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jeremybenn |
/*
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* ppp_defs.h - PPP definitions.
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*
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* Copyright (c) 1994 The Australian National University.
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, provided that the above copyright
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* notice appears in all copies. This software is provided without any
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* warranty, express or implied. The Australian National University
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* makes no representations about the suitability of this software for
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* any purpose.
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*
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* IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
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* PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
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* THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
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* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
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* OR MODIFICATIONS.
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*
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* $FreeBSD: src/sys/net/ppp_defs.h,v 1.7 2001/06/11 12:38:58 ume Exp $
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*/
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#ifndef _PPP_DEFS_H_
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#define _PPP_DEFS_H_
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/*
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* The basic PPP frame.
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*/
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#define PPP_HDRLEN 4 /* octets for standard ppp header */
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#define PPP_FCSLEN 2 /* octets for FCS */
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#define PPP_MRU 1500 /* default MRU = max length of info field */
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#define PPP_ADDRESS(p) (((u_char *)(p))[0])
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#define PPP_CONTROL(p) (((u_char *)(p))[1])
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#define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
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/*
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* Significant octet values.
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*/
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#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
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#define PPP_UI 0x03 /* Unnumbered Information */
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#define PPP_FLAG 0x7e /* Flag Sequence */
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#define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */
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#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
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/*
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* Protocol field values.
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*/
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#define PPP_IP 0x21 /* Internet Protocol */
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#define PPP_XNS 0x25 /* Xerox NS */
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#define PPP_AT 0x29 /* AppleTalk Protocol */
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#define PPP_IPX 0x2b /* IPX Datagram (RFC1552) */
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#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
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#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
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#define PPP_COMP 0xfd /* compressed packet */
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#define PPP_IPCP 0x8021 /* IP Control Protocol */
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#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */
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#define PPP_IPXCP 0x802b /* IPX Control Protocol (RFC1552) */
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#define PPP_CCP 0x80fd /* Compression Control Protocol */
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#define PPP_LCP 0xc021 /* Link Control Protocol */
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#define PPP_PAP 0xc023 /* Password Authentication Protocol */
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#define PPP_LQR 0xc025 /* Link Quality Report protocol */
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#define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */
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#define PPP_CBCP 0xc029 /* Callback Control Protocol */
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#define PPP_IPV6 0x57 /* Internet Protocol version 6*/
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#define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */
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/*
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* Values for FCS calculations.
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*/
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#define PPP_INITFCS 0xffff /* Initial FCS value */
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#define PPP_GOODFCS 0xf0b8 /* Good final FCS value */
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#define PPP_FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
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/*
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* Extended asyncmap - allows any character to be escaped.
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*/
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typedef u_int32_t ext_accm[8];
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/*
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* What to do with network protocol (NP) packets.
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*/
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enum NPmode {
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NPMODE_PASS, /* pass the packet through */
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NPMODE_DROP, /* silently drop the packet */
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NPMODE_ERROR, /* return an error */
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NPMODE_QUEUE /* save it up for later. */
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};
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/*
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* Statistics.
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*/
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struct pppstat {
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unsigned int ppp_ibytes; /* bytes received */
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unsigned int ppp_ipackets; /* packets received */
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unsigned int ppp_ierrors; /* receive errors */
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unsigned int ppp_obytes; /* bytes sent */
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unsigned int ppp_opackets; /* packets sent */
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unsigned int ppp_oerrors; /* transmit errors */
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};
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struct vjstat {
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unsigned int vjs_packets; /* outbound packets */
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unsigned int vjs_compressed; /* outbound compressed packets */
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unsigned int vjs_searches; /* searches for connection state */
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unsigned int vjs_misses; /* times couldn't find conn. state */
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unsigned int vjs_uncompressedin; /* inbound uncompressed packets */
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unsigned int vjs_compressedin; /* inbound compressed packets */
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unsigned int vjs_errorin; /* inbound unknown type packets */
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unsigned int vjs_tossed; /* inbound packets tossed because of error */
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};
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struct ppp_stats {
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struct pppstat p; /* basic PPP statistics */
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struct vjstat vj; /* VJ header compression statistics */
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};
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struct compstat {
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unsigned int unc_bytes; /* total uncompressed bytes */
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unsigned int unc_packets; /* total uncompressed packets */
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unsigned int comp_bytes; /* compressed bytes */
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unsigned int comp_packets; /* compressed packets */
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unsigned int inc_bytes; /* incompressible bytes */
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unsigned int inc_packets; /* incompressible packets */
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unsigned int ratio; /* recent compression ratio << 8 */
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};
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struct ppp_comp_stats {
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struct compstat c; /* packet compression statistics */
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struct compstat d; /* packet decompression statistics */
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};
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/*
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* The following structure records the time in seconds since
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* the last NP packet was sent or received.
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*/
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struct ppp_idle {
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time_t xmit_idle; /* time since last NP packet sent */
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time_t recv_idle; /* time since last NP packet received */
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};
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#ifndef __P
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#ifdef __STDC__
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#define __P(x) x
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#else
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#define __P(x) ()
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#endif
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#endif
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#endif /* _PPP_DEFS_H_ */
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