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Added a work item to prevent stack overflow.

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svn path=/trunk/; revision=12915
This commit is contained in:
Art Yerkes 2005-01-10 04:43:05 +00:00
parent 31629a61a5
commit 2a03d2626d
1 changed files with 125 additions and 20 deletions
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145
reactos/drivers/lib/ip/network/loopback.c
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@ -11,6 +11,107 @@
#include "precomp.h"
PIP_INTERFACE Loopback = NULL;
typedef struct _LAN_WQ_ITEM {
LIST_ENTRY ListEntry;
PNDIS_PACKET Packet;
PLAN_ADAPTER Adapter;
UINT BytesTransferred;
} LAN_WQ_ITEM, *PLAN_WQ_ITEM;
/* Work around being called back into afd at Dpc level */
KSPIN_LOCK LoopWorkLock;
LIST_ENTRY LoopWorkList;
WORK_QUEUE_ITEM LoopWorkItem;
BOOLEAN LoopReceiveWorkerBusy = FALSE;
VOID STDCALL LoopReceiveWorker( PVOID Context ) {
PLIST_ENTRY ListEntry;
PLAN_WQ_ITEM WorkItem;
PNDIS_PACKET Packet;
PLAN_ADAPTER Adapter;
UINT BytesTransferred;
PNDIS_BUFFER NdisBuffer;
IP_PACKET IPPacket;
TI_DbgPrint(DEBUG_DATALINK, ("Called.\n"));
while( (ListEntry =
ExInterlockedRemoveHeadList( &LoopWorkList, &LoopWorkLock )) ) {
WorkItem = CONTAINING_RECORD(ListEntry, LAN_WQ_ITEM, ListEntry);
TI_DbgPrint(DEBUG_DATALINK, ("WorkItem: %x\n", WorkItem));
Packet = WorkItem->Packet;
Adapter = WorkItem->Adapter;
BytesTransferred = WorkItem->BytesTransferred;
ExFreePool( WorkItem );
IPPacket.NdisPacket = Packet;
TI_DbgPrint(DEBUG_DATALINK, ("Packet %x Adapter %x Trans %x\n",
Packet, Adapter, BytesTransferred));
NdisGetFirstBufferFromPacket(Packet,
&NdisBuffer,
&IPPacket.Header,
&IPPacket.ContigSize,
&IPPacket.TotalSize);
IPPacket.ContigSize = IPPacket.TotalSize = BytesTransferred;
/* Determine which upper layer protocol that should receive
this packet and pass it to the correct receive handler */
TI_DbgPrint(MID_TRACE,
("ContigSize: %d, TotalSize: %d, BytesTransferred: %d\n",
IPPacket.ContigSize, IPPacket.TotalSize,
BytesTransferred));
IPPacket.Position = 0;
IPReceive(Loopback, &IPPacket);
FreeNdisPacket( Packet );
}
TI_DbgPrint(DEBUG_DATALINK, ("Leaving\n"));
LoopReceiveWorkerBusy = FALSE;
}
VOID LoopSubmitReceiveWork(
NDIS_HANDLE BindingContext,
PNDIS_PACKET Packet,
NDIS_STATUS Status,
UINT BytesTransferred) {
PLAN_WQ_ITEM WQItem;
PLAN_ADAPTER Adapter = (PLAN_ADAPTER)BindingContext;
KIRQL OldIrql;
TcpipAcquireSpinLock( &LoopWorkLock, &OldIrql );
WQItem = ExAllocatePool( NonPagedPool, sizeof(LAN_WQ_ITEM) );
if( !WQItem ) {
TcpipReleaseSpinLock( &LoopWorkLock, OldIrql );
return;
}
WQItem->Packet = Packet;
WQItem->Adapter = Adapter;
WQItem->BytesTransferred = BytesTransferred;
InsertTailList( &LoopWorkList, &WQItem->ListEntry );
TI_DbgPrint(DEBUG_DATALINK, ("Packet %x Adapter %x BytesTrans %x\n",
Packet, Adapter, BytesTransferred));
if( !LoopReceiveWorkerBusy ) {
LoopReceiveWorkerBusy = TRUE;
ExQueueWorkItem( &LoopWorkItem, CriticalWorkQueue );
TI_DbgPrint(DEBUG_DATALINK,
("Work item inserted %x %x\n", &LoopWorkItem, WQItem));
} else {
DbgPrint("LOOP WORKER BUSY %x %x\n", &LoopWorkItem, WQItem);
}
TcpipReleaseSpinLock( &LoopWorkLock, OldIrql );
}
VOID LoopTransmit(
PVOID Context,
@ -28,30 +129,31 @@ VOID LoopTransmit(
* Type = LAN protocol type (unused)
*/
{
IP_PACKET IPPacket;
PCHAR PacketBuffer;
UINT PacketLength;
PNDIS_PACKET XmitPacket;
NDIS_STATUS NdisStatus;
ASSERT_KM_POINTER(NdisPacket);
ASSERT_KM_POINTER(PC(NdisPacket));
ASSERT_KM_POINTER(PC(NdisPacket)->DLComplete);
ASSERT_KM_POINTER(NdisPacket);
ASSERT_KM_POINTER(PC(NdisPacket));
ASSERT_KM_POINTER(PC(NdisPacket)->DLComplete);
TI_DbgPrint(MAX_TRACE, ("Called (NdisPacket = %x)\n", NdisPacket));
TI_DbgPrint(MAX_TRACE, ("Called (NdisPacket = %x)\n", NdisPacket));
GetDataPtr( NdisPacket, MaxLLHeaderSize, &PacketBuffer, &PacketLength );
IPPacket.NdisPacket = NdisPacket;
IPPacket.HeaderSize = 0;
GetDataPtr( NdisPacket, 0, (PCHAR *)&IPPacket.Header, &IPPacket.TotalSize );
IPPacket.Header += Offset;
IPPacket.ContigSize = IPPacket.TotalSize;
IPPacket.Position = Offset;
NdisStatus = AllocatePacketWithBuffer
( &XmitPacket, PacketBuffer, PacketLength );
TI_DbgPrint(MAX_TRACE,
("Doing receive (complete: %x, context %x, packet %x)\n",
PC(NdisPacket)->DLComplete, Context, NdisPacket));
IPReceive(Context, &IPPacket);
TI_DbgPrint(MAX_TRACE,
("Finished receive (complete: %x, context %x, packet %x)\n",
PC(NdisPacket)->DLComplete, Context, NdisPacket));
PC(NdisPacket)->DLComplete(PC(NdisPacket)->Context, NdisPacket, NDIS_STATUS_SUCCESS);
TI_DbgPrint(MAX_TRACE, ("Done\n"));
if( NT_SUCCESS(NdisStatus) ) {
LoopSubmitReceiveWork
( NULL, XmitPacket, STATUS_SUCCESS, PacketLength );
}
(PC(NdisPacket)->DLComplete)
( PC(NdisPacket)->Context, NdisPacket, STATUS_SUCCESS );
TI_DbgPrint(MAX_TRACE, ("Done\n"));
}
NDIS_STATUS LoopRegisterAdapter(
@ -73,6 +175,9 @@ NDIS_STATUS LoopRegisterAdapter(
TI_DbgPrint(MID_TRACE, ("Called.\n"));
InitializeListHead( &LoopWorkList );
ExInitializeWorkItem( &LoopWorkItem, LoopReceiveWorker, NULL );
/* Bind the adapter to network (IP) layer */
BindInfo.Context = NULL;
BindInfo.HeaderSize = 0;