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netfilter: nftables: move nft_expr before nft_set

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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@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2020-12-07 17:37:05 +01:00
parent 8cfd9b0f85
commit 92b211a289
1 changed files with 26 additions and 28 deletions
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54
include/net/netfilter/nf_tables.h
View file

@ -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
*