[dpdk-dev] [RFC PATCH 3/3] crypto/armv8: fix clang build

[Ruifeng Wang <ruifeng.wang@arm.com>]

1. Clang requires braces around initialization of subobject.
2. Clang complains implicit conversion of enumeration type.

Trapped issue with Clang version 8.0 and CONFIG_RTE_LIBRTE_PMD_ARMV8_CRYPTO
was set.
Error messages:
rte_armv8_pmd.c:144:2: error: suggest braces around initialization of
 subobject [-Werror,-Wmissing-braces]
        NULL
        ^~~~
        {   }
/usr/lib/llvm-8/lib/clang/8.0.0/include/stddef.h:105:16: note: expanded
 from macro 'NULL'
               ^~~~~~~~~~
rte_armv8_pmd.c:429:21: error: implicit conversion from enumeration
 type 'enum rte_crypto_cipher_operation' to different enumeration type
      'enum armv8_crypto_cipher_operation' [-Werror,-Wenum-conversion]
        cop = sess->cipher.direction;
            ~ ~~~~~~~~~~~~~^~~~~~~~~

Fixes: 169ca3db550c ("crypto/armv8: add PMD optimized for ARMv8 processors")
Cc: stable@dpdk.org

Signed-off-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
---
 drivers/crypto/armv8/rte_armv8_pmd.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/crypto/armv8/rte_armv8_pmd.c b/drivers/crypto/armv8/rte_armv8_pmd.c
index 2b2c5a3bf..f6997e2e9 100644
--- a/drivers/crypto/armv8/rte_armv8_pmd.c
+++ b/drivers/crypto/armv8/rte_armv8_pmd.c
@@ -86,12 +86,12 @@ crypto_op_ca_encrypt = {
 
 static const crypto_func_tbl_t
 crypto_op_ca_decrypt = {
-	NULL
+	{{NULL}}
 };
 
 static const crypto_func_tbl_t
 crypto_op_ac_encrypt = {
-	NULL
+	{{NULL}}
 };
 
 static const crypto_func_tbl_t
@@ -377,7 +377,16 @@ armv8_crypto_set_session_chained_parameters(struct armv8_crypto_session *sess,
 	/* Select cipher key */
 	sess->cipher.key.length = cipher_xform->cipher.key.length;
 	/* Set cipher direction */
-	cop = sess->cipher.direction;
+	switch (sess->cipher.direction) {
+	case RTE_CRYPTO_CIPHER_OP_ENCRYPT:
+		cop = ARMV8_CRYPTO_CIPHER_OP_ENCRYPT;
+		break;
+	case RTE_CRYPTO_CIPHER_OP_DECRYPT:
+		cop = ARMV8_CRYPTO_CIPHER_OP_DECRYPT;
+		break;
+	default:
+		return -ENOTSUP;
+	}
 	/* Set cipher algorithm */
 	calg = cipher_xform->cipher.algo;
 
-- 
2.17.1