NVME_TCP_F_DDGST
pdu->hdr.flags |= NVME_TCP_F_DDGST;
if (unlikely(len && !(hdr->flags & NVME_TCP_F_DDGST))) {
data->hdr.flags |= NVME_TCP_F_DDGST;
if (unlikely(len && !(hdr->flags & NVME_TCP_F_DDGST))) {
pdu->hdr.flags |= NVME_TCP_F_DDGST;