111 	int reuse = sock_net(sk)->ipv4.sysctl_tcp_tw_reuse;  in tcp_twsk_unique()
210 	struct inet_timewait_death_row *tcp_death_row = &sock_net(sk)->ipv4.tcp_death_row;  in tcp_v4_connect()
773 	ctl_sk = this_cpu_read(*net->ipv4.tcp_sk);  in tcp_v4_send_reset()
871 	ctl_sk = this_cpu_read(*net->ipv4.tcp_sk);  in tcp_v4_send_ack()
2603 	.sysctl_wmem_offset	= offsetof(struct net, ipv4.sysctl_tcp_wmem),
2604 	.sysctl_rmem_offset	= offsetof(struct net, ipv4.sysctl_tcp_rmem),
2624 	if (net->ipv4.tcp_congestion_control)  in tcp_sk_exit()
2625 		module_put(net->ipv4.tcp_congestion_control->owner);  in tcp_sk_exit()
2628 		inet_ctl_sock_destroy(*per_cpu_ptr(net->ipv4.tcp_sk, cpu));  in tcp_sk_exit()
2629 	free_percpu(net->ipv4.tcp_sk);  in tcp_sk_exit()
2636 	net->ipv4.tcp_sk = alloc_percpu(struct sock *);  in tcp_sk_init()
2637 	if (!net->ipv4.tcp_sk)  in tcp_sk_init()
2654 		*per_cpu_ptr(net->ipv4.tcp_sk, cpu) = sk;  in tcp_sk_init()
2657 	net->ipv4.sysctl_tcp_ecn = 2;  in tcp_sk_init()
2658 	net->ipv4.sysctl_tcp_ecn_fallback = 1;  in tcp_sk_init()
2660 	net->ipv4.sysctl_tcp_base_mss = TCP_BASE_MSS;  in tcp_sk_init()
2661 	net->ipv4.sysctl_tcp_min_snd_mss = TCP_MIN_SND_MSS;  in tcp_sk_init()
2662 	net->ipv4.sysctl_tcp_probe_threshold = TCP_PROBE_THRESHOLD;  in tcp_sk_init()
2663 	net->ipv4.sysctl_tcp_probe_interval = TCP_PROBE_INTERVAL;  in tcp_sk_init()
2664 	net->ipv4.sysctl_tcp_mtu_probe_floor = TCP_MIN_SND_MSS;  in tcp_sk_init()
2666 	net->ipv4.sysctl_tcp_keepalive_time = TCP_KEEPALIVE_TIME;  in tcp_sk_init()
2667 	net->ipv4.sysctl_tcp_keepalive_probes = TCP_KEEPALIVE_PROBES;  in tcp_sk_init()
2668 	net->ipv4.sysctl_tcp_keepalive_intvl = TCP_KEEPALIVE_INTVL;  in tcp_sk_init()
2670 	net->ipv4.sysctl_tcp_syn_retries = TCP_SYN_RETRIES;  in tcp_sk_init()
2671 	net->ipv4.sysctl_tcp_synack_retries = TCP_SYNACK_RETRIES;  in tcp_sk_init()
2672 	net->ipv4.sysctl_tcp_syncookies = 1;  in tcp_sk_init()
2673 	net->ipv4.sysctl_tcp_reordering = TCP_FASTRETRANS_THRESH;  in tcp_sk_init()
2674 	net->ipv4.sysctl_tcp_retries1 = TCP_RETR1;  in tcp_sk_init()
2675 	net->ipv4.sysctl_tcp_retries2 = TCP_RETR2;  in tcp_sk_init()
2676 	net->ipv4.sysctl_tcp_orphan_retries = 0;  in tcp_sk_init()
2677 	net->ipv4.sysctl_tcp_fin_timeout = TCP_FIN_TIMEOUT;  in tcp_sk_init()
2678 	net->ipv4.sysctl_tcp_notsent_lowat = UINT_MAX;  in tcp_sk_init()
2679 	net->ipv4.sysctl_tcp_tw_reuse = 2;  in tcp_sk_init()
2682 	net->ipv4.tcp_death_row.sysctl_max_tw_buckets = cnt / 2;  in tcp_sk_init()
2683 	net->ipv4.tcp_death_row.hashinfo = &tcp_hashinfo;  in tcp_sk_init()
2685 	net->ipv4.sysctl_max_syn_backlog = max(128, cnt / 128);  in tcp_sk_init()
2686 	net->ipv4.sysctl_tcp_sack = 1;  in tcp_sk_init()
2687 	net->ipv4.sysctl_tcp_window_scaling = 1;  in tcp_sk_init()
2688 	net->ipv4.sysctl_tcp_timestamps = 1;  in tcp_sk_init()
2689 	net->ipv4.sysctl_tcp_early_retrans = 3;  in tcp_sk_init()
2690 	net->ipv4.sysctl_tcp_recovery = TCP_RACK_LOSS_DETECTION;  in tcp_sk_init()
2691 	net->ipv4.sysctl_tcp_slow_start_after_idle = 1; /* By default, RFC2861 behavior.  */  in tcp_sk_init()
2692 	net->ipv4.sysctl_tcp_retrans_collapse = 1;  in tcp_sk_init()
2693 	net->ipv4.sysctl_tcp_max_reordering = 300;  in tcp_sk_init()
2694 	net->ipv4.sysctl_tcp_dsack = 1;  in tcp_sk_init()
2695 	net->ipv4.sysctl_tcp_app_win = 31;  in tcp_sk_init()
2696 	net->ipv4.sysctl_tcp_adv_win_scale = 1;  in tcp_sk_init()
2697 	net->ipv4.sysctl_tcp_frto = 2;  in tcp_sk_init()
2698 	net->ipv4.sysctl_tcp_moderate_rcvbuf = 1;  in tcp_sk_init()
2703 	net->ipv4.sysctl_tcp_tso_win_divisor = 3;  in tcp_sk_init()
2705 	net->ipv4.sysctl_tcp_limit_output_bytes = 16 * 65536;  in tcp_sk_init()
2707 	net->ipv4.sysctl_tcp_challenge_ack_limit = 1000;  in tcp_sk_init()
2708 	net->ipv4.sysctl_tcp_min_tso_segs = 2;  in tcp_sk_init()
2709 	net->ipv4.sysctl_tcp_min_rtt_wlen = 300;  in tcp_sk_init()
2710 	net->ipv4.sysctl_tcp_autocorking = 1;  in tcp_sk_init()
2711 	net->ipv4.sysctl_tcp_invalid_ratelimit = HZ/2;  in tcp_sk_init()
2712 	net->ipv4.sysctl_tcp_pacing_ss_ratio = 200;  in tcp_sk_init()
2713 	net->ipv4.sysctl_tcp_pacing_ca_ratio = 120;  in tcp_sk_init()
2715 		memcpy(net->ipv4.sysctl_tcp_rmem,  in tcp_sk_init()
2716 		       init_net.ipv4.sysctl_tcp_rmem,  in tcp_sk_init()
2717 		       sizeof(init_net.ipv4.sysctl_tcp_rmem));  in tcp_sk_init()
2718 		memcpy(net->ipv4.sysctl_tcp_wmem,  in tcp_sk_init()
2719 		       init_net.ipv4.sysctl_tcp_wmem,  in tcp_sk_init()
2720 		       sizeof(init_net.ipv4.sysctl_tcp_wmem));  in tcp_sk_init()
2722 	net->ipv4.sysctl_tcp_comp_sack_delay_ns = NSEC_PER_MSEC;  in tcp_sk_init()
2723 	net->ipv4.sysctl_tcp_comp_sack_nr = 44;  in tcp_sk_init()
2724 	net->ipv4.sysctl_tcp_fastopen = TFO_CLIENT_ENABLE;  in tcp_sk_init()
2725 	spin_lock_init(&net->ipv4.tcp_fastopen_ctx_lock);  in tcp_sk_init()
2726 	net->ipv4.sysctl_tcp_fastopen_blackhole_timeout = 60 * 60;  in tcp_sk_init()
2727 	atomic_set(&net->ipv4.tfo_active_disable_times, 0);  in tcp_sk_init()
2731 	    try_module_get(init_net.ipv4.tcp_congestion_control->owner))  in tcp_sk_init()
2732 		net->ipv4.tcp_congestion_control = init_net.ipv4.tcp_congestion_control;  in tcp_sk_init()
2734 		net->ipv4.tcp_congestion_control = &tcp_reno;  in tcp_sk_init()