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[209.132.180.67]) by mx.google.com with ESMTP id w10si6766388otg.295.2020.01.13.01.47.26; Mon, 13 Jan 2020 01:47:38 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@dlink.ru header.s=mail header.b=bRqKzJCw; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726878AbgAMJqb (ORCPT + 99 others); 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= X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on mail.dlink.ru X-Spam-Level: X-Spam-Status: No, score=-99.2 required=7.5 tests=BAYES_50,URIBL_BLOCKED, USER_IN_WHITELIST autolearn=disabled version=3.4.2 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