[PATCH] [RFC] cryptodev: replace LIST_END enumerators with APIs

[Akhil Goyal <gakhil@marvell.com>]

Replace *_LIST_END enumerators from asymmetric crypto
lib to avoid ABI breakage for every new addition in
enums with inline APIs.

Signed-off-by: Akhil Goyal <gakhil@marvell.com>
---
This patch was discussed in ML long time back.
https://patches.dpdk.org/project/dpdk/patch/20211008204516.3497060-1-gakhil@marvell.com/
Now added inline APIs for getting the list end which need to be updated
for each new entry to the enum. This shall help in avoiding ABI break
for adding new algo.

 app/test/test_cryptodev_asym.c  |  2 +-
 lib/cryptodev/rte_crypto_asym.h | 18 ++++++++++++++----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/app/test/test_cryptodev_asym.c b/app/test/test_cryptodev_asym.c
index f0b5d38543..f1ece475b8 100644
--- a/app/test/test_cryptodev_asym.c
+++ b/app/test/test_cryptodev_asym.c
@@ -581,7 +581,7 @@ static inline void print_asym_capa(
 			rte_cryptodev_asym_get_xform_string(capa->xform_type));
 	printf("operation supported -");
 
-	for (i = 0; i < RTE_CRYPTO_ASYM_OP_LIST_END; i++) {
+	for (i = 0; i < rte_crypto_asym_op_list_end(); i++) {
 		/* check supported operations */
 		if (rte_cryptodev_asym_xform_capability_check_optype(capa, i)) {
 			if (capa->xform_type == RTE_CRYPTO_ASYM_XFORM_DH)
diff --git a/lib/cryptodev/rte_crypto_asym.h b/lib/cryptodev/rte_crypto_asym.h
index 39d3da3952..290b300f84 100644
--- a/lib/cryptodev/rte_crypto_asym.h
+++ b/lib/cryptodev/rte_crypto_asym.h
@@ -72,6 +72,7 @@ enum rte_crypto_curve_id {
  * Asymmetric crypto transformation types.
  * Each xform type maps to one asymmetric algorithm
  * performing specific operation
+ * Note: Update rte_crypto_asym_xform_type_list_end() for every new type added.
  */
 enum rte_crypto_asym_xform_type {
 	RTE_CRYPTO_ASYM_XFORM_UNSPECIFIED = 0,
@@ -119,12 +120,17 @@ enum rte_crypto_asym_xform_type {
 	 * Performs Encrypt, Decrypt, Sign and Verify.
 	 * Refer to rte_crypto_asym_op_type.
 	 */
-	RTE_CRYPTO_ASYM_XFORM_TYPE_LIST_END
-	/**< End of list */
 };
 
+static inline int
+rte_crypto_asym_xform_type_list_end(void)
+{
+	return RTE_CRYPTO_ASYM_XFORM_SM2 + 1;
+}
+
 /**
  * Asymmetric crypto operation type variants
+ * Note: Update rte_crypto_asym_op_list_end for every new type added.
  */
 enum rte_crypto_asym_op_type {
 	RTE_CRYPTO_ASYM_OP_ENCRYPT,
@@ -135,9 +141,14 @@ enum rte_crypto_asym_op_type {
 	/**< Signature Generation operation */
 	RTE_CRYPTO_ASYM_OP_VERIFY,
 	/**< Signature Verification operation */
-	RTE_CRYPTO_ASYM_OP_LIST_END
 };
 
+static inline int
+rte_crypto_asym_op_list_end(void)
+{
+	return RTE_CRYPTO_ASYM_OP_VERIFY + 1;
+}
+
 /**
  * Asymmetric crypto key exchange operation type
  */
@@ -168,7 +179,6 @@ enum rte_crypto_rsa_padding_type {
 	/**< RSA PKCS#1 OAEP padding scheme */
 	RTE_CRYPTO_RSA_PADDING_PSS,
 	/**< RSA PKCS#1 PSS padding scheme */
-	RTE_CRYPTO_RSA_PADDING_TYPE_LIST_END
 };
 
 /**
-- 
2.25.1