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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E529AC433FE for ; Wed, 23 Nov 2022 09:03:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236990AbiKWJDz (ORCPT ); Wed, 23 Nov 2022 04:03:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40780 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236937AbiKWJDb (ORCPT ); Wed, 23 Nov 2022 04:03:31 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 31F4F102E6E for ; Wed, 23 Nov 2022 01:03:30 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 9A5BD61B29 for ; Wed, 23 Nov 2022 09:03:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 871B6C433C1; Wed, 23 Nov 2022 09:03:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1669194209; bh=s5O5mpRq9Mu+XQB0sf0l35D8dEJdMq7Jo9hj3Q5E3BY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D1Hr8/Zvy6X94JH36T7gwBLLzAOx09YRAzadSRApVaEhuIVGSjIVYzarjNPvpUdOn p/23BoiZ3Xfl05ZaczazLvopi9D2uhh6QR4c3mXEOX7bJhpXwz5A+wBJK2SgbAbmDt az9+UoVkRhx8Jored6liz5v43YmBQapA72fofyMQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Akshay Navgire , Alex Barba , Andy Gospodarek , Michael Chan , Jakub Kicinski , Sasha Levin Subject: [PATCH 4.19 006/114] bnxt_en: fix potentially incorrect return value for ndo_rx_flow_steer Date: Wed, 23 Nov 2022 09:49:53 +0100 Message-Id: <20221123084552.101113316@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221123084551.864610302@linuxfoundation.org> References: <20221123084551.864610302@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Alex Barba [ Upstream commit 02597d39145bb0aa81d04bf39b6a913ce9a9d465 ] In the bnxt_en driver ndo_rx_flow_steer returns '0' whenever an entry that we are attempting to steer is already found. This is not the correct behavior. The return code should be the value/index that corresponds to the entry. Returning zero all the time causes the RFS records to be incorrect unless entry '0' is the correct one. As flows migrate to different cores this can create entries that are not correct. Fixes: c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.") Reported-by: Akshay Navgire Signed-off-by: Alex Barba Signed-off-by: Andy Gospodarek Signed-off-by: Michael Chan Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 5e30299bcf64..b49f8a97d753 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -8327,8 +8327,8 @@ static int bnxt_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb, rcu_read_lock(); hlist_for_each_entry_rcu(fltr, head, hash) { if (bnxt_fltr_match(fltr, new_fltr)) { + rc = fltr->sw_id; rcu_read_unlock(); - rc = 0; goto err_free; } } -- 2.35.1