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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /*
26: * Copyright (c) University of British Columbia, 1984
27: * Copyright (c) 1990, 1993
28: * The Regents of the University of California. All rights reserved.
29: *
30: * This code is derived from software contributed to Berkeley by
31: * the Laboratory for Computation Vision and the Computer Science Department
32: * of the University of British Columbia.
33: *
34: * Redistribution and use in source and binary forms, with or without
35: * modification, are permitted provided that the following conditions
36: * are met:
37: * 1. Redistributions of source code must retain the above copyright
38: * notice, this list of conditions and the following disclaimer.
39: * 2. Redistributions in binary form must reproduce the above copyright
40: * notice, this list of conditions and the following disclaimer in the
41: * documentation and/or other materials provided with the distribution.
42: * 3. All advertising materials mentioning features or use of this software
43: * must display the following acknowledgement:
44: * This product includes software developed by the University of
45: * California, Berkeley and its contributors.
46: * 4. Neither the name of the University nor the names of its contributors
47: * may be used to endorse or promote products derived from this software
48: * without specific prior written permission.
49: *
50: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60: * SUCH DAMAGE.
61: *
62: * @(#)hd_var.h 8.1 (Berkeley) 6/10/93
63: */
64:
65: /*
66: *
67: * hdlc control block
68: *
69: */
70:
71: struct hdtxq {
72: struct mbuf *head;
73: struct mbuf *tail;
74: };
75:
76: struct hdcb {
77: struct hdcb *hd_next; /* pointer to next hdlc control block */
78: char hd_state; /* link state */
79: char hd_vs; /* send state variable */
80: char hd_vr; /* receive state variable */
81: char hd_lastrxnr; /* last received N(R) */
82: char hd_lasttxnr; /* last transmitted N(R) */
83: char hd_condition;
84: #define TIMER_RECOVERY_CONDITION 0x01
85: #define REJ_CONDITION 0x02
86: #define REMOTE_RNR_CONDITION 0X04
87: char hd_retxcnt;
88: char hd_xx;
89: struct hdtxq hd_txq;
90: struct mbuf *hd_retxq[MODULUS];
91: char hd_retxqi;
92: char hd_rrtimer;
93: char hd_timer;
94: #define SET_TIMER(hdp) hdp->hd_timer = hd_t1
95: #define KILL_TIMER(hdp) hdp->hd_timer = 0
96: char hd_dontcopy; /* if-driver doesn't free I-frames */
97: struct ifnet *hd_ifp; /* device's network visible interface */
98: struct ifaddr *hd_ifa; /* device's X.25 network address */
99: struct x25config *hd_xcp;
100: caddr_t hd_pkp; /* Level III junk */
101: int (*hd_output)(); /* separate entry for HDLC direct output */
102:
103: /* link statistics */
104:
105: long hd_iframes_in;
106: long hd_iframes_out;
107: long hd_rrs_in;
108: long hd_rrs_out;
109: short hd_rejs_in;
110: short hd_rejs_out;
111: long hd_window_condition;
112: short hd_invalid_ns;
113: short hd_invalid_nr;
114: short hd_timeouts;
115: short hd_resets;
116: short hd_unknown;
117: short hd_frmrs_in;
118: short hd_frmrs_out;
119: short hd_rnrs_in;
120: short hd_rnrs_out;
121: };
122:
123: #ifdef _KERNEL
124: struct hdcb *hdcbhead; /* head of linked list of hdcb's */
125: struct Frmr_frame hd_frmr; /* rejected frame diagnostic info */
126: struct ifqueue hdintrq; /* hdlc packet input queue */
127:
128: int hd_t1; /* timer T1 value */
129: int hd_t3; /* RR send timer */
130: int hd_n2; /* frame retransmission limit */
131: #endif
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