[gvg] 20297: Remember the last allocated port and try to allocate the next one on the

Remember the last allocated port and try to allocate the next one on the
following call (prevents 1024 from being allocated each time)
Modified: trunk/reactos/drivers/lib/ip/network/ports.c
Modified: trunk/reactos/drivers/net/tcpip/include/ports.h
  _____  

Modified: trunk/reactos/drivers/lib/ip/network/ports.c
--- trunk/reactos/drivers/lib/ip/network/ports.c	2005-12-21
21:29:07 UTC (rev 20296)
+++ trunk/reactos/drivers/lib/ip/network/ports.c	2005-12-22
11:44:16 UTC (rev 20297)
@@ -15,6 +15,8 @@

 		   UINT PortsToManage ) {
     PortSet->StartingPort = StartingPort;
     PortSet->PortsToOversee = PortsToManage;
+    PortSet->LastAllocatedPort = PortSet->StartingPort +
+                                 PortSet->PortsToOversee - 1;
     PortSet->ProtoBitBuffer =
 	PoolAllocateBuffer( (PortSet->PortsToOversee + 7) / 8 );
     RtlInitializeBitMap( &PortSet->ProtoBitmap,
@@ -52,12 +54,23 @@
 
 ULONG AllocateAnyPort( PPORT_SET PortSet ) {
     ULONG AllocatedPort;
+    ULONG Next;
 
+__asm__("int $3\n");
+    if (PortSet->StartingPort + PortSet->PortsToOversee <=
+        PortSet->LastAllocatedPort + 1) {
+	Next = PortSet->StartingPort;
+    } else {
+	Next = PortSet->LastAllocatedPort + 1;
+    }
+    Next -= PortSet->StartingPort;
+
     ExAcquireFastMutex( &PortSet->Mutex );
     AllocatedPort = RtlFindClearBits( &PortSet->ProtoBitmap, 1, 0 );
     if( AllocatedPort != (ULONG)-1 ) {
 	RtlSetBit( &PortSet->ProtoBitmap, AllocatedPort );
 	AllocatedPort += PortSet->StartingPort;
+	PortSet->LastAllocatedPort = AllocatedPort;
     }
     ExReleaseFastMutex( &PortSet->Mutex );
 
@@ -68,16 +81,28 @@
 
 ULONG AllocatePortFromRange( PPORT_SET PortSet, ULONG Lowest, ULONG
Highest ) {
     ULONG AllocatedPort;
+    ULONG Next;
 
+    if (PortSet->StartingPort + PortSet->PortsToOversee <=
+        PortSet->LastAllocatedPort + 1) {
+	Next = PortSet->StartingPort;
+    } else {
+	Next = PortSet->LastAllocatedPort + 1;
+    }
+    if (Next < Lowest || Highest <= Next) {
+	Next = Lowest;
+    }
+    Next -= PortSet->StartingPort;
     Lowest -= PortSet->StartingPort;
     Highest -= PortSet->StartingPort;
 
     ExAcquireFastMutex( &PortSet->Mutex );
-    AllocatedPort = RtlFindClearBits( &PortSet->ProtoBitmap, 1, Lowest
);
+    AllocatedPort = RtlFindClearBits( &PortSet->ProtoBitmap, 1, Next );
     if( AllocatedPort != (ULONG)-1 && AllocatedPort >= Lowest &&
         AllocatedPort <= Highest) {
 	RtlSetBit( &PortSet->ProtoBitmap, AllocatedPort );
 	AllocatedPort += PortSet->StartingPort;
+	PortSet->LastAllocatedPort = AllocatedPort;
     }
     ExReleaseFastMutex( &PortSet->Mutex );
 
  _____  

Modified: trunk/reactos/drivers/net/tcpip/include/ports.h
--- trunk/reactos/drivers/net/tcpip/include/ports.h	2005-12-21
21:29:07 UTC (rev 20296)
+++ trunk/reactos/drivers/net/tcpip/include/ports.h	2005-12-22
11:44:16 UTC (rev 20297)
@@ -16,6 +16,7 @@

     PVOID ProtoBitBuffer;
     UINT StartingPort;
     UINT PortsToOversee;
+    UINT LastAllocatedPort;
     FAST_MUTEX Mutex;
 } PORT_SET, *PPORT_SET;