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Mon, 13 Jan 2020 12:46:13 +0300 (MSK) MIME-Version: 1.0 Date: Mon, 13 Jan 2020 12:46:13 +0300 From: Alexander Lobakin To: Vladimir Oltean Subject: Re: [PATCH RFC net-next 05/19] net: dsa: tag_ar9331: add GRO callbacks In-Reply-To: References: <20191230143028.27313-1-alobakin@dlink.ru> <20191230143028.27313-6-alobakin@dlink.ru> User-Agent: Roundcube Webmail/1.4.0 Message-ID: <0002a7388dfd5fb70db4b43a6c521c52@dlink.ru> X-Sender: alobakin@dlink.ru X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200113_014627_165594_B9983390 X-CRM114-Status: UNSURE ( 7.39 ) X-CRM114-Notice: Please train this message. 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Miller" , Taehee Yoo Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org VmxhZGltaXIgT2x0ZWFuIHdyb3RlIDEzLjAxLjIwMjAgMTI6NDI6Cj4gSGkgQWxleGFuZGVyLAo+ IAo+IE9uIE1vbiwgMTMgSmFuIDIwMjAgYXQgMTE6MjIsIEFsZXhhbmRlciBMb2Jha2luIDxhbG9i YWtpbkBkbGluay5ydT4gCj4gd3JvdGU6Cj4+IAo+PiBDUFUgcG9ydHMgY2FuJ3QgYmUgYnJpZGdl ZCBhbnl3YXkKPj4gCj4+IFJlZ2FyZHMsCj4+IOGatyDhm5Yg4ZqiIOGapiDhmqAg4ZqxCj4gCj4g VGhlIGZhY3QgdGhhdCBDUFUgcG9ydHMgY2FuJ3QgYmUgYnJpZGdlZCBpcyBhbHJlYWR5IG5vdCBp ZGVhbC4KPiBPbmUgY2FuIGhhdmUgYSBEU0Egc3dpdGNoIHdpdGggY2FzY2FkZWQgc3dpdGNoZXMg b24gZWFjaCBwb3J0LCBzbyBpdAo+IGFjdHMgbGlrZSBOIERTQSBtYXN0ZXJzIChub3QgYXMgRFNB IGxpbmtzLCBzaW5jZSB0aGUgdGFnZ2VycyBhcmUKPiBpbmNvbXBhdGlibGUpLCB3aXRoIGVhY2gg c3dpdGNoIGZvcm1pbmcgaXRzIG93biB0cmVlLiBJdCBpcyBkZXNpcmFibGUKPiB0aGF0IHRoZSBw b3J0cyBvZiB0aGUgRFNBIHN3aXRjaCBvbiB0b3AgYXJlIGJyaWRnZWQsIHNvIHRoYXQKPiBmb3J3 YXJkaW5nIGJldHdlZW4gY2FzY2FkZWQgc3dpdGNoZXMgZG9lcyBub3QgcGFzcyB0aHJvdWdoIHRo ZSBDUFUuCgpPaCwgSSBzZWUuIEJ1dCBjdXJyZW50bHkgRFNBIGluZnJhIGZvcmJpZHMgdGhlIGFk ZGluZyBEU0EgbWFzdGVycyB0bwpicmlkZ2VzIElJUkMuIENhbid0IG5hbWUgaXQgZ29vZCBvciBi YWQgZGVjaXNpb24sIGJ1dCB3YXMgaW50cm9kdWNlZAp0byBwcmV2ZW50IGFjY2lkZW50YWwgcGFj a2V0IGZsb3cgYnJlYWtpbmcgb24gRFNBIHNldHVwcy4KCj4gLVZsYWRpbWlyCgpSZWdhcmRzLArh mrcg4ZuWIOGaoiDhmqYg4ZqgIOGasQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtl cm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxt YW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo= 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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 0FBFCC33CA8 for ; Mon, 13 Jan 2020 09:46:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D231C2080D for ; Mon, 13 Jan 2020 09:46:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=dlink.ru header.i=@dlink.ru header.b="bRqKzJCw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727014AbgAMJqb (ORCPT ); Mon, 13 Jan 2020 04:46:31 -0500 Received: from fd.dlink.ru ([178.170.168.18]:54344 "EHLO fd.dlink.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725992AbgAMJqb (ORCPT ); Mon, 13 Jan 2020 04:46:31 -0500 Received: by fd.dlink.ru (Postfix, from userid 5000) id 5A4A41B2130C; Mon, 13 Jan 2020 12:46:28 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 fd.dlink.ru 5A4A41B2130C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dlink.ru; s=mail; t=1578908788; bh=mHvumthM4kqA6nZVMBkNipV495noJBzqsUxcFANvR+c=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=bRqKzJCwoYMAV12rYK3E7eu7St01aA1F7/0z3636veVJnbqnefcePy7g0zkw4mPMk ybo9ivig7DazPIlAJslLHu4GABVqm+9IpUB1fq22T6nfPjFNIpXLGGkz3trsHejYJT wQHirYb2NWM2tt/p0FT+FjQNPnwQe7lle63GxDE4= Received: from mail.rzn.dlink.ru (mail.rzn.dlink.ru [178.170.168.13]) by fd.dlink.ru (Postfix) with ESMTP id 466E51B201E9; Mon, 13 Jan 2020 12:46:14 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 fd.dlink.ru 466E51B201E9 Received: from mail.rzn.dlink.ru (localhost [127.0.0.1]) by mail.rzn.dlink.ru (Postfix) with ESMTP id D30BE1B20320; Mon, 13 Jan 2020 12:46:13 +0300 (MSK) Received: from mail.rzn.dlink.ru (localhost [127.0.0.1]) by mail.rzn.dlink.ru (Postfix) with ESMTPA; Mon, 13 Jan 2020 12:46:13 +0300 (MSK) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Date: Mon, 13 Jan 2020 12:46:13 +0300 From: Alexander Lobakin To: Vladimir Oltean Cc: Florian Fainelli , "David S. Miller" , Edward Cree , Andrew Lunn , Vivien Didelot , Hauke Mehrtens , Sean Wang , Matthias Brugger , Jiri Pirko , Eric Dumazet , Paolo Abeni , Jakub Kicinski , Taehee Yoo , Stephen Hemminger , Stanislav Fomichev , Daniel Borkmann , Song Liu , Matteo Croce , Jakub Sitnicki , Paul Blakey , Yoshiki Komachi , netdev , lkml , "moderated list:ARM/Mediatek SoC support" , "moderated list:ARM/Mediatek SoC support" Subject: Re: [PATCH RFC net-next 05/19] net: dsa: tag_ar9331: add GRO callbacks In-Reply-To: References: <20191230143028.27313-1-alobakin@dlink.ru> <20191230143028.27313-6-alobakin@dlink.ru> User-Agent: Roundcube Webmail/1.4.0 Message-ID: <0002a7388dfd5fb70db4b43a6c521c52@dlink.ru> X-Sender: alobakin@dlink.ru Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Vladimir Oltean wrote 13.01.2020 12:42: > Hi Alexander, > > On Mon, 13 Jan 2020 at 11:22, Alexander Lobakin > wrote: >> >> CPU ports can't be bridged anyway >> >> Regards, >> ᚷ ᛖ ᚢ ᚦ ᚠ ᚱ > > The fact that CPU ports can't be bridged is already not ideal. > One can have a DSA switch with cascaded switches on each port, so it > acts like N DSA masters (not as DSA links, since the taggers are > incompatible), with each switch forming its own tree. It is desirable > that the ports of the DSA switch on top are bridged, so that > forwarding between cascaded switches does not pass through the CPU. Oh, I see. But currently DSA infra forbids the adding DSA masters to bridges IIRC. Can't name it good or bad decision, but was introduced to prevent accidental packet flow breaking on DSA setups. > -Vladimir Regards, ᚷ ᛖ ᚢ ᚦ ᚠ ᚱ