netdev - [PATCH net-next 08/10] netfilter: nftables: move nft_expr before nft

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Date:   Sun, 13 Dec 2020 00:05:11 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     netfilter-devel@...r.kernel.org
Cc:     davem@...emloft.net, netdev@...r.kernel.org, kuba@...nel.org
Subject: [PATCH net-next 08/10] netfilter: nftables: move nft_expr before nft_set

Move the nft_expr structure definition before nft_set. Expressions are
used by rules and sets, remove unnecessary forward declarations. This
comes as preparation to support for multiple expressions per set element.

Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
 include/net/netfilter/nf_tables.h | 54 +++++++++++++++----------------
 1 file changed, 26 insertions(+), 28 deletions(-)

diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index aad7e1381200..0f4ae16a0c42 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -305,8 +305,33 @@ struct nft_set_estimate {
 	enum nft_set_class	space;
 };
 
+#define NFT_EXPR_MAXATTR		16
+#define NFT_EXPR_SIZE(size)		(sizeof(struct nft_expr) + \
+					 ALIGN(size, __alignof__(struct nft_expr)))
+
+/**
+ *	struct nft_expr - nf_tables expression
+ *
+ *	@ops: expression ops
+ *	@data: expression private data
+ */
+struct nft_expr {
+	const struct nft_expr_ops	*ops;
+	unsigned char			data[]
+		__attribute__((aligned(__alignof__(u64))));
+};
+
+static inline void *nft_expr_priv(const struct nft_expr *expr)
+{
+	return (void *)expr->data;
+}
+
+int nft_expr_clone(struct nft_expr *dst, struct nft_expr *src);
+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);
+
 struct nft_set_ext;
-struct nft_expr;
 
 /**
  *	struct nft_set_ops - nf_tables set operations
@@ -797,7 +822,6 @@ struct nft_offload_ctx;
  *	@validate: validate expression, called during loop detection
  *	@data: extra data to attach to this expression operation
  */
-struct nft_expr;
 struct nft_expr_ops {
 	void				(*eval)(const struct nft_expr *expr,
 						struct nft_regs *regs,
@@ -833,32 +857,6 @@ struct nft_expr_ops {
 	void				*data;
 };
 
-#define NFT_EXPR_MAXATTR		16
-#define NFT_EXPR_SIZE(size)		(sizeof(struct nft_expr) + \
-					 ALIGN(size, __alignof__(struct nft_expr)))
-
-/**
- *	struct nft_expr - nf_tables expression
- *
- *	@ops: expression ops
- *	@data: expression private data
- */
-struct nft_expr {
-	const struct nft_expr_ops	*ops;
-	unsigned char			data[]
-		__attribute__((aligned(__alignof__(u64))));
-};
-
-static inline void *nft_expr_priv(const struct nft_expr *expr)
-{
-	return (void *)expr->data;
-}
-
-int nft_expr_clone(struct nft_expr *dst, struct nft_expr *src);
-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);
-
 /**
  *	struct nft_rule - nf_tables rule
  *
-- 
2.20.1