projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * The contents of this file constitute Original Code as defined in and | |
| 7 | * are subject to the Apple Public Source License Version 1.1 (the | |
| 8 | * "License"). You may not use this file except in compliance with the | |
| 9 | * License. Please obtain a copy of the License at | |
| 10 | * http://www.apple.com/publicsource and read it before using this file. | |
| 11 | * | |
| 12 | * This Original Code and all software distributed under the License are | |
| 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the | |
| 17 | * License for the specific language governing rights and limitations | |
| 18 | * under the License. | |
| 19 | * | |
| 20 | * @APPLE_LICENSE_HEADER_END@ | |
| 21 | */ | |
| 22 | /* | |
| 23 | * Copyright (c) University of British Columbia, 1984 | |
| 24 | * Copyright (c) 1990, 1993 | |
| 25 | * The Regents of the University of California. All rights reserved. | |
| 26 | * | |
| 27 | * This code is derived from software contributed to Berkeley by | |
| 28 | * the Laboratory for Computation Vision and the Computer Science Department | |
| 29 | * of the University of British Columbia. | |
| 30 | * | |
| 31 | * Redistribution and use in source and binary forms, with or without | |
| 32 | * modification, are permitted provided that the following conditions | |
| 33 | * are met: | |
| 34 | * 1. Redistributions of source code must retain the above copyright | |
| 35 | * notice, this list of conditions and the following disclaimer. | |
| 36 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 37 | * notice, this list of conditions and the following disclaimer in the | |
| 38 | * documentation and/or other materials provided with the distribution. | |
| 39 | * 3. All advertising materials mentioning features or use of this software | |
| 40 | * must display the following acknowledgement: | |
| 41 | * This product includes software developed by the University of | |
| 42 | * California, Berkeley and its contributors. | |
| 43 | * 4. Neither the name of the University nor the names of its contributors | |
| 44 | * may be used to endorse or promote products derived from this software | |
| 45 | * without specific prior written permission. | |
| 46 | * | |
| 47 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 48 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 49 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 50 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 51 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 52 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 53 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 54 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 55 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 56 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 57 | * SUCH DAMAGE. | |
| 58 | * | |
| 59 | * @(#)hd_var.h 8.1 (Berkeley) 6/10/93 | |
| 60 | */ | |
| 61 | ||
| 62 | /* | |
| 63 | * | |
| 64 | * hdlc control block | |
| 65 | * | |
| 66 | */ | |
| 67 | ||
| 68 | struct hdtxq { | |
| 69 | struct mbuf *head; | |
| 70 | struct mbuf *tail; | |
| 71 | }; | |
| 72 | ||
| 73 | struct hdcb { | |
| 74 | struct hdcb *hd_next; /* pointer to next hdlc control block */ | |
| 75 | char hd_state; /* link state */ | |
| 76 | char hd_vs; /* send state variable */ | |
| 77 | char hd_vr; /* receive state variable */ | |
| 78 | char hd_lastrxnr; /* last received N(R) */ | |
| 79 | char hd_lasttxnr; /* last transmitted N(R) */ | |
| 80 | char hd_condition; | |
| 81 | #define TIMER_RECOVERY_CONDITION 0x01 | |
| 82 | #define REJ_CONDITION 0x02 | |
| 83 | #define REMOTE_RNR_CONDITION 0X04 | |
| 84 | char hd_retxcnt; | |
| 85 | char hd_xx; | |
| 86 | struct hdtxq hd_txq; | |
| 87 | struct mbuf *hd_retxq[MODULUS]; | |
| 88 | char hd_retxqi; | |
| 89 | char hd_rrtimer; | |
| 90 | char hd_timer; | |
| 91 | #define SET_TIMER(hdp) hdp->hd_timer = hd_t1 | |
| 92 | #define KILL_TIMER(hdp) hdp->hd_timer = 0 | |
| 93 | char hd_dontcopy; /* if-driver doesn't free I-frames */ | |
| 94 | struct ifnet *hd_ifp; /* device's network visible interface */ | |
| 95 | struct ifaddr *hd_ifa; /* device's X.25 network address */ | |
| 96 | struct x25config *hd_xcp; | |
| 97 | caddr_t hd_pkp; /* Level III junk */ | |
| 98 | int (*hd_output)(); /* separate entry for HDLC direct output */ | |
| 99 | ||
| 100 | /* link statistics */ | |
| 101 | ||
| 102 | long hd_iframes_in; | |
| 103 | long hd_iframes_out; | |
| 104 | long hd_rrs_in; | |
| 105 | long hd_rrs_out; | |
| 106 | short hd_rejs_in; | |
| 107 | short hd_rejs_out; | |
| 108 | long hd_window_condition; | |
| 109 | short hd_invalid_ns; | |
| 110 | short hd_invalid_nr; | |
| 111 | short hd_timeouts; | |
| 112 | short hd_resets; | |
| 113 | short hd_unknown; | |
| 114 | short hd_frmrs_in; | |
| 115 | short hd_frmrs_out; | |
| 116 | short hd_rnrs_in; | |
| 117 | short hd_rnrs_out; | |
| 118 | }; | |
| 119 | ||
| 120 | #ifdef KERNEL | |
| 121 | struct hdcb *hdcbhead; /* head of linked list of hdcb's */ | |
| 122 | struct Frmr_frame hd_frmr; /* rejected frame diagnostic info */ | |
| 123 | struct ifqueue hdintrq; /* hdlc packet input queue */ | |
| 124 | ||
| 125 | int hd_t1; /* timer T1 value */ | |
| 126 | int hd_t3; /* RR send timer */ | |
| 127 | int hd_n2; /* frame retransmission limit */ | |
| 128 | #endif |