ospf_entry_initialize.c

vxworks下ospf协议栈

/* ospf_entry_initialize.c - Entry point for OSPF */

/* Copyright 2001-2003 Wind River Systems, Inc. */
#include "copyright_wrs.h"

/*
modification history
--------------------
02d,29may03,agi changed CONFIGURATION_TABLE to OSPF_CONFIGURATION_TABLE as part
                of RWOS removal
02d,22may03,asr	 Changes to make OSPF virtual stack compatible
02c,14may03,agi  Changed RWOS semaphores to vxWorks semaphores
02b,22apr03,ram	 SPR#76812 Modifications for OSPF performance enhancements
02a,28jan03,ram	 SPR 85050 Added new ospf mutex for extenal route queue access
01e,19nov02,mwv  Merge TMS code SPR 84284
01d,21mar02,kc   Fixed ospf_task_initialize() to use rw_memory_free() for
                 freeing allocated memory if error occurs.
01c,13oct01,kc   Dynamic configuration changes.
01b,26jun01,jkw  Move global variables to ospf_globals.h for cleanup
01a,03may01,jkw  Added checks for NULL pointers and alarm messages
*/

/*
DESCRIPTION
ospf_entry_initialize.c is used for creating a new task for OSPF.  This file
reads in the static configuration file and calls the next function to initialize the router.
This file is used only at the startup of OSPF.
*/

#include "ospf.h"

#if defined (__OSPF_VIRTUAL_STACK__)
#include "ospf_vs_lib.h"
#endif /* __OSPF_VIRTUAL_STACK__ */

IMPORT enum TEST ospf_initialize_nvram( char *cptr_file_name, ULONG location_of_ini_file, char *cptr_section_name, void *vptr_location_of_configuration_table);

#if !defined (__OSPF_VIRTUAL_STACK__)
/*extern OSPF_CONFIGURATION_TABLE ospf_configuration_table;*/
#include "ospf_configuration.h" 
#endif /* __OSPF_VIRTUAL_STACK__ */




/***************************************************************************************
* ospf_task_initialize - dynamically export external routes from ospf
*
* This routine initializes the ospf task by initializing the configuration
* parameters, initializing the mib, and initializing the router.
*
* <p_configuration_file> Configuration file string
*
* RETURNS: OK or ERROR
*
* ERRNO: N/A
*
* NOMANUAL
*/

STATUS ospf_task_initialize 
    (
    const char *    p_configuration_file
    )
    {
	char *  p_ospf_data;    /* pointer to OSPF data */

	OSPF_PRINTF_PROLOGUE (OSPF_PROLOGUE_PRINTF, "OSPF: Entering ospf_task_initialize\r\n");

    /* asr: set virtual stack context before initializing OSPF */
    #if defined (VIRTUAL_STACK)
        virtualStackNumTaskIdSet (ospf.ospf_vsid);
    #endif /* VIRTUAL_STACK */
	
	p_ospf_data = (char *) table_malloc (1, OSPF_MAXIMUM_FILE_SIZE);

	if (p_ospf_data == NULL)
		{
        ospf_print_memory_error_message_and_free_buffer_if_necessary (
            (void *) NULL, "OSPF_MAXIMUM_FILE_SIZE");
		return( ERROR );
		}

	/* explicitly zero out the buffer ( TMS # 1569)*/
    memset (p_ospf_data, 0, OSPF_MAXIMUM_FILE_SIZE);
    memcpy (p_ospf_data, p_configuration_file,  OSPF_MAXIMUM_FILE_SIZE);

#if defined (__OSPF_VIRTUAL_STACK__)
	ospfConfigurationTableInit(&ospf_configuration_table);
#endif /* __OSPF_VIRTUAL_STACK__ */

	if (ospf_initialize_nvram (NULL, (ULONG) p_ospf_data,"OSPF Routing" , (void*) &ospf_configuration_table) == FAIL)
		{
		/* free the allocated buffer */
		table_free ((void *) p_ospf_data);
		return ERROR;
		}

	if (ospf_initialize_router (1) == FAIL)
		{
		/* free the allocated buffer */
		table_free ((void *) p_ospf_data);
		return ERROR;
		}

    /* free the allocated buffer */
	table_free ((void *) p_ospf_data);

	return OK;
    }