1 files changed, 43 insertions, 0 deletions
diff --git a/net/mac80211/aes_gcm.h b/net/mac80211/aes_gcm.h
new file mode 100644
index 000000000..b14093b2f
--- /dev/null
+++ b/net/mac80211/aes_gcm.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2014-2015, Qualcomm Atheros, Inc.
+ */
+
+#ifndef AES_GCM_H
+#define AES_GCM_H
+
+#include "aead_api.h"
+
+#define GCM_AAD_LEN	32
+
+static inline int ieee80211_aes_gcm_encrypt(struct crypto_aead *tfm,
+					    u8 *j_0, u8 *aad,  u8 *data,
+					    size_t data_len, u8 *mic)
+{
+	return aead_encrypt(tfm, j_0, aad + 2,
+			    be16_to_cpup((__be16 *)aad),
+			    data, data_len, mic);
+}
+
+static inline int ieee80211_aes_gcm_decrypt(struct crypto_aead *tfm,
+					    u8 *j_0, u8 *aad, u8 *data,
+					    size_t data_len, u8 *mic)
+{
+	return aead_decrypt(tfm, j_0, aad + 2,
+			    be16_to_cpup((__be16 *)aad),
+			    data, data_len, mic);
+}
+
+static inline struct crypto_aead *
+ieee80211_aes_gcm_key_setup_encrypt(const u8 key[], size_t key_len)
+{
+	return aead_key_setup_encrypt("gcm(aes)", key,
+				      key_len, IEEE80211_GCMP_MIC_LEN);
+}
+
+static inline void ieee80211_aes_gcm_key_free(struct crypto_aead *tfm)
+{
+	return aead_key_free(tfm);
+}
+
+#endif /* AES_GCM_H */