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>

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index bb95ddd..3c1014c 100644 (file)
--- 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;
 }