/* ospf_interface_state_machine.c - interface state machine functions and tables *//* Copyright 1984 - 2001 Wind River Systems, Inc. *//*modification history-------------------- 20,12december01,kc         Invoked ospf2Mapi_request() only if interface sm is executed. 19,13october01,kc			Dynamic configuration changes. 18,14august01,kc			Added support for ospfVirtIfTable updates. 17,26june01,jkw   			Moved global variables to ospf_globals.h for cleanup 16,26september00,reshma	Added WindRiver CopyRight 15,25september00,reshma	RFC-1587 implementation for OSPF NSSA Option, also tested against ANVL. 14,07july00,reshma			Unix compatibility related changes. 13,04april00,reshma		Added some MIB support (Read only).Passed all important ANVL OSPF tests. 12,23december99,reshma		Compatibility with VxWorks-IP and VxWorks RTM-interface 11,28december98,jack		Compiled and added some comments 10,11november98,jack		Config changes, linted and big endian changes 09,30october98,jack		Incorporate changes for compilation on Vxworks 08,23august98,jack			ANVL tested OSPF with PATRICIA tree route table and no recursion 07,10august98,jack			PATRICIA Route Table Based OSPF Code Base 06,04june98,jack			Integration with RTM and BGP 05,24april98,jack			RTM changes 04,10july97,cindy			Pre-release v1.52b 03,02october97,cindy		Release Version 1.52 02,22october96,cindy		Release Version 1.50 01,05june96,cindy			First Beta Release*//*DESCRIPTIONospf_interface_state_machine.c is used for executing the interface state machine.  This filetakes in an interface event and the interface's current state and executes the interface statemachine to produce a new interface state.This file is used whenever the interface state machine is called.*/#include "ospf.h"#if defined (__OSPF_VIRTUAL_STACK__)#include "ospf_vs_lib.h"#endif /* __OSPF_VIRTUAL_STACK__ */#include "ospf_interface_state_machine.h"/*************************************************************************** ospf_execute_interface_state_machine - Execute interface state machine** This routine will execute the appropriate interface state machine function* based on the interface event received and what state the interface is * currently in.** <event> Interface event** <state> Current interface state** <sptr_interface> OSPF interface** RETURNS: N/A** ERRNO: N/A** NOMANUAL*/void ospf_execute_interface_state_machine (enum OSPF_INTERFACE_EVENT event,enum OSPF_INTERFACE_STATE state,OSPF_INTERFACE *sptr_interface){#if defined (__OPAQUE_LSA__)	OSPF_OPAQUE_CALLBACK *sptr_opaque_callback = NULL;	OSPF_OPAQUE_CALLBACK *sptr_next_node = NULL;#endif /* __OPAQUE_LSA__ */	OSPF_PRINTF_PROLOGUE (OSPF_PROLOGUE_PRINTF, "OSPF: Entering ospf_execute_interface_state_machine\r\n");	if (ospf_interface_event_processing_table[event][state].fptr_interface_transition_function != NULL)		{		(*ospf_interface_event_processing_table[event][state].fptr_interface_transition_function) (sptr_interface);#if defined (__OSPF_MIB__)	/* tell OSPF MIB to update its operational status and statistics for this interface */	if ( sptr_interface->type == OSPF_VIRTUAL_LINK)        ospf2Mapi_request( (void *)sptr_interface, ospfVirtIfUpdateReqType );	else        ospf2Mapi_request( (void *)sptr_interface, ospfIfUpdateReqType );#endif /* __OSPF_MIB__ */		}#if defined (__OPAQUE_LSA__)	for (sptr_opaque_callback = ospf.sptr_type_9_callback_list_head; sptr_opaque_callback != NULL; sptr_opaque_callback = sptr_next_node)		{		sptr_next_node = sptr_opaque_callback->sptr_forward_link;		sptr_opaque_callback->interface_state_machine_change_hook(event,state,sptr_interface);		}	for (sptr_opaque_callback = ospf.sptr_type_10_callback_list_head; sptr_opaque_callback != NULL; sptr_opaque_callback = sptr_next_node)		{		sptr_next_node = sptr_opaque_callback->sptr_forward_link;		sptr_opaque_callback->interface_state_machine_change_hook(event,state,sptr_interface);		}	for (sptr_opaque_callback = ospf.sptr_type_11_callback_list_head; sptr_opaque_callback != NULL; sptr_opaque_callback = sptr_next_node)		{		sptr_next_node = sptr_opaque_callback->sptr_forward_link;		sptr_opaque_callback->interface_state_machine_change_hook(event,state,sptr_interface);		}#endif /* __OPAQUE_LSA__ */}