Bluetooth: Use general bonding whenever possible

When receiving incoming connection to specific services, always use
general bonding. This ensures that the link key gets stored and can be
used for further authentications.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 9 insertions, 14 deletions

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 2435e830ba6..7fc4c048b57 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -391,19 +391,14 @@ int hci_conn_check_link_mode(struct hci_conn *conn)
 EXPORT_SYMBOL(hci_conn_check_link_mode);
 
 /* Authenticate remote device */
-static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level)
+static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
 {
 	BT_DBG("conn %p", conn);
 
-	if (sec_level > conn->sec_level)
-		conn->link_mode &= ~HCI_LM_AUTH;
-
-	conn->sec_level = sec_level;
-
-	if (sec_level == BT_SECURITY_HIGH)
-		conn->auth_type |= 0x01;
-
-	if (conn->link_mode & HCI_LM_AUTH)
+	if (sec_level > conn->sec_level) {
+		conn->sec_level = sec_level;
+		conn->auth_type = auth_type;
+	} else if (conn->link_mode & HCI_LM_AUTH)
 		return 1;
 
 	if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) {
@@ -417,7 +412,7 @@ static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level)
 }
 
 /* Enable security */
-int hci_conn_security(struct hci_conn *conn, __u8 sec_level)
+int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
 {
 	BT_DBG("conn %p", conn);
 
@@ -426,18 +421,18 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level)
 
 	if (sec_level == BT_SECURITY_LOW) {
 		if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0)
-			return hci_conn_auth(conn, sec_level);
+			return hci_conn_auth(conn, sec_level, auth_type);
 		else
 			return 1;
 	}
 
 	if (conn->link_mode & HCI_LM_ENCRYPT)
-		return hci_conn_auth(conn, sec_level);
+		return hci_conn_auth(conn, sec_level, auth_type);
 
 	if (test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 		return 0;
 
-	if (hci_conn_auth(conn, sec_level)) {
+	if (hci_conn_auth(conn, sec_level, auth_type)) {
 		struct hci_cp_set_conn_encrypt cp;
 		cp.handle  = cpu_to_le16(conn->handle);
 		cp.encrypt = 1;