132 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_measure_rcv_mss()  local
133 	const unsigned int lss = icsk->icsk_ack.last_seg_size;  in tcp_measure_rcv_mss()
136 	icsk->icsk_ack.last_seg_size = 0;  in tcp_measure_rcv_mss()
142 	if (len >= icsk->icsk_ack.rcv_mss) {  in tcp_measure_rcv_mss()
143 		icsk->icsk_ack.rcv_mss = len;  in tcp_measure_rcv_mss()
164 			icsk->icsk_ack.last_seg_size = len;  in tcp_measure_rcv_mss()
166 				icsk->icsk_ack.rcv_mss = len;  in tcp_measure_rcv_mss()
170 		if (icsk->icsk_ack.pending & ICSK_ACK_PUSHED)  in tcp_measure_rcv_mss()
171 			icsk->icsk_ack.pending |= ICSK_ACK_PUSHED2;  in tcp_measure_rcv_mss()
172 		icsk->icsk_ack.pending |= ICSK_ACK_PUSHED;  in tcp_measure_rcv_mss()
178 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_incr_quickack()  local
179 	unsigned int quickacks = tcp_sk(sk)->rcv_wnd / (2 * icsk->icsk_ack.rcv_mss);  in tcp_incr_quickack()
183 	if (quickacks > icsk->icsk_ack.quick)  in tcp_incr_quickack()
184 		icsk->icsk_ack.quick = min(quickacks, TCP_MAX_QUICKACKS);  in tcp_incr_quickack()
189 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_enter_quickack_mode()  local
191 	icsk->icsk_ack.pingpong = 0;  in tcp_enter_quickack_mode()
192 	icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_enter_quickack_mode()
201 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_in_quickack_mode()  local
203 	return icsk->icsk_ack.quick && !icsk->icsk_ack.pingpong;  in tcp_in_quickack_mode()
443 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_clamp_window()  local
445 	icsk->icsk_ack.quick = 0;  in tcp_clamp_window()
631 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_event_data_recv()  local
642 	if (!icsk->icsk_ack.ato) {  in tcp_event_data_recv()
647 		icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_event_data_recv()
649 		int m = now - icsk->icsk_ack.lrcvtime;  in tcp_event_data_recv()
653 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + TCP_ATO_MIN / 2;  in tcp_event_data_recv()
654 		} else if (m < icsk->icsk_ack.ato) {  in tcp_event_data_recv()
655 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + m;  in tcp_event_data_recv()
656 			if (icsk->icsk_ack.ato > icsk->icsk_rto)  in tcp_event_data_recv()
657 				icsk->icsk_ack.ato = icsk->icsk_rto;  in tcp_event_data_recv()
658 		} else if (m > icsk->icsk_rto) {  in tcp_event_data_recv()
666 	icsk->icsk_ack.lrcvtime = now;  in tcp_event_data_recv()
1042 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mark_lost_retrans()  local
1051 	    icsk->icsk_ca_state != TCP_CA_Recovery)  in tcp_mark_lost_retrans()
1924 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_enter_loss()  local
1931 	if (icsk->icsk_ca_state <= TCP_CA_Disorder ||  in tcp_enter_loss()
1933 	    (icsk->icsk_ca_state == TCP_CA_Loss && !icsk->icsk_retransmits)) {  in tcp_enter_loss()
1936 		tp->snd_ssthresh = icsk->icsk_ca_ops->ssthresh(sk);  in tcp_enter_loss()
1976 	if (icsk->icsk_ca_state <= TCP_CA_Disorder &&  in tcp_enter_loss()
1989 		   (new_recovery || icsk->icsk_retransmits) &&  in tcp_enter_loss()
2394 		const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_undo_cwnd_reduction()  local
2396 		if (icsk->icsk_ca_ops->undo_cwnd)  in tcp_undo_cwnd_reduction()
2397 			tp->snd_cwnd = icsk->icsk_ca_ops->undo_cwnd(sk);  in tcp_undo_cwnd_reduction()
2594 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtup_probe_failed()  local
2596 	icsk->icsk_mtup.search_high = icsk->icsk_mtup.probe_size - 1;  in tcp_mtup_probe_failed()
2597 	icsk->icsk_mtup.probe_size = 0;  in tcp_mtup_probe_failed()
2603 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtup_probe_success()  local
2609 		       icsk->icsk_mtup.probe_size;  in tcp_mtup_probe_success()
2614 	icsk->icsk_mtup.search_low = icsk->icsk_mtup.probe_size;  in tcp_mtup_probe_success()
2615 	icsk->icsk_mtup.probe_size = 0;  in tcp_mtup_probe_success()
2616 	tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);  in tcp_mtup_probe_success()
2625 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_simple_retransmit()  local
2659 	if (icsk->icsk_ca_state != TCP_CA_Loss) {  in tcp_simple_retransmit()
2792 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_fastretrans_alert()  local
2817 	if (icsk->icsk_ca_state == TCP_CA_Open) {  in tcp_fastretrans_alert()
2821 		switch (icsk->icsk_ca_state) {  in tcp_fastretrans_alert()
2842 	switch (icsk->icsk_ca_state) {  in tcp_fastretrans_alert()
2861 		if (icsk->icsk_ca_state != TCP_CA_Open)  in tcp_fastretrans_alert()
2872 		if (icsk->icsk_ca_state <= TCP_CA_Disorder)  in tcp_fastretrans_alert()
2881 		if (icsk->icsk_ca_state < TCP_CA_CWR &&  in tcp_fastretrans_alert()
2882 		    icsk->icsk_mtup.probe_size &&  in tcp_fastretrans_alert()
2957 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_cong_avoid()  local
2959 	icsk->icsk_ca_ops->cong_avoid(sk, ack, acked);  in tcp_cong_avoid()
2968 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_rearm_rto()  local
2982 		if (icsk->icsk_pending == ICSK_TIME_EARLY_RETRANS ||  in tcp_rearm_rto()
2983 		    icsk->icsk_pending == ICSK_TIME_LOSS_PROBE) {  in tcp_rearm_rto()
3060 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_clean_rtx_queue()  local
3166 		if (unlikely(icsk->icsk_mtup.probe_size &&  in tcp_clean_rtx_queue()
3206 		icsk = inet_csk(sk);  in tcp_clean_rtx_queue()
3209 				 tp->lost_out, icsk->icsk_ca_state);  in tcp_clean_rtx_queue()
3214 				 tp->sacked_out, icsk->icsk_ca_state);  in tcp_clean_rtx_queue()
3219 				 tp->retrans_out, icsk->icsk_ca_state);  in tcp_clean_rtx_queue()
3230 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_ack_probe()  local
3235 		icsk->icsk_backoff = 0;  in tcp_ack_probe()
3241 		unsigned long when = inet_csk_rto_backoff(icsk, TCP_RTO_MAX);  in tcp_ack_probe()
3458 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_in_ack_event()  local
3460 	if (icsk->icsk_ca_ops->in_ack_event)  in tcp_in_ack_event()
3461 		icsk->icsk_ca_ops->in_ack_event(sk, flags);  in tcp_in_ack_event()
3467 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_ack()  local
3500 	if (icsk->icsk_pending == ICSK_TIME_EARLY_RETRANS ||  in tcp_ack()
3501 	    icsk->icsk_pending == ICSK_TIME_LOSS_PROBE)  in tcp_ack()
3506 		icsk->icsk_retransmits = 0;  in tcp_ack()
3558 	icsk->icsk_probes_out = 0;  in tcp_ack()
3587 	if (icsk->icsk_pending == ICSK_TIME_RETRANS)  in tcp_ack()
5378 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_finish_connect()  local
5383 		icsk->icsk_af_ops->sk_rx_dst_set(sk, skb);  in tcp_finish_connect()
5388 	icsk->icsk_af_ops->rebuild_header(sk);  in tcp_finish_connect()
5472 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_rcv_synsent_state_process()  local
5566 		tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);  in tcp_rcv_synsent_state_process()
5583 		    icsk->icsk_accept_queue.rskq_defer_accept ||  in tcp_rcv_synsent_state_process()
5584 		    icsk->icsk_ack.pingpong) {  in tcp_rcv_synsent_state_process()
5593 			icsk->icsk_ack.lrcvtime = tcp_time_stamp;  in tcp_rcv_synsent_state_process()
5654 		tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);  in tcp_rcv_synsent_state_process()
5701 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_rcv_state_process()  local
5723 			if (icsk->icsk_af_ops->conn_request(sk, skb) < 0)  in tcp_rcv_state_process()
5794 			icsk->icsk_af_ops->rebuild_header(sk);  in tcp_rcv_state_process()