#include "ndissys.h"

Include dependency graph for control.c:

Functions
VOID EXPORT	NdisInitializeReadWriteLock (IN PNDIS_RW_LOCK Lock)

VOID EXPORT	NdisAcquireReadWriteLock (IN PNDIS_RW_LOCK Lock, IN BOOLEAN fWrite, IN PLOCK_STATE LockState)

VOID EXPORT	NdisReleaseReadWriteLock (IN PNDIS_RW_LOCK Lock, IN PLOCK_STATE LockState)

VOID EXPORT	NdisAcquireSpinLock (IN PNDIS_SPIN_LOCK SpinLock)

VOID EXPORT	NdisAllocateSpinLock (IN PNDIS_SPIN_LOCK SpinLock)

VOID EXPORT	NdisDprAcquireSpinLock (IN PNDIS_SPIN_LOCK SpinLock)

VOID EXPORT	NdisDprReleaseSpinLock (IN PNDIS_SPIN_LOCK SpinLock)

VOID EXPORT	NdisFreeSpinLock (IN PNDIS_SPIN_LOCK SpinLock)

VOID EXPORT	NdisInitializeEvent (IN PNDIS_EVENT Event)

VOID EXPORT	NdisReleaseSpinLock (IN PNDIS_SPIN_LOCK SpinLock)

VOID EXPORT	NdisResetEvent (IN PNDIS_EVENT Event)

VOID EXPORT	NdisSetEvent (IN PNDIS_EVENT Event)

BOOLEAN EXPORT	NdisWaitEvent (IN PNDIS_EVENT Event, IN UINT MsToWait)

Function Documentation

◆ NdisAcquireReadWriteLock()

VOID EXPORT NdisAcquireReadWriteLock	(	IN PNDIS_RW_LOCK	Lock,
		IN BOOLEAN	fWrite,
		IN PLOCK_STATE	LockState
	)

Definition at line 40 of file control.c.

 {
   ULONG RefCount;
   UCHAR ProcessorNumber;
   volatile UCHAR BusyLoop;
 
   ASSERT_IRQL(DISPATCH_LEVEL);
 
   if (fWrite) {
     if (Lock->Context == PsGetCurrentThread()) {
       LockState->LockState = 2;
     } else {
       KeAcquireSpinLock(&Lock->SpinLock, &LockState->OldIrql);
       /* Check if any other processor helds a shared lock. */
       for (ProcessorNumber = KeNumberProcessors; ProcessorNumber--; ) {
         if (ProcessorNumber != KeGetCurrentProcessorNumber()) {
           /* Wait till the shared lock is released. */
           while (Lock->RefCount[ProcessorNumber].RefCount != 0) {
             for (BusyLoop = 32; BusyLoop--; )
               ;
           }
         }
       }
       Lock->Context = PsGetCurrentThread();
       LockState->LockState = 4;
     }
   } else {
     KeRaiseIrql(DISPATCH_LEVEL, &LockState->OldIrql);
     RefCount = InterlockedIncrement((PLONG)&Lock->RefCount[KeGetCurrentProcessorNumber()].RefCount);
     /* Racing with a exclusive write lock case. */
     if (Lock->SpinLock != 0) {
       if (RefCount == 1) {
         if (Lock->Context != PsGetCurrentThread()) {
           /* Wait for the exclusive lock to be released. */
           Lock->RefCount[KeGetCurrentProcessorNumber()].RefCount--;
           KeAcquireSpinLockAtDpcLevel(&Lock->SpinLock);
           Lock->RefCount[KeGetCurrentProcessorNumber()].RefCount++;
           KeReleaseSpinLockFromDpcLevel(&Lock->SpinLock);
         }
       }
     }
     Lock->Context = PsGetCurrentThread();
     LockState->LockState = 3;
   }
 }

◆ NdisAcquireSpinLock()

VOID EXPORT NdisAcquireSpinLock ( IN PNDIS_SPIN_LOCK SpinLock )

Definition at line 135 of file control.c.

 {
   KeAcquireSpinLock(&SpinLock->SpinLock, &SpinLock->OldIrql);
 }

Referenced by CheckRunningDpc(), FreeDescriptorsFromList(), MiniportQueryInformation(), MiniportSend(), MiniportSetInformation(), ParaNdis5_CancelSendPackets(), ParaNdis5_ReturnPacket(), ParaNdis5_SendPackets(), ParaNdis5_StopReceive(), ParaNdis5_StopSend(), ParaNdis_DebugRegisterMiniport(), ParaNdis_DPCWorkBody(), ParaNdis_PowerOff(), ParaNdis_PowerOn(), ParaNdis_ProcessRxPath(), ParaNdis_ProcessTx(), SendControlMessage(), and VirtIONetRelease().

◆ NdisAllocateSpinLock()

VOID EXPORT NdisAllocateSpinLock ( IN PNDIS_SPIN_LOCK SpinLock )

Definition at line 152 of file control.c.

 {
   KeInitializeSpinLock(&SpinLock->SpinLock);
 }

Referenced by MiniportInitialize(), ParaNdis_DebugInitialize(), and ParaNdis_FinishInitialization().

◆ NdisDprAcquireSpinLock()

VOID EXPORT NdisDprAcquireSpinLock ( IN PNDIS_SPIN_LOCK SpinLock )

Definition at line 169 of file control.c.

 {
   KeAcquireSpinLockAtDpcLevel(&SpinLock->SpinLock);
   SpinLock->OldIrql = DISPATCH_LEVEL;
 }

Referenced by MiniportHandleInterrupt(), and MiniportSend().

◆ NdisDprReleaseSpinLock()

VOID EXPORT NdisDprReleaseSpinLock ( IN PNDIS_SPIN_LOCK SpinLock )

Definition at line 187 of file control.c.

 {
   KeReleaseSpinLockFromDpcLevel(&SpinLock->SpinLock);
 }

Referenced by MiniportHandleInterrupt(), and MiniportSend().

◆ NdisFreeSpinLock()

VOID EXPORT NdisFreeSpinLock ( IN PNDIS_SPIN_LOCK SpinLock )

Definition at line 204 of file control.c.

 {
   /* Nothing to do here! */
 }

Referenced by MiniportHalt(), and ParaNdis_CleanupContext().

◆ NdisInitializeEvent()

VOID EXPORT NdisInitializeEvent ( IN PNDIS_EVENT Event )

Definition at line 221 of file control.c.

 {
   KeInitializeEvent(&Event->Event, NotificationEvent, FALSE);
 }

Referenced by ParaNdis_FinishSpecificInitialization(), and ParaNdis_InitializeContext().

◆ NdisInitializeReadWriteLock()

VOID EXPORT NdisInitializeReadWriteLock ( IN PNDIS_RW_LOCK Lock )

Definition at line 20 of file control.c.

 {
   RtlZeroMemory(Lock, sizeof(NDIS_RW_LOCK));
 
   KeInitializeSpinLock(&Lock->SpinLock);
 }

◆ NdisReleaseReadWriteLock()

VOID EXPORT NdisReleaseReadWriteLock	(	IN PNDIS_RW_LOCK	Lock,
		IN PLOCK_STATE	LockState
	)

Definition at line 100 of file control.c.

 {
   switch (LockState->LockState) {
     case 2: /* Exclusive write lock, recursive */
       return;
 
     case 3: /* Shared read lock */
       Lock->RefCount[KeGetCurrentProcessorNumber()].RefCount--;
       LockState->LockState = -1;
       if (LockState->OldIrql < DISPATCH_LEVEL)
         KeLowerIrql(LockState->OldIrql);
       return;
 
     case 4: /* Exclusive write lock */
       Lock->Context = NULL;
       LockState->LockState = -1;
       KeReleaseSpinLock(&Lock->SpinLock, LockState->OldIrql);
       return;
   }
 }

◆ NdisReleaseSpinLock()

VOID EXPORT NdisReleaseSpinLock ( IN PNDIS_SPIN_LOCK SpinLock )

Definition at line 239 of file control.c.

 {
   KeReleaseSpinLock(&SpinLock->SpinLock, SpinLock->OldIrql);
 }

Referenced by CheckRunningDpc(), FreeDescriptorsFromList(), MiniportQueryInformation(), MiniportSend(), MiniportSetInformation(), ParaNdis5_CancelSendPackets(), ParaNdis5_ReturnPacket(), ParaNdis5_SendPackets(), ParaNdis5_StopReceive(), ParaNdis5_StopSend(), ParaNdis_DebugRegisterMiniport(), ParaNdis_DPCWorkBody(), ParaNdis_PowerOff(), ParaNdis_PowerOn(), ParaNdis_ProcessRxPath(), ParaNdis_ProcessTx(), SendControlMessage(), and VirtIONetRelease().

◆ NdisResetEvent()

VOID EXPORT NdisResetEvent ( IN PNDIS_EVENT Event )

Definition at line 256 of file control.c.

 {
   KeClearEvent(&Event->Event);
 }

Referenced by ParaNdis5_Halt(), and ParaNdis_Suspend().

◆ NdisSetEvent()

VOID EXPORT NdisSetEvent ( IN PNDIS_EVENT Event )

Definition at line 273 of file control.c.

 {
   KeSetEvent(&Event->Event, IO_NO_INCREMENT, FALSE);
 }

Referenced by OnReceiveStopped(), OnReceiveStoppedOnReset(), OnSendStopped(), OnSendStoppedOnReset(), ParaNdis5_Halt(), and ParaNdis_Suspend().

◆ NdisWaitEvent()

BOOLEAN EXPORT NdisWaitEvent	(	IN PNDIS_EVENT	Event,
		IN UINT	MsToWait
	)

Definition at line 290 of file control.c.

 {
   LARGE_INTEGER Timeout;
   NTSTATUS Status;
 
   Timeout.QuadPart = Int32x32To64(MsToWait, -10000);
 
   Status = KeWaitForSingleObject(&Event->Event, Executive, KernelMode, TRUE, &Timeout);
 
   return (Status == STATUS_SUCCESS);
 }

Referenced by ParaNdis_Suspend(), and WaitHaltEvent().

Functions