Commit ff80e519 authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller
Browse files

net: export physical port id via sysfs 



Signed-off-by: default avatarJiri Pirko <jiri@resnulli.us>
Acked-by: default avatarBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: default avatarNarendra K <narendra_k@dell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 66cae9ed

net/core/net-sysfs.c

+22 −0
Original line number Diff line number Diff line
@@ -334,6 +334,27 @@ static ssize_t store_group(struct device *dev, struct device_attribute *attr, 
	return netdev_store(dev, attr, buf, len, change_group);

}



static ssize_t show_phys_port_id(struct device *dev,

				 struct device_attribute *attr, char *buf)

{

	struct net_device *netdev = to_net_dev(dev);

	ssize_t ret = -EINVAL;



	if (!rtnl_trylock())

		return restart_syscall();



	if (dev_isalive(netdev)) {

		struct netdev_phys_port_id ppid;



		ret = dev_get_phys_port_id(netdev, &ppid);

		if (!ret)

			ret = sprintf(buf, "%*phN\n", ppid.id_len, ppid.id);

	}

	rtnl_unlock();



	return ret;

}



static struct device_attribute net_class_attributes[] = {

	__ATTR(addr_assign_type, S_IRUGO, show_addr_assign_type, NULL),

	__ATTR(addr_len, S_IRUGO, show_addr_len, NULL),
@@ -355,6 +376,7 @@ static struct device_attribute net_class_attributes[] = { 
	__ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len,

	       store_tx_queue_len),

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

	__ATTR(phys_port_id, S_IRUGO, show_phys_port_id, NULL),

	{}

};