[dpdk-dev] [PATCH v3 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.laranje...@6wind.com>
Acked-by: Yongseok Koh <ys...@mellanox.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 7aea5a4..1397016 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