netfilter: nft_objref: support for stateful object maps

This patch allows us to refer to stateful object dictionaries, the
source register indicates the key data to be used to look up for the
corresponding state object. We can refer to these maps through names or,
alternatively, the map transaction id. This allows us to refer to both
anonymous and named maps.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso
2016-11-28 00:06:03 +01:00
parent 8aeff920dc
commit 63aea29060
3 changed files with 125 additions and 1 deletions

View File

@@ -1153,11 +1153,17 @@ enum nft_fwd_attributes {
*
* @NFTA_OBJREF_IMM_TYPE: object type for immediate reference (NLA_U32: nft_register)
* @NFTA_OBJREF_IMM_NAME: object name for immediate reference (NLA_STRING)
* @NFTA_OBJREF_SET_SREG: source register of the data to look for (NLA_U32: nft_registers)
* @NFTA_OBJREF_SET_NAME: name of the set where to look for (NLA_STRING)
* @NFTA_OBJREF_SET_ID: id of the set where to look for in this transaction (NLA_U32)
*/
enum nft_objref_attributes {
NFTA_OBJREF_UNSPEC,
NFTA_OBJREF_IMM_TYPE,
NFTA_OBJREF_IMM_NAME,
NFTA_OBJREF_SET_SREG,
NFTA_OBJREF_SET_NAME,
NFTA_OBJREF_SET_ID,
__NFTA_OBJREF_MAX
};
#define NFTA_OBJREF_MAX (__NFTA_OBJREF_MAX - 1)