This patch adds a TCP_FASTOPEN socket option to get a max backlog on its
listener to getsockopt().
Signed-off-by: NKenjiro Nakayama <nakayamakenjiro@gmail.com>
Acked-by: NNeal Cardwell <ncardwell@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>