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Diffstat (limited to 'include/net/netfilter/nf_tables.h')
-rw-r--r--include/net/netfilter/nf_tables.h16
1 files changed, 14 insertions, 2 deletions
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index c9149cc0a02d..4bd7508bedc9 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -618,6 +618,8 @@ struct nft_expr_ops {
void (*eval)(const struct nft_expr *expr,
struct nft_regs *regs,
const struct nft_pktinfo *pkt);
+ int (*clone)(struct nft_expr *dst,
+ const struct nft_expr *src);
unsigned int size;
int (*init)(const struct nft_ctx *ctx,
@@ -660,10 +662,20 @@ 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)
+static inline int nft_expr_clone(struct nft_expr *dst, struct nft_expr *src)
{
+ int err;
+
__module_get(src->ops->type->owner);
- memcpy(dst, src, src->ops->size);
+ if (src->ops->clone) {
+ dst->ops = src->ops;
+ err = src->ops->clone(dst, src);
+ if (err < 0)
+ return err;
+ } else {
+ memcpy(dst, src, src->ops->size);
+ }
+ return 0;
}
/**

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