arch/arm/plat-feroceon/mv_drivers_lsp/mv_cph/mv_cph_infra.c

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********************************************************************************
* mv_cph_infra.c
*
* DESCRIPTION: Include user space infrastructure modules definitions
*
* DEPENDENCIES:
*               None
*
* CREATED BY:   VictorGu
*
* DATE CREATED: 22Jan2013
*
* FILE REVISION NUMBER:
*               Revision: 1.0
*
*
*******************************************************************************/
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/if_vlan.h>
#include <net/ip.h>
#include <net/ipv6.h>

#include "mv_cph_header.h"

/******************************************************************************
 * Variable Definition
 ******************************************************************************/
static CHAR g_unknown_str[] = "<unknown>";

/******************************************************************************
 * Function Definition
 ******************************************************************************/
/******************************************************************************
* mindex_tpm_src_to_app_port()
*
* DESCRIPTION:Convert TPM source port to application UNI port 
*
* INPUTS:
*       src_port    - TPM source port
*
* OUTPUTS:
*       Application UNI port index
*
* RETURNS:
*       On success, the function returns application UNI port index. 
*       On error return invalid application UNI port index.
*******************************************************************************/
MV_APP_ETH_PORT_UNI_E mindex_tpm_src_to_app_port(tpm_src_port_type_t src_port)
{
    MV_APP_ETH_PORT_UNI_E app_port = MV_APP_ETH_PORT_INVALID;

    /* Should modify below code in case support more than four UNI ports */
    if (src_port <= TPM_SRC_PORT_UNI_3)
    {
        app_port = MV_APP_ETH_PORT_INDEX_MIN + (src_port - TPM_SRC_PORT_UNI_0);
    }
    
    return app_port;
}

/******************************************************************************
* mindex_mh_to_app_llid()
*
* DESCRIPTION:Convert Marvell header to application LLID 
*
* INPUTS:
*       mh  - Marvell header
*
* OUTPUTS:
*       Application LLID
*
* RETURNS:
*       On success, the function returns application LLID. 
*       On error return invalid application LLID.
*******************************************************************************/
MV_TCONT_LLID_E mindex_mh_to_app_llid(UINT16 mh)
{
    MV_TCONT_LLID_E llid       = MV_TCONT_LLID_INVALID;
    UINT8           llid_index = 0;

    llid_index = (mh >> 8) & 0x0f;
    
    if (llid_index > 0)
    {
        if (0x0f == llid_index)
        {
            llid = MV_TCONT_LLID_BROADCAST;
        }
        else
        {
            llid = llid_index -1;
            if(llid > MV_TCONT_LLID_7)
                llid = MV_TCONT_LLID_INVALID;
        }
    }
    
    return llid;
}

/******************************************************************************
* mtype_get_digit_num()
*
* DESCRIPTION:Convert character string to digital number 
*
* INPUTS:
*       str   - Character string
*
* OUTPUTS:
*       None
*
* RETURNS:
*       Digital numbe
*******************************************************************************/
UINT32 mtype_get_digit_num(const CHAR  *str)
{
    UINT32  val = 0;

    if ((str[1] == 'x') || (str[1] == 'X'))
        sscanf(&str[2], "%x", &val);
    else
        val = simple_strtoul(str, NULL, 10);

    return val;
}

/******************************************************************************
* mtype_lookup_enum_str()
* _____________________________________________________________________________
*
* DESCRIPTION:lookup enum string according to enum value
*
* INPUTS:
*       p_enum_array   - Pointer to enum array
*       enum_value     - The enum value to be matched
*
* OUTPUTS:
*       None
*
* RETURNS:
*       Enum string
*******************************************************************************/
CHAR *mtype_lookup_enum_str(MV_ENUM_ARRAY_T *p_enum_array, INT32 enum_value)
{
    INT32 idx;
    
    for (idx = 0; idx < p_enum_array->enum_num; idx++)
    {
        if (enum_value == p_enum_array->enum_array[idx].enum_value)
            return p_enum_array->enum_array[idx].enum_str;
    }
    return g_unknown_str;
}

/******************************************************************************
* mutils_is_frwd_broadcast_packet()
* _____________________________________________________________________________
*
* DESCRIPTION:Check whether packet is directly forwarded broadcast one
*
* INPUTS:
*       data   - packet data
*
* OUTPUTS:
*       None
*
* RETURNS:
*       TRUE: broadcast packet, FALSE:none broadcast packet
*******************************************************************************/
BOOL mutils_is_frwd_broadcast_packet(char *data)
{
    char bc_mac[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
    char *p_data;

    p_data = data + MV_ETH_MH_SIZE;

    if (!memcmp(p_data, &bc_mac[0], sizeof(bc_mac))) {
        return TRUE;
    }
    else
        return FALSE;
}