[RFC 11/12] 6lowpan: add support for getting short address
flat view
From: Alexander Aring <hidden>
Date: 2016-05-23 19:22:07
Also in:
linux-bluetooth
Subsystem:
6lowpan generic (btle/ieee 802.15.4), networking [general], the rest · Maintainers:
Alexander Aring, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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. Signed-off-by: Alexander Aring <redacted> --- net/6lowpan/debugfs.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)
diff --git a/net/6lowpan/debugfs.c b/net/6lowpan/debugfs.c
index acbaa3d..638ae59 100644
--- a/net/6lowpan/debugfs.c
+++ b/net/6lowpan/debugfs.c@@ -245,6 +245,37 @@ 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; + + if (!lowpan_is_ll(dev, LOWPAN_LLTYPE_IEEE802154)) + return 0; + + dentry = debugfs_create_file("short_addr", 0444, ldev->iface_debugfs, + 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 +303,10 @@ 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:
--
2.8.2