vjcdefs.h

来自「用于嵌入式系统的TCP/IP协议栈及若干服务」· C头文件 代码 · 共 47 行

/*
*            Copyright (c) 1998-2001 by NETsilicon Inc.
*
*  This software is copyrighted by and is the sole property of
*  NETsilicon.  All rights, title, ownership, or other interests
*  in the software remain the property of NETsilicon.  This
*  software may only be used in accordance with the corresponding
*  license agreement.  Any unauthorized use, duplication, transmission,
*  distribution, or disclosure of this software is expressly forbidden.
*
*  This Copyright notice may not be removed or modified without prior
*  written consent of NETsilicon.
*
*  NETsilicon, reserves the right to modify this software
*  without notice.
*
*  NETsilicon
*  411 Waverley Oaks Road                  USA 781.647.1234
*  Suite 227                               http://www.netsilicon.com
*  Waltham, MA 02452                       [e-mail]
*
*************************************************************************
*  $Name: Fusion 6.52 Fusion 6.51 $
*  $Date: 2001/09/20 10:25:00 $
*  $Source: M:/psisrc/ppp/incl/rcs/vjcdefs.h $
*  $Revision: 1.3 $
*************************************************************************
*  File Description:  Header file for routines that call VJ compression
*
**************************************************************************/

#ifndef _VJCDEFS_H
#define _VJCDEFS_H

#define MAX_STATES      16      /* must be >2 and <255 */
#define MAX_HDR         128     /* max TCP+IP hdr length (by protocol def) */

/* packet types */
#define TYPE_IP                 0x40
#define TYPE_UNCOMPRESSED_TCP   0x70
#define TYPE_COMPRESSED_TCP     0x80
#define TYPE_ERROR              0x00 /* this is not a type that ever appears 
                                      * on the wire.  The receive framer uses 
                                      * it to tell the decompressor there 
                                      * was a packet transmission error. */
#endif  /* _VJCDEFS_H */