[VLAN]: Introduce the vlan_net structure and init/exit net ops.
Unlike TUN, it is empty from the very beginning, and will
be eventually populated later.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index cf8d810..9296601 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -32,6 +32,7 @@
#include <linux/rtnetlink.h>
#include <linux/notifier.h>
#include <net/net_namespace.h>
+#include <net/netns/generic.h>
#include <linux/if_vlan.h>
#include "vlan.h"
@@ -41,6 +42,8 @@
/* Global VLAN variables */
+int vlan_net_id;
+
/* Our listing of VLAN group(s) */
static struct hlist_head vlan_group_hash[VLAN_GRP_HASH_SIZE];
@@ -625,6 +628,41 @@
return err;
}
+static int vlan_init_net(struct net *net)
+{
+ int err;
+ struct vlan_net *vn;
+
+ err = -ENOMEM;
+ vn = kzalloc(sizeof(struct vlan_net), GFP_KERNEL);
+ if (vn == NULL)
+ goto err_alloc;
+
+ err = net_assign_generic(net, vlan_net_id, vn);
+ if (err < 0)
+ goto err_assign;
+
+ return 0;
+
+err_assign:
+ kfree(vn);
+err_alloc:
+ return err;
+}
+
+static void vlan_exit_net(struct net *net)
+{
+ struct vlan_net *vn;
+
+ vn = net_generic(net, vlan_net_id);
+ kfree(vn);
+}
+
+static struct pernet_operations vlan_net_ops = {
+ .init = vlan_init_net,
+ .exit = vlan_exit_net,
+};
+
static int __init vlan_proto_init(void)
{
int err;
@@ -632,6 +670,10 @@
pr_info("%s v%s %s\n", vlan_fullname, vlan_version, vlan_copyright);
pr_info("All bugs added by %s\n", vlan_buggyright);
+ err = register_pernet_gen_device(&vlan_net_id, &vlan_net_ops);
+ if (err < 0)
+ goto err0;
+
err = vlan_proc_init();
if (err < 0)
goto err1;
@@ -653,6 +695,8 @@
err2:
vlan_proc_cleanup();
err1:
+ unregister_pernet_gen_device(vlan_net_id, &vlan_net_ops);
+err0:
return err;
}
@@ -673,6 +717,8 @@
vlan_proc_cleanup();
+ unregister_pernet_gen_device(vlan_net_id, &vlan_net_ops);
+
synchronize_net();
}