mptcp: Only use subflow EOF signaling on fallback connections

The MPTCP state machine handles disconnections on non-fallback connections,
but the mptcp_sock still needs to get notified when fallback subflows
disconnect.

Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 7ab2a52..1c8482b 100644 (file)
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -1159,7 +1159,8 @@ static void subflow_state_change(struct sock *sk)
        if (mptcp_subflow_data_available(sk))
                mptcp_data_ready(parent, sk);
 
-       if (!(parent->sk_shutdown & RCV_SHUTDOWN) &&
+       if (__mptcp_check_fallback(mptcp_sk(parent)) &&
+           !(parent->sk_shutdown & RCV_SHUTDOWN) &&
            !subflow->rx_eof && subflow_is_done(sk)) {
                subflow->rx_eof = 1;
                mptcp_subflow_eof(parent);