2009-06-13 05:38:31 -06:00
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/*
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* Copyright (c) 2003 VIA Networking, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*
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* File: tether.c
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*
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* Purpose:
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*
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* Author: Tevin Chen
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*
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* Date: May 21, 1996
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*
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* Functions:
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* ETHbIsBufferCrc32Ok - Check CRC value of the buffer if Ok or not
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*
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* Revision History:
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*
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*/
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#include "device.h"
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#include "tmacro.h"
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#include "tcrc.h"
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#include "tether.h"
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/*
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* Description: Check CRC value of the buffer if Ok or not
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*
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* Parameters:
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* In:
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* pbyBuffer - pointer of buffer (normally is rx buffer)
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* cbFrameLength - length of buffer, including CRC portion
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* Out:
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* none
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*
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2013-02-12 18:36:30 -07:00
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* Return Value: true if ok; false if error.
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2009-06-13 05:38:31 -06:00
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*
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*/
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2013-02-25 18:32:51 -07:00
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bool ETHbIsBufferCrc32Ok(u8 * pbyBuffer, unsigned int cbFrameLength)
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2009-06-13 05:38:31 -06:00
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{
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2013-02-25 18:32:53 -07:00
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u32 dwCRC;
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2009-06-13 05:38:31 -06:00
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2010-03-29 06:28:33 -06:00
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dwCRC = CRCdwGetCrc32(pbyBuffer, cbFrameLength - 4);
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2013-02-25 18:32:53 -07:00
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if (cpu_to_le32(*((u32 *)(pbyBuffer + cbFrameLength - 4))) != dwCRC)
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2013-02-12 18:36:29 -07:00
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return false;
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2013-02-12 18:36:30 -07:00
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return true;
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2009-06-13 05:38:31 -06:00
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}
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