From patchwork Thu Jul 9 19:48:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 11655065 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C4B2260D for ; Thu, 9 Jul 2020 20:17:02 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9A9AB20720 for ; Thu, 9 Jul 2020 20:17:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="DZm0go9Q"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="BwWn/Xnh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9A9AB20720 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=public-files.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Date:Subject:To:From: Message-ID:MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rR3LnJ4eRWTZ1GFYNHWAKixzWDHeJ39g5Lg8uRyN8lo=; b=DZm0go9Q1UPohetZUEyLJjXQB T94wbXrJ1NGtB2OaKNfh9eoVRWdF99HnlmCr12Voz2LcL1kcfMI4tyGIDqB/9Lschn3URb+wNZdaX eE8qaiBKw9ot9PnLyYlPuTXC9IVRmT0rFsgFl8ryGyi/KG1hl/qoYEH/okvwQB2wG8u4ExiQ8isNw 2b1uV2dyh+iVSd5OIcYgXjRG4UAvO4zhCr3fo+lWiiNuEwUapqBE+1/GOrCx1AlnUfQJzMUmmxjIj MqISM+HfTXsfTCtPYR0pZurJ+zStkBQsS3DHHWbU/Ht6uXLMNwDpDtlstW24sCguDhJqK9R13Z/bF hXFTH4dTA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jtcxF-0004rC-SM; Thu, 09 Jul 2020 20:15:37 +0000 Received: from mout.gmx.net ([212.227.17.21]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jtcxC-0004pq-1T; Thu, 09 Jul 2020 20:15:35 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1594325727; bh=qjjKU85vWrmvdFue2XV3Qb2IIMAX9y66v6AoZZPoc2M=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=BwWn/XnhI2e7GoWIhW5k/9m566TlB7ALaOPJBr+6TojU7MTG4iw4LpmN+W4xdVvmW gcqwPRg33mJZeBN7BFB/gZfsTwLkfFN5GieRtINFJVm5AieZcryABdfIg0fVhsqw1q Ale42Ysxb7vKCn6iww7D4Bmf78gWdFApVmDzpf78= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [80.208.213.58] ([80.208.213.58]) by web-mail.gmx.net (3c-app-gmx-bap65.server.lan [172.19.172.65]) (via HTTP); Thu, 9 Jul 2020 21:48:01 +0200 MIME-Version: 1.0 Message-ID: From: Frank Wunderlich To: Andrew Lunn Subject: Aw: Re: [PATCH v2] net: ethernet: mtk_eth_soc: fix mtu warning Date: Thu, 9 Jul 2020 21:48:01 +0200 Importance: normal Sensitivity: Normal In-Reply-To: <20200709134115.GK928075@lunn.ch> References: <20200709055742.3425-1-frank-w@public-files.de> <20200709134115.GK928075@lunn.ch> X-UI-Message-Type: mail X-Priority: 3 X-Provags-ID: V03:K1:n4zQntLiWUydrYDQKBFrQyQq/zGUb616R6yRiuIW4EkJfjq+54nieuV/hYKY/1qyo45o+ T2AV17jN910J1AYgwwgjqWXNF94zV6gLBYMT9Hl4WOnfgtJTvXNzcnqT/xY+bj7KTOvcfPBe2qLH iufWNu521oC6dI9gX0kLgb9Ft7IHy4L3NXJ8+w0rSZudmHd/G3VMlJ4H2z+UG2OBzWIm2Q5L2Glg rZbzX/ZP8wO9W5+MuBod2H8YjmwO4CiGt4uOWYEiWOSID3DQ8+IH6TSyRDTaIzL/nUQZcmB2n/mo BQ= X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:NfrO6qilQeM=:Ia9JJnIoEUdVh0NMjKHicv y+NYO7ihJOsnj0dOvVY1KJGVNTjNa05Fc5RlM7nS7CdivIjn8D+VEgYYgwqL8r6c0+VmjZxSd ZOfBYg2kuzEiQImyMrRVi7bf9p73Wtsfu9UB8jmJzOHL54uFU65K5T/1opPCns3RwQPh4DXuQ ezQ7jg57oZTiWwI/crjxR7o9h4XKVElooz3Qu1E/WZpGfXrCv9J8lGnsqGyJ+EfIsxNYXDP2u UlxPUaGmylNPK1KhoilDBkHzvs61VA9YxTN0xttGX3ynnblAGTLheN4bYz5c+4XQGf0NclKWH dOVkAnEjbnqvY0ruJ0HP6qAZirTwc/IaDdowhXzEgVLgMN2hTAJ5MKq/b95wfSdV5k18QKM91 L8vuWz89UsUx2RXmed2SJQ2UG1BnCiiTGLYrUv9KibIKYY87czk5YS9d7E28mimNhlBoi5vy4 4fHMhf8uLO8thJsSSiAM6RtvGsjiqecRokA9TpdMds4B884QKpAfzsi+ro654hTIVFFNhMd1v akvIwAJ0/YzC6qhmf2E3oWK8TT2V3S0nDhQwYTxE4D7EC2dp3UEQRhguiIJqbfhawiiptPhp7 KA4e0YJTqnAgVwPC7EDyVIwAIEqS1JlYeS1/FiU7zZr3ZKQQgEg3APEEsT9hLkISpcQhd0/3u B2nQVVKZM4ALiC9cgMUBT+cZJW2WDUrNEJXvUeraWskoeb6TtqMRGOtgFh0KvCHyZy+k= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200709_161534_312739_BF13A292 X-CRM114-Status: GOOD ( 14.48 ) X-Spam-Score: -0.7 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [212.227.17.21 listed in list.dnswl.org] -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [212.227.17.21 listed in wl.mailspike.net] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Landen Chao , netdev@vger.kernel.org, Sean Wang , linux-kernel@vger.kernel.org, "David S. Miller" , =?utf-8?q?Ren=C3=A9_van_Dorst?= , linux-mediatek@lists.infradead.org, John Crispin , Matthias Brugger , Jakub Kicinski , Mark Lee , linux-arm-kernel@lists.infradead.org, Felix Fietkau Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org > Gesendet: Donnerstag, 09. Juli 2020 um 15:41 Uhr > Von: "Andrew Lunn" > > + eth->netdev[id]->max_mtu = 1536; > > I assume this is enough to make the DSA warning go away, but it is the > true max? I have a similar patch for the FEC driver which i should > post sometime. Reviewing the FEC code and after some testing, i found > the real max was 2K - 64. i tried setting only the max_mtu, but the dsa-error is still present mt7530 mdio-bus:00: nonfatal error -95 setting MTU on port 0 but i got it too, if i revert the change...mhm, strange that these were absent last time... the other 2 are fixed with only max_mtu. @andrew where did you got the 2k-64 (=1984) information? sounds like orwell ;) -95 is EOPNOTSUPP as so far, commit 72579e14a1d3d3d561039dfe7e5f47aaf22e3fd3 introduces the warning, but the change is making it non-fatal...so i need to adjust my fixes-tag. i guess the real problem lies in this: bfcb813203e6 net: dsa: configure the MTU for switch ports it looks like dsa_slave_change_mtu failes because of missing callback in mtk_driver (mt7530 for mt7531 in my case). net/dsa/slave.c 1405 static int dsa_slave_change_mtu(struct net_device *dev, int new_mtu) ... 1420 if (!ds->ops->port_change_mtu) 1421 return -EOPNOTSUPP; i added an empty callback to avoid this message, but mtu should be set in hardware too... here i will ne some assistance from mtk ethernet experts and mt7531 driver (from landen chao) to be merged first (after some needed changes) --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -2259,6 +2259,12 @@ mt753x_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val) return priv->info->phy_write(ds, port, regnum, val); } +static int +mt753x_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu) +{ + return 0; +} + static const struct dsa_switch_ops mt7530_switch_ops = { .get_tag_protocol = mtk_get_tag_protocol, .setup = mt753x_setup, @@ -2281,6 +2287,7 @@ static const struct dsa_switch_ops mt7530_switch_ops = { .port_vlan_del = mt7530_port_vlan_del, .port_mirror_add = mt7530_port_mirror_add, .port_mirror_del = mt7530_port_mirror_del, + .port_change_mtu = mt753x_port_change_mtu, .phylink_validate = mt753x_phylink_validate, .phylink_mac_link_state = mt7530_phylink_mac_link_state, .phylink_mac_config = mt753x_phylink_mac_config,