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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 DF1B0C433DF for ; Fri, 5 Jun 2020 12:30:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AC3B8207F9 for ; Fri, 5 Jun 2020 12:30:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591360258; bh=h1LcBw55r4LP8d1ELU0w81ims4oDlKhJhKPLveqyyLk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=bdNrnZlAN69Wb13GT3+tXDFWohzeEBl27YieUb/x5BHttyEO0FRjtSiS9QCCvSnqZ JFHMexEiHZwr39bsUOXMZCsZKKMhgLEfjqdh4uGx+VNMJmFMi45nDkKheI+xcvqus0 6GAgOoJpw5wRSulKpiqhwZk3Gwt/YAo3KvUtDSGE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728066AbgFEMa4 (ORCPT ); Fri, 5 Jun 2020 08:30:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:56830 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726727AbgFEMZ3 (ORCPT ); Fri, 5 Jun 2020 08:25:29 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 319D1206DC; Fri, 5 Jun 2020 12:25:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591359929; bh=h1LcBw55r4LP8d1ELU0w81ims4oDlKhJhKPLveqyyLk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IYVti2W2nsO3hTHidSapypTsL6+b9Pbha09eZs4cyMsqdwwgrXai63DsHbRZofCF+ hF60cZH3jGVU2vJS6jEJbpU6+Ulo5H5MrnQpteTIWNaKrv9ENspmt4gLJJ4yH4Db1F WN3Cy30slrV1aIthVGciRpgNzcwOghcqU5fUaDSo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Heinrich Kuhn , Simon Horman , "David S . Miller" , Sasha Levin , oss-drivers@netronome.com, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.6 09/17] nfp: flower: fix used time of merge flow statistics Date: Fri, 5 Jun 2020 08:25:08 -0400 Message-Id: <20200605122517.2882338-9-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200605122517.2882338-1-sashal@kernel.org> References: <20200605122517.2882338-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Heinrich Kuhn [ Upstream commit 5b186cd60f033110960a3db424ffbd6de4cee528 ] Prior to this change the correct value for the used counter is calculated but not stored nor, therefore, propagated to user-space. In use-cases such as OVS use-case at least this results in active flows being removed from the hardware datapath. Which results in both unnecessary flow tear-down and setup, and packet processing on the host. This patch addresses the problem by saving the calculated used value which allows the value to propagate to user-space. Found by inspection. Fixes: aa6ce2ea0c93 ("nfp: flower: support stats update for merge flows") Signed-off-by: Heinrich Kuhn Signed-off-by: Simon Horman Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/netronome/nfp/flower/offload.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/netronome/nfp/flower/offload.c b/drivers/net/ethernet/netronome/nfp/flower/offload.c index 7ca5c1becfcf..c5dcfdd69773 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/offload.c +++ b/drivers/net/ethernet/netronome/nfp/flower/offload.c @@ -1440,7 +1440,8 @@ __nfp_flower_update_merge_stats(struct nfp_app *app, ctx_id = be32_to_cpu(sub_flow->meta.host_ctx_id); priv->stats[ctx_id].pkts += pkts; priv->stats[ctx_id].bytes += bytes; - max_t(u64, priv->stats[ctx_id].used, used); + priv->stats[ctx_id].used = max_t(u64, used, + priv->stats[ctx_id].used); } } -- 2.25.1