From 25a49804c077d476802ed6517ded03f6ae6121e4 Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Fri, 5 Jul 2013 08:11:18 +0000
Subject: [PATCH] [RTL8139] - Fix receive stalling if more than 10 packets are
 in the receive window - Tune configuration to use larger DMA transfers and
 begin DMA earlier

svn path=/trunk/; revision=59429
---
 reactos/drivers/network/dd/rtl8139/interrupt.c | 12 ++++++++++--
 reactos/drivers/network/dd/rtl8139/nic.h       | 13 ++++++-------
 2 files changed, 16 insertions(+), 9 deletions(-)

diff --git a/reactos/drivers/network/dd/rtl8139/interrupt.c b/reactos/drivers/network/dd/rtl8139/interrupt.c
index 18da02596b3..659e72d4b34 100644
--- a/reactos/drivers/network/dd/rtl8139/interrupt.c
+++ b/reactos/drivers/network/dd/rtl8139/interrupt.c
@@ -78,7 +78,6 @@ MiniportHandleInterrupt (
     )
 {
     PRTL_ADAPTER adapter = (PRTL_ADAPTER)MiniportAdapterContext;
-    ULONG i;
     ULONG txStatus;
     UCHAR command;
     PPACKET_HEADER nicHeader;
@@ -146,7 +145,7 @@ MiniportHandleInterrupt (
     //
     if (adapter->InterruptPending & (R_I_RXOK | R_I_RXERR))
     {
-        for (i = 0; i < MAX_RECEIVES_PER_INT; i++)
+        for (;;)
         {
             NdisRawReadPortUchar(adapter->IoBase + R_CMD, &command);
             if (command & R_CMD_RXEMPTY)
@@ -200,6 +199,15 @@ MiniportHandleInterrupt (
             adapter->ReceiveOffset += nicHeader->PacketLength + sizeof(PACKET_HEADER);
             adapter->ReceiveOffset = (adapter->ReceiveOffset + 3) & ~3;
             NdisRawWritePortUshort(adapter->IoBase + R_CAPR, adapter->ReceiveOffset - 0x10);
+            
+            if (adapter->InterruptPending & (R_I_RXOVRFLW | R_I_FIFOOVR))
+            {
+                //
+                // We can only clear these interrupts once CAPR has been reset
+                //
+                NdisRawWritePortUshort(adapter->IoBase + R_IS, R_I_RXOVRFLW | R_I_FIFOOVR);
+                adapter->InterruptPending &= ~(R_I_RXOVRFLW | R_I_FIFOOVR);
+            }
         }
         
         NdisMEthIndicateReceiveComplete(adapter->MiniportAdapterHandle);
diff --git a/reactos/drivers/network/dd/rtl8139/nic.h b/reactos/drivers/network/dd/rtl8139/nic.h
index e04e58d1ccf..c04963dccf9 100644
--- a/reactos/drivers/network/dd/rtl8139/nic.h
+++ b/reactos/drivers/network/dd/rtl8139/nic.h
@@ -12,9 +12,8 @@
 #define RESOURCE_LIST_TAG 'Rltr'
 
 #define MAX_RESET_ATTEMPTS 25
-#define MAX_RECEIVES_PER_INT 10
-#define RECEIVE_BUFFER_SIZE      (32768)
-#define FULL_RECEIVE_BUFFER_SIZE (32768 + 16 + 2048)
+#define RECEIVE_BUFFER_SIZE      (65536)
+#define FULL_RECEIVE_BUFFER_SIZE (65536 + 16 + 2048)
 #define RECV_CRC_LENGTH 4
 
 #define MINIMUM_FRAME_SIZE 60
@@ -22,11 +21,11 @@
 
 #define DRIVER_VERSION 1
 
-// 32K RX buffer, 512 byte DMA bursts
-#define RC_VAL (0x0001680)
+// 1/2 packet early RX, 512 byte FIFO threshold, 64K RX buffer, unlimited DMA bursts, WRAP
+#define RC_VAL (0x800BF80)
 
-// 1024 byte DMA bursts
-#define TC_VAL (0x600)
+// 2048 byte DMA bursts
+#define TC_VAL (0x700)
 
 typedef struct _RTL_ADAPTER {
     NDIS_HANDLE MiniportAdapterHandle;