workbench/network/stacks/AROSTCP/bsdsocket/net/pfil.h

   1 /*      $FreeBSD: src/sys/net/pfil.h,v 1.11.2.2 2005/01/31 23:26:23 imp Exp $ */
   2 /*      $NetBSD: pfil.h,v 1.22 2003/06/23 12:57:08 martin Exp $ */
   3
   4 /*-
   5  * Copyright (c) 1996 Matthew R. Green
   6  * Copyright (c) 2005 - 2006 Pavel Fedin
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. The name of the author may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  25  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  27  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  28  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #ifndef _NET_PFIL_H_
  34 #define _NET_PFIL_H_
  35
  36 #include <sys/systm.h>
  37 #include <sys/queue.h>
  38
  39 /*
  40  * The packet filter hooks are designed for anything to call them to
  41  * possibly intercept the packet.
  42  */
  43 extern struct MinList pfil_list;
  44 extern struct SignalSemaphore pfil_list_lock;
  45
  46 struct packet_filter_hook {
  47         struct MinNode pfil_link;
  48         struct ifnet *pfil_if;
  49         struct Hook *pfil_hook;
  50         ULONG pfil_hooktype;
  51 };
  52
  53
  54 void    pfil_init(void);
  55 void    pfil_run_hooks(struct mbuf *, struct ifnet *, unsigned char);
  56
  57 #endif /* _NET_PFIL_H_ */
  58