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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2461AC433FE for ; Thu, 24 Nov 2022 10:15:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230019AbiKXKPc (ORCPT ); Thu, 24 Nov 2022 05:15:32 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58090 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229649AbiKXKPO (ORCPT ); Thu, 24 Nov 2022 05:15:14 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50955C4940 for ; Thu, 24 Nov 2022 02:15:13 -0800 (PST) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oy9G4-0004Ic-1x; Thu, 24 Nov 2022 11:15:04 +0100 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1oy9G0-0000jR-AR; Thu, 24 Nov 2022 11:15:01 +0100 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1oy9Fz-00E4Wy-N5; Thu, 24 Nov 2022 11:14:59 +0100 From: Oleksij Rempel To: Woojung Huh , UNGLinuxDriver@microchip.com, Andrew Lunn , Vivien Didelot , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Arun.Ramadoss@microchip.com Subject: [PATCH net-next v6 5/6] net: dsa: microchip: enable MTU normalization for KSZ8795 and KSZ9477 compatible switches Date: Thu, 24 Nov 2022 11:14:57 +0100 Message-Id: <20221124101458.3353902-6-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221124101458.3353902-1-o.rempel@pengutronix.de> References: <20221124101458.3353902-1-o.rempel@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org KSZ8795 and KSZ9477 compatible series of switches use global max frame size configuration register. So, enable MTU normalization for this reason. Signed-off-by: Oleksij Rempel --- drivers/net/dsa/microchip/ksz8795.c | 2 ++ drivers/net/dsa/microchip/ksz9477.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c index d01bfd609130..060e41b9b6ef 100644 --- a/drivers/net/dsa/microchip/ksz8795.c +++ b/drivers/net/dsa/microchip/ksz8795.c @@ -1357,6 +1357,8 @@ int ksz8_setup(struct dsa_switch *ds) struct ksz_device *dev = ds->priv; int i; + ds->mtu_enforcement_ingress = true; + ksz_cfg(dev, S_REPLACE_VID_CTRL, SW_FLOW_CTRL, true); /* Enable automatic fast aging when link changed detected. */ diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index f6e7968ab105..47b54ecf2c6f 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -1134,6 +1134,8 @@ int ksz9477_setup(struct dsa_switch *ds) struct ksz_device *dev = ds->priv; int ret = 0; + ds->mtu_enforcement_ingress = true; + /* Required for port partitioning. */ ksz9477_cfg32(dev, REG_SW_QM_CTRL__4, UNICAST_VLAN_BOUNDARY, true); -- 2.30.2