net/mlx5: fix errno for unsupported Direct Rules

When Direct Rules API is not supported we don't set the errno.
This results in failing the function but with errno equals to zero.
The result of this is that a function that failed, is considered as
a function that worked correctly.

This commit fixes this issue by setting the errno to ENOTSUP and
returning this error when error value should be returned.

Since RDMA-CORE are returning positive errno we are also returning
positive error values.

Fixes: 4f84a19779ca ("net/mlx5: add Direct Rules API")

Signed-off-by: Ori Kam <orika@mellanox.com>
Acked-by: Shahaf Shuler <shahafs@mellanox.com>

diff --git a/drivers/net/mlx5/mlx5_glue.c b/drivers/net/mlx5/mlx5_glue.c
index 6172e0d..21cd3bb 100644 (file)
--- a/drivers/net/mlx5/mlx5_glue.c
+++ b/drivers/net/mlx5/mlx5_glue.c
@@ -296,6 +296,7 @@ mlx5_glue_create_counters(struct ibv_context *context,
 #ifndef HAVE_IBV_DEVICE_COUNTERS_SET_V45
        (void)context;
        (void)init_attr;
+       errno = ENOTSUP;
        return NULL;
 #else
        return ibv_create_counters(context, init_attr);
@@ -377,6 +378,7 @@ mlx5_glue_dr_create_flow_action_dest_flow_tbl(void *tbl)
        return mlx5dv_dr_action_create_dest_table(tbl);
 #else
        (void)tbl;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -389,6 +391,7 @@ mlx5_glue_dr_create_flow_action_dest_vport(void *domain, uint32_t vport)
 #else
        (void)domain;
        (void)vport;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -399,6 +402,7 @@ mlx5_glue_dr_create_flow_action_drop(void)
 #ifdef HAVE_MLX5DV_DR_ESWITCH
        return mlx5dv_dr_action_create_drop();
 #else
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -411,6 +415,7 @@ mlx5_glue_dr_create_flow_tbl(void *domain, uint32_t level)
 #else
        (void)domain;
        (void)level;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -422,7 +427,8 @@ mlx5_glue_dr_destroy_flow_tbl(void *tbl)
        return mlx5dv_dr_table_destroy(tbl);
 #else
        (void)tbl;
-       return 0;
+       errno = ENOTSUP;
+       return errno;
 #endif
 }
 
@@ -435,6 +441,7 @@ mlx5_glue_dr_create_domain(struct ibv_context *ctx,
 #else
        (void)ctx;
        (void)domain;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -446,7 +453,8 @@ mlx5_glue_dr_destroy_domain(void *domain)
        return mlx5dv_dr_domain_destroy(domain);
 #else
        (void)domain;
-       return 0;
+       errno = ENOTSUP;
+       return errno;
 #endif
 }
 
@@ -467,6 +475,7 @@ mlx5_glue_dv_create_wq(struct ibv_context *context,
        (void)context;
        (void)wq_attr;
        (void)mlx5_wq_attr;
+       errno = ENOTSUP;
        return NULL;
 #else
        return mlx5dv_create_wq(context, wq_attr, mlx5_wq_attr);
@@ -504,6 +513,7 @@ mlx5_glue_dv_create_qp(struct ibv_context *context,
        (void)context;
        (void)qp_init_attr_ex;
        (void)dv_qp_init_attr;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -527,6 +537,7 @@ mlx5_glue_dv_create_flow_matcher(struct ibv_context *context,
        (void)context;
        (void)matcher_attr;
        (void)tbl;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -581,6 +592,7 @@ mlx5_glue_dv_create_flow_action_counter(void *counter_obj, uint32_t offset)
 #else
        (void)counter_obj;
        (void)offset;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -603,6 +615,7 @@ mlx5_glue_dv_create_flow_action_dest_ibv_qp(void *qp)
 #endif
 #else
        (void)qp;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -641,6 +654,7 @@ mlx5_glue_dv_create_flow_action_modify_header
        (void)flags;
        (void)actions_sz;
        (void)actions;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -681,6 +695,7 @@ mlx5_glue_dv_create_flow_action_packet_reformat
        (void)flags;
        (void)data_sz;
        (void)data;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -702,6 +717,7 @@ mlx5_glue_dv_create_flow_action_tag(uint32_t tag)
 #endif
 #endif
        (void)tag;
+       errno = ENOTSUP;
        return NULL;
 }
 
@@ -726,7 +742,8 @@ mlx5_glue_dv_destroy_flow_matcher(void *matcher)
 #endif
 #else
        (void)matcher;
-       return 0;
+       errno = ENOTSUP;
+       return errno;
 #endif
 }
 
@@ -740,6 +757,7 @@ mlx5_glue_dv_open_device(struct ibv_device *device)
                                  });
 #else
        (void)device;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }
@@ -757,6 +775,7 @@ mlx5_glue_devx_obj_create(struct ibv_context *ctx,
        (void)inlen;
        (void)out;
        (void)outlen;
+       errno = ENOTSUP;
        return NULL;
 #endif
 }