134 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_measure_rcv_mss()  local
135 	const unsigned int lss = icsk->icsk_ack.last_seg_size;  in tcp_measure_rcv_mss()
138 	icsk->icsk_ack.last_seg_size = 0;  in tcp_measure_rcv_mss()
144 	if (len >= icsk->icsk_ack.rcv_mss) {  in tcp_measure_rcv_mss()
145 		icsk->icsk_ack.rcv_mss = len;  in tcp_measure_rcv_mss()
166 			icsk->icsk_ack.last_seg_size = len;  in tcp_measure_rcv_mss()
168 				icsk->icsk_ack.rcv_mss = len;  in tcp_measure_rcv_mss()
172 		if (icsk->icsk_ack.pending & ICSK_ACK_PUSHED)  in tcp_measure_rcv_mss()
173 			icsk->icsk_ack.pending |= ICSK_ACK_PUSHED2;  in tcp_measure_rcv_mss()
174 		icsk->icsk_ack.pending |= ICSK_ACK_PUSHED;  in tcp_measure_rcv_mss()
180 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_incr_quickack()  local
181 	unsigned int quickacks = tcp_sk(sk)->rcv_wnd / (2 * icsk->icsk_ack.rcv_mss);  in tcp_incr_quickack()
185 	if (quickacks > icsk->icsk_ack.quick)  in tcp_incr_quickack()
186 		icsk->icsk_ack.quick = min(quickacks, TCP_MAX_QUICKACKS);  in tcp_incr_quickack()
191 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_enter_quickack_mode()  local
193 	icsk->icsk_ack.pingpong = 0;  in tcp_enter_quickack_mode()
194 	icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_enter_quickack_mode()
203 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_in_quickack_mode()  local
207 		(icsk->icsk_ack.quick && !icsk->icsk_ack.pingpong);  in tcp_in_quickack_mode()
447 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_clamp_window()  local
449 	icsk->icsk_ack.quick = 0;  in tcp_clamp_window()
635 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_event_data_recv()  local
646 	if (!icsk->icsk_ack.ato) {  in tcp_event_data_recv()
651 		icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_event_data_recv()
653 		int m = now - icsk->icsk_ack.lrcvtime;  in tcp_event_data_recv()
657 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + TCP_ATO_MIN / 2;  in tcp_event_data_recv()
658 		} else if (m < icsk->icsk_ack.ato) {  in tcp_event_data_recv()
659 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + m;  in tcp_event_data_recv()
660 			if (icsk->icsk_ack.ato > icsk->icsk_rto)  in tcp_event_data_recv()
661 				icsk->icsk_ack.ato = icsk->icsk_rto;  in tcp_event_data_recv()
662 		} else if (m > icsk->icsk_rto) {  in tcp_event_data_recv()
670 	icsk->icsk_ack.lrcvtime = now;  in tcp_event_data_recv()
1874 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_enter_loss()  local
1877 	bool new_recovery = icsk->icsk_ca_state < TCP_CA_Recovery;  in tcp_enter_loss()
1881 	if (icsk->icsk_ca_state <= TCP_CA_Disorder ||  in tcp_enter_loss()
1883 	    (icsk->icsk_ca_state == TCP_CA_Loss && !icsk->icsk_retransmits)) {  in tcp_enter_loss()
1885 		tp->snd_ssthresh = icsk->icsk_ca_ops->ssthresh(sk);  in tcp_enter_loss()
1925 	if (icsk->icsk_ca_state <= TCP_CA_Disorder &&  in tcp_enter_loss()
1938 		   (new_recovery || icsk->icsk_retransmits) &&  in tcp_enter_loss()
2358 		const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_undo_cwnd_reduction()  local
2360 		if (icsk->icsk_ca_ops->undo_cwnd)  in tcp_undo_cwnd_reduction()
2361 			tp->snd_cwnd = icsk->icsk_ca_ops->undo_cwnd(sk);  in tcp_undo_cwnd_reduction()
2563 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtup_probe_failed()  local
2565 	icsk->icsk_mtup.search_high = icsk->icsk_mtup.probe_size - 1;  in tcp_mtup_probe_failed()
2566 	icsk->icsk_mtup.probe_size = 0;  in tcp_mtup_probe_failed()
2573 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtup_probe_success()  local
2579 		       icsk->icsk_mtup.probe_size;  in tcp_mtup_probe_success()
2584 	icsk->icsk_mtup.search_low = icsk->icsk_mtup.probe_size;  in tcp_mtup_probe_success()
2585 	icsk->icsk_mtup.probe_size = 0;  in tcp_mtup_probe_success()
2586 	tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);  in tcp_mtup_probe_success()
2596 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_simple_retransmit()  local
2630 	if (icsk->icsk_ca_state != TCP_CA_Loss) {  in tcp_simple_retransmit()
2763 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_fastretrans_alert()  local
2788 	if (icsk->icsk_ca_state == TCP_CA_Open) {  in tcp_fastretrans_alert()
2792 		switch (icsk->icsk_ca_state) {  in tcp_fastretrans_alert()
2818 	switch (icsk->icsk_ca_state) {  in tcp_fastretrans_alert()
2837 		if (icsk->icsk_ca_state != TCP_CA_Open &&  in tcp_fastretrans_alert()
2849 		if (icsk->icsk_ca_state <= TCP_CA_Disorder)  in tcp_fastretrans_alert()
2858 		if (icsk->icsk_ca_state < TCP_CA_CWR &&  in tcp_fastretrans_alert()
2859 		    icsk->icsk_mtup.probe_size &&  in tcp_fastretrans_alert()
2997 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_cong_avoid()  local
2999 	icsk->icsk_ca_ops->cong_avoid(sk, ack, acked);  in tcp_cong_avoid()
3008 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_rearm_rto()  local
3022 		if (icsk->icsk_pending == ICSK_TIME_EARLY_RETRANS ||  in tcp_rearm_rto()
3023 		    icsk->icsk_pending == ICSK_TIME_LOSS_PROBE) {  in tcp_rearm_rto()
3101 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_clean_rtx_queue()  local
3212 		if (unlikely(icsk->icsk_mtup.probe_size &&  in tcp_clean_rtx_queue()
3242 	if (icsk->icsk_ca_ops->pkts_acked)  in tcp_clean_rtx_queue()
3243 		icsk->icsk_ca_ops->pkts_acked(sk, pkts_acked, ca_rtt_us);  in tcp_clean_rtx_queue()
3250 		icsk = inet_csk(sk);  in tcp_clean_rtx_queue()
3253 				 tp->lost_out, icsk->icsk_ca_state);  in tcp_clean_rtx_queue()
3258 				 tp->sacked_out, icsk->icsk_ca_state);  in tcp_clean_rtx_queue()
3263 				 tp->retrans_out, icsk->icsk_ca_state);  in tcp_clean_rtx_queue()
3274 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_ack_probe()  local
3279 		icsk->icsk_backoff = 0;  in tcp_ack_probe()
3505 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_in_ack_event()  local
3507 	if (icsk->icsk_ca_ops->in_ack_event)  in tcp_in_ack_event()
3508 		icsk->icsk_ca_ops->in_ack_event(sk, flags);  in tcp_in_ack_event()
3514 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_ack()  local
3549 	if (icsk->icsk_pending == ICSK_TIME_EARLY_RETRANS ||  in tcp_ack()
3550 	    icsk->icsk_pending == ICSK_TIME_LOSS_PROBE)  in tcp_ack()
3555 		icsk->icsk_retransmits = 0;  in tcp_ack()
3607 	icsk->icsk_probes_out = 0;  in tcp_ack()
3636 	if (icsk->icsk_pending == ICSK_TIME_RETRANS)  in tcp_ack()
5426 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_finish_connect()  local
5431 		icsk->icsk_af_ops->sk_rx_dst_set(sk, skb);  in tcp_finish_connect()
5436 	icsk->icsk_af_ops->rebuild_header(sk);  in tcp_finish_connect()
5520 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_rcv_synsent_state_process()  local
5614 		tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);  in tcp_rcv_synsent_state_process()
5631 		    icsk->icsk_accept_queue.rskq_defer_accept ||  in tcp_rcv_synsent_state_process()
5632 		    icsk->icsk_ack.pingpong) {  in tcp_rcv_synsent_state_process()
5641 			icsk->icsk_ack.lrcvtime = tcp_time_stamp;  in tcp_rcv_synsent_state_process()
5702 		tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);  in tcp_rcv_synsent_state_process()
5748 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_rcv_state_process()  local
5770 			if (icsk->icsk_af_ops->conn_request(sk, skb) < 0)  in tcp_rcv_state_process()
5842 			icsk->icsk_af_ops->rebuild_header(sk);  in tcp_rcv_state_process()