Examples of depecrated algorithms in manual pages and sample configs are updated where relevant. I removed the one example of combining ESP and AH (vs using a cipher and auth in ESP) as RFC 8221 says this combination is NOT RECOMMENDED. Specifically, this removes support for the following ciphers: - des-cbc - 3des-cbc - blowfish-cbc - cast128-cbc - des-deriv - des-32iv - camellia-cbc This also removes support for the following authentication algorithms: - hmac-md5 - keyed-md5 - keyed-sha1 - hmac-ripemd160 Reviewed by: cem, gnn (older verisons) Relnotes: yes Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D24342
370 lines
12 KiB
C
370 lines
12 KiB
C
/* $FreeBSD$ */
|
|
/* $KAME: ipsec.h,v 1.53 2001/11/20 08:32:38 itojun Exp $ */
|
|
|
|
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* 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 _NETIPSEC_IPSEC_H_
|
|
#define _NETIPSEC_IPSEC_H_
|
|
|
|
#if defined(_KERNEL) && !defined(_LKM) && !defined(KLD_MODULE)
|
|
#include "opt_inet.h"
|
|
#include "opt_ipsec.h"
|
|
#endif
|
|
|
|
#include <net/pfkeyv2.h>
|
|
#include <netipsec/keydb.h>
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#include <sys/_lock.h>
|
|
#include <sys/_mutex.h>
|
|
#include <sys/_rwlock.h>
|
|
|
|
#define IPSEC_ASSERT(_c,_m) KASSERT(_c, _m)
|
|
|
|
/*
|
|
* 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 {
|
|
union sockaddr_union src; /* IP src address for SP */
|
|
union sockaddr_union dst; /* IP dst address for SP */
|
|
uint8_t ul_proto; /* upper layer Protocol */
|
|
uint8_t dir; /* direction of packet flow */
|
|
uint8_t prefs; /* prefix length in bits for src */
|
|
uint8_t prefd; /* prefix length in bits for dst */
|
|
};
|
|
|
|
/* Request for IPsec */
|
|
struct ipsecrequest {
|
|
struct secasindex saidx;/* hint for search proper SA */
|
|
/* if __ss_len == 0 then no address specified.*/
|
|
u_int level; /* IPsec level defined below. */
|
|
};
|
|
|
|
/* Security Policy Data Base */
|
|
struct secpolicy {
|
|
TAILQ_ENTRY(secpolicy) chain;
|
|
LIST_ENTRY(secpolicy) idhash;
|
|
LIST_ENTRY(secpolicy) drainq;
|
|
|
|
struct secpolicyindex spidx; /* selector */
|
|
#define IPSEC_MAXREQ 4
|
|
struct ipsecrequest *req[IPSEC_MAXREQ];
|
|
u_int tcount; /* IPsec transforms count */
|
|
volatile u_int refcnt; /* reference count */
|
|
u_int policy; /* policy_type per pfkeyv2.h */
|
|
u_int state;
|
|
#define IPSEC_SPSTATE_DEAD 0
|
|
#define IPSEC_SPSTATE_LARVAL 1
|
|
#define IPSEC_SPSTATE_ALIVE 2
|
|
#define IPSEC_SPSTATE_PCB 3
|
|
#define IPSEC_SPSTATE_IFNET 4
|
|
uint32_t priority; /* priority of this policy */
|
|
uint32_t id; /* It's unique number on the system. */
|
|
/*
|
|
* 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.
|
|
*/
|
|
time_t created; /* time created the policy */
|
|
time_t 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 */
|
|
};
|
|
|
|
/*
|
|
* PCB security policies.
|
|
* Application can setup private security policies for socket.
|
|
* Such policies can have IPSEC, BYPASS and ENTRUST type.
|
|
* By default, policies are set to NULL. This means that they have ENTRUST type.
|
|
* When application sets BYPASS or IPSEC type policy, the flags field
|
|
* is also updated. When flags is not set, the system could store
|
|
* used security policy into the sp_in/sp_out pointer to speed up further
|
|
* lookups.
|
|
*/
|
|
struct inpcbpolicy {
|
|
struct secpolicy *sp_in;
|
|
struct secpolicy *sp_out;
|
|
|
|
uint32_t genid;
|
|
uint16_t flags;
|
|
#define INP_INBOUND_POLICY 0x0001
|
|
#define INP_OUTBOUND_POLICY 0x0002
|
|
uint16_t hdrsz;
|
|
};
|
|
|
|
/* SP acquiring list table. */
|
|
struct secspacq {
|
|
LIST_ENTRY(secspacq) chain;
|
|
|
|
struct secpolicyindex spidx;
|
|
|
|
time_t created; /* for lifetime */
|
|
int count; /* for lifetime */
|
|
/* XXX: here is mbuf place holder to be sent ? */
|
|
};
|
|
#endif /* _KERNEL */
|
|
|
|
/* buffer size for formatted output of ipsec address */
|
|
#define IPSEC_ADDRSTRLEN (INET6_ADDRSTRLEN + 11)
|
|
|
|
/* 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
|
|
#define IPSEC_MODE_TCPMD5 3 /* TCP MD5 mode */
|
|
|
|
/*
|
|
* 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. */
|
|
|
|
/* Policy scope */
|
|
#define IPSEC_POLICYSCOPE_ANY 0x00 /* unspecified */
|
|
#define IPSEC_POLICYSCOPE_GLOBAL 0x01 /* global scope */
|
|
#define IPSEC_POLICYSCOPE_IFNET 0x02 /* if_ipsec(4) scope */
|
|
#define IPSEC_POLICYSCOPE_PCB 0x04 /* PCB scope */
|
|
|
|
/* 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 {
|
|
uint64_t ips_in_polvio; /* input: sec policy violation */
|
|
uint64_t ips_in_nomem; /* input: no memory available */
|
|
uint64_t ips_in_inval; /* input: generic error */
|
|
|
|
uint64_t ips_out_polvio; /* output: sec policy violation */
|
|
uint64_t ips_out_nosa; /* output: SA unavailable */
|
|
uint64_t ips_out_nomem; /* output: no memory available */
|
|
uint64_t ips_out_noroute; /* output: no route available */
|
|
uint64_t ips_out_inval; /* output: generic error */
|
|
uint64_t ips_out_bundlesa; /* output: bundled SA processed */
|
|
|
|
uint64_t ips_spdcache_hits; /* SPD cache hits */
|
|
uint64_t ips_spdcache_misses; /* SPD cache misses */
|
|
|
|
uint64_t ips_clcopied; /* clusters copied during clone */
|
|
uint64_t ips_mbinserted; /* mbufs inserted during makespace */
|
|
/*
|
|
* Temporary statistics for performance analysis.
|
|
*/
|
|
/* See where ESP/AH/IPCOMP header land in mbuf on input */
|
|
uint64_t ips_input_front;
|
|
uint64_t ips_input_middle;
|
|
uint64_t ips_input_end;
|
|
};
|
|
|
|
/*
|
|
* Definitions for IPsec & Key sysctl operations.
|
|
*/
|
|
#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
|
|
|
|
#ifdef _KERNEL
|
|
#include <sys/counter.h>
|
|
|
|
struct ipsec_ctx_data;
|
|
#define IPSEC_INIT_CTX(_ctx, _mp, _inp, _sav, _af, _enc) do { \
|
|
(_ctx)->mp = (_mp); \
|
|
(_ctx)->inp = (_inp); \
|
|
(_ctx)->sav = (_sav); \
|
|
(_ctx)->af = (_af); \
|
|
(_ctx)->enc = (_enc); \
|
|
} while(0)
|
|
int ipsec_run_hhooks(struct ipsec_ctx_data *ctx, int direction);
|
|
|
|
VNET_DECLARE(int, ipsec_debug);
|
|
#define V_ipsec_debug VNET(ipsec_debug)
|
|
|
|
#ifdef REGRESSION
|
|
VNET_DECLARE(int, ipsec_replay);
|
|
VNET_DECLARE(int, ipsec_integrity);
|
|
|
|
#define V_ipsec_replay VNET(ipsec_replay)
|
|
#define V_ipsec_integrity VNET(ipsec_integrity)
|
|
#endif
|
|
|
|
VNET_PCPUSTAT_DECLARE(struct ipsecstat, ipsec4stat);
|
|
VNET_DECLARE(int, ip4_esp_trans_deflev);
|
|
VNET_DECLARE(int, ip4_esp_net_deflev);
|
|
VNET_DECLARE(int, ip4_ah_trans_deflev);
|
|
VNET_DECLARE(int, ip4_ah_net_deflev);
|
|
VNET_DECLARE(int, ip4_ipsec_dfbit);
|
|
VNET_DECLARE(int, ip4_ipsec_ecn);
|
|
VNET_DECLARE(int, crypto_support);
|
|
VNET_DECLARE(int, async_crypto);
|
|
VNET_DECLARE(int, natt_cksum_policy);
|
|
|
|
#define IPSECSTAT_INC(name) \
|
|
VNET_PCPUSTAT_ADD(struct ipsecstat, ipsec4stat, name, 1)
|
|
#define V_ip4_esp_trans_deflev VNET(ip4_esp_trans_deflev)
|
|
#define V_ip4_esp_net_deflev VNET(ip4_esp_net_deflev)
|
|
#define V_ip4_ah_trans_deflev VNET(ip4_ah_trans_deflev)
|
|
#define V_ip4_ah_net_deflev VNET(ip4_ah_net_deflev)
|
|
#define V_ip4_ipsec_dfbit VNET(ip4_ipsec_dfbit)
|
|
#define V_ip4_ipsec_ecn VNET(ip4_ipsec_ecn)
|
|
#define V_crypto_support VNET(crypto_support)
|
|
#define V_async_crypto VNET(async_crypto)
|
|
#define V_natt_cksum_policy VNET(natt_cksum_policy)
|
|
|
|
#define ipseclog(x) do { if (V_ipsec_debug) log x; } while (0)
|
|
/* for openbsd compatibility */
|
|
#ifdef IPSEC_DEBUG
|
|
#define IPSEC_DEBUG_DECLARE(x) x
|
|
#define DPRINTF(x) do { if (V_ipsec_debug) printf x; } while (0)
|
|
#else
|
|
#define IPSEC_DEBUG_DECLARE(x)
|
|
#define DPRINTF(x)
|
|
#endif
|
|
|
|
struct inpcb;
|
|
struct m_tag;
|
|
struct secasvar;
|
|
struct sockopt;
|
|
struct tcphdr;
|
|
union sockaddr_union;
|
|
|
|
int ipsec_if_input(struct mbuf *, struct secasvar *, uint32_t);
|
|
|
|
struct ipsecrequest *ipsec_newisr(void);
|
|
void ipsec_delisr(struct ipsecrequest *);
|
|
struct secpolicy *ipsec4_checkpolicy(const struct mbuf *, struct inpcb *,
|
|
int *, int);
|
|
|
|
u_int ipsec_get_reqlevel(struct secpolicy *, u_int);
|
|
|
|
void udp_ipsec_adjust_cksum(struct mbuf *, struct secasvar *, int, int);
|
|
int udp_ipsec_output(struct mbuf *, struct secasvar *);
|
|
int udp_ipsec_input(struct mbuf *, int, int);
|
|
int udp_ipsec_pcbctl(struct inpcb *, struct sockopt *);
|
|
|
|
int ipsec_chkreplay(uint32_t, struct secasvar *);
|
|
int ipsec_updatereplay(uint32_t, struct secasvar *);
|
|
int ipsec_updateid(struct secasvar *, crypto_session_t *, crypto_session_t *);
|
|
int ipsec_initialized(void);
|
|
|
|
void ipsec_setspidx_inpcb(struct inpcb *, struct secpolicyindex *, u_int);
|
|
|
|
void ipsec4_setsockaddrs(const struct mbuf *, union sockaddr_union *,
|
|
union sockaddr_union *);
|
|
int ipsec4_in_reject(const struct mbuf *, struct inpcb *);
|
|
int ipsec4_input(struct mbuf *, int, int);
|
|
int ipsec4_forward(struct mbuf *);
|
|
int ipsec4_pcbctl(struct inpcb *, struct sockopt *);
|
|
int ipsec4_output(struct mbuf *, struct inpcb *);
|
|
int ipsec4_capability(struct mbuf *, u_int);
|
|
int ipsec4_common_input_cb(struct mbuf *, struct secasvar *, int, int);
|
|
int ipsec4_process_packet(struct mbuf *, struct secpolicy *, struct inpcb *);
|
|
int ipsec_process_done(struct mbuf *, struct secpolicy *, struct secasvar *,
|
|
u_int);
|
|
|
|
extern void m_checkalignment(const char* where, struct mbuf *m0,
|
|
int off, int len);
|
|
extern struct mbuf *m_makespace(struct mbuf *m0, int skip, int hlen, int *off);
|
|
extern caddr_t m_pad(struct mbuf *m, int n);
|
|
extern int m_striphdr(struct mbuf *m, int skip, int hlen);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#ifndef _KERNEL
|
|
extern caddr_t ipsec_set_policy(char *, int);
|
|
extern int ipsec_get_policylen(caddr_t);
|
|
extern char *ipsec_dump_policy(caddr_t, char *);
|
|
extern const char *ipsec_strerror(void);
|
|
|
|
#endif /* ! KERNEL */
|
|
|
|
#endif /* _NETIPSEC_IPSEC_H_ */
|