bsd/net/if_slvar.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*-
  26  * Copyright (c) 1991, 1993
  27  *      The Regents of the University of California.  All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer.
  34  * 2. Redistributions in binary form must reproduce the above copyright
  35  *    notice, this list of conditions and the following disclaimer in the
  36  *    documentation and/or other materials provided with the distribution.
  37  * 3. All advertising materials mentioning features or use of this software
  38  *    must display the following acknowledgement:
  39  *      This product includes software developed by the University of
  40  *      California, Berkeley and its contributors.
  41  * 4. Neither the name of the University nor the names of its contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  46  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  47  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  48  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  49  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  50  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  51  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  53  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  55  * SUCH DAMAGE.
  56  *
  57  *      @(#)if_slvar.h  8.3 (Berkeley) 2/1/94
  58  *
  59  */
  60
  61 #ifndef _NET_IF_SLVAR_H_
  62 #define _NET_IF_SLVAR_H_
  63 #include <sys/appleapiopts.h>
  64
  65 #ifndef DONT_WARN_OBSOLETE
  66 #warning if_slvar.h is not used by the darwin kernel
  67 #endif
  68
  69 #include <sys/callout.h>
  70 #include <sys/mbuf.h>
  71 #include <net/slcompress.h>
  72
  73 #ifdef __APPLE_API_PRIVATE
  74
  75 /*
  76  * Definitions for SLIP interface data structures
  77  *
  78  * (This exists so programs like slstats can get at the definition
  79  *  of sl_softc.)
  80  */
  81 struct sl_softc {
  82         struct  ifnet sc_if;            /* network-visible interface */
  83         struct  ifqueue sc_fastq;       /* interactive output queue */
  84         struct  tty *sc_ttyp;           /* pointer to tty structure */
  85         u_char  *sc_mp;                 /* pointer to next available buf char */
  86         u_char  *sc_ep;                 /* pointer to last available buf char */
  87         u_char  *sc_buf;                /* input buffer */
  88         u_int   sc_flags;               /* see below */
  89         u_int   sc_escape;      /* =1 if last char input was FRAME_ESCAPE */
  90         long    sc_lasttime;            /* last time a char arrived */
  91         long    sc_abortcount;          /* number of abort escape chars */
  92         long    sc_starttime;           /* time of first abort in window */
  93         u_int   sc_keepalive;           /* time to decide link hang */
  94         u_int   sc_outfill;     /* time to send FRAME_END when output idle */
  95                                         /*
  96                                          * Handles for scheduling outfill and
  97                                          * keepalive timeouts.
  98                                          */
  99 #if FB3x
 100         struct  callout_handle  sc_ofhandle;
 101         struct  callout_handle  sc_kahandle;
 102 #endif
 103         struct  slcompress sc_comp;     /* tcp compression data */
 104 };
 105
 106 /* internal flags */
 107 #define SC_ERROR        0x0001          /* had an input error */
 108 #define SC_OUTWAIT      0x0002          /* waiting for output fill */
 109 #define SC_KEEPALIVE    0x0004          /* input keepalive */
 110 #define SC_STATIC       0x0008          /* it is static unit */
 111
 112 /* visible flags */
 113 #define SC_COMPRESS     IFF_LINK0       /* compress TCP traffic */
 114 #define SC_NOICMP       IFF_LINK1       /* suppress ICMP traffic */
 115 #define SC_AUTOCOMP     IFF_LINK2       /* auto-enable TCP compression */
 116
 117 #endif /* __APPLE_API_PRIVATE */
 118 #endif