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/*
* ppp_defs.h - PPP definitions.
*
* Copyright (c) 1994 The Australian National University.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation is hereby granted, provided that the above copyright
* notice appears in all copies. This software is provided without any
* warranty, express or implied. The Australian National University
* makes no representations about the suitability of this software for
* any purpose.
*
* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
* OR MODIFICATIONS.
*
* $FreeBSD$
*/
#ifndef _PPP_DEFS_H_
#define _PPP_DEFS_H_
/*
* The basic PPP frame.
*/
#define PPP_HDRLEN 4 /* octets for standard ppp header */
#define PPP_FCSLEN 2 /* octets for FCS */
#define PPP_MRU 1500 /* default MRU = max length of info field */
#define PPP_ADDRESS(p) (((u_char *)(p))[0])
#define PPP_CONTROL(p) (((u_char *)(p))[1])
#define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
/*
* Significant octet values.
*/
#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
#define PPP_UI 0x03 /* Unnumbered Information */
#define PPP_FLAG 0x7e /* Flag Sequence */
#define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */
#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
/*
* Protocol field values.
*/
#define PPP_IP 0x21 /* Internet Protocol */
#define PPP_XNS 0x25 /* Xerox NS */
#define PPP_AT 0x29 /* AppleTalk Protocol */
#define PPP_IPX 0x2b /* IPX Datagram (RFC1552) */
#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
#define PPP_COMP 0xfd /* compressed packet */
#define PPP_IPCP 0x8021 /* IP Control Protocol */
#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */
#define PPP_IPXCP 0x802b /* IPX Control Protocol (RFC1552) */
#define PPP_CCP 0x80fd /* Compression Control Protocol */
#define PPP_LCP 0xc021 /* Link Control Protocol */
#define PPP_PAP 0xc023 /* Password Authentication Protocol */
#define PPP_LQR 0xc025 /* Link Quality Report protocol */
#define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */
#define PPP_CBCP 0xc029 /* Callback Control Protocol */
#define PPP_IPV6 0x57 /* Internet Protocol version 6*/
#define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */
/*
* Values for FCS calculations.
*/
#define PPP_INITFCS 0xffff /* Initial FCS value */
#define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
#define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
/*
* Extended asyncmap - allows any character to be escaped.
*/
typedef u_int32_t ext_accm[8];
/*
* What to do with network protocol (NP) packets.
*/
enum NPmode {
NPMODE_PASS, /* pass the packet through */
NPMODE_DROP, /* silently drop the packet */
NPMODE_ERROR, /* return an error */
NPMODE_QUEUE /* save it up for later. */
};
/*
* Statistics.
*/
struct pppstat {
unsigned int ppp_ibytes; /* bytes received */
unsigned int ppp_ipackets; /* packets received */
unsigned int ppp_ierrors; /* receive errors */
unsigned int ppp_obytes; /* bytes sent */
unsigned int ppp_opackets; /* packets sent */
unsigned int ppp_oerrors; /* transmit errors */
};
struct vjstat {
unsigned int vjs_packets; /* outbound packets */
unsigned int vjs_compressed; /* outbound compressed packets */
unsigned int vjs_searches; /* searches for connection state */
unsigned int vjs_misses; /* times couldn't find conn. state */
unsigned int vjs_uncompressedin; /* inbound uncompressed packets */
unsigned int vjs_compressedin; /* inbound compressed packets */
unsigned int vjs_errorin; /* inbound unknown type packets */
unsigned int vjs_tossed; /* inbound packets tossed because of error */
};
struct ppp_stats {
struct pppstat p; /* basic PPP statistics */
struct vjstat vj; /* VJ header compression statistics */
};
struct compstat {
unsigned int unc_bytes; /* total uncompressed bytes */
unsigned int unc_packets; /* total uncompressed packets */
unsigned int comp_bytes; /* compressed bytes */
unsigned int comp_packets; /* compressed packets */
unsigned int inc_bytes; /* incompressible bytes */
unsigned int inc_packets; /* incompressible packets */
unsigned int ratio; /* recent compression ratio << 8 */
};
struct ppp_comp_stats {
struct compstat c; /* packet compression statistics */
struct compstat d; /* packet decompression statistics */
};
/*
* The following structure records the time in seconds since
* the last NP packet was sent or received.
*/
struct ppp_idle {
time_t xmit_idle; /* time since last NP packet sent */
time_t recv_idle; /* time since last NP packet received */
};
#ifndef __P
#ifdef __STDC__
#define __P(x) x
#else
#define __P(x) ()
#endif
#endif
#endif /* _PPP_DEFS_H_ */
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