b867e84e95
as defined in RFC 6296. The module works together with ipfw(4) and implemented as its external action module. When it is loaded, it registers as eaction and can be used in rules. The usage pattern is similar to ipfw_nat(4). All matched by rule traffic goes to the NPT module. Reviewed by: hrs Obtained from: Yandex LLC MFC after: 1 month Relnotes: yes Sponsored by: Yandex LLC Differential Revision: https://reviews.freebsd.org/D6420
100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
/*-
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* Copyright (c) 2016 Yandex LLC
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* Copyright (c) 2016 Andrey V. Elsukov <ae@FreeBSD.org>
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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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*
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/rwlock.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/vnet.h>
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#include <netinet/in.h>
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#include <netinet/ip_var.h>
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#include <netinet/ip_fw.h>
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#include <netpfil/ipfw/ip_fw_private.h>
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#include <netpfil/ipfw/nptv6/nptv6.h>
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static int
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vnet_ipfw_nptv6_init(const void *arg __unused)
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{
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return (nptv6_init(&V_layer3_chain, IS_DEFAULT_VNET(curvnet)));
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}
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static int
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vnet_ipfw_nptv6_uninit(const void *arg __unused)
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{
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nptv6_uninit(&V_layer3_chain, IS_DEFAULT_VNET(curvnet));
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return (0);
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}
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static int
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ipfw_nptv6_modevent(module_t mod, int type, void *unused)
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{
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switch (type) {
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case MOD_LOAD:
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case MOD_UNLOAD:
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break;
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default:
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return (EOPNOTSUPP);
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}
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return (0);
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}
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static moduledata_t ipfw_nptv6_mod = {
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"ipfw_nptv6",
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ipfw_nptv6_modevent,
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0
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};
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/* Define startup order. */
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#define IPFW_NPTV6_SI_SUB_FIREWALL SI_SUB_PROTO_IFATTACHDOMAIN
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#define IPFW_NPTV6_MODEVENT_ORDER (SI_ORDER_ANY - 128) /* after ipfw */
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#define IPFW_NPTV6_MODULE_ORDER (IPFW_NPTV6_MODEVENT_ORDER + 1)
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#define IPFW_NPTV6_VNET_ORDER (IPFW_NPTV6_MODEVENT_ORDER + 2)
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DECLARE_MODULE(ipfw_nptv6, ipfw_nptv6_mod, IPFW_NPTV6_SI_SUB_FIREWALL,
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IPFW_NPTV6_MODULE_ORDER);
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MODULE_DEPEND(ipfw_nptv6, ipfw, 3, 3, 3);
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MODULE_VERSION(ipfw_nptv6, 1);
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VNET_SYSINIT(vnet_ipfw_nptv6_init, IPFW_NPTV6_SI_SUB_FIREWALL,
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IPFW_NPTV6_VNET_ORDER, vnet_ipfw_nptv6_init, NULL);
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VNET_SYSUNINIT(vnet_ipfw_nptv6_uninit, IPFW_NPTV6_SI_SUB_FIREWALL,
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IPFW_NPTV6_VNET_ORDER, vnet_ipfw_nptv6_uninit, NULL);
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