NVME_TCP_HDR_DIGEST_ENABLE
icreq->digest |= NVME_TCP_HDR_DIGEST_ENABLE;
ctrl_hdgst = !!(icresp->digest & NVME_TCP_HDR_DIGEST_ENABLE);
queue->hdr_digest = !!(icreq->digest & NVME_TCP_HDR_DIGEST_ENABLE);
icresp->digest |= NVME_TCP_HDR_DIGEST_ENABLE;