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 7FB62C433EF for ; Tue, 8 Mar 2022 22:12:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236873AbiCHWNJ (ORCPT ); Tue, 8 Mar 2022 17:13:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46132 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229902AbiCHWNI (ORCPT ); Tue, 8 Mar 2022 17:13:08 -0500 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id AB9C347AEA for ; Tue, 8 Mar 2022 14:12:10 -0800 (PST) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-168-2C-yBT7jNpqrOW2MLTuR3w-1; Tue, 08 Mar 2022 22:12:07 +0000 X-MC-Unique: 2C-yBT7jNpqrOW2MLTuR3w-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.28; Tue, 8 Mar 2022 22:12:06 +0000 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.028; Tue, 8 Mar 2022 22:12:06 +0000 From: David Laight To: 'Eric Dumazet' CC: Jakub Kicinski , netdev , "Willem de Bruijn" , Neal Cardwell , "Yuchung Cheng" Subject: RE: [RFC net-next] tcp: allow larger TSO to be built under overload Thread-Topic: [RFC net-next] tcp: allow larger TSO to be built under overload Thread-Index: AQHYMp+lvVxMhB3eHk2yhoJYjvGf7ay1MbUwgAC1cwCAAB4g0A== Date: Tue, 8 Mar 2022 22:12:06 +0000 Message-ID: <218fd4946208411b90ac77cfcf7aa643@AcuMS.aculab.com> References: <20220308030348.258934-1-kuba@kernel.org> <652afb8e99a34afc86bd4d850c1338e5@AcuMS.aculab.com> In-Reply-To: Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org RnJvbTogRXJpYyBEdW1hemV0DQo+IFNlbnQ6IDA4IE1hcmNoIDIwMjIgMTk6NTQNCi4uDQo+ID4g V2hpY2ggaXMgdGhlIGNvbW1vbiBzaWRlIG9mIHRoYXQgbWF4X3QoKSA/DQo+ID4gSWYgaXQgaXMg bW9uX3Rzb19zZWdzIGl0IG1pZ2h0IGJlIHdvcnRoIGF2b2lkaW5nIHRoZQ0KPiA+IGRpdmlkZSBi eSBjb2RpbmcgYXM6DQo+ID4NCj4gPiAgICAgICAgIHJldHVybiBieXRlcyA+IG1zc19ub3cgKiBt aW5fdHNvX3NlZ3MgPyBieXRlcyAvIG1zc19ub3cgOiBtaW5fdHNvX3NlZ3M7DQo+ID4NCj4gDQo+ IEkgdGhpbmsgdGhlIGNvbW1vbiBjYXNlIGlzIHdoZW4gdGhlIGRpdmlkZSBtdXN0IGhhcHBlbi4N Cj4gTm90IHN1cmUgaWYgdGhpcyByZWFsbHkgbWF0dGVycyB3aXRoIGN1cnJlbnQgY3B1cy4NCg0K TGFzdCBkb2N1bWVudCBJIGxvb2tlZCBhdCBzdGlsbCBxdW90ZWQgY29uc2lkZXJhYmxlIGxhdGVu Y3kNCmZvciBpbnRlZ2VyIGRpdmlkZSBvbiB4ODYtNjQuDQpJZiB5b3UgZ2V0IGEgY21vdiB0aGVu IGFsbCB0aGUgaW5zdHJ1Y3Rpb25zIHdpbGwganVzdCBnZXQNCnF1ZXVlZCB3YWl0aW5nIGZvciB0 aGUgZGl2aWRlIHRvIGNvbXBsZXRlLg0KQnV0IGEgYnJhbmNoIGNvdWxkIGVhc2lseSBnZXQgbWlz cHJlZGljdGVkLg0KVGhhdCBpcyBsaWtlbHkgdG8gaGl0IHBwYyAtIHdoaWNoIEkgZG9uJ3QgdGhp bmsgaGFzIGEgY21vdj8NCg0KT1RPSCBpZiB0aGUgZGl2aWRlIGlzIGluIHRoZSA/OiBiaXQgbm90 aGluZyBwcm9iYWJseSBkZXBlbmRzDQpvbiBpdCBmb3IgYSB3aGlsZSAtIHNvIHRoZSBsYXRlbmN5 IHdvbid0IG1hdHRlci4NCg0KTGF0ZXN0IGZpZ3VyZXMgSSBoYXZlIGFyZSBmb3Igc2t5bGFrZVgN CiAgICAgICAgIHUtb3BzICAgICAgICAgICAgbGF0ZW5jeSAxL3Rocm91Z2hwdXQNCkRJViAgIHI4 IDEwIDEwIHAwIHAxIHA1IHA2ICAyMyAgICAgICAgNg0KRElWICByMTYgMTAgMTAgcDAgcDEgcDUg cDYgIDIzICAgICAgICA2DQpESVYgIHIzMiAxMCAxMCBwMCBwMSBwNSBwNiAgMjYgICAgICAgIDYN CkRJViAgcjY0IDM2IDM2IHAwIHAxIHA1IHA2IDM1LTg4ICAgIDIxLTgzDQpJRElWICByOCAxMSAx MSBwMCBwMSBwNSBwNiAgMjQgICAgICAgIDYNCklESVYgcjE2IDEwIDEwIHAwIHAxIHA1IHA2ICAy MyAgICAgICAgNg0KSURJViByMzIgMTAgMTAgcDAgcDEgcDUgcDYgIDI2ICAgICAgICA2DQpJRElW IHI2NCA1NyA1NyBwMCBwMSBwNSBwNiA0Mi05NSAgICAyNC05MA0KDQpCcm9hZHdlbGwgaXMgYSBi aXQgc2xvd2VyLg0KTm90ZSB0aGF0IDY0Yml0IGRpdmlkZSBpcyByZWFsbHkgaG9ycmlkLg0KDQpJ IHRoaW5rIHRoYXQgb25lIHdpbGwgYmUgMzJiaXQgLSBzbyAnb25seScgMjYgY2xvY2tzDQpsYXRl bmN5Lg0KDQpBTUQgUnl6ZW4gaXMgYSBsb3QgYmV0dGVyIGZvciA2NGJpdCBkaXZpZGVzOg0KICAg ICAgICAgICAgICAgbHRuY3kgIDEvdGhwdA0KRElWICAgcjgvbTggIDEgMTMtMTYgMTMtMTYNCkRJ ViAgcjE2L20xNiAyIDE0LTIxIDE0LTIxDQpESVYgIHIzMi9tMzIgMiAxNC0zMCAxNC0zMA0KRElW ICByNjQvbTY0IDIgMTQtNDYgMTQtNDUNCklESVYgIHI4L204ICAxIDEzLTE2IDEzLTE2DQpJRElW IHIxNi9tMTYgMiAxMy0yMSAxNC0yMg0KSURJViByMzIvbTMyIDIgMTQtMzAgMTQtMzANCklESVYg cjY0L202NCAyIDE0LTQ3IDE0LTQ1DQpCdXQgbGVzcyBwaXBlbGluaW5nIGZvciAzMmJpdCBvbmVz Lg0KDQpRdWl0ZSBob3cgdGhvc2UgdGFibGVzIGFjdHVhbGx5IGFmZmVjdCByZWFsIGNvZGUNCmlz IGFub3RoZXIgbWF0dGVyIC0gYnV0IHRoZXkgYXJlIGd1aWRlbGluZXMgYWJvdXQNCndoYXQgaXMg cG9zc2libGUgKGlmIHlvdSBjYW4gZ2V0IHRoZSB1LW9wcyBleGVjdXRlZA0Kb24gdGhlIHJpZ2h0 IHBvcnRzKS4NCg0KCURhdmlkDQoNCi0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJh bWxleSBSb2FkLCBNb3VudCBGYXJtLCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0 cmF0aW9uIE5vOiAxMzk3Mzg2IChXYWxlcykNCg==