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/netipsec/esp.h

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    1 /*      $FreeBSD: releng/9.2/sys/netipsec/esp.h 139823 2005-01-07 01:45:51Z imp $       */
    2 /*      $KAME: esp.h,v 1.16 2000/10/18 21:28:00 itojun Exp $    */
    3 
    4 /*-
    5  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. Neither the name of the project nor the names of its contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  */
   32 
   33 /*
   34  * RFC1827/2406 Encapsulated Security Payload.
   35  */
   36 
   37 #ifndef _NETIPSEC_ESP_H_
   38 #define _NETIPSEC_ESP_H_
   39 
   40 struct esp {
   41         u_int32_t       esp_spi;        /* ESP */
   42         /*variable size, 32bit bound*/  /* Initialization Vector */
   43         /*variable size*/               /* Payload data */
   44         /*variable size*/               /* padding */
   45         /*8bit*/                        /* pad size */
   46         /*8bit*/                        /* next header */
   47         /*8bit*/                        /* next header */
   48         /*variable size, 32bit bound*/  /* Authentication data (new IPsec) */
   49 };
   50 
   51 struct newesp {
   52         u_int32_t       esp_spi;        /* ESP */
   53         u_int32_t       esp_seq;        /* Sequence number */
   54         /*variable size*/               /* (IV and) Payload data */
   55         /*variable size*/               /* padding */
   56         /*8bit*/                        /* pad size */
   57         /*8bit*/                        /* next header */
   58         /*8bit*/                        /* next header */
   59         /*variable size, 32bit bound*/  /* Authentication data */
   60 };
   61 
   62 struct esptail {
   63         u_int8_t        esp_padlen;     /* pad length */
   64         u_int8_t        esp_nxt;        /* Next header */
   65         /*variable size, 32bit bound*/  /* Authentication data (new IPsec)*/
   66 };
   67         
   68 #define ESP_ALEN        12      /* 96-bit authenticator */
   69 #endif /*_NETIPSEC_ESP_H_*/

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