467 	struct sackhole *hole;  in tcp_sackhole_alloc()  local
475 	hole = (struct sackhole *)uma_zalloc(V_sack_hole_zone, M_NOWAIT);  in tcp_sackhole_alloc()
476 	if (hole == NULL)  in tcp_sackhole_alloc()
479 	hole->start = start;  in tcp_sackhole_alloc()
480 	hole->end = end;  in tcp_sackhole_alloc()
481 	hole->rxmit = start;  in tcp_sackhole_alloc()
486 	return hole;  in tcp_sackhole_alloc()
493 tcp_sackhole_free(struct tcpcb *tp, struct sackhole *hole)  in tcp_sackhole_free()  argument
496 	uma_zfree(V_sack_hole_zone, hole);  in tcp_sackhole_free()
512 	struct sackhole *hole;  in tcp_sackhole_insert()  local
515 	hole = tcp_sackhole_alloc(tp, start, end);  in tcp_sackhole_insert()
516 	if (hole == NULL)  in tcp_sackhole_insert()
521 		TAILQ_INSERT_AFTER(&tp->snd_holes, after, hole, scblink);  in tcp_sackhole_insert()
523 		TAILQ_INSERT_TAIL(&tp->snd_holes, hole, scblink);  in tcp_sackhole_insert()
527 		tp->sackhint.nexthole = hole;  in tcp_sackhole_insert()
529 	return hole;  in tcp_sackhole_insert()
536 tcp_sackhole_remove(struct tcpcb *tp, struct sackhole *hole)  in tcp_sackhole_remove()  argument
540 	if (tp->sackhint.nexthole == hole)  in tcp_sackhole_remove()
541 		tp->sackhint.nexthole = TAILQ_NEXT(hole, scblink);  in tcp_sackhole_remove()
544 	TAILQ_REMOVE(&tp->snd_holes, hole, scblink);  in tcp_sackhole_remove()
547 	tcp_sackhole_free(tp, hole);  in tcp_sackhole_remove()
1046 	struct sackhole *hole = NULL;  in tcp_sack_output()  local
1050 	hole = tp->sackhint.nexthole;  in tcp_sack_output()
1051 	if (hole == NULL)  in tcp_sack_output()
1052 		return (hole);  in tcp_sack_output()
1053 	if (SEQ_GEQ(hole->rxmit, hole->end)) {  in tcp_sack_output()
1055 			hole = TAILQ_NEXT(hole, scblink);  in tcp_sack_output()
1056 			if (hole == NULL)  in tcp_sack_output()
1057 				return (hole);  in tcp_sack_output()
1058 			if (SEQ_LT(hole->rxmit, hole->end)) {  in tcp_sack_output()
1059 				tp->sackhint.nexthole = hole;  in tcp_sack_output()
1064 	KASSERT(SEQ_LT(hole->start, hole->end), ("%s: hole.start >= hole.end", __func__));  in tcp_sack_output()
1066 		KASSERT(SEQ_LT(hole->start, tp->snd_fack), ("%s: hole.start >= snd.fack", __func__));  in tcp_sack_output()
1067 		KASSERT(SEQ_LT(hole->end, tp->snd_fack), ("%s: hole.end >= snd.fack", __func__));  in tcp_sack_output()
1068 		KASSERT(SEQ_LT(hole->rxmit, tp->snd_fack), ("%s: hole.rxmit >= snd.fack", __func__));  in tcp_sack_output()
1069 		if (SEQ_GEQ(hole->start, hole->end) ||  in tcp_sack_output()
1070 		    SEQ_GEQ(hole->start, tp->snd_fack) ||  in tcp_sack_output()
1071 		    SEQ_GEQ(hole->end, tp->snd_fack) ||  in tcp_sack_output()
1072 		    SEQ_GEQ(hole->rxmit, tp->snd_fack)) {  in tcp_sack_output()
1074 					hole->start, hole->end, hole->rxmit, tp->snd_fack);  in tcp_sack_output()
1078 	return (hole);  in tcp_sack_output()