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/key.h

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    1 /*      $FreeBSD: stable/4/sys/netipsec/key.h 109792 2003-01-24 05:11:36Z sam $ */
    2 /*      $KAME: key.h,v 1.21 2001/07/27 03:51:30 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 #ifndef _NETIPSEC_KEY_H_
   34 #define _NETIPSEC_KEY_H_
   35 
   36 #ifdef _KERNEL
   37 
   38 struct secpolicy;
   39 struct secpolicyindex;
   40 struct ipsecrequest;
   41 struct secasvar;
   42 struct sockaddr;
   43 struct socket;
   44 struct sadb_msg;
   45 struct sadb_x_policy;
   46 struct secasindex;
   47 union sockaddr_union;
   48 
   49 extern  int key_havesp(u_int dir);
   50 extern struct secpolicy *key_allocsp(struct secpolicyindex *, u_int,
   51         const char*, int);
   52 extern struct secpolicy *key_allocsp2(u_int32_t spi, union sockaddr_union *dst,
   53         u_int8_t proto, u_int dir, const char*, int);
   54 extern struct secpolicy *key_newsp(const char*, int);
   55 extern struct secpolicy *key_gettunnel(const struct sockaddr *,
   56         const struct sockaddr *, const struct sockaddr *,
   57         const struct sockaddr *, const char*, int);
   58 /* NB: prepend with _ for KAME IPv6 compatbility */
   59 extern void _key_freesp(struct secpolicy **, const char*, int);
   60 
   61 /*
   62  * Access to the SADB are interlocked with splnet.  In particular,
   63  * holders of SA's use this to block accesses by protocol processing
   64  * that can happen either by network swi's or by continuations that
   65  * occur on crypto callbacks.  Much of this could go away if
   66  * key_checkrequest were redone.
   67  */ 
   68 #define KEY_ALLOCSP(spidx, dir)                                 \
   69         key_allocsp(spidx, dir, __FILE__, __LINE__)
   70 #define KEY_ALLOCSP2(spi, dst, proto, dir)                      \
   71         key_allocsp2(spi, dst, proto, dir, __FILE__, __LINE__)
   72 #define KEY_NEWSP()                                             \
   73         key_newsp(__FILE__, __LINE__)
   74 #define KEY_GETTUNNEL(osrc, odst, isrc, idst)                   \
   75         key_gettunnel(osrc, odst, isrc, idst, __FILE__, __LINE__)
   76 #define KEY_FREESP(spp)                                         \
   77         _key_freesp(spp, __FILE__, __LINE__)
   78 
   79 extern struct secasvar *key_allocsa(union sockaddr_union *, u_int, u_int32_t,
   80         const char*, int);
   81 extern void key_freesav(struct secasvar **, const char*, int);
   82 
   83 #define KEY_ALLOCSA(dst, proto, spi)                            \
   84         key_allocsa(dst, proto, spi, __FILE__, __LINE__)
   85 #define KEY_FREESAV(psav)                                       \
   86         key_freesav(psav, __FILE__, __LINE__)
   87 
   88 extern void key_freeso __P((struct socket *));
   89 extern int key_checktunnelsanity __P((struct secasvar *, u_int,
   90                                         caddr_t, caddr_t));
   91 extern int key_checkrequest
   92         __P((struct ipsecrequest *isr, const struct secasindex *));
   93 
   94 extern struct secpolicy *key_msg2sp __P((struct sadb_x_policy *,
   95         size_t, int *));
   96 extern struct mbuf *key_sp2msg __P((struct secpolicy *));
   97 extern int key_ismyaddr __P((struct sockaddr *));
   98 extern int key_spdacquire __P((struct secpolicy *));
   99 extern void key_timehandler __P((void));
  100 extern u_long key_random __P((void));
  101 extern void key_randomfill __P((void *, size_t));
  102 extern void key_freereg __P((struct socket *));
  103 extern int key_parse __P((struct mbuf *, struct socket *));
  104 extern void key_init __P((void));
  105 extern void key_sa_recordxfer __P((struct secasvar *, struct mbuf *));
  106 extern void key_sa_routechange __P((struct sockaddr *));
  107 extern void key_sa_stir_iv __P((struct secasvar *));
  108 
  109 #ifdef MALLOC_DECLARE
  110 MALLOC_DECLARE(M_SECA);
  111 #endif /* MALLOC_DECLARE */
  112 
  113 #endif /* defined(_KERNEL) */
  114 #endif /* _NETIPSEC_KEY_H_ */

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