From: Paolo Abeni <pabeni(a)redhat.com>
Date: Mon, 11 May 2020 19:35:21 +0200

> On Mon, 2020-05-11 at 09:24 -0700, Christoph Paasch wrote:
>> When the other MPTCP-peer uses 32-bit data-sequence numbers, we rely on
>> map_seq to indicate how to expand to a 64-bit data-sequence number in
>> expand_seq() when receiving data.
>> 
>> For new subflows, this field is not initialized, thus results in an
>> "invalid" mapping being discarded.
>> 
>> Fix this by initializing map_seq upon subflow establishment time.
>> 
>> Fixes: f296234c98a8 ("mptcp: Add handling of incoming MP_JOIN requests")
>> Signed-off-by: Christoph Paasch <cpaasch(a)apple.com>
 ...
> Reviewed-by: Paolo Abeni <pabeni(a)redhat.com>

Applied, thanks.