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authorAlexander Aring <aar@pengutronix.de>2016-06-15 21:20:26 +0200
committerDavid S. Miller <davem@davemloft.net>2016-06-15 20:41:24 -0700
commitcfce94653dad2d0661e1926c028ce63052eb20cd (patch)
tree3eb56ca839fd2da67c249c9e37c40e0cfaeb7ea4
parentbbe5f5cefe2818eda0392c178de141ffc5734d90 (diff)
downloadlinux-stericsson-cfce94653dad2d0661e1926c028ce63052eb20cd.tar.gz
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: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/6lowpan/debugfs.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/net/6lowpan/debugfs.c b/net/6lowpan/debugfs.c
index acbaa3db493b..24915e0bb9ea 100644
--- a/net/6lowpan/debugfs.c
+++ b/net/6lowpan/debugfs.c
@@ -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: