| From a124339ad28389093ed15eca990d39c51c5736cc Mon Sep 17 00:00:00 2001 |
| From: Don Skidmore <donald.c.skidmore@intel.com> |
| Date: Tue, 18 Jan 2011 22:53:47 +0000 |
| Subject: ixgbe: fix for 82599 erratum on Header Splitting |
| |
| From: Don Skidmore <donald.c.skidmore@intel.com> |
| |
| commit a124339ad28389093ed15eca990d39c51c5736cc 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> |
| |
| --- |
| drivers/net/ixgbe/ixgbe_main.c | 4 ++++ |
| 1 file changed, 4 insertions(+) |
| |
| --- a/drivers/net/ixgbe/ixgbe_main.c |
| +++ b/drivers/net/ixgbe/ixgbe_main.c |
| @@ -2134,6 +2134,10 @@ static void ixgbe_configure_rx(struct ix |
| /* 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; |
