reactos/drivers/network/tcpip/include/receive.h

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS TCP/IP protocol driver
   4  * FILE:        include/receive.h
   5  * PURPOSE:     Internet Protocol receive prototypes
   6  */
   7
   8 #pragma once
   9
  10 #include <ip.h>
  11
  12 /* Number of seconds before destroying the IPDR */
  13 #define MAX_TIMEOUT_COUNT 5
  14
  15 /* IP datagram fragment descriptor. Used to store IP datagram fragments */
  16 typedef struct IP_FRAGMENT {
  17     LIST_ENTRY ListEntry; /* Entry on list */
  18     PVOID Data;           /* Pointer to fragment data */
  19     UINT Offset;          /* Offset into datagram where this fragment is */
  20     UINT Size;            /* Size of this fragment */
  21 } IP_FRAGMENT, *PIP_FRAGMENT;
  22
  23 /* IP datagram hole descriptor. Used to reassemble IP datagrams */
  24 typedef struct IPDATAGRAM_HOLE {
  25     LIST_ENTRY ListEntry; /* Entry on list */
  26     UINT First;           /* Offset of first octet of the hole */
  27     UINT Last;            /* Offset of last octet of the hole */
  28 } IPDATAGRAM_HOLE, *PIPDATAGRAM_HOLE;
  29
  30 /* IP datagram reassembly information */
  31 typedef struct IPDATAGRAM_REASSEMBLY {
  32     LIST_ENTRY ListEntry;        /* Entry on list */
  33     KSPIN_LOCK Lock;             /* Protecting spin lock */
  34     UINT DataSize;               /* Size of datagram data area */
  35     IP_ADDRESS SrcAddr;          /* Source address */
  36     IP_ADDRESS DstAddr;          /* Destination address */
  37     UCHAR Protocol;              /* Internet Protocol number */
  38     USHORT Id;                   /* Identification number */
  39     IP_HEADER IPv4Header;        /* Pointer to IP header */
  40     UINT HeaderSize;             /* Length of IP header */
  41     LIST_ENTRY FragmentListHead; /* IP fragment list */
  42     LIST_ENTRY HoleListHead;     /* IP datagram hole list */
  43     UINT TimeoutCount;           /* Timeout counter */
  44 } IPDATAGRAM_REASSEMBLY, *PIPDATAGRAM_REASSEMBLY;
  45
  46
  47 extern LIST_ENTRY ReassemblyListHead;
  48 extern KSPIN_LOCK ReassemblyListLock;
  49 extern NPAGED_LOOKASIDE_LIST IPDRList;
  50 extern NPAGED_LOOKASIDE_LIST IPFragmentList;
  51 extern NPAGED_LOOKASIDE_LIST IPHoleList;
  52
  53
  54 VOID IPFreeReassemblyList(
  55     VOID);
  56
  57 VOID IPDatagramReassemblyTimeout(
  58     VOID);
  59
  60 VOID IPReceive(
  61     PIP_INTERFACE IF,
  62     PIP_PACKET IPPacket);
  63
  64 /* EOF */