87 static int tcp_offset = -1;  variable
104 	const int dport_off = tcp_offset + offsetof(struct tcphdr, dest);  in setup_sock_filter()
290 	fill_transportlayer(buf + tcp_offset, seq_offset, ack_offset,  in create_packet()
311 	tcph = (struct tcphdr *)(flag_buf + tcp_offset);  in send_flags()
378 	struct tcphdr *tcphdr = (struct tcphdr *)(buf + tcp_offset);  in recompute_packet()
472 	struct tcphdr *tcph = (struct tcphdr *)(buf + tcp_offset);  in send_changed_checksum()
487 	struct tcphdr *tcph = (struct tcphdr *)(buf + tcp_offset);  in send_changed_seq()
556 	struct ip_timestamp *ts = (struct ip_timestamp *)(optpkt + tcp_offset);  in add_ipv4_ts_option()
568 	memcpy(optpkt, buf, tcp_offset);  in add_ipv4_ts_option()
569 	memcpy(optpkt + tcp_offset + optlen, buf + tcp_offset,  in add_ipv4_ts_option()
613 	fill_transportlayer(buf + tcp_offset, PAYLOAD_LEN, 0, PAYLOAD_LEN * 2, 0);  in send_fragment4()
690 	struct ip6_frag *frag = (void *)(extpkt + tcp_offset);  in send_fragment6()
708 	memcpy(extpkt, buf, tcp_offset);  in send_fragment6()
709 	memcpy(extpkt + tcp_offset + extlen, buf + tcp_offset,  in send_fragment6()
772 		tcph = (struct tcphdr *)(buffer + tcp_offset + ip_ext_len);  in check_recv_pkts()
1087 		tcp_offset = ETH_HLEN + sizeof(struct iphdr);  in main()
1088 		total_hdr_len = tcp_offset + sizeof(struct tcphdr);  in main()
1090 		tcp_offset = ETH_HLEN + sizeof(struct ipv6hdr);  in main()