net: Fix GRO_HASH_BUCKETS assertion.

davem330 · davem330 · commit ccdb51717ba3 · 2018-07-16T17:02:04.000-07:00
FIELD_SIZEOF() is in bytes, but we want bits. Fixes: d9f37d0 ("net: convert gro_count to bitmask") Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev.c b/net/core/dev.c
@@ -9282,7 +9282,7 @@ static struct hlist_head * __net_init netdev_create_hash(void)
 static int __net_init netdev_init(struct net *net)
 {
 	BUILD_BUG_ON(GRO_HASH_BUCKETS >
-			FIELD_SIZEOF(struct napi_struct, gro_bitmask));
+		     8 * FIELD_SIZEOF(struct napi_struct, gro_bitmask));
 
 	if (net != &init_net)
 		INIT_LIST_HEAD(&net->dev_base_head);

Original file line number	Diff line number	Diff line change
`@@ -9282,7 +9282,7 @@ static struct hlist_head * __net_init netdev_create_hash(void)`
`9282`	`9282`	`static int __net_init netdev_init(struct net *net)`
`9283`	`9283`	`{`
`9284`	`9284`	`BUILD_BUG_ON(GRO_HASH_BUCKETS >`
`9285`		`- FIELD_SIZEOF(struct napi_struct, gro_bitmask));`
	`9285`	`+ 8 * FIELD_SIZEOF(struct napi_struct, gro_bitmask));`
`9286`	`9286`
`9287`	`9287`	`if (net != &init_net)`
`9288`	`9288`	`INIT_LIST_HEAD(&net->dev_base_head);`