From patchwork Sun Nov 8 00:46:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Lobakin X-Patchwork-Id: 11889357 X-Patchwork-Delegate: kuba@kernel.org 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=-9.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 AE0F7C388F7 for ; Sun, 8 Nov 2020 00:46:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 403BF20702 for ; Sun, 8 Nov 2020 00:46:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=pm.me header.i=@pm.me header.b="S/4EhYGc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728752AbgKHAqb (ORCPT ); Sat, 7 Nov 2020 19:46:31 -0500 Received: from mail-40134.protonmail.ch ([185.70.40.134]:27764 "EHLO mail-40134.protonmail.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726043AbgKHAqa (ORCPT ); Sat, 7 Nov 2020 19:46:30 -0500 Date: Sun, 08 Nov 2020 00:46:15 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pm.me; s=protonmail; t=1604796387; bh=LOZ/q4BZZQQmIvWoLo/yfk47gGQwkc69xB7RkRHk/ec=; h=Date:To:From:Cc:Reply-To:Subject:From; b=S/4EhYGcNNYt2yG69lFK6vHdOBSC+NOFAY591UUI35bXN1bd+ObM2YWGtnhVWci1w d/SrVoBqm2nyFK7Eglixioax8rehkINydYq/tpBT/0vpvGBjMvM5zlOOh69VV2s+Lh NCa5Shm9CbzIks5qNN8CbLNQHw6R76hiZA0ploy7GTRga9Ud2d1C+6eQouwdtOfC9m jB1karvaB0DPBnm4/OT0ZW99V15w3Vlv/lUa5suc9BqedsnqRUnvLtoTOUok7iolSe Y9yefGqIwcRfizC9Cvz796byD1E0o8YMGplw+jBPr4YdWO4fwc7DR2XPYQCV/j6wG7 t7wHEHcWTXu2w== To: "David S. Miller" , Jakub Kicinski From: Alexander Lobakin Cc: Michal Kubecek , Maxim Mikityanskiy , Alexander Lobakin , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Reply-To: Alexander Lobakin Subject: [PATCH v2 net] ethtool: netlink: add missing netdev_features_change() call Message-ID: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org After updating userspace Ethtool from 5.7 to 5.9, I noticed that NETDEV_FEAT_CHANGE is no more raised when changing netdev features through Ethtool. That's because the old Ethtool ioctl interface always calls netdev_features_change() at the end of user request processing to inform the kernel that our netdevice has some features changed, but the new Netlink interface does not. Instead, it just notifies itself with ETHTOOL_MSG_FEATURES_NTF. Replace this ethtool_notify() call with netdev_features_change(), so the kernel will be aware of any features changes, just like in case with the ioctl interface. This does not omit Ethtool notifications, as Ethtool itself listens to NETDEV_FEAT_CHANGE and drops ETHTOOL_MSG_FEATURES_NTF on it (net/ethtool/netlink.c:ethnl_netdev_event()). From v1 [1]: - dropped extra new line as advised by Jakub; - no functional changes. [1] https://lore.kernel.org/netdev/AlZXQ2o5uuTVHCfNGOiGgJ8vJ3KgO5YIWAnQjH0cDE@cp3-web-009.plabs.ch Fixes: 0980bfcd6954 ("ethtool: set netdev features with FEATURES_SET request") Signed-off-by: Alexander Lobakin Reviewed-by: Michal Kubecek --- net/ethtool/features.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ethtool/features.c b/net/ethtool/features.c index 8ee4cdbd6b82..1c9f4df273bd 100644 --- a/net/ethtool/features.c +++ b/net/ethtool/features.c @@ -280,7 +280,7 @@ int ethnl_set_features(struct sk_buff *skb, struct genl_info *info) active_diff_mask, compact); } if (mod) - ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL); + netdev_features_change(dev); out_rtnl: rtnl_unlock();