sys/net/if_slvar.h

   1 /*      $NetBSD: if_slvar.h,v 1.32 2006/06/07 22:33:43 kardel 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_ */