Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751485AbdHJFwr (ORCPT ); Thu, 10 Aug 2017 01:52:47 -0400 Received: from shards.monkeyblade.net ([184.105.139.130]:52032 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750735AbdHJFwp (ORCPT ); Thu, 10 Aug 2017 01:52:45 -0400 Date: Wed, 09 Aug 2017 22:52:43 -0700 (PDT) Message-Id: <20170809.225243.2204411285392662424.davem@davemloft.net> To: john@phrozen.org Cc: andrew@lunn.ch, vivien.didelot@savoirfairelinux.com, f.fainelli@gmail.com, sean.wang@mediatek.com, netdev@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, muciri@openmesh.com, shashidhar.lakkavalli@openmesh.com Subject: Re: [PATCH 0/4] net-next: dsa: fix flow dissection From: David Miller In-Reply-To: <20170809124119.24320-1-john@phrozen.org> References: <20170809124119.24320-1-john@phrozen.org> X-Mailer: Mew version 6.7 on Emacs 25.2 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Wed, 09 Aug 2017 22:52:45 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 720 Lines: 17 From: John Crispin Date: Wed, 9 Aug 2017 14:41:15 +0200 > RPS and probably other kernel features are currently broken on some if not > all DSA devices. The root cause of this is that skb_hash will call the > flow_dissector. At this point the skb still contains the magic switch > header and the skb->protocol field is not set up to the correct 802.3 > value yet. By the time the tag specific code is called, removing the header > and properly setting the protocol an invalid hash is already set. In the > case of the mt7530 this will result in all flows always having the same > hash. > > Changes since RFC: > * use a callback instead of static values > * add cover letter Series applied, thanks.