bsd/net/if_slvar.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*-
  23  * Copyright (c) 1991, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *      This product includes software developed by the University of
  37  *      California, Berkeley and its contributors.
  38  * 4. Neither the name of the University nor the names of its contributors
  39  *    may be used to endorse or promote products derived from this software
  40  *    without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  43  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  44  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  45  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  46  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  47  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  48  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  50  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  51  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  *
  54  *      @(#)if_slvar.h  8.3 (Berkeley) 2/1/94
  55  *
  56  */
  57
  58 #ifndef _NET_IF_SLVAR_H_
  59 #define _NET_IF_SLVAR_H_
  60
  61 #include <sys/callout.h>
  62 #include <sys/mbuf.h>
  63 #include <net/slcompress.h>
  64
  65
  66 /*
  67  * Definitions for SLIP interface data structures
  68  *
  69  * (This exists so programs like slstats can get at the definition
  70  *  of sl_softc.)
  71  */
  72 struct sl_softc {
  73         struct  ifnet sc_if;            /* network-visible interface */
  74         struct  ifqueue sc_fastq;       /* interactive output queue */
  75         struct  tty *sc_ttyp;           /* pointer to tty structure */
  76         u_char  *sc_mp;                 /* pointer to next available buf char */
  77         u_char  *sc_ep;                 /* pointer to last available buf char */
  78         u_char  *sc_buf;                /* input buffer */
  79         u_int   sc_flags;               /* see below */
  80         u_int   sc_escape;      /* =1 if last char input was FRAME_ESCAPE */
  81         long    sc_lasttime;            /* last time a char arrived */
  82         long    sc_abortcount;          /* number of abort escape chars */
  83         long    sc_starttime;           /* time of first abort in window */
  84         u_int   sc_keepalive;           /* time to decide link hang */
  85         u_int   sc_outfill;     /* time to send FRAME_END when output idle */
  86                                         /*
  87                                          * Handles for scheduling outfill and
  88                                          * keepalive timeouts.
  89                                          */
  90 #if FB3x
  91         struct  callout_handle  sc_ofhandle;
  92         struct  callout_handle  sc_kahandle;
  93 #endif
  94         struct  slcompress sc_comp;     /* tcp compression data */
  95 };
  96
  97 /* internal flags */
  98 #define SC_ERROR        0x0001          /* had an input error */
  99 #define SC_OUTWAIT      0x0002          /* waiting for output fill */
 100 #define SC_KEEPALIVE    0x0004          /* input keepalive */
 101 #define SC_STATIC       0x0008          /* it is static unit */
 102
 103 /* visible flags */
 104 #define SC_COMPRESS     IFF_LINK0       /* compress TCP traffic */
 105 #define SC_NOICMP       IFF_LINK1       /* suppress ICMP traffic */
 106 #define SC_AUTOCOMP     IFF_LINK2       /* auto-enable TCP compression */
 107
 108
 109 #endif