?? mbuf.h
字號:
/******************************************************************************
*
* (c) Freescale Inc. 2004 All rights reserved
*
* File Name : mBuf.h
* Description : Implementation of a buffering scheme based on mBUFs
*
* Version : 1.0
* Date : Jun/22/2004
*
******************************************************************************/
#ifndef _MBUF_H_
#define _MBUF_H_
#include "MotTypes.h"
#define MBUF_NOTEMPTY 0x0001
/*
* MBUF - Type definition of an MBuf structure. All network frames are stored
* and processed using MBufs.
*/
typedef struct MBUF
{
INT16 status;
INT16 len; /* this MBuf len (in bytes) */
UINT8 *working_ptr;
UINT8 *data;
} MBUF;
/* mBUFTOPTR - Return mBuf's data pointer casted to type t. */
#define mBUFTOPTR(n, t) ((t)((n)))
/***************** A P I **************************/
extern void mBufInit (void);
extern INT16 mENQUEUE (MBUF *m);
extern MBUF* mDEQUEUE (void);
#endif
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