net/ipv4/tcp_input.c

548 /* 3. Try to fixup all. It is made immediately after connection enters
588 /* 4. Recalculate window clamp after socket hit its memory bounds. */
911 		if (after(tp->snd_una, tp->rtt_seq)) {
1231  * similar case (end_seq after snd_nxt wrap) as earlier reversed check in
1252 	if (after(end_seq, tp->snd_nxt) || !before(start_seq, end_seq))
1262 	if (after(start_seq, tp->snd_una))
1269 	if (after(end_seq, tp->snd_una))
1276 	if (!after(end_seq, tp->undo_marker))
1300 		if (after(end_seq_0, end_seq_1) || before(start_seq_0, start_seq_1))
1317 	    !after(end_seq_0, prior_snd_una) &&
1318 	    after(end_seq_0, tp->undo_marker))
1340 	in_sack = !after(start_seq, TCP_SKB_CB(skb)->seq) &&
1344 	    after(TCP_SKB_CB(skb)->end_seq, start_seq)) {
1346 		in_sack = !after(start_seq, TCP_SKB_CB(skb)->seq);
1392 		    after(end_seq, tp->undo_marker))
1400 	if (!after(end_seq, tp->snd_una))
1426 				if (!after(end_seq, tp->high_seq))
1501 	 * code can come after this skb later on it's better to keep
1599 	if (!after(TCP_SKB_CB(skb)->end_seq, tp->snd_una))
1613 	in_sack = !after(start_seq, TCP_SKB_CB(skb)->seq) &&
1627 		if (!after(TCP_SKB_CB(skb)->end_seq, start_seq))
1636 		in_sack = !after(start_seq, TCP_SKB_CB(skb)->seq);
1639 			 * if (!after(TCP_SKB_CB(skb)->end_seq, end_seq)),
1679 	if (!after(TCP_SKB_CB(skb)->seq + len, tp->snd_una))
1814 	if (skb && after(TCP_SKB_CB(skb)->seq, skip_to_seq))
1901 				    !after(sp[used_sacks].end_seq, tp->snd_una))
1913 		if (!after(sp[used_sacks].end_seq, prior_snd_una)) {
1925 			if (after(sp[j].start_seq, sp[j + 1].start_seq)) {
1966 		    after(end_seq, cache->start_seq)) {
1979 			if (!after(end_seq, cache->end_seq))
2189 	    !after(tp->high_seq, tp->snd_una) ||
2201 	/* Timeout in disordered state after receiving substantial DUPACKs
2309  *	F.e. after RTO, when all the queue is considered as lost,
2326  *		after RTT + reordering_window, where both metrics are
2394 		if (mark_head && after(TCP_SKB_CB(skb)->seq, tp->snd_una))
2408 		if (after(TCP_SKB_CB(skb)->end_seq, loss_high))
2618 /* Undo during loss recovery after partial ACK or using F-RTO. */
2894 		if (after(tp->snd_nxt, tp->high_seq)) {
2904 			    after(tcp_wnd_end(tp), tp->snd_nxt)) {
2921 		if (after(tp->snd_nxt, tp->high_seq) && num_dupack)
2933 	return after(tcp_highest_sack_seq(tp),
2937 /* Undo during fast recovery after partial ACK. */
3200 /* Restart timer after forward progress on connection.
3218 		/* Offset the time elapsed after installing regular RTO */
3245 	BUG_ON(!after(TCP_SKB_CB(skb)->end_seq, tp->snd_una));
3309 		if (after(scb->end_seq, tp->snd_una)) {
3311 			    !after(tp->snd_una, scb->seq))
3334 			if (!after(scb->end_seq, tp->high_seq))
3418 			     !after(tp->mtu_probe.probe_seq_end, tp->snd_una))) {
3447 		 * after when the head was last (re)transmitted. Otherwise the
3497 	if (!after(TCP_SKB_CB(head)->end_seq, tcp_wnd_end(tp))) {
3566 	return	after(ack, tp->snd_una) ||
3567 		after(ack_seq, tp->snd_wl1) ||
3751 	if (tp->rx_opt.saw_tstamp && !after(seq, tp->rcv_wup)) {
3780 	} else if (after(ack, tp->tlp_high_seq)) {
3819 		if (after(tp->snd_nxt, tp->high_seq))
3886 	if (after(ack, tp->snd_nxt))
3889 	if (after(ack, prior_snd_una)) {
3903 	/* ts_recent update must be made after we are sure that the packet
3952 	 * "When the TCP data sender is ready to set the CWR bit after reducing
4360  * states that events when retransmit arrives after original data are rare.
4417  * fits to the window after truncation to the window. Acceptability
4433 	if (after(seq, tp->rcv_nxt + tcp_receive_window(tp)))
4558 	if (!after(seq, sp->end_seq) && !after(sp->start_seq, end_seq)) {
4561 		if (after(end_seq, sp->end_seq))
4616 	/* Save last flowlabel after a spurious retrans. */
4634 			if (after(TCP_SKB_CB(skb)->end_seq, tp->rcv_nxt))
4787  * Before queueing skb @from after @to, try to merge them
4869 		if (after(TCP_SKB_CB(skb)->seq, tp->rcv_nxt))
4881 		if (unlikely(!after(TCP_SKB_CB(skb)->end_seq, tp->rcv_nxt))) {
4981 	/* Can avoid an rbtree lookup if we are adding skb after ooo_last_skb */
4998 			if (!after(end_seq, TCP_SKB_CB(skb1)->end_seq)) {
5008 			if (after(seq, TCP_SKB_CB(skb1)->seq)) {
5040 		if (!after(end_seq, TCP_SKB_CB(skb1)->seq))
5053 	/* If there is no skb after us, we are the last_skb ! */
5238 	if (!after(TCP_SKB_CB(skb)->end_seq, tp->rcv_nxt)) {
5264 		/* If window is closed, drop tail of packet. But after
5456 		    after(TCP_SKB_CB(skb)->seq, end) ||
5474 		if (after(TCP_SKB_CB(skb)->end_seq, end))
5509 		if (after(TCP_SKB_CB(in_skb)->seq, TCP_SKB_CB(skb)->seq))
5637  * 1) Freeing skbs in rtx queues (after tp->snd_una has advanced)
5763 	if (after(tp->copied_seq, ptr))
5780 	if (tp->urg_data && !after(ptr, tp->urg_seq))
5844 /* Accept RST for rcv_nxt - 1 after a FIN.
5912 		/* RFC 5961 3.2 (extend to match against (RCV.NXT - 1) after a
5914 		 * If seq num matches RCV.NXT or (RCV.NXT - 1) after a FIN, or
5932 				max_sack = after(sp[this_sack].end_seq,
6000  *	receive procedure patterned after RFC793 to handle all cases.
6046 	    !after(TCP_SKB_CB(skb)->ack_seq, tp->snd_nxt)) {
6364 		if (!after(TCP_SKB_CB(skb)->ack_seq, tp->snd_una) ||
6365 		    after(TCP_SKB_CB(skb)->ack_seq, tp->snd_nxt)) {
6454 		 * Change state from SYN-SENT only after copied_seq
6476 			/* Save one ACK. Data will be ready after
6802 		    after(TCP_SKB_CB(skb)->end_seq - th->fin, tp->rcv_nxt)) {
6803 			/* Receive out of order FIN after close() */
6870 			    after(TCP_SKB_CB(skb)->end_seq - th->fin, tp->rcv_nxt)) {