159 	const unsigned int lss = icsk->icsk_ack.last_seg_size;  in tcp_measure_rcv_mss()
162 	icsk->icsk_ack.last_seg_size = 0;  in tcp_measure_rcv_mss()
168 	if (len >= icsk->icsk_ack.rcv_mss) {  in tcp_measure_rcv_mss()
169 		icsk->icsk_ack.rcv_mss = min_t(unsigned int, len,  in tcp_measure_rcv_mss()
172 		if (unlikely(len > icsk->icsk_ack.rcv_mss +  in tcp_measure_rcv_mss()
195 			icsk->icsk_ack.last_seg_size = len;  in tcp_measure_rcv_mss()
197 				icsk->icsk_ack.rcv_mss = len;  in tcp_measure_rcv_mss()
201 		if (icsk->icsk_ack.pending & ICSK_ACK_PUSHED)  in tcp_measure_rcv_mss()
202 			icsk->icsk_ack.pending |= ICSK_ACK_PUSHED2;  in tcp_measure_rcv_mss()
203 		icsk->icsk_ack.pending |= ICSK_ACK_PUSHED;  in tcp_measure_rcv_mss()
210 	unsigned int quickacks = tcp_sk(sk)->rcv_wnd / (2 * icsk->icsk_ack.rcv_mss);  in tcp_incr_quickack()
215 	if (quickacks > icsk->icsk_ack.quick)  in tcp_incr_quickack()
216 		icsk->icsk_ack.quick = quickacks;  in tcp_incr_quickack()
224 	icsk->icsk_ack.pingpong = 0;  in tcp_enter_quickack_mode()
225 	icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_enter_quickack_mode()
239 		(icsk->icsk_ack.quick && !icsk->icsk_ack.pingpong);  in tcp_in_quickack_mode()
257 		inet_csk(sk)->icsk_ack.pending |= ICSK_ACK_NOW;  in tcp_ecn_accept_cwr()
394 			return 2 * inet_csk(sk)->icsk_ack.rcv_mss;  in __tcp_grow_window()
424 			inet_csk(sk)->icsk_ack.quick |= 1;  in tcp_grow_window()
495 	icsk->icsk_ack.quick = 0;  in tcp_clamp_window()
524 	inet_csk(sk)->icsk_ack.rcv_mss = hint;  in tcp_initialize_rcv_mss()
599 	    TCP_SKB_CB(skb)->seq >= inet_csk(sk)->icsk_ack.rcv_mss) {  in tcp_rcv_rtt_measure_ts()
701 	if (!icsk->icsk_ack.ato) {  in tcp_event_data_recv()
706 		icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_event_data_recv()
708 		int m = now - icsk->icsk_ack.lrcvtime;  in tcp_event_data_recv()
712 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + TCP_ATO_MIN / 2;  in tcp_event_data_recv()
713 		} else if (m < icsk->icsk_ack.ato) {  in tcp_event_data_recv()
714 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + m;  in tcp_event_data_recv()
715 			if (icsk->icsk_ack.ato > icsk->icsk_rto)  in tcp_event_data_recv()
716 				icsk->icsk_ack.ato = icsk->icsk_rto;  in tcp_event_data_recv()
725 	icsk->icsk_ack.lrcvtime = now;  in tcp_event_data_recv()
4104 		inet_csk(sk)->icsk_ack.pingpong = 1;  in tcp_fin()
4742 				inet_csk(sk)->icsk_ack.pending |= ICSK_ACK_NOW;  in tcp_data_queue()
5173 	if (((tp->rcv_nxt - tp->rcv_wup) > inet_csk(sk)->icsk_ack.rcv_mss &&  in __tcp_ack_snd_check()
5184 	    inet_csk(sk)->icsk_ack.pending & ICSK_ACK_NOW) {  in __tcp_ack_snd_check()
5661 	icsk->icsk_ack.lrcvtime = tcp_jiffies32;  in tcp_finish_connect()
5876 		    icsk->icsk_ack.pingpong) {  in tcp_rcv_synsent_state_process()