From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiri Pirko Subject: [patch net-next 2/4] net: allow to change carrier via sysfs Date: Fri, 28 Dec 2012 10:49:38 +0100 Message-ID: <1356688180-3549-3-git-send-email-jiri@resnulli.us> References: <1356688180-3549-1-git-send-email-jiri@resnulli.us> Cc: davem@davemloft.net, edumazet@google.com, bhutchings@solarflare.com, mirqus@gmail.com, shemminger@vyatta.com, greearb@candelatech.com, fbl@redhat.com, john.r.fastabend@intel.com To: netdev@vger.kernel.org Return-path: Received: from mail-ee0-f52.google.com ([74.125.83.52]:39024 "EHLO mail-ee0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752148Ab2L1JuB (ORCPT ); Fri, 28 Dec 2012 04:50:01 -0500 Received: by mail-ee0-f52.google.com with SMTP id d17so5000148eek.11 for ; Fri, 28 Dec 2012 01:49:59 -0800 (PST) In-Reply-To: <1356688180-3549-1-git-send-email-jiri@resnulli.us> Sender: netdev-owner@vger.kernel.org List-ID: Make carrier writable Signed-off-by: Jiri Pirko --- net/core/net-sysfs.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 28c5f5a..29c884a 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -126,6 +126,19 @@ static ssize_t show_broadcast(struct device *dev, return -EINVAL; } +static int change_carrier(struct net_device *net, unsigned long new_carrier) +{ + if (!netif_running(net)) + return -EINVAL; + return dev_change_carrier(net, (bool) new_carrier); +} + +static ssize_t store_carrier(struct device *dev, struct device_attribute *attr, + const char *buf, size_t len) +{ + return netdev_store(dev, attr, buf, len, change_carrier); +} + static ssize_t show_carrier(struct device *dev, struct device_attribute *attr, char *buf) { @@ -331,7 +344,7 @@ static struct device_attribute net_class_attributes[] = { __ATTR(link_mode, S_IRUGO, show_link_mode, NULL), __ATTR(address, S_IRUGO, show_address, NULL), __ATTR(broadcast, S_IRUGO, show_broadcast, NULL), - __ATTR(carrier, S_IRUGO, show_carrier, NULL), + __ATTR(carrier, S_IRUGO | S_IWUSR, show_carrier, store_carrier), __ATTR(speed, S_IRUGO, show_speed, NULL), __ATTR(duplex, S_IRUGO, show_duplex, NULL), __ATTR(dormant, S_IRUGO, show_dormant, NULL), -- 1.8.0