From efaf3a892adc643b7cf50beeccdf4d0ea1e95394 Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Sat, 28 Mar 2009 17:49:27 +0000
Subject: [PATCH]  - Implement NdisMAllocateSharedMemoryAsync  - Zero the
 entire packet in NdisAllocatePacket

svn path=/trunk/; revision=40270
---
 .../drivers/network/ndis/include/miniport.h   | 12 ++--
 reactos/drivers/network/ndis/ndis/50stubs.c   | 19 +-----
 reactos/drivers/network/ndis/ndis/buffer.c    |  2 +-
 reactos/drivers/network/ndis/ndis/memory.c    | 68 +++++++++++++++++++
 4 files changed, 78 insertions(+), 23 deletions(-)

diff --git a/reactos/drivers/network/ndis/include/miniport.h b/reactos/drivers/network/ndis/include/miniport.h
index 074397bdc6e..c41751b52b7 100644
--- a/reactos/drivers/network/ndis/include/miniport.h
+++ b/reactos/drivers/network/ndis/include/miniport.h
@@ -58,11 +58,13 @@ typedef struct _MINIPORT_BUGCHECK_CONTEXT {
 
 /* a miniport's shared memory */
 typedef struct _MINIPORT_SHARED_MEMORY {
-    PDMA_ADAPTER      AdapterObject;
-    ULONG             Length;
-    PHYSICAL_ADDRESS  PhysicalAddress;
-    PVOID             VirtualAddress;
-    BOOLEAN           Cached;
+    PDMA_ADAPTER          AdapterObject;
+    ULONG                 Length;
+    PHYSICAL_ADDRESS      PhysicalAddress;
+    PVOID                 VirtualAddress;
+    BOOLEAN               Cached;
+    PNDIS_MINIPORT_BLOCK  Adapter;
+    PVOID                 Context;
 } MINIPORT_SHARED_MEMORY, *PMINIPORT_SHARED_MEMORY;
 
 /* A structure of WrapperConfigurationContext (not compatible with the
diff --git a/reactos/drivers/network/ndis/ndis/50stubs.c b/reactos/drivers/network/ndis/ndis/50stubs.c
index 8e283579dc3..e46f577c36e 100644
--- a/reactos/drivers/network/ndis/ndis/50stubs.c
+++ b/reactos/drivers/network/ndis/ndis/50stubs.c
@@ -661,23 +661,6 @@ NdisMDeregisterIoPortRange(
    UNIMPLEMENTED
 }
 
-
-/*
- * @unimplemented
- */
-NDIS_STATUS
-EXPORT
-NdisMAllocateSharedMemoryAsync(
-    IN  NDIS_HANDLE MiniportAdapterHandle,
-    IN  ULONG       Length,
-    IN  BOOLEAN     Cached,
-    IN  PVOID       Context)
-{
-  UNIMPLEMENTED
-
-  return NDIS_STATUS_FAILURE;
-}
-
 /*
  * @unimplemented
  */
@@ -701,6 +684,8 @@ NdisCopyBuffer(
  *     Length           = Number of bytes to copy
  */
 {
+    UNIMPLEMENTED
+
     *Status = NDIS_STATUS_FAILURE;
 }
 
diff --git a/reactos/drivers/network/ndis/ndis/buffer.c b/reactos/drivers/network/ndis/ndis/buffer.c
index e5caccee517..6499e4e9238 100644
--- a/reactos/drivers/network/ndis/ndis/buffer.c
+++ b/reactos/drivers/network/ndis/ndis/buffer.c
@@ -424,7 +424,7 @@ NdisAllocatePacket(
 
         KeReleaseSpinLock(&Pool->SpinLock.SpinLock, OldIrql);
 
-        RtlZeroMemory(&Temp->Private, sizeof(NDIS_PACKET_PRIVATE));
+        RtlZeroMemory(Temp, sizeof(NDIS_PACKET));
         Temp->Private.Pool = Pool;
 
         *Packet = Temp;
diff --git a/reactos/drivers/network/ndis/ndis/memory.c b/reactos/drivers/network/ndis/ndis/memory.c
index d6586912d04..822b98fdf69 100644
--- a/reactos/drivers/network/ndis/ndis/memory.c
+++ b/reactos/drivers/network/ndis/ndis/memory.c
@@ -245,6 +245,74 @@ NdisMFreeSharedMemory(
   ZwClose(ThreadHandle);
 }
 
+VOID
+NTAPI
+NdisMAllocateSharedMemoryPassive(
+    PVOID Context)
+/*
+ * FUNCTION:  Allocate a common buffer
+ * ARGUMENTS:
+ *     Context:  Pointer to a miniport shared memory context
+ * NOTES:
+ *     - Called by NdisMAllocateSharedMemoryAsync to do the actual work
+ */
+{
+  PMINIPORT_SHARED_MEMORY Memory = (PMINIPORT_SHARED_MEMORY)Context;
+
+  NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));
+
+  ASSERT(KeGetCurrentIrql() == PASSIVE_LEVEL);
+
+  Memory->VirtualAddress = Memory->AdapterObject->DmaOperations->AllocateCommonBuffer(
+      Memory->AdapterObject, Memory->Length, &Memory->PhysicalAddress, Memory->Cached);
+
+  if (Memory->Adapter->DriverHandle->MiniportCharacteristics.AllocateCompleteHandler)
+      Memory->Adapter->DriverHandle->MiniportCharacteristics.AllocateCompleteHandler(
+             Memory->Adapter, Memory->VirtualAddress, &Memory->PhysicalAddress, Memory->Length, Memory->Context);
+
+  ExFreePool(Memory);
+}
+
+
+/*
+ * @implemented
+ */
+NDIS_STATUS
+EXPORT
+NdisMAllocateSharedMemoryAsync(
+    IN  NDIS_HANDLE MiniportAdapterHandle,
+    IN  ULONG       Length,
+    IN  BOOLEAN     Cached,
+    IN  PVOID       Context)
+{
+  HANDLE ThreadHandle;
+  PLOGICAL_ADAPTER Adapter = (PLOGICAL_ADAPTER)MiniportAdapterHandle;
+  PMINIPORT_SHARED_MEMORY Memory;
+
+  NDIS_DbgPrint(MAX_TRACE,("Called.\n"));
+
+  ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL);
+
+  /* Must be NonpagedPool because by definition we're at DISPATCH_LEVEL */
+  Memory = ExAllocatePool(NonPagedPool, sizeof(MINIPORT_SHARED_MEMORY));
+
+  if(!Memory)
+    {
+      NDIS_DbgPrint(MID_TRACE, ("Insufficient resources\n"));
+      return NDIS_STATUS_FAILURE;
+    }
+
+  Memory->AdapterObject = Adapter->NdisMiniportBlock.SystemAdapterObject;
+  Memory->Length = Length;
+  Memory->Cached = Cached;
+  Memory->Adapter = &Adapter->NdisMiniportBlock;
+  Memory->Context = Context;
+
+  PsCreateSystemThread(&ThreadHandle, THREAD_ALL_ACCESS, 0, 0, 0, NdisMAllocateSharedMemoryPassive, Memory);
+  ZwClose(ThreadHandle);
+
+  return NDIS_STATUS_PENDING;
+}
 
 /*
  * @implemented