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Annotation of Net2/net/if_slvar.h, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1991 The Regents of the University of California.
        !             3:  * 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:  *     @(#)if_slvar.h  7.7 (Berkeley) 5/7/91
        !            34:  *
        !            35:  * $Header: if_slvar.h,v 1.3 89/05/31 02:25:18 van Exp $
        !            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:        struct  ifqueue sc_fastq;       /* interactive output queue */
        !            47:        struct  tty *sc_ttyp;           /* pointer to tty structure */
        !            48:        u_char  *sc_mp;                 /* pointer to next available buf char */
        !            49:        u_char  *sc_ep;                 /* pointer to last available buf char */
        !            50:        u_char  *sc_buf;                /* input buffer */
        !            51:        u_int   sc_flags;               /* see below */
        !            52:        u_int   sc_escape;      /* =1 if last char input was FRAME_ESCAPE */
        !            53:        u_int   sc_bytessent;
        !            54:        u_int   sc_bytesrcvd;
        !            55:        long    sc_lasttime;            /* last time a char arrived */
        !            56:        long    sc_starttime;           /* last time a char arrived */
        !            57:        long    sc_abortcount;          /* number of abort esacpe chars */
        !            58: #ifdef INET                            /* XXX */
        !            59:        struct  slcompress sc_comp;     /* tcp compression data */
        !            60: #endif
        !            61: };
        !            62: 
        !            63: /* visible flags */
        !            64: #define        SC_COMPRESS     0x0002          /* compress TCP traffic */
        !            65: #define        SC_NOICMP       0x0004          /* supress ICMP traffic */
        !            66: #define        SC_AUTOCOMP     0x0008          /* auto-enable TCP compression */
        !            67: /* internal flags (should be separate) */
        !            68: #define        SC_ABORT        0x10000         /* have been sent an abort request */
        !            69: 
        !            70: /* this stuff doesn't belong here... */
        !            71: #define        SLIOCGFLAGS     _IOR('t', 90, int)      /* get configuration flags */
        !            72: #define        SLIOCSFLAGS     _IOW('t', 89, int)      /* set configuration flags */
        !            73: #define        SLIOCGUNIT      _IOR('t', 88, int)      /* get slip unit number */

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