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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 F0987C43603 for ; Tue, 10 Dec 2019 07:14:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CC52620663 for ; Tue, 10 Dec 2019 07:14:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727402AbfLJHOp (ORCPT ); Tue, 10 Dec 2019 02:14:45 -0500 Received: from ivanoab7.miniserver.com ([37.128.132.42]:50020 "EHLO www.kot-begemot.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727272AbfLJHOp (ORCPT ); Tue, 10 Dec 2019 02:14:45 -0500 Received: from tun252.jain.kot-begemot.co.uk ([192.168.18.6] helo=jain.kot-begemot.co.uk) by www.kot-begemot.co.uk with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ieZjH-0001OU-7D; Tue, 10 Dec 2019 07:14:43 +0000 Received: from sleer.kot-begemot.co.uk ([192.168.3.72]) by jain.kot-begemot.co.uk with esmtps (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1ieZjE-0002ob-VC; Tue, 10 Dec 2019 07:14:42 +0000 Subject: Re: [RFC v1 1/2] um: drivers: remove support for UML_NET_PCAP To: Richard Weinberger , Brendan Higgins Cc: Johannes Berg , Jeff Dike , linux-um , linux-kernel , davidgow References: <20191206020153.228283-1-brendanhiggins@google.com> <20191206020153.228283-2-brendanhiggins@google.com> <20191207012108.GA220741@google.com> <15f048d3-07ab-61c1-c6e0-0712e626dd33@cambridgegreys.com> <1785498655.111829.1575936178298.JavaMail.zimbra@nod.at> From: Anton Ivanov Organization: Cambridge Greys Message-ID: <87f182c6-82a3-d696-72e4-ddaa781a655b@cambridgegreys.com> Date: Tue, 10 Dec 2019 07:14:40 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <1785498655.111829.1575936178298.JavaMail.zimbra@nod.at> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Clacks-Overhead: GNU Terry Pratchett Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/12/2019 00:02, Richard Weinberger wrote: > ----- Ursprüngliche Mail ----- >> Von: "Brendan Higgins" >>> IMHO we should at least mark them as "obsolete" and start preparing to >>> remove them. >> >> Alright, I will send a patch out which marks the other network drivers >> as "obsolete". >> >> Clarification: Should I mark all UML network devices as "obsolete" >> except for NET_VECTOR? Daemon and MCAST looked to me (I am not a >> networking expert), like they might not be covered by vector. > > No. Why? > > Thanks, > //richard > > _______________________________________________ > linux-um mailing list > linux-um@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-um > At least pcap and vde are maintenance issues. They do not even build today. Off the top of my head, daemon needs fixes to the switch - it has an O(n) performance hit for n="number of ports" as well as a few other issues. Tap has a fully functional replacement Pcap has a fully functional replacement mcast for 2 instances is functionally equivalent to running l2tp or gre back-to-back. IMHO we can start marking some of them as obsolete. -- Anton R. Ivanov Cambridgegreys Limited. Registered in England. Company Number 10273661 https://www.cambridgegreys.com/ From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ivanoab7.miniserver.com ([37.128.132.42] helo=www.kot-begemot.co.uk) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ieZjI-0003k7-Qa for linux-um@lists.infradead.org; Tue, 10 Dec 2019 07:14:46 +0000 Subject: Re: [RFC v1 1/2] um: drivers: remove support for UML_NET_PCAP References: <20191206020153.228283-1-brendanhiggins@google.com> <20191206020153.228283-2-brendanhiggins@google.com> <20191207012108.GA220741@google.com> <15f048d3-07ab-61c1-c6e0-0712e626dd33@cambridgegreys.com> <1785498655.111829.1575936178298.JavaMail.zimbra@nod.at> From: Anton Ivanov Message-ID: <87f182c6-82a3-d696-72e4-ddaa781a655b@cambridgegreys.com> Date: Tue, 10 Dec 2019 07:14:40 +0000 MIME-Version: 1.0 In-Reply-To: <1785498655.111829.1575936178298.JavaMail.zimbra@nod.at> Content-Language: en-US List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-um" Errors-To: linux-um-bounces+geert=linux-m68k.org@lists.infradead.org To: Richard Weinberger , Brendan Higgins Cc: davidgow , Jeff Dike , linux-um , linux-kernel , Johannes Berg T24gMTAvMTIvMjAxOSAwMDowMiwgUmljaGFyZCBXZWluYmVyZ2VyIHdyb3RlOgo+IC0tLS0tIFVy c3Byw7xuZ2xpY2hlIE1haWwgLS0tLS0KPj4gVm9uOiAiQnJlbmRhbiBIaWdnaW5zIiA8YnJlbmRh bmhpZ2dpbnNAZ29vZ2xlLmNvbT4KPj4+IElNSE8gd2Ugc2hvdWxkIGF0IGxlYXN0IG1hcmsgdGhl bSBhcyAib2Jzb2xldGUiIGFuZCBzdGFydCBwcmVwYXJpbmcgdG8KPj4+IHJlbW92ZSB0aGVtLgo+ Pgo+PiBBbHJpZ2h0LCBJIHdpbGwgc2VuZCBhIHBhdGNoIG91dCB3aGljaCBtYXJrcyB0aGUgb3Ro ZXIgbmV0d29yayBkcml2ZXJzCj4+IGFzICJvYnNvbGV0ZSIuCj4+Cj4+IENsYXJpZmljYXRpb246 IFNob3VsZCBJIG1hcmsgYWxsIFVNTCBuZXR3b3JrIGRldmljZXMgYXMgIm9ic29sZXRlIgo+PiBl eGNlcHQgZm9yIE5FVF9WRUNUT1I/IERhZW1vbiBhbmQgTUNBU1QgbG9va2VkIHRvIG1lIChJIGFt IG5vdCBhCj4+IG5ldHdvcmtpbmcgZXhwZXJ0KSwgbGlrZSB0aGV5IG1pZ2h0IG5vdCBiZSBjb3Zl cmVkIGJ5IHZlY3Rvci4KPiAKPiBOby4gV2h5Pwo+IAo+IFRoYW5rcywKPiAvL3JpY2hhcmQKPiAK PiBfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwo+IGxpbnV4 LXVtIG1haWxpbmcgbGlzdAo+IGxpbnV4LXVtQGxpc3RzLmluZnJhZGVhZC5vcmcKPiBodHRwOi8v bGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LXVtCj4gCkF0IGxlYXN0 IHBjYXAgYW5kIHZkZSBhcmUgbWFpbnRlbmFuY2UgaXNzdWVzLiBUaGV5IGRvIG5vdCBldmVuIGJ1 aWxkIHRvZGF5LgoKT2ZmIHRoZSB0b3Agb2YgbXkgaGVhZCwgZGFlbW9uIG5lZWRzIGZpeGVzIHRv IHRoZSBzd2l0Y2ggLSBpdCBoYXMgYW4gCk8obikgcGVyZm9ybWFuY2UgaGl0IGZvciBuPSJudW1i ZXIgb2YgcG9ydHMiIGFzIHdlbGwgYXMgYSBmZXcgb3RoZXIgaXNzdWVzLgoKVGFwIGhhcyBhIGZ1 bGx5IGZ1bmN0aW9uYWwgcmVwbGFjZW1lbnQKClBjYXAgaGFzIGEgZnVsbHkgZnVuY3Rpb25hbCBy ZXBsYWNlbWVudAoKbWNhc3QgZm9yIDIgaW5zdGFuY2VzIGlzIGZ1bmN0aW9uYWxseSBlcXVpdmFs ZW50IHRvIHJ1bm5pbmcgbDJ0cCBvciBncmUgCmJhY2stdG8tYmFjay4KCklNSE8gd2UgY2FuIHN0 YXJ0IG1hcmtpbmcgc29tZSBvZiB0aGVtIGFzIG9ic29sZXRlLgoKLS0gCkFudG9uIFIuIEl2YW5v dgpDYW1icmlkZ2VncmV5cyBMaW1pdGVkLiBSZWdpc3RlcmVkIGluIEVuZ2xhbmQuIENvbXBhbnkg TnVtYmVyIDEwMjczNjYxCmh0dHBzOi8vd3d3LmNhbWJyaWRnZWdyZXlzLmNvbS8KCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LXVtIG1haWxpbmcg bGlzdApsaW51eC11bUBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQu b3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtdW0K