From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [stable-2.6.32.y] ixgbe: fix for 82599 erratum on Header Splitting Date: Sat, 5 Mar 2011 15:14:50 -0800 Message-ID: <1299366890-10333-1-git-send-email-jeffrey.t.kirsher@intel.com> Cc: Don Skidmore , stable@kernel.org, netdev@vger.kernel.org, Jeff Kirsher To: gregkh@suse.de Return-path: Received: from mga11.intel.com ([192.55.52.93]:45169 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751667Ab1CEXQq (ORCPT ); Sat, 5 Mar 2011 18:16:46 -0500 Sender: netdev-owner@vger.kernel.org List-ID: From: Don Skidmore 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. This is an updated version of the following commit which applies to the stable linux-2.6.32.y tree: commit a124339ad28389093ed15eca990d39c51c5736cc Author: Don Skidmore Date: Tue Jan 18 22:53:47 2011 +0000 ixgbe: fix for 82599 erratum on Header Splitting Please aaply this for the .32 longterm tree. Signed-off-by: Don Skidmore Tested-by: Stephen Ko Signed-off-by: Jeff Kirsher --- drivers/net/ixgbe/ixgbe_main.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index a873c5d..67d1d97 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -2131,6 +2131,10 @@ 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; -- 1.7.4