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/*!\file net/ppp_defs.h |
* PPP definitions. |
*/ |
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/* $Id: ppp_defs.h,v 1.11 1997/04/30 05:46:24 paulus Exp $ */ |
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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. |
*/ |
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#ifndef __NET_PPP_DEFS_H |
#define __NET_PPP_DEFS_H |
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/* |
* The basic PPP frame. |
*/ |
#define PPP_HDRLEN 4 /* octets for standard ppp header */ |
#define PPP_FCSLEN 2 /* octets for FCS */ |
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/* |
* Packet sizes |
* |
* Note - lcp shouldn't be allowed to negotiate stuff outside these |
* limits. See lcp.h in the pppd directory. |
* (XXX - these constants should simply be shared by lcp.c instead |
* of living in lcp.h) |
*/ |
#define PPP_MTU 1500 /* Default MTU (size of Info field) */ |
#define PPP_MAXMTU 65535 - (PPP_HDRLEN + PPP_FCSLEN) |
#define PPP_MINMTU 64 |
#define PPP_MRU 1500 /* default MRU = max length of info field */ |
#define PPP_MAXMRU 65000 /* Largest MRU we allow */ |
#define PPP_MINMRU 128 |
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#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]) |
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/* |
* 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 0x0021 /* Raw IP */ |
#define PPP_OSI 0x0023 /* OSI Network Layer */ |
#define PPP_NS 0x0025 /* Xerox NS IDP */ |
#define PPP_DECNET 0x0027 /* DECnet Phase IV */ |
#define PPP_APPLE 0x0029 /* Appletalk */ |
#define PPP_IPX 0x002b /* Novell IPX */ |
#define PPP_VJC 0x002d /* Van Jacobson Compressed TCP/IP */ |
#define PPP_VJNC 0x002f /* Van Jacobson Uncompressed TCP/IP */ |
#define PPP_VJC_COMP PPP_VJC |
#define PPP_VJC_UNCOMP PPP_VJNC |
#define PPP_BRPDU 0x0031 /* Bridging PDU */ |
#define PPP_STII 0x0033 /* Stream Protocol (ST-II) */ |
#define PPP_VINES 0x0035 /* Banyan Vines */ |
#define PPP_IPV6 0x0057 /* Internet Protocol Version 6 */ |
#define PPP_COMP 0x00fd /* compressed packet */ |
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#define PPP_HELLO 0x0201 /* 802.1d Hello Packets */ |
#define PPP_LUXCOM 0x0231 /* Luxcom */ |
#define PPP_SNS 0x0233 /* Sigma Network Systems */ |
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#define PPP_IPCP 0x8021 /* IP Control Protocol */ |
#define PPP_OSICP 0x8023 /* OSI Network Layer Control Protocol */ |
#define PPP_NSCP 0x8025 /* Xerox NS IDP Control Protocol */ |
#define PPP_DECNETCP 0x8027 /* DECnet Control Protocol */ |
#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ |
#define PPP_IPXCP 0x802b /* IPX Control Protocol */ |
#define PPP_STIICP 0x8033 /* Strean Protocol Control Protocol */ |
#define PPP_VINESCP 0x8035 /* Banyan Vines Control Protocol */ |
#define PPP_CCP 0x80fd /* Compression Control Protocol */ |
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#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 */ |
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/* |
* 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]) |
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/* |
* A 32-bit unsigned integral type. |
*/ |
#if !defined(__BIT_TYPES_DEFINED__) && !defined(_BITYPES) && !defined(__SYS_WTYPES_H) |
#ifdef UINT32_T |
typedef UINT32_T u_int32_t; |
#else |
typedef unsigned long u_int32_t; |
#endif |
#endif |
|
/* |
* 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 */ |
}; |
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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 */ |
}; |
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struct ppp_stats { |
struct pppstat p; /* basic PPP statistics */ |
struct vjstat vj; /* VJ header compression statistics */ |
}; |
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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 */ |
}; |
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struct ppp_comp_stats { |
struct compstat c; /* packet compression statistics */ |
struct compstat d; /* packet decompression statistics */ |
}; |
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/* |
* 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 */ |
}; |
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#endif |