[doc] make sure all SMS related code is part of the 'sms' group
Change-Id: I24c56ccb56d5b39cfb887808f91b715da54c0f8b
diff --git a/include/osmocom/gsm/gsm0411_utils.h b/include/osmocom/gsm/gsm0411_utils.h
index 1c51111..2cd87b8 100644
--- a/include/osmocom/gsm/gsm0411_utils.h
+++ b/include/osmocom/gsm/gsm0411_utils.h
@@ -1,4 +1,6 @@
-/*! \file gsm0411_utils.h */
+/*! \addtogroup sms
+ * @{
+ * \file gsm0411_utils.h */
#pragma once
@@ -35,3 +37,5 @@
/* Prefix msg with a 04.08/04.11 CP header */
int gsm411_push_cp_header(struct msgb *msg, uint8_t proto, uint8_t trans,
uint8_t msg_type);
+
+/*! @} */