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/*
* OSPF version 2 Neighbor State Machine
* From RFC2328 [OSPF Version 2]
* Copyright (C) 1999 Toshiaki Takada
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _ZEBRA_OSPF_NSM_H
#define _ZEBRA_OSPF_NSM_H
#include "hook.h"
/* OSPF Neighbor State Machine State. */
#define NSM_DependUpon 0
#define NSM_Deleted 1
#define NSM_Down 2
#define NSM_Attempt 3
#define NSM_Init 4
#define NSM_TwoWay 5
#define NSM_ExStart 6
#define NSM_Exchange 7
#define NSM_Loading 8
#define NSM_Full 9
#define OSPF_NSM_STATE_MAX 10
/* OSPF Neighbor State Machine Event. */
#define NSM_NoEvent 0
#define NSM_PacketReceived 1 /* HelloReceived in the protocol */
#define NSM_Start 2
#define NSM_TwoWayReceived 3
#define NSM_NegotiationDone 4
#define NSM_ExchangeDone 5
#define NSM_BadLSReq 6
#define NSM_LoadingDone 7
#define NSM_AdjOK 8
#define NSM_SeqNumberMismatch 9
#define NSM_OneWayReceived 10
#define NSM_KillNbr 11
#define NSM_InactivityTimer 12
#define NSM_LLDown 13
#define OSPF_NSM_EVENT_MAX 14
/* Macro for OSPF NSM timer turn on. */
#define OSPF_NSM_TIMER_ON(T,F,V) thread_add_timer (master, (F), nbr, (V), &(T))
/* Macro for OSPF NSM timer turn off. */
#define OSPF_NSM_TIMER_OFF(X) \
do { \
if (X) { \
thread_cancel(X); \
(X) = NULL; \
} \
} while (0)
/* Macro for OSPF NSM schedule event. */
#define OSPF_NSM_EVENT_SCHEDULE(N, E) \
thread_add_event(master, ospf_nsm_event, (N), (E), NULL)
/* Macro for OSPF NSM execute event. */
#define OSPF_NSM_EVENT_EXECUTE(N, E) \
thread_execute(master, ospf_nsm_event, (N), (E))
/* Prototypes. */
extern int ospf_nsm_event(struct thread *);
extern void ospf_check_nbr_loading(struct ospf_neighbor *);
extern int ospf_db_summary_isempty(struct ospf_neighbor *);
extern int ospf_db_summary_count(struct ospf_neighbor *);
extern void ospf_db_summary_clear(struct ospf_neighbor *);
DECLARE_HOOK(ospf_nsm_change,
(struct ospf_neighbor * on, int state, int oldstate),
(on, state, oldstate))
#endif /* _ZEBRA_OSPF_NSM_H */
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