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Commit | Line | Data |
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e314dbdc PE |
1 | /* |
2 | * drivers/net/veth.c | |
3 | * | |
4 | * Copyright (C) 2007 OpenVZ http://openvz.org, SWsoft Inc | |
5 | * | |
6 | * Author: Pavel Emelianov <xemul@openvz.org> | |
7 | * Ethtool interface from: Eric W. Biederman <ebiederm@xmission.com> | |
8 | * | |
9 | */ | |
10 | ||
e314dbdc | 11 | #include <linux/netdevice.h> |
5a0e3ad6 | 12 | #include <linux/slab.h> |
e314dbdc PE |
13 | #include <linux/ethtool.h> |
14 | #include <linux/etherdevice.h> | |
cf05c700 | 15 | #include <linux/u64_stats_sync.h> |
e314dbdc | 16 | |
f7b12606 | 17 | #include <net/rtnetlink.h> |
e314dbdc PE |
18 | #include <net/dst.h> |
19 | #include <net/xfrm.h> | |
ecef969e | 20 | #include <linux/veth.h> |
9d9779e7 | 21 | #include <linux/module.h> |
e314dbdc PE |
22 | |
23 | #define DRV_NAME "veth" | |
24 | #define DRV_VERSION "1.0" | |
25 | ||
2681128f ED |
26 | struct pcpu_vstats { |
27 | u64 packets; | |
28 | u64 bytes; | |
cf05c700 | 29 | struct u64_stats_sync syncp; |
e314dbdc PE |
30 | }; |
31 | ||
32 | struct veth_priv { | |
d0e2c55e | 33 | struct net_device __rcu *peer; |
2681128f | 34 | atomic64_t dropped; |
163e5292 | 35 | unsigned requested_headroom; |
e314dbdc PE |
36 | }; |
37 | ||
e314dbdc PE |
38 | /* |
39 | * ethtool interface | |
40 | */ | |
41 | ||
42 | static struct { | |
43 | const char string[ETH_GSTRING_LEN]; | |
44 | } ethtool_stats_keys[] = { | |
45 | { "peer_ifindex" }, | |
46 | }; | |
47 | ||
48 | static int veth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
49 | { | |
50 | cmd->supported = 0; | |
51 | cmd->advertising = 0; | |
70739497 | 52 | ethtool_cmd_speed_set(cmd, SPEED_10000); |
e314dbdc PE |
53 | cmd->duplex = DUPLEX_FULL; |
54 | cmd->port = PORT_TP; | |
55 | cmd->phy_address = 0; | |
56 | cmd->transceiver = XCVR_INTERNAL; | |
57 | cmd->autoneg = AUTONEG_DISABLE; | |
58 | cmd->maxtxpkt = 0; | |
59 | cmd->maxrxpkt = 0; | |
60 | return 0; | |
61 | } | |
62 | ||
63 | static void veth_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
64 | { | |
33a5ba14 RJ |
65 | strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
66 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); | |
e314dbdc PE |
67 | } |
68 | ||
69 | static void veth_get_strings(struct net_device *dev, u32 stringset, u8 *buf) | |
70 | { | |
71 | switch(stringset) { | |
72 | case ETH_SS_STATS: | |
73 | memcpy(buf, ðtool_stats_keys, sizeof(ethtool_stats_keys)); | |
74 | break; | |
75 | } | |
76 | } | |
77 | ||
b9f2c044 | 78 | static int veth_get_sset_count(struct net_device *dev, int sset) |
e314dbdc | 79 | { |
b9f2c044 JG |
80 | switch (sset) { |
81 | case ETH_SS_STATS: | |
82 | return ARRAY_SIZE(ethtool_stats_keys); | |
83 | default: | |
84 | return -EOPNOTSUPP; | |
85 | } | |
e314dbdc PE |
86 | } |
87 | ||
88 | static void veth_get_ethtool_stats(struct net_device *dev, | |
89 | struct ethtool_stats *stats, u64 *data) | |
90 | { | |
d0e2c55e ED |
91 | struct veth_priv *priv = netdev_priv(dev); |
92 | struct net_device *peer = rtnl_dereference(priv->peer); | |
e314dbdc | 93 | |
d0e2c55e | 94 | data[0] = peer ? peer->ifindex : 0; |
e314dbdc PE |
95 | } |
96 | ||
0fc0b732 | 97 | static const struct ethtool_ops veth_ethtool_ops = { |
e314dbdc PE |
98 | .get_settings = veth_get_settings, |
99 | .get_drvinfo = veth_get_drvinfo, | |
100 | .get_link = ethtool_op_get_link, | |
e314dbdc | 101 | .get_strings = veth_get_strings, |
b9f2c044 | 102 | .get_sset_count = veth_get_sset_count, |
e314dbdc PE |
103 | .get_ethtool_stats = veth_get_ethtool_stats, |
104 | }; | |
105 | ||
424efe9c | 106 | static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev) |
e314dbdc | 107 | { |
2681128f | 108 | struct veth_priv *priv = netdev_priv(dev); |
d0e2c55e | 109 | struct net_device *rcv; |
2681128f | 110 | int length = skb->len; |
e314dbdc | 111 | |
d0e2c55e ED |
112 | rcu_read_lock(); |
113 | rcv = rcu_dereference(priv->peer); | |
114 | if (unlikely(!rcv)) { | |
115 | kfree_skb(skb); | |
116 | goto drop; | |
117 | } | |
e314dbdc | 118 | |
2681128f ED |
119 | if (likely(dev_forward_skb(rcv, skb) == NET_RX_SUCCESS)) { |
120 | struct pcpu_vstats *stats = this_cpu_ptr(dev->vstats); | |
e314dbdc | 121 | |
2681128f ED |
122 | u64_stats_update_begin(&stats->syncp); |
123 | stats->bytes += length; | |
124 | stats->packets++; | |
125 | u64_stats_update_end(&stats->syncp); | |
126 | } else { | |
d0e2c55e | 127 | drop: |
2681128f ED |
128 | atomic64_inc(&priv->dropped); |
129 | } | |
d0e2c55e | 130 | rcu_read_unlock(); |
6ed10654 | 131 | return NETDEV_TX_OK; |
e314dbdc PE |
132 | } |
133 | ||
134 | /* | |
135 | * general routines | |
136 | */ | |
137 | ||
2681128f | 138 | static u64 veth_stats_one(struct pcpu_vstats *result, struct net_device *dev) |
e314dbdc | 139 | { |
cf05c700 | 140 | struct veth_priv *priv = netdev_priv(dev); |
11687a10 | 141 | int cpu; |
e314dbdc | 142 | |
2681128f ED |
143 | result->packets = 0; |
144 | result->bytes = 0; | |
2b1c8b0f | 145 | for_each_possible_cpu(cpu) { |
2681128f ED |
146 | struct pcpu_vstats *stats = per_cpu_ptr(dev->vstats, cpu); |
147 | u64 packets, bytes; | |
cf05c700 ED |
148 | unsigned int start; |
149 | ||
150 | do { | |
57a7744e | 151 | start = u64_stats_fetch_begin_irq(&stats->syncp); |
2681128f ED |
152 | packets = stats->packets; |
153 | bytes = stats->bytes; | |
57a7744e | 154 | } while (u64_stats_fetch_retry_irq(&stats->syncp, start)); |
2681128f ED |
155 | result->packets += packets; |
156 | result->bytes += bytes; | |
11687a10 | 157 | } |
2681128f ED |
158 | return atomic64_read(&priv->dropped); |
159 | } | |
160 | ||
161 | static struct rtnl_link_stats64 *veth_get_stats64(struct net_device *dev, | |
162 | struct rtnl_link_stats64 *tot) | |
163 | { | |
164 | struct veth_priv *priv = netdev_priv(dev); | |
d0e2c55e | 165 | struct net_device *peer; |
2681128f ED |
166 | struct pcpu_vstats one; |
167 | ||
168 | tot->tx_dropped = veth_stats_one(&one, dev); | |
169 | tot->tx_bytes = one.bytes; | |
170 | tot->tx_packets = one.packets; | |
171 | ||
d0e2c55e ED |
172 | rcu_read_lock(); |
173 | peer = rcu_dereference(priv->peer); | |
174 | if (peer) { | |
175 | tot->rx_dropped = veth_stats_one(&one, peer); | |
176 | tot->rx_bytes = one.bytes; | |
177 | tot->rx_packets = one.packets; | |
178 | } | |
179 | rcu_read_unlock(); | |
6311cc44 | 180 | |
181 | return tot; | |
e314dbdc PE |
182 | } |
183 | ||
5c70ef85 G |
184 | /* fake multicast ability */ |
185 | static void veth_set_multicast_list(struct net_device *dev) | |
186 | { | |
187 | } | |
188 | ||
e314dbdc PE |
189 | static int veth_open(struct net_device *dev) |
190 | { | |
d0e2c55e ED |
191 | struct veth_priv *priv = netdev_priv(dev); |
192 | struct net_device *peer = rtnl_dereference(priv->peer); | |
e314dbdc | 193 | |
d0e2c55e | 194 | if (!peer) |
e314dbdc PE |
195 | return -ENOTCONN; |
196 | ||
d0e2c55e | 197 | if (peer->flags & IFF_UP) { |
e314dbdc | 198 | netif_carrier_on(dev); |
d0e2c55e | 199 | netif_carrier_on(peer); |
e314dbdc PE |
200 | } |
201 | return 0; | |
202 | } | |
203 | ||
2cf48a10 EB |
204 | static int veth_close(struct net_device *dev) |
205 | { | |
206 | struct veth_priv *priv = netdev_priv(dev); | |
2efd32ee | 207 | struct net_device *peer = rtnl_dereference(priv->peer); |
2cf48a10 EB |
208 | |
209 | netif_carrier_off(dev); | |
2efd32ee ED |
210 | if (peer) |
211 | netif_carrier_off(peer); | |
2cf48a10 EB |
212 | |
213 | return 0; | |
214 | } | |
215 | ||
91572088 | 216 | static int is_valid_veth_mtu(int mtu) |
38d40815 | 217 | { |
91572088 | 218 | return mtu >= ETH_MIN_MTU && mtu <= ETH_MAX_MTU; |
38d40815 EB |
219 | } |
220 | ||
e314dbdc PE |
221 | static int veth_dev_init(struct net_device *dev) |
222 | { | |
1c213bd2 | 223 | dev->vstats = netdev_alloc_pcpu_stats(struct pcpu_vstats); |
2681128f | 224 | if (!dev->vstats) |
e314dbdc | 225 | return -ENOMEM; |
e314dbdc PE |
226 | return 0; |
227 | } | |
228 | ||
11687a10 DM |
229 | static void veth_dev_free(struct net_device *dev) |
230 | { | |
2681128f | 231 | free_percpu(dev->vstats); |
11687a10 DM |
232 | free_netdev(dev); |
233 | } | |
234 | ||
bb446c19 WC |
235 | #ifdef CONFIG_NET_POLL_CONTROLLER |
236 | static void veth_poll_controller(struct net_device *dev) | |
237 | { | |
238 | /* veth only receives frames when its peer sends one | |
239 | * Since it's a synchronous operation, we are guaranteed | |
240 | * never to have pending data when we poll for it so | |
241 | * there is nothing to do here. | |
242 | * | |
243 | * We need this though so netpoll recognizes us as an interface that | |
244 | * supports polling, which enables bridge devices in virt setups to | |
245 | * still use netconsole | |
246 | */ | |
247 | } | |
248 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
249 | ||
a45253bf ND |
250 | static int veth_get_iflink(const struct net_device *dev) |
251 | { | |
252 | struct veth_priv *priv = netdev_priv(dev); | |
253 | struct net_device *peer; | |
254 | int iflink; | |
255 | ||
256 | rcu_read_lock(); | |
257 | peer = rcu_dereference(priv->peer); | |
258 | iflink = peer ? peer->ifindex : 0; | |
259 | rcu_read_unlock(); | |
260 | ||
261 | return iflink; | |
262 | } | |
263 | ||
163e5292 PA |
264 | static void veth_set_rx_headroom(struct net_device *dev, int new_hr) |
265 | { | |
266 | struct veth_priv *peer_priv, *priv = netdev_priv(dev); | |
267 | struct net_device *peer; | |
268 | ||
269 | if (new_hr < 0) | |
270 | new_hr = 0; | |
271 | ||
272 | rcu_read_lock(); | |
273 | peer = rcu_dereference(priv->peer); | |
274 | if (unlikely(!peer)) | |
275 | goto out; | |
276 | ||
277 | peer_priv = netdev_priv(peer); | |
278 | priv->requested_headroom = new_hr; | |
279 | new_hr = max(priv->requested_headroom, peer_priv->requested_headroom); | |
280 | dev->needed_headroom = new_hr; | |
281 | peer->needed_headroom = new_hr; | |
282 | ||
283 | out: | |
284 | rcu_read_unlock(); | |
285 | } | |
286 | ||
4456e7bd | 287 | static const struct net_device_ops veth_netdev_ops = { |
ee923623 DL |
288 | .ndo_init = veth_dev_init, |
289 | .ndo_open = veth_open, | |
2cf48a10 | 290 | .ndo_stop = veth_close, |
ee923623 | 291 | .ndo_start_xmit = veth_xmit, |
6311cc44 | 292 | .ndo_get_stats64 = veth_get_stats64, |
5c70ef85 | 293 | .ndo_set_rx_mode = veth_set_multicast_list, |
ee923623 | 294 | .ndo_set_mac_address = eth_mac_addr, |
bb446c19 WC |
295 | #ifdef CONFIG_NET_POLL_CONTROLLER |
296 | .ndo_poll_controller = veth_poll_controller, | |
297 | #endif | |
a45253bf | 298 | .ndo_get_iflink = veth_get_iflink, |
1a04a821 | 299 | .ndo_features_check = passthru_features_check, |
163e5292 | 300 | .ndo_set_rx_headroom = veth_set_rx_headroom, |
4456e7bd SH |
301 | }; |
302 | ||
732912d7 | 303 | #define VETH_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HW_CSUM | \ |
c80fafbb | 304 | NETIF_F_RXCSUM | NETIF_F_SCTP_CRC | NETIF_F_HIGHDMA | \ |
732912d7 | 305 | NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ENCAP_ALL | \ |
28d2b136 PM |
306 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | \ |
307 | NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_VLAN_STAG_RX ) | |
8093315a | 308 | |
e314dbdc PE |
309 | static void veth_setup(struct net_device *dev) |
310 | { | |
311 | ether_setup(dev); | |
312 | ||
550fd08c | 313 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
23ea5a96 | 314 | dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
02f01ec1 | 315 | dev->priv_flags |= IFF_NO_QUEUE; |
163e5292 | 316 | dev->priv_flags |= IFF_PHONY_HEADROOM; |
550fd08c | 317 | |
4456e7bd | 318 | dev->netdev_ops = &veth_netdev_ops; |
e314dbdc PE |
319 | dev->ethtool_ops = &veth_ethtool_ops; |
320 | dev->features |= NETIF_F_LLTX; | |
8093315a | 321 | dev->features |= VETH_FEATURES; |
8d0d21f4 | 322 | dev->vlan_features = dev->features & |
3f8c707b VY |
323 | ~(NETIF_F_HW_VLAN_CTAG_TX | |
324 | NETIF_F_HW_VLAN_STAG_TX | | |
325 | NETIF_F_HW_VLAN_CTAG_RX | | |
326 | NETIF_F_HW_VLAN_STAG_RX); | |
11687a10 | 327 | dev->destructor = veth_dev_free; |
91572088 | 328 | dev->max_mtu = ETH_MAX_MTU; |
a2c725fa | 329 | |
8093315a | 330 | dev->hw_features = VETH_FEATURES; |
82d81898 | 331 | dev->hw_enc_features = VETH_FEATURES; |
607fca9a | 332 | dev->mpls_features = NETIF_F_HW_CSUM | NETIF_F_GSO_SOFTWARE; |
e314dbdc PE |
333 | } |
334 | ||
335 | /* | |
336 | * netlink interface | |
337 | */ | |
338 | ||
339 | static int veth_validate(struct nlattr *tb[], struct nlattr *data[]) | |
340 | { | |
341 | if (tb[IFLA_ADDRESS]) { | |
342 | if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) | |
343 | return -EINVAL; | |
344 | if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) | |
345 | return -EADDRNOTAVAIL; | |
346 | } | |
38d40815 EB |
347 | if (tb[IFLA_MTU]) { |
348 | if (!is_valid_veth_mtu(nla_get_u32(tb[IFLA_MTU]))) | |
349 | return -EINVAL; | |
350 | } | |
e314dbdc PE |
351 | return 0; |
352 | } | |
353 | ||
354 | static struct rtnl_link_ops veth_link_ops; | |
355 | ||
81adee47 | 356 | static int veth_newlink(struct net *src_net, struct net_device *dev, |
e314dbdc PE |
357 | struct nlattr *tb[], struct nlattr *data[]) |
358 | { | |
359 | int err; | |
360 | struct net_device *peer; | |
361 | struct veth_priv *priv; | |
362 | char ifname[IFNAMSIZ]; | |
363 | struct nlattr *peer_tb[IFLA_MAX + 1], **tbp; | |
5517750f | 364 | unsigned char name_assign_type; |
3729d502 | 365 | struct ifinfomsg *ifmp; |
81adee47 | 366 | struct net *net; |
e314dbdc PE |
367 | |
368 | /* | |
369 | * create and register peer first | |
e314dbdc | 370 | */ |
e314dbdc PE |
371 | if (data != NULL && data[VETH_INFO_PEER] != NULL) { |
372 | struct nlattr *nla_peer; | |
373 | ||
374 | nla_peer = data[VETH_INFO_PEER]; | |
3729d502 | 375 | ifmp = nla_data(nla_peer); |
f7b12606 JP |
376 | err = rtnl_nla_parse_ifla(peer_tb, |
377 | nla_data(nla_peer) + sizeof(struct ifinfomsg), | |
378 | nla_len(nla_peer) - sizeof(struct ifinfomsg)); | |
e314dbdc PE |
379 | if (err < 0) |
380 | return err; | |
381 | ||
382 | err = veth_validate(peer_tb, NULL); | |
383 | if (err < 0) | |
384 | return err; | |
385 | ||
386 | tbp = peer_tb; | |
3729d502 PM |
387 | } else { |
388 | ifmp = NULL; | |
e314dbdc | 389 | tbp = tb; |
3729d502 | 390 | } |
e314dbdc | 391 | |
5517750f | 392 | if (tbp[IFLA_IFNAME]) { |
e314dbdc | 393 | nla_strlcpy(ifname, tbp[IFLA_IFNAME], IFNAMSIZ); |
5517750f TG |
394 | name_assign_type = NET_NAME_USER; |
395 | } else { | |
e314dbdc | 396 | snprintf(ifname, IFNAMSIZ, DRV_NAME "%%d"); |
5517750f TG |
397 | name_assign_type = NET_NAME_ENUM; |
398 | } | |
e314dbdc | 399 | |
81adee47 EB |
400 | net = rtnl_link_get_net(src_net, tbp); |
401 | if (IS_ERR(net)) | |
402 | return PTR_ERR(net); | |
403 | ||
5517750f TG |
404 | peer = rtnl_create_link(net, ifname, name_assign_type, |
405 | &veth_link_ops, tbp); | |
81adee47 EB |
406 | if (IS_ERR(peer)) { |
407 | put_net(net); | |
e314dbdc | 408 | return PTR_ERR(peer); |
81adee47 | 409 | } |
e314dbdc PE |
410 | |
411 | if (tbp[IFLA_ADDRESS] == NULL) | |
f2cedb63 | 412 | eth_hw_addr_random(peer); |
e6f8f1a7 PE |
413 | |
414 | if (ifmp && (dev->ifindex != 0)) | |
415 | peer->ifindex = ifmp->ifi_index; | |
e314dbdc PE |
416 | |
417 | err = register_netdevice(peer); | |
81adee47 EB |
418 | put_net(net); |
419 | net = NULL; | |
e314dbdc PE |
420 | if (err < 0) |
421 | goto err_register_peer; | |
422 | ||
423 | netif_carrier_off(peer); | |
424 | ||
3729d502 PM |
425 | err = rtnl_configure_link(peer, ifmp); |
426 | if (err < 0) | |
427 | goto err_configure_peer; | |
428 | ||
e314dbdc PE |
429 | /* |
430 | * register dev last | |
431 | * | |
432 | * note, that since we've registered new device the dev's name | |
433 | * should be re-allocated | |
434 | */ | |
435 | ||
436 | if (tb[IFLA_ADDRESS] == NULL) | |
f2cedb63 | 437 | eth_hw_addr_random(dev); |
e314dbdc | 438 | |
6c8c4446 JP |
439 | if (tb[IFLA_IFNAME]) |
440 | nla_strlcpy(dev->name, tb[IFLA_IFNAME], IFNAMSIZ); | |
441 | else | |
442 | snprintf(dev->name, IFNAMSIZ, DRV_NAME "%%d"); | |
443 | ||
e314dbdc PE |
444 | err = register_netdevice(dev); |
445 | if (err < 0) | |
446 | goto err_register_dev; | |
447 | ||
448 | netif_carrier_off(dev); | |
449 | ||
450 | /* | |
451 | * tie the deviced together | |
452 | */ | |
453 | ||
454 | priv = netdev_priv(dev); | |
d0e2c55e | 455 | rcu_assign_pointer(priv->peer, peer); |
e314dbdc PE |
456 | |
457 | priv = netdev_priv(peer); | |
d0e2c55e | 458 | rcu_assign_pointer(priv->peer, dev); |
e314dbdc PE |
459 | return 0; |
460 | ||
461 | err_register_dev: | |
462 | /* nothing to do */ | |
3729d502 | 463 | err_configure_peer: |
e314dbdc PE |
464 | unregister_netdevice(peer); |
465 | return err; | |
466 | ||
467 | err_register_peer: | |
468 | free_netdev(peer); | |
469 | return err; | |
470 | } | |
471 | ||
23289a37 | 472 | static void veth_dellink(struct net_device *dev, struct list_head *head) |
e314dbdc PE |
473 | { |
474 | struct veth_priv *priv; | |
475 | struct net_device *peer; | |
476 | ||
477 | priv = netdev_priv(dev); | |
d0e2c55e ED |
478 | peer = rtnl_dereference(priv->peer); |
479 | ||
480 | /* Note : dellink() is called from default_device_exit_batch(), | |
481 | * before a rcu_synchronize() point. The devices are guaranteed | |
482 | * not being freed before one RCU grace period. | |
483 | */ | |
484 | RCU_INIT_POINTER(priv->peer, NULL); | |
24540535 | 485 | unregister_netdevice_queue(dev, head); |
f45a5c26 ED |
486 | |
487 | if (peer) { | |
488 | priv = netdev_priv(peer); | |
489 | RCU_INIT_POINTER(priv->peer, NULL); | |
490 | unregister_netdevice_queue(peer, head); | |
491 | } | |
e314dbdc PE |
492 | } |
493 | ||
23711438 TG |
494 | static const struct nla_policy veth_policy[VETH_INFO_MAX + 1] = { |
495 | [VETH_INFO_PEER] = { .len = sizeof(struct ifinfomsg) }, | |
496 | }; | |
e314dbdc | 497 | |
e5f4e7b9 ND |
498 | static struct net *veth_get_link_net(const struct net_device *dev) |
499 | { | |
500 | struct veth_priv *priv = netdev_priv(dev); | |
501 | struct net_device *peer = rtnl_dereference(priv->peer); | |
502 | ||
503 | return peer ? dev_net(peer) : dev_net(dev); | |
504 | } | |
505 | ||
e314dbdc PE |
506 | static struct rtnl_link_ops veth_link_ops = { |
507 | .kind = DRV_NAME, | |
508 | .priv_size = sizeof(struct veth_priv), | |
509 | .setup = veth_setup, | |
510 | .validate = veth_validate, | |
511 | .newlink = veth_newlink, | |
512 | .dellink = veth_dellink, | |
513 | .policy = veth_policy, | |
514 | .maxtype = VETH_INFO_MAX, | |
e5f4e7b9 | 515 | .get_link_net = veth_get_link_net, |
e314dbdc PE |
516 | }; |
517 | ||
518 | /* | |
519 | * init/fini | |
520 | */ | |
521 | ||
522 | static __init int veth_init(void) | |
523 | { | |
524 | return rtnl_link_register(&veth_link_ops); | |
525 | } | |
526 | ||
527 | static __exit void veth_exit(void) | |
528 | { | |
68365458 | 529 | rtnl_link_unregister(&veth_link_ops); |
e314dbdc PE |
530 | } |
531 | ||
532 | module_init(veth_init); | |
533 | module_exit(veth_exit); | |
534 | ||
535 | MODULE_DESCRIPTION("Virtual Ethernet Tunnel"); | |
536 | MODULE_LICENSE("GPL v2"); | |
537 | MODULE_ALIAS_RTNL_LINK(DRV_NAME); |