sys/netipsec/key.h

   1 /*      $NetBSD: key.h,v 1.7 2007/06/27 20:38:33 degroote Exp $ */
   2 /*      $FreeBSD: src/sys/netipsec/key.h,v 1.1.4.1 2003/01/24 05:11:36 sam Exp $        */
   3 /*      $KAME: key.h,v 1.21 2001/07/27 03:51:30 itojun Exp $    */
   4
   5 /*
   6  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the project nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef _NETIPSEC_KEY_H_
  35 #define _NETIPSEC_KEY_H_
  36
  37 #ifdef _KERNEL
  38
  39 #include "opt_ipsec.h"
  40
  41 struct secpolicy;
  42 struct secpolicyindex;
  43 struct ipsecrequest;
  44 struct secasvar;
  45 struct sockaddr;
  46 struct socket;
  47 struct sadb_msg;
  48 struct sadb_x_policy;
  49 struct secasindex;
  50 union sockaddr_union;
  51
  52 int key_havesp(u_int dir);
  53 struct secpolicy *key_allocsp(struct secpolicyindex *, u_int,
  54         const char*, int);
  55 struct secpolicy *key_allocsp2(u_int32_t spi, union sockaddr_union *dst,
  56         u_int8_t proto, u_int dir, const char*, int);
  57 struct secpolicy *key_newsp(const char*, int);
  58 struct secpolicy *key_gettunnel(const struct sockaddr *,
  59         const struct sockaddr *, const struct sockaddr *,
  60         const struct sockaddr *, const char*, int);
  61 /* NB: prepend with _ for KAME IPv6 compatbility */
  62 void _key_freesp(struct secpolicy **, const char*, int);
  63
  64 /*
  65  * Access to the SADB are interlocked with splsoftnet.  In particular,
  66  * holders of SA's use this to block accesses by protocol processing
  67  * that can happen either by network swi's or by continuations that
  68  * occur on crypto callbacks.  Much of this could go away if
  69  * key_checkrequest were redone.
  70  */
  71 #define KEY_ALLOCSP(spidx, dir)                                 \
  72         key_allocsp(spidx, dir, __FILE__, __LINE__)
  73 #define KEY_ALLOCSP2(spi, dst, proto, dir)                      \
  74         key_allocsp2(spi, dst, proto, dir, __FILE__, __LINE__)
  75 #define KEY_NEWSP()                                             \
  76         key_newsp(__FILE__, __LINE__)
  77 #define KEY_GETTUNNEL(osrc, odst, isrc, idst)                   \
  78         key_gettunnel(osrc, odst, isrc, idst, __FILE__, __LINE__)
  79 #define KEY_FREESP(spp)                                         \
  80         _key_freesp(spp, __FILE__, __LINE__)
  81
  82 struct secasvar *key_allocsa(const union sockaddr_union *,
  83                 u_int, u_int32_t, u_int16_t, u_int16_t, const char*, int);
  84 void key_freesav(struct secasvar **, const char*, int);
  85
  86 #define KEY_ALLOCSA(dst, proto, spi, sport, dport)                              \
  87         key_allocsa(dst, proto, spi, sport, dport,  __FILE__, __LINE__)
  88 #define KEY_FREESAV(psav)                                       \
  89         key_freesav(psav, __FILE__, __LINE__)
  90
  91 void key_freeso (struct socket *);
  92 int key_checktunnelsanity (struct secasvar *, u_int, void *, void *);
  93 int key_checkrequest (struct ipsecrequest *isr, const struct secasindex *);
  94
  95 struct secpolicy *key_msg2sp (struct sadb_x_policy *, size_t, int *);
  96 struct mbuf *key_sp2msg (struct secpolicy *);
  97 int key_ismyaddr (struct sockaddr *);
  98 int key_cmpspidx_exactly (struct secpolicyindex *, struct secpolicyindex *);
  99 int key_cmpspidx_withmask (struct secpolicyindex *, struct secpolicyindex *);
 100 int key_spdacquire (struct secpolicy *);
 101 void key_timehandler (void*);
 102 u_long key_random (void);
 103 void key_randomfill (void *, size_t);
 104 void key_freereg (struct socket *);
 105 int key_parse (struct mbuf *, struct socket *);
 106 void key_init (void);
 107 void key_sa_recordxfer (struct secasvar *, struct mbuf *);
 108 void key_sa_routechange (struct sockaddr *);
 109 void key_sa_stir_iv (struct secasvar *);
 110
 111 #ifdef IPSEC_NAT_T
 112 u_int16_t key_portfromsaddr (const union sockaddr_union *);
 113 #endif
 114
 115
 116
 117 #ifdef MALLOC_DECLARE
 118 MALLOC_DECLARE(M_SECA);
 119 #endif /* MALLOC_DECLARE */
 120
 121 #endif /* defined(_KERNEL) */
 122 #endif /* !_NETIPSEC_KEY_H_ */