Bluetooth: Fix using RPA when address has been resolved

When connecting to a device using an RPA if the address has been
resolved by the controller (types 0x02 and 0x03) the identity address
shall be used as the actual RPA in the advertisement won't be visible
to the host.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 20 insertions, 13 deletions

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 1934a4b6c047..b1062f5cf488 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2367,7 +2367,7 @@ static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
 	hci_dev_unlock(hdev);
 }
 
-static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type)
+static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved)
 {
 	/* When using controller based address resolution, then the new
 	 * address types 0x02 and 0x03 are used. These types need to be
@@ -2375,11 +2375,17 @@ static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type)
 	 */
 	switch (type) {
 	case ADDR_LE_DEV_PUBLIC_RESOLVED:
+		if (resolved)
+			*resolved = true;
 		return ADDR_LE_DEV_PUBLIC;
 	case ADDR_LE_DEV_RANDOM_RESOLVED:
+		if (resolved)
+			*resolved = true;
 		return ADDR_LE_DEV_RANDOM;
 	}
 
+	if (resolved)
+		*resolved = false;
 	return type;
 }
 
@@ -2394,7 +2400,7 @@ static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
 	if (!conn)
 		return;
 
-	own_address_type = ev_bdaddr_type(hdev, own_address_type);
+	own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL);
 
 	/* Store the initiator and responder address information which
 	 * is needed for SMP. These values will not change during the
@@ -5284,7 +5290,7 @@ static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
 		conn->dst_type = irk->addr_type;
 	}
 
-	conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type);
+	conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL);
 
 	if (status) {
 		hci_le_conn_failed(conn, status);
@@ -5466,8 +5472,8 @@ static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
 /* This function requires the caller holds hdev->lock */
 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
 					      bdaddr_t *addr,
-					      u8 addr_type, u8 adv_type,
-					      bdaddr_t *direct_rpa)
+					      u8 addr_type, bool addr_resolved,
+					      u8 adv_type, bdaddr_t *direct_rpa)
 {
 	struct hci_conn *conn;
 	struct hci_conn_params *params;
@@ -5519,9 +5525,9 @@ static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
 		}
 	}
 
-	conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
-			      hdev->def_le_autoconnect_timeout, HCI_ROLE_MASTER,
-			      direct_rpa);
+	conn = hci_connect_le(hdev, addr, addr_type, addr_resolved,
+			      BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout,
+			      HCI_ROLE_MASTER, direct_rpa);
 	if (!IS_ERR(conn)) {
 		/* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned
 		 * by higher layer that tried to connect, if no then
@@ -5562,7 +5568,7 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
 	struct discovery_state *d = &hdev->discovery;
 	struct smp_irk *irk;
 	struct hci_conn *conn;
-	bool match;
+	bool match, bdaddr_resolved;
 	u32 flags;
 	u8 *ptr;
 
@@ -5606,7 +5612,8 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
 	 * controller address.
 	 */
 	if (direct_addr) {
-		direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type);
+		direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type,
+						  &bdaddr_resolved);
 
 		/* Only resolvable random addresses are valid for these
 		 * kind of reports and others can be ignored.
@@ -5635,15 +5642,15 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
 		bdaddr_type = irk->addr_type;
 	}
 
-	bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type);
+	bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved);
 
 	/* Check if we have been requested to connect to this device.
 	 *
 	 * direct_addr is set only for directed advertising reports (it is NULL
 	 * for advertising reports) and is already verified to be RPA above.
 	 */
-	conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type,
-								direct_addr);
+	conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
+				     type, direct_addr);
 	if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
 		/* Store report for later inclusion by
 		 * mgmt_device_connected