leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

6lowpan: add support for getting short address

Browse Source 
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: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Aring 2016-06-15 21:20:26 +02:00 committed by David S. Miller
parent bbe5f5cefe
commit cfce94653d
1 changed files with 39 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
net/6lowpan/debugfs.c
View File

@ -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: