From patchwork Tue Mar 31 08:57:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "gregkh@linuxfoundation.org" X-Patchwork-Id: 228548 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=-6.9 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 3AA36C2D0EF for ; Tue, 31 Mar 2020 09:23:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 080FA208E0 for ; Tue, 31 Mar 2020 09:23:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585646592; bh=Po14qPslBUSQW5+rJhoPZzDlO390mhUWITIQyhjIjAk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=DN8gRqoQZxNNC/INlvhDrY+GNUzEZ2OHrqXaA+zxZ2K8VPVLGDnF0WUik72yb3JMe 6LuMczXAA56wINudmUBWslonMqMDVA1RiTjrlXFYVCOhUKJRQmqVJeM8rmnivrEUKZ Oc2zliVVvMd7Ai1U6OVSSKASBH9J6B1NdxmXs60E= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730876AbgCaJDt (ORCPT ); Tue, 31 Mar 2020 05:03:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:43616 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730391AbgCaJDt (ORCPT ); Tue, 31 Mar 2020 05:03:49 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 154ED20787; Tue, 31 Mar 2020 09:03:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585645428; bh=Po14qPslBUSQW5+rJhoPZzDlO390mhUWITIQyhjIjAk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pTRqATZOojkYY3PG+fHC+7h4+3W4RXfgZqLHw8U461x8Dx/TOGcj0DBlVDdJqqTL9 XjQApSXedqINkSZy+5GAMykOHBNpryA5Q0bUFJwF8qqC8xhDYVTzGJB/u/Q+9L34Yp Be1mnPE4+moaBHk1Csi8NiRz1uBhH+Rfsyio52sY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Noam Dagan , Arthur Kiyanovski , "David S. Miller" Subject: [PATCH 5.5 050/170] net: ena: fix continuous keep-alive resets Date: Tue, 31 Mar 2020 10:57:44 +0200 Message-Id: <20200331085429.726319603@linuxfoundation.org> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200331085423.990189598@linuxfoundation.org> References: <20200331085423.990189598@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Arthur Kiyanovski [ Upstream commit dfdde1345bc124816f0fd42fa91b8748051e758e ] last_keep_alive_jiffies is updated in probe and when a keep-alive event is received. In case the driver times-out on a keep-alive event, it has high chances of continuously timing-out on keep-alive events. This is because when the driver recovers from the keep-alive-timeout reset the value of last_keep_alive_jiffies is very old, and if a keep-alive event is not received before the next timer expires, the value of last_keep_alive_jiffies will cause another keep-alive-timeout reset and so forth in a loop. Solution: Update last_keep_alive_jiffies whenever the device is restored after reset. Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)") Signed-off-by: Noam Dagan Signed-off-by: Arthur Kiyanovski Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/amazon/ena/ena_netdev.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -2832,6 +2832,7 @@ static int ena_restore_device(struct ena netif_carrier_on(adapter->netdev); mod_timer(&adapter->timer_service, round_jiffies(jiffies + HZ)); + adapter->last_keep_alive_jiffies = jiffies; dev_err(&pdev->dev, "Device reset completed successfully, Driver info: %s\n", version);