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 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_ALL_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
;
117 dev
->state
= (dev
->state
& ~IPVLAN_STATE_MASK
) |
118 (phy_dev
->state
& IPVLAN_STATE_MASK
);
119 dev
->features
= phy_dev
->features
& IPVLAN_FEATURES
;
120 dev
->features
|= NETIF_F_LLTX
;
121 dev
->gso_max_size
= phy_dev
->gso_max_size
;
122 dev
->hard_header_len
= phy_dev
->hard_header_len
;
124 ipvlan_set_lockdep_class(dev
);
126 ipvlan
->pcpu_stats
= alloc_percpu(struct ipvl_pcpu_stats
);
127 if (!ipvlan
->pcpu_stats
)
133 static void ipvlan_uninit(struct net_device
*dev
)
135 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
136 struct ipvl_port
*port
= ipvlan
->port
;
138 free_percpu(ipvlan
->pcpu_stats
);
142 ipvlan_port_destroy(port
->dev
);
145 static int ipvlan_open(struct net_device
*dev
)
147 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
148 struct net_device
*phy_dev
= ipvlan
->phy_dev
;
149 struct ipvl_addr
*addr
;
151 if (ipvlan
->port
->mode
== IPVLAN_MODE_L3
)
152 dev
->flags
|= IFF_NOARP
;
154 dev
->flags
&= ~IFF_NOARP
;
156 list_for_each_entry(addr
, &ipvlan
->addrs
, anode
)
157 ipvlan_ht_addr_add(ipvlan
, addr
);
159 return dev_uc_add(phy_dev
, phy_dev
->dev_addr
);
162 static int ipvlan_stop(struct net_device
*dev
)
164 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
165 struct net_device
*phy_dev
= ipvlan
->phy_dev
;
166 struct ipvl_addr
*addr
;
168 dev_uc_unsync(phy_dev
, dev
);
169 dev_mc_unsync(phy_dev
, dev
);
171 dev_uc_del(phy_dev
, phy_dev
->dev_addr
);
173 list_for_each_entry(addr
, &ipvlan
->addrs
, anode
)
174 ipvlan_ht_addr_del(addr
);
179 static netdev_tx_t
ipvlan_start_xmit(struct sk_buff
*skb
,
180 struct net_device
*dev
)
182 const struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
183 int skblen
= skb
->len
;
186 ret
= ipvlan_queue_xmit(skb
, dev
);
187 if (likely(ret
== NET_XMIT_SUCCESS
|| ret
== NET_XMIT_CN
)) {
188 struct ipvl_pcpu_stats
*pcptr
;
190 pcptr
= this_cpu_ptr(ipvlan
->pcpu_stats
);
192 u64_stats_update_begin(&pcptr
->syncp
);
194 pcptr
->tx_bytes
+= skblen
;
195 u64_stats_update_end(&pcptr
->syncp
);
197 this_cpu_inc(ipvlan
->pcpu_stats
->tx_drps
);
202 static netdev_features_t
ipvlan_fix_features(struct net_device
*dev
,
203 netdev_features_t features
)
205 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
207 return features
& (ipvlan
->sfeatures
| ~IPVLAN_FEATURES
);
210 static void ipvlan_change_rx_flags(struct net_device
*dev
, int change
)
212 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
213 struct net_device
*phy_dev
= ipvlan
->phy_dev
;
215 if (change
& IFF_ALLMULTI
)
216 dev_set_allmulti(phy_dev
, dev
->flags
& IFF_ALLMULTI
? 1 : -1);
219 static void ipvlan_set_multicast_mac_filter(struct net_device
*dev
)
221 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
223 if (dev
->flags
& (IFF_PROMISC
| IFF_ALLMULTI
)) {
224 bitmap_fill(ipvlan
->mac_filters
, IPVLAN_MAC_FILTER_SIZE
);
226 struct netdev_hw_addr
*ha
;
227 DECLARE_BITMAP(mc_filters
, IPVLAN_MAC_FILTER_SIZE
);
229 bitmap_zero(mc_filters
, IPVLAN_MAC_FILTER_SIZE
);
230 netdev_for_each_mc_addr(ha
, dev
)
231 __set_bit(ipvlan_mac_hash(ha
->addr
), mc_filters
);
233 /* Turn-on broadcast bit irrespective of address family,
234 * since broadcast is deferred to a work-queue, hence no
235 * impact on fast-path processing.
237 __set_bit(ipvlan_mac_hash(dev
->broadcast
), mc_filters
);
239 bitmap_copy(ipvlan
->mac_filters
, mc_filters
,
240 IPVLAN_MAC_FILTER_SIZE
);
242 dev_uc_sync(ipvlan
->phy_dev
, dev
);
243 dev_mc_sync(ipvlan
->phy_dev
, dev
);
246 static struct rtnl_link_stats64
*ipvlan_get_stats64(struct net_device
*dev
,
247 struct rtnl_link_stats64
*s
)
249 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
251 if (ipvlan
->pcpu_stats
) {
252 struct ipvl_pcpu_stats
*pcptr
;
253 u64 rx_pkts
, rx_bytes
, rx_mcast
, tx_pkts
, tx_bytes
;
254 u32 rx_errs
= 0, tx_drps
= 0;
258 for_each_possible_cpu(idx
) {
259 pcptr
= per_cpu_ptr(ipvlan
->pcpu_stats
, idx
);
261 strt
= u64_stats_fetch_begin_irq(&pcptr
->syncp
);
262 rx_pkts
= pcptr
->rx_pkts
;
263 rx_bytes
= pcptr
->rx_bytes
;
264 rx_mcast
= pcptr
->rx_mcast
;
265 tx_pkts
= pcptr
->tx_pkts
;
266 tx_bytes
= pcptr
->tx_bytes
;
267 } while (u64_stats_fetch_retry_irq(&pcptr
->syncp
,
270 s
->rx_packets
+= rx_pkts
;
271 s
->rx_bytes
+= rx_bytes
;
272 s
->multicast
+= rx_mcast
;
273 s
->tx_packets
+= tx_pkts
;
274 s
->tx_bytes
+= tx_bytes
;
276 /* u32 values are updated without syncp protection. */
277 rx_errs
+= pcptr
->rx_errs
;
278 tx_drps
+= pcptr
->tx_drps
;
280 s
->rx_errors
= rx_errs
;
281 s
->rx_dropped
= rx_errs
;
282 s
->tx_dropped
= tx_drps
;
287 static int ipvlan_vlan_rx_add_vid(struct net_device
*dev
, __be16 proto
, u16 vid
)
289 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
290 struct net_device
*phy_dev
= ipvlan
->phy_dev
;
292 return vlan_vid_add(phy_dev
, proto
, vid
);
295 static int ipvlan_vlan_rx_kill_vid(struct net_device
*dev
, __be16 proto
,
298 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
299 struct net_device
*phy_dev
= ipvlan
->phy_dev
;
301 vlan_vid_del(phy_dev
, proto
, vid
);
305 static int ipvlan_get_iflink(const struct net_device
*dev
)
307 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
309 return ipvlan
->phy_dev
->ifindex
;
312 static const struct net_device_ops ipvlan_netdev_ops
= {
313 .ndo_init
= ipvlan_init
,
314 .ndo_uninit
= ipvlan_uninit
,
315 .ndo_open
= ipvlan_open
,
316 .ndo_stop
= ipvlan_stop
,
317 .ndo_start_xmit
= ipvlan_start_xmit
,
318 .ndo_fix_features
= ipvlan_fix_features
,
319 .ndo_change_rx_flags
= ipvlan_change_rx_flags
,
320 .ndo_set_rx_mode
= ipvlan_set_multicast_mac_filter
,
321 .ndo_get_stats64
= ipvlan_get_stats64
,
322 .ndo_vlan_rx_add_vid
= ipvlan_vlan_rx_add_vid
,
323 .ndo_vlan_rx_kill_vid
= ipvlan_vlan_rx_kill_vid
,
324 .ndo_get_iflink
= ipvlan_get_iflink
,
327 static int ipvlan_hard_header(struct sk_buff
*skb
, struct net_device
*dev
,
328 unsigned short type
, const void *daddr
,
329 const void *saddr
, unsigned len
)
331 const struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
332 struct net_device
*phy_dev
= ipvlan
->phy_dev
;
334 /* TODO Probably use a different field than dev_addr so that the
335 * mac-address on the virtual device is portable and can be carried
336 * while the packets use the mac-addr on the physical device.
338 return dev_hard_header(skb
, phy_dev
, type
, daddr
,
339 saddr
? : dev
->dev_addr
, len
);
342 static const struct header_ops ipvlan_header_ops
= {
343 .create
= ipvlan_hard_header
,
344 .parse
= eth_header_parse
,
345 .cache
= eth_header_cache
,
346 .cache_update
= eth_header_cache_update
,
349 static int ipvlan_ethtool_get_settings(struct net_device
*dev
,
350 struct ethtool_cmd
*cmd
)
352 const struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
354 return __ethtool_get_settings(ipvlan
->phy_dev
, cmd
);
357 static void ipvlan_ethtool_get_drvinfo(struct net_device
*dev
,
358 struct ethtool_drvinfo
*drvinfo
)
360 strlcpy(drvinfo
->driver
, IPVLAN_DRV
, sizeof(drvinfo
->driver
));
361 strlcpy(drvinfo
->version
, IPV_DRV_VER
, sizeof(drvinfo
->version
));
364 static u32
ipvlan_ethtool_get_msglevel(struct net_device
*dev
)
366 const struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
368 return ipvlan
->msg_enable
;
371 static void ipvlan_ethtool_set_msglevel(struct net_device
*dev
, u32 value
)
373 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
375 ipvlan
->msg_enable
= value
;
378 static const struct ethtool_ops ipvlan_ethtool_ops
= {
379 .get_link
= ethtool_op_get_link
,
380 .get_settings
= ipvlan_ethtool_get_settings
,
381 .get_drvinfo
= ipvlan_ethtool_get_drvinfo
,
382 .get_msglevel
= ipvlan_ethtool_get_msglevel
,
383 .set_msglevel
= ipvlan_ethtool_set_msglevel
,
386 static int ipvlan_nl_changelink(struct net_device
*dev
,
387 struct nlattr
*tb
[], struct nlattr
*data
[])
389 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
390 struct ipvl_port
*port
= ipvlan_port_get_rtnl(ipvlan
->phy_dev
);
392 if (data
&& data
[IFLA_IPVLAN_MODE
]) {
393 u16 nmode
= nla_get_u16(data
[IFLA_IPVLAN_MODE
]);
395 ipvlan_set_port_mode(port
, nmode
);
400 static size_t ipvlan_nl_getsize(const struct net_device
*dev
)
403 + nla_total_size(2) /* IFLA_IPVLAN_MODE */
407 static int ipvlan_nl_validate(struct nlattr
*tb
[], struct nlattr
*data
[])
409 if (data
&& data
[IFLA_IPVLAN_MODE
]) {
410 u16 mode
= nla_get_u16(data
[IFLA_IPVLAN_MODE
]);
412 if (mode
< IPVLAN_MODE_L2
|| mode
>= IPVLAN_MODE_MAX
)
418 static int ipvlan_nl_fillinfo(struct sk_buff
*skb
,
419 const struct net_device
*dev
)
421 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
422 struct ipvl_port
*port
= ipvlan_port_get_rtnl(ipvlan
->phy_dev
);
429 if (nla_put_u16(skb
, IFLA_IPVLAN_MODE
, port
->mode
))
438 static int ipvlan_link_new(struct net
*src_net
, struct net_device
*dev
,
439 struct nlattr
*tb
[], struct nlattr
*data
[])
441 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
442 struct ipvl_port
*port
;
443 struct net_device
*phy_dev
;
449 phy_dev
= __dev_get_by_index(src_net
, nla_get_u32(tb
[IFLA_LINK
]));
453 if (netif_is_ipvlan(phy_dev
)) {
454 struct ipvl_dev
*tmp
= netdev_priv(phy_dev
);
456 phy_dev
= tmp
->phy_dev
;
457 } else if (!netif_is_ipvlan_port(phy_dev
)) {
458 err
= ipvlan_port_create(phy_dev
);
463 port
= ipvlan_port_get_rtnl(phy_dev
);
464 if (data
&& data
[IFLA_IPVLAN_MODE
])
465 port
->mode
= nla_get_u16(data
[IFLA_IPVLAN_MODE
]);
467 ipvlan
->phy_dev
= phy_dev
;
470 ipvlan
->sfeatures
= IPVLAN_FEATURES
;
471 INIT_LIST_HEAD(&ipvlan
->addrs
);
473 /* TODO Probably put random address here to be presented to the
474 * world but keep using the physical-dev address for the outgoing
477 memcpy(dev
->dev_addr
, phy_dev
->dev_addr
, ETH_ALEN
);
479 dev
->priv_flags
|= IFF_IPVLAN_SLAVE
;
482 err
= register_netdevice(dev
);
484 goto ipvlan_destroy_port
;
486 err
= netdev_upper_dev_link(phy_dev
, dev
);
488 goto ipvlan_destroy_port
;
490 list_add_tail_rcu(&ipvlan
->pnode
, &port
->ipvlans
);
491 netif_stacked_transfer_operstate(phy_dev
, dev
);
497 ipvlan_port_destroy(phy_dev
);
502 static void ipvlan_link_delete(struct net_device
*dev
, struct list_head
*head
)
504 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
505 struct ipvl_addr
*addr
, *next
;
507 list_for_each_entry_safe(addr
, next
, &ipvlan
->addrs
, anode
) {
508 ipvlan_ht_addr_del(addr
);
509 list_del(&addr
->anode
);
510 kfree_rcu(addr
, rcu
);
513 list_del_rcu(&ipvlan
->pnode
);
514 unregister_netdevice_queue(dev
, head
);
515 netdev_upper_dev_unlink(ipvlan
->phy_dev
, dev
);
518 static void ipvlan_link_setup(struct net_device
*dev
)
522 dev
->priv_flags
&= ~(IFF_XMIT_DST_RELEASE
| IFF_TX_SKB_SHARING
);
523 dev
->priv_flags
|= IFF_UNICAST_FLT
;
524 dev
->netdev_ops
= &ipvlan_netdev_ops
;
525 dev
->destructor
= free_netdev
;
526 dev
->header_ops
= &ipvlan_header_ops
;
527 dev
->ethtool_ops
= &ipvlan_ethtool_ops
;
528 dev
->tx_queue_len
= 0;
531 static const struct nla_policy ipvlan_nl_policy
[IFLA_IPVLAN_MAX
+ 1] =
533 [IFLA_IPVLAN_MODE
] = { .type
= NLA_U16
},
536 static struct rtnl_link_ops ipvlan_link_ops
= {
538 .priv_size
= sizeof(struct ipvl_dev
),
540 .get_size
= ipvlan_nl_getsize
,
541 .policy
= ipvlan_nl_policy
,
542 .validate
= ipvlan_nl_validate
,
543 .fill_info
= ipvlan_nl_fillinfo
,
544 .changelink
= ipvlan_nl_changelink
,
545 .maxtype
= IFLA_IPVLAN_MAX
,
547 .setup
= ipvlan_link_setup
,
548 .newlink
= ipvlan_link_new
,
549 .dellink
= ipvlan_link_delete
,
552 static int ipvlan_link_register(struct rtnl_link_ops
*ops
)
554 return rtnl_link_register(ops
);
557 static int ipvlan_device_event(struct notifier_block
*unused
,
558 unsigned long event
, void *ptr
)
560 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
561 struct ipvl_dev
*ipvlan
, *next
;
562 struct ipvl_port
*port
;
565 if (!netif_is_ipvlan_port(dev
))
568 port
= ipvlan_port_get_rtnl(dev
);
572 list_for_each_entry(ipvlan
, &port
->ipvlans
, pnode
)
573 netif_stacked_transfer_operstate(ipvlan
->phy_dev
,
577 case NETDEV_UNREGISTER
:
578 if (dev
->reg_state
!= NETREG_UNREGISTERING
)
581 list_for_each_entry_safe(ipvlan
, next
, &port
->ipvlans
,
583 ipvlan
->dev
->rtnl_link_ops
->dellink(ipvlan
->dev
,
585 unregister_netdevice_many(&lst_kill
);
588 case NETDEV_FEAT_CHANGE
:
589 list_for_each_entry(ipvlan
, &port
->ipvlans
, pnode
) {
590 ipvlan
->dev
->features
= dev
->features
& IPVLAN_FEATURES
;
591 ipvlan
->dev
->gso_max_size
= dev
->gso_max_size
;
592 netdev_features_change(ipvlan
->dev
);
596 case NETDEV_CHANGEMTU
:
597 list_for_each_entry(ipvlan
, &port
->ipvlans
, pnode
)
598 ipvlan_adjust_mtu(ipvlan
, dev
);
601 case NETDEV_PRE_TYPE_CHANGE
:
602 /* Forbid underlying device to change its type. */
608 static int ipvlan_add_addr6(struct ipvl_dev
*ipvlan
, struct in6_addr
*ip6_addr
)
610 struct ipvl_addr
*addr
;
612 if (ipvlan_addr_busy(ipvlan
->port
, ip6_addr
, true)) {
613 netif_err(ipvlan
, ifup
, ipvlan
->dev
,
614 "Failed to add IPv6=%pI6c addr for %s intf\n",
615 ip6_addr
, ipvlan
->dev
->name
);
618 addr
= kzalloc(sizeof(struct ipvl_addr
), GFP_ATOMIC
);
622 addr
->master
= ipvlan
;
623 memcpy(&addr
->ip6addr
, ip6_addr
, sizeof(struct in6_addr
));
624 addr
->atype
= IPVL_IPV6
;
625 list_add_tail(&addr
->anode
, &ipvlan
->addrs
);
627 /* If the interface is not up, the address will be added to the hash
628 * list by ipvlan_open.
630 if (netif_running(ipvlan
->dev
))
631 ipvlan_ht_addr_add(ipvlan
, addr
);
636 static void ipvlan_del_addr6(struct ipvl_dev
*ipvlan
, struct in6_addr
*ip6_addr
)
638 struct ipvl_addr
*addr
;
640 addr
= ipvlan_find_addr(ipvlan
, ip6_addr
, true);
644 ipvlan_ht_addr_del(addr
);
645 list_del(&addr
->anode
);
646 kfree_rcu(addr
, rcu
);
651 static int ipvlan_addr6_event(struct notifier_block
*unused
,
652 unsigned long event
, void *ptr
)
654 struct inet6_ifaddr
*if6
= (struct inet6_ifaddr
*)ptr
;
655 struct net_device
*dev
= (struct net_device
*)if6
->idev
->dev
;
656 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
658 /* FIXME IPv6 autoconf calls us from bh without RTNL */
662 if (!netif_is_ipvlan(dev
))
665 if (!ipvlan
|| !ipvlan
->port
)
670 if (ipvlan_add_addr6(ipvlan
, &if6
->addr
))
675 ipvlan_del_addr6(ipvlan
, &if6
->addr
);
682 static int ipvlan_add_addr4(struct ipvl_dev
*ipvlan
, struct in_addr
*ip4_addr
)
684 struct ipvl_addr
*addr
;
686 if (ipvlan_addr_busy(ipvlan
->port
, ip4_addr
, false)) {
687 netif_err(ipvlan
, ifup
, ipvlan
->dev
,
688 "Failed to add IPv4=%pI4 on %s intf.\n",
689 ip4_addr
, ipvlan
->dev
->name
);
692 addr
= kzalloc(sizeof(struct ipvl_addr
), GFP_KERNEL
);
696 addr
->master
= ipvlan
;
697 memcpy(&addr
->ip4addr
, ip4_addr
, sizeof(struct in_addr
));
698 addr
->atype
= IPVL_IPV4
;
699 list_add_tail(&addr
->anode
, &ipvlan
->addrs
);
701 /* If the interface is not up, the address will be added to the hash
702 * list by ipvlan_open.
704 if (netif_running(ipvlan
->dev
))
705 ipvlan_ht_addr_add(ipvlan
, addr
);
710 static void ipvlan_del_addr4(struct ipvl_dev
*ipvlan
, struct in_addr
*ip4_addr
)
712 struct ipvl_addr
*addr
;
714 addr
= ipvlan_find_addr(ipvlan
, ip4_addr
, false);
718 ipvlan_ht_addr_del(addr
);
719 list_del(&addr
->anode
);
720 kfree_rcu(addr
, rcu
);
725 static int ipvlan_addr4_event(struct notifier_block
*unused
,
726 unsigned long event
, void *ptr
)
728 struct in_ifaddr
*if4
= (struct in_ifaddr
*)ptr
;
729 struct net_device
*dev
= (struct net_device
*)if4
->ifa_dev
->dev
;
730 struct ipvl_dev
*ipvlan
= netdev_priv(dev
);
731 struct in_addr ip4_addr
;
733 if (!netif_is_ipvlan(dev
))
736 if (!ipvlan
|| !ipvlan
->port
)
741 ip4_addr
.s_addr
= if4
->ifa_address
;
742 if (ipvlan_add_addr4(ipvlan
, &ip4_addr
))
747 ip4_addr
.s_addr
= if4
->ifa_address
;
748 ipvlan_del_addr4(ipvlan
, &ip4_addr
);
755 static struct notifier_block ipvlan_addr4_notifier_block __read_mostly
= {
756 .notifier_call
= ipvlan_addr4_event
,
759 static struct notifier_block ipvlan_notifier_block __read_mostly
= {
760 .notifier_call
= ipvlan_device_event
,
763 static struct notifier_block ipvlan_addr6_notifier_block __read_mostly
= {
764 .notifier_call
= ipvlan_addr6_event
,
767 static int __init
ipvlan_init_module(void)
771 ipvlan_init_secret();
772 register_netdevice_notifier(&ipvlan_notifier_block
);
773 register_inet6addr_notifier(&ipvlan_addr6_notifier_block
);
774 register_inetaddr_notifier(&ipvlan_addr4_notifier_block
);
776 err
= ipvlan_link_register(&ipvlan_link_ops
);
782 unregister_inetaddr_notifier(&ipvlan_addr4_notifier_block
);
783 unregister_inet6addr_notifier(&ipvlan_addr6_notifier_block
);
784 unregister_netdevice_notifier(&ipvlan_notifier_block
);
788 static void __exit
ipvlan_cleanup_module(void)
790 rtnl_link_unregister(&ipvlan_link_ops
);
791 unregister_netdevice_notifier(&ipvlan_notifier_block
);
792 unregister_inetaddr_notifier(&ipvlan_addr4_notifier_block
);
793 unregister_inet6addr_notifier(&ipvlan_addr6_notifier_block
);
796 module_init(ipvlan_init_module
);
797 module_exit(ipvlan_cleanup_module
);
799 MODULE_LICENSE("GPL");
800 MODULE_AUTHOR("Mahesh Bandewar <maheshb@google.com>");
801 MODULE_DESCRIPTION("Driver for L3 (IPv6/IPv4) based VLANs");
802 MODULE_ALIAS_RTNL_LINK("ipvlan");