Bluetooth: Expose static address value for LE capable controllers

For LE capable controllers, the static address can be configured. For
debugging purposes expose the value in debugfs.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index bb95dddb5e50..3c1014c2dcde 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -118,6 +118,29 @@ static int auto_accept_delay_get(void *data, u64 *val)
 DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
                         auto_accept_delay_set, "%llu\n");
 
+static int static_address_show(struct seq_file *f, void *p)
+{
+        struct hci_dev *hdev = f->private;
+
+        hci_dev_lock(hdev);
+        seq_printf(f, "%pMR\n", &hdev->static_addr);
+        hci_dev_unlock(hdev);
+
+        return 0;
+}
+
+static int static_address_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, static_address_show, inode->i_private);
+}
+
+static const struct file_operations static_address_fops = {
+        .open           = static_address_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
 /* ---- HCI requests ---- */
 
 static void hci_req_sync_complete(struct hci_dev *hdev, u8 result)
@@ -816,6 +839,10 @@ static int __hci_init(struct hci_dev *hdev)
                 debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs,
                                     hdev, &auto_accept_delay_fops);
 
+        if (lmp_le_capable(hdev))
+                debugfs_create_file("static_address", 0444, hdev->debugfs,
+                                   hdev, &static_address_fops);
+
         return 0;
 }