[dpdk-dev] [PATCH] net/mlx5: fix flow tag hash list conversion

[dpdk-dev] [PATCH] net/mlx5: fix flow tag hash list conversion

[Matan Azrad]

When DR is not supported and DV is supported, tag action still can be
used by the metadata feature.

Wrongly, the tag hash list was not created what caused failure in
metadata action creation.

Create the tag hash list for each DV case.

Fixes: 860897d2895a ("net/mlx5: reorganize flow tables with hash list")

Signed-off-by: Matan Azrad <matan@mellanox.com>
---
 drivers/net/mlx5/mlx5.c | 41 +++++++++++++++++++++++------------------
 1 file changed, 23 insertions(+), 18 deletions(-)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 3ca91b2..59ae408 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -866,13 +866,21 @@ struct mlx5_flow_id_pool *
 static int
 mlx5_alloc_shared_dr(struct mlx5_priv *priv)
 {
+	struct mlx5_ibv_shared *sh = priv->sh;
+	char s[MLX5_HLIST_NAMESIZE];
 	int err = mlx5_alloc_table_hash_list(priv);
 
 	if (err)
 		return err;
+	/* 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);
+	if (!sh->tag_table) {
+		DRV_LOG(ERR, "tags with hash creation failed.\n");
+		err = ENOMEM;
+		goto error;
+	}
 #ifdef HAVE_MLX5DV_DR
-	struct mlx5_ibv_shared *sh = priv->sh;
-	char s[MLX5_HLIST_NAMESIZE];
 	void *domain;
 
 	if (sh->dv_refcnt) {
@@ -912,20 +920,13 @@ struct mlx5_flow_id_pool *
 		sh->esw_drop_action = mlx5_glue->dr_create_flow_action_drop();
 	}
 #endif
-	/* create tags hash list table. */
-	snprintf(s, sizeof(s), "%s_tags", priv->sh->ibdev_name);
-	sh->tag_table = mlx5_hlist_create(s, MLX5_TAGS_HLIST_ARRAY_SIZE);
-	if (!sh->flow_tbls) {
-		DRV_LOG(ERR, "tags with hash creation failed.\n");
-		goto error;
-	}
 	sh->pop_vlan_action = mlx5_glue->dr_create_flow_action_pop_vlan();
+#endif /* HAVE_MLX5DV_DR */
 	sh->dv_refcnt++;
 	priv->dr_shared = 1;
 	return 0;
-
 error:
-       /* Rollback the created objects. */
+	/* Rollback the created objects. */
 	if (sh->rx_domain) {
 		mlx5_glue->dr_destroy_domain(sh->rx_domain);
 		sh->rx_domain = NULL;
@@ -946,8 +947,12 @@ struct mlx5_flow_id_pool *
 		mlx5_glue->destroy_flow_action(sh->pop_vlan_action);
 		sh->pop_vlan_action = NULL;
 	}
+	if (sh->tag_table) {
+		/* tags should be destroyed with flow before. */
+		mlx5_hlist_destroy(sh->tag_table, NULL, NULL);
+		sh->tag_table = NULL;
+	}
 	mlx5_free_table_hash_list(priv);
-#endif
 	return err;
 }
 
@@ -960,7 +965,6 @@ struct mlx5_flow_id_pool *
 static void
 mlx5_free_shared_dr(struct mlx5_priv *priv)
 {
-#ifdef HAVE_MLX5DV_DR
 	struct mlx5_ibv_shared *sh;
 
 	if (!priv->dr_shared)
@@ -968,6 +972,7 @@ struct mlx5_flow_id_pool *
 	priv->dr_shared = 0;
 	sh = priv->sh;
 	assert(sh);
+#ifdef HAVE_MLX5DV_DR
 	assert(sh->dv_refcnt);
 	if (sh->dv_refcnt && --sh->dv_refcnt)
 		return;
@@ -989,17 +994,17 @@ struct mlx5_flow_id_pool *
 		sh->esw_drop_action = NULL;
 	}
 #endif
-	if (sh->tag_table) {
-		/* tags should be destroyed with flow before. */
-		mlx5_hlist_destroy(sh->tag_table, NULL, NULL);
-		sh->tag_table = NULL;
-	}
 	if (sh->pop_vlan_action) {
 		mlx5_glue->destroy_flow_action(sh->pop_vlan_action);
 		sh->pop_vlan_action = NULL;
 	}
 	pthread_mutex_destroy(&sh->dv_mutex);
 #endif /* HAVE_MLX5DV_DR */
+	if (sh->tag_table) {
+		/* tags should be destroyed with flow before. */
+		mlx5_hlist_destroy(sh->tag_table, NULL, NULL);
+		sh->tag_table = NULL;
+	}
 	mlx5_free_table_hash_list(priv);
 }
 
-- 
1.8.3.1

Re: [dpdk-dev] [PATCH] net/mlx5: fix flow tag hash list conversion

[Raslan Darawsheh]

Hi,
> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Matan Azrad
> Sent: Thursday, November 21, 2019 1:28 PM
> To: dev@dpdk.org
> Cc: Slava Ovsiienko <viacheslavo@mellanox.com>
> Subject: [dpdk-dev] [PATCH] net/mlx5: fix flow tag hash list conversion
> 
> When DR is not supported and DV is supported, tag action still can be
> used by the metadata feature.
> 
> Wrongly, the tag hash list was not created what caused failure in
> metadata action creation.
> 
> Create the tag hash list for each DV case.
> 
> Fixes: 860897d2895a ("net/mlx5: reorganize flow tables with hash list")
> 
> Signed-off-by: Matan Azrad <matan@mellanox.com>
> ---

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh