halfcwnd         1802 net/ipv4/tcp_output.c 	u32 in_flight, cwnd, halfcwnd;
halfcwnd         1817 net/ipv4/tcp_output.c 	halfcwnd = max(cwnd >> 1, 1U);
halfcwnd         1818 net/ipv4/tcp_output.c 	return min(halfcwnd, cwnd - in_flight);