From 46b2cafb25e5241e0bbe0a802ae6b98ea9e6ab14 Mon Sep 17 00:00:00 2001
From: Stefan Berger <stefanb@linux.vnet.ibm.com>
Date: Thu, 30 Aug 2012 14:29:49 -0400
Subject: [PATCH] Implement virMacAddrIsBroadcastRaw

Add function for testing for Ethernet broadcast address
---
 src/libvirt_private.syms | 1 +
 src/util/virmacaddr.c    | 9 +++++++++
 src/util/virmacaddr.h    | 2 ++
 3 files changed, 12 insertions(+)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 27eb43e74b..6f14763e70 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1326,6 +1326,7 @@ virMacAddrCompare;
 virMacAddrFormat;
 virMacAddrGenerate;
 virMacAddrGetRaw;
+virMacAddrIsBroadcastRaw;
 virMacAddrIsMulticast;
 virMacAddrIsUnicast;
 virMacAddrParse;
diff --git a/src/util/virmacaddr.c b/src/util/virmacaddr.c
index e207927112..671ba98d52 100644
--- a/src/util/virmacaddr.c
+++ b/src/util/virmacaddr.c
@@ -30,6 +30,9 @@
 #include "virmacaddr.h"
 #include "virrandom.h"
 
+static const unsigned char virMacAddrBroadcastAddrRaw[VIR_MAC_BUFLEN] =
+    { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+
 /* Compare two MAC addresses, ignoring differences in case,
  * as well as leading zeros.
  */
@@ -218,3 +221,9 @@ virMacAddrIsUnicast(const virMacAddrPtr mac)
 {
     return !(mac->addr[0] & 1);
 }
+
+bool
+virMacAddrIsBroadcastRaw(const unsigned char s[VIR_MAC_BUFLEN])
+{
+    return memcmp(virMacAddrBroadcastAddrRaw, s, sizeof(*s)) == 0;
+}
diff --git a/src/util/virmacaddr.h b/src/util/virmacaddr.h
index 4c5074ce3c..1a2ff74da0 100644
--- a/src/util/virmacaddr.h
+++ b/src/util/virmacaddr.h
@@ -52,4 +52,6 @@ int virMacAddrParse(const char* str,
                     virMacAddrPtr addr) ATTRIBUTE_RETURN_CHECK;
 bool virMacAddrIsUnicast(const virMacAddrPtr addr);
 bool virMacAddrIsMulticast(const virMacAddrPtr addr);
+bool virMacAddrIsBroadcastRaw(const unsigned char s[VIR_MAC_BUFLEN]);
+
 #endif /* __VIR_MACADDR_H__ */