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| /*!\file net/ppp_defs.h |
| * PPP definitions. |
| */ |
| |
| /* $Id: ppp_defs.h,v 1.11 1997/04/30 05:46:24 paulus Exp $ */ |
| |
| /* |
| * 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. |
| */ |
| |
| #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) (((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]) |
| |
| /* |
| * 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 */ |
| |
| #define PPP_HELLO 0x0201 /* 802.1d Hello Packets */ |
| #define PPP_LUXCOM 0x0231 /* Luxcom */ |
| #define PPP_SNS 0x0233 /* Sigma Network Systems */ |
| |
| #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 */ |
| |
| #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 */ |
| |
| /* |
| * 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]) |
| |
| /* |
| * 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 */ |
| }; |
| |
| 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 |