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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 0E60BC352A3 for ; Thu, 13 Feb 2020 05:33:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D3AAA206DB for ; Thu, 13 Feb 2020 05:33:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726436AbgBMFc7 (ORCPT ); Thu, 13 Feb 2020 00:32:59 -0500 Received: from mgwkm01.jp.fujitsu.com ([202.219.69.168]:18731 "EHLO mgwkm01.jp.fujitsu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726098AbgBMFc7 (ORCPT ); Thu, 13 Feb 2020 00:32:59 -0500 X-Greylist: delayed 682 seconds by postgrey-1.27 at vger.kernel.org; Thu, 13 Feb 2020 00:32:58 EST Received: from kw-mxq.gw.nic.fujitsu.com (unknown [192.168.231.130]) by mgwkm01.jp.fujitsu.com with smtp id 4e58_21ef_72859388_b07b_4858_b1a2_2c5be16b76c5; Thu, 13 Feb 2020 14:21:34 +0900 Received: from durio.utsfd.cs.fujitsu.co.jp (durio.utsfd.cs.fujitsu.co.jp [10.24.20.112]) by kw-mxq.gw.nic.fujitsu.com (Postfix) with ESMTP id 21C3FAC00BE for ; Thu, 13 Feb 2020 14:21:33 +0900 (JST) Received: by durio.utsfd.cs.fujitsu.co.jp (Postfix, from userid 1008) id C932A1FF2A4; Thu, 13 Feb 2020 14:21:32 +0900 (JST) From: Keiya Nobuta To: "David S. Miller" , Jakub Kicinski Cc: netdev@vger.kernel.org, Keiya Nobuta Subject: [PATCH] net: sched: Add sysfs_notify for /sys/class/net/*/carrier Date: Thu, 13 Feb 2020 14:21:11 +0900 Message-Id: <20200213052111.19595-1-nobuta.keiya@fujitsu.com> X-Mailer: git-send-email 2.17.1 X-TM-AS-GCONF: 00 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch makes /sys/class//carrier pollable and allows application to monitor current physical link state changes. Signed-off-by: Keiya Nobuta --- net/sched/sch_generic.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index 6c9595f..67e4190 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -493,6 +493,7 @@ void netif_carrier_on(struct net_device *dev) linkwatch_fire_event(dev); if (netif_running(dev)) __netdev_watchdog_up(dev); + sysfs_notify(&dev->dev.kobj, NULL, "carrier"); } } EXPORT_SYMBOL(netif_carrier_on); @@ -510,6 +511,7 @@ void netif_carrier_off(struct net_device *dev) return; atomic_inc(&dev->carrier_down_count); linkwatch_fire_event(dev); + sysfs_notify(&dev->dev.kobj, NULL, "carrier"); } } EXPORT_SYMBOL(netif_carrier_off); -- 2.7.4