struct onload_delegated_send {
void* headers;
int headers_len; /* buffer len on input, headers len on output */
int mss; /* one packet payload may not exceed this */
int send_wnd; /* send window */
int cong_wnd; /* congestion window */
int user_size; /* the "size" value from send_prepare() call */
int tcp_seq_offset;
int ip_len_offset;
int ip_tcp_hdr_len;
int reserved[5];
};