rcv_window_now   1568 net/ipv4/tcp.c 		__u32 rcv_window_now = tcp_receive_window(tp);
rcv_window_now   1571 net/ipv4/tcp.c 		if (2*rcv_window_now <= tp->window_clamp) {
rcv_window_now   1579 net/ipv4/tcp.c 			if (new_window && new_window >= 2 * rcv_window_now)