[cgutman] 45004: - Add locking to ICMPSendDatagram

Author: cgutman
Date: Fri Jan  8 19:10:05 2010
New Revision: 45004

URL: http://svn.reactos.org/svn/reactos?rev=45004&view=rev
Log:
 - Add locking to ICMPSendDatagram

Modified:
    branches/aicom-network-branch/lib/drivers/ip/network/icmp.c

Modified: branches/aicom-network-branch/lib/drivers/ip/network/icmp.c
URL:
http://svn.reactos.org/svn/reactos/branches/aicom-network-branch/lib/driver…
==============================================================================
--- branches/aicom-network-branch/lib/drivers/ip/network/icmp.c [iso-8859-1] (original)
+++ branches/aicom-network-branch/lib/drivers/ip/network/icmp.c [iso-8859-1] Fri Jan  8
19:10:05 2010
@@ -159,6 +159,7 @@
     USHORT RemotePort;
     NTSTATUS Status;
     PNEIGHBOR_CACHE_ENTRY NCE;
+    KIRQL OldIrql;
 
     TI_DbgPrint(MID_TRACE,("Sending Datagram(%x %x %x %d)\n",
 			   AddrFile, ConnInfo, BufferData, DataSize));
@@ -177,6 +178,8 @@
     }
 
     TI_DbgPrint(MID_TRACE,("About to get route to destination\n"));
+
+    LockObject(AddrFile, &OldIrql);
 
     LocalAddress = AddrFile->Address;
     if (AddrIsUnspecified(&LocalAddress))
@@ -186,14 +189,20 @@
          * interface we're sending over
          */
         if(!(NCE = RouteGetRouteToDestination( &RemoteAddress )))
+        {
+             UnlockObject(AddrFile, OldIrql);
 	     return STATUS_NETWORK_UNREACHABLE;
+        }
 
         LocalAddress = NCE->Interface->Unicast;
     }
     else
     {
         if(!(NCE = NBLocateNeighbor( &LocalAddress )))
+        {
+             UnlockObject(AddrFile, OldIrql);
 	     return STATUS_INVALID_PARAMETER;
+        }
     }
 
     Status = PrepareICMPPacket( NCE->Interface,
@@ -203,17 +212,23 @@
                                 DataSize );
 
     if( !NT_SUCCESS(Status) )
+    {
+        UnlockObject(AddrFile, OldIrql);
 	return Status;
+    }
 
     TI_DbgPrint(MID_TRACE,("About to send datagram\n"));
 
     if (!NT_SUCCESS(Status = IPSendDatagram( &Packet, NCE, ICMPSendPacketComplete,
NULL )))
     {
+        UnlockObject(AddrFile, OldIrql);
         FreeNdisPacket(Packet.NdisPacket);
         return Status;
     }
 
     TI_DbgPrint(MID_TRACE,("Leaving\n"));
+
+    UnlockObject(AddrFile, OldIrql);
 
     return STATUS_SUCCESS;
 }