[dpdk-dev] [PATCH v2 3/4] crypto/octeontx2: add ECPM support

[Anoob Joseph <anoobj@marvell.com>]

From: Sunila Sahu <ssahu@marvell.com>

Add support asymmetric operation EC Point MUltiplication,
in crypto_octeontx2 PMD.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Balakrishna Bhamidipati <bbhamidipati@marvell.com>
Signed-off-by: Sunila Sahu <ssahu@marvell.com>
---
 doc/guides/cryptodevs/features/octeontx2.ini       |  1 +
 .../crypto/octeontx2/otx2_cryptodev_capabilities.c | 10 ++++++++++
 drivers/crypto/octeontx2/otx2_cryptodev_ops.c      | 22 ++++++++++++++++++++++
 3 files changed, 33 insertions(+)

diff --git a/doc/guides/cryptodevs/features/octeontx2.ini b/doc/guides/cryptodevs/features/octeontx2.ini
index dd6369b..4693458 100644
--- a/doc/guides/cryptodevs/features/octeontx2.ini
+++ b/doc/guides/cryptodevs/features/octeontx2.ini
@@ -73,3 +73,4 @@ Modular Exponentiation  = Y
 Modular Inversion       =
 Diffie-hellman          =
 ECDSA                   = Y
+ECPM                    = Y
diff --git a/drivers/crypto/octeontx2/otx2_cryptodev_capabilities.c b/drivers/crypto/octeontx2/otx2_cryptodev_capabilities.c
index f2079e2..83f885c 100644
--- a/drivers/crypto/octeontx2/otx2_cryptodev_capabilities.c
+++ b/drivers/crypto/octeontx2/otx2_cryptodev_capabilities.c
@@ -639,6 +639,16 @@ rte_cryptodev_capabilities otx2_cpt_capabilities[] = {
 			},
 		}
 	},
+	{	/* ECPM */
+		.op = RTE_CRYPTO_OP_TYPE_ASYMMETRIC,
+		{.asym = {
+			.xform_capa = {
+				.xform_type = RTE_CRYPTO_ASYM_XFORM_ECPM,
+				.op_types = 0
+				}
+			},
+		}
+	},
 	/* End of asymmetric capabilities */
 	RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
 };
diff --git a/drivers/crypto/octeontx2/otx2_cryptodev_ops.c b/drivers/crypto/octeontx2/otx2_cryptodev_ops.c
index 17c755d..ec0e58d 100644
--- a/drivers/crypto/octeontx2/otx2_cryptodev_ops.c
+++ b/drivers/crypto/octeontx2/otx2_cryptodev_ops.c
@@ -447,6 +447,12 @@ otx2_cpt_enqueue_asym(struct otx2_cpt_qp *qp,
 		if (unlikely(ret))
 			goto req_fail;
 		break;
+	case RTE_CRYPTO_ASYM_XFORM_ECPM:
+		ret = cpt_ecpm_prep(&asym_op->ecpm, &params,
+				    sess->ec_ctx.curveid);
+		if (unlikely(ret))
+			goto req_fail;
+		break;
 	default:
 		op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
 		ret = -EINVAL;
@@ -665,6 +671,19 @@ otx2_cpt_asym_dequeue_ecdsa_op(struct rte_crypto_ecdsa_op_param *ecdsa,
 	ecdsa->s.length = prime_len;
 }
 
+static __rte_always_inline void
+otx2_cpt_asym_dequeue_ecpm_op(struct rte_crypto_ecpm_op_param *ecpm,
+			     struct cpt_request_info *req,
+			     struct cpt_asym_ec_ctx *ec)
+{
+	int prime_len = ec_grp[ec->curveid].prime.length;
+
+	memcpy(ecpm->r.x.data, req->rptr, prime_len);
+	memcpy(ecpm->r.y.data, req->rptr + ROUNDUP8(prime_len), prime_len);
+	ecpm->r.x.length = prime_len;
+	ecpm->r.y.length = prime_len;
+}
+
 static void
 otx2_cpt_asym_post_process(struct rte_crypto_op *cop,
 			   struct cpt_request_info *req)
@@ -687,6 +706,9 @@ otx2_cpt_asym_post_process(struct rte_crypto_op *cop,
 	case RTE_CRYPTO_ASYM_XFORM_ECDSA:
 		otx2_cpt_asym_dequeue_ecdsa_op(&op->ecdsa, req, &sess->ec_ctx);
 		break;
+	case RTE_CRYPTO_ASYM_XFORM_ECPM:
+		otx2_cpt_asym_dequeue_ecpm_op(&op->ecpm, req, &sess->ec_ctx);
+		break;
 	default:
 		CPT_LOG_DP_DEBUG("Invalid crypto xform type");
 		cop->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
-- 
2.7.4