tfo_da_times 496 net/ipv4/tcp_fastopen.c int tfo_da_times = atomic_read(&sock_net(sk)->ipv4.tfo_active_disable_times); tfo_da_times 500 net/ipv4/tcp_fastopen.c if (!tfo_da_times) tfo_da_times 504 net/ipv4/tcp_fastopen.c multiplier = 1 << min(tfo_da_times - 1, 6);