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Commit 712744be authored by Jesse Brandeburg's avatar Jesse Brandeburg Committed by Jeff Garzik
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ixgbe: fix rx csum return status misinterpretation 



the driver was misinterpreting rx_csum return value in the descriptor
so occassionally we would indicate an rx_csum error in our stats
when there was none.  This would have no effect on traffic because
we would just hand the packet to the stack anyway without the offload
flag set, but would increase CPU for those packets that needed a recompute.

Signed-off-by: default avatarJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent fa928c0c

drivers/net/ixgbe/ixgbe_main.c

+3 −5
Original line number Diff line number Diff line
@@ -420,14 +420,12 @@ static void ixgbe_receive_skb(struct ixgbe_adapter *adapter, 
 * @skb: skb currently being received and modified

 **/

static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,

					 u32 status_err,

					 struct sk_buff *skb)

                                     u32 status_err, struct sk_buff *skb)

{

	skb->ip_summed = CHECKSUM_NONE;



	/* Ignore Checksum bit is set, or rx csum disabled */

	if ((status_err & IXGBE_RXD_STAT_IXSM) ||

	    !(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))

	/* Rx csum disabled */

	if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))

		return;



	/* if IP and error */