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Diffstat (limited to 'drivers/net/ppp/ppp_mppe.h')
-rw-r--r--drivers/net/ppp/ppp_mppe.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ppp/ppp_mppe.h b/drivers/net/ppp/ppp_mppe.h
index 7a14e058c668..677b3b3f7425 100644
--- a/drivers/net/ppp/ppp_mppe.h
+++ b/drivers/net/ppp/ppp_mppe.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#define MPPE_PAD 4 /* MPPE growth per frame */
#define MPPE_MAX_KEY_LEN 16 /* largest key length (128-bit) */