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- /* $KAME: ipsec.h,v 1.28 2000/03/15 13:07:57 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_
-
- #include <net/pfkeyv2.h>
- #include <netkey/keydb.h>
-
- #if KERNEL
- /*
- * Security Policy Index
- * NOTE: Encure 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;
-
- u_int32_t tick; /* 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 */
- #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_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 }, \
- { "inbound_call_ike", CTLTYPE_INT }, \
- { "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 }, \
- { "inbound_call_ike", CTLTYPE_INT }, \
- { 0, 0 }, \
- { 0, 0 }, \
- { 0, 0 }, \
- { "ecn", CTLTYPE_INT }, \
- { "debug", CTLTYPE_INT }, \
- }
-
- #ifdef __bsdi__
- #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, \
- &ipsec_debug, \
- }
-
- #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, \
- &ipsec_debug, \
- }
- #endif
-
- #if KERNEL
- struct ipsec_output_state {
- struct mbuf *m;
- struct route *ro;
- struct sockaddr *dst;
- };
-
- extern int ipsec_debug;
-
- #if 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_inbound_call_ike;
- extern int ip4_ah_cleartos;
- extern int ip4_ah_offsetmask;
- extern int ip4_ipsec_dfbit;
- extern int ip4_ipsec_ecn;
- #endif
-
- #if 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
-
- #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 *));
-
- #if 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;
- #if 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 *));
-
- #if INET6
- extern int ipsec6_in_reject_so __P((struct mbuf *, struct socket *));
- #if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
- extern int ipsec6_delete_pcbpolicy __P((struct inpcb *));
- extern int ipsec6_set_policy __P((struct inpcb *inp, int optname,
- caddr_t request, size_t len, int priv));
- extern int ipsec6_get_policy
- __P((struct inpcb *inp, caddr_t request, size_t len, struct mbuf **mp));
- extern int ipsec6_in_reject __P((struct mbuf *, struct inpcb *));
- #else
- 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
- #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 *));
- #if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
- extern size_t ipsec_hdrsiz_tcp __P((struct tcpcb *, int));
- #else
- extern size_t ipsec4_hdrsiz_tcp __P((struct tcpcb *));
- #endif
- #if INET6
- #if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
- extern size_t ipsec6_hdrsiz __P((struct mbuf *, u_int, struct inpcb *));
- #else
- extern size_t ipsec6_hdrsiz __P((struct mbuf *, u_int, struct in6pcb *));
- #if defined(__NetBSD__) && !defined(TCP6)
- extern size_t ipsec6_hdrsiz_tcp __P((struct tcpcb *));
- #else
- extern size_t ipsec6_hdrsiz_tcp __P((struct tcp6cb *));
- #endif
- #endif
- #endif
-
- struct ip;
- #if INET6
- struct ip6_hdr;
- #endif
- extern const char *ipsec4_logpacketstr __P((struct ip *, u_int32_t));
- #if 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));
- #if 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 *));
- #if 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 *));
-
- #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 caddr_t ipsec_set_policy __P((char *policy, int buflen));
- extern int ipsec_get_policylen __P((caddr_t buf));
- extern char *ipsec_dump_policy __P((caddr_t buf, char *delimiter));
-
- extern char *ipsec_strerror __P((void));
- #endif /*!KERNEL*/
-
- #endif /*_NETINET6_IPSEC_H_*/
-