sys/net/slip.h

   1 /*-
   2  * Copyright (c) 1994
   3  *      The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)slip.h      8.1 (Berkeley) 2/12/94
  30  * $FreeBSD: src/sys/net/slip.h,v 1.9 1999/08/28 00:48:29 peter Exp $
  31  * $DragonFly: src/sys/net/slip.h,v 1.2 2003/06/17 04:28:48 dillon Exp $
  32  */
  33
  34 #ifndef _NET_SLIP_H_
  35 #define _NET_SLIP_H_
  36
  37 #include <sys/ioccom.h>
  38
  39 /* Ioctls operating on SLIP ttys. */
  40 #define SLIOCGUNIT      _IOR('t', 88, int)      /* get slip unit number */
  41 #define SLIOCSKEEPAL    _IOW('t', 84, int)      /* set keepalive */
  42 #define SLIOCSOUTFILL   _IOW('t', 83, int)      /* set out fill time */
  43 #define SLIOCGKEEPAL    _IOR('t', 82, int)      /* get keepalive time */
  44 #define SLIOCGOUTFILL   _IOR('t', 81, int)      /* get out fill time */
  45 #define SLIOCSUNIT      _IOW('t', 80, int)      /* set slip unit number */
  46
  47 /*
  48  * Definitions of the pseudo-link-level header attached to slip
  49  * packets grabbed by the packet filter (bpf) traffic monitor.
  50  */
  51 #define SLIP_HDRLEN     16              /* BPF SLIP header length */
  52
  53 /* Offsets into BPF SLIP header. */
  54 #define SLX_DIR         0               /* direction; see below */
  55 #define SLX_CHDR        1               /* compressed header data */
  56 #define CHDR_LEN        15              /* length of compressed header data */
  57
  58 #define SLIPDIR_IN      0               /* incoming */
  59 #define SLIPDIR_OUT     1               /* outgoing */
  60
  61 #endif /* !_NET_SLIP_H */