1/* 2 * ppp_defs.h - PPP definitions. 3 * 4 * Copyright 1994-2000 Paul Mackerras. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * version 2 as published by the Free Software Foundation. 9 */ 10#include <linux/types.h> 11 12#ifndef _UAPI_PPP_DEFS_H_ 13#define _UAPI_PPP_DEFS_H_ 14 15/* 16 * The basic PPP frame. 17 */ 18#define PPP_HDRLEN 4 /* octets for standard ppp header */ 19#define PPP_FCSLEN 2 /* octets for FCS */ 20#define PPP_MRU 1500 /* default MRU = max length of info field */ 21 22#define PPP_ADDRESS(p) (((__u8 *)(p))[0]) 23#define PPP_CONTROL(p) (((__u8 *)(p))[1]) 24#define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(p))[3]) 25 26/* 27 * Significant octet values. 28 */ 29#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ 30#define PPP_UI 0x03 /* Unnumbered Information */ 31#define PPP_FLAG 0x7e /* Flag Sequence */ 32#define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */ 33#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */ 34 35/* 36 * Protocol field values. 37 */ 38#define PPP_IP 0x21 /* Internet Protocol */ 39#define PPP_AT 0x29 /* AppleTalk Protocol */ 40#define PPP_IPX 0x2b /* IPX protocol */ 41#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ 42#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ 43#define PPP_MP 0x3d /* Multilink protocol */ 44#define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ 45#define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */ 46#define PPP_COMP 0xfd /* compressed packet */ 47#define PPP_MPLS_UC 0x0281 /* Multi Protocol Label Switching - Unicast */ 48#define PPP_MPLS_MC 0x0283 /* Multi Protocol Label Switching - Multicast */ 49#define PPP_IPCP 0x8021 /* IP Control Protocol */ 50#define PPP_ATCP 0x8029 /* AppleTalk Control Protocol */ 51#define PPP_IPXCP 0x802b /* IPX Control Protocol */ 52#define PPP_IPV6CP 0x8057 /* IPv6 Control Protocol */ 53#define PPP_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */ 54#define PPP_CCP 0x80fd /* Compression Control Protocol */ 55#define PPP_MPLSCP 0x80fd /* MPLS Control Protocol */ 56#define PPP_LCP 0xc021 /* Link Control Protocol */ 57#define PPP_PAP 0xc023 /* Password Authentication Protocol */ 58#define PPP_LQR 0xc025 /* Link Quality Report protocol */ 59#define PPP_CHAP 0xc223 /* Cryptographic Handshake Auth. Protocol */ 60#define PPP_CBCP 0xc029 /* Callback Control Protocol */ 61 62/* 63 * Values for FCS calculations. 64 */ 65 66#define PPP_INITFCS 0xffff /* Initial FCS value */ 67#define PPP_GOODFCS 0xf0b8 /* Good final FCS value */ 68 69 70/* 71 * Extended asyncmap - allows any character to be escaped. 72 */ 73 74typedef __u32 ext_accm[8]; 75 76/* 77 * What to do with network protocol (NP) packets. 78 */ 79enum NPmode { 80 NPMODE_PASS, /* pass the packet through */ 81 NPMODE_DROP, /* silently drop the packet */ 82 NPMODE_ERROR, /* return an error */ 83 NPMODE_QUEUE /* save it up for later. */ 84}; 85 86/* 87 * Statistics for LQRP and pppstats 88 */ 89struct pppstat { 90 __u32 ppp_discards; /* # frames discarded */ 91 92 __u32 ppp_ibytes; /* bytes received */ 93 __u32 ppp_ioctects; /* bytes received not in error */ 94 __u32 ppp_ipackets; /* packets received */ 95 __u32 ppp_ierrors; /* receive errors */ 96 __u32 ppp_ilqrs; /* # LQR frames received */ 97 98 __u32 ppp_obytes; /* raw bytes sent */ 99 __u32 ppp_ooctects; /* frame bytes sent */ 100 __u32 ppp_opackets; /* packets sent */ 101 __u32 ppp_oerrors; /* transmit errors */ 102 __u32 ppp_olqrs; /* # LQR frames sent */ 103}; 104 105struct vjstat { 106 __u32 vjs_packets; /* outbound packets */ 107 __u32 vjs_compressed; /* outbound compressed packets */ 108 __u32 vjs_searches; /* searches for connection state */ 109 __u32 vjs_misses; /* times couldn't find conn. state */ 110 __u32 vjs_uncompressedin; /* inbound uncompressed packets */ 111 __u32 vjs_compressedin; /* inbound compressed packets */ 112 __u32 vjs_errorin; /* inbound unknown type packets */ 113 __u32 vjs_tossed; /* inbound packets tossed because of error */ 114}; 115 116struct compstat { 117 __u32 unc_bytes; /* total uncompressed bytes */ 118 __u32 unc_packets; /* total uncompressed packets */ 119 __u32 comp_bytes; /* compressed bytes */ 120 __u32 comp_packets; /* compressed packets */ 121 __u32 inc_bytes; /* incompressible bytes */ 122 __u32 inc_packets; /* incompressible packets */ 123 124 /* the compression ratio is defined as in_count / bytes_out */ 125 __u32 in_count; /* Bytes received */ 126 __u32 bytes_out; /* Bytes transmitted */ 127 128 double ratio; /* not computed in kernel. */ 129}; 130 131struct ppp_stats { 132 struct pppstat p; /* basic PPP statistics */ 133 struct vjstat vj; /* VJ header compression statistics */ 134}; 135 136struct ppp_comp_stats { 137 struct compstat c; /* packet compression statistics */ 138 struct compstat d; /* packet decompression statistics */ 139}; 140 141/* 142 * The following structure records the time in seconds since 143 * the last NP packet was sent or received. 144 */ 145struct ppp_idle { 146 __kernel_time_t xmit_idle; /* time since last NP packet sent */ 147 __kernel_time_t recv_idle; /* time since last NP packet received */ 148}; 149 150#endif /* _UAPI_PPP_DEFS_H_ */ 151