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a6ae068b | 1 | /* |
e23775f2 | 2 | * Copyright (c) 2015 Nicira, Inc. |
a6ae068b LJ |
3 | * |
4 | * This program is free software; you can redistribute it and/or | |
e23775f2 PS |
5 | * modify it under the terms of the GNU General Public License |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
a6ae068b LJ |
8 | */ |
9 | ||
10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
11 | ||
a6ae068b LJ |
12 | #include <linux/in.h> |
13 | #include <linux/ip.h> | |
a6ae068b | 14 | #include <linux/net.h> |
85c9de19 | 15 | #include <linux/rculist.h> |
a6ae068b | 16 | #include <linux/udp.h> |
e23775f2 PS |
17 | #include <linux/if_vlan.h> |
18 | #include <linux/module.h> | |
a6ae068b | 19 | |
e23775f2 | 20 | #include <net/lisp.h> |
a6ae068b LJ |
21 | #include <net/icmp.h> |
22 | #include <net/ip.h> | |
11aa8dff | 23 | #include <net/route.h> |
a6ae068b | 24 | #include <net/udp.h> |
11aa8dff | 25 | #include <net/xfrm.h> |
a6ae068b LJ |
26 | |
27 | #include "datapath.h" | |
a6ae068b | 28 | #include "vport.h" |
e23775f2 | 29 | #include "vport-netdev.h" |
a6ae068b | 30 | |
e23775f2 | 31 | static struct vport_ops ovs_lisp_vport_ops; |
a6ae068b LJ |
32 | /** |
33 | * struct lisp_port - Keeps track of open UDP ports | |
e23775f2 | 34 | * @dst_port: destination port. |
a6ae068b LJ |
35 | */ |
36 | struct lisp_port { | |
e23775f2 | 37 | u16 port_no; |
a6ae068b LJ |
38 | }; |
39 | ||
c405d282 PS |
40 | static inline struct lisp_port *lisp_vport(const struct vport *vport) |
41 | { | |
42 | return vport_priv(vport); | |
43 | } | |
44 | ||
e23775f2 PS |
45 | static int lisp_get_options(const struct vport *vport, |
46 | struct sk_buff *skb) | |
a6ae068b | 47 | { |
c405d282 | 48 | struct lisp_port *lisp_port = lisp_vport(vport); |
a6ae068b | 49 | |
e23775f2 | 50 | if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, lisp_port->port_no)) |
c405d282 PS |
51 | return -EMSGSIZE; |
52 | return 0; | |
a6ae068b LJ |
53 | } |
54 | ||
c405d282 | 55 | static struct vport *lisp_tnl_create(const struct vport_parms *parms) |
85c9de19 | 56 | { |
c405d282 PS |
57 | struct net *net = ovs_dp_get_net(parms->dp); |
58 | struct nlattr *options = parms->options; | |
85c9de19 | 59 | struct lisp_port *lisp_port; |
e23775f2 | 60 | struct net_device *dev; |
c405d282 | 61 | struct vport *vport; |
a6ae068b | 62 | struct nlattr *a; |
a6ae068b | 63 | u16 dst_port; |
e23775f2 | 64 | int err; |
a6ae068b LJ |
65 | |
66 | if (!options) { | |
67 | err = -EINVAL; | |
c405d282 | 68 | goto error; |
a6ae068b LJ |
69 | } |
70 | ||
71 | a = nla_find_nested(options, OVS_TUNNEL_ATTR_DST_PORT); | |
72 | if (a && nla_len(a) == sizeof(u16)) { | |
73 | dst_port = nla_get_u16(a); | |
74 | } else { | |
75 | /* Require destination port from userspace. */ | |
76 | err = -EINVAL; | |
c405d282 | 77 | goto error; |
a6ae068b LJ |
78 | } |
79 | ||
c405d282 PS |
80 | vport = ovs_vport_alloc(sizeof(struct lisp_port), |
81 | &ovs_lisp_vport_ops, parms); | |
82 | if (IS_ERR(vport)) | |
83 | return vport; | |
a6ae068b | 84 | |
c405d282 | 85 | lisp_port = lisp_vport(vport); |
e23775f2 PS |
86 | lisp_port->port_no = dst_port; |
87 | ||
88 | rtnl_lock(); | |
89 | dev = lisp_dev_create_fb(net, parms->name, NET_NAME_USER, dst_port); | |
90 | if (IS_ERR(dev)) { | |
91 | rtnl_unlock(); | |
92 | ovs_vport_free(vport); | |
93 | return ERR_CAST(dev); | |
94 | } | |
c59b72b5 PS |
95 | err = dev_change_flags(dev, dev->flags | IFF_UP); |
96 | if (err < 0) { | |
97 | rtnl_delete_link(dev); | |
98 | rtnl_unlock(); | |
99 | ovs_vport_free(vport); | |
100 | goto error; | |
101 | } | |
a6ae068b | 102 | |
e23775f2 | 103 | rtnl_unlock(); |
c405d282 | 104 | return vport; |
a6ae068b | 105 | error: |
c405d282 | 106 | return ERR_PTR(err); |
a6ae068b LJ |
107 | } |
108 | ||
e23775f2 | 109 | static struct vport *lisp_create(const struct vport_parms *parms) |
a6ae068b | 110 | { |
e23775f2 | 111 | struct vport *vport; |
8b7ea2d4 | 112 | |
e23775f2 PS |
113 | vport = lisp_tnl_create(parms); |
114 | if (IS_ERR(vport)) | |
115 | return vport; | |
8b7ea2d4 | 116 | |
e23775f2 | 117 | return ovs_netdev_link(vport, parms->name); |
8b7ea2d4 WZ |
118 | } |
119 | ||
5a38795f | 120 | static struct vport_ops ovs_lisp_vport_ops = { |
e23775f2 PS |
121 | .type = OVS_VPORT_TYPE_LISP, |
122 | .create = lisp_create, | |
123 | .destroy = ovs_netdev_tunnel_destroy, | |
124 | .get_options = lisp_get_options, | |
564666e9 | 125 | #ifndef USE_UPSTREAM_TUNNEL |
aad7cb91 | 126 | .fill_metadata_dst = lisp_fill_metadata_dst, |
564666e9 | 127 | #endif |
e23775f2 | 128 | .send = lisp_xmit, |
a6ae068b | 129 | }; |
5a38795f TG |
130 | |
131 | static int __init ovs_lisp_tnl_init(void) | |
132 | { | |
133 | return ovs_vport_ops_register(&ovs_lisp_vport_ops); | |
134 | } | |
135 | ||
136 | static void __exit ovs_lisp_tnl_exit(void) | |
137 | { | |
138 | ovs_vport_ops_unregister(&ovs_lisp_vport_ops); | |
139 | } | |
140 | ||
141 | module_init(ovs_lisp_tnl_init); | |
142 | module_exit(ovs_lisp_tnl_exit); | |
143 | ||
e23775f2 | 144 | MODULE_DESCRIPTION("OVS: Lisp switching port"); |
5a38795f TG |
145 | MODULE_LICENSE("GPL"); |
146 | MODULE_ALIAS("vport-type-105"); |