177 lines
6.3 KiB
C
177 lines
6.3 KiB
C
/* $NetBSD: ppp_defs.h,v 1.13 2008/02/20 17:05:53 matt Exp $ */
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/* Id: ppp_defs.h,v 1.11 1997/04/30 05:46:24 paulus Exp */
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/*
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* ppp_defs.h - PPP definitions.
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*
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* Copyright (c) 1989-2002 Paul Mackerras. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The name(s) of the authors of this software must not be used to
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* endorse or promote products derived from this software without
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* prior written permission.
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*
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* 4. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by Paul Mackerras
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* <paulus@samba.org>".
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*
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* THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
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* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _NET_PPP_DEFS_H_
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#define _NET_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) (((const u_char *)(p))[0])
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#define PPP_CONTROL(p) (((const u_char *)(p))[1])
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#define PPP_PROTOCOL(p) \
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((((const u_char *)(p))[2] << 8) + ((const 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 0x0021 /* Internet Protocol */
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#define PPP_ISO 0x0023 /* ISO OSI Protocol */
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#define PPP_XNS 0x0025 /* Xerox NS Protocol */
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#define PPP_AT 0x0029 /* AppleTalk Protocol */
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#define PPP_IPX 0x002b /* IPX protocol */
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#define PPP_VJC_COMP 0x002d /* VJ compressed TCP */
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#define PPP_VJC_UNCOMP 0x002f /* VJ uncompressed TCP */
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#define PPP_IPV6 0x0057 /* Internet Protocol Version 6 */
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#define PPP_COMP 0x00fd /* 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_IPV6CP 0x8057 /* IPv6 Control Protocol */
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#define PPP_CCP 0x80fd /* Compression Control Protocol */
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#define PPP_ECP 0x8053 /* Encryption 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 /* Crypto Handshake Auth. Protocol */
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#define PPP_CBCP 0xc029 /* Callback Control Protocol */
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#define PPP_EAP 0xc227 /* Extensible Authentication 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 uint32_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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#endif /* !_NET_PPP_DEFS_H_ */
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