tree f3396ee4df16edd93595e8fc878cfad1421b67bb
parent 0db19b850468a24b70d8471f5ebe71f0a035bbab
author Yuchung Cheng <ycheng@google.com> 1447899450 -0800
committer David S. Miller <davem@davemloft.net> 1448034672 -0500

tcp: disable Fast Open on timeouts after handshake

Some middle-boxes black-hole the data after the Fast Open handshake
(https://www.ietf.org/proceedings/94/slides/slides-94-tcpm-13.pdf).
The exact reason is unknown. The work-around is to disable Fast Open
temporarily after multiple recurring timeouts with few or no data
delivered in the established state.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Christoph Paasch <cpaasch@apple.com>
Signed-off-by: David S. Miller <davem@davemloft.net>