From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:46696 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932131AbeDJWkS (ORCPT ); Tue, 10 Apr 2018 18:40:18 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Roi Dayan , Paul Blakey , Or Gerlitz , Saeed Mahameed Subject: [PATCH 4.14 133/138] net/mlx5e: Fix traffic being dropped on VF representor Date: Wed, 11 Apr 2018 00:25:23 +0200 Message-Id: <20180410212917.702855218@linuxfoundation.org> In-Reply-To: <20180410212902.121524696@linuxfoundation.org> References: <20180410212902.121524696@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Roi Dayan [ Upstream commit 4246f698dd58e3c6246fa919ef0b0a1d29a57e4a ] Increase representor netdev RQ size to avoid dropped packets. The current size (two) is just too small to keep up with conventional slow path traffic patterns. Also match the SQ size to the RQ size. Fixes: cb67b832921c ("net/mlx5e: Introduce SRIOV VF representors") Signed-off-by: Roi Dayan Reviewed-by: Paul Blakey Reviewed-by: Or Gerlitz Signed-off-by: Saeed Mahameed Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c @@ -43,6 +43,11 @@ #include "en_tc.h" #include "fs_core.h" +#define MLX5E_REP_PARAMS_LOG_SQ_SIZE \ + max(0x6, MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE) +#define MLX5E_REP_PARAMS_LOG_RQ_SIZE \ + max(0x6, MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE) + static const char mlx5e_rep_driver_name[] = "mlx5e_rep"; static void mlx5e_rep_get_drvinfo(struct net_device *dev, @@ -798,9 +803,9 @@ static void mlx5e_build_rep_params(struc MLX5_CQ_PERIOD_MODE_START_FROM_CQE : MLX5_CQ_PERIOD_MODE_START_FROM_EQE; - params->log_sq_size = MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE; + params->log_sq_size = MLX5E_REP_PARAMS_LOG_SQ_SIZE; params->rq_wq_type = MLX5_WQ_TYPE_LINKED_LIST; - params->log_rq_size = MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE; + params->log_rq_size = MLX5E_REP_PARAMS_LOG_RQ_SIZE; params->rx_am_enabled = MLX5_CAP_GEN(mdev, cq_moderation); mlx5e_set_rx_cq_mode_params(params, cq_period_mode);