[dpdk-dev] [PATCH] common/cnxk: allocate auth key mem dynamically

[Anoob Joseph <anoobj@marvell.com>]

Reduce session private data size by allocating auth_key dynamically as
required.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
---
 drivers/common/cnxk/roc_se.c             |  6 +++++-
 drivers/common/cnxk/roc_se.h             |  2 +-
 drivers/crypto/cnxk/cnxk_cryptodev_ops.c | 11 +++++++++++
 drivers/crypto/cnxk/cnxk_se.h            |  3 +--
 4 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/drivers/common/cnxk/roc_se.c b/drivers/common/cnxk/roc_se.c
index 3f74175..b04de79 100644
--- a/drivers/common/cnxk/roc_se.c
+++ b/drivers/common/cnxk/roc_se.c
@@ -206,7 +206,11 @@ roc_se_auth_key_set(struct roc_se_ctx *se_ctx, roc_se_auth_type type,
 
 	if (key_len) {
 		se_ctx->hmac = 1;
-		memset(se_ctx->auth_key, 0, sizeof(se_ctx->auth_key));
+
+		se_ctx->auth_key = plt_zmalloc(key_len, 8);
+		if (se_ctx->auth_key == NULL)
+			return -1;
+
 		memcpy(se_ctx->auth_key, key, key_len);
 		se_ctx->auth_key_len = key_len;
 		memset(fctx->hmac.ipad, 0, sizeof(fctx->hmac.ipad));
diff --git a/drivers/common/cnxk/roc_se.h b/drivers/common/cnxk/roc_se.h
index 43a40dd..5c7e2ca 100644
--- a/drivers/common/cnxk/roc_se.h
+++ b/drivers/common/cnxk/roc_se.h
@@ -261,7 +261,7 @@ struct roc_se_ctx {
 		struct roc_se_zuc_snow3g_ctx zs_ctx;
 		struct roc_se_kasumi_ctx k_ctx;
 	} se_ctx;
-	uint8_t auth_key[1024];
+	uint8_t *auth_key;
 };
 
 int __roc_api roc_se_auth_key_set(struct roc_se_ctx *se_ctx,
diff --git a/drivers/crypto/cnxk/cnxk_cryptodev_ops.c b/drivers/crypto/cnxk/cnxk_cryptodev_ops.c
index 694eef7..440dbc3a 100644
--- a/drivers/crypto/cnxk/cnxk_cryptodev_ops.c
+++ b/drivers/crypto/cnxk/cnxk_cryptodev_ops.c
@@ -552,6 +552,11 @@ sym_session_configure(struct roc_cpt *roc_cpt, int driver_id,
 	if ((sess_priv->roc_se_ctx.fc_type == ROC_SE_HASH_HMAC) &&
 	    cpt_mac_len_verify(&xform->auth)) {
 		plt_dp_err("MAC length is not supported");
+		if (sess_priv->roc_se_ctx.auth_key != NULL) {
+			plt_free(sess_priv->roc_se_ctx.auth_key);
+			sess_priv->roc_se_ctx.auth_key = NULL;
+		}
+
 		ret = -ENOTSUP;
 		goto priv_put;
 	}
@@ -587,11 +592,17 @@ void
 sym_session_clear(int driver_id, struct rte_cryptodev_sym_session *sess)
 {
 	void *priv = get_sym_session_private_data(sess, driver_id);
+	struct cnxk_se_sess *sess_priv;
 	struct rte_mempool *pool;
 
 	if (priv == NULL)
 		return;
 
+	sess_priv = priv;
+
+	if (sess_priv->roc_se_ctx.auth_key != NULL)
+		plt_free(sess_priv->roc_se_ctx.auth_key);
+
 	memset(priv, 0, cnxk_cpt_sym_session_get_size(NULL));
 
 	pool = rte_mempool_from_obj(priv);
diff --git a/drivers/crypto/cnxk/cnxk_se.h b/drivers/crypto/cnxk/cnxk_se.h
index d83910f..3ed6b90 100644
--- a/drivers/crypto/cnxk/cnxk_se.h
+++ b/drivers/crypto/cnxk/cnxk_se.h
@@ -273,8 +273,7 @@ cpt_digest_gen_prep(uint32_t flags, uint64_t d_lens,
 	i = 0;
 
 	if (ctx->hmac) {
-		uint64_t k_vaddr = (uint64_t)params->ctx_buf.vaddr +
-				   offsetof(struct roc_se_ctx, auth_key);
+		uint64_t k_vaddr = (uint64_t)ctx->auth_key;
 		/* Key */
 		i = fill_sg_comp(gather_comp, i, k_vaddr,
 				 RTE_ALIGN_CEIL(key_len, 8));
-- 
2.7.4