1 files changed, 92 insertions, 0 deletions
diff --git a/include/cache.h b/include/cache.h
new file mode 100644
index 0000000..7d9559a
--- /dev/null
+++ b/include/cache.h
@@ -0,0 +1,92 @@
+#ifndef _CACHE_H_
+#define _CACHE_H_
+
+#include <sys/types.h>
+#include <time.h>
+
+/* cache features */
+enum {
+	NO_FEATURES = 0,
+
+	TIMER_FEATURE = 0,
+	TIMER = (1 << TIMER_FEATURE),
+
+	LIFETIME_FEATURE = 2,
+	LIFETIME = (1 << LIFETIME_FEATURE),
+
+	__CACHE_MAX_FEATURE
+};
+#define CACHE_MAX_FEATURE __CACHE_MAX_FEATURE
+
+struct cache;
+struct us_conntrack;
+
+struct cache_feature {
+	size_t size;
+	void (*add)(struct us_conntrack *u, void *data);
+	void (*update)(struct us_conntrack *u, void *data);
+	void (*destroy)(struct us_conntrack *u, void *data);
+	int  (*dump)(struct us_conntrack *u, void *data, char *buf, int type);
+};
+
+extern struct cache_feature lifetime_feature;
+extern struct cache_feature timer_feature;
+
+#define CACHE_MAX_NAMELEN 32
+
+struct cache {
+	char name[CACHE_MAX_NAMELEN];
+	struct hashtable *h;
+
+	unsigned int num_features;
+	struct cache_feature **features;
+	unsigned int feature_type[CACHE_MAX_FEATURE];
+	unsigned int *feature_offset;
+	struct cache_extra *extra;
+	unsigned int extra_offset;
+
+        /* statistics */
+	unsigned int add_ok;
+	unsigned int del_ok;
+	unsigned int upd_ok;
+
+	unsigned int add_fail;
+	unsigned int del_fail;
+	unsigned int upd_fail;
+
+	unsigned int commit_ok;
+	unsigned int commit_exist;
+	unsigned int commit_fail;
+
+	unsigned int flush;
+};
+
+struct cache_extra {
+	unsigned int size;
+
+	void (*add)(struct us_conntrack *u, void *data);
+	void (*update)(struct us_conntrack *u, void *data);
+	void (*destroy)(struct us_conntrack *u, void *data);
+};
+
+struct nf_conntrack;
+
+struct cache *cache_create(char *name, unsigned int features, u_int8_t proto, struct cache_extra *extra);
+void cache_destroy(struct cache *e);
+
+struct us_conntrack *cache_add(struct cache *c, struct nf_conntrack *ct);
+struct us_conntrack *cache_update(struct cache *c, struct nf_conntrack *ct);
+struct us_conntrack *cache_update_force(struct cache *c, struct nf_conntrack *ct);
+int cache_del(struct cache *c, struct nf_conntrack *ct);
+int cache_test(struct cache *c, struct nf_conntrack *ct);
+void cache_stats(struct cache *c, int fd);
+struct us_conntrack *cache_get_conntrack(struct cache *, void *);
+void *cache_get_extra(struct cache *, void *);
+
+/* iterators */
+void cache_dump(struct cache *c, int fd, int type);
+void cache_commit(struct cache *c);
+void cache_flush(struct cache *c);
+void cache_bulk(struct cache *c);
+
+#endif