228 	const unsigned int lss = icsk->icsk_ack.last_seg_size;  in tcp_measure_rcv_mss()
231 	icsk->icsk_ack.last_seg_size = 0;  in tcp_measure_rcv_mss()
237 	if (len >= icsk->icsk_ack.rcv_mss) {  in tcp_measure_rcv_mss()
242 		if (unlikely(len != icsk->icsk_ack.rcv_mss)) {  in tcp_measure_rcv_mss()
259 		icsk->icsk_ack.rcv_mss = min_t(unsigned int, len,  in tcp_measure_rcv_mss()
262 		DO_ONCE_LITE_IF(len > icsk->icsk_ack.rcv_mss + MAX_TCP_OPTION_SPACE,  in tcp_measure_rcv_mss()
276 			icsk->icsk_ack.pending |= ICSK_ACK_PUSHED;  in tcp_measure_rcv_mss()
297 			icsk->icsk_ack.last_seg_size = len;  in tcp_measure_rcv_mss()
299 				icsk->icsk_ack.rcv_mss = len;  in tcp_measure_rcv_mss()
303 		if (icsk->icsk_ack.pending & ICSK_ACK_PUSHED)  in tcp_measure_rcv_mss()
304 			icsk->icsk_ack.pending |= ICSK_ACK_PUSHED2;  in tcp_measure_rcv_mss()
305 		icsk->icsk_ack.pending |= ICSK_ACK_PUSHED;  in tcp_measure_rcv_mss()
312 	unsigned int quickacks = tcp_sk(sk)->rcv_wnd / (2 * icsk->icsk_ack.rcv_mss);  in tcp_incr_quickack()
317 	if (quickacks > icsk->icsk_ack.quick)  in tcp_incr_quickack()
318 		icsk->icsk_ack.quick = quickacks;  in tcp_incr_quickack()
327 	icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_enter_quickack_mode()
338 	return icsk->icsk_ack.dst_quick_ack ||  in tcp_in_quickack_mode()
339 		(icsk->icsk_ack.quick && !inet_csk_in_pingpong_mode(sk));  in tcp_in_quickack_mode()
358 			inet_csk(sk)->icsk_ack.pending |= ICSK_ACK_NOW;  in tcp_ecn_accept_cwr()
508 			return 2 * inet_csk(sk)->icsk_ack.rcv_mss;  in __tcp_grow_window()
562 			inet_csk(sk)->icsk_ack.quick |= 1;  in tcp_grow_window()
620 	icsk->icsk_ack.quick = 0;  in tcp_clamp_window()
650 	inet_csk(sk)->icsk_ack.rcv_mss = hint;  in tcp_initialize_rcv_mss()
742 	    TCP_SKB_CB(skb)->seq >= inet_csk(sk)->icsk_ack.rcv_mss) {  in tcp_rcv_rtt_measure_ts()
819 		icsk->icsk_ack.lrcv_flowlabel = ntohl(ip6_flowlabel(ipv6_hdr(skb)));  in tcp_save_lrcv_flowlabel()
847 	if (!icsk->icsk_ack.ato) {  in tcp_event_data_recv()
852 		icsk->icsk_ack.ato = TCP_ATO_MIN;  in tcp_event_data_recv()
854 		int m = now - icsk->icsk_ack.lrcvtime;  in tcp_event_data_recv()
858 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + TCP_ATO_MIN / 2;  in tcp_event_data_recv()
859 		} else if (m < icsk->icsk_ack.ato) {  in tcp_event_data_recv()
860 			icsk->icsk_ack.ato = (icsk->icsk_ack.ato >> 1) + m;  in tcp_event_data_recv()
861 			if (icsk->icsk_ack.ato > icsk->icsk_rto)  in tcp_event_data_recv()
862 				icsk->icsk_ack.ato = icsk->icsk_rto;  in tcp_event_data_recv()
870 	icsk->icsk_ack.lrcvtime = now;  in tcp_event_data_recv()
4720 	    (tcp_sk(sk)->inet_conn.icsk_ack.lrcv_flowlabel !=  in tcp_rcv_spurious_retrans()
5303 			inet_csk(sk)->icsk_ack.pending |=  in tcp_data_queue()
5329 				inet_csk(sk)->icsk_ack.pending |= ICSK_ACK_NOW;  in tcp_data_queue()
5784 	if (((tp->rcv_nxt - tp->rcv_wup) > inet_csk(sk)->icsk_ack.rcv_mss &&  in __tcp_ack_snd_check()
5795 	    inet_csk(sk)->icsk_ack.pending & ICSK_ACK_NOW) {  in __tcp_ack_snd_check()
6364 	icsk->icsk_ack.lrcvtime = tcp_jiffies32;  in tcp_finish_connect()