net->ipv4.sysctl_tcp_timestamps = 1;
net->ipv4.sysctl_tcp_early_retrans = 3;
net->ipv4.sysctl_tcp_recovery = TCP_RACK_LOSS_DETECTION;
+ net->ipv4.sysctl_tcp_slow_start_after_idle = 1; /* By default, RFC2861 behavior. */
net->ipv4.sysctl_tcp_fastopen = TFO_CLIENT_ENABLE;
spin_lock_init(&net->ipv4.tcp_fastopen_ctx_lock);