/* $NetBSD: ppp_defs.h,v 1.13 2008/02/20 17:05:53 matt Exp $ */ /* Id: ppp_defs.h,v 1.11 1997/04/30 05:46:24 paulus Exp */ /* * ppp_defs.h - PPP definitions. * * Copyright (c) 1989-2002 Paul Mackerras. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The name(s) of the authors of this software must not be used to * endorse or promote products derived from this software without * prior written permission. * * 4. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by Paul Mackerras * ". * * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef _NET_PPP_DEFS_H_ #define _NET_PPP_DEFS_H_ /* * The basic PPP frame. */ #define PPP_HDRLEN 4 /* octets for standard ppp header */ #define PPP_FCSLEN 2 /* octets for FCS */ /* * 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 #define PPP_ADDRESS(p) (((const u_char *)(p))[0]) #define PPP_CONTROL(p) (((const u_char *)(p))[1]) #define PPP_PROTOCOL(p) \ ((((const u_char *)(p))[2] << 8) + ((const u_char *)(p))[3]) /* * 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 /* Internet Protocol */ #define PPP_ISO 0x0023 /* ISO OSI Protocol */ #define PPP_XNS 0x0025 /* Xerox NS Protocol */ #define PPP_AT 0x0029 /* AppleTalk Protocol */ #define PPP_IPX 0x002b /* IPX protocol */ #define PPP_VJC_COMP 0x002d /* VJ compressed TCP */ #define PPP_VJC_UNCOMP 0x002f /* VJ uncompressed TCP */ #define PPP_IPV6 0x0057 /* Internet Protocol Version 6 */ #define PPP_COMP 0x00fd /* compressed packet */ #define PPP_IPCP 0x8021 /* IP Control Protocol */ #define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ #define PPP_IPXCP 0x802b /* IPX Control Protocol */ #define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ #define PPP_CCP 0x80fd /* Compression Control Protocol */ #define PPP_ECP 0x8053 /* Encryption Control Protocol */ #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 /* Crypto Handshake Auth. Protocol */ #define PPP_CBCP 0xc029 /* Callback Control Protocol */ #define PPP_EAP 0xc227 /* Extensible Authentication Protocol */ /* * 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]) /* * Extended asyncmap - allows any character to be escaped. */ typedef uint32_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 */ }; 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 */ }; struct ppp_stats { struct pppstat p; /* basic PPP statistics */ struct vjstat vj; /* VJ header compression statistics */ }; 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 */ }; struct ppp_comp_stats { struct compstat c; /* packet compression statistics */ struct compstat d; /* packet decompression statistics */ }; /* * 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 */ }; #endif /* !_NET_PPP_DEFS_H_ */