sys/net/ppp.h

/*
 * ppp.h - PPP global declarations.
 *
 * 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.
 *
 * $Id: ppp.h,v 1.1 1994/03/30 09:38:17 jkh Exp $
 */

#ifndef __PPP_H__
#define __PPP_H__

#define _NPPP   1               /* One PPP interface supported (per process) */

/*
 * Data Link Layer header = Address, Control, Protocol.
 */
#define ALLSTATIONS     0xff    /* All-Stations Address */
#define UI              0x03    /* Unnumbered Information */
#define LCP             0xc021  /* Link Control Protocol */
#define IPCP            0x8021  /* IP Control Protocol */
#define UPAP            0xc023  /* User/Password Authentication Protocol */
#define CHAP            0xc223  /* Crytpographic Handshake Protocol */
#define LQR             0xc025  /* Link Quality Report protocol */
#define IP_VJ_COMP      0x002d  /* VJ TCP compressed IP packet */
#define DLLHEADERLEN    (sizeof (u_char) + sizeof (u_char) + sizeof (u_short))
#define MTU             1500    /* Default MTU */

#endif /* __PPP_H__ */