Merge branch 'mptcp-Connection-and-accounting-fixes'

Merge branch 'mptcp-Connection-and-accounting-fixes'

Mat Martineau says:

====================
mptcp: Connection and accounting fixes

Here are some miscellaneous fixes for MPTCP:

Patch 1 modifies an MPTCP hash so it doesn't depend on one of skb->dev
and skb->sk being non-NULL.

Patch 2 removes an extra destructor call when rejecting a join due to
port mismatch.

Patches 3 and 5 more cleanly handle error conditions with MP_JOIN and
syncookies, and update a related self test.

Patch 4 makes sure packets that trigger a subflow TCP reset during MPTCP
option header processing are correctly dropped.

Patch 6 addresses a rmem accounting issue that could keep packets in
subflow receive buffers longer than necessary, delaying MPTCP-level
ACKs.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>