--- /dev/null
+/*!\file netinet6/ipsec.h
+ *
+ */
+
+/* $FreeBSD: src/sys/netinet6/ipsec.h,v 1.9 2002/04/19 04:46:23 suz Exp $ */
+/* $KAME: ipsec.h,v 1.53 2001/11/20 08:32:38 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(_KERNEL) && !defined(_LKM) && !defined(KLD_MODULE)
+#include "opt_inet.h"
+#include "opt_ipsec.h"
+#endif
+
+#include <net/pfkeyv2.h>
+#include <netkey/keydb.h>
+
+#ifdef _KERNEL
+
+/*
+ * Security Policy Index
+ * Ensure that both address families in the "src" and "dst" are same.
+ * When the value of the ul_proto is ICMPv6, the port field in "src"
+ * specifies ICMPv6 type, and the port field in "dst" specifies ICMPv6 code.
+ */
+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.*/
+
+ /*
+ * lifetime handler.
+ * the policy can be used without limitiation if both lifetime and
+ * validtime are zero.
+ * "lifetime" is passed by sadb_lifetime.sadb_lifetime_addtime.
+ * "validtime" is passed by sadb_lifetime.sadb_lifetime_usetime.
+ */
+ long created; /* time created the policy */
+ long lastused; /* updated every when kernel sends a packet */
+ long lifetime; /* duration of the lifetime of this policy */
+ long validtime; /* duration this policy is valid without use */
+};
+
+/* 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 allowed for setsockopt() in PCB,
+ * DISCARD, IPSEC and NONE are allowed for setkey() in SPD.
+ * DISCARD and NONE are allowed 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_ESP_RANDPAD 13
+#define IPSECCTL_MAXID 14
+
+#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 }, \
+ { "esp_randpad", 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 }, \
+ { "esp_randpad", CTLTYPE_INT }, \
+}
+
+#ifdef _KERNEL
+struct ipsec_output_state {
+ struct mbuf *m;
+ struct route *ro;
+ struct sockaddr *dst;
+};
+
+struct ipsec_history {
+ int ih_proto;
+ u_int32_t ih_spi;
+};
+
+extern int ipsec_debug;
+
+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;
+extern int ip4_esp_randpad;
+
+#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 *));
+
+struct inpcb;
+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 *));
+
+struct secas;
+struct tcpcb;
+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 ipsec_hdrsiz_tcp __P((struct tcpcb *));
+
+struct ip;
+extern const char *ipsec4_logpacketstr __P((struct ip *, u_int32_t));
+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));
+extern int ipsec4_tunnel_validate __P((struct mbuf *, int, u_int,
+ struct secasvar *));
+extern struct mbuf *ipsec_copypkt __P((struct mbuf *));
+extern void ipsec_delaux __P((struct mbuf *));
+extern int ipsec_setsocket __P((struct mbuf *, struct socket *));
+extern struct socket *ipsec_getsocket __P((struct mbuf *));
+extern int ipsec_addhist __P((struct mbuf *, int, u_int32_t));
+extern struct ipsec_history *ipsec_gethist __P((struct mbuf *, int *));
+extern void ipsec_clearhist __P((struct mbuf *));
+#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_ */
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