예제 #1
0
/* Execute ISM event process. */
int
ospf_ism_event (struct thread *thread)
{
  int event;
  int next_state;
  struct ospf_interface *oi;

  oi = THREAD_ARG (thread);
  event = THREAD_VAL (thread);

  /* Call function. */
  next_state = (*(ISM [oi->state][event].func))(oi);

  if (! next_state)
    next_state = ISM [oi->state][event].next_state;

  if (IS_DEBUG_OSPF (ism, ISM_EVENTS))
    zlog (NULL, LOG_DEBUG, "ISM[%s]: %s (%s)", IF_NAME (oi),
	  LOOKUP (ospf_ism_state_msg, oi->state),
	  ospf_ism_event_str[event]);

  /* If state is changed. */
  if (next_state != oi->state)
    ism_change_state (oi, next_state);

  /* Make sure timer is set. */
  ism_timer_set (oi);

  return 0;
}
예제 #2
0
파일: ospf_nsm.c 프로젝트: OPSF/uClinux
/* Execute NSM event process. */
int
ospf_nsm_event (struct thread *thread)
{
  int event;
  int next_state;
  struct ospf_neighbor *nbr;
  struct in_addr router_id;
  int old_state;
  struct ospf_interface *oi;

  nbr = THREAD_ARG (thread);
  event = THREAD_VAL (thread);
  router_id = nbr->router_id;

  old_state = nbr->state;
  oi = nbr->oi ;
  
  /* Call function. */
  next_state = (*(NSM [nbr->state][event].func))(nbr);

  /* When event is NSM_KillNbr or InactivityTimer, the neighbor is
     deleted. */
  if (event == NSM_KillNbr || event == NSM_InactivityTimer)
    {
      if (IS_DEBUG_OSPF (nsm, NSM_EVENTS))
	zlog_debug ("NSM[%s:%s]: neighbor deleted",
		   IF_NAME (oi), inet_ntoa (router_id));

      /* Timers are canceled in ospf_nbr_free, moreover we cannot call
         nsm_timer_set here because nbr is freed already!!!*/
      /*nsm_timer_set (nbr);*/

      return 0;
    }

  if (! next_state)
    next_state = NSM [nbr->state][event].next_state;

  if (IS_DEBUG_OSPF (nsm, NSM_EVENTS))
    zlog_debug ("NSM[%s:%s]: %s (%s)", IF_NAME (oi),
	       inet_ntoa (nbr->router_id),
	       LOOKUP (ospf_nsm_state_msg, nbr->state),
	       ospf_nsm_event_str [event]);
  
  /* If state is changed. */
  if (next_state != nbr->state)
    nsm_change_state (nbr, next_state);

  /* Make sure timer is set. */
  nsm_timer_set (nbr);

  return 0;
}
예제 #3
0
/* BGP connect retry timer. */
static int
bgp_connect_timer (struct thread *thread)
{
  struct peer *peer;

  peer = THREAD_ARG (thread);
  peer->t_connect = NULL;

  if (BGP_DEBUG (fsm, FSM))
    zlog (peer->log, LOG_DEBUG, "%s [FSM] Timer (connect timer expire)",
	  peer->host);

  THREAD_VAL (thread) = ConnectRetry_timer_expired;
  bgp_event (thread); /* bgp_event unlocks peer */

  return 0;
}
예제 #4
0
/* BGP start timer.  This function set BGP_Start event to thread value
   and process event. */
static int
bgp_start_timer (struct thread *thread)
{
  struct peer *peer;

  peer = THREAD_ARG (thread);
  peer->t_start = NULL;

  if (BGP_DEBUG (fsm, FSM))
    zlog (peer->log, LOG_DEBUG,
	  "%s [FSM] Timer (start timer expire).", peer->host);

  THREAD_VAL (thread) = BGP_Start;
  bgp_event (thread);  /* bgp_event unlocks peer */

  return 0;
}
예제 #5
0
/* BGP keepalive fire ! */
static int
bgp_keepalive_timer (struct thread *thread)
{
  struct peer *peer;

  peer = THREAD_ARG (thread);
  peer->t_keepalive = NULL;

  if (BGP_DEBUG (fsm, FSM))
    zlog (peer->log, LOG_DEBUG,
	  "%s [FSM] Timer (keepalive timer expire)",
	  peer->host);

  THREAD_VAL (thread) = KeepAlive_timer_expired;
  bgp_event (thread); /* bgp_event unlocks peer */

  return 0;
}
예제 #6
0
파일: bgp_fsm.c 프로젝트: AllardJ/Tomato
/* BGP holdtime timer. */
static int
bgp_holdtime_timer (struct thread *thread)
{
  struct peer *peer;

  peer = THREAD_ARG (thread);
  peer->t_holdtime = NULL;

  if (BGP_DEBUG (fsm, FSM))
    zlog (peer->log, LOG_DEBUG,
	  "%s [FSM] Timer (holdtime timer expire)",
	  peer->host);

  THREAD_VAL (thread) = Hold_Timer_expired;
  bgp_event (thread);

  return 0;
}
/* Execute event process. */
int
bgp_event (struct thread *thread)
{
  int ret = 0;
  int event;
  int next;
  struct peer *peer;

  peer = THREAD_ARG (thread);
  event = THREAD_VAL (thread);

  /* Logging this event. */
  next = FSM [peer->status -1][event - 1].next_state;

  if (BGP_DEBUG (fsm, FSM) && peer->status != next)
    plog_debug (peer->log, "%s [FSM] %s (%s->%s)", peer->host, 
	       bgp_event_str[event],
	       LOOKUP (bgp_status_msg, peer->status),
	       LOOKUP (bgp_status_msg, next));

  /* Call function. */
  if (FSM [peer->status -1][event - 1].func)
    ret = (*(FSM [peer->status - 1][event - 1].func))(peer);

  /* When function do not want proceed next job return -1. */
  if (ret >= 0)
    {
      /* If status is changed. */
      if (next != peer->status)
        {
          /* Transition into Clearing must /always/ clear all routes.. */
          if (next == Clearing)
            bgp_clear_route_all (peer);
          
          bgp_fsm_change_status (peer, next);
        }
      
      /* Make sure timer is set. */
      bgp_timer_set (peer);
    }
  
  return ret;
}
예제 #8
0
파일: bgp_fsm.c 프로젝트: AllardJ/Tomato
/* BGP start timer.  This function set BGP_Start event to thread value
   and process event. */
static int
bgp_start_timer (struct thread *thread)
{
  struct peer *peer;

  peer = THREAD_ARG (thread);
  peer->t_start = NULL;

  UNSET_FLAG (peer->sflags, PEER_STATUS_CREATE_INIT);

  if (BGP_DEBUG (fsm, FSM))
    zlog (peer->log, LOG_DEBUG,
	  "%s [FSM] Timer (start timer expire).", peer->host);

  THREAD_VAL (thread) = BGP_Start;
  bgp_event (thread);

  return 0;
}
예제 #9
0
/* Execute event process. */
int
bgp_event (struct thread *thread)
{
  int ret;
  int event;
  int next;
  struct peer *peer;

  peer = THREAD_ARG (thread);
  event = THREAD_VAL (thread);

  /* Logging this event. */
  next = FSM [peer->status -1][event - 1].next_state;

  if (BGP_DEBUG (fsm, FSM))
    plog_info (peer->log, "%s [FSM] %s (%s->%s)", peer->host, 
	       bgp_event_str[event],
	       LOOKUP (bgp_status_msg, peer->status),
	       LOOKUP (bgp_status_msg, next));
  if (BGP_DEBUG (normal, NORMAL)
      && strcmp (LOOKUP (bgp_status_msg, peer->status), LOOKUP (bgp_status_msg, next)))
    zlog_info ("%s went from %s to %s",
	       peer->host,
	       LOOKUP (bgp_status_msg, peer->status),
	       LOOKUP (bgp_status_msg, next));

  /* Call function. */
  ret = (*(FSM [peer->status - 1][event - 1].func))(peer);

  /* When function do not want proceed next job return -1. */
  if (ret < 0)
    return ret;
    
  /* If status is changed. */
  if (next != peer->status)
    bgp_fsm_change_status (peer, next);

  /* Make sure timer is set. */
  bgp_timer_set (peer);

  return 0;
}
예제 #10
0
파일: ospf_nsm.c 프로젝트: AsherBond/quagga
/* Execute NSM event process. */
int
ospf_nsm_event (struct thread *thread)
{
  int event;
  int next_state;
  struct ospf_neighbor *nbr;

  nbr = THREAD_ARG (thread);
  event = THREAD_VAL (thread);

  if (IS_DEBUG_OSPF (nsm, NSM_EVENTS))
    zlog_debug ("NSM[%s:%s]: %s (%s)", IF_NAME (nbr->oi),
	       inet_ntoa (nbr->router_id),
	       LOOKUP (ospf_nsm_state_msg, nbr->state),
	       ospf_nsm_event_str [event]);
  
  next_state = NSM [nbr->state][event].next_state;

  /* Call function. */
  if (NSM [nbr->state][event].func != NULL)
    {
      int func_state = (*(NSM [nbr->state][event].func))(nbr);
      
      if (NSM [nbr->state][event].next_state == NSM_DependUpon)
        next_state = func_state;
      else if (func_state)
        {
          /* There's a mismatch between the FSM tables and what an FSM
           * action/state-change function returned. State changes which
           * do not have conditional/DependUpon next-states should not
           * try set next_state.
           */
          zlog_warn ("NSM[%s:%s]: %s (%s): "
                     "Warning: action tried to change next_state to %s",
                     IF_NAME (nbr->oi), inet_ntoa (nbr->router_id),
                     LOOKUP (ospf_nsm_state_msg, nbr->state),
                     ospf_nsm_event_str [event],
                     LOOKUP (ospf_nsm_state_msg, func_state));
        }
    }

  assert (next_state != NSM_DependUpon);
  
  /* If state is changed. */
  if (next_state != nbr->state)
    {
      nsm_notice_state_change (nbr, next_state, event);
      nsm_change_state (nbr, next_state);
    }

  /* Make sure timer is set. */
  nsm_timer_set (nbr);

  /* When event is NSM_KillNbr, InactivityTimer or LLDown, the neighbor
   * is deleted.
   *
   * Rather than encode knowledge here of which events lead to NBR
   * delete, we take our cue from the NSM table, via the dummy
   * 'Deleted' neighbour state.
   */
  if (nbr->state == NSM_Deleted)
    ospf_nbr_delete (nbr);

  return 0;
}