diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2013-10-10 13:26:33 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2013-10-14 18:00:57 +0200 |
| commit | 9ddf63235749a9efa1fad2eeb74be2ee9b580f8d (patch) | |
| tree | 2606a4fffe7739aa342682f48bd9817bafeeb4ce /include | |
| parent | c54032e05bfcbb261f47aaadf8476e864e8712f4 (diff) | |
netfilter: nf_tables: add support for dormant tables
This patch allows you to temporarily disable an entire table.
You can change the state of a dormant table via NFT_MSG_NEWTABLE
messages. Using this operation you can wake up a table, so their
chains are registered.
This provides atomicity at chain level. Thus, the rule-set of one
chain is applied at once, avoiding any possible intermediate state
in every chain. Still, the chains that belongs to a table are
registered consecutively. This also allows you to have inactive
tables in the kernel.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/netfilter/nf_tables.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h index 1563875e694..a9c4bce1988 100644 --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -97,13 +97,24 @@ enum nft_hook_attributes { #define NFTA_HOOK_MAX (__NFTA_HOOK_MAX - 1) /** + * enum nft_table_flags - nf_tables table flags + * + * @NFT_TABLE_F_DORMANT: this table is not active + */ +enum nft_table_flags { + NFT_TABLE_F_DORMANT = 0x1, +}; + +/** * enum nft_table_attributes - nf_tables table netlink attributes * * @NFTA_TABLE_NAME: name of the table (NLA_STRING) + * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32) */ enum nft_table_attributes { NFTA_TABLE_UNSPEC, NFTA_TABLE_NAME, + NFTA_TABLE_FLAGS, __NFTA_TABLE_MAX }; #define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1) |