| /*- |
| * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org> |
| * based on work by Toshiharu OHNO <tony-o@iij.ad.jp> |
| * Internet Initiative Japan, Inc (IIJ) |
| * 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * $FreeBSD: src/usr.sbin/ppp/hdlc.h,v 1.24.26.1 2010/12/21 17:10:29 kensmith Exp $ |
| */ |
| |
| /* |
| * Definition for Async HDLC |
| */ |
| #define HDLC_SYN 0x7e /* SYNC character */ |
| #define HDLC_ESC 0x7d /* Escape character */ |
| #define HDLC_XOR 0x20 /* Modifier value */ |
| |
| #define HDLC_ADDR 0xff |
| #define HDLC_UI 0x03 |
| /* |
| * Definition for HDLC Frame Check Sequence |
| */ |
| #define INITFCS 0xffff /* Initial value for FCS computation */ |
| #define GOODFCS 0xf0b8 /* Good FCS value */ |
| |
| #define DEF_MRU 1500 |
| #define MAX_MRU 2048 |
| #define MIN_MRU 296 |
| |
| #define DEF_MTU 0 /* whatever peer says */ |
| #define MAX_MTU 2048 |
| #define MIN_MTU 296 |
| |
| struct physical; |
| struct link; |
| struct lcp; |
| struct bundle; |
| struct mbuf; |
| struct cmdargs; |
| |
| struct hdlc { |
| struct pppTimer ReportTimer; |
| |
| struct { |
| int badfcs; |
| int badaddr; |
| int badcommand; |
| int unknownproto; |
| } laststats, stats; |
| |
| struct { |
| struct lcp *owner; /* parent LCP */ |
| struct pppTimer timer; /* When to send */ |
| int method; /* bit-mask for LQM_* from lqr.h */ |
| |
| u_int32_t ifOutUniPackets; /* Packets sent by me */ |
| u_int32_t ifOutOctets; /* Octets sent by me */ |
| u_int32_t ifInUniPackets; /* Packets received from peer */ |
| u_int32_t ifInDiscards; /* Discards */ |
| u_int32_t ifInErrors; /* Errors */ |
| u_int32_t ifInOctets; /* Octets received from peer (unused) */ |
| |
| struct { |
| u_int32_t InGoodOctets; /* Good octets received from peer */ |
| u_int32_t OutLQRs; /* LQRs sent by me */ |
| u_int32_t InLQRs; /* LQRs received from peer */ |
| |
| struct lqrsavedata Save; /* Our last LQR */ |
| struct lqrsavedata prevSave; /* Our last-but-one LQR (analysis) */ |
| |
| struct lqrdata peer; /* Last LQR from peer */ |
| int peer_timeout; /* peers max lqr timeout */ |
| int resent; /* Resent last packet `resent' times */ |
| } lqr; |
| |
| struct { |
| u_int32_t seq_sent; /* last echo sent */ |
| u_int32_t seq_recv; /* last echo received */ |
| } echo; |
| } lqm; |
| }; |
| |
| |
| extern void hdlc_Init(struct hdlc *, struct lcp *); |
| extern void hdlc_StartTimer(struct hdlc *); |
| extern void hdlc_StopTimer(struct hdlc *); |
| extern int hdlc_ReportStatus(struct cmdargs const *); |
| extern const char *hdlc_Protocol2Nam(u_short); |
| extern void hdlc_DecodePacket(struct bundle *, u_short, struct mbuf *, |
| struct link *); |
| |
| extern u_short hdlc_Fcs(u_char *, size_t); |
| extern int hdlc_Detect(u_char const **, unsigned, int); |
| #define hdlc_WrapperOctets() (2) |
| |
| extern struct layer hdlclayer; |