69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/*
|
|
* Written by Toshiharu OHNO (tony-o@iij.ad.jp)
|
|
*
|
|
* Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that the above copyright notice and this paragraph are
|
|
* duplicated in all such forms and that any documentation,
|
|
* advertising materials, and other materials related to such
|
|
* distribution and use acknowledge that the software was developed
|
|
* by the Internet Initiative Japan. The name of the
|
|
* IIJ may not be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
* $Id: hdlc.h,v 1.12 1997/11/22 03:37:33 brian Exp $
|
|
*
|
|
* TODO:
|
|
*/
|
|
|
|
/*
|
|
* Definition for Async HDLC
|
|
*/
|
|
#define HDLC_SYN 0x7e /* SYNC character */
|
|
#define HDLC_ESC 0x7d /* Escape character */
|
|
#define HDLC_XOR 0x20 /* Modifier value */
|
|
|
|
#define HDLC_ADDR 0xff
|
|
#define HDLC_UI 0x03
|
|
/*
|
|
* Definition for HDLC Frame Check Sequence
|
|
*/
|
|
#define INITFCS 0xffff /* Initial value for FCS computation */
|
|
#define GOODFCS 0xf0b8 /* Good FCS value */
|
|
|
|
#define DEF_MRU 1500
|
|
#define MAX_MRU 2048
|
|
#define MIN_MRU 296
|
|
|
|
#define DEF_MTU 0 /* whatever peer says */
|
|
#define MAX_MTU 2048
|
|
#define MIN_MTU 296
|
|
|
|
/*
|
|
* Output priority
|
|
*/
|
|
/* PRI_NORMAL and PRI_FAST have meaning only on the IP queue.
|
|
* All IP frames have the same priority once they are compressed.
|
|
* IP frames stay on the IP queue till they can be sent on the
|
|
* link. They are compressed at that time.
|
|
*/
|
|
#define PRI_NORMAL 0 /* Normal priority */
|
|
#define PRI_FAST 1 /* Fast (interractive) */
|
|
#define PRI_LINK 1 /* Urgent (LQR packets) */
|
|
|
|
extern u_char EscMap[33];
|
|
|
|
extern void HdlcInit(void);
|
|
extern void HdlcErrorCheck(void);
|
|
extern void HdlcInput(struct mbuf *);
|
|
extern void HdlcOutput(int, u_short, struct mbuf *bp);
|
|
extern u_short HdlcFcs(u_short, u_char *, int);
|
|
extern u_short HdlcFcsBuf(u_short, struct mbuf *);
|
|
extern void DecodePacket(u_short, struct mbuf *);
|
|
extern int ReportHdlcStatus(struct cmdargs const *);
|
|
extern int ReportProtStatus(struct cmdargs const *);
|