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2d4b190bc5
2.3.0 -> 2.3.1 changes, but I seem to recall that there are certain "issues" with 2.3.1 (I'm not sure if it's just pppd or the whole lot, I am not quite that far). The present pppd seems to work with it just fine for the time being. Among the changes are that zlib (aka LZ77 aka deflate aka gzip) compression is implemented as well as the original compress(1) LZW style.
156 lines
5.3 KiB
C
156 lines
5.3 KiB
C
/*
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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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* $Id$
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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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/*
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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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