From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751915AbcBYVZw (ORCPT ); Thu, 25 Feb 2016 16:25:52 -0500 Received: from shards.monkeyblade.net ([149.20.54.216]:46262 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750716AbcBYVZv (ORCPT ); Thu, 25 Feb 2016 16:25:51 -0500 Date: Thu, 25 Feb 2016 16:25:48 -0500 (EST) Message-Id: <20160225.162548.782902392289793973.davem@davemloft.net> To: sunil.kovvuri@gmail.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, sgoutham@cavium.com, robert.richter@caviumnetworks.com, jerin.jacob@caviumnetworks.com Subject: Re: [PATCH] net: thunderx: Fix for Qset error due to CQ full From: David Miller In-Reply-To: <1456312250-25694-1-git-send-email-sunil.kovvuri@gmail.com> References: <1456312250-25694-1-git-send-email-sunil.kovvuri@gmail.com> X-Mailer: Mew version 6.6 on Emacs 24.5 / 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]); Thu, 25 Feb 2016 13:25:51 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: sunil.kovvuri@gmail.com Date: Wed, 24 Feb 2016 16:40:50 +0530 > From: Sunil Goutham > > On Thunderx pass 1.x and pass2 due to a HW errata default CQ > DROP_LEVEL of 0x80 is not sufficient to avoid CQ_WR_FULL Qset > error when packets are being received at >20Mpps resulting in > complete stall of packet reception. > > This patch will configure it to 0x100 which is what is expected > by HW on Thunderx. On future passes of thunderx and other chips > HW default/reset value will be 0x100 or higher hence not overwritten. > > Signed-off-by: Jerin Jacob > Signed-off-by: Sunil Goutham Applied, thank you.