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Diffstat (limited to 'sys/netinet6/ipsec.h')
| -rw-r--r-- | sys/netinet6/ipsec.h | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/sys/netinet6/ipsec.h b/sys/netinet6/ipsec.h new file mode 100644 index 0000000..6fdcba1 --- /dev/null +++ b/sys/netinet6/ipsec.h @@ -0,0 +1,314 @@ +/* + * 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. + * + * $FreeBSD$ + */ + +/* + * IPsec controller part. + */ + +#ifndef _NETINET6_IPSEC_H_ +#define _NETINET6_IPSEC_H_ + +#include <net/pfkeyv2.h> +#include <netkey/keydb.h> + +#ifdef 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 */ +}; + +/* Security Policy Data Base */ +struct secpolicy { + LIST_ENTRY(secpolicy) chain; + + int refcnt; /* reference count */ + struct secpolicyindex spidx; /* selector */ + 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; + 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 ? */ +}; +#endif /*KERNEL*/ + +#define IPSEC_PORT_ANY 65535 +#define IPSEC_ULPROTO_ANY 255 +#define IPSEC_PROTO_ANY 65535 + +/* 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_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; + +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, int priv)); +extern int ipsec4_get_policy + __P((struct inpcb *inpcb, caddr_t request, 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; +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 ipsec_hdrsiz_tcp __P((struct tcpcb *, int)); + +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 ip *, u_int, + struct secasvar *)); + +extern struct mbuf *ipsec_copypkt __P((struct mbuf *)); + +#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_*/ + |
