From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-20.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4F999C433EF for ; Mon, 20 Sep 2021 18:17:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3484461A55 for ; Mon, 20 Sep 2021 18:17:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377405AbhITSSk (ORCPT ); Mon, 20 Sep 2021 14:18:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:36231 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376522AbhITSMt (ORCPT ); Mon, 20 Sep 2021 14:12:49 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id CC9F7613E6; Mon, 20 Sep 2021 17:20:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1632158460; bh=7X5tW0vkiweF1UonXwW8M/dDVIrWkufNyhzFGEKT+iU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a6xjcHRUjDDiZGsDxIw9RgLpsEjKj0yf3E0aMBpRLAfiXXAlINOXFkKvRqGkE71kq 6fYmA3/iNjrEnhZPx6hJ7sXH3stQhEg+sGknqacR5gH9VRCplO8aJ6P7mQQ2xjp5Bg MILCp6aE4HNjYSda78mg8sbO5Rae7TYcG0sk3vFs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Yevgeny Kliteynik , Alex Vesker , Saeed Mahameed , Sasha Levin Subject: [PATCH 5.4 167/260] net/mlx5: DR, Enable QP retransmission Date: Mon, 20 Sep 2021 18:43:05 +0200 Message-Id: <20210920163936.764495036@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210920163931.123590023@linuxfoundation.org> References: <20210920163931.123590023@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yevgeny Kliteynik [ Upstream commit ec449ed8230cd30769de3cb70ee0fce293047372 ] Under high stress, SW steering might get stuck on polling for completion that never comes. For such cases QP needs to have protocol retransmission mechanism enabled. Currently the retransmission timeout is defined as 0 (unlimited). Fix this by defining a real timeout. Signed-off-by: Yevgeny Kliteynik Reviewed-by: Alex Vesker Signed-off-by: Saeed Mahameed Signed-off-by: Sasha Levin --- drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c index f012aac83b10..401564b94eb1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c @@ -603,6 +603,7 @@ static int dr_cmd_modify_qp_rtr2rts(struct mlx5_core_dev *mdev, MLX5_SET(qpc, qpc, log_ack_req_freq, 0); MLX5_SET(qpc, qpc, retry_count, attr->retry_cnt); MLX5_SET(qpc, qpc, rnr_retry, attr->rnr_retry); + MLX5_SET(qpc, qpc, primary_address_path.ack_timeout, 0x8); /* ~1ms */ return mlx5_core_qp_modify(mdev, MLX5_CMD_OP_RTR2RTS_QP, 0, qpc, &dr_qp->mqp); -- 2.30.2