FreeBSD/Linux Kernel Cross Reference
sys/netipsec/ah.h

     /*      $FreeBSD$       */
     /*      $KAME: ah.h,v 1.13 2000/10/18 21:28:00 itojun Exp $     */
     
     /*-
      * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
      * 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. Neither the name of the project 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 PROJECT 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 PROJECT 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.
     */
    
    /*
     * RFC1826/2402 authentication header.
     */
    
    #ifndef _NETIPSEC_AH_H_
    #define _NETIPSEC_AH_H_
    
    struct ah {
            u_int8_t        ah_nxt;         /* Next Header */
            u_int8_t        ah_len;         /* Length of data, in 32bit */
            u_int16_t       ah_reserve;     /* Reserved for future use */
            u_int32_t       ah_spi;         /* Security parameter index */
            /* variable size, 32bit bound*/ /* Authentication data */
    };
    
    struct newah {
            u_int8_t        ah_nxt;         /* Next Header */
            u_int8_t        ah_len;         /* Length of data + 1, in 32bit */
            u_int16_t       ah_reserve;     /* Reserved for future use */
            u_int32_t       ah_spi;         /* Security parameter index */
            u_int32_t       ah_seq;         /* Sequence number field */
            /* variable size, 32bit bound*/ /* Authentication data */
    };
    #endif /*_NETIPSEC_AH_H_*/

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