397 lines
10 KiB
C
397 lines
10 KiB
C
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/*****************************************************************************
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*
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* Copyright (c) 1996-1999 Microsoft Corporation
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*
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* @doc
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* @module send.c | IrSIR NDIS Miniport Driver
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* @comm
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*
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*-----------------------------------------------------------------------------
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*
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* Author: Scott Holden (sholden)
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*
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* Date: 10/4/1996 (created)
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*
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* Contents:
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*
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*****************************************************************************/
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#include "irsir.h"
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//
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// Declarations.
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//
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NDIS_STATUS SendPacket(
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IN PIR_DEVICE pThisDev,
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IN PNDIS_PACKET Packet,
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IN UINT Flags
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);
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NTSTATUS SerialIoCompleteWrite(
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IN PDEVICE_OBJECT pSerialDevObj,
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IN PIRP pIrp,
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IN PVOID Context
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);
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VOID
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SendPacketToSerial(
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PVOID Context,
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PNDIS_PACKET Packet
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)
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{
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PIR_DEVICE pThisDev=(PIR_DEVICE)Context;
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NDIS_STATUS status;
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PPACKET_RESERVED_BLOCK Reserved=(PPACKET_RESERVED_BLOCK)&Packet->MiniportReservedEx[0];
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Reserved->Context=pThisDev;
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status = SendPacket(
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pThisDev,
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Packet,
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0
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);
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if (status != NDIS_STATUS_PENDING) {
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//
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// failed for some reason
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//
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NdisMSendComplete(
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pThisDev->hNdisAdapter,
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Packet,
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(NDIS_STATUS)status
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);
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//
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// This packet is finished, start the next on in the queue
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//
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StartNextPacket(&pThisDev->SendPacketQueue);
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}
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//
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// the write irp completion routine will finish things up
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//
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return;
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}
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/*****************************************************************************
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*
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* Function: IrsirSend
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*
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* Synopsis: Send a packet to the serial driver or queue the packet to
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* be sent at a later time if a send is pending.
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*
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* Arguments: MiniportAdapterContext - pointer to current ir device object
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* pPacketToSend - pointer to packet to send
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* Flags - any flags set by protocol
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*
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* Returns: NDIS_STATUS_PENDING - This is generally what we should
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* return. We will call NdisMSendComplete
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* when the serial driver completes the
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* send.
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*
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* NDIS_STATUS_SUCCESS - We should never return this since
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* results will always be pending from
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* the serial driver.
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*
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* Algorithm:
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*
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* History: dd-mm-yyyy Author Comment
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* 10/7/1996 sholden author
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*
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* Notes:
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*
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*
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*****************************************************************************/
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NDIS_STATUS
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IrsirSend(
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IN NDIS_HANDLE MiniportAdapterContext,
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IN PNDIS_PACKET pPacketToSend,
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IN UINT Flags
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)
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{
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PIR_DEVICE pThisDev;
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BOOLEAN fCompletionRoutine;
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NDIS_STATUS status;
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DEBUGMSG(DBG_FUNC, ("+IrsirSend\n"));
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pThisDev = CONTEXT_TO_DEV(MiniportAdapterContext);
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if (pThisDev->pSerialDevObj==NULL) {
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return NDIS_STATUS_SUCCESS;
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}
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QueuePacket(
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&pThisDev->SendPacketQueue,
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pPacketToSend
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);
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DEBUGMSG(DBG_FUNC, ("-IrsirSend\n"));
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return NDIS_STATUS_PENDING;
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}
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/*****************************************************************************
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*
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* Function: SendPacket
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*
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* Synopsis:
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*
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* Arguments: pThisDev - a pointer to the current ir device object
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* pPacketToSend -
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* Flags -
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* fCompletionRoutine - return TRUE if the completion routine will
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* be called
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* - else return FALSE
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*
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* Returns: NDIS_STATUS_PENDING - if irp is successfully sent to the serial
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* driver
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* NDIS_STATUS_INVALID_PACKET - if NdisToIrPacket fails
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* STATUS_Xxx - if IoCallDriver fails
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*
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* Algorithm:
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*
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* History: dd-mm-yyyy Author Comment
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* 10/7/1996 sholden author
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*
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* Notes:
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*
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* Since we know that we will only have one pending IRP_MJ_WRITE request at
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* a time, we will build an irp once in IrsirInitialize and keep it in the
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* ir device object, so we don't have to allocate it all the time and
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* allocate a new buffer all the time.
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*
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*
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*****************************************************************************/
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NDIS_STATUS
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SendPacket(
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IN PIR_DEVICE pThisDev,
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IN PNDIS_PACKET pPacketToSend,
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IN UINT Flags
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)
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{
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PIRP pSendIrp;
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UINT BytesToWrite;
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NDIS_STATUS status;
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BOOLEAN fConvertedPacket;
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DEBUGMSG(DBG_FUNC, ("+SendPacket\n"));
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//
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// Initialize the mem of our buffer and io status block.
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//
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#if DBG
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NdisZeroMemory(
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pThisDev->pSendIrpBuffer,
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MAX_IRDA_DATA_SIZE
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);
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#endif
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//
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// Assume that the irp is all set with the proper parameters, all we
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// need to do is convert the packet to an ir frame and copy into our buffer
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// and send the irp.
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//
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fConvertedPacket = NdisToIrPacket(
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pThisDev,
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pPacketToSend,
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(PUCHAR)pThisDev->pSendIrpBuffer,
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MAX_IRDA_DATA_SIZE,
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&BytesToWrite
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);
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if (fConvertedPacket == FALSE)
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{
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DEBUGMSG(DBG_ERR, (" NdisToIrPacket failed. Couldn't convert packet!\n"));
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status = NDIS_STATUS_INVALID_PACKET;
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goto done;
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}
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{
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LARGE_INTEGER Time;
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KeQuerySystemTime(&Time);
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LOG_ENTRY('XT', pThisDev, Time.LowPart/10000, BytesToWrite);
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}
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pSendIrp = SerialBuildReadWriteIrp(
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pThisDev->pSerialDevObj,
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IRP_MJ_WRITE,
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pThisDev->pSendIrpBuffer,
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BytesToWrite,
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NULL
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);
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if (pSendIrp == NULL)
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{
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DEBUGMSG(DBG_ERR, (" SerialBuildReadWriteIrp failed.\n"));
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status = NDIS_STATUS_RESOURCES;
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goto done;
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}
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//
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// Set up the completion routine for the write irp.
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//
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IoSetCompletionRoutine(
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pSendIrp, // irp to use
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SerialIoCompleteWrite, // routine to call when irp is done
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pPacketToSend,
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TRUE, // call on success
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TRUE, // call on error
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TRUE // call on cancel
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);
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//
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// Call IoCallDriver to send the irp to the serial port.
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//
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DBGTIME("Send ");
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//
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// The completion routine will be called no matter what the status
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// of IoCallDriver is.
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//
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status=NDIS_STATUS_PENDING;
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IoCallDriver(
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pThisDev->pSerialDevObj,
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pSendIrp
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);
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done:
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DEBUGMSG(DBG_FUNC, ("-SendPacket\n"));
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return status;
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}
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/*****************************************************************************
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*
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* Function: SerialIoCompleteWrite
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*
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* Synopsis:
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*
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* Arguments: pSerialDevObj - pointer to the serial device object which
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* completed the irp
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* pIrp - the irp which was completed by the serial
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* device object
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* Context - the context given to IoSetCompletionRoutine
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* before calling IoCallDriver on the irp
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* The Context is a pointer to the ir device object.
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*
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* Returns: STATUS_MORE_PROCESSING_REQUIRED - allows the completion routine
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* (IofCompleteRequest) to stop working on the irp.
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*
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* Algorithm:
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* 1a) Indicate to the protocol the status of the write.
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* 1b) Return ownership of the packet to the protocol.
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*
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* 2) If any more packets are queue for sending, send another packet
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* to the serial driver.
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* If the attempt to send the packet to the serial driver fails,
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* return ownership of the packet to the protocol and
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* try another packet (until one succeeds).
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*
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* History: dd-mm-yyyy Author Comment
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* 10/8/1996 sholden author
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*
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* Notes:
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*
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*
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*****************************************************************************/
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NTSTATUS
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SerialIoCompleteWrite(
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IN PDEVICE_OBJECT pSerialDevObj,
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IN PIRP pIrp,
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IN PVOID Context
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)
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{
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PIR_DEVICE pThisDev;
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PNDIS_PACKET pPacketToSend;
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NTSTATUS status;
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PPACKET_RESERVED_BLOCK Reserved;
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DEBUGMSG(DBG_FUNC, ("+SerialIoCompleteWrite\n"));
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//
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// The context given to IoSetCompletionRoutine is simply the the ir
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// device object pointer.
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//
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pPacketToSend=(PNDIS_PACKET)Context;
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Reserved=(PPACKET_RESERVED_BLOCK)&pPacketToSend->MiniportReservedEx[0];
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pThisDev = (PIR_DEVICE)Reserved->Context;
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status = pIrp->IoStatus.Status;
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//
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// Free the irp. We keep our buffer and user io status block.
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//
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IoFreeIrp(pIrp);
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pIrp=NULL;
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{
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LARGE_INTEGER Time;
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KeQuerySystemTime(&Time);
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LOG_ENTRY('CT', pThisDev, Time.LowPart/10000, status);
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}
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//
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// Keep statistics.
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//
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if (status == STATUS_SUCCESS) {
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pThisDev->packetsSent++;
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} else {
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pThisDev->packetsSentDropped++;
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}
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//
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// Indicate to the protocol the status of the sent packet and return
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// ownership of the packet.
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//
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NdisMSendComplete(
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pThisDev->hNdisAdapter,
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pPacketToSend,
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(NDIS_STATUS)status
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);
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//////////////////////////////////////////////////////////////
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//
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// We have completed a packet. Start another if there is one
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// on the send queue.
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//
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//////////////////////////////////////////////////////////////
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StartNextPacket(&pThisDev->SendPacketQueue);
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DEBUGMSG(DBG_FUNC, ("-SerialIoCompleteWrite\n"));
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return STATUS_MORE_PROCESSING_REQUIRED;
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}
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