From patchwork Thu Dec 17 22:34:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Nguyen X-Patchwork-Id: 345339 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 5744AC2BBD4 for ; Thu, 17 Dec 2020 22:35:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2FEE5238A0 for ; Thu, 17 Dec 2020 22:35:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732136AbgLQWfd (ORCPT ); Thu, 17 Dec 2020 17:35:33 -0500 Received: from mga03.intel.com ([134.134.136.65]:25112 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731953AbgLQWfd (ORCPT ); Thu, 17 Dec 2020 17:35:33 -0500 IronPort-SDR: FhX1xeGM8CRAoHGR7sd3/xA0D7OYJPBlxGy3ez/Whz1XVf9/9dpe5wuirrQJO8NQZTke/Y1jXo jOo0abm9skEA== X-IronPort-AV: E=McAfee;i="6000,8403,9838"; a="175444101" X-IronPort-AV: E=Sophos;i="5.78,428,1599548400"; d="scan'208";a="175444101" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Dec 2020 14:34:21 -0800 IronPort-SDR: OAn+TXlvHL3ABvotrnsnBOCxrwGgUYjEW6+LacMQYsGpUADIWksbPyzRkgaXToxqDzW6f+XAaP XmmTwTmeeRwA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.78,428,1599548400"; d="scan'208";a="370133354" Received: from anguy11-desk2.jf.intel.com ([10.166.244.147]) by orsmga008.jf.intel.com with ESMTP; 17 Dec 2020 14:34:16 -0800 From: Tony Nguyen To: davem@davemloft.net, kuba@kernel.org Cc: Sylwester Dziedziuch , netdev@vger.kernel.org, sassmann@redhat.com, anthony.l.nguyen@intel.com, Konrad Jankowski Subject: [net 1/2] i40e: Fix Error I40E_AQ_RC_EINVAL when removing VFs Date: Thu, 17 Dec 2020 14:34:17 -0800 Message-Id: <20201217223418.3134992-2-anthony.l.nguyen@intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201217223418.3134992-1-anthony.l.nguyen@intel.com> References: <20201217223418.3134992-1-anthony.l.nguyen@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Sylwester Dziedziuch When removing VFs for PF added to bridge there was an error I40E_AQ_RC_EINVAL. It was caused by not properly resetting and reinitializing PF when adding/removing VFs. Changed how reset is performed when adding/removing VFs to properly reinitialize PFs VSI. Fixes: fc60861e9b00 ("i40e: start up in VEPA mode by default") Signed-off-by: Sylwester Dziedziuch Tested-by: Konrad Jankowski Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/i40e/i40e.h | 3 +++ drivers/net/ethernet/intel/i40e/i40e_main.c | 10 ++++++++++ drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 4 ++-- 3 files changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index d231a2cdd98f..118473dfdcbd 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -120,6 +120,7 @@ enum i40e_state_t { __I40E_RESET_INTR_RECEIVED, __I40E_REINIT_REQUESTED, __I40E_PF_RESET_REQUESTED, + __I40E_PF_RESET_AND_REBUILD_REQUESTED, __I40E_CORE_RESET_REQUESTED, __I40E_GLOBAL_RESET_REQUESTED, __I40E_EMP_RESET_INTR_RECEIVED, @@ -146,6 +147,8 @@ enum i40e_state_t { }; #define I40E_PF_RESET_FLAG BIT_ULL(__I40E_PF_RESET_REQUESTED) +#define I40E_PF_RESET_AND_REBUILD_FLAG \ + BIT_ULL(__I40E_PF_RESET_AND_REBUILD_REQUESTED) /* VSI state flags */ enum i40e_vsi_state_t { diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 1337686bd099..1db482d310c2 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -36,6 +36,8 @@ static int i40e_setup_misc_vector(struct i40e_pf *pf); static void i40e_determine_queue_usage(struct i40e_pf *pf); static int i40e_setup_pf_filter_control(struct i40e_pf *pf); static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired); +static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit, + bool lock_acquired); static int i40e_reset(struct i40e_pf *pf); static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired); static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf); @@ -8536,6 +8538,14 @@ void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags, bool lock_acquired) "FW LLDP is disabled\n" : "FW LLDP is enabled\n"); + } else if (reset_flags & I40E_PF_RESET_AND_REBUILD_FLAG) { + /* Request a PF Reset + * + * Resets PF and reinitializes PFs VSI. + */ + i40e_prep_for_reset(pf, lock_acquired); + i40e_reset_and_rebuild(pf, true, lock_acquired); + } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) { int v; diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c index 729c4f0d5ac5..21ee56420c3a 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -1772,7 +1772,7 @@ int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs) if (num_vfs) { if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) { pf->flags |= I40E_FLAG_VEB_MODE_ENABLED; - i40e_do_reset_safe(pf, I40E_PF_RESET_FLAG); + i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG); } ret = i40e_pci_sriov_enable(pdev, num_vfs); goto sriov_configure_out; @@ -1781,7 +1781,7 @@ int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs) if (!pci_vfs_assigned(pf->pdev)) { i40e_free_vfs(pf); pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED; - i40e_do_reset_safe(pf, I40E_PF_RESET_FLAG); + i40e_do_reset_safe(pf, I40E_PF_RESET_AND_REBUILD_FLAG); } else { dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n"); ret = -EINVAL;