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 #include <sys/appleapiopts.h>
  61
  62 #ifndef DONT_WARN_OBSOLETE
  63 #warning if_slvar.h is not used by the darwin kernel
  64 #endif
  65
  66 #include <sys/callout.h>
  67 #include <sys/mbuf.h>
  68 #include <net/slcompress.h>
  69
  70 #ifdef __APPLE_API_PRIVATE
  71
  72 /*
  73  * Definitions for SLIP interface data structures
  74  *
  75  * (This exists so programs like slstats can get at the definition
  76  *  of sl_softc.)
  77  */
  78 struct sl_softc {
  79         struct  ifnet sc_if;            /* network-visible interface */
  80         struct  ifqueue sc_fastq;       /* interactive output queue */
  81         struct  tty *sc_ttyp;           /* pointer to tty structure */
  82         u_char  *sc_mp;                 /* pointer to next available buf char */
  83         u_char  *sc_ep;                 /* pointer to last available buf char */
  84         u_char  *sc_buf;                /* input buffer */
  85         u_int   sc_flags;               /* see below */
  86         u_int   sc_escape;      /* =1 if last char input was FRAME_ESCAPE */
  87         long    sc_lasttime;            /* last time a char arrived */
  88         long    sc_abortcount;          /* number of abort escape chars */
  89         long    sc_starttime;           /* time of first abort in window */
  90         u_int   sc_keepalive;           /* time to decide link hang */
  91         u_int   sc_outfill;     /* time to send FRAME_END when output idle */
  92                                         /*
  93                                          * Handles for scheduling outfill and
  94                                          * keepalive timeouts.
  95                                          */
  96 #if FB3x
  97         struct  callout_handle  sc_ofhandle;
  98         struct  callout_handle  sc_kahandle;
  99 #endif
 100         struct  slcompress sc_comp;     /* tcp compression data */
 101 };
 102
 103 /* internal flags */
 104 #define SC_ERROR        0x0001          /* had an input error */
 105 #define SC_OUTWAIT      0x0002          /* waiting for output fill */
 106 #define SC_KEEPALIVE    0x0004          /* input keepalive */
 107 #define SC_STATIC       0x0008          /* it is static unit */
 108
 109 /* visible flags */
 110 #define SC_COMPRESS     IFF_LINK0       /* compress TCP traffic */
 111 #define SC_NOICMP       IFF_LINK1       /* suppress ICMP traffic */
 112 #define SC_AUTOCOMP     IFF_LINK2       /* auto-enable TCP compression */
 113
 114 #endif /* __APPLE_API_PRIVATE */
 115 #endif