util: Move mem_is_zero to util

src/eapol.c

@@ -167,22 +167,11 @@ void eapol_pae_close()
 	l_io_destroy(pae_io);
 }
 
-static inline bool mem_is_zero(const uint8_t *field, size_t size)
-{
-	size_t i;
-
-	for (i = 0; i < size; i++)
-		if (field[i] != 0)
-			return false;
-
-	return true;
-}
-
-#define VERIFY_IS_ZERO(field)					\
-	do {							\
-		if (!mem_is_zero((field), sizeof((field))))	\
-			return false;				\
-	} while (false)						\
+#define VERIFY_IS_ZERO(field)						\
+	do {								\
+		if (!util_mem_is_zero((field), sizeof((field))))	\
+			return false;					\
+	} while (false)							\
 
 /*
  * MIC calculation depends on the selected hash function.  The has function
@@ -483,7 +472,7 @@ bool eapol_verify_ptk_3_of_4(const struct eapol_key *ek, bool is_wpa)
 	/* 0 (Version 2) or random (Version 1) */
 	if (ek->key_descriptor_version ==
 			EAPOL_KEY_DESCRIPTOR_VERSION_HMAC_SHA1_AES)
-		L_WARN_ON(!mem_is_zero(ek->eapol_key_iv,
+		L_WARN_ON(!util_mem_is_zero(ek->eapol_key_iv,
 						sizeof(ek->eapol_key_iv)));
 
 	return true;

src/util.h

@@ -45,4 +45,15 @@ static inline bool util_is_bit_set(const uint8_t oct, int bit)
 	return oct & mask ? true : false;
 }
 
+static inline bool util_mem_is_zero(const uint8_t *field, size_t size)
+{
+	size_t i;
+
+	for (i = 0; i < size; i++)
+		if (field[i] != 0)
+			return false;
+
+	return true;
+}
+
 #endif /* __UTIL_H */