mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-17 10:26:15 +00:00
117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* 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 **, int, int);
|
|
extern int hdlc_WrapperOctets(struct lcp *, u_short);
|
|
|
|
extern struct layer hdlclayer;
|