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382 lines
7.5 KiB
382 lines
7.5 KiB
/*++
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Copyright (c) 1997 Microsoft Corporation
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Module Name:
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net\routing\ip\ipinip\tdix.h
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Abstract:
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Interface to TDI
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Revision History:
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Copied from Steve Cobb's ntos\ndis\l2tp code
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Most of the comments are the original ones from SteveC.
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There are style and some name changes
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--*/
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#ifndef __IPINIP_TDIX_H__
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#define __IPINIP_TDIX_H__
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//
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// Read datagram information context used to pass context information from the
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// ReadDatagram event handler to the RECEIVE_DATAGRAM completion routine.
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//
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typedef struct _SEND_CONTEXT
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{
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//
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// The tunnel over which the send is being done
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//
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PTUNNEL pTunnel;
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//
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// Pointer to the packet being sent
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// This packet is not sent, rather the first buffer is sent
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//
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PNDIS_PACKET pnpPacket;
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//
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// The size of the packet
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//
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ULONG ulOutOctets;
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#if PROFILE
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LONGLONG llSendTime;
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LONGLONG llCallTime;
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LONGLONG llTransmitTime;
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LONGLONG llCall2Time;
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#endif
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}SEND_CONTEXT, *PSEND_CONTEXT;
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typedef struct _TRANSFER_CONTEXT
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{
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//
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// Tunnel associated with the receive
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//
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PTUNNEL pTunnel;
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//
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// The packet to transfer data into
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//
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PNDIS_PACKET pnpTransferPacket;
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//
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// The context returned by IP
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//
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PVOID pvContext;
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//
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// The offset indicated by us to IP (outer IP Header)
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//
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UINT uiProtoOffset;
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//
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// The offset into the received packet at which to begin copying data
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//
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UINT uiTransferOffset;
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//
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// The the number of bytes to transfer
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//
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UINT uiTransferLength;
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//
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// Flag to see if IP requested a transfer
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//
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BOOLEAN bRequestTransfer;
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#if PROFILE
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LONGLONG llRcvTime;
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#endif
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}TRANSFER_CONTEXT, *PTRANSFER_CONTEXT;
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typedef struct _QUEUE_NODE
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{
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LIST_ENTRY leQueueItemLink;
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//
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// We make the work queue item part of the struct so that
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// we dont need to allocate (and free) two structs
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//
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WORK_QUEUE_ITEM WorkItem;
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//
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// The ppPacketArray points to an vector of uiNumPackets NDIS_PACKETs
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// The common case however is uiNumPackets = 1. To optimiize for this
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// we make ppPacketArray point to pnpPacket and make pnpPacket point to
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// the packet to transmit. This way we dont need to allocate a
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// uiNumPackets * sizeof(PNDIS_PACKET) sized block of memory.
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//
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NDIS_PACKET **ppPacketArray;
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PNDIS_PACKET pnpPacket;
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//
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// The number of packets
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//
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UINT uiNumPackets;
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//
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// The next hop address. Not really important, maybe move this to
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// a debug only build?
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//
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DWORD dwDestAddr;
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#if PROFILE
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LONGLONG llSendTime;
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LONGLONG llCallTime;
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#endif
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}QUEUE_NODE, *PQUEUE_NODE;
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typedef struct _OPEN_CONTEXT
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{
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PKEVENT pkeEvent;
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NTSTATUS nStatus;
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}OPEN_CONTEXT, *POPEN_CONTEXT;
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//
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// The depths of the lookaside lists used to allocate send and receive
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// contexts
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//
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#define SEND_CONTEXT_LOOKASIDE_DEPTH 20
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#define TRANSFER_CONTEXT_LOOKASIDE_DEPTH 20
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#define QUEUE_NODE_LOOKASIDE_DEPTH 20
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//
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// The lookaside lists themselves
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//
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extern NPAGED_LOOKASIDE_LIST g_llSendCtxtBlocks;
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extern NPAGED_LOOKASIDE_LIST g_llTransferCtxtBlocks;
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extern NPAGED_LOOKASIDE_LIST g_llQueueNodeBlocks;
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//++
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// PSEND_CONTEXT
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// AllocateSendContext(
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// VOID
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// )
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//
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// Allocate a send context from g_llSendCtxtBlocks
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//
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//--
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#define AllocateSendContext() \
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ExAllocateFromNPagedLookasideList(&g_llSendCtxtBlocks)
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//++
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// VOID
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// FreeSendContext(
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// PSEND_CONTEXT pSndCtxt
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// )
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//
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// Free a send context to g_llSendCtxtBlocks
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//
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//--
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#define FreeSendContext(p) \
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ExFreeToNPagedLookasideList(&g_llSendCtxtBlocks, (p))
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//++
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// PTRANSFER_CONTEXT
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// AllocateTransferContext(
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// VOID
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// )
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//
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// Allocate a transfer context from g_llTransferCtxtBlocks
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//
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//--
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#define AllocateTransferContext() \
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ExAllocateFromNPagedLookasideList(&g_llTransferCtxtBlocks)
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//++
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// VOID
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// FreeTransferContext(
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// PTRANSFER_CONTEXT pTransferCtxt
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// )
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//
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// Free a transfer context to g_llTransferCtxtBlocks
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//
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//--
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#define FreeTransferContext(p) \
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ExFreeToNPagedLookasideList(&g_llTransferCtxtBlocks, (p))
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//++
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// PQUEUE_NODE
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// AllocateQueueNode(
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// VOID
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// )
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//
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// Allocate a queue node from g_llQueueNodeBlocks
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//
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//--
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#define AllocateQueueNode() \
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ExAllocateFromNPagedLookasideList(&g_llQueueNodeBlocks)
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//++
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// VOID
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// FreeQueueNode(
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// PQUEUE_NODE pQueueNode
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// )
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//
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// Free a work context to g_llQueueNodeBlocks
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//
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//--
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#define FreeQueueNode(p) \
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ExFreeToNPagedLookasideList(&g_llQueueNodeBlocks, (p))
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//
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// Interface prototypes
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//
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VOID
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TdixInitialize(
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PVOID pvContext
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);
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NTSTATUS
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TdixOpenRawIp(
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IN DWORD dwProtoId,
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OUT HANDLE *phAddrHandle,
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OUT FILE_OBJECT **ppAddrFileObj
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);
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VOID
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TdixDeinitialize(
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IN PDEVICE_OBJECT pDeviceObject,
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IN PVOID pvContext
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);
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NTSTATUS
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TdixInstallEventHandler(
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IN PFILE_OBJECT pAddrFileObj,
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IN INT iEventType,
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IN PVOID pfnEventHandler,
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IN PVOID pvEventContext
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);
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VOID
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TdixAddressArrival(
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PTA_ADDRESS pAddr,
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PUNICODE_STRING pusDeviceName,
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PTDI_PNP_CONTEXT pContext
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);
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VOID
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TdixAddressDeletion(
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PTA_ADDRESS pAddr,
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PUNICODE_STRING pusDeviceName,
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PTDI_PNP_CONTEXT pContext
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);
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NTSTATUS
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TdixReceiveIpIpDatagram(
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IN PVOID pvTdiEventContext,
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IN LONG lSourceAddressLen,
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IN PVOID pvSourceAddress,
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IN LONG plOptionsLeng,
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IN PVOID pvOptions,
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IN ULONG ulReceiveDatagramFlags,
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IN ULONG ulBytesIndicated,
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IN ULONG ulBytesAvailable,
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OUT PULONG pulBytesTaken,
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IN PVOID pvTsdu,
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OUT IRP **ppIoRequestPacket
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);
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NTSTATUS
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TdixReceiveIpIpDatagramComplete(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp,
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IN PVOID Context
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);
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#if PROFILE
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NTSTATUS
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TdixSendDatagram(
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IN PTUNNEL pTunnel,
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IN PNDIS_PACKET pnpPacket,
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IN PNDIS_BUFFER pnbFirstBuffer,
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IN ULONG ulBufferLength,
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IN LONGLONG llSendTime,
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IN LONGLONG llCallTime,
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IN LONGLONG llTransmitTime
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);
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#else
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NTSTATUS
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TdixSendDatagram(
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IN PTUNNEL pTunnel,
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IN PNDIS_PACKET pnpPacket,
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IN PNDIS_BUFFER pnbFirstBuffer,
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IN ULONG ulBufferLength
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);
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#endif
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NTSTATUS
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TdixSendDatagramComplete(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp,
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IN PVOID Context
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);
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NTSTATUS
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TdixReceiveIcmpDatagram(
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IN PVOID pvTdiEventContext,
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IN LONG lSourceAddressLen,
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IN PVOID pvSourceAddress,
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IN LONG plOptionsLeng,
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IN PVOID pvOptions,
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IN ULONG ulReceiveDatagramFlags,
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IN ULONG ulBytesIndicated,
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IN ULONG ulBytesAvailable,
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OUT PULONG pulBytesTaken,
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IN PVOID pvTsdu,
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OUT IRP **ppIoRequestPacket
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);
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#endif // __IPINIP_TDIX_H__
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