From patchwork Wed Jan 22 09:29:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 233571 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 4CA46C33CAF for ; Wed, 22 Jan 2020 09:42:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 22A0F24691 for ; Wed, 22 Jan 2020 09:42:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579686124; bh=pLeUwWoGssYb3xBxY9l4C0o/DuV7/FRhpyqk7odZj1g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=y5vxFpJpc6muT5ANTSpteaLLNE0cqJgXjmORzs8+NIeiYru8KT29gRamp1jey/bZz ssYIV2/vD43LRZ/7Q0R1uU3xeOTuqNxqzIfPIPNq09RhK8PMfHRJ/gu9UcUo53o3ka jSO2eXJ7qr42pDkCKfz94VbG3Z/vOOwyOyt8RR0c= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387397AbgAVJmD (ORCPT ); Wed, 22 Jan 2020 04:42:03 -0500 Received: from mail.kernel.org ([198.145.29.99]:33606 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733131AbgAVJmC (ORCPT ); Wed, 22 Jan 2020 04:42:02 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2C5A624680; Wed, 22 Jan 2020 09:42:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579686121; bh=pLeUwWoGssYb3xBxY9l4C0o/DuV7/FRhpyqk7odZj1g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aiI099Hq7iOZ0peU6skrsoki96pgyMu0T6umUGx/6+FYy1ci72pEyRX6ie66T9JBG a4fS8ekwuaOyUirocTx++36pKSyU6n1I4S51LZBoQLgyxCoAWFL372+e0re11IrFhZ jghPFz5MbWYgaqkwDZ51I9gBSh+wYZy6qSU5TAbg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jose Abreu , "David S. Miller" Subject: [PATCH 4.19 051/103] net: stmmac: Enable 16KB buffer size Date: Wed, 22 Jan 2020 10:29:07 +0100 Message-Id: <20200122092811.413972310@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200122092803.587683021@linuxfoundation.org> References: <20200122092803.587683021@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jose Abreu commit b2f3a481c4cd62f78391b836b64c0a6e72b503d2 upstream. XGMAC supports maximum MTU that can go to 16KB. Lets add this check in the calculation of RX buffer size. Fixes: 7ac6653a085b ("stmmac: Move the STMicroelectronics driver") Signed-off-by: Jose Abreu Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -1082,7 +1082,9 @@ static int stmmac_set_bfsize(int mtu, in { int ret = bufsize; - if (mtu >= BUF_SIZE_4KiB) + if (mtu >= BUF_SIZE_8KiB) + ret = BUF_SIZE_16KiB; + else if (mtu >= BUF_SIZE_4KiB) ret = BUF_SIZE_8KiB; else if (mtu >= BUF_SIZE_2KiB) ret = BUF_SIZE_4KiB;