Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755324Ab1CKUqf (ORCPT ); Fri, 11 Mar 2011 15:46:35 -0500 Received: from kroah.org ([198.145.64.141]:46538 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754066Ab1CKUnD (ORCPT ); Fri, 11 Mar 2011 15:43:03 -0500 X-Mailbox-Line: From gregkh@clark.kroah.org Fri Mar 11 12:41:09 2011 Message-Id: <20110311204109.738304614@clark.kroah.org> User-Agent: quilt/0.48-16.4 Date: Fri, 11 Mar 2011 12:40:05 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Don Skidmore , Jeff Kirsher Subject: [04/17] ixgbe: fix for 82599 erratum on Header Splitting In-Reply-To: <20110311204126.GA7223@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1543 Lines: 43 2.6.32-longterm review patch. If anyone has any objections, please let us know. ------------------ From: Don Skidmore 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 Tested-by: Stephen Ko Signed-off-by: Jeff Kirsher Signed-off-by: Greg Kroah-Hartman --- 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; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/