void
ospf_vl_up_check (struct ospf_area *area, struct in_addr rid,
struct vertex *v)
{
struct ospf *ospf = area->ospf;
struct listnode *node;
struct ospf_vl_data *vl_data;
struct ospf_interface *oi;
if (IS_DEBUG_OSPF_EVENT)
{
zlog_debug ("ospf_vl_up_check(): Start");
zlog_debug ("ospf_vl_up_check(): Router ID is %s", inet_ntoa (rid));
zlog_debug ("ospf_vl_up_check(): Area is %s", inet_ntoa (area->area_id));
}
for (ALL_LIST_ELEMENTS_RO (ospf->vlinks, node, vl_data))
{
if (IS_DEBUG_OSPF_EVENT)
{
zlog_debug ("%s: considering VL, %s in area %s", __func__,
vl_data->vl_oi->ifp->name,
inet_ntoa (vl_data->vl_area_id));
zlog_debug ("%s: peer ID: %s", __func__,
inet_ntoa (vl_data->vl_peer));
}
if (IPV4_ADDR_SAME (&vl_data->vl_peer, &rid) &&
IPV4_ADDR_SAME (&vl_data->vl_area_id, &area->area_id))
{
oi = vl_data->vl_oi;
SET_FLAG (vl_data->flags, OSPF_VL_FLAG_APPROVED);
if (IS_DEBUG_OSPF_EVENT)
zlog_debug ("ospf_vl_up_check(): this VL matched");
if (oi->state == ISM_Down)
{
if (IS_DEBUG_OSPF_EVENT)
zlog_debug ("ospf_vl_up_check(): VL is down, waking it up");
SET_FLAG (oi->ifp->flags, IFF_UP);
OSPF_ISM_EVENT_EXECUTE(oi,ISM_InterfaceUp);
}
if (ospf_vl_set_params (vl_data, v))
{
if (IS_DEBUG_OSPF (ism, ISM_EVENTS))
zlog_debug ("ospf_vl_up_check: VL cost change,"
" scheduling router lsa refresh");
if (ospf->backbone)
ospf_router_lsa_update_area (ospf->backbone);
else if (IS_DEBUG_OSPF (ism, ISM_EVENTS))
zlog_debug ("ospf_vl_up_check: VL cost change, no backbone!");
}
}
}
}
void ospf_if_recalculate_output_cost(struct interface *ifp)
{
u_int32_t newcost;
struct route_node *rn;
for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) {
struct ospf_interface *oi;
if ((oi = rn->info) == NULL)
continue;
newcost = ospf_if_get_output_cost(oi);
/* Is actual output cost changed? */
if (oi->output_cost != newcost) {
oi->output_cost = newcost;
ospf_router_lsa_update_area(oi->area);
}
}
}
static void
ism_change_state (struct ospf_interface *oi, int state)
{
int old_state;
struct ospf_lsa *lsa;
/* Logging change of state. */
if (IS_DEBUG_OSPF (ism, ISM_STATUS))
zlog (NULL, LOG_DEBUG, "ISM[%s]: State change %s -> %s", IF_NAME (oi),
LOOKUP (ospf_ism_state_msg, oi->state),
LOOKUP (ospf_ism_state_msg, state));
old_state = oi->state;
oi->state = state;
oi->state_change++;
#ifdef HAVE_SNMP
/* Terminal state or regression */
if ((state == ISM_DR) || (state == ISM_Backup) || (state == ISM_DROther) ||
(state == ISM_PointToPoint) || (state < old_state))
{
/* ospfVirtIfStateChange */
if (oi->type == OSPF_IFTYPE_VIRTUALLINK)
ospfTrapVirtIfStateChange (oi);
/* ospfIfStateChange */
else
ospfTrapIfStateChange (oi);
}
#endif
/* Set multicast memberships appropriately for new state. */
ospf_if_set_multicast(oi);
if (old_state == ISM_Down || state == ISM_Down)
ospf_check_abr_status (oi->ospf);
/* Originate router-LSA. */
if (state == ISM_Down)
{
if (oi->area->act_ints > 0)
oi->area->act_ints--;
}
else if (old_state == ISM_Down)
oi->area->act_ints++;
/* schedule router-LSA originate. */
ospf_router_lsa_update_area (oi->area);
/* Originate network-LSA. */
if (old_state != ISM_DR && state == ISM_DR)
ospf_network_lsa_update (oi);
else if (old_state == ISM_DR && state != ISM_DR)
{
/* Free self originated network LSA. */
lsa = oi->network_lsa_self;
if (lsa)
ospf_lsa_flush_area (lsa, oi->area);
ospf_lsa_unlock (&oi->network_lsa_self);
oi->network_lsa_self = NULL;
}
ospf_opaque_ism_change (oi, old_state);
/* Check area border status. */
ospf_check_abr_status (oi->ospf);
}
static void
nsm_change_state (struct ospf_neighbor *nbr, int state)
{
struct ospf_interface *oi = nbr->oi;
struct ospf_area *vl_area = NULL;
u_char old_state;
int x;
int force = 1;
/* Preserve old status. */
old_state = nbr->state;
/* Change to new status. */
nbr->state = state;
/* Statistics. */
nbr->state_change++;
if (oi->type == OSPF_IFTYPE_VIRTUALLINK)
vl_area = ospf_area_lookup_by_area_id (oi->ospf, oi->vl_data->vl_area_id);
/* One of the neighboring routers changes to/from the FULL state. */
if ((old_state != NSM_Full && state == NSM_Full) ||
(old_state == NSM_Full && state != NSM_Full))
{
if (state == NSM_Full)
{
oi->full_nbrs++;
oi->area->full_nbrs++;
ospf_check_abr_status (oi->ospf);
if (oi->type == OSPF_IFTYPE_VIRTUALLINK && vl_area)
if (++vl_area->full_vls == 1)
ospf_schedule_abr_task (oi->ospf);
/* kevinm: refresh any redistributions */
for (x = ZEBRA_ROUTE_SYSTEM; x < ZEBRA_ROUTE_MAX; x++)
{
if (x == ZEBRA_ROUTE_OSPF || x == ZEBRA_ROUTE_OSPF6)
continue;
ospf_external_lsa_refresh_type (oi->ospf, x, force);
}
/* XXX: Clearly some thing is wrong with refresh of external LSAs
* this added to hack around defaults not refreshing after a timer
* jump.
*/
ospf_external_lsa_refresh_default (oi->ospf);
}
else
{
oi->full_nbrs--;
oi->area->full_nbrs--;
ospf_check_abr_status (oi->ospf);
if (oi->type == OSPF_IFTYPE_VIRTUALLINK && vl_area)
if (vl_area->full_vls > 0)
if (--vl_area->full_vls == 0)
ospf_schedule_abr_task (oi->ospf);
}
zlog_info ("nsm_change_state(%s, %s -> %s): "
"scheduling new router-LSA origination",
inet_ntoa (nbr->router_id),
LOOKUP(ospf_nsm_state_msg, old_state),
LOOKUP(ospf_nsm_state_msg, state));
ospf_router_lsa_update_area (oi->area);
if (oi->type == OSPF_IFTYPE_VIRTUALLINK)
{
struct ospf_area *vl_area =
ospf_area_lookup_by_area_id (oi->ospf, oi->vl_data->vl_area_id);
if (vl_area)
ospf_router_lsa_update_area (vl_area);
}
/* Originate network-LSA. */
if (oi->state == ISM_DR)
{
if (oi->network_lsa_self && oi->full_nbrs == 0)
{
ospf_lsa_flush_area (oi->network_lsa_self, oi->area);
ospf_lsa_unlock (&oi->network_lsa_self);
oi->network_lsa_self = NULL;
}
else
ospf_network_lsa_update (oi);
}
}
#ifdef HAVE_OPAQUE_LSA
ospf_opaque_nsm_change (nbr, old_state);
#endif /* HAVE_OPAQUE_LSA */
/* State changes from > ExStart to <= ExStart should clear any Exchange
* or Full/LSA Update related lists and state.
* Potential causal events: BadLSReq, SeqNumberMismatch, AdjOK?
*/
if ((old_state > NSM_ExStart) && (state <= NSM_ExStart))
nsm_clear_adj (nbr);
/* Start DD exchange protocol */
if (state == NSM_ExStart)
{
if (nbr->dd_seqnum == 0)
nbr->dd_seqnum = quagga_time (NULL);
else
nbr->dd_seqnum++;
nbr->dd_flags = OSPF_DD_FLAG_I|OSPF_DD_FLAG_M|OSPF_DD_FLAG_MS;
ospf_db_desc_send (nbr);
}
/* clear cryptographic sequence number */
if (state == NSM_Down)
nbr->crypt_seqnum = 0;
/* Generete NeighborChange ISM event. */
switch (oi->state) {
case ISM_DROther:
case ISM_Backup:
case ISM_DR:
if ((old_state < NSM_TwoWay && state >= NSM_TwoWay) ||
(old_state >= NSM_TwoWay && state < NSM_TwoWay))
OSPF_ISM_EVENT_EXECUTE (oi, ISM_NeighborChange);
break;
default:
/* ISM_PointToPoint -> ISM_Down, ISM_Loopback -> ISM_Down, etc. */
break;
}
/* Preserve old status? */
}
