Add missing includes in header files

[elogind.git] / src / libsystemd / sd-bus / bus-bloom.h

diff --git a/src/libsystemd/sd-bus/bus-bloom.h b/src/libsystemd/sd-bus/bus-bloom.h
index 422eb4e01af5fd278c322d141f17ea33e5ae7120..96c82d7e8fc3e944399cac31e9cc8bd1583f2e0a 100644 (file)
--- a/src/libsystemd/sd-bus/bus-bloom.h
+++ b/src/libsystemd/sd-bus/bus-bloom.h
@@ -21,9 +21,25 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stdbool.h>
+#include <stdint.h>
 #include <sys/types.h>
 
-#define BLOOM_SIZE 64
+/*
+ * Our default bloom filter has the following parameters:
+ *
+ * m=512   (bits in the filter)
+ * k=8     (hash functions)
+ *
+ * We use SipHash24 as hash function with a number of (originally
+ * randomized) but fixed hash keys.
+ *
+ */
 
-void bloom_add_pair(uint64_t filter[BLOOM_SIZE/8], const char *a, const char *b);
-void bloom_add_prefixes(uint64_t filter[BLOOM_SIZE/8], const char *a, const char *b, char sep);
+#define DEFAULT_BLOOM_SIZE (512/8) /* m: filter size */
+#define DEFAULT_BLOOM_N_HASH 8     /* k: number of hash functions */
+
+void bloom_add_pair(uint64_t filter[], size_t size, unsigned n_hash, const char *a, const char *b);
+void bloom_add_prefixes(uint64_t filter[], size_t size, unsigned n_hash, const char *a, const char *b, char sep);
+
+bool bloom_validate_parameters(size_t size, unsigned n_hash);