Re: [PATCH net-next v3] mptcp: Wake up MPTCP worker when DATA_FIN found on a TCP FIN packet

[David Miller]

From: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>
Date: Mon, 21 Sep 2020 16:57:58 +0200

> From: Mat Martineau <mathew.j.martineau@xxxxxxxxxxxxxxx>
> 
> When receiving a DATA_FIN MPTCP option on a TCP FIN packet, the DATA_FIN
> information would be stored but the MPTCP worker did not get
> scheduled. In turn, the MPTCP socket state would remain in
> TCP_ESTABLISHED and no blocked operations would be awakened.
> 
> TCP FIN packets are seen by the MPTCP socket when moving skbs out of the
> subflow receive queues, so schedule the MPTCP worker when a skb with
> DATA_FIN but no data payload is moved from a subflow queue. Other cases
> (DATA_FIN on a bare TCP ACK or on a packet with data payload) are
> already handled.
> 
> Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/84
> Fixes: 43b54c6ee382 ("mptcp: Use full MPTCP-level disconnect state machine")
> Acked-by: Paolo Abeni <pabeni@xxxxxxxxxx>
> Signed-off-by: Mat Martineau <mathew.j.martineau@xxxxxxxxxxxxxxx>
> Signed-off-by: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>

Applied to 'net', thanks.