ospf6d/ospf6_snmp.c

   1 /* OSPFv3 SNMP support
   2  * Copyright (C) 2004 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 #ifdef HAVE_SNMP
  25
  26 #include <net-snmp/net-snmp-config.h>
  27 #include <net-snmp/net-snmp-includes.h>
  28
  29 #include "log.h"
  30 #include "vty.h"
  31 #include "linklist.h"
  32 #include "smux.h"
  33
  34 #include "ospf6_proto.h"
  35 #include "ospf6_lsa.h"
  36 #include "ospf6_lsdb.h"
  37 #include "ospf6_route.h"
  38 #include "ospf6_top.h"
  39 #include "ospf6_area.h"
  40 #include "ospf6_interface.h"
  41 #include "ospf6_message.h"
  42 #include "ospf6_neighbor.h"
  43 #include "ospf6d.h"
  44 #include "ospf6_snmp.h"
  45
  46 /* OSPFv3-MIB */
  47 #define OSPFv3MIB 1,3,6,1,3,102
  48
  49 /* OSPFv3 MIB General Group values. */
  50 #define OSPFv3ROUTERID                   1
  51 #define OSPFv3ADMINSTAT                  2
  52 #define OSPFv3VERSIONNUMBER              3
  53 #define OSPFv3AREABDRRTRSTATUS           4
  54 #define OSPFv3ASBDRRTRSTATUS             5
  55 #define OSPFv3ASSCOPELSACOUNT            6
  56 #define OSPFv3ASSCOPELSACHECKSUMSUM      7
  57 #define OSPFv3ORIGINATENEWLSAS           8
  58 #define OSPFv3RXNEWLSAS                  9
  59 #define OSPFv3EXTLSACOUNT               10
  60 #define OSPFv3EXTAREALSDBLIMIT          11
  61 #define OSPFv3MULTICASTEXTENSIONS       12
  62 #define OSPFv3EXITOVERFLOWINTERVAL      13
  63 #define OSPFv3DEMANDEXTENSIONS          14
  64 #define OSPFv3TRAFFICENGINEERINGSUPPORT 15
  65 #define OSPFv3REFERENCEBANDWIDTH        16
  66 #define OSPFv3RESTARTSUPPORT            17
  67 #define OSPFv3RESTARTINTERVAL           18
  68 #define OSPFv3RESTARTSTATUS             19
  69 #define OSPFv3RESTARTAGE                20
  70 #define OSPFv3RESTARTEXITREASON         21
  71
  72 /* OSPFv3 MIB Area Table values. */
  73 #define OSPFv3AREAID                     1
  74 #define OSPFv3IMPORTASEXTERN             2
  75 #define OSPFv3AREASPFRUNS                3
  76 #define OSPFv3AREABDRRTRCOUNT            4
  77 #define OSPFv3AREAASBDRRTRCOUNT          5
  78 #define OSPFv3AREASCOPELSACOUNT          6
  79 #define OSPFv3AREASCOPELSACKSUMSUM       7
  80 #define OSPFv3AREASUMMARY                8
  81 #define OSPFv3AREASTATUS                 9
  82 #define OSPFv3STUBMETRIC                10
  83 #define OSPFv3AREANSSATRANSLATORROLE    11
  84 #define OSPFv3AREANSSATRANSLATORSTATE   12
  85 #define OSPFv3AREANSSATRANSLATORSTABILITYINTERVAL    13
  86 #define OSPFv3AREANSSATRANSLATOREVENTS  14
  87 #define OSPFv3AREASTUBMETRICTYPE        15
  88
  89 /* OSPFv3 MIB Area Lsdb Table values. */
  90 #define OSPFv3AREALSDBAREAID             1
  91 #define OSPFv3AREALSDBTYPE               2
  92 #define OSPFv3AREALSDBROUTERID           3
  93 #define OSPFv3AREALSDBLSID               4
  94 #define OSPFv3AREALSDBSEQUENCE           5
  95 #define OSPFv3AREALSDBAGE                6
  96 #define OSPFv3AREALSDBCHECKSUM           7
  97 #define OSPFv3AREALSDBADVERTISEMENT      8
  98 #define OSPFv3AREALSDBTYPEKNOWN          9
  99
 100 /* SYNTAX Status from OSPF-MIB. */
 101 #define OSPF_STATUS_ENABLED  1
 102 #define OSPF_STATUS_DISABLED 2
 103
 104 /* SNMP value hack. */
 105 #define COUNTER     ASN_COUNTER
 106 #define INTEGER     ASN_INTEGER
 107 #define GAUGE       ASN_GAUGE
 108 #define TIMETICKS   ASN_TIMETICKS
 109 #define IPADDRESS   ASN_IPADDRESS
 110 #define STRING      ASN_OCTET_STR
 111
 112 /* For return values e.g. SNMP_INTEGER macro */
 113 SNMP_LOCAL_VARIABLES
 114
 115 static struct in_addr tmp;
 116 #define INT32_INADDR(x) \
 117   (tmp.s_addr = (x), tmp)
 118
 119 /* OSPFv3-MIB instances. */
 120 oid ospfv3_oid [] = { OSPFv3MIB };
 121
 122 /* empty ID 0.0.0.0 e.g. empty router-id */
 123 static struct in_addr ospf6_empty_id = {0};
 124
 125 /* Hook functions. */
 126 static u_char *ospfv3GeneralGroup (struct variable *, oid *, size_t *,
 127                                    int, size_t *, WriteMethod **);
 128 static u_char *ospfv3AreaEntry (struct variable *, oid *, size_t *,
 129                                 int, size_t *, WriteMethod **);
 130 static u_char *ospfv3AreaLsdbEntry (struct variable *, oid *, size_t *,
 131                                     int, size_t *, WriteMethod **);
 132
 133 struct variable ospfv3_variables[] =
 134 {
 135   /* OSPF general variables */
 136   {OSPFv3ROUTERID,              IPADDRESS, RWRITE, ospfv3GeneralGroup,
 137    3, {1, 1, 1}},
 138   {OSPFv3ADMINSTAT,             INTEGER,   RWRITE, ospfv3GeneralGroup,
 139    3, {1, 1, 2}},
 140   {OSPFv3VERSIONNUMBER,         INTEGER,   RONLY,  ospfv3GeneralGroup,
 141    3, {1, 1, 3}},
 142   {OSPFv3AREABDRRTRSTATUS,      INTEGER,   RONLY,  ospfv3GeneralGroup,
 143    3, {1, 1, 4}},
 144   {OSPFv3ASBDRRTRSTATUS,        INTEGER,   RWRITE, ospfv3GeneralGroup,
 145    3, {1, 1, 5}},
 146   {OSPFv3ASSCOPELSACOUNT,       GAUGE,     RONLY,  ospfv3GeneralGroup,
 147    3, {1, 1, 6}},
 148   {OSPFv3ASSCOPELSACHECKSUMSUM, INTEGER,   RONLY,  ospfv3GeneralGroup,
 149    3, {1, 1, 7}},
 150   {OSPFv3ORIGINATENEWLSAS,      COUNTER,   RONLY,  ospfv3GeneralGroup,
 151    3, {1, 1, 8}},
 152   {OSPFv3RXNEWLSAS,             COUNTER,   RONLY,  ospfv3GeneralGroup,
 153    3, {1, 1, 9}},
 154   {OSPFv3EXTLSACOUNT,           GAUGE,     RONLY,  ospfv3GeneralGroup,
 155    3, {1, 1, 10}},
 156   {OSPFv3EXTAREALSDBLIMIT,      INTEGER,   RWRITE, ospfv3GeneralGroup,
 157    3, {1, 1, 11}},
 158   {OSPFv3MULTICASTEXTENSIONS,   INTEGER,   RWRITE, ospfv3GeneralGroup,
 159    3, {1, 1, 12}},
 160   {OSPFv3EXITOVERFLOWINTERVAL,  INTEGER,   RWRITE, ospfv3GeneralGroup,
 161    3, {1, 1, 13}},
 162   {OSPFv3DEMANDEXTENSIONS,      INTEGER,   RWRITE, ospfv3GeneralGroup,
 163    3, {1, 1, 14}},
 164   {OSPFv3TRAFFICENGINEERINGSUPPORT, INTEGER, RWRITE, ospfv3GeneralGroup,
 165    3, {1, 1, 15}},
 166   {OSPFv3REFERENCEBANDWIDTH,    INTEGER, RWRITE, ospfv3GeneralGroup,
 167    3, {1, 1, 16}},
 168   {OSPFv3RESTARTSUPPORT,        INTEGER, RWRITE, ospfv3GeneralGroup,
 169    3, {1, 1, 17}},
 170   {OSPFv3RESTARTINTERVAL,       INTEGER, RWRITE, ospfv3GeneralGroup,
 171    3, {1, 1, 18}},
 172   {OSPFv3RESTARTSTATUS,         INTEGER, RONLY,  ospfv3GeneralGroup,
 173    3, {1, 1, 19}},
 174   {OSPFv3RESTARTAGE,            INTEGER, RONLY,  ospfv3GeneralGroup,
 175    3, {1, 1, 20}},
 176   {OSPFv3RESTARTEXITREASON,     INTEGER, RONLY,  ospfv3GeneralGroup,
 177    3, {1, 1, 21}},
 178
 179   /* OSPFv3 Area Data Structure */
 180   {OSPFv3AREAID,                IPADDRESS, RONLY,  ospfv3AreaEntry,
 181    4, {1, 2, 1, 1}},
 182   {OSPFv3IMPORTASEXTERN,        INTEGER,   RWRITE, ospfv3AreaEntry,
 183    4, {1, 2, 1, 2}},
 184   {OSPFv3AREASPFRUNS,           COUNTER,   RONLY,  ospfv3AreaEntry,
 185    4, {1, 2, 1, 3}},
 186   {OSPFv3AREABDRRTRCOUNT,       GAUGE,     RONLY,  ospfv3AreaEntry,
 187    4, {1, 2, 1, 4}},
 188   {OSPFv3AREAASBDRRTRCOUNT,     GAUGE,     RONLY,  ospfv3AreaEntry,
 189    4, {1, 2, 1, 5}},
 190   {OSPFv3AREASCOPELSACOUNT,     GAUGE,     RONLY,  ospfv3AreaEntry,
 191    4, {1, 2, 1, 6}},
 192   {OSPFv3AREASCOPELSACKSUMSUM,  INTEGER,   RONLY,  ospfv3AreaEntry,
 193    4, {1, 2, 1, 7}},
 194   {OSPFv3AREASUMMARY,           INTEGER,   RWRITE, ospfv3AreaEntry,
 195    4, {1, 2, 1, 8}},
 196   {OSPFv3AREASTATUS,            INTEGER,   RWRITE, ospfv3AreaEntry,
 197    4, {1, 2, 1, 9}},
 198   {OSPFv3STUBMETRIC,            INTEGER,   RWRITE, ospfv3AreaEntry,
 199    4, {1, 2, 1, 10}},
 200   {OSPFv3AREANSSATRANSLATORROLE, INTEGER,  RWRITE, ospfv3AreaEntry,
 201    4, {1, 2, 1, 11}},
 202   {OSPFv3AREANSSATRANSLATORSTATE, INTEGER, RONLY,  ospfv3AreaEntry,
 203    4, {1, 2, 1, 12}},
 204   {OSPFv3AREANSSATRANSLATORSTABILITYINTERVAL, INTEGER, RWRITE, ospfv3AreaEntry,
 205    4, {1, 2, 1, 13}},
 206   {OSPFv3AREANSSATRANSLATOREVENTS, COUNTER, RONLY, ospfv3AreaEntry,
 207    4, {1, 2, 1, 14}},
 208   {OSPFv3AREASTUBMETRICTYPE,    INTEGER, RWRITE, ospfv3AreaEntry,
 209    4, {1, 2, 1, 15}},
 210
 211   {OSPFv3AREALSDBAREAID,        IPADDRESS, RONLY,  ospfv3AreaLsdbEntry,
 212    4, {1, 4, 1, 1}},
 213   {OSPFv3AREALSDBTYPE,          GAUGE,     RONLY,  ospfv3AreaLsdbEntry,
 214    4, {1, 4, 1, 2}},
 215   {OSPFv3AREALSDBROUTERID,      IPADDRESS, RONLY,  ospfv3AreaLsdbEntry,
 216    4, {1, 4, 1, 3}},
 217   {OSPFv3AREALSDBLSID,          IPADDRESS, RONLY,  ospfv3AreaLsdbEntry,
 218    4, {1, 4, 1, 4}},
 219   {OSPFv3AREALSDBSEQUENCE,      INTEGER,   RONLY,  ospfv3AreaLsdbEntry,
 220    4, {1, 4, 1, 5}},
 221   {OSPFv3AREALSDBAGE,           INTEGER,   RONLY,  ospfv3AreaLsdbEntry,
 222    4, {1, 4, 1, 6}},
 223   {OSPFv3AREALSDBCHECKSUM,      INTEGER,   RONLY,  ospfv3AreaLsdbEntry,
 224    4, {1, 4, 1, 7}},
 225   {OSPFv3AREALSDBADVERTISEMENT, STRING,    RONLY,  ospfv3AreaLsdbEntry,
 226    4, {1, 4, 1, 8}},
 227   {OSPFv3AREALSDBTYPEKNOWN,     INTEGER,   RONLY,  ospfv3AreaLsdbEntry,
 228    4, {1, 4, 1, 9}},
 229
 230 };
 231
 232 static u_char *
 233 ospfv3GeneralGroup (struct variable *v, oid *name, size_t *length,
 234                     int exact, size_t *var_len, WriteMethod **write_method)
 235 {
 236   /* Check whether the instance identifier is valid */
 237   if (smux_header_generic (v, name, length, exact, var_len, write_method)
 238       == MATCH_FAILED)
 239     return NULL;
 240
 241   /* Return the current value of the variable */
 242   switch (v->magic)
 243     {
 244     case OSPFv3ROUTERID:                  /* 1*/
 245       /* Router-ID of this OSPF instance. */
 246       if (ospf6)
 247         return SNMP_IPADDRESS (INT32_INADDR (ospf6->router_id));
 248       else
 249         return SNMP_IPADDRESS (ospf6_empty_id);
 250       break;
 251     case OSPFv3ADMINSTAT:                 /* 2*/
 252       break;
 253     case OSPFv3VERSIONNUMBER:             /* 3*/
 254       break;
 255     case OSPFv3AREABDRRTRSTATUS:          /* 4*/
 256       break;
 257     case OSPFv3ASBDRRTRSTATUS:            /* 5*/
 258       break;
 259     case OSPFv3ASSCOPELSACOUNT:           /* 6*/
 260       break;
 261     case OSPFv3ASSCOPELSACHECKSUMSUM:     /* 7*/
 262       break;
 263     case OSPFv3ORIGINATENEWLSAS:          /* 8*/
 264       break;
 265     case OSPFv3RXNEWLSAS:                 /* 9*/
 266       break;
 267     case OSPFv3EXTLSACOUNT:               /*10*/
 268       break;
 269     case OSPFv3EXTAREALSDBLIMIT:          /*11*/
 270       break;
 271     case OSPFv3MULTICASTEXTENSIONS:       /*12*/
 272       break;
 273     case OSPFv3EXITOVERFLOWINTERVAL:      /*13*/
 274       break;
 275     case OSPFv3DEMANDEXTENSIONS:          /*14*/
 276       break;
 277     case OSPFv3TRAFFICENGINEERINGSUPPORT: /*15*/
 278       break;
 279     case OSPFv3REFERENCEBANDWIDTH:        /*16*/
 280       break;
 281     case OSPFv3RESTARTSUPPORT:            /*17*/
 282       break;
 283     case OSPFv3RESTARTINTERVAL:           /*18*/
 284       break;
 285     case OSPFv3RESTARTSTATUS:             /*19*/
 286       break;
 287     case OSPFv3RESTARTAGE:                /*20*/
 288       break;
 289     case OSPFv3RESTARTEXITREASON:         /*21*/
 290       break;
 291     default:
 292       return NULL;
 293     }
 294   return NULL;
 295 }
 296
 297 static u_char *
 298 ospfv3AreaEntry (struct variable *v, oid *name, size_t *length,
 299                  int exact, size_t *var_len, WriteMethod **write_method)
 300 {
 301   struct ospf6_area *oa, *area = NULL;
 302   u_int32_t area_id = 0;
 303   struct listnode *node;
 304   unsigned int len;
 305
 306   if (ospf6 == NULL)
 307     return NULL;
 308
 309   if (smux_header_table(v, name, length, exact, var_len, write_method)
 310       == MATCH_FAILED)
 311     return NULL;
 312
 313   len = *length - v->namelen;
 314   len = (len >= sizeof (u_int32_t) ? sizeof (u_int32_t) : 0);
 315   if (exact && len != sizeof (u_int32_t))
 316     return NULL;
 317   if (len)
 318     oid2in_addr (name + v->namelen, len, (struct in_addr *) &area_id);
 319
 320   zlog_debug ("SNMP access by area: %s, exact=%d len=%d length=%lu",
 321               inet_ntoa (* (struct in_addr *) &area_id),
 322               exact, len, (u_long)*length);
 323
 324   for (ALL_LIST_ELEMENTS_RO (ospf6->area_list, node, oa))
 325     {
 326       if (area == NULL)
 327         {
 328           if (len == 0) /* return first area entry */
 329             area = oa;
 330           else if (exact && ntohl (oa->area_id) == ntohl (area_id))
 331             area = oa;
 332           else if (ntohl (oa->area_id) > ntohl (area_id))
 333             area = oa;
 334         }
 335     }
 336
 337   if (area == NULL)
 338     return NULL;
 339
 340   *length = v->namelen + sizeof (u_int32_t);
 341   oid_copy_addr (name + v->namelen, (struct in_addr *) &area->area_id,
 342                  sizeof (u_int32_t));
 343
 344   zlog_debug ("SNMP found area: %s, exact=%d len=%d length=%lu",
 345               inet_ntoa (* (struct in_addr *) &area->area_id),
 346               exact, len, (u_long)*length);
 347
 348   switch (v->magic)
 349     {
 350     case OSPFv3AREAID:                   /* 1*/
 351       return SNMP_IPADDRESS (INT32_INADDR (area->area_id));
 352       break;
 353     case OSPFv3IMPORTASEXTERN:           /* 2*/
 354       return SNMP_INTEGER (ospf6->external_table->count);
 355       break;
 356     default:
 357       return NULL;
 358       break;
 359     }
 360   return NULL;
 361 }
 362
 363 static u_char *
 364 ospfv3AreaLsdbEntry (struct variable *v, oid *name, size_t *length,
 365                      int exact, size_t *var_len, WriteMethod **write_method)
 366 {
 367   struct ospf6_lsa *lsa = NULL;
 368   struct in_addr area_id;
 369   u_int16_t type;
 370   struct in_addr id;
 371   struct in_addr adv_router;
 372   int len;
 373   oid *offset;
 374   int offsetlen;
 375   char a[16], b[16], c[16];
 376   struct ospf6_area *oa;
 377   struct listnode *node;
 378
 379   if (smux_header_table(v, name, length, exact, var_len, write_method)
 380       == MATCH_FAILED)
 381     return NULL;
 382
 383   memset (&area_id, 0, sizeof (struct in_addr));
 384   type = 0;
 385   memset (&id, 0, sizeof (struct in_addr));
 386   memset (&adv_router, 0, sizeof (struct in_addr));
 387
 388   /* Check OSPFv3 instance. */
 389   if (ospf6 == NULL)
 390     return NULL;
 391
 392   /* Get variable length. */
 393   offset = name + v->namelen;
 394   offsetlen = *length - v->namelen;
 395
 396 #define OSPFV3_AREA_LSDB_ENTRY_EXACT_OFFSET \
 397   (IN_ADDR_SIZE + 1 + IN_ADDR_SIZE + IN_ADDR_SIZE)
 398
 399   if (exact && offsetlen != OSPFV3_AREA_LSDB_ENTRY_EXACT_OFFSET)
 400     return NULL;
 401
 402   /* Parse area-id */
 403   len = (offsetlen < IN_ADDR_SIZE ? offsetlen : IN_ADDR_SIZE);
 404   if (len)
 405     oid2in_addr (offset, len, &area_id);
 406   offset += len;
 407   offsetlen -= len;
 408
 409   /* Parse type */
 410   len = (offsetlen < 1 ? offsetlen : 1);
 411   if (len)
 412     type = htons (*offset);
 413   offset += len;
 414   offsetlen -= len;
 415
 416   /* Parse Router-ID */
 417   len = (offsetlen < IN_ADDR_SIZE ? offsetlen : IN_ADDR_SIZE);
 418   if (len)
 419     oid2in_addr (offset, len, &adv_router);
 420   offset += len;
 421   offsetlen -= len;
 422
 423   /* Parse LS-ID */
 424   len = (offsetlen < IN_ADDR_SIZE ? offsetlen : IN_ADDR_SIZE);
 425   if (len)
 426     oid2in_addr (offset, len, &id);
 427   offset += len;
 428   offsetlen -= len;
 429
 430   inet_ntop (AF_INET, &area_id, a, sizeof (a));
 431   inet_ntop (AF_INET, &adv_router, b, sizeof (b));
 432   inet_ntop (AF_INET, &id, c, sizeof (c));
 433   zlog_debug ("SNMP access by lsdb: area=%s exact=%d length=%lu magic=%d"
 434               " type=%#x adv_router=%s id=%s",
 435               a, exact, (u_long)*length, v->magic, ntohs (type), b, c);
 436
 437   if (exact)
 438     {
 439       oa = ospf6_area_lookup (area_id.s_addr, ospf6);
 440       lsa = ospf6_lsdb_lookup (type, id.s_addr, adv_router.s_addr, oa->lsdb);
 441     }
 442   else
 443     {
 444       for (ALL_LIST_ELEMENTS_RO (ospf6->area_list, node, oa))
 445         {
 446           if (lsa)
 447             continue;
 448           if (ntohl (oa->area_id) < ntohl (area_id.s_addr))
 449             continue;
 450
 451           lsa = ospf6_lsdb_lookup_next (type, id.s_addr, adv_router.s_addr,
 452                                         oa->lsdb);
 453           if (! lsa)
 454             {
 455               type = 0;
 456               memset (&id, 0, sizeof (struct in_addr));
 457               memset (&adv_router, 0, sizeof (struct in_addr));
 458             }
 459         }
 460     }
 461
 462   if (! lsa)
 463     {
 464       zlog_debug ("SNMP respond: No LSA to return");
 465       return NULL;
 466     }
 467   oa = OSPF6_AREA (lsa->lsdb->data);
 468
 469   zlog_debug ("SNMP respond: area: %s lsa: %s", oa->name, lsa->name);
 470
 471   /* Add Index (AreaId, Type, RouterId, Lsid) */
 472   *length = v->namelen + OSPFV3_AREA_LSDB_ENTRY_EXACT_OFFSET;
 473   offset = name + v->namelen;
 474   oid_copy_addr (offset, (struct in_addr *) &oa->area_id, IN_ADDR_SIZE);
 475   offset += IN_ADDR_SIZE;
 476   *offset = ntohs (lsa->header->type);
 477   offset++;
 478   oid_copy_addr (offset, (struct in_addr *) &lsa->header->adv_router,
 479                  IN_ADDR_SIZE);
 480   offset += IN_ADDR_SIZE;
 481   oid_copy_addr (offset, (struct in_addr *) &lsa->header->id, IN_ADDR_SIZE);
 482   offset += IN_ADDR_SIZE;
 483
 484   /* Return the current value of the variable */
 485   switch (v->magic)
 486     {
 487     case OSPFv3AREALSDBAREAID:        /* 1 */
 488       area_id.s_addr = OSPF6_AREA (lsa->lsdb->data)->area_id;
 489       return SNMP_IPADDRESS (area_id);
 490       break;
 491     case OSPFv3AREALSDBTYPE:          /* 2 */
 492       return SNMP_INTEGER (ntohs (lsa->header->type));
 493       break;
 494     case OSPFv3AREALSDBROUTERID:      /* 3 */
 495       adv_router.s_addr = lsa->header->adv_router;
 496       return SNMP_IPADDRESS (adv_router);
 497       break;
 498     case OSPFv3AREALSDBLSID:          /* 4 */
 499       id.s_addr = lsa->header->id;
 500       return SNMP_IPADDRESS (id);
 501       break;
 502     case OSPFv3AREALSDBSEQUENCE:      /* 5 */
 503       return SNMP_INTEGER (lsa->header->seqnum);
 504       break;
 505     case OSPFv3AREALSDBAGE:           /* 6 */
 506       ospf6_lsa_age_current (lsa);
 507       return SNMP_INTEGER (lsa->header->age);
 508       break;
 509     case OSPFv3AREALSDBCHECKSUM:      /* 7 */
 510       return SNMP_INTEGER (lsa->header->checksum);
 511       break;
 512     case OSPFv3AREALSDBADVERTISEMENT: /* 8 */
 513       *var_len = ntohs (lsa->header->length);
 514       return (u_char *) lsa->header;
 515       break;
 516     case OSPFv3AREALSDBTYPEKNOWN:     /* 9 */
 517       return SNMP_INTEGER (OSPF6_LSA_IS_KNOWN (lsa->header->type) ?
 518                            SNMP_TRUE : SNMP_FALSE);
 519       break;
 520     default:
 521       return NULL;
 522       break;
 523     }
 524   return NULL;
 525 }
 526
 527
 528 /* Register OSPFv3-MIB. */
 529 void
 530 ospf6_snmp_init (struct thread_master *master)
 531 {
 532   smux_init (master);
 533   REGISTER_MIB ("OSPFv3MIB", ospfv3_variables, variable, ospfv3_oid);
 534 }
 535
 536 #endif /* HAVE_SNMP */
 537