28 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_clamp_rto_to_user_timeout()  local
33 	if (!icsk->icsk_user_timeout)  in tcp_clamp_rto_to_user_timeout()
34 		return icsk->icsk_rto;  in tcp_clamp_rto_to_user_timeout()
36 	remaining = icsk->icsk_user_timeout - elapsed;  in tcp_clamp_rto_to_user_timeout()
40 	return min_t(u32, icsk->icsk_rto, msecs_to_jiffies(remaining));  in tcp_clamp_rto_to_user_timeout()
45 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_clamp_probe0_to_user_timeout()  local
49 	if (!icsk->icsk_user_timeout || !icsk->icsk_probes_tstamp)  in tcp_clamp_probe0_to_user_timeout()
52 	elapsed = tcp_jiffies32 - icsk->icsk_probes_tstamp;  in tcp_clamp_probe0_to_user_timeout()
55 	remaining = msecs_to_jiffies(icsk->icsk_user_timeout) - elapsed;  in tcp_clamp_probe0_to_user_timeout()
160 static void tcp_mtu_probing(struct inet_connection_sock *icsk, struct sock *sk)  in tcp_mtu_probing()  argument
169 	if (!icsk->icsk_mtup.enabled) {  in tcp_mtu_probing()
170 		icsk->icsk_mtup.enabled = 1;  in tcp_mtu_probing()
171 		icsk->icsk_mtup.probe_timestamp = tcp_jiffies32;  in tcp_mtu_probing()
173 		mss = tcp_mtu_to_mss(sk, icsk->icsk_mtup.search_low) >> 1;  in tcp_mtu_probing()
177 		icsk->icsk_mtup.search_low = tcp_mss_to_mtu(sk, mss);  in tcp_mtu_probing()
179 	tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);  in tcp_mtu_probing()
233 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_write_timeout()  local
240 		if (icsk->icsk_retransmits)  in tcp_write_timeout()
242 		retry_until = icsk->icsk_syn_retries ? :  in tcp_write_timeout()
244 		expired = icsk->icsk_retransmits >= retry_until;  in tcp_write_timeout()
248 			tcp_mtu_probing(icsk, sk);  in tcp_write_timeout()
255 			const bool alive = icsk->icsk_rto < TCP_RTO_MAX;  in tcp_write_timeout()
267 						icsk->icsk_user_timeout);  in tcp_write_timeout()
272 				  icsk->icsk_retransmits,  in tcp_write_timeout()
273 				  icsk->icsk_rto, (int)expired);  in tcp_write_timeout()
292 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_delack_timer_handler()  local
295 	    !(icsk->icsk_ack.pending & ICSK_ACK_TIMER))  in tcp_delack_timer_handler()
298 	if (time_after(icsk->icsk_ack.timeout, jiffies)) {  in tcp_delack_timer_handler()
299 		sk_reset_timer(sk, &icsk->icsk_delack_timer, icsk->icsk_ack.timeout);  in tcp_delack_timer_handler()
302 	icsk->icsk_ack.pending &= ~ICSK_ACK_TIMER;  in tcp_delack_timer_handler()
307 			icsk->icsk_ack.ato = min(icsk->icsk_ack.ato << 1, icsk->icsk_rto);  in tcp_delack_timer_handler()
313 			icsk->icsk_ack.ato      = TCP_ATO_MIN;  in tcp_delack_timer_handler()
333 	struct inet_connection_sock *icsk =  in tcp_delack_timer()  local
334 			from_timer(icsk, t, icsk_delack_timer);  in tcp_delack_timer()
335 	struct sock *sk = &icsk->icsk_inet.sk;  in tcp_delack_timer()
352 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_probe_timer()  local
358 		icsk->icsk_probes_out = 0;  in tcp_probe_timer()
359 		icsk->icsk_probes_tstamp = 0;  in tcp_probe_timer()
371 	if (!icsk->icsk_probes_tstamp)  in tcp_probe_timer()
372 		icsk->icsk_probes_tstamp = tcp_jiffies32;  in tcp_probe_timer()
373 	else if (icsk->icsk_user_timeout &&  in tcp_probe_timer()
374 		 (s32)(tcp_jiffies32 - icsk->icsk_probes_tstamp) >=  in tcp_probe_timer()
375 		 msecs_to_jiffies(icsk->icsk_user_timeout))  in tcp_probe_timer()
380 		const bool alive = inet_csk_rto_backoff(icsk, TCP_RTO_MAX) < TCP_RTO_MAX;  in tcp_probe_timer()
383 		if (!alive && icsk->icsk_backoff >= max_probes)  in tcp_probe_timer()
389 	if (icsk->icsk_probes_out >= max_probes) {  in tcp_probe_timer()
403 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_fastopen_synack_timer()  local
410 	max_retries = icsk->icsk_syn_retries ? :  in tcp_fastopen_synack_timer()
418 	if (icsk->icsk_retransmits == 1)  in tcp_fastopen_synack_timer()
427 	icsk->icsk_retransmits++;  in tcp_fastopen_synack_timer()
450 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_retransmit_timer()  local
513 	if (icsk->icsk_retransmits == 0) {  in tcp_retransmit_timer()
516 		if (icsk->icsk_ca_state == TCP_CA_Recovery) {  in tcp_retransmit_timer()
521 		} else if (icsk->icsk_ca_state == TCP_CA_Loss) {  in tcp_retransmit_timer()
523 		} else if ((icsk->icsk_ca_state == TCP_CA_Disorder) ||  in tcp_retransmit_timer()
536 	icsk->icsk_retransmits++;  in tcp_retransmit_timer()
562 	icsk->icsk_backoff++;  in tcp_retransmit_timer()
577 	    icsk->icsk_retransmits <= TCP_THIN_LINEAR_RETRIES) {  in tcp_retransmit_timer()
578 		icsk->icsk_backoff = 0;  in tcp_retransmit_timer()
579 		icsk->icsk_rto = min(__tcp_set_rto(tp), TCP_RTO_MAX);  in tcp_retransmit_timer()
582 		icsk->icsk_rto = min(icsk->icsk_rto << 1, TCP_RTO_MAX);  in tcp_retransmit_timer()
596 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_write_timer_handler()  local
600 	    !icsk->icsk_pending)  in tcp_write_timer_handler()
603 	if (time_after(icsk->icsk_timeout, jiffies)) {  in tcp_write_timer_handler()
604 		sk_reset_timer(sk, &icsk->icsk_retransmit_timer, icsk->icsk_timeout);  in tcp_write_timer_handler()
609 	event = icsk->icsk_pending;  in tcp_write_timer_handler()
619 		icsk->icsk_pending = 0;  in tcp_write_timer_handler()
623 		icsk->icsk_pending = 0;  in tcp_write_timer_handler()
631 	struct inet_connection_sock *icsk =  in tcp_write_timer()  local
632 			from_timer(icsk, t, icsk_retransmit_timer);  in tcp_write_timer()
633 	struct sock *sk = &icsk->icsk_inet.sk;  in tcp_write_timer()
671 	struct inet_connection_sock *icsk = inet_csk(sk);  in tcp_keepalive_timer()  local
718 		if ((icsk->icsk_user_timeout != 0 &&  in tcp_keepalive_timer()
719 		    elapsed >= msecs_to_jiffies(icsk->icsk_user_timeout) &&  in tcp_keepalive_timer()
720 		    icsk->icsk_probes_out > 0) ||  in tcp_keepalive_timer()
721 		    (icsk->icsk_user_timeout == 0 &&  in tcp_keepalive_timer()
722 		    icsk->icsk_probes_out >= keepalive_probes(tp))) {  in tcp_keepalive_timer()
728 			icsk->icsk_probes_out++;  in tcp_keepalive_timer()