From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A720C35240 for ; Sun, 26 Jan 2020 09:03:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 424EC2071A for ; Sun, 26 Jan 2020 09:03:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="Q42pc62y" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726518AbgAZJD3 (ORCPT ); Sun, 26 Jan 2020 04:03:29 -0500 Received: from mail-pj1-f65.google.com ([209.85.216.65]:35129 "EHLO mail-pj1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726173AbgAZJD2 (ORCPT ); Sun, 26 Jan 2020 04:03:28 -0500 Received: by mail-pj1-f65.google.com with SMTP id q39so1857236pjc.0 for ; Sun, 26 Jan 2020 01:03:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=swMX3ZhvJus2lpAmQSbywZz47exFvO5e1kSg0QE7pdo=; b=Q42pc62yuShvaOj4JrmJO6xIK5FtbVA03dwuvGSJLLsLGtyMDJFcZOKbAz88edczbH eGmHDyf3XOnYBtlqZhBCTinaG2druxP6NJBOSEj5WD1pVTVHzHqAjjxwHD52zm90w8UK 7giEBQYsUVo5RNCpz//ufbYE2sUqmhSdKcF3s= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=swMX3ZhvJus2lpAmQSbywZz47exFvO5e1kSg0QE7pdo=; b=SXx9G4nQJeCxcCMZo/mqfRTn2nEiuq3o9kK7dLCW0Dd4TnMyTZCAUKpnEZc7EuIUyE U2Gahe9rVr4ABr6hmDDGKmG4Gx/CQAhaVAEz0ZGc2F418jZaeadYV44+QWR0OhAi7Gxu 5TQOI3vH9Vr6NCA30TP3qDX9EDklN7Tln9mFYsil3q+N5qMZeJheVLb254vXqMyRFLcG X9uK8ShorH0lvWjDC4ltD0podvgkoMOHmQP/ENIN4xjR6bNCnrFmSd05sZLH++1ncWXo 7NG4EGj7tYMTzDjoK2NY3+LTw36EsY9wPvSdxwPv1yyxEVSLT6A6/wQY8d44TqCWRTJi I3Lg== X-Gm-Message-State: APjAAAWGzGaf251Ooo8rBGG7k3vvnRNPkSZS6hKnHHyQO8rtn127HaWW j0VzLR4LSoccduqmMg9ZPAxrSw== X-Google-Smtp-Source: APXvYqxmvJd+Kr1HsrM8BZkZgcMGsRM5vMUX84uno+u5h7EMftrYNSMkJePucbCY8Hv/MmqJiORfPQ== X-Received: by 2002:a17:90a:3502:: with SMTP id q2mr8701185pjb.46.1580029408046; Sun, 26 Jan 2020 01:03:28 -0800 (PST) Received: from localhost.swdvt.lab.broadcom.com ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id i17sm11856315pfr.67.2020.01.26.01.03.26 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 26 Jan 2020 01:03:27 -0800 (PST) From: Michael Chan To: davem@davemloft.net Cc: netdev@vger.kernel.org Subject: [PATCH net-next 02/16] bnxt_en: Improve link up detection. Date: Sun, 26 Jan 2020 04:02:56 -0500 Message-Id: <1580029390-32760-3-git-send-email-michael.chan@broadcom.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1580029390-32760-1-git-send-email-michael.chan@broadcom.com> References: <1580029390-32760-1-git-send-email-michael.chan@broadcom.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In bnxt_update_phy_setting(), ethtool_get_link_ksettings() and bnxt_disable_an_for_lpbk(), we inconsistently use netif_carrier_ok() to determine link. Instead, we should use bp->link_info.link_up which has the true link state. The netif_carrier state may be off during self-test and while the device is being reset and may not always reflect the true link state. By always using bp->link_info.link_up, the code is now more consistent and more correct. Some unnecessary link toggles are now prevented with this patch. Signed-off-by: Michael Chan --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +- drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 16 ++++++++-------- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 198c69dc..4b6f746 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -9064,7 +9064,7 @@ static int bnxt_update_phy_setting(struct bnxt *bp) /* The last close may have shutdown the link, so need to call * PHY_CFG to bring it back up. */ - if (!netif_carrier_ok(bp->dev)) + if (!bp->link_info.link_up) update_link = true; if (!bnxt_eee_config_ok(bp)) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index 08d56ec..6171fa8 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -1462,15 +1462,15 @@ static int bnxt_get_link_ksettings(struct net_device *dev, ethtool_link_ksettings_add_link_mode(lk_ksettings, advertising, Autoneg); base->autoneg = AUTONEG_ENABLE; - if (link_info->phy_link_status == BNXT_LINK_LINK) + base->duplex = DUPLEX_UNKNOWN; + if (link_info->phy_link_status == BNXT_LINK_LINK) { bnxt_fw_to_ethtool_lp_adv(link_info, lk_ksettings); + if (link_info->duplex & BNXT_LINK_DUPLEX_FULL) + base->duplex = DUPLEX_FULL; + else + base->duplex = DUPLEX_HALF; + } ethtool_speed = bnxt_fw_to_ethtool_speed(link_info->link_speed); - if (!netif_carrier_ok(dev)) - base->duplex = DUPLEX_UNKNOWN; - else if (link_info->duplex & BNXT_LINK_DUPLEX_FULL) - base->duplex = DUPLEX_FULL; - else - base->duplex = DUPLEX_HALF; } else { base->autoneg = AUTONEG_DISABLE; ethtool_speed = @@ -2707,7 +2707,7 @@ static int bnxt_disable_an_for_lpbk(struct bnxt *bp, return rc; fw_speed = PORT_PHY_CFG_REQ_FORCE_LINK_SPEED_1GB; - if (netif_carrier_ok(bp->dev)) + if (bp->link_info.link_up) fw_speed = bp->link_info.link_speed; else if (fw_advertising & BNXT_LINK_SPEED_MSK_10GB) fw_speed = PORT_PHY_CFG_REQ_FORCE_LINK_SPEED_10GB; -- 2.5.1