From patchwork Fri Feb 8 20:50:40 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anirudh Venkataramanan X-Patchwork-Id: 1038979 X-Patchwork-Delegate: jeffrey.t.kirsher@intel.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=osuosl.org (client-ip=140.211.166.133; helo=hemlock.osuosl.org; envelope-from=intel-wired-lan-bounces@osuosl.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 43x6qb491gz9sMp for ; Sat, 9 Feb 2019 07:54:19 +1100 (AEDT) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 27B8B81AB5; Fri, 8 Feb 2019 20:54:16 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kDXC9hD+wSkZ; Fri, 8 Feb 2019 20:54:06 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by hemlock.osuosl.org (Postfix) with ESMTP id E3F35821E2; Fri, 8 Feb 2019 20:54:05 +0000 (UTC) X-Original-To: intel-wired-lan@lists.osuosl.org Delivered-To: intel-wired-lan@lists.osuosl.org Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by ash.osuosl.org (Postfix) with ESMTP id 176931BF976 for ; Fri, 8 Feb 2019 20:52:28 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 149CB2379C for ; Fri, 8 Feb 2019 20:52:28 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oLuSv7-gEYdF for ; Fri, 8 Feb 2019 20:52:27 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by silver.osuosl.org (Postfix) with ESMTPS id 6C2FB2279E for ; Fri, 8 Feb 2019 20:52:27 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Feb 2019 12:50:44 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,348,1544515200"; d="scan'208";a="116332343" Received: from shasta.jf.intel.com ([10.166.241.11]) by orsmga008.jf.intel.com with ESMTP; 08 Feb 2019 12:50:44 -0800 From: Anirudh Venkataramanan To: intel-wired-lan@lists.osuosl.org Date: Fri, 8 Feb 2019 12:50:40 -0800 Message-Id: <20190208205043.11975-14-anirudh.venkataramanan@intel.com> X-Mailer: git-send-email 2.14.5 In-Reply-To: <20190208205043.11975-1-anirudh.venkataramanan@intel.com> References: <20190208205043.11975-1-anirudh.venkataramanan@intel.com> Subject: [Intel-wired-lan] [PATCH S11 13/16] ice: check for a leaf node presence X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" From: Victor Raj check for a leaf node presence for a given VSI. This check is required before removing a VSI since VSIs can't be removed with enabled queues (with leaf nodes) from the FW scheduler tree unless its a reset. Signed-off-by: Victor Raj Reviewed-by: Bruce Allan Signed-off-by: Anirudh Venkataramanan Tested-by: Andrew Bowers --- drivers/net/ethernet/intel/ice/ice_sched.c | 23 +++++++++++++++++++++++ drivers/net/ethernet/intel/ice/ice_status.h | 1 + 2 files changed, 24 insertions(+) diff --git a/drivers/net/ethernet/intel/ice/ice_sched.c b/drivers/net/ethernet/intel/ice/ice_sched.c index f355f59d8b64..56049739a250 100644 --- a/drivers/net/ethernet/intel/ice/ice_sched.c +++ b/drivers/net/ethernet/intel/ice/ice_sched.c @@ -1615,6 +1615,23 @@ ice_sched_rm_agg_vsi_info(struct ice_port_info *pi, u16 vsi_handle) } } +/** + * ice_sched_is_leaf_node_present - check for a leaf node in the sub-tree + * @node: pointer to the sub-tree node + * + * This function checks for a leaf node presence in a given sub-tree node. + */ +static bool ice_sched_is_leaf_node_present(struct ice_sched_node *node) +{ + u8 i; + + for (i = 0; i < node->num_children; i++) + if (ice_sched_is_leaf_node_present(node->children[i])) + return true; + /* check for a leaf node */ + return (node->info.data.elem_type == ICE_AQC_ELEM_TYPE_LEAF); +} + /** * ice_sched_rm_vsi_cfg - remove the VSI and its children nodes * @pi: port information structure @@ -1649,6 +1666,12 @@ ice_sched_rm_vsi_cfg(struct ice_port_info *pi, u16 vsi_handle, u8 owner) if (!vsi_node) continue; + if (ice_sched_is_leaf_node_present(vsi_node)) { + ice_debug(pi->hw, ICE_DBG_SCHED, + "VSI has leaf nodes in TC %d\n", i); + status = ICE_ERR_IN_USE; + goto exit_sched_rm_vsi_cfg; + } while (j < vsi_node->num_children) { if (vsi_node->children[j]->owner == owner) { ice_free_sched_node(pi, vsi_node->children[j]); diff --git a/drivers/net/ethernet/intel/ice/ice_status.h b/drivers/net/ethernet/intel/ice/ice_status.h index f49f299ddf2c..683f48824a29 100644 --- a/drivers/net/ethernet/intel/ice/ice_status.h +++ b/drivers/net/ethernet/intel/ice/ice_status.h @@ -22,6 +22,7 @@ enum ice_status { ICE_ERR_OUT_OF_RANGE = -13, ICE_ERR_ALREADY_EXISTS = -14, ICE_ERR_DOES_NOT_EXIST = -15, + ICE_ERR_IN_USE = -16, ICE_ERR_MAX_LIMIT = -17, ICE_ERR_RESET_ONGOING = -18, ICE_ERR_BUF_TOO_SHORT = -52,