1 /*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)if_slvar.h 8.3 (Berkeley) 2/1/94 34 * $Id: if_slvar.h,v 1.11 1994/05/13 06:02:56 mycroft Exp $ 35 */ 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 struct ifqueue sc_fastq; /* interactive output queue */ 46 struct tty *sc_ttyp; /* pointer to tty structure */ 47 u_char *sc_mp; /* pointer to next available buf char */ 48 u_char *sc_ep; /* pointer to last available buf char */ 49 u_char *sc_buf; /* input buffer */ 50 u_int sc_flags; /* see below */ 51 u_int sc_escape; /* =1 if last char input was FRAME_ESCAPE */ 52 long sc_lasttime; /* last time a char arrived */ 53 long sc_abortcount; /* number of abort esacpe chars */ 54 long sc_starttime; /* time of first abort in window */ 55 long sc_oqlen; /* previous output queue size */ 56 long sc_otimeout; /* number of times output's stalled */ 57 #ifdef __NetBSD__ 58 int sc_oldbufsize; /* previous output buffer size */ 59 int sc_oldbufquot; /* previous output buffer quoting */ 60 #endif 61 #ifdef INET /* XXX */ 62 struct slcompress sc_comp; /* tcp compression data */ 63 #endif 64 caddr_t sc_bpf; /* BPF data */ 65 }; 66 67 /* internal flags */ 68 #define SC_ERROR 0x0001 /* had an input error */ 69 70 /* visible flags */ 71 #define SC_COMPRESS IFF_LINK0 /* compress TCP traffic */ 72 #define SC_NOICMP IFF_LINK1 /* supress ICMP traffic */ 73 #define SC_AUTOCOMP IFF_LINK2 /* auto-enable TCP compression */ 74 75 #ifdef KERNEL 76 void slattach __P((void)); 77 void slclose __P((struct tty *)); 78 void slinput __P((int, struct tty *)); 79 int slioctl __P((struct ifnet *, int, caddr_t)); 80 int slopen __P((dev_t, struct tty *)); 81 int sloutput __P((struct ifnet *, 82 struct mbuf *, struct sockaddr *, struct rtentry *)); 83 void slstart __P((struct tty *)); 84 int sltioctl __P((struct tty *, int, caddr_t, int)); 85 #endif /* KERNEL */ 86