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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 53B77C3F2CE for ; Wed, 4 Mar 2020 23:22:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 36016207FD for ; Wed, 4 Mar 2020 23:22:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388556AbgCDXVk (ORCPT ); Wed, 4 Mar 2020 18:21:40 -0500 Received: from mga17.intel.com ([192.55.52.151]:59250 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388531AbgCDXVj (ORCPT ); Wed, 4 Mar 2020 18:21:39 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 04 Mar 2020 15:21:38 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,515,1574150400"; d="scan'208";a="244094611" Received: from jtkirshe-desk1.jf.intel.com ([134.134.177.86]) by orsmga006.jf.intel.com with ESMTP; 04 Mar 2020 15:21:37 -0800 From: Jeff Kirsher To: davem@davemloft.net Cc: Mitch Williams , netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, Tony Nguyen , Andrew Bowers , Jeff Kirsher Subject: [net-next 02/16] iavf: Enable support for up to 16 queues Date: Wed, 4 Mar 2020 15:21:22 -0800 Message-Id: <20200304232136.4172118-3-jeffrey.t.kirsher@intel.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200304232136.4172118-1-jeffrey.t.kirsher@intel.com> References: <20200304232136.4172118-1-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: Mitch Williams Previous devices could only allocate 4 MSI-X vectors per VF so there was a limitation of 4 queues. 800-series hardware can allocate more than 4 MSI-X vectors, so expand the limitation on the number of queues that the driver can support to account for these capabilities. Fix ethtool channel operations to accommodate this change and adjust the reporting of max number of queues to what is given to us by the PF. Since we're not requesting queues above this value, just trigger reset to activate the queues, which we already own. Finally, fix a test condition that would display an incorrect error message. Signed-off-by: Mitch Williams Signed-off-by: Tony Nguyen Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/iavf/iavf.h | 2 +- .../net/ethernet/intel/iavf/iavf_ethtool.c | 20 +++++++------- drivers/net/ethernet/intel/iavf/iavf_main.c | 2 +- .../net/ethernet/intel/iavf/iavf_virtchnl.c | 27 ------------------- 4 files changed, 11 insertions(+), 40 deletions(-) diff --git a/drivers/net/ethernet/intel/iavf/iavf.h b/drivers/net/ethernet/intel/iavf/iavf.h index bd1b1ed323f4..bcd11b4b29df 100644 --- a/drivers/net/ethernet/intel/iavf/iavf.h +++ b/drivers/net/ethernet/intel/iavf/iavf.h @@ -81,7 +81,7 @@ struct iavf_vsi { #define IAVF_TX_DESC(R, i) (&(((struct iavf_tx_desc *)((R)->desc))[i])) #define IAVF_TX_CTXTDESC(R, i) \ (&(((struct iavf_tx_context_desc *)((R)->desc))[i])) -#define IAVF_MAX_REQ_QUEUES 4 +#define IAVF_MAX_REQ_QUEUES 16 #define IAVF_HKEY_ARRAY_SIZE ((IAVF_VFQF_HKEY_MAX_INDEX + 1) * 4) #define IAVF_HLUT_ARRAY_SIZE ((IAVF_VFQF_HLUT_MAX_INDEX + 1) * 4) diff --git a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c index 84c3d8d97ef6..f807e2c7597f 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c +++ b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c @@ -860,7 +860,7 @@ static void iavf_get_channels(struct net_device *netdev, struct iavf_adapter *adapter = netdev_priv(netdev); /* Report maximum channels */ - ch->max_combined = IAVF_MAX_REQ_QUEUES; + ch->max_combined = adapter->vsi_res->num_queue_pairs; ch->max_other = NONQ_VECS; ch->other_count = NONQ_VECS; @@ -881,14 +881,7 @@ static int iavf_set_channels(struct net_device *netdev, struct ethtool_channels *ch) { struct iavf_adapter *adapter = netdev_priv(netdev); - int num_req = ch->combined_count; - - if (num_req != adapter->num_active_queues && - !(adapter->vf_res->vf_cap_flags & - VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)) { - dev_info(&adapter->pdev->dev, "PF is not capable of queue negotiation.\n"); - return -EINVAL; - } + u32 num_req = ch->combined_count; if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && adapter->num_tc) { @@ -899,14 +892,19 @@ static int iavf_set_channels(struct net_device *netdev, /* All of these should have already been checked by ethtool before this * even gets to us, but just to be sure. */ - if (num_req <= 0 || num_req > IAVF_MAX_REQ_QUEUES) + if (num_req > adapter->vsi_res->num_queue_pairs) return -EINVAL; + if (num_req == adapter->num_active_queues) + return 0; + if (ch->rx_count || ch->tx_count || ch->other_count != NONQ_VECS) return -EINVAL; adapter->num_req_queues = num_req; - return iavf_request_queues(adapter, num_req); + adapter->flags |= IAVF_FLAG_REINIT_ITR_NEEDED; + iavf_schedule_reset(adapter); + return 0; } /** diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c index 76361bd468db..2050649848ba 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_main.c +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c @@ -3450,7 +3450,7 @@ int iavf_process_config(struct iavf_adapter *adapter) } if (num_req_queues && - num_req_queues != adapter->vsi_res->num_queue_pairs) { + num_req_queues > adapter->vsi_res->num_queue_pairs) { /* Problem. The PF gave us fewer queues than what we had * negotiated in our request. Need a reset to see if we can't * get back to a working state. diff --git a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c index 1ab9cb339acb..d58374c2c33d 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c +++ b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c @@ -396,33 +396,6 @@ void iavf_map_queues(struct iavf_adapter *adapter) kfree(vimi); } -/** - * iavf_request_queues - * @adapter: adapter structure - * @num: number of requested queues - * - * We get a default number of queues from the PF. This enables us to request a - * different number. Returns 0 on success, negative on failure - **/ -int iavf_request_queues(struct iavf_adapter *adapter, int num) -{ - struct virtchnl_vf_res_request vfres; - - if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) { - /* bail because we already have a command pending */ - dev_err(&adapter->pdev->dev, "Cannot request queues, command %d pending\n", - adapter->current_op); - return -EBUSY; - } - - vfres.num_queue_pairs = min_t(int, num, num_online_cpus()); - - adapter->current_op = VIRTCHNL_OP_REQUEST_QUEUES; - adapter->flags |= IAVF_FLAG_REINIT_ITR_NEEDED; - return iavf_send_pf_msg(adapter, VIRTCHNL_OP_REQUEST_QUEUES, - (u8 *)&vfres, sizeof(vfres)); -} - /** * iavf_add_ether_addrs * @adapter: adapter structure -- 2.24.1