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 D87AAC433F5 for ; Thu, 5 May 2022 13:48:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345299AbiEENwL (ORCPT ); Thu, 5 May 2022 09:52:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36810 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1380157AbiEENwD (ORCPT ); Thu, 5 May 2022 09:52:03 -0400 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.86.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id CA940580D2 for ; Thu, 5 May 2022 06:48:13 -0700 (PDT) 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-41-1put9XVNPQW46Ot1ysVRxg-1; Thu, 05 May 2022 14:48:11 +0100 X-MC-Unique: 1put9XVNPQW46Ot1ysVRxg-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 15.0.1497.32; Thu, 5 May 2022 14:48:10 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.033; Thu, 5 May 2022 14:48:10 +0100 From: David Laight To: 'Maxim Mikityanskiy' CC: Jakub Kicinski , "David S. Miller" , Daniel Borkmann , Paolo Abeni , Boris Pismenny , Tariq Toukan , "Saeed Mahameed" , Gal Pressman , "netdev@vger.kernel.org" Subject: RE: [PATCH net-next] tls: Add opt-in zerocopy mode of sendfile() Thread-Topic: [PATCH net-next] tls: Add opt-in zerocopy mode of sendfile() Thread-Index: AQHYXx+Xq0V3mdE7TkGKm+YxYaezY60OeVSwgAGyMICAACK8UA== Date: Thu, 5 May 2022 13:48:10 +0000 Message-ID: <5dba0c54c647491a85366834c8c1c7d1@AcuMS.aculab.com> References: <20220427175048.225235-1-maximmi@nvidia.com> <20220428151142.3f0ccd83@kernel.org> <20220429121117.21bf7490@kernel.org> <3f5f17a11d294781a5e500b3903aa902@AcuMS.aculab.com> <41abbf9f-8719-f2a7-36b5-fd6835bb133d@nvidia.com> In-Reply-To: <41abbf9f-8719-f2a7-36b5-fd6835bb133d@nvidia.com> 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 RnJvbTogTWF4aW0gTWlraXR5YW5za2l5DQo+IFNlbnQ6IDA1IE1heSAyMDIyIDEzOjQwDQo+IA0K PiBPbiAyMDIyLTA1LTA0IDEyOjQ5LCBEYXZpZCBMYWlnaHQgd3JvdGU6DQo+ID4+PiBJZiB5b3Ug ZGVjbGFyZSB0aGUgdW5pb24gb24gdGhlIHN0YWNrIGluIHRoZSBjYWxsZXJzLCBhbmQgcGFzcyBi eSB2YWx1ZQ0KPiA+Pj4gLSBpcyB0aGUgY29tcGlsZXIgbm90IGdvaW5nIHRvIGJlIGNsZXZlciBl bm91Z2ggdG8gc3RpbGwgRERSVD8NCj4gPj4NCj4gPj4gQWgsIE9LLCBpdCBzaG91bGQgZG8gdGhl IHRoaW5nLiBJIHRob3VnaHQgeW91IHdhbnRlZCBtZSB0byBkaXRjaCB0aGUNCj4gPj4gdW5pb24g YWx0b2dldGhlci4NCj4gPg0KPiA+IFNvbWUgYXJjaGl0ZWN0dXJlcyBhbHdheXMgcGFzcyBzdHJ1 Y3QvdW5pb24gYnkgYWRkcmVzcy4NCj4gPiBXaGljaCBpcyBwcm9iYWJseSBub3Qgd2hhdCB5b3Ug aGFkIGluIG1pbmQuDQo+IA0KPiBEbyB5b3UgaGF2ZSBhbnkgc3BlY2lmaWMgYXJjaGl0ZWN0dXJl IGluIG1pbmQ/IEkgY291bGRuJ3QgZmluZCBhbnkNCj4gaW5mb3JtYXRpb24gdGhhdCBpdCBoYXBw ZW5zIGFueXdoZXJlLCB4ODZfNjQgQUJJIFsxXSAocGFnZXMgMjAtMjEpDQo+IGFsaWducyB3aXRo IG15IGV4cGVjdGF0aW9ucywgYW5kIG15IGNvbW1vbiBzZW5zZSBjYW4ndCBleHBsYWluIHdoeSB3 b3VsZA0KPiBzb21lIGFyY2hpdGVjdHVyZXMgZG8gd2hhdCB5b3Ugc2F5Lg0KPiANCj4gSW4gQywg d2hlbiB0aGUgY2FsbGVyIHBhc3NlcyBhIHN0cnVjdCBhcyBhIHBhcmFtZXRlciwgdGhlIGNhbGxl ZSBjYW4NCj4gZnJlZWx5IG1vZGlmeSBpdC4gSWYgdGhlIGNvbXBpbGVyIHNpbGVudGx5IHJlcGxh Y2VkIGl0IHdpdGggYSBwb2ludGVyLA0KPiB0aGUgY2FsbGVlIHdvdWxkIGNvcnJ1cHQgdGhlIGNh bGxlcidzIGxvY2FsIHZhcmlhYmxlLCBzbyBzdWNoIGFwcHJvYWNoDQo+IHJlcXVpcmVzIHRoZSBj YWxsZXIgdG8gbWFrZSBhbiBleHRyYSBjb3B5Lg0KDQpZZXMsIHRoYXQgaXMgd2hhdCBoYXBwZW5z Lg0KDQo+IE1ha2luZyBhbiBleHRyYSBjb3B5IG9uIHRoZQ0KPiBzdGFjayBhbmQgcGFzc2luZyBh IHBvaW50ZXIgZG9lc24ndCBtYWtlIGFueSBzZW5zZSB0byBtZSBpZiB5b3UgY2FuIGp1c3QNCj4g bWFrZSBhIGNvcHkgb24gdGhlIHN0YWNrIChvciB0byBhIHJlZ2lzdGVyKSBhbmQgY2FsbCBpdCBh IHBhcmFtZXRlci4NCj4gDQo+IElmIHlvdSBrbm93IGFueSBzcGVjaWZpYyBhcmNoaXRlY3R1cmUg c3VwcG9ydGVkIGJ5IExpbnV4IHRoYXQgcGFzc2VzIGFsbA0KPiB1bmlvbnMgYnkgYSBwb2ludGVy LCBjb3VsZCB5b3UgcGxlYXNlIHBvaW50IG1lIHRvIGl0PyBNYXliZSBJJ20gbWlzc2luZw0KPiBz b21ldGhpbmcgaW4gbXkgbG9naWMsIGFuZCBhIHJlYWwtd29ybGQgZXhhbXBsZSB3aWxsIGV4cGxh aW4gdGhpbmdzLCBidXQNCj4gYXQgdGhlIG1vbWVudCBpdCBzb3VuZHMgdW5yZWFsaXN0aWMgdG8g bWUuDQoNCkxvb2sgYXQgYW55IG9sZCBhcmNoaXRlY3R1cmUsIG02OGsgYWxtb3N0IGNlcnRhaW5s eSBwYXNzZXMgYWxsIHN0cnVjdHVyZXMNCmJ5IGFkZHJlc3MuDQppMzg2IHdvdWxkIC0gYnV0IEkg dGhpbmsgdGhlICdyZWdwYXJtJyBvcHRpb24gaW5jbHVkZXMgcGFzc2luZyBzbWFsbA0Kc3RydWN0 dXJlcyBieSB2YWx1ZS4NCkkgdGhpbmsgc3BhcmMzMiB1c2VkIHRvLCBidXQgdGhhdCBtaWdodCBo YXZlIGNoYW5nZWQgaW4gdGhlIGxhc3QgMzAgeWVhcnMuDQoNCglEYXZpZA0KDQotDQpSZWdpc3Rl cmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtl eW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=