[dpdk-dev] [PATCH 2/5] ethdev: modify flow API's error setting function

[Adrien Mazarguil]

Based on initial PMD implementations of the flow API, returning the error
structure which may be NULL is useless and always discarded.

Returning the error code instead appears to be much more convenient.

Signed-off-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com>
Cc: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
Cc: Wei Zhao <wei.zhao1 at intel.com>
Cc: Beilei Xing <beilei.xing at intel.com>
---
 lib/librte_ether/rte_flow.c        | 24 ++++++++++++------------
 lib/librte_ether/rte_flow_driver.h |  6 +++---
 2 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/lib/librte_ether/rte_flow.c b/lib/librte_ether/rte_flow.c
index d98fb1b..aaa70d6 100644
--- a/lib/librte_ether/rte_flow.c
+++ b/lib/librte_ether/rte_flow.c
@@ -78,9 +78,9 @@ rte_flow_validate(uint8_t port_id,
 		return -rte_errno;
 	if (likely(!!ops->validate))
 		return ops->validate(dev, attr, pattern, actions, error);
-	rte_flow_error_set(error, ENOSYS, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
-			   NULL, rte_strerror(ENOSYS));
-	return -rte_errno;
+	return -rte_flow_error_set(error, ENOSYS,
+				   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				   NULL, rte_strerror(ENOSYS));
 }
 
 /* Create a flow rule on a given port. */
@@ -116,9 +116,9 @@ rte_flow_destroy(uint8_t port_id,
 		return -rte_errno;
 	if (likely(!!ops->destroy))
 		return ops->destroy(dev, flow, error);
-	rte_flow_error_set(error, ENOSYS, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
-			   NULL, rte_strerror(ENOSYS));
-	return -rte_errno;
+	return -rte_flow_error_set(error, ENOSYS,
+				   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				   NULL, rte_strerror(ENOSYS));
 }
 
 /* Destroy all flow rules associated with a port. */
@@ -133,9 +133,9 @@ rte_flow_flush(uint8_t port_id,
 		return -rte_errno;
 	if (likely(!!ops->flush))
 		return ops->flush(dev, error);
-	rte_flow_error_set(error, ENOSYS, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
-			   NULL, rte_strerror(ENOSYS));
-	return -rte_errno;
+	return -rte_flow_error_set(error, ENOSYS,
+				   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				   NULL, rte_strerror(ENOSYS));
 }
 
 /* Query an existing flow rule. */
@@ -153,7 +153,7 @@ rte_flow_query(uint8_t port_id,
 		return -rte_errno;
 	if (likely(!!ops->query))
 		return ops->query(dev, flow, action, data, error);
-	rte_flow_error_set(error, ENOSYS, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
-			   NULL, rte_strerror(ENOSYS));
-	return -rte_errno;
+	return -rte_flow_error_set(error, ENOSYS,
+				   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				   NULL, rte_strerror(ENOSYS));
 }
diff --git a/lib/librte_ether/rte_flow_driver.h b/lib/librte_ether/rte_flow_driver.h
index cc97785..d020536 100644
--- a/lib/librte_ether/rte_flow_driver.h
+++ b/lib/librte_ether/rte_flow_driver.h
@@ -139,9 +139,9 @@ struct rte_flow_ops {
  *   Human-readable error message.
  *
  * @return
- *   Pointer to flow error structure.
+ *   Error code (\code).
  */
-static inline struct rte_flow_error *
+static inline int
 rte_flow_error_set(struct rte_flow_error *error,
 		   int code,
 		   enum rte_flow_error_type type,
@@ -156,7 +156,7 @@ rte_flow_error_set(struct rte_flow_error *error,
 		};
 	}
 	rte_errno = code;
-	return error;
+	return code;
 }
 
 /**
-- 
2.1.4