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netfilter: nftables: add helper function to validate set element data

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[ Upstream commit 97c976d662 ]

When binding sets to rule, validate set element data according to
set definition. This patch adds a helper function to be reused by
the catch-all set element support.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Stable-dep-of: 0a771f7b266b ("netfilter: nf_tables: skip immediate deactivate in _PREPARE_ERROR")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Pablo Neira Ayuso
2021-04-27 18:05:48 +02:00
committed by Greg Kroah-Hartman
parent 893cb3c351
commit 7782ce022f
1 changed files with 11 additions and 4 deletions
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15
net/netfilter/nf_tables_api.c
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@@ -4576,10 +4576,9 @@ static int nft_validate_register_store(const struct nft_ctx *ctx,
enum nft_data_types type,
unsigned int len);
static int nf_tables_bind_check_setelem(const struct nft_ctx *ctx,
struct nft_set *set,
const struct nft_set_iter *iter,
struct nft_set_elem *elem)
static int nft_setelem_data_validate(const struct nft_ctx *ctx,
struct nft_set *set,
struct nft_set_elem *elem)
{
const struct nft_set_ext *ext = nft_set_elem_ext(set, elem->priv);
enum nft_registers dreg;
@@ -4591,6 +4590,14 @@ static int nf_tables_bind_check_setelem(const struct nft_ctx *ctx,
set->dlen);
}
static int nf_tables_bind_check_setelem(const struct nft_ctx *ctx,
struct nft_set *set,
const struct nft_set_iter *iter,
struct nft_set_elem *elem)
{
return nft_setelem_data_validate(ctx, set, elem);
}
int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set,
struct nft_set_binding *binding)
{