From mboxrd@z Thu Jan 1 00:00:00 1970 From: Remy Horton Subject: [PATCH v2 2/4] net/e1000: add TxRx tuning parameters Date: Wed, 21 Mar 2018 14:27:47 +0000 Message-ID: <20180321142749.27520-3-remy.horton@intel.com> References: <20180321142749.27520-1-remy.horton@intel.com> Cc: John McNamara , Wenzhuo Lu , Jingjing Wu , Qi Zhang , Beilei Xing , Shreyansh Jain , Thomas Monjalon To: dev@dpdk.org Return-path: Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 63615728E for ; Wed, 21 Mar 2018 15:27:55 +0100 (CET) In-Reply-To: <20180321142749.27520-1-remy.horton@intel.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The optimal values of several transmission & reception related parameters, such as burst sizes, descriptor ring sizes, and number of queues, varies between different network interface devices. This patch allows individual PMDs to specify preferred parameter values. Signed-off-by: Remy Horton --- drivers/net/e1000/em_ethdev.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c index 242375f..c715065 100644 --- a/drivers/net/e1000/em_ethdev.c +++ b/drivers/net/e1000/em_ethdev.c @@ -1152,6 +1152,12 @@ eth_em_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) dev_info->speed_capa = ETH_LINK_SPEED_10M_HD | ETH_LINK_SPEED_10M | ETH_LINK_SPEED_100M_HD | ETH_LINK_SPEED_100M | ETH_LINK_SPEED_1G; + + /* Preferred queue parameters */ + dev_info->default_rxportconf.nb_queues = 1; + dev_info->default_txportconf.nb_queues = 1; + dev_info->default_txportconf.ring_size = 256; + dev_info->default_rxportconf.ring_size = 256; } /* return 0 means link status changed, -1 means not changed */ -- 2.9.5