[dpdk-dev] [PATCH v2 06/30] 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      |  4 ++++
 drivers/net/mlx5/mlx5.h      |  1 +
 drivers/net/mlx5/mlx5_flow.c | 22 ++++++++++++++++++++++
 3 files changed, 27 insertions(+)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 4da0524..6d17d30 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -190,6 +190,7 @@ mlx5_dev_close(struct rte_eth_dev *dev)
 {
 	struct priv *priv = mlx5_get_priv(dev);
 	unsigned int i;
+	int ret;
 
 	priv_lock(priv);
 	DEBUG("%p: closing device \"%s\"",
@@ -252,6 +253,9 @@ mlx5_dev_close(struct rte_eth_dev *dev)
 	if (priv->reta_idx != NULL)
 		rte_free(priv->reta_idx);
 	priv_socket_uninit(priv);
+	ret = priv_flow_verify(priv);
+	if (ret)
+		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 3c58f7a..c6563bd 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -290,6 +290,7 @@ 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 *);
 
 /* mlx5_socket.c */
 
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 3504c43..193a90b 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -1630,3 +1630,25 @@ 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 flows 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