The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net/slip.h

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    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. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by the University of
   16  *      California, Berkeley and its contributors.
   17  * 4. Neither the name of the University nor the names of its contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  *
   33  *      @(#)slip.h      8.1 (Berkeley) 2/12/94
   34  * $FreeBSD: releng/5.0/sys/net/slip.h 50477 1999-08-28 01:08:13Z peter $
   35  */
   36 
   37 #ifndef _NET_SLIP_H_
   38 #define _NET_SLIP_H_
   39 
   40 /* Ioctls operating on SLIP ttys. */
   41 #define SLIOCGUNIT      _IOR('t', 88, int)      /* get slip unit number */
   42 #define SLIOCSKEEPAL    _IOW('t', 84, int)      /* set keepalive */
   43 #define SLIOCSOUTFILL   _IOW('t', 83, int)      /* set out fill time */
   44 #define SLIOCGKEEPAL    _IOR('t', 82, int)      /* get keepalive time */
   45 #define SLIOCGOUTFILL   _IOR('t', 81, int)      /* get out fill time */
   46 #define SLIOCSUNIT      _IOW('t', 80, int)      /* set slip unit number */
   47 
   48 /*
   49  * Definitions of the pseudo-link-level header attached to slip
   50  * packets grabbed by the packet filter (bpf) traffic monitor.
   51  */
   52 #define SLIP_HDRLEN     16              /* BPF SLIP header length */
   53 
   54 /* Offsets into BPF SLIP header. */
   55 #define SLX_DIR         0               /* direction; see below */
   56 #define SLX_CHDR        1               /* compressed header data */
   57 #define CHDR_LEN        15              /* length of compressed header data */
   58 
   59 #define SLIPDIR_IN      0               /* incoming */
   60 #define SLIPDIR_OUT     1               /* outgoing */
   61 
   62 #endif /* !_NET_SLIP_H */

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