MINOR: dns: new bitmasks to use against DNS flags
Current DNS client code implementation doesn't take care of response
flags setup by the server.
This patch introduces a couple of bitmasks one can use to retrieve the
truncated flag and the reply code available in the 2-bytes flag field.
diff --git a/include/types/dns.h b/include/types/dns.h
index d0a835d..589bb5d 100644
--- a/include/types/dns.h
+++ b/include/types/dns.h
@@ -51,6 +51,10 @@
#define DNS_RCODE_NX_DOMAIN 3 /* non existent domain */
#define DNS_RCODE_REFUSED 5 /* query refused */
+/* dns flags masks */
+#define DNS_FLAG_TRUNCATED 0x0200 /* mask for truncated flag */
+#define DNS_FLAG_REPLYCODE 0x000F /* mask for reply code */
+
/* DNS request or response header structure */
struct dns_header {
unsigned short id:16; /* identifier */