FreeBSD/Linux Kernel Cross Reference
sys/netinet6/esp.h

     /*      $FreeBSD: src/sys/netinet6/esp.h,v 1.8 2005/01/07 02:30:34 imp Exp $    */
     /*      $KAME: esp.h,v 1.19 2001/09/04 08:43:19 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.
     */
    
    /*
     * RFC1827/2406 Encapsulated Security Payload.
     */
    
    #ifndef _NETINET6_ESP_H_
    #define _NETINET6_ESP_H_
    
    #ifndef _SYS_TYPES_H_
    #include <sys/types.h>
    #endif
    
    #if defined(_KERNEL) && !defined(_LKM)
    #include "opt_inet.h"
    #endif
    
    struct esp {
            u_int32_t       esp_spi;        /* ESP */
            /* variable size, 32bit bound */        /* Initialization Vector */
            /* variable size */             /* Payload data */
            /* variable size */             /* padding */
            /* 8bit */                      /* pad size */
            /* 8bit */                      /* next header */
            /* variable size, 32bit bound */ /* Authentication data (new IPsec) */
    };
    
    struct newesp {
            u_int32_t       esp_spi;        /* ESP */
            u_int32_t       esp_seq;        /* Sequence number */
            /* variable size */             /* (IV and) Payload data */
            /* variable size */             /* padding */
            /* 8bit */                      /* pad size */
            /* 8bit */                      /* next header */
            /* variable size, 32bit bound *//* Authentication data */
    };
    
    struct esptail {
            u_int8_t        esp_padlen;     /* pad length */
            u_int8_t        esp_nxt;        /* Next header */
            /* variable size, 32bit bound *//* Authentication data (new IPsec)*/
    };
    
    #ifdef _KERNEL
    
    struct secasvar;
    
    struct esp_algorithm {
            size_t padbound;        /* pad boundary, in byte */
            int ivlenval;           /* iv length, in byte */
            int (*mature) (struct secasvar *);
            int keymin;     /* in bits */
            int keymax;     /* in bits */
            size_t (*schedlen) (const struct esp_algorithm *);
            const char *name;
            int (*ivlen) (const struct esp_algorithm *, struct secasvar *);
            int (*decrypt) (struct mbuf *, size_t,
                    struct secasvar *, const struct esp_algorithm *, int);
            int (*encrypt) (struct mbuf *, size_t, size_t,
                    struct secasvar *, const struct esp_algorithm *, int);
            /* not supposed to be called directly */
            int (*schedule) (const struct esp_algorithm *, struct secasvar *);
            int (*blockdecrypt) (const struct esp_algorithm *,
                    struct secasvar *, u_int8_t *, u_int8_t *);
            int (*blockencrypt) (const struct esp_algorithm *,
                    struct secasvar *, u_int8_t *, u_int8_t *);
    };
    
    extern const struct esp_algorithm *esp_algorithm_lookup (int);
   extern int esp_max_ivlen (void);
   
   /* crypt routines */
   extern int esp4_output (struct mbuf *, struct ipsecrequest *);
   extern int esp4_input(struct mbuf **, int *, int);
   extern size_t esp_hdrsiz (struct ipsecrequest *);
   
   extern int esp_schedule (const struct esp_algorithm *, struct secasvar *);
   extern int esp_auth (struct mbuf *, size_t, size_t,
           struct secasvar *, u_char *);
   #endif /* _KERNEL */
   
   #endif /* _NETINET6_ESP_H_ */

Cache object: 0df41d9b749c8de26d2e7084a50d9710