Bluetooth: Fix race condition with conn->sec_level

The conn->sec_level value is supposed to represent the current level of
security that the connection has. However, by assigning to it before
requesting authentication it will have the wrong value during the
authentication procedure. To fix this a pending_sec_level variable is
added which is used to track the desired security level while making
sure that sec_level always represents the current level of security.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index a29feb01854..d2cf8840769 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -184,6 +184,7 @@ struct hci_conn {
         __u32            link_mode;
         __u8             auth_type;
         __u8             sec_level;
+        __u8             pending_sec_level;
         __u8             power_save;
         __u16            disc_timeout;
         unsigned long    pend;