/*
 ******************************************************************************
 *                     SOURCE FILE
 *
 *     Document no: @(#) $Name: VXWORKS_ITER40_2019102207 $ $RCSfile: ipcom_forwarder_common.c,v $ $Revision: 1.3 $
 *     $Source: /home/interpeak/CVSRoot/ipcom/src/ipcom_forwarder_common.c,v $
 *     $Author: ulf $
 *     $State: Exp $ $Locker:  $
 *
 *     INTERPEAK_COPYRIGHT_STRING
 ******************************************************************************
 */

/*
 ****************************************************************************
 * 1                    DESCRIPTION
 ****************************************************************************
 *
 */

/*
 ****************************************************************************
 * 2                    CONFIGURATION
 ****************************************************************************
 */

#define IPCOM_FORWARDER_COMMON_C
#define IPCOM_FORWARDER_C

#include "ipcom_config.h"

#if defined(IPCOM_USE_FORWARDER) && !defined(IP_PORT_UNIX)

/*
 ****************************************************************************
 * 3                    INCLUDE FILES
 ****************************************************************************
 */

/* Ipcom include files */
#define IPCOM_USE_CLIB_PROTO
#include "ipcom_clib.h"
#include "ipcom_err.h"
#include "ipcom_os.h"
#include "ipcom_syslog.h"

#include <ipcom_cstyle.h>
#include <ipcom_netif.h>
#include <ipcom_pkt.h>
#include <ipcom_syslog.h>
#include <ipcom_type.h>
#include <ipcom_pipe.h>
#include <ipcom_shell.h>
#include <ipcom_getopt.h>
#include <ipcom_atomic.h>


#include <ipnet.h>
#include <ipnet_config.h>
#include <ipnet_netif.h>
#include <ipnet_eth.h>
#include <ipnet_route.h>
#include "ipnet_usr_sock.h"

#include "ipcom_forwarder.h"

#ifndef IPCOM_USE_SMP
#include "ipcom_mipc.h"
#endif

#ifdef IPIPSEC2
#include <ipipsec_config.h>
#endif


/*
 ****************************************************************************
 * 4                    DEFINES
 ****************************************************************************
 */


/*
 ****************************************************************************
 * 5                    TYPES
 ****************************************************************************
 */

/*
****************************************************************************
 * 6                    EXTERN PROTOTYPES
 ****************************************************************************
 */

/*
 ****************************************************************************
 * 7                    LOCAL PROTOTYPES
 ****************************************************************************
 */


/*
 ****************************************************************************
 * 8                    DATA
 ****************************************************************************
 */

IP_PUBLIC int ipcom_forwarder_fw_enable = 1;		/* Start off enabled */
IP_PUBLIC int ipcom_forwarder_fw_started = 0;
IP_PUBLIC Ip_u32 ipcom_forwarder_seed = 0x5a014310; /* Start seed for tag generation */

IP_PUBLIC Ipcom_fw_t *ipcom_fw = IP_NULL;

#ifdef IPCOM_USE_FWD_TRACE
IP_PUBLIC const char *ipcom_fwd_trace_file;
IP_PUBLIC const char *ipcom_fwd_trace_func;
IP_PUBLIC int ipcom_fwd_trace_line;
#endif
/*
 ****************************************************************************
 * 9                    STATIC FUNCTIONS
 ****************************************************************************
 */


/*
 ****************************************************************************
 * 10                   PUBLIC FUNCTIONS
 ****************************************************************************
 */


#ifdef IPCOM_USE_CALCULATE_KEY
/*
 *===========================================================================
 *                    ipcom_forwarder_calculate_pkt_key
 *===========================================================================
 * Context:     any
 * Description: Calculate key based on 'ipcom_pkt'
 * Parameters:
 * Returns:
 *
 */
IP_PUBLIC Ip_u16
ipcom_forwarder_calculate_pkt_key(Ipcom_pkt *pkt)
{
    Ip_u32 k;
    Ip_u16 *p = (Ip_u16 *)(pkt->data + pkt->start + LL_ETH_HDR_SZ);

    k = ((p[6] + p[7]) << 1) + p[8] + p[9];

    return k + (k >> 16);
}

/*
 *===========================================================================
 *                    ipcom_forwarder_calculate_packet_key
 *===========================================================================
 * Context:     any
 * Description: Calculate key based on 'packet'
 * Parameters:
 * Returns:
 *
 */
IP_PUBLIC Ip_u16
ipcom_forwarder_calculate_packet_key(void *packet)
{
    Ip_u32 k;
    Ip_u16 *p = packet;

    k = ((p[7 + 6] + p[7 + 7]) << 1) + p[7 + 8] + p[7 + 9];

    return k + (k >> 16);
}
#endif /* IPCOM_USE_CALCULATE_KEY */


#else
int ipcom_forwarder_common_empty_file;
#endif /* IPCOM_USE_FORWARDER */

/*
 ****************************************************************************
 *                      END OF FILE
 ****************************************************************************
 */