From 1aedf602440f70aef4dfc38ba552bf40ebf184c4 Mon Sep 17 00:00:00 2001
From: Beniamino Galvani <bgalvani@redhat.com>
Date: Thu, 5 Dec 2019 15:39:32 +0100
Subject: [PATCH] infiniband: allow reapply of MTU

(cherry picked from commit ceeefa82c54fe1e37f9a97ccf98dc9cb8773b0e6)
---
 src/devices/nm-device-infiniband.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/src/devices/nm-device-infiniband.c b/src/devices/nm-device-infiniband.c
index 24593ff1f5..9f79d9bbf6 100644
--- a/src/devices/nm-device-infiniband.c
+++ b/src/devices/nm-device-infiniband.c
@@ -190,6 +190,32 @@ update_connection (NMDevice *device, NMConnection *connection)
 	g_object_set (G_OBJECT (s_infiniband), NM_SETTING_INFINIBAND_TRANSPORT_MODE, transport_mode, NULL);
 }
 
+static gboolean
+can_reapply_change (NMDevice *device,
+                    const char *setting_name,
+                    NMSetting *s_old,
+                    NMSetting *s_new,
+                    GHashTable *diffs,
+                    GError **error)
+{
+	NMDeviceClass *device_class;
+
+	if (nm_streq (setting_name, NM_SETTING_INFINIBAND_SETTING_NAME)) {
+		return nm_device_hash_check_invalid_keys (diffs,
+		                                          NM_SETTING_INFINIBAND_SETTING_NAME,
+		                                          error,
+		                                          NM_SETTING_INFINIBAND_MTU); /* reapplied with IP config */
+	}
+
+	device_class = NM_DEVICE_CLASS (nm_device_infiniband_parent_class);
+	return device_class->can_reapply_change (device,
+	                                         setting_name,
+	                                         s_old,
+	                                         s_new,
+	                                         diffs,
+	                                         error);
+}
+
 static gboolean
 create_and_realize (NMDevice *device,
                     NMConnection *connection,
@@ -342,6 +368,7 @@ nm_device_infiniband_class_init (NMDeviceInfinibandClass *klass)
 	device_class->connection_type_check_compatible = NM_SETTING_INFINIBAND_SETTING_NAME;
 	device_class->link_types = NM_DEVICE_DEFINE_LINK_TYPES (NM_LINK_TYPE_INFINIBAND);
 
+	device_class->can_reapply_change = can_reapply_change;
 	device_class->create_and_realize = create_and_realize;
 	device_class->unrealize = unrealize;
 	device_class->get_generic_capabilities = get_generic_capabilities;