0fb6ad528e
Small summary
-------------
o Almost all IPsec releated code was moved into sys/netipsec.
o New kernel modules added: ipsec.ko and tcpmd5.ko. New kernel
option IPSEC_SUPPORT added. It enables support for loading
and unloading of ipsec.ko and tcpmd5.ko kernel modules.
o IPSEC_NAT_T option was removed. Now NAT-T support is enabled by
default. The UDP_ENCAP_ESPINUDP_NON_IKE encapsulation type
support was removed. Added TCP/UDP checksum handling for
inbound packets that were decapsulated by transport mode SAs.
setkey(8) modified to show run-time NAT-T configuration of SA.
o New network pseudo interface if_ipsec(4) added. For now it is
build as part of ipsec.ko module (or with IPSEC kernel).
It implements IPsec virtual tunnels to create route-based VPNs.
o The network stack now invokes IPsec functions using special
methods. The only one header file <netipsec/ipsec_support.h>
should be included to declare all the needed things to work
with IPsec.
o All IPsec protocols handlers (ESP/AH/IPCOMP protosw) were removed.
Now these protocols are handled directly via IPsec methods.
o TCP_SIGNATURE support was reworked to be more close to RFC.
o PF_KEY SADB was reworked:
- now all security associations stored in the single SPI namespace,
and all SAs MUST have unique SPI.
- several hash tables added to speed up lookups in SADB.
- SADB now uses rmlock to protect access, and concurrent threads
can do SA lookups in the same time.
- many PF_KEY message handlers were reworked to reflect changes
in SADB.
- SADB_UPDATE message was extended to support new PF_KEY headers:
SADB_X_EXT_NEW_ADDRESS_SRC and SADB_X_EXT_NEW_ADDRESS_DST. They
can be used by IKE daemon to change SA addresses.
o ipsecrequest and secpolicy structures were cardinally changed to
avoid locking protection for ipsecrequest. Now we support
only limited number (4) of bundled SAs, but they are supported
for both INET and INET6.
o INPCB security policy cache was introduced. Each PCB now caches
used security policies to avoid SP lookup for each packet.
o For inbound security policies added the mode, when the kernel does
check for full history of applied IPsec transforms.
o References counting rules for security policies and security
associations were changed. The proper SA locking added into xform
code.
o xform code was also changed. Now it is possible to unregister xforms.
tdb_xxx structures were changed and renamed to reflect changes in
SADB/SPDB, and changed rules for locking and refcounting.
Reviewed by: gnn, wblock
Obtained from: Yandex LLC
Relnotes: yes
Sponsored by: Yandex LLC
Differential Revision: https://reviews.freebsd.org/D9352
81 lines
3.2 KiB
C
81 lines
3.2 KiB
C
/* $FreeBSD$ */
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/* $KAME: ipsec.h,v 1.44 2001/03/23 08:08:47 itojun Exp $ */
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/*-
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* IPsec controller part.
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*/
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#ifndef _NETIPSEC_IPSEC6_H_
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#define _NETIPSEC_IPSEC6_H_
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#include <net/pfkeyv2.h>
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#include <netipsec/keydb.h>
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#ifdef _KERNEL
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#include <sys/counter.h>
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VNET_PCPUSTAT_DECLARE(struct ipsecstat, ipsec6stat);
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VNET_DECLARE(int, ip6_esp_trans_deflev);
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VNET_DECLARE(int, ip6_esp_net_deflev);
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VNET_DECLARE(int, ip6_ah_trans_deflev);
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VNET_DECLARE(int, ip6_ah_net_deflev);
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VNET_DECLARE(int, ip6_ipsec_ecn);
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#define IPSEC6STAT_INC(name) \
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VNET_PCPUSTAT_ADD(struct ipsecstat, ipsec6stat, name, 1)
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#define V_ip6_esp_trans_deflev VNET(ip6_esp_trans_deflev)
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#define V_ip6_esp_net_deflev VNET(ip6_esp_net_deflev)
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#define V_ip6_ah_trans_deflev VNET(ip6_ah_trans_deflev)
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#define V_ip6_ah_net_deflev VNET(ip6_ah_net_deflev)
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#define V_ip6_ipsec_ecn VNET(ip6_ipsec_ecn)
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struct inpcb;
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struct secpolicy *ipsec6_checkpolicy(const struct mbuf *,
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struct inpcb *, int *);
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void ipsec6_setsockaddrs(const struct mbuf *, union sockaddr_union *,
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union sockaddr_union *);
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int ipsec6_input(struct mbuf *, int, int);
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int ipsec6_in_reject(const struct mbuf *, struct inpcb *);
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int ipsec6_forward(struct mbuf *);
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int ipsec6_pcbctl(struct inpcb *, struct sockopt *);
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int ipsec6_output(struct mbuf *, struct inpcb *);
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int ipsec6_capability(struct mbuf *, u_int);
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int ipsec6_common_input_cb(struct mbuf *, struct secasvar *, int, int);
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int ipsec6_process_packet(struct mbuf *, struct secpolicy *, struct inpcb *);
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int ip6_ipsec_filtertunnel(struct mbuf *);
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int ip6_ipsec_pcbctl(struct inpcb *, struct sockopt *);
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#endif /*_KERNEL*/
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#endif /*_NETIPSEC_IPSEC6_H_*/
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