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1.1 root 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) 1991, 1993
24: * The Regents of the University of California. All rights reserved.
25: *
26: * Redistribution and use in source and binary forms, with or without
27: * modification, are permitted provided that the following conditions
28: * are met:
29: * 1. Redistributions of source code must retain the above copyright
30: * notice, this list of conditions and the following disclaimer.
31: * 2. Redistributions in binary form must reproduce the above copyright
32: * notice, this list of conditions and the following disclaimer in the
33: * documentation and/or other materials provided with the distribution.
34: * 3. All advertising materials mentioning features or use of this software
35: * must display the following acknowledgement:
36: * This product includes software developed by the University of
37: * California, Berkeley and its contributors.
38: * 4. Neither the name of the University nor the names of its contributors
39: * may be used to endorse or promote products derived from this software
40: * without specific prior written permission.
41: *
42: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
43: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
44: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
45: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
46: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
47: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
48: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
50: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
51: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52: * SUCH DAMAGE.
53: *
54: * @(#)if_slvar.h 8.3 (Berkeley) 2/1/94
55: *
56: */
57:
58: #ifndef _NET_IF_SLVAR_H_
59: #define _NET_IF_SLVAR_H_
60:
61: #include <sys/callout.h>
62: #include <sys/mbuf.h>
63: #include <net/slcompress.h>
64:
65:
66: /*
67: * Definitions for SLIP interface data structures
68: *
69: * (This exists so programs like slstats can get at the definition
70: * of sl_softc.)
71: */
72: struct sl_softc {
73: struct ifnet sc_if; /* network-visible interface */
74: struct ifqueue sc_fastq; /* interactive output queue */
75: struct tty *sc_ttyp; /* pointer to tty structure */
76: u_char *sc_mp; /* pointer to next available buf char */
77: u_char *sc_ep; /* pointer to last available buf char */
78: u_char *sc_buf; /* input buffer */
79: u_int sc_flags; /* see below */
80: u_int sc_escape; /* =1 if last char input was FRAME_ESCAPE */
81: long sc_lasttime; /* last time a char arrived */
82: long sc_abortcount; /* number of abort escape chars */
83: long sc_starttime; /* time of first abort in window */
84: u_int sc_keepalive; /* time to decide link hang */
85: u_int sc_outfill; /* time to send FRAME_END when output idle */
86: /*
87: * Handles for scheduling outfill and
88: * keepalive timeouts.
89: */
90: #if FB3x
91: struct callout_handle sc_ofhandle;
92: struct callout_handle sc_kahandle;
93: #endif
94: struct slcompress sc_comp; /* tcp compression data */
95: };
96:
97: /* internal flags */
98: #define SC_ERROR 0x0001 /* had an input error */
99: #define SC_OUTWAIT 0x0002 /* waiting for output fill */
100: #define SC_KEEPALIVE 0x0004 /* input keepalive */
101: #define SC_STATIC 0x0008 /* it is static unit */
102:
103: /* visible flags */
104: #define SC_COMPRESS IFF_LINK0 /* compress TCP traffic */
105: #define SC_NOICMP IFF_LINK1 /* suppress ICMP traffic */
106: #define SC_AUTOCOMP IFF_LINK2 /* auto-enable TCP compression */
107:
108:
109: #endif
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