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netfilter: nf_tables: add register parsing/dumping helpers

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Add helper functions to parse and dump register values in netlink attributes.
These helpers will later be changed to take care of translation between the
old 128 bit and the new 32 bit register numbers.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Patrick McHardy
2015-04-11 02:27:36 +01:00
committed by Pablo Neira Ayuso
parent 8cd8937ac0
commit b1c96ed37c
15 changed files with 68 additions and 53 deletions
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3
include/net/netfilter/nf_tables.h
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@@ -128,6 +128,9 @@ static inline enum nft_registers nft_type_to_reg(enum nft_data_types type)
return type == NFT_DATA_VERDICT ? NFT_REG_VERDICT : NFT_REG_1;
}
unsigned int nft_parse_register(const struct nlattr *attr);
int nft_dump_register(struct sk_buff *skb, unsigned int attr, unsigned int reg);
int nft_validate_register_load(enum nft_registers reg, unsigned int len);
int nft_validate_register_store(const struct nft_ctx *ctx,
enum nft_registers reg,