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 70CF5C433EF for ; Fri, 26 Nov 2021 02:42:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1359035AbhKZCpp (ORCPT ); Thu, 25 Nov 2021 21:45:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:50268 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358693AbhKZCn0 (ORCPT ); Thu, 25 Nov 2021 21:43:26 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 40FF861268; Fri, 26 Nov 2021 02:35:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1637894137; bh=snKzOfYzg5rGBdcC9iHEAIqQO6YtlCGw0huCLqTu+ZM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sNz2CqKKFUHD3lhk+m1p/gz5vhsUHsUMW7VQQFw7O5dwSUZdsn93AyCYVdrn0dR3S vKsvXWa4VVydUucQSM+shmtyfik2lib70NB7Y0E2fVAT6LvqGqOWR+nq8fTX1EDEHC hiDOY5tFMLQTTgCzpC1GeFO11pPojUYTySy8N0mRCecI87v5ylasg2tQanBkvc/nhI 0Z7RavenOK03Z8qJc76/hDpN4A/MaSU2CHn4098lG9VttfT8/Nnf5kaJAenaY9aSny Et6LhRUk5DcPDmoBzRKuqIyjRSleo6TwE6jJcrG1wwJna9Q+Ox3yOeDnqPWaBLOaHj DeWzyTVnDvnbQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Nicolas Dichtel , "David S . Miller" , Sasha Levin , kuba@kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 02/15] tun: fix bonding active backup with arp monitoring Date: Thu, 25 Nov 2021 21:35:20 -0500 Message-Id: <20211126023533.442895-2-sashal@kernel.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211126023533.442895-1-sashal@kernel.org> References: <20211126023533.442895-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Nicolas Dichtel [ Upstream commit a31d27fbed5d518734cb60956303eb15089a7634 ] As stated in the bonding doc, trans_start must be set manually for drivers using NETIF_F_LLTX: Drivers that use NETIF_F_LLTX flag must also update netdev_queue->trans_start. If they do not, then the ARP monitor will immediately fail any slaves using that driver, and those slaves will stay down. Link: https://www.kernel.org/doc/html/v5.15/networking/bonding.html#arp-monitor-operation Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/tun.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 8ee2c519c9bf0..d5bb972cbc9a6 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1085,6 +1085,7 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev) { struct tun_struct *tun = netdev_priv(dev); int txq = skb->queue_mapping; + struct netdev_queue *queue; struct tun_file *tfile; int len = skb->len; @@ -1131,6 +1132,10 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev) if (ptr_ring_produce(&tfile->tx_ring, skb)) goto drop; + /* NETIF_F_LLTX requires to do our own update of trans_start */ + queue = netdev_get_tx_queue(dev, txq); + queue->trans_start = jiffies; + /* Notify and wake up reader process */ if (tfile->flags & TUN_FASYNC) kill_fasync(&tfile->fasync, SIGIO, POLL_IN); -- 2.33.0