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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68B8DC48BDF for ; Sun, 13 Jun 2021 12:17:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 39AEA611CA for ; Sun, 13 Jun 2021 12:17:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231749AbhFMMTw convert rfc822-to-8bit (ORCPT ); Sun, 13 Jun 2021 08:19:52 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:32393 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231733AbhFMMTv (ORCPT ); Sun, 13 Jun 2021 08:19:51 -0400 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-245-2rowExfsN32CZdeXwWA3Lg-1; Sun, 13 Jun 2021 13:17:46 +0100 X-MC-Unique: 2rowExfsN32CZdeXwWA3Lg-1 Received: from AcuMS.Aculab.com (10.202.163.6) by AcuMS.aculab.com (10.202.163.6) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Sun, 13 Jun 2021 13:17:45 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.018; Sun, 13 Jun 2021 13:17:45 +0100 From: David Laight To: 'Jakub Kicinski' , Stephen Hemminger CC: Alexander Aring , Stefan Metzmacher , Steve French , =?iso-8859-1?Q?Aur=E9lien_Aptel?= , Network Development , linux-nfs , CIFS , Leif Sahlberg , "Steven Whitehouse" Subject: RE: quic in-kernel implementation? Thread-Topic: quic in-kernel implementation? Thread-Index: AQHXXU9D5dOcWjzpmkiJ27fvmvFu8asR4Naw Date: Sun, 13 Jun 2021 12:17:45 +0000 Message-ID: <166ca5b32a9d4576bc02cd8972a281e9@AcuMS.aculab.com> References: <87pmwxsjxm.fsf@suse.com> <35352ef0-86ed-aaa5-4a49-b2b08dc3674d@samba.org> <20210608153349.0f02ba71@hermes.local> <20210609094818.7aaf21bd@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> In-Reply-To: <20210609094818.7aaf21bd@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> 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: 8BIT Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org From: Jakub Kicinski > Sent: 09 June 2021 17:48 ... > > > I think two veth interfaces can help to test something like that, > > > either with a "fuse-like socket" on the other end or an user space > > > application. Just doing a ping-pong example. > > > > > > Afterwards we can look at how to replace the user generated socket > > > application with any $LIBQUIC e.g. msquic implementation as second > > > step. > > > > Socket state management is complex and timers etc in userspace are hard. > > +1 seeing the struggles fuse causes in storage land "fuse for sockets" > is not an exciting temporary solution IMHO.. Especially since you'd want reasonable performance for quic. Fuse is normally used to access obscure filesystems where you just need access, rather than something that really needs to be quick. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)