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dda10d624c
If packet leaves ipfw to other kernel subsystem (dummynet, netgraph, etc) it carries pointer to matching ipfw rule. If this packet then reinjected back to ipfw, ruleset processing starts from that rule. If rule was deleted meanwhile, due to existed race condition panic was possible (as well as other odd effects like parsing rules in 'reap list'). P.S. this commit changes ABI so userland ipfw related binaries should be recompiled. MFC after: 1 month Tested by: Mikolaj Golub
52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
/*-
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* Copyright 2005, Gleb Smirnoff <glebius@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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* 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 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 AUTHOR 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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* $FreeBSD$
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*/
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#define NG_IPFW_NODE_TYPE "ipfw"
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#define NGM_IPFW_COOKIE 1105988990
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#ifdef _KERNEL
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typedef int ng_ipfw_input_t(struct mbuf **, int, struct ip_fw_args *, int);
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extern ng_ipfw_input_t *ng_ipfw_input_p;
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#define NG_IPFW_LOADED (ng_ipfw_input_p != NULL)
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struct ng_ipfw_tag {
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struct m_tag mt; /* tag header */
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struct ip_fw *rule; /* matching rule */
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uint32_t rule_id; /* matching rule id */
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uint32_t chain_id; /* ruleset id */
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struct ifnet *ifp; /* interface, for ip_output */
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int dir;
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#define NG_IPFW_OUT 0
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#define NG_IPFW_IN 1
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};
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#define TAGSIZ (sizeof(struct ng_ipfw_tag) - sizeof(struct m_tag))
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#endif /* _KERNEL */
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