Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752655AbdHTKLW (ORCPT ); Sun, 20 Aug 2017 06:11:22 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:4514 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751634AbdHTKLT (ORCPT ); Sun, 20 Aug 2017 06:11:19 -0400 From: Ding Tianhong To: , , , , , , , , CC: Ding Tianhong Subject: [PATCH v3 net 0/2 RESEND] net: ixgbe: Use new flag to disable Relaxed Ordering Date: Sun, 20 Aug 2017 18:10:53 +0800 Message-ID: <1503223855-24616-1-git-send-email-dingtianhong@huawei.com> X-Mailer: git-send-email 1.8.5.2.msysgit.0 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.177.23.32] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090205.59996040.005E,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 5b2c237215551c7f1f62c3f65825ace1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1321 Lines: 31 The new flag PCI_DEV_FLAGS_NO_RELAXED_ORDERING has been added to indicate that Relaxed Ordering Attributes (RO) should not be used for Transaction Layer Packets (TLP) targeted toward these affected Root Port, it will clear the bit4 in the PCIe Device Control register, so the PCIe device drivers could query PCIe configuration space to determine if it can send TLPs to Root Port with the Relaxed Ordering Attributes set. The ixgbe driver could use this flag to determine if it can send TLPs to Root Port with the Relaxed Ordering Attributes set. v2: Simplify the original program according Alex's suggestion, remove the new ixgbe flag2 and only check the bit4 in the PCIe Device Control register. v3: Remove the code that clears the bits in DCA_T/RXCTRL, relaxed ordering should be enabled by the HW when the bus allow it. Ding Tianhong (2): Revert commit 1a8b6d76dc5b ("net:add one common config...") net: ixgbe: Use new IXGBE_FLAG2_ROOT_NO_RELAXED_ORDERING flag arch/Kconfig | 3 -- arch/sparc/Kconfig | 1 - drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c | 37 ++++++++++++------------- drivers/net/ethernet/intel/ixgbe/ixgbe_common.c | 32 +++++++++++---------- 4 files changed, 35 insertions(+), 38 deletions(-) -- 1.8.3.1