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