Commit | Line | Data |
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c9422999 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
aa310701 | 2 | /* |
8c8b1b83 | 3 | * Copyright (c) 2007-2014 Nicira, Inc. |
aa310701 PS |
4 | */ |
5 | ||
aa310701 PS |
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> | |
aa310701 PS |
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> | |
62b9c8d0 | 19 | #include <linux/module.h> |
aa310701 PS |
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" | |
b2acd1dc | 35 | #include "vport-netdev.h" |
aa310701 | 36 | |
62b9c8d0 TG |
37 | static struct vport_ops ovs_gre_vport_ops; |
38 | ||
b2acd1dc | 39 | static struct vport *gre_tnl_create(const struct vport_parms *parms) |
aa310701 | 40 | { |
b2acd1dc PS |
41 | struct net *net = ovs_dp_get_net(parms->dp); |
42 | struct net_device *dev; | |
e0bb8c44 | 43 | struct vport *vport; |
4b5b9ba5 | 44 | int err; |
e0bb8c44 | 45 | |
b2acd1dc PS |
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); | |
aa310701 PS |
56 | } |
57 | ||
567c5e13 | 58 | err = dev_change_flags(dev, dev->flags | IFF_UP, NULL); |
4b5b9ba5 MP |
59 | if (err < 0) { |
60 | rtnl_delete_link(dev); | |
61 | rtnl_unlock(); | |
62 | ovs_vport_free(vport); | |
63 | return ERR_PTR(err); | |
64 | } | |
aa310701 | 65 | |
4b5b9ba5 | 66 | rtnl_unlock(); |
b2acd1dc | 67 | return vport; |
aa310701 PS |
68 | } |
69 | ||
70 | static struct vport *gre_create(const struct vport_parms *parms) | |
71 | { | |
aa310701 | 72 | struct vport *vport; |
aa310701 | 73 | |
b2acd1dc | 74 | vport = gre_tnl_create(parms); |
aa310701 | 75 | if (IS_ERR(vport)) |
b2acd1dc | 76 | return vport; |
aa310701 | 77 | |
b2acd1dc | 78 | return ovs_netdev_link(vport, parms->name); |
aa310701 PS |
79 | } |
80 | ||
62b9c8d0 | 81 | static struct vport_ops ovs_gre_vport_ops = { |
aa310701 PS |
82 | .type = OVS_VPORT_TYPE_GRE, |
83 | .create = gre_create, | |
aec15924 | 84 | .send = dev_queue_xmit, |
b2acd1dc | 85 | .destroy = ovs_netdev_tunnel_destroy, |
aa310701 | 86 | }; |
62b9c8d0 TG |
87 | |
88 | static int __init ovs_gre_tnl_init(void) | |
89 | { | |
90 | return ovs_vport_ops_register(&ovs_gre_vport_ops); | |
91 | } | |
92 | ||
93 | static void __exit ovs_gre_tnl_exit(void) | |
94 | { | |
95 | ovs_vport_ops_unregister(&ovs_gre_vport_ops); | |
96 | } | |
97 | ||
98 | module_init(ovs_gre_tnl_init); | |
99 | module_exit(ovs_gre_tnl_exit); | |
100 | ||
101 | MODULE_DESCRIPTION("OVS: GRE switching port"); | |
102 | MODULE_LICENSE("GPL"); | |
103 | MODULE_ALIAS("vport-type-3"); |