333 	struct sackblk sack, sack_blocks[TCP_MAX_SACK + 1], *sblkp;  in tcp_sack_doack()  local
406 	sblkp = &sack_blocks[num_sack_blks - 1];	/* Last SACK block */  in tcp_sack_doack()
407 	tp->sackhint.last_sack_ack = sblkp->end;  in tcp_sack_doack()
408 	if (SEQ_LT(tp->snd_fack, sblkp->start)) {  in tcp_sack_doack()
415 		temp = tcp_sackhole_insert(tp, tp->snd_fack,sblkp->start,NULL);  in tcp_sack_doack()
417 			tp->snd_fack = sblkp->end;  in tcp_sack_doack()
419 			sblkp--;  in tcp_sack_doack()
429 			while (sblkp >= sack_blocks &&  in tcp_sack_doack()
430 			       SEQ_LT(tp->snd_fack, sblkp->start))  in tcp_sack_doack()
431 				sblkp--;  in tcp_sack_doack()
432 			if (sblkp >= sack_blocks &&  in tcp_sack_doack()
433 			    SEQ_LT(tp->snd_fack, sblkp->end))  in tcp_sack_doack()
434 				tp->snd_fack = sblkp->end;  in tcp_sack_doack()
436 	} else if (SEQ_LT(tp->snd_fack, sblkp->end))  in tcp_sack_doack()
438 		tp->snd_fack = sblkp->end;  in tcp_sack_doack()
447 	while (sblkp >= sack_blocks  && cur != NULL) {  in tcp_sack_doack()
448 		if (SEQ_GEQ(sblkp->start, cur->end)) {  in tcp_sack_doack()
453 			sblkp--;  in tcp_sack_doack()
456 		if (SEQ_LEQ(sblkp->end, cur->start)) {  in tcp_sack_doack()
467 		if (SEQ_LEQ(sblkp->start, cur->start)) {  in tcp_sack_doack()
469 			if (SEQ_GEQ(sblkp->end, cur->end)) {  in tcp_sack_doack()
482 				cur->start = sblkp->end;  in tcp_sack_doack()
487 			if (SEQ_GEQ(sblkp->end, cur->end)) {  in tcp_sack_doack()
489 				cur->end = sblkp->start;  in tcp_sack_doack()
496 				temp = tcp_sackhole_insert(tp, sblkp->end,  in tcp_sack_doack()
505 					cur->end = sblkp->start;  in tcp_sack_doack()
517 		if (SEQ_LEQ(sblkp->start, cur->start))  in tcp_sack_doack()
520 			sblkp--;  in tcp_sack_doack()