844 		if (after(tp->snd_una, tp->rtt_seq)) {  in tcp_rtt_estimator()
1186 	if (after(start_seq, tp->snd_una))  in tcp_is_sackblock_valid()
1193 	if (after(end_seq, tp->snd_una))  in tcp_is_sackblock_valid()
1324 	if (!after(end_seq, tp->snd_una))  in tcp_sacktag_one()
1523 	if (!after(TCP_SKB_CB(skb)->end_seq, tp->snd_una))  in tcp_shift_skb_data()
1603 	if (!after(TCP_SKB_CB(skb)->seq + len, tp->snd_una))  in tcp_shift_skb_data()
1822 				if ((TCP_SKB_CB(ack_skb)->ack_seq != tp->snd_una) &&  in tcp_sacktag_write_queue()
1823 				    !after(sp[used_sacks].end_seq, tp->snd_una))  in tcp_sacktag_write_queue()
2049 	tp->undo_marker = tp->snd_una;  in tcp_init_undo()
2105 	    !after(tp->high_seq, tp->snd_una) ||  in tcp_enter_loss()
2306 		if (mark_head && after(TCP_SKB_CB(skb)->seq, tp->snd_una))  in tcp_mark_head_lost()
2492 	if (tp->snd_una == tp->high_seq && tcp_is_reno(tp)) {  in tcp_try_undo_recovery()
2756 	bool recovered = !before(tp->snd_una, tp->high_seq);  in tcp_process_loss()
2859 		     tp->snd_una + tp->reordering * tp->mss_cache);  in tcp_force_fast_retransmit()
2904 	} else if (!before(tp->snd_una, tp->high_seq)) {  in tcp_fastretrans_alert()
2909 			if (tp->snd_una != tp->high_seq) {  in tcp_fastretrans_alert()
2970 		    tp->snd_una == tp->mtu_probe.probe_seq_start) {  in tcp_fastretrans_alert()
3118 	BUG_ON(!after(TCP_SKB_CB(skb)->end_seq, tp->snd_una));  in tcp_tso_acked()
3121 	if (tcp_trim_head(sk, skb, tp->snd_una - TCP_SKB_CB(skb)->seq))  in tcp_tso_acked()
3144 	    before(shinfo->tskey, tcp_sk(sk)->snd_una)) {  in tcp_ack_tstamp()
3183 		if (after(scb->end_seq, tp->snd_una)) {  in tcp_clean_rtx_queue()
3185 			    !after(tp->snd_una, scb->seq))  in tcp_clean_rtx_queue()
3259 	if (likely(between(tp->snd_up, prior_snd_una, tp->snd_una)))  in tcp_clean_rtx_queue()
3260 		tp->snd_up = tp->snd_una;  in tcp_clean_rtx_queue()
3293 			     !after(tp->mtu_probe.probe_seq_end, tp->snd_una))) {  in tcp_clean_rtx_queue()
3438 	return	after(ack, tp->snd_una) ||  in tcp_may_update_window()
3446 	u32 delta = ack - tp->snd_una;  in tcp_snd_una_update()
3450 	tp->snd_una = ack;  in tcp_snd_una_update()
3679 	u32 prior_snd_una = tp->snd_una;  in tcp_ack()
3727 	prior_fack = tcp_is_sack(tp) ? tcp_highest_sack_seq(tp) : tp->snd_una;  in tcp_ack()
4184 		ack == tp->snd_una &&  in tcp_disordered_ack()
4891 	TCP_SKB_CB(skb)->ack_seq = tcp_sk(sk)->snd_una - 1;  in tcp_send_rcvq()
5826 			if (TCP_SKB_CB(skb)->ack_seq != tp->snd_una) {  in tcp_rcv_established()
6054 		if (!after(TCP_SKB_CB(skb)->ack_seq, tp->snd_una) ||  in tcp_rcv_synsent_state_process()
6413 		tp->snd_una = TCP_SKB_CB(skb)->ack_seq;  in tcp_rcv_state_process()
6436 		if (tp->snd_una != tp->write_seq)  in tcp_rcv_state_process()
6484 		if (tp->snd_una == tp->write_seq) {  in tcp_rcv_state_process()
6491 		if (tp->snd_una == tp->write_seq) {  in tcp_rcv_state_process()