FreeBSD/Linux Kernel Cross Reference
sys/netinet/in_systm.h

     /*
      * Copyright (c) 1982, 1986, 1993
      *      The Regents of the University of California.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the University of
     *      California, Berkeley and its contributors.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)in_systm.h  8.1 (Berkeley) 6/10/93
     * $FreeBSD: src/sys/netinet/in_systm.h,v 1.9 1999/12/29 04:41:00 peter Exp $
     * $DragonFly: src/sys/netinet/in_systm.h,v 1.4 2006/05/20 02:42:12 dillon Exp $
     */
    
    #ifndef _NETINET_IN_SYSTM_H_
    #define _NETINET_IN_SYSTM_H_
    
    #ifndef _SYS_TYPES_H_
    #include <sys/types.h>
    #endif
    
    /*
     * Miscellaneous internetwork
     * definitions for kernel.
     */
    
    /*
     * Network types.
     *
     * Internally the system keeps counters in the headers with the bytes
     * swapped so that VAX instructions will work on them.  It reverses
     * the bytes before transmission at each protocol level.  The n_ types
     * represent the types with the bytes in ``high-ender'' order.
     */
    typedef u_int16_t n_short;              /* short as received from the net */
    typedef u_int32_t n_long;               /* long as received from the net */
    
    typedef u_int32_t n_time;               /* ms since 00:00 GMT, byte rev */
    
    #ifdef _KERNEL
    n_time   iptime (void);
    #endif
    
    #endif

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