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-rw-r--r--src/ndisc/nm-ndisc.h33
1 files changed, 32 insertions, 1 deletions
diff --git a/src/ndisc/nm-ndisc.h b/src/ndisc/nm-ndisc.h
index b66c2289..9a8a27d7 100644
--- a/src/ndisc/nm-ndisc.h
+++ b/src/ndisc/nm-ndisc.h
@@ -27,6 +27,9 @@
 #include "nm-setting-ip6-config.h"
 #include "NetworkManagerUtils.h"
 
+#include "platform/nm-platform.h"
+#include "platform/nmp-object.h"
+
 #define NM_TYPE_NDISC            (nm_ndisc_get_type ())
 #define NM_NDISC(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_NDISC, NMNDisc))
 #define NM_NDISC_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_NDISC, NMNDiscClass))
@@ -174,7 +177,7 @@ NMNDiscNodeType nm_ndisc_get_node_type (NMNDisc *self);
 
 gboolean nm_ndisc_set_iid (NMNDisc *ndisc, const NMUtilsIPv6IfaceId iid);
 void nm_ndisc_start (NMNDisc *ndisc);
-void nm_ndisc_dad_failed (NMNDisc *ndisc, struct in6_addr *address);
+void nm_ndisc_dad_failed (NMNDisc *ndisc, const struct in6_addr *address);
 void nm_ndisc_set_config (NMNDisc *ndisc,
                           const GArray *addresses,
                           const GArray *dns_servers,
@@ -184,4 +187,32 @@ NMPlatform *nm_ndisc_get_platform (NMNDisc *self);
 NMPNetns *nm_ndisc_netns_get (NMNDisc *self);
 gboolean nm_ndisc_netns_push (NMNDisc *self, NMPNetns **netns);
 
+static inline gboolean
+nm_ndisc_dad_addr_is_fail_candidate_event (NMPlatformSignalChangeType change_type,
+                                           const NMPlatformIP6Address *addr)
+{
+	return    !NM_FLAGS_HAS (addr->n_ifa_flags, IFA_F_TEMPORARY)
+	       && (   (change_type == NM_PLATFORM_SIGNAL_CHANGED && addr->n_ifa_flags & IFA_F_DADFAILED)
+	           || (change_type == NM_PLATFORM_SIGNAL_REMOVED && addr->n_ifa_flags & IFA_F_TENTATIVE));
+}
+
+static inline gboolean
+nm_ndisc_dad_addr_is_fail_candidate (NMPlatform *platform,
+                                     const NMPObject *obj)
+{
+	const NMPlatformIP6Address *addr;
+
+	addr = NMP_OBJECT_CAST_IP6_ADDRESS (nm_platform_lookup_obj (platform,
+	                                                            NMP_CACHE_ID_TYPE_OBJECT_TYPE,
+	                                                            obj));
+	if (   addr
+	    && (   NM_FLAGS_HAS (addr->n_ifa_flags, IFA_F_TEMPORARY)
+	        || !NM_FLAGS_HAS (addr->n_ifa_flags, IFA_F_DADFAILED))) {
+		/* the address still/again exists and is not in DADFAILED state. Skip it. */
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
 #endif /* __NETWORKMANAGER_NDISC_H__ */