void
nsm_reset_nbr (struct ospf_neighbor *nbr)
{
/* Clear Database Summary list. */
if (!ospf_db_summary_isempty (nbr))
ospf_db_summary_clear (nbr);
/* Clear Link State Request list. */
if (!ospf_ls_request_isempty (nbr))
ospf_ls_request_delete_all (nbr);
/* Clear Link State Retransmission list. */
if (!ospf_ls_retransmit_isempty (nbr))
ospf_ls_retransmit_clear (nbr);
/* Cancel thread. */
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
OSPF_NSM_TIMER_OFF (nbr->t_ls_req);
OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
OSPF_NSM_TIMER_OFF (nbr->t_hello_reply);
#ifdef HAVE_OPAQUE_LSA
if (CHECK_FLAG (nbr->options, OSPF_OPTION_O))
UNSET_FLAG (nbr->options, OSPF_OPTION_O);
#endif /* HAVE_OPAQUE_LSA */
}
/* Hook function called after ospf NSM event is occured.
*
* Set/clear any timers whose condition is implicit to the neighbour
* state. There may be other timers which are set/unset according to other
* state.
*
* We rely on this function to properly clear timers in lower states,
* particularly before deleting a neighbour.
*/
static void
nsm_timer_set (struct ospf_neighbor *nbr)
{
switch (nbr->state)
{
case NSM_Deleted:
case NSM_Down:
OSPF_NSM_TIMER_OFF (nbr->t_inactivity);
OSPF_NSM_TIMER_OFF (nbr->t_hello_reply);
case NSM_Attempt:
case NSM_Init:
case NSM_TwoWay:
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
OSPF_NSM_TIMER_OFF (nbr->t_ls_req);
break;
case NSM_ExStart:
OSPF_NSM_TIMER_ON (nbr->t_db_desc, ospf_db_desc_timer, nbr->v_db_desc);
OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
OSPF_NSM_TIMER_OFF (nbr->t_ls_req);
break;
case NSM_Exchange:
OSPF_NSM_TIMER_ON (nbr->t_ls_upd, ospf_ls_upd_timer, nbr->v_ls_upd);
if (!IS_SET_DD_MS (nbr->dd_flags))
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
break;
case NSM_Loading:
case NSM_Full:
default:
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
break;
}
}
void
ospf_nbr_free (struct ospf_neighbor *nbr)
{
/* Free DB summary list. */
if (ospf_db_summary_count (nbr))
ospf_db_summary_clear (nbr);
/* ospf_db_summary_delete_all (nbr); */
/* Free ls request list. */
if (ospf_ls_request_count (nbr))
ospf_ls_request_delete_all (nbr);
/* Free retransmit list. */
if (ospf_ls_retransmit_count (nbr))
ospf_ls_retransmit_clear (nbr);
/* Cleanup LSDBs. */
ospf_lsdb_cleanup (&nbr->db_sum);
ospf_lsdb_cleanup (&nbr->ls_req);
ospf_lsdb_cleanup (&nbr->ls_rxmt);
/* Clear last send packet. */
if (nbr->last_send)
ospf_packet_free (nbr->last_send);
if (nbr->nbr_nbma)
{
nbr->nbr_nbma->nbr = NULL;
nbr->nbr_nbma = NULL;
}
/* Cancel all timers. */
OSPF_NSM_TIMER_OFF (nbr->t_inactivity);
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
OSPF_NSM_TIMER_OFF (nbr->t_ls_req);
OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
/* Cancel all events. *//* Thread lookup cost would be negligible. */
thread_cancel_event (master, nbr);
XFREE (MTYPE_OSPF_NEIGHBOR, nbr);
}
void
nsm_reset_nbr (struct ospf_neighbor *nbr)
{
/* Clear Database Summary list. */
if (!ospf_db_summary_isempty (nbr))
ospf_db_summary_clear (nbr);
/* Clear Link State Request list. */
if (!ospf_ls_request_isempty (nbr))
ospf_ls_request_delete_all (nbr);
/* Clear Link State Retransmission list. */
if (!ospf_ls_retransmit_isempty (nbr))
ospf_ls_retransmit_clear (nbr);
/* Cancel thread. */
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
OSPF_NSM_TIMER_OFF (nbr->t_ls_req);
OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
OSPF_NSM_TIMER_OFF (nbr->t_hello_reply);
}
static int
nsm_start (struct ospf_neighbor *nbr)
{
if (nbr->nbr_nbma)
OSPF_POLL_TIMER_OFF (nbr->nbr_nbma->t_poll);
OSPF_NSM_TIMER_OFF (nbr->t_inactivity);
OSPF_NSM_TIMER_ON (nbr->t_inactivity, ospf_inactivity_timer,
nbr->v_inactivity);
return 0;
}
void
ospf_nbr_free (struct ospf_neighbor *nbr)
{
/* Free DB summary list. */
if (ospf_db_summary_count (nbr))
ospf_db_summary_clear (nbr);
/* ospf_db_summary_delete_all (nbr); */
/* Free ls request list. */
if (ospf_ls_request_count (nbr))
ospf_ls_request_delete_all (nbr);
/* Free retransmit list. */
if (ospf_ls_retransmit_count (nbr))
ospf_ls_retransmit_clear (nbr);
/* Cleanup LSDBs. */
ospf_lsdb_cleanup (&nbr->db_sum);
ospf_lsdb_cleanup (&nbr->ls_req);
ospf_lsdb_cleanup (&nbr->ls_rxmt);
/* Clear last send packet. */
if (nbr->last_send)
ospf_packet_free (nbr->last_send);
if (nbr->nbr_static)
{
nbr->nbr_static->neighbor = NULL;
nbr->nbr_static = NULL;
}
/* Cancel all timers. */
OSPF_NSM_TIMER_OFF (nbr->t_inactivity);
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
OSPF_NSM_TIMER_OFF (nbr->t_ls_req);
OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
XFREE (MTYPE_OSPF_NEIGHBOR, nbr);
}
int
nsm_hello_received (struct ospf_neighbor *nbr)
{
/* Start or Restart Inactivity Timer. */
OSPF_NSM_TIMER_OFF (nbr->t_inactivity);
OSPF_NSM_TIMER_ON (nbr->t_inactivity, ospf_inactivity_timer,
nbr->v_inactivity);
if (nbr->oi->type == OSPF_IFTYPE_NBMA && nbr->nbr_nbma)
OSPF_POLL_TIMER_OFF (nbr->nbr_nbma->t_poll);
return 0;
}
void
nsm_timer_set (struct ospf_neighbor *nbr)
{
switch (nbr->status)
{
case NSM_Down:
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
break;
case NSM_Attempt:
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
break;
case NSM_Init:
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
break;
case NSM_TwoWay:
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
break;
case NSM_ExStart:
OSPF_NSM_TIMER_ON (nbr->t_db_desc, ospf_db_desc_timer, nbr->v_db_desc);
OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
break;
case NSM_Exchange:
OSPF_NSM_TIMER_ON (nbr->t_ls_upd, ospf_ls_upd_timer, nbr->v_ls_upd);
if (!IS_SET_DD_MS (nbr->dd_flags))
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
break;
case NSM_Loading:
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
break;
case NSM_Full:
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
break;
default:
OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
break;
}
}
