Function rte_cryptodev_asym_session_create

dpdk/lib/cryptodev/rte_cryptodev.c:2138–2212

}

int
rte_cryptodev_asym_session_create(uint8_t dev_id,
		struct rte_crypto_asym_xform *xforms, struct rte_mempool *mp,
		void **session)
{
	struct rte_cryptodev_asym_session *sess;
	uint32_t session_priv_data_sz;
	struct rte_cryptodev_asym_session_pool_private_data *pool_priv;
	unsigned int session_header_size =
			rte_cryptodev_asym_get_header_session_size();
	struct rte_cryptodev *dev;
	int ret;

	if (!rte_cryptodev_is_valid_dev(dev_id)) {
		CDEV_LOG_ERR("Invalid dev_id=%" PRIu8, dev_id);
		return -EINVAL;
	}

	dev = rte_cryptodev_pmd_get_dev(dev_id);

	if (dev == NULL)
		return -EINVAL;

	if (!mp) {
		CDEV_LOG_ERR("invalid mempool");
		return -EINVAL;
	}

	session_priv_data_sz = rte_cryptodev_asym_get_private_session_size(
			dev_id);
	pool_priv = rte_mempool_get_priv(mp);

	if (pool_priv->max_priv_session_sz < session_priv_data_sz) {
		CDEV_LOG_DEBUG(
			"The private session data size used when creating the mempool is smaller than this device's private session data.");
		return -EINVAL;
	}

	/* Verify if provided mempool can hold elements big enough. */
	if (mp->elt_size < session_header_size + session_priv_data_sz) {
		CDEV_LOG_ERR(
			"mempool elements too small to hold session objects");
		return -EINVAL;
	}

	/* Allocate a session structure from the session pool */
	if (rte_mempool_get(mp, session)) {
		CDEV_LOG_ERR("couldn't get object from session mempool");
		return -ENOMEM;
	}

	sess = *session;
	sess->driver_id = dev->driver_id;
	sess->user_data_sz = pool_priv->user_data_sz;
	sess->max_priv_data_sz = pool_priv->max_priv_session_sz;

	/* Clear device session pointer.*/
	memset(sess->sess_private_data, 0, session_priv_data_sz + sess->user_data_sz);