Commit 6126ffab authored by Luiz Augusto von Dentz's avatar Luiz Augusto von Dentz Committed by Marcel Holtmann
Browse files

Bluetooth: Introduce HCI_CONN_FLAG_DEVICE_PRIVACY device flag 



This introduces HCI_CONN_FLAG_DEVICE_PRIVACY which can be used by
userspace to indicate to the controller to use Device Privacy Mode to a
specific device.

Signed-off-by: default avatarLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 800fe5ec

include/net/bluetooth/hci_core.h

+4 −0
Original line number Diff line number Diff line
@@ -154,6 +154,7 @@ struct bdaddr_list_with_irk { 


enum hci_conn_flags {

	HCI_CONN_FLAG_REMOTE_WAKEUP,

	HCI_CONN_FLAG_DEVICE_PRIVACY,



	__HCI_CONN_NUM_FLAGS,

};
@@ -1466,6 +1467,9 @@ void hci_conn_del_sysfs(struct hci_conn *conn); 
#define use_ll_privacy(dev) (ll_privacy_capable(dev) && \

			     hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))



#define privacy_mode_capable(dev) (use_ll_privacy(dev) && \

				   (hdev->commands[39] & 0x04))



/* Use enhanced synchronous connection if command is supported */

#define enhanced_sco_capable(dev) ((dev)->commands[29] & 0x08)

net/bluetooth/mgmt.c

+12 −0
Original line number Diff line number Diff line
@@ -3978,6 +3978,11 @@ static int exp_ll_privacy_feature_changed(bool enabled, struct hci_dev *hdev, 
	memcpy(ev.uuid, rpa_resolution_uuid, 16);

	ev.flags = cpu_to_le32((enabled ? BIT(0) : 0) | BIT(1));



	if (enabled && privacy_mode_capable(hdev))

		set_bit(HCI_CONN_FLAG_DEVICE_PRIVACY, hdev->conn_flags);

	else

		clear_bit(HCI_CONN_FLAG_DEVICE_PRIVACY, hdev->conn_flags);



	return mgmt_limited_event(MGMT_EV_EXP_FEATURE_CHANGED, hdev,

				  &ev, sizeof(ev),

				  HCI_MGMT_EXP_FEATURE_EVENTS, skip);
@@ -4461,6 +4466,13 @@ static int set_device_flags(struct sock *sk, struct hci_dev *hdev, void *data, 
		if (params) {

			bitmap_from_u64(params->flags, current_flags);

			status = MGMT_STATUS_SUCCESS;



			/* Update passive scan if HCI_CONN_FLAG_DEVICE_PRIVACY

			 * has been set.

			 */

			if (test_bit(HCI_CONN_FLAG_DEVICE_PRIVACY,

				     params->flags))

				hci_update_passive_scan(hdev);

		} else {

			bt_dev_warn(hdev, "No such LE device %pMR (0x%x)",

				    &cp->addr.bdaddr,