From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: Thu, 12 May 2022 15:31:33 -0700
Subject: Bluetooth: MGMT: Add conditions for setting
 HCI_CONN_FLAG_REMOTE_WAKEUP
Patch-mainline: v5.19-rc1
Git-commit: a9a347655d224fa2841877957b34fc9d491fc2d7
References: jsc#PED-1407

HCI_CONN_FLAG_REMOTE_WAKEUP can only be set if device can be programmed
in the allowlist which in case of device using RPA requires LL Privacy
support to be enabled.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=215768
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 net/bluetooth/mgmt.c |   18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -4529,6 +4529,23 @@ static int set_device_flags(struct sock
 		params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr,
 						le_addr_type(cp->addr.type));
 		if (params) {
+			DECLARE_BITMAP(flags, __HCI_CONN_NUM_FLAGS);
+
+			bitmap_from_u64(flags, current_flags);
+
+			/* Devices using RPAs can only be programmed in the
+			 * acceptlist LL Privacy has been enable otherwise they
+			 * cannot mark HCI_CONN_FLAG_REMOTE_WAKEUP.
+			 */
+			if (test_bit(HCI_CONN_FLAG_REMOTE_WAKEUP, flags) &&
+			    !use_ll_privacy(hdev) &&
+			    hci_find_irk_by_addr(hdev, &params->addr,
+						 params->addr_type)) {
+				bt_dev_warn(hdev,
+					    "Cannot set wakeable for RPA");
+				goto unlock;
+			}
+
 			bitmap_from_u64(params->flags, current_flags);
 			status = MGMT_STATUS_SUCCESS;
 
@@ -4545,6 +4562,7 @@ static int set_device_flags(struct sock
 		}
 	}
 
+unlock:
 	hci_dev_unlock(hdev);
 
 done: