Bluetooth: When encryption is dropped, do not send RFCOMM packets

During a role change with pre-Bluetooth 2.1 devices, the remote side drops
the encryption of the RFCOMM connection. We allow a grace period for the
encryption to be re-established, before dropping the connection. During
this grace period, the RFCOMM_SEC_PENDING flag is set. Check this flag
before sending RFCOMM packets.

Signed-off-by: Jaikumar Ganesh <jaikumar@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index ad0e25a21832..3717c25ba33a 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -1749,6 +1749,9 @@ static inline void rfcomm_process_dlcs(struct rfcomm_session *s)
                         continue;
                 }
 
+                if (test_bit(RFCOMM_SEC_PENDING, &d->flags))
+                        continue;
+
                 if (test_bit(RFCOMM_TX_THROTTLED, &s->flags))
                         continue;