1 /* $OpenBSD: if_slvar.h,v 1.4 1997/02/24 13:34:01 niklas Exp $ */
2 /* $NetBSD: if_slvar.h,v 1.16 1996/05/07 02:40:46 thorpej Exp $ */
5 * Copyright (c) 1991, 1993
6 * The Regents of the University of California. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)if_slvar.h 8.3 (Berkeley) 2/1/94
40 * Definitions for SLIP interface data structures
42 * (This exists so programs like slstats can get at the definition
46 struct ifnet sc_if; /* network-visible interface */
47 int sc_unit; /* XXX unit number */
48 struct ifqueue sc_fastq; /* interactive output queue */
49 struct tty *sc_ttyp; /* pointer to tty structure */
50 u_char *sc_mp; /* pointer to next available buf char */
51 u_char *sc_ep; /* pointer to last available buf char */
52 u_char *sc_buf; /* input buffer */
53 u_int sc_flags; /* see below */
54 u_int sc_escape; /* =1 if last char input was FRAME_ESCAPE */
55 long sc_lasttime; /* last time a char arrived */
56 long sc_abortcount; /* number of abort esacpe chars */
57 long sc_starttime; /* time of first abort in window */
58 long sc_oqlen; /* previous output queue size */
59 long sc_otimeout; /* number of times output's stalled */
60 #if defined(__NetBSD__) || defined(__OpenBSD__)
61 int sc_oldbufsize; /* previous output buffer size */
62 int sc_oldbufquot; /* previous output buffer quoting */
65 struct slcompress sc_comp; /* tcp compression data */
67 caddr_t sc_bpf; /* BPF data */
71 #define SC_ERROR 0x0001 /* had an input error */
74 #define SC_COMPRESS IFF_LINK0 /* compress TCP traffic */
75 #define SC_NOICMP IFF_LINK1 /* supress ICMP traffic */
76 #define SC_AUTOCOMP IFF_LINK2 /* auto-enable TCP compression */
79 void slattach __P((void));
80 void slclose __P((struct tty *));
81 void slinput __P((int, struct tty *));
82 int slioctl __P((struct ifnet *, u_long, caddr_t));
83 int slopen __P((dev_t, struct tty *));
84 int sloutput __P((struct ifnet *,
85 struct mbuf *, struct sockaddr *, struct rtentry *));
86 void slstart __P((struct tty *));
87 int sltioctl __P((struct tty *, u_long, caddr_t, int));