74 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_event_new_data_sent()  local
82 	if (!prior_packets || icsk->icsk_pending == ICSK_TIME_EARLY_RETRANS ||  in tcp_event_new_data_sent()
83 	    icsk->icsk_pending == ICSK_TIME_LOSS_PROBE) {  in tcp_event_new_data_sent()
164 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_event_data_sent()  local
175 	if ((u32)(now - icsk->icsk_ack.lrcvtime) < icsk->icsk_ack.ato)  in tcp_event_data_sent()
176 		icsk->icsk_ack.pingpong = 1;  in tcp_event_data_sent()
906 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_transmit_skb()  local
1004 	icsk->icsk_af_ops->send_check(sk, skb);  in tcp_transmit_skb()
1028 	err = icsk->icsk_af_ops->queue_xmit(sk, skb, &inet->cork.fl);  in tcp_transmit_skb()
1288 	const struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_mtu_to_mss()  local
1294 	mss_now = pmtu - icsk->icsk_af_ops->net_header_len - sizeof(struct tcphdr);  in __tcp_mtu_to_mss()
1297 	if (icsk->icsk_af_ops->net_frag_header_len) {  in __tcp_mtu_to_mss()
1301 			mss_now -= icsk->icsk_af_ops->net_frag_header_len;  in __tcp_mtu_to_mss()
1309 	mss_now -= icsk->icsk_ext_hdr_len;  in __tcp_mtu_to_mss()
1329 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mss_to_mtu()  local
1334 	      icsk->icsk_ext_hdr_len +  in tcp_mss_to_mtu()
1335 	      icsk->icsk_af_ops->net_header_len;  in tcp_mss_to_mtu()
1338 	if (icsk->icsk_af_ops->net_frag_header_len) {  in tcp_mss_to_mtu()
1342 			mtu += icsk->icsk_af_ops->net_frag_header_len;  in tcp_mss_to_mtu()
1351 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtup_init()  local
1354 	icsk->icsk_mtup.enabled = net->ipv4.sysctl_tcp_mtu_probing > 1;  in tcp_mtup_init()
1355 	icsk->icsk_mtup.search_high = tp->rx_opt.mss_clamp + sizeof(struct tcphdr) +  in tcp_mtup_init()
1356 			       icsk->icsk_af_ops->net_header_len;  in tcp_mtup_init()
1357 	icsk->icsk_mtup.search_low = tcp_mss_to_mtu(sk, net->ipv4.sysctl_tcp_base_mss);  in tcp_mtup_init()
1358 	icsk->icsk_mtup.probe_size = 0;  in tcp_mtup_init()
1359 	if (icsk->icsk_mtup.enabled)  in tcp_mtup_init()
1360 		icsk->icsk_mtup.probe_timestamp = tcp_time_stamp;  in tcp_mtup_init()
1389 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_sync_mss()  local
1392 	if (icsk->icsk_mtup.search_high > pmtu)  in tcp_sync_mss()
1393 		icsk->icsk_mtup.search_high = pmtu;  in tcp_sync_mss()
1399 	icsk->icsk_pmtu_cookie = pmtu;  in tcp_sync_mss()
1400 	if (icsk->icsk_mtup.enabled)  in tcp_sync_mss()
1401 		mss_now = min(mss_now, tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_low));  in tcp_sync_mss()
1758 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_tso_should_defer()  local
1768 	if (icsk->icsk_ca_state >= TCP_CA_Recovery)  in tcp_tso_should_defer()
1836 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtu_check_reprobe()  local
1843 	delta = tcp_time_stamp - icsk->icsk_mtup.probe_timestamp;  in tcp_mtu_check_reprobe()
1848 		icsk->icsk_mtup.probe_size = 0;  in tcp_mtu_check_reprobe()
1849 		icsk->icsk_mtup.search_high = tp->rx_opt.mss_clamp +  in tcp_mtu_check_reprobe()
1851 			icsk->icsk_af_ops->net_header_len;  in tcp_mtu_check_reprobe()
1852 		icsk->icsk_mtup.search_low = tcp_mss_to_mtu(sk, mss);  in tcp_mtu_check_reprobe()
1855 		icsk->icsk_mtup.probe_timestamp = tcp_time_stamp;  in tcp_mtu_check_reprobe()
1871 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtu_probe()  local
1885 	if (!icsk->icsk_mtup.enabled ||  in tcp_mtu_probe()
1886 	    icsk->icsk_mtup.probe_size ||  in tcp_mtu_probe()
1897 	probe_size = tcp_mtu_to_mss(sk, (icsk->icsk_mtup.search_high +  in tcp_mtu_probe()
1898 				    icsk->icsk_mtup.search_low) >> 1);  in tcp_mtu_probe()
1900 	interval = icsk->icsk_mtup.search_high - icsk->icsk_mtup.search_low;  in tcp_mtu_probe()
1905 	if (probe_size > tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_high) ||  in tcp_mtu_probe()
1996 		icsk->icsk_mtup.probe_size = tcp_mss_to_mtu(sk, nskb->len);  in tcp_mtu_probe()
2148 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_schedule_loss_probe()  local
2153 	if (WARN_ON(icsk->icsk_pending == ICSK_TIME_EARLY_RETRANS))  in tcp_schedule_loss_probe()
2156 	if (WARN_ON(icsk->icsk_pending == ICSK_TIME_LOSS_PROBE)) {  in tcp_schedule_loss_probe()
2167 	if (icsk->icsk_pending != ICSK_TIME_RETRANS)  in tcp_schedule_loss_probe()
2369 	struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_select_window()  local
2377 	int mss = icsk->icsk_ack.rcv_mss;  in __tcp_select_window()
2387 		icsk->icsk_ack.quick = 0;  in __tcp_select_window()
2558 	struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_retransmit_skb()  local
2563 	if (icsk->icsk_mtup.probe_size) {  in __tcp_retransmit_skb()
2564 		icsk->icsk_mtup.probe_size = 0;  in __tcp_retransmit_skb()
2682 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_can_forward_retransmit()  local
2686 	if (icsk->icsk_ca_state != TCP_CA_Recovery)  in tcp_can_forward_retransmit()
2717 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_xmit_retransmit_queue()  local
2785 			if (icsk->icsk_ca_state != TCP_CA_Loss)  in tcp_xmit_retransmit_queue()
3041 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_ca_dst_init()  local
3051 		module_put(icsk->icsk_ca_ops->owner);  in tcp_ca_dst_init()
3052 		icsk->icsk_ca_dst_locked = tcp_ca_dst_locked(dst);  in tcp_ca_dst_init()
3053 		icsk->icsk_ca_ops = ca;  in tcp_ca_dst_init()
3290 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_send_delayed_ack()  local
3291 	int ato = icsk->icsk_ack.ato;  in tcp_send_delayed_ack()
3300 		if (icsk->icsk_ack.pingpong ||  in tcp_send_delayed_ack()
3301 		    (icsk->icsk_ack.pending & ICSK_ACK_PUSHED))  in tcp_send_delayed_ack()
3325 	if (icsk->icsk_ack.pending & ICSK_ACK_TIMER) {  in tcp_send_delayed_ack()
3329 		if (icsk->icsk_ack.blocked ||  in tcp_send_delayed_ack()
3330 		    time_before_eq(icsk->icsk_ack.timeout, jiffies + (ato >> 2))) {  in tcp_send_delayed_ack()
3335 		if (!time_before(timeout, icsk->icsk_ack.timeout))  in tcp_send_delayed_ack()
3336 			timeout = icsk->icsk_ack.timeout;  in tcp_send_delayed_ack()
3338 	icsk->icsk_ack.pending |= ICSK_ACK_SCHED | ICSK_ACK_TIMER;  in tcp_send_delayed_ack()
3339 	icsk->icsk_ack.timeout = timeout;  in tcp_send_delayed_ack()
3340 	sk_reset_timer(sk, &icsk->icsk_delack_timer, timeout);  in tcp_send_delayed_ack()
3474 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_send_probe0()  local
3483 		icsk->icsk_probes_out = 0;  in tcp_send_probe0()
3484 		icsk->icsk_backoff = 0;  in tcp_send_probe0()
3489 		if (icsk->icsk_backoff < sysctl_tcp_retries2)  in tcp_send_probe0()
3490 			icsk->icsk_backoff++;  in tcp_send_probe0()
3491 		icsk->icsk_probes_out++;  in tcp_send_probe0()
3500 		if (!icsk->icsk_probes_out)  in tcp_send_probe0()
3501 			icsk->icsk_probes_out = 1;  in tcp_send_probe0()