static void
ospf6_area_lsdb_hook_remove (struct ospf6_lsa *lsa)
{
switch (ntohs (lsa->header->type))
{
case OSPF6_LSTYPE_ROUTER:
case OSPF6_LSTYPE_NETWORK:
if (IS_OSPF6_DEBUG_EXAMIN_TYPE (lsa->header->type))
{
zlog_debug ("LSA disappearing: %s", lsa->name);
zlog_debug ("Schedule SPF Calculation for %s",
OSPF6_AREA (lsa->lsdb->data)->name);
}
ospf6_spf_schedule (OSPF6_AREA (lsa->lsdb->data));
break;
case OSPF6_LSTYPE_INTRA_PREFIX:
ospf6_intra_prefix_lsa_remove (lsa);
break;
case OSPF6_LSTYPE_INTER_PREFIX:
case OSPF6_LSTYPE_INTER_ROUTER:
ospf6_abr_examin_summary (lsa, (struct ospf6_area *) lsa->lsdb->data);
break;
default:
break;
}
}
void
ospf6_abr_examin_brouter (u_int32_t router_id)
{
struct ospf6_lsa *lsa;
struct ospf6_area *oa;
listnode node;
u_int16_t type;
type = htons (OSPF6_LSTYPE_INTER_ROUTER);
for (node = listhead (ospf6->area_list); node; nextnode (node))
{
oa = OSPF6_AREA (getdata (node));
for (lsa = ospf6_lsdb_type_router_head (type, router_id, oa->lsdb); lsa;
lsa = ospf6_lsdb_type_router_next (type, router_id, lsa))
ospf6_abr_examin_summary (lsa, oa);
}
type = htons (OSPF6_LSTYPE_INTER_PREFIX);
for (node = listhead (ospf6->area_list); node; nextnode (node))
{
oa = OSPF6_AREA (getdata (node));
for (lsa = ospf6_lsdb_type_router_head (type, router_id, oa->lsdb); lsa;
lsa = ospf6_lsdb_type_router_next (type, router_id, lsa))
ospf6_abr_examin_summary (lsa, oa);
}
}
int
ospf6_is_router_abr (struct ospf6 *o)
{
listnode node;
struct ospf6_area *oa;
int area_count = 0;
for (node = listhead (o->area_list); node; nextnode (node))
{
oa = OSPF6_AREA (getdata (node));
if (IS_AREA_ENABLED (oa))
area_count++;
}
if (area_count > 1)
return 1;
return 0;
}
void
ospf6_abr_disable_area (struct ospf6_area *area)
{
struct ospf6_area *oa;
struct ospf6_route *ro;
struct ospf6_lsa *old;
listnode node;
/* Withdraw all summary prefixes previously originated */
for (ro = ospf6_route_head (area->summary_prefix); ro;
ro = ospf6_route_next (ro))
{
old = ospf6_lsdb_lookup (ro->path.origin.type, ro->path.origin.id,
area->ospf6->router_id, area->lsdb);
if (old)
ospf6_lsa_purge (old);
ospf6_route_remove (ro, area->summary_prefix);
}
/* Withdraw all summary router-routes previously originated */
for (ro = ospf6_route_head (area->summary_router); ro;
ro = ospf6_route_next (ro))
{
old = ospf6_lsdb_lookup (ro->path.origin.type, ro->path.origin.id,
area->ospf6->router_id, area->lsdb);
if (old)
ospf6_lsa_purge (old);
ospf6_route_remove (ro, area->summary_router);
}
/* Schedule Router-LSA for each area (ABR status may change) */
for (node = listhead (area->ospf6->area_list); node; nextnode (node))
{
oa = OSPF6_AREA (getdata (node));
/* update B bit for each area */
OSPF6_ROUTER_LSA_SCHEDULE (oa);
}
}
void
ospf6_abr_enable_area (struct ospf6_area *area)
{
struct ospf6_area *oa;
struct ospf6_route *ro;
listnode node;
for (node = listhead (area->ospf6->area_list); node; nextnode (node))
{
oa = OSPF6_AREA (getdata (node));
/* update B bit for each area */
OSPF6_ROUTER_LSA_SCHEDULE (oa);
/* install other area's configured address range */
if (oa != area)
{
for (ro = ospf6_route_head (oa->range_table); ro;
ro = ospf6_route_next (ro))
{
if (CHECK_FLAG (ro->flag, OSPF6_ROUTE_ACTIVE_SUMMARY))
ospf6_abr_originate_summary_to_area (ro, area);
}
}
}
/* install calculated routes to border routers */
for (ro = ospf6_route_head (area->ospf6->brouter_table); ro;
ro = ospf6_route_next (ro))
ospf6_abr_originate_summary_to_area (ro, area);
/* install calculated routes to network (may be rejected by ranges) */
for (ro = ospf6_route_head (area->ospf6->route_table); ro;
ro = ospf6_route_next (ro))
ospf6_abr_originate_summary_to_area (ro, area);
}
static u_char *
ospfv3AreaLsdbEntry (struct variable *v, oid *name, size_t *length,
int exact, size_t *var_len, WriteMethod **write_method)
{
struct ospf6_lsa *lsa = NULL;
struct in_addr area_id;
u_int16_t type;
struct in_addr id;
struct in_addr adv_router;
int len;
oid *offset;
int offsetlen;
char a[16], b[16], c[16];
struct ospf6_area *oa;
struct listnode *node;
memset (&area_id, 0, sizeof (struct in_addr));
type = 0;
memset (&id, 0, sizeof (struct in_addr));
memset (&adv_router, 0, sizeof (struct in_addr));
/* Check OSPFv3 instance. */
if (ospf6 == NULL)
return NULL;
/* Get variable length. */
offset = name + v->namelen;
offsetlen = *length - v->namelen;
#define OSPFV3_AREA_LSDB_ENTRY_EXACT_OFFSET \
(IN_ADDR_SIZE + 1 + IN_ADDR_SIZE + IN_ADDR_SIZE)
if (exact && offsetlen != OSPFV3_AREA_LSDB_ENTRY_EXACT_OFFSET)
return NULL;
/* Parse area-id */
len = (offsetlen < IN_ADDR_SIZE ? offsetlen : IN_ADDR_SIZE);
if (len)
oid2in_addr (offset, len, &area_id);
offset += len;
offsetlen -= len;
/* Parse type */
len = (offsetlen < 1 ? offsetlen : 1);
if (len)
type = htons (*offset);
offset += len;
offsetlen -= len;
/* Parse Router-ID */
len = (offsetlen < IN_ADDR_SIZE ? offsetlen : IN_ADDR_SIZE);
if (len)
oid2in_addr (offset, len, &adv_router);
offset += len;
offsetlen -= len;
/* Parse LS-ID */
len = (offsetlen < IN_ADDR_SIZE ? offsetlen : IN_ADDR_SIZE);
if (len)
oid2in_addr (offset, len, &id);
offset += len;
offsetlen -= len;
ospf6_id2str (area_id.s_addr, a, sizeof (a));
ospf6_id2str (adv_router.s_addr, b, sizeof (b));
ospf6_id2str (id.s_addr, c, sizeof (c));
zlog_debug ("SNMP access by lsdb: area=%s exact=%d length=%lu magic=%d"
" type=%#x adv_router=%s id=%s",
a, exact, (u_long)*length, v->magic, ntohs (type), b, c);
if (exact)
{
oa = ospf6_area_lookup (area_id.s_addr, ospf6);
lsa = ospf6_lsdb_lookup (type, id.s_addr, adv_router.s_addr, oa->lsdb);
}
else
{
for (ALL_LIST_ELEMENTS_RO (ospf6->area_list, node, oa))
{
if (lsa)
continue;
if (ntohl (oa->area_id) < ntohl (area_id.s_addr))
continue;
lsa = ospf6_lsdb_lookup_next (type, id.s_addr, adv_router.s_addr,
oa->lsdb);
if (! lsa)
{
type = 0;
memset (&id, 0, sizeof (struct in_addr));
memset (&adv_router, 0, sizeof (struct in_addr));
}
}
}
if (! lsa)
{
zlog_debug ("SNMP respond: No LSA to return");
return NULL;
}
oa = OSPF6_AREA (lsa->lsdb->data);
zlog_debug ("SNMP respond: area: %s lsa: %s", oa->name, lsa->name);
/* Add Index (AreaId, Type, RouterId, Lsid) */
*length = v->namelen + OSPFV3_AREA_LSDB_ENTRY_EXACT_OFFSET;
offset = name + v->namelen;
oid_copy_addr (offset, (struct in_addr *) &oa->area_id, IN_ADDR_SIZE);
offset += IN_ADDR_SIZE;
*offset = ntohs (lsa->header->type);
offset++;
oid_copy_addr (offset, (struct in_addr *) &lsa->header->adv_router,
IN_ADDR_SIZE);
offset += IN_ADDR_SIZE;
oid_copy_addr (offset, (struct in_addr *) &lsa->header->id, IN_ADDR_SIZE);
offset += IN_ADDR_SIZE;
/* Return the current value of the variable */
switch (v->magic)
{
case OSPFv3AREALSDBAREAID: /* 1 */
area_id.s_addr = OSPF6_AREA (lsa->lsdb->data)->area_id;
return SNMP_IPADDRESS (area_id);
break;
case OSPFv3AREALSDBTYPE: /* 2 */
return SNMP_INTEGER (ntohs (lsa->header->type));
break;
case OSPFv3AREALSDBROUTERID: /* 3 */
adv_router.s_addr = lsa->header->adv_router;
return SNMP_IPADDRESS (adv_router);
break;
case OSPFv3AREALSDBLSID: /* 4 */
id.s_addr = lsa->header->id;
return SNMP_IPADDRESS (id);
break;
case OSPFv3AREALSDBSEQUENCE: /* 5 */
return SNMP_INTEGER (lsa->header->seqnum);
break;
case OSPFv3AREALSDBAGE: /* 6 */
ospf6_lsa_age_current (lsa);
return SNMP_INTEGER (lsa->header->age);
break;
case OSPFv3AREALSDBCHECKSUM: /* 7 */
return SNMP_INTEGER (lsa->header->checksum);
break;
case OSPFv3AREALSDBADVERTISEMENT: /* 8 */
*var_len = ntohs (lsa->header->length);
return (u_char *) lsa->header;
break;
case OSPFv3AREALSDBTYPEKNOWN: /* 9 */
return SNMP_INTEGER (OSPF6_LSA_IS_KNOWN (lsa->header->type) ?
SNMP_TRUE : SNMP_FALSE);
break;
default:
return NULL;
break;
}
return NULL;
}
