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netfilter: ipset: Support extensions which need a per data destroy function

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Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
This commit is contained in:
Jozsef Kadlecsik 2013-09-09 14:44:29 +02:00
parent 03c8b234e6
commit 40cd63bf33
4 changed files with 107 additions and 43 deletions
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22
include/linux/netfilter/ipset/ip_set.h
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@ -49,11 +49,13 @@ enum ip_set_feature {
/* Set extensions */
enum ip_set_extension {
IPSET_EXT_NONE = 0,
IPSET_EXT_BIT_TIMEOUT = 1,
IPSET_EXT_BIT_TIMEOUT = 0,
IPSET_EXT_TIMEOUT = (1 << IPSET_EXT_BIT_TIMEOUT),
IPSET_EXT_BIT_COUNTER = 2,
IPSET_EXT_BIT_COUNTER = 1,
IPSET_EXT_COUNTER = (1 << IPSET_EXT_BIT_COUNTER),
/* Mark set with an extension which needs to call destroy */
IPSET_EXT_BIT_DESTROY = 7,
IPSET_EXT_DESTROY = (1 << IPSET_EXT_BIT_DESTROY),
};
#define SET_WITH_TIMEOUT(s) ((s)->extensions & IPSET_EXT_TIMEOUT)
@ -68,6 +70,8 @@ enum ip_set_ext_id {
/* Extension type */
struct ip_set_ext_type {
/* Destroy extension private data (can be NULL) */
void (*destroy)(void *ext);
enum ip_set_extension type;
enum ipset_cadt_flags flag;
/* Size and minimal alignment */
@ -88,13 +92,21 @@ struct ip_set_counter {
atomic64_t packets;
};
struct ip_set;
static inline void
ip_set_ext_destroy(struct ip_set *set, void *data)
{
/* Check that the extension is enabled for the set and
* call it's destroy function for its extension part in data.
*/
}
#define ext_timeout(e, s) \
(unsigned long *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_TIMEOUT])
#define ext_counter(e, s) \
(struct ip_set_counter *)(((void *)(e)) + (s)->offset[IPSET_EXT_ID_COUNTER])
struct ip_set;
typedef int (*ipset_adtfn)(struct ip_set *set, void *value,
const struct ip_set_ext *ext,
struct ip_set_ext *mext, u32 cmdflags);