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Commit fdae0fde authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller
Browse files

net: allow to change carrier via sysfs 



Make carrier writable

Signed-off-by: default avatarJiri Pirko <jiri@resnulli.us>
Acked-by: default avatarFlavio Leitner <fbl@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4bf84c35

net/core/net-sysfs.c

+14 −1
Original line number Diff line number Diff line
@@ -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),