core: add nm_platform_link_refresh() function to refresh the libnl cache for links

Signed-off-by: Thomas Haller <thaller@redhat.com>

3 files changed, 39 insertions, 0 deletions

diff --git a/src/platform/nm-linux-platform.c b/src/platform/nm-linux-platform.c
index b47ee7481b..96274353bc 100644
--- a/src/platform/nm-linux-platform.c
+++ b/src/platform/nm-linux-platform.c
@@ -1669,6 +1669,20 @@ link_get_flags (NMPlatform *platform, int ifindex)
 }
 
 static gboolean
+link_refresh (NMPlatform *platform, int ifindex)
+{
+	auto_nl_object struct rtnl_link *rtnllink = rtnl_link_alloc ();
+
+	if (rtnllink) {
+		rtnl_link_set_ifindex (rtnllink, ifindex);
+		return refresh_object (platform, (struct nl_object *) rtnllink, FALSE, NM_PLATFORM_REASON_EXTERNAL);
+	} else
+		error ("link_refresh failed with out of memory");
+
+	return FALSE;
+}
+
+static gboolean
 link_is_up (NMPlatform *platform, int ifindex)
 {
 	return !!(link_get_flags (platform, ifindex) & IFF_UP);
@@ -3026,6 +3040,8 @@ nm_linux_platform_class_init (NMLinuxPlatformClass *klass)
 	platform_class->link_get_type = link_get_type;
 	platform_class->link_get_type_name = link_get_type_name;
 
+	platform_class->link_refresh = link_refresh;
+
 	platform_class->link_set_up = link_set_up;
 	platform_class->link_set_down = link_set_down;
 	platform_class->link_set_arp = link_set_arp;
diff --git a/src/platform/nm-platform.c b/src/platform/nm-platform.c
index fcd4b192c5..eb84b6d7fe 100644
--- a/src/platform/nm-platform.c
+++ b/src/platform/nm-platform.c
@@ -640,6 +640,25 @@ nm_platform_link_supports_slaves (int ifindex)
 }
 
 /**
+ * nm_platform_link_refresh:
+ * @ifindex: Interface index
+ *
+ * Reload the cache for ifindex synchronously.
+ */
+gboolean
+nm_platform_link_refresh (int ifindex)
+{
+	reset_error ();
+
+	g_return_val_if_fail (ifindex > 0, FALSE);
+
+	if (klass->link_refresh)
+		return klass->link_refresh (platform, ifindex);
+
+	return TRUE;
+}
+
+/**
  * nm_platform_link_is_up:
  * @ifindex: Interface index
  *
diff --git a/src/platform/nm-platform.h b/src/platform/nm-platform.h
index 465a64ab7c..bdf82b39fd 100644
--- a/src/platform/nm-platform.h
+++ b/src/platform/nm-platform.h
@@ -271,6 +271,8 @@ typedef struct {
 	NMLinkType (*link_get_type) (NMPlatform *, int ifindex);
 	const char *(*link_get_type_name) (NMPlatform *, int ifindex);
 
+	gboolean (*link_refresh) (NMPlatform *, int ifindex);
+
 	gboolean (*link_set_up) (NMPlatform *, int ifindex);
 	gboolean (*link_set_down) (NMPlatform *, int ifindex);
 	gboolean (*link_set_arp) (NMPlatform *, int ifindex);
@@ -397,6 +399,8 @@ const char *nm_platform_link_get_type_name (int ifindex);
 gboolean nm_platform_link_is_software (int ifindex);
 gboolean nm_platform_link_supports_slaves (int ifindex);
 
+gboolean nm_platform_link_refresh (int ifindex);
+
 gboolean nm_platform_link_set_up (int ifindex);
 gboolean nm_platform_link_set_down (int ifindex);
 gboolean nm_platform_link_set_arp (int ifindex);