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authorJohan Hedberg <johan.hedberg@intel.com>2014-04-11 12:02:32 -0700
committerJiri Slaby <jslaby@suse.cz>2014-07-02 12:06:44 +0200
commit849dc4c5ccc4348ed2795876b3d85a52b326aef4 (patch)
tree420a470e3ac1f5876e78014b75eb7b2679876ebd /net/bluetooth
parent442a395f704df155cbd221ca1f201cb6eaf7e050 (diff)
Bluetooth: Fix redundant encryption request for reauthentication
commit 09da1f3463eb81d59685df723b1c5950b7570340 upstream. When we're performing reauthentication (in order to elevate the security level from an unauthenticated key to an authenticated one) we do not need to issue any encryption command once authentication completes. Since the trigger for the encryption HCI command is the ENCRYPT_PEND flag this flag should not be set in this scenario. Instead, the REAUTH_PEND flag takes care of all necessary steps for reauthentication. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Cc: stable@vger.kernel.org Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'net/bluetooth')
-rw-r--r--net/bluetooth/hci_conn.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index f0817121ec5e..312915c23930 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -690,14 +690,17 @@ static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
struct hci_cp_auth_requested cp;
- /* encrypt must be pending if auth is also pending */
- set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
-
cp.handle = cpu_to_le16(conn->handle);
hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED,
sizeof(cp), &cp);
+
+ /* If we're already encrypted set the REAUTH_PEND flag,
+ * otherwise set the ENCRYPT_PEND.
+ */
if (conn->key_type != 0xff)
set_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
+ else
+ set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
}
return 0;