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ixgbe: fix for 82599 erratum on Header Splitting

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commit a124339ad2 upstream.

We have found a hardware erratum on 82599 hardware that can lead to
unpredictable behavior when Header Splitting mode is enabled.  So
we are no longer enabling this feature on affected hardware.

Please see the 82599 Specification Update for more information.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Don Skidmore 2011-01-18 22:53:47 +00:00 committed by Greg Kroah-Hartman
parent a33be6e69f
commit d7a0289987
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ixgbe/ixgbe_main.c
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@ -2134,6 +2134,10 @@ static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
/* Decide whether to use packet split mode or not */
adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
/* Disable packet split due to 82599 erratum #45 */
if (hw->mac.type == ixgbe_mac_82599EB)
adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
/* Set the RX buffer length according to the mode */
if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
rx_buf_len = IXGBE_RX_HDR_SIZE;