From patchwork Fri May 3 23:09:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kirsher, Jeffrey T" X-Patchwork-Id: 1095082 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44wnsQ4n6Qz9s4V for ; Sat, 4 May 2019 09:10:02 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727238AbfECXKB (ORCPT ); Fri, 3 May 2019 19:10:01 -0400 Received: from mga11.intel.com ([192.55.52.93]:40730 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726042AbfECXJl (ORCPT ); Fri, 3 May 2019 19:09:41 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 May 2019 16:09:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,427,1549958400"; d="scan'208";a="136660076" Received: from jtkirshe-desk1.jf.intel.com ([134.134.177.96]) by orsmga007.jf.intel.com with ESMTP; 03 May 2019 16:09:40 -0700 From: Jeff Kirsher To: davem@davemloft.net Cc: Carolyn Wyborny , netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, Andrew Bowers , Jeff Kirsher Subject: [net-next v2 02/11] i40e: change behavior on PF in response to MDD event Date: Fri, 3 May 2019 16:09:30 -0700 Message-Id: <20190503230939.6739-3-jeffrey.t.kirsher@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190503230939.6739-1-jeffrey.t.kirsher@intel.com> References: <20190503230939.6739-1-jeffrey.t.kirsher@intel.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Carolyn Wyborny TX MDD events reported on the PF are the result of the PF misconfiguring a descriptor and not because of "bad actions" by anything else. No need to reset now because if it results in a Tx hang, the Tx hang check will take care of it. Signed-off-by: Carolyn Wyborny Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_main.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index b52a9d5644b8..3e15df1d5f52 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -9696,7 +9696,6 @@ static void i40e_handle_mdd_event(struct i40e_pf *pf) { struct i40e_hw *hw = &pf->hw; bool mdd_detected = false; - bool pf_mdd_detected = false; struct i40e_vf *vf; u32 reg; int i; @@ -9742,19 +9741,12 @@ static void i40e_handle_mdd_event(struct i40e_pf *pf) reg = rd32(hw, I40E_PF_MDET_TX); if (reg & I40E_PF_MDET_TX_VALID_MASK) { wr32(hw, I40E_PF_MDET_TX, 0xFFFF); - dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n"); - pf_mdd_detected = true; + dev_dbg(&pf->pdev->dev, "TX driver issue detected on PF\n"); } reg = rd32(hw, I40E_PF_MDET_RX); if (reg & I40E_PF_MDET_RX_VALID_MASK) { wr32(hw, I40E_PF_MDET_RX, 0xFFFF); - dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n"); - pf_mdd_detected = true; - } - /* Queue belongs to the PF, initiate a reset */ - if (pf_mdd_detected) { - set_bit(__I40E_PF_RESET_REQUESTED, pf->state); - i40e_service_event_schedule(pf); + dev_dbg(&pf->pdev->dev, "RX driver issue detected on PF\n"); } }