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\ No newline at end of file
@@ -74,9 +74,3 @@ Deprecation Notices
* security: New field ``uint64_t opaque_data`` is planned to be added into
``rte_security_session`` structure. That would allow upper layer to easily
associate/de-associate some user defined data with the security session.
-
-* cryptodev: several API and ABI changes are planned for rte_cryptodev
- in v19.02:
-
- - The size and layout of ``rte_cryptodev_sym_session`` will change
- to fix existing issues.
@@ -170,7 +170,8 @@ API Changes
* cryptodev: a new function ``rte_cryptodev_sym_session_pool_create()`` is
introduced. This function is now mandatory when creating symmetric session
header mempool. Please note all crypto applications are required to use this
- function from now on.
+ function from now on. Failed to do so will cause
+ ``rte_cryptodev_sym_session_create()`` function call return error.
ABI Changes
@@ -195,6 +196,10 @@ ABI Changes
``rte_cryptodev_qp_conf`` has been added two parameters of symmetric session
mempool and symmetric session private data mempool.
+* cryptodev: as shown in the the 18.11 deprecation notice, the structure
+ ``rte_cryptodev_sym_session`` has been updated to contain more information
+ to ensure safely accessing the session and session private data.
+
Shared Library Versions
-----------------------
@@ -978,6 +978,30 @@ rte_cryptodev_queue_pair_setup(uint8_t dev_id, uint16_t queue_pair_id,
return -EINVAL;
}
+ if (qp_conf->mp_session) {
+ struct rte_cryptodev_sym_session_pool_private_data *pool_priv;
+ uint32_t obj_size = qp_conf->mp_session->elt_size;
+ uint32_t obj_priv_size = qp_conf->mp_session_private->elt_size;
+ struct rte_cryptodev_sym_session s = {0};
+
+ pool_priv = rte_mempool_get_priv(qp_conf->mp_session);
+ if (!pool_priv || qp_conf->mp_session->private_data_size <
+ sizeof(*pool_priv)) {
+ CDEV_LOG_ERR("Invalid mempool\n");
+ return -EINVAL;
+ }
+
+ s.nb_drivers = pool_priv->nb_drivers;
+
+ if ((rte_cryptodev_sym_get_existing_header_session_size(&s) >
+ obj_size) || (s.nb_drivers <= dev->driver_id) ||
+ rte_cryptodev_sym_get_private_session_size(dev_id) >
+ obj_priv_size) {
+ CDEV_LOG_ERR("Invalid mempool\n");
+ return -EINVAL;
+ }
+ }
+
if (dev->data->dev_started) {
CDEV_LOG_ERR(
"device %d must be stopped to allow configuration", dev_id);
@@ -1172,6 +1196,8 @@ rte_cryptodev_sym_session_init(uint8_t dev_id,
struct rte_mempool *mp)
{
struct rte_cryptodev *dev;
+ uint32_t sess_priv_sz = rte_cryptodev_sym_get_private_session_size(
+ dev_id);
uint8_t index;
int ret;
@@ -1180,11 +1206,16 @@ rte_cryptodev_sym_session_init(uint8_t dev_id,
if (sess == NULL || xforms == NULL || dev == NULL)
return -EINVAL;
+ if (mp->elt_size < sess_priv_sz)
+ return -EINVAL;
+
index = dev->driver_id;
+ if (index >= sess->nb_drivers)
+ return -EINVAL;
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->sym_session_configure, -ENOTSUP);
- if (sess->sess_private_data[index] == NULL) {
+ if (sess->sess_data[index].data == NULL) {
ret = dev->dev_ops->sym_session_configure(dev, xforms,
sess, mp);
if (ret < 0) {
@@ -1273,10 +1304,29 @@ rte_cryptodev_sym_session_pool_create(const char *name, uint32_t nb_elts,
return mp;
}
+static unsigned int
+rte_cryptodev_sym_session_data_size(struct rte_cryptodev_sym_session *sess)
+{
+ return (sizeof(sess->sess_data[0]) * sess->nb_drivers);
+}
+
struct rte_cryptodev_sym_session *
rte_cryptodev_sym_session_create(struct rte_mempool *mp)
{
struct rte_cryptodev_sym_session *sess;
+ struct rte_cryptodev_sym_session_pool_private_data *pool_priv;
+
+ if (!mp) {
+ CDEV_LOG_ERR("Invalid mempool\n");
+ return NULL;
+ }
+
+ pool_priv = rte_mempool_get_priv(mp);
+
+ if (!pool_priv || mp->private_data_size < sizeof(*pool_priv)) {
+ CDEV_LOG_ERR("Invalid mempool\n");
+ return NULL;
+ }
/* Allocate a session structure from the session pool */
if (rte_mempool_get(mp, (void **)&sess)) {
@@ -1284,10 +1334,14 @@ rte_cryptodev_sym_session_create(struct rte_mempool *mp)
return NULL;
}
+ sess->nb_drivers = pool_priv->nb_drivers;
+
+
/* Clear device session pointer.
* Include the flag indicating presence of user data
*/
- memset(sess, 0, (sizeof(void *) * nb_drivers) + sizeof(uint8_t));
+ memset(sess->sess_data, 0,
+ rte_cryptodev_sym_session_data_size(sess));
return sess;
}
@@ -1395,16 +1449,20 @@ rte_cryptodev_asym_session_free(struct rte_cryptodev_asym_session *sess)
return 0;
}
-
unsigned int
rte_cryptodev_sym_get_header_session_size(void)
{
/*
- * Header contains pointers to the private data
- * of all registered drivers, and a flag which
- * indicates presence of user data
+ * Header contains pointers to the private data of all registered
+ * drivers and all necessary information to ensure safely clear
+ * or free al session.
*/
- return ((sizeof(void *) * nb_drivers) + sizeof(uint8_t));
+ struct rte_cryptodev_sym_session s = {0};
+
+ s.nb_drivers = nb_drivers;
+
+ return (unsigned int)(sizeof(s) +
+ rte_cryptodev_sym_session_data_size(&s));
}
unsigned int __rte_experimental
@@ -1414,7 +1472,8 @@ rte_cryptodev_sym_get_existing_header_session_size(
if (!sess)
return 0;
else
- return rte_cryptodev_sym_get_header_session_size();
+ return (unsigned int)(sizeof(*sess) +
+ rte_cryptodev_sym_session_data_size(sess));
}
unsigned int __rte_experimental
@@ -1432,7 +1491,6 @@ unsigned int
rte_cryptodev_sym_get_private_session_size(uint8_t dev_id)
{
struct rte_cryptodev *dev;
- unsigned int header_size = sizeof(void *) * nb_drivers;
unsigned int priv_sess_size;
if (!rte_cryptodev_pmd_is_valid_dev(dev_id))
@@ -1445,16 +1503,7 @@ rte_cryptodev_sym_get_private_session_size(uint8_t dev_id)
priv_sess_size = (*dev->dev_ops->sym_session_get_size)(dev);
- /*
- * If size is less than session header size,
- * return the latter, as this guarantees that
- * sessionless operations will work
- */
- if (priv_sess_size < header_size)
- return header_size;
-
return priv_sess_size;
-
}
unsigned int __rte_experimental
@@ -1486,15 +1535,10 @@ rte_cryptodev_sym_session_set_user_data(
void *data,
uint16_t size)
{
- uint16_t off_set = sizeof(void *) * nb_drivers;
- uint8_t *user_data_present = (uint8_t *)sess + off_set;
-
if (sess == NULL)
return -EINVAL;
- *user_data_present = 1;
- off_set += sizeof(uint8_t);
- rte_memcpy((uint8_t *)sess + off_set, data, size);
+ rte_memcpy(sess->sess_data + sess->nb_drivers, data, size);
return 0;
}
@@ -1502,14 +1546,10 @@ void * __rte_experimental
rte_cryptodev_sym_session_get_user_data(
struct rte_cryptodev_sym_session *sess)
{
- uint16_t off_set = sizeof(void *) * nb_drivers;
- uint8_t *user_data_present = (uint8_t *)sess + off_set;
-
- if (sess == NULL || !*user_data_present)
+ if (sess == NULL)
return NULL;
- off_set += sizeof(uint8_t);
- return (uint8_t *)sess + off_set;
+ return (void *)(sess->sess_data + sess->nb_drivers);
}
/** Initialise rte_crypto_op mempool element */
@@ -957,8 +957,12 @@ rte_cryptodev_enqueue_burst(uint8_t dev_id, uint16_t qp_id,
* has a fixed algo, key, op-type, digest_len etc.
*/
struct rte_cryptodev_sym_session {
- __extension__ void *sess_private_data[0];
- /**< Private symmetric session material */
+ uint16_t nb_drivers;
+ /**< number of elements in sess_data array */
+ __extension__ struct {
+ void *data;
+ } sess_data[0];
+ /**< Driver specific session material, variable size */
};
/** Cryptodev asymmetric crypto session */
@@ -475,14 +475,23 @@ RTE_INIT(init_ ##driver_id)\
static inline void *
get_sym_session_private_data(const struct rte_cryptodev_sym_session *sess,
uint8_t driver_id) {
- return sess->sess_private_data[driver_id];
+ if (unlikely(sess->nb_drivers <= driver_id))
+ return NULL;
+
+ return sess->sess_data[driver_id].data;
}
static inline void
set_sym_session_private_data(struct rte_cryptodev_sym_session *sess,
uint8_t driver_id, void *private_data)
{
- sess->sess_private_data[driver_id] = private_data;
+ if (unlikely(sess->nb_drivers <= driver_id)) {
+ CDEV_LOG_ERR("Set private data for driver %u not allowed\n",
+ driver_id);
+ return;
+ }
+
+ sess->sess_data[driver_id].data = private_data;
}
static inline void *