165 	const unsigned int lss = icsk->icsk_ack.last_seg_size;  in tcp_measure_rcv_mss()
168 	icsk->icsk_ack.last_seg_size = 0;  in tcp_measure_rcv_mss()
174 	if (len >= icsk->icsk_ack.rcv_mss) {  in tcp_measure_rcv_mss()
175 		icsk->icsk_ack.rcv_mss = min_t(unsigned int, len,  in tcp_measure_rcv_mss()
178 		if (unlikely(len > icsk->icsk_ack.rcv_mss +  in tcp_measure_rcv_mss()
201 			icsk->icsk_ack.last_seg_size = len;  in tcp_measure_rcv_mss()
203 				icsk->icsk_ack.rcv_mss = len;  in tcp_measure_rcv_mss()
207 		if (icsk->icsk_ack.pending & ICSK_ACK_PUSHED)  in tcp_measure_rcv_mss()
208 			icsk->icsk_ack.pending |= ICSK_ACK_PUSHED2;  in tcp_measure_rcv_mss()
209 		icsk->icsk_ack.pending |= ICSK_ACK_PUSHED;  in tcp_measure_rcv_mss()
216 	unsigned int quickacks = tcp_sk(sk)->rcv_wnd / (2 * icsk->icsk_ack.rcv_mss);  in tcp_incr_quickack()
221 	if (quickacks > icsk->icsk_ack.quick)  in tcp_incr_quickack()
222 		icsk->icsk_ack.quick = quickacks;  in tcp_incr_quickack()
231 	icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_enter_quickack_mode()
245 		(icsk->icsk_ack.quick && !inet_csk_in_pingpong_mode(sk));  in tcp_in_quickack_mode()
263 		inet_csk(sk)->icsk_ack.pending |= ICSK_ACK_NOW;  in tcp_ecn_accept_cwr()
401 			return 2 * inet_csk(sk)->icsk_ack.rcv_mss;  in __tcp_grow_window()
431 			inet_csk(sk)->icsk_ack.quick |= 1;  in tcp_grow_window()
481 	icsk->icsk_ack.quick = 0;  in tcp_clamp_window()
511 	inet_csk(sk)->icsk_ack.rcv_mss = hint;  in tcp_initialize_rcv_mss()
586 	    TCP_SKB_CB(skb)->seq >= inet_csk(sk)->icsk_ack.rcv_mss) {  in tcp_rcv_rtt_measure_ts()
690 	if (!icsk->icsk_ack.ato) {  in tcp_event_data_recv()
695 		icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_event_data_recv()
697 		int m = now - icsk->icsk_ack.lrcvtime;  in tcp_event_data_recv()
701 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + TCP_ATO_MIN / 2;  in tcp_event_data_recv()
702 		} else if (m < icsk->icsk_ack.ato) {  in tcp_event_data_recv()
703 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + m;  in tcp_event_data_recv()
704 			if (icsk->icsk_ack.ato > icsk->icsk_rto)  in tcp_event_data_recv()
705 				icsk->icsk_ack.ato = icsk->icsk_rto;  in tcp_event_data_recv()
714 	icsk->icsk_ack.lrcvtime = now;  in tcp_event_data_recv()
4804 				inet_csk(sk)->icsk_ack.pending |= ICSK_ACK_NOW;  in tcp_data_queue()
5230 	if (((tp->rcv_nxt - tp->rcv_wup) > inet_csk(sk)->icsk_ack.rcv_mss &&  in __tcp_ack_snd_check()
5241 	    inet_csk(sk)->icsk_ack.pending & ICSK_ACK_NOW) {  in __tcp_ack_snd_check()
5754 	icsk->icsk_ack.lrcvtime = tcp_jiffies32;  in tcp_finish_connect()