94 static int tcp_offset = -1;  variable
113 	const int dport_off = tcp_offset + offsetof(struct tcphdr, dest);  in setup_sock_filter()
321 	fill_transportlayer(buf + tcp_offset, seq_offset, ack_offset,  in create_packet()
351 	tcph = (struct tcphdr *)(flag_buf + tcp_offset);  in send_flags()
418 	struct tcphdr *tcphdr = (struct tcphdr *)(buf + tcp_offset);  in recompute_packet()
519 	struct tcphdr *tcph = (struct tcphdr *)(buf + tcp_offset);  in send_changed_checksum()
534 	struct tcphdr *tcph = (struct tcphdr *)(buf + tcp_offset);  in send_changed_seq()
603 	struct ip_timestamp *ts = (struct ip_timestamp *)(optpkt + tcp_offset);  in add_ipv4_ts_option()
615 	memcpy(optpkt, buf, tcp_offset);  in add_ipv4_ts_option()
616 	memcpy(optpkt + tcp_offset + optlen, buf + tcp_offset,  in add_ipv4_ts_option()
628 	struct ipv6_opt_hdr *exthdr = (struct ipv6_opt_hdr *)(optpkt + tcp_offset);  in add_ipv6_exthdr()
637 	memcpy(optpkt, buf, tcp_offset);  in add_ipv6_exthdr()
638 	memcpy(optpkt + tcp_offset + MIN_EXTHDR_SIZE, buf + tcp_offset,  in add_ipv6_exthdr()
800 	fill_transportlayer(buf + tcp_offset, PAYLOAD_LEN, 0, PAYLOAD_LEN * 2, 0);  in send_fragment4()
877 	struct ip6_frag *frag = (void *)(extpkt + tcp_offset);  in send_fragment6()
895 	memcpy(extpkt, buf, tcp_offset);  in send_fragment6()
896 	memcpy(extpkt + tcp_offset + extlen, buf + tcp_offset,  in send_fragment6()
960 		tcph = (struct tcphdr *)(buffer + tcp_offset + ip_ext_len);  in check_recv_pkts()
1345 		tcp_offset = ETH_HLEN + sizeof(struct iphdr) * 2;  in main()
1346 		total_hdr_len = tcp_offset + sizeof(struct tcphdr);  in main()
1348 		tcp_offset = ETH_HLEN + sizeof(struct iphdr);  in main()
1349 		total_hdr_len = tcp_offset + sizeof(struct tcphdr);  in main()
1351 		tcp_offset = ETH_HLEN + sizeof(struct ipv6hdr);  in main()