/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * ppp_defs.h - PPP definitions. * * Copyright 1994-2000 Paul Mackerras. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. */ #include <linux/types.h> #ifndef _PPP_DEFS_H_ #define _PPP_DEFS_H_ /* * The basic PPP frame. */ #define PPP_HDRLEN 4 /* octets for standard ppp header */ #define PPP_FCSLEN 2 /* octets for FCS */ #define PPP_MRU 1500 /* default MRU = max length of info field */ #define PPP_ADDRESS(p) (((__u8 *)(p))[0]) #define PPP_CONTROL(p) (((__u8 *)(p))[1]) #define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(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 0x21 /* Internet Protocol */ #define PPP_AT 0x29 /* AppleTalk Protocol */ #define PPP_IPX 0x2b /* IPX protocol */ #define PPP_VJC_COMP 0x2d /* VJ compressed TCP */ #define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */ #define PPP_MP 0x3d /* Multilink protocol */ #define PPP_IPV6 0x57 /* Internet Protocol Version 6 */ #define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */ #define PPP_COMP 0xfd /* compressed packet */ #define PPP_MPLS_UC 0x0281 /* Multi Protocol Label Switching - Unicast */ #define PPP_MPLS_MC 0x0283 /* Multi Protocol Label Switching - Multicast */ #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_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */ #define PPP_CCP 0x80fd /* Compression Control Protocol */ #define PPP_MPLSCP 0x80fd /* MPLS 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 */ /* * Extended asyncmap - allows any character to be escaped. */ typedef __u32 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 for LQRP and pppstats */ struct pppstat { __u32 ppp_discards; /* # frames discarded */ __u32 ppp_ibytes; /* bytes received */ __u32 ppp_ioctects; /* bytes received not in error */ __u32 ppp_ipackets; /* packets received */ __u32 ppp_ierrors; /* receive errors */ __u32 ppp_ilqrs; /* # LQR frames received */ __u32 ppp_obytes; /* raw bytes sent */ __u32 ppp_ooctects; /* frame bytes sent */ __u32 ppp_opackets; /* packets sent */ __u32 ppp_oerrors; /* transmit errors */ __u32 ppp_olqrs; /* # LQR frames sent */ }; struct vjstat { __u32 vjs_packets; /* outbound packets */ __u32 vjs_compressed; /* outbound compressed packets */ __u32 vjs_searches; /* searches for connection state */ __u32 vjs_misses; /* times couldn't find conn. state */ __u32 vjs_uncompressedin; /* inbound uncompressed packets */ __u32 vjs_compressedin; /* inbound compressed packets */ __u32 vjs_errorin; /* inbound unknown type packets */ __u32 vjs_tossed; /* inbound packets tossed because of error */ }; struct compstat { __u32 unc_bytes; /* total uncompressed bytes */ __u32 unc_packets; /* total uncompressed packets */ __u32 comp_bytes; /* compressed bytes */ __u32 comp_packets; /* compressed packets */ __u32 inc_bytes; /* incompressible bytes */ __u32 inc_packets; /* incompressible packets */ /* the compression ratio is defined as in_count / bytes_out */ __u32 in_count; /* Bytes received */ __u32 bytes_out; /* Bytes transmitted */ double ratio; /* not computed in kernel. */ }; struct ppp_stats { struct pppstat p; /* basic PPP statistics */ struct vjstat vj; /* VJ header compression statistics */ }; 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. * * Linux implements both 32-bit and 64-bit time_t versions * for compatibility with user space that defines ppp_idle * based on the libc time_t. */ struct ppp_idle { __kernel_old_time_t xmit_idle; /* time since last NP packet sent */ __kernel_old_time_t recv_idle; /* time since last NP packet received */ }; struct ppp_idle32 { __s32 xmit_idle; /* time since last NP packet sent */ __s32 recv_idle; /* time since last NP packet received */ }; struct ppp_idle64 { __s64 xmit_idle; /* time since last NP packet sent */ __s64 recv_idle; /* time since last NP packet received */ }; #endif /* _PPP_DEFS_H_ */