From patchwork Tue Mar 21 12:21:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Piotr Raczynski X-Patchwork-Id: 13182684 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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CB8F8C761A6 for ; Tue, 21 Mar 2023 12:22:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231210AbjCUMWL (ORCPT ); Tue, 21 Mar 2023 08:22:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37978 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231206AbjCUMV4 (ORCPT ); Tue, 21 Mar 2023 08:21:56 -0400 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B1803D08B for ; Tue, 21 Mar 2023 05:21:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1679401310; x=1710937310; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4COKy9P1WkW/lYvaLYqdWGYhWYGDt+dwrS2vVJchwiM=; b=hYATtPiu9hwhCu/1l6mWigokO3xXQaCXcz+tBK5RGoMb2YZ0KvZLKGph tRbCkddt6BjgBtBQNmLbCbXPEJV5LxYYafuNpU3FVP2Pj4OqL2OXXluzW 254K6c/5gVN+T6g0eW//dSsVHz/rC3+qoXKCbakYbOwEzKXP3aW/wkV1S O76BDEF9YLqJFRdSvG5zIbrg9oOzLmbfW/wAoh6ExFLZmJwVQl5Ru7/NV sIRw/FVnb4BPNT4fLOczrlSFd9P9kLYRk5+z/Y4XfEWuihZXzHMgZxr2T 04oFP00bXe3auf6h9b9uaB4QzL0k4lOPOk3TvGmqqYnNlPp0JMZRkDraU A==; X-IronPort-AV: E=McAfee;i="6600,9927,10655"; a="318578082" X-IronPort-AV: E=Sophos;i="5.98,278,1673942400"; d="scan'208";a="318578082" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Mar 2023 05:21:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10655"; a="855673509" X-IronPort-AV: E=Sophos;i="5.98,278,1673942400"; d="scan'208";a="855673509" Received: from nimitz.igk.intel.com ([10.102.21.231]) by orsmga005.jf.intel.com with ESMTP; 21 Mar 2023 05:21:47 -0700 From: Piotr Raczynski To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, michal.swiatkowski@intel.com, shiraz.saleem@intel.com, jacob.e.keller@intel.com, sridhar.samudrala@intel.com, jesse.brandeburg@intel.com, aleksander.lobakin@intel.com, lukasz.czapnik@intel.com, Piotr Raczynski Subject: [PATCH net-next v1 4/8] ice: refactor VF control VSI interrupt handling Date: Tue, 21 Mar 2023 13:21:34 +0100 Message-Id: <20230321122138.3151670-5-piotr.raczynski@intel.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230321122138.3151670-1-piotr.raczynski@intel.com> References: <20230321122138.3151670-1-piotr.raczynski@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org All VF contrl VSIs share the same interrupt vector. Rurrently, a helper function dedicated for that directly sets ice_vsi::base_vector. Use helper that returns pointer to first found VF control VSI instead. Reviewed-by: Jacob Keller Signed-off-by: Piotr Raczynski --- drivers/net/ethernet/intel/ice/ice_lib.c | 76 ++++----------------- drivers/net/ethernet/intel/ice/ice_vf_lib.c | 33 +++++++++ drivers/net/ethernet/intel/ice/ice_vf_lib.h | 3 + 3 files changed, 49 insertions(+), 63 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c index 79e1557f77e8..f8c9c2c20e6d 100644 --- a/drivers/net/ethernet/intel/ice/ice_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_lib.c @@ -1473,36 +1473,6 @@ ice_get_res(struct ice_pf *pf, struct ice_res_tracker *res, u16 needed, u16 id) return ice_search_res(res, needed, id); } -/** - * ice_get_vf_ctrl_res - Get VF control VSI resource - * @pf: pointer to the PF structure - * @vsi: the VSI to allocate a resource for - * - * Look up whether another VF has already allocated the control VSI resource. - * If so, re-use this resource so that we share it among all VFs. - * - * Otherwise, allocate the resource and return it. - */ -static int ice_get_vf_ctrl_res(struct ice_pf *pf, struct ice_vsi *vsi) -{ - struct ice_vf *vf; - unsigned int bkt; - int base; - - rcu_read_lock(); - ice_for_each_vf_rcu(pf, bkt, vf) { - if (vf != vsi->vf && vf->ctrl_vsi_idx != ICE_NO_VSI) { - base = pf->vsi[vf->ctrl_vsi_idx]->base_vector; - rcu_read_unlock(); - return base; - } - } - rcu_read_unlock(); - - return ice_get_res(pf, pf->irq_tracker, vsi->num_q_vectors, - ICE_RES_VF_CTRL_VEC_ID); -} - /** * ice_vsi_setup_vector_base - Set up the base vector for the given VSI * @vsi: ptr to the VSI @@ -1536,7 +1506,14 @@ static int ice_vsi_setup_vector_base(struct ice_vsi *vsi) num_q_vectors = vsi->num_q_vectors; /* reserve slots from OS requested IRQs */ if (vsi->type == ICE_VSI_CTRL && vsi->vf) { - base = ice_get_vf_ctrl_res(pf, vsi); + struct ice_vsi *ctrl_vsi = ice_get_vf_ctrl_vsi(pf, vsi); + + if (ctrl_vsi) + base = ctrl_vsi->base_vector; + else + base = ice_get_res(pf, pf->irq_tracker, + vsi->num_q_vectors, + ICE_RES_VF_CTRL_VEC_ID); } else { base = ice_get_res(pf, pf->irq_tracker, num_q_vectors, vsi->idx); @@ -2611,37 +2588,6 @@ static void ice_set_agg_vsi(struct ice_vsi *vsi) vsi->agg_node->num_vsis); } -/** - * ice_free_vf_ctrl_res - Free the VF control VSI resource - * @pf: pointer to PF structure - * @vsi: the VSI to free resources for - * - * Check if the VF control VSI resource is still in use. If no VF is using it - * any more, release the VSI resource. Otherwise, leave it to be cleaned up - * once no other VF uses it. - */ -static void ice_free_vf_ctrl_res(struct ice_pf *pf, struct ice_vsi *vsi) -{ - struct ice_vf *vf; - unsigned int bkt; - - rcu_read_lock(); - ice_for_each_vf_rcu(pf, bkt, vf) { - if (vf != vsi->vf && vf->ctrl_vsi_idx != ICE_NO_VSI) { - rcu_read_unlock(); - return; - } - } - rcu_read_unlock(); - - /* No other VFs left that have control VSI. It is now safe to reclaim - * SW interrupts back to the common pool. - */ - ice_free_res(pf->irq_tracker, vsi->base_vector, - ICE_RES_VF_CTRL_VEC_ID); - pf->num_avail_sw_msix += vsi->num_q_vectors; -} - static int ice_vsi_cfg_tc_lan(struct ice_pf *pf, struct ice_vsi *vsi) { u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 }; @@ -2916,7 +2862,11 @@ void ice_vsi_decfg(struct ice_vsi *vsi) * cleared in the same manner. */ if (vsi->type == ICE_VSI_CTRL && vsi->vf) { - ice_free_vf_ctrl_res(pf, vsi); + struct ice_vsi *ctrl_vsi = ice_get_vf_ctrl_vsi(pf, vsi); + + if (!ctrl_vsi) + ice_free_res(pf->irq_tracker, vsi->base_vector, + ICE_RES_VF_CTRL_VEC_ID); } else if (vsi->type != ICE_VSI_VF) { /* reclaim SW interrupts back to the common pool */ ice_free_res(pf->irq_tracker, vsi->base_vector, vsi->idx); diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.c b/drivers/net/ethernet/intel/ice/ice_vf_lib.c index 89fd6982df09..de5ae6163fd0 100644 --- a/drivers/net/ethernet/intel/ice/ice_vf_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.c @@ -1310,3 +1310,36 @@ void ice_vf_set_initialized(struct ice_vf *vf) set_bit(ICE_VF_STATE_INIT, vf->vf_states); memset(&vf->vlan_v2_caps, 0, sizeof(vf->vlan_v2_caps)); } + +/** + * ice_get_vf_ctrl_vsi - Get first VF control VSI pointer + * @pf: the PF private structure + * @vsi: pointer to the VSI + * + * Return first found VF control VSI other than the vsi + * passed by parameter. This function is used to determine + * whether new resources have to be allocated for control VSI + * or they can be shared with existing one. + * + * Return found VF control VSI pointer other itself. Return + * NULL Otherwise. + * + */ +struct ice_vsi* +ice_get_vf_ctrl_vsi(struct ice_pf *pf, struct ice_vsi *vsi) +{ + struct ice_vsi *ctrl_vsi = NULL; + struct ice_vf *vf; + unsigned int bkt; + + rcu_read_lock(); + ice_for_each_vf_rcu(pf, bkt, vf) { + if (vf != vsi->vf && vf->ctrl_vsi_idx != ICE_NO_VSI) { + ctrl_vsi = pf->vsi[vf->ctrl_vsi_idx]; + break; + } + } + + rcu_read_unlock(); + return ctrl_vsi; +} diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.h b/drivers/net/ethernet/intel/ice/ice_vf_lib.h index e3cda6fb71ab..01a173c36bcc 100644 --- a/drivers/net/ethernet/intel/ice/ice_vf_lib.h +++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.h @@ -207,6 +207,9 @@ static inline u16 ice_vf_get_port_vlan_tpid(struct ice_vf *vf) #define ice_for_each_vf_rcu(pf, bkt, vf) \ hash_for_each_rcu((pf)->vfs.table, (bkt), (vf), entry) +struct ice_vsi * +ice_get_vf_ctrl_vsi(struct ice_pf *pf, struct ice_vsi *vsi); + #ifdef CONFIG_PCI_IOV struct ice_vf *ice_get_vf_by_id(struct ice_pf *pf, u16 vf_id); void ice_put_vf(struct ice_vf *vf);