1 files changed, 7 insertions, 1 deletions

diff --git a/src/ats/gnunet-service-ats_normalization.h b/src/ats/gnunet-service-ats_normalization.h
index 6e6e4e00b..ab37da796 100644
--- a/src/ats/gnunet-service-ats_normalization.h
+++ b/src/ats/gnunet-service-ats_normalization.h
@@ -33,6 +33,12 @@
 #define DEFAULT_REL_PREFERENCE 1.0
 #define DEFAULT_ABS_PREFERENCE 0.0
 
+
+typedef void
+(*GAS_Normalization_preference_changed_cb) (const struct GNUNET_PeerIdentity *peer,
+                                                                                                                                                                                enum GNUNET_ATS_PreferenceKind kind,
+                                                                                                                                                                                double pref_rel);
+
 /**
  * Get the normalized preference values for a specific peer
  *
@@ -58,7 +64,7 @@ GAS_normalization_change_preference (void *src,
                                          float score_abs);
 
 void
-GAS_normalization_start ();
+GAS_normalization_start (GAS_Normalization_preference_changed_cb pref_ch_cb);
 
 void
 GAS_normalization_stop ();