1 /* Copyright (c) 2014 Mahesh Bandewar <maheshb@google.com>
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.
12 static void ipvlan_adjust_mtu(struct ipvl_dev *ipvlan, struct net_device *dev)
14 ipvlan->dev->mtu = dev->mtu - ipvlan->mtu_adj;
17 static void ipvlan_set_port_mode(struct ipvl_port *port, u16 nval)
19 struct ipvl_dev *ipvlan;
21 if (port->mode != nval) {
22 list_for_each_entry(ipvlan, &port->ipvlans, pnode) {
23 if (nval == IPVLAN_MODE_L3)
24 ipvlan->dev->flags |= IFF_NOARP;
26 ipvlan->dev->flags &= ~IFF_NOARP;
32 static int ipvlan_port_create(struct net_device *dev)
34 struct ipvl_port *port;
37 if (dev->type != ARPHRD_ETHER || dev->flags & IFF_LOOPBACK) {
38 netdev_err(dev, "Master is either lo or non-ether device\n");
42 if (netif_is_macvlan_port(dev)) {
43 netdev_err(dev, "Master is a macvlan port.\n");
47 port = kzalloc(sizeof(struct ipvl_port), GFP_KERNEL);
52 port->mode = IPVLAN_MODE_L3;
53 INIT_LIST_HEAD(&port->ipvlans);
54 for (idx = 0; idx < IPVLAN_HASH_SIZE; idx++)
55 INIT_HLIST_HEAD(&port->hlhead[idx]);
57 skb_queue_head_init(&port->backlog);
58 INIT_WORK(&port->wq, ipvlan_process_multicast);
60 err = netdev_rx_handler_register(dev, ipvlan_handle_frame, port);
64 dev->priv_flags |= IFF_IPVLAN_MASTER;
72 static void ipvlan_port_destroy(struct net_device *dev)
74 struct ipvl_port *port = ipvlan_port_get_rtnl(dev);
76 dev->priv_flags &= ~IFF_IPVLAN_MASTER;
77 netdev_rx_handler_unregister(dev);
78 cancel_work_sync(&port->wq);
79 __skb_queue_purge(&port->backlog);
83 /* ipvlan network devices have devices nesting below it and are a special
84 * "super class" of normal network devices; split their locks off into a
85 * separate class since they always nest.
87 static struct lock_class_key ipvlan_netdev_xmit_lock_key;
88 static struct lock_class_key ipvlan_netdev_addr_lock_key;
90 #define IPVLAN_FEATURES \
91 (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \
92 NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \
93 NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \
94 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER)
96 #define IPVLAN_STATE_MASK \
97 ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT))
99 static void ipvlan_set_lockdep_class_one(struct net_device *dev,
100 struct netdev_queue *txq,
103 lockdep_set_class(&txq->_xmit_lock, &ipvlan_netdev_xmit_lock_key);
106 static void ipvlan_set_lockdep_class(struct net_device *dev)
108 lockdep_set_class(&dev->addr_list_lock, &ipvlan_netdev_addr_lock_key);
109 netdev_for_each_tx_queue(dev, ipvlan_set_lockdep_class_one, NULL);
112 static int ipvlan_init(struct net_device *dev)
114 struct ipvl_dev *ipvlan = netdev_priv(dev);
115 const struct net_device *phy_dev = ipvlan->phy_dev;
116 struct ipvl_port *port = ipvlan->port;
118 dev->state = (dev->state & ~IPVLAN_STATE_MASK) |
119 (phy_dev->state & IPVLAN_STATE_MASK);
120 dev->features = phy_dev->features & IPVLAN_FEATURES;
121 dev->features |= NETIF_F_LLTX;
122 dev->gso_max_size = phy_dev->gso_max_size;
123 dev->gso_max_segs = phy_dev->gso_max_segs;
124 dev->hard_header_len = phy_dev->hard_header_len;
126 ipvlan_set_lockdep_class(dev);
128 ipvlan->pcpu_stats = alloc_percpu(struct ipvl_pcpu_stats);
129 if (!ipvlan->pcpu_stats)
137 static void ipvlan_uninit(struct net_device *dev)
139 struct ipvl_dev *ipvlan = netdev_priv(dev);
140 struct ipvl_port *port = ipvlan->port;
142 free_percpu(ipvlan->pcpu_stats);
146 ipvlan_port_destroy(port->dev);
149 static int ipvlan_open(struct net_device *dev)
151 struct ipvl_dev *ipvlan = netdev_priv(dev);
152 struct net_device *phy_dev = ipvlan->phy_dev;
153 struct ipvl_addr *addr;
155 if (ipvlan->port->mode == IPVLAN_MODE_L3)
156 dev->flags |= IFF_NOARP;
158 dev->flags &= ~IFF_NOARP;
160 list_for_each_entry(addr, &ipvlan->addrs, anode)
161 ipvlan_ht_addr_add(ipvlan, addr);
163 return dev_uc_add(phy_dev, phy_dev->dev_addr);
166 static int ipvlan_stop(struct net_device *dev)
168 struct ipvl_dev *ipvlan = netdev_priv(dev);
169 struct net_device *phy_dev = ipvlan->phy_dev;
170 struct ipvl_addr *addr;
172 dev_uc_unsync(phy_dev, dev);
173 dev_mc_unsync(phy_dev, dev);
175 dev_uc_del(phy_dev, phy_dev->dev_addr);
177 list_for_each_entry(addr, &ipvlan->addrs, anode)
178 ipvlan_ht_addr_del(addr);
183 static netdev_tx_t ipvlan_start_xmit(struct sk_buff *skb,
184 struct net_device *dev)
186 const struct ipvl_dev *ipvlan = netdev_priv(dev);
187 int skblen = skb->len;
190 ret = ipvlan_queue_xmit(skb, dev);
191 if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
192 struct ipvl_pcpu_stats *pcptr;
194 pcptr = this_cpu_ptr(ipvlan->pcpu_stats);
196 u64_stats_update_begin(&pcptr->syncp);
198 pcptr->tx_bytes += skblen;
199 u64_stats_update_end(&pcptr->syncp);
201 this_cpu_inc(ipvlan->pcpu_stats->tx_drps);
206 static netdev_features_t ipvlan_fix_features(struct net_device *dev,
207 netdev_features_t features)
209 struct ipvl_dev *ipvlan = netdev_priv(dev);
211 return features & (ipvlan->sfeatures | ~IPVLAN_FEATURES);
214 static void ipvlan_change_rx_flags(struct net_device *dev, int change)
216 struct ipvl_dev *ipvlan = netdev_priv(dev);
217 struct net_device *phy_dev = ipvlan->phy_dev;
219 if (change & IFF_ALLMULTI)
220 dev_set_allmulti(phy_dev, dev->flags & IFF_ALLMULTI? 1 : -1);
223 static void ipvlan_set_multicast_mac_filter(struct net_device *dev)
225 struct ipvl_dev *ipvlan = netdev_priv(dev);
227 if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
228 bitmap_fill(ipvlan->mac_filters, IPVLAN_MAC_FILTER_SIZE);
230 struct netdev_hw_addr *ha;
231 DECLARE_BITMAP(mc_filters, IPVLAN_MAC_FILTER_SIZE);
233 bitmap_zero(mc_filters, IPVLAN_MAC_FILTER_SIZE);
234 netdev_for_each_mc_addr(ha, dev)
235 __set_bit(ipvlan_mac_hash(ha->addr), mc_filters);
237 /* Turn-on broadcast bit irrespective of address family,
238 * since broadcast is deferred to a work-queue, hence no
239 * impact on fast-path processing.
241 __set_bit(ipvlan_mac_hash(dev->broadcast), mc_filters);
243 bitmap_copy(ipvlan->mac_filters, mc_filters,
244 IPVLAN_MAC_FILTER_SIZE);
246 dev_uc_sync(ipvlan->phy_dev, dev);
247 dev_mc_sync(ipvlan->phy_dev, dev);
250 static struct rtnl_link_stats64 *ipvlan_get_stats64(struct net_device *dev,
251 struct rtnl_link_stats64 *s)
253 struct ipvl_dev *ipvlan = netdev_priv(dev);
255 if (ipvlan->pcpu_stats) {
256 struct ipvl_pcpu_stats *pcptr;
257 u64 rx_pkts, rx_bytes, rx_mcast, tx_pkts, tx_bytes;
258 u32 rx_errs = 0, tx_drps = 0;
262 for_each_possible_cpu(idx) {
263 pcptr = per_cpu_ptr(ipvlan->pcpu_stats, idx);
265 strt= u64_stats_fetch_begin_irq(&pcptr->syncp);
266 rx_pkts = pcptr->rx_pkts;
267 rx_bytes = pcptr->rx_bytes;
268 rx_mcast = pcptr->rx_mcast;
269 tx_pkts = pcptr->tx_pkts;
270 tx_bytes = pcptr->tx_bytes;
271 } while (u64_stats_fetch_retry_irq(&pcptr->syncp,
274 s->rx_packets += rx_pkts;
275 s->rx_bytes += rx_bytes;
276 s->multicast += rx_mcast;
277 s->tx_packets += tx_pkts;
278 s->tx_bytes += tx_bytes;
280 /* u32 values are updated without syncp protection. */
281 rx_errs += pcptr->rx_errs;
282 tx_drps += pcptr->tx_drps;
284 s->rx_errors = rx_errs;
285 s->rx_dropped = rx_errs;
286 s->tx_dropped = tx_drps;
291 static int ipvlan_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
293 struct ipvl_dev *ipvlan = netdev_priv(dev);
294 struct net_device *phy_dev = ipvlan->phy_dev;
296 return vlan_vid_add(phy_dev, proto, vid);
299 static int ipvlan_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
302 struct ipvl_dev *ipvlan = netdev_priv(dev);
303 struct net_device *phy_dev = ipvlan->phy_dev;
305 vlan_vid_del(phy_dev, proto, vid);
309 static int ipvlan_get_iflink(const struct net_device *dev)
311 struct ipvl_dev *ipvlan = netdev_priv(dev);
313 return ipvlan->phy_dev->ifindex;
316 static const struct net_device_ops ipvlan_netdev_ops = {
317 .ndo_init = ipvlan_init,
318 .ndo_uninit = ipvlan_uninit,
319 .ndo_open = ipvlan_open,
320 .ndo_stop = ipvlan_stop,
321 .ndo_start_xmit = ipvlan_start_xmit,
322 .ndo_fix_features = ipvlan_fix_features,
323 .ndo_change_rx_flags = ipvlan_change_rx_flags,
324 .ndo_set_rx_mode = ipvlan_set_multicast_mac_filter,
325 .ndo_get_stats64 = ipvlan_get_stats64,
326 .ndo_vlan_rx_add_vid = ipvlan_vlan_rx_add_vid,
327 .ndo_vlan_rx_kill_vid = ipvlan_vlan_rx_kill_vid,
328 .ndo_get_iflink = ipvlan_get_iflink,
331 static int ipvlan_hard_header(struct sk_buff *skb, struct net_device *dev,
332 unsigned short type, const void *daddr,
333 const void *saddr, unsigned len)
335 const struct ipvl_dev *ipvlan = netdev_priv(dev);
336 struct net_device *phy_dev = ipvlan->phy_dev;
338 /* TODO Probably use a different field than dev_addr so that the
339 * mac-address on the virtual device is portable and can be carried
340 * while the packets use the mac-addr on the physical device.
342 return dev_hard_header(skb, phy_dev, type, daddr,
343 saddr ? : dev->dev_addr, len);
346 static const struct header_ops ipvlan_header_ops = {
347 .create = ipvlan_hard_header,
348 .parse = eth_header_parse,
349 .cache = eth_header_cache,
350 .cache_update = eth_header_cache_update,
353 static int ipvlan_ethtool_get_link_ksettings(struct net_device *dev,
354 struct ethtool_link_ksettings *cmd)
356 const struct ipvl_dev *ipvlan = netdev_priv(dev);
358 return __ethtool_get_link_ksettings(ipvlan->phy_dev, cmd);
361 static void ipvlan_ethtool_get_drvinfo(struct net_device *dev,
362 struct ethtool_drvinfo *drvinfo)
364 strlcpy(drvinfo->driver, IPVLAN_DRV, sizeof(drvinfo->driver));
365 strlcpy(drvinfo->version, IPV_DRV_VER, sizeof(drvinfo->version));
368 static u32 ipvlan_ethtool_get_msglevel(struct net_device *dev)
370 const struct ipvl_dev *ipvlan = netdev_priv(dev);
372 return ipvlan->msg_enable;
375 static void ipvlan_ethtool_set_msglevel(struct net_device *dev, u32 value)
377 struct ipvl_dev *ipvlan = netdev_priv(dev);
379 ipvlan->msg_enable = value;
382 static const struct ethtool_ops ipvlan_ethtool_ops = {
383 .get_link = ethtool_op_get_link,
384 .get_link_ksettings = ipvlan_ethtool_get_link_ksettings,
385 .get_drvinfo = ipvlan_ethtool_get_drvinfo,
386 .get_msglevel = ipvlan_ethtool_get_msglevel,
387 .set_msglevel = ipvlan_ethtool_set_msglevel,
390 static int ipvlan_nl_changelink(struct net_device *dev,
391 struct nlattr *tb[], struct nlattr *data[])
393 struct ipvl_dev *ipvlan = netdev_priv(dev);
394 struct ipvl_port *port = ipvlan_port_get_rtnl(ipvlan->phy_dev);
396 if (data && data[IFLA_IPVLAN_MODE]) {
397 u16 nmode = nla_get_u16(data[IFLA_IPVLAN_MODE]);
399 ipvlan_set_port_mode(port, nmode);
404 static size_t ipvlan_nl_getsize(const struct net_device *dev)
407 + nla_total_size(2) /* IFLA_IPVLAN_MODE */
411 static int ipvlan_nl_validate(struct nlattr *tb[], struct nlattr *data[])
413 if (data && data[IFLA_IPVLAN_MODE]) {
414 u16 mode = nla_get_u16(data[IFLA_IPVLAN_MODE]);
416 if (mode < IPVLAN_MODE_L2 || mode >= IPVLAN_MODE_MAX)
422 static int ipvlan_nl_fillinfo(struct sk_buff *skb,
423 const struct net_device *dev)
425 struct ipvl_dev *ipvlan = netdev_priv(dev);
426 struct ipvl_port *port = ipvlan_port_get_rtnl(ipvlan->phy_dev);
433 if (nla_put_u16(skb, IFLA_IPVLAN_MODE, port->mode))
442 static int ipvlan_link_new(struct net *src_net, struct net_device *dev,
443 struct nlattr *tb[], struct nlattr *data[])
445 struct ipvl_dev *ipvlan = netdev_priv(dev);
446 struct ipvl_port *port;
447 struct net_device *phy_dev;
449 u16 mode = IPVLAN_MODE_L3;
454 phy_dev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK]));
458 if (netif_is_ipvlan(phy_dev)) {
459 struct ipvl_dev *tmp = netdev_priv(phy_dev);
461 phy_dev = tmp->phy_dev;
462 } else if (!netif_is_ipvlan_port(phy_dev)) {
463 err = ipvlan_port_create(phy_dev);
468 if (data && data[IFLA_IPVLAN_MODE])
469 mode = nla_get_u16(data[IFLA_IPVLAN_MODE]);
471 port = ipvlan_port_get_rtnl(phy_dev);
472 ipvlan->phy_dev = phy_dev;
475 ipvlan->sfeatures = IPVLAN_FEATURES;
476 ipvlan_adjust_mtu(ipvlan, phy_dev);
477 INIT_LIST_HEAD(&ipvlan->addrs);
479 /* TODO Probably put random address here to be presented to the
480 * world but keep using the physical-dev address for the outgoing
483 memcpy(dev->dev_addr, phy_dev->dev_addr, ETH_ALEN);
485 dev->priv_flags |= IFF_IPVLAN_SLAVE;
487 err = register_netdevice(dev);
491 err = netdev_upper_dev_link(phy_dev, dev);
493 unregister_netdevice(dev);
497 list_add_tail_rcu(&ipvlan->pnode, &port->ipvlans);
498 ipvlan_set_port_mode(port, mode);
500 netif_stacked_transfer_operstate(phy_dev, dev);
504 static void ipvlan_link_delete(struct net_device *dev, struct list_head *head)
506 struct ipvl_dev *ipvlan = netdev_priv(dev);
507 struct ipvl_addr *addr, *next;
509 list_for_each_entry_safe(addr, next, &ipvlan->addrs, anode) {
510 ipvlan_ht_addr_del(addr);
511 list_del(&addr->anode);
512 kfree_rcu(addr, rcu);
515 list_del_rcu(&ipvlan->pnode);
516 unregister_netdevice_queue(dev, head);
517 netdev_upper_dev_unlink(ipvlan->phy_dev, dev);
520 static void ipvlan_link_setup(struct net_device *dev)
524 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
525 dev->priv_flags |= IFF_UNICAST_FLT | IFF_NO_QUEUE;
526 dev->netdev_ops = &ipvlan_netdev_ops;
527 dev->destructor = free_netdev;
528 dev->header_ops = &ipvlan_header_ops;
529 dev->ethtool_ops = &ipvlan_ethtool_ops;
532 static const struct nla_policy ipvlan_nl_policy[IFLA_IPVLAN_MAX + 1] =
534 [IFLA_IPVLAN_MODE] = { .type = NLA_U16 },
537 static struct rtnl_link_ops ipvlan_link_ops = {
539 .priv_size = sizeof(struct ipvl_dev),
541 .get_size = ipvlan_nl_getsize,
542 .policy = ipvlan_nl_policy,
543 .validate = ipvlan_nl_validate,
544 .fill_info = ipvlan_nl_fillinfo,
545 .changelink = ipvlan_nl_changelink,
546 .maxtype = IFLA_IPVLAN_MAX,
548 .setup = ipvlan_link_setup,
549 .newlink = ipvlan_link_new,
550 .dellink = ipvlan_link_delete,
553 static int ipvlan_link_register(struct rtnl_link_ops *ops)
555 return rtnl_link_register(ops);
558 static int ipvlan_device_event(struct notifier_block *unused,
559 unsigned long event, void *ptr)
561 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
562 struct ipvl_dev *ipvlan, *next;
563 struct ipvl_port *port;
566 if (!netif_is_ipvlan_port(dev))
569 port = ipvlan_port_get_rtnl(dev);
573 list_for_each_entry(ipvlan, &port->ipvlans, pnode)
574 netif_stacked_transfer_operstate(ipvlan->phy_dev,
578 case NETDEV_UNREGISTER:
579 if (dev->reg_state != NETREG_UNREGISTERING)
582 list_for_each_entry_safe(ipvlan, next, &port->ipvlans,
584 ipvlan->dev->rtnl_link_ops->dellink(ipvlan->dev,
586 unregister_netdevice_many(&lst_kill);
589 case NETDEV_FEAT_CHANGE:
590 list_for_each_entry(ipvlan, &port->ipvlans, pnode) {
591 ipvlan->dev->features = dev->features & IPVLAN_FEATURES;
592 ipvlan->dev->gso_max_size = dev->gso_max_size;
593 ipvlan->dev->gso_max_segs = dev->gso_max_segs;
594 netdev_features_change(ipvlan->dev);
598 case NETDEV_CHANGEMTU:
599 list_for_each_entry(ipvlan, &port->ipvlans, pnode)
600 ipvlan_adjust_mtu(ipvlan, dev);
603 case NETDEV_PRE_TYPE_CHANGE:
604 /* Forbid underlying device to change its type. */
610 static int ipvlan_add_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr)
612 struct ipvl_addr *addr;
614 if (ipvlan_addr_busy(ipvlan->port, ip6_addr, true)) {
615 netif_err(ipvlan, ifup, ipvlan->dev,
616 "Failed to add IPv6=%pI6c addr for %s intf\n",
617 ip6_addr, ipvlan->dev->name);
620 addr = kzalloc(sizeof(struct ipvl_addr), GFP_ATOMIC);
624 addr->master = ipvlan;
625 memcpy(&addr->ip6addr, ip6_addr, sizeof(struct in6_addr));
626 addr->atype = IPVL_IPV6;
627 list_add_tail(&addr->anode, &ipvlan->addrs);
629 /* If the interface is not up, the address will be added to the hash
630 * list by ipvlan_open.
632 if (netif_running(ipvlan->dev))
633 ipvlan_ht_addr_add(ipvlan, addr);
638 static void ipvlan_del_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr)
640 struct ipvl_addr *addr;
642 addr = ipvlan_find_addr(ipvlan, ip6_addr, true);
646 ipvlan_ht_addr_del(addr);
647 list_del(&addr->anode);
648 kfree_rcu(addr, rcu);
653 static int ipvlan_addr6_event(struct notifier_block *unused,
654 unsigned long event, void *ptr)
656 struct inet6_ifaddr *if6 = (struct inet6_ifaddr *)ptr;
657 struct net_device *dev = (struct net_device *)if6->idev->dev;
658 struct ipvl_dev *ipvlan = netdev_priv(dev);
660 /* FIXME IPv6 autoconf calls us from bh without RTNL */
664 if (!netif_is_ipvlan(dev))
667 if (!ipvlan || !ipvlan->port)
672 if (ipvlan_add_addr6(ipvlan, &if6->addr))
677 ipvlan_del_addr6(ipvlan, &if6->addr);
684 static int ipvlan_add_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr)
686 struct ipvl_addr *addr;
688 if (ipvlan_addr_busy(ipvlan->port, ip4_addr, false)) {
689 netif_err(ipvlan, ifup, ipvlan->dev,
690 "Failed to add IPv4=%pI4 on %s intf.\n",
691 ip4_addr, ipvlan->dev->name);
694 addr = kzalloc(sizeof(struct ipvl_addr), GFP_KERNEL);
698 addr->master = ipvlan;
699 memcpy(&addr->ip4addr, ip4_addr, sizeof(struct in_addr));
700 addr->atype = IPVL_IPV4;
701 list_add_tail(&addr->anode, &ipvlan->addrs);
703 /* If the interface is not up, the address will be added to the hash
704 * list by ipvlan_open.
706 if (netif_running(ipvlan->dev))
707 ipvlan_ht_addr_add(ipvlan, addr);
712 static void ipvlan_del_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr)
714 struct ipvl_addr *addr;
716 addr = ipvlan_find_addr(ipvlan, ip4_addr, false);
720 ipvlan_ht_addr_del(addr);
721 list_del(&addr->anode);
722 kfree_rcu(addr, rcu);
727 static int ipvlan_addr4_event(struct notifier_block *unused,
728 unsigned long event, void *ptr)
730 struct in_ifaddr *if4 = (struct in_ifaddr *)ptr;
731 struct net_device *dev = (struct net_device *)if4->ifa_dev->dev;
732 struct ipvl_dev *ipvlan = netdev_priv(dev);
733 struct in_addr ip4_addr;
735 if (!netif_is_ipvlan(dev))
738 if (!ipvlan || !ipvlan->port)
743 ip4_addr.s_addr = if4->ifa_address;
744 if (ipvlan_add_addr4(ipvlan, &ip4_addr))
749 ip4_addr.s_addr = if4->ifa_address;
750 ipvlan_del_addr4(ipvlan, &ip4_addr);
757 static struct notifier_block ipvlan_addr4_notifier_block __read_mostly = {
758 .notifier_call = ipvlan_addr4_event,
761 static struct notifier_block ipvlan_notifier_block __read_mostly = {
762 .notifier_call = ipvlan_device_event,
765 static struct notifier_block ipvlan_addr6_notifier_block __read_mostly = {
766 .notifier_call = ipvlan_addr6_event,
769 static int __init ipvlan_init_module(void)
773 ipvlan_init_secret();
774 register_netdevice_notifier(&ipvlan_notifier_block);
775 register_inet6addr_notifier(&ipvlan_addr6_notifier_block);
776 register_inetaddr_notifier(&ipvlan_addr4_notifier_block);
778 err = ipvlan_link_register(&ipvlan_link_ops);
784 unregister_inetaddr_notifier(&ipvlan_addr4_notifier_block);
785 unregister_inet6addr_notifier(&ipvlan_addr6_notifier_block);
786 unregister_netdevice_notifier(&ipvlan_notifier_block);
790 static void __exit ipvlan_cleanup_module(void)
792 rtnl_link_unregister(&ipvlan_link_ops);
793 unregister_netdevice_notifier(&ipvlan_notifier_block);
794 unregister_inetaddr_notifier(&ipvlan_addr4_notifier_block);
795 unregister_inet6addr_notifier(&ipvlan_addr6_notifier_block);
798 module_init(ipvlan_init_module);
799 module_exit(ipvlan_cleanup_module);
801 MODULE_LICENSE("GPL");
802 MODULE_AUTHOR("Mahesh Bandewar <maheshb@google.com>");
803 MODULE_DESCRIPTION("Driver for L3 (IPv6/IPv4) based VLANs");
804 MODULE_ALIAS_RTNL_LINK("ipvlan");