Bluetooth: Fix advertising address type when toggling connectable

When the connectable setting is toggled using mgmt_set_connectable the
HCI_CONNECTABLE flag will only be set once the related HCI commands
succeed. When determining what kind of advertising to do we need to
therefore also check whether there is a pending Set Connectable command
in addition to the current flag value.

The enable_advertising function was already taking care of this for the
advertising type with the help of the get_adv_type function, but was
failing to do the same for the address type selection. This patch
converts the get_adv_type function to be more generic in that it returns
the expected connectable state and updates the enable_advertising
function to use the return value both for the advertising type as well
as the advertising address type.

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

1 files changed, 11 insertions, 10 deletions

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 25b8b278debd..d6e269287cfc 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -817,10 +817,9 @@ static void update_class(struct hci_request *req)
         hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod);
 }
 
-static u8 get_adv_type(struct hci_dev *hdev)
+static bool get_connectable(struct hci_dev *hdev)
 {
         struct pending_cmd *cmd;
-        bool connectable;
 
         /* If there's a pending mgmt command the flag will not yet have
          * it's final value, so check for this first.
@@ -828,12 +827,10 @@ static u8 get_adv_type(struct hci_dev *hdev)
         cmd = mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, hdev);
         if (cmd) {
                 struct mgmt_mode *cp = cmd->param;
-                connectable = !!cp->val;
-        } else {
-                connectable = test_bit(HCI_CONNECTABLE, &hdev->dev_flags);
+                return cp->val;
         }
 
-        return connectable ? LE_ADV_IND : LE_ADV_NONCONN_IND;
+        return test_bit(HCI_CONNECTABLE, &hdev->dev_flags);
 }
 
 static void enable_advertising(struct hci_request *req)
@@ -841,17 +838,21 @@ static void enable_advertising(struct hci_request *req)
         struct hci_dev *hdev = req->hdev;
         struct hci_cp_le_set_adv_param cp;
         u8 own_addr_type, enable = 0x01;
-        bool require_privacy;
+        bool connectable;
 
-        require_privacy = !test_bit(HCI_CONNECTABLE, &hdev->dev_flags);
+        connectable = get_connectable(hdev);
 
-        if (hci_update_random_address(req, require_privacy, &own_addr_type) < 0)
+        /* Set require_privacy to true only when non-connectable
+         * advertising is used. In that case it is fine to use a
+         * non-resolvable private address.
+         */
+        if (hci_update_random_address(req, !connectable, &own_addr_type) < 0)
                 return;
 
         memset(&cp, 0, sizeof(cp));
         cp.min_interval = __constant_cpu_to_le16(0x0800);
         cp.max_interval = __constant_cpu_to_le16(0x0800);
-        cp.type = get_adv_type(hdev);
+        cp.type = connectable ? LE_ADV_IND : LE_ADV_NONCONN_IND;
         cp.own_address_type = own_addr_type;
         cp.channel_map = hdev->le_adv_channel_map;