273 	struct tcpcb *tp = xtp;  in tcp_timer_delack()  local
275 	CURVNET_SET(tp->t_vnet);  in tcp_timer_delack()
277 	inp = tp->t_inpcb;  in tcp_timer_delack()
278 	KASSERT(inp != NULL, ("%s: tp %p tp->t_inpcb == NULL", __func__, tp));  in tcp_timer_delack()
280 	if (callout_pending(&tp->t_timers->tt_delack) ||  in tcp_timer_delack()
281 	    !callout_active(&tp->t_timers->tt_delack)) {  in tcp_timer_delack()
286 	callout_deactivate(&tp->t_timers->tt_delack);  in tcp_timer_delack()
292 	tp->t_flags |= TF_ACKNOW;  in tcp_timer_delack()
295 	(void) tp->t_fb->tfb_tcp_output(tp);  in tcp_timer_delack()
302 tcp_inpinfo_lock_del(struct inpcb *inp, struct tcpcb *tp)  in tcp_inpinfo_lock_del()  argument
304 	if (inp && tp != NULL)  in tcp_inpinfo_lock_del()
311 	struct tcpcb *tp = xtp;  in tcp_timer_2msl()  local
314 	CURVNET_SET(tp->t_vnet);  in tcp_timer_2msl()
318 	ostate = tp->t_state;  in tcp_timer_2msl()
320 	inp = tp->t_inpcb;  in tcp_timer_2msl()
321 	KASSERT(inp != NULL, ("%s: tp %p tp->t_inpcb == NULL", __func__, tp));  in tcp_timer_2msl()
323 	tcp_free_sackholes(tp);  in tcp_timer_2msl()
324 	if (callout_pending(&tp->t_timers->tt_2msl) ||  in tcp_timer_2msl()
325 	    !callout_active(&tp->t_timers->tt_2msl)) {  in tcp_timer_2msl()
326 		INP_WUNLOCK(tp->t_inpcb);  in tcp_timer_2msl()
330 	callout_deactivate(&tp->t_timers->tt_2msl);  in tcp_timer_2msl()
336 	KASSERT((tp->t_timers->tt_flags & TT_STOPPED) == 0,  in tcp_timer_2msl()
337 		("%s: tp %p tcpcb can't be stopped here", __func__, tp));  in tcp_timer_2msl()
356 	if (tcp_fast_finwait2_recycle && tp->t_state == TCPS_FIN_WAIT_2 &&  in tcp_timer_2msl()
357 	    tp->t_inpcb && tp->t_inpcb->inp_socket &&  in tcp_timer_2msl()
358 	    (tp->t_inpcb->inp_socket->so_rcv.sb_state & SBS_CANTRCVMORE)) {  in tcp_timer_2msl()
361 			tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_2msl()
365 		tp = tcp_close(tp);  in tcp_timer_2msl()
367 		tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_2msl()
370 		if (ticks - tp->t_rcvtime <= TP_MAXIDLE(tp)) {  in tcp_timer_2msl()
371 			callout_reset(&tp->t_timers->tt_2msl,  in tcp_timer_2msl()
372 				      TP_KEEPINTVL(tp), tcp_timer_2msl, tp);  in tcp_timer_2msl()
375 				tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_2msl()
379 			tp = tcp_close(tp);  in tcp_timer_2msl()
381 			tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_2msl()
387 	if (tp != NULL && (tp->t_inpcb->inp_socket->so_options & SO_DEBUG))  in tcp_timer_2msl()
388 		tcp_trace(TA_USER, ostate, tp, (void *)0, (struct tcphdr *)0,  in tcp_timer_2msl()
391 	TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);  in tcp_timer_2msl()
393 	if (tp != NULL)  in tcp_timer_2msl()
402 	struct tcpcb *tp = xtp;  in tcp_timer_keep()  local
406 	CURVNET_SET(tp->t_vnet);  in tcp_timer_keep()
410 	ostate = tp->t_state;  in tcp_timer_keep()
412 	inp = tp->t_inpcb;  in tcp_timer_keep()
413 	KASSERT(inp != NULL, ("%s: tp %p tp->t_inpcb == NULL", __func__, tp));  in tcp_timer_keep()
415 	if (callout_pending(&tp->t_timers->tt_keep) ||  in tcp_timer_keep()
416 	    !callout_active(&tp->t_timers->tt_keep)) {  in tcp_timer_keep()
421 	callout_deactivate(&tp->t_timers->tt_keep);  in tcp_timer_keep()
427 	KASSERT((tp->t_timers->tt_flags & TT_STOPPED) == 0,  in tcp_timer_keep()
428 		("%s: tp %p tcpcb can't be stopped here", __func__, tp));  in tcp_timer_keep()
436 	if (TCPS_HAVEESTABLISHED(tp->t_state)) {  in tcp_timer_keep()
439 		idletime = ticks - tp->t_rcvtime;  in tcp_timer_keep()
440 		if (idletime < TP_KEEPIDLE(tp)) {  in tcp_timer_keep()
441 			callout_reset(&tp->t_timers->tt_keep,  in tcp_timer_keep()
442 			    TP_KEEPIDLE(tp) - idletime, tcp_timer_keep, tp);  in tcp_timer_keep()
454 	if (tp->t_state < TCPS_ESTABLISHED)  in tcp_timer_keep()
458 	    tp->t_state <= TCPS_CLOSING) {  in tcp_timer_keep()
459 		if (ticks - tp->t_rcvtime >= TP_KEEPIDLE(tp) + TP_MAXIDLE(tp))  in tcp_timer_keep()
477 			tcp_respond(tp, t_template->tt_ipgen,  in tcp_timer_keep()
479 				    tp->rcv_nxt, tp->snd_una - 1, 0);  in tcp_timer_keep()
483 		callout_reset(&tp->t_timers->tt_keep, TP_KEEPINTVL(tp),  in tcp_timer_keep()
484 			      tcp_timer_keep, tp);  in tcp_timer_keep()
486 		callout_reset(&tp->t_timers->tt_keep, TP_KEEPIDLE(tp),  in tcp_timer_keep()
487 			      tcp_timer_keep, tp);  in tcp_timer_keep()
491 		tcp_trace(TA_USER, ostate, tp, (void *)0, (struct tcphdr *)0,  in tcp_timer_keep()
494 	TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);  in tcp_timer_keep()
502 		tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_keep()
506 	tp = tcp_drop(tp, ETIMEDOUT);  in tcp_timer_keep()
509 	if (tp != NULL && (tp->t_inpcb->inp_socket->so_options & SO_DEBUG))  in tcp_timer_keep()
510 		tcp_trace(TA_USER, ostate, tp, (void *)0, (struct tcphdr *)0,  in tcp_timer_keep()
513 	TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);  in tcp_timer_keep()
515 	tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_keep()
523 	struct tcpcb *tp = xtp;  in tcp_timer_persist()  local
526 	CURVNET_SET(tp->t_vnet);  in tcp_timer_persist()
530 	ostate = tp->t_state;  in tcp_timer_persist()
532 	inp = tp->t_inpcb;  in tcp_timer_persist()
533 	KASSERT(inp != NULL, ("%s: tp %p tp->t_inpcb == NULL", __func__, tp));  in tcp_timer_persist()
535 	if (callout_pending(&tp->t_timers->tt_persist) ||  in tcp_timer_persist()
536 	    !callout_active(&tp->t_timers->tt_persist)) {  in tcp_timer_persist()
541 	callout_deactivate(&tp->t_timers->tt_persist);  in tcp_timer_persist()
547 	KASSERT((tp->t_timers->tt_flags & TT_STOPPED) == 0,  in tcp_timer_persist()
548 		("%s: tp %p tcpcb can't be stopped here", __func__, tp));  in tcp_timer_persist()
561 	if (tp->t_rxtshift == TCP_MAXRXTSHIFT &&  in tcp_timer_persist()
562 	    (ticks - tp->t_rcvtime >= tcp_maxpersistidle ||  in tcp_timer_persist()
563 	     ticks - tp->t_rcvtime >= TCP_REXMTVAL(tp) * tcp_totbackoff)) {  in tcp_timer_persist()
566 			tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_persist()
570 		tp = tcp_drop(tp, ETIMEDOUT);  in tcp_timer_persist()
572 		tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_persist()
579 	if (tp->t_state > TCPS_CLOSE_WAIT &&  in tcp_timer_persist()
580 	    (ticks - tp->t_rcvtime) >= TCPTV_PERSMAX) {  in tcp_timer_persist()
583 			tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_persist()
587 		tp = tcp_drop(tp, ETIMEDOUT);  in tcp_timer_persist()
589 		tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_persist()
592 	tcp_setpersist(tp);  in tcp_timer_persist()
593 	tp->t_flags |= TF_FORCEDATA;  in tcp_timer_persist()
595 	(void) tp->t_fb->tfb_tcp_output(tp);  in tcp_timer_persist()
597 	tp->t_flags &= ~TF_FORCEDATA;  in tcp_timer_persist()
600 	if (tp != NULL && tp->t_inpcb->inp_socket->so_options & SO_DEBUG)  in tcp_timer_persist()
601 		tcp_trace(TA_USER, ostate, tp, NULL, NULL, PRU_SLOWTIMO);  in tcp_timer_persist()
603 	TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);  in tcp_timer_persist()
612 	struct tcpcb *tp = xtp;  in tcp_timer_rexmt()  local
613 	CURVNET_SET(tp->t_vnet);  in tcp_timer_rexmt()
621 	ostate = tp->t_state;  in tcp_timer_rexmt()
623 	inp = tp->t_inpcb;  in tcp_timer_rexmt()
624 	KASSERT(inp != NULL, ("%s: tp %p tp->t_inpcb == NULL", __func__, tp));  in tcp_timer_rexmt()
626 	if (callout_pending(&tp->t_timers->tt_rexmt) ||  in tcp_timer_rexmt()
627 	    !callout_active(&tp->t_timers->tt_rexmt)) {  in tcp_timer_rexmt()
632 	callout_deactivate(&tp->t_timers->tt_rexmt);  in tcp_timer_rexmt()
638 	KASSERT((tp->t_timers->tt_flags & TT_STOPPED) == 0,  in tcp_timer_rexmt()
639 		("%s: tp %p tcpcb can't be stopped here", __func__, tp));  in tcp_timer_rexmt()
640 	tcp_free_sackholes(tp);  in tcp_timer_rexmt()
641 	TCP_LOG_EVENT(tp, NULL, NULL, NULL, TCP_LOG_RTO, 0, 0, NULL, false);  in tcp_timer_rexmt()
642 	if (tp->t_fb->tfb_tcp_rexmit_tmr) {  in tcp_timer_rexmt()
644 		(*tp->t_fb->tfb_tcp_rexmit_tmr)(tp);  in tcp_timer_rexmt()
651 	if (++tp->t_rxtshift > TCP_MAXRXTSHIFT) {  in tcp_timer_rexmt()
652 		tp->t_rxtshift = TCP_MAXRXTSHIFT;  in tcp_timer_rexmt()
655 			tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_rexmt()
659 		tp = tcp_drop(tp, ETIMEDOUT);  in tcp_timer_rexmt()
661 		tcp_inpinfo_lock_del(inp, tp);  in tcp_timer_rexmt()
664 	if (tp->t_state == TCPS_SYN_SENT) {  in tcp_timer_rexmt()
669 		tp->snd_cwnd = 1;  in tcp_timer_rexmt()
670 	} else if (tp->t_rxtshift == 1) {  in tcp_timer_rexmt()
680 		tp->snd_cwnd_prev = tp->snd_cwnd;  in tcp_timer_rexmt()
681 		tp->snd_ssthresh_prev = tp->snd_ssthresh;  in tcp_timer_rexmt()
682 		tp->snd_recover_prev = tp->snd_recover;  in tcp_timer_rexmt()
683 		if (IN_FASTRECOVERY(tp->t_flags))  in tcp_timer_rexmt()
684 			tp->t_flags |= TF_WASFRECOVERY;  in tcp_timer_rexmt()
686 			tp->t_flags &= ~TF_WASFRECOVERY;  in tcp_timer_rexmt()
687 		if (IN_CONGRECOVERY(tp->t_flags))  in tcp_timer_rexmt()
688 			tp->t_flags |= TF_WASCRECOVERY;  in tcp_timer_rexmt()
690 			tp->t_flags &= ~TF_WASCRECOVERY;  in tcp_timer_rexmt()
691 		if ((tp->t_flags & TF_RCVD_TSTMP) == 0)  in tcp_timer_rexmt()
692 			tp->t_badrxtwin = ticks + (tp->t_srtt >> (TCP_RTT_SHIFT + 1));  in tcp_timer_rexmt()
697 		tp->t_flags |= TF_PREVVALID;  in tcp_timer_rexmt()
699 		tp->t_flags &= ~TF_PREVVALID;  in tcp_timer_rexmt()
701 	if ((tp->t_state == TCPS_SYN_SENT) ||  in tcp_timer_rexmt()
702 	    (tp->t_state == TCPS_SYN_RECEIVED))  in tcp_timer_rexmt()
703 		rexmt = tcp_rexmit_initial * tcp_backoff[tp->t_rxtshift];  in tcp_timer_rexmt()
705 		rexmt = TCP_REXMTVAL(tp) * tcp_backoff[tp->t_rxtshift];  in tcp_timer_rexmt()
706 	TCPT_RANGESET(tp->t_rxtcur, rexmt,  in tcp_timer_rexmt()
707 		      tp->t_rttmin, TCPTV_REXMTMAX);  in tcp_timer_rexmt()
717 	isipv6 = (tp->t_inpcb->inp_vflag & INP_IPV6) ? true : false;  in tcp_timer_rexmt()
724 	    ((tp->t_state == TCPS_ESTABLISHED) ||  in tcp_timer_rexmt()
725 	    (tp->t_state == TCPS_FIN_WAIT_1))) {  in tcp_timer_rexmt()
726 		if (tp->t_rxtshift == 1) {  in tcp_timer_rexmt()
735 			tp->t_blackhole_enter = 2;  in tcp_timer_rexmt()
736 			tp->t_blackhole_exit = tp->t_blackhole_enter;  in tcp_timer_rexmt()
739 				if (tp->t_maxseg > V_tcp_v6pmtud_blackhole_mss)  in tcp_timer_rexmt()
740 					tp->t_blackhole_exit += 2;  in tcp_timer_rexmt()
741 				if (tp->t_maxseg > V_tcp_v6mssdflt &&  in tcp_timer_rexmt()
743 					tp->t_blackhole_exit += 2;  in tcp_timer_rexmt()
747 				if (tp->t_maxseg > V_tcp_pmtud_blackhole_mss)  in tcp_timer_rexmt()
748 					tp->t_blackhole_exit += 2;  in tcp_timer_rexmt()
749 				if (tp->t_maxseg > V_tcp_mssdflt &&  in tcp_timer_rexmt()
751 					tp->t_blackhole_exit += 2;  in tcp_timer_rexmt()
755 		if (((tp->t_flags2 & (TF2_PLPMTU_PMTUD|TF2_PLPMTU_MAXSEGSNT)) ==  in tcp_timer_rexmt()
757 		    (tp->t_rxtshift >= tp->t_blackhole_enter &&  in tcp_timer_rexmt()
758 		    tp->t_rxtshift < tp->t_blackhole_exit &&  in tcp_timer_rexmt()
759 		    (tp->t_rxtshift - tp->t_blackhole_enter) % 2 == 0)) {  in tcp_timer_rexmt()
766 			if ((tp->t_flags2 & TF2_PLPMTU_BLACKHOLE) == 0) {  in tcp_timer_rexmt()
768 				tp->t_flags2 |= TF2_PLPMTU_BLACKHOLE;  in tcp_timer_rexmt()
770 				tp->t_pmtud_saved_maxseg = tp->t_maxseg;  in tcp_timer_rexmt()
779 			    tp->t_maxseg > V_tcp_v6pmtud_blackhole_mss &&  in tcp_timer_rexmt()
782 				tp->t_maxseg = V_tcp_v6pmtud_blackhole_mss;  in tcp_timer_rexmt()
786 				tp->t_maxseg = V_tcp_v6mssdflt;  in tcp_timer_rexmt()
791 				tp->t_flags2 &= ~TF2_PLPMTU_PMTUD;  in tcp_timer_rexmt()
799 			if (tp->t_maxseg > V_tcp_pmtud_blackhole_mss &&  in tcp_timer_rexmt()
802 				tp->t_maxseg = V_tcp_pmtud_blackhole_mss;  in tcp_timer_rexmt()
806 				tp->t_maxseg = V_tcp_mssdflt;  in tcp_timer_rexmt()
811 				tp->t_flags2 &= ~TF2_PLPMTU_PMTUD;  in tcp_timer_rexmt()
819 			if (CC_ALGO(tp)->conn_init != NULL)  in tcp_timer_rexmt()
820 				CC_ALGO(tp)->conn_init(tp->ccv);  in tcp_timer_rexmt()
828 			if ((tp->t_flags2 & TF2_PLPMTU_BLACKHOLE) &&  in tcp_timer_rexmt()
829 			    (tp->t_rxtshift >= tp->t_blackhole_exit)) {  in tcp_timer_rexmt()
830 				tp->t_flags2 |= TF2_PLPMTU_PMTUD;  in tcp_timer_rexmt()
831 				tp->t_flags2 &= ~TF2_PLPMTU_BLACKHOLE;  in tcp_timer_rexmt()
832 				tp->t_maxseg = tp->t_pmtud_saved_maxseg;  in tcp_timer_rexmt()
838 				if (CC_ALGO(tp)->conn_init != NULL)  in tcp_timer_rexmt()
839 					CC_ALGO(tp)->conn_init(tp->ccv);  in tcp_timer_rexmt()
851 	if (tcp_rexmit_drop_options && (tp->t_state == TCPS_SYN_SENT) &&  in tcp_timer_rexmt()
852 	    (tp->t_rxtshift == 3))  in tcp_timer_rexmt()
853 		tp->t_flags &= ~(TF_REQ_SCALE|TF_REQ_TSTMP|TF_SACK_PERMIT);  in tcp_timer_rexmt()
858 	if (tp->t_rxtshift > TCP_RTT_INVALIDATE) {  in tcp_timer_rexmt()
860 		if ((tp->t_inpcb->inp_vflag & INP_IPV6) != 0)  in tcp_timer_rexmt()
861 			in6_losing(tp->t_inpcb);  in tcp_timer_rexmt()
864 			in_losing(tp->t_inpcb);  in tcp_timer_rexmt()
866 	tp->snd_nxt = tp->snd_una;  in tcp_timer_rexmt()
867 	tp->snd_recover = tp->snd_max;  in tcp_timer_rexmt()
871 	tp->t_flags |= TF_ACKNOW;  in tcp_timer_rexmt()
875 	tp->t_rtttime = 0;  in tcp_timer_rexmt()
877 	cc_cong_signal(tp, NULL, CC_RTO);  in tcp_timer_rexmt()
879 	(void) tp->t_fb->tfb_tcp_output(tp);  in tcp_timer_rexmt()
882 	if (tp != NULL && (tp->t_inpcb->inp_socket->so_options & SO_DEBUG))  in tcp_timer_rexmt()
883 		tcp_trace(TA_USER, ostate, tp, (void *)0, (struct tcphdr *)0,  in tcp_timer_rexmt()
886 	TCP_PROBE2(debug__user, tp, PRU_SLOWTIMO);  in tcp_timer_rexmt()
893 tcp_timer_activate(struct tcpcb *tp, uint32_t timer_type, u_int delta)  in tcp_timer_activate()  argument
897 	struct inpcb *inp = tp->t_inpcb;  in tcp_timer_activate()
901 	if (tp->t_flags & TF_TOE)  in tcp_timer_activate()
905 	if (tp->t_timers->tt_flags & TT_STOPPED)  in tcp_timer_activate()
910 			t_callout = &tp->t_timers->tt_delack;  in tcp_timer_activate()
914 			t_callout = &tp->t_timers->tt_rexmt;  in tcp_timer_activate()
918 			t_callout = &tp->t_timers->tt_persist;  in tcp_timer_activate()
922 			t_callout = &tp->t_timers->tt_keep;  in tcp_timer_activate()
926 			t_callout = &tp->t_timers->tt_2msl;  in tcp_timer_activate()
930 			if (tp->t_fb->tfb_tcp_timer_activate) {  in tcp_timer_activate()
931 				tp->t_fb->tfb_tcp_timer_activate(tp, timer_type, delta);  in tcp_timer_activate()
934 			panic("tp %p bad timer_type %#x", tp, timer_type);  in tcp_timer_activate()
939 		callout_reset_on(t_callout, delta, f_callout, tp, cpu);  in tcp_timer_activate()
944 tcp_timer_active(struct tcpcb *tp, uint32_t timer_type)  in tcp_timer_active()  argument
950 			t_callout = &tp->t_timers->tt_delack;  in tcp_timer_active()
953 			t_callout = &tp->t_timers->tt_rexmt;  in tcp_timer_active()
956 			t_callout = &tp->t_timers->tt_persist;  in tcp_timer_active()
959 			t_callout = &tp->t_timers->tt_keep;  in tcp_timer_active()
962 			t_callout = &tp->t_timers->tt_2msl;  in tcp_timer_active()
965 			if (tp->t_fb->tfb_tcp_timer_active) {  in tcp_timer_active()
966 				return(tp->t_fb->tfb_tcp_timer_active(tp, timer_type));  in tcp_timer_active()
968 			panic("tp %p bad timer_type %#x", tp, timer_type);  in tcp_timer_active()
982 tcp_timer_suspend(struct tcpcb *tp, uint32_t timer_type)  in tcp_timer_suspend()  argument
990 			t_callout = &tp->t_timers->tt_delack;  in tcp_timer_suspend()
994 			t_callout = &tp->t_timers->tt_rexmt;  in tcp_timer_suspend()
998 			t_callout = &tp->t_timers->tt_persist;  in tcp_timer_suspend()
1002 			t_callout = &tp->t_timers->tt_keep;  in tcp_timer_suspend()
1006 			t_callout = &tp->t_timers->tt_2msl;  in tcp_timer_suspend()
1009 			panic("tp:%p bad timer_type 0x%x", tp, timer_type);  in tcp_timer_suspend()
1011 	tp->t_timers->tt_flags |= t_flags;  in tcp_timer_suspend()
1016 tcp_timers_unsuspend(struct tcpcb *tp, uint32_t timer_type)  in tcp_timers_unsuspend()  argument
1020 			if (tp->t_timers->tt_flags & TT_DELACK_SUS) {  in tcp_timers_unsuspend()
1021 				tp->t_timers->tt_flags &= ~TT_DELACK_SUS;  in tcp_timers_unsuspend()
1022 				if (tp->t_flags & TF_DELACK) {  in tcp_timers_unsuspend()
1024 					tp->t_flags &= ~TF_DELACK;  in tcp_timers_unsuspend()
1025 					tcp_timer_activate(tp, TT_DELACK,  in tcp_timers_unsuspend()
1031 			if (tp->t_timers->tt_flags & TT_REXMT_SUS) {  in tcp_timers_unsuspend()
1032 				tp->t_timers->tt_flags &= ~TT_REXMT_SUS;  in tcp_timers_unsuspend()
1033 				if (SEQ_GT(tp->snd_max, tp->snd_una) &&  in tcp_timers_unsuspend()
1034 				    (tcp_timer_active((tp), TT_PERSIST) == 0) &&  in tcp_timers_unsuspend()
1035 				    tp->snd_wnd) {  in tcp_timers_unsuspend()
1037 					tcp_timer_activate(tp, TT_REXMT,  in tcp_timers_unsuspend()
1038                                             tp->t_rxtcur);  in tcp_timers_unsuspend()
1043 			if (tp->t_timers->tt_flags & TT_PERSIST_SUS) {  in tcp_timers_unsuspend()
1044 				tp->t_timers->tt_flags &= ~TT_PERSIST_SUS;  in tcp_timers_unsuspend()
1045 				if (tp->snd_wnd == 0) {  in tcp_timers_unsuspend()
1047 					tp->t_rxtshift = 0;  in tcp_timers_unsuspend()
1048 					tcp_setpersist(tp);  in tcp_timers_unsuspend()
1053 			if (tp->t_timers->tt_flags & TT_KEEP_SUS) {  in tcp_timers_unsuspend()
1054 				tp->t_timers->tt_flags &= ~TT_KEEP_SUS;  in tcp_timers_unsuspend()
1055 				tcp_timer_activate(tp, TT_KEEP,  in tcp_timers_unsuspend()
1056 					    TCPS_HAVEESTABLISHED(tp->t_state) ?  in tcp_timers_unsuspend()
1057 					    TP_KEEPIDLE(tp) : TP_KEEPINIT(tp));  in tcp_timers_unsuspend()
1061 			if (tp->t_timers->tt_flags &= TT_2MSL_SUS) {  in tcp_timers_unsuspend()
1062 				tp->t_timers->tt_flags &= ~TT_2MSL_SUS;  in tcp_timers_unsuspend()
1063 				if ((tp->t_state == TCPS_FIN_WAIT_2) &&  in tcp_timers_unsuspend()
1064 				    ((tp->t_inpcb->inp_socket == NULL) ||  in tcp_timers_unsuspend()
1065 				     (tp->t_inpcb->inp_socket->so_rcv.sb_state & SBS_CANTRCVMORE))) {  in tcp_timers_unsuspend()
1067 					tcp_timer_activate(tp, TT_2MSL,  in tcp_timers_unsuspend()
1069 					    tcp_finwait2_timeout : TP_MAXIDLE(tp));  in tcp_timers_unsuspend()
1074 			panic("tp:%p bad timer_type 0x%x", tp, timer_type);  in tcp_timers_unsuspend()
1079 tcp_timer_stop(struct tcpcb *tp, uint32_t timer_type)  in tcp_timer_stop()  argument
1083 	tp->t_timers->tt_flags |= TT_STOPPED;  in tcp_timer_stop()
1086 			t_callout = &tp->t_timers->tt_delack;  in tcp_timer_stop()
1089 			t_callout = &tp->t_timers->tt_rexmt;  in tcp_timer_stop()
1092 			t_callout = &tp->t_timers->tt_persist;  in tcp_timer_stop()
1095 			t_callout = &tp->t_timers->tt_keep;  in tcp_timer_stop()
1098 			t_callout = &tp->t_timers->tt_2msl;  in tcp_timer_stop()
1101 			if (tp->t_fb->tfb_tcp_timer_stop) {  in tcp_timer_stop()
1106 				tp->t_fb->tfb_tcp_timer_stop(tp, timer_type);  in tcp_timer_stop()
1109 			panic("tp %p bad timer_type %#x", tp, timer_type);  in tcp_timer_stop()
1118 		tp->t_timers->tt_draincnt++;  in tcp_timer_stop()