lib: add ipaddr_isset()

Compare ip address against 0

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/ipaddr.h b/lib/ipaddr.h
index ec08fc09a2..6bd614044c 100644
--- a/lib/ipaddr.h
+++ b/lib/ipaddr.h
@@ -119,6 +119,12 @@ static inline void ipv4_mapped_ipv6_to_ipv4(struct in6_addr *in6,
 	memcpy(in, (char *)in6 + 12, sizeof(struct in_addr));
 }
 
+static inline bool ipaddr_isset(struct ipaddr *ip)
+{
+	static struct ipaddr a = {};
+	return (0 == memcmp(&a, ip, sizeof(struct ipaddr)));
+}
+
 #ifdef __cplusplus
 }
 #endif