377 	struct tcphdr		*tcp;  member
1299 	struct tcphdr *tcp = L3HDR(struct tcphdr,ip);  in tcpopts_match()  local
1300 	u_char *cp = (u_char *)(tcp + 1);  in tcpopts_match()
1301 	int x = (tcp->th_off << 2) - sizeof(struct tcphdr);  in tcpopts_match()
1492 		struct tcphdr *const tcp = (struct tcphdr *)icmp;  in ipfw_log()  local
1508 					  ntohs(tcp->th_sport),  in ipfw_log()
1510 					  ntohs(tcp->th_dport));  in ipfw_log()
2022 ipfw_state_update_tcp(struct ipfw_state *s, int dir, const struct tcphdr *tcp)  in ipfw_state_update_tcp()  argument
2024 	uint32_t seq = ntohl(tcp->th_seq);  in ipfw_state_update_tcp()
2025 	uint32_t ack = ntohl(tcp->th_ack);  in ipfw_state_update_tcp()
2027 	if (tcp->th_flags & TH_RST)  in ipfw_state_update_tcp()
2040 		if (tcp->th_flags & TH_ACK) {  in ipfw_state_update_tcp()
2065 		if (tcp->th_flags & TH_ACK) {  in ipfw_state_update_tcp()
2086     const struct tcphdr *tcp, struct ipfw_state *s)  in ipfw_state_update()  argument
2092 		if (tcp != NULL && !ipfw_state_update_tcp(s, dir, tcp))  in ipfw_state_update()
2142     int *match_direction, const struct tcphdr *tcp)  in ipfw_state_lookup()  argument
2175 	ipfw_state_update(pkt, dir, tcp, s);  in ipfw_state_lookup()
2189     uint16_t type, struct ip_fw *rule, const struct tcphdr *tcp)  in ipfw_state_alloc()  argument
2223 	ipfw_state_update(id, MATCH_FORWARD, tcp, s);  in ipfw_state_alloc()
2231     const struct tcphdr *tcp)  in ipfw_state_add()  argument
2235 	s = ipfw_state_alloc(ctx, id, type, rule, tcp);  in ipfw_state_add()
2746     ipfw_insn_limit *cmd, struct ip_fw_args *args, const struct tcphdr *tcp)  in ipfw_state_install()  argument
2795 		    tcp);  in ipfw_state_install()
2817 		s = ipfw_state_add(ctx, &args->f_id, O_LIMIT, rule, t, tcp);  in ipfw_state_install()
2882 	struct tcphdr *tcp;  in send_pkt()  local
2894 	tcp = (struct tcphdr *)(ip + 1); /* no IP options */  in send_pkt()
2896 	tcp->th_off = 5;  in send_pkt()
2904 	tcp->th_sport = htons(id->dst_port);  in send_pkt()
2905 	tcp->th_dport = htons(id->src_port);  in send_pkt()
2908 			tcp->th_seq = htonl(ack);  in send_pkt()
2909 			tcp->th_ack = htonl(0);  in send_pkt()
2910 			tcp->th_flags = TH_RST;  in send_pkt()
2914 			tcp->th_seq = htonl(0);  in send_pkt()
2915 			tcp->th_ack = htonl(seq);  in send_pkt()
2916 			tcp->th_flags = TH_RST | TH_ACK;  in send_pkt()
2931 			tcp->th_dport = htons(id->dst_port);  in send_pkt()
2932 			tcp->th_sport = htons(id->src_port);  in send_pkt()
2934 		tcp->th_seq = htonl(seq);  in send_pkt()
2935 		tcp->th_ack = htonl(ack);  in send_pkt()
2936 		tcp->th_flags = TH_ACK;  in send_pkt()
2945 	tcp->th_sum = in_cksum(m, m->m_pkthdr.len);  in send_pkt()
2972 		struct tcphdr *const tcp =  in send_reject()  local
2975 		if ((tcp->th_flags & TH_RST) == 0) {  in send_reject()
2976 			send_pkt(&args->f_id, ntohl(tcp->th_seq),  in send_reject()
2977 				 ntohl(tcp->th_ack), tcp->th_flags | TH_RST);  in send_reject()
3291 	struct tcphdr *tcp;  in ipfw_setup_local()  local
3324 			local->tcp = tcp = L3HDR(struct tcphdr, ip);  in ipfw_setup_local()
3325 			local->dst_port = tcp->th_dport;  in ipfw_setup_local()
3326 			local->src_port = tcp->th_sport;  in ipfw_setup_local()
3327 			args->f_id.flags = tcp->th_flags;  in ipfw_setup_local()
3543 				    lc.tcp, &x->xlat_st);  in ipfw_chk()
4027 				    (ipfw_insn_limit *)cmd, args, lc.tcp);  in ipfw_chk()
4056 					    lc.tcp);  in ipfw_chk()
4126 					    &args->f_id, &dyn_dir, lc.tcp);  in ipfw_chk()
4197 					    lc.tcp, &x->xlat_pair->xlat_st);  in ipfw_chk()