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2ad7bf36 MB |
1 | /* Copyright (c) 2014 Mahesh Bandewar <maheshb@google.com> |
2 | * | |
3 | * This program is free software; you can redistribute it and/or | |
4 | * modify it under the terms of the GNU General Public License as | |
5 | * published by the Free Software Foundation; either version 2 of | |
6 | * the License, or (at your option) any later version. | |
7 | * | |
8 | */ | |
9 | ||
10 | #include "ipvlan.h" | |
11 | ||
3133822f FW |
12 | static unsigned int ipvlan_netid __read_mostly; |
13 | ||
14 | struct ipvlan_netns { | |
15 | unsigned int ipvl_nf_hook_refcnt; | |
16 | }; | |
4fbae7d8 MB |
17 | |
18 | static struct nf_hook_ops ipvl_nfops[] __read_mostly = { | |
19 | { | |
20 | .hook = ipvlan_nf_input, | |
21 | .pf = NFPROTO_IPV4, | |
22 | .hooknum = NF_INET_LOCAL_IN, | |
23 | .priority = INT_MAX, | |
24 | }, | |
25 | { | |
26 | .hook = ipvlan_nf_input, | |
27 | .pf = NFPROTO_IPV6, | |
28 | .hooknum = NF_INET_LOCAL_IN, | |
29 | .priority = INT_MAX, | |
30 | }, | |
31 | }; | |
32 | ||
ab530f63 | 33 | static const struct l3mdev_ops ipvl_l3mdev_ops = { |
4fbae7d8 MB |
34 | .l3mdev_l3_rcv = ipvlan_l3_rcv, |
35 | }; | |
36 | ||
ab5b7013 | 37 | static void ipvlan_adjust_mtu(struct ipvl_dev *ipvlan, struct net_device *dev) |
2ad7bf36 | 38 | { |
8f679ed8 | 39 | ipvlan->dev->mtu = dev->mtu; |
2ad7bf36 MB |
40 | } |
41 | ||
3133822f | 42 | static int ipvlan_register_nf_hook(struct net *net) |
4fbae7d8 | 43 | { |
3133822f | 44 | struct ipvlan_netns *vnet = net_generic(net, ipvlan_netid); |
4fbae7d8 MB |
45 | int err = 0; |
46 | ||
3133822f FW |
47 | if (!vnet->ipvl_nf_hook_refcnt) { |
48 | err = nf_register_net_hooks(net, ipvl_nfops, | |
49 | ARRAY_SIZE(ipvl_nfops)); | |
4fbae7d8 | 50 | if (!err) |
3133822f | 51 | vnet->ipvl_nf_hook_refcnt = 1; |
4fbae7d8 | 52 | } else { |
3133822f | 53 | vnet->ipvl_nf_hook_refcnt++; |
4fbae7d8 MB |
54 | } |
55 | ||
56 | return err; | |
57 | } | |
58 | ||
3133822f | 59 | static void ipvlan_unregister_nf_hook(struct net *net) |
4fbae7d8 | 60 | { |
3133822f FW |
61 | struct ipvlan_netns *vnet = net_generic(net, ipvlan_netid); |
62 | ||
63 | if (WARN_ON(!vnet->ipvl_nf_hook_refcnt)) | |
64 | return; | |
4fbae7d8 | 65 | |
3133822f FW |
66 | vnet->ipvl_nf_hook_refcnt--; |
67 | if (!vnet->ipvl_nf_hook_refcnt) | |
68 | nf_unregister_net_hooks(net, ipvl_nfops, | |
69 | ARRAY_SIZE(ipvl_nfops)); | |
4fbae7d8 MB |
70 | } |
71 | ||
72 | static int ipvlan_set_port_mode(struct ipvl_port *port, u16 nval) | |
2ad7bf36 MB |
73 | { |
74 | struct ipvl_dev *ipvlan; | |
4fbae7d8 MB |
75 | struct net_device *mdev = port->dev; |
76 | int err = 0; | |
2ad7bf36 | 77 | |
4fbae7d8 | 78 | ASSERT_RTNL(); |
2ad7bf36 | 79 | if (port->mode != nval) { |
4fbae7d8 MB |
80 | if (nval == IPVLAN_MODE_L3S) { |
81 | /* New mode is L3S */ | |
3133822f | 82 | err = ipvlan_register_nf_hook(read_pnet(&port->pnet)); |
4fbae7d8 MB |
83 | if (!err) { |
84 | mdev->l3mdev_ops = &ipvl_l3mdev_ops; | |
85 | mdev->priv_flags |= IFF_L3MDEV_MASTER; | |
86 | } else | |
87 | return err; | |
88 | } else if (port->mode == IPVLAN_MODE_L3S) { | |
89 | /* Old mode was L3S */ | |
90 | mdev->priv_flags &= ~IFF_L3MDEV_MASTER; | |
3133822f | 91 | ipvlan_unregister_nf_hook(read_pnet(&port->pnet)); |
4fbae7d8 MB |
92 | mdev->l3mdev_ops = NULL; |
93 | } | |
2ad7bf36 | 94 | list_for_each_entry(ipvlan, &port->ipvlans, pnode) { |
4fbae7d8 | 95 | if (nval == IPVLAN_MODE_L3 || nval == IPVLAN_MODE_L3S) |
2ad7bf36 MB |
96 | ipvlan->dev->flags |= IFF_NOARP; |
97 | else | |
98 | ipvlan->dev->flags &= ~IFF_NOARP; | |
99 | } | |
100 | port->mode = nval; | |
101 | } | |
4fbae7d8 | 102 | return err; |
2ad7bf36 MB |
103 | } |
104 | ||
105 | static int ipvlan_port_create(struct net_device *dev) | |
106 | { | |
107 | struct ipvl_port *port; | |
108 | int err, idx; | |
109 | ||
110 | if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) { | |
111 | netdev_err(dev, "Master is either lo or non-ether device\n"); | |
112 | return -EINVAL; | |
113 | } | |
764e433b | 114 | |
c3262d9d MB |
115 | if (netdev_is_rx_handler_busy(dev)) { |
116 | netdev_err(dev, "Device is already in use.\n"); | |
764e433b MB |
117 | return -EBUSY; |
118 | } | |
119 | ||
2ad7bf36 MB |
120 | port = kzalloc(sizeof(struct ipvl_port), GFP_KERNEL); |
121 | if (!port) | |
122 | return -ENOMEM; | |
123 | ||
3133822f | 124 | write_pnet(&port->pnet, dev_net(dev)); |
2ad7bf36 MB |
125 | port->dev = dev; |
126 | port->mode = IPVLAN_MODE_L3; | |
127 | INIT_LIST_HEAD(&port->ipvlans); | |
128 | for (idx = 0; idx < IPVLAN_HASH_SIZE; idx++) | |
129 | INIT_HLIST_HEAD(&port->hlhead[idx]); | |
130 | ||
ba35f858 MB |
131 | skb_queue_head_init(&port->backlog); |
132 | INIT_WORK(&port->wq, ipvlan_process_multicast); | |
009146d1 | 133 | ida_init(&port->ida); |
da36e13c | 134 | port->dev_id_start = 1; |
ba35f858 | 135 | |
2ad7bf36 MB |
136 | err = netdev_rx_handler_register(dev, ipvlan_handle_frame, port); |
137 | if (err) | |
138 | goto err; | |
139 | ||
140 | dev->priv_flags |= IFF_IPVLAN_MASTER; | |
141 | return 0; | |
142 | ||
143 | err: | |
48140a21 | 144 | kfree(port); |
2ad7bf36 MB |
145 | return err; |
146 | } | |
147 | ||
148 | static void ipvlan_port_destroy(struct net_device *dev) | |
149 | { | |
150 | struct ipvl_port *port = ipvlan_port_get_rtnl(dev); | |
b1227d01 | 151 | struct sk_buff *skb; |
2ad7bf36 MB |
152 | |
153 | dev->priv_flags &= ~IFF_IPVLAN_MASTER; | |
4fbae7d8 MB |
154 | if (port->mode == IPVLAN_MODE_L3S) { |
155 | dev->priv_flags &= ~IFF_L3MDEV_MASTER; | |
3133822f | 156 | ipvlan_unregister_nf_hook(dev_net(dev)); |
4fbae7d8 MB |
157 | dev->l3mdev_ops = NULL; |
158 | } | |
2ad7bf36 | 159 | netdev_rx_handler_unregister(dev); |
ba35f858 | 160 | cancel_work_sync(&port->wq); |
b1227d01 ED |
161 | while ((skb = __skb_dequeue(&port->backlog)) != NULL) { |
162 | if (skb->dev) | |
163 | dev_put(skb->dev); | |
164 | kfree_skb(skb); | |
165 | } | |
009146d1 | 166 | ida_destroy(&port->ida); |
48140a21 | 167 | kfree(port); |
2ad7bf36 MB |
168 | } |
169 | ||
2ad7bf36 | 170 | #define IPVLAN_FEATURES \ |
a188222b | 171 | (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \ |
2ad7bf36 MB |
172 | NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \ |
173 | NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \ | |
174 | NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER) | |
175 | ||
176 | #define IPVLAN_STATE_MASK \ | |
177 | ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT)) | |
178 | ||
2ad7bf36 MB |
179 | static int ipvlan_init(struct net_device *dev) |
180 | { | |
181 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
182 | const struct net_device *phy_dev = ipvlan->phy_dev; | |
494e8489 | 183 | struct ipvl_port *port = ipvlan->port; |
2ad7bf36 MB |
184 | |
185 | dev->state = (dev->state & ~IPVLAN_STATE_MASK) | | |
186 | (phy_dev->state & IPVLAN_STATE_MASK); | |
187 | dev->features = phy_dev->features & IPVLAN_FEATURES; | |
188 | dev->features |= NETIF_F_LLTX; | |
189 | dev->gso_max_size = phy_dev->gso_max_size; | |
f6773c5e | 190 | dev->gso_max_segs = phy_dev->gso_max_segs; |
2ad7bf36 MB |
191 | dev->hard_header_len = phy_dev->hard_header_len; |
192 | ||
0d7dd798 | 193 | netdev_lockdep_set_classes(dev); |
2ad7bf36 | 194 | |
87173cd6 | 195 | ipvlan->pcpu_stats = netdev_alloc_pcpu_stats(struct ipvl_pcpu_stats); |
2ad7bf36 MB |
196 | if (!ipvlan->pcpu_stats) |
197 | return -ENOMEM; | |
198 | ||
494e8489 MB |
199 | port->count += 1; |
200 | ||
2ad7bf36 MB |
201 | return 0; |
202 | } | |
203 | ||
204 | static void ipvlan_uninit(struct net_device *dev) | |
205 | { | |
206 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
207 | struct ipvl_port *port = ipvlan->port; | |
208 | ||
04901cea | 209 | free_percpu(ipvlan->pcpu_stats); |
2ad7bf36 MB |
210 | |
211 | port->count -= 1; | |
212 | if (!port->count) | |
213 | ipvlan_port_destroy(port->dev); | |
214 | } | |
215 | ||
216 | static int ipvlan_open(struct net_device *dev) | |
217 | { | |
218 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
219 | struct net_device *phy_dev = ipvlan->phy_dev; | |
220 | struct ipvl_addr *addr; | |
221 | ||
4fbae7d8 MB |
222 | if (ipvlan->port->mode == IPVLAN_MODE_L3 || |
223 | ipvlan->port->mode == IPVLAN_MODE_L3S) | |
2ad7bf36 MB |
224 | dev->flags |= IFF_NOARP; |
225 | else | |
226 | dev->flags &= ~IFF_NOARP; | |
227 | ||
515866f8 KK |
228 | list_for_each_entry(addr, &ipvlan->addrs, anode) |
229 | ipvlan_ht_addr_add(ipvlan, addr); | |
230 | ||
2ad7bf36 MB |
231 | return dev_uc_add(phy_dev, phy_dev->dev_addr); |
232 | } | |
233 | ||
234 | static int ipvlan_stop(struct net_device *dev) | |
235 | { | |
236 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
237 | struct net_device *phy_dev = ipvlan->phy_dev; | |
238 | struct ipvl_addr *addr; | |
239 | ||
240 | dev_uc_unsync(phy_dev, dev); | |
241 | dev_mc_unsync(phy_dev, dev); | |
242 | ||
243 | dev_uc_del(phy_dev, phy_dev->dev_addr); | |
244 | ||
515866f8 | 245 | list_for_each_entry(addr, &ipvlan->addrs, anode) |
6640e673 | 246 | ipvlan_ht_addr_del(addr); |
515866f8 | 247 | |
2ad7bf36 MB |
248 | return 0; |
249 | } | |
250 | ||
92c7b0de MB |
251 | static netdev_tx_t ipvlan_start_xmit(struct sk_buff *skb, |
252 | struct net_device *dev) | |
2ad7bf36 MB |
253 | { |
254 | const struct ipvl_dev *ipvlan = netdev_priv(dev); | |
255 | int skblen = skb->len; | |
256 | int ret; | |
257 | ||
258 | ret = ipvlan_queue_xmit(skb, dev); | |
259 | if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { | |
260 | struct ipvl_pcpu_stats *pcptr; | |
261 | ||
262 | pcptr = this_cpu_ptr(ipvlan->pcpu_stats); | |
263 | ||
264 | u64_stats_update_begin(&pcptr->syncp); | |
265 | pcptr->tx_pkts++; | |
266 | pcptr->tx_bytes += skblen; | |
267 | u64_stats_update_end(&pcptr->syncp); | |
268 | } else { | |
269 | this_cpu_inc(ipvlan->pcpu_stats->tx_drps); | |
270 | } | |
271 | return ret; | |
272 | } | |
273 | ||
274 | static netdev_features_t ipvlan_fix_features(struct net_device *dev, | |
275 | netdev_features_t features) | |
276 | { | |
277 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
278 | ||
279 | return features & (ipvlan->sfeatures | ~IPVLAN_FEATURES); | |
280 | } | |
281 | ||
282 | static void ipvlan_change_rx_flags(struct net_device *dev, int change) | |
283 | { | |
284 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
285 | struct net_device *phy_dev = ipvlan->phy_dev; | |
286 | ||
287 | if (change & IFF_ALLMULTI) | |
288 | dev_set_allmulti(phy_dev, dev->flags & IFF_ALLMULTI? 1 : -1); | |
289 | } | |
290 | ||
2ad7bf36 MB |
291 | static void ipvlan_set_multicast_mac_filter(struct net_device *dev) |
292 | { | |
293 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
294 | ||
295 | if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { | |
296 | bitmap_fill(ipvlan->mac_filters, IPVLAN_MAC_FILTER_SIZE); | |
297 | } else { | |
298 | struct netdev_hw_addr *ha; | |
299 | DECLARE_BITMAP(mc_filters, IPVLAN_MAC_FILTER_SIZE); | |
300 | ||
301 | bitmap_zero(mc_filters, IPVLAN_MAC_FILTER_SIZE); | |
302 | netdev_for_each_mc_addr(ha, dev) | |
303 | __set_bit(ipvlan_mac_hash(ha->addr), mc_filters); | |
304 | ||
f631c44b MB |
305 | /* Turn-on broadcast bit irrespective of address family, |
306 | * since broadcast is deferred to a work-queue, hence no | |
307 | * impact on fast-path processing. | |
308 | */ | |
309 | __set_bit(ipvlan_mac_hash(dev->broadcast), mc_filters); | |
310 | ||
2ad7bf36 MB |
311 | bitmap_copy(ipvlan->mac_filters, mc_filters, |
312 | IPVLAN_MAC_FILTER_SIZE); | |
313 | } | |
314 | dev_uc_sync(ipvlan->phy_dev, dev); | |
315 | dev_mc_sync(ipvlan->phy_dev, dev); | |
316 | } | |
317 | ||
bc1f4470 | 318 | static void ipvlan_get_stats64(struct net_device *dev, |
319 | struct rtnl_link_stats64 *s) | |
2ad7bf36 MB |
320 | { |
321 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
322 | ||
323 | if (ipvlan->pcpu_stats) { | |
324 | struct ipvl_pcpu_stats *pcptr; | |
325 | u64 rx_pkts, rx_bytes, rx_mcast, tx_pkts, tx_bytes; | |
326 | u32 rx_errs = 0, tx_drps = 0; | |
327 | u32 strt; | |
328 | int idx; | |
329 | ||
330 | for_each_possible_cpu(idx) { | |
331 | pcptr = per_cpu_ptr(ipvlan->pcpu_stats, idx); | |
332 | do { | |
333 | strt= u64_stats_fetch_begin_irq(&pcptr->syncp); | |
334 | rx_pkts = pcptr->rx_pkts; | |
335 | rx_bytes = pcptr->rx_bytes; | |
336 | rx_mcast = pcptr->rx_mcast; | |
337 | tx_pkts = pcptr->tx_pkts; | |
338 | tx_bytes = pcptr->tx_bytes; | |
339 | } while (u64_stats_fetch_retry_irq(&pcptr->syncp, | |
340 | strt)); | |
341 | ||
342 | s->rx_packets += rx_pkts; | |
343 | s->rx_bytes += rx_bytes; | |
344 | s->multicast += rx_mcast; | |
345 | s->tx_packets += tx_pkts; | |
346 | s->tx_bytes += tx_bytes; | |
347 | ||
348 | /* u32 values are updated without syncp protection. */ | |
349 | rx_errs += pcptr->rx_errs; | |
350 | tx_drps += pcptr->tx_drps; | |
351 | } | |
352 | s->rx_errors = rx_errs; | |
353 | s->rx_dropped = rx_errs; | |
354 | s->tx_dropped = tx_drps; | |
355 | } | |
2ad7bf36 MB |
356 | } |
357 | ||
358 | static int ipvlan_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) | |
359 | { | |
360 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
361 | struct net_device *phy_dev = ipvlan->phy_dev; | |
362 | ||
363 | return vlan_vid_add(phy_dev, proto, vid); | |
364 | } | |
365 | ||
366 | static int ipvlan_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, | |
367 | u16 vid) | |
368 | { | |
369 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
370 | struct net_device *phy_dev = ipvlan->phy_dev; | |
371 | ||
372 | vlan_vid_del(phy_dev, proto, vid); | |
373 | return 0; | |
374 | } | |
375 | ||
7c411658 ND |
376 | static int ipvlan_get_iflink(const struct net_device *dev) |
377 | { | |
378 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
379 | ||
380 | return ipvlan->phy_dev->ifindex; | |
381 | } | |
382 | ||
2ad7bf36 MB |
383 | static const struct net_device_ops ipvlan_netdev_ops = { |
384 | .ndo_init = ipvlan_init, | |
385 | .ndo_uninit = ipvlan_uninit, | |
386 | .ndo_open = ipvlan_open, | |
387 | .ndo_stop = ipvlan_stop, | |
388 | .ndo_start_xmit = ipvlan_start_xmit, | |
389 | .ndo_fix_features = ipvlan_fix_features, | |
390 | .ndo_change_rx_flags = ipvlan_change_rx_flags, | |
391 | .ndo_set_rx_mode = ipvlan_set_multicast_mac_filter, | |
392 | .ndo_get_stats64 = ipvlan_get_stats64, | |
393 | .ndo_vlan_rx_add_vid = ipvlan_vlan_rx_add_vid, | |
394 | .ndo_vlan_rx_kill_vid = ipvlan_vlan_rx_kill_vid, | |
7c411658 | 395 | .ndo_get_iflink = ipvlan_get_iflink, |
2ad7bf36 MB |
396 | }; |
397 | ||
398 | static int ipvlan_hard_header(struct sk_buff *skb, struct net_device *dev, | |
399 | unsigned short type, const void *daddr, | |
400 | const void *saddr, unsigned len) | |
401 | { | |
402 | const struct ipvl_dev *ipvlan = netdev_priv(dev); | |
403 | struct net_device *phy_dev = ipvlan->phy_dev; | |
404 | ||
405 | /* TODO Probably use a different field than dev_addr so that the | |
406 | * mac-address on the virtual device is portable and can be carried | |
407 | * while the packets use the mac-addr on the physical device. | |
408 | */ | |
409 | return dev_hard_header(skb, phy_dev, type, daddr, | |
410 | saddr ? : dev->dev_addr, len); | |
411 | } | |
412 | ||
413 | static const struct header_ops ipvlan_header_ops = { | |
414 | .create = ipvlan_hard_header, | |
2ad7bf36 MB |
415 | .parse = eth_header_parse, |
416 | .cache = eth_header_cache, | |
417 | .cache_update = eth_header_cache_update, | |
418 | }; | |
419 | ||
314d10d7 DD |
420 | static int ipvlan_ethtool_get_link_ksettings(struct net_device *dev, |
421 | struct ethtool_link_ksettings *cmd) | |
2ad7bf36 MB |
422 | { |
423 | const struct ipvl_dev *ipvlan = netdev_priv(dev); | |
424 | ||
314d10d7 | 425 | return __ethtool_get_link_ksettings(ipvlan->phy_dev, cmd); |
2ad7bf36 MB |
426 | } |
427 | ||
428 | static void ipvlan_ethtool_get_drvinfo(struct net_device *dev, | |
429 | struct ethtool_drvinfo *drvinfo) | |
430 | { | |
431 | strlcpy(drvinfo->driver, IPVLAN_DRV, sizeof(drvinfo->driver)); | |
432 | strlcpy(drvinfo->version, IPV_DRV_VER, sizeof(drvinfo->version)); | |
433 | } | |
434 | ||
435 | static u32 ipvlan_ethtool_get_msglevel(struct net_device *dev) | |
436 | { | |
437 | const struct ipvl_dev *ipvlan = netdev_priv(dev); | |
438 | ||
439 | return ipvlan->msg_enable; | |
440 | } | |
441 | ||
442 | static void ipvlan_ethtool_set_msglevel(struct net_device *dev, u32 value) | |
443 | { | |
444 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
445 | ||
446 | ipvlan->msg_enable = value; | |
447 | } | |
448 | ||
449 | static const struct ethtool_ops ipvlan_ethtool_ops = { | |
450 | .get_link = ethtool_op_get_link, | |
314d10d7 | 451 | .get_link_ksettings = ipvlan_ethtool_get_link_ksettings, |
2ad7bf36 MB |
452 | .get_drvinfo = ipvlan_ethtool_get_drvinfo, |
453 | .get_msglevel = ipvlan_ethtool_get_msglevel, | |
454 | .set_msglevel = ipvlan_ethtool_set_msglevel, | |
455 | }; | |
456 | ||
457 | static int ipvlan_nl_changelink(struct net_device *dev, | |
ad744b22 MS |
458 | struct nlattr *tb[], struct nlattr *data[], |
459 | struct netlink_ext_ack *extack) | |
2ad7bf36 MB |
460 | { |
461 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
462 | struct ipvl_port *port = ipvlan_port_get_rtnl(ipvlan->phy_dev); | |
4fbae7d8 | 463 | int err = 0; |
2ad7bf36 MB |
464 | |
465 | if (data && data[IFLA_IPVLAN_MODE]) { | |
466 | u16 nmode = nla_get_u16(data[IFLA_IPVLAN_MODE]); | |
467 | ||
4fbae7d8 | 468 | err = ipvlan_set_port_mode(port, nmode); |
2ad7bf36 | 469 | } |
4fbae7d8 | 470 | return err; |
2ad7bf36 MB |
471 | } |
472 | ||
473 | static size_t ipvlan_nl_getsize(const struct net_device *dev) | |
474 | { | |
475 | return (0 | |
476 | + nla_total_size(2) /* IFLA_IPVLAN_MODE */ | |
477 | ); | |
478 | } | |
479 | ||
a8b8a889 MS |
480 | static int ipvlan_nl_validate(struct nlattr *tb[], struct nlattr *data[], |
481 | struct netlink_ext_ack *extack) | |
2ad7bf36 MB |
482 | { |
483 | if (data && data[IFLA_IPVLAN_MODE]) { | |
484 | u16 mode = nla_get_u16(data[IFLA_IPVLAN_MODE]); | |
485 | ||
486 | if (mode < IPVLAN_MODE_L2 || mode >= IPVLAN_MODE_MAX) | |
487 | return -EINVAL; | |
488 | } | |
489 | return 0; | |
490 | } | |
491 | ||
492 | static int ipvlan_nl_fillinfo(struct sk_buff *skb, | |
493 | const struct net_device *dev) | |
494 | { | |
495 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
496 | struct ipvl_port *port = ipvlan_port_get_rtnl(ipvlan->phy_dev); | |
497 | int ret = -EINVAL; | |
498 | ||
499 | if (!port) | |
500 | goto err; | |
501 | ||
502 | ret = -EMSGSIZE; | |
503 | if (nla_put_u16(skb, IFLA_IPVLAN_MODE, port->mode)) | |
504 | goto err; | |
505 | ||
506 | return 0; | |
507 | ||
508 | err: | |
509 | return ret; | |
510 | } | |
511 | ||
235a9d89 | 512 | int ipvlan_link_new(struct net *src_net, struct net_device *dev, |
7a3f4a18 MS |
513 | struct nlattr *tb[], struct nlattr *data[], |
514 | struct netlink_ext_ack *extack) | |
2ad7bf36 MB |
515 | { |
516 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
517 | struct ipvl_port *port; | |
518 | struct net_device *phy_dev; | |
519 | int err; | |
e93fbc5a | 520 | u16 mode = IPVLAN_MODE_L3; |
147fd287 | 521 | bool create = false; |
2ad7bf36 MB |
522 | |
523 | if (!tb[IFLA_LINK]) | |
524 | return -EINVAL; | |
525 | ||
526 | phy_dev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); | |
527 | if (!phy_dev) | |
528 | return -ENODEV; | |
529 | ||
5933fea7 | 530 | if (netif_is_ipvlan(phy_dev)) { |
2ad7bf36 MB |
531 | struct ipvl_dev *tmp = netdev_priv(phy_dev); |
532 | ||
533 | phy_dev = tmp->phy_dev; | |
5933fea7 | 534 | } else if (!netif_is_ipvlan_port(phy_dev)) { |
2ad7bf36 MB |
535 | err = ipvlan_port_create(phy_dev); |
536 | if (err < 0) | |
537 | return err; | |
147fd287 | 538 | create = true; |
2ad7bf36 MB |
539 | } |
540 | ||
2ad7bf36 | 541 | if (data && data[IFLA_IPVLAN_MODE]) |
e93fbc5a | 542 | mode = nla_get_u16(data[IFLA_IPVLAN_MODE]); |
2ad7bf36 | 543 | |
e93fbc5a | 544 | port = ipvlan_port_get_rtnl(phy_dev); |
2ad7bf36 MB |
545 | ipvlan->phy_dev = phy_dev; |
546 | ipvlan->dev = dev; | |
547 | ipvlan->port = port; | |
548 | ipvlan->sfeatures = IPVLAN_FEATURES; | |
296d4856 | 549 | ipvlan_adjust_mtu(ipvlan, phy_dev); |
2ad7bf36 | 550 | INIT_LIST_HEAD(&ipvlan->addrs); |
2ad7bf36 | 551 | |
da36e13c MB |
552 | /* If the port-id base is at the MAX value, then wrap it around and |
553 | * begin from 0x1 again. This may be due to a busy system where lots | |
554 | * of slaves are getting created and deleted. | |
555 | */ | |
556 | if (port->dev_id_start == 0xFFFE) | |
557 | port->dev_id_start = 0x1; | |
558 | ||
009146d1 MB |
559 | /* Since L2 address is shared among all IPvlan slaves including |
560 | * master, use unique 16 bit dev-ids to diffentiate among them. | |
561 | * Assign IDs between 0x1 and 0xFFFE (used by the master) to each | |
562 | * slave link [see addrconf_ifid_eui48()]. | |
563 | */ | |
da36e13c MB |
564 | err = ida_simple_get(&port->ida, port->dev_id_start, 0xFFFE, |
565 | GFP_KERNEL); | |
019ec003 MB |
566 | if (err < 0) |
567 | err = ida_simple_get(&port->ida, 0x1, port->dev_id_start, | |
568 | GFP_KERNEL); | |
009146d1 MB |
569 | if (err < 0) |
570 | goto destroy_ipvlan_port; | |
571 | dev->dev_id = err; | |
da36e13c MB |
572 | /* Increment id-base to the next slot for the future assignment */ |
573 | port->dev_id_start = err + 1; | |
009146d1 | 574 | |
2ad7bf36 MB |
575 | /* TODO Probably put random address here to be presented to the |
576 | * world but keep using the physical-dev address for the outgoing | |
577 | * packets. | |
578 | */ | |
579 | memcpy(dev->dev_addr, phy_dev->dev_addr, ETH_ALEN); | |
580 | ||
581 | dev->priv_flags |= IFF_IPVLAN_SLAVE; | |
582 | ||
2ad7bf36 MB |
583 | err = register_netdevice(dev); |
584 | if (err < 0) | |
009146d1 | 585 | goto remove_ida; |
2ad7bf36 MB |
586 | |
587 | err = netdev_upper_dev_link(phy_dev, dev); | |
494e8489 | 588 | if (err) { |
147fd287 | 589 | goto unregister_netdev; |
494e8489 | 590 | } |
4fbae7d8 MB |
591 | err = ipvlan_set_port_mode(port, mode); |
592 | if (err) { | |
1a31cc86 | 593 | goto unlink_netdev; |
4fbae7d8 | 594 | } |
2ad7bf36 MB |
595 | |
596 | list_add_tail_rcu(&ipvlan->pnode, &port->ipvlans); | |
597 | netif_stacked_transfer_operstate(phy_dev, dev); | |
598 | return 0; | |
147fd287 | 599 | |
1a31cc86 GF |
600 | unlink_netdev: |
601 | netdev_upper_dev_unlink(phy_dev, dev); | |
147fd287 GF |
602 | unregister_netdev: |
603 | unregister_netdevice(dev); | |
009146d1 MB |
604 | remove_ida: |
605 | ida_simple_remove(&port->ida, dev->dev_id); | |
147fd287 GF |
606 | destroy_ipvlan_port: |
607 | if (create) | |
608 | ipvlan_port_destroy(phy_dev); | |
609 | return err; | |
2ad7bf36 | 610 | } |
235a9d89 | 611 | EXPORT_SYMBOL_GPL(ipvlan_link_new); |
2ad7bf36 | 612 | |
235a9d89 | 613 | void ipvlan_link_delete(struct net_device *dev, struct list_head *head) |
2ad7bf36 MB |
614 | { |
615 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
616 | struct ipvl_addr *addr, *next; | |
617 | ||
515866f8 | 618 | list_for_each_entry_safe(addr, next, &ipvlan->addrs, anode) { |
6640e673 | 619 | ipvlan_ht_addr_del(addr); |
515866f8 | 620 | list_del(&addr->anode); |
6a725497 | 621 | kfree_rcu(addr, rcu); |
2ad7bf36 | 622 | } |
515866f8 | 623 | |
009146d1 | 624 | ida_simple_remove(&ipvlan->port->ida, dev->dev_id); |
2ad7bf36 MB |
625 | list_del_rcu(&ipvlan->pnode); |
626 | unregister_netdevice_queue(dev, head); | |
627 | netdev_upper_dev_unlink(ipvlan->phy_dev, dev); | |
628 | } | |
235a9d89 | 629 | EXPORT_SYMBOL_GPL(ipvlan_link_delete); |
2ad7bf36 | 630 | |
235a9d89 | 631 | void ipvlan_link_setup(struct net_device *dev) |
2ad7bf36 MB |
632 | { |
633 | ether_setup(dev); | |
634 | ||
635 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); | |
bf485bcf | 636 | dev->priv_flags |= IFF_UNICAST_FLT | IFF_NO_QUEUE; |
2ad7bf36 | 637 | dev->netdev_ops = &ipvlan_netdev_ops; |
cf124db5 | 638 | dev->needs_free_netdev = true; |
2ad7bf36 MB |
639 | dev->header_ops = &ipvlan_header_ops; |
640 | dev->ethtool_ops = &ipvlan_ethtool_ops; | |
2ad7bf36 | 641 | } |
235a9d89 | 642 | EXPORT_SYMBOL_GPL(ipvlan_link_setup); |
2ad7bf36 MB |
643 | |
644 | static const struct nla_policy ipvlan_nl_policy[IFLA_IPVLAN_MAX + 1] = | |
645 | { | |
646 | [IFLA_IPVLAN_MODE] = { .type = NLA_U16 }, | |
647 | }; | |
648 | ||
649 | static struct rtnl_link_ops ipvlan_link_ops = { | |
650 | .kind = "ipvlan", | |
651 | .priv_size = sizeof(struct ipvl_dev), | |
652 | ||
2ad7bf36 MB |
653 | .setup = ipvlan_link_setup, |
654 | .newlink = ipvlan_link_new, | |
655 | .dellink = ipvlan_link_delete, | |
656 | }; | |
657 | ||
235a9d89 | 658 | int ipvlan_link_register(struct rtnl_link_ops *ops) |
2ad7bf36 | 659 | { |
235a9d89 SG |
660 | ops->get_size = ipvlan_nl_getsize; |
661 | ops->policy = ipvlan_nl_policy; | |
662 | ops->validate = ipvlan_nl_validate; | |
663 | ops->fill_info = ipvlan_nl_fillinfo; | |
664 | ops->changelink = ipvlan_nl_changelink; | |
665 | ops->maxtype = IFLA_IPVLAN_MAX; | |
2ad7bf36 MB |
666 | return rtnl_link_register(ops); |
667 | } | |
235a9d89 | 668 | EXPORT_SYMBOL_GPL(ipvlan_link_register); |
2ad7bf36 MB |
669 | |
670 | static int ipvlan_device_event(struct notifier_block *unused, | |
671 | unsigned long event, void *ptr) | |
672 | { | |
673 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); | |
674 | struct ipvl_dev *ipvlan, *next; | |
675 | struct ipvl_port *port; | |
676 | LIST_HEAD(lst_kill); | |
677 | ||
5933fea7 | 678 | if (!netif_is_ipvlan_port(dev)) |
2ad7bf36 MB |
679 | return NOTIFY_DONE; |
680 | ||
681 | port = ipvlan_port_get_rtnl(dev); | |
682 | ||
683 | switch (event) { | |
684 | case NETDEV_CHANGE: | |
685 | list_for_each_entry(ipvlan, &port->ipvlans, pnode) | |
686 | netif_stacked_transfer_operstate(ipvlan->phy_dev, | |
687 | ipvlan->dev); | |
688 | break; | |
689 | ||
3133822f FW |
690 | case NETDEV_REGISTER: { |
691 | struct net *oldnet, *newnet = dev_net(dev); | |
692 | struct ipvlan_netns *old_vnet; | |
693 | ||
694 | oldnet = read_pnet(&port->pnet); | |
695 | if (net_eq(newnet, oldnet)) | |
696 | break; | |
697 | ||
698 | write_pnet(&port->pnet, newnet); | |
699 | ||
700 | old_vnet = net_generic(oldnet, ipvlan_netid); | |
701 | if (!old_vnet->ipvl_nf_hook_refcnt) | |
702 | break; | |
703 | ||
704 | ipvlan_register_nf_hook(newnet); | |
705 | ipvlan_unregister_nf_hook(oldnet); | |
706 | break; | |
707 | } | |
2ad7bf36 MB |
708 | case NETDEV_UNREGISTER: |
709 | if (dev->reg_state != NETREG_UNREGISTERING) | |
710 | break; | |
711 | ||
712 | list_for_each_entry_safe(ipvlan, next, &port->ipvlans, | |
713 | pnode) | |
714 | ipvlan->dev->rtnl_link_ops->dellink(ipvlan->dev, | |
715 | &lst_kill); | |
716 | unregister_netdevice_many(&lst_kill); | |
717 | break; | |
718 | ||
719 | case NETDEV_FEAT_CHANGE: | |
720 | list_for_each_entry(ipvlan, &port->ipvlans, pnode) { | |
721 | ipvlan->dev->features = dev->features & IPVLAN_FEATURES; | |
722 | ipvlan->dev->gso_max_size = dev->gso_max_size; | |
f6773c5e | 723 | ipvlan->dev->gso_max_segs = dev->gso_max_segs; |
2ad7bf36 MB |
724 | netdev_features_change(ipvlan->dev); |
725 | } | |
726 | break; | |
727 | ||
728 | case NETDEV_CHANGEMTU: | |
729 | list_for_each_entry(ipvlan, &port->ipvlans, pnode) | |
730 | ipvlan_adjust_mtu(ipvlan, dev); | |
731 | break; | |
732 | ||
733 | case NETDEV_PRE_TYPE_CHANGE: | |
734 | /* Forbid underlying device to change its type. */ | |
735 | return NOTIFY_BAD; | |
736 | } | |
737 | return NOTIFY_DONE; | |
738 | } | |
739 | ||
86673982 | 740 | static int ipvlan_add_addr(struct ipvl_dev *ipvlan, void *iaddr, bool is_v6) |
2ad7bf36 MB |
741 | { |
742 | struct ipvl_addr *addr; | |
743 | ||
2ad7bf36 MB |
744 | addr = kzalloc(sizeof(struct ipvl_addr), GFP_ATOMIC); |
745 | if (!addr) | |
746 | return -ENOMEM; | |
747 | ||
748 | addr->master = ipvlan; | |
86673982 GF |
749 | if (is_v6) { |
750 | memcpy(&addr->ip6addr, iaddr, sizeof(struct in6_addr)); | |
751 | addr->atype = IPVL_IPV6; | |
752 | } else { | |
753 | memcpy(&addr->ip4addr, iaddr, sizeof(struct in_addr)); | |
754 | addr->atype = IPVL_IPV4; | |
755 | } | |
40891e8a | 756 | list_add_tail(&addr->anode, &ipvlan->addrs); |
515866f8 | 757 | |
27705f70 JB |
758 | /* If the interface is not up, the address will be added to the hash |
759 | * list by ipvlan_open. | |
760 | */ | |
761 | if (netif_running(ipvlan->dev)) | |
762 | ipvlan_ht_addr_add(ipvlan, addr); | |
2ad7bf36 MB |
763 | |
764 | return 0; | |
765 | } | |
766 | ||
86673982 | 767 | static void ipvlan_del_addr(struct ipvl_dev *ipvlan, void *iaddr, bool is_v6) |
2ad7bf36 MB |
768 | { |
769 | struct ipvl_addr *addr; | |
770 | ||
86673982 | 771 | addr = ipvlan_find_addr(ipvlan, iaddr, is_v6); |
2ad7bf36 MB |
772 | if (!addr) |
773 | return; | |
774 | ||
6640e673 | 775 | ipvlan_ht_addr_del(addr); |
40891e8a | 776 | list_del(&addr->anode); |
2ad7bf36 MB |
777 | kfree_rcu(addr, rcu); |
778 | ||
779 | return; | |
780 | } | |
781 | ||
86673982 GF |
782 | static int ipvlan_add_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr) |
783 | { | |
784 | if (ipvlan_addr_busy(ipvlan->port, ip6_addr, true)) { | |
785 | netif_err(ipvlan, ifup, ipvlan->dev, | |
786 | "Failed to add IPv6=%pI6c addr for %s intf\n", | |
787 | ip6_addr, ipvlan->dev->name); | |
788 | return -EINVAL; | |
789 | } | |
790 | ||
791 | return ipvlan_add_addr(ipvlan, ip6_addr, true); | |
792 | } | |
793 | ||
794 | static void ipvlan_del_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr) | |
795 | { | |
796 | return ipvlan_del_addr(ipvlan, ip6_addr, true); | |
797 | } | |
798 | ||
2ad7bf36 MB |
799 | static int ipvlan_addr6_event(struct notifier_block *unused, |
800 | unsigned long event, void *ptr) | |
801 | { | |
802 | struct inet6_ifaddr *if6 = (struct inet6_ifaddr *)ptr; | |
803 | struct net_device *dev = (struct net_device *)if6->idev->dev; | |
804 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
805 | ||
23a5a49c KK |
806 | /* FIXME IPv6 autoconf calls us from bh without RTNL */ |
807 | if (in_softirq()) | |
808 | return NOTIFY_DONE; | |
809 | ||
5933fea7 | 810 | if (!netif_is_ipvlan(dev)) |
2ad7bf36 MB |
811 | return NOTIFY_DONE; |
812 | ||
813 | if (!ipvlan || !ipvlan->port) | |
814 | return NOTIFY_DONE; | |
815 | ||
816 | switch (event) { | |
817 | case NETDEV_UP: | |
818 | if (ipvlan_add_addr6(ipvlan, &if6->addr)) | |
819 | return NOTIFY_BAD; | |
820 | break; | |
821 | ||
822 | case NETDEV_DOWN: | |
823 | ipvlan_del_addr6(ipvlan, &if6->addr); | |
824 | break; | |
825 | } | |
826 | ||
827 | return NOTIFY_OK; | |
828 | } | |
829 | ||
3ad7d246 KJ |
830 | static int ipvlan_addr6_validator_event(struct notifier_block *unused, |
831 | unsigned long event, void *ptr) | |
832 | { | |
833 | struct in6_validator_info *i6vi = (struct in6_validator_info *)ptr; | |
834 | struct net_device *dev = (struct net_device *)i6vi->i6vi_dev->dev; | |
835 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
836 | ||
837 | /* FIXME IPv6 autoconf calls us from bh without RTNL */ | |
838 | if (in_softirq()) | |
839 | return NOTIFY_DONE; | |
840 | ||
841 | if (!netif_is_ipvlan(dev)) | |
842 | return NOTIFY_DONE; | |
843 | ||
844 | if (!ipvlan || !ipvlan->port) | |
845 | return NOTIFY_DONE; | |
846 | ||
847 | switch (event) { | |
848 | case NETDEV_UP: | |
849 | if (ipvlan_addr_busy(ipvlan->port, &i6vi->i6vi_addr, true)) | |
850 | return notifier_from_errno(-EADDRINUSE); | |
851 | break; | |
852 | } | |
853 | ||
854 | return NOTIFY_OK; | |
855 | } | |
856 | ||
2ad7bf36 MB |
857 | static int ipvlan_add_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr) |
858 | { | |
e9997c29 | 859 | if (ipvlan_addr_busy(ipvlan->port, ip4_addr, false)) { |
2ad7bf36 MB |
860 | netif_err(ipvlan, ifup, ipvlan->dev, |
861 | "Failed to add IPv4=%pI4 on %s intf.\n", | |
862 | ip4_addr, ipvlan->dev->name); | |
863 | return -EINVAL; | |
864 | } | |
2ad7bf36 | 865 | |
86673982 | 866 | return ipvlan_add_addr(ipvlan, ip4_addr, false); |
2ad7bf36 MB |
867 | } |
868 | ||
869 | static void ipvlan_del_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr) | |
870 | { | |
86673982 | 871 | return ipvlan_del_addr(ipvlan, ip4_addr, false); |
2ad7bf36 MB |
872 | } |
873 | ||
874 | static int ipvlan_addr4_event(struct notifier_block *unused, | |
875 | unsigned long event, void *ptr) | |
876 | { | |
877 | struct in_ifaddr *if4 = (struct in_ifaddr *)ptr; | |
878 | struct net_device *dev = (struct net_device *)if4->ifa_dev->dev; | |
879 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
880 | struct in_addr ip4_addr; | |
881 | ||
5933fea7 | 882 | if (!netif_is_ipvlan(dev)) |
2ad7bf36 MB |
883 | return NOTIFY_DONE; |
884 | ||
885 | if (!ipvlan || !ipvlan->port) | |
886 | return NOTIFY_DONE; | |
887 | ||
888 | switch (event) { | |
889 | case NETDEV_UP: | |
890 | ip4_addr.s_addr = if4->ifa_address; | |
891 | if (ipvlan_add_addr4(ipvlan, &ip4_addr)) | |
892 | return NOTIFY_BAD; | |
893 | break; | |
894 | ||
895 | case NETDEV_DOWN: | |
896 | ip4_addr.s_addr = if4->ifa_address; | |
897 | ipvlan_del_addr4(ipvlan, &ip4_addr); | |
898 | break; | |
899 | } | |
900 | ||
901 | return NOTIFY_OK; | |
902 | } | |
903 | ||
3ad7d246 KJ |
904 | static int ipvlan_addr4_validator_event(struct notifier_block *unused, |
905 | unsigned long event, void *ptr) | |
906 | { | |
907 | struct in_validator_info *ivi = (struct in_validator_info *)ptr; | |
908 | struct net_device *dev = (struct net_device *)ivi->ivi_dev->dev; | |
909 | struct ipvl_dev *ipvlan = netdev_priv(dev); | |
910 | ||
911 | if (!netif_is_ipvlan(dev)) | |
912 | return NOTIFY_DONE; | |
913 | ||
914 | if (!ipvlan || !ipvlan->port) | |
915 | return NOTIFY_DONE; | |
916 | ||
917 | switch (event) { | |
918 | case NETDEV_UP: | |
919 | if (ipvlan_addr_busy(ipvlan->port, &ivi->ivi_addr, false)) | |
920 | return notifier_from_errno(-EADDRINUSE); | |
921 | break; | |
922 | } | |
923 | ||
924 | return NOTIFY_OK; | |
925 | } | |
926 | ||
2ad7bf36 MB |
927 | static struct notifier_block ipvlan_addr4_notifier_block __read_mostly = { |
928 | .notifier_call = ipvlan_addr4_event, | |
929 | }; | |
930 | ||
3ad7d246 KJ |
931 | static struct notifier_block ipvlan_addr4_vtor_notifier_block __read_mostly = { |
932 | .notifier_call = ipvlan_addr4_validator_event, | |
933 | }; | |
934 | ||
2ad7bf36 MB |
935 | static struct notifier_block ipvlan_notifier_block __read_mostly = { |
936 | .notifier_call = ipvlan_device_event, | |
937 | }; | |
938 | ||
939 | static struct notifier_block ipvlan_addr6_notifier_block __read_mostly = { | |
940 | .notifier_call = ipvlan_addr6_event, | |
941 | }; | |
942 | ||
3ad7d246 KJ |
943 | static struct notifier_block ipvlan_addr6_vtor_notifier_block __read_mostly = { |
944 | .notifier_call = ipvlan_addr6_validator_event, | |
945 | }; | |
946 | ||
3133822f FW |
947 | static void ipvlan_ns_exit(struct net *net) |
948 | { | |
949 | struct ipvlan_netns *vnet = net_generic(net, ipvlan_netid); | |
950 | ||
951 | if (WARN_ON_ONCE(vnet->ipvl_nf_hook_refcnt)) { | |
952 | vnet->ipvl_nf_hook_refcnt = 0; | |
953 | nf_unregister_net_hooks(net, ipvl_nfops, | |
954 | ARRAY_SIZE(ipvl_nfops)); | |
955 | } | |
956 | } | |
957 | ||
958 | static struct pernet_operations ipvlan_net_ops = { | |
959 | .id = &ipvlan_netid, | |
960 | .size = sizeof(struct ipvlan_netns), | |
961 | .exit = ipvlan_ns_exit, | |
962 | }; | |
963 | ||
2ad7bf36 MB |
964 | static int __init ipvlan_init_module(void) |
965 | { | |
966 | int err; | |
967 | ||
968 | ipvlan_init_secret(); | |
969 | register_netdevice_notifier(&ipvlan_notifier_block); | |
970 | register_inet6addr_notifier(&ipvlan_addr6_notifier_block); | |
3ad7d246 KJ |
971 | register_inet6addr_validator_notifier( |
972 | &ipvlan_addr6_vtor_notifier_block); | |
2ad7bf36 | 973 | register_inetaddr_notifier(&ipvlan_addr4_notifier_block); |
3ad7d246 | 974 | register_inetaddr_validator_notifier(&ipvlan_addr4_vtor_notifier_block); |
2ad7bf36 | 975 | |
3133822f | 976 | err = register_pernet_subsys(&ipvlan_net_ops); |
2ad7bf36 MB |
977 | if (err < 0) |
978 | goto error; | |
979 | ||
3133822f FW |
980 | err = ipvlan_link_register(&ipvlan_link_ops); |
981 | if (err < 0) { | |
982 | unregister_pernet_subsys(&ipvlan_net_ops); | |
983 | goto error; | |
984 | } | |
985 | ||
2ad7bf36 MB |
986 | return 0; |
987 | error: | |
988 | unregister_inetaddr_notifier(&ipvlan_addr4_notifier_block); | |
3ad7d246 KJ |
989 | unregister_inetaddr_validator_notifier( |
990 | &ipvlan_addr4_vtor_notifier_block); | |
2ad7bf36 | 991 | unregister_inet6addr_notifier(&ipvlan_addr6_notifier_block); |
3ad7d246 KJ |
992 | unregister_inet6addr_validator_notifier( |
993 | &ipvlan_addr6_vtor_notifier_block); | |
2ad7bf36 MB |
994 | unregister_netdevice_notifier(&ipvlan_notifier_block); |
995 | return err; | |
996 | } | |
997 | ||
998 | static void __exit ipvlan_cleanup_module(void) | |
999 | { | |
1000 | rtnl_link_unregister(&ipvlan_link_ops); | |
3133822f | 1001 | unregister_pernet_subsys(&ipvlan_net_ops); |
2ad7bf36 MB |
1002 | unregister_netdevice_notifier(&ipvlan_notifier_block); |
1003 | unregister_inetaddr_notifier(&ipvlan_addr4_notifier_block); | |
3ad7d246 KJ |
1004 | unregister_inetaddr_validator_notifier( |
1005 | &ipvlan_addr4_vtor_notifier_block); | |
2ad7bf36 | 1006 | unregister_inet6addr_notifier(&ipvlan_addr6_notifier_block); |
3ad7d246 KJ |
1007 | unregister_inet6addr_validator_notifier( |
1008 | &ipvlan_addr6_vtor_notifier_block); | |
2ad7bf36 MB |
1009 | } |
1010 | ||
1011 | module_init(ipvlan_init_module); | |
1012 | module_exit(ipvlan_cleanup_module); | |
1013 | ||
1014 | MODULE_LICENSE("GPL"); | |
1015 | MODULE_AUTHOR("Mahesh Bandewar <maheshb@google.com>"); | |
1016 | MODULE_DESCRIPTION("Driver for L3 (IPv6/IPv4) based VLANs"); | |
1017 | MODULE_ALIAS_RTNL_LINK("ipvlan"); |