From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id E134EA0C46; Thu, 8 Apr 2021 22:49:36 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E13EF1411EC; Thu, 8 Apr 2021 22:49:32 +0200 (CEST) Received: from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129]) by mails.dpdk.org (Postfix) with ESMTP id B69B81411E3 for ; Thu, 8 Apr 2021 22:49:30 +0200 (CEST) Received: from Internal Mail-Server by MTLPINE1 (envelope-from shirik@nvidia.com) with SMTP; 8 Apr 2021 23:49:29 +0300 Received: from nvidia.com (c-236-0-60-063.mtl.labs.mlnx [10.236.0.63]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 138KnAJM028067; Thu, 8 Apr 2021 23:49:29 +0300 From: Shiri Kuzin To: dev@dpdk.org Cc: matan@nvidia.com, gakhil@marvell.com, suanmingm@nvidia.com, Dekel Peled Date: Thu, 8 Apr 2021 23:48:28 +0300 Message-Id: <20210408204849.9543-4-shirik@nvidia.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20210408204849.9543-1-shirik@nvidia.com> References: <1615447568-260965-1-git-send-email-matan@nvidia.com> <20210408204849.9543-1-shirik@nvidia.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH 03/24] common/mlx5: optimize read of general obj type caps X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Dekel Peled General object types support is indicated in bitmap general_obj_types, which is part of HCA capabilities list. Currently this bitmap is read multiple times, and each time a different bit is extracted. This patch optimizes the code, reading the bitmap once into a local variable, and then extracting the required bits. Signed-off-by: Dekel Peled Acked-by: Matan Azrad --- drivers/common/mlx5/mlx5_devx_cmds.c | 30 +++++++++++++++------------- 1 file changed, 16 insertions(+), 14 deletions(-) diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c index dfd2cb6af4..8e4a5d71b6 100644 --- a/drivers/common/mlx5/mlx5_devx_cmds.c +++ b/drivers/common/mlx5/mlx5_devx_cmds.c @@ -646,6 +646,7 @@ mlx5_devx_cmd_query_hca_attr(void *ctx, uint32_t out[MLX5_ST_SZ_DW(query_hca_cap_out)] = {0}; void *hcattr; int status, syndrome, rc, i; + uint64_t general_obj_types_supported = 0; MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP); MLX5_SET(query_hca_cap_in, in, op_mod, @@ -695,15 +696,6 @@ mlx5_devx_cmd_query_hca_attr(void *ctx, attr->max_geneve_tlv_option_data_len = MLX5_GET(cmd_hca_cap, hcattr, max_geneve_tlv_option_data_len); attr->qos.sup = MLX5_GET(cmd_hca_cap, hcattr, qos); - attr->vdpa.valid = !!(MLX5_GET64(cmd_hca_cap, hcattr, - general_obj_types) & - MLX5_GENERAL_OBJ_TYPES_CAP_VIRTQ_NET_Q); - attr->vdpa.queue_counters_valid = !!(MLX5_GET64(cmd_hca_cap, hcattr, - general_obj_types) & - MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_Q_COUNTERS); - attr->parse_graph_flex_node = !!(MLX5_GET64(cmd_hca_cap, hcattr, - general_obj_types) & - MLX5_GENERAL_OBJ_TYPES_CAP_PARSE_GRAPH_FLEX_NODE); attr->wqe_index_ignore = MLX5_GET(cmd_hca_cap, hcattr, wqe_index_ignore_cap); attr->cross_channel = MLX5_GET(cmd_hca_cap, hcattr, cd); @@ -721,12 +713,22 @@ mlx5_devx_cmd_query_hca_attr(void *ctx, attr->regex = MLX5_GET(cmd_hca_cap, hcattr, regexp); attr->regexp_num_of_engines = MLX5_GET(cmd_hca_cap, hcattr, regexp_num_of_engines); - attr->flow_hit_aso = !!(MLX5_GET64(cmd_hca_cap, hcattr, - general_obj_types) & + /* Read the general_obj_types bitmap and extract the relevant bits. */ + general_obj_types_supported = MLX5_GET64(cmd_hca_cap, hcattr, + general_obj_types); + attr->vdpa.valid = !!(general_obj_types_supported & + MLX5_GENERAL_OBJ_TYPES_CAP_VIRTQ_NET_Q); + attr->vdpa.queue_counters_valid = + !!(general_obj_types_supported & + MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_Q_COUNTERS); + attr->parse_graph_flex_node = + !!(general_obj_types_supported & + MLX5_GENERAL_OBJ_TYPES_CAP_PARSE_GRAPH_FLEX_NODE); + attr->flow_hit_aso = !!(general_obj_types_supported & MLX5_GENERAL_OBJ_TYPES_CAP_FLOW_HIT_ASO); - attr->geneve_tlv_opt = !!(MLX5_GET64(cmd_hca_cap, hcattr, - general_obj_types) & - MLX5_GENERAL_OBJ_TYPES_CAP_GENEVE_TLV_OPT); + attr->geneve_tlv_opt = !!(general_obj_types_supported & + MLX5_GENERAL_OBJ_TYPES_CAP_GENEVE_TLV_OPT); + /* Add reading of other GENERAL_OBJ_TYPES_CAP bits above this line. */ attr->log_max_cq = MLX5_GET(cmd_hca_cap, hcattr, log_max_cq); attr->log_max_qp = MLX5_GET(cmd_hca_cap, hcattr, log_max_qp); attr->log_max_cq_sz = MLX5_GET(cmd_hca_cap, hcattr, log_max_cq_sz); -- 2.21.0