TCP_ACTION_FIN   1709 net/ipv4/tcp.c   /* TCP_ESTABLISHED	*/ TCP_FIN_WAIT1 | TCP_ACTION_FIN,
TCP_ACTION_FIN   1711 net/ipv4/tcp.c   /* TCP_SYN_RECV	*/ TCP_FIN_WAIT1 | TCP_ACTION_FIN,
TCP_ACTION_FIN   1716 net/ipv4/tcp.c   /* TCP_CLOSE_WAIT	*/ TCP_LAST_ACK  | TCP_ACTION_FIN,
TCP_ACTION_FIN   1729 net/ipv4/tcp.c 	return next & TCP_ACTION_FIN;