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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2007-2014 Nicira, Inc.
4 */
5
6#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7
8#include <linux/if.h>
9#include <linux/skbuff.h>
10#include <linux/ip.h>
11#include <linux/if_tunnel.h>
12#include <linux/if_vlan.h>
13#include <linux/in.h>
14#include <linux/in_route.h>
15#include <linux/inetdevice.h>
16#include <linux/jhash.h>
17#include <linux/list.h>
18#include <linux/kernel.h>
19#include <linux/module.h>
20#include <linux/workqueue.h>
21#include <linux/rculist.h>
22#include <net/route.h>
23#include <net/xfrm.h>
24
25#include <net/icmp.h>
26#include <net/ip.h>
27#include <net/ip_tunnels.h>
28#include <net/gre.h>
29#include <net/net_namespace.h>
30#include <net/netns/generic.h>
31#include <net/protocol.h>
32
33#include "datapath.h"
34#include "vport.h"
35#include "vport-netdev.h"
36
37static struct vport_ops ovs_gre_vport_ops;
38
39static struct vport *gre_tnl_create(const struct vport_parms *parms)
40{
41 struct net *net = ovs_dp_get_net(parms->dp);
42 struct net_device *dev;
43 struct vport *vport;
44 int err;
45
46 vport = ovs_vport_alloc(0, &ovs_gre_vport_ops, parms);
47 if (IS_ERR(vport))
48 return vport;
49
50 rtnl_lock();
51 dev = gretap_fb_dev_create(net, parms->name, NET_NAME_USER);
52 if (IS_ERR(dev)) {
53 rtnl_unlock();
54 ovs_vport_free(vport);
55 return ERR_CAST(dev);
56 }
57
58 err = dev_change_flags(dev, dev->flags | IFF_UP, NULL);
59 if (err < 0) {
60 rtnl_delete_link(dev);
61 rtnl_unlock();
62 ovs_vport_free(vport);
63 return ERR_PTR(err);
64 }
65
66 rtnl_unlock();
67 return vport;
68}
69
70static struct vport *gre_create(const struct vport_parms *parms)
71{
72 struct vport *vport;
73
74 vport = gre_tnl_create(parms);
75 if (IS_ERR(vport))
76 return vport;
77
78 return ovs_netdev_link(vport, parms->name);
79}
80
81static struct vport_ops ovs_gre_vport_ops = {
82 .type = OVS_VPORT_TYPE_GRE,
83 .create = gre_create,
84 .send = dev_queue_xmit,
85 .destroy = ovs_netdev_tunnel_destroy,
86};
87
88static int __init ovs_gre_tnl_init(void)
89{
90 return ovs_vport_ops_register(&ovs_gre_vport_ops);
91}
92
93static void __exit ovs_gre_tnl_exit(void)
94{
95 ovs_vport_ops_unregister(&ovs_gre_vport_ops);
96}
97
98module_init(ovs_gre_tnl_init);
99module_exit(ovs_gre_tnl_exit);
100
101MODULE_DESCRIPTION("OVS: GRE switching port");
102MODULE_LICENSE("GPL");
103MODULE_ALIAS("vport-type-3");
1/*
2 * Copyright (c) 2007-2014 Nicira, Inc.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
16 * 02110-1301, USA
17 */
18
19#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
21#include <linux/if.h>
22#include <linux/skbuff.h>
23#include <linux/ip.h>
24#include <linux/if_tunnel.h>
25#include <linux/if_vlan.h>
26#include <linux/in.h>
27#include <linux/in_route.h>
28#include <linux/inetdevice.h>
29#include <linux/jhash.h>
30#include <linux/list.h>
31#include <linux/kernel.h>
32#include <linux/module.h>
33#include <linux/workqueue.h>
34#include <linux/rculist.h>
35#include <net/route.h>
36#include <net/xfrm.h>
37
38#include <net/icmp.h>
39#include <net/ip.h>
40#include <net/ip_tunnels.h>
41#include <net/gre.h>
42#include <net/net_namespace.h>
43#include <net/netns/generic.h>
44#include <net/protocol.h>
45
46#include "datapath.h"
47#include "vport.h"
48#include "vport-netdev.h"
49
50static struct vport_ops ovs_gre_vport_ops;
51
52static struct vport *gre_tnl_create(const struct vport_parms *parms)
53{
54 struct net *net = ovs_dp_get_net(parms->dp);
55 struct net_device *dev;
56 struct vport *vport;
57
58 vport = ovs_vport_alloc(0, &ovs_gre_vport_ops, parms);
59 if (IS_ERR(vport))
60 return vport;
61
62 rtnl_lock();
63 dev = gretap_fb_dev_create(net, parms->name, NET_NAME_USER);
64 if (IS_ERR(dev)) {
65 rtnl_unlock();
66 ovs_vport_free(vport);
67 return ERR_CAST(dev);
68 }
69
70 dev_change_flags(dev, dev->flags | IFF_UP);
71 rtnl_unlock();
72
73 return vport;
74}
75
76static struct vport *gre_create(const struct vport_parms *parms)
77{
78 struct vport *vport;
79
80 vport = gre_tnl_create(parms);
81 if (IS_ERR(vport))
82 return vport;
83
84 return ovs_netdev_link(vport, parms->name);
85}
86
87static struct vport_ops ovs_gre_vport_ops = {
88 .type = OVS_VPORT_TYPE_GRE,
89 .create = gre_create,
90 .send = dev_queue_xmit,
91 .destroy = ovs_netdev_tunnel_destroy,
92};
93
94static int __init ovs_gre_tnl_init(void)
95{
96 return ovs_vport_ops_register(&ovs_gre_vport_ops);
97}
98
99static void __exit ovs_gre_tnl_exit(void)
100{
101 ovs_vport_ops_unregister(&ovs_gre_vport_ops);
102}
103
104module_init(ovs_gre_tnl_init);
105module_exit(ovs_gre_tnl_exit);
106
107MODULE_DESCRIPTION("OVS: GRE switching port");
108MODULE_LICENSE("GPL");
109MODULE_ALIAS("vport-type-3");