# HG changeset patch
# User Tim Deegan <Tim.Deegan@xensource.com>
# Date 1184592534 -3600
# Node ID d99903a98ad018c9aed180480577f56ce015fd30
# Parent  1158b6115b1413aa5d92ebe5b4ab2640eded40e3
[HVM] Qemu rtl8139: correct rx CRC calculation
Signed-off-by: Tim Deegan <Tim.Deegan@xensource.com>

Index: xen-3.1-testing/tools/ioemu/hw/rtl8139.c
===================================================================
--- xen-3.1-testing.orig/tools/ioemu/hw/rtl8139.c	2007-08-20 15:15:42.000000000 -0600
+++ xen-3.1-testing/tools/ioemu/hw/rtl8139.c	2007-08-20 15:15:43.000000000 -0600
@@ -53,9 +53,8 @@
 /* debug RTL8139 card C+ mode only */
 //#define DEBUG_RTL8139CP 1
 
-/* RTL8139 provides frame CRC with received packet, this feature seems to be
-   ignored by most drivers, disabled by default */
-//#define RTL8139_CALCULATE_RXCRC 1
+/* Calculate CRCs propoerly on Rx packets */
+#define RTL8139_CALCULATE_RXCRC 1
 
 /* Uncomment to enable on-board timer interrupts */
 //#define RTL8139_ONBOARD_TIMER 1
@@ -1030,7 +1029,7 @@
 
         /* write checksum */
 #if defined (RTL8139_CALCULATE_RXCRC)
-        val = cpu_to_le32(crc32(~0, buf, size));
+        val = cpu_to_le32(crc32(0, buf, size));
 #else
         val = 0;
 #endif
@@ -1136,7 +1135,7 @@
 
         /* write checksum */
 #if defined (RTL8139_CALCULATE_RXCRC)
-        val = cpu_to_le32(crc32(~0, buf, size));
+        val = cpu_to_le32(crc32(0, buf, size));
 #else
         val = 0;
 #endif