common/cpt: add helper functions for asymmetric crypto

Add helper functions to get meta len for asymmetric operations

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>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>

diff --git a/drivers/common/cpt/cpt_pmd_ops_helper.c b/drivers/common/cpt/cpt_pmd_ops_helper.c
index 1c18180..09b762f 100644 (file)
--- a/drivers/common/cpt/cpt_pmd_ops_helper.c
+++ b/drivers/common/cpt/cpt_pmd_ops_helper.c
@@ -11,6 +11,8 @@
 
 #define CPT_MAX_IV_LEN 16
 #define CPT_OFFSET_CONTROL_BYTES 8
+#define CPT_MAX_ASYM_OP_NUM_PARAMS 5
+#define CPT_MAX_ASYM_OP_MOD_LEN 1024
 
 int32_t
 cpt_pmd_ops_helper_get_mlen_direct_mode(void)
@@ -39,3 +41,16 @@ cpt_pmd_ops_helper_get_mlen_sg_mode(void)
        len += 2 * sizeof(cpt_res_s_t);
        return len;
 }
+
+int
+cpt_pmd_ops_helper_asym_get_mlen(void)
+{
+       uint32_t len;
+
+       /* Get meta len for linear buffer (direct) mode */
+       len = cpt_pmd_ops_helper_get_mlen_direct_mode();
+
+       /* Get meta len for asymmetric operations */
+       len += CPT_MAX_ASYM_OP_NUM_PARAMS * CPT_MAX_ASYM_OP_MOD_LEN;
+       return len;
+}

diff --git a/drivers/common/cpt/cpt_pmd_ops_helper.h b/drivers/common/cpt/cpt_pmd_ops_helper.h
index dd32f9a..24c3559 100644 (file)
--- a/drivers/common/cpt/cpt_pmd_ops_helper.h
+++ b/drivers/common/cpt/cpt_pmd_ops_helper.h
@@ -31,4 +31,13 @@ cpt_pmd_ops_helper_get_mlen_direct_mode(void);
  */
 int
 cpt_pmd_ops_helper_get_mlen_sg_mode(void);
+
+/*
+ * Get size of meta buffer to be allocated for asymmetric crypto operations
+ *
+ * @return
+ *  - length
+ */
+int
+cpt_pmd_ops_helper_asym_get_mlen(void);
 #endif /* _CPT_PMD_OPS_HELPER_H_ */

diff --git a/drivers/common/cpt/rte_common_cpt_version.map b/drivers/common/cpt/rte_common_cpt_version.map
index dec614f..382ec4b 100644 (file)
--- a/drivers/common/cpt/rte_common_cpt_version.map
+++ b/drivers/common/cpt/rte_common_cpt_version.map
@@ -4,3 +4,11 @@ DPDK_18.11 {
        cpt_pmd_ops_helper_get_mlen_direct_mode;
        cpt_pmd_ops_helper_get_mlen_sg_mode;
 };
+
+DPDK_19.11 {
+       global:
+
+       cpt_pmd_ops_helper_asym_get_mlen;
+
+       local: *;
+};

diff --git a/drivers/crypto/octeontx/otx_cryptodev_hw_access.c b/drivers/crypto/octeontx/otx_cryptodev_hw_access.c
index ad64bf4..ce546c2 100644 (file)
--- a/drivers/crypto/octeontx/otx_cryptodev_hw_access.c
+++ b/drivers/crypto/octeontx/otx_cryptodev_hw_access.c
@@ -412,24 +412,41 @@ otx_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 max_mlen = 0;
+       int sg_mlen = 0;
+       int lb_mlen = 0;
+       int ret;
 
-       /* Get meta len for scatter gather mode */
-       sg_mlen = cpt_pmd_ops_helper_get_mlen_sg_mode();
+       /*
+        * Calculate metabuf length required. The 'crypto_octeontx' device
+        * would be either SYMMETRIC or ASYMMETRIC.
+        */
 
-       /* Extra 32B saved for future considerations */
-       sg_mlen += 4 * sizeof(uint64_t);
+       if (dev->feature_flags & RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO) {
 
-       /* Get meta len for linear buffer (direct) mode */
-       lb_mlen = cpt_pmd_ops_helper_get_mlen_direct_mode();
+               /* Get meta len for scatter gather mode */
+               sg_mlen = cpt_pmd_ops_helper_get_mlen_sg_mode();
 
-       /* Extra 32B saved for future considerations */
-       lb_mlen += 4 * sizeof(uint64_t);
+               /* Extra 32B saved for future considerations */
+               sg_mlen += 4 * sizeof(uint64_t);
 
-       /* Check max requirement for meta buffer */
-       max_mlen = RTE_MAX(lb_mlen, sg_mlen);
+               /* Get meta len for linear buffer (direct) mode */
+               lb_mlen = cpt_pmd_ops_helper_get_mlen_direct_mode();
+
+               /* Extra 32B saved for future considerations */
+               lb_mlen += 4 * sizeof(uint64_t);
+
+               /* Check max requirement for meta buffer */
+               max_mlen = RTE_MAX(lb_mlen, sg_mlen);
+       } else {
+
+               /* Asymmetric device */
+
+               /* Get meta len for asymmetric operations */
+               max_mlen = cpt_pmd_ops_helper_asym_get_mlen();
+       }
 
        /* Allocate mempool */