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

net: export physical port id via sysfs

parent 66cae9ed
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+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),
	{}
};