Commit ac345813 authored by Marcel Holtmann's avatar Marcel Holtmann Committed by Johan Hedberg
Browse files

Bluetooth: Expose current identity information in debugfs 



When using LE Privacy it is useful to know the local identity address,
identity address type and identity resolving key. For debugging purposes
add these information to debugfs.

Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
parent 7bf32048

net/bluetooth/hci_core.c

+40 −2
Original line number Diff line number Diff line
@@ -579,6 +579,42 @@ static int sniff_max_interval_get(void *data, u64 *val) 
DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get,

			sniff_max_interval_set, "%llu\n");



static int identity_show(struct seq_file *f, void *p)

{

	struct hci_dev *hdev = f->private;

	bdaddr_t *addr;

	u8 addr_type;



	hci_dev_lock(hdev);



	if (test_bit(HCI_FORCE_STATIC_ADDR, &hdev->dev_flags) ||

	    !bacmp(&hdev->bdaddr, BDADDR_ANY)) {

		addr = &hdev->static_addr;

		addr_type = ADDR_LE_DEV_RANDOM;

	} else {

		addr = &hdev->bdaddr;

		addr_type = ADDR_LE_DEV_PUBLIC;

	}



	seq_printf(f, "%pMR (type %u) %*phN\n", addr, addr_type, 16, hdev->irk);



	hci_dev_unlock(hdev);



	return 0;

}



static int identity_open(struct inode *inode, struct file *file)

{

	return single_open(file, identity_show, inode->i_private);

}



static const struct file_operations identity_fops = {

	.open		= identity_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



static int random_address_show(struct seq_file *f, void *p)

{

	struct hci_dev *hdev = f->private;
@@ -1624,12 +1660,14 @@ static int __hci_init(struct hci_dev *hdev) 
	}



	if (lmp_le_capable(hdev)) {

		debugfs_create_file("identity", 0400, hdev->debugfs,

				    hdev, &identity_fops);

		debugfs_create_file("rpa_timeout", 0644, hdev->debugfs,

				    hdev, &rpa_timeout_fops);

		debugfs_create_file("random_address", 0444, hdev->debugfs,

				    hdev, &random_address_fops);

		debugfs_create_file("static_address", 0444, hdev->debugfs,

				    hdev, &static_address_fops);

		debugfs_create_file("rpa_timeout", 0644, hdev->debugfs,

				    hdev, &rpa_timeout_fops);



		/* For controllers with a public address, provide a debug

		 * option to force the usage of the configured static