From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [PATCH] ixgbe: fix for 82599 erratum on Header Splitting Date: Fri, 4 Mar 2011 23:06:07 -0800 Message-ID: <1299308767-28735-1-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 mga14.intel.com ([143.182.124.37]:26891 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750752Ab1CEHGL (ORCPT ); Sat, 5 Mar 2011 02:06:11 -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. 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