7029da5c36
r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are still not MPSAFE (or already are but aren’t properly marked). Use it in preparation for a general review of all nodes. This is non-functional change that adds annotations to SYSCTL_NODE and SYSCTL_PROC nodes using one of the soon-to-be-required flags. Mark all obvious cases as MPSAFE. All entries that haven't been marked as MPSAFE before are by default marked as NEEDGIANT Approved by: kib (mentor, blanket) Commented by: kib, gallatin, melifaro Differential Revision: https://reviews.freebsd.org/D23718
155 lines
4.4 KiB
C
155 lines
4.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2015-2019 Yandex LLC
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* Copyright (c) 2015-2019 Andrey V. Elsukov <ae@FreeBSD.org>
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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 <sys/sysctl.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 "ip_fw_nat64.h"
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#include "nat64_translate.h"
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VNET_DEFINE(int, nat64_debug) = 0;
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SYSCTL_DECL(_net_inet_ip_fw);
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SYSCTL_INT(_net_inet_ip_fw, OID_AUTO, nat64_debug, CTLFLAG_VNET | CTLFLAG_RW,
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&VNET_NAME(nat64_debug), 0, "Debug level for NAT64 module");
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static int
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sysctl_direct_output(SYSCTL_HANDLER_ARGS)
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{
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uint32_t value;
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int error;
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value = nat64_get_output_method();
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error = sysctl_handle_32(oidp, &value, 0, req);
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/* Read operation or some error */
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if ((error != 0) || (req->newptr == NULL))
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return (error);
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nat64_set_output_method(value);
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return (0);
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}
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SYSCTL_PROC(_net_inet_ip_fw, OID_AUTO, nat64_direct_output,
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CTLFLAG_VNET | CTLTYPE_U32 | CTLFLAG_RW | CTLFLAG_NEEDGIANT,
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0, 0, sysctl_direct_output, "IU",
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"Use if_output directly instead of deffered netisr-based processing");
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static int
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vnet_ipfw_nat64_init(const void *arg __unused)
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{
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struct ip_fw_chain *ch;
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int first, error;
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ch = &V_layer3_chain;
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first = IS_DEFAULT_VNET(curvnet) ? 1: 0;
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/* Initialize V_nat64out methods explicitly. */
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nat64_set_output_method(0);
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error = nat64stl_init(ch, first);
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if (error != 0)
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return (error);
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error = nat64clat_init(ch, first);
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if (error != 0) {
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nat64stl_uninit(ch, first);
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return (error);
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}
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error = nat64lsn_init(ch, first);
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if (error != 0) {
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nat64stl_uninit(ch, first);
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nat64clat_uninit(ch, first);
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return (error);
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}
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return (0);
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}
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static int
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vnet_ipfw_nat64_uninit(const void *arg __unused)
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{
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struct ip_fw_chain *ch;
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int last;
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ch = &V_layer3_chain;
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last = IS_DEFAULT_VNET(curvnet) ? 1: 0;
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nat64stl_uninit(ch, last);
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nat64clat_uninit(ch, last);
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nat64lsn_uninit(ch, last);
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return (0);
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}
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static int
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ipfw_nat64_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_nat64_mod = {
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"ipfw_nat64",
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ipfw_nat64_modevent,
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0
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};
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/* Define startup order. */
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#define IPFW_NAT64_SI_SUB_FIREWALL SI_SUB_PROTO_IFATTACHDOMAIN
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#define IPFW_NAT64_MODEVENT_ORDER (SI_ORDER_ANY - 128) /* after ipfw */
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#define IPFW_NAT64_MODULE_ORDER (IPFW_NAT64_MODEVENT_ORDER + 1)
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#define IPFW_NAT64_VNET_ORDER (IPFW_NAT64_MODEVENT_ORDER + 2)
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DECLARE_MODULE(ipfw_nat64, ipfw_nat64_mod, IPFW_NAT64_SI_SUB_FIREWALL,
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SI_ORDER_ANY);
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MODULE_DEPEND(ipfw_nat64, ipfw, 3, 3, 3);
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MODULE_VERSION(ipfw_nat64, 1);
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VNET_SYSINIT(vnet_ipfw_nat64_init, IPFW_NAT64_SI_SUB_FIREWALL,
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IPFW_NAT64_VNET_ORDER, vnet_ipfw_nat64_init, NULL);
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VNET_SYSUNINIT(vnet_ipfw_nat64_uninit, IPFW_NAT64_SI_SUB_FIREWALL,
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IPFW_NAT64_VNET_ORDER, vnet_ipfw_nat64_uninit, NULL);
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