174 	if (before(tp->lsndtime, icsk->icsk_ack.lrcvtime) &&  in tcp_event_data_sent()
175 	    (u32)(now - icsk->icsk_ack.lrcvtime) < icsk->icsk_ack.ato)  in tcp_event_data_sent()
2944 	int mss = icsk->icsk_ack.rcv_mss;  in __tcp_select_window()
2960 		icsk->icsk_ack.quick = 0;  in __tcp_select_window()
3882 	int ato = icsk->icsk_ack.ato;  in tcp_send_delayed_ack()
3890 		    (icsk->icsk_ack.pending & ICSK_ACK_PUSHED))  in tcp_send_delayed_ack()
3916 	if (icsk->icsk_ack.pending & ICSK_ACK_TIMER) {  in tcp_send_delayed_ack()
3918 		if (time_before_eq(icsk->icsk_ack.timeout, jiffies + (ato >> 2))) {  in tcp_send_delayed_ack()
3923 		if (!time_before(timeout, icsk->icsk_ack.timeout))  in tcp_send_delayed_ack()
3924 			timeout = icsk->icsk_ack.timeout;  in tcp_send_delayed_ack()
3926 	icsk->icsk_ack.pending |= ICSK_ACK_SCHED | ICSK_ACK_TIMER;  in tcp_send_delayed_ack()
3927 	icsk->icsk_ack.timeout = timeout;  in tcp_send_delayed_ack()
3950 		delay = TCP_DELACK_MAX << icsk->icsk_ack.retry;  in __tcp_send_ack()
3952 			icsk->icsk_ack.retry++;  in __tcp_send_ack()
3954 		icsk->icsk_ack.ato = TCP_ATO_MIN;  in __tcp_send_ack()