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 3
  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     PNDIS_PACKET Packet;  /* NDIS packet containing fragment data */
  19     BOOLEAN ReturnPacket; /* States whether to call NdisReturnPackets */
  20     UINT PacketOffset;    /* Offset into NDIS packet where data is */
  21     UINT Offset;          /* Offset into datagram where this fragment is */
  22     UINT Size;            /* Size of this fragment */
  23 } IP_FRAGMENT, *PIP_FRAGMENT;
  24
  25 /* IP datagram hole descriptor. Used to reassemble IP datagrams */
  26 typedef struct IPDATAGRAM_HOLE {
  27     LIST_ENTRY ListEntry; /* Entry on list */
  28     UINT First;           /* Offset of first octet of the hole */
  29     UINT Last;            /* Offset of last octet of the hole */
  30 } IPDATAGRAM_HOLE, *PIPDATAGRAM_HOLE;
  31
  32 /* IP datagram reassembly information */
  33 typedef struct IPDATAGRAM_REASSEMBLY {
  34     LIST_ENTRY ListEntry;        /* Entry on list */
  35     KSPIN_LOCK Lock;             /* Protecting spin lock */
  36     UINT DataSize;               /* Size of datagram data area */
  37     IP_ADDRESS SrcAddr;          /* Source address */
  38     IP_ADDRESS DstAddr;          /* Destination address */
  39     UCHAR Protocol;              /* Internet Protocol number */
  40     USHORT Id;                   /* Identification number */
  41     PIP_HEADER IPv4Header;       /* Pointer to IP header */
  42     UINT HeaderSize;             /* Length of IP header */
  43     LIST_ENTRY FragmentListHead; /* IP fragment list */
  44     LIST_ENTRY HoleListHead;     /* IP datagram hole list */
  45     UINT TimeoutCount;           /* Timeout counter */
  46 } IPDATAGRAM_REASSEMBLY, *PIPDATAGRAM_REASSEMBLY;
  47
  48
  49 extern LIST_ENTRY ReassemblyListHead;
  50 extern KSPIN_LOCK ReassemblyListLock;
  51 extern NPAGED_LOOKASIDE_LIST IPDRList;
  52 extern NPAGED_LOOKASIDE_LIST IPFragmentList;
  53 extern NPAGED_LOOKASIDE_LIST IPHoleList;
  54
  55
  56 VOID IPFreeReassemblyList(
  57     VOID);
  58
  59 VOID IPDatagramReassemblyTimeout(
  60     VOID);
  61
  62 VOID IPReceive(
  63     PIP_INTERFACE IF,
  64     PIP_PACKET IPPacket);
  65
  66 /* EOF */