/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * 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 */ /* * * 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 struct hdcb *hdcbhead; /* head of linked list of hdcb's */ struct Frmr_frame hd_frmr; /* rejected frame diagnostic info */ struct ifqueue hdintrq; /* hdlc packet input queue */ int hd_t1; /* timer T1 value */ int hd_t3; /* RR send timer */ int hd_n2; /* frame retransmission limit */ #endif