From patchwork Sun Jan 24 11:44:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Chulski X-Patchwork-Id: 12042265 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,USER_AGENT_GIT autolearn=ham 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 EC87DC433DB for ; Sun, 24 Jan 2021 11:50:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AF23A230FD for ; Sun, 24 Jan 2021 11:50:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726919AbhAXLuh (ORCPT ); Sun, 24 Jan 2021 06:50:37 -0500 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]:45058 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726821AbhAXLsa (ORCPT ); Sun, 24 Jan 2021 06:48:30 -0500 Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 10OBjJeQ026736; Sun, 24 Jan 2021 03:45:44 -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=tHSt70MDENyIZEIqeVmFDphcCzrLcjqhfuYrJqA+4Ts=; b=XVIeN9Txc9SJ3SkVASiCXpmvTFJpqS9rhsw/ZlOz9i5ECL4Oie7F9xeBX+F4nyNuGbmA pvVU5wUSc5wH7L2lwDhUSSIq8qXmh4/nk2+RXWHlqQjGte3n1Wa5a4Jn11d+vNbGljhJ YqzV7BEK1Xxb9UXyfRrsd5m6QRP4TfOQNcLBK44vwIfuWwKDBrjJLgTpIkfLWxOK+b2E iWrkU6yS4bJWImHqh96BaeUvgedTgTsh1mHPEjiTtsw6/Xw6lwbvdxrSfTApNKF3Gwu7 X5Ei7Xt6M5aczrDc8vIMra5PoOUN0KTtRzYRRlsPMAkohTd4D4QTIlp/s4gxbSaHQewy Xg== Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0b-0016f401.pphosted.com with ESMTP id 368m6u9suv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Sun, 24 Jan 2021 03:45:43 -0800 Received: from SC-EXCH01.marvell.com (10.93.176.81) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 24 Jan 2021 03:45:42 -0800 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by SC-EXCH01.marvell.com (10.93.176.81) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 24 Jan 2021 03:45:41 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sun, 24 Jan 2021 03:45:41 -0800 Received: from stefan-pc.marvell.com (stefan-pc.marvell.com [10.5.25.21]) by maili.marvell.com (Postfix) with ESMTP id 9F5C33F7041; Sun, 24 Jan 2021 03:45:38 -0800 (PST) From: To: CC: , , , , , , , , , , , Subject: [PATCH v2 RFC net-next 17/18] net: mvpp2: limit minimum ring size to 1024 descriptors Date: Sun, 24 Jan 2021 13:44:06 +0200 Message-ID: <1611488647-12478-18-git-send-email-stefanc@marvell.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1611488647-12478-1-git-send-email-stefanc@marvell.com> References: <1611488647-12478-1-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=2021-01-24_04:2021-01-22,2021-01-24 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 03a4b36..f8fc682 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -4544,6 +4544,8 @@ 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);