[PATCH v2 3/4] crypto/ipsec_mb: fix crypto operation overwrite

[Pablo de Lara <pablo.de.lara.guarch@intel.com>]

ZUC PMD batches crypto operations depending on their type
(encryption + tag generation, tag verification + decryption, etc),
to allow parallelization.
The array used to store the pointers to these operations was
always the same array provided by dequeue_burst() function,
and it was looping around the same positions (from 0 to ZUC_MAX_BURST - 1).

A new internal array is used to avoid overwriting the pointers
of the array provided by dequeue_burst() function.

Fixes: cf7685d68f00 ("crypto/zuc: add driver for ZUC library")
Cc: pablo.de.lara.guarch@intel.com
Cc: stable@dpdk.org

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
 drivers/crypto/ipsec_mb/pmd_zuc.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/crypto/ipsec_mb/pmd_zuc.c b/drivers/crypto/ipsec_mb/pmd_zuc.c
index 07cf1462d2..e36c7092d6 100644
--- a/drivers/crypto/ipsec_mb/pmd_zuc.c
+++ b/drivers/crypto/ipsec_mb/pmd_zuc.c
@@ -259,6 +259,7 @@ zuc_pmd_dequeue_burst(void *queue_pair,
 
 	struct zuc_session *curr_sess;
 	struct zuc_session *sessions[ZUC_MAX_BURST];
+	struct rte_crypto_op *int_c_ops[ZUC_MAX_BURST];
 	enum ipsec_mb_operation prev_zuc_op = IPSEC_MB_OP_NOT_SUPPORTED;
 	enum ipsec_mb_operation curr_zuc_op;
 	struct ipsec_mb_qp *qp = queue_pair;
@@ -290,11 +291,11 @@ zuc_pmd_dequeue_burst(void *queue_pair,
 		 */
 		if (burst_size == 0) {
 			prev_zuc_op = curr_zuc_op;
-			c_ops[0] = curr_c_op;
+			int_c_ops[0] = curr_c_op;
 			sessions[0] = curr_sess;
 			burst_size++;
 		} else if (curr_zuc_op == prev_zuc_op) {
-			c_ops[burst_size] = curr_c_op;
+			int_c_ops[burst_size] = curr_c_op;
 			sessions[burst_size] = curr_sess;
 			burst_size++;
 			/*
@@ -302,7 +303,7 @@ zuc_pmd_dequeue_burst(void *queue_pair,
 			 * process them, and start a new batch.
 			 */
 			if (burst_size == ZUC_MAX_BURST) {
-				processed_ops = process_ops(c_ops, curr_zuc_op,
+				processed_ops = process_ops(int_c_ops, curr_zuc_op,
 						sessions, qp, burst_size);
 				if (processed_ops < burst_size) {
 					burst_size = 0;
@@ -316,7 +317,7 @@ zuc_pmd_dequeue_burst(void *queue_pair,
 			 * Different operation type, process the ops
 			 * of the previous type.
 			 */
-			processed_ops = process_ops(c_ops, prev_zuc_op,
+			processed_ops = process_ops(int_c_ops, prev_zuc_op,
 					sessions, qp, burst_size);
 			if (processed_ops < burst_size) {
 				burst_size = 0;
@@ -326,7 +327,7 @@ zuc_pmd_dequeue_burst(void *queue_pair,
 			burst_size = 0;
 			prev_zuc_op = curr_zuc_op;
 
-			c_ops[0] = curr_c_op;
+			int_c_ops[0] = curr_c_op;
 			sessions[0] = curr_sess;
 			burst_size++;
 		}
@@ -334,7 +335,7 @@ zuc_pmd_dequeue_burst(void *queue_pair,
 
 	if (burst_size != 0) {
 		/* Process the crypto ops of the last operation type. */
-		processed_ops = process_ops(c_ops, prev_zuc_op,
+		processed_ops = process_ops(int_c_ops, prev_zuc_op,
 				sessions, qp, burst_size);
 	}
 
-- 
2.25.1