93 static int tcp_offset = -1;  variable
111 	const int dport_off = tcp_offset + offsetof(struct tcphdr, dest);  in setup_sock_filter()
316 	fill_transportlayer(buf + tcp_offset, seq_offset, ack_offset,  in create_packet()
337 	tcph = (struct tcphdr *)(flag_buf + tcp_offset);  in send_flags()
404 	struct tcphdr *tcphdr = (struct tcphdr *)(buf + tcp_offset);  in recompute_packet()
498 	struct tcphdr *tcph = (struct tcphdr *)(buf + tcp_offset);  in send_changed_checksum()
513 	struct tcphdr *tcph = (struct tcphdr *)(buf + tcp_offset);  in send_changed_seq()
582 	struct ip_timestamp *ts = (struct ip_timestamp *)(optpkt + tcp_offset);  in add_ipv4_ts_option()
594 	memcpy(optpkt, buf, tcp_offset);  in add_ipv4_ts_option()
595 	memcpy(optpkt + tcp_offset + optlen, buf + tcp_offset,  in add_ipv4_ts_option()
607 	struct ipv6_opt_hdr *exthdr = (struct ipv6_opt_hdr *)(optpkt + tcp_offset);  in add_ipv6_exthdr()
616 	memcpy(optpkt, buf, tcp_offset);  in add_ipv6_exthdr()
617 	memcpy(optpkt + tcp_offset + MIN_EXTHDR_SIZE, buf + tcp_offset,  in add_ipv6_exthdr()
779 	fill_transportlayer(buf + tcp_offset, PAYLOAD_LEN, 0, PAYLOAD_LEN * 2, 0);  in send_fragment4()
856 	struct ip6_frag *frag = (void *)(extpkt + tcp_offset);  in send_fragment6()
874 	memcpy(extpkt, buf, tcp_offset);  in send_fragment6()
875 	memcpy(extpkt + tcp_offset + extlen, buf + tcp_offset,  in send_fragment6()
939 		tcph = (struct tcphdr *)(buffer + tcp_offset + ip_ext_len);  in check_recv_pkts()
1309 		tcp_offset = ETH_HLEN + sizeof(struct iphdr);  in main()
1310 		total_hdr_len = tcp_offset + sizeof(struct tcphdr);  in main()
1312 		tcp_offset = ETH_HLEN + sizeof(struct ipv6hdr);  in main()