netfilter: nf_tables: support variable sized data in nft_data_init()

Add a size argument to nft_data_init() and pass in the available space.
This will be used by the following patches to support variable sized
set element data.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 1f9b848c778c..160577bf0f0a 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -110,7 +110,8 @@ struct nft_data_desc {
         unsigned int                    len;
 };
 
-int nft_data_init(const struct nft_ctx *ctx, struct nft_data *data,
+int nft_data_init(const struct nft_ctx *ctx,
+                  struct nft_data *data, unsigned int size,
                   struct nft_data_desc *desc, const struct nlattr *nla);
 void nft_data_uninit(const struct nft_data *data, enum nft_data_types type);
 int nft_data_dump(struct sk_buff *skb, int attr, const struct nft_data *data,