[PATCH 22.11 v2 6/7] net/nfp: fix device resource freeing

[Chaoyong He]

[ upstream commit 09309f87358b3a538af47e31340898a15bb34d85 ]

Set the representor array to NULL to avoid that close interface
does not free some resource.

Representor array points to dev_private which is already freed by
'rte_eth_dev_release_port()', and 'nfp_flower_repr_dev_close()' requires
pointers to be NULL to proceed freeing other resources.

Fixes: 7c596721ae5f ("net/nfp: fix resource leak for flower firmware")

Signed-off-by: Chaoyong He <chaoyong.he at corigine.com>
---
 drivers/net/nfp/flower/nfp_flower_representor.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/net/nfp/flower/nfp_flower_representor.c b/drivers/net/nfp/flower/nfp_flower_representor.c
index ac092c2..4b8b023 100644
--- a/drivers/net/nfp/flower/nfp_flower_representor.c
+++ b/drivers/net/nfp/flower/nfp_flower_representor.c
@@ -527,17 +527,30 @@ nfp_flower_repr_tx_burst(void *tx_queue,
 static int
 nfp_flower_repr_uninit(struct rte_eth_dev *eth_dev)
 {
+	uint16_t index;
 	struct nfp_flower_representor *repr;
 
 	repr = eth_dev->data->dev_private;
 	rte_ring_free(repr->ring);
 
+	if (repr->repr_type == NFP_REPR_TYPE_PHYS_PORT) {
+		index = NFP_FLOWER_CMSG_PORT_PHYS_PORT_NUM(repr->port_id);
+		repr->app_fw_flower->phy_reprs[index] = NULL;
+	} else {
+		index = repr->vf_id;
+		repr->app_fw_flower->vf_reprs[index] = NULL;
+	}
+
 	return 0;
 }
 
 static int
-nfp_flower_pf_repr_uninit(__rte_unused struct rte_eth_dev *eth_dev)
+nfp_flower_pf_repr_uninit(struct rte_eth_dev *eth_dev)
 {
+	struct nfp_flower_representor *repr = eth_dev->data->dev_private;
+
+	repr->app_fw_flower->pf_repr = NULL;
+
 	return 0;
 }
 
-- 
2.39.1