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NetBSD/sys/netinet6/ipsec.h

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/* $NetBSD: ipsec.h,v 1.5 1999/07/31 18:41:17 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.
*/
/*
* IPsec controller part.
*/
#ifndef _NETINET6_IPSEC_H_
#define _NETINET6_IPSEC_H_
#if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__NetBSD__)
#if defined(_KERNEL) && !defined(_LKM)
#include "opt_inet.h"
#endif
#endif
#include <netkey/keyv2.h>
#include <netkey/keydb.h>
#ifdef KERNEL
/* Security Policy Data Base */
struct secpolicy {
struct secpolicy *next;
struct secpolicy *prev;
struct keytree *spt; /* back pointer to the top of SPD */
struct secindex idx; /* index */
int refcnt; /* reference count */
u_int state; /* 0: dead, others: alive */
#define IPSEC_SPSTATE_DEAD 0
#define IPSEC_SPSTATE_ALIVE 1
u_int policy; /* DISCARD, NONE or IPSEC, see keyv2.h */
struct ipsecrequest *req;
/* pointer to the ipsec request tree, */
/* if policy == IPSEC else this value == NULL.*/
};
/* Request for IPsec */
struct ipsecrequest {
struct ipsecrequest *next;
/* pointer to next structure */
/* If 0, it means end of chain. */
u_int proto; /* IPPROTO_ESP or IPPROTO_AH */
u_int mode; /* mode for security protocol, see below. */
u_int level; /* IPsec level defined below. */
struct sockaddr *proxy; /* Destination address in Outer IP header. */
/* If mode == TRANSPORT, it must be set NULL. */
struct secas *sa; /* place holder for the security association */
struct secpolicy *sp; /* back pointer to SP */
};
#endif /*KERNEL*/
#define IPSEC_MODE_TRANSPORT 0
#define IPSEC_MODE_TUNNEL 1
/* Policy level */
/*
* IPSEC, ENTRUST and BYPASS are allowd for setsockopt() in PCB,
* DISCARD, IPSEC and NONE are allowd for setkey() in SPD.
* DISCARD and NONE are allowd for system default.
*/
#define IPSEC_POLICY_DISCARD 0 /* discarding packet */
#define IPSEC_POLICY_NONE 1 /* through IPsec engine */
#define IPSEC_POLICY_IPSEC 2 /* do IPsec */
#define IPSEC_POLICY_ENTRUST 3 /* consulting SPD if present. */
#define IPSEC_POLICY_BYPASS 4 /* only for privileged socket. */
/* Security protocol level */
#define IPSEC_LEVEL_DEFAULT 0 /* reference to system default */
#define IPSEC_LEVEL_USE 1 /* use SA if present. */
#define IPSEC_LEVEL_REQUIRE 2 /* require SA. */
#define IPSEC_REPLAYWSIZE 32
/* statistics for ipsec processing */
struct ipsecstat {
u_long in_success; /* succeeded inbound process */
u_long in_polvio; /* security policy violation for inbound process */
u_long in_nosa; /* inbound SA is unavailable */
u_long in_inval; /* inbound processing failed due to EINVAL */
u_long in_badspi; /* failed getting a SPI */
u_long in_ahreplay; /* AH replay check failed */
u_long in_espreplay; /* ESP replay check failed */
u_long in_ahauthsucc; /* AH authentication success */
u_long in_ahauthfail; /* AH authentication failure */
u_long in_espauthsucc; /* ESP authentication success */
u_long in_espauthfail; /* ESP authentication failure */
u_long in_esphist[SADB_EALG_MAX];
u_long in_ahhist[SADB_AALG_MAX];
u_long out_success; /* succeeded outbound process */
u_long out_polvio; /* security policy violation for outbound process */
u_long out_nosa; /* outbound SA is unavailable */
u_long out_inval; /* outbound process failed due to EINVAL */
u_long out_noroute; /* there is no route */
u_long out_esphist[SADB_EALG_MAX];
u_long out_ahhist[SADB_AALG_MAX];
};
/*
* Definitions for IPsec & Key sysctl operations.
*/
/*
* Names for IPsec & Key sysctl objects
*/
#define IPSECCTL_STATS 1 /* stats */
#define IPSECCTL_DEF_POLICY 2
#define IPSECCTL_DEF_ESP_TRANSLEV 3 /* int; ESP transport mode */
#define IPSECCTL_DEF_ESP_NETLEV 4 /* int; ESP tunnel mode */
#define IPSECCTL_DEF_AH_TRANSLEV 5 /* int; AH transport mode */
#define IPSECCTL_DEF_AH_NETLEV 6 /* int; AH tunnel mode */
#define IPSECCTL_INBOUND_CALL_IKE 7
#define IPSECCTL_AH_CLEARTOS 8
#define IPSECCTL_AH_OFFSETMASK 9
#define IPSECCTL_DFBIT 10
#define IPSECCTL_ECN 11
#define IPSECCTL_MAXID 12
#define IPSECCTL_NAMES { \
{ 0, 0 }, \
{ 0, 0 }, \
{ "def_policy", CTLTYPE_INT }, \
{ "esp_trans_deflev", CTLTYPE_INT }, \
{ "esp_net_deflev", CTLTYPE_INT }, \
{ "ah_trans_deflev", CTLTYPE_INT }, \
{ "ah_net_deflev", CTLTYPE_INT }, \
{ "inbound_call_ike", CTLTYPE_INT }, \
{ "ah_cleartos", CTLTYPE_INT }, \
{ "ah_offsetmask", CTLTYPE_INT }, \
{ "dfbit", CTLTYPE_INT }, \
{ "ecn", CTLTYPE_INT }, \
}
#define IPSEC6CTL_NAMES { \
{ 0, 0 }, \
{ 0, 0 }, \
{ "def_policy", CTLTYPE_INT }, \
{ "esp_trans_deflev", CTLTYPE_INT }, \
{ "esp_net_deflev", CTLTYPE_INT }, \
{ "ah_trans_deflev", CTLTYPE_INT }, \
{ "ah_net_deflev", CTLTYPE_INT }, \
{ "inbound_call_ike", CTLTYPE_INT }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ "ecn", CTLTYPE_INT }, \
}
#define IPSECCTL_VARS { \
0, \
0, \
&ip4_def_policy.policy, \
&ip4_esp_trans_deflev, \
&ip4_esp_net_deflev, \
&ip4_ah_trans_deflev, \
&ip4_ah_net_deflev, \
&ip4_inbound_call_ike, \
&ip4_ah_cleartos, \
&ip4_ah_offsetmask, \
&ip4_ipsec_dfbit, \
&ip4_ipsec_ecn, \
}
#define IPSEC6CTL_VARS { \
0, \
0, \
&ip6_def_policy.policy, \
&ip6_esp_trans_deflev, \
&ip6_esp_net_deflev, \
&ip6_ah_trans_deflev, \
&ip6_ah_net_deflev, \
&ip6_inbound_call_ike, \
0, \
0, \
0, \
&ip6_ipsec_ecn, \
}
#ifdef KERNEL
struct ipsec_output_state {
struct mbuf *m;
struct route *ro;
struct sockaddr *dst;
};
extern struct ipsecstat ipsecstat;
extern struct secpolicy ip4_def_policy;
extern int ip4_esp_trans_deflev;
extern int ip4_esp_net_deflev;
extern int ip4_ah_trans_deflev;
extern int ip4_ah_net_deflev;
extern int ip4_inbound_call_ike;
extern int ip4_ah_cleartos;
extern int ip4_ah_offsetmask;
extern int ip4_ipsec_dfbit;
extern int ip4_ipsec_ecn;
#ifdef INET6
extern struct ipsecstat ipsec6stat;
extern struct secpolicy ip6_def_policy;
extern int ip6_esp_trans_deflev;
extern int ip6_esp_net_deflev;
extern int ip6_ah_trans_deflev;
extern int ip6_ah_net_deflev;
extern int ip6_inbound_call_ike;
extern int ip6_ipsec_ecn;
#endif
extern struct secpolicy *ipsec4_getpolicybysock
__P((struct mbuf *, struct socket *, int *));
extern struct secpolicy *ipsec4_getpolicybyaddr
__P((struct mbuf *, int, int *));
#ifdef INET6
extern struct secpolicy *ipsec6_getpolicybysock
__P((struct mbuf *, struct socket *, int *));
extern struct secpolicy *ipsec6_getpolicybyaddr
__P((struct mbuf *, int, int *));
#endif /*INET6*/
struct inpcb;
#ifdef INET6
struct in6pcb;
#endif
extern int ipsec_init_policy __P((struct secpolicy **));
extern struct secpolicy *ipsec_copy_policy __P((struct secpolicy *));
extern int ipsec_set_policy __P((struct secpolicy **, int, caddr_t, int, int));
extern int ipsec_get_policy __P((struct secpolicy *, struct mbuf **));
extern int ipsec4_delete_pcbpolicy __P((struct inpcb *));
#ifdef INET6
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
extern int ipsec6_delete_pcbpolicy __P((struct inpcb *));
#else
extern int ipsec6_delete_pcbpolicy __P((struct in6pcb *));
#endif
#endif
extern u_int ipsec_get_reqlevel __P((struct ipsecrequest *));
extern int ipsec4_in_reject_so __P((struct mbuf *, struct socket *));
extern int ipsec4_in_reject __P((struct mbuf *, struct inpcb *));
#ifdef INET6
extern int ipsec6_in_reject_so __P((struct mbuf *, struct socket *));
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
extern int ipsec6_in_reject __P((struct mbuf *, struct inpcb *));
#else
extern int ipsec6_in_reject __P((struct mbuf *, struct in6pcb *));
#endif
#endif /*INET6*/
struct secas;
struct tcpcb;
struct tcp6cb;
extern int ipsec_chkreplay __P((u_int32_t, struct secas *));
extern int ipsec_updatereplay __P((u_int32_t, struct secas *));
extern size_t ipsec4_hdrsiz __P((struct mbuf *, struct inpcb *));
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
extern size_t ipsec_hdrsiz_tcp __P((struct tcpcb *, int));
#else
extern size_t ipsec4_hdrsiz_tcp __P((struct tcpcb *));
#endif
#ifdef INET6
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
extern size_t ipsec6_hdrsiz __P((struct mbuf *, struct inpcb *));
#else
extern size_t ipsec6_hdrsiz __P((struct mbuf *, struct in6pcb *));
#if !defined(__NetBSD__) || defined(TCP6)
extern size_t ipsec6_hdrsiz_tcp __P((struct tcp6cb *));
#else
extern size_t ipsec6_hdrsiz_tcp __P((struct tcpcb *));
#endif
#endif
#endif
struct ip;
#ifdef INET6
struct ip6_hdr;
#endif
extern const char *ipsec4_logpacketstr __P((struct ip *, u_int32_t));
#ifdef INET6
extern const char *ipsec6_logpacketstr __P((struct ip6_hdr *, u_int32_t));
#endif
extern const char *ipsec_logsastr __P((struct secas *));
extern void ipsec_dumpmbuf __P((struct mbuf *));
extern int ipsec4_output __P((struct ipsec_output_state *, struct secpolicy *,
int));
#ifdef INET6
extern int ipsec6_output_trans __P((struct ipsec_output_state *, u_char *,
struct mbuf *, struct secpolicy *, int, int *));
extern int ipsec6_output_tunnel __P((struct ipsec_output_state *,
struct secpolicy *, int));
#endif
extern int ipsec4_tunnel_validate __P((struct ip *, u_int, struct secas *));
#ifdef INET6
extern int ipsec6_tunnel_validate __P((struct ip6_hdr *, u_int,
struct secas *));
#endif
extern struct mbuf *ipsec_copypkt __P((struct mbuf *));
#if defined(__bsdi__) || defined(__NetBSD__)
extern int ipsec_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
extern int ipsec6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
#endif /* __bsdi__ || __NetBSD__ */
#endif /*KERNEL*/
#ifndef KERNEL
extern int ipsec_get_policylen(char *reqstr);
extern int ipsec_set_policy(char *buf, int len, char *reqstr);
extern char *ipsec_dump_policy(char *buf, char *delimiter);
extern char *ipsec_strerror(void);
#endif /*!KERNEL*/
#endif /*_NETINET6_IPSEC_H_*/
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