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[RDBSS][RXCE] Implement IRP cancellation

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CORE-15441
This commit is contained in:
Pierre Schweitzer 2019-01-02 15:01:38 +01:00
parent 1e141573e4
commit a9124b412d
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GPG key ID: 7545556C3D585B0B
3 changed files with 252 additions and 2 deletions
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87
sdk/lib/drivers/rxce/rxce.c
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@ -143,6 +143,7 @@ LIST_ENTRY RxRecurrentWorkItemsList;
KDPC RxTimerDpc;
KTIMER RxTimer;
ULONG RxTimerTickCount;
FAST_MUTEX RxContextPerFileSerializationMutex;
#if DBG
BOOLEAN DumpDispatchRoutine = TRUE;
#else
@ -715,6 +716,66 @@ RxBootstrapWorkerThreadDispatcher(
RxpWorkerThreadDispatcher(RxWorkQueue, NULL);
}
/*
* @implemented
*/
VOID
RxCancelBlockingOperation(
IN OUT PRX_CONTEXT RxContext)
{
PFOBX Fobx;
BOOLEAN PostRequest;
C_ASSERT(FIELD_OFFSET(RX_CONTEXT, IoStatusBlock.Status) == 100);
PAGED_CODE();
Fobx = (PFOBX)RxContext->pFobx;
PostRequest = FALSE;
/* Acquire the pipe mutex */
ExAcquireFastMutex(&RxContextPerFileSerializationMutex);
/* If that's a blocking pipe operation which is not the CCB one, then handle it */
if (BooleanFlagOn(RxContext->FlagsForLowIo, RXCONTEXT_FLAG4LOWIO_PIPE_SYNC_OPERATION) &&
RxContext->RxContextSerializationQLinks.Flink != NULL &&
RxContext != CONTAINING_RECORD(&Fobx->Specific.NamedPipe.ReadSerializationQueue, RX_CONTEXT, RxContextSerializationQLinks) &&
RxContext != CONTAINING_RECORD(&Fobx->Specific.NamedPipe.WriteSerializationQueue, RX_CONTEXT, RxContextSerializationQLinks))
{
/* Clear it! */
ClearFlag(RxContext->FlagsForLowIo, RXCONTEXT_FLAG4LOWIO_PIPE_SYNC_OPERATION);
/* Drop it off the list */
RemoveEntryList(&RxContext->RxContextSerializationQLinks);
RxContext->RxContextSerializationQLinks.Flink = NULL;
RxContext->RxContextSerializationQLinks.Blink = NULL;
/* Set we've been cancelled */
RxContext->IoStatusBlock.Status = STATUS_CANCELLED;
/*
* If it's async, we'll post completion, otherwise, we signal to waiters
* it's being cancelled
*/
if (BooleanFlagOn(RxContext->Flags, RX_CONTEXT_FLAG_ASYNC_OPERATION))
{
PostRequest = TRUE;
}
else
{
RxSignalSynchronousWaiter(RxContext);
}
}
/* Done */
ExReleaseFastMutex(&RxContextPerFileSerializationMutex);
/* Post if async */
if (PostRequest)
{
RxFsdPostRequest(RxContext);
}
}
/*
* @implemented
*/
@ -7562,6 +7623,32 @@ RxRemoveNameNetFcb(
#endif
}
/*
* @implemented
*/
VOID
RxRemoveOperationFromBlockingQueue(
IN OUT PRX_CONTEXT RxContext)
{
/* Acquire the pipe mutex */
ExAcquireFastMutex(&RxContextPerFileSerializationMutex);
/* Is that a blocking serial operation? */
if (BooleanFlagOn(RxContext->FlagsForLowIo, RXCONTEXT_FLAG4LOWIO_PIPE_SYNC_OPERATION))
{
/* Clear it! */
ClearFlag(RxContext->FlagsForLowIo, RXCONTEXT_FLAG4LOWIO_PIPE_SYNC_OPERATION);
/* Drop it off the list */
RemoveEntryList(&RxContext->RxContextSerializationQLinks);
RxContext->RxContextSerializationQLinks.Flink = NULL;
RxContext->RxContextSerializationQLinks.Blink = NULL;
}
/* Done */
ExReleaseFastMutex(&RxContextPerFileSerializationMutex);
}
/*
* @implemented
*/