From patchwork Mon Jan 25 17:08:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Chulski X-Patchwork-Id: 12043845 X-Patchwork-Delegate: kuba@kernel.org 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,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 DC751C433DB for ; Mon, 25 Jan 2021 17:47:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A3CC22D50 for ; Mon, 25 Jan 2021 17:47:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729763AbhAYROF (ORCPT ); Mon, 25 Jan 2021 12:14:05 -0500 Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]:49116 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730566AbhAYRNG (ORCPT ); Mon, 25 Jan 2021 12:13:06 -0500 Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 10PGpMBF017885; Mon, 25 Jan 2021 09:10:20 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=pfpt0220; bh=km1SSvkjcFlecBnfqs0aQMqb68jUv/dgma5LuQzQjKM=; b=PMT0V927lFLK0MoTpBS0FjqgwOhxB5GeaRWj1a/d+d/XUCUdXYB9nn9XAiR/f/Htzbls gIe93bDjT+LyXAxtEd8F0TeIaoXl9Njukn3rcwJ+WLsximf/Jh0nXjlF2r5R3Obzm0nc DSgHNDX2084cTh987gqNqyJpA9JUJpWDmw9lr5+FaWbbeH4FCy3yPrOneEbUF9CNY+yo DSuys+q0uU/wucq68QDuLzFfiZEOtFB+4TVap8mhG8tRxpJXKQ5/VShXUilQsvnJFeav CDKLzKZsjBvakbz2OxKo2QO7Mwai4gZbe409MqqFM/x4OZ0ulT4zMGH6YkCoutb4bS2R uw== Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0a-0016f401.pphosted.com with ESMTP id 368j1u5ajm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Mon, 25 Jan 2021 09:10:20 -0800 Received: from SC-EXCH02.marvell.com (10.93.176.82) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 25 Jan 2021 09:10:19 -0800 Received: from DC5-EXCH01.marvell.com (10.69.176.38) by SC-EXCH02.marvell.com (10.93.176.82) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 25 Jan 2021 09:10:18 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 25 Jan 2021 09:10:18 -0800 Received: from stefan-pc.marvell.com (stefan-pc.marvell.com [10.5.25.21]) by maili.marvell.com (Postfix) with ESMTP id C19FB3F7040; Mon, 25 Jan 2021 09:10:15 -0800 (PST) From: To: CC: , , , , , , , , , , , Subject: [PATCH v3 RFC net-next 18/19] net: mvpp2: limit minimum ring size to 1024 descriptors Date: Mon, 25 Jan 2021 19:08:05 +0200 Message-ID: <1611594486-29431-19-git-send-email-stefanc@marvell.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1611594486-29431-1-git-send-email-stefanc@marvell.com> References: <1611594486-29431-1-git-send-email-stefanc@marvell.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343,18.0.737 definitions=2021-01-25_07:2021-01-25,2021-01-25 signatures=0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC From: Stefan Chulski To support Flow Control ring size should be at least 1024 descriptors. Signed-off-by: Stefan Chulski --- drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c index 55138c7..bb7dfed 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -4545,6 +4545,8 @@ static int mvpp2_check_ringparam_valid(struct net_device *dev, if (ring->rx_pending > MVPP2_MAX_RXD_MAX) new_rx_pending = MVPP2_MAX_RXD_MAX; + else if (ring->rx_pending < MSS_THRESHOLD_START) + new_rx_pending = MSS_THRESHOLD_START; else if (!IS_ALIGNED(ring->rx_pending, 16)) new_rx_pending = ALIGN(ring->rx_pending, 16);