629 	int thflags;  in tcp_input_with_port()  local
807 	thflags = tcp_get_flags(th);  in tcp_input_with_port()
841 	    ((thflags & (TH_ACK|TH_SYN)) == TH_SYN ?  in tcp_input_with_port()
922 		if ((V_tcp_log_in_vain == 1 && (thflags & TH_SYN)) ||  in tcp_input_with_port()
1006 		    (thflags & TH_SYN) ? TO_SYN : 0);  in tcp_input_with_port()
1075 		if ((thflags & (TH_RST|TH_ACK|TH_SYN)) == TH_ACK) {  in tcp_input_with_port()
1179 		if (thflags & TH_RST) {  in tcp_input_with_port()
1186 		if ((thflags & TH_SYN) == 0) {  in tcp_input_with_port()
1197 		if (thflags & TH_ACK) {  in tcp_input_with_port()
1218 		if ((thflags & TH_FIN) && V_drop_synfin) {  in tcp_input_with_port()
1233 		KASSERT((thflags & (TH_RST|TH_ACK)) == 0,  in tcp_input_with_port()
1235 		KASSERT(thflags & (TH_SYN),  in tcp_input_with_port()
1367 		tcp_dooptions(&to, optp, optlen, thflags);  in tcp_input_with_port()
1403 	    ((V_blackhole == 1 && (thflags & TH_SYN)) || V_blackhole > 1))) &&  in tcp_input_with_port()
1522 	uint16_t thflags;  in tcp_do_segment()  local
1537 	thflags = tcp_get_flags(th);  in tcp_do_segment()
1556 	if ((thflags & TH_SYN) && (thflags & TH_FIN) && V_drop_synfin) {  in tcp_do_segment()
1570 	if ((tp->t_state == TCPS_SYN_SENT) && (thflags & TH_ACK) &&  in tcp_do_segment()
1589 	if (thflags & TH_FIN)  in tcp_do_segment()
1603 	if (tcp_ecn_input_segment(tp, thflags, tlen,  in tcp_do_segment()
1613 	    (thflags & TH_SYN) ? TO_SYN : 0);  in tcp_do_segment()
1648 	if (tp->t_state == TCPS_SYN_SENT && (thflags & TH_SYN)) {  in tcp_do_segment()
1650 		tcp_ecn_input_parallel_syn(tp, thflags, iptos);  in tcp_do_segment()
1711 		if (((thflags & TH_RST) != 0) || V_tcp_tolerate_missing_ts) {  in tcp_do_segment()
1760 	    (thflags & (TH_SYN|TH_FIN|TH_RST|TH_URG|TH_ACK)) == TH_ACK &&  in tcp_do_segment()
1981 		if (thflags & TH_RST) {  in tcp_do_segment()
1985 		if ((thflags & TH_ACK) &&  in tcp_do_segment()
2000 			if ((thflags & (TH_SYN|TH_ACK)) == (TH_SYN|TH_ACK)) {  in tcp_do_segment()
2004 			} else if (thflags & TH_SYN) {  in tcp_do_segment()
2009 			} else if (!(thflags & (TH_ACK|TH_FIN|TH_RST))) {  in tcp_do_segment()
2031 		if ((thflags & (TH_ACK|TH_RST)) == (TH_ACK|TH_RST)) {  in tcp_do_segment()
2037 		if (thflags & TH_RST)  in tcp_do_segment()
2039 		if (!(thflags & TH_SYN))  in tcp_do_segment()
2044 		if (thflags & TH_ACK) {  in tcp_do_segment()
2081 			tcp_ecn_input_syn_sent(tp, thflags, iptos);  in tcp_do_segment()
2094 				thflags &= ~TH_SYN;  in tcp_do_segment()
2127 			thflags &= ~TH_FIN;  in tcp_do_segment()
2140 		if (thflags & TH_ACK)  in tcp_do_segment()
2161 	if (thflags & TH_RST) {  in tcp_do_segment()
2214 	if ((thflags & TH_SYN) && tp->t_state != TCPS_SYN_SENT &&  in tcp_do_segment()
2224 			tcp_ecn_input_syn_sent(tp, thflags, iptos);  in tcp_do_segment()
2276 		if (thflags & TH_SYN) {  in tcp_do_segment()
2277 			thflags &= ~TH_SYN;  in tcp_do_segment()
2282 				thflags &= ~TH_URG;  in tcp_do_segment()
2289 		    || (todrop == tlen && (thflags & TH_FIN) == 0)) {  in tcp_do_segment()
2295 			thflags &= ~TH_FIN;  in tcp_do_segment()
2327 			thflags &= ~TH_URG;  in tcp_do_segment()
2380 		thflags &= ~(TH_PUSH|TH_FIN);  in tcp_do_segment()
2404 		((thflags & (TH_SYN|TH_FIN)) != 0))) {  in tcp_do_segment()
2414 	if ((thflags & TH_ACK) == 0) {  in tcp_do_segment()
2536 		if (tlen == 0 && (thflags & TH_FIN) == 0) {  in tcp_do_segment()
2592 				if ((thflags & TH_FIN) &&  in tcp_do_segment()
3131 	if ((thflags & TH_ACK) &&  in tcp_do_segment()
3150 	if ((thflags & TH_URG) && th->th_urp &&  in tcp_do_segment()
3161 			thflags &= ~TH_URG;		/* XXX */  in tcp_do_segment()
3222 	if ((tlen || (thflags & TH_FIN) || (tfo_syn && tlen > 0)) &&  in tcp_do_segment()
3258 			thflags = tcp_get_flags(th) & TH_FIN;  in tcp_do_segment()
3276 			thflags = tcp_reass(tp, th, &temp, &tlen, m);  in tcp_do_segment()
3328 				if ((thflags & TH_FIN) != 0) {  in tcp_do_segment()
3344 				if ((thflags & TH_FIN) != 0) {  in tcp_do_segment()
3356 		thflags &= ~TH_FIN;  in tcp_do_segment()
3363 	if (thflags & TH_FIN) {  in tcp_do_segment()
3444 	if (tp->t_state == TCPS_SYN_RECEIVED && (thflags & TH_ACK) &&  in tcp_do_segment()