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Commit a512b92b authored by Vlad Dogaru's avatar Vlad Dogaru Committed by David S. Miller
Browse files

net: add sysfs entry for device group 



The group of a network device can be queried or changed from userspace
using sysfs.

For example, considering sysfs mounted in /sys, one can change the group
that interface lo belongs to:
	echo 1 > /sys/class/net/lo/group

Signed-off-by: default avatarVlad Dogaru <ddvlad@rosedu.org>
Acked-by: default avatarStephen Hemminger <shemminger@vyatta.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 84c49d8c

net/core/net-sysfs.c

+15 −0
Original line number Original line Diff line number Diff line
@@ -295,6 +295,20 @@ static ssize_t show_ifalias(struct device *dev, 
	return ret;

	return ret;

}

}





NETDEVICE_SHOW(group, fmt_dec);



static int change_group(struct net_device *net, unsigned long new_group)

{

	dev_set_group(net, (int) new_group);

	return 0;

}



static ssize_t store_group(struct device *dev, struct device_attribute *attr,

			 const char *buf, size_t len)

{

	return netdev_store(dev, attr, buf, len, change_group);

}



static struct device_attribute net_class_attributes[] = {

static struct device_attribute net_class_attributes[] = {

	__ATTR(addr_assign_type, S_IRUGO, show_addr_assign_type, NULL),

	__ATTR(addr_assign_type, S_IRUGO, show_addr_assign_type, NULL),

	__ATTR(addr_len, S_IRUGO, show_addr_len, NULL),

	__ATTR(addr_len, S_IRUGO, show_addr_len, NULL),
@@ -316,6 +330,7 @@ static struct device_attribute net_class_attributes[] = { 
	__ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags),

	__ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags),

	__ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len,

	__ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len,

	       store_tx_queue_len),

	       store_tx_queue_len),

	__ATTR(group, S_IRUGO | S_IWUSR, show_group, store_group),

	{}

	{}

};

};