Bluetooth: Add mgmt_auth_failed event

To properly track bonding completion an event to indicate authentication
failure is needed. This event will be sent whenever an authentication
complete HCI event with a non-zero status comes. It will also be sent
when we're acting in acceptor role for SSP authentication in which case
the controller will send a Simple Pairing Complete event.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

1 files changed, 16 insertions, 3 deletions

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 604c7b5fee97..3fbfa50c2bff 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1424,8 +1424,10 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s
                 if (!ev->status) {
                         conn->link_mode |= HCI_LM_AUTH;
                         conn->sec_level = conn->pending_sec_level;
-                } else
+                } else {
+                        mgmt_auth_failed(hdev->id, &conn->dst, ev->status);
                         conn->sec_level = BT_SECURITY_LOW;
+                }
 
                 clear_bit(HCI_CONN_AUTH_PEND, &conn->pend);
 
@@ -2418,9 +2420,20 @@ static inline void hci_simple_pair_complete_evt(struct hci_dev *hdev, struct sk_
         hci_dev_lock(hdev);
 
         conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
-        if (conn)
-                hci_conn_put(conn);
+        if (!conn)
+                goto unlock;
+
+        /* To avoid duplicate auth_failed events to user space we check
+         * the HCI_CONN_AUTH_PEND flag which will be set if we
+         * initiated the authentication. A traditional auth_complete
+         * event gets always produced as initiator and is also mapped to
+         * the mgmt_auth_failed event */
+        if (!test_bit(HCI_CONN_AUTH_PEND, &conn->pend) && ev->status != 0)
+                mgmt_auth_failed(hdev->id, &conn->dst, ev->status);
 
+        hci_conn_put(conn);
+
+unlock:
         hci_dev_unlock(hdev);
 }