bsd/netinet/tcp_sack.c

143 	head_blk.end = rcv_end;
153 		tcp_seq end = tp->sackblks[i].end;
154 		if (SEQ_GEQ(start, end) || SEQ_LEQ(start, tp->rcv_nxt)) {
158 		} else if (SEQ_LEQ(head_blk.start, end) &&
159 			   SEQ_GEQ(head_blk.end, start)) {
166 			if (SEQ_LT(head_blk.end, end))
167 				head_blk.end = end;
173 			saved_blks[num_saved].end = end;
235 tcp_sackhole_alloc(struct tcpcb *tp, tcp_seq start, tcp_seq end)
250 	hole->end = end;
275 tcp_sackhole_insert(struct tcpcb *tp, tcp_seq start, tcp_seq end,
281 	hole = tcp_sackhole_alloc(tp, start, end);
334 		sack_blocks[num_sack_blks++].end = th_ack;
344 			sack.end = ntohl(sack.end);
345 			if (SEQ_GT(sack.end, sack.start) &&
349 			    SEQ_GT(sack.end, tp->snd_una) &&
350 			    SEQ_LEQ(sack.end, tp->snd_max))
368 			if (SEQ_GT(sack_blocks[i].end, sack_blocks[j].end)) {
405 			tp->snd_fack = sblkp->end;
421 			    SEQ_LT(tp->snd_fack, sblkp->end))
422 				tp->snd_fack = sblkp->end;
424 	} else if (SEQ_LT(tp->snd_fack, sblkp->end))
426 		tp->snd_fack = sblkp->end;
434 		if (SEQ_GEQ(sblkp->start, cur->end)) {
442 		if (SEQ_LEQ(sblkp->end, cur->start)) {
453 			if (SEQ_GEQ(sblkp->end, cur->end)) {
465 				cur->start = sblkp->end;
469 			/* Data acks at least the end of hole */
470 			if (SEQ_GEQ(sblkp->end, cur->end)) {
471 				/* Move end of hole backward */
472 				cur->end = sblkp->start;
473 				cur->rxmit = SEQ_MIN(cur->rxmit, cur->end);
479 				temp = tcp_sackhole_insert(tp, sblkp->end,
480 							   cur->end, cur);
488 					cur->end = sblkp->start;
490 							     cur->end);
565 		if (SEQ_LT(p->rxmit, p->end)) {
586  * with (rxmit == end). But, for all holes following the current hint,
589  * one node following the current hint with (start == rxmit == end).
590  * But that can't happen, (start == end) means that all the data in that hole
603 	if (hole == NULL || SEQ_LT(hole->rxmit, hole->end))
606 		if (SEQ_LT(hole->rxmit, hole->end)) {
641 	 * i) snd_nxt lies between end of one hole and beginning of another
642 	 * ii) snd_nxt lies between end of last hole and snd_fack
645 		if (SEQ_LT(tp->snd_nxt, cur->end))
654 	if (SEQ_LT(tp->snd_nxt, cur->end))