[dpdk-stable] [PATCH v2 14/25] net/mlx5: fix redundant Direct Verbs resources allocate

[Suanming Mou]

All table, tag, header modify, header reformat are supported only on DV
mode. For the OFED version doesn't support these, create the related
redundant DV resources waste the memory.

Add the code section in the HAVE_IBV_FLOW_DV_SUPPORT macro to avoid the
redundant resources allocation.

Fixes: 2eb4d0107acc ("net/mlx5: refactor PCI probing on Linux")
Cc: stable at dpdk.org
Signed-off-by: Suanming Mou <suanmingm at nvidia.com>
Acked-by: Matan Azrad <matan at nvidia.com>
---
 drivers/net/mlx5/linux/mlx5_os.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index 929fed2..6b60d56 100644
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c
@@ -225,7 +225,7 @@
 mlx5_alloc_shared_dr(struct mlx5_priv *priv)
 {
 	struct mlx5_dev_ctx_shared *sh = priv->sh;
-	char s[MLX5_HLIST_NAMESIZE];
+	char s[MLX5_HLIST_NAMESIZE] __rte_unused;
 	int err;
 
 	MLX5_ASSERT(sh && sh->refcnt);
@@ -233,7 +233,9 @@
 		return 0;
 	err = mlx5_alloc_table_hash_list(priv);
 	if (err)
-		return err;
+		goto error;
+	/* The resources below are only valid with DV support. */
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
 	/* Create tags hash list table. */
 	snprintf(s, sizeof(s), "%s_tags", sh->ibdev_name);
 	sh->tag_table = mlx5_hlist_create(s, MLX5_TAGS_HLIST_ARRAY_SIZE, 0,
@@ -260,6 +262,7 @@
 		err = ENOMEM;
 		goto error;
 	}
+#endif
 #ifdef HAVE_MLX5DV_DR
 	void *domain;
 
-- 
1.8.3.1