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 void ipvlan_adjust_mtu(struct ipvl_dev *ipvlan, struct net_device *dev)
14 ipvlan->dev->mtu = dev->mtu - ipvlan->mtu_adj;
17 void ipvlan_set_port_mode(struct ipvl_port *port, u32 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 err = netdev_rx_handler_register(dev, ipvlan_handle_frame, port);
61 dev->priv_flags |= IFF_IPVLAN_MASTER;
69 static void ipvlan_port_destroy(struct net_device *dev)
71 struct ipvl_port *port = ipvlan_port_get_rtnl(dev);
73 dev->priv_flags &= ~IFF_IPVLAN_MASTER;
74 netdev_rx_handler_unregister(dev);
78 /* ipvlan network devices have devices nesting below it and are a special
79 * "super class" of normal network devices; split their locks off into a
80 * separate class since they always nest.
82 static struct lock_class_key ipvlan_netdev_xmit_lock_key;
83 static struct lock_class_key ipvlan_netdev_addr_lock_key;
85 #define IPVLAN_FEATURES \
86 (NETIF_F_SG | NETIF_F_ALL_CSUM | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST | \
87 NETIF_F_GSO | NETIF_F_TSO | NETIF_F_UFO | NETIF_F_GSO_ROBUST | \
88 NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_GRO | NETIF_F_RXCSUM | \
89 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER)
91 #define IPVLAN_STATE_MASK \
92 ((1<<__LINK_STATE_NOCARRIER) | (1<<__LINK_STATE_DORMANT))
94 static void ipvlan_set_lockdep_class_one(struct net_device *dev,
95 struct netdev_queue *txq,
98 lockdep_set_class(&txq->_xmit_lock, &ipvlan_netdev_xmit_lock_key);
101 static void ipvlan_set_lockdep_class(struct net_device *dev)
103 lockdep_set_class(&dev->addr_list_lock, &ipvlan_netdev_addr_lock_key);
104 netdev_for_each_tx_queue(dev, ipvlan_set_lockdep_class_one, NULL);
107 static int ipvlan_init(struct net_device *dev)
109 struct ipvl_dev *ipvlan = netdev_priv(dev);
110 const struct net_device *phy_dev = ipvlan->phy_dev;
112 dev->state = (dev->state & ~IPVLAN_STATE_MASK) |
113 (phy_dev->state & IPVLAN_STATE_MASK);
114 dev->features = phy_dev->features & IPVLAN_FEATURES;
115 dev->features |= NETIF_F_LLTX;
116 dev->gso_max_size = phy_dev->gso_max_size;
117 dev->hard_header_len = phy_dev->hard_header_len;
119 ipvlan_set_lockdep_class(dev);
121 ipvlan->pcpu_stats = alloc_percpu(struct ipvl_pcpu_stats);
122 if (!ipvlan->pcpu_stats)
128 static void ipvlan_uninit(struct net_device *dev)
130 struct ipvl_dev *ipvlan = netdev_priv(dev);
131 struct ipvl_port *port = ipvlan->port;
133 free_percpu(ipvlan->pcpu_stats);
137 ipvlan_port_destroy(port->dev);
140 static int ipvlan_open(struct net_device *dev)
142 struct ipvl_dev *ipvlan = netdev_priv(dev);
143 struct net_device *phy_dev = ipvlan->phy_dev;
144 struct ipvl_addr *addr;
146 if (ipvlan->port->mode == IPVLAN_MODE_L3)
147 dev->flags |= IFF_NOARP;
149 dev->flags &= ~IFF_NOARP;
151 if (ipvlan->ipv6cnt > 0 || ipvlan->ipv4cnt > 0) {
152 list_for_each_entry(addr, &ipvlan->addrs, anode)
153 ipvlan_ht_addr_add(ipvlan, addr);
155 return dev_uc_add(phy_dev, phy_dev->dev_addr);
158 static int ipvlan_stop(struct net_device *dev)
160 struct ipvl_dev *ipvlan = netdev_priv(dev);
161 struct net_device *phy_dev = ipvlan->phy_dev;
162 struct ipvl_addr *addr;
164 dev_uc_unsync(phy_dev, dev);
165 dev_mc_unsync(phy_dev, dev);
167 dev_uc_del(phy_dev, phy_dev->dev_addr);
169 if (ipvlan->ipv6cnt > 0 || ipvlan->ipv4cnt > 0) {
170 list_for_each_entry(addr, &ipvlan->addrs, anode)
171 ipvlan_ht_addr_del(addr, !dev->dismantle);
176 static netdev_tx_t ipvlan_start_xmit(struct sk_buff *skb,
177 struct net_device *dev)
179 const struct ipvl_dev *ipvlan = netdev_priv(dev);
180 int skblen = skb->len;
183 ret = ipvlan_queue_xmit(skb, dev);
184 if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
185 struct ipvl_pcpu_stats *pcptr;
187 pcptr = this_cpu_ptr(ipvlan->pcpu_stats);
189 u64_stats_update_begin(&pcptr->syncp);
191 pcptr->tx_bytes += skblen;
192 u64_stats_update_end(&pcptr->syncp);
194 this_cpu_inc(ipvlan->pcpu_stats->tx_drps);
199 static netdev_features_t ipvlan_fix_features(struct net_device *dev,
200 netdev_features_t features)
202 struct ipvl_dev *ipvlan = netdev_priv(dev);
204 return features & (ipvlan->sfeatures | ~IPVLAN_FEATURES);
207 static void ipvlan_change_rx_flags(struct net_device *dev, int change)
209 struct ipvl_dev *ipvlan = netdev_priv(dev);
210 struct net_device *phy_dev = ipvlan->phy_dev;
212 if (change & IFF_ALLMULTI)
213 dev_set_allmulti(phy_dev, dev->flags & IFF_ALLMULTI? 1 : -1);
216 static void ipvlan_set_broadcast_mac_filter(struct ipvl_dev *ipvlan, bool set)
218 struct net_device *dev = ipvlan->dev;
219 unsigned int hashbit = ipvlan_mac_hash(dev->broadcast);
221 if (set && !test_bit(hashbit, ipvlan->mac_filters))
222 __set_bit(hashbit, ipvlan->mac_filters);
223 else if (!set && test_bit(hashbit, ipvlan->mac_filters))
224 __clear_bit(hashbit, ipvlan->mac_filters);
227 static void ipvlan_set_multicast_mac_filter(struct net_device *dev)
229 struct ipvl_dev *ipvlan = netdev_priv(dev);
231 if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
232 bitmap_fill(ipvlan->mac_filters, IPVLAN_MAC_FILTER_SIZE);
234 struct netdev_hw_addr *ha;
235 DECLARE_BITMAP(mc_filters, IPVLAN_MAC_FILTER_SIZE);
237 bitmap_zero(mc_filters, IPVLAN_MAC_FILTER_SIZE);
238 netdev_for_each_mc_addr(ha, dev)
239 __set_bit(ipvlan_mac_hash(ha->addr), mc_filters);
241 bitmap_copy(ipvlan->mac_filters, mc_filters,
242 IPVLAN_MAC_FILTER_SIZE);
244 dev_uc_sync(ipvlan->phy_dev, dev);
245 dev_mc_sync(ipvlan->phy_dev, dev);
248 static struct rtnl_link_stats64 *ipvlan_get_stats64(struct net_device *dev,
249 struct rtnl_link_stats64 *s)
251 struct ipvl_dev *ipvlan = netdev_priv(dev);
253 if (ipvlan->pcpu_stats) {
254 struct ipvl_pcpu_stats *pcptr;
255 u64 rx_pkts, rx_bytes, rx_mcast, tx_pkts, tx_bytes;
256 u32 rx_errs = 0, tx_drps = 0;
260 for_each_possible_cpu(idx) {
261 pcptr = per_cpu_ptr(ipvlan->pcpu_stats, idx);
263 strt= u64_stats_fetch_begin_irq(&pcptr->syncp);
264 rx_pkts = pcptr->rx_pkts;
265 rx_bytes = pcptr->rx_bytes;
266 rx_mcast = pcptr->rx_mcast;
267 tx_pkts = pcptr->tx_pkts;
268 tx_bytes = pcptr->tx_bytes;
269 } while (u64_stats_fetch_retry_irq(&pcptr->syncp,
272 s->rx_packets += rx_pkts;
273 s->rx_bytes += rx_bytes;
274 s->multicast += rx_mcast;
275 s->tx_packets += tx_pkts;
276 s->tx_bytes += tx_bytes;
278 /* u32 values are updated without syncp protection. */
279 rx_errs += pcptr->rx_errs;
280 tx_drps += pcptr->tx_drps;
282 s->rx_errors = rx_errs;
283 s->rx_dropped = rx_errs;
284 s->tx_dropped = tx_drps;
289 static int ipvlan_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
291 struct ipvl_dev *ipvlan = netdev_priv(dev);
292 struct net_device *phy_dev = ipvlan->phy_dev;
294 return vlan_vid_add(phy_dev, proto, vid);
297 static int ipvlan_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
300 struct ipvl_dev *ipvlan = netdev_priv(dev);
301 struct net_device *phy_dev = ipvlan->phy_dev;
303 vlan_vid_del(phy_dev, proto, vid);
307 static int ipvlan_get_iflink(const struct net_device *dev)
309 struct ipvl_dev *ipvlan = netdev_priv(dev);
311 return ipvlan->phy_dev->ifindex;
314 static const struct net_device_ops ipvlan_netdev_ops = {
315 .ndo_init = ipvlan_init,
316 .ndo_uninit = ipvlan_uninit,
317 .ndo_open = ipvlan_open,
318 .ndo_stop = ipvlan_stop,
319 .ndo_start_xmit = ipvlan_start_xmit,
320 .ndo_fix_features = ipvlan_fix_features,
321 .ndo_change_rx_flags = ipvlan_change_rx_flags,
322 .ndo_set_rx_mode = ipvlan_set_multicast_mac_filter,
323 .ndo_get_stats64 = ipvlan_get_stats64,
324 .ndo_vlan_rx_add_vid = ipvlan_vlan_rx_add_vid,
325 .ndo_vlan_rx_kill_vid = ipvlan_vlan_rx_kill_vid,
326 .ndo_get_iflink = ipvlan_get_iflink,
329 static int ipvlan_hard_header(struct sk_buff *skb, struct net_device *dev,
330 unsigned short type, const void *daddr,
331 const void *saddr, unsigned len)
333 const struct ipvl_dev *ipvlan = netdev_priv(dev);
334 struct net_device *phy_dev = ipvlan->phy_dev;
336 /* TODO Probably use a different field than dev_addr so that the
337 * mac-address on the virtual device is portable and can be carried
338 * while the packets use the mac-addr on the physical device.
340 return dev_hard_header(skb, phy_dev, type, daddr,
341 saddr ? : dev->dev_addr, len);
344 static const struct header_ops ipvlan_header_ops = {
345 .create = ipvlan_hard_header,
346 .parse = eth_header_parse,
347 .cache = eth_header_cache,
348 .cache_update = eth_header_cache_update,
351 static int ipvlan_ethtool_get_settings(struct net_device *dev,
352 struct ethtool_cmd *cmd)
354 const struct ipvl_dev *ipvlan = netdev_priv(dev);
356 return __ethtool_get_settings(ipvlan->phy_dev, cmd);
359 static void ipvlan_ethtool_get_drvinfo(struct net_device *dev,
360 struct ethtool_drvinfo *drvinfo)
362 strlcpy(drvinfo->driver, IPVLAN_DRV, sizeof(drvinfo->driver));
363 strlcpy(drvinfo->version, IPV_DRV_VER, sizeof(drvinfo->version));
366 static u32 ipvlan_ethtool_get_msglevel(struct net_device *dev)
368 const struct ipvl_dev *ipvlan = netdev_priv(dev);
370 return ipvlan->msg_enable;
373 static void ipvlan_ethtool_set_msglevel(struct net_device *dev, u32 value)
375 struct ipvl_dev *ipvlan = netdev_priv(dev);
377 ipvlan->msg_enable = value;
380 static const struct ethtool_ops ipvlan_ethtool_ops = {
381 .get_link = ethtool_op_get_link,
382 .get_settings = ipvlan_ethtool_get_settings,
383 .get_drvinfo = ipvlan_ethtool_get_drvinfo,
384 .get_msglevel = ipvlan_ethtool_get_msglevel,
385 .set_msglevel = ipvlan_ethtool_set_msglevel,
388 static int ipvlan_nl_changelink(struct net_device *dev,
389 struct nlattr *tb[], struct nlattr *data[])
391 struct ipvl_dev *ipvlan = netdev_priv(dev);
392 struct ipvl_port *port = ipvlan_port_get_rtnl(ipvlan->phy_dev);
394 if (data && data[IFLA_IPVLAN_MODE]) {
395 u16 nmode = nla_get_u16(data[IFLA_IPVLAN_MODE]);
397 ipvlan_set_port_mode(port, nmode);
402 static size_t ipvlan_nl_getsize(const struct net_device *dev)
405 + nla_total_size(2) /* IFLA_IPVLAN_MODE */
409 static int ipvlan_nl_validate(struct nlattr *tb[], struct nlattr *data[])
411 if (data && data[IFLA_IPVLAN_MODE]) {
412 u16 mode = nla_get_u16(data[IFLA_IPVLAN_MODE]);
414 if (mode < IPVLAN_MODE_L2 || mode >= IPVLAN_MODE_MAX)
420 static int ipvlan_nl_fillinfo(struct sk_buff *skb,
421 const struct net_device *dev)
423 struct ipvl_dev *ipvlan = netdev_priv(dev);
424 struct ipvl_port *port = ipvlan_port_get_rtnl(ipvlan->phy_dev);
431 if (nla_put_u16(skb, IFLA_IPVLAN_MODE, port->mode))
440 static int ipvlan_link_new(struct net *src_net, struct net_device *dev,
441 struct nlattr *tb[], struct nlattr *data[])
443 struct ipvl_dev *ipvlan = netdev_priv(dev);
444 struct ipvl_port *port;
445 struct net_device *phy_dev;
451 phy_dev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK]));
455 if (netif_is_ipvlan(phy_dev)) {
456 struct ipvl_dev *tmp = netdev_priv(phy_dev);
458 phy_dev = tmp->phy_dev;
459 } else if (!netif_is_ipvlan_port(phy_dev)) {
460 err = ipvlan_port_create(phy_dev);
465 port = ipvlan_port_get_rtnl(phy_dev);
466 if (data && data[IFLA_IPVLAN_MODE])
467 port->mode = nla_get_u16(data[IFLA_IPVLAN_MODE]);
469 ipvlan->phy_dev = phy_dev;
472 ipvlan->sfeatures = IPVLAN_FEATURES;
473 INIT_LIST_HEAD(&ipvlan->addrs);
477 /* TODO Probably put random address here to be presented to the
478 * world but keep using the physical-dev address for the outgoing
481 memcpy(dev->dev_addr, phy_dev->dev_addr, ETH_ALEN);
483 dev->priv_flags |= IFF_IPVLAN_SLAVE;
486 err = register_netdevice(dev);
488 goto ipvlan_destroy_port;
490 err = netdev_upper_dev_link(phy_dev, dev);
492 goto ipvlan_destroy_port;
494 list_add_tail_rcu(&ipvlan->pnode, &port->ipvlans);
495 netif_stacked_transfer_operstate(phy_dev, dev);
501 ipvlan_port_destroy(phy_dev);
506 static void ipvlan_link_delete(struct net_device *dev, struct list_head *head)
508 struct ipvl_dev *ipvlan = netdev_priv(dev);
509 struct ipvl_addr *addr, *next;
511 if (ipvlan->ipv6cnt > 0 || ipvlan->ipv4cnt > 0) {
512 list_for_each_entry_safe(addr, next, &ipvlan->addrs, anode) {
513 ipvlan_ht_addr_del(addr, !dev->dismantle);
514 list_del(&addr->anode);
517 list_del_rcu(&ipvlan->pnode);
518 unregister_netdevice_queue(dev, head);
519 netdev_upper_dev_unlink(ipvlan->phy_dev, dev);
522 static void ipvlan_link_setup(struct net_device *dev)
526 dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
527 dev->priv_flags |= IFF_UNICAST_FLT;
528 dev->netdev_ops = &ipvlan_netdev_ops;
529 dev->destructor = free_netdev;
530 dev->header_ops = &ipvlan_header_ops;
531 dev->ethtool_ops = &ipvlan_ethtool_ops;
532 dev->tx_queue_len = 0;
535 static const struct nla_policy ipvlan_nl_policy[IFLA_IPVLAN_MAX + 1] =
537 [IFLA_IPVLAN_MODE] = { .type = NLA_U16 },
540 static struct rtnl_link_ops ipvlan_link_ops = {
542 .priv_size = sizeof(struct ipvl_dev),
544 .get_size = ipvlan_nl_getsize,
545 .policy = ipvlan_nl_policy,
546 .validate = ipvlan_nl_validate,
547 .fill_info = ipvlan_nl_fillinfo,
548 .changelink = ipvlan_nl_changelink,
549 .maxtype = IFLA_IPVLAN_MAX,
551 .setup = ipvlan_link_setup,
552 .newlink = ipvlan_link_new,
553 .dellink = ipvlan_link_delete,
556 static int ipvlan_link_register(struct rtnl_link_ops *ops)
558 return rtnl_link_register(ops);
561 static int ipvlan_device_event(struct notifier_block *unused,
562 unsigned long event, void *ptr)
564 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
565 struct ipvl_dev *ipvlan, *next;
566 struct ipvl_port *port;
569 if (!netif_is_ipvlan_port(dev))
572 port = ipvlan_port_get_rtnl(dev);
576 list_for_each_entry(ipvlan, &port->ipvlans, pnode)
577 netif_stacked_transfer_operstate(ipvlan->phy_dev,
581 case NETDEV_UNREGISTER:
582 if (dev->reg_state != NETREG_UNREGISTERING)
585 list_for_each_entry_safe(ipvlan, next, &port->ipvlans,
587 ipvlan->dev->rtnl_link_ops->dellink(ipvlan->dev,
589 unregister_netdevice_many(&lst_kill);
592 case NETDEV_FEAT_CHANGE:
593 list_for_each_entry(ipvlan, &port->ipvlans, pnode) {
594 ipvlan->dev->features = dev->features & IPVLAN_FEATURES;
595 ipvlan->dev->gso_max_size = dev->gso_max_size;
596 netdev_features_change(ipvlan->dev);
600 case NETDEV_CHANGEMTU:
601 list_for_each_entry(ipvlan, &port->ipvlans, pnode)
602 ipvlan_adjust_mtu(ipvlan, dev);
605 case NETDEV_PRE_TYPE_CHANGE:
606 /* Forbid underlying device to change its type. */
612 static int ipvlan_add_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr)
614 struct ipvl_addr *addr;
616 if (ipvlan_addr_busy(ipvlan->port, ip6_addr, true)) {
617 netif_err(ipvlan, ifup, ipvlan->dev,
618 "Failed to add IPv6=%pI6c addr for %s intf\n",
619 ip6_addr, ipvlan->dev->name);
622 addr = kzalloc(sizeof(struct ipvl_addr), GFP_ATOMIC);
626 addr->master = ipvlan;
627 memcpy(&addr->ip6addr, ip6_addr, sizeof(struct in6_addr));
628 addr->atype = IPVL_IPV6;
629 list_add_tail(&addr->anode, &ipvlan->addrs);
631 /* If the interface is not up, the address will be added to the hash
632 * list by ipvlan_open.
634 if (netif_running(ipvlan->dev))
635 ipvlan_ht_addr_add(ipvlan, addr);
640 static void ipvlan_del_addr6(struct ipvl_dev *ipvlan, struct in6_addr *ip6_addr)
642 struct ipvl_addr *addr;
644 addr = ipvlan_find_addr(ipvlan, ip6_addr, true);
648 ipvlan_ht_addr_del(addr, true);
649 list_del(&addr->anode);
651 WARN_ON(ipvlan->ipv6cnt < 0);
652 kfree_rcu(addr, rcu);
657 static int ipvlan_addr6_event(struct notifier_block *unused,
658 unsigned long event, void *ptr)
660 struct inet6_ifaddr *if6 = (struct inet6_ifaddr *)ptr;
661 struct net_device *dev = (struct net_device *)if6->idev->dev;
662 struct ipvl_dev *ipvlan = netdev_priv(dev);
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);
708 ipvlan_set_broadcast_mac_filter(ipvlan, true);
713 static void ipvlan_del_addr4(struct ipvl_dev *ipvlan, struct in_addr *ip4_addr)
715 struct ipvl_addr *addr;
717 addr = ipvlan_find_addr(ipvlan, ip4_addr, false);
721 ipvlan_ht_addr_del(addr, true);
722 list_del(&addr->anode);
724 WARN_ON(ipvlan->ipv4cnt < 0);
725 if (!ipvlan->ipv4cnt)
726 ipvlan_set_broadcast_mac_filter(ipvlan, false);
727 kfree_rcu(addr, rcu);
732 static int ipvlan_addr4_event(struct notifier_block *unused,
733 unsigned long event, void *ptr)
735 struct in_ifaddr *if4 = (struct in_ifaddr *)ptr;
736 struct net_device *dev = (struct net_device *)if4->ifa_dev->dev;
737 struct ipvl_dev *ipvlan = netdev_priv(dev);
738 struct in_addr ip4_addr;
740 if (!netif_is_ipvlan(dev))
743 if (!ipvlan || !ipvlan->port)
748 ip4_addr.s_addr = if4->ifa_address;
749 if (ipvlan_add_addr4(ipvlan, &ip4_addr))
754 ip4_addr.s_addr = if4->ifa_address;
755 ipvlan_del_addr4(ipvlan, &ip4_addr);
762 static struct notifier_block ipvlan_addr4_notifier_block __read_mostly = {
763 .notifier_call = ipvlan_addr4_event,
766 static struct notifier_block ipvlan_notifier_block __read_mostly = {
767 .notifier_call = ipvlan_device_event,
770 static struct notifier_block ipvlan_addr6_notifier_block __read_mostly = {
771 .notifier_call = ipvlan_addr6_event,
774 static int __init ipvlan_init_module(void)
778 ipvlan_init_secret();
779 register_netdevice_notifier(&ipvlan_notifier_block);
780 register_inet6addr_notifier(&ipvlan_addr6_notifier_block);
781 register_inetaddr_notifier(&ipvlan_addr4_notifier_block);
783 err = ipvlan_link_register(&ipvlan_link_ops);
789 unregister_inetaddr_notifier(&ipvlan_addr4_notifier_block);
790 unregister_inet6addr_notifier(&ipvlan_addr6_notifier_block);
791 unregister_netdevice_notifier(&ipvlan_notifier_block);
795 static void __exit ipvlan_cleanup_module(void)
797 rtnl_link_unregister(&ipvlan_link_ops);
798 unregister_netdevice_notifier(&ipvlan_notifier_block);
799 unregister_inetaddr_notifier(&ipvlan_addr4_notifier_block);
800 unregister_inet6addr_notifier(&ipvlan_addr6_notifier_block);
803 module_init(ipvlan_init_module);
804 module_exit(ipvlan_cleanup_module);
806 MODULE_LICENSE("GPL");
807 MODULE_AUTHOR("Mahesh Bandewar <maheshb@google.com>");
808 MODULE_DESCRIPTION("Driver for L3 (IPv6/IPv4) based VLANs");
809 MODULE_ALIAS_RTNL_LINK("ipvlan");