From: wenxu <we...@ucloud.cn>

If the mlx5_flow_tunnel_validate validate the flow tunnel
rule failed, the err_msg is empty in the rte_flow_error.

Fixes: 4ec6360de37d ("net/mlx5: implement tunnel offload")

Signed-off-by: wenxu <we...@ucloud.cn>
---
 drivers/net/mlx5/mlx5_flow.c | 43 ++++++++++++++++++++-----------------------
 1 file changed, 20 insertions(+), 23 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index e63a297..3c5aca0 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -9081,30 +9081,31 @@ int mlx5_alloc_tunnel_hub(struct mlx5_dev_ctx_shared 
*sh)
        return err;
 }
 
-static inline bool
+static inline int
 mlx5_flow_tunnel_validate(struct rte_eth_dev *dev,
                          struct rte_flow_tunnel *tunnel,
-                         const char *err_msg)
+                         struct rte_flow_error *error)
 {
-       err_msg = NULL;
        if (!is_tunnel_offload_active(dev)) {
-               err_msg = "tunnel offload was not activated";
-               goto out;
+               return rte_flow_error_set(error, EINVAL,
+                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
+                                         "tunnel offload was not activated");
        } else if (!tunnel) {
-               err_msg = "no application tunnel";
-               goto out;
+               return rte_flow_error_set(error, EINVAL,
+                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
+                                         "no application tunnel");
        }
 
        switch (tunnel->type) {
        default:
-               err_msg = "unsupported tunnel type";
-               goto out;
+               return rte_flow_error_set(error, EINVAL,
+                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
+                                         "unsupported tunnel type");
        case RTE_FLOW_ITEM_TYPE_VXLAN:
                break;
        }
 
-out:
-       return !err_msg;
+       return 0;
 }
 
 static int
@@ -9116,13 +9117,11 @@ int mlx5_alloc_tunnel_hub(struct mlx5_dev_ctx_shared 
*sh)
 {
        int ret;
        struct mlx5_flow_tunnel *tunnel;
-       const char *err_msg = NULL;
-       bool verdict = mlx5_flow_tunnel_validate(dev, app_tunnel, err_msg);
 
-       if (!verdict)
-               return rte_flow_error_set(error, EINVAL,
-                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
-                                         err_msg);
+       ret = mlx5_flow_tunnel_validate(dev, app_tunnel, error);
+       if (ret < 0)
+               return ret;
+
        ret = mlx5_get_flow_tunnel(dev, app_tunnel, &tunnel);
        if (ret < 0) {
                return rte_flow_error_set(error, ret,
@@ -9143,13 +9142,11 @@ int mlx5_alloc_tunnel_hub(struct mlx5_dev_ctx_shared 
*sh)
 {
        int ret;
        struct mlx5_flow_tunnel *tunnel;
-       const char *err_msg = NULL;
-       bool verdict = mlx5_flow_tunnel_validate(dev, app_tunnel, err_msg);
 
-       if (!verdict)
-               return rte_flow_error_set(error, EINVAL,
-                                         RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
-                                         err_msg);
+       ret = mlx5_flow_tunnel_validate(dev, app_tunnel, error);
+       if (ret < 0)
+               return ret;
+
        ret = mlx5_get_flow_tunnel(dev, app_tunnel, &tunnel);
        if (ret < 0) {
                return rte_flow_error_set(error, ret,
-- 
1.8.3.1

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