From 9ef5f68d4bccb880646f7ccf4b5380cd5da0068a Mon Sep 17 00:00:00 2001
From: Andrew Zaborowski <andrew.zaborowski@intel.com>
Date: Fri, 22 Sep 2017 05:06:23 +0200
Subject: [PATCH] util: Add address type utils

---
 src/util.c | 16 ++++++++++++++++
 src/util.h |  2 ++
 2 files changed, 18 insertions(+)

diff --git a/src/util.c b/src/util.c
index d56a2592..9299ed7d 100644
--- a/src/util.c
+++ b/src/util.c
@@ -131,3 +131,19 @@ bool util_string_to_address(const char *str, uint8_t *addr)
 
 	return true;
 }
+
+bool util_is_group_address(const uint8_t *addr)
+{
+	/* 802.11-2016 section 9.2.2 */
+	return util_is_bit_set(addr[0], 0);
+}
+
+bool util_is_broadcast_address(const uint8_t *addr)
+{
+	/* 802.11-2016 section 9.2.4.3 */
+	static const uint8_t bcast_addr[6] = {
+		0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	};
+
+	return !memcmp(addr, bcast_addr, 6);
+}
diff --git a/src/util.h b/src/util.h
index 8b45145a..2747538d 100644
--- a/src/util.h
+++ b/src/util.h
@@ -36,6 +36,8 @@ const char *util_ssid_to_utf8(size_t len, const uint8_t *ssid);
 bool util_ssid_is_utf8(size_t len, const uint8_t *ssid);
 const char *util_address_to_string(const uint8_t *addr);
 bool util_string_to_address(const char *str, uint8_t *addr);
+bool util_is_group_address(const uint8_t *addr);
+bool util_is_broadcast_address(const uint8_t *addr);
 
 static inline uint8_t util_bit_field(const uint8_t oct, int start, int num)
 {