Watt-32 tcp/ip  2.2 dev-rel.10
if_slvar.h
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1 
5 /* $NetBSD: if_slvar.h,v 1.17 1997/03/27 20:36:17 thorpej Exp $ */
6 
7 /*-
8  * Copyright (c) 1991, 1993
9  * The Regents of the University of California. All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  * notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in the
18  * documentation and/or other materials provided with the distribution.
19  * 3. All advertising materials mentioning features or use of this software
20  * must display the following acknowledgement:
21  * This product includes software developed by the University of
22  * California, Berkeley and its contributors.
23  * 4. Neither the name of the University nor the names of its contributors
24  * may be used to endorse or promote products derived from this software
25  * without specific prior written permission.
26  *
27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30  * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37  * SUCH DAMAGE.
38  *
39  * @(#)if_slvar.h 8.3 (Berkeley) 2/1/94
40  */
41 #ifndef __NET_IF_SLVAR_H
42 #define __NET_IF_SLVAR_H
43 
44 /*
45  * Definitions for SLIP interface data structures
46  *
47  * (This exists so programs like slstats can get at the definition
48  * of sl_softc.)
49  */
50 
51 struct sl_softc {
52  struct ifnet sc_if; /* network-visible interface */
53  int sc_unit; /* XXX unit number */
54  struct ifqueue sc_fastq; /* interactive output queue */
55  struct tty *sc_ttyp; /* pointer to tty structure */
56  u_char *sc_mp; /* pointer to next available buf char */
57  u_char *sc_ep; /* pointer to last available buf char */
58  u_char *sc_buf; /* input buffer */
59  u_char *sc_xxx; /* XXX don't ask... */
60  u_int sc_flags; /* see below */
61  u_int sc_escape; /* =1 if last char input was FRAME_ESCAPE */
62  long sc_lasttime; /* last time a char arrived */
63  long sc_abortcount; /* number of abort esacpe chars */
64  long sc_starttime; /* time of first abort in window */
65  long sc_oqlen; /* previous output queue size */
66  long sc_otimeout; /* number of times output's stalled */
67 #ifdef NetBSD
68  int sc_oldbufsize; /* previous output buffer size */
69  int sc_oldbufquot; /* previous output buffer quoting */
70 #endif
71 #ifdef INET /* XXX */
72  struct slcompress sc_comp; /* tcp compression data */
73 #endif
74  caddr_t sc_bpf; /* BPF data */
75 };
76 
77 /* internal flags */
78 #define SC_ERROR 0x0001 /* had an input error */
79 
80 /* visible flags */
81 #define SC_COMPRESS IFF_LINK0 /* compress TCP traffic */
82 #define SC_NOICMP IFF_LINK1 /* supress ICMP traffic */
83 #define SC_AUTOCOMP IFF_LINK2 /* auto-enable TCP compression */
84 
85 #endif
Definition: if.h:130