tree aac7beeee2620d985d3462ea0352ef538d315472
parent f9ca194dbe2743d87ef36c6f66e12720011c9860
author Jacky Cheung <jackyc@google.com> 1469818167 -0700
committer Andre Eisenbach <eisenbach@google.com> 1476987432 +0000

Gradually increase the level of authentication on failed GATT operations.

When lower layer returns insufficient authentication or insufficient
encryption on various GATT operations, gradually retry with increased
authentication level first to AUTHENTICATION_NO_MITM, then
AUTHENTICATION_MITM.

Change-Id: I68335cf7451aeaf49c227d604f69cb329d117d08