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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [net/] [ppp_defs.h] - Blame information for rev 173

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/*      $Id: ppp_defs.h,v 1.2 2001-09-27 12:01:54 chris Exp $   */
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/*
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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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#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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/*
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 * Packet sizes
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 *
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 * Note - lcp shouldn't be allowed to negotiate stuff outside these
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 *        limits.  See lcp.h in the pppd directory.
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 * (XXX - these constants should simply be shared by lcp.c instead
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 *        of living in lcp.h)
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 */
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#define PPP_MTU         1500    /* Default MTU (size of Info field) */
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#define PPP_MAXMTU      65535 - (PPP_HDRLEN + PPP_FCSLEN)
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#define PPP_MINMTU      64
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#define PPP_MRU         1500    /* default MRU = max length of info field */
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#define PPP_MAXMRU      65000   /* Largest MRU we allow */
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#define PPP_MINMRU      128
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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_AT          0x29    /* AppleTalk Protocol */
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#define PPP_IPX         0x2b    /* IPX protocol */
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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_IPV6        0x57    /* Internet Protocol Version 6 */
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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 */
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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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 * A 32-bit unsigned integral type.
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 */
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#if !defined(__BIT_TYPES_DEFINED__) && !defined(_BITYPES) \
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 && !defined(__FreeBSD__) && (NS_TARGET < 40) && !defined(__rtems__)
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#ifdef  UINT32_T
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typedef UINT32_T        u_int32_t;
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#else
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typedef unsigned int    u_int32_t;
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typedef unsigned short  u_int16_t;
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#endif
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#endif
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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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