371 	struct tcp_sock *tp = tcp_sk(sk);  in tcp_update_metrics()  local
384 	if (icsk->icsk_backoff || !tp->srtt_us) {  in tcp_update_metrics()
400 	m = rtt - tp->srtt_us;  in tcp_update_metrics()
408 			rtt = tp->srtt_us;  in tcp_update_metrics()
422 		if (m < tp->mdev_us)  in tcp_update_metrics()
423 			m = tp->mdev_us;  in tcp_update_metrics()
434 	if (tcp_in_initial_slowstart(tp)) {  in tcp_update_metrics()
438 			if (val && (tp->snd_cwnd >> 1) > val)  in tcp_update_metrics()
440 					       tp->snd_cwnd >> 1);  in tcp_update_metrics()
444 			if (tp->snd_cwnd > val)  in tcp_update_metrics()
446 					       tp->snd_cwnd);  in tcp_update_metrics()
448 	} else if (!tcp_in_slow_start(tp) &&  in tcp_update_metrics()
453 				       max(tp->snd_cwnd >> 1, tp->snd_ssthresh));  in tcp_update_metrics()
456 			tcp_metric_set(tm, TCP_METRIC_CWND, (val + tp->snd_cwnd) >> 1);  in tcp_update_metrics()
465 				       (val + tp->snd_ssthresh) >> 1);  in tcp_update_metrics()
469 			if (val && tp->snd_ssthresh > val)  in tcp_update_metrics()
471 					       tp->snd_ssthresh);  in tcp_update_metrics()
475 			if (val < tp->reordering &&  in tcp_update_metrics()
476 			    tp->reordering != sysctl_tcp_reordering)  in tcp_update_metrics()
478 					       tp->reordering);  in tcp_update_metrics()
491 	struct tcp_sock *tp = tcp_sk(sk);  in tcp_init_metrics()  local
508 		tp->snd_cwnd_clamp = tcp_metric_get(tm, TCP_METRIC_CWND);  in tcp_init_metrics()
512 		tp->snd_ssthresh = val;  in tcp_init_metrics()
513 		if (tp->snd_ssthresh > tp->snd_cwnd_clamp)  in tcp_init_metrics()
514 			tp->snd_ssthresh = tp->snd_cwnd_clamp;  in tcp_init_metrics()
519 		tp->snd_ssthresh = TCP_INFINITE_SSTHRESH;  in tcp_init_metrics()
522 	if (val && tp->reordering != val) {  in tcp_init_metrics()
523 		tcp_disable_fack(tp);  in tcp_init_metrics()
524 		tcp_disable_early_retrans(tp);  in tcp_init_metrics()
525 		tp->reordering = val;  in tcp_init_metrics()
551 	if (crtt > tp->srtt_us) {  in tcp_init_metrics()
555 	} else if (tp->srtt_us == 0) {  in tcp_init_metrics()
562 		tp->rttvar_us = jiffies_to_usecs(TCP_TIMEOUT_FALLBACK);  in tcp_init_metrics()
563 		tp->mdev_us = tp->mdev_max_us = tp->rttvar_us;  in tcp_init_metrics()
572 	if (tp->total_retrans > 1)  in tcp_init_metrics()
573 		tp->snd_cwnd = 1;  in tcp_init_metrics()
575 		tp->snd_cwnd = tcp_init_cwnd(tp, dst);  in tcp_init_metrics()
576 	tp->snd_cwnd_stamp = tcp_time_stamp;  in tcp_init_metrics()
617 		struct tcp_sock *tp = tcp_sk(sk);  in tcp_fetch_timewait_stamp()  local
620 			tp->rx_opt.ts_recent_stamp = tm->tcpm_ts_stamp;  in tcp_fetch_timewait_stamp()
621 			tp->rx_opt.ts_recent = tm->tcpm_ts;  in tcp_fetch_timewait_stamp()
644 			struct tcp_sock *tp = tcp_sk(sk);  in tcp_remember_stamp()  local
646 			if ((s32)(tm->tcpm_ts - tp->rx_opt.ts_recent) <= 0 ||  in tcp_remember_stamp()
648 			     tm->tcpm_ts_stamp <= (u32)tp->rx_opt.ts_recent_stamp)) {  in tcp_remember_stamp()
649 				tm->tcpm_ts_stamp = (u32)tp->rx_opt.ts_recent_stamp;  in tcp_remember_stamp()
650 				tm->tcpm_ts = tp->rx_opt.ts_recent;  in tcp_remember_stamp()