387 	struct tcp_sock *tp = tcp_sk(sk);  in tcp_update_metrics()  local
400 	if (icsk->icsk_backoff || !tp->srtt_us) {  in tcp_update_metrics()
416 	m = rtt - tp->srtt_us;  in tcp_update_metrics()
424 			rtt = tp->srtt_us;  in tcp_update_metrics()
438 		if (m < tp->mdev_us)  in tcp_update_metrics()
439 			m = tp->mdev_us;  in tcp_update_metrics()
450 	if (tcp_in_initial_slowstart(tp)) {  in tcp_update_metrics()
454 			if (val && (tp->snd_cwnd >> 1) > val)  in tcp_update_metrics()
456 					       tp->snd_cwnd >> 1);  in tcp_update_metrics()
460 			if (tp->snd_cwnd > val)  in tcp_update_metrics()
462 					       tp->snd_cwnd);  in tcp_update_metrics()
464 	} else if (tp->snd_cwnd > tp->snd_ssthresh &&  in tcp_update_metrics()
469 				       max(tp->snd_cwnd >> 1, tp->snd_ssthresh));  in tcp_update_metrics()
472 			tcp_metric_set(tm, TCP_METRIC_CWND, (val + tp->snd_cwnd) >> 1);  in tcp_update_metrics()
481 				       (val + tp->snd_ssthresh) >> 1);  in tcp_update_metrics()
485 			if (val && tp->snd_ssthresh > val)  in tcp_update_metrics()
487 					       tp->snd_ssthresh);  in tcp_update_metrics()
491 			if (val < tp->reordering &&  in tcp_update_metrics()
492 			    tp->reordering != sysctl_tcp_reordering)  in tcp_update_metrics()
494 					       tp->reordering);  in tcp_update_metrics()
507 	struct tcp_sock *tp = tcp_sk(sk);  in tcp_init_metrics()  local
524 		tp->snd_cwnd_clamp = tcp_metric_get(tm, TCP_METRIC_CWND);  in tcp_init_metrics()
528 		tp->snd_ssthresh = val;  in tcp_init_metrics()
529 		if (tp->snd_ssthresh > tp->snd_cwnd_clamp)  in tcp_init_metrics()
530 			tp->snd_ssthresh = tp->snd_cwnd_clamp;  in tcp_init_metrics()
535 		tp->snd_ssthresh = TCP_INFINITE_SSTHRESH;  in tcp_init_metrics()
538 	if (val && tp->reordering != val) {  in tcp_init_metrics()
539 		tcp_disable_fack(tp);  in tcp_init_metrics()
540 		tcp_disable_early_retrans(tp);  in tcp_init_metrics()
541 		tp->reordering = val;  in tcp_init_metrics()
567 	if (crtt > tp->srtt_us) {  in tcp_init_metrics()
571 	} else if (tp->srtt_us == 0) {  in tcp_init_metrics()
578 		tp->rttvar_us = jiffies_to_usecs(TCP_TIMEOUT_FALLBACK);  in tcp_init_metrics()
579 		tp->mdev_us = tp->mdev_max_us = tp->rttvar_us;  in tcp_init_metrics()
588 	if (tp->total_retrans > 1)  in tcp_init_metrics()
589 		tp->snd_cwnd = 1;  in tcp_init_metrics()
591 		tp->snd_cwnd = tcp_init_cwnd(tp, dst);  in tcp_init_metrics()
592 	tp->snd_cwnd_stamp = tcp_time_stamp;  in tcp_init_metrics()
633 		struct tcp_sock *tp = tcp_sk(sk);  in tcp_fetch_timewait_stamp()  local
636 			tp->rx_opt.ts_recent_stamp = tm->tcpm_ts_stamp;  in tcp_fetch_timewait_stamp()
637 			tp->rx_opt.ts_recent = tm->tcpm_ts;  in tcp_fetch_timewait_stamp()
660 			struct tcp_sock *tp = tcp_sk(sk);  in tcp_remember_stamp()  local
662 			if ((s32)(tm->tcpm_ts - tp->rx_opt.ts_recent) <= 0 ||  in tcp_remember_stamp()
664 			     tm->tcpm_ts_stamp <= (u32)tp->rx_opt.ts_recent_stamp)) {  in tcp_remember_stamp()
665 				tm->tcpm_ts_stamp = (u32)tp->rx_opt.ts_recent_stamp;  in tcp_remember_stamp()
666 				tm->tcpm_ts = tp->rx_opt.ts_recent;  in tcp_remember_stamp()