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/*
* Copyright (c) 2003 VIA Networking, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*
* File: tether.c
*
* Purpose:
*
* Author: Tevin Chen
*
* Date: May 21, 1996
*
* Functions:
* ETHbIsBufferCrc32Ok - Check CRC value of the buffer if Ok or not
*
* Revision History:
*
*/
#include "device.h"
#include "tmacro.h"
#include "tether.h"
/*
* Description: Check CRC value of the buffer if Ok or not
*
* Parameters:
* In:
* pbyBuffer - pointer of buffer (normally is rx buffer)
* cbFrameLength - length of buffer, including CRC portion
* Out:
* none
*
* Return Value: true if ok; false if error.
*
*/
bool ETHbIsBufferCrc32Ok(u8 * pbyBuffer, unsigned int cbFrameLength)
{
u32 n_crc = ~ether_crc_le(cbFrameLength - 4, pbyBuffer);
if (le32_to_cpu(*((__le32 *)(pbyBuffer + cbFrameLength - 4))) != n_crc)
return false;
return true;
}
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