Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp4790806yba; Wed, 10 Apr 2019 05:08:36 -0700 (PDT) X-Google-Smtp-Source: APXvYqwCbsl4B8ZU9kRqf6ejlyYtQUpYyOWiyB2AUUfcd0vFAi/Ax8v2r/sMdh4o08naO8UZfjqm X-Received: by 2002:a63:f707:: with SMTP id x7mr41057828pgh.343.1554898116844; Wed, 10 Apr 2019 05:08:36 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1554898116; cv=none; d=google.com; s=arc-20160816; b=ILlGj6xRvSr5Pp53+espJLLUs3FTwtMl7H5FlRbVN57w3cIdNxna+rLIKJ9pA7ziAX uCocYanTC+lQy5G27EqnUv183pHcOzoiYycNFCfkrfi5LxPH97cTbAzj9WtzAkWROBwT e09d3BxehHoEQmDAj+AgqIUek611ISuJHeLUtKF9vfkky82UIYgfYyHWCCTKkbPt6b0B fLNmdC3WyTmR4w5uGaFZ98qe+gQSshp/37ZSKv3SavNSAAPxKQUYXsF4S56UV8fhEvi1 WIb5YS4LW4SajfyBu5qg5FXp5aOy0Fvd1psVn4tLfW9D4PnOvnY2DcLFSfXsNNSqJMTs FRLQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-transfer-encoding :content-language:accept-language:in-reply-to:references:message-id :date:thread-index:thread-topic:subject:cc:to:from:dkim-signature; bh=ThJ01jct1k9iNxpf6TgizWCfHx7DsY3NoNQvIxw8a40=; b=syg54R+F/EV83XoAsq5cPA42Nb3hlxWtw2R7Z4s0BzMSj8BRCgxuqFcOTAD/Nr/wss A6SpRuswUtFIIgSZW4L2LBeqCm7mcwZ4Z6ggo/QVd2pus4RAw7dCwwJijcQXk+7MmM+o PJyvaiA4AKcqe+wCJNvzn2v9bdwBpGPaEtSE1NlmUr9Zc8eE9i0f314XhQMKnTdwWK5X o5ocoIxKh16TdcOH02Z4+YhK86pc2EAB6C8V8zGcbMJJ+CHnaLW3+7E3lNT2t/1syA/7 G4FqpTuteZpN+mDPAgc962b3PIm8c7p/8qtBRnYpkss9dWAqo7HQ2J9bBxe/X1/xeJPg Pr6A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@Mellanox.com header.s=selector1 header.b=mmEcHVE3; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=mellanox.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id d6si32185325pfg.66.2019.04.10.05.08.20; Wed, 10 Apr 2019 05:08:36 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@Mellanox.com header.s=selector1 header.b=mmEcHVE3; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=mellanox.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730560AbfDJKeX (ORCPT + 99 others); Wed, 10 Apr 2019 06:34:23 -0400 Received: from mail-eopbgr130048.outbound.protection.outlook.com ([40.107.13.48]:28390 "EHLO EUR01-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726799AbfDJKeX (ORCPT ); Wed, 10 Apr 2019 06:34:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Mellanox.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=ThJ01jct1k9iNxpf6TgizWCfHx7DsY3NoNQvIxw8a40=; b=mmEcHVE3ur+cDxDPjtIvrUUVDek1cc+YhyiMHR6Y4IMGjhSTQ9G1PmniSw3ZBVBffENeU5JQXeA9NTxRURPUYiwwrHiPBdFwi6cil7vP0x126cmyCo83+0IR2YespKOjybkXAnzUxPYey28Y/DQMjELYcdWA41mqhYHQETl2sQE= Received: from AM6PR05MB6133.eurprd05.prod.outlook.com (20.179.3.144) by AM6PR05MB4136.eurprd05.prod.outlook.com (52.135.160.156) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1771.21; Wed, 10 Apr 2019 10:34:18 +0000 Received: from AM6PR05MB6133.eurprd05.prod.outlook.com ([fe80::b43b:8a06:4870:82cc]) by AM6PR05MB6133.eurprd05.prod.outlook.com ([fe80::b43b:8a06:4870:82cc%2]) with mapi id 15.20.1771.011; Wed, 10 Apr 2019 10:34:17 +0000 From: Petr Machata To: Stephen Hemminger CC: Huang Rui , "davem@davemloft.net" , "ast@kernel.org" , "daniel@iogearbox.net" , "jakub.kicinski@netronome.com" , "hawk@kernel.org" , "john.fastabend@gmail.com" , "kafai@fb.com" , "songliubraving@fb.com" , "yhs@fb.com" , Jiri Pirko , "ecree@solarflare.com" , Ido Schimmel , "alexander.h.duyck@intel.com" , "amritha.nambiar@intel.com" , Li Rongqing , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "xdp-newbies@vger.kernel.org" , "bpf@vger.kernel.org" , "roopa@cumulusnetworks.com" , "nikolay@cumulusnetworks.com" , "bridge@lists.linux-foundation.org" Subject: Re: [PATCH] net:bridge:always disable auto-tuning when the user specified MTU Thread-Topic: [PATCH] net:bridge:always disable auto-tuning when the user specified MTU Thread-Index: AQHU70Wdg8ZylmIMz02uBxr+ZWpYCKY0rpyAgACEtgA= Date: Wed, 10 Apr 2019 10:34:17 +0000 Message-ID: <87y34ijgil.fsf@mellanox.com> References: <20190410023208.25435-1-huangruiPPP@gmail.com> <20190409193911.2d68a64d@shemminger-XPS-13-9360> In-Reply-To: <20190409193911.2d68a64d@shemminger-XPS-13-9360> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: AM6P191CA0040.EURP191.PROD.OUTLOOK.COM (2603:10a6:209:7f::17) To AM6PR05MB6133.eurprd05.prod.outlook.com (2603:10a6:20b:af::16) authentication-results: spf=none (sender IP is ) smtp.mailfrom=petrm@mellanox.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [78.45.160.211] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 4add7463-6901-41da-1eb9-08d6bda0158e x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600139)(711020)(4605104)(4618075)(2017052603328)(7193020);SRVR:AM6PR05MB4136; x-ms-traffictypediagnostic: AM6PR05MB4136: x-ld-processed: a652971c-7d2e-4d9b-a6a4-d149256f461b,ExtAddr x-microsoft-antispam-prvs: x-forefront-prvs: 00032065B2 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(376002)(396003)(346002)(39860400002)(136003)(366004)(189003)(199004)(2616005)(36756003)(476003)(256004)(5660300002)(11346002)(8676002)(6116002)(14444005)(478600001)(102836004)(316002)(106356001)(99286004)(486006)(446003)(4326008)(105586002)(229853002)(26005)(86362001)(76176011)(6506007)(305945005)(386003)(6246003)(71190400001)(52116002)(2906002)(6486002)(71200400001)(7416002)(6916009)(7736002)(68736007)(8936002)(54906003)(14454004)(25786009)(97736004)(3846002)(66066001)(81156014)(186003)(6436002)(81166006)(53936002)(6512007);DIR:OUT;SFP:1101;SCL:1;SRVR:AM6PR05MB4136;H:AM6PR05MB6133.eurprd05.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: mellanox.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: Ky9AvaQfnZNoTtgtBOPUNbqi3XyzsYzpdaT1dcuiQbZozwPPJjO/HhQHjkPv4/XMK8NWepH9r5hpxgWShBIB+qEl+8w/bXErVQB8Cqj0Yw/SazRWwwxcAUYQtqfpzVO92zew/EWs7O+IR7RIqCfLJFA9IM8LxCcEaQnSqwYU5WBm6ebpDfGyitiYh7B1UT10XnCl4PaRrxb28l0Km3qcGw26nsLO9bg4bJAGYT/Ne+tWBwlbXtHnEUzKzqBG4GgbO0nJpiOCP+FQ4rOr/LLDB2wVu9n5LTbAqeR23+ih8/gqWiP6cCditSmrwhONN428b6ClpDOJdC7WD/X2Ta93DJBeNKMgrpd3fnpILe39QNMZwRaZwKyoornwykuGeTx5AxnoiqT/FmufDfUMNR29SaJTrIRSljY2oKslVgHbk2g= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4add7463-6901-41da-1eb9-08d6bda0158e X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Apr 2019 10:34:17.7869 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR05MB4136 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org DQpTdGVwaGVuIEhlbW1pbmdlciA8c3RlcGhlbkBuZXR3b3JrcGx1bWJlci5vcmc+IHdyaXRlczoN Cg0KPiBPbiBXZWQsIDEwIEFwciAyMDE5IDAyOjMyOjA4ICswMDAwDQo+IEh1YW5nIFJ1aSA8aHVh bmdydWlwcHBAZ21haWwuY29tPiB3cm90ZToNCj4NCj4+IEZvciBleGFtcGxlLg0KPj4gTXkgcHVy cG9zZSBpcyB0byBjcmVhdGUgYSBicmlkZ2UgYnIwIGFuZCBqb2luIGV0aDAgaW50byBicjAuDQo+ PiBpZiB3ZSB1c2UgdGhpcyBmb2xsb3dpbmcgd2F5LCB0aGUgYXV0by10dW5pbmcgZmxhZyB3aWxs IG5vdCBiZSBkaXNhYmxlZC4NCj4+DQo+PiBJZiBldGgwJ3MgbXR1IGlzIDEyMDANCj4+IHN0ZXAg MS5icmN0bCBhZGRiciBicjANCj4+IHN0ZXAgMi5icmN0bCBhZGRpZiBicjAgZXRoMA0KPj4gc3Rl cCAzLmlmY29uZmlnIGJyMCBtdHUgMTIwMA0KPj4gc3RlcCA0LmlmY29uZmlnIGV0aDAgbXR1IDE1 MDANCj4+DQo+PiBSZXN1bHQ6DQo+PiBicjAncyBNVFU6IDE1MDAsIGV0aDAncyBNVFU6IDE1MDAN Cj4+DQo+PiBFeHBlY3RlZDoNCj4+IGJyMCdzIE1UVTogMTIwMCwgZXRoMCdzIE1UVTogMTUwMA0K Pj4NCj4+IEkgaGF2ZSBzcGVjaWZpZWQgYnIwJ3MgTVRVLCAgYnV0IGF1dG8tbWluIHBvbGljeSB3 b3Jrcy4gU28gdGhlIE1UVSBpcw0KPj4gbm90IHRoZSByZXN1bHQgd2hhdCB3ZSBleHBlY3RlZC4N Cj4+IEFzIGV4cGVjdGVkLCBpZiBpIGhhdmUgc3BlY2lmaWVkIGJyaWRnZSdzIE1UVSwgaXQgd2ls bCBzZXQgdGhlIGZsYWc6DQo+PiBCUk9QVF9NVFVfU0VUX0JZX1VTRVIgaW4gbmV0X2JyaWRnZV9v cHRzIGRpc2FibGVkIGFuZCBhdXRvLW1pbi9tYXgNCj4+IHBvbGljeSB3aWxsIG5vdCB3b3JrLkJ1 dCBpbiB0aGlzIGNhc2UsIGJlY2F1c2UgdGhlIGRldl9zZXRfbXR1IHJldHVybg0KPj4gZWFybHks IHRoZSBCUk9QVF9NVFVfU0VUX0JZX1VTRVIgZmxhZyB3aWxsIG5vdCBiZSBkaXNhYmxlZCBhbmQN Cj4+IGF1dG8tbWluL21heCBwb2xpY3kgd2lsbCBzdGlsbCB3b3JrLg0KPj4NCj4+IFNpZ25lZC1v ZmYtYnk6IEh1YW5nIFJ1aSA8aHVhbmdydWlQUFBAZ21haWwuY29tPg0KPg0KPiBBIGJyaWRnZSBs aWtlIHRoaXMgZ29pbmcgdG8gZHJvcCBmcmFtZXMuDQo+IEEgZnJhbWUgcmVjZWl2ZWQgd2l0aCBN VFUgb2YgMTIwMCB3aWxsIGdldCBkcm9wcGVkLg0KDQpUaGF0J3MgdHJ1ZSBldmVuIGlmIGFib3Zl IHlvdSBzZXQgYnIwJ3MgTVRVIHRvIDEyMDEsIGJ1dCB0aGVuIHRoZQ0KYXV0by10dW5pbmcgaXMg ZGlzYWJsZWQgYXMgZXhwZWN0ZWQuIFRoZSBwcm9ibGVtIGlzIHRoYXQgc2V0dGluZyBNVFUgdG8N CjEyMDAgaXMgcGVyY2VpdmVkIGFzIGEgbm9uLWNoYW5nZSwgd2hlcmVhcyBpdCBzaG91bGQgaW5z dGVhZCBiZQ0KcGVyY2VpdmVkIGFzIGEgc2lnbmFsIHRoYXQgdGhlIHVzZXIgdGFrZXMgb3ZlciB0 aGUgTVRVIG1hbmFnZW1lbnQuDQoNCj4gVGhlIHByb3BlciB3YXkgdG8gZG8gdGhpcyBpcyB0byBj aGFuZ2UgTVRVIG9mIGJvdGggaW50ZXJmYWNlcyB0byBtYXRjaC4NCg==