7ecc6a9247
Some functions in lib/libc/net were disabled on MINIX3 only, but with a few added header files they build just fine, even though some of them rely on system functionality that has not yet been implemented. Since the functionality is unlikely to be used in practice (because it typically requires the use of protocol families that themselves are not yet supported, such as IPv6), already enabling it right now helps in building packages that rely on the functionality being present at compile time, while not posing any practical risk of breaking the same packages at run time. Change-Id: Idee8e3963c9e300bde9575429f0e77b0565acaef
74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
/* $NetBSD: pfil.h,v 1.31 2013/06/29 21:06:58 rmind Exp $ */
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/*
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* Copyright (c) 1996 Matthew R. Green
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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 ``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,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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#ifndef _NET_PFIL_H_
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#define _NET_PFIL_H_
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#include <sys/queue.h>
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struct mbuf;
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struct ifnet;
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/*
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* The packet filter hooks are designed for anything to call them to
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* possibly intercept the packet.
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*/
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typedef int (*pfil_func_t)(void *, struct mbuf **, struct ifnet *, int);
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#define PFIL_IN 0x00000001
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#define PFIL_OUT 0x00000002
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#define PFIL_ALL (PFIL_IN|PFIL_OUT)
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#define PFIL_IFADDR 0x00000008
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#define PFIL_IFNET 0x00000010
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/* events notified by PFIL_IFNET */
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#define PFIL_IFNET_ATTACH 0
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#define PFIL_IFNET_DETACH 1
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#define PFIL_TYPE_AF 1 /* key is AF_* type */
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#define PFIL_TYPE_IFNET 2 /* key is ifnet pointer */
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typedef struct pfil_head pfil_head_t;
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#ifdef _KERNEL
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int pfil_run_hooks(pfil_head_t *, struct mbuf **, struct ifnet *, int);
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int pfil_add_hook(pfil_func_t, void *, int, pfil_head_t *);
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int pfil_remove_hook(pfil_func_t, void *, int, pfil_head_t *);
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pfil_head_t * pfil_head_create(int, void *);
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void pfil_head_destroy(pfil_head_t *);
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pfil_head_t * pfil_head_get(int, void *);
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/* Packet filtering hook for interfaces (in sys/net/if.c module). */
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extern pfil_head_t *if_pfil;
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#endif /* _KERNEL */
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#endif /* !_NET_PFIL_H_ */
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