67 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_event_new_data_sent()  local
80 	if (!prior_packets || 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()
1246 	const struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_transmit_skb()  local
1384 	INDIRECT_CALL_INET(icsk->icsk_af_ops->send_check,  in __tcp_transmit_skb()
1415 	err = INDIRECT_CALL_INET(icsk->icsk_af_ops->queue_xmit,  in __tcp_transmit_skb()
1698 	const struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_mtu_to_mss()  local
1704 	mss_now = pmtu - icsk->icsk_af_ops->net_header_len - sizeof(struct tcphdr);  in __tcp_mtu_to_mss()
1707 	if (icsk->icsk_af_ops->net_frag_header_len) {  in __tcp_mtu_to_mss()
1711 			mss_now -= icsk->icsk_af_ops->net_frag_header_len;  in __tcp_mtu_to_mss()
1719 	mss_now -= icsk->icsk_ext_hdr_len;  in __tcp_mtu_to_mss()
1740 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mss_to_mtu()  local
1745 	      icsk->icsk_ext_hdr_len +  in tcp_mss_to_mtu()
1746 	      icsk->icsk_af_ops->net_header_len;  in tcp_mss_to_mtu()
1749 	if (icsk->icsk_af_ops->net_frag_header_len) {  in tcp_mss_to_mtu()
1753 			mtu += icsk->icsk_af_ops->net_frag_header_len;  in tcp_mss_to_mtu()
1763 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtup_init()  local
1766 	icsk->icsk_mtup.enabled = READ_ONCE(net->ipv4.sysctl_tcp_mtu_probing) > 1;  in tcp_mtup_init()
1767 	icsk->icsk_mtup.search_high = tp->rx_opt.mss_clamp + sizeof(struct tcphdr) +  in tcp_mtup_init()
1768 			       icsk->icsk_af_ops->net_header_len;  in tcp_mtup_init()
1769 	icsk->icsk_mtup.search_low = tcp_mss_to_mtu(sk, READ_ONCE(net->ipv4.sysctl_tcp_base_mss));  in tcp_mtup_init()
1770 	icsk->icsk_mtup.probe_size = 0;  in tcp_mtup_init()
1771 	if (icsk->icsk_mtup.enabled)  in tcp_mtup_init()
1772 		icsk->icsk_mtup.probe_timestamp = tcp_jiffies32;  in tcp_mtup_init()
1801 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_sync_mss()  local
1804 	if (icsk->icsk_mtup.search_high > pmtu)  in tcp_sync_mss()
1805 		icsk->icsk_mtup.search_high = pmtu;  in tcp_sync_mss()
1811 	icsk->icsk_pmtu_cookie = pmtu;  in tcp_sync_mss()
1812 	if (icsk->icsk_mtup.enabled)  in tcp_sync_mss()
1813 		mss_now = min(mss_now, tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_low));  in tcp_sync_mss()
2184 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_tso_should_defer()  local
2191 	if (icsk->icsk_ca_state >= TCP_CA_Recovery)  in tcp_tso_should_defer()
2283 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtu_check_reprobe()  local
2290 	delta = tcp_jiffies32 - icsk->icsk_mtup.probe_timestamp;  in tcp_mtu_check_reprobe()
2295 		icsk->icsk_mtup.probe_size = 0;  in tcp_mtu_check_reprobe()
2296 		icsk->icsk_mtup.search_high = tp->rx_opt.mss_clamp +  in tcp_mtu_check_reprobe()
2298 			icsk->icsk_af_ops->net_header_len;  in tcp_mtu_check_reprobe()
2299 		icsk->icsk_mtup.search_low = tcp_mss_to_mtu(sk, mss);  in tcp_mtu_check_reprobe()
2302 		icsk->icsk_mtup.probe_timestamp = tcp_jiffies32;  in tcp_mtu_check_reprobe()
2388 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtu_probe()  local
2403 	if (likely(!icsk->icsk_mtup.enabled ||  in tcp_mtu_probe()
2404 		   icsk->icsk_mtup.probe_size ||  in tcp_mtu_probe()
2415 	probe_size = tcp_mtu_to_mss(sk, (icsk->icsk_mtup.search_high +  in tcp_mtu_probe()
2416 				    icsk->icsk_mtup.search_low) >> 1);  in tcp_mtu_probe()
2418 	interval = icsk->icsk_mtup.search_high - icsk->icsk_mtup.search_low;  in tcp_mtu_probe()
2423 	if (probe_size > tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_high) ||  in tcp_mtu_probe()
2516 		icsk->icsk_mtup.probe_size = tcp_mss_to_mtu(sk, nskb->len);  in tcp_mtu_probe()
2801 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_schedule_loss_probe()  local
2818 	    (icsk->icsk_ca_state != TCP_CA_Open &&  in tcp_schedule_loss_probe()
2819 	     icsk->icsk_ca_state != TCP_CA_CWR))  in tcp_schedule_loss_probe()
3018 	struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_select_window()  local
3027 	int mss = icsk->icsk_ack.rcv_mss;  in __tcp_select_window()
3052 		icsk->icsk_ack.quick = 0;  in __tcp_select_window()
3111 		icsk->icsk_ack.quick = 0;  in __tcp_select_window()
3253 	struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_retransmit_skb()  local
3260 	if (icsk->icsk_mtup.probe_size)  in __tcp_retransmit_skb()
3261 		icsk->icsk_mtup.probe_size = 0;  in __tcp_retransmit_skb()
3403 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_xmit_retransmit_queue()  local
3444 			if (icsk->icsk_ca_state != TCP_CA_Loss)  in tcp_xmit_retransmit_queue()
3465 		    icsk->icsk_pending != ICSK_TIME_REO_TIMEOUT)  in tcp_xmit_retransmit_queue()
3740 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_ca_dst_init()  local
3750 		bpf_module_put(icsk->icsk_ca_ops, icsk->icsk_ca_ops->owner);  in tcp_ca_dst_init()
3751 		icsk->icsk_ca_dst_locked = tcp_ca_dst_locked(dst);  in tcp_ca_dst_init()
3752 		icsk->icsk_ca_ops = ca;  in tcp_ca_dst_init()
3851 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_send_syn_data()  local
3868 	tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);  in tcp_send_syn_data()
3870 	space = __tcp_mtu_to_mss(sk, icsk->icsk_pmtu_cookie) -  in tcp_send_syn_data()
4006 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_send_delayed_ack()  local
4007 	int ato = icsk->icsk_ack.ato;  in tcp_send_delayed_ack()
4015 		    (icsk->icsk_ack.pending & ICSK_ACK_PUSHED))  in tcp_send_delayed_ack()
4041 	if (icsk->icsk_ack.pending & ICSK_ACK_TIMER) {  in tcp_send_delayed_ack()
4043 		if (time_before_eq(icsk->icsk_ack.timeout, jiffies + (ato >> 2))) {  in tcp_send_delayed_ack()
4048 		if (!time_before(timeout, icsk->icsk_ack.timeout))  in tcp_send_delayed_ack()
4049 			timeout = icsk->icsk_ack.timeout;  in tcp_send_delayed_ack()
4051 	icsk->icsk_ack.pending |= ICSK_ACK_SCHED | ICSK_ACK_TIMER;  in tcp_send_delayed_ack()
4052 	icsk->icsk_ack.timeout = timeout;  in tcp_send_delayed_ack()
4053 	sk_reset_timer(sk, &icsk->icsk_delack_timer, timeout);  in tcp_send_delayed_ack()
4072 		struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_send_ack()  local
4075 		delay = TCP_DELACK_MAX << icsk->icsk_ack.retry;  in __tcp_send_ack()
4077 			icsk->icsk_ack.retry++;  in __tcp_send_ack()
4079 		icsk->icsk_ack.ato = TCP_ATO_MIN;  in __tcp_send_ack()
4196 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_send_probe0()  local
4206 		icsk->icsk_probes_out = 0;  in tcp_send_probe0()
4207 		icsk->icsk_backoff = 0;  in tcp_send_probe0()
4208 		icsk->icsk_probes_tstamp = 0;  in tcp_send_probe0()
4212 	icsk->icsk_probes_out++;  in tcp_send_probe0()
4214 		if (icsk->icsk_backoff < READ_ONCE(net->ipv4.sysctl_tcp_retries2))  in tcp_send_probe0()
4215 			icsk->icsk_backoff++;  in tcp_send_probe0()