net/ipv4/tcp.c

555 		u16 urg_data = READ_ONCE(tp->urg_data);
557 		if (unlikely(urg_data) &&
584 		if (urg_data & TCP_URG_VALID)
620 		answ = READ_ONCE(tp->urg_data) &&
1377 	if (sock_flag(sk, SOCK_URGINLINE) || !tp->urg_data ||
1378 	    tp->urg_data == TCP_URG_READ)
1384 	if (tp->urg_data & TCP_URG_VALID) {
1386 		char c = tp->urg_data;
1389 			WRITE_ONCE(tp->urg_data, TCP_URG_READ);
1575 			if (unlikely(tp->urg_data)) {
2397 		if (unlikely(tp->urg_data) && tp->urg_seq == *seq) {
2505 		if (unlikely(tp->urg_data)) {
2539 		if (unlikely(tp->urg_data) && after(tp->copied_seq, tp->urg_seq)) {
2540 			WRITE_ONCE(tp->urg_data, 0);
3038 	WRITE_ONCE(tp->urg_data, 0);