[dpdk-stable] [PATCH] crypto/qat: fix segmentation fault in session create

[Arek Kusztal <arkadiuszx.kusztal@intel.com>]

From: Arkadiusz Kusztal <arkadiuszx.kusztal@intel.com>

This patch fixes segementation fault that may occur in case
of wrong parameters being provided to the cryptographic
session. Unused fields which would cause null dereference
are removed.

Fixes: 1703e94ac5ce ("qat: add driver for QuickAssist devices")

[ backported from upstream commit d099195ae7e0a64aaeba6fed290536f403dd5fe0]

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
---
 drivers/crypto/qat/qat_crypto.c | 13 ++-----------
 drivers/crypto/qat/qat_crypto.h |  3 ---
 2 files changed, 2 insertions(+), 14 deletions(-)

diff --git a/drivers/crypto/qat/qat_crypto.c b/drivers/crypto/qat/qat_crypto.c
index 798cd98..540de59 100644
--- a/drivers/crypto/qat/qat_crypto.c
+++ b/drivers/crypto/qat/qat_crypto.c
@@ -573,11 +573,9 @@ qat_get_cipher_xform(struct rte_crypto_sym_xform *xform)
 	return NULL;
 }
 void *
-qat_crypto_sym_configure_session_cipher(struct rte_cryptodev *dev,
+qat_crypto_sym_configure_session_cipher(struct rte_cryptodev *dev __rte_unused,
 		struct rte_crypto_sym_xform *xform, void *session_private)
 {
-	struct qat_pmd_private *internals = dev->data->dev_private;
-
 	struct qat_session *session = session_private;
 
 	struct rte_crypto_cipher_xform *cipher_xform = NULL;
@@ -674,7 +672,6 @@ qat_crypto_sym_configure_session_cipher(struct rte_cryptodev *dev,
 	return session;
 
 error_out:
-	rte_mempool_put(internals->sess_mp, session);
 	return NULL;
 }
 
@@ -683,8 +680,6 @@ void *
 qat_crypto_sym_configure_session(struct rte_cryptodev *dev,
 		struct rte_crypto_sym_xform *xform, void *session_private)
 {
-	struct qat_pmd_private *internals = dev->data->dev_private;
-
 	struct qat_session *session = session_private;
 
 	int qat_cmd_id;
@@ -733,17 +728,15 @@ qat_crypto_sym_configure_session(struct rte_cryptodev *dev,
 	return session;
 
 error_out:
-	rte_mempool_put(internals->sess_mp, session);
 	return NULL;
 }
 
 struct qat_session *
-qat_crypto_sym_configure_session_auth(struct rte_cryptodev *dev,
+qat_crypto_sym_configure_session_auth(struct rte_cryptodev *dev __rte_unused,
 				struct rte_crypto_sym_xform *xform,
 				struct qat_session *session_private)
 {
 
-	struct qat_pmd_private *internals = dev->data->dev_private;
 	struct qat_session *session = session_private;
 	struct rte_crypto_auth_xform *auth_xform = NULL;
 	struct rte_crypto_cipher_xform *cipher_xform = NULL;
@@ -828,8 +821,6 @@ qat_crypto_sym_configure_session_auth(struct rte_cryptodev *dev,
 	return session;
 
 error_out:
-	if (internals->sess_mp != NULL)
-		rte_mempool_put(internals->sess_mp, session);
 	return NULL;
 }
 
diff --git a/drivers/crypto/qat/qat_crypto.h b/drivers/crypto/qat/qat_crypto.h
index 0afe74e..a3643b5 100644
--- a/drivers/crypto/qat/qat_crypto.h
+++ b/drivers/crypto/qat/qat_crypto.h
@@ -72,9 +72,6 @@ struct qat_qp {
 
 /** private data structure for each QAT device */
 struct qat_pmd_private {
-	char sess_mp_name[RTE_MEMPOOL_NAMESIZE];
-	struct rte_mempool *sess_mp;
-
 	unsigned max_nb_queue_pairs;
 	/**< Max number of queue pairs supported by device */
 	unsigned max_nb_sessions;
-- 
2.1.0