390 lines
12 KiB
C
390 lines
12 KiB
C
/* $NetBSD: ipsec.h,v 1.16 2000/09/22 16:55:04 itojun Exp $ */
|
|
/* $KAME: ipsec.h,v 1.36 2000/08/02 17:58:25 sakane 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(_KERNEL) && !defined(_LKM)
|
|
#include "opt_inet.h"
|
|
#endif
|
|
|
|
#include <net/pfkeyv2.h>
|
|
#include <netkey/keydb.h>
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/*
|
|
* Security Policy Index
|
|
* NOTE: Ensure to be same address family and upper layer protocol.
|
|
* NOTE: ul_proto, port number, uid, gid:
|
|
* ANY: reserved for waldcard.
|
|
* 0 to (~0 - 1): is one of the number of each value.
|
|
*/
|
|
struct secpolicyindex {
|
|
u_int8_t dir; /* direction of packet flow, see blow */
|
|
struct sockaddr_storage src; /* IP src address for SP */
|
|
struct sockaddr_storage dst; /* IP dst address for SP */
|
|
u_int8_t prefs; /* prefix length in bits for src */
|
|
u_int8_t prefd; /* prefix length in bits for dst */
|
|
u_int16_t ul_proto; /* upper layer Protocol */
|
|
#ifdef notyet
|
|
uid_t uids;
|
|
uid_t uidd;
|
|
gid_t gids;
|
|
gid_t gidd;
|
|
#endif
|
|
};
|
|
|
|
/* Security Policy Data Base */
|
|
struct secpolicy {
|
|
LIST_ENTRY(secpolicy) chain;
|
|
|
|
int refcnt; /* reference count */
|
|
struct secpolicyindex spidx; /* selector */
|
|
u_int32_t id; /* It's unique number on the system. */
|
|
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 NULL, it means the end of chain. */
|
|
struct secasindex saidx;/* hint for search proper SA */
|
|
/* if __ss_len == 0 then no address specified.*/
|
|
u_int level; /* IPsec level defined below. */
|
|
|
|
struct secasvar *sav; /* place holder of SA for use */
|
|
struct secpolicy *sp; /* back pointer to SP */
|
|
};
|
|
|
|
/* security policy in PCB */
|
|
struct inpcbpolicy {
|
|
struct secpolicy *sp_in;
|
|
struct secpolicy *sp_out;
|
|
int priv; /* privileged socket ? */
|
|
};
|
|
|
|
/* SP acquiring list table. */
|
|
struct secspacq {
|
|
LIST_ENTRY(secspacq) chain;
|
|
|
|
struct secpolicyindex spidx;
|
|
|
|
long created; /* for lifetime */
|
|
int count; /* for lifetime */
|
|
/* XXX: here is mbuf place holder to be sent ? */
|
|
};
|
|
#endif /*_KERNEL*/
|
|
|
|
/* according to IANA assignment, port 0x0000 and proto 0xff are reserved. */
|
|
#define IPSEC_PORT_ANY 0
|
|
#define IPSEC_ULPROTO_ANY 255
|
|
#define IPSEC_PROTO_ANY 255
|
|
|
|
/* mode of security protocol */
|
|
/* NOTE: DON'T use IPSEC_MODE_ANY at SPD. It's only use in SAD */
|
|
#define IPSEC_MODE_ANY 0 /* i.e. wildcard. */
|
|
#define IPSEC_MODE_TRANSPORT 1
|
|
#define IPSEC_MODE_TUNNEL 2
|
|
|
|
/*
|
|
* Direction of security policy.
|
|
* NOTE: Since INVALID is used just as flag.
|
|
* The other are used for loop counter too.
|
|
*/
|
|
#define IPSEC_DIR_ANY 0
|
|
#define IPSEC_DIR_INBOUND 1
|
|
#define IPSEC_DIR_OUTBOUND 2
|
|
#define IPSEC_DIR_MAX 3
|
|
#define IPSEC_DIR_INVALID 4
|
|
|
|
/* 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_LEVEL_UNIQUE 3 /* unique SA. */
|
|
|
|
#define IPSEC_MANUAL_REQID_MAX 0x3fff
|
|
/*
|
|
* if security policy level == unique, this id
|
|
* indicate to a relative SA for use, else is
|
|
* zero.
|
|
* 1 - 0x3fff are reserved for manual keying.
|
|
* 0 are reserved for above reason. Others is
|
|
* for kernel use.
|
|
* Note that this id doesn't identify SA
|
|
* by only itself.
|
|
*/
|
|
#define IPSEC_REPLAYWSIZE 32
|
|
|
|
/* statistics for ipsec processing */
|
|
struct ipsecstat {
|
|
u_quad_t in_success; /* succeeded inbound process */
|
|
u_quad_t in_polvio;
|
|
/* security policy violation for inbound process */
|
|
u_quad_t in_nosa; /* inbound SA is unavailable */
|
|
u_quad_t in_inval; /* inbound processing failed due to EINVAL */
|
|
u_quad_t in_nomem; /* inbound processing failed due to ENOBUFS */
|
|
u_quad_t in_badspi; /* failed getting a SPI */
|
|
u_quad_t in_ahreplay; /* AH replay check failed */
|
|
u_quad_t in_espreplay; /* ESP replay check failed */
|
|
u_quad_t in_ahauthsucc; /* AH authentication success */
|
|
u_quad_t in_ahauthfail; /* AH authentication failure */
|
|
u_quad_t in_espauthsucc; /* ESP authentication success */
|
|
u_quad_t in_espauthfail; /* ESP authentication failure */
|
|
u_quad_t in_esphist[256];
|
|
u_quad_t in_ahhist[256];
|
|
u_quad_t in_comphist[256];
|
|
u_quad_t out_success; /* succeeded outbound process */
|
|
u_quad_t out_polvio;
|
|
/* security policy violation for outbound process */
|
|
u_quad_t out_nosa; /* outbound SA is unavailable */
|
|
u_quad_t out_inval; /* outbound process failed due to EINVAL */
|
|
u_quad_t out_nomem; /* inbound processing failed due to ENOBUFS */
|
|
u_quad_t out_noroute; /* there is no route */
|
|
u_quad_t out_esphist[256];
|
|
u_quad_t out_ahhist[256];
|
|
u_quad_t out_comphist[256];
|
|
};
|
|
|
|
/*
|
|
* 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 */
|
|
#if 0 /*obsolete, do not reuse*/
|
|
#define IPSECCTL_INBOUND_CALL_IKE 7
|
|
#endif
|
|
#define IPSECCTL_AH_CLEARTOS 8
|
|
#define IPSECCTL_AH_OFFSETMASK 9
|
|
#define IPSECCTL_DFBIT 10
|
|
#define IPSECCTL_ECN 11
|
|
#define IPSECCTL_DEBUG 12
|
|
#define IPSECCTL_MAXID 13
|
|
|
|
#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 }, \
|
|
{ 0, 0 }, \
|
|
{ "ah_cleartos", CTLTYPE_INT }, \
|
|
{ "ah_offsetmask", CTLTYPE_INT }, \
|
|
{ "dfbit", CTLTYPE_INT }, \
|
|
{ "ecn", CTLTYPE_INT }, \
|
|
{ "debug", 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 }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ "ecn", CTLTYPE_INT }, \
|
|
{ "debug", CTLTYPE_INT }, \
|
|
}
|
|
|
|
#ifdef _KERNEL
|
|
struct ipsec_output_state {
|
|
struct mbuf *m;
|
|
struct route *ro;
|
|
struct sockaddr *dst;
|
|
};
|
|
|
|
extern int ipsec_debug;
|
|
|
|
#ifdef INET
|
|
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_ah_cleartos;
|
|
extern int ip4_ah_offsetmask;
|
|
extern int ip4_ipsec_dfbit;
|
|
extern int ip4_ipsec_ecn;
|
|
#endif
|
|
|
|
#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_ipsec_ecn;
|
|
#endif
|
|
|
|
#define ipseclog(x) do { if (ipsec_debug) log x; } while (0)
|
|
|
|
extern struct secpolicy *ipsec4_getpolicybysock
|
|
__P((struct mbuf *, u_int, struct socket *, int *));
|
|
extern struct secpolicy *ipsec4_getpolicybyaddr
|
|
__P((struct mbuf *, u_int, int, int *));
|
|
|
|
#ifdef INET6
|
|
extern struct secpolicy *ipsec6_getpolicybysock
|
|
__P((struct mbuf *, u_int, struct socket *, int *));
|
|
extern struct secpolicy *ipsec6_getpolicybyaddr
|
|
__P((struct mbuf *, u_int, int, int *));
|
|
#endif /*INET6*/
|
|
|
|
struct inpcb;
|
|
#ifdef INET6
|
|
struct in6pcb;
|
|
#endif
|
|
extern int ipsec_init_policy __P((struct socket *so, struct inpcbpolicy **));
|
|
extern int ipsec_copy_policy
|
|
__P((struct inpcbpolicy *, struct inpcbpolicy *));
|
|
extern u_int ipsec_get_reqlevel __P((struct ipsecrequest *));
|
|
|
|
extern int ipsec4_set_policy __P((struct inpcb *inp, int optname,
|
|
caddr_t request, size_t len, int priv));
|
|
extern int ipsec4_get_policy __P((struct inpcb *inpcb, caddr_t request,
|
|
size_t len, struct mbuf **mp));
|
|
extern int ipsec4_delete_pcbpolicy __P((struct inpcb *));
|
|
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 *));
|
|
extern int ipsec6_delete_pcbpolicy __P((struct in6pcb *));
|
|
extern int ipsec6_set_policy __P((struct in6pcb *in6p, int optname,
|
|
caddr_t request, size_t len, int priv));
|
|
extern int ipsec6_get_policy __P((struct in6pcb *in6p, caddr_t request,
|
|
size_t len, struct mbuf **mp));
|
|
extern int ipsec6_in_reject __P((struct mbuf *, struct in6pcb *));
|
|
#endif /*INET6*/
|
|
|
|
struct secas;
|
|
struct tcpcb;
|
|
struct tcp6cb;
|
|
extern int ipsec_chkreplay __P((u_int32_t, struct secasvar *));
|
|
extern int ipsec_updatereplay __P((u_int32_t, struct secasvar *));
|
|
|
|
extern size_t ipsec4_hdrsiz __P((struct mbuf *, u_int, struct inpcb *));
|
|
extern size_t ipsec4_hdrsiz_tcp __P((struct tcpcb *));
|
|
#ifdef INET6
|
|
extern size_t ipsec6_hdrsiz __P((struct mbuf *, u_int, struct in6pcb *));
|
|
#ifndef TCP6
|
|
extern size_t ipsec6_hdrsiz_tcp __P((struct tcpcb *));
|
|
#else
|
|
extern size_t ipsec6_hdrsiz_tcp __P((struct tcp6cb *));
|
|
#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 secasvar *));
|
|
|
|
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 secasvar *));
|
|
#ifdef INET6
|
|
extern int ipsec6_tunnel_validate __P((struct ip6_hdr *, u_int,
|
|
struct secasvar *));
|
|
#endif
|
|
extern struct mbuf *ipsec_copypkt __P((struct mbuf *));
|
|
extern void ipsec_setsocket __P((struct mbuf *, struct socket *));
|
|
extern struct socket *ipsec_getsocket __P((struct mbuf *));
|
|
|
|
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 /*_KERNEL*/
|
|
|
|
#ifndef _KERNEL
|
|
extern caddr_t ipsec_set_policy __P((char *, int));
|
|
extern int ipsec_get_policylen __P((caddr_t));
|
|
extern char *ipsec_dump_policy __P((caddr_t, char *));
|
|
|
|
extern const char *ipsec_strerror __P((void));
|
|
#endif /*!_KERNEL*/
|
|
|
|
#endif /*_NETINET6_IPSEC_H_*/
|