include/net/netfilter/nft_meta.h

Source file repositories/reference/linux-study-clean/include/net/netfilter/nft_meta.h

File Facts

System
Linux kernel
Corpus path
include/net/netfilter/nft_meta.h
Extension
.h
Size
1332 bytes
Lines
52
Domain
Networking Core
Bucket
Sockets, Protocols, Packet Path, And Network Policy
Inferred role
Networking Core: implementation source
Status
source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

Dependency Surface

Detected Declarations

Annotated Snippet

struct nft_meta {
	enum nft_meta_keys	key:8;
	u8			len;
	union {
		u8		dreg;
		u8		sreg;
	};
};

extern const struct nla_policy nft_meta_policy[];

int nft_meta_get_init(const struct nft_ctx *ctx,
		      const struct nft_expr *expr,
		      const struct nlattr * const tb[]);

int nft_meta_set_init(const struct nft_ctx *ctx,
		      const struct nft_expr *expr,
		      const struct nlattr * const tb[]);

int nft_meta_get_dump(struct sk_buff *skb,
		      const struct nft_expr *expr, bool reset);

int nft_meta_set_dump(struct sk_buff *skb,
		      const struct nft_expr *expr, bool reset);

void nft_meta_get_eval(const struct nft_expr *expr,
		       struct nft_regs *regs,
		       const struct nft_pktinfo *pkt);

void nft_meta_set_eval(const struct nft_expr *expr,
		       struct nft_regs *regs,
		       const struct nft_pktinfo *pkt);

void nft_meta_set_destroy(const struct nft_ctx *ctx,
			  const struct nft_expr *expr);

int nft_meta_set_validate(const struct nft_ctx *ctx,
			  const struct nft_expr *expr);

struct nft_inner_tun_ctx;
void nft_meta_inner_eval(const struct nft_expr *expr,
			 struct nft_regs *regs, const struct nft_pktinfo *pkt,
			 struct nft_inner_tun_ctx *tun_ctx);

#endif

Annotation

Implementation Notes