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 4CDCCC4332F for ; Thu, 9 Sep 2021 12:06:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3601A60FE3 for ; Thu, 9 Sep 2021 12:06:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242024AbhIIMIE (ORCPT ); Thu, 9 Sep 2021 08:08:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:42148 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242042AbhIIMA1 (ORCPT ); Thu, 9 Sep 2021 08:00:27 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 001CE6139D; Thu, 9 Sep 2021 11:46:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1631187975; bh=20N7xoLr4PRRg/0ghZb/xVzS0Tot4rz49UzpNxcUcFM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SkDm0y1R27GgzYhDVI73PagX4SE2HY7ONgOsDVqucw3MEMcdVf5nf8F7uuLlbYl3r WQ7P5cYvbSNF+YgQ1FjfVCEwVjmwVqAt0mtpDhHLdLpi2c5mG5/LWCuuuvpDi7FsvT fGu/2qdL0Rz2yirfcDnQ6f2wk0uRSI5Mg3vvXKrp7si4zjthVGLIl4rp8Bey0azBKw 3id3Vq0PnsZz1mPvjox52PsTSiLdeWl3j9nPNjdMFMXnUP+RZeeE200RjVslNYPD4+ aBnzNrWp36bfEzX7n1ZfmatfeGWdZph3JXyaRiPOgITBVBplN75dK9nLxYArgd6qSx 9feSEHJxubdsg== 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 5.14 238/252] net/mlx5: DR, Enable QP retransmission Date: Thu, 9 Sep 2021 07:40:52 -0400 Message-Id: <20210909114106.141462-238-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210909114106.141462-1-sashal@kernel.org> References: <20210909114106.141462-1-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