[dpdk-dev] [PATCH v1 06/21] net/mlx5: verify all flows are been removed on close

[Nelio Laranjeiro]

Debug tools to verify all flows are be un-register from the NIC.

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
---
 drivers/net/mlx5/mlx5.c      |  3 +++
 drivers/net/mlx5/mlx5.h      |  1 +
 drivers/net/mlx5/mlx5_flow.c | 22 ++++++++++++++++++++++
 3 files changed, 26 insertions(+)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index c7bc65f..0d8ca52 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -200,6 +200,9 @@ mlx5_dev_close(struct rte_eth_dev *dev)
 	}
 	if (priv->reta_idx != NULL)
 		rte_free(priv->reta_idx);
+	i = priv_flow_verify(priv);
+	if (i)
+		WARN("%p: some flows still remain", (void*)priv);
 	priv_unlock(priv);
 	memset(priv, 0, sizeof(*priv));
 }
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 40c3475..a5e9aa1 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -287,5 +287,6 @@ int mlx5_flow_isolate(struct rte_eth_dev *, int, struct rte_flow_error *);
 int priv_flow_start(struct priv *);
 void priv_flow_stop(struct priv *);
 int priv_flow_rxq_in_use(struct priv *, struct mlx5_rxq_data *);
+int priv_flow_verify(struct priv *);
 
 #endif /* RTE_PMD_MLX5_H_ */
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 996fe31..bcbb984 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -1639,3 +1639,25 @@ mlx5_flow_isolate(struct rte_eth_dev *dev,
 	priv_unlock(priv);
 	return 0;
 }
+
+/**
+ * Verify the flow list is empty
+ *
+ * @param priv
+ *  Pointer to private structure.
+ *
+ * @return the number of object not released.
+ */
+int
+priv_flow_verify(struct priv *priv)
+{
+	struct rte_flow *flow;
+	int ret = 0;
+
+	TAILQ_FOREACH(flow, &priv->flows, next) {
+		DEBUG("%p: flow %p still referenced", (void*)priv,
+		      (void*)flow);
+		++ret;
+	}
+	return ret;
+}
-- 
2.1.4