From patchwork Thu Jan 28 21:38:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Nguyen X-Patchwork-Id: 12054599 X-Patchwork-Delegate: kuba@kernel.org 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 8B37AC433E6 for ; Thu, 28 Jan 2021 21:39:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 640B264DD8 for ; Thu, 28 Jan 2021 21:39:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231544AbhA1Vjl (ORCPT ); Thu, 28 Jan 2021 16:39:41 -0500 Received: from mga12.intel.com ([192.55.52.136]:19348 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231531AbhA1Vj1 (ORCPT ); Thu, 28 Jan 2021 16:39:27 -0500 IronPort-SDR: 3w4A+YIVuC9mG/QbvQLm/zQqSTarY74WQwxiHiTqmsDqQoleU0ljGXhTMifylMk7kJh6hP43KX NScgGVJ0bvJA== X-IronPort-AV: E=McAfee;i="6000,8403,9878"; a="159491179" X-IronPort-AV: E=Sophos;i="5.79,383,1602572400"; d="scan'208";a="159491179" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jan 2021 13:38:21 -0800 IronPort-SDR: SJr3AYAEnVqd4j/suAaS+uOv7LH9bj/EQTqugE4ni/IFyyyWkJh53gdfDbUpbgcFA72TTxMIp8 rIaICtuUGRlQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.79,383,1602572400"; d="scan'208";a="474241016" Received: from anguy11-desk2.jf.intel.com ([10.166.244.147]) by fmsmga001.fm.intel.com with ESMTP; 28 Jan 2021 13:38:20 -0800 From: Tony Nguyen To: davem@davemloft.net, kuba@kernel.org Cc: Aleksandr Loktionov , netdev@vger.kernel.org, sassmann@redhat.com, anthony.l.nguyen@intel.com, Arkadiusz Kubalewski , Konrad Jankowski Subject: [PATCH net 4/4] i40e: Revert "i40e: don't report link up for a VF who hasn't enabled queues" Date: Thu, 28 Jan 2021 13:38:51 -0800 Message-Id: <20210128213851.2499012-5-anthony.l.nguyen@intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210128213851.2499012-1-anthony.l.nguyen@intel.com> References: <20210128213851.2499012-1-anthony.l.nguyen@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Aleksandr Loktionov This reverts commit 2ad1274fa35ace5c6360762ba48d33b63da2396c VF queues were not brought up when PF was brought up after being downed if the VF driver disabled VFs queues during PF down. This could happen in some older or external VF driver implementations. The problem was that PF driver used vf->queues_enabled as a condition to decide what link-state it would send out which caused the issue. Remove the check for vf->queues_enabled in the VF link notify. Now VF will always be notified of the current link status. Also remove the queues_enabled member from i40e_vf structure as it is not used anymore. Otherwise VNF implementation was broken and caused a link flap. Fixes: 2ad1274fa35a ("i40e: don't report link up for a VF who hasn't enabled") Signed-off-by: Aleksandr Loktionov Signed-off-by: Arkadiusz Kubalewski Tested-by: Konrad Jankowski Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 13 +------------ drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 1 - 2 files changed, 1 insertion(+), 13 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c index 7efc61aacb0a..1b6ec9be155a 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -55,12 +55,7 @@ static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf) pfe.event = VIRTCHNL_EVENT_LINK_CHANGE; pfe.severity = PF_EVENT_SEVERITY_INFO; - - /* Always report link is down if the VF queues aren't enabled */ - if (!vf->queues_enabled) { - pfe.event_data.link_event.link_status = false; - pfe.event_data.link_event.link_speed = 0; - } else if (vf->link_forced) { + if (vf->link_forced) { pfe.event_data.link_event.link_status = vf->link_up; pfe.event_data.link_event.link_speed = (vf->link_up ? i40e_virtchnl_link_speed(ls->link_speed) : 0); @@ -70,7 +65,6 @@ static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf) pfe.event_data.link_event.link_speed = i40e_virtchnl_link_speed(ls->link_speed); } - i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT, 0, (u8 *)&pfe, sizeof(pfe), NULL); } @@ -2443,8 +2437,6 @@ static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg) } } - vf->queues_enabled = true; - error_param: /* send the response to the VF */ return i40e_vc_send_resp_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES, @@ -2466,9 +2458,6 @@ static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg) struct i40e_pf *pf = vf->pf; i40e_status aq_ret = 0; - /* Immediately mark queues as disabled */ - vf->queues_enabled = false; - if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) { aq_ret = I40E_ERR_PARAM; goto error_param; diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h index 5491215d81de..091e32c1bb46 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h @@ -98,7 +98,6 @@ struct i40e_vf { unsigned int tx_rate; /* Tx bandwidth limit in Mbps */ bool link_forced; bool link_up; /* only valid if VF link is forced */ - bool queues_enabled; /* true if the VF queues are enabled */ bool spoofchk; u16 num_vlan;