void
isis_event_system_type_change (struct isis_area *area, int newtype)
{
struct listnode *node;
struct isis_circuit *circuit;
Log(LOG_DEBUG, "DEBUG (default/core/ISIS ): ISIS-Evt (%s) system type change %s -> %s\n", area->area_tag,
circuit_t2string (area->is_type), circuit_t2string (newtype));
if (area->is_type == newtype)
return; /* No change */
switch (area->is_type)
{
case IS_LEVEL_1:
if (area->lspdb[1] == NULL)
area->lspdb[1] = lsp_db_init ();
lsp_l2_generate (area);
break;
case IS_LEVEL_1_AND_2:
if (newtype == IS_LEVEL_1)
{
lsp_db_destroy (area->lspdb[1]);
}
else
{
lsp_db_destroy (area->lspdb[0]);
}
break;
case IS_LEVEL_2:
if (area->lspdb[0] == NULL)
area->lspdb[0] = lsp_db_init ();
lsp_l1_generate (area);
break;
default:
break;
}
area->is_type = newtype;
for (ALL_LIST_ELEMENTS_RO (area->circuit_list, node, circuit))
isis_event_circuit_type_change (circuit, newtype);
spftree_area_init (area);
lsp_regenerate_schedule (area);
return;
}
int
area_net_title (struct isis_area *area, const u_char *net_title)
{
struct area_addr *addr;
struct area_addr *addrp;
struct listnode *node;
u_char buff[255];
if (!area)
{
Log(LOG_WARNING, "WARN ( %s/core/ISIS ): Can't find ISIS instance\n", config.name);
return TRUE;
}
/* We check that we are not over the maximal number of addresses */
if (listcount (area->area_addrs) >= isis->max_area_addrs)
{
Log(LOG_WARNING, "WARN ( %s/core/ISIS ): Maximum of area addresses (%d) already reached\n",
config.name, isis->max_area_addrs);
return TRUE;
}
addr = calloc(1, sizeof (struct area_addr));
addr->addr_len = dotformat2buff (buff, net_title);
memcpy (addr->area_addr, buff, addr->addr_len);
if (addr->addr_len < 8 || addr->addr_len > 20)
{
Log(LOG_WARNING, "WARN ( %s/core/ISIS ): area address must be at least 8..20 octets long (%d)\n",
config.name, addr->addr_len);
free(addr);
return TRUE;
}
if (isis->sysid_set == 0)
{
/*
* First area address - get the SystemID for this router
*/
memcpy (isis->sysid, GETSYSID (addr, ISIS_SYS_ID_LEN), ISIS_SYS_ID_LEN);
isis->sysid_set = 1;
Log(LOG_DEBUG, "DEBUG ( %s/core/ISIS ): Router has SystemID %s\n", config.name, sysid_print (isis->sysid));
}
else
{
/*
* Check that the SystemID portions match
*/
if (memcmp (isis->sysid, GETSYSID (addr, ISIS_SYS_ID_LEN),
ISIS_SYS_ID_LEN))
{
Log(LOG_WARNING, "WARN ( %s/core/ISIS ): System ID must not change when defining additional area addresses\n", config.name);
free(addr);
return TRUE;
}
/* now we see that we don't already have this address */
for (ALL_LIST_ELEMENTS_RO (area->area_addrs, node, addrp))
{
if ((addrp->addr_len + ISIS_SYS_ID_LEN + 1) != (addr->addr_len))
continue;
if (!memcmp (addrp->area_addr, addr->area_addr, addr->addr_len))
{
free(addr);
return FALSE; /* silent fail */
}
}
}
/*
* Forget the systemID part of the address
*/
addr->addr_len -= (ISIS_SYS_ID_LEN + 1);
isis_listnode_add (area->area_addrs, addr);
/* Only now we can safely generate our LSPs for this area */
if (listcount (area->area_addrs) > 0)
{
lsp_l1_generate (area);
lsp_l2_generate (area);
}
return FALSE;
}
