lcp.h

来自「IXP425的BSP代码」· C头文件 代码 · 共 100 行

/* lcp.h - Link Control Protocol header */

/* Copyright 1995 Wind River Systems, Inc. */

/*
 * Copyright (c) 1989 Carnegie Mellon University.
 * All rights reserved.
 *
 * 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 Carnegie Mellon University.  The name of the
 * University 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.
 */

/*
modification history
--------------------
01a,16jan95,dzb  WRS-ize.
*/

#ifndef	__INClcph
#define	__INClcph

#ifdef  __cplusplus
extern "C" {
#endif

/*
 * Options.
 */
#define CI_MRU		1	/* Maximum Receive Unit */
#define CI_ASYNCMAP	2	/* Async Control Character Map */
#define CI_AUTHTYPE	3	/* Authentication Type */
#define CI_QUALITY	4	/* Quality Protocol */
#define CI_MAGICNUMBER	5	/* Magic Number */
#define CI_PCOMPRESSION	7	/* Protocol Field Compression */
#define CI_ACCOMPRESSION 8	/* Address/Control Field Compression */

/*
 * LCP-specific packet types.
 */
#define PROTREJ         8       /* Protocol Reject */
#define ECHOREQ         9       /* Echo Request */
#define ECHOREP         10      /* Echo Reply */
#define DISCREQ         11      /* Discard Request */

/*
 * The state of options is described by an lcp_options structure.
 */
typedef struct lcp_options {
    int passive : 1;		/* Don't die if we don't get a response */
    int silent : 1;		/* Wait for the other end to start first */
    int restart : 1;		/* Restart vs. exit after close */
    int neg_mru : 1;		/* Negotiate the MRU? */
    int neg_asyncmap : 1;	/* Negotiate the async map? */
    int neg_upap : 1;		/* Ask for UPAP authentication? */
    int neg_chap : 1;		/* Ask for CHAP authentication? */
    int neg_magicnumber : 1;	/* Ask for magic number? */
    int neg_pcompression : 1;	/* HDLC Protocol Field Compression? */
    int neg_accompression : 1;	/* HDLC Address/Control Field Compression? */
    int neg_lqr : 1;		/* Negotiate use of Link Quality Reports */
    u_short mru;		/* Value of MRU */
    u_char chap_mdtype;		/* which MD type (hashing algorithm) */
    u_long asyncmap;		/* Value of async map */
    u_long magicnumber;
    int numloops;		/* Number of loops during magic number neg. */
    u_long lqr_period;		/* Reporting period for link quality */
} lcp_options;

#define DEFMRU	1500		/* Try for this */
#define MINMRU	128		/* No MRUs below this */
#define MAXMRU	16384		/* Normally limit MRU to this */

extern void lcp_init __ARGS((int));
extern void lcp_open __ARGS((int));
extern void lcp_close __ARGS((int));
extern void lcp_lowerup __ARGS((int));
extern void lcp_lowerdown __ARGS((int));
extern void lcp_input __ARGS((int, u_char *, int));
extern void lcp_protrej __ARGS((int));
extern void lcp_sprotrej __ARGS((int, u_char *, int));
extern int  lcp_printpkt __ARGS((u_char *, int,
                          void (*) __ARGS((void *, char *, ...)), void *));

extern int lcp_warnloops;	/* Warn about a loopback this often */
#define DEFWARNLOOPS	10	/* Default value for above */

#ifdef  __cplusplus
}
#endif

#endif	/* __INClcph */