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",
 615                            ospf6_route_table_name(table), (void *)table,
 616                            (void *)route, buf);
 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 nh %u: update of %p old cost %u nh %u",
 668                                 ospf6_route_table_name(table), (void *)table,
 669                                 (void *)route, route->path.cost,
 670                                 listcount(route->nh_list), (void *)old,
 671                                 old->path.cost, listcount(old->nh_list));
 672                 else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 673                         zlog_debug("%s: route add: update",
 674                                    ospf6_route_table_name(table));
 675
 676                 /* replace old one if exists */
 677                 if (node->info == old) {
 678                         node->info = route;
 679                         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 680                 }
 681
 682                 if (old->prev)
 683                         old->prev->next = route;
 684                 route->prev = old->prev;
 685                 if (old->next)
 686                         old->next->prev = route;
 687                 route->next = old->next;
 688
 689                 route->installed = old->installed;
 690                 route->changed = now;
 691                 assert(route->table == NULL);
 692                 route->table = table;
 693
 694                 ospf6_route_unlock(old); /* will be deleted later */
 695                 ospf6_route_lock(route);
 696
 697                 SET_FLAG(route->flag, OSPF6_ROUTE_CHANGE);
 698                 ospf6_route_table_assert(table);
 699
 700                 if (table->hook_add)
 701                         (*table->hook_add)(route);
 702
 703                 return route;
 704         }
 705
 706         /* insert if previous or next node found */
 707         if (prev || next) {
 708                 if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 709                         zlog_debug(
 710                                 "%s %p: route add %p cost %u: another path: prev %p, next %p node ref %u",
 711                                 ospf6_route_table_name(table), (void *)table,
 712                                 (void *)route, route->path.cost, (void *)prev,
 713                                 (void *)next, node->lock);
 714                 else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 715                         zlog_debug("%s: route add cost %u: another path found",
 716                                    ospf6_route_table_name(table),
 717                                    route->path.cost);
 718
 719                 if (prev == NULL)
 720                         prev = next->prev;
 721                 if (next == NULL)
 722                         next = prev->next;
 723
 724                 if (prev)
 725                         prev->next = route;
 726                 route->prev = prev;
 727                 if (next)
 728                         next->prev = route;
 729                 route->next = next;
 730
 731                 if (node->info == next) {
 732                         assert(next->rnode == node);
 733                         node->info = route;
 734                         UNSET_FLAG(next->flag, OSPF6_ROUTE_BEST);
 735                         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 736                         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 737                                 zlog_info(
 738                                         "%s %p: route add %p cost %u: replacing previous best: %p cost %u",
 739                                         ospf6_route_table_name(table),
 740                                         (void *)table, (void *)route,
 741                                         route->path.cost,
 742                                         (void *)next, next->path.cost);
 743                 }
 744
 745                 route->installed = now;
 746                 route->changed = now;
 747                 assert(route->table == NULL);
 748                 route->table = table;
 749
 750                 ospf6_route_lock(route);
 751                 table->count++;
 752                 ospf6_route_table_assert(table);
 753
 754                 SET_FLAG(route->flag, OSPF6_ROUTE_ADD);
 755                 if (table->hook_add)
 756                         (*table->hook_add)(route);
 757
 758                 return route;
 759         }
 760
 761         /* Else, this is the brand new route regarding to the prefix */
 762         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 763                 zlog_debug("%s %p: route add %p %s cost %u: brand new route",
 764                            ospf6_route_table_name(table), (void *)table,
 765                            (void *)route, buf, route->path.cost);
 766         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 767                 zlog_debug("%s: route add: brand new route",
 768                            ospf6_route_table_name(table));
 769
 770         assert(node->info == NULL);
 771         node->info = route;
 772         SET_FLAG(route->flag, OSPF6_ROUTE_BEST);
 773         ospf6_route_lock(route);
 774         route->installed = now;
 775         route->changed = now;
 776         assert(route->table == NULL);
 777         route->table = table;
 778
 779         /* lookup real existing next route */
 780         nextnode = node;
 781         route_lock_node(nextnode);
 782         do {
 783                 nextnode = route_next(nextnode);
 784         } while (nextnode && nextnode->info == NULL);
 785
 786         /* set next link */
 787         if (nextnode == NULL)
 788                 route->next = NULL;
 789         else {
 790                 route_unlock_node(nextnode);
 791
 792                 next = nextnode->info;
 793                 route->next = next;
 794                 next->prev = route;
 795         }
 796
 797         /* lookup real existing prev route */
 798         prevnode = node;
 799         route_lock_node(prevnode);
 800         do {
 801                 prevnode = route_prev(prevnode);
 802         } while (prevnode && prevnode->info == NULL);
 803
 804         /* set prev link */
 805         if (prevnode == NULL)
 806                 route->prev = NULL;
 807         else {
 808                 route_unlock_node(prevnode);
 809
 810                 prev = prevnode->info;
 811                 while (prev->next && ospf6_route_is_same(prev, prev->next))
 812                         prev = prev->next;
 813                 route->prev = prev;
 814                 prev->next = route;
 815         }
 816
 817         table->count++;
 818         ospf6_route_table_assert(table);
 819
 820         SET_FLAG(route->flag, OSPF6_ROUTE_ADD);
 821         if (table->hook_add)
 822                 (*table->hook_add)(route);
 823
 824         return route;
 825 }
 826
 827 void ospf6_route_remove(struct ospf6_route *route,
 828                         struct ospf6_route_table *table)
 829 {
 830         struct route_node *node;
 831         struct ospf6_route *current;
 832         char buf[PREFIX2STR_BUFFER];
 833
 834         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
 835                 ospf6_linkstate_prefix2str(&route->prefix, buf, sizeof(buf));
 836         else
 837                 prefix2str(&route->prefix, buf, sizeof(buf));
 838
 839         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 840                 zlog_debug("%s %p: route remove %p: %s cost %u refcount %u",
 841                            ospf6_route_table_name(table), (void *)table,
 842                            (void *)route, buf, route->path.cost, route->lock);
 843         else if (IS_OSPF6_DEBUG_ROUTE(TABLE))
 844                 zlog_debug("%s: route remove: %s",
 845                            ospf6_route_table_name(table), buf);
 846
 847         node = route_node_lookup(table->table, &route->prefix);
 848         assert(node);
 849
 850         /* find the route to remove, making sure that the route pointer
 851            is from the route table. */
 852         current = node->info;
 853         while (current && current != route)
 854                 current = current->next;
 855
 856         assert(current == route);
 857
 858         /* adjust doubly linked list */
 859         if (route->prev)
 860                 route->prev->next = route->next;
 861         if (route->next)
 862                 route->next->prev = route->prev;
 863
 864         if (node->info == route) {
 865                 if (route->next && route->next->rnode == node) {
 866                         node->info = route->next;
 867                         SET_FLAG(route->next->flag, OSPF6_ROUTE_BEST);
 868                 } else {
 869                         node->info = NULL;
 870                         route->rnode = NULL;
 871                         route_unlock_node(node); /* to free the original lock */
 872                 }
 873         }
 874
 875         route_unlock_node(node); /* to free the lookup lock */
 876         table->count--;
 877         ospf6_route_table_assert(table);
 878
 879         SET_FLAG(route->flag, OSPF6_ROUTE_WAS_REMOVED);
 880
 881         /* Note hook_remove may call ospf6_route_remove */
 882         if (table->hook_remove)
 883                 (*table->hook_remove)(route);
 884
 885         ospf6_route_unlock(route);
 886 }
 887
 888 struct ospf6_route *ospf6_route_head(struct ospf6_route_table *table)
 889 {
 890         struct route_node *node;
 891         struct ospf6_route *route;
 892
 893         node = route_top(table->table);
 894         if (node == NULL)
 895                 return NULL;
 896
 897         /* skip to the real existing entry */
 898         while (node && node->info == NULL)
 899                 node = route_next(node);
 900         if (node == NULL)
 901                 return NULL;
 902
 903         route_unlock_node(node);
 904         assert(node->info);
 905
 906         route = (struct ospf6_route *)node->info;
 907         assert(route->prev == NULL);
 908         assert(route->table == table);
 909         ospf6_route_lock(route);
 910
 911         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 912                 zlog_info("%s %p: route head: %p<-[%p]->%p",
 913                           ospf6_route_table_name(table), (void *)table,
 914                           (void *)route->prev, (void *)route,
 915                           (void *)route->next);
 916
 917         return route;
 918 }
 919
 920 struct ospf6_route *ospf6_route_next(struct ospf6_route *route)
 921 {
 922         struct ospf6_route *next = route->next;
 923
 924         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
 925                 zlog_info("%s %p: route next: %p<-[%p]->%p",
 926                           ospf6_route_table_name(route->table),
 927                           (void *)route->table, (void *)route->prev,
 928                           (void *)route, (void *)route->next);
 929
 930         ospf6_route_unlock(route);
 931         if (next)
 932                 ospf6_route_lock(next);
 933
 934         return next;
 935 }
 936
 937 struct ospf6_route *ospf6_route_best_next(struct ospf6_route *route)
 938 {
 939         struct route_node *rnode;
 940         struct ospf6_route *next;
 941
 942         ospf6_route_unlock(route);
 943
 944         rnode = route->rnode;
 945         route_lock_node(rnode);
 946         rnode = route_next(rnode);
 947         while (rnode && rnode->info == NULL)
 948                 rnode = route_next(rnode);
 949         if (rnode == NULL)
 950                 return NULL;
 951         route_unlock_node(rnode);
 952
 953         assert(rnode->info);
 954         next = (struct ospf6_route *)rnode->info;
 955         ospf6_route_lock(next);
 956         return next;
 957 }
 958
 959 struct ospf6_route *ospf6_route_match_head(struct prefix *prefix,
 960                                            struct ospf6_route_table *table)
 961 {
 962         struct route_node *node;
 963         struct ospf6_route *route;
 964
 965         /* Walk down tree. */
 966         node = table->table->top;
 967         while (node && node->p.prefixlen < prefix->prefixlen
 968                && prefix_match(&node->p, prefix))
 969                 node = node->link[prefix_bit(&prefix->u.prefix,
 970                                              node->p.prefixlen)];
 971
 972         if (node)
 973                 route_lock_node(node);
 974         while (node && node->info == NULL)
 975                 node = route_next(node);
 976         if (node == NULL)
 977                 return NULL;
 978         route_unlock_node(node);
 979
 980         if (!prefix_match(prefix, &node->p))
 981                 return NULL;
 982
 983         route = node->info;
 984         ospf6_route_lock(route);
 985         return route;
 986 }
 987
 988 struct ospf6_route *ospf6_route_match_next(struct prefix *prefix,
 989                                            struct ospf6_route *route)
 990 {
 991         struct ospf6_route *next;
 992
 993         next = ospf6_route_next(route);
 994         if (next && !prefix_match(prefix, &next->prefix)) {
 995                 ospf6_route_unlock(next);
 996                 next = NULL;
 997         }
 998
 999         return next;
1000 }
1001
1002 void ospf6_route_remove_all(struct ospf6_route_table *table)
1003 {
1004         struct ospf6_route *route;
1005         for (route = ospf6_route_head(table); route;
1006              route = ospf6_route_next(route))
1007                 ospf6_route_remove(route, table);
1008 }
1009
1010 struct ospf6_route_table *ospf6_route_table_create(int s, int t)
1011 {
1012         struct ospf6_route_table *new;
1013         new = XCALLOC(MTYPE_OSPF6_ROUTE, sizeof(struct ospf6_route_table));
1014         new->table = route_table_init();
1015         new->scope_type = s;
1016         new->table_type = t;
1017         return new;
1018 }
1019
1020 void ospf6_route_table_delete(struct ospf6_route_table *table)
1021 {
1022         ospf6_route_remove_all(table);
1023         bf_free(table->idspace);
1024         route_table_finish(table->table);
1025         XFREE(MTYPE_OSPF6_ROUTE, table);
1026 }
1027
1028
1029 /* VTY commands */
1030 void ospf6_route_show(struct vty *vty, struct ospf6_route *route)
1031 {
1032         int i;
1033         char destination[PREFIX2STR_BUFFER], nexthop[64];
1034         char duration[64];
1035         const char *ifname;
1036         struct timeval now, res;
1037         struct listnode *node;
1038         struct ospf6_nexthop *nh;
1039
1040         monotime(&now);
1041         timersub(&now, &route->changed, &res);
1042         timerstring(&res, duration, sizeof(duration));
1043
1044         /* destination */
1045         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
1046                 ospf6_linkstate_prefix2str(&route->prefix, destination,
1047                                            sizeof(destination));
1048         else if (route->type == OSPF6_DEST_TYPE_ROUTER)
1049                 inet_ntop(route->prefix.family, &route->prefix.u.prefix,
1050                           destination, sizeof(destination));
1051         else
1052                 prefix2str(&route->prefix, destination, sizeof(destination));
1053
1054         i = 0;
1055         for (ALL_LIST_ELEMENTS_RO(route->nh_list, node, nh)) {
1056                 /* nexthop */
1057                 inet_ntop(AF_INET6, &nh->address, nexthop, sizeof(nexthop));
1058                 ifname = ifindex2ifname(nh->ifindex, VRF_DEFAULT);
1059
1060                 if (!i) {
1061                         vty_out(vty, "%c%1s %2s %-30s %-25s %6.*s %s\n",
1062                                 (ospf6_route_is_best(route) ? '*' : ' '),
1063                                 OSPF6_DEST_TYPE_SUBSTR(route->type),
1064                                 OSPF6_PATH_TYPE_SUBSTR(route->path.type),
1065                                 destination, nexthop, IFNAMSIZ, ifname,
1066                                 duration);
1067                         i++;
1068                 } else
1069                         vty_out(vty, "%c%1s %2s %-30s %-25s %6.*s %s\n", ' ',
1070                                 "", "", "", nexthop, IFNAMSIZ, ifname, "");
1071         }
1072 }
1073
1074 void ospf6_route_show_detail(struct vty *vty, struct ospf6_route *route)
1075 {
1076         const char *ifname;
1077         char destination[PREFIX2STR_BUFFER], nexthop[64];
1078         char area_id[16], id[16], adv_router[16], capa[16], options[16];
1079         struct timeval now, res;
1080         char duration[64];
1081         struct listnode *node;
1082         struct ospf6_nexthop *nh;
1083
1084         monotime(&now);
1085
1086         /* destination */
1087         if (route->type == OSPF6_DEST_TYPE_LINKSTATE)
1088                 ospf6_linkstate_prefix2str(&route->prefix, destination,
1089                                            sizeof(destination));
1090         else if (route->type == OSPF6_DEST_TYPE_ROUTER)
1091                 inet_ntop(route->prefix.family, &route->prefix.u.prefix,
1092                           destination, sizeof(destination));
1093         else
1094                 prefix2str(&route->prefix, destination, sizeof(destination));
1095         vty_out(vty, "Destination: %s\n", destination);
1096
1097         /* destination type */
1098         vty_out(vty, "Destination type: %s\n",
1099                 OSPF6_DEST_TYPE_NAME(route->type));
1100
1101         /* Time */
1102         timersub(&now, &route->installed, &res);
1103         timerstring(&res, duration, sizeof(duration));
1104         vty_out(vty, "Installed Time: %s ago\n", duration);
1105
1106         timersub(&now, &route->changed, &res);
1107         timerstring(&res, duration, sizeof(duration));
1108         vty_out(vty, "  Changed Time: %s ago\n", duration);
1109
1110         /* Debugging info */
1111         vty_out(vty, "Lock: %d Flags: %s%s%s%s\n", route->lock,
1112                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_BEST) ? "B" : "-"),
1113                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_ADD) ? "A" : "-"),
1114                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_REMOVE) ? "R" : "-"),
1115                 (CHECK_FLAG(route->flag, OSPF6_ROUTE_CHANGE) ? "C" : "-"));
1116         vty_out(vty, "Memory: prev: %p this: %p next: %p\n",
1117                 (void *)route->prev, (void *)route, (void *)route->next);
1118
1119         /* Path section */
1120
1121         /* Area-ID */
1122         inet_ntop(AF_INET, &route->path.area_id, area_id, sizeof(area_id));
1123         vty_out(vty, "Associated Area: %s\n", area_id);
1124
1125         /* Path type */
1126         vty_out(vty, "Path Type: %s\n", OSPF6_PATH_TYPE_NAME(route->path.type));
1127
1128         /* LS Origin */
1129         inet_ntop(AF_INET, &route->path.origin.id, id, sizeof(id));
1130         inet_ntop(AF_INET, &route->path.origin.adv_router, adv_router,
1131                   sizeof(adv_router));
1132         vty_out(vty, "LS Origin: %s Id: %s Adv: %s\n",
1133                 ospf6_lstype_name(route->path.origin.type), id, adv_router);
1134
1135         /* Options */
1136         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1137         vty_out(vty, "Options: %s\n", options);
1138
1139         /* Router Bits */
1140         ospf6_capability_printbuf(route->path.router_bits, capa, sizeof(capa));
1141         vty_out(vty, "Router Bits: %s\n", capa);
1142
1143         /* Prefix Options */
1144         vty_out(vty, "Prefix Options: xxx\n");
1145
1146         /* Metrics */
1147         vty_out(vty, "Metric Type: %d\n", route->path.metric_type);
1148         vty_out(vty, "Metric: %d (%d)\n", route->path.cost,
1149                 route->path.u.cost_e2);
1150
1151         vty_out(vty, "Paths count: %u\n", route->paths->count);
1152         vty_out(vty, "Nexthop count: %u\n", route->nh_list->count);
1153         /* Nexthops */
1154         vty_out(vty, "Nexthop:\n");
1155         for (ALL_LIST_ELEMENTS_RO(route->nh_list, node, nh)) {
1156                 /* nexthop */
1157                 inet_ntop(AF_INET6, &nh->address, nexthop, sizeof(nexthop));
1158                 ifname = ifindex2ifname(nh->ifindex, VRF_DEFAULT);
1159                 vty_out(vty, "  %s %.*s\n", nexthop, IFNAMSIZ, ifname);
1160         }
1161         vty_out(vty, "\n");
1162 }
1163
1164 static void ospf6_route_show_table_summary(struct vty *vty,
1165                                            struct ospf6_route_table *table)
1166 {
1167         struct ospf6_route *route, *prev = NULL;
1168         int i, pathtype[OSPF6_PATH_TYPE_MAX];
1169         unsigned int number = 0;
1170         int nh_count = 0, nhinval = 0, ecmp = 0;
1171         int alternative = 0, destination = 0;
1172
1173         for (i = 0; i < OSPF6_PATH_TYPE_MAX; i++)
1174                 pathtype[i] = 0;
1175
1176         for (route = ospf6_route_head(table); route;
1177              route = ospf6_route_next(route)) {
1178                 if (prev == NULL || !ospf6_route_is_same(prev, route))
1179                         destination++;
1180                 else
1181                         alternative++;
1182                 nh_count = ospf6_num_nexthops(route->nh_list);
1183                 if (!nh_count)
1184                         nhinval++;
1185                 else if (nh_count > 1)
1186                         ecmp++;
1187                 pathtype[route->path.type]++;
1188                 number++;
1189
1190                 prev = route;
1191         }
1192
1193         assert(number == table->count);
1194
1195         vty_out(vty, "Number of OSPFv3 routes: %d\n", number);
1196         vty_out(vty, "Number of Destination: %d\n", destination);
1197         vty_out(vty, "Number of Alternative routes: %d\n", alternative);
1198         vty_out(vty, "Number of Equal Cost Multi Path: %d\n", ecmp);
1199         for (i = OSPF6_PATH_TYPE_INTRA; i <= OSPF6_PATH_TYPE_EXTERNAL2; i++) {
1200                 vty_out(vty, "Number of %s routes: %d\n",
1201                         OSPF6_PATH_TYPE_NAME(i), pathtype[i]);
1202         }
1203 }
1204
1205 static void ospf6_route_show_table_prefix(struct vty *vty,
1206                                           struct prefix *prefix,
1207                                           struct ospf6_route_table *table)
1208 {
1209         struct ospf6_route *route;
1210
1211         route = ospf6_route_lookup(prefix, table);
1212         if (route == NULL)
1213                 return;
1214
1215         ospf6_route_lock(route);
1216         while (route && ospf6_route_is_prefix(prefix, route)) {
1217                 /* Specifying a prefix will always display details */
1218                 ospf6_route_show_detail(vty, route);
1219                 route = ospf6_route_next(route);
1220         }
1221         if (route)
1222                 ospf6_route_unlock(route);
1223 }
1224
1225 static void ospf6_route_show_table_address(struct vty *vty,
1226                                            struct prefix *prefix,
1227                                            struct ospf6_route_table *table)
1228 {
1229         struct ospf6_route *route;
1230
1231         route = ospf6_route_lookup_bestmatch(prefix, table);
1232         if (route == NULL)
1233                 return;
1234
1235         prefix = &route->prefix;
1236         ospf6_route_lock(route);
1237         while (route && ospf6_route_is_prefix(prefix, route)) {
1238                 /* Specifying a prefix will always display details */
1239                 ospf6_route_show_detail(vty, route);
1240                 route = ospf6_route_next(route);
1241         }
1242         if (route)
1243                 ospf6_route_unlock(route);
1244 }
1245
1246 static void ospf6_route_show_table_match(struct vty *vty, int detail,
1247                                          struct prefix *prefix,
1248                                          struct ospf6_route_table *table)
1249 {
1250         struct ospf6_route *route;
1251         assert(prefix->family);
1252
1253         route = ospf6_route_match_head(prefix, table);
1254         while (route) {
1255                 if (detail)
1256                         ospf6_route_show_detail(vty, route);
1257                 else
1258                         ospf6_route_show(vty, route);
1259                 route = ospf6_route_match_next(prefix, route);
1260         }
1261 }
1262
1263 static void ospf6_route_show_table_type(struct vty *vty, int detail,
1264                                         uint8_t type,
1265                                         struct ospf6_route_table *table)
1266 {
1267         struct ospf6_route *route;
1268
1269         route = ospf6_route_head(table);
1270         while (route) {
1271                 if (route->path.type == type) {
1272                         if (detail)
1273                                 ospf6_route_show_detail(vty, route);
1274                         else
1275                                 ospf6_route_show(vty, route);
1276                 }
1277                 route = ospf6_route_next(route);
1278         }
1279 }
1280
1281 static void ospf6_route_show_table(struct vty *vty, int detail,
1282                                    struct ospf6_route_table *table)
1283 {
1284         struct ospf6_route *route;
1285
1286         route = ospf6_route_head(table);
1287         while (route) {
1288                 if (detail)
1289                         ospf6_route_show_detail(vty, route);
1290                 else
1291                         ospf6_route_show(vty, route);
1292                 route = ospf6_route_next(route);
1293         }
1294 }
1295
1296 int ospf6_route_table_show(struct vty *vty, int argc_start, int argc,
1297                            struct cmd_token **argv,
1298                            struct ospf6_route_table *table)
1299 {
1300         int summary = 0;
1301         int match = 0;
1302         int detail = 0;
1303         int slash = 0;
1304         int isprefix = 0;
1305         int i, ret;
1306         struct prefix prefix;
1307         uint8_t type = 0;
1308
1309         memset(&prefix, 0, sizeof(struct prefix));
1310
1311         for (i = argc_start; i < argc; i++) {
1312                 if (strmatch(argv[i]->text, "summary")) {
1313                         summary++;
1314                         continue;
1315                 }
1316
1317                 if (strmatch(argv[i]->text, "intra-area")) {
1318                         type = OSPF6_PATH_TYPE_INTRA;
1319                         continue;
1320                 }
1321
1322                 if (strmatch(argv[i]->text, "inter-area")) {
1323                         type = OSPF6_PATH_TYPE_INTER;
1324                         continue;
1325                 }
1326
1327                 if (strmatch(argv[i]->text, "external-1")) {
1328                         type = OSPF6_PATH_TYPE_EXTERNAL1;
1329                         continue;
1330                 }
1331
1332                 if (strmatch(argv[i]->text, "external-2")) {
1333                         type = OSPF6_PATH_TYPE_EXTERNAL2;
1334                         continue;
1335                 }
1336
1337                 if (strmatch(argv[i]->text, "detail")) {
1338                         detail++;
1339                         continue;
1340                 }
1341
1342                 if (strmatch(argv[i]->text, "match")) {
1343                         match++;
1344                         continue;
1345                 }
1346
1347                 ret = str2prefix(argv[i]->arg, &prefix);
1348                 if (ret == 1 && prefix.family == AF_INET6) {
1349                         isprefix++;
1350                         if (strchr(argv[i]->arg, '/'))
1351                                 slash++;
1352                         continue;
1353                 }
1354
1355                 vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1356                 return CMD_SUCCESS;
1357         }
1358
1359         /* Give summary of this route table */
1360         if (summary) {
1361                 ospf6_route_show_table_summary(vty, table);
1362                 return CMD_SUCCESS;
1363         }
1364
1365         /* Give exact prefix-match route */
1366         if (isprefix && !match) {
1367                 /* If exact address, give best matching route */
1368                 if (!slash)
1369                         ospf6_route_show_table_address(vty, &prefix, table);
1370                 else
1371                         ospf6_route_show_table_prefix(vty, &prefix, table);
1372
1373                 return CMD_SUCCESS;
1374         }
1375
1376         if (match)
1377                 ospf6_route_show_table_match(vty, detail, &prefix, table);
1378         else if (type)
1379                 ospf6_route_show_table_type(vty, detail, type, table);
1380         else
1381                 ospf6_route_show_table(vty, detail, table);
1382
1383         return CMD_SUCCESS;
1384 }
1385
1386 static void ospf6_linkstate_show_header(struct vty *vty)
1387 {
1388         vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %s\n", "Type", "Router-ID",
1389                 "Net-ID", "Rtr-Bits", "Options", "Cost");
1390 }
1391
1392 static void ospf6_linkstate_show(struct vty *vty, struct ospf6_route *route)
1393 {
1394         uint32_t router, id;
1395         char routername[16], idname[16], rbits[16], options[16];
1396
1397         router = ospf6_linkstate_prefix_adv_router(&route->prefix);
1398         inet_ntop(AF_INET, &router, routername, sizeof(routername));
1399         id = ospf6_linkstate_prefix_id(&route->prefix);
1400         inet_ntop(AF_INET, &id, idname, sizeof(idname));
1401
1402         ospf6_capability_printbuf(route->path.router_bits, rbits,
1403                                   sizeof(rbits));
1404         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1405
1406         if (ntohl(id))
1407                 vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %lu\n", "Network",
1408                         routername, idname, rbits, options,
1409                         (unsigned long)route->path.cost);
1410         else
1411                 vty_out(vty, "%-7s %-15s %-15s %-8s %-14s %lu\n", "Router",
1412                         routername, idname, rbits, options,
1413                         (unsigned long)route->path.cost);
1414 }
1415
1416
1417 static void ospf6_linkstate_show_table_exact(struct vty *vty,
1418                                              struct prefix *prefix,
1419                                              struct ospf6_route_table *table)
1420 {
1421         struct ospf6_route *route;
1422
1423         route = ospf6_route_lookup(prefix, table);
1424         if (route == NULL)
1425                 return;
1426
1427         ospf6_route_lock(route);
1428         while (route && ospf6_route_is_prefix(prefix, route)) {
1429                 /* Specifying a prefix will always display details */
1430                 ospf6_route_show_detail(vty, route);
1431                 route = ospf6_route_next(route);
1432         }
1433         if (route)
1434                 ospf6_route_unlock(route);
1435 }
1436
1437 static void ospf6_linkstate_show_table(struct vty *vty, int detail,
1438                                        struct ospf6_route_table *table)
1439 {
1440         struct ospf6_route *route;
1441
1442         if (!detail)
1443                 ospf6_linkstate_show_header(vty);
1444
1445         route = ospf6_route_head(table);
1446         while (route) {
1447                 if (detail)
1448                         ospf6_route_show_detail(vty, route);
1449                 else
1450                         ospf6_linkstate_show(vty, route);
1451                 route = ospf6_route_next(route);
1452         }
1453 }
1454
1455 int ospf6_linkstate_table_show(struct vty *vty, int idx_ipv4, int argc,
1456                                struct cmd_token **argv,
1457                                struct ospf6_route_table *table)
1458 {
1459         int detail = 0;
1460         int is_id = 0;
1461         int is_router = 0;
1462         int i, ret;
1463         struct prefix router, id, prefix;
1464
1465         memset(&router, 0, sizeof(struct prefix));
1466         memset(&id, 0, sizeof(struct prefix));
1467         memset(&prefix, 0, sizeof(struct prefix));
1468
1469         for (i = idx_ipv4; i < argc; i++) {
1470                 if (strmatch(argv[i]->text, "detail")) {
1471                         detail++;
1472                         continue;
1473                 }
1474
1475                 if (!is_router) {
1476                         ret = str2prefix(argv[i]->arg, &router);
1477                         if (ret == 1 && router.family == AF_INET) {
1478                                 is_router++;
1479                                 continue;
1480                         }
1481                         vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1482                         return CMD_SUCCESS;
1483                 }
1484
1485                 if (!is_id) {
1486                         ret = str2prefix(argv[i]->arg, &id);
1487                         if (ret == 1 && id.family == AF_INET) {
1488                                 is_id++;
1489                                 continue;
1490                         }
1491                         vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1492                         return CMD_SUCCESS;
1493                 }
1494
1495                 vty_out(vty, "Malformed argument: %s\n", argv[i]->arg);
1496                 return CMD_SUCCESS;
1497         }
1498
1499         if (is_router)
1500                 ospf6_linkstate_prefix(router.u.prefix4.s_addr,
1501                                        id.u.prefix4.s_addr, &prefix);
1502
1503         if (prefix.family)
1504                 ospf6_linkstate_show_table_exact(vty, &prefix, table);
1505         else
1506                 ospf6_linkstate_show_table(vty, detail, table);
1507
1508         return CMD_SUCCESS;
1509 }
1510
1511
1512 void ospf6_brouter_show_header(struct vty *vty)
1513 {
1514         vty_out(vty, "%-15s %-8s %-14s %-10s %-15s\n", "Router-ID", "Rtr-Bits",
1515                 "Options", "Path-Type", "Area");
1516 }
1517
1518 void ospf6_brouter_show(struct vty *vty, struct ospf6_route *route)
1519 {
1520         uint32_t adv_router;
1521         char adv[16], rbits[16], options[16], area[16];
1522
1523         adv_router = ospf6_linkstate_prefix_adv_router(&route->prefix);
1524         inet_ntop(AF_INET, &adv_router, adv, sizeof(adv));
1525         ospf6_capability_printbuf(route->path.router_bits, rbits,
1526                                   sizeof(rbits));
1527         ospf6_options_printbuf(route->path.options, options, sizeof(options));
1528         inet_ntop(AF_INET, &route->path.area_id, area, sizeof(area));
1529
1530         /* vty_out (vty, "%-15s %-8s %-14s %-10s %-15s\n",
1531                  "Router-ID", "Rtr-Bits", "Options", "Path-Type", "Area"); */
1532         vty_out(vty, "%-15s %-8s %-14s %-10s %-15s\n", adv, rbits, options,
1533                 OSPF6_PATH_TYPE_NAME(route->path.type), area);
1534 }
1535
1536 DEFUN (debug_ospf6_route,
1537        debug_ospf6_route_cmd,
1538        "debug ospf6 route <table|intra-area|inter-area|memory>",
1539        DEBUG_STR
1540        OSPF6_STR
1541        "Debug routes\n"
1542        "Debug route table calculation\n"
1543        "Debug intra-area route calculation\n"
1544        "Debug inter-area route calculation\n"
1545        "Debug route memory use\n"
1546        )
1547 {
1548         int idx_type = 3;
1549         unsigned char level = 0;
1550
1551         if (!strcmp(argv[idx_type]->text, "table"))
1552                 level = OSPF6_DEBUG_ROUTE_TABLE;
1553         else if (!strcmp(argv[idx_type]->text, "intra-area"))
1554                 level = OSPF6_DEBUG_ROUTE_INTRA;
1555         else if (!strcmp(argv[idx_type]->text, "inter-area"))
1556                 level = OSPF6_DEBUG_ROUTE_INTER;
1557         else if (!strcmp(argv[idx_type]->text, "memory"))
1558                 level = OSPF6_DEBUG_ROUTE_MEMORY;
1559         OSPF6_DEBUG_ROUTE_ON(level);
1560         return CMD_SUCCESS;
1561 }
1562
1563 DEFUN (no_debug_ospf6_route,
1564        no_debug_ospf6_route_cmd,
1565        "no debug ospf6 route <table|intra-area|inter-area|memory>",
1566        NO_STR
1567        DEBUG_STR
1568        OSPF6_STR
1569        "Debug routes\n"
1570        "Debug route table calculation\n"
1571        "Debug intra-area route calculation\n"
1572        "Debug inter-area route calculation\n"
1573        "Debug route memory use\n")
1574 {
1575         int idx_type = 4;
1576         unsigned char level = 0;
1577
1578         if (!strcmp(argv[idx_type]->text, "table"))
1579                 level = OSPF6_DEBUG_ROUTE_TABLE;
1580         else if (!strcmp(argv[idx_type]->text, "intra-area"))
1581                 level = OSPF6_DEBUG_ROUTE_INTRA;
1582         else if (!strcmp(argv[idx_type]->text, "inter-area"))
1583                 level = OSPF6_DEBUG_ROUTE_INTER;
1584         else if (!strcmp(argv[idx_type]->text, "memory"))
1585                 level = OSPF6_DEBUG_ROUTE_MEMORY;
1586         OSPF6_DEBUG_ROUTE_OFF(level);
1587         return CMD_SUCCESS;
1588 }
1589
1590 int config_write_ospf6_debug_route(struct vty *vty)
1591 {
1592         if (IS_OSPF6_DEBUG_ROUTE(TABLE))
1593                 vty_out(vty, "debug ospf6 route table\n");
1594         if (IS_OSPF6_DEBUG_ROUTE(INTRA))
1595                 vty_out(vty, "debug ospf6 route intra-area\n");
1596         if (IS_OSPF6_DEBUG_ROUTE(INTER))
1597                 vty_out(vty, "debug ospf6 route inter-area\n");
1598         if (IS_OSPF6_DEBUG_ROUTE(MEMORY))
1599                 vty_out(vty, "debug ospf6 route memory\n");
1600
1601         return 0;
1602 }
1603
1604 void install_element_ospf6_debug_route(void)
1605 {
1606         install_element(ENABLE_NODE, &debug_ospf6_route_cmd);
1607         install_element(ENABLE_NODE, &no_debug_ospf6_route_cmd);
1608         install_element(CONFIG_NODE, &debug_ospf6_route_cmd);
1609         install_element(CONFIG_NODE, &no_debug_ospf6_route_cmd);
1610 }