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Annotation of Net2/net/if_slvar.h, revision 1.1.1.1

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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