neighbour: Do not perturb drop profiles when neigh_probe

Yang Wei · davem330 · commit 87fff3cacd01 · 2019-01-17T22:08:14.000-08:00
Replace the kfree_skb() by consume_skb() to be drop monitor(dropwatch,
perf) friendly.

Signed-off-by: Yang Wei &lt;yang.wei9@zte.com.cn&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
@@ -1007,7 +1007,7 @@ static void neigh_probe(struct neighbour *neigh)
 	if (neigh->ops->solicit)
 		neigh->ops->solicit(neigh, skb);
 	atomic_inc(&neigh->probes);
-	kfree_skb(skb);
+	consume_skb(skb);
 }
 
 /* Called when a timer expires for a neighbour entry. */

Original file line number	Diff line number	Diff line change
`@@ -1007,7 +1007,7 @@ static void neigh_probe(struct neighbour *neigh)`
`1007`	`1007`	`if (neigh->ops->solicit)`
`1008`	`1008`	`neigh->ops->solicit(neigh, skb);`
`1009`	`1009`	`atomic_inc(&neigh->probes);`
`1010`		`- kfree_skb(skb);`
	`1010`	`+ consume_skb(skb);`
`1011`	`1011`	`}`
`1012`	`1012`
`1013`	`1013`	`/* Called when a timer expires for a neighbour entry. */`