MTYPE_OSPF6_NEXTHOP, nh);
 178 }
 179
 180 void ospf6_clear_nexthops(struct list *nh_list)
 181 {
 182         struct listnode *node;
 183         struct ospf6_nexthop *nh;
 184
 185         if (nh_list) {
 186                 for (ALL_LIST_ELEMENTS_RO(nh_list, node, nh))
 187                         ospf6_nexthop_clear(nh);
 188         }
 189 }
 190
 191 static struct ospf6_nexthop *
 192 ospf6_route_find_nexthop(struct list *nh_list, struct ospf6_nexthop *nh_match)
 193 {
 194         struct listnode *node;
 195         struct ospf6_nexthop *nh;
 196
 197         if (nh_list && nh_match) {
 198                 for (ALL_LIST_ELEMENTS_RO(nh_list, node, nh)) {
 199                         if (ospf6_nexthop_is_same(nh, nh_match))
 200                                 return (nh);
 201                 }
 202         }
 203
 204         return (NULL);
 205 }
 206
 207 void ospf6_copy_nexthops(struct list *dst, struct list *src)
 208 {
 209         struct ospf6_nexthop *nh_new, *nh;
 210         struct listnode *node;
 211
 212         if (dst && src) {
 213                 for (ALL_LIST_ELEMENTS_RO(src, node, nh)) {
 214                         if (ospf6_nexthop_is_set(nh)) {
 215                                 nh_new = ospf6_nexthop_create();
 216                                 ospf6_nexthop_copy(nh_new, nh);
 217                                 listnode_add_sort(dst, nh_new);
 218                         }
 219                 }
 220         }
 221 }
 222
 223 void ospf6_merge_nexthops(struct list *dst, struct list *src)
 224 {
 225         struct listnode *node;
 226         struct ospf6_nexthop *nh, *nh_new;
 227
 228         if (src && dst) {
 229                 for (ALL_LIST_ELEMENTS_RO(src, node, nh)) {
 230                         if (!ospf6_route_find_nexthop(dst, nh)) {
 231                                 nh_new = ospf6_nexthop_create();
 232                                 ospf6_nexthop_copy(nh_new, nh);
 233                                 listnode_add_sort(dst, nh_new);
 234                         }
 235                 }
 236         }
 237 }
 238
 239 int ospf6_route_cmp_nexthops(struct ospf6_route *a, struct ospf6_route *b)
 240 {
 241         struct listnode *anode, *bnode;
 242         struct ospf6_nexthop *anh, *bnh;
 243         bool identical = false;
 244
 245         if (a && b) {
 246                 if (listcount(a->nh_list) == listcount(b->nh_list)) {
 247                         for (ALL_LIST_ELEMENTS_RO(a->nh_list, anode, anh)) {
 248                                 identical = false;
 249                                 for (ALL_LIST_ELEMENTS_RO(b->nh_list, bnode,
 250                                                           bnh)) {
 251                                         if (ospf6_nexthop_is_same(anh, bnh))
 252                                                 identical = true;
 253                                 }
 254                                 /* Currnet List A element not found List B
 255                                  * Non-Identical lists return */
 256                                 if (identical == false)
 257                                         return 1;
 258                         }
 259                         return 0;
 260                 } else
 261                         return 1;
 262         }
 263         /* One of the routes doesn't exist ? */
 264         return (1);
 265 }
 266
 267 int ospf6_num_nexthops(struct list *nh_list)
 268 {
 269         return (listcount(nh_list));
 270 }
 271
 272 void ospf6_add_nexthop(struct list *nh_list, int ifindex, struct in6_addr *addr)
 273 {
 274         struct ospf6_nexthop *nh;
 275         struct ospf6_nexthop nh_match;
 276
 277         if (nh_list) {
 278                 nh_match.ifindex = ifindex;
 279                 if (addr != NULL)
 280                         memcpy(&nh_match.address, addr,
 281                                sizeof(struct in6_addr));
 282                 else
 283                         memset(&nh_match.address, 0, sizeof(struct in6_addr));
 284
 285                 if (!ospf6_route_find_nexthop(nh_list, &nh_match)) {
 286                         nh = ospf6_nexthop_create();
 287                         ospf6_nexthop_copy(nh, &nh_match);
 288                         listnode_add(nh_list, nh);
 289                 }
 290         }
 291 }
 292
 293 void ospf6_route_zebra_copy_nexthops(struct ospf6_route *route,
 294                                      struct zapi_nexthop nexthops[],
 295                                      int entries, vrf_id_t vrf_id)
 296 {
 297         struct ospf6_nexthop *nh;
 298         struct listnode *node;
 299         char buf[64];
 300         int i;
 301
 302         if (route) {
 303                 i = 0;
 304                 for (ALL_LIST_ELEMENTS_RO(route->nh_list, node, nh)) {
 305                         if (IS_OSPF6_DEBUG_ZEBRA(SEND)) {
 306                                 const char *ifname;
 307                                 inet_ntop(AF_INET6, &nh->address, buf,
 308                                           sizeof(buf));
 309                                 ifname = ifindex2ifname(nh->ifindex, vrf_id);
 310                                 zlog_debug("  nexthop: %s%%%.*s(%d)", buf,
 311                                            IFNAMSIZ, ifname, nh->ifindex);
 312                         }
 313                         if (i >= entries)
 314                                 return;
 315
 316                         nexthops[i].vrf_id = vrf_id;
 317                         nexthops[i].ifindex = nh->ifindex;
 318                         if (!IN6_IS_ADDR_UNSPECIFIED(&nh->address)) {
 319                                 nexthops[i].gate.ipv6 = nh->address;
 320                                 nexthops[i].type = NEXTHOP_TYPE_IPV6_IFINDEX;
 321                         } else
 322                                 nexthops[i].type = NEXTHOP_TYPE_IFINDEX;
 323                         i++;
 324                 }
 325         }
 326 }
 327
 328 int ospf6_route_get_first_nh_index(struct ospf6_route *route)
 329 {
 330         struct ospf6_nexthop *nh;
 331
 332         if (route) {
 333                 nh = listnode_head(route->nh_list);
 334                 if (nh)
 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(&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 void ospf6_copy_paths(struct list *dst, struct list *src)
 385 {
 386         struct ospf6_path *path_new, *path;
 387         struct listnode *node;
 388
 389         if (dst && src) {
 390                 for (ALL_LIST_ELEMENTS_RO(src, node, path)) {
 391                         path_new = ospf6_path_dup(path);
 392                         ospf6_copy_nexthops(path_new->nh_list, path->nh_list);
 393                         listnode_add_sort(dst, path_new);
 394                 }
 395         }
 396 }
 397
 398 struct ospf6_route *ospf6_route_create(void)
 399 {
 400         struct ospf6_route *route;
 401
 402         route = XCALLOC(MTYPE_OSPF6_ROUTE, sizeof(struct ospf6_route));
 403         route->nh_list = list_new();
 404         route->nh_list->cmp = (int (*)(void *, void *))ospf6_nexthop_cmp;
 405         route->nh_list->del = (void (*)(void *))ospf6_nexthop_delete;
 406         route->paths = list_new();
 407         route->paths->cmp = (int (*)(void *, void *))ospf6_path_cmp;
 408         route->paths->del = (void (*)(void *))ospf6_path_free;
 409         return route;
 410 }
 411
 412 void ospf6_route_delete(struct ospf6_route *route)
 413 {
 414         if (route) {
 415                 if (route->nh_list)
 416                         list_delete(&route->nh_list);
 417                 if (route->paths)
 418                         list_delete(&route->paths);
 419                 XFREE(MTYPE_OSPF6_ROUTE, route);
 420         }
 421 }
 422
 423 struct ospf6_route *ospf6_route_copy(struct ospf6_route *route)
 424 {
 425         struct ospf6_route *new;
 426
 427         new = ospf6_route_create();
 428         new->type = route->type;
 429         memcpy(&new->prefix, &route->prefix, sizeof(struct prefix));
 430         new->installed = route->installed;
 431         new->changed = route->changed;
 432         new->flag = route->flag;
 433         new->route_option = route->route_option;
 434         new->linkstate_id = route->linkstate_id;
 435         new->path = route->path;
 436         ospf6_copy_nexthops(new->nh_list, route->nh_list);
 437         ospf6_copy_paths(new->paths, route->paths);
 438         new->rnode = NULL;
 439         new->prev = NULL;
 440         new->next = NULL;
 441         new->table = NULL;
 442         new->lock = 0;
 443         return new;
 444 }
 445
 446 void ospf6_route_lock(struct ospf6_route *route)
 447 {
 448         route->lock++;
 449 }
 450
 451 void ospf6_route_unlock(struct ospf6_route *route)
 452 {
 453         assert(route->lock > 0);
 454         route->lock--;
 455         if (route->lock == 0) {
 456                 /* Can't detach from the table until here
 457                    because ospf6_route_next () will use
 458                    the 'route->table' pointer for logging */
 459                 route->table = NULL;
 460                 ospf6_route_delete(route);
 461         }
 462 }
 463
 464 /* Route compare function. If ra is more preferred, it returns
 465    less than 0. If rb is more preferred returns greater than 0.
 466    Otherwise (neither one is preferred), returns 0 */
 467 int ospf6_route_cmp(struct ospf6_route *ra, struct ospf6_route *rb)
 468 {
 469         assert(ospf6_route_is_same(ra, rb));
 470         assert(OSPF6_PATH_TYPE_NONE < ra->path.type
 471                && ra->path.type < OSPF6_PATH_TYPE_MAX);
 472         assert(OSPF6_PATH_TYPE_NONE < rb->path.type
 473                && rb->path.type < OSPF6_PATH_TYPE_MAX);
 474
 475         if (ra->type != rb->type)
 476                 return (ra->type - rb->type);
 477
 478         if (ra->path.type != rb->path.type)
 479                 return (ra->path.type - rb->path.type);
 480
 481         if (ra->path.type == OSPF6_PATH_TYPE_EXTERNAL2) {
 482                 if (ra->path.u.cost_e2 != rb->path.u.cost_e2)
 483                         return (ra->path.u.cost_e2 - rb->path.u.cost_e2);
 484                 else
 485                         return (ra->path.cost - rb->path.cost);
 486         } else {
 487                 if (ra->path.cost != rb->path.cost)
 488                         return (ra->path.cost - rb->path.cost);
 489         }
 490
 491         if (ra->path.area_id != rb->path.area_id)
 492                 return (ntohl(ra->path.area_id) - ntohl(rb->path.area_id));
 493
 494         return 0;
 495 }
 496
 497 struct ospf6_route *ospf6_route_lookup(struct prefix *prefix,
 498                                        struct ospf6_route_table *table)
 499 {
 500         struct route_node *node;
 501         struct ospf6_route *route;
 502
 503         node = route_node_lookup(table->table, prefix);
 504         if (node == NULL)
 505                 return NULL;
 506
 507         route = (struct ospf6_route *)node->info;
 508         route_unlock_node(node); /* to free the lookup lock */
 509         return route;
 510 }
 511
 512 struct ospf6_route *
 513 ospf6_route_lookup_identical(struct ospf6_route *route,
 514                              struct ospf6_route_table *table)
 515 {
 516         struct ospf6_route *target;
 517
 518         for (target = ospf6_route_lookup(&route->prefix, table); target;
 519              target = target->next) {
 520                 if (target->type == route->type
 521                     && (memcmp(&target->prefix, &route->prefix,
 522                                sizeof(struct prefix))
 523                         == 0)
 524                     && target->path.type == route->path.type
 525                     && target->path.cost == route->path.cost
 526                     && target->path.u.cost_e2 == route->path.u.cost_e2
 527                     && ospf6_route_cmp_nexthops(target, route) == 0)
 528                         return target;
 529         }
 530         return NULL;
 531 }
 532
 533 struct ospf6_route *
 534 ospf6_route_lookup_bestmatch(struct prefix *prefix,
 535                              struct ospf6_route_table *table)
 536 {
 537         struct route_node *node;
 538         struct ospf6_route *route;
 539
 540         node = route_node_match(table->table, prefix);
 541         if (node == NULL)
 542                 return NULL;
 543         route_unlock_node(node);
 544
 545         route = (struct ospf6_route *)node->info;
 546         return route;
 547 }
 548
 549 #ifdef DEBUG
 550 static void route_table_assert(struct ospf6_route_table *table)
 551 {
 552         struct ospf6_route *prev, *r, *next;
 553         unsigned int link_error = 0, num = 0;
 554
 555         r = ospf6_route_head(table);
 556         prev = NULL;
 557         while (r) {
 558                 if (r->prev != prev)
 559                         link_error++;
 560
 561                 next = ospf6_route_next(r);
 562
 563                 if (r->next != next)
 564                         link_error++;
 565
 566                 prev = r;
 567                 r = next;
 568         }
 569
 570         for (r = ospf6_route_head(table); r; r = ospf6_route_next(r))
 571                 num++;
 572
 573         if (link_error == 0 && num == table->count)
 574                 return;
 575
 576         flog_err(EC_LIB_DEVELOPMENT, "PANIC !!");
 577         flog_err(EC_LIB_DEVELOPMENT,
 578                  "Something has gone wrong with ospf6_route_table[%p]", table);
 579         zlog_debug("table count = %d, real number = %d", table->count, num);
 580         zlog_debug("DUMP START");
 581         for (r = ospf6_route_head(table); r; r = ospf6_route_next(r))
 582                 zlog_info("%p<-[%p]->%p : %pFX", r->prev, r, r->next,
 583                           &r->prefix);
 584         zlog_debug("DUMP END");
 585
 586         assert(link_error == 0 && num == table->count);
 587 }
 588 #define ospf6_route_table_assert(t) (route_table_assert (t))
 589 #else
 590 #define ospf6_route_table_assert(t) ((void) 0)
 591 #endif /*DEBUG*/
 592
 593 struct ospf6_route *ospf6_route_add(struct ospf6_route *route,
 594                                     struct ospf6_route_table *table)
 595 {
 596         struct route_node *node, *nextnode, *prevnode;
 597         struct ospf6_route *current = NULL;
 598         struct ospf6_route *prev = NULL, *old = NULL, *next = NULL;
 599         char buf[PREFIX2STR_BUFFER];
 600         struct timeval now;
 601
 602         assert(route->rnode == NULL);
 603         assert(route->lock == 0);
 604         assert(route->next == NULL);
 605         assert(route->prev == NULL);
 606
 607         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
 608                 ospf6_linkstate_prefix2str(&route->prefix, buf, sizeof(buf));
 609         else
 610                 prefix2str(&route->prefix, buf, sizeof(buf));
 611
 612         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 613                 zlog_debug("%s %p: route add %p: %s paths %u nh %u",
 614                            ospf6_route_table_name(table), (void *)table,
 615                            (void *)route, buf, listcount(route->paths),
 616                            listcount(route->nh_list));
 617         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 618                 zlog_debug("%s: route add: %s", ospf6_route_table_name(table),
 619                            buf);
 620
 621         monotime(&now);
 622
 623         node = route_node_get(table->table, &route->prefix);
 624         route->rnode = node;
 625
 626         /* find place to insert */
 627         for (current = node->info; current; current = current->next) {
 628                 if (!ospf6_route_is_same(current, route))
 629                         next = current;
 630                 else if (current->type != route->type)
 631                         prev = current;
 632                 else if (ospf6_route_is_same_origin(current, route))
 633                         old = current;
 634                 else if (ospf6_route_cmp(current, route) > 0)
 635                         next = current;
 636                 else
 637                         prev = current;
 638
 639                 if (old || next)
 640                         break;
 641         }
 642
 643         if (old) {
 644                 /* if route does not actually change, return unchanged */
 645                 if (ospf6_route_is_identical(old, route)) {
 646                         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 647                                 zlog_debug(
 648                                         "%s %p: route add %p: needless update of %p old cost %u",
 649                                         ospf6_route_table_name(table),
 650                                         (void *)table, (void *)route,
 651                                         (void *)old, old->path.cost);
 652                         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 653                                 zlog_debug("%s: route add: needless update",
 654                                            ospf6_route_table_name(table));
 655
 656                         ospf6_route_delete(route);
 657                         SET_FLAG(old->flag, OSPF6_ROUTE_ADD);
 658                         ospf6_route_table_assert(table);
 659
 660                         /* to free the lookup lock */
 661                         route_unlock_node(node);
 662                         return old;
 663                 }
 664
 665                 if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 666                         zlog_debug(
 667                                 "%s %p: route add %p cost %u paths %u nh %u: update of %p cost %u paths %u nh %u",
 668                                 ospf6_route_table_name(table), (void *)table,
 669                                 (void *)route, route->path.cost,
 670                                 listcount(route->paths),
 671                                 listcount(route->nh_list), (void *)old,
 672                                 old->path.cost, listcount(old->paths),
 673                                 listcount(old->nh_list));
 674                 else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 675                         zlog_debug("%s: route add: update",
 676                                    ospf6_route_table_name(table));
 677
 678                 /* replace old one if exists */
 679                 if (node->info == old) {
 680                         node->info = route;
 681                         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 682                 }
 683
 684                 if (old->prev)
 685                         old->prev->next = route;
 686                 route->prev = old->prev;
 687                 if (old->next)
 688                         old->next->prev = route;
 689                 route->next = old->next;
 690
 691                 route->installed = old->installed;
 692                 route->changed = now;
 693                 assert(route->table == NULL);
 694                 route->table = table;
 695
 696                 ospf6_route_unlock(old); /* will be deleted later */
 697                 ospf6_route_lock(route);
 698
 699                 SET_FLAG(route->flag, OSPF6_ROUTE_CHANGE);
 700                 ospf6_route_table_assert(table);
 701
 702                 if (table->hook_add)
 703                         (*table->hook_add)(route);
 704
 705                 return route;
 706         }
 707
 708         /* insert if previous or next node found */
 709         if (prev || next) {
 710                 if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 711                         zlog_debug(
 712                                 "%s %p: route add %p cost %u: another path: prev %p, next %p node ref %u",
 713                                 ospf6_route_table_name(table), (void *)table,
 714                                 (void *)route, route->path.cost, (void *)prev,
 715                                 (void *)next, route_node_get_lock_count(node));
 716                 else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 717                         zlog_debug("%s: route add cost %u: another path found",
 718                                    ospf6_route_table_name(table),
 719                                    route->path.cost);
 720
 721                 if (prev == NULL)
 722                         prev = next->prev;
 723                 if (next == NULL)
 724                         next = prev->next;
 725
 726                 if (prev)
 727                         prev->next = route;
 728                 route->prev = prev;
 729                 if (next)
 730                         next->prev = route;
 731                 route->next = next;
 732
 733                 if (node->info == next) {
 734                         assert(next && next->rnode == node);
 735                         node->info = route;
 736                         UNSET_FLAG(next->flag, OSPF6_ROUTE_BEST);
 737                         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 738                         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 739                                 zlog_info(
 740                                         "%s %p: route add %p cost %u: replacing previous best: %p cost %u",
 741                                         ospf6_route_table_name(table),
 742                                         (void *)table, (void *)route,
 743                                         route->path.cost,
 744                                         (void *)next, next->path.cost);
 745                 }
 746
 747                 route->installed = now;
 748                 route->changed = now;
 749                 assert(route->table == NULL);
 750                 route->table = table;
 751
 752                 ospf6_route_lock(route);
 753                 table->count++;
 754                 ospf6_route_table_assert(table);
 755
 756                 SET_FLAG(route->flag, OSPF6_ROUTE_ADD);
 757                 if (table->hook_add)
 758                         (*table->hook_add)(route);
 759
 760                 return route;
 761         }
 762
 763         /* Else, this is the brand new route regarding to the prefix */
 764         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 765                 zlog_debug("%s %p: route add %p %s cost %u: brand new route",
 766                            ospf6_route_table_name(table), (void *)table,
 767                            (void *)route, buf, route->path.cost);
 768         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 769                 zlog_debug("%s: route add: brand new route",
 770                            ospf6_route_table_name(table));
 771
 772         assert(node->info == NULL);
 773         node->info = route;
 774         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 775         ospf6_route_lock(route);
 776         route->installed = now;
 777         route->changed = now;
 778         assert(route->table == NULL);
 779         route->table = table;
 780
 781         /* lookup real existing next route */
 782         nextnode = node;
 783         route_lock_node(nextnode);
 784         do {
 785                 nextnode = route_next(nextnode);
 786         } while (nextnode && nextnode->info == NULL);
 787
 788         /* set next link */
 789         if (nextnode == NULL)
 790                 route->next = NULL;
 791         else {
 792                 route_unlock_node(nextnode);
 793
 794                 next = nextnode->info;
 795                 route->next = next;
 796                 next->prev = route;
 797         }
 798
 799         /* lookup real existing prev route */
 800         prevnode = node;
 801         route_lock_node(prevnode);
 802         do {
 803                 prevnode = route_prev(prevnode);
 804         } while (prevnode && prevnode->info == NULL);
 805
 806         /* set prev link */
 807         if (prevnode == NULL)
 808                 route->prev = NULL;
 809         else {
 810                 route_unlock_node(prevnode);
 811
 812                 prev = prevnode->info;
 813                 while (prev->next && ospf6_route_is_same(prev, prev->next))
 814                         prev = prev->next;
 815                 route->prev = prev;
 816                 prev->next = route;
 817         }
 818
 819         table->count++;
 820         ospf6_route_table_assert(table);
 821
 822         SET_FLAG(route->flag, OSPF6_ROUTE_ADD);
 823         if (table->hook_add)
 824                 (*table->hook_add)(route);
 825
 826         return route;
 827 }
 828
 829 void ospf6_route_remove(struct ospf6_route *route,
 830                         struct ospf6_route_table *table)
 831 {
 832         struct route_node *node;
 833         struct ospf6_route *current;
 834         char buf[PREFIX2STR_BUFFER];
 835
 836         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
 837                 ospf6_linkstate_prefix2str(&route->prefix, buf, sizeof(buf));
 838         else
 839                 prefix2str(&route->prefix, buf, sizeof(buf));
 840
 841         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 842                 zlog_debug("%s %p: route remove %p: %s cost %u refcount %u",
 843                            ospf6_route_table_name(table), (void *)table,
 844                            (void *)route, buf, route->path.cost, route->lock);
 845         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 846                 zlog_debug("%s: route remove: %s",
 847                            ospf6_route_table_name(table), buf);
 848
 849         node = route_node_lookup(table->table, &route->prefix);
 850         assert(node);
 851
 852         /* find the route to remove, making sure that the route pointer
 853            is from the route table. */
 854         current = node->info;
 855         while (current && current != route)
 856                 current = current->next;
 857
 858         assert(current == route);
 859
 860         /* adjust doubly linked list */
 861         if (route->prev)
 862                 route->prev->next = route->next;
 863         if (route->next)
 864                 route->next->prev = route->prev;
 865
 866         if (node->info == route) {
 867                 if (route->next && route->next->rnode == node) {
 868                         node->info = route->next;
 869                         SET_FLAG(route->next->flag, OSPF6_ROUTE_BEST);
 870                 } else {
 871                         node->info = NULL;
 872                         route->rnode = NULL;
 873                         route_unlock_node(node); /* to free the original lock */
 874                 }
 875         }
 876
 877         route_unlock_node(node); /* to free the lookup lock */
 878         table->count--;
 879         ospf6_route_table_assert(table);
 880
 881         SET_FLAG(route->flag, OSPF6_ROUTE_WAS_REMOVED);
 882
 883         /* Note hook_remove may call ospf6_route_remove */
 884         if (table->hook_remove)
 885                 (*table->hook_remove)(route);
 886
 887         ospf6_route_unlock(route);
 888 }
 889
 890 struct ospf6_route *ospf6_route_head(struct ospf6_route_table *table)
 891 {
 892         struct route_node *node;
 893         struct ospf6_route *route;
 894
 895         node = route_top(table->table);
 896         if (node == NULL)
 897                 return NULL;
 898
 899         /* skip to the real existing entry */
 900         while (node && node->info == NULL)
 901                 node = route_next(node);
 902         if (node == NULL)
 903                 return NULL;
 904
 905         route_unlock_node(node);
 906         assert(node->info);
 907
 908         route = (struct ospf6_route *)node->info;
 909         assert(route->prev == NULL);
 910         assert(route->table == table);
 911         ospf6_route_lock(route);
 912
 913         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 914                 zlog_info("%s %p: route head: %p<-[%p]->%p",
 915                           ospf6_route_table_name(table), (void *)table,
 916                           (void *)route->prev, (void *)route,
 917                           (void *)route->next);
 918
 919         return route;
 920 }
 921
 922 struct ospf6_route *ospf6_route_next(struct ospf6_route *route)
 923 {
 924         struct ospf6_route *next = route->next;
 925
 926         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 927                 zlog_info("%s %p: route next: %p<-[%p]->%p , route ref count %u",
 928                           ospf6_route_table_name(route->table),
 929                           (void *)route->table, (void *)route->prev,
 930                           (void *)route, (void *)route->next,
 931                           route->lock);
 932
 933         ospf6_route_unlock(route);
 934         if (next)
 935                 ospf6_route_lock(next);
 936
 937         return next;
 938 }
 939
 940 struct ospf6_route *ospf6_route_best_next(struct ospf6_route *route)
 941 {
 942         struct route_node *rnode;
 943         struct ospf6_route *next;
 944
 945         ospf6_route_unlock(route);
 946
 947         rnode = route->rnode;
 948         route_lock_node(rnode);
 949         rnode = route_next(rnode);
 950         while (rnode && rnode->info == NULL)
 951                 rnode = route_next(rnode);
 952         if (rnode == NULL)
 953                 return NULL;
 954         route_unlock_node(rnode);
 955
 956         assert(rnode->info);
 957         next = (struct ospf6_route *)rnode->info;
 958         ospf6_route_lock(next);
 959         return next;
 960 }
 961
 962 struct ospf6_route *ospf6_route_match_head(struct prefix *prefix,
 963                                            struct ospf6_route_table *table)
 964 {
 965         struct route_node *node;
 966         struct ospf6_route *route;
 967
 968         /* Walk down tree. */
 969         node = table->table->top;
 970         while (node && node->p.prefixlen < prefix->prefixlen
 971                && prefix_match(&node->p, prefix))
 972                 node = node->link[prefix_bit(&prefix->u.prefix,
 973                                              node->p.prefixlen)];
 974
 975         if (node)
 976                 route_lock_node(node);
 977         while (node && node->info == NULL)
 978                 node = route_next(node);
 979         if (node == NULL)
 980                 return NULL;
 981         route_unlock_node(node);
 982
 983         if (!prefix_match(prefix, &node->p))
 984                 return NULL;
 985
 986         route = node->info;
 987         ospf6_route_lock(route);
 988         return route;
 989 }
 990
 991 struct ospf6_route *ospf6_route_match_next(struct prefix *prefix,
 992                                            struct ospf6_route *route)
 993 {
 994         struct ospf6_route *next;
 995
 996         next = ospf6_route_next(route);
 997         if (next && !prefix_match(prefix, &next->prefix)) {
 998                 ospf6_route_unlock(next);
 999                 next = NULL;
1000         }
1001
1002         return next;
1003 }
1004
1005 void ospf6_route_remove_all(struct ospf6_route_table *table)
1006 {
1007         struct ospf6_route *route;
1008         for (route = ospf6_route_head(table); route;
1009              route = ospf6_route_next(route))
1010                 ospf6_route_remove(route, table);
1011 }
1012
1013 struct ospf6_route_table *ospf6_route_table_create(int s, int t)
1014 {
1015         struct ospf6_route_table *new;
1016         new = XCALLOC(MTYPE_OSPF6_ROUTE, sizeof(struct ospf6_route_table));
1017         new->table = route_table_init();
1018         new->scope_type = s;
1019         new->table_type = t;
1020         return new;
1021 }
1022
1023 void ospf6_route_table_delete(struct ospf6_route_table *table)
1024 {
1025         ospf6_route_remove_all(table);
1026         bf_free(table->idspace);
1027         route_table_finish(table->table);
1028         XFREE(MTYPE_OSPF6_ROUTE, table);
1029 }
1030
1031
1032 /* VTY commands */
1033 void ospf6_route_show(struct vty *vty, struct ospf6_route *route)
1034 {
1035         int i;
1036         char destination[PREFIX2STR_BUFFER], nexthop[64];
1037         char duration[64];
1038         struct timeval now, res;
1039         struct listnode *node;
1040         struct ospf6_nexthop *nh;
1041
1042         if (om6->ospf6 == NULL) {
1043                 vty_out(vty, "OSPFv3 is not running\n");
1044                 return;
1045         }
1046
1047         monotime(&now);
1048         timersub(&now, &route->changed, &res);
1049         timerstring(&res, duration, sizeof(duration));
1050
1051         /* destination */
1052         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
1053                 ospf6_linkstate_prefix2str(&route->prefix, destination,
1054                                            sizeof(destination));
1055         else if (route->type == OSPF6_DEST_TYPE_ROUTER)
1056                 inet_ntop(route->prefix.family, &route->prefix.u.prefix,
1057                           destination, sizeof(destination));
1058         else
1059                 prefix2str(&route->prefix, destination, sizeof(destination));
1060
1061         i = 0;
1062         for (ALL_LIST_ELEMENTS_RO(route->nh_list, node, nh)) {
1063                 struct interface *ifp;
1064                 /* nexthop */
1065                 inet_ntop(AF_INET6, &nh->address, nexthop, sizeof(nexthop));
1066                 ifp = if_lookup_by_index_all_vrf(nh->ifindex);
1067                 if (!i) {
1068                         vty_out(vty, "%c%1s %2s %-30s %-25s %6.*s %s\n",
1069                                 (ospf6_route_is_best(route) ? '*' : ' '),
1070                                 OSPF6_DEST_TYPE_SUBSTR(route->type),
1071                                 OSPF6_PATH_TYPE_SUBSTR(route->path.type),
1072                                 destination, nexthop, IFNAMSIZ, ifp->name,
1073                                 duration);
1074                         i++;
1075                 } else
1076                         vty_out(vty, "%c%1s %2s %-30s %-25s %6.*s %s\n", ' ',
1077                                 "", "", "", nexthop, IFNAMSIZ, ifp->name, "");
1078         }
1079 }
1080
1081 void ospf6_route_show_detail(struct vty *vty, struct ospf6_route *route)
1082 {
1083         char destination[PREFIX2STR_BUFFER];
1084         char area_id[16], id[16], adv_router[16], capa[16], options[16];
1085         struct timeval now, res;
1086         char duration[64];
1087         struct listnode *node;
1088         struct ospf6_nexthop *nh;
1089
1090         if (om6->ospf6 == NULL) {
1091                 vty_out(vty, "OSPFv3 is not running\n");
1092                 return;
1093         }
1094
1095         monotime(&now);
1096
1097         /* destination */
1098         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
1099                 ospf6_linkstate_prefix2str(&route->prefix, destination,
1100                                            sizeof(destination));
1101         else if (route->type == OSPF6_DEST_TYPE_ROUTER)
1102                 inet_ntop(route->prefix.family, &route->prefix.u.prefix,
1103                           destination, sizeof(destination));
1104         else
1105                 prefix2str(&route->prefix, destination, sizeof(destination));
1106         vty_out(vty, "Destination: %s\n", destination);
1107
1108         /* destination type */
1109         vty_out(vty, "Destination type: %s\n",
1110                 OSPF6_DEST_TYPE_NAME(route->type));
1111
1112         /* Time */
1113         timersub(&now, &route->installed, &res);
1114         timerstring(&res, duration, sizeof(duration));
1115         vty_out(vty, "Installed Time: %s ago\n", duration);
1116
1117         timersub(&now, &route->changed, &res);
1118         timerstring(&res, duration, sizeof(duration));
1119         vty_out(vty, "  Changed Time: %s ago\n", duration);
1120
1121         /* Debugging info */
1122         vty_out(vty, "Lock: %d Flags: %s%s%s%s\n", route->lock,
1123                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST) ? "B" : "-"),
1124                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_ADD) ? "A" : "-"),
1125                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_REMOVE) ? "R" : "-"),
1126                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_CHANGE) ? "C" : "-"));
1127         vty_out(vty, "Memory: prev: %p this: %p next: %p\n",
1128                 (void *)route->prev, (void *)route, (void *)route->next);
1129
1130         /* Path section */
1131
1132         /* Area-ID */
1133         inet_ntop(AF_INET, &route->path.area_id, area_id, sizeof(area_id));
1134         vty_out(vty, "Associated Area: %s\n", area_id);
1135
1136         /* Path type */
1137         vty_out(vty, "Path Type: %s\n", OSPF6_PATH_TYPE_NAME(route->path.type));
1138
1139         /* LS Origin */
1140         inet_ntop(AF_INET, &route->path.origin.id, id, sizeof(id));
1141         inet_ntop(AF_INET, &route->path.origin.adv_router, adv_router,
1142                   sizeof(adv_router));
1143         vty_out(vty, "LS Origin: %s Id: %s Adv: %s\n",
1144                 ospf6_lstype_name(route->path.origin.type), id, adv_router);
1145
1146         /* Options */
1147         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1148         vty_out(vty, "Options: %s\n", options);
1149
1150         /* Router Bits */
1151         ospf6_capability_printbuf(route->path.router_bits, capa, sizeof(capa));
1152         vty_out(vty, "Router Bits: %s\n", capa);
1153
1154         /* Prefix Options */
1155         vty_out(vty, "Prefix Options: xxx\n");
1156
1157         /* Metrics */
1158         vty_out(vty, "Metric Type: %d\n", route->path.metric_type);
1159         vty_out(vty, "Metric: %d (%d)\n", route->path.cost,
1160                 route->path.u.cost_e2);
1161
1162         vty_out(vty, "Paths count: %u\n", route->paths->count);
1163         vty_out(vty, "Nexthop count: %u\n", route->nh_list->count);
1164         /* Nexthops */
1165         vty_out(vty, "Nexthop:\n");
1166         for (ALL_LIST_ELEMENTS_RO(route->nh_list, node, nh)) {
1167                 struct interface *ifp;
1168                 /* nexthop */
1169
1170                 ifp = if_lookup_by_index_all_vrf(nh->ifindex);
1171                 vty_out(vty, "  %pI6 %.*s\n", &nh->address, IFNAMSIZ, ifp->name);
1172         }
1173         vty_out(vty, "\n");
1174 }
1175
1176 static void ospf6_route_show_table_summary(struct vty *vty,
1177                                            struct ospf6_route_table *table)
1178 {
1179         struct ospf6_route *route, *prev = NULL;
1180         int i, pathtype[OSPF6_PATH_TYPE_MAX];
1181         unsigned int number = 0;
1182         int nh_count = 0, nhinval = 0, ecmp = 0;
1183         int alternative = 0, destination = 0;
1184
1185         for (i = 0; i < OSPF6_PATH_TYPE_MAX; i++)
1186                 pathtype[i] = 0;
1187
1188         for (route = ospf6_route_head(table); route;
1189              route = ospf6_route_next(route)) {
1190                 if (prev == NULL || !ospf6_route_is_same(prev, route))
1191                         destination++;
1192                 else
1193                         alternative++;
1194                 nh_count = ospf6_num_nexthops(route->nh_list);
1195                 if (!nh_count)
1196                         nhinval++;
1197                 else if (nh_count > 1)
1198                         ecmp++;
1199                 pathtype[route->path.type]++;
1200                 number++;
1201
1202                 prev = route;
1203         }
1204
1205         assert(number == table->count);
1206
1207         vty_out(vty, "Number of OSPFv3 routes: %d\n", number);
1208         vty_out(vty, "Number of Destination: %d\n", destination);
1209         vty_out(vty, "Number of Alternative routes: %d\n", alternative);
1210         vty_out(vty, "Number of Equal Cost Multi Path: %d\n", ecmp);
1211         for (i = OSPF6_PATH_TYPE_INTRA; i <= OSPF6_PATH_TYPE_EXTERNAL2; i++) {
1212                 vty_out(vty, "Number of %s routes: %d\n",
1213                         OSPF6_PATH_TYPE_NAME(i), pathtype[i]);
1214         }
1215 }
1216
1217 static void ospf6_route_show_table_prefix(struct vty *vty,
1218                                           struct prefix *prefix,
1219                                           struct ospf6_route_table *table)
1220 {
1221         struct ospf6_route *route;
1222
1223         route = ospf6_route_lookup(prefix, table);
1224         if (route == NULL)
1225                 return;
1226
1227         ospf6_route_lock(route);
1228         while (route && ospf6_route_is_prefix(prefix, route)) {
1229                 /* Specifying a prefix will always display details */
1230                 ospf6_route_show_detail(vty, route);
1231                 route = ospf6_route_next(route);
1232         }
1233         if (route)
1234                 ospf6_route_unlock(route);
1235 }
1236
1237 static void ospf6_route_show_table_address(struct vty *vty,
1238                                            struct prefix *prefix,
1239                                            struct ospf6_route_table *table)
1240 {
1241         struct ospf6_route *route;
1242
1243         route = ospf6_route_lookup_bestmatch(prefix, table);
1244         if (route == NULL)
1245                 return;
1246
1247         prefix = &route->prefix;
1248         ospf6_route_lock(route);
1249         while (route && ospf6_route_is_prefix(prefix, route)) {
1250                 /* Specifying a prefix will always display details */
1251                 ospf6_route_show_detail(vty, route);
1252                 route = ospf6_route_next(route);
1253         }
1254         if (route)
1255                 ospf6_route_unlock(route);
1256 }
1257
1258 static void ospf6_route_show_table_match(struct vty *vty, int detail,
1259                                          struct prefix *prefix,
1260                                          struct ospf6_route_table *table)
1261 {
1262         struct ospf6_route *route;
1263         assert(prefix->family);
1264
1265         route = ospf6_route_match_head(prefix, table);
1266         while (route) {
1267                 if (detail)
1268                         ospf6_route_show_detail(vty, route);
1269                 else
1270                         ospf6_route_show(vty, route);
1271                 route = ospf6_route_match_next(prefix, route);
1272         }
1273 }
1274
1275 static void ospf6_route_show_table_type(struct vty *vty, int detail,
1276                                         uint8_t type,
1277                                         struct ospf6_route_table *table)
1278 {
1279         struct ospf6_route *route;
1280
1281         route = ospf6_route_head(table);
1282         while (route) {
1283                 if (route->path.type == type) {
1284                         if (detail)
1285                                 ospf6_route_show_detail(vty, route);
1286                         else
1287                                 ospf6_route_show(vty, route);
1288                 }
1289                 route = ospf6_route_next(route);
1290         }
1291 }
1292
1293 static void ospf6_route_show_table(struct vty *vty, int detail,
1294                                    struct ospf6_route_table *table)
1295 {
1296         struct ospf6_route *route;
1297
1298         route = ospf6_route_head(table);
1299         while (route) {
1300                 if (detail)
1301                         ospf6_route_show_detail(vty, route);
1302                 else
1303                         ospf6_route_show(vty, route);
1304                 route = ospf6_route_next(route);
1305         }
1306 }
1307
1308 int ospf6_route_table_show(struct vty *vty, int argc_start, int argc,
1309                            struct cmd_token **argv,
1310                            struct ospf6_route_table *table)
1311 {
1312         int summary = 0;
1313         int match = 0;
1314         int detail = 0;
1315         int slash = 0;
1316         int isprefix = 0;
1317         int i, ret;
1318         struct prefix prefix;
1319         uint8_t type = 0;
1320
1321         memset(&prefix, 0, sizeof(struct prefix));
1322
1323         for (i = argc_start; i < argc; i++) {
1324                 if (strmatch(argv[i]->text, "summary")) {
1325                         summary++;
1326                         continue;
1327                 }
1328
1329                 if (strmatch(argv[i]->text, "intra-area")) {
1330                         type = OSPF6_PATH_TYPE_INTRA;
1331                         continue;
1332                 }
1333
1334                 if (strmatch(argv[i]->text, "inter-area")) {
1335                         type = OSPF6_PATH_TYPE_INTER;
1336                         continue;
1337                 }
1338
1339                 if (strmatch(argv[i]->text, "external-1")) {
1340                         type = OSPF6_PATH_TYPE_EXTERNAL1;
1341                         continue;
1342                 }
1343
1344                 if (strmatch(argv[i]->text, "external-2")) {
1345                         type = OSPF6_PATH_TYPE_EXTERNAL2;
1346                         continue;
1347                 }
1348
1349                 if (strmatch(argv[i]->text, "detail")) {
1350                         detail++;
1351                         continue;
1352                 }
1353
1354                 if (strmatch(argv[i]->text, "match")) {
1355                         match++;
1356                         continue;
1357                 }
1358
1359                 ret = str2prefix(argv[i]->arg, &prefix);
1360                 if (ret == 1 && prefix.family == AF_INET6) {
1361                         isprefix++;
1362                         if (strchr(argv[i]->arg, '/'))
1363                                 slash++;
1364                         continue;
1365                 }
1366
1367                 vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1368                 return CMD_SUCCESS;
1369         }
1370
1371         /* Give summary of this route table */
1372         if (summary) {
1373                 ospf6_route_show_table_summary(vty, table);
1374                 return CMD_SUCCESS;
1375         }
1376
1377         /* Give exact prefix-match route */
1378         if (isprefix && !match) {
1379                 /* If exact address, give best matching route */
1380                 if (!slash)
1381                         ospf6_route_show_table_address(vty, &prefix, table);
1382                 else
1383                         ospf6_route_show_table_prefix(vty, &prefix, table);
1384
1385                 return CMD_SUCCESS;
1386         }
1387
1388         if (match)
1389                 ospf6_route_show_table_match(vty, detail, &prefix, table);
1390         else if (type)
1391                 ospf6_route_show_table_type(vty, detail, type, table);
1392         else
1393                 ospf6_route_show_table(vty, detail, table);
1394
1395         return CMD_SUCCESS;
1396 }
1397
1398 static void ospf6_linkstate_show_header(struct vty *vty)
1399 {
1400         vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %s\n", "Type", "Router-ID",
1401                 "Net-ID", "Rtr-Bits", "Options", "Cost");
1402 }
1403
1404 static void ospf6_linkstate_show(struct vty *vty, struct ospf6_route *route)
1405 {
1406         uint32_t router, id;
1407         char routername[16], idname[16], rbits[16], options[16];
1408
1409         router = ospf6_linkstate_prefix_adv_router(&route->prefix);
1410         inet_ntop(AF_INET, &router, routername, sizeof(routername));
1411         id = ospf6_linkstate_prefix_id(&route->prefix);
1412         inet_ntop(AF_INET, &id, idname, sizeof(idname));
1413
1414         ospf6_capability_printbuf(route->path.router_bits, rbits,
1415                                   sizeof(rbits));
1416         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1417
1418         if (ntohl(id))
1419                 vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %lu\n", "Network",
1420                         routername, idname, rbits, options,
1421                         (unsigned long)route->path.cost);
1422         else
1423                 vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %lu\n", "Router",
1424                         routername, idname, rbits, options,
1425                         (unsigned long)route->path.cost);
1426 }
1427
1428
1429 static void ospf6_linkstate_show_table_exact(struct vty *vty,
1430                                              struct prefix *prefix,
1431                                              struct ospf6_route_table *table)
1432 {
1433         struct ospf6_route *route;
1434
1435         route = ospf6_route_lookup(prefix, table);
1436         if (route == NULL)
1437                 return;
1438
1439         ospf6_route_lock(route);
1440         while (route && ospf6_route_is_prefix(prefix, route)) {
1441                 /* Specifying a prefix will always display details */
1442                 ospf6_route_show_detail(vty, route);
1443                 route = ospf6_route_next(route);
1444         }
1445         if (route)
1446                 ospf6_route_unlock(route);
1447 }
1448
1449 static void ospf6_linkstate_show_table(struct vty *vty, int detail,
1450                                        struct ospf6_route_table *table)
1451 {
1452         struct ospf6_route *route;
1453
1454         if (!detail)
1455                 ospf6_linkstate_show_header(vty);
1456
1457         route = ospf6_route_head(table);
1458         while (route) {
1459                 if (detail)
1460                         ospf6_route_show_detail(vty, route);
1461                 else
1462                         ospf6_linkstate_show(vty, route);
1463                 route = ospf6_route_next(route);
1464         }
1465 }
1466
1467 int ospf6_linkstate_table_show(struct vty *vty, int idx_ipv4, int argc,
1468                                struct cmd_token **argv,
1469                                struct ospf6_route_table *table)
1470 {
1471         int detail = 0;
1472         int is_id = 0;
1473         int is_router = 0;
1474         int i, ret;
1475         struct prefix router, id, prefix;
1476
1477         memset(&router, 0, sizeof(struct prefix));
1478         memset(&id, 0, sizeof(struct prefix));
1479         memset(&prefix, 0, sizeof(struct prefix));
1480
1481         for (i = idx_ipv4; i < argc; i++) {
1482                 if (strmatch(argv[i]->text, "detail")) {
1483                         detail++;
1484                         continue;
1485                 }
1486
1487                 if (!is_router) {
1488                         ret = str2prefix(argv[i]->arg, &router);
1489                         if (ret == 1 && router.family == AF_INET) {
1490                                 is_router++;
1491                                 continue;
1492                         }
1493                         vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1494                         return CMD_SUCCESS;
1495                 }
1496
1497                 if (!is_id) {
1498                         ret = str2prefix(argv[i]->arg, &id);
1499                         if (ret == 1 && id.family == AF_INET) {
1500                                 is_id++;
1501                                 continue;
1502                         }
1503                         vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1504                         return CMD_SUCCESS;
1505                 }
1506
1507                 vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1508                 return CMD_SUCCESS;
1509         }
1510
1511         if (is_router)
1512                 ospf6_linkstate_prefix(router.u.prefix4.s_addr,
1513                                        id.u.prefix4.s_addr, &prefix);
1514
1515         if (prefix.family)
1516                 ospf6_linkstate_show_table_exact(vty, &prefix, table);
1517         else
1518                 ospf6_linkstate_show_table(vty, detail, table);
1519
1520         return CMD_SUCCESS;
1521 }
1522
1523
1524 void ospf6_brouter_show_header(struct vty *vty)
1525 {
1526         vty_out(vty, "%-15s %-8s %-14s %-10s %-15s\n", "Router-ID", "Rtr-Bits",
1527                 "Options", "Path-Type", "Area");
1528 }
1529
1530 void ospf6_brouter_show(struct vty *vty, struct ospf6_route *route)
1531 {
1532         uint32_t adv_router;
1533         char adv[16], rbits[16], options[16], area[16];
1534
1535         adv_router = ospf6_linkstate_prefix_adv_router(&route->prefix);
1536         inet_ntop(AF_INET, &adv_router, adv, sizeof(adv));
1537         ospf6_capability_printbuf(route->path.router_bits, rbits,
1538                                   sizeof(rbits));
1539         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1540         inet_ntop(AF_INET, &route->path.area_id, area, sizeof(area));
1541
1542         /* vty_out (vty, "%-15s %-8s %-14s %-10s %-15s\n",
1543                  "Router-ID", "Rtr-Bits", "Options", "Path-Type", "Area"); */
1544         vty_out(vty, "%-15s %-8s %-14s %-10s %-15s\n", adv, rbits, options,
1545                 OSPF6_PATH_TYPE_NAME(route->path.type), area);
1546 }
1547
1548 DEFUN (debug_ospf6_route,
1549        debug_ospf6_route_cmd,
1550        "debug ospf6 route <table|intra-area|inter-area|memory>",
1551        DEBUG_STR
1552        OSPF6_STR
1553        "Debug routes\n"
1554        "Debug route table calculation\n"
1555        "Debug intra-area route calculation\n"
1556        "Debug inter-area route calculation\n"
1557        "Debug route memory use\n"
1558        )
1559 {
1560         int idx_type = 3;
1561         unsigned char level = 0;
1562
1563         if (!strcmp(argv[idx_type]->text, "table"))
1564                 level = OSPF6_DEBUG_ROUTE_TABLE;
1565         else if (!strcmp(argv[idx_type]->text, "intra-area"))
1566                 level = OSPF6_DEBUG_ROUTE_INTRA;
1567         else if (!strcmp(argv[idx_type]->text, "inter-area"))
1568                 level = OSPF6_DEBUG_ROUTE_INTER;
1569         else if (!strcmp(argv[idx_type]->text, "memory"))
1570                 level = OSPF6_DEBUG_ROUTE_MEMORY;
1571         OSPF6_DEBUG_ROUTE_ON(level);
1572         return CMD_SUCCESS;
1573 }
1574
1575 DEFUN (no_debug_ospf6_route,
1576        no_debug_ospf6_route_cmd,
1577        "no debug ospf6 route <table|intra-area|inter-area|memory>",
1578        NO_STR
1579        DEBUG_STR
1580        OSPF6_STR
1581        "Debug routes\n"
1582        "Debug route table calculation\n"
1583        "Debug intra-area route calculation\n"
1584        "Debug inter-area route calculation\n"
1585        "Debug route memory use\n")
1586 {
1587         int idx_type = 4;
1588         unsigned char level = 0;
1589
1590         if (!strcmp(argv[idx_type]->text, "table"))
1591                 level = OSPF6_DEBUG_ROUTE_TABLE;
1592         else if (!strcmp(argv[idx_type]->text, "intra-area"))
1593                 level = OSPF6_DEBUG_ROUTE_INTRA;
1594         else if (!strcmp(argv[idx_type]->text, "inter-area"))
1595                 level = OSPF6_DEBUG_ROUTE_INTER;
1596         else if (!strcmp(argv[idx_type]->text, "memory"))
1597                 level = OSPF6_DEBUG_ROUTE_MEMORY;
1598         OSPF6_DEBUG_ROUTE_OFF(level);
1599         return CMD_SUCCESS;
1600 }
1601
1602 int config_write_ospf6_debug_route(struct vty *vty)
1603 {
1604         if (IS_OSPF6_DEBUG_ROUTE(TABLE))
1605                 vty_out(vty, "debug ospf6 route table\n");
1606         if (IS_OSPF6_DEBUG_ROUTE(INTRA))
1607                 vty_out(vty, "debug ospf6 route intra-area\n");
1608         if (IS_OSPF6_DEBUG_ROUTE(INTER))
1609                 vty_out(vty, "debug ospf6 route inter-area\n");
1610         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
1611                 vty_out(vty, "debug ospf6 route memory\n");
1612
1613         return 0;
1614 }
1615
1616 void install_element_ospf6_debug_route(void)
1617 {
1618         install_element(ENABLE_NODE, &debug_ospf6_route_cmd);
1619         install_element(ENABLE_NODE, &no_debug_ospf6_route_cmd);
1620         install_element(CONFIG_NODE, &debug_ospf6_route_cmd);
1621         install_element(CONFIG_NODE, &no_debug_ospf6_route_cmd);
1622 }