[dpdk-dev] [PATCH 2/6] crypto/octeontx2: allocate memory for asymmetric operation

[Anoob Joseph <anoobj@marvell.com>]

From: Kanaka Durga Kotamarthy <kkotamarthy@marvell.com>

This patch determines metabuf length needed to perform asymmetric crypto
operation.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Kanaka Durga Kotamarthy <kkotamarthy@marvell.com>
Signed-off-by: Sunila Sahu <ssahu@marvell.com>
---
 drivers/crypto/octeontx2/otx2_cryptodev_ops.c | 37 +++++++++++++++++++--------
 1 file changed, 26 insertions(+), 11 deletions(-)

diff --git a/drivers/crypto/octeontx2/otx2_cryptodev_ops.c b/drivers/crypto/octeontx2/otx2_cryptodev_ops.c
index b21714c..6050b18 100644
--- a/drivers/crypto/octeontx2/otx2_cryptodev_ops.c
+++ b/drivers/crypto/octeontx2/otx2_cryptodev_ops.c
@@ -38,24 +38,39 @@ otx2_cpt_metabuf_mempool_create(const struct rte_cryptodev *dev,
 				int nb_elements)
 {
 	char mempool_name[RTE_MEMPOOL_NAMESIZE];
-	int sg_mlen, lb_mlen, max_mlen, ret;
 	struct cpt_qp_meta_info *meta_info;
 	struct rte_mempool *pool;
+	int ret, max_mlen;
+	int asym_mlen = 0;
+	int lb_mlen = 0;
+	int sg_mlen = 0;
 
-	/* Get meta len for scatter gather mode */
-	sg_mlen = cpt_pmd_ops_helper_get_mlen_sg_mode();
+	if (dev->feature_flags & RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO) {
 
-	/* Extra 32B saved for future considerations */
-	sg_mlen += 4 * sizeof(uint64_t);
+		/* Get meta len for scatter gather mode */
+		sg_mlen = cpt_pmd_ops_helper_get_mlen_sg_mode();
 
-	/* Get meta len for linear buffer (direct) mode */
-	lb_mlen = cpt_pmd_ops_helper_get_mlen_direct_mode();
+		/* Extra 32B saved for future considerations */
+		sg_mlen += 4 * sizeof(uint64_t);
 
-	/* Extra 32B saved for future considerations */
-	lb_mlen += 4 * sizeof(uint64_t);
+		/* Get meta len for linear buffer (direct) mode */
+		lb_mlen = cpt_pmd_ops_helper_get_mlen_direct_mode();
 
-	/* Check max requirement for meta buffer */
-	max_mlen = RTE_MAX(lb_mlen, sg_mlen);
+		/* Extra 32B saved for future considerations */
+		lb_mlen += 4 * sizeof(uint64_t);
+	}
+
+	if (dev->feature_flags & RTE_CRYPTODEV_FF_ASYMMETRIC_CRYPTO) {
+
+		/* Get meta len required for asymmetric operations */
+		asym_mlen = cpt_pmd_ops_helper_asym_get_mlen();
+	}
+
+	/*
+	 * Check max requirement for meta buffer to
+	 * support crypto op of any type (sym/asym).
+	 */
+	max_mlen = RTE_MAX(RTE_MAX(lb_mlen, sg_mlen), asym_mlen);
 
 	/* Allocate mempool */
 
-- 
2.7.4