1 | /* $NetBSD: if_slvar.h,v 1.33 2007/07/14 21:02:41 ad Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 1991, 1993 |
5 | * The Regents of the University of California. All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. Neither the name of the University nor the names of its contributors |
16 | * may be used to endorse or promote products derived from this software |
17 | * without specific prior written permission. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | * |
31 | * @(#)if_slvar.h 8.4 (Berkeley) 1/9/95 |
32 | */ |
33 | |
34 | #ifndef _NET_IF_SLVAR_H_ |
35 | #define _NET_IF_SLVAR_H_ |
36 | |
37 | /* |
38 | * Definitions for SLIP interface data structures |
39 | * |
40 | * (This exists so programs like slstats can get at the definition |
41 | * of sl_softc.) |
42 | */ |
43 | struct sl_softc { |
44 | struct ifnet sc_if; /* network-visible interface */ |
45 | int sc_unit; /* XXX unit number */ |
46 | struct ifqueue sc_fastq; /* interactive output queue */ |
47 | struct ifqueue sc_inq; /* input queue */ |
48 | struct tty *sc_ttyp; /* pointer to tty structure */ |
49 | u_char *sc_mp; /* pointer to next available buf char */ |
50 | u_char *sc_ep; /* pointer to last available buf char */ |
51 | u_char *sc_pktstart; /* pointer to beginning of packet */ |
52 | struct mbuf *sc_mbuf; /* 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 | void *sc_si; /* softintr handle */ |
61 | #ifdef __NetBSD__ |
62 | int sc_oldbufsize; /* previous output buffer size */ |
63 | int sc_oldbufquot; /* previous output buffer quoting */ |
64 | #endif |
65 | #ifdef INET /* XXX */ |
66 | struct slcompress sc_comp; /* tcp compression data */ |
67 | #endif |
68 | struct bintime sc_lastpacket; /* for watchdog */ |
69 | LIST_ENTRY(sl_softc) sc_iflist; |
70 | }; |
71 | |
72 | /* internal flags */ |
73 | #define SC_ERROR 0x0001 /* had an input error */ |
74 | |
75 | /* visible flags */ |
76 | #define SC_COMPRESS IFF_LINK0 /* compress TCP traffic */ |
77 | #define SC_NOICMP IFF_LINK1 /* supress ICMP traffic */ |
78 | #define SC_AUTOCOMP IFF_LINK2 /* auto-enable TCP compression */ |
79 | |
80 | #endif /* _NET_IF_SLVAR_H_ */ |
81 | |