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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* OSPF version 2 Neighbor State Machine
* From RFC2328 [OSPF Version 2]
* Copyright (C) 1999 Toshiaki Takada
*/
#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_HelloReceived 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) event_add_timer(master, (F), nbr, (V), &(T))
/* Macro for OSPF NSM schedule event. */
#define OSPF_NSM_EVENT_SCHEDULE(N, E) \
event_add_event(master, ospf_nsm_event, (N), (E), NULL)
/* Macro for OSPF NSM execute event. */
#define OSPF_NSM_EVENT_EXECUTE(N, E) \
event_execute(master, ospf_nsm_event, (N), (E), NULL)
/* Prototypes. */
extern void ospf_nsm_event(struct event *e);
extern void ospf_check_nbr_loading(struct ospf_neighbor *nbr);
extern int ospf_db_summary_isempty(struct ospf_neighbor *nbr);
extern int ospf_db_summary_count(struct ospf_neighbor *nbr);
extern void ospf_db_summary_clear(struct ospf_neighbor *nbr);
extern int nsm_should_adj(struct ospf_neighbor *nbr);
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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