229 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_measure_rcv_mss()  local
230 	const unsigned int lss = icsk->icsk_ack.last_seg_size;  in tcp_measure_rcv_mss()
233 	icsk->icsk_ack.last_seg_size = 0;  in tcp_measure_rcv_mss()
239 	if (len >= icsk->icsk_ack.rcv_mss) {  in tcp_measure_rcv_mss()
244 		if (unlikely(len != icsk->icsk_ack.rcv_mss)) {  in tcp_measure_rcv_mss()
261 		icsk->icsk_ack.rcv_mss = min_t(unsigned int, len,  in tcp_measure_rcv_mss()
264 		DO_ONCE_LITE_IF(len > icsk->icsk_ack.rcv_mss + MAX_TCP_OPTION_SPACE,  in tcp_measure_rcv_mss()
278 			icsk->icsk_ack.pending |= ICSK_ACK_PUSHED;  in tcp_measure_rcv_mss()
299 			icsk->icsk_ack.last_seg_size = len;  in tcp_measure_rcv_mss()
301 				icsk->icsk_ack.rcv_mss = len;  in tcp_measure_rcv_mss()
305 		if (icsk->icsk_ack.pending & ICSK_ACK_PUSHED)  in tcp_measure_rcv_mss()
306 			icsk->icsk_ack.pending |= ICSK_ACK_PUSHED2;  in tcp_measure_rcv_mss()
307 		icsk->icsk_ack.pending |= ICSK_ACK_PUSHED;  in tcp_measure_rcv_mss()
313 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_incr_quickack()  local
314 	unsigned int quickacks = tcp_sk(sk)->rcv_wnd / (2 * icsk->icsk_ack.rcv_mss);  in tcp_incr_quickack()
319 	if (quickacks > icsk->icsk_ack.quick)  in tcp_incr_quickack()
320 		icsk->icsk_ack.quick = quickacks;  in tcp_incr_quickack()
325 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_enter_quickack_mode()  local
329 	icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_enter_quickack_mode()
338 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_in_quickack_mode()  local
340 	return icsk->icsk_ack.dst_quick_ack ||  in tcp_in_quickack_mode()
341 		(icsk->icsk_ack.quick && !inet_csk_in_pingpong_mode(sk));  in tcp_in_quickack_mode()
781 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_clamp_window()  local
785 	icsk->icsk_ack.quick = 0;  in tcp_clamp_window()
999 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_save_lrcv_flowlabel()  local
1002 		icsk->icsk_ack.lrcv_flowlabel = ntohl(ip6_flowlabel(ipv6_hdr(skb)));  in tcp_save_lrcv_flowlabel()
1019 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_event_data_recv()  local
1030 	if (!icsk->icsk_ack.ato) {  in tcp_event_data_recv()
1035 		icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_event_data_recv()
1037 		int m = now - icsk->icsk_ack.lrcvtime;  in tcp_event_data_recv()
1041 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + TCP_ATO_MIN / 2;  in tcp_event_data_recv()
1042 		} else if (m < icsk->icsk_ack.ato) {  in tcp_event_data_recv()
1043 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + m;  in tcp_event_data_recv()
1044 			if (icsk->icsk_ack.ato > icsk->icsk_rto)  in tcp_event_data_recv()
1045 				icsk->icsk_ack.ato = icsk->icsk_rto;  in tcp_event_data_recv()
1046 		} else if (m > icsk->icsk_rto) {  in tcp_event_data_recv()
1053 	icsk->icsk_ack.lrcvtime = now;  in tcp_event_data_recv()
2555 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_enter_loss()  local
2558 	bool new_recovery = icsk->icsk_ca_state < TCP_CA_Recovery;  in tcp_enter_loss()
2564 	if (icsk->icsk_ca_state <= TCP_CA_Disorder ||  in tcp_enter_loss()
2566 	    (icsk->icsk_ca_state == TCP_CA_Loss && !icsk->icsk_retransmits)) {  in tcp_enter_loss()
2569 		tp->snd_ssthresh = icsk->icsk_ca_ops->ssthresh(sk);  in tcp_enter_loss()
2581 	if (icsk->icsk_ca_state <= TCP_CA_Disorder &&  in tcp_enter_loss()
2596 		   (new_recovery || icsk->icsk_retransmits) &&  in tcp_enter_loss()
2857 		const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_undo_cwnd_reduction()  local
2859 		tcp_snd_cwnd_set(tp, icsk->icsk_ca_ops->undo_cwnd(sk));  in tcp_undo_cwnd_reduction()
3075 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtup_probe_failed()  local
3077 	icsk->icsk_mtup.search_high = icsk->icsk_mtup.probe_size - 1;  in tcp_mtup_probe_failed()
3078 	icsk->icsk_mtup.probe_size = 0;  in tcp_mtup_probe_failed()
3085 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_mtup_probe_success()  local
3091 	do_div(val, icsk->icsk_mtup.probe_size);  in tcp_mtup_probe_success()
3099 	icsk->icsk_mtup.search_low = icsk->icsk_mtup.probe_size;  in tcp_mtup_probe_success()
3100 	icsk->icsk_mtup.probe_size = 0;  in tcp_mtup_probe_success()
3101 	tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);  in tcp_mtup_probe_success()
3117 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_non_congestion_loss_retransmit()  local
3120 	if (icsk->icsk_ca_state != TCP_CA_Loss) {  in tcp_non_congestion_loss_retransmit()
3331 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_fastretrans_alert()  local
3353 	if (icsk->icsk_ca_state == TCP_CA_Open) {  in tcp_fastretrans_alert()
3357 		switch (icsk->icsk_ca_state) {  in tcp_fastretrans_alert()
3378 	switch (icsk->icsk_ca_state) {  in tcp_fastretrans_alert()
3390 		if (icsk->icsk_ca_state != TCP_CA_Recovery) {  in tcp_fastretrans_alert()
3401 		if (icsk->icsk_ca_state != TCP_CA_Loss)  in tcp_fastretrans_alert()
3404 		if (!(icsk->icsk_ca_state == TCP_CA_Open ||  in tcp_fastretrans_alert()
3416 		if (icsk->icsk_ca_state <= TCP_CA_Disorder)  in tcp_fastretrans_alert()
3426 		if (icsk->icsk_ca_state < TCP_CA_CWR &&  in tcp_fastretrans_alert()
3427 		    icsk->icsk_mtup.probe_size &&  in tcp_fastretrans_alert()
3515 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_cong_avoid()  local
3517 	icsk->icsk_ca_ops->cong_avoid(sk, ack, acked);  in tcp_cong_avoid()
3526 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_rearm_rto()  local
3540 		if (icsk->icsk_pending == ICSK_TIME_REO_TIMEOUT ||  in tcp_rearm_rto()
3541 		    icsk->icsk_pending == ICSK_TIME_LOSS_PROBE) {  in tcp_rearm_rto()
3606 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_clean_rtx_queue()  local
3737 		if (unlikely(icsk->icsk_mtup.probe_size &&  in tcp_clean_rtx_queue()
3772 	if (icsk->icsk_ca_ops->pkts_acked) {  in tcp_clean_rtx_queue()
3778 		icsk->icsk_ca_ops->pkts_acked(sk, &sample);  in tcp_clean_rtx_queue()
3786 		icsk = inet_csk(sk);  in tcp_clean_rtx_queue()
3789 				 tp->lost_out, icsk->icsk_ca_state);  in tcp_clean_rtx_queue()
3794 				 tp->sacked_out, icsk->icsk_ca_state);  in tcp_clean_rtx_queue()
3799 				 tp->retrans_out, icsk->icsk_ca_state);  in tcp_clean_rtx_queue()
3809 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_ack_probe()  local
3817 		icsk->icsk_backoff = 0;  in tcp_ack_probe()
3818 		icsk->icsk_probes_tstamp = 0;  in tcp_ack_probe()
3861 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_cong_control()  local
3863 	if (icsk->icsk_ca_ops->cong_control) {  in tcp_cong_control()
3864 		icsk->icsk_ca_ops->cong_control(sk, ack, flag, rs);  in tcp_cong_control()
4144 	const struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_in_ack_event()  local
4146 	if (icsk->icsk_ca_ops->in_ack_event) {  in tcp_in_ack_event()
4157 		icsk->icsk_ca_ops->in_ack_event(sk, ack_ev_flags);  in tcp_in_ack_event()
4248 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_ack()  local
4297 		WRITE_ONCE(icsk->icsk_retransmits, 0);  in tcp_ack()
4360 	WRITE_ONCE(icsk->icsk_probes_out, 0);  in tcp_ack()
6727 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_init_transfer()  local
6731 	icsk->icsk_af_ops->rebuild_header(sk);  in tcp_init_transfer()
6748 	if (!icsk->icsk_ca_initialized)  in tcp_init_transfer()
6756 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_finish_connect()  local
6760 	icsk->icsk_ack.lrcvtime = tcp_jiffies32;  in tcp_finish_connect()
6763 		icsk->icsk_af_ops->sk_rx_dst_set(sk, skb);  in tcp_finish_connect()
6875 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_rcv_synsent_state_process()  local
6898 			if (icsk->icsk_retransmits == 0)  in tcp_rcv_synsent_state_process()
6982 		tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);  in tcp_rcv_synsent_state_process()
7006 		    READ_ONCE(icsk->icsk_accept_queue.rskq_defer_accept) ||  in tcp_rcv_synsent_state_process()
7083 		tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);  in tcp_rcv_synsent_state_process()
7173 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_rcv_state_process()  local
7202 			icsk->icsk_af_ops->conn_request(sk, skb);  in tcp_rcv_state_process()