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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 86C0DC4332F for ; Mon, 25 Oct 2021 19:35:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 761D061152 for ; Mon, 25 Oct 2021 19:35:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235619AbhJYTiC (ORCPT ); Mon, 25 Oct 2021 15:38:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:53278 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236720AbhJYTfI (ORCPT ); Mon, 25 Oct 2021 15:35:08 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7A8246108C; Mon, 25 Oct 2021 19:32:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1635190346; bh=8rzeqkYyRGngJ0odVsd2BXJ7YP/tIlYXNlf1UGg8N0E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fTsEk8em5diht9/FP/T2DJ4WnlsMre5fG41iotOcltTDTP09+OkcxJ7m+VXodNaj4 GpYfr6in101QNebRTPokGhWYRN0A/sscZ3u3hBCeZDQsTXQ8yf95n8dnAwY8Ui1Qsb oIbQ419U+UfNcH5fc2wapCuCrRBjxvXfudfSy6nQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Guangbin Huang , "David S. Miller" , Sasha Levin Subject: [PATCH 5.10 24/95] net: hns3: reset DWRR of unused tc to zero Date: Mon, 25 Oct 2021 21:14:21 +0200 Message-Id: <20211025191000.412773963@linuxfoundation.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211025190956.374447057@linuxfoundation.org> References: <20211025190956.374447057@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: stable@vger.kernel.org From: Guangbin Huang [ Upstream commit b63fcaab959807282e9822e659034edf95fc8bd1 ] Currently, DWRR of tc will be initialized to a fixed value when this tc is enabled, but it is not been reset to 0 when this tc is disabled. It cause a problem that the DWRR of unused tc is not 0 after using tc tool to add and delete multi-tc parameters. For examples, after enabling 4 TCs and restoring to 1 TC by follow tc commands: $ tc qdisc add dev eth0 root mqprio num_tc 4 map 0 1 2 3 0 1 2 3 queues \ 8@0 8@8 8@16 8@24 hw 1 mode channel $ tc qdisc del dev eth0 root Now there is just one TC is enabled for eth0, but the tc info querying by debugfs is shown as follow: $ cat /mnt/hns3/0000:7d:00.0/tm/tc_sch_info enabled tc number: 1 weight_offset: 14 TC MODE WEIGHT 0 dwrr 100 1 dwrr 100 2 dwrr 100 3 dwrr 100 4 dwrr 0 5 dwrr 0 6 dwrr 0 7 dwrr 0 This patch fixes it by resetting DWRR of tc to 0 when tc is disabled. Fixes: 848440544b41 ("net: hns3: Add support of TX Scheduler & Shaper to HNS3 driver") Signed-off-by: Guangbin Huang Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c index 69d081515c60..71aa6d16fc19 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c @@ -671,6 +671,8 @@ static void hclge_tm_pg_info_init(struct hclge_dev *hdev) hdev->tm_info.pg_info[i].tc_bit_map = hdev->hw_tc_map; for (k = 0; k < hdev->tm_info.num_tc; k++) hdev->tm_info.pg_info[i].tc_dwrr[k] = BW_PERCENT; + for (; k < HNAE3_MAX_TC; k++) + hdev->tm_info.pg_info[i].tc_dwrr[k] = 0; } } -- 2.33.0