[PATCH] mv643xx: add workaround for HW checksum generation bug

[PATCH] [NET] mv643xx: add workaround for HW checksum generation bug

The hardware checksum generator on the mv64xxx occasionally generates
an incorrect checksum.  This patch works around the issue and enables
hardware checksum generation.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/mv643xx_eth.h b/drivers/net/mv643xx_eth.h
index 57c4f8fbfdb6..7678b59c2952 100644
--- a/drivers/net/mv643xx_eth.h
+++ b/drivers/net/mv643xx_eth.h
@@ -49,7 +49,7 @@
 /* Checksum offload for Tx works for most packets, but
  * fails if previous packet sent did not use hw csum
  */
-#undef  MV643XX_CHECKSUM_OFFLOAD_TX
+#define MV643XX_CHECKSUM_OFFLOAD_TX
 #define MV643XX_NAPI
 #define MV643XX_TX_FAST_REFILL
 #undef  MV643XX_RX_QUEUE_FILL_ON_TASK   /* Does not work, yet */
@@ -217,6 +217,8 @@
 #define ETH_TX_ENABLE_INTERRUPT                 (BIT23)
 #define ETH_AUTO_MODE                           (BIT30)
 
+#define ETH_TX_IHL_SHIFT                        11
+
 /* typedefs */
 
 typedef enum _eth_func_ret_status {