platform: add network namespace support to platformth/platform-netns

Platform not only uses the netlink socket, but also sysfs, udev,
ethtool, mii. To properly support network namespaces, we must
switch the namespace as necessary. In case of udev, it is only
supported on the main namespace.

1 files changed, 71 insertions, 0 deletions

diff --git a/src/platform/nmp-netns-utils.h b/src/platform/nmp-netns-utils.h
new file mode 100644
index 0000000000..b1c5fefded
--- /dev/null
+++ b/src/platform/nmp-netns-utils.h
@@ -0,0 +1,71 @@
+/* -*- 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) 2016 Red Hat, Inc.
+ */
+
+#ifndef __NMP_NETNS_UTILS_H__
+#define __NMP_NETNS_UTILS_H__
+
+/*****************************************************************************/
+
+#define NMP_TYPE_NETNS            (nmp_netns_get_type ())
+#define NMP_NETNS(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NMP_TYPE_NETNS, NMPNetns))
+#define NMP_NETNS_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), NMP_TYPE_NETNS, NMPNetnsClass))
+#define NMP_IS_NETNS(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NMP_TYPE_NETNS))
+#define NMP_IS_NETNS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NMP_TYPE_NETNS))
+#define NMP_NETNS_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), NMP_TYPE_NETNS, NMPNetnsClass))
+
+#define NMP_NETNS_FD_NET          "fd-net"
+#define NMP_NETNS_FD_MNT          "fd-mnt"
+
+struct _NMPNetnsPrivate;
+
+struct _NMPNetns {
+	GObject parent;
+	struct _NMPNetnsPrivate *priv;
+};
+
+typedef struct {
+	GObjectClass parent;
+} NMPNetnsClass;
+
+GType nmp_netns_get_type (void);
+
+NMPNetns *nmp_netns_new (void);
+
+NMPNetns *nmp_netns_ref (NMPNetns *netns);
+NMPNetns *nmp_netns_unref (NMPNetns *netns);
+
+gboolean nmp_netns_push (NMPNetns *netns);
+gboolean nmp_netns_pop (NMPNetns *netns);
+
+NMPNetns *nmp_netns_get_current (void);
+NMPNetns *nmp_netns_get_initial (void);
+
+static inline void
+_nm_auto_pop_netns (void *p)
+{
+	NMPNetns *netns = *((NMPNetns **) p);
+
+	if (netns)
+		nmp_netns_pop (netns);
+}
+
+#define nm_auto_pop_netns __attribute__((cleanup(_nm_auto_pop_netns)))
+
+#endif /* __NMP_NETNS_UTILS_H__ */