54 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_event_new_data_sent()  local
64 	if (!prior_packets || icsk->icsk_pending == ICSK_TIME_LOSS_PROBE)  in tcp_event_new_data_sent()
147 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_event_data_sent()  local
158 	if ((u32)(now - icsk->icsk_ack.lrcvtime) < icsk->icsk_ack.ato)  in tcp_event_data_sent()
159 		icsk->icsk_ack.pingpong = 1;  in tcp_event_data_sent()
1019 	const struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_transmit_skb()  local
1131 	icsk->icsk_af_ops->send_check(sk, skb);  in __tcp_transmit_skb()
1159 	err = icsk->icsk_af_ops->queue_xmit(sk, skb, &inet->cork.fl);  in __tcp_transmit_skb()
1436 	const struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_mtu_to_mss()  local
1442 	mss_now = pmtu - icsk->icsk_af_ops->net_header_len - sizeof(struct tcphdr);  in __tcp_mtu_to_mss()
1445 	if (icsk->icsk_af_ops->net_frag_header_len) {  in __tcp_mtu_to_mss()
1449 			mss_now -= icsk->icsk_af_ops->net_frag_header_len;  in __tcp_mtu_to_mss()
1457 	mss_now -= icsk->icsk_ext_hdr_len;  in __tcp_mtu_to_mss()
1477 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mss_to_mtu()  local
1482 	      icsk->icsk_ext_hdr_len +  in tcp_mss_to_mtu()
1483 	      icsk->icsk_af_ops->net_header_len;  in tcp_mss_to_mtu()
1486 	if (icsk->icsk_af_ops->net_frag_header_len) {  in tcp_mss_to_mtu()
1490 			mtu += icsk->icsk_af_ops->net_frag_header_len;  in tcp_mss_to_mtu()
1500 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtup_init()  local
1503 	icsk->icsk_mtup.enabled = net->ipv4.sysctl_tcp_mtu_probing > 1;  in tcp_mtup_init()
1504 	icsk->icsk_mtup.search_high = tp->rx_opt.mss_clamp + sizeof(struct tcphdr) +  in tcp_mtup_init()
1505 			       icsk->icsk_af_ops->net_header_len;  in tcp_mtup_init()
1506 	icsk->icsk_mtup.search_low = tcp_mss_to_mtu(sk, net->ipv4.sysctl_tcp_base_mss);  in tcp_mtup_init()
1507 	icsk->icsk_mtup.probe_size = 0;  in tcp_mtup_init()
1508 	if (icsk->icsk_mtup.enabled)  in tcp_mtup_init()
1509 		icsk->icsk_mtup.probe_timestamp = tcp_jiffies32;  in tcp_mtup_init()
1538 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_sync_mss()  local
1541 	if (icsk->icsk_mtup.search_high > pmtu)  in tcp_sync_mss()
1542 		icsk->icsk_mtup.search_high = pmtu;  in tcp_sync_mss()
1548 	icsk->icsk_pmtu_cookie = pmtu;  in tcp_sync_mss()
1549 	if (icsk->icsk_mtup.enabled)  in tcp_sync_mss()
1550 		mss_now = min(mss_now, tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_low));  in tcp_sync_mss()
1907 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_tso_should_defer()  local
1916 	if (icsk->icsk_ca_state >= TCP_CA_Recovery)  in tcp_tso_should_defer()
1987 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtu_check_reprobe()  local
1994 	delta = tcp_jiffies32 - icsk->icsk_mtup.probe_timestamp;  in tcp_mtu_check_reprobe()
1999 		icsk->icsk_mtup.probe_size = 0;  in tcp_mtu_check_reprobe()
2000 		icsk->icsk_mtup.search_high = tp->rx_opt.mss_clamp +  in tcp_mtu_check_reprobe()
2002 			icsk->icsk_af_ops->net_header_len;  in tcp_mtu_check_reprobe()
2003 		icsk->icsk_mtup.search_low = tcp_mss_to_mtu(sk, mss);  in tcp_mtu_check_reprobe()
2006 		icsk->icsk_mtup.probe_timestamp = tcp_jiffies32;  in tcp_mtu_check_reprobe()
2039 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtu_probe()  local
2054 	if (likely(!icsk->icsk_mtup.enabled ||  in tcp_mtu_probe()
2055 		   icsk->icsk_mtup.probe_size ||  in tcp_mtu_probe()
2066 	probe_size = tcp_mtu_to_mss(sk, (icsk->icsk_mtup.search_high +  in tcp_mtu_probe()
2067 				    icsk->icsk_mtup.search_low) >> 1);  in tcp_mtu_probe()
2069 	interval = icsk->icsk_mtup.search_high - icsk->icsk_mtup.search_low;  in tcp_mtu_probe()
2074 	if (probe_size > tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_high) ||  in tcp_mtu_probe()
2165 		icsk->icsk_mtup.probe_size = tcp_mss_to_mtu(sk, nskb->len);  in tcp_mtu_probe()
2398 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_schedule_loss_probe()  local
2415 	    (icsk->icsk_ca_state != TCP_CA_Open &&  in tcp_schedule_loss_probe()
2416 	     icsk->icsk_ca_state != TCP_CA_CWR))  in tcp_schedule_loss_probe()
2605 	struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_select_window()  local
2613 	int mss = icsk->icsk_ack.rcv_mss;  in __tcp_select_window()
2625 		icsk->icsk_ack.quick = 0;  in __tcp_select_window()
2801 	struct inet_connection_sock *icsk = inet_csk(sk);  in __tcp_retransmit_skb()  local
2808 	if (icsk->icsk_mtup.probe_size)  in __tcp_retransmit_skb()
2809 		icsk->icsk_mtup.probe_size = 0;  in __tcp_retransmit_skb()
2943 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_xmit_retransmit_queue()  local
2983 			if (icsk->icsk_ca_state != TCP_CA_Loss)  in tcp_xmit_retransmit_queue()
3004 		    icsk->icsk_pending != ICSK_TIME_REO_TIMEOUT)  in tcp_xmit_retransmit_queue()
3259 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_ca_dst_init()  local
3269 		module_put(icsk->icsk_ca_ops->owner);  in tcp_ca_dst_init()
3270 		icsk->icsk_ca_dst_locked = tcp_ca_dst_locked(dst);  in tcp_ca_dst_init()
3271 		icsk->icsk_ca_ops = ca;  in tcp_ca_dst_init()
3520 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_send_delayed_ack()  local
3521 	int ato = icsk->icsk_ack.ato;  in tcp_send_delayed_ack()
3528 		if (icsk->icsk_ack.pingpong ||  in tcp_send_delayed_ack()
3529 		    (icsk->icsk_ack.pending & ICSK_ACK_PUSHED))  in tcp_send_delayed_ack()
3553 	if (icsk->icsk_ack.pending & ICSK_ACK_TIMER) {  in tcp_send_delayed_ack()
3557 		if (icsk->icsk_ack.blocked ||  in tcp_send_delayed_ack()
3558 		    time_before_eq(icsk->icsk_ack.timeout, jiffies + (ato >> 2))) {  in tcp_send_delayed_ack()
3563 		if (!time_before(timeout, icsk->icsk_ack.timeout))  in tcp_send_delayed_ack()
3564 			timeout = icsk->icsk_ack.timeout;  in tcp_send_delayed_ack()
3566 	icsk->icsk_ack.pending |= ICSK_ACK_SCHED | ICSK_ACK_TIMER;  in tcp_send_delayed_ack()
3567 	icsk->icsk_ack.timeout = timeout;  in tcp_send_delayed_ack()
3568 	sk_reset_timer(sk, &icsk->icsk_delack_timer, timeout);  in tcp_send_delayed_ack()
3706 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_send_probe0()  local
3716 		icsk->icsk_probes_out = 0;  in tcp_send_probe0()
3717 		icsk->icsk_backoff = 0;  in tcp_send_probe0()
3722 		if (icsk->icsk_backoff < net->ipv4.sysctl_tcp_retries2)  in tcp_send_probe0()
3723 			icsk->icsk_backoff++;  in tcp_send_probe0()
3724 		icsk->icsk_probes_out++;  in tcp_send_probe0()
3733 		if (!icsk->icsk_probes_out)  in tcp_send_probe0()
3734 			icsk->icsk_probes_out = 1;  in tcp_send_probe0()