58bb60a3dc
from the KAME IPsec implementation, but with heavy borrowing and influence of openbsd. A key feature of this implementation is that it uses the kernel crypto framework to do all crypto work so when h/w crypto support is present IPsec operation is automatically accelerated. Otherwise the protocol implementations are rather differet while the SADB and policy management code is very similar to KAME (for the moment). Note that this implementation is enabled with a FAST_IPSEC option. With this you get all protocols; i.e. there is no FAST_IPSEC_ESP option. FAST_IPSEC and IPSEC are mutually exclusive; you cannot build both into a single system. This software is well tested with IPv4 but should be considered very experimental (i.e. do not deploy in production environments). This software does NOT currently support IPv6. In fact do not configure FAST_IPSEC and INET6 in the same system. Obtained from: KAME + openbsd Supported by: Vernier Networks
182 lines
5.8 KiB
C
182 lines
5.8 KiB
C
/* $FreeBSD$ */
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/* $KAME: keydb.h,v 1.14 2000/08/02 17:58:26 sakane Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _NETIPSEC_KEYDB_H_
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#define _NETIPSEC_KEYDB_H_
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#ifdef _KERNEL
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#include <netipsec/key_var.h>
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/*
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* The union of all possible address formats we handle.
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*/
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union sockaddr_union {
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struct sockaddr sa;
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struct sockaddr_in sin;
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struct sockaddr_in6 sin6;
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};
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/* Security Assocciation Index */
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/* NOTE: Ensure to be same address family */
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struct secasindex {
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union sockaddr_union src; /* srouce address for SA */
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union sockaddr_union dst; /* destination address for SA */
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u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */
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u_int8_t mode; /* mode of protocol, see ipsec.h */
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u_int32_t reqid; /* reqid id who owned this SA */
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/* see IPSEC_MANUAL_REQID_MAX. */
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};
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/* Security Association Data Base */
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struct secashead {
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LIST_ENTRY(secashead) chain;
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struct secasindex saidx;
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struct sadb_ident *idents; /* source identity */
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struct sadb_ident *identd; /* destination identity */
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/* XXX I don't know how to use them. */
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u_int8_t state; /* MATURE or DEAD. */
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LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1];
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/* SA chain */
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/* The first of this list is newer SA */
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struct route sa_route; /* route cache */
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};
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struct xformsw;
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struct enc_xform;
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struct auth_hash;
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struct comp_algo;
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/* Security Association */
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struct secasvar {
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LIST_ENTRY(secasvar) chain;
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u_int refcnt; /* reference count */
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u_int8_t state; /* Status of this Association */
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u_int8_t alg_auth; /* Authentication Algorithm Identifier*/
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u_int8_t alg_enc; /* Cipher Algorithm Identifier */
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u_int8_t alg_comp; /* Compression Algorithm Identifier */
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u_int32_t spi; /* SPI Value, network byte order */
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u_int32_t flags; /* holder for SADB_KEY_FLAGS */
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struct sadb_key *key_auth; /* Key for Authentication */
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struct sadb_key *key_enc; /* Key for Encryption */
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caddr_t iv; /* Initilization Vector */
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u_int ivlen; /* length of IV */
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void *sched; /* intermediate encryption key */
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size_t schedlen;
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struct secreplay *replay; /* replay prevention */
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long created; /* for lifetime */
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struct sadb_lifetime *lft_c; /* CURRENT lifetime, it's constant. */
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struct sadb_lifetime *lft_h; /* HARD lifetime */
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struct sadb_lifetime *lft_s; /* SOFT lifetime */
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u_int32_t seq; /* sequence number */
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pid_t pid; /* message's pid */
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struct secashead *sah; /* back pointer to the secashead */
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/*
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* NB: Fields with a tdb_ prefix are part of the "glue" used
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* to interface to the OpenBSD crypto support. This was done
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* to distinguish this code from the mainline KAME code.
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*/
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struct xformsw *tdb_xform; /* transform */
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struct enc_xform *tdb_encalgxform; /* encoding algorithm */
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struct auth_hash *tdb_authalgxform; /* authentication algorithm */
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struct comp_algo *tdb_compalgxform; /* compression algorithm */
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u_int64_t tdb_cryptoid; /* crypto session id */
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};
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/* replay prevention */
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struct secreplay {
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u_int32_t count;
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u_int wsize; /* window size, i.g. 4 bytes */
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u_int32_t seq; /* used by sender */
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u_int32_t lastseq; /* used by receiver */
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caddr_t bitmap; /* used by receiver */
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int overflow; /* overflow flag */
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};
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/* socket table due to send PF_KEY messages. */
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struct secreg {
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LIST_ENTRY(secreg) chain;
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struct socket *so;
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};
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#ifndef IPSEC_NONBLOCK_ACQUIRE
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/* acquiring list table. */
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struct secacq {
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LIST_ENTRY(secacq) chain;
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struct secasindex saidx;
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u_int32_t seq; /* sequence number */
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long created; /* for lifetime */
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int count; /* for lifetime */
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};
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#endif
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/* Sensitivity Level Specification */
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/* nothing */
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#define SADB_KILL_INTERVAL 600 /* six seconds */
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/* secpolicy */
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extern struct secpolicy *keydb_newsecpolicy __P((void));
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extern void keydb_delsecpolicy __P((struct secpolicy *));
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/* secashead */
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extern struct secashead *keydb_newsecashead __P((void));
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extern void keydb_delsecashead __P((struct secashead *));
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/* secasvar */
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extern struct secasvar *keydb_newsecasvar __P((void));
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extern void keydb_refsecasvar __P((struct secasvar *));
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extern void keydb_freesecasvar __P((struct secasvar *));
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/* secreplay */
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extern struct secreplay *keydb_newsecreplay __P((size_t));
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extern void keydb_delsecreplay __P((struct secreplay *));
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/* secreg */
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extern struct secreg *keydb_newsecreg __P((void));
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extern void keydb_delsecreg __P((struct secreg *));
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#endif /* _KERNEL */
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#endif /* _NETIPSEC_KEYDB_H_ */
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