platform: add nm-netlink.h for netlink related helper functions

Especially useful, because we don't link against libnl-genl-3.so
but re-implement generic netlink support. Such code should go there
so it can be used by various components.

Makefile.am

@@ -1374,6 +1374,9 @@ src_libNetworkManagerBase_la_SOURCES = \
 	src/NetworkManagerUtils.c \
 	src/NetworkManagerUtils.h \
 	\
+	src/platform/nm-netlink.c \
+	src/platform/nm-netlink.h \
+	\
 	src/platform/nmp-netns.c \
 	src/platform/nmp-netns.h \
 	src/platform/nmp-object.c \

src/meson.build

@@ -54,6 +54,7 @@ sources = files(
   'dhcp/nm-dhcp-utils.c',
   'ndisc/nm-lndp-ndisc.c',
   'ndisc/nm-ndisc.c',
+  'platform/nm-netlink.c',
   'platform/wifi/wifi-utils-nl80211.c',
   'platform/wifi/wifi-utils.c',
   'platform/nm-linux-platform.c',

src/platform/nm-netlink.c

@@ -0,0 +1,25 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
+/* nm-platform.c - Handle runtime kernel networking configuration
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Copyright (C) 2018 Red Hat, Inc.
+ */
+
+#include "nm-default.h"
+
+#include "nm-netlink.h"
+
+/*****************************************************************************/

src/platform/nm-netlink.h

@@ -0,0 +1,24 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
+/* nm-platform.c - Handle runtime kernel networking configuration
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Copyright (C) 2018 Red Hat, Inc.
+ */
+
+#ifndef __NM_NETLINK_H__
+#define __NM_NETLINK_H__
+
+#endif /* __NM_NETLINK_H__ */