1 /* $NetBSD: if_slvar.h,v 1.16 1996/05/07 02:40:46 thorpej 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)if_slvar.h 8.3 (Berkeley) 2/1/94 36 */ 37 38 /* 39 * Definitions for SLIP interface data structures 40 * 41 * (This exists so programs like slstats can get at the definition 42 * of sl_softc.) 43 */ 44 struct sl_softc { 45 struct ifnet sc_if; /* network-visible interface */ 46 int sc_unit; /* XXX unit number */ 47 struct ifqueue sc_fastq; /* interactive output 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_buf; /* input buffer */ 52 u_int sc_flags; /* see below */ 53 u_int sc_escape; /* =1 if last char input was FRAME_ESCAPE */ 54 long sc_lasttime; /* last time a char arrived */ 55 long sc_abortcount; /* number of abort esacpe chars */ 56 long sc_starttime; /* time of first abort in window */ 57 long sc_oqlen; /* previous output queue size */ 58 long sc_otimeout; /* number of times output's stalled */ 59 #ifdef NetBSD 60 int sc_oldbufsize; /* previous output buffer size */ 61 int sc_oldbufquot; /* previous output buffer quoting */ 62 #endif 63 #ifdef INET /* XXX */ 64 struct slcompress sc_comp; /* tcp compression data */ 65 #endif 66 caddr_t sc_bpf; /* BPF data */ 67 }; 68 69 /* internal flags */ 70 #define SC_ERROR 0x0001 /* had an input error */ 71 72 /* visible flags */ 73 #define SC_COMPRESS IFF_LINK0 /* compress TCP traffic */ 74 #define SC_NOICMP IFF_LINK1 /* supress ICMP traffic */ 75 #define SC_AUTOCOMP IFF_LINK2 /* auto-enable TCP compression */ 76 77 #ifdef _KERNEL 78 void slattach __P((void)); 79 void slclose __P((struct tty *)); 80 void slinput __P((int, struct tty *)); 81 int slioctl __P((struct ifnet *, u_long, caddr_t)); 82 int slopen __P((dev_t, struct tty *)); 83 int sloutput __P((struct ifnet *, 84 struct mbuf *, struct sockaddr *, struct rtentry *)); 85 void slstart __P((struct tty *)); 86 int sltioctl __P((struct tty *, u_long, caddr_t, int)); 87 #endif /* _KERNEL */ 88