- ip4_header_t *ih;
- ih = vlib_buffer_push_ip4 (vm, b, &tc->c_lcl_ip4,
- &tc->c_rmt_ip4, IP_PROTOCOL_TCP,
- tcp_csum_offload (tc));
- th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ih);
+ vlib_buffer_push_ip4 (wrk->vm, b, &tc->c_lcl_ip4, &tc->c_rmt_ip4,
+ IP_PROTOCOL_TCP, tcp_csum_offload (tc));