From patchwork Tue May 1 09:58:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shahaf Shuler X-Patchwork-Id: 39196 X-Patchwork-Delegate: shahafs@mellanox.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id DBCC529D6; Tue, 1 May 2018 11:59:08 +0200 (CEST) Received: from EUR02-AM5-obe.outbound.protection.outlook.com (mail-eopbgr00054.outbound.protection.outlook.com [40.107.0.54]) by dpdk.org (Postfix) with ESMTP id 3E3C029D6 for ; Tue, 1 May 2018 11:59:07 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Mellanox.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=j6inIRjAfHZoCgiGJ16oJ2LphuXiR7nJJ023enm92SU=; b=PWscQxMXqwt0YVom98OxYtn8cmvnFrwjZNZ+I5wnloogKL59T/1bB4XozgVjVPeHsPhlkz7zE6mn82O6s2XYAWymGG1p5KA0AFk6DD2skfIIb+sdMQ7wLMCz8A8sqshnpoRTPAcQKnSMxBj03LpY8xkyRNgUx871SodQtRpdYnk= Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=shahafs@mellanox.com; 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While the current API lacks the means for the PMD to provide the best possible value, providing the best default the PMD can guess. The values are based on Mellanox performance report and depends on the underlying NIC capabilities. Cc: erezsc@mellanox.com Cc: amira@mellanox.com Cc: olgas@mellanox.com Signed-off-by: Shahaf Shuler Acked-by: Nelio Laranjeiro --- On v2: - refactor the code to ease the maintenance. --- drivers/net/mlx5/mlx5_ethdev.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c index 588d4ba627..3fad199a60 100644 --- a/drivers/net/mlx5/mlx5_ethdev.c +++ b/drivers/net/mlx5/mlx5_ethdev.c @@ -417,6 +417,45 @@ mlx5_dev_configure(struct rte_eth_dev *dev) } /** + * Sets default tuning parameters. + * + * @param dev + * Pointer to Ethernet device. + * @param[out] info + * Info structure output buffer. + */ +static void +mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) +{ + struct priv *priv = dev->data->dev_private; + + /* Minimum CPU utilization. */ + info->default_rxportconf.ring_size = 256; + info->default_txportconf.ring_size = 256; + info->default_rxportconf.burst_size = 64; + info->default_txportconf.burst_size = 64; + if (priv->link_speed_capa & ETH_LINK_SPEED_100G) { + info->default_rxportconf.nb_queues = 16; + info->default_txportconf.nb_queues = 16; + if (dev->data->nb_rx_queues > 2 || + dev->data->nb_tx_queues > 2) { + /* Max Throughput. */ + info->default_rxportconf.ring_size = 2048; + info->default_txportconf.ring_size = 2048; + } + } else { + info->default_rxportconf.nb_queues = 8; + info->default_txportconf.nb_queues = 8; + if (dev->data->nb_rx_queues > 2 || + dev->data->nb_tx_queues > 2) { + /* Max Throughput. */ + info->default_rxportconf.ring_size = 4096; + info->default_txportconf.ring_size = 4096; + } + } +} + +/** * DPDK callback to get information about the device. * * @param dev @@ -458,6 +497,7 @@ mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) info->hash_key_size = rss_hash_default_key_len; info->speed_capa = priv->link_speed_capa; info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK; + mlx5_set_default_params(dev, info); } /**