From 66f5256b94dc26c782266e1ecc8288811398aa31 Mon Sep 17 00:00:00 2001
From: Thomas Haller <thaller@redhat.com>
Date: Tue, 11 Feb 2014 13:58:00 +0100
Subject: [PATCH] core: add nm_platform_link_refresh() function to refresh the
 libnl cache for links

Signed-off-by: Thomas Haller <thaller@redhat.com>
---
 src/platform/nm-linux-platform.c | 16 ++++++++++++++++
 src/platform/nm-platform.c       | 19 +++++++++++++++++++
 src/platform/nm-platform.h       |  4 ++++
 3 files changed, 39 insertions(+)

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
@@ -1668,6 +1668,20 @@ link_get_flags (NMPlatform *platform, int ifindex)
 	return rtnl_link_get_flags (rtnllink);
 }
 
+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)
 {
@@ -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
@@ -639,6 +639,25 @@ nm_platform_link_supports_slaves (int ifindex)
 	return (nm_platform_link_get_type (ifindex) & 0x20000);
 }
 
+/**
+ * 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);