+static int
+otx_cpt_metabuf_mempool_create(const struct rte_cryptodev *dev,
+ struct cpt_instance *instance, uint8_t qp_id,
+ int nb_elements)
+{
+ char mempool_name[RTE_MEMPOOL_NAMESIZE];
+ struct cpt_qp_meta_info *meta_info;
+ struct rte_mempool *pool;
+ int max_mlen = 0;
+ int sg_mlen = 0;
+ int lb_mlen = 0;
+ int ret;
+
+ /*
+ * Calculate metabuf length required. The 'crypto_octeontx' device
+ * would be either SYMMETRIC or ASYMMETRIC.
+ */
+
+ if (dev->feature_flags & RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO) {
+
+ /* Get meta len for scatter gather mode */
+ sg_mlen = cpt_pmd_ops_helper_get_mlen_sg_mode();
+
+ /* Extra 32B saved for future considerations */
+ sg_mlen += 4 * sizeof(uint64_t);
+
+ /* Get meta len for linear buffer (direct) mode */
+ lb_mlen = cpt_pmd_ops_helper_get_mlen_direct_mode();
+
+ /* Extra 32B saved for future considerations */
+ lb_mlen += 4 * sizeof(uint64_t);
+
+ /* Check max requirement for meta buffer */
+ max_mlen = RTE_MAX(lb_mlen, sg_mlen);
+ } else {
+
+ /* Asymmetric device */
+
+ /* Get meta len for asymmetric operations */
+ max_mlen = cpt_pmd_ops_helper_asym_get_mlen();
+ }
+
+ /* Allocate mempool */
+
+ snprintf(mempool_name, RTE_MEMPOOL_NAMESIZE, "otx_cpt_mb_%u:%u",
+ dev->data->dev_id, qp_id);
+
+ pool = rte_mempool_create_empty(mempool_name, nb_elements, max_mlen,
+ METABUF_POOL_CACHE_SIZE, 0,
+ rte_socket_id(), 0);
+
+ if (pool == NULL) {
+ CPT_LOG_ERR("Could not create mempool for metabuf");
+ return rte_errno;
+ }
+
+ ret = rte_mempool_set_ops_byname(pool, RTE_MBUF_DEFAULT_MEMPOOL_OPS,
+ NULL);
+ if (ret) {
+ CPT_LOG_ERR("Could not set mempool ops");
+ goto mempool_free;
+ }
+
+ ret = rte_mempool_populate_default(pool);
+ if (ret <= 0) {
+ CPT_LOG_ERR("Could not populate metabuf pool");
+ goto mempool_free;
+ }
+
+ meta_info = &instance->meta_info;
+
+ meta_info->pool = pool;
+ meta_info->lb_mlen = lb_mlen;
+ meta_info->sg_mlen = sg_mlen;
+
+ return 0;
+
+mempool_free:
+ rte_mempool_free(pool);
+ return ret;
+}
+
+static void
+otx_cpt_metabuf_mempool_destroy(struct cpt_instance *instance)
+{
+ struct cpt_qp_meta_info *meta_info = &instance->meta_info;
+
+ rte_mempool_free(meta_info->pool);
+
+ meta_info->pool = NULL;
+ meta_info->lb_mlen = 0;
+ meta_info->sg_mlen = 0;
+}
+