diff --git a/net/sctp/Makefile b/net/sctp/Makefile
index 6776582ec4490dd41607a4fc4a0e3196ae262208..e845e4588535203373a9693c371b77d0f7575a58 100644
--- a/net/sctp/Makefile
+++ b/net/sctp/Makefile
@@ -15,6 +15,8 @@ sctp-y := sm_statetable.o sm_statefuns.o sm_sideeffect.o \
 	  offload.o stream_sched.o stream_sched_prio.o \
 	  stream_sched_rr.o stream_interleave.o
 
+sctp_diag-y := diag.o
+
 sctp-$(CONFIG_SCTP_DBG_OBJCNT) += objcnt.o
 sctp-$(CONFIG_PROC_FS) += proc.o
 sctp-$(CONFIG_SYSCTL) += sysctl.o
diff --git a/net/sctp/sctp_diag.c b/net/sctp/diag.c
similarity index 92%
rename from net/sctp/sctp_diag.c
rename to net/sctp/diag.c
index a72a7d925d4631e30cfb0743df392ff4cef456ca..078f01a8d582a94d4302b5088f64c6a4f77f6a81 100644
--- a/net/sctp/sctp_diag.c
+++ b/net/sctp/diag.c
@@ -1,3 +1,34 @@
+/* SCTP kernel implementation
+ * (C) Copyright Red Hat Inc. 2017
+ *
+ * This file is part of the SCTP kernel implementation
+ *
+ * These functions implement sctp diag support.
+ *
+ * This SCTP implementation is free software;
+ * you can redistribute it and/or modify it under the terms of
+ * the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This SCTP implementation is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ *                 ************************
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU CC; see the file COPYING.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Please send any bug reports or fixes you make to the
+ * email addresched(es):
+ *    lksctp developers <linux-sctp@vger.kernel.org>
+ *
+ * Written or modified by:
+ *    Xin Long <lucien.xin@gmail.com>
+ */
+
 #include <linux/module.h>
 #include <linux/inet_diag.h>
 #include <linux/sock_diag.h>