conntrackd: add iterators with limited steps in hash and cache types

This patch adds cache_iterate_limit() and hashtable_iterate_limit()
that allows to limit the iteration to given a number of states.

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

2 files changed, 3 insertions, 1 deletions

diff --git a/include/cache.h b/include/cache.h
index 0b2b18d..109e6aa 100644
--- a/include/cache.h
+++ b/include/cache.h
@@ -114,6 +114,7 @@ void cache_stats_extended(const struct cache *c, int fd);
 struct cache_object *cache_data_get_object(struct cache *c, void *data);
 void *cache_get_extra(struct cache *, void *);
 void cache_iterate(struct cache *c, void *data, int (*iterate)(void *data1, void *data2));
+void cache_iterate_limit(struct cache *c, void *data, uint32_t from, uint32_t steps, int (*iterate)(void *data1, void *data2));
 
 /* iterators */
 struct nfct_handle;
diff --git a/include/hash.h b/include/hash.h
index 68d618b..eaa9e96 100644
--- a/include/hash.h
+++ b/include/hash.h
@@ -37,7 +37,8 @@ int hashtable_add(struct hashtable *table, struct hashtable_node *n, int id);
 void hashtable_del(struct hashtable *table, struct hashtable_node *node);
 int hashtable_flush(struct hashtable *table);
 int hashtable_iterate(struct hashtable *table, void *data,
-		      int (*iterate)(void *data, struct hashtable_node *n));
+		      int (*iterate)(void *data, void *n));
+int hashtable_iterate_limit(struct hashtable *table, void *data, uint32_t from, uint32_t steps, int (*iterate)(void *data1, void *n));
 unsigned int hashtable_counter(const struct hashtable *table);
 
 #endif