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=-9.8 required=3.0 tests=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 ADADDC3A5A0 for ; Mon, 19 Aug 2019 16:17:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 88BD822CE9 for ; Mon, 19 Aug 2019 16:17:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727891AbfHSQRR (ORCPT ); Mon, 19 Aug 2019 12:17:17 -0400 Received: from mga17.intel.com ([192.55.52.151]:22455 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726168AbfHSQRO (ORCPT ); Mon, 19 Aug 2019 12:17:14 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Aug 2019 09:17:14 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,405,1559545200"; d="scan'208";a="207052941" Received: from jtkirshe-desk1.jf.intel.com ([134.134.177.96]) by fmsmga002.fm.intel.com with ESMTP; 19 Aug 2019 09:17:15 -0700 From: Jeff Kirsher To: davem@davemloft.net Cc: Paul Greenwalt , netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, Andrew Bowers , Jeff Kirsher Subject: [net-next v2 04/14] ice: fix set pause param autoneg check Date: Mon, 19 Aug 2019 09:16:58 -0700 Message-Id: <20190819161708.3763-5-jeffrey.t.kirsher@intel.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190819161708.3763-1-jeffrey.t.kirsher@intel.com> References: <20190819161708.3763-1-jeffrey.t.kirsher@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Paul Greenwalt When ETHTOOL_GLINKSETTINGS is defined get pause param pause->autoneg reports SW configured setting, however when not defined get pause param pause->autoneg reports the link status. Set pause param needs to compare pause->autoneg with the same source as get pause param to block the user from changing autoneg with the set pause param option, or the user may be incorrectly blocked from changing Rx|Tx pause settings. Signed-off-by: Paul Greenwalt Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ice/ice_ethtool.c | 28 +++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c index d3ba535bd65a..d02b72e72423 100644 --- a/drivers/net/ethernet/intel/ice/ice_ethtool.c +++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c @@ -2856,6 +2856,7 @@ static int ice_set_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *pause) { struct ice_netdev_priv *np = netdev_priv(netdev); + struct ice_aqc_get_phy_caps_data *pcaps; struct ice_link_status *hw_link_info; struct ice_pf *pf = np->vsi->back; struct ice_dcbx_cfg *dcbx_cfg; @@ -2866,6 +2867,7 @@ ice_set_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *pause) u8 aq_failures; bool link_up; int err = 0; + u32 is_an; pi = vsi->port_info; hw_link_info = &pi->phy.link_info; @@ -2880,7 +2882,31 @@ ice_set_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *pause) return -EOPNOTSUPP; } - if (pause->autoneg != (hw_link_info->an_info & ICE_AQ_AN_COMPLETED)) { + /* Get pause param reports configured and negotiated flow control pause + * when ETHTOOL_GLINKSETTINGS is defined. Since ETHTOOL_GLINKSETTINGS is + * defined get pause param pause->autoneg reports SW configured setting, + * so compare pause->autoneg with SW configured to prevent the user from + * using set pause param to chance autoneg. + */ + pcaps = devm_kzalloc(&vsi->back->pdev->dev, sizeof(*pcaps), + GFP_KERNEL); + if (!pcaps) + return -ENOMEM; + + /* Get current PHY config */ + status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_SW_CFG, pcaps, + NULL); + if (status) { + devm_kfree(&vsi->back->pdev->dev, pcaps); + return -EIO; + } + + is_an = ((pcaps->caps & ICE_AQC_PHY_AN_MODE) ? + AUTONEG_ENABLE : AUTONEG_DISABLE); + + devm_kfree(&vsi->back->pdev->dev, pcaps); + + if (pause->autoneg != is_an) { netdev_info(netdev, "To change autoneg please use: ethtool -s autoneg \n"); return -EOPNOTSUPP; } -- 2.21.0