cache: do not populate cache if it is going to be flushed

Skip set element netlink dump if set is flushed, this speeds up
set flush + add element operation in a batch file for an existing set.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 15 insertions, 1 deletions

diff --git a/include/cache.h b/include/cache.h
index 7d61701a..cdf1f4fb 100644
--- a/include/cache.h
+++ b/include/cache.h
@@ -38,11 +38,24 @@ enum cache_level_flags {
 	NFT_CACHE_FLUSHED	= (1 << 31),
 };
 
+struct nft_filter_obj {
+	struct list_head list;
+	uint32_t	family;
+	const char	*table;
+	const char	*set;
+};
+
+#define NFT_CACHE_HSIZE	8192
+
 struct nft_cache_filter {
 	struct {
 		const char	*table;
 		const char	*set;
 	} list;
+
+	struct {
+		struct list_head head;
+	} obj[NFT_CACHE_HSIZE];
 };
 
 struct nft_cache;
@@ -66,7 +79,8 @@ static inline uint32_t djb_hash(const char *key)
 	return hash;
 }
 
-#define NFT_CACHE_HSIZE 8192
+struct nft_cache_filter *nft_cache_filter_init(void);
+void nft_cache_filter_fini(struct nft_cache_filter *filter);
 
 struct table;
 struct chain;