Merge pull request #4 from bjsowa/dev-stm32-ignore-dropped-packets

Ignore packets whose buffers were dropped

Author: HTRamsey

source/portable/NetworkInterface/STM32/NetworkInterface.c

@@ -541,6 +541,12 @@ static UBaseType_t prvNetworkInterfaceInput( void )
     while ( ( HAL_ETH_ReadData( &xEthHandle, ( void ** ) &pxCurDescriptor ) == HAL_OK ) )
     {
         /*configASSERT( xEthHandle.RxDescList.RxDataLength <= EMAC_DATA_BUFFER_SIZE );*/
+        if( pxCurDescriptor == NULL )
+        {
+            /* Buffer was dropped, ignore packet */
+            continue;
+        }
+
         xResult++;
         pxCurDescriptor->pxInterface = pxMyInterface;
         pxCurDescriptor->pxEndPoint = FreeRTOS_MatchingEndpoint( pxMyInterface, pxCurDescriptor->pucEthernetBuffer );;