callback-cred: Document missing callback argument

diff --git a/src/libstrongswan/credentials/sets/callback_cred.h b/src/libstrongswan/credentials/sets/callback_cred.h
index 0cf2730166119f0fa14528591eb499c77b8959d2..adea273b4cf05f21c7ae1af4d849f4851e3e2d63 100644 (file)
--- a/src/libstrongswan/credentials/sets/callback_cred.h
+++ b/src/libstrongswan/credentials/sets/callback_cred.h
@@ -29,6 +29,7 @@ typedef struct callback_cred_t callback_cred_t;
 /**
  * Callback function to get shared keys.
  *
+ * @param data                 data passed to the constructor
  * @param type                 type of requested shared key
  * @param me                   own identity
  * @param other                        other identity