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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 03EA6ECDE47 for ; Thu, 8 Nov 2018 21:56:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B6E072133D for ; Thu, 8 Nov 2018 21:56:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="PVg6Dp4C" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B6E072133D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729193AbeKIHdy (ORCPT ); Fri, 9 Nov 2018 02:33:54 -0500 Received: from mail.kernel.org ([198.145.29.99]:50198 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727962AbeKIHdx (ORCPT ); Fri, 9 Nov 2018 02:33:53 -0500 Received: from localhost (unknown [208.72.13.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0C91E21019; Thu, 8 Nov 2018 21:56:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541714186; bh=FNBcTtkXgKtguCkxwBgzwvuwpNHW/bg3SgJGVkTxnSA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PVg6Dp4CQwMv98QLGv7CQe8p7s76y9S9mzXcIyPq0gn9heZAStu+7E3qcwsVGCqHK e5LbtFwy+TeJpWKGbd2he9AgVaoAlKCVbS286wg7pW6/Fm44vLqS5BXkvZBgxGkpBT YfDCwiN8TCmFlXCdsrcVxcJEuhOqLjIz0zyakOkg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Shota Suzuki , Aaron Brown , Jeff Kirsher , Sasha Levin Subject: [PATCH 3.18 110/144] igb: Unpair the queues when changing the number of queues Date: Thu, 8 Nov 2018 13:51:21 -0800 Message-Id: <20181108215105.837628150@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181108215054.826084593@linuxfoundation.org> References: <20181108215054.826084593@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 37a5d163fb447b39f7960d0534de30e88ad395bb ] By the commit 72ddef0506da ("igb: Fix oops caused by missing queue pairing"), the IGB_FLAG_QUEUE_PAIRS flag can now be set when changing the number of queues by "ethtool -L", but it is never cleared unless the igb driver is reloaded. This patch clears it if queue pairing becomes unnecessary as a result of "ethtool -L". Signed-off-by: Shota Suzuki Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/igb/igb_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 1ffad88e8a29..84049078c4f0 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2941,6 +2941,8 @@ void igb_set_flag_queue_pairs(struct igb_adapter *adapter, */ if (adapter->rss_queues > (max_rss_queues / 2)) adapter->flags |= IGB_FLAG_QUEUE_PAIRS; + else + adapter->flags &= ~IGB_FLAG_QUEUE_PAIRS; break; } } -- 2.17.1