/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* ppp_defs.h - PPP definitions.
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*
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* Copyright 1994-2000 Paul Mackerras.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*/
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#include <linux/types.h>
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#ifndef _UAPI_PPP_DEFS_H_
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#define _UAPI_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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#define PPP_MRU 1500 /* default MRU = max length of info field */
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#define PPP_ADDRESS(p) (((__u8 *)(p))[0])
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#define PPP_CONTROL(p) (((__u8 *)(p))[1])
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#define PPP_PROTOCOL(p) ((((__u8 *)(p))[2] << 8) + ((__u8 *)(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 0x21 /* Internet Protocol */
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#define PPP_AT 0x29 /* AppleTalk Protocol */
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#define PPP_IPX 0x2b /* IPX protocol */
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#define PPP_VJC_COMP 0x2d /* VJ compressed TCP */
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#define PPP_VJC_UNCOMP 0x2f /* VJ uncompressed TCP */
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#define PPP_MP 0x3d /* Multilink protocol */
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#define PPP_IPV6 0x57 /* Internet Protocol Version 6 */
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#define PPP_COMPFRAG 0xfb /* fragment compressed below bundle */
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#define PPP_COMP 0xfd /* compressed packet */
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#define PPP_MPLS_UC 0x0281 /* Multi Protocol Label Switching - Unicast */
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#define PPP_MPLS_MC 0x0283 /* Multi Protocol Label Switching - Multicast */
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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_CCPFRAG 0x80fb /* CCP at link level (below MP bundle) */
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#define PPP_CCP 0x80fd /* Compression Control Protocol */
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#define PPP_MPLSCP 0x80fd /* MPLS 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 /* Cryptographic Handshake Auth. Protocol */
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#define PPP_CBCP 0xc029 /* Callback Control 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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/*
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* Extended asyncmap - allows any character to be escaped.
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*/
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typedef __u32 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 for LQRP and pppstats
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*/
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struct pppstat {
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__u32 ppp_discards; /* # frames discarded */
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__u32 ppp_ibytes; /* bytes received */
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__u32 ppp_ioctects; /* bytes received not in error */
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__u32 ppp_ipackets; /* packets received */
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__u32 ppp_ierrors; /* receive errors */
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__u32 ppp_ilqrs; /* # LQR frames received */
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__u32 ppp_obytes; /* raw bytes sent */
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__u32 ppp_ooctects; /* frame bytes sent */
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__u32 ppp_opackets; /* packets sent */
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__u32 ppp_oerrors; /* transmit errors */
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__u32 ppp_olqrs; /* # LQR frames sent */
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};
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struct vjstat {
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__u32 vjs_packets; /* outbound packets */
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__u32 vjs_compressed; /* outbound compressed packets */
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__u32 vjs_searches; /* searches for connection state */
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__u32 vjs_misses; /* times couldn't find conn. state */
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__u32 vjs_uncompressedin; /* inbound uncompressed packets */
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__u32 vjs_compressedin; /* inbound compressed packets */
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__u32 vjs_errorin; /* inbound unknown type packets */
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__u32 vjs_tossed; /* inbound packets tossed because of error */
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};
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struct compstat {
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__u32 unc_bytes; /* total uncompressed bytes */
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__u32 unc_packets; /* total uncompressed packets */
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__u32 comp_bytes; /* compressed bytes */
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__u32 comp_packets; /* compressed packets */
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__u32 inc_bytes; /* incompressible bytes */
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__u32 inc_packets; /* incompressible packets */
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/* the compression ratio is defined as in_count / bytes_out */
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__u32 in_count; /* Bytes received */
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__u32 bytes_out; /* Bytes transmitted */
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double ratio; /* not computed in kernel. */
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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 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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* Linux implements both 32-bit and 64-bit time_t versions
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* for compatibility with user space that defines ppp_idle
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* based on the libc time_t.
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*/
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struct ppp_idle {
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__kernel_old_time_t xmit_idle; /* time since last NP packet sent */
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__kernel_old_time_t recv_idle; /* time since last NP packet received */
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};
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struct ppp_idle32 {
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__s32 xmit_idle; /* time since last NP packet sent */
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__s32 recv_idle; /* time since last NP packet received */
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};
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struct ppp_idle64 {
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__s64 xmit_idle; /* time since last NP packet sent */
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__s64 recv_idle; /* time since last NP packet received */
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};
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#endif /* _UAPI_PPP_DEFS_H_ */
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