[PATCH] graph: fix xstats of cloned nodes

[Andrey Yudin]

When cloning a node with xstats enabled, xstat_desc entries are copied
into the rte_node_register structure, but the nb_xstats field is not.

As a result, the cloned node reports zero available xstats,
making xstats unusable.

Copy the nb_xstats field when cloning the node so that cloned nodes
preserve the xstats configuration of the original node.

Fixes: 070db97e017b ("graph: support node xstats")
Cc: stable at dpdk.org
Signed-off-by: Andrey Yudin <Andrey.Yudin at infotecs.ru>
---
 lib/graph/node.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/graph/node.c b/lib/graph/node.c
index 1fce3e6632..bb39c616de 100644
--- a/lib/graph/node.c
+++ b/lib/graph/node.c
@@ -208,6 +208,7 @@ node_clone(struct node *node, const char *name)
 			goto free;
 		}
 
+		reg->xstats->nb_xstats = node->xstats->nb_xstats;
 		for (i = 0; i < node->xstats->nb_xstats; i++)
 			if (rte_strscpy(reg->xstats->xstat_desc[i], node->xstats->xstat_desc[i],
 					RTE_NODE_XSTAT_DESC_SIZE) < 0)
-- 
2.47.3