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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 2BCA1C433F5 for ; Thu, 9 Sep 2021 12:27:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0CB9C61132 for ; Thu, 9 Sep 2021 12:27:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352141AbhIIM2S (ORCPT ); Thu, 9 Sep 2021 08:28:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:33230 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352839AbhIIMWt (ORCPT ); Thu, 9 Sep 2021 08:22:49 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8E24861AF7; Thu, 9 Sep 2021 11:51:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1631188265; bh=20N7xoLr4PRRg/0ghZb/xVzS0Tot4rz49UzpNxcUcFM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=N5Z/AO4e58/lN35L6nUnuSLZlqVV2b4sK5NmG9qv+HFraMZce2RpYWZC4c3q3E07g 1VhQ4Z54GbHcQrrx68spJavW9NlmOmKm3XnAqCmRBwoNn2N/HP6VoYdE18Z7p86Zky C9irFtKf7T5Es7yeFhUNBnBgCz8glZuo3eaPgAVPJQYsJcKlTne81F7qlMWkQp3Xdp nwNY6tosJRam/YqmsFstSPSCtEpgcZL68i2kElnIfvBBR28oNiUKgowikdc3lnYCg1 QhEzw1z+X2ZWoIUoE9XqU7hET1OkeEi24o1TNYRmN8gWWz6gNm4HSsnzJxbXbYQdHA W/05nALv/zY+Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yevgeny Kliteynik , Alex Vesker , Saeed Mahameed , Sasha Levin , netdev@vger.kernel.org, linux-rdma@vger.kernel.org Subject: [PATCH AUTOSEL 5.13 210/219] net/mlx5: DR, Enable QP retransmission Date: Thu, 9 Sep 2021 07:46:26 -0400 Message-Id: <20210909114635.143983-210-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210909114635.143983-1-sashal@kernel.org> References: <20210909114635.143983-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-rdma@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