Function rte_cryptodev_sym_session_create

dpdk/lib/cryptodev/rte_cryptodev.c:2071–2136

}

void *
rte_cryptodev_sym_session_create(uint8_t dev_id,
		struct rte_crypto_sym_xform *xforms,
		struct rte_mempool *mp)
{
	struct rte_cryptodev *dev;
	struct rte_cryptodev_sym_session *sess;
	struct rte_cryptodev_sym_session_pool_private_data *pool_priv;
	uint32_t sess_priv_sz;
	int ret;

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

	if (xforms == NULL) {
		CDEV_LOG_ERR("Invalid xform");
		rte_errno = EINVAL;
		return NULL;
	}

	sess_priv_sz = rte_cryptodev_sym_get_private_session_size(dev_id);
	if (!rte_cryptodev_sym_is_valid_session_pool(mp, sess_priv_sz)) {
		CDEV_LOG_ERR("Invalid mempool");
		rte_errno = EINVAL;
		return NULL;
	}

	dev = rte_cryptodev_pmd_get_dev(dev_id);

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

	pool_priv = rte_mempool_get_priv(mp);
	sess->driver_id = dev->driver_id;
	sess->sess_data_sz = pool_priv->sess_data_sz;
	sess->user_data_sz = pool_priv->user_data_sz;
	sess->driver_priv_data_iova = rte_mempool_virt2iova(sess) +
		offsetof(struct rte_cryptodev_sym_session, driver_priv_data);

	if (dev->dev_ops->sym_session_configure == NULL) {
		rte_errno = ENOTSUP;
		goto error_exit;
	}
	memset(sess->driver_priv_data, 0, pool_priv->sess_data_sz + pool_priv->user_data_sz);

	ret = dev->dev_ops->sym_session_configure(dev, xforms, sess);
	if (ret < 0) {
		rte_errno = -ret;
		goto error_exit;
	}
	sess->driver_id = dev->driver_id;