1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2014 Nicira, Inc.
6 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10 #include <linux/net.h>
11 #include <linux/rculist.h>
12 #include <linux/udp.h>
13 #include <linux/if_vlan.h>
14 #include <linux/module.h>
16 #include <net/geneve.h>
19 #include <net/route.h>
25 #include "vport-netdev.h"
27 static struct vport_ops ovs_geneve_vport_ops;
29 * struct geneve_port - Keeps track of open UDP ports
30 * @dst_port: destination port.
36 static inline struct geneve_port *geneve_vport(const struct vport *vport)
38 return vport_priv(vport);
41 static int geneve_get_options(const struct vport *vport,
44 struct geneve_port *geneve_port = geneve_vport(vport);
46 if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, geneve_port->dst_port))
51 static struct vport *geneve_tnl_create(const struct vport_parms *parms)
53 struct net *net = ovs_dp_get_net(parms->dp);
54 struct nlattr *options = parms->options;
55 struct geneve_port *geneve_port;
56 struct net_device *dev;
67 a = nla_find_nested(options, OVS_TUNNEL_ATTR_DST_PORT);
68 if (a && nla_len(a) == sizeof(u16)) {
69 dst_port = nla_get_u16(a);
71 /* Require destination port from userspace. */
76 vport = ovs_vport_alloc(sizeof(struct geneve_port),
77 &ovs_geneve_vport_ops, parms);
81 geneve_port = geneve_vport(vport);
82 geneve_port->dst_port = dst_port;
85 dev = geneve_dev_create_fb(net, parms->name, NET_NAME_USER, dst_port);
88 ovs_vport_free(vport);
92 err = dev_change_flags(dev, dev->flags | IFF_UP, NULL);
94 rtnl_delete_link(dev, 0, NULL);
96 ovs_vport_free(vport);
106 static struct vport *geneve_create(const struct vport_parms *parms)
110 vport = geneve_tnl_create(parms);
114 return ovs_netdev_link(vport, parms->name);
117 static struct vport_ops ovs_geneve_vport_ops = {
118 .type = OVS_VPORT_TYPE_GENEVE,
119 .create = geneve_create,
120 .destroy = ovs_netdev_tunnel_destroy,
121 .get_options = geneve_get_options,
122 .send = dev_queue_xmit,
125 static int __init ovs_geneve_tnl_init(void)
127 return ovs_vport_ops_register(&ovs_geneve_vport_ops);
130 static void __exit ovs_geneve_tnl_exit(void)
132 ovs_vport_ops_unregister(&ovs_geneve_vport_ops);
135 module_init(ovs_geneve_tnl_init);
136 module_exit(ovs_geneve_tnl_exit);
138 MODULE_DESCRIPTION("OVS: Geneve switching port");
139 MODULE_LICENSE("GPL");
140 MODULE_ALIAS("vport-type-5");