114 lines
3.9 KiB
C
114 lines
3.9 KiB
C
/*
|
|
* Copyright (c) University of British Columbia, 1984
|
|
* Copyright (c) 1990, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Laboratory for Computation Vision and the Computer Science Department
|
|
* of the University of British Columbia.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*
|
|
* @(#)hd_var.h 8.1 (Berkeley) 6/10/93
|
|
* $Id: hd_var.h,v 1.3 1994/08/21 05:44:06 paul Exp $
|
|
*/
|
|
|
|
#ifndef _NETCCITT_HD_VAR_H_
|
|
#define _NETCCITT_HD_VAR_H_
|
|
|
|
/*
|
|
*
|
|
* hdlc control block
|
|
*
|
|
*/
|
|
|
|
struct hdtxq {
|
|
struct mbuf *head;
|
|
struct mbuf *tail;
|
|
};
|
|
|
|
struct hdcb {
|
|
struct hdcb *hd_next; /* pointer to next hdlc control block */
|
|
char hd_state; /* link state */
|
|
char hd_vs; /* send state variable */
|
|
char hd_vr; /* receive state variable */
|
|
char hd_lastrxnr; /* last received N(R) */
|
|
char hd_lasttxnr; /* last transmitted N(R) */
|
|
char hd_condition;
|
|
#define TIMER_RECOVERY_CONDITION 0x01
|
|
#define REJ_CONDITION 0x02
|
|
#define REMOTE_RNR_CONDITION 0X04
|
|
char hd_retxcnt;
|
|
char hd_xx;
|
|
struct hdtxq hd_txq;
|
|
struct mbuf *hd_retxq[MODULUS];
|
|
char hd_retxqi;
|
|
char hd_rrtimer;
|
|
char hd_timer;
|
|
#define SET_TIMER(hdp) hdp->hd_timer = hd_t1
|
|
#define KILL_TIMER(hdp) hdp->hd_timer = 0
|
|
char hd_dontcopy; /* if-driver doesn't free I-frames */
|
|
struct ifnet *hd_ifp; /* device's network visible interface */
|
|
struct ifaddr *hd_ifa; /* device's X.25 network address */
|
|
struct x25config *hd_xcp;
|
|
caddr_t hd_pkp; /* Level III junk */
|
|
int (*hd_output)(); /* separate entry for HDLC direct output */
|
|
|
|
/* link statistics */
|
|
|
|
long hd_iframes_in;
|
|
long hd_iframes_out;
|
|
long hd_rrs_in;
|
|
long hd_rrs_out;
|
|
short hd_rejs_in;
|
|
short hd_rejs_out;
|
|
long hd_window_condition;
|
|
short hd_invalid_ns;
|
|
short hd_invalid_nr;
|
|
short hd_timeouts;
|
|
short hd_resets;
|
|
short hd_unknown;
|
|
short hd_frmrs_in;
|
|
short hd_frmrs_out;
|
|
short hd_rnrs_in;
|
|
short hd_rnrs_out;
|
|
};
|
|
|
|
#ifdef KERNEL
|
|
extern struct hdcb *hdcbhead; /* head of linked list of hdcb's */
|
|
extern struct Frmr_frame hd_frmr; /* rejected frame diagnostic info */
|
|
extern struct ifqueue hdintrq; /* hdlc packet input queue */
|
|
|
|
extern int hd_t1; /* timer T1 value */
|
|
extern int hd_t3; /* RR send timer */
|
|
extern int hd_n2; /* frame retransmission limit */
|
|
#endif
|
|
|
|
#endif
|