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=-19.1 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 8E15BC4321E for ; Thu, 16 Sep 2021 17:51:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 830DF60EE3 for ; Thu, 16 Sep 2021 17:51:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356330AbhIPRtj (ORCPT ); Thu, 16 Sep 2021 13:49:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:57084 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355394AbhIPRl0 (ORCPT ); Thu, 16 Sep 2021 13:41:26 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id CE94B63260; Thu, 16 Sep 2021 16:52:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1631811170; bh=20N7xoLr4PRRg/0ghZb/xVzS0Tot4rz49UzpNxcUcFM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NLkwgZDFiOpTpoUQ+I0z7hSz7NXo6Bkzt9TiZMBQo/3jJ16hEGZMWvmVwZyFa25NK ZouXuVk4AWhyZwqoyQJWZRG/oM47oWuo0QEopwI2da8VJbZMB7nvh2nBvKyIBAErcX RFiGojqea9zFifSm6Rhu3wMdCVCM4ODm2kindu1w= 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 5.14 376/432] net/mlx5: DR, Enable QP retransmission Date: Thu, 16 Sep 2021 18:02:05 +0200 Message-Id: <20210916155823.554406532@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210916155810.813340753@linuxfoundation.org> References: <20210916155810.813340753@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 9df0e73d1c35..69b49deb66b2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c @@ -620,6 +620,7 @@ static int dr_cmd_modify_qp_rtr2rts(struct mlx5_core_dev *mdev, 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 */ MLX5_SET(rtr2rts_qp_in, in, opcode, MLX5_CMD_OP_RTR2RTS_QP); MLX5_SET(rtr2rts_qp_in, in, qpn, dr_qp->qpn); -- 2.30.2