Commit cfce9465 authored by Alexander Aring's avatar Alexander Aring Committed by David S. Miller
Browse files

6lowpan: add support for getting short address 



In case of sending RA messages we need some way to get the short address
from an 802.15.4 6LoWPAN interface. This patch will add a temporary
debugfs entry for experimental userspace api.

Reviewed-by: default avatarStefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: default avatarAlexander Aring <aar@pengutronix.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bbe5f5ce

net/6lowpan/debugfs.c

+39 −0
Original line number Diff line number Diff line
@@ -245,6 +245,41 @@ static const struct file_operations lowpan_context_fops = { 
	.release	= single_release,

};



static int lowpan_short_addr_get(void *data, u64 *val)

{

	struct wpan_dev *wdev = data;



	rtnl_lock();

	*val = le16_to_cpu(wdev->short_addr);

	rtnl_unlock();



	return 0;

}



DEFINE_SIMPLE_ATTRIBUTE(lowpan_short_addr_fops, lowpan_short_addr_get,

			NULL, "0x%04llx\n");



static int lowpan_dev_debugfs_802154_init(const struct net_device *dev,

					  struct lowpan_dev *ldev)

{

	struct dentry *dentry, *root;



	if (!lowpan_is_ll(dev, LOWPAN_LLTYPE_IEEE802154))

		return 0;



	root = debugfs_create_dir("ieee802154", ldev->iface_debugfs);

	if (!root)

		return -EINVAL;



	dentry = debugfs_create_file("short_addr", 0444, root,

				     lowpan_802154_dev(dev)->wdev->ieee802154_ptr,

				     &lowpan_short_addr_fops);

	if (!dentry)

		return -EINVAL;



	return 0;

}



int lowpan_dev_debugfs_init(struct net_device *dev)

{

	struct lowpan_dev *ldev = lowpan_dev(dev);
@@ -272,6 +307,10 @@ int lowpan_dev_debugfs_init(struct net_device *dev) 
			goto remove_root;

	}



	ret = lowpan_dev_debugfs_802154_init(dev, ldev);

	if (ret < 0)

		goto remove_root;



	return 0;



remove_root:

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