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 *ospf6_dest_type_str[OSPF6_DEST_TYPE_MAX] = {
 151         "Unknown", "Router", "Network", "Discard", "Linkstate", "AddressRange",
 152 };
 153
 154 const char *ospf6_dest_type_substr[OSPF6_DEST_TYPE_MAX] = {
 155         "?", "R", "N", "D", "L", "A",
 156 };
 157
 158 const char *ospf6_path_type_str[OSPF6_PATH_TYPE_MAX] = {
 159         "Unknown", "Intra-Area", "Inter-Area", "External-1", "External-2",
 160 };
 161
 162 const char *ospf6_path_type_substr[OSPF6_PATH_TYPE_MAX] = {
 163         "??", "IA", "IE", "E1", "E2",
 164 };
 165
 166
 167 struct ospf6_nexthop *ospf6_nexthop_create(void)
 168 {
 169         struct ospf6_nexthop *nh;
 170
 171         nh = XCALLOC(MTYPE_OSPF6_NEXTHOP, sizeof(struct ospf6_nexthop));
 172         return nh;
 173 }
 174
 175 void ospf6_nexthop_delete(struct ospf6_nexthop *nh)
 176 {
 177         if (nh)
 178                 XFREE(MTYPE_OSPF6_NEXTHOP, nh);
 179 }
 180
 181 void ospf6_clear_nexthops(struct list *nh_list)
 182 {
 183         struct listnode *node;
 184         struct ospf6_nexthop *nh;
 185
 186         if (nh_list) {
 187                 for (ALL_LIST_ELEMENTS_RO(nh_list, node, nh))
 188                         ospf6_nexthop_clear(nh);
 189         }
 190 }
 191
 192 static struct ospf6_nexthop *
 193 ospf6_route_find_nexthop(struct list *nh_list, struct ospf6_nexthop *nh_match)
 194 {
 195         struct listnode *node;
 196         struct ospf6_nexthop *nh;
 197
 198         if (nh_list && nh_match) {
 199                 for (ALL_LIST_ELEMENTS_RO(nh_list, node, nh)) {
 200                         if (ospf6_nexthop_is_same(nh, nh_match))
 201                                 return (nh);
 202                 }
 203         }
 204
 205         return (NULL);
 206 }
 207
 208 void ospf6_copy_nexthops(struct list *dst, struct list *src)
 209 {
 210         struct ospf6_nexthop *nh_new, *nh;
 211         struct listnode *node;
 212
 213         if (dst && src) {
 214                 for (ALL_LIST_ELEMENTS_RO(src, node, nh)) {
 215                         if (ospf6_nexthop_is_set(nh)) {
 216                                 nh_new = ospf6_nexthop_create();
 217                                 ospf6_nexthop_copy(nh_new, nh);
 218                                 listnode_add_sort(dst, nh_new);
 219                         }
 220                 }
 221         }
 222 }
 223
 224 void ospf6_merge_nexthops(struct list *dst, struct list *src)
 225 {
 226         struct listnode *node;
 227         struct ospf6_nexthop *nh, *nh_new;
 228
 229         if (src && dst) {
 230                 for (ALL_LIST_ELEMENTS_RO(src, node, nh)) {
 231                         if (!ospf6_route_find_nexthop(dst, nh)) {
 232                                 nh_new = ospf6_nexthop_create();
 233                                 ospf6_nexthop_copy(nh_new, nh);
 234                                 listnode_add_sort(dst, nh_new);
 235                         }
 236                 }
 237         }
 238 }
 239
 240 int ospf6_route_cmp_nexthops(struct ospf6_route *a, struct ospf6_route *b)
 241 {
 242         struct listnode *anode, *bnode;
 243         struct ospf6_nexthop *anh, *bnh;
 244         bool identical = false;
 245
 246         if (a && b) {
 247                 if (listcount(a->nh_list) == listcount(b->nh_list)) {
 248                         for (ALL_LIST_ELEMENTS_RO(a->nh_list, anode, anh)) {
 249                                 identical = false;
 250                                 for (ALL_LIST_ELEMENTS_RO(b->nh_list, bnode,
 251                                                           bnh)) {
 252                                         if (ospf6_nexthop_is_same(anh, bnh))
 253                                                 identical = true;
 254                                 }
 255                                 /* Currnet List A element not found List B
 256                                  * Non-Identical lists return */
 257                                 if (identical == false)
 258                                         return 1;
 259                         }
 260                         return 0;
 261                 } else
 262                         return 1;
 263         }
 264         /* One of the routes doesn't exist ? */
 265         return (1);
 266 }
 267
 268 int ospf6_num_nexthops(struct list *nh_list)
 269 {
 270         return (listcount(nh_list));
 271 }
 272
 273 void ospf6_add_nexthop(struct list *nh_list, int ifindex, struct in6_addr *addr)
 274 {
 275         struct ospf6_nexthop *nh;
 276         struct ospf6_nexthop nh_match;
 277
 278         if (nh_list) {
 279                 nh_match.ifindex = ifindex;
 280                 if (addr != NULL)
 281                         memcpy(&nh_match.address, addr,
 282                                sizeof(struct in6_addr));
 283                 else
 284                         memset(&nh_match.address, 0, sizeof(struct in6_addr));
 285
 286                 if (!ospf6_route_find_nexthop(nh_list, &nh_match)) {
 287                         nh = ospf6_nexthop_create();
 288                         ospf6_nexthop_copy(nh, &nh_match);
 289                         listnode_add(nh_list, nh);
 290                 }
 291         }
 292 }
 293
 294 void ospf6_route_zebra_copy_nexthops(struct ospf6_route *route,
 295                                      struct zapi_nexthop nexthops[],
 296                                      int entries)
 297 {
 298         struct ospf6_nexthop *nh;
 299         struct listnode *node;
 300         char buf[64];
 301         int i;
 302
 303         if (route) {
 304                 i = 0;
 305                 for (ALL_LIST_ELEMENTS_RO(route->nh_list, node, nh)) {
 306                         if (IS_OSPF6_DEBUG_ZEBRA(SEND)) {
 307                                 const char *ifname;
 308                                 inet_ntop(AF_INET6, &nh->address, buf,
 309                                           sizeof(buf));
 310                                 ifname = ifindex2ifname(nh->ifindex,
 311                                                         VRF_DEFAULT);
 312                                 zlog_debug("  nexthop: %s%%%.*s(%d)", buf,
 313                                            IFNAMSIZ, ifname, nh->ifindex);
 314                         }
 315                         if (i >= entries)
 316                                 return;
 317
 318                         nexthops[i].vrf_id = VRF_DEFAULT;
 319                         nexthops[i].ifindex = nh->ifindex;
 320                         if (!IN6_IS_ADDR_UNSPECIFIED(&nh->address)) {
 321                                 nexthops[i].gate.ipv6 = nh->address;
 322                                 nexthops[i].type = NEXTHOP_TYPE_IPV6_IFINDEX;
 323                         } else
 324                                 nexthops[i].type = NEXTHOP_TYPE_IFINDEX;
 325                         i++;
 326                 }
 327         }
 328 }
 329
 330 int ospf6_route_get_first_nh_index(struct ospf6_route *route)
 331 {
 332         struct ospf6_nexthop *nh;
 333
 334         if (route) {
 335                 if ((nh = (struct ospf6_nexthop *)listhead(route->nh_list)))
 336                         return (nh->ifindex);
 337         }
 338
 339         return (-1);
 340 }
 341
 342 int ospf6_nexthop_cmp(struct ospf6_nexthop *a, struct ospf6_nexthop *b)
 343 {
 344         if (a->ifindex < b->ifindex)
 345                 return -1;
 346         else if (a->ifindex > b->ifindex)
 347                 return 1;
 348         else
 349                 return memcmp(&a->address, &b->address,
 350                               sizeof(struct in6_addr));
 351
 352         return 0;
 353 }
 354
 355 static int ospf6_path_cmp(struct ospf6_path *a, struct ospf6_path *b)
 356 {
 357         if (a->origin.adv_router < b->origin.adv_router)
 358                 return -1;
 359         else if (a->origin.adv_router > b->origin.adv_router)
 360                 return 1;
 361         else
 362                 return 0;
 363 }
 364
 365 void ospf6_path_free(struct ospf6_path *op)
 366 {
 367         if (op->nh_list)
 368                 list_delete_and_null(&op->nh_list);
 369         XFREE(MTYPE_OSPF6_PATH, op);
 370 }
 371
 372 struct ospf6_path *ospf6_path_dup(struct ospf6_path *path)
 373 {
 374         struct ospf6_path *new;
 375
 376         new = XCALLOC(MTYPE_OSPF6_PATH, sizeof(struct ospf6_path));
 377         memcpy(new, path, sizeof(struct ospf6_path));
 378         new->nh_list = list_new();
 379         new->nh_list->cmp = (int (*)(void *, void *))ospf6_nexthop_cmp;
 380         new->nh_list->del = (void (*)(void *))ospf6_nexthop_delete;
 381
 382         return new;
 383 }
 384
 385 void ospf6_copy_paths(struct list *dst, struct list *src)
 386 {
 387         struct ospf6_path *path_new, *path;
 388         struct listnode *node;
 389
 390         if (dst && src) {
 391                 for (ALL_LIST_ELEMENTS_RO(src, node, path)) {
 392                         path_new = ospf6_path_dup(path);
 393                         ospf6_copy_nexthops(path_new->nh_list, path->nh_list);
 394                         listnode_add_sort(dst, path_new);
 395                 }
 396         }
 397 }
 398
 399 struct ospf6_route *ospf6_route_create(void)
 400 {
 401         struct ospf6_route *route;
 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_and_null(&route->nh_list);
 417                 if (route->paths)
 418                         list_delete_and_null(&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         char buf[PREFIX2STR_BUFFER];
 554         unsigned int link_error = 0, num = 0;
 555
 556         r = ospf6_route_head(table);
 557         prev = NULL;
 558         while (r) {
 559                 if (r->prev != prev)
 560                         link_error++;
 561
 562                 next = ospf6_route_next(r);
 563
 564                 if (r->next != next)
 565                         link_error++;
 566
 567                 prev = r;
 568                 r = next;
 569         }
 570
 571         for (r = ospf6_route_head(table); r; r = ospf6_route_next(r))
 572                 num++;
 573
 574         if (link_error == 0 && num == table->count)
 575                 return;
 576
 577         zlog_err("PANIC !!");
 578         zlog_err("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                 prefix2str(&r->prefix, buf, sizeof(buf));
 583                 zlog_info("%p<-[%p]->%p : %s", r->prev, r, r->next, buf);
 584         }
 585         zlog_debug("DUMP END");
 586
 587         assert(link_error == 0 && num == table->count);
 588 }
 589 #define ospf6_route_table_assert(t) (route_table_assert (t))
 590 #else
 591 #define ospf6_route_table_assert(t) ((void) 0)
 592 #endif /*DEBUG*/
 593
 594 struct ospf6_route *ospf6_route_add(struct ospf6_route *route,
 595                                     struct ospf6_route_table *table)
 596 {
 597         struct route_node *node, *nextnode, *prevnode;
 598         struct ospf6_route *current = NULL;
 599         struct ospf6_route *prev = NULL, *old = NULL, *next = NULL;
 600         char buf[PREFIX2STR_BUFFER];
 601         struct timeval now;
 602
 603         assert(route->rnode == NULL);
 604         assert(route->lock == 0);
 605         assert(route->next == NULL);
 606         assert(route->prev == NULL);
 607
 608         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
 609                 ospf6_linkstate_prefix2str(&route->prefix, buf, sizeof(buf));
 610         else
 611                 prefix2str(&route->prefix, buf, sizeof(buf));
 612
 613         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 614                 zlog_debug("%s %p: route add %p: %s paths %u nh %u",
 615                            ospf6_route_table_name(table), (void *)table,
 616                            (void *)route, buf, listcount(route->paths),
 617                            listcount(route->nh_list));
 618         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 619                 zlog_debug("%s: route add: %s", ospf6_route_table_name(table),
 620                            buf);
 621
 622         monotime(&now);
 623
 624         node = route_node_get(table->table, &route->prefix);
 625         route->rnode = node;
 626
 627         /* find place to insert */
 628         for (current = node->info; current; current = current->next) {
 629                 if (!ospf6_route_is_same(current, route))
 630                         next = current;
 631                 else if (current->type != route->type)
 632                         prev = current;
 633                 else if (ospf6_route_is_same_origin(current, route))
 634                         old = current;
 635                 else if (ospf6_route_cmp(current, route) > 0)
 636                         next = current;
 637                 else
 638                         prev = current;
 639
 640                 if (old || next)
 641                         break;
 642         }
 643
 644         if (old) {
 645                 /* if route does not actually change, return unchanged */
 646                 if (ospf6_route_is_identical(old, route)) {
 647                         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 648                                 zlog_debug(
 649                                         "%s %p: route add %p: needless update of %p old cost %u",
 650                                         ospf6_route_table_name(table),
 651                                         (void *)table, (void *)route,
 652                                         (void *)old, old->path.cost);
 653                         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 654                                 zlog_debug("%s: route add: needless update",
 655                                            ospf6_route_table_name(table));
 656
 657                         ospf6_route_delete(route);
 658                         SET_FLAG(old->flag, OSPF6_ROUTE_ADD);
 659                         ospf6_route_table_assert(table);
 660
 661                         /* to free the lookup lock */
 662                         route_unlock_node(node);
 663                         return old;
 664                 }
 665
 666                 if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 667                         zlog_debug(
 668                                 "%s %p: route add %p cost %u paths %u nh %u: update of %p cost %u paths %u nh %u",
 669                                 ospf6_route_table_name(table), (void *)table,
 670                                 (void *)route, route->path.cost,
 671                                 listcount(route->paths),
 672                                 listcount(route->nh_list), (void *)old,
 673                                 old->path.cost, listcount(old->paths),
 674                                 listcount(old->nh_list));
 675                 else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 676                         zlog_debug("%s: route add: update",
 677                                    ospf6_route_table_name(table));
 678
 679                 /* replace old one if exists */
 680                 if (node->info == old) {
 681                         node->info = route;
 682                         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 683                 }
 684
 685                 if (old->prev)
 686                         old->prev->next = route;
 687                 route->prev = old->prev;
 688                 if (old->next)
 689                         old->next->prev = route;
 690                 route->next = old->next;
 691
 692                 route->installed = old->installed;
 693                 route->changed = now;
 694                 assert(route->table == NULL);
 695                 route->table = table;
 696
 697                 ospf6_route_unlock(old); /* will be deleted later */
 698                 ospf6_route_lock(route);
 699
 700                 SET_FLAG(route->flag, OSPF6_ROUTE_CHANGE);
 701                 ospf6_route_table_assert(table);
 702
 703                 if (table->hook_add)
 704                         (*table->hook_add)(route);
 705
 706                 return route;
 707         }
 708
 709         /* insert if previous or next node found */
 710         if (prev || next) {
 711                 if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 712                         zlog_debug(
 713                                 "%s %p: route add %p cost %u: another path: prev %p, next %p node ref %u",
 714                                 ospf6_route_table_name(table), (void *)table,
 715                                 (void *)route, route->path.cost, (void *)prev,
 716                                 (void *)next, node->lock);
 717                 else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 718                         zlog_debug("%s: route add cost %u: another path found",
 719                                    ospf6_route_table_name(table),
 720                                    route->path.cost);
 721
 722                 if (prev == NULL)
 723                         prev = next->prev;
 724                 if (next == NULL)
 725                         next = prev->next;
 726
 727                 if (prev)
 728                         prev->next = route;
 729                 route->prev = prev;
 730                 if (next)
 731                         next->prev = route;
 732                 route->next = next;
 733
 734                 if (node->info == next) {
 735                         assert(next->rnode == node);
 736                         node->info = route;
 737                         UNSET_FLAG(next->flag, OSPF6_ROUTE_BEST);
 738                         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 739                         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 740                                 zlog_info(
 741                                         "%s %p: route add %p cost %u: replacing previous best: %p cost %u",
 742                                         ospf6_route_table_name(table),
 743                                         (void *)table, (void *)route,
 744                                         route->path.cost,
 745                                         (void *)next, next->path.cost);
 746                 }
 747
 748                 route->installed = now;
 749                 route->changed = now;
 750                 assert(route->table == NULL);
 751                 route->table = table;
 752
 753                 ospf6_route_lock(route);
 754                 table->count++;
 755                 ospf6_route_table_assert(table);
 756
 757                 SET_FLAG(route->flag, OSPF6_ROUTE_ADD);
 758                 if (table->hook_add)
 759                         (*table->hook_add)(route);
 760
 761                 return route;
 762         }
 763
 764         /* Else, this is the brand new route regarding to the prefix */
 765         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 766                 zlog_debug("%s %p: route add %p %s cost %u: brand new route",
 767                            ospf6_route_table_name(table), (void *)table,
 768                            (void *)route, buf, route->path.cost);
 769         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 770                 zlog_debug("%s: route add: brand new route",
 771                            ospf6_route_table_name(table));
 772
 773         assert(node->info == NULL);
 774         node->info = route;
 775         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 776         ospf6_route_lock(route);
 777         route->installed = now;
 778         route->changed = now;
 779         assert(route->table == NULL);
 780         route->table = table;
 781
 782         /* lookup real existing next route */
 783         nextnode = node;
 784         route_lock_node(nextnode);
 785         do {
 786                 nextnode = route_next(nextnode);
 787         } while (nextnode && nextnode->info == NULL);
 788
 789         /* set next link */
 790         if (nextnode == NULL)
 791                 route->next = NULL;
 792         else {
 793                 route_unlock_node(nextnode);
 794
 795                 next = nextnode->info;
 796                 route->next = next;
 797                 next->prev = route;
 798         }
 799
 800         /* lookup real existing prev route */
 801         prevnode = node;
 802         route_lock_node(prevnode);
 803         do {
 804                 prevnode = route_prev(prevnode);
 805         } while (prevnode && prevnode->info == NULL);
 806
 807         /* set prev link */
 808         if (prevnode == NULL)
 809                 route->prev = NULL;
 810         else {
 811                 route_unlock_node(prevnode);
 812
 813                 prev = prevnode->info;
 814                 while (prev->next && ospf6_route_is_same(prev, prev->next))
 815                         prev = prev->next;
 816                 route->prev = prev;
 817                 prev->next = route;
 818         }
 819
 820         table->count++;
 821         ospf6_route_table_assert(table);
 822
 823         SET_FLAG(route->flag, OSPF6_ROUTE_ADD);
 824         if (table->hook_add)
 825                 (*table->hook_add)(route);
 826
 827         return route;
 828 }
 829
 830 void ospf6_route_remove(struct ospf6_route *route,
 831                         struct ospf6_route_table *table)
 832 {
 833         struct route_node *node;
 834         struct ospf6_route *current;
 835         char buf[PREFIX2STR_BUFFER];
 836
 837         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
 838                 ospf6_linkstate_prefix2str(&route->prefix, buf, sizeof(buf));
 839         else
 840                 prefix2str(&route->prefix, buf, sizeof(buf));
 841
 842         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 843                 zlog_debug("%s %p: route remove %p: %s cost %u refcount %u",
 844                            ospf6_route_table_name(table), (void *)table,
 845                            (void *)route, buf, route->path.cost, route->lock);
 846         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 847                 zlog_debug("%s: route remove: %s",
 848                            ospf6_route_table_name(table), buf);
 849
 850         node = route_node_lookup(table->table, &route->prefix);
 851         assert(node);
 852
 853         /* find the route to remove, making sure that the route pointer
 854            is from the route table. */
 855         current = node->info;
 856         while (current && current != route)
 857                 current = current->next;
 858
 859         assert(current == route);
 860
 861         /* adjust doubly linked list */
 862         if (route->prev)
 863                 route->prev->next = route->next;
 864         if (route->next)
 865                 route->next->prev = route->prev;
 866
 867         if (node->info == route) {
 868                 if (route->next && route->next->rnode == node) {
 869                         node->info = route->next;
 870                         SET_FLAG(route->next->flag, OSPF6_ROUTE_BEST);
 871                 } else {
 872                         node->info = NULL;
 873                         route->rnode = NULL;
 874                         route_unlock_node(node); /* to free the original lock */
 875                 }
 876         }
 877
 878         route_unlock_node(node); /* to free the lookup lock */
 879         table->count--;
 880         ospf6_route_table_assert(table);
 881
 882         SET_FLAG(route->flag, OSPF6_ROUTE_WAS_REMOVED);
 883
 884         /* Note hook_remove may call ospf6_route_remove */
 885         if (table->hook_remove)
 886                 (*table->hook_remove)(route);
 887
 888         ospf6_route_unlock(route);
 889 }
 890
 891 struct ospf6_route *ospf6_route_head(struct ospf6_route_table *table)
 892 {
 893         struct route_node *node;
 894         struct ospf6_route *route;
 895
 896         node = route_top(table->table);
 897         if (node == NULL)
 898                 return NULL;
 899
 900         /* skip to the real existing entry */
 901         while (node && node->info == NULL)
 902                 node = route_next(node);
 903         if (node == NULL)
 904                 return NULL;
 905
 906         route_unlock_node(node);
 907         assert(node->info);
 908
 909         route = (struct ospf6_route *)node->info;
 910         assert(route->prev == NULL);
 911         assert(route->table == table);
 912         ospf6_route_lock(route);
 913
 914         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 915                 zlog_info("%s %p: route head: %p<-[%p]->%p",
 916                           ospf6_route_table_name(table), (void *)table,
 917                           (void *)route->prev, (void *)route,
 918                           (void *)route->next);
 919
 920         return route;
 921 }
 922
 923 struct ospf6_route *ospf6_route_next(struct ospf6_route *route)
 924 {
 925         struct ospf6_route *next = route->next;
 926
 927         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 928                 zlog_info("%s %p: route next: %p<-[%p]->%p",
 929                           ospf6_route_table_name(route->table),
 930                           (void *)route->table, (void *)route->prev,
 931                           (void *)route, (void *)route->next);
 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         const char *ifname;
1039         struct timeval now, res;
1040         struct listnode *node;
1041         struct ospf6_nexthop *nh;
1042
1043         monotime(&now);
1044         timersub(&now, &route->changed, &res);
1045         timerstring(&res, duration, sizeof(duration));
1046
1047         /* destination */
1048         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
1049                 ospf6_linkstate_prefix2str(&route->prefix, destination,
1050                                            sizeof(destination));
1051         else if (route->type == OSPF6_DEST_TYPE_ROUTER)
1052                 inet_ntop(route->prefix.family, &route->prefix.u.prefix,
1053                           destination, sizeof(destination));
1054         else
1055                 prefix2str(&route->prefix, destination, sizeof(destination));
1056
1057         i = 0;
1058         for (ALL_LIST_ELEMENTS_RO(route->nh_list, node, nh)) {
1059                 /* nexthop */
1060                 inet_ntop(AF_INET6, &nh->address, nexthop, sizeof(nexthop));
1061                 ifname = ifindex2ifname(nh->ifindex, VRF_DEFAULT);
1062
1063                 if (!i) {
1064                         vty_out(vty, "%c%1s %2s %-30s %-25s %6.*s %s\n",
1065                                 (ospf6_route_is_best(route) ? '*' : ' '),
1066                                 OSPF6_DEST_TYPE_SUBSTR(route->type),
1067                                 OSPF6_PATH_TYPE_SUBSTR(route->path.type),
1068                                 destination, nexthop, IFNAMSIZ, ifname,
1069                                 duration);
1070                         i++;
1071                 } else
1072                         vty_out(vty, "%c%1s %2s %-30s %-25s %6.*s %s\n", ' ',
1073                                 "", "", "", nexthop, IFNAMSIZ, ifname, "");
1074         }
1075 }
1076
1077 void ospf6_route_show_detail(struct vty *vty, struct ospf6_route *route)
1078 {
1079         const char *ifname;
1080         char destination[PREFIX2STR_BUFFER], nexthop[64];
1081         char area_id[16], id[16], adv_router[16], capa[16], options[16];
1082         struct timeval now, res;
1083         char duration[64];
1084         struct listnode *node;
1085         struct ospf6_nexthop *nh;
1086
1087         monotime(&now);
1088
1089         /* destination */
1090         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
1091                 ospf6_linkstate_prefix2str(&route->prefix, destination,
1092                                            sizeof(destination));
1093         else if (route->type == OSPF6_DEST_TYPE_ROUTER)
1094                 inet_ntop(route->prefix.family, &route->prefix.u.prefix,
1095                           destination, sizeof(destination));
1096         else
1097                 prefix2str(&route->prefix, destination, sizeof(destination));
1098         vty_out(vty, "Destination: %s\n", destination);
1099
1100         /* destination type */
1101         vty_out(vty, "Destination type: %s\n",
1102                 OSPF6_DEST_TYPE_NAME(route->type));
1103
1104         /* Time */
1105         timersub(&now, &route->installed, &res);
1106         timerstring(&res, duration, sizeof(duration));
1107         vty_out(vty, "Installed Time: %s ago\n", duration);
1108
1109         timersub(&now, &route->changed, &res);
1110         timerstring(&res, duration, sizeof(duration));
1111         vty_out(vty, "  Changed Time: %s ago\n", duration);
1112
1113         /* Debugging info */
1114         vty_out(vty, "Lock: %d Flags: %s%s%s%s\n", route->lock,
1115                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST) ? "B" : "-"),
1116                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_ADD) ? "A" : "-"),
1117                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_REMOVE) ? "R" : "-"),
1118                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_CHANGE) ? "C" : "-"));
1119         vty_out(vty, "Memory: prev: %p this: %p next: %p\n",
1120                 (void *)route->prev, (void *)route, (void *)route->next);
1121
1122         /* Path section */
1123
1124         /* Area-ID */
1125         inet_ntop(AF_INET, &route->path.area_id, area_id, sizeof(area_id));
1126         vty_out(vty, "Associated Area: %s\n", area_id);
1127
1128         /* Path type */
1129         vty_out(vty, "Path Type: %s\n", OSPF6_PATH_TYPE_NAME(route->path.type));
1130
1131         /* LS Origin */
1132         inet_ntop(AF_INET, &route->path.origin.id, id, sizeof(id));
1133         inet_ntop(AF_INET, &route->path.origin.adv_router, adv_router,
1134                   sizeof(adv_router));
1135         vty_out(vty, "LS Origin: %s Id: %s Adv: %s\n",
1136                 ospf6_lstype_name(route->path.origin.type), id, adv_router);
1137
1138         /* Options */
1139         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1140         vty_out(vty, "Options: %s\n", options);
1141
1142         /* Router Bits */
1143         ospf6_capability_printbuf(route->path.router_bits, capa, sizeof(capa));
1144         vty_out(vty, "Router Bits: %s\n", capa);
1145
1146         /* Prefix Options */
1147         vty_out(vty, "Prefix Options: xxx\n");
1148
1149         /* Metrics */
1150         vty_out(vty, "Metric Type: %d\n", route->path.metric_type);
1151         vty_out(vty, "Metric: %d (%d)\n", route->path.cost,
1152                 route->path.u.cost_e2);
1153
1154         vty_out(vty, "Paths count: %u\n", route->paths->count);
1155         vty_out(vty, "Nexthop count: %u\n", route->nh_list->count);
1156         /* Nexthops */
1157         vty_out(vty, "Nexthop:\n");
1158         for (ALL_LIST_ELEMENTS_RO(route->nh_list, node, nh)) {
1159                 /* nexthop */
1160                 inet_ntop(AF_INET6, &nh->address, nexthop, sizeof(nexthop));
1161                 ifname = ifindex2ifname(nh->ifindex, VRF_DEFAULT);
1162                 vty_out(vty, "  %s %.*s\n", nexthop, IFNAMSIZ, ifname);
1163         }
1164         vty_out(vty, "\n");
1165 }
1166
1167 static void ospf6_route_show_table_summary(struct vty *vty,
1168                                            struct ospf6_route_table *table)
1169 {
1170         struct ospf6_route *route, *prev = NULL;
1171         int i, pathtype[OSPF6_PATH_TYPE_MAX];
1172         unsigned int number = 0;
1173         int nh_count = 0, nhinval = 0, ecmp = 0;
1174         int alternative = 0, destination = 0;
1175
1176         for (i = 0; i < OSPF6_PATH_TYPE_MAX; i++)
1177                 pathtype[i] = 0;
1178
1179         for (route = ospf6_route_head(table); route;
1180              route = ospf6_route_next(route)) {
1181                 if (prev == NULL || !ospf6_route_is_same(prev, route))
1182                         destination++;
1183                 else
1184                         alternative++;
1185                 nh_count = ospf6_num_nexthops(route->nh_list);
1186                 if (!nh_count)
1187                         nhinval++;
1188                 else if (nh_count > 1)
1189                         ecmp++;
1190                 pathtype[route->path.type]++;
1191                 number++;
1192
1193                 prev = route;
1194         }
1195
1196         assert(number == table->count);
1197
1198         vty_out(vty, "Number of OSPFv3 routes: %d\n", number);
1199         vty_out(vty, "Number of Destination: %d\n", destination);
1200         vty_out(vty, "Number of Alternative routes: %d\n", alternative);
1201         vty_out(vty, "Number of Equal Cost Multi Path: %d\n", ecmp);
1202         for (i = OSPF6_PATH_TYPE_INTRA; i <= OSPF6_PATH_TYPE_EXTERNAL2; i++) {
1203                 vty_out(vty, "Number of %s routes: %d\n",
1204                         OSPF6_PATH_TYPE_NAME(i), pathtype[i]);
1205         }
1206 }
1207
1208 static void ospf6_route_show_table_prefix(struct vty *vty,
1209                                           struct prefix *prefix,
1210                                           struct ospf6_route_table *table)
1211 {
1212         struct ospf6_route *route;
1213
1214         route = ospf6_route_lookup(prefix, table);
1215         if (route == NULL)
1216                 return;
1217
1218         ospf6_route_lock(route);
1219         while (route && ospf6_route_is_prefix(prefix, route)) {
1220                 /* Specifying a prefix will always display details */
1221                 ospf6_route_show_detail(vty, route);
1222                 route = ospf6_route_next(route);
1223         }
1224         if (route)
1225                 ospf6_route_unlock(route);
1226 }
1227
1228 static void ospf6_route_show_table_address(struct vty *vty,
1229                                            struct prefix *prefix,
1230                                            struct ospf6_route_table *table)
1231 {
1232         struct ospf6_route *route;
1233
1234         route = ospf6_route_lookup_bestmatch(prefix, table);
1235         if (route == NULL)
1236                 return;
1237
1238         prefix = &route->prefix;
1239         ospf6_route_lock(route);
1240         while (route && ospf6_route_is_prefix(prefix, route)) {
1241                 /* Specifying a prefix will always display details */
1242                 ospf6_route_show_detail(vty, route);
1243                 route = ospf6_route_next(route);
1244         }
1245         if (route)
1246                 ospf6_route_unlock(route);
1247 }
1248
1249 static void ospf6_route_show_table_match(struct vty *vty, int detail,
1250                                          struct prefix *prefix,
1251                                          struct ospf6_route_table *table)
1252 {
1253         struct ospf6_route *route;
1254         assert(prefix->family);
1255
1256         route = ospf6_route_match_head(prefix, table);
1257         while (route) {
1258                 if (detail)
1259                         ospf6_route_show_detail(vty, route);
1260                 else
1261                         ospf6_route_show(vty, route);
1262                 route = ospf6_route_match_next(prefix, route);
1263         }
1264 }
1265
1266 static void ospf6_route_show_table_type(struct vty *vty, int detail,
1267                                         uint8_t type,
1268                                         struct ospf6_route_table *table)
1269 {
1270         struct ospf6_route *route;
1271
1272         route = ospf6_route_head(table);
1273         while (route) {
1274                 if (route->path.type == type) {
1275                         if (detail)
1276                                 ospf6_route_show_detail(vty, route);
1277                         else
1278                                 ospf6_route_show(vty, route);
1279                 }
1280                 route = ospf6_route_next(route);
1281         }
1282 }
1283
1284 static void ospf6_route_show_table(struct vty *vty, int detail,
1285                                    struct ospf6_route_table *table)
1286 {
1287         struct ospf6_route *route;
1288
1289         route = ospf6_route_head(table);
1290         while (route) {
1291                 if (detail)
1292                         ospf6_route_show_detail(vty, route);
1293                 else
1294                         ospf6_route_show(vty, route);
1295                 route = ospf6_route_next(route);
1296         }
1297 }
1298
1299 int ospf6_route_table_show(struct vty *vty, int argc_start, int argc,
1300                            struct cmd_token **argv,
1301                            struct ospf6_route_table *table)
1302 {
1303         int summary = 0;
1304         int match = 0;
1305         int detail = 0;
1306         int slash = 0;
1307         int isprefix = 0;
1308         int i, ret;
1309         struct prefix prefix;
1310         uint8_t type = 0;
1311
1312         memset(&prefix, 0, sizeof(struct prefix));
1313
1314         for (i = argc_start; i < argc; i++) {
1315                 if (strmatch(argv[i]->text, "summary")) {
1316                         summary++;
1317                         continue;
1318                 }
1319
1320                 if (strmatch(argv[i]->text, "intra-area")) {
1321                         type = OSPF6_PATH_TYPE_INTRA;
1322                         continue;
1323                 }
1324
1325                 if (strmatch(argv[i]->text, "inter-area")) {
1326                         type = OSPF6_PATH_TYPE_INTER;
1327                         continue;
1328                 }
1329
1330                 if (strmatch(argv[i]->text, "external-1")) {
1331                         type = OSPF6_PATH_TYPE_EXTERNAL1;
1332                         continue;
1333                 }
1334
1335                 if (strmatch(argv[i]->text, "external-2")) {
1336                         type = OSPF6_PATH_TYPE_EXTERNAL2;
1337                         continue;
1338                 }
1339
1340                 if (strmatch(argv[i]->text, "detail")) {
1341                         detail++;
1342                         continue;
1343                 }
1344
1345                 if (strmatch(argv[i]->text, "match")) {
1346                         match++;
1347                         continue;
1348                 }
1349
1350                 ret = str2prefix(argv[i]->arg, &prefix);
1351                 if (ret == 1 && prefix.family == AF_INET6) {
1352                         isprefix++;
1353                         if (strchr(argv[i]->arg, '/'))
1354                                 slash++;
1355                         continue;
1356                 }
1357
1358                 vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1359                 return CMD_SUCCESS;
1360         }
1361
1362         /* Give summary of this route table */
1363         if (summary) {
1364                 ospf6_route_show_table_summary(vty, table);
1365                 return CMD_SUCCESS;
1366         }
1367
1368         /* Give exact prefix-match route */
1369         if (isprefix && !match) {
1370                 /* If exact address, give best matching route */
1371                 if (!slash)
1372                         ospf6_route_show_table_address(vty, &prefix, table);
1373                 else
1374                         ospf6_route_show_table_prefix(vty, &prefix, table);
1375
1376                 return CMD_SUCCESS;
1377         }
1378
1379         if (match)
1380                 ospf6_route_show_table_match(vty, detail, &prefix, table);
1381         else if (type)
1382                 ospf6_route_show_table_type(vty, detail, type, table);
1383         else
1384                 ospf6_route_show_table(vty, detail, table);
1385
1386         return CMD_SUCCESS;
1387 }
1388
1389 static void ospf6_linkstate_show_header(struct vty *vty)
1390 {
1391         vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %s\n", "Type", "Router-ID",
1392                 "Net-ID", "Rtr-Bits", "Options", "Cost");
1393 }
1394
1395 static void ospf6_linkstate_show(struct vty *vty, struct ospf6_route *route)
1396 {
1397         uint32_t router, id;
1398         char routername[16], idname[16], rbits[16], options[16];
1399
1400         router = ospf6_linkstate_prefix_adv_router(&route->prefix);
1401         inet_ntop(AF_INET, &router, routername, sizeof(routername));
1402         id = ospf6_linkstate_prefix_id(&route->prefix);
1403         inet_ntop(AF_INET, &id, idname, sizeof(idname));
1404
1405         ospf6_capability_printbuf(route->path.router_bits, rbits,
1406                                   sizeof(rbits));
1407         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1408
1409         if (ntohl(id))
1410                 vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %lu\n", "Network",
1411                         routername, idname, rbits, options,
1412                         (unsigned long)route->path.cost);
1413         else
1414                 vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %lu\n", "Router",
1415                         routername, idname, rbits, options,
1416                         (unsigned long)route->path.cost);
1417 }
1418
1419
1420 static void ospf6_linkstate_show_table_exact(struct vty *vty,
1421                                              struct prefix *prefix,
1422                                              struct ospf6_route_table *table)
1423 {
1424         struct ospf6_route *route;
1425
1426         route = ospf6_route_lookup(prefix, table);
1427         if (route == NULL)
1428                 return;
1429
1430         ospf6_route_lock(route);
1431         while (route && ospf6_route_is_prefix(prefix, route)) {
1432                 /* Specifying a prefix will always display details */
1433                 ospf6_route_show_detail(vty, route);
1434                 route = ospf6_route_next(route);
1435         }
1436         if (route)
1437                 ospf6_route_unlock(route);
1438 }
1439
1440 static void ospf6_linkstate_show_table(struct vty *vty, int detail,
1441                                        struct ospf6_route_table *table)
1442 {
1443         struct ospf6_route *route;
1444
1445         if (!detail)
1446                 ospf6_linkstate_show_header(vty);
1447
1448         route = ospf6_route_head(table);
1449         while (route) {
1450                 if (detail)
1451                         ospf6_route_show_detail(vty, route);
1452                 else
1453                         ospf6_linkstate_show(vty, route);
1454                 route = ospf6_route_next(route);
1455         }
1456 }
1457
1458 int ospf6_linkstate_table_show(struct vty *vty, int idx_ipv4, int argc,
1459                                struct cmd_token **argv,
1460                                struct ospf6_route_table *table)
1461 {
1462         int detail = 0;
1463         int is_id = 0;
1464         int is_router = 0;
1465         int i, ret;
1466         struct prefix router, id, prefix;
1467
1468         memset(&router, 0, sizeof(struct prefix));
1469         memset(&id, 0, sizeof(struct prefix));
1470         memset(&prefix, 0, sizeof(struct prefix));
1471
1472         for (i = idx_ipv4; i < argc; i++) {
1473                 if (strmatch(argv[i]->text, "detail")) {
1474                         detail++;
1475                         continue;
1476                 }
1477
1478                 if (!is_router) {
1479                         ret = str2prefix(argv[i]->arg, &router);
1480                         if (ret == 1 && router.family == AF_INET) {
1481                                 is_router++;
1482                                 continue;
1483                         }
1484                         vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1485                         return CMD_SUCCESS;
1486                 }
1487
1488                 if (!is_id) {
1489                         ret = str2prefix(argv[i]->arg, &id);
1490                         if (ret == 1 && id.family == AF_INET) {
1491                                 is_id++;
1492                                 continue;
1493                         }
1494                         vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1495                         return CMD_SUCCESS;
1496                 }
1497
1498                 vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1499                 return CMD_SUCCESS;
1500         }
1501
1502         if (is_router)
1503                 ospf6_linkstate_prefix(router.u.prefix4.s_addr,
1504                                        id.u.prefix4.s_addr, &prefix);
1505
1506         if (prefix.family)
1507                 ospf6_linkstate_show_table_exact(vty, &prefix, table);
1508         else
1509                 ospf6_linkstate_show_table(vty, detail, table);
1510
1511         return CMD_SUCCESS;
1512 }
1513
1514
1515 void ospf6_brouter_show_header(struct vty *vty)
1516 {
1517         vty_out(vty, "%-15s %-8s %-14s %-10s %-15s\n", "Router-ID", "Rtr-Bits",
1518                 "Options", "Path-Type", "Area");
1519 }
1520
1521 void ospf6_brouter_show(struct vty *vty, struct ospf6_route *route)
1522 {
1523         uint32_t adv_router;
1524         char adv[16], rbits[16], options[16], area[16];
1525
1526         adv_router = ospf6_linkstate_prefix_adv_router(&route->prefix);
1527         inet_ntop(AF_INET, &adv_router, adv, sizeof(adv));
1528         ospf6_capability_printbuf(route->path.router_bits, rbits,
1529                                   sizeof(rbits));
1530         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1531         inet_ntop(AF_INET, &route->path.area_id, area, sizeof(area));
1532
1533         /* vty_out (vty, "%-15s %-8s %-14s %-10s %-15s\n",
1534                  "Router-ID", "Rtr-Bits", "Options", "Path-Type", "Area"); */
1535         vty_out(vty, "%-15s %-8s %-14s %-10s %-15s\n", adv, rbits, options,
1536                 OSPF6_PATH_TYPE_NAME(route->path.type), area);
1537 }
1538
1539 DEFUN (debug_ospf6_route,
1540        debug_ospf6_route_cmd,
1541        "debug ospf6 route <table|intra-area|inter-area|memory>",
1542        DEBUG_STR
1543        OSPF6_STR
1544        "Debug routes\n"
1545        "Debug route table calculation\n"
1546        "Debug intra-area route calculation\n"
1547        "Debug inter-area route calculation\n"
1548        "Debug route memory use\n"
1549        )
1550 {
1551         int idx_type = 3;
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_ON(level);
1563         return CMD_SUCCESS;
1564 }
1565
1566 DEFUN (no_debug_ospf6_route,
1567        no_debug_ospf6_route_cmd,
1568        "no debug ospf6 route <table|intra-area|inter-area|memory>",
1569        NO_STR
1570        DEBUG_STR
1571        OSPF6_STR
1572        "Debug routes\n"
1573        "Debug route table calculation\n"
1574        "Debug intra-area route calculation\n"
1575        "Debug inter-area route calculation\n"
1576        "Debug route memory use\n")
1577 {
1578         int idx_type = 4;
1579         unsigned char level = 0;
1580
1581         if (!strcmp(argv[idx_type]->text, "table"))
1582                 level = OSPF6_DEBUG_ROUTE_TABLE;
1583         else if (!strcmp(argv[idx_type]->text, "intra-area"))
1584                 level = OSPF6_DEBUG_ROUTE_INTRA;
1585         else if (!strcmp(argv[idx_type]->text, "inter-area"))
1586                 level = OSPF6_DEBUG_ROUTE_INTER;
1587         else if (!strcmp(argv[idx_type]->text, "memory"))
1588                 level = OSPF6_DEBUG_ROUTE_MEMORY;
1589         OSPF6_DEBUG_ROUTE_OFF(level);
1590         return CMD_SUCCESS;
1591 }
1592
1593 int config_write_ospf6_debug_route(struct vty *vty)
1594 {
1595         if (IS_OSPF6_DEBUG_ROUTE(TABLE))
1596                 vty_out(vty, "debug ospf6 route table\n");
1597         if (IS_OSPF6_DEBUG_ROUTE(INTRA))
1598                 vty_out(vty, "debug ospf6 route intra-area\n");
1599         if (IS_OSPF6_DEBUG_ROUTE(INTER))
1600                 vty_out(vty, "debug ospf6 route inter-area\n");
1601         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
1602                 vty_out(vty, "debug ospf6 route memory\n");
1603
1604         return 0;
1605 }
1606
1607 void install_element_ospf6_debug_route(void)
1608 {
1609         install_element(ENABLE_NODE, &debug_ospf6_route_cmd);
1610         install_element(ENABLE_NODE, &no_debug_ospf6_route_cmd);
1611         install_element(CONFIG_NODE, &debug_ospf6_route_cmd);
1612         install_element(CONFIG_NODE, &no_debug_ospf6_route_cmd);
1613 }