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-rw-r--r--include/net/inet_ecn.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/inet_ecn.h b/include/net/inet_ecn.h
index f5ff16d72fe6..482a1b705362 100644
--- a/include/net/inet_ecn.h
+++ b/include/net/inet_ecn.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _INET_ECN_H_
#define _INET_ECN_H_