diff options
Diffstat (limited to 'freebsd/sys/netpfil/ipfw/nat64/ip_fw_nat64.c')
| -rw-r--r-- | freebsd/sys/netpfil/ipfw/nat64/ip_fw_nat64.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/freebsd/sys/netpfil/ipfw/nat64/ip_fw_nat64.c b/freebsd/sys/netpfil/ipfw/nat64/ip_fw_nat64.c new file mode 100644 index 00000000..03ca9599 --- /dev/null +++ b/freebsd/sys/netpfil/ipfw/nat64/ip_fw_nat64.c @@ -0,0 +1,131 @@ +#include <machine/rtems-bsd-kernel-space.h> + +/*- + * Copyright (c) 2015-2016 Yandex LLC + * Copyright (c) 2015-2016 Andrey V. Elsukov <ae@FreeBSD.org> + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <rtems/bsd/sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <rtems/bsd/sys/lock.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/rwlock.h> +#include <sys/socket.h> +#include <sys/sysctl.h> + +#include <net/if.h> +#include <net/vnet.h> + +#include <netinet/in.h> +#include <netinet/ip_var.h> +#include <netinet/ip_fw.h> + +#include <netpfil/ipfw/ip_fw_private.h> +#include <netpfil/ipfw/nat64/ip_fw_nat64.h> +#include <netpfil/ipfw/nat64/nat64_translate.h> + + +int nat64_debug = 0; +SYSCTL_DECL(_net_inet_ip_fw); +SYSCTL_INT(_net_inet_ip_fw, OID_AUTO, nat64_debug, CTLFLAG_RW, + &nat64_debug, 0, "Debug level for NAT64 module"); + +int nat64_allow_private = 0; +SYSCTL_INT(_net_inet_ip_fw, OID_AUTO, nat64_allow_private, CTLFLAG_RW, + &nat64_allow_private, 0, + "Allow use of non-global IPv4 addresses with NAT64"); + +static int +vnet_ipfw_nat64_init(const void *arg __unused) +{ + struct ip_fw_chain *ch; + int first, error; + + ch = &V_layer3_chain; + first = IS_DEFAULT_VNET(curvnet) ? 1: 0; + error = nat64stl_init(ch, first); + if (error != 0) + return (error); + error = nat64lsn_init(ch, first); + if (error != 0) { + nat64stl_uninit(ch, first); + return (error); + } + return (0); +} + +static int +vnet_ipfw_nat64_uninit(const void *arg __unused) +{ + struct ip_fw_chain *ch; + int last; + + ch = &V_layer3_chain; + last = IS_DEFAULT_VNET(curvnet) ? 1: 0; + nat64stl_uninit(ch, last); + nat64lsn_uninit(ch, last); + return (0); +} + +static int +ipfw_nat64_modevent(module_t mod, int type, void *unused) +{ + + switch (type) { + case MOD_LOAD: + case MOD_UNLOAD: + break; + default: + return (EOPNOTSUPP); + } + return (0); +} + +static moduledata_t ipfw_nat64_mod = { + "ipfw_nat64", + ipfw_nat64_modevent, + 0 +}; + +/* Define startup order. */ +#define IPFW_NAT64_SI_SUB_FIREWALL SI_SUB_PROTO_IFATTACHDOMAIN +#define IPFW_NAT64_MODEVENT_ORDER (SI_ORDER_ANY - 128) /* after ipfw */ +#define IPFW_NAT64_MODULE_ORDER (IPFW_NAT64_MODEVENT_ORDER + 1) +#define IPFW_NAT64_VNET_ORDER (IPFW_NAT64_MODEVENT_ORDER + 2) + +DECLARE_MODULE(ipfw_nat64, ipfw_nat64_mod, IPFW_NAT64_SI_SUB_FIREWALL, + SI_ORDER_ANY); +MODULE_DEPEND(ipfw_nat64, ipfw, 3, 3, 3); +MODULE_VERSION(ipfw_nat64, 1); + +VNET_SYSINIT(vnet_ipfw_nat64_init, IPFW_NAT64_SI_SUB_FIREWALL, + IPFW_NAT64_VNET_ORDER, vnet_ipfw_nat64_init, NULL); +VNET_SYSUNINIT(vnet_ipfw_nat64_uninit, IPFW_NAT64_SI_SUB_FIREWALL, + IPFW_NAT64_VNET_ORDER, vnet_ipfw_nat64_uninit, NULL); |