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mptcp: call tcp_cleanup_rbuf on subflows

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That is needed to let the subflows announce promptly when new
space is available in the receive buffer.

tcp_cleanup_rbuf() is currently a static function, drop the
scope modifier and add a declaration in the TCP header.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paolo Abeni
2020-09-14 10:01:18 +02:00
committed by David S. Miller
parent d5f49190de
commit c76c695656
4 changed files with 11 additions and 1 deletions
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6
net/mptcp/protocol.c
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@ -515,6 +515,8 @@ static bool __mptcp_move_skbs_from_subflow(struct mptcp_sock *msk,
} while (more_data_avail);
*bytes += moved;
if (moved)
tcp_cleanup_rbuf(ssk, moved);
return done;
}
@ -1424,10 +1426,14 @@ static void mptcp_rcv_space_adjust(struct mptcp_sock *msk, int copied)
*/
mptcp_for_each_subflow(msk, subflow) {
struct sock *ssk;
bool slow;
ssk = mptcp_subflow_tcp_sock(subflow);
slow = lock_sock_fast(ssk);
WRITE_ONCE(ssk->sk_rcvbuf, rcvbuf);
tcp_sk(ssk)->window_clamp = window_clamp;
tcp_cleanup_rbuf(ssk, 1);
unlock_sock_fast(ssk, slow);
}
}
}