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authorPatrick McHardy2015-04-11 10:46:38 +0100
committerPablo Neira Ayuso2015-04-13 20:12:31 +0200
commit0b2d8a7b638b5034d2d68f6add8af94daaa1d4cd (patch)
tree0e10c271d522dd144f22e474af5f73a7c4214091 /include/net
parent24477e57412a7a7dea62637ac990bc5c1cff0665 (diff)
netfilter: nf_tables: add helper functions for expression handling
Add helper functions for initializing, cloning, dumping and destroying a single expression that is not part of a rule. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/netfilter/nf_tables.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index cb42da1011ef..e21623cb7b20 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -1,6 +1,7 @@
#ifndef _NET_NF_TABLES_H
#define _NET_NF_TABLES_H
+#include <linux/module.h>
#include <linux/list.h>
#include <linux/netfilter.h>
#include <linux/netfilter/nfnetlink.h>
@@ -641,6 +642,18 @@ static inline void *nft_expr_priv(const struct nft_expr *expr)
return (void *)expr->data;
}
+struct nft_expr *nft_expr_init(const struct nft_ctx *ctx,
+ const struct nlattr *nla);
+void nft_expr_destroy(const struct nft_ctx *ctx, struct nft_expr *expr);
+int nft_expr_dump(struct sk_buff *skb, unsigned int attr,
+ const struct nft_expr *expr);
+
+static inline void nft_expr_clone(struct nft_expr *dst, struct nft_expr *src)
+{
+ __module_get(src->ops->type->owner);
+ memcpy(dst, src, src->ops->size);
+}
+
/**
* struct nft_rule - nf_tables rule
*