mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-27 20:07:09 +00:00
83e4bf7a74
After614732eaa1, no refcount is maintained for the vport-vxlan module. This allows the userspace to remove such module while vport-vxlan devices still exist, which leads to later oops. v1 -> v2: - move vport 'owner' initialization in ovs_vport_ops_register() and make such function a macro Fixes:614732eaa1("openvswitch: Use regular VXLAN net_device device") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2007-2014 Nicira, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of version 2 of the GNU General Public
|
|
* License as published by the Free Software Foundation.
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/if.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/ip.h>
|
|
#include <linux/if_tunnel.h>
|
|
#include <linux/if_vlan.h>
|
|
#include <linux/in.h>
|
|
#include <linux/in_route.h>
|
|
#include <linux/inetdevice.h>
|
|
#include <linux/jhash.h>
|
|
#include <linux/list.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/rculist.h>
|
|
#include <net/route.h>
|
|
#include <net/xfrm.h>
|
|
|
|
#include <net/icmp.h>
|
|
#include <net/ip.h>
|
|
#include <net/ip_tunnels.h>
|
|
#include <net/gre.h>
|
|
#include <net/net_namespace.h>
|
|
#include <net/netns/generic.h>
|
|
#include <net/protocol.h>
|
|
|
|
#include "datapath.h"
|
|
#include "vport.h"
|
|
#include "vport-netdev.h"
|
|
|
|
static struct vport_ops ovs_gre_vport_ops;
|
|
|
|
static struct vport *gre_tnl_create(const struct vport_parms *parms)
|
|
{
|
|
struct net *net = ovs_dp_get_net(parms->dp);
|
|
struct net_device *dev;
|
|
struct vport *vport;
|
|
|
|
vport = ovs_vport_alloc(0, &ovs_gre_vport_ops, parms);
|
|
if (IS_ERR(vport))
|
|
return vport;
|
|
|
|
rtnl_lock();
|
|
dev = gretap_fb_dev_create(net, parms->name, NET_NAME_USER);
|
|
if (IS_ERR(dev)) {
|
|
rtnl_unlock();
|
|
ovs_vport_free(vport);
|
|
return ERR_CAST(dev);
|
|
}
|
|
|
|
dev_change_flags(dev, dev->flags | IFF_UP);
|
|
rtnl_unlock();
|
|
|
|
return vport;
|
|
}
|
|
|
|
static struct vport *gre_create(const struct vport_parms *parms)
|
|
{
|
|
struct vport *vport;
|
|
|
|
vport = gre_tnl_create(parms);
|
|
if (IS_ERR(vport))
|
|
return vport;
|
|
|
|
return ovs_netdev_link(vport, parms->name);
|
|
}
|
|
|
|
static struct vport_ops ovs_gre_vport_ops = {
|
|
.type = OVS_VPORT_TYPE_GRE,
|
|
.create = gre_create,
|
|
.send = dev_queue_xmit,
|
|
.destroy = ovs_netdev_tunnel_destroy,
|
|
};
|
|
|
|
static int __init ovs_gre_tnl_init(void)
|
|
{
|
|
return ovs_vport_ops_register(&ovs_gre_vport_ops);
|
|
}
|
|
|
|
static void __exit ovs_gre_tnl_exit(void)
|
|
{
|
|
ovs_vport_ops_unregister(&ovs_gre_vport_ops);
|
|
}
|
|
|
|
module_init(ovs_gre_tnl_init);
|
|
module_exit(ovs_gre_tnl_exit);
|
|
|
|
MODULE_DESCRIPTION("OVS: GRE switching port");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("vport-type-3");
|