reactos/include/ddk/pfhook.h

   1 /*
   2  * pfhook.h
   3  *
   4  * Packet filter API
   5  *
   6  * This file is part of the w32api package.
   7  *
   8  * Contributors:
   9  *   Created by Casper S. Hornstrup <chorns@users.sourceforge.net>
  10  *
  11  * THIS SOFTWARE IS NOT COPYRIGHTED
  12  *
  13  * This source code is offered for use in the public domain. You may
  14  * use, modify or distribute it freely.
  15  *
  16  * This code is distributed in the hope that it will be useful but
  17  * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
  18  * DISCLAIMED. This includes but is not limited to warranties of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  20  *
  21  */
  22
  23 #ifndef __PFHOOK_H
  24 #define __PFHOOK_H
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 #define DD_IPFLTRDRVR_DEVICE_NAME         L"\\Device\\IPFILTERDRIVER"
  31
  32 #define INVALID_PF_IF_INDEX               0xffffffff
  33 #define ZERO_PF_IP_ADDR                   0
  34
  35 typedef ULONG IPAddr;
  36
  37 typedef enum _PF_FORWARD_ACTION {
  38         PF_FORWARD = 0,
  39         PF_DROP = 1,
  40         PF_PASS = 2,
  41         PF_ICMP_ON_DROP = 3
  42 } PF_FORWARD_ACTION;
  43
  44 typedef PF_FORWARD_ACTION
  45 (NTAPI *PacketFilterExtensionPtr)(
  46   IN unsigned char  *PacketHeader,
  47   IN unsigned char  *Packet,
  48   IN unsigned int  PacketLength,
  49   IN unsigned int  RecvInterfaceIndex,
  50   IN unsigned int  SendInterfaceIndex,
  51   IN IPAddr  RecvLinkNextHop,
  52   IN IPAddr  SendLinkNextHop);
  53
  54 typedef struct _PF_SET_EXTENSION_HOOK_INFO {
  55   PacketFilterExtensionPtr  ExtensionPointer;
  56 } PF_SET_EXTENSION_HOOK_INFO, *PPF_SET_EXTENSION_HOOK_INFO;
  57
  58 #define FSCTL_IPFLTRDRVR_BASE             FILE_DEVICE_NETWORK
  59
  60 #define _IPFLTRDRVR_CTL_CODE(function, method, access) \
  61   CTL_CODE(FSCTL_IPFLTRDRVR_BASE, function, method, access)
  62
  63 #define IOCTL_PF_SET_EXTENSION_POINTER \
  64   _IPFLTRDRVR_CTL_CODE(22, METHOD_BUFFERED, FILE_WRITE_ACCESS)
  65
  66 #ifdef __cplusplus
  67 }
  68 #endif
  69
  70 #endif /* __PFHOOK_H */