Annotation of embedaddon/quagga/ospf6d/ospf6_area.c, revision 1.1

1.1     ! misho       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
        !            17:  * along with GNU Zebra; see the file COPYING.  If not, write to the 
        !            18:  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 
        !            19:  * Boston, MA 02111-1307, USA.  
        !            20:  */
        !            21: 
        !            22: #include <zebra.h>
        !            23: 
        !            24: #include "log.h"
        !            25: #include "memory.h"
        !            26: #include "linklist.h"
        !            27: #include "thread.h"
        !            28: #include "vty.h"
        !            29: #include "command.h"
        !            30: #include "if.h"
        !            31: #include "prefix.h"
        !            32: #include "table.h"
        !            33: #include "plist.h"
        !            34: #include "filter.h"
        !            35: 
        !            36: #include "ospf6_proto.h"
        !            37: #include "ospf6_lsa.h"
        !            38: #include "ospf6_lsdb.h"
        !            39: #include "ospf6_route.h"
        !            40: #include "ospf6_spf.h"
        !            41: #include "ospf6_top.h"
        !            42: #include "ospf6_area.h"
        !            43: #include "ospf6_interface.h"
        !            44: #include "ospf6_intra.h"
        !            45: #include "ospf6_abr.h"
        !            46: #include "ospf6d.h"
        !            47: 
        !            48: int
        !            49: ospf6_area_cmp (void *va, void *vb)
        !            50: {
        !            51:   struct ospf6_area *oa = (struct ospf6_area *) va;
        !            52:   struct ospf6_area *ob = (struct ospf6_area *) vb;
        !            53:   return (ntohl (oa->area_id) < ntohl (ob->area_id) ? -1 : 1);
        !            54: }
        !            55: 
        !            56: /* schedule routing table recalculation */
        !            57: static void
        !            58: ospf6_area_lsdb_hook_add (struct ospf6_lsa *lsa)
        !            59: {
        !            60:   switch (ntohs (lsa->header->type))
        !            61:     {
        !            62:     case OSPF6_LSTYPE_ROUTER:
        !            63:     case OSPF6_LSTYPE_NETWORK:
        !            64:       if (IS_OSPF6_DEBUG_EXAMIN_TYPE (lsa->header->type))
        !            65:         {
        !            66:           zlog_debug ("Examin %s", lsa->name);
        !            67:           zlog_debug ("Schedule SPF Calculation for %s",
        !            68:                      OSPF6_AREA (lsa->lsdb->data)->name);
        !            69:         }
        !            70:       ospf6_spf_schedule (OSPF6_AREA (lsa->lsdb->data));
        !            71:       break;
        !            72: 
        !            73:     case OSPF6_LSTYPE_INTRA_PREFIX:
        !            74:       ospf6_intra_prefix_lsa_add (lsa);
        !            75:       break;
        !            76: 
        !            77:     case OSPF6_LSTYPE_INTER_PREFIX:
        !            78:     case OSPF6_LSTYPE_INTER_ROUTER:
        !            79:       ospf6_abr_examin_summary (lsa, (struct ospf6_area *) lsa->lsdb->data);
        !            80:       break;
        !            81: 
        !            82:     default:
        !            83:       break;
        !            84:     }
        !            85: }
        !            86: 
        !            87: static void
        !            88: ospf6_area_lsdb_hook_remove (struct ospf6_lsa *lsa)
        !            89: {
        !            90:   switch (ntohs (lsa->header->type))
        !            91:     {
        !            92:     case OSPF6_LSTYPE_ROUTER:
        !            93:     case OSPF6_LSTYPE_NETWORK:
        !            94:       if (IS_OSPF6_DEBUG_EXAMIN_TYPE (lsa->header->type))
        !            95:         {
        !            96:           zlog_debug ("LSA disappearing: %s", lsa->name);
        !            97:           zlog_debug ("Schedule SPF Calculation for %s",
        !            98:                      OSPF6_AREA (lsa->lsdb->data)->name);
        !            99:         }
        !           100:       ospf6_spf_schedule (OSPF6_AREA (lsa->lsdb->data));
        !           101:       break;
        !           102: 
        !           103:     case OSPF6_LSTYPE_INTRA_PREFIX:
        !           104:       ospf6_intra_prefix_lsa_remove (lsa);
        !           105:       break;
        !           106: 
        !           107:     case OSPF6_LSTYPE_INTER_PREFIX:
        !           108:     case OSPF6_LSTYPE_INTER_ROUTER:
        !           109:       ospf6_abr_examin_summary (lsa, (struct ospf6_area *) lsa->lsdb->data);
        !           110:       break;
        !           111: 
        !           112:     default:
        !           113:       break;
        !           114:     }
        !           115: }
        !           116: 
        !           117: static void
        !           118: ospf6_area_route_hook_add (struct ospf6_route *route)
        !           119: {
        !           120:   struct ospf6_route *copy = ospf6_route_copy (route);
        !           121:   ospf6_route_add (copy, ospf6->route_table);
        !           122: }
        !           123: 
        !           124: static void
        !           125: ospf6_area_route_hook_remove (struct ospf6_route *route)
        !           126: {
        !           127:   struct ospf6_route *copy;
        !           128: 
        !           129:   copy = ospf6_route_lookup_identical (route, ospf6->route_table);
        !           130:   if (copy)
        !           131:     ospf6_route_remove (copy, ospf6->route_table);
        !           132: }
        !           133: 
        !           134: /* Make new area structure */
        !           135: struct ospf6_area *
        !           136: ospf6_area_create (u_int32_t area_id, struct ospf6 *o)
        !           137: {
        !           138:   struct ospf6_area *oa;
        !           139:   struct ospf6_route *route;
        !           140: 
        !           141:   oa = XCALLOC (MTYPE_OSPF6_AREA, sizeof (struct ospf6_area));
        !           142: 
        !           143:   inet_ntop (AF_INET, &area_id, oa->name, sizeof (oa->name));
        !           144:   oa->area_id = area_id;
        !           145:   oa->if_list = list_new ();
        !           146: 
        !           147:   oa->lsdb = ospf6_lsdb_create (oa);
        !           148:   oa->lsdb->hook_add = ospf6_area_lsdb_hook_add;
        !           149:   oa->lsdb->hook_remove = ospf6_area_lsdb_hook_remove;
        !           150:   oa->lsdb_self = ospf6_lsdb_create (oa);
        !           151: 
        !           152:   oa->spf_table = OSPF6_ROUTE_TABLE_CREATE (AREA, SPF_RESULTS);
        !           153:   oa->spf_table->scope = oa;
        !           154:   oa->route_table = OSPF6_ROUTE_TABLE_CREATE (AREA, ROUTES);
        !           155:   oa->route_table->scope = oa;
        !           156:   oa->route_table->hook_add = ospf6_area_route_hook_add;
        !           157:   oa->route_table->hook_remove = ospf6_area_route_hook_remove;
        !           158: 
        !           159:   oa->range_table = OSPF6_ROUTE_TABLE_CREATE (AREA, PREFIX_RANGES);
        !           160:   oa->range_table->scope = oa;
        !           161:   oa->summary_prefix = OSPF6_ROUTE_TABLE_CREATE (AREA, SUMMARY_PREFIXES);
        !           162:   oa->summary_prefix->scope = oa;
        !           163:   oa->summary_router = OSPF6_ROUTE_TABLE_CREATE (AREA, SUMMARY_ROUTERS);
        !           164:   oa->summary_router->scope = oa;
        !           165: 
        !           166:   /* set default options */
        !           167:   OSPF6_OPT_SET (oa->options, OSPF6_OPT_V6);
        !           168:   OSPF6_OPT_SET (oa->options, OSPF6_OPT_E);
        !           169:   OSPF6_OPT_SET (oa->options, OSPF6_OPT_R);
        !           170: 
        !           171:   oa->ospf6 = o;
        !           172:   listnode_add_sort (o->area_list, oa);
        !           173: 
        !           174:   /* import athoer area's routes as inter-area routes */
        !           175:   for (route = ospf6_route_head (o->route_table); route;
        !           176:        route = ospf6_route_next (route))
        !           177:     ospf6_abr_originate_summary_to_area (route, oa);
        !           178: 
        !           179:   return oa;
        !           180: }
        !           181: 
        !           182: void
        !           183: ospf6_area_delete (struct ospf6_area *oa)
        !           184: {
        !           185:   struct listnode *n, *nnode;
        !           186:   struct ospf6_interface *oi;
        !           187: 
        !           188:   ospf6_route_table_delete (oa->range_table);
        !           189:   ospf6_route_table_delete (oa->summary_prefix);
        !           190:   ospf6_route_table_delete (oa->summary_router);
        !           191: 
        !           192:   /* ospf6 interface list */
        !           193:   for (ALL_LIST_ELEMENTS (oa->if_list, n, nnode, oi))
        !           194:     {
        !           195:       ospf6_interface_delete (oi);
        !           196:     }
        !           197:   list_delete (oa->if_list);
        !           198: 
        !           199:   ospf6_lsdb_delete (oa->lsdb);
        !           200:   ospf6_lsdb_delete (oa->lsdb_self);
        !           201: 
        !           202:   ospf6_spf_table_finish (oa->spf_table);
        !           203:   ospf6_route_table_delete (oa->spf_table);
        !           204:   ospf6_route_table_delete (oa->route_table);
        !           205: 
        !           206:   THREAD_OFF (oa->thread_spf_calculation);
        !           207:   THREAD_OFF (oa->thread_route_calculation);
        !           208: 
        !           209:   listnode_delete (oa->ospf6->area_list, oa);
        !           210:   oa->ospf6 = NULL;
        !           211: 
        !           212:   /* free area */
        !           213:   XFREE (MTYPE_OSPF6_AREA, oa);
        !           214: }
        !           215: 
        !           216: struct ospf6_area *
        !           217: ospf6_area_lookup (u_int32_t area_id, struct ospf6 *ospf6)
        !           218: {
        !           219:   struct ospf6_area *oa;
        !           220:   struct listnode *n;
        !           221: 
        !           222:   for (ALL_LIST_ELEMENTS_RO (ospf6->area_list, n, oa))
        !           223:     if (oa->area_id == area_id)
        !           224:       return oa;
        !           225: 
        !           226:   return (struct ospf6_area *) NULL;
        !           227: }
        !           228: 
        !           229: static struct ospf6_area *
        !           230: ospf6_area_get (u_int32_t area_id, struct ospf6 *o)
        !           231: {
        !           232:   struct ospf6_area *oa;
        !           233:   oa = ospf6_area_lookup (area_id, o);
        !           234:   if (oa == NULL)
        !           235:     oa = ospf6_area_create (area_id, o);
        !           236:   return oa;
        !           237: }
        !           238: 
        !           239: void
        !           240: ospf6_area_enable (struct ospf6_area *oa)
        !           241: {
        !           242:   struct listnode *node, *nnode;
        !           243:   struct ospf6_interface *oi;
        !           244: 
        !           245:   SET_FLAG (oa->flag, OSPF6_AREA_ENABLE);
        !           246: 
        !           247:   for (ALL_LIST_ELEMENTS (oa->if_list, node, nnode, oi))
        !           248:     ospf6_interface_enable (oi);
        !           249: }
        !           250: 
        !           251: void
        !           252: ospf6_area_disable (struct ospf6_area *oa)
        !           253: {
        !           254:   struct listnode *node, *nnode;
        !           255:   struct ospf6_interface *oi;
        !           256: 
        !           257:   UNSET_FLAG (oa->flag, OSPF6_AREA_ENABLE);
        !           258: 
        !           259:   for (ALL_LIST_ELEMENTS (oa->if_list, node, nnode, oi))
        !           260:     ospf6_interface_disable (oi);
        !           261: }
        !           262: 
        !           263: 
        !           264: void
        !           265: ospf6_area_show (struct vty *vty, struct ospf6_area *oa)
        !           266: {
        !           267:   struct listnode *i;
        !           268:   struct ospf6_interface *oi;
        !           269: 
        !           270:   vty_out (vty, " Area %s%s", oa->name, VNL);
        !           271:   vty_out (vty, "     Number of Area scoped LSAs is %u%s",
        !           272:            oa->lsdb->count, VNL);
        !           273: 
        !           274:   vty_out (vty, "     Interface attached to this area:");
        !           275:   for (ALL_LIST_ELEMENTS_RO (oa->if_list, i, oi))
        !           276:     vty_out (vty, " %s", oi->interface->name);
        !           277:   
        !           278:   vty_out (vty, "%s", VNL);
        !           279: }
        !           280: 
        !           281: 
        !           282: #define OSPF6_CMD_AREA_LOOKUP(str, oa)                     \
        !           283: {                                                          \
        !           284:   u_int32_t area_id = 0;                                   \
        !           285:   if (inet_pton (AF_INET, str, &area_id) != 1)             \
        !           286:     {                                                      \
        !           287:       vty_out (vty, "Malformed Area-ID: %s%s", str, VNL);  \
        !           288:       return CMD_SUCCESS;                                  \
        !           289:     }                                                      \
        !           290:   oa = ospf6_area_lookup (area_id, ospf6);                 \
        !           291:   if (oa == NULL)                                          \
        !           292:     {                                                      \
        !           293:       vty_out (vty, "No such Area: %s%s", str, VNL);       \
        !           294:       return CMD_SUCCESS;                                  \
        !           295:     }                                                      \
        !           296: }
        !           297: 
        !           298: #define OSPF6_CMD_AREA_GET(str, oa)                        \
        !           299: {                                                          \
        !           300:   u_int32_t area_id = 0;                                   \
        !           301:   if (inet_pton (AF_INET, str, &area_id) != 1)             \
        !           302:     {                                                      \
        !           303:       vty_out (vty, "Malformed Area-ID: %s%s", str, VNL);  \
        !           304:       return CMD_SUCCESS;                                  \
        !           305:     }                                                      \
        !           306:   oa = ospf6_area_get (area_id, ospf6);                    \
        !           307: }
        !           308: 
        !           309: DEFUN (area_range,
        !           310:        area_range_cmd,
        !           311:        "area A.B.C.D range X:X::X:X/M",
        !           312:        "OSPF area parameters\n"
        !           313:        OSPF6_AREA_ID_STR
        !           314:        "Configured address range\n"
        !           315:        "Specify IPv6 prefix\n"
        !           316:        )
        !           317: {
        !           318:   int ret;
        !           319:   struct ospf6_area *oa;
        !           320:   struct prefix prefix;
        !           321:   struct ospf6_route *range;
        !           322: 
        !           323:   OSPF6_CMD_AREA_GET (argv[0], oa);
        !           324:   argc--;
        !           325:   argv++;
        !           326: 
        !           327:   ret = str2prefix (argv[0], &prefix);
        !           328:   if (ret != 1 || prefix.family != AF_INET6)
        !           329:     {
        !           330:       vty_out (vty, "Malformed argument: %s%s", argv[0], VNL);
        !           331:       return CMD_SUCCESS;
        !           332:     }
        !           333:   argc--;
        !           334:   argv++;
        !           335: 
        !           336:   range = ospf6_route_lookup (&prefix, oa->range_table);
        !           337:   if (range == NULL)
        !           338:     {
        !           339:       range = ospf6_route_create ();
        !           340:       range->type = OSPF6_DEST_TYPE_RANGE;
        !           341:       range->prefix = prefix;
        !           342:     }
        !           343: 
        !           344:   if (argc)
        !           345:     {
        !           346:       if (! strcmp (argv[0], "not-advertise"))
        !           347:         SET_FLAG (range->flag, OSPF6_ROUTE_DO_NOT_ADVERTISE);
        !           348:       else if (! strcmp (argv[0], "advertise"))
        !           349:         UNSET_FLAG (range->flag, OSPF6_ROUTE_DO_NOT_ADVERTISE);
        !           350:     }
        !           351: 
        !           352:   if (range->rnode)
        !           353:     {
        !           354:       vty_out (vty, "Range already defined: %s%s", argv[-1], VNL);
        !           355:       return CMD_WARNING;
        !           356:     }
        !           357: 
        !           358:   ospf6_route_add (range, oa->range_table);
        !           359:   return CMD_SUCCESS;
        !           360: }
        !           361: 
        !           362: ALIAS (area_range,
        !           363:        area_range_advertise_cmd,
        !           364:        "area A.B.C.D range X:X::X:X/M (advertise|not-advertise)",
        !           365:        "OSPF area parameters\n"
        !           366:        OSPF6_AREA_ID_STR
        !           367:        "Configured address range\n"
        !           368:        "Specify IPv6 prefix\n"
        !           369:        )
        !           370: 
        !           371: DEFUN (no_area_range,
        !           372:        no_area_range_cmd,
        !           373:        "no area A.B.C.D range X:X::X:X/M",
        !           374:        "OSPF area parameters\n"
        !           375:        OSPF6_AREA_ID_STR
        !           376:        "Configured address range\n"
        !           377:        "Specify IPv6 prefix\n"
        !           378:        )
        !           379: {
        !           380:   int ret;
        !           381:   struct ospf6_area *oa;
        !           382:   struct prefix prefix;
        !           383:   struct ospf6_route *range;
        !           384: 
        !           385:   OSPF6_CMD_AREA_GET (argv[0], oa);
        !           386:   argc--;
        !           387:   argv++;
        !           388: 
        !           389:   ret = str2prefix (argv[0], &prefix);
        !           390:   if (ret != 1 || prefix.family != AF_INET6)
        !           391:     {
        !           392:       vty_out (vty, "Malformed argument: %s%s", argv[0], VNL);
        !           393:       return CMD_SUCCESS;
        !           394:     }
        !           395: 
        !           396:   range = ospf6_route_lookup (&prefix, oa->range_table);
        !           397:   if (range == NULL)
        !           398:     {
        !           399:       vty_out (vty, "Range %s does not exists.%s", argv[0], VNL);
        !           400:       return CMD_SUCCESS;
        !           401:     }
        !           402: 
        !           403:   ospf6_route_remove (range, oa->range_table);
        !           404:   return CMD_SUCCESS;
        !           405: }
        !           406: 
        !           407: void
        !           408: ospf6_area_config_write (struct vty *vty)
        !           409: {
        !           410:   struct listnode *node;
        !           411:   struct ospf6_area *oa;
        !           412:   struct ospf6_route *range;
        !           413:   char buf[128];
        !           414: 
        !           415:   for (ALL_LIST_ELEMENTS_RO (ospf6->area_list, node, oa))
        !           416:     {
        !           417:       for (range = ospf6_route_head (oa->range_table); range;
        !           418:            range = ospf6_route_next (range))
        !           419:         {
        !           420:           prefix2str (&range->prefix, buf, sizeof (buf));
        !           421:           vty_out (vty, " area %s range %s%s", oa->name, buf, VNL);
        !           422:         }
        !           423:       if (PREFIX_NAME_IN (oa))
        !           424:         vty_out (vty, " area %s filter-list prefix %s in%s",
        !           425:                  oa->name, PREFIX_NAME_IN (oa), VNL);
        !           426:       if (PREFIX_NAME_OUT (oa))
        !           427:         vty_out (vty, " area %s filter-list prefix %s out%s",
        !           428:                  oa->name, PREFIX_NAME_OUT (oa), VNL);
        !           429:       if (IMPORT_NAME (oa))
        !           430:         vty_out (vty, " area %s import-list %s%s",
        !           431:                  oa->name, IMPORT_NAME (oa), VNL);
        !           432:       if (EXPORT_NAME (oa))
        !           433:         vty_out (vty, " area %s export-list %s%s",
        !           434:                  oa->name, EXPORT_NAME (oa), VNL);
        !           435:     }
        !           436: }
        !           437: 
        !           438: DEFUN (area_filter_list,
        !           439:        area_filter_list_cmd,
        !           440:        "area A.B.C.D filter-list prefix WORD (in|out)",
        !           441:        "OSPFv6 area parameters\n"
        !           442:        "OSPFv6 area ID in IP address format\n"
        !           443:        "Filter networks between OSPFv6 areas\n"
        !           444:        "Filter prefixes between OSPFv6 areas\n"
        !           445:        "Name of an IPv6 prefix-list\n"
        !           446:        "Filter networks sent to this area\n"
        !           447:        "Filter networks sent from this area\n")
        !           448: {
        !           449:   struct ospf6_area *area;
        !           450:   struct prefix_list *plist;
        !           451: 
        !           452:   OSPF6_CMD_AREA_GET (argv[0], area);
        !           453:   argc--;
        !           454:   argv++;
        !           455: 
        !           456:   plist = prefix_list_lookup (AFI_IP6, argv[0]);
        !           457:   if (strncmp (argv[1], "in", 2) == 0)
        !           458:     {
        !           459:       PREFIX_LIST_IN (area) = plist;
        !           460:       if (PREFIX_NAME_IN (area))
        !           461:        free (PREFIX_NAME_IN (area));
        !           462: 
        !           463:       PREFIX_NAME_IN (area) = strdup (argv[0]);
        !           464:       ospf6_abr_reimport (area);
        !           465:     }
        !           466:   else
        !           467:     {
        !           468:       PREFIX_LIST_OUT (area) = plist;
        !           469:       if (PREFIX_NAME_OUT (area))
        !           470:        free (PREFIX_NAME_OUT (area));
        !           471: 
        !           472:       PREFIX_NAME_OUT (area) = strdup (argv[0]);
        !           473:       ospf6_abr_enable_area (area);
        !           474:     }
        !           475: 
        !           476:   return CMD_SUCCESS;
        !           477: }
        !           478:      
        !           479: DEFUN (no_area_filter_list,
        !           480:        no_area_filter_list_cmd,
        !           481:        "no area A.B.C.D filter-list prefix WORD (in|out)",
        !           482:        NO_STR
        !           483:        "OSPFv6 area parameters\n"
        !           484:        "OSPFv6 area ID in IP address format\n"
        !           485:        "Filter networks between OSPFv6 areas\n"
        !           486:        "Filter prefixes between OSPFv6 areas\n"
        !           487:        "Name of an IPv6 prefix-list\n"
        !           488:        "Filter networks sent to this area\n"
        !           489:        "Filter networks sent from this area\n")
        !           490: {
        !           491:   struct ospf6_area *area;
        !           492:   struct prefix_list *plist;
        !           493: 
        !           494:   OSPF6_CMD_AREA_GET (argv[0], area);
        !           495:   argc--;
        !           496:   argv++;
        !           497: 
        !           498:   plist = prefix_list_lookup (AFI_IP6, argv[0]);
        !           499:   if (strncmp (argv[1], "in", 2) == 0)
        !           500:     {
        !           501:       if (PREFIX_NAME_IN (area))
        !           502:        if (strcmp (PREFIX_NAME_IN (area), argv[0]) != 0)
        !           503:          return CMD_SUCCESS;
        !           504: 
        !           505:       PREFIX_LIST_IN (area) = NULL;
        !           506:       if (PREFIX_NAME_IN (area))
        !           507:        free (PREFIX_NAME_IN (area));
        !           508: 
        !           509:       PREFIX_NAME_IN (area) = NULL;
        !           510:       ospf6_abr_reimport (area);
        !           511:     }
        !           512:   else
        !           513:     {
        !           514:       if (PREFIX_NAME_OUT (area))
        !           515:        if (strcmp (PREFIX_NAME_OUT (area), argv[0]) != 0)
        !           516:          return CMD_SUCCESS;
        !           517: 
        !           518:       PREFIX_LIST_OUT (area) = NULL;
        !           519:       if (PREFIX_NAME_OUT (area))
        !           520:        free (PREFIX_NAME_OUT (area));
        !           521: 
        !           522:       PREFIX_NAME_OUT (area) = NULL;
        !           523:       ospf6_abr_enable_area (area);
        !           524:     }
        !           525: 
        !           526:   return CMD_SUCCESS;
        !           527: }
        !           528: 
        !           529: DEFUN (area_import_list,
        !           530:        area_import_list_cmd,
        !           531:        "area A.B.C.D import-list NAME",
        !           532:        "OSPFv6 area parameters\n"
        !           533:        "OSPFv6 area ID in IP address format\n"
        !           534:        "Set the filter for networks from other areas announced to the specified one\n"
        !           535:        "Name of the acess-list\n")
        !           536: {
        !           537:   struct ospf6_area *area;
        !           538:   struct access_list *list;
        !           539: 
        !           540:   OSPF6_CMD_AREA_GET(argv[0], area);
        !           541: 
        !           542:   list = access_list_lookup (AFI_IP6, argv[1]);
        !           543: 
        !           544:   IMPORT_LIST (area) = list;
        !           545: 
        !           546:   if (IMPORT_NAME (area))
        !           547:     free (IMPORT_NAME (area));
        !           548: 
        !           549:   IMPORT_NAME (area) = strdup (argv[1]);
        !           550:   ospf6_abr_reimport (area);
        !           551: 
        !           552:   return CMD_SUCCESS; 
        !           553: }
        !           554: 
        !           555: DEFUN (no_area_import_list,
        !           556:        no_area_import_list_cmd,
        !           557:        "no area A.B.C.D import-list NAME",
        !           558:        "OSPFv6 area parameters\n"
        !           559:        "OSPFv6 area ID in IP address format\n"
        !           560:        "Unset the filter for networks announced to other areas\n"
        !           561:        "NAme of the access-list\n")
        !           562: {
        !           563:   struct ospf6_area *area;
        !           564: 
        !           565:   OSPF6_CMD_AREA_GET(argv[0], area);
        !           566: 
        !           567:   IMPORT_LIST (area) = 0;
        !           568: 
        !           569:   if (IMPORT_NAME (area))
        !           570:     free (IMPORT_NAME (area));
        !           571: 
        !           572:   IMPORT_NAME (area) = NULL;
        !           573:   ospf6_abr_reimport (area);
        !           574: 
        !           575:   return CMD_SUCCESS;
        !           576: }
        !           577: 
        !           578: DEFUN (area_export_list,
        !           579:        area_export_list_cmd,
        !           580:        "area A.B.C.D export-list NAME",
        !           581:        "OSPFv6 area parameters\n"
        !           582:        "OSPFv6 area ID in IP address format\n"
        !           583:        "Set the filter for networks announced to other areas\n"
        !           584:        "Name of the acess-list\n")
        !           585: {
        !           586:   struct ospf6_area *area;
        !           587:   struct access_list *list;
        !           588: 
        !           589:   OSPF6_CMD_AREA_GET(argv[0], area);
        !           590: 
        !           591:   list = access_list_lookup (AFI_IP6, argv[1]);
        !           592: 
        !           593:   EXPORT_LIST (area) = list;
        !           594: 
        !           595:   if (EXPORT_NAME (area))
        !           596:     free (EXPORT_NAME (area));
        !           597: 
        !           598:   EXPORT_NAME (area) = strdup (argv[1]);
        !           599:   ospf6_abr_enable_area (area);
        !           600: 
        !           601:   return CMD_SUCCESS; 
        !           602: }
        !           603: 
        !           604: DEFUN (no_area_export_list,
        !           605:        no_area_export_list_cmd,
        !           606:        "no area A.B.C.D export-list NAME",
        !           607:        "OSPFv6 area parameters\n"
        !           608:        "OSPFv6 area ID in IP address format\n"
        !           609:        "Unset the filter for networks announced to other areas\n"
        !           610:        "Name of the access-list\n")
        !           611: {
        !           612:   struct ospf6_area *area;
        !           613: 
        !           614:   OSPF6_CMD_AREA_GET(argv[0], area);
        !           615: 
        !           616:   EXPORT_LIST (area) = 0;
        !           617: 
        !           618:   if (EXPORT_NAME (area))
        !           619:     free (EXPORT_NAME (area));
        !           620: 
        !           621:   EXPORT_NAME (area) = NULL;
        !           622:   ospf6_abr_enable_area (area);
        !           623: 
        !           624:   return CMD_SUCCESS;
        !           625: }
        !           626: 
        !           627: DEFUN (show_ipv6_ospf6_spf_tree,
        !           628:        show_ipv6_ospf6_spf_tree_cmd,
        !           629:        "show ipv6 ospf6 spf tree",
        !           630:        SHOW_STR
        !           631:        IP6_STR
        !           632:        OSPF6_STR
        !           633:        "Shortest Path First caculation\n"
        !           634:        "Show SPF tree\n")
        !           635: {
        !           636:   struct listnode *node;
        !           637:   struct ospf6_area *oa;
        !           638:   struct ospf6_vertex *root;
        !           639:   struct ospf6_route *route;
        !           640:   struct prefix prefix;
        !           641: 
        !           642:   ospf6_linkstate_prefix (ospf6->router_id, htonl (0), &prefix);
        !           643: 
        !           644:   for (ALL_LIST_ELEMENTS_RO (ospf6->area_list, node, oa))
        !           645:     {
        !           646:       route = ospf6_route_lookup (&prefix, oa->spf_table);
        !           647:       if (route == NULL)
        !           648:         {
        !           649:           vty_out (vty, "LS entry for root not found in area %s%s",
        !           650:                    oa->name, VNL);
        !           651:           continue;
        !           652:         }
        !           653:       root = (struct ospf6_vertex *) route->route_option;
        !           654:       ospf6_spf_display_subtree (vty, "", 0, root);
        !           655:     }
        !           656: 
        !           657:   return CMD_SUCCESS;
        !           658: }
        !           659: 
        !           660: DEFUN (show_ipv6_ospf6_area_spf_tree,
        !           661:        show_ipv6_ospf6_area_spf_tree_cmd,
        !           662:        "show ipv6 ospf6 area A.B.C.D spf tree",
        !           663:        SHOW_STR
        !           664:        IP6_STR
        !           665:        OSPF6_STR
        !           666:        OSPF6_AREA_STR
        !           667:        OSPF6_AREA_ID_STR
        !           668:        "Shortest Path First caculation\n"
        !           669:        "Show SPF tree\n")
        !           670: {
        !           671:   u_int32_t area_id;
        !           672:   struct ospf6_area *oa;
        !           673:   struct ospf6_vertex *root;
        !           674:   struct ospf6_route *route;
        !           675:   struct prefix prefix;
        !           676: 
        !           677:   ospf6_linkstate_prefix (ospf6->router_id, htonl (0), &prefix);
        !           678: 
        !           679:   if (inet_pton (AF_INET, argv[0], &area_id) != 1)
        !           680:     {
        !           681:       vty_out (vty, "Malformed Area-ID: %s%s", argv[0], VNL);
        !           682:       return CMD_SUCCESS;
        !           683:     }
        !           684:   oa = ospf6_area_lookup (area_id, ospf6);
        !           685:   if (oa == NULL)
        !           686:     {
        !           687:       vty_out (vty, "No such Area: %s%s", argv[0], VNL);
        !           688:       return CMD_SUCCESS;
        !           689:     }
        !           690: 
        !           691:   route = ospf6_route_lookup (&prefix, oa->spf_table);
        !           692:   if (route == NULL)
        !           693:     {
        !           694:       vty_out (vty, "LS entry for root not found in area %s%s",
        !           695:                oa->name, VNL);
        !           696:       return CMD_SUCCESS;
        !           697:     }
        !           698:   root = (struct ospf6_vertex *) route->route_option;
        !           699:   ospf6_spf_display_subtree (vty, "", 0, root);
        !           700: 
        !           701:   return CMD_SUCCESS;
        !           702: }
        !           703: 
        !           704: DEFUN (show_ipv6_ospf6_simulate_spf_tree_root,
        !           705:        show_ipv6_ospf6_simulate_spf_tree_root_cmd,
        !           706:        "show ipv6 ospf6 simulate spf-tree A.B.C.D area A.B.C.D",
        !           707:        SHOW_STR
        !           708:        IP6_STR
        !           709:        OSPF6_STR
        !           710:        "Shortest Path First caculation\n"
        !           711:        "Show SPF tree\n"
        !           712:        "Specify root's router-id to calculate another router's SPF tree\n")
        !           713: {
        !           714:   u_int32_t area_id;
        !           715:   struct ospf6_area *oa;
        !           716:   struct ospf6_vertex *root;
        !           717:   struct ospf6_route *route;
        !           718:   struct prefix prefix;
        !           719:   u_int32_t router_id;
        !           720:   struct ospf6_route_table *spf_table;
        !           721:   unsigned char tmp_debug_ospf6_spf = 0;
        !           722: 
        !           723:   inet_pton (AF_INET, argv[0], &router_id);
        !           724:   ospf6_linkstate_prefix (router_id, htonl (0), &prefix);
        !           725: 
        !           726:   if (inet_pton (AF_INET, argv[1], &area_id) != 1)
        !           727:     {
        !           728:       vty_out (vty, "Malformed Area-ID: %s%s", argv[1], VNL);
        !           729:       return CMD_SUCCESS;
        !           730:     }
        !           731:   oa = ospf6_area_lookup (area_id, ospf6);
        !           732:   if (oa == NULL)
        !           733:     {
        !           734:       vty_out (vty, "No such Area: %s%s", argv[1], VNL);
        !           735:       return CMD_SUCCESS;
        !           736:     }
        !           737: 
        !           738:   tmp_debug_ospf6_spf = conf_debug_ospf6_spf;
        !           739:   conf_debug_ospf6_spf = 0;
        !           740: 
        !           741:   spf_table = OSPF6_ROUTE_TABLE_CREATE (NONE, SPF_RESULTS);
        !           742:   ospf6_spf_calculation (router_id, spf_table, oa);
        !           743: 
        !           744:   conf_debug_ospf6_spf = tmp_debug_ospf6_spf;
        !           745: 
        !           746:   route = ospf6_route_lookup (&prefix, spf_table);
        !           747:   if (route == NULL)
        !           748:     {
        !           749:       ospf6_spf_table_finish (spf_table);
        !           750:       ospf6_route_table_delete (spf_table);
        !           751:       return CMD_SUCCESS;
        !           752:     }
        !           753:   root = (struct ospf6_vertex *) route->route_option;
        !           754:   ospf6_spf_display_subtree (vty, "", 0, root);
        !           755: 
        !           756:   ospf6_spf_table_finish (spf_table);
        !           757:   ospf6_route_table_delete (spf_table);
        !           758: 
        !           759:   return CMD_SUCCESS;
        !           760: }
        !           761: 
        !           762: void
        !           763: ospf6_area_init (void)
        !           764: {
        !           765:   install_element (VIEW_NODE, &show_ipv6_ospf6_spf_tree_cmd);
        !           766:   install_element (VIEW_NODE, &show_ipv6_ospf6_area_spf_tree_cmd);
        !           767:   install_element (VIEW_NODE, &show_ipv6_ospf6_simulate_spf_tree_root_cmd);
        !           768: 
        !           769:   install_element (ENABLE_NODE, &show_ipv6_ospf6_spf_tree_cmd);
        !           770:   install_element (ENABLE_NODE, &show_ipv6_ospf6_area_spf_tree_cmd);
        !           771:   install_element (ENABLE_NODE, &show_ipv6_ospf6_simulate_spf_tree_root_cmd);
        !           772: 
        !           773:   install_element (OSPF6_NODE, &area_range_cmd);
        !           774:   install_element (OSPF6_NODE, &area_range_advertise_cmd);
        !           775:   install_element (OSPF6_NODE, &no_area_range_cmd);
        !           776: 
        !           777:   install_element (OSPF6_NODE, &area_import_list_cmd);
        !           778:   install_element (OSPF6_NODE, &no_area_import_list_cmd);
        !           779:   install_element (OSPF6_NODE, &area_export_list_cmd);
        !           780:   install_element (OSPF6_NODE, &no_area_export_list_cmd);
        !           781: 
        !           782:   install_element (OSPF6_NODE, &area_filter_list_cmd);
        !           783:   install_element (OSPF6_NODE, &no_area_filter_list_cmd);
        !           784: 
        !           785: }
        !           786: 
        !           787: 

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