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      1  1.14        is /*	$NetBSD: ppp_defs.h,v 1.14 2020/04/04 19:46:01 is Exp $	*/
      2   1.3  christos /*	Id: ppp_defs.h,v 1.11 1997/04/30 05:46:24 paulus Exp 	*/
      3   1.1    paulus 
      4   1.1    paulus /*
      5   1.1    paulus  * ppp_defs.h - PPP definitions.
      6   1.1    paulus  *
      7   1.8    itojun  * Copyright (c) 1989-2002 Paul Mackerras. All rights reserved.
      8   1.1    paulus  *
      9   1.8    itojun  * Redistribution and use in source and binary forms, with or without
     10   1.8    itojun  * modification, are permitted provided that the following conditions
     11   1.8    itojun  * are met:
     12   1.8    itojun  *
     13   1.8    itojun  * 1. Redistributions of source code must retain the above copyright
     14   1.8    itojun  *    notice, this list of conditions and the following disclaimer.
     15   1.8    itojun  *
     16   1.8    itojun  * 2. Redistributions in binary form must reproduce the above copyright
     17   1.8    itojun  *    notice, this list of conditions and the following disclaimer in
     18   1.8    itojun  *    the documentation and/or other materials provided with the
     19   1.8    itojun  *    distribution.
     20   1.8    itojun  *
     21   1.8    itojun  * 3. The name(s) of the authors of this software must not be used to
     22   1.8    itojun  *    endorse or promote products derived from this software without
     23   1.8    itojun  *    prior written permission.
     24   1.8    itojun  *
     25   1.8    itojun  * 4. Redistributions of any form whatsoever must retain the following
     26   1.8    itojun  *    acknowledgment:
     27   1.8    itojun  *    "This product includes software developed by Paul Mackerras
     28   1.8    itojun  *     <paulus (at) samba.org>".
     29   1.8    itojun  *
     30   1.8    itojun  * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
     31   1.8    itojun  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
     32   1.8    itojun  * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
     33   1.8    itojun  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     34   1.8    itojun  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
     35   1.8    itojun  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
     36   1.8    itojun  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     37   1.1    paulus  */
     38   1.1    paulus 
     39   1.4     perry #ifndef _NET_PPP_DEFS_H_
     40   1.4     perry #define _NET_PPP_DEFS_H_
     41   1.1    paulus 
     42   1.1    paulus /*
     43   1.1    paulus  * The basic PPP frame.
     44   1.1    paulus  */
     45   1.1    paulus #define PPP_HDRLEN	4	/* octets for standard ppp header */
     46   1.1    paulus #define PPP_FCSLEN	2	/* octets for FCS */
     47   1.3  christos 
     48   1.3  christos /*
     49   1.3  christos  * Packet sizes
     50   1.3  christos  *
     51   1.3  christos  * Note - lcp shouldn't be allowed to negotiate stuff outside these
     52   1.3  christos  *	  limits.  See lcp.h in the pppd directory.
     53   1.3  christos  * (XXX - these constants should simply be shared by lcp.c instead
     54   1.3  christos  *	  of living in lcp.h)
     55   1.3  christos  */
     56   1.3  christos #define	PPP_MTU		1500	/* Default MTU (size of Info field) */
     57   1.3  christos #define PPP_MAXMTU	65535 - (PPP_HDRLEN + PPP_FCSLEN)
     58   1.3  christos #define PPP_MINMTU	64
     59   1.1    paulus #define PPP_MRU		1500	/* default MRU = max length of info field */
     60   1.3  christos #define PPP_MAXMRU	65000	/* Largest MRU we allow */
     61   1.3  christos #define PPP_MINMRU	128
     62   1.1    paulus 
     63  1.12    dyoung #define PPP_ADDRESS(p)	(((const u_char *)(p))[0])
     64  1.12    dyoung #define PPP_CONTROL(p)	(((const u_char *)(p))[1])
     65  1.12    dyoung #define PPP_PROTOCOL(p)	\
     66  1.12    dyoung     ((((const u_char *)(p))[2] << 8) + ((const u_char *)(p))[3])
     67   1.1    paulus 
     68   1.1    paulus /*
     69   1.1    paulus  * Significant octet values.
     70   1.1    paulus  */
     71   1.1    paulus #define	PPP_ALLSTATIONS	0xff	/* All-Stations broadcast address */
     72   1.1    paulus #define	PPP_UI		0x03	/* Unnumbered Information */
     73   1.1    paulus #define	PPP_FLAG	0x7e	/* Flag Sequence */
     74   1.1    paulus #define	PPP_ESCAPE	0x7d	/* Asynchronous Control Escape */
     75   1.1    paulus #define	PPP_TRANS	0x20	/* Asynchronous transparency modifier */
     76   1.1    paulus 
     77   1.1    paulus /*
     78   1.1    paulus  * Protocol field values.
     79   1.1    paulus  */
     80   1.7  sommerfe #define PPP_IP		0x0021		/* Internet Protocol */
     81   1.7  sommerfe #define PPP_ISO		0x0023		/* ISO OSI Protocol */
     82   1.7  sommerfe #define PPP_XNS		0x0025		/* Xerox NS Protocol */
     83   1.7  sommerfe #define PPP_AT		0x0029		/* AppleTalk Protocol */
     84   1.7  sommerfe #define PPP_IPX		0x002b		/* IPX protocol */
     85   1.7  sommerfe #define	PPP_VJC_COMP	0x002d		/* VJ compressed TCP */
     86   1.7  sommerfe #define	PPP_VJC_UNCOMP	0x002f		/* VJ uncompressed TCP */
     87  1.14        is #define PPP_MP		0x003d		/* Multilink PPP Fragment */
     88   1.7  sommerfe #define PPP_IPV6	0x0057		/* Internet Protocol Version 6 */
     89   1.7  sommerfe #define PPP_COMP	0x00fd		/* compressed packet */
     90   1.7  sommerfe #define PPP_IPCP	0x8021		/* IP Control Protocol */
     91   1.7  sommerfe #define PPP_ATCP	0x8029		/* AppleTalk Control Protocol */
     92   1.7  sommerfe #define PPP_IPXCP	0x802b		/* IPX Control Protocol */
     93   1.7  sommerfe #define PPP_IPV6CP	0x8057		/* IPv6 Control Protocol */
     94   1.7  sommerfe #define PPP_CCP		0x80fd		/* Compression Control Protocol */
     95  1.10      cube #define PPP_ECP		0x8053		/* Encryption Control Protocol */
     96   1.7  sommerfe #define PPP_LCP		0xc021		/* Link Control Protocol */
     97   1.7  sommerfe #define PPP_PAP		0xc023		/* Password Authentication Protocol */
     98   1.7  sommerfe #define PPP_LQR		0xc025		/* Link Quality Report protocol */
     99   1.7  sommerfe #define PPP_CHAP	0xc223		/* Crypto Handshake Auth. Protocol */
    100   1.7  sommerfe #define PPP_CBCP	0xc029		/* Callback Control Protocol */
    101  1.10      cube #define PPP_EAP		0xc227		/* Extensible Authentication Protocol */
    102   1.1    paulus 
    103   1.1    paulus /*
    104   1.1    paulus  * Values for FCS calculations.
    105   1.1    paulus  */
    106   1.1    paulus #define PPP_INITFCS	0xffff	/* Initial FCS value */
    107   1.1    paulus #define PPP_GOODFCS	0xf0b8	/* Good final FCS value */
    108   1.1    paulus #define PPP_FCS(fcs, c)	(((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
    109   1.1    paulus 
    110   1.1    paulus /*
    111   1.1    paulus  * Extended asyncmap - allows any character to be escaped.
    112   1.1    paulus  */
    113  1.13      matt typedef uint32_t	ext_accm[8];
    114   1.1    paulus 
    115   1.1    paulus /*
    116   1.1    paulus  * What to do with network protocol (NP) packets.
    117   1.1    paulus  */
    118   1.1    paulus enum NPmode {
    119   1.1    paulus     NPMODE_PASS,		/* pass the packet through */
    120   1.1    paulus     NPMODE_DROP,		/* silently drop the packet */
    121   1.1    paulus     NPMODE_ERROR,		/* return an error */
    122   1.1    paulus     NPMODE_QUEUE		/* save it up for later. */
    123   1.1    paulus };
    124   1.1    paulus 
    125   1.1    paulus /*
    126   1.1    paulus  * Statistics.
    127   1.1    paulus  */
    128   1.1    paulus struct pppstat	{
    129   1.2  christos     unsigned int ppp_ibytes;	/* bytes received */
    130   1.2  christos     unsigned int ppp_ipackets;	/* packets received */
    131   1.2  christos     unsigned int ppp_ierrors;	/* receive errors */
    132   1.2  christos     unsigned int ppp_obytes;	/* bytes sent */
    133   1.2  christos     unsigned int ppp_opackets;	/* packets sent */
    134   1.2  christos     unsigned int ppp_oerrors;	/* transmit errors */
    135   1.1    paulus };
    136   1.1    paulus 
    137   1.1    paulus struct vjstat {
    138   1.2  christos     unsigned int vjs_packets;	/* outbound packets */
    139   1.2  christos     unsigned int vjs_compressed; /* outbound compressed packets */
    140   1.2  christos     unsigned int vjs_searches;	/* searches for connection state */
    141   1.2  christos     unsigned int vjs_misses;	/* times couldn't find conn. state */
    142   1.2  christos     unsigned int vjs_uncompressedin; /* inbound uncompressed packets */
    143   1.2  christos     unsigned int vjs_compressedin; /* inbound compressed packets */
    144   1.2  christos     unsigned int vjs_errorin;	/* inbound unknown type packets */
    145   1.2  christos     unsigned int vjs_tossed;	/* inbound packets tossed because of error */
    146   1.1    paulus };
    147   1.1    paulus 
    148   1.1    paulus struct ppp_stats {
    149   1.2  christos     struct pppstat p;		/* basic PPP statistics */
    150   1.2  christos     struct vjstat vj;		/* VJ header compression statistics */
    151   1.1    paulus };
    152   1.1    paulus 
    153   1.1    paulus struct compstat {
    154   1.2  christos     unsigned int unc_bytes;	/* total uncompressed bytes */
    155   1.2  christos     unsigned int unc_packets;	/* total uncompressed packets */
    156   1.2  christos     unsigned int comp_bytes;	/* compressed bytes */
    157   1.2  christos     unsigned int comp_packets;	/* compressed packets */
    158   1.2  christos     unsigned int inc_bytes;	/* incompressible bytes */
    159   1.2  christos     unsigned int inc_packets;	/* incompressible packets */
    160   1.2  christos     unsigned int ratio;		/* recent compression ratio << 8 */
    161   1.1    paulus };
    162   1.1    paulus 
    163   1.1    paulus struct ppp_comp_stats {
    164   1.2  christos     struct compstat c;		/* packet compression statistics */
    165   1.2  christos     struct compstat d;		/* packet decompression statistics */
    166   1.1    paulus };
    167   1.1    paulus 
    168   1.1    paulus /*
    169   1.1    paulus  * The following structure records the time in seconds since
    170   1.1    paulus  * the last NP packet was sent or received.
    171   1.1    paulus  */
    172   1.1    paulus struct ppp_idle {
    173   1.1    paulus     time_t xmit_idle;		/* time since last NP packet sent */
    174   1.1    paulus     time_t recv_idle;		/* time since last NP packet received */
    175   1.1    paulus };
    176   1.1    paulus 
    177  1.11      elad #endif /* !_NET_PPP_DEFS_H_ */
    178