2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
6 * Routing netlink socket interface: protocol independent part.
8 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
16 * Vitaly E. Lavrov RTA_OK arithmetics was wrong.
19 #include <linux/errno.h>
20 #include <linux/module.h>
21 #include <linux/types.h>
22 #include <linux/socket.h>
23 #include <linux/kernel.h>
24 #include <linux/timer.h>
25 #include <linux/string.h>
26 #include <linux/sockios.h>
27 #include <linux/net.h>
28 #include <linux/fcntl.h>
30 #include <linux/slab.h>
31 #include <linux/interrupt.h>
32 #include <linux/capability.h>
33 #include <linux/skbuff.h>
34 #include <linux/init.h>
35 #include <linux/security.h>
36 #include <linux/mutex.h>
37 #include <linux/if_addr.h>
38 #include <linux/if_bridge.h>
39 #include <linux/if_vlan.h>
40 #include <linux/pci.h>
41 #include <linux/etherdevice.h>
43 #include <asm/uaccess.h>
45 #include <linux/inet.h>
46 #include <linux/netdevice.h>
48 #include <net/protocol.h>
50 #include <net/route.h>
53 #include <net/pkt_sched.h>
54 #include <net/fib_rules.h>
55 #include <net/rtnetlink.h>
56 #include <net/net_namespace.h>
60 rtnl_dumpit_func dumpit
;
61 rtnl_calcit_func calcit
;
64 static DEFINE_MUTEX(rtnl_mutex
);
68 mutex_lock(&rtnl_mutex
);
70 EXPORT_SYMBOL(rtnl_lock
);
72 void __rtnl_unlock(void)
74 mutex_unlock(&rtnl_mutex
);
77 void rtnl_unlock(void)
79 /* This fellow will unlock it for us. */
82 EXPORT_SYMBOL(rtnl_unlock
);
84 int rtnl_trylock(void)
86 return mutex_trylock(&rtnl_mutex
);
88 EXPORT_SYMBOL(rtnl_trylock
);
90 int rtnl_is_locked(void)
92 return mutex_is_locked(&rtnl_mutex
);
94 EXPORT_SYMBOL(rtnl_is_locked
);
96 #ifdef CONFIG_PROVE_LOCKING
97 int lockdep_rtnl_is_held(void)
99 return lockdep_is_held(&rtnl_mutex
);
101 EXPORT_SYMBOL(lockdep_rtnl_is_held
);
102 #endif /* #ifdef CONFIG_PROVE_LOCKING */
104 static struct rtnl_link
*rtnl_msg_handlers
[RTNL_FAMILY_MAX
+ 1];
106 static inline int rtm_msgindex(int msgtype
)
108 int msgindex
= msgtype
- RTM_BASE
;
111 * msgindex < 0 implies someone tried to register a netlink
112 * control code. msgindex >= RTM_NR_MSGTYPES may indicate that
113 * the message type has not been added to linux/rtnetlink.h
115 BUG_ON(msgindex
< 0 || msgindex
>= RTM_NR_MSGTYPES
);
120 static rtnl_doit_func
rtnl_get_doit(int protocol
, int msgindex
)
122 struct rtnl_link
*tab
;
124 if (protocol
<= RTNL_FAMILY_MAX
)
125 tab
= rtnl_msg_handlers
[protocol
];
129 if (tab
== NULL
|| tab
[msgindex
].doit
== NULL
)
130 tab
= rtnl_msg_handlers
[PF_UNSPEC
];
132 return tab
[msgindex
].doit
;
135 static rtnl_dumpit_func
rtnl_get_dumpit(int protocol
, int msgindex
)
137 struct rtnl_link
*tab
;
139 if (protocol
<= RTNL_FAMILY_MAX
)
140 tab
= rtnl_msg_handlers
[protocol
];
144 if (tab
== NULL
|| tab
[msgindex
].dumpit
== NULL
)
145 tab
= rtnl_msg_handlers
[PF_UNSPEC
];
147 return tab
[msgindex
].dumpit
;
150 static rtnl_calcit_func
rtnl_get_calcit(int protocol
, int msgindex
)
152 struct rtnl_link
*tab
;
154 if (protocol
<= RTNL_FAMILY_MAX
)
155 tab
= rtnl_msg_handlers
[protocol
];
159 if (tab
== NULL
|| tab
[msgindex
].calcit
== NULL
)
160 tab
= rtnl_msg_handlers
[PF_UNSPEC
];
162 return tab
[msgindex
].calcit
;
166 * __rtnl_register - Register a rtnetlink message type
167 * @protocol: Protocol family or PF_UNSPEC
168 * @msgtype: rtnetlink message type
169 * @doit: Function pointer called for each request message
170 * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message
171 * @calcit: Function pointer to calc size of dump message
173 * Registers the specified function pointers (at least one of them has
174 * to be non-NULL) to be called whenever a request message for the
175 * specified protocol family and message type is received.
177 * The special protocol family PF_UNSPEC may be used to define fallback
178 * function pointers for the case when no entry for the specific protocol
181 * Returns 0 on success or a negative error code.
183 int __rtnl_register(int protocol
, int msgtype
,
184 rtnl_doit_func doit
, rtnl_dumpit_func dumpit
,
185 rtnl_calcit_func calcit
)
187 struct rtnl_link
*tab
;
190 BUG_ON(protocol
< 0 || protocol
> RTNL_FAMILY_MAX
);
191 msgindex
= rtm_msgindex(msgtype
);
193 tab
= rtnl_msg_handlers
[protocol
];
195 tab
= kcalloc(RTM_NR_MSGTYPES
, sizeof(*tab
), GFP_KERNEL
);
199 rtnl_msg_handlers
[protocol
] = tab
;
203 tab
[msgindex
].doit
= doit
;
206 tab
[msgindex
].dumpit
= dumpit
;
209 tab
[msgindex
].calcit
= calcit
;
213 EXPORT_SYMBOL_GPL(__rtnl_register
);
216 * rtnl_register - Register a rtnetlink message type
218 * Identical to __rtnl_register() but panics on failure. This is useful
219 * as failure of this function is very unlikely, it can only happen due
220 * to lack of memory when allocating the chain to store all message
221 * handlers for a protocol. Meant for use in init functions where lack
222 * of memory implies no sense in continuing.
224 void rtnl_register(int protocol
, int msgtype
,
225 rtnl_doit_func doit
, rtnl_dumpit_func dumpit
,
226 rtnl_calcit_func calcit
)
228 if (__rtnl_register(protocol
, msgtype
, doit
, dumpit
, calcit
) < 0)
229 panic("Unable to register rtnetlink message handler, "
230 "protocol = %d, message type = %d\n",
233 EXPORT_SYMBOL_GPL(rtnl_register
);
236 * rtnl_unregister - Unregister a rtnetlink message type
237 * @protocol: Protocol family or PF_UNSPEC
238 * @msgtype: rtnetlink message type
240 * Returns 0 on success or a negative error code.
242 int rtnl_unregister(int protocol
, int msgtype
)
246 BUG_ON(protocol
< 0 || protocol
> RTNL_FAMILY_MAX
);
247 msgindex
= rtm_msgindex(msgtype
);
249 if (rtnl_msg_handlers
[protocol
] == NULL
)
252 rtnl_msg_handlers
[protocol
][msgindex
].doit
= NULL
;
253 rtnl_msg_handlers
[protocol
][msgindex
].dumpit
= NULL
;
257 EXPORT_SYMBOL_GPL(rtnl_unregister
);
260 * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol
261 * @protocol : Protocol family or PF_UNSPEC
263 * Identical to calling rtnl_unregster() for all registered message types
264 * of a certain protocol family.
266 void rtnl_unregister_all(int protocol
)
268 BUG_ON(protocol
< 0 || protocol
> RTNL_FAMILY_MAX
);
270 kfree(rtnl_msg_handlers
[protocol
]);
271 rtnl_msg_handlers
[protocol
] = NULL
;
273 EXPORT_SYMBOL_GPL(rtnl_unregister_all
);
275 static LIST_HEAD(link_ops
);
277 static const struct rtnl_link_ops
*rtnl_link_ops_get(const char *kind
)
279 const struct rtnl_link_ops
*ops
;
281 list_for_each_entry(ops
, &link_ops
, list
) {
282 if (!strcmp(ops
->kind
, kind
))
289 * __rtnl_link_register - Register rtnl_link_ops with rtnetlink.
290 * @ops: struct rtnl_link_ops * to register
292 * The caller must hold the rtnl_mutex. This function should be used
293 * by drivers that create devices during module initialization. It
294 * must be called before registering the devices.
296 * Returns 0 on success or a negative error code.
298 int __rtnl_link_register(struct rtnl_link_ops
*ops
)
300 if (rtnl_link_ops_get(ops
->kind
))
303 /* The check for setup is here because if ops
304 * does not have that filled up, it is not possible
305 * to use the ops for creating device. So do not
306 * fill up dellink as well. That disables rtnl_dellink.
308 if (ops
->setup
&& !ops
->dellink
)
309 ops
->dellink
= unregister_netdevice_queue
;
311 list_add_tail(&ops
->list
, &link_ops
);
314 EXPORT_SYMBOL_GPL(__rtnl_link_register
);
317 * rtnl_link_register - Register rtnl_link_ops with rtnetlink.
318 * @ops: struct rtnl_link_ops * to register
320 * Returns 0 on success or a negative error code.
322 int rtnl_link_register(struct rtnl_link_ops
*ops
)
327 err
= __rtnl_link_register(ops
);
331 EXPORT_SYMBOL_GPL(rtnl_link_register
);
333 static void __rtnl_kill_links(struct net
*net
, struct rtnl_link_ops
*ops
)
335 struct net_device
*dev
;
336 LIST_HEAD(list_kill
);
338 for_each_netdev(net
, dev
) {
339 if (dev
->rtnl_link_ops
== ops
)
340 ops
->dellink(dev
, &list_kill
);
342 unregister_netdevice_many(&list_kill
);
346 * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
347 * @ops: struct rtnl_link_ops * to unregister
349 * The caller must hold the rtnl_mutex.
351 void __rtnl_link_unregister(struct rtnl_link_ops
*ops
)
356 __rtnl_kill_links(net
, ops
);
358 list_del(&ops
->list
);
360 EXPORT_SYMBOL_GPL(__rtnl_link_unregister
);
362 /* Return with the rtnl_lock held when there are no network
363 * devices unregistering in any network namespace.
365 static void rtnl_lock_unregistering_all(void)
372 prepare_to_wait(&netdev_unregistering_wq
, &wait
,
373 TASK_UNINTERRUPTIBLE
);
374 unregistering
= false;
377 if (net
->dev_unreg_count
> 0) {
378 unregistering
= true;
387 finish_wait(&netdev_unregistering_wq
, &wait
);
391 * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
392 * @ops: struct rtnl_link_ops * to unregister
394 void rtnl_link_unregister(struct rtnl_link_ops
*ops
)
396 /* Close the race with cleanup_net() */
397 mutex_lock(&net_mutex
);
398 rtnl_lock_unregistering_all();
399 __rtnl_link_unregister(ops
);
401 mutex_unlock(&net_mutex
);
403 EXPORT_SYMBOL_GPL(rtnl_link_unregister
);
405 static size_t rtnl_link_get_slave_info_data_size(const struct net_device
*dev
)
407 struct net_device
*master_dev
;
408 const struct rtnl_link_ops
*ops
;
410 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
413 ops
= master_dev
->rtnl_link_ops
;
414 if (!ops
|| !ops
->get_slave_size
)
416 /* IFLA_INFO_SLAVE_DATA + nested data */
417 return nla_total_size(sizeof(struct nlattr
)) +
418 ops
->get_slave_size(master_dev
, dev
);
421 static size_t rtnl_link_get_size(const struct net_device
*dev
)
423 const struct rtnl_link_ops
*ops
= dev
->rtnl_link_ops
;
429 size
= nla_total_size(sizeof(struct nlattr
)) + /* IFLA_LINKINFO */
430 nla_total_size(strlen(ops
->kind
) + 1); /* IFLA_INFO_KIND */
433 /* IFLA_INFO_DATA + nested data */
434 size
+= nla_total_size(sizeof(struct nlattr
)) +
437 if (ops
->get_xstats_size
)
438 /* IFLA_INFO_XSTATS */
439 size
+= nla_total_size(ops
->get_xstats_size(dev
));
441 size
+= rtnl_link_get_slave_info_data_size(dev
);
446 static LIST_HEAD(rtnl_af_ops
);
448 static const struct rtnl_af_ops
*rtnl_af_lookup(const int family
)
450 const struct rtnl_af_ops
*ops
;
452 list_for_each_entry(ops
, &rtnl_af_ops
, list
) {
453 if (ops
->family
== family
)
461 * rtnl_af_register - Register rtnl_af_ops with rtnetlink.
462 * @ops: struct rtnl_af_ops * to register
464 * Returns 0 on success or a negative error code.
466 void rtnl_af_register(struct rtnl_af_ops
*ops
)
469 list_add_tail(&ops
->list
, &rtnl_af_ops
);
472 EXPORT_SYMBOL_GPL(rtnl_af_register
);
475 * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
476 * @ops: struct rtnl_af_ops * to unregister
478 * The caller must hold the rtnl_mutex.
480 void __rtnl_af_unregister(struct rtnl_af_ops
*ops
)
482 list_del(&ops
->list
);
484 EXPORT_SYMBOL_GPL(__rtnl_af_unregister
);
487 * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
488 * @ops: struct rtnl_af_ops * to unregister
490 void rtnl_af_unregister(struct rtnl_af_ops
*ops
)
493 __rtnl_af_unregister(ops
);
496 EXPORT_SYMBOL_GPL(rtnl_af_unregister
);
498 static size_t rtnl_link_get_af_size(const struct net_device
*dev
)
500 struct rtnl_af_ops
*af_ops
;
504 size
= nla_total_size(sizeof(struct nlattr
));
506 list_for_each_entry(af_ops
, &rtnl_af_ops
, list
) {
507 if (af_ops
->get_link_af_size
) {
508 /* AF_* + nested data */
509 size
+= nla_total_size(sizeof(struct nlattr
)) +
510 af_ops
->get_link_af_size(dev
);
517 static bool rtnl_have_link_slave_info(const struct net_device
*dev
)
519 struct net_device
*master_dev
;
521 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
522 if (master_dev
&& master_dev
->rtnl_link_ops
)
527 static int rtnl_link_slave_info_fill(struct sk_buff
*skb
,
528 const struct net_device
*dev
)
530 struct net_device
*master_dev
;
531 const struct rtnl_link_ops
*ops
;
532 struct nlattr
*slave_data
;
535 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
538 ops
= master_dev
->rtnl_link_ops
;
541 if (nla_put_string(skb
, IFLA_INFO_SLAVE_KIND
, ops
->kind
) < 0)
543 if (ops
->fill_slave_info
) {
544 slave_data
= nla_nest_start(skb
, IFLA_INFO_SLAVE_DATA
);
547 err
= ops
->fill_slave_info(skb
, master_dev
, dev
);
549 goto err_cancel_slave_data
;
550 nla_nest_end(skb
, slave_data
);
554 err_cancel_slave_data
:
555 nla_nest_cancel(skb
, slave_data
);
559 static int rtnl_link_info_fill(struct sk_buff
*skb
,
560 const struct net_device
*dev
)
562 const struct rtnl_link_ops
*ops
= dev
->rtnl_link_ops
;
568 if (nla_put_string(skb
, IFLA_INFO_KIND
, ops
->kind
) < 0)
570 if (ops
->fill_xstats
) {
571 err
= ops
->fill_xstats(skb
, dev
);
575 if (ops
->fill_info
) {
576 data
= nla_nest_start(skb
, IFLA_INFO_DATA
);
579 err
= ops
->fill_info(skb
, dev
);
581 goto err_cancel_data
;
582 nla_nest_end(skb
, data
);
587 nla_nest_cancel(skb
, data
);
591 static int rtnl_link_fill(struct sk_buff
*skb
, const struct net_device
*dev
)
593 struct nlattr
*linkinfo
;
596 linkinfo
= nla_nest_start(skb
, IFLA_LINKINFO
);
597 if (linkinfo
== NULL
)
600 err
= rtnl_link_info_fill(skb
, dev
);
602 goto err_cancel_link
;
604 err
= rtnl_link_slave_info_fill(skb
, dev
);
606 goto err_cancel_link
;
608 nla_nest_end(skb
, linkinfo
);
612 nla_nest_cancel(skb
, linkinfo
);
617 int rtnetlink_send(struct sk_buff
*skb
, struct net
*net
, u32 pid
, unsigned int group
, int echo
)
619 struct sock
*rtnl
= net
->rtnl
;
622 NETLINK_CB(skb
).dst_group
= group
;
624 atomic_inc(&skb
->users
);
625 netlink_broadcast(rtnl
, skb
, pid
, group
, GFP_KERNEL
);
627 err
= netlink_unicast(rtnl
, skb
, pid
, MSG_DONTWAIT
);
631 int rtnl_unicast(struct sk_buff
*skb
, struct net
*net
, u32 pid
)
633 struct sock
*rtnl
= net
->rtnl
;
635 return nlmsg_unicast(rtnl
, skb
, pid
);
637 EXPORT_SYMBOL(rtnl_unicast
);
639 void rtnl_notify(struct sk_buff
*skb
, struct net
*net
, u32 pid
, u32 group
,
640 struct nlmsghdr
*nlh
, gfp_t flags
)
642 struct sock
*rtnl
= net
->rtnl
;
646 report
= nlmsg_report(nlh
);
648 nlmsg_notify(rtnl
, skb
, pid
, group
, report
, flags
);
650 EXPORT_SYMBOL(rtnl_notify
);
652 void rtnl_set_sk_err(struct net
*net
, u32 group
, int error
)
654 struct sock
*rtnl
= net
->rtnl
;
656 netlink_set_err(rtnl
, 0, group
, error
);
658 EXPORT_SYMBOL(rtnl_set_sk_err
);
660 int rtnetlink_put_metrics(struct sk_buff
*skb
, u32
*metrics
)
665 mx
= nla_nest_start(skb
, RTA_METRICS
);
669 for (i
= 0; i
< RTAX_MAX
; i
++) {
672 if (nla_put_u32(skb
, i
+1, metrics
[i
]))
673 goto nla_put_failure
;
678 nla_nest_cancel(skb
, mx
);
682 return nla_nest_end(skb
, mx
);
685 nla_nest_cancel(skb
, mx
);
688 EXPORT_SYMBOL(rtnetlink_put_metrics
);
690 int rtnl_put_cacheinfo(struct sk_buff
*skb
, struct dst_entry
*dst
, u32 id
,
691 long expires
, u32 error
)
693 struct rta_cacheinfo ci
= {
694 .rta_lastuse
= jiffies_delta_to_clock_t(jiffies
- dst
->lastuse
),
695 .rta_used
= dst
->__use
,
696 .rta_clntref
= atomic_read(&(dst
->__refcnt
)),
704 clock
= jiffies_to_clock_t(abs(expires
));
705 clock
= min_t(unsigned long, clock
, INT_MAX
);
706 ci
.rta_expires
= (expires
> 0) ? clock
: -clock
;
708 return nla_put(skb
, RTA_CACHEINFO
, sizeof(ci
), &ci
);
710 EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo
);
712 static void set_operstate(struct net_device
*dev
, unsigned char transition
)
714 unsigned char operstate
= dev
->operstate
;
716 switch (transition
) {
718 if ((operstate
== IF_OPER_DORMANT
||
719 operstate
== IF_OPER_UNKNOWN
) &&
721 operstate
= IF_OPER_UP
;
724 case IF_OPER_DORMANT
:
725 if (operstate
== IF_OPER_UP
||
726 operstate
== IF_OPER_UNKNOWN
)
727 operstate
= IF_OPER_DORMANT
;
731 if (dev
->operstate
!= operstate
) {
732 write_lock_bh(&dev_base_lock
);
733 dev
->operstate
= operstate
;
734 write_unlock_bh(&dev_base_lock
);
735 netdev_state_change(dev
);
739 static unsigned int rtnl_dev_get_flags(const struct net_device
*dev
)
741 return (dev
->flags
& ~(IFF_PROMISC
| IFF_ALLMULTI
)) |
742 (dev
->gflags
& (IFF_PROMISC
| IFF_ALLMULTI
));
745 static unsigned int rtnl_dev_combine_flags(const struct net_device
*dev
,
746 const struct ifinfomsg
*ifm
)
748 unsigned int flags
= ifm
->ifi_flags
;
750 /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
752 flags
= (flags
& ifm
->ifi_change
) |
753 (rtnl_dev_get_flags(dev
) & ~ifm
->ifi_change
);
758 static void copy_rtnl_link_stats(struct rtnl_link_stats
*a
,
759 const struct rtnl_link_stats64
*b
)
761 a
->rx_packets
= b
->rx_packets
;
762 a
->tx_packets
= b
->tx_packets
;
763 a
->rx_bytes
= b
->rx_bytes
;
764 a
->tx_bytes
= b
->tx_bytes
;
765 a
->rx_errors
= b
->rx_errors
;
766 a
->tx_errors
= b
->tx_errors
;
767 a
->rx_dropped
= b
->rx_dropped
;
768 a
->tx_dropped
= b
->tx_dropped
;
770 a
->multicast
= b
->multicast
;
771 a
->collisions
= b
->collisions
;
773 a
->rx_length_errors
= b
->rx_length_errors
;
774 a
->rx_over_errors
= b
->rx_over_errors
;
775 a
->rx_crc_errors
= b
->rx_crc_errors
;
776 a
->rx_frame_errors
= b
->rx_frame_errors
;
777 a
->rx_fifo_errors
= b
->rx_fifo_errors
;
778 a
->rx_missed_errors
= b
->rx_missed_errors
;
780 a
->tx_aborted_errors
= b
->tx_aborted_errors
;
781 a
->tx_carrier_errors
= b
->tx_carrier_errors
;
782 a
->tx_fifo_errors
= b
->tx_fifo_errors
;
783 a
->tx_heartbeat_errors
= b
->tx_heartbeat_errors
;
784 a
->tx_window_errors
= b
->tx_window_errors
;
786 a
->rx_compressed
= b
->rx_compressed
;
787 a
->tx_compressed
= b
->tx_compressed
;
790 static void copy_rtnl_link_stats64(void *v
, const struct rtnl_link_stats64
*b
)
792 memcpy(v
, b
, sizeof(*b
));
796 static inline int rtnl_vfinfo_size(const struct net_device
*dev
,
799 if (dev
->dev
.parent
&& dev_is_pci(dev
->dev
.parent
) &&
800 (ext_filter_mask
& RTEXT_FILTER_VF
)) {
801 int num_vfs
= dev_num_vf(dev
->dev
.parent
);
802 size_t size
= nla_total_size(sizeof(struct nlattr
));
803 size
+= nla_total_size(num_vfs
* sizeof(struct nlattr
));
805 (nla_total_size(sizeof(struct ifla_vf_mac
)) +
806 nla_total_size(sizeof(struct ifla_vf_vlan
)) +
807 nla_total_size(sizeof(struct ifla_vf_spoofchk
)) +
808 nla_total_size(sizeof(struct ifla_vf_rate
)) +
809 nla_total_size(sizeof(struct ifla_vf_link_state
)));
815 static size_t rtnl_port_size(const struct net_device
*dev
,
818 size_t port_size
= nla_total_size(4) /* PORT_VF */
819 + nla_total_size(PORT_PROFILE_MAX
) /* PORT_PROFILE */
820 + nla_total_size(sizeof(struct ifla_port_vsi
))
822 + nla_total_size(PORT_UUID_MAX
) /* PORT_INSTANCE_UUID */
823 + nla_total_size(PORT_UUID_MAX
) /* PORT_HOST_UUID */
824 + nla_total_size(1) /* PROT_VDP_REQUEST */
825 + nla_total_size(2); /* PORT_VDP_RESPONSE */
826 size_t vf_ports_size
= nla_total_size(sizeof(struct nlattr
));
827 size_t vf_port_size
= nla_total_size(sizeof(struct nlattr
))
829 size_t port_self_size
= nla_total_size(sizeof(struct nlattr
))
832 if (!dev
->netdev_ops
->ndo_get_vf_port
|| !dev
->dev
.parent
||
833 !(ext_filter_mask
& RTEXT_FILTER_VF
))
835 if (dev_num_vf(dev
->dev
.parent
))
836 return port_self_size
+ vf_ports_size
+
837 vf_port_size
* dev_num_vf(dev
->dev
.parent
);
839 return port_self_size
;
842 static noinline
size_t if_nlmsg_size(const struct net_device
*dev
,
845 return NLMSG_ALIGN(sizeof(struct ifinfomsg
))
846 + nla_total_size(IFNAMSIZ
) /* IFLA_IFNAME */
847 + nla_total_size(IFALIASZ
) /* IFLA_IFALIAS */
848 + nla_total_size(IFNAMSIZ
) /* IFLA_QDISC */
849 + nla_total_size(sizeof(struct rtnl_link_ifmap
))
850 + nla_total_size(sizeof(struct rtnl_link_stats
))
851 + nla_total_size(sizeof(struct rtnl_link_stats64
))
852 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_ADDRESS */
853 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_BROADCAST */
854 + nla_total_size(4) /* IFLA_TXQLEN */
855 + nla_total_size(4) /* IFLA_WEIGHT */
856 + nla_total_size(4) /* IFLA_MTU */
857 + nla_total_size(4) /* IFLA_LINK */
858 + nla_total_size(4) /* IFLA_MASTER */
859 + nla_total_size(1) /* IFLA_CARRIER */
860 + nla_total_size(4) /* IFLA_PROMISCUITY */
861 + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */
862 + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */
863 + nla_total_size(1) /* IFLA_OPERSTATE */
864 + nla_total_size(1) /* IFLA_LINKMODE */
865 + nla_total_size(4) /* IFLA_CARRIER_CHANGES */
866 + nla_total_size(ext_filter_mask
867 & RTEXT_FILTER_VF
? 4 : 0) /* IFLA_NUM_VF */
868 + rtnl_vfinfo_size(dev
, ext_filter_mask
) /* IFLA_VFINFO_LIST */
869 + rtnl_port_size(dev
, ext_filter_mask
) /* IFLA_VF_PORTS + IFLA_PORT_SELF */
870 + rtnl_link_get_size(dev
) /* IFLA_LINKINFO */
871 + rtnl_link_get_af_size(dev
) /* IFLA_AF_SPEC */
872 + nla_total_size(MAX_PHYS_ITEM_ID_LEN
); /* IFLA_PHYS_PORT_ID */
875 static int rtnl_vf_ports_fill(struct sk_buff
*skb
, struct net_device
*dev
)
877 struct nlattr
*vf_ports
;
878 struct nlattr
*vf_port
;
882 vf_ports
= nla_nest_start(skb
, IFLA_VF_PORTS
);
886 for (vf
= 0; vf
< dev_num_vf(dev
->dev
.parent
); vf
++) {
887 vf_port
= nla_nest_start(skb
, IFLA_VF_PORT
);
889 goto nla_put_failure
;
890 if (nla_put_u32(skb
, IFLA_PORT_VF
, vf
))
891 goto nla_put_failure
;
892 err
= dev
->netdev_ops
->ndo_get_vf_port(dev
, vf
, skb
);
893 if (err
== -EMSGSIZE
)
894 goto nla_put_failure
;
896 nla_nest_cancel(skb
, vf_port
);
899 nla_nest_end(skb
, vf_port
);
902 nla_nest_end(skb
, vf_ports
);
907 nla_nest_cancel(skb
, vf_ports
);
911 static int rtnl_port_self_fill(struct sk_buff
*skb
, struct net_device
*dev
)
913 struct nlattr
*port_self
;
916 port_self
= nla_nest_start(skb
, IFLA_PORT_SELF
);
920 err
= dev
->netdev_ops
->ndo_get_vf_port(dev
, PORT_SELF_VF
, skb
);
922 nla_nest_cancel(skb
, port_self
);
923 return (err
== -EMSGSIZE
) ? err
: 0;
926 nla_nest_end(skb
, port_self
);
931 static int rtnl_port_fill(struct sk_buff
*skb
, struct net_device
*dev
,
936 if (!dev
->netdev_ops
->ndo_get_vf_port
|| !dev
->dev
.parent
||
937 !(ext_filter_mask
& RTEXT_FILTER_VF
))
940 err
= rtnl_port_self_fill(skb
, dev
);
944 if (dev_num_vf(dev
->dev
.parent
)) {
945 err
= rtnl_vf_ports_fill(skb
, dev
);
953 static int rtnl_phys_port_id_fill(struct sk_buff
*skb
, struct net_device
*dev
)
956 struct netdev_phys_item_id ppid
;
958 err
= dev_get_phys_port_id(dev
, &ppid
);
960 if (err
== -EOPNOTSUPP
)
965 if (nla_put(skb
, IFLA_PHYS_PORT_ID
, ppid
.id_len
, ppid
.id
))
971 static int rtnl_fill_ifinfo(struct sk_buff
*skb
, struct net_device
*dev
,
972 int type
, u32 pid
, u32 seq
, u32 change
,
973 unsigned int flags
, u32 ext_filter_mask
)
975 struct ifinfomsg
*ifm
;
976 struct nlmsghdr
*nlh
;
977 struct rtnl_link_stats64 temp
;
978 const struct rtnl_link_stats64
*stats
;
979 struct nlattr
*attr
, *af_spec
;
980 struct rtnl_af_ops
*af_ops
;
981 struct net_device
*upper_dev
= netdev_master_upper_dev_get(dev
);
984 nlh
= nlmsg_put(skb
, pid
, seq
, type
, sizeof(*ifm
), flags
);
988 ifm
= nlmsg_data(nlh
);
989 ifm
->ifi_family
= AF_UNSPEC
;
991 ifm
->ifi_type
= dev
->type
;
992 ifm
->ifi_index
= dev
->ifindex
;
993 ifm
->ifi_flags
= dev_get_flags(dev
);
994 ifm
->ifi_change
= change
;
996 if (nla_put_string(skb
, IFLA_IFNAME
, dev
->name
) ||
997 nla_put_u32(skb
, IFLA_TXQLEN
, dev
->tx_queue_len
) ||
998 nla_put_u8(skb
, IFLA_OPERSTATE
,
999 netif_running(dev
) ? dev
->operstate
: IF_OPER_DOWN
) ||
1000 nla_put_u8(skb
, IFLA_LINKMODE
, dev
->link_mode
) ||
1001 nla_put_u32(skb
, IFLA_MTU
, dev
->mtu
) ||
1002 nla_put_u32(skb
, IFLA_GROUP
, dev
->group
) ||
1003 nla_put_u32(skb
, IFLA_PROMISCUITY
, dev
->promiscuity
) ||
1004 nla_put_u32(skb
, IFLA_NUM_TX_QUEUES
, dev
->num_tx_queues
) ||
1006 nla_put_u32(skb
, IFLA_NUM_RX_QUEUES
, dev
->num_rx_queues
) ||
1008 (dev
->ifindex
!= dev
->iflink
&&
1009 nla_put_u32(skb
, IFLA_LINK
, dev
->iflink
)) ||
1011 nla_put_u32(skb
, IFLA_MASTER
, upper_dev
->ifindex
)) ||
1012 nla_put_u8(skb
, IFLA_CARRIER
, netif_carrier_ok(dev
)) ||
1014 nla_put_string(skb
, IFLA_QDISC
, dev
->qdisc
->ops
->id
)) ||
1016 nla_put_string(skb
, IFLA_IFALIAS
, dev
->ifalias
)) ||
1017 nla_put_u32(skb
, IFLA_CARRIER_CHANGES
,
1018 atomic_read(&dev
->carrier_changes
)))
1019 goto nla_put_failure
;
1022 struct rtnl_link_ifmap map
= {
1023 .mem_start
= dev
->mem_start
,
1024 .mem_end
= dev
->mem_end
,
1025 .base_addr
= dev
->base_addr
,
1028 .port
= dev
->if_port
,
1030 if (nla_put(skb
, IFLA_MAP
, sizeof(map
), &map
))
1031 goto nla_put_failure
;
1034 if (dev
->addr_len
) {
1035 if (nla_put(skb
, IFLA_ADDRESS
, dev
->addr_len
, dev
->dev_addr
) ||
1036 nla_put(skb
, IFLA_BROADCAST
, dev
->addr_len
, dev
->broadcast
))
1037 goto nla_put_failure
;
1040 if (rtnl_phys_port_id_fill(skb
, dev
))
1041 goto nla_put_failure
;
1043 attr
= nla_reserve(skb
, IFLA_STATS
,
1044 sizeof(struct rtnl_link_stats
));
1046 goto nla_put_failure
;
1048 stats
= dev_get_stats(dev
, &temp
);
1049 copy_rtnl_link_stats(nla_data(attr
), stats
);
1051 attr
= nla_reserve(skb
, IFLA_STATS64
,
1052 sizeof(struct rtnl_link_stats64
));
1054 goto nla_put_failure
;
1055 copy_rtnl_link_stats64(nla_data(attr
), stats
);
1057 if (dev
->dev
.parent
&& (ext_filter_mask
& RTEXT_FILTER_VF
) &&
1058 nla_put_u32(skb
, IFLA_NUM_VF
, dev_num_vf(dev
->dev
.parent
)))
1059 goto nla_put_failure
;
1061 if (dev
->netdev_ops
->ndo_get_vf_config
&& dev
->dev
.parent
1062 && (ext_filter_mask
& RTEXT_FILTER_VF
)) {
1065 struct nlattr
*vfinfo
, *vf
;
1066 int num_vfs
= dev_num_vf(dev
->dev
.parent
);
1068 vfinfo
= nla_nest_start(skb
, IFLA_VFINFO_LIST
);
1070 goto nla_put_failure
;
1071 for (i
= 0; i
< num_vfs
; i
++) {
1072 struct ifla_vf_info ivi
;
1073 struct ifla_vf_mac vf_mac
;
1074 struct ifla_vf_vlan vf_vlan
;
1075 struct ifla_vf_rate vf_rate
;
1076 struct ifla_vf_tx_rate vf_tx_rate
;
1077 struct ifla_vf_spoofchk vf_spoofchk
;
1078 struct ifla_vf_link_state vf_linkstate
;
1081 * Not all SR-IOV capable drivers support the
1082 * spoofcheck query. Preset to -1 so the user
1083 * space tool can detect that the driver didn't
1087 memset(ivi
.mac
, 0, sizeof(ivi
.mac
));
1088 /* The default value for VF link state is "auto"
1089 * IFLA_VF_LINK_STATE_AUTO which equals zero
1092 if (dev
->netdev_ops
->ndo_get_vf_config(dev
, i
, &ivi
))
1099 vf_linkstate
.vf
= ivi
.vf
;
1101 memcpy(vf_mac
.mac
, ivi
.mac
, sizeof(ivi
.mac
));
1102 vf_vlan
.vlan
= ivi
.vlan
;
1103 vf_vlan
.qos
= ivi
.qos
;
1104 vf_tx_rate
.rate
= ivi
.max_tx_rate
;
1105 vf_rate
.min_tx_rate
= ivi
.min_tx_rate
;
1106 vf_rate
.max_tx_rate
= ivi
.max_tx_rate
;
1107 vf_spoofchk
.setting
= ivi
.spoofchk
;
1108 vf_linkstate
.link_state
= ivi
.linkstate
;
1109 vf
= nla_nest_start(skb
, IFLA_VF_INFO
);
1111 nla_nest_cancel(skb
, vfinfo
);
1112 goto nla_put_failure
;
1114 if (nla_put(skb
, IFLA_VF_MAC
, sizeof(vf_mac
), &vf_mac
) ||
1115 nla_put(skb
, IFLA_VF_VLAN
, sizeof(vf_vlan
), &vf_vlan
) ||
1116 nla_put(skb
, IFLA_VF_RATE
, sizeof(vf_rate
),
1118 nla_put(skb
, IFLA_VF_TX_RATE
, sizeof(vf_tx_rate
),
1120 nla_put(skb
, IFLA_VF_SPOOFCHK
, sizeof(vf_spoofchk
),
1122 nla_put(skb
, IFLA_VF_LINK_STATE
, sizeof(vf_linkstate
),
1124 goto nla_put_failure
;
1125 nla_nest_end(skb
, vf
);
1127 nla_nest_end(skb
, vfinfo
);
1130 if (rtnl_port_fill(skb
, dev
, ext_filter_mask
))
1131 goto nla_put_failure
;
1133 if (dev
->rtnl_link_ops
|| rtnl_have_link_slave_info(dev
)) {
1134 if (rtnl_link_fill(skb
, dev
) < 0)
1135 goto nla_put_failure
;
1138 if (!(af_spec
= nla_nest_start(skb
, IFLA_AF_SPEC
)))
1139 goto nla_put_failure
;
1141 list_for_each_entry(af_ops
, &rtnl_af_ops
, list
) {
1142 if (af_ops
->fill_link_af
) {
1146 if (!(af
= nla_nest_start(skb
, af_ops
->family
)))
1147 goto nla_put_failure
;
1149 err
= af_ops
->fill_link_af(skb
, dev
);
1152 * Caller may return ENODATA to indicate that there
1153 * was no data to be dumped. This is not an error, it
1154 * means we should trim the attribute header and
1157 if (err
== -ENODATA
)
1158 nla_nest_cancel(skb
, af
);
1160 goto nla_put_failure
;
1162 nla_nest_end(skb
, af
);
1166 nla_nest_end(skb
, af_spec
);
1168 return nlmsg_end(skb
, nlh
);
1171 nlmsg_cancel(skb
, nlh
);
1175 static const struct nla_policy ifla_policy
[IFLA_MAX
+1] = {
1176 [IFLA_IFNAME
] = { .type
= NLA_STRING
, .len
= IFNAMSIZ
-1 },
1177 [IFLA_ADDRESS
] = { .type
= NLA_BINARY
, .len
= MAX_ADDR_LEN
},
1178 [IFLA_BROADCAST
] = { .type
= NLA_BINARY
, .len
= MAX_ADDR_LEN
},
1179 [IFLA_MAP
] = { .len
= sizeof(struct rtnl_link_ifmap
) },
1180 [IFLA_MTU
] = { .type
= NLA_U32
},
1181 [IFLA_LINK
] = { .type
= NLA_U32
},
1182 [IFLA_MASTER
] = { .type
= NLA_U32
},
1183 [IFLA_CARRIER
] = { .type
= NLA_U8
},
1184 [IFLA_TXQLEN
] = { .type
= NLA_U32
},
1185 [IFLA_WEIGHT
] = { .type
= NLA_U32
},
1186 [IFLA_OPERSTATE
] = { .type
= NLA_U8
},
1187 [IFLA_LINKMODE
] = { .type
= NLA_U8
},
1188 [IFLA_LINKINFO
] = { .type
= NLA_NESTED
},
1189 [IFLA_NET_NS_PID
] = { .type
= NLA_U32
},
1190 [IFLA_NET_NS_FD
] = { .type
= NLA_U32
},
1191 [IFLA_IFALIAS
] = { .type
= NLA_STRING
, .len
= IFALIASZ
-1 },
1192 [IFLA_VFINFO_LIST
] = {. type
= NLA_NESTED
},
1193 [IFLA_VF_PORTS
] = { .type
= NLA_NESTED
},
1194 [IFLA_PORT_SELF
] = { .type
= NLA_NESTED
},
1195 [IFLA_AF_SPEC
] = { .type
= NLA_NESTED
},
1196 [IFLA_EXT_MASK
] = { .type
= NLA_U32
},
1197 [IFLA_PROMISCUITY
] = { .type
= NLA_U32
},
1198 [IFLA_NUM_TX_QUEUES
] = { .type
= NLA_U32
},
1199 [IFLA_NUM_RX_QUEUES
] = { .type
= NLA_U32
},
1200 [IFLA_PHYS_PORT_ID
] = { .type
= NLA_BINARY
, .len
= MAX_PHYS_ITEM_ID_LEN
},
1201 [IFLA_CARRIER_CHANGES
] = { .type
= NLA_U32
}, /* ignored */
1204 static const struct nla_policy ifla_info_policy
[IFLA_INFO_MAX
+1] = {
1205 [IFLA_INFO_KIND
] = { .type
= NLA_STRING
},
1206 [IFLA_INFO_DATA
] = { .type
= NLA_NESTED
},
1207 [IFLA_INFO_SLAVE_KIND
] = { .type
= NLA_STRING
},
1208 [IFLA_INFO_SLAVE_DATA
] = { .type
= NLA_NESTED
},
1211 static const struct nla_policy ifla_vfinfo_policy
[IFLA_VF_INFO_MAX
+1] = {
1212 [IFLA_VF_INFO
] = { .type
= NLA_NESTED
},
1215 static const struct nla_policy ifla_vf_policy
[IFLA_VF_MAX
+1] = {
1216 [IFLA_VF_MAC
] = { .type
= NLA_BINARY
,
1217 .len
= sizeof(struct ifla_vf_mac
) },
1218 [IFLA_VF_VLAN
] = { .type
= NLA_BINARY
,
1219 .len
= sizeof(struct ifla_vf_vlan
) },
1220 [IFLA_VF_TX_RATE
] = { .type
= NLA_BINARY
,
1221 .len
= sizeof(struct ifla_vf_tx_rate
) },
1222 [IFLA_VF_SPOOFCHK
] = { .type
= NLA_BINARY
,
1223 .len
= sizeof(struct ifla_vf_spoofchk
) },
1224 [IFLA_VF_RATE
] = { .type
= NLA_BINARY
,
1225 .len
= sizeof(struct ifla_vf_rate
) },
1226 [IFLA_VF_LINK_STATE
] = { .type
= NLA_BINARY
,
1227 .len
= sizeof(struct ifla_vf_link_state
) },
1230 static const struct nla_policy ifla_port_policy
[IFLA_PORT_MAX
+1] = {
1231 [IFLA_PORT_VF
] = { .type
= NLA_U32
},
1232 [IFLA_PORT_PROFILE
] = { .type
= NLA_STRING
,
1233 .len
= PORT_PROFILE_MAX
},
1234 [IFLA_PORT_VSI_TYPE
] = { .type
= NLA_BINARY
,
1235 .len
= sizeof(struct ifla_port_vsi
)},
1236 [IFLA_PORT_INSTANCE_UUID
] = { .type
= NLA_BINARY
,
1237 .len
= PORT_UUID_MAX
},
1238 [IFLA_PORT_HOST_UUID
] = { .type
= NLA_STRING
,
1239 .len
= PORT_UUID_MAX
},
1240 [IFLA_PORT_REQUEST
] = { .type
= NLA_U8
, },
1241 [IFLA_PORT_RESPONSE
] = { .type
= NLA_U16
, },
1244 static int rtnl_dump_ifinfo(struct sk_buff
*skb
, struct netlink_callback
*cb
)
1246 struct net
*net
= sock_net(skb
->sk
);
1249 struct net_device
*dev
;
1250 struct hlist_head
*head
;
1251 struct nlattr
*tb
[IFLA_MAX
+1];
1252 u32 ext_filter_mask
= 0;
1257 s_idx
= cb
->args
[1];
1260 cb
->seq
= net
->dev_base_seq
;
1262 /* A hack to preserve kernel<->userspace interface.
1263 * The correct header is ifinfomsg. It is consistent with rtnl_getlink.
1264 * However, before Linux v3.9 the code here assumed rtgenmsg and that's
1265 * what iproute2 < v3.9.0 used.
1266 * We can detect the old iproute2. Even including the IFLA_EXT_MASK
1267 * attribute, its netlink message is shorter than struct ifinfomsg.
1269 hdrlen
= nlmsg_len(cb
->nlh
) < sizeof(struct ifinfomsg
) ?
1270 sizeof(struct rtgenmsg
) : sizeof(struct ifinfomsg
);
1272 if (nlmsg_parse(cb
->nlh
, hdrlen
, tb
, IFLA_MAX
, ifla_policy
) >= 0) {
1274 if (tb
[IFLA_EXT_MASK
])
1275 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
1278 for (h
= s_h
; h
< NETDEV_HASHENTRIES
; h
++, s_idx
= 0) {
1280 head
= &net
->dev_index_head
[h
];
1281 hlist_for_each_entry_rcu(dev
, head
, index_hlist
) {
1284 err
= rtnl_fill_ifinfo(skb
, dev
, RTM_NEWLINK
,
1285 NETLINK_CB(cb
->skb
).portid
,
1286 cb
->nlh
->nlmsg_seq
, 0,
1289 /* If we ran out of room on the first message,
1292 WARN_ON((err
== -EMSGSIZE
) && (skb
->len
== 0));
1297 nl_dump_check_consistent(cb
, nlmsg_hdr(skb
));
1310 int rtnl_nla_parse_ifla(struct nlattr
**tb
, const struct nlattr
*head
, int len
)
1312 return nla_parse(tb
, IFLA_MAX
, head
, len
, ifla_policy
);
1314 EXPORT_SYMBOL(rtnl_nla_parse_ifla
);
1316 struct net
*rtnl_link_get_net(struct net
*src_net
, struct nlattr
*tb
[])
1319 /* Examine the link attributes and figure out which
1320 * network namespace we are talking about.
1322 if (tb
[IFLA_NET_NS_PID
])
1323 net
= get_net_ns_by_pid(nla_get_u32(tb
[IFLA_NET_NS_PID
]));
1324 else if (tb
[IFLA_NET_NS_FD
])
1325 net
= get_net_ns_by_fd(nla_get_u32(tb
[IFLA_NET_NS_FD
]));
1327 net
= get_net(src_net
);
1330 EXPORT_SYMBOL(rtnl_link_get_net
);
1332 static int validate_linkmsg(struct net_device
*dev
, struct nlattr
*tb
[])
1335 if (tb
[IFLA_ADDRESS
] &&
1336 nla_len(tb
[IFLA_ADDRESS
]) < dev
->addr_len
)
1339 if (tb
[IFLA_BROADCAST
] &&
1340 nla_len(tb
[IFLA_BROADCAST
]) < dev
->addr_len
)
1344 if (tb
[IFLA_AF_SPEC
]) {
1348 nla_for_each_nested(af
, tb
[IFLA_AF_SPEC
], rem
) {
1349 const struct rtnl_af_ops
*af_ops
;
1351 if (!(af_ops
= rtnl_af_lookup(nla_type(af
))))
1352 return -EAFNOSUPPORT
;
1354 if (!af_ops
->set_link_af
)
1357 if (af_ops
->validate_link_af
) {
1358 err
= af_ops
->validate_link_af(dev
, af
);
1368 static int do_setvfinfo(struct net_device
*dev
, struct nlattr
*attr
)
1370 int rem
, err
= -EINVAL
;
1372 const struct net_device_ops
*ops
= dev
->netdev_ops
;
1374 nla_for_each_nested(vf
, attr
, rem
) {
1375 switch (nla_type(vf
)) {
1377 struct ifla_vf_mac
*ivm
;
1380 if (ops
->ndo_set_vf_mac
)
1381 err
= ops
->ndo_set_vf_mac(dev
, ivm
->vf
,
1385 case IFLA_VF_VLAN
: {
1386 struct ifla_vf_vlan
*ivv
;
1389 if (ops
->ndo_set_vf_vlan
)
1390 err
= ops
->ndo_set_vf_vlan(dev
, ivv
->vf
,
1395 case IFLA_VF_TX_RATE
: {
1396 struct ifla_vf_tx_rate
*ivt
;
1397 struct ifla_vf_info ivf
;
1400 if (ops
->ndo_get_vf_config
)
1401 err
= ops
->ndo_get_vf_config(dev
, ivt
->vf
,
1406 if (ops
->ndo_set_vf_rate
)
1407 err
= ops
->ndo_set_vf_rate(dev
, ivt
->vf
,
1412 case IFLA_VF_RATE
: {
1413 struct ifla_vf_rate
*ivt
;
1416 if (ops
->ndo_set_vf_rate
)
1417 err
= ops
->ndo_set_vf_rate(dev
, ivt
->vf
,
1422 case IFLA_VF_SPOOFCHK
: {
1423 struct ifla_vf_spoofchk
*ivs
;
1426 if (ops
->ndo_set_vf_spoofchk
)
1427 err
= ops
->ndo_set_vf_spoofchk(dev
, ivs
->vf
,
1431 case IFLA_VF_LINK_STATE
: {
1432 struct ifla_vf_link_state
*ivl
;
1435 if (ops
->ndo_set_vf_link_state
)
1436 err
= ops
->ndo_set_vf_link_state(dev
, ivl
->vf
,
1450 static int do_set_master(struct net_device
*dev
, int ifindex
)
1452 struct net_device
*upper_dev
= netdev_master_upper_dev_get(dev
);
1453 const struct net_device_ops
*ops
;
1457 if (upper_dev
->ifindex
== ifindex
)
1459 ops
= upper_dev
->netdev_ops
;
1460 if (ops
->ndo_del_slave
) {
1461 err
= ops
->ndo_del_slave(upper_dev
, dev
);
1470 upper_dev
= __dev_get_by_index(dev_net(dev
), ifindex
);
1473 ops
= upper_dev
->netdev_ops
;
1474 if (ops
->ndo_add_slave
) {
1475 err
= ops
->ndo_add_slave(upper_dev
, dev
);
1485 #define DO_SETLINK_MODIFIED 0x01
1486 /* notify flag means notify + modified. */
1487 #define DO_SETLINK_NOTIFY 0x03
1488 static int do_setlink(const struct sk_buff
*skb
,
1489 struct net_device
*dev
, struct ifinfomsg
*ifm
,
1490 struct nlattr
**tb
, char *ifname
, int status
)
1492 const struct net_device_ops
*ops
= dev
->netdev_ops
;
1495 if (tb
[IFLA_NET_NS_PID
] || tb
[IFLA_NET_NS_FD
]) {
1496 struct net
*net
= rtnl_link_get_net(dev_net(dev
), tb
);
1501 if (!netlink_ns_capable(skb
, net
->user_ns
, CAP_NET_ADMIN
)) {
1505 err
= dev_change_net_namespace(dev
, net
, ifname
);
1509 status
|= DO_SETLINK_MODIFIED
;
1513 struct rtnl_link_ifmap
*u_map
;
1516 if (!ops
->ndo_set_config
) {
1521 if (!netif_device_present(dev
)) {
1526 u_map
= nla_data(tb
[IFLA_MAP
]);
1527 k_map
.mem_start
= (unsigned long) u_map
->mem_start
;
1528 k_map
.mem_end
= (unsigned long) u_map
->mem_end
;
1529 k_map
.base_addr
= (unsigned short) u_map
->base_addr
;
1530 k_map
.irq
= (unsigned char) u_map
->irq
;
1531 k_map
.dma
= (unsigned char) u_map
->dma
;
1532 k_map
.port
= (unsigned char) u_map
->port
;
1534 err
= ops
->ndo_set_config(dev
, &k_map
);
1538 status
|= DO_SETLINK_NOTIFY
;
1541 if (tb
[IFLA_ADDRESS
]) {
1542 struct sockaddr
*sa
;
1545 len
= sizeof(sa_family_t
) + dev
->addr_len
;
1546 sa
= kmalloc(len
, GFP_KERNEL
);
1551 sa
->sa_family
= dev
->type
;
1552 memcpy(sa
->sa_data
, nla_data(tb
[IFLA_ADDRESS
]),
1554 err
= dev_set_mac_address(dev
, sa
);
1558 status
|= DO_SETLINK_MODIFIED
;
1562 err
= dev_set_mtu(dev
, nla_get_u32(tb
[IFLA_MTU
]));
1565 status
|= DO_SETLINK_MODIFIED
;
1568 if (tb
[IFLA_GROUP
]) {
1569 dev_set_group(dev
, nla_get_u32(tb
[IFLA_GROUP
]));
1570 status
|= DO_SETLINK_NOTIFY
;
1574 * Interface selected by interface index but interface
1575 * name provided implies that a name change has been
1578 if (ifm
->ifi_index
> 0 && ifname
[0]) {
1579 err
= dev_change_name(dev
, ifname
);
1582 status
|= DO_SETLINK_MODIFIED
;
1585 if (tb
[IFLA_IFALIAS
]) {
1586 err
= dev_set_alias(dev
, nla_data(tb
[IFLA_IFALIAS
]),
1587 nla_len(tb
[IFLA_IFALIAS
]));
1590 status
|= DO_SETLINK_NOTIFY
;
1593 if (tb
[IFLA_BROADCAST
]) {
1594 nla_memcpy(dev
->broadcast
, tb
[IFLA_BROADCAST
], dev
->addr_len
);
1595 call_netdevice_notifiers(NETDEV_CHANGEADDR
, dev
);
1598 if (ifm
->ifi_flags
|| ifm
->ifi_change
) {
1599 err
= dev_change_flags(dev
, rtnl_dev_combine_flags(dev
, ifm
));
1604 if (tb
[IFLA_MASTER
]) {
1605 err
= do_set_master(dev
, nla_get_u32(tb
[IFLA_MASTER
]));
1608 status
|= DO_SETLINK_MODIFIED
;
1611 if (tb
[IFLA_CARRIER
]) {
1612 err
= dev_change_carrier(dev
, nla_get_u8(tb
[IFLA_CARRIER
]));
1615 status
|= DO_SETLINK_MODIFIED
;
1618 if (tb
[IFLA_TXQLEN
]) {
1619 unsigned long value
= nla_get_u32(tb
[IFLA_TXQLEN
]);
1621 if (dev
->tx_queue_len
^ value
)
1622 status
|= DO_SETLINK_NOTIFY
;
1624 dev
->tx_queue_len
= value
;
1627 if (tb
[IFLA_OPERSTATE
])
1628 set_operstate(dev
, nla_get_u8(tb
[IFLA_OPERSTATE
]));
1630 if (tb
[IFLA_LINKMODE
]) {
1631 unsigned char value
= nla_get_u8(tb
[IFLA_LINKMODE
]);
1633 write_lock_bh(&dev_base_lock
);
1634 if (dev
->link_mode
^ value
)
1635 status
|= DO_SETLINK_NOTIFY
;
1636 dev
->link_mode
= value
;
1637 write_unlock_bh(&dev_base_lock
);
1640 if (tb
[IFLA_VFINFO_LIST
]) {
1641 struct nlattr
*attr
;
1643 nla_for_each_nested(attr
, tb
[IFLA_VFINFO_LIST
], rem
) {
1644 if (nla_type(attr
) != IFLA_VF_INFO
) {
1648 err
= do_setvfinfo(dev
, attr
);
1651 status
|= DO_SETLINK_NOTIFY
;
1656 if (tb
[IFLA_VF_PORTS
]) {
1657 struct nlattr
*port
[IFLA_PORT_MAX
+1];
1658 struct nlattr
*attr
;
1663 if (!ops
->ndo_set_vf_port
)
1666 nla_for_each_nested(attr
, tb
[IFLA_VF_PORTS
], rem
) {
1667 if (nla_type(attr
) != IFLA_VF_PORT
)
1669 err
= nla_parse_nested(port
, IFLA_PORT_MAX
,
1670 attr
, ifla_port_policy
);
1673 if (!port
[IFLA_PORT_VF
]) {
1677 vf
= nla_get_u32(port
[IFLA_PORT_VF
]);
1678 err
= ops
->ndo_set_vf_port(dev
, vf
, port
);
1681 status
|= DO_SETLINK_NOTIFY
;
1686 if (tb
[IFLA_PORT_SELF
]) {
1687 struct nlattr
*port
[IFLA_PORT_MAX
+1];
1689 err
= nla_parse_nested(port
, IFLA_PORT_MAX
,
1690 tb
[IFLA_PORT_SELF
], ifla_port_policy
);
1695 if (ops
->ndo_set_vf_port
)
1696 err
= ops
->ndo_set_vf_port(dev
, PORT_SELF_VF
, port
);
1699 status
|= DO_SETLINK_NOTIFY
;
1702 if (tb
[IFLA_AF_SPEC
]) {
1706 nla_for_each_nested(af
, tb
[IFLA_AF_SPEC
], rem
) {
1707 const struct rtnl_af_ops
*af_ops
;
1709 if (!(af_ops
= rtnl_af_lookup(nla_type(af
))))
1712 err
= af_ops
->set_link_af(dev
, af
);
1716 status
|= DO_SETLINK_NOTIFY
;
1722 if (status
& DO_SETLINK_MODIFIED
) {
1723 if (status
& DO_SETLINK_NOTIFY
)
1724 netdev_state_change(dev
);
1727 net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n",
1734 static int rtnl_setlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
1736 struct net
*net
= sock_net(skb
->sk
);
1737 struct ifinfomsg
*ifm
;
1738 struct net_device
*dev
;
1740 struct nlattr
*tb
[IFLA_MAX
+1];
1741 char ifname
[IFNAMSIZ
];
1743 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
1747 if (tb
[IFLA_IFNAME
])
1748 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
1753 ifm
= nlmsg_data(nlh
);
1754 if (ifm
->ifi_index
> 0)
1755 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
1756 else if (tb
[IFLA_IFNAME
])
1757 dev
= __dev_get_by_name(net
, ifname
);
1766 err
= validate_linkmsg(dev
, tb
);
1770 err
= do_setlink(skb
, dev
, ifm
, tb
, ifname
, 0);
1775 static int rtnl_dellink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
1777 struct net
*net
= sock_net(skb
->sk
);
1778 const struct rtnl_link_ops
*ops
;
1779 struct net_device
*dev
;
1780 struct ifinfomsg
*ifm
;
1781 char ifname
[IFNAMSIZ
];
1782 struct nlattr
*tb
[IFLA_MAX
+1];
1784 LIST_HEAD(list_kill
);
1786 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
1790 if (tb
[IFLA_IFNAME
])
1791 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
1793 ifm
= nlmsg_data(nlh
);
1794 if (ifm
->ifi_index
> 0)
1795 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
1796 else if (tb
[IFLA_IFNAME
])
1797 dev
= __dev_get_by_name(net
, ifname
);
1804 ops
= dev
->rtnl_link_ops
;
1805 if (!ops
|| !ops
->dellink
)
1808 ops
->dellink(dev
, &list_kill
);
1809 unregister_netdevice_many(&list_kill
);
1813 int rtnl_configure_link(struct net_device
*dev
, const struct ifinfomsg
*ifm
)
1815 unsigned int old_flags
;
1818 old_flags
= dev
->flags
;
1819 if (ifm
&& (ifm
->ifi_flags
|| ifm
->ifi_change
)) {
1820 err
= __dev_change_flags(dev
, rtnl_dev_combine_flags(dev
, ifm
));
1825 dev
->rtnl_link_state
= RTNL_LINK_INITIALIZED
;
1827 __dev_notify_flags(dev
, old_flags
, ~0U);
1830 EXPORT_SYMBOL(rtnl_configure_link
);
1832 struct net_device
*rtnl_create_link(struct net
*net
,
1833 char *ifname
, unsigned char name_assign_type
,
1834 const struct rtnl_link_ops
*ops
, struct nlattr
*tb
[])
1837 struct net_device
*dev
;
1838 unsigned int num_tx_queues
= 1;
1839 unsigned int num_rx_queues
= 1;
1841 if (tb
[IFLA_NUM_TX_QUEUES
])
1842 num_tx_queues
= nla_get_u32(tb
[IFLA_NUM_TX_QUEUES
]);
1843 else if (ops
->get_num_tx_queues
)
1844 num_tx_queues
= ops
->get_num_tx_queues();
1846 if (tb
[IFLA_NUM_RX_QUEUES
])
1847 num_rx_queues
= nla_get_u32(tb
[IFLA_NUM_RX_QUEUES
]);
1848 else if (ops
->get_num_rx_queues
)
1849 num_rx_queues
= ops
->get_num_rx_queues();
1852 dev
= alloc_netdev_mqs(ops
->priv_size
, ifname
, name_assign_type
,
1853 ops
->setup
, num_tx_queues
, num_rx_queues
);
1857 dev_net_set(dev
, net
);
1858 dev
->rtnl_link_ops
= ops
;
1859 dev
->rtnl_link_state
= RTNL_LINK_INITIALIZING
;
1862 dev
->mtu
= nla_get_u32(tb
[IFLA_MTU
]);
1863 if (tb
[IFLA_ADDRESS
]) {
1864 memcpy(dev
->dev_addr
, nla_data(tb
[IFLA_ADDRESS
]),
1865 nla_len(tb
[IFLA_ADDRESS
]));
1866 dev
->addr_assign_type
= NET_ADDR_SET
;
1868 if (tb
[IFLA_BROADCAST
])
1869 memcpy(dev
->broadcast
, nla_data(tb
[IFLA_BROADCAST
]),
1870 nla_len(tb
[IFLA_BROADCAST
]));
1871 if (tb
[IFLA_TXQLEN
])
1872 dev
->tx_queue_len
= nla_get_u32(tb
[IFLA_TXQLEN
]);
1873 if (tb
[IFLA_OPERSTATE
])
1874 set_operstate(dev
, nla_get_u8(tb
[IFLA_OPERSTATE
]));
1875 if (tb
[IFLA_LINKMODE
])
1876 dev
->link_mode
= nla_get_u8(tb
[IFLA_LINKMODE
]);
1878 dev_set_group(dev
, nla_get_u32(tb
[IFLA_GROUP
]));
1883 return ERR_PTR(err
);
1885 EXPORT_SYMBOL(rtnl_create_link
);
1887 static int rtnl_group_changelink(const struct sk_buff
*skb
,
1888 struct net
*net
, int group
,
1889 struct ifinfomsg
*ifm
,
1892 struct net_device
*dev
;
1895 for_each_netdev(net
, dev
) {
1896 if (dev
->group
== group
) {
1897 err
= do_setlink(skb
, dev
, ifm
, tb
, NULL
, 0);
1906 static int rtnl_newlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
1908 struct net
*net
= sock_net(skb
->sk
);
1909 const struct rtnl_link_ops
*ops
;
1910 const struct rtnl_link_ops
*m_ops
= NULL
;
1911 struct net_device
*dev
;
1912 struct net_device
*master_dev
= NULL
;
1913 struct ifinfomsg
*ifm
;
1914 char kind
[MODULE_NAME_LEN
];
1915 char ifname
[IFNAMSIZ
];
1916 struct nlattr
*tb
[IFLA_MAX
+1];
1917 struct nlattr
*linkinfo
[IFLA_INFO_MAX
+1];
1918 unsigned char name_assign_type
= NET_NAME_USER
;
1921 #ifdef CONFIG_MODULES
1924 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
1928 if (tb
[IFLA_IFNAME
])
1929 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
1933 ifm
= nlmsg_data(nlh
);
1934 if (ifm
->ifi_index
> 0)
1935 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
1938 dev
= __dev_get_by_name(net
, ifname
);
1944 master_dev
= netdev_master_upper_dev_get(dev
);
1946 m_ops
= master_dev
->rtnl_link_ops
;
1949 err
= validate_linkmsg(dev
, tb
);
1953 if (tb
[IFLA_LINKINFO
]) {
1954 err
= nla_parse_nested(linkinfo
, IFLA_INFO_MAX
,
1955 tb
[IFLA_LINKINFO
], ifla_info_policy
);
1959 memset(linkinfo
, 0, sizeof(linkinfo
));
1961 if (linkinfo
[IFLA_INFO_KIND
]) {
1962 nla_strlcpy(kind
, linkinfo
[IFLA_INFO_KIND
], sizeof(kind
));
1963 ops
= rtnl_link_ops_get(kind
);
1970 struct nlattr
*attr
[ops
? ops
->maxtype
+ 1 : 0];
1971 struct nlattr
*slave_attr
[m_ops
? m_ops
->slave_maxtype
+ 1 : 0];
1972 struct nlattr
**data
= NULL
;
1973 struct nlattr
**slave_data
= NULL
;
1974 struct net
*dest_net
;
1977 if (ops
->maxtype
&& linkinfo
[IFLA_INFO_DATA
]) {
1978 err
= nla_parse_nested(attr
, ops
->maxtype
,
1979 linkinfo
[IFLA_INFO_DATA
],
1985 if (ops
->validate
) {
1986 err
= ops
->validate(tb
, data
);
1993 if (m_ops
->slave_maxtype
&&
1994 linkinfo
[IFLA_INFO_SLAVE_DATA
]) {
1995 err
= nla_parse_nested(slave_attr
,
1996 m_ops
->slave_maxtype
,
1997 linkinfo
[IFLA_INFO_SLAVE_DATA
],
1998 m_ops
->slave_policy
);
2001 slave_data
= slave_attr
;
2003 if (m_ops
->slave_validate
) {
2004 err
= m_ops
->slave_validate(tb
, slave_data
);
2013 if (nlh
->nlmsg_flags
& NLM_F_EXCL
)
2015 if (nlh
->nlmsg_flags
& NLM_F_REPLACE
)
2018 if (linkinfo
[IFLA_INFO_DATA
]) {
2019 if (!ops
|| ops
!= dev
->rtnl_link_ops
||
2023 err
= ops
->changelink(dev
, tb
, data
);
2026 status
|= DO_SETLINK_NOTIFY
;
2029 if (linkinfo
[IFLA_INFO_SLAVE_DATA
]) {
2030 if (!m_ops
|| !m_ops
->slave_changelink
)
2033 err
= m_ops
->slave_changelink(master_dev
, dev
,
2037 status
|= DO_SETLINK_NOTIFY
;
2040 return do_setlink(skb
, dev
, ifm
, tb
, ifname
, status
);
2043 if (!(nlh
->nlmsg_flags
& NLM_F_CREATE
)) {
2044 if (ifm
->ifi_index
== 0 && tb
[IFLA_GROUP
])
2045 return rtnl_group_changelink(skb
, net
,
2046 nla_get_u32(tb
[IFLA_GROUP
]),
2051 if (tb
[IFLA_MAP
] || tb
[IFLA_MASTER
] || tb
[IFLA_PROTINFO
])
2055 #ifdef CONFIG_MODULES
2058 request_module("rtnl-link-%s", kind
);
2060 ops
= rtnl_link_ops_get(kind
);
2072 snprintf(ifname
, IFNAMSIZ
, "%s%%d", ops
->kind
);
2073 name_assign_type
= NET_NAME_ENUM
;
2076 dest_net
= rtnl_link_get_net(net
, tb
);
2077 if (IS_ERR(dest_net
))
2078 return PTR_ERR(dest_net
);
2080 dev
= rtnl_create_link(dest_net
, ifname
, name_assign_type
, ops
, tb
);
2086 dev
->ifindex
= ifm
->ifi_index
;
2089 err
= ops
->newlink(net
, dev
, tb
, data
);
2090 /* Drivers should call free_netdev() in ->destructor
2091 * and unregister it on failure after registration
2092 * so that device could be finally freed in rtnl_unlock.
2095 /* If device is not registered at all, free it now */
2096 if (dev
->reg_state
== NETREG_UNINITIALIZED
)
2101 err
= register_netdevice(dev
);
2107 err
= rtnl_configure_link(dev
, ifm
);
2109 unregister_netdevice(dev
);
2116 static int rtnl_getlink(struct sk_buff
*skb
, struct nlmsghdr
* nlh
)
2118 struct net
*net
= sock_net(skb
->sk
);
2119 struct ifinfomsg
*ifm
;
2120 char ifname
[IFNAMSIZ
];
2121 struct nlattr
*tb
[IFLA_MAX
+1];
2122 struct net_device
*dev
= NULL
;
2123 struct sk_buff
*nskb
;
2125 u32 ext_filter_mask
= 0;
2127 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
2131 if (tb
[IFLA_IFNAME
])
2132 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
2134 if (tb
[IFLA_EXT_MASK
])
2135 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
2137 ifm
= nlmsg_data(nlh
);
2138 if (ifm
->ifi_index
> 0)
2139 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2140 else if (tb
[IFLA_IFNAME
])
2141 dev
= __dev_get_by_name(net
, ifname
);
2148 nskb
= nlmsg_new(if_nlmsg_size(dev
, ext_filter_mask
), GFP_KERNEL
);
2152 err
= rtnl_fill_ifinfo(nskb
, dev
, RTM_NEWLINK
, NETLINK_CB(skb
).portid
,
2153 nlh
->nlmsg_seq
, 0, 0, ext_filter_mask
);
2155 /* -EMSGSIZE implies BUG in if_nlmsg_size */
2156 WARN_ON(err
== -EMSGSIZE
);
2159 err
= rtnl_unicast(nskb
, net
, NETLINK_CB(skb
).portid
);
2164 static u16
rtnl_calcit(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2166 struct net
*net
= sock_net(skb
->sk
);
2167 struct net_device
*dev
;
2168 struct nlattr
*tb
[IFLA_MAX
+1];
2169 u32 ext_filter_mask
= 0;
2170 u16 min_ifinfo_dump_size
= 0;
2173 /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */
2174 hdrlen
= nlmsg_len(nlh
) < sizeof(struct ifinfomsg
) ?
2175 sizeof(struct rtgenmsg
) : sizeof(struct ifinfomsg
);
2177 if (nlmsg_parse(nlh
, hdrlen
, tb
, IFLA_MAX
, ifla_policy
) >= 0) {
2178 if (tb
[IFLA_EXT_MASK
])
2179 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
2182 if (!ext_filter_mask
)
2183 return NLMSG_GOODSIZE
;
2185 * traverse the list of net devices and compute the minimum
2186 * buffer size based upon the filter mask.
2188 list_for_each_entry(dev
, &net
->dev_base_head
, dev_list
) {
2189 min_ifinfo_dump_size
= max_t(u16
, min_ifinfo_dump_size
,
2194 return min_ifinfo_dump_size
;
2197 static int rtnl_dump_all(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2200 int s_idx
= cb
->family
;
2204 for (idx
= 1; idx
<= RTNL_FAMILY_MAX
; idx
++) {
2205 int type
= cb
->nlh
->nlmsg_type
-RTM_BASE
;
2206 if (idx
< s_idx
|| idx
== PF_PACKET
)
2208 if (rtnl_msg_handlers
[idx
] == NULL
||
2209 rtnl_msg_handlers
[idx
][type
].dumpit
== NULL
)
2212 memset(&cb
->args
[0], 0, sizeof(cb
->args
));
2216 if (rtnl_msg_handlers
[idx
][type
].dumpit(skb
, cb
))
2224 void rtmsg_ifinfo(int type
, struct net_device
*dev
, unsigned int change
,
2227 struct net
*net
= dev_net(dev
);
2228 struct sk_buff
*skb
;
2230 size_t if_info_size
;
2232 skb
= nlmsg_new((if_info_size
= if_nlmsg_size(dev
, 0)), flags
);
2236 err
= rtnl_fill_ifinfo(skb
, dev
, type
, 0, 0, change
, 0, 0);
2238 /* -EMSGSIZE implies BUG in if_nlmsg_size() */
2239 WARN_ON(err
== -EMSGSIZE
);
2243 rtnl_notify(skb
, net
, 0, RTNLGRP_LINK
, NULL
, flags
);
2247 rtnl_set_sk_err(net
, RTNLGRP_LINK
, err
);
2249 EXPORT_SYMBOL(rtmsg_ifinfo
);
2251 static int nlmsg_populate_fdb_fill(struct sk_buff
*skb
,
2252 struct net_device
*dev
,
2253 u8
*addr
, u32 pid
, u32 seq
,
2254 int type
, unsigned int flags
,
2257 struct nlmsghdr
*nlh
;
2260 nlh
= nlmsg_put(skb
, pid
, seq
, type
, sizeof(*ndm
), nlflags
);
2264 ndm
= nlmsg_data(nlh
);
2265 ndm
->ndm_family
= AF_BRIDGE
;
2268 ndm
->ndm_flags
= flags
;
2270 ndm
->ndm_ifindex
= dev
->ifindex
;
2271 ndm
->ndm_state
= NUD_PERMANENT
;
2273 if (nla_put(skb
, NDA_LLADDR
, ETH_ALEN
, addr
))
2274 goto nla_put_failure
;
2276 return nlmsg_end(skb
, nlh
);
2279 nlmsg_cancel(skb
, nlh
);
2283 static inline size_t rtnl_fdb_nlmsg_size(void)
2285 return NLMSG_ALIGN(sizeof(struct ndmsg
)) + nla_total_size(ETH_ALEN
);
2288 static void rtnl_fdb_notify(struct net_device
*dev
, u8
*addr
, int type
)
2290 struct net
*net
= dev_net(dev
);
2291 struct sk_buff
*skb
;
2294 skb
= nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC
);
2298 err
= nlmsg_populate_fdb_fill(skb
, dev
, addr
, 0, 0, type
, NTF_SELF
, 0);
2304 rtnl_notify(skb
, net
, 0, RTNLGRP_NEIGH
, NULL
, GFP_ATOMIC
);
2307 rtnl_set_sk_err(net
, RTNLGRP_NEIGH
, err
);
2311 * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry
2313 int ndo_dflt_fdb_add(struct ndmsg
*ndm
,
2314 struct nlattr
*tb
[],
2315 struct net_device
*dev
,
2316 const unsigned char *addr
, u16 vid
,
2321 /* If aging addresses are supported device will need to
2322 * implement its own handler for this.
2324 if (ndm
->ndm_state
&& !(ndm
->ndm_state
& NUD_PERMANENT
)) {
2325 pr_info("%s: FDB only supports static addresses\n", dev
->name
);
2329 if (is_unicast_ether_addr(addr
) || is_link_local_ether_addr(addr
))
2330 err
= dev_uc_add_excl(dev
, addr
);
2331 else if (is_multicast_ether_addr(addr
))
2332 err
= dev_mc_add_excl(dev
, addr
);
2334 /* Only return duplicate errors if NLM_F_EXCL is set */
2335 if (err
== -EEXIST
&& !(flags
& NLM_F_EXCL
))
2340 EXPORT_SYMBOL(ndo_dflt_fdb_add
);
2342 static int fdb_vid_parse(struct nlattr
*vlan_attr
, u16
*p_vid
)
2347 if (nla_len(vlan_attr
) != sizeof(u16
)) {
2348 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan\n");
2352 vid
= nla_get_u16(vlan_attr
);
2354 if (!vid
|| vid
>= VLAN_VID_MASK
) {
2355 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan id %d\n",
2364 static int rtnl_fdb_add(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2366 struct net
*net
= sock_net(skb
->sk
);
2368 struct nlattr
*tb
[NDA_MAX
+1];
2369 struct net_device
*dev
;
2374 err
= nlmsg_parse(nlh
, sizeof(*ndm
), tb
, NDA_MAX
, NULL
);
2378 ndm
= nlmsg_data(nlh
);
2379 if (ndm
->ndm_ifindex
== 0) {
2380 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n");
2384 dev
= __dev_get_by_index(net
, ndm
->ndm_ifindex
);
2386 pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n");
2390 if (!tb
[NDA_LLADDR
] || nla_len(tb
[NDA_LLADDR
]) != ETH_ALEN
) {
2391 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n");
2395 addr
= nla_data(tb
[NDA_LLADDR
]);
2397 err
= fdb_vid_parse(tb
[NDA_VLAN
], &vid
);
2403 /* Support fdb on master device the net/bridge default case */
2404 if ((!ndm
->ndm_flags
|| ndm
->ndm_flags
& NTF_MASTER
) &&
2405 (dev
->priv_flags
& IFF_BRIDGE_PORT
)) {
2406 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2407 const struct net_device_ops
*ops
= br_dev
->netdev_ops
;
2409 err
= ops
->ndo_fdb_add(ndm
, tb
, dev
, addr
, vid
,
2414 ndm
->ndm_flags
&= ~NTF_MASTER
;
2417 /* Embedded bridge, macvlan, and any other device support */
2418 if ((ndm
->ndm_flags
& NTF_SELF
)) {
2419 if (dev
->netdev_ops
->ndo_fdb_add
)
2420 err
= dev
->netdev_ops
->ndo_fdb_add(ndm
, tb
, dev
, addr
,
2424 err
= ndo_dflt_fdb_add(ndm
, tb
, dev
, addr
, vid
,
2428 rtnl_fdb_notify(dev
, addr
, RTM_NEWNEIGH
);
2429 ndm
->ndm_flags
&= ~NTF_SELF
;
2437 * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry
2439 int ndo_dflt_fdb_del(struct ndmsg
*ndm
,
2440 struct nlattr
*tb
[],
2441 struct net_device
*dev
,
2442 const unsigned char *addr
, u16 vid
)
2446 /* If aging addresses are supported device will need to
2447 * implement its own handler for this.
2449 if (!(ndm
->ndm_state
& NUD_PERMANENT
)) {
2450 pr_info("%s: FDB only supports static addresses\n", dev
->name
);
2454 if (is_unicast_ether_addr(addr
) || is_link_local_ether_addr(addr
))
2455 err
= dev_uc_del(dev
, addr
);
2456 else if (is_multicast_ether_addr(addr
))
2457 err
= dev_mc_del(dev
, addr
);
2461 EXPORT_SYMBOL(ndo_dflt_fdb_del
);
2463 static int rtnl_fdb_del(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2465 struct net
*net
= sock_net(skb
->sk
);
2467 struct nlattr
*tb
[NDA_MAX
+1];
2468 struct net_device
*dev
;
2473 if (!netlink_capable(skb
, CAP_NET_ADMIN
))
2476 err
= nlmsg_parse(nlh
, sizeof(*ndm
), tb
, NDA_MAX
, NULL
);
2480 ndm
= nlmsg_data(nlh
);
2481 if (ndm
->ndm_ifindex
== 0) {
2482 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n");
2486 dev
= __dev_get_by_index(net
, ndm
->ndm_ifindex
);
2488 pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n");
2492 if (!tb
[NDA_LLADDR
] || nla_len(tb
[NDA_LLADDR
]) != ETH_ALEN
) {
2493 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n");
2497 addr
= nla_data(tb
[NDA_LLADDR
]);
2499 err
= fdb_vid_parse(tb
[NDA_VLAN
], &vid
);
2505 /* Support fdb on master device the net/bridge default case */
2506 if ((!ndm
->ndm_flags
|| ndm
->ndm_flags
& NTF_MASTER
) &&
2507 (dev
->priv_flags
& IFF_BRIDGE_PORT
)) {
2508 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2509 const struct net_device_ops
*ops
= br_dev
->netdev_ops
;
2511 if (ops
->ndo_fdb_del
)
2512 err
= ops
->ndo_fdb_del(ndm
, tb
, dev
, addr
, vid
);
2517 ndm
->ndm_flags
&= ~NTF_MASTER
;
2520 /* Embedded bridge, macvlan, and any other device support */
2521 if (ndm
->ndm_flags
& NTF_SELF
) {
2522 if (dev
->netdev_ops
->ndo_fdb_del
)
2523 err
= dev
->netdev_ops
->ndo_fdb_del(ndm
, tb
, dev
, addr
,
2526 err
= ndo_dflt_fdb_del(ndm
, tb
, dev
, addr
, vid
);
2529 rtnl_fdb_notify(dev
, addr
, RTM_DELNEIGH
);
2530 ndm
->ndm_flags
&= ~NTF_SELF
;
2537 static int nlmsg_populate_fdb(struct sk_buff
*skb
,
2538 struct netlink_callback
*cb
,
2539 struct net_device
*dev
,
2541 struct netdev_hw_addr_list
*list
)
2543 struct netdev_hw_addr
*ha
;
2547 portid
= NETLINK_CB(cb
->skb
).portid
;
2548 seq
= cb
->nlh
->nlmsg_seq
;
2550 list_for_each_entry(ha
, &list
->list
, list
) {
2551 if (*idx
< cb
->args
[0])
2554 err
= nlmsg_populate_fdb_fill(skb
, dev
, ha
->addr
,
2556 RTM_NEWNEIGH
, NTF_SELF
,
2567 * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table.
2568 * @nlh: netlink message header
2571 * Default netdevice operation to dump the existing unicast address list.
2572 * Returns number of addresses from list put in skb.
2574 int ndo_dflt_fdb_dump(struct sk_buff
*skb
,
2575 struct netlink_callback
*cb
,
2576 struct net_device
*dev
,
2577 struct net_device
*filter_dev
,
2582 netif_addr_lock_bh(dev
);
2583 err
= nlmsg_populate_fdb(skb
, cb
, dev
, &idx
, &dev
->uc
);
2586 nlmsg_populate_fdb(skb
, cb
, dev
, &idx
, &dev
->mc
);
2588 netif_addr_unlock_bh(dev
);
2591 EXPORT_SYMBOL(ndo_dflt_fdb_dump
);
2593 static int rtnl_fdb_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2595 struct net_device
*dev
;
2596 struct nlattr
*tb
[IFLA_MAX
+1];
2597 struct net_device
*bdev
= NULL
;
2598 struct net_device
*br_dev
= NULL
;
2599 const struct net_device_ops
*ops
= NULL
;
2600 const struct net_device_ops
*cops
= NULL
;
2601 struct ifinfomsg
*ifm
= nlmsg_data(cb
->nlh
);
2602 struct net
*net
= sock_net(skb
->sk
);
2607 if (nlmsg_parse(cb
->nlh
, sizeof(struct ifinfomsg
), tb
, IFLA_MAX
,
2608 ifla_policy
) == 0) {
2609 if (tb
[IFLA_MASTER
])
2610 br_idx
= nla_get_u32(tb
[IFLA_MASTER
]);
2613 brport_idx
= ifm
->ifi_index
;
2616 br_dev
= __dev_get_by_index(net
, br_idx
);
2620 ops
= br_dev
->netdev_ops
;
2624 for_each_netdev(net
, dev
) {
2625 if (brport_idx
&& (dev
->ifindex
!= brport_idx
))
2628 if (!br_idx
) { /* user did not specify a specific bridge */
2629 if (dev
->priv_flags
& IFF_BRIDGE_PORT
) {
2630 br_dev
= netdev_master_upper_dev_get(dev
);
2631 cops
= br_dev
->netdev_ops
;
2636 if (dev
!= br_dev
&&
2637 !(dev
->priv_flags
& IFF_BRIDGE_PORT
))
2640 if (br_dev
!= netdev_master_upper_dev_get(dev
) &&
2641 !(dev
->priv_flags
& IFF_EBRIDGE
))
2648 if (dev
->priv_flags
& IFF_BRIDGE_PORT
) {
2649 if (cops
&& cops
->ndo_fdb_dump
)
2650 idx
= cops
->ndo_fdb_dump(skb
, cb
, br_dev
, dev
,
2654 idx
= ndo_dflt_fdb_dump(skb
, cb
, dev
, NULL
, idx
);
2655 if (dev
->netdev_ops
->ndo_fdb_dump
)
2656 idx
= dev
->netdev_ops
->ndo_fdb_dump(skb
, cb
, bdev
, dev
,
2666 int ndo_dflt_bridge_getlink(struct sk_buff
*skb
, u32 pid
, u32 seq
,
2667 struct net_device
*dev
, u16 mode
)
2669 struct nlmsghdr
*nlh
;
2670 struct ifinfomsg
*ifm
;
2671 struct nlattr
*br_afspec
;
2672 u8 operstate
= netif_running(dev
) ? dev
->operstate
: IF_OPER_DOWN
;
2673 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2675 nlh
= nlmsg_put(skb
, pid
, seq
, RTM_NEWLINK
, sizeof(*ifm
), NLM_F_MULTI
);
2679 ifm
= nlmsg_data(nlh
);
2680 ifm
->ifi_family
= AF_BRIDGE
;
2682 ifm
->ifi_type
= dev
->type
;
2683 ifm
->ifi_index
= dev
->ifindex
;
2684 ifm
->ifi_flags
= dev_get_flags(dev
);
2685 ifm
->ifi_change
= 0;
2688 if (nla_put_string(skb
, IFLA_IFNAME
, dev
->name
) ||
2689 nla_put_u32(skb
, IFLA_MTU
, dev
->mtu
) ||
2690 nla_put_u8(skb
, IFLA_OPERSTATE
, operstate
) ||
2692 nla_put_u32(skb
, IFLA_MASTER
, br_dev
->ifindex
)) ||
2694 nla_put(skb
, IFLA_ADDRESS
, dev
->addr_len
, dev
->dev_addr
)) ||
2695 (dev
->ifindex
!= dev
->iflink
&&
2696 nla_put_u32(skb
, IFLA_LINK
, dev
->iflink
)))
2697 goto nla_put_failure
;
2699 br_afspec
= nla_nest_start(skb
, IFLA_AF_SPEC
);
2701 goto nla_put_failure
;
2703 if (nla_put_u16(skb
, IFLA_BRIDGE_FLAGS
, BRIDGE_FLAGS_SELF
) ||
2704 nla_put_u16(skb
, IFLA_BRIDGE_MODE
, mode
)) {
2705 nla_nest_cancel(skb
, br_afspec
);
2706 goto nla_put_failure
;
2708 nla_nest_end(skb
, br_afspec
);
2710 return nlmsg_end(skb
, nlh
);
2712 nlmsg_cancel(skb
, nlh
);
2715 EXPORT_SYMBOL(ndo_dflt_bridge_getlink
);
2717 static int rtnl_bridge_getlink(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2719 struct net
*net
= sock_net(skb
->sk
);
2720 struct net_device
*dev
;
2722 u32 portid
= NETLINK_CB(cb
->skb
).portid
;
2723 u32 seq
= cb
->nlh
->nlmsg_seq
;
2724 u32 filter_mask
= 0;
2726 if (nlmsg_len(cb
->nlh
) > sizeof(struct ifinfomsg
)) {
2727 struct nlattr
*extfilt
;
2729 extfilt
= nlmsg_find_attr(cb
->nlh
, sizeof(struct ifinfomsg
),
2732 if (nla_len(extfilt
) < sizeof(filter_mask
))
2735 filter_mask
= nla_get_u32(extfilt
);
2740 for_each_netdev_rcu(net
, dev
) {
2741 const struct net_device_ops
*ops
= dev
->netdev_ops
;
2742 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2744 if (br_dev
&& br_dev
->netdev_ops
->ndo_bridge_getlink
) {
2745 if (idx
>= cb
->args
[0] &&
2746 br_dev
->netdev_ops
->ndo_bridge_getlink(
2747 skb
, portid
, seq
, dev
, filter_mask
) < 0)
2752 if (ops
->ndo_bridge_getlink
) {
2753 if (idx
>= cb
->args
[0] &&
2754 ops
->ndo_bridge_getlink(skb
, portid
, seq
, dev
,
2766 static inline size_t bridge_nlmsg_size(void)
2768 return NLMSG_ALIGN(sizeof(struct ifinfomsg
))
2769 + nla_total_size(IFNAMSIZ
) /* IFLA_IFNAME */
2770 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_ADDRESS */
2771 + nla_total_size(sizeof(u32
)) /* IFLA_MASTER */
2772 + nla_total_size(sizeof(u32
)) /* IFLA_MTU */
2773 + nla_total_size(sizeof(u32
)) /* IFLA_LINK */
2774 + nla_total_size(sizeof(u32
)) /* IFLA_OPERSTATE */
2775 + nla_total_size(sizeof(u8
)) /* IFLA_PROTINFO */
2776 + nla_total_size(sizeof(struct nlattr
)) /* IFLA_AF_SPEC */
2777 + nla_total_size(sizeof(u16
)) /* IFLA_BRIDGE_FLAGS */
2778 + nla_total_size(sizeof(u16
)); /* IFLA_BRIDGE_MODE */
2781 static int rtnl_bridge_notify(struct net_device
*dev
, u16 flags
)
2783 struct net
*net
= dev_net(dev
);
2784 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2785 struct sk_buff
*skb
;
2786 int err
= -EOPNOTSUPP
;
2788 skb
= nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC
);
2794 if ((!flags
|| (flags
& BRIDGE_FLAGS_MASTER
)) &&
2795 br_dev
&& br_dev
->netdev_ops
->ndo_bridge_getlink
) {
2796 err
= br_dev
->netdev_ops
->ndo_bridge_getlink(skb
, 0, 0, dev
, 0);
2801 if ((flags
& BRIDGE_FLAGS_SELF
) &&
2802 dev
->netdev_ops
->ndo_bridge_getlink
) {
2803 err
= dev
->netdev_ops
->ndo_bridge_getlink(skb
, 0, 0, dev
, 0);
2808 rtnl_notify(skb
, net
, 0, RTNLGRP_LINK
, NULL
, GFP_ATOMIC
);
2811 WARN_ON(err
== -EMSGSIZE
);
2813 rtnl_set_sk_err(net
, RTNLGRP_LINK
, err
);
2817 static int rtnl_bridge_setlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2819 struct net
*net
= sock_net(skb
->sk
);
2820 struct ifinfomsg
*ifm
;
2821 struct net_device
*dev
;
2822 struct nlattr
*br_spec
, *attr
= NULL
;
2823 int rem
, err
= -EOPNOTSUPP
;
2824 u16 oflags
, flags
= 0;
2825 bool have_flags
= false;
2827 if (nlmsg_len(nlh
) < sizeof(*ifm
))
2830 ifm
= nlmsg_data(nlh
);
2831 if (ifm
->ifi_family
!= AF_BRIDGE
)
2832 return -EPFNOSUPPORT
;
2834 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2836 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
2840 br_spec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
2842 nla_for_each_nested(attr
, br_spec
, rem
) {
2843 if (nla_type(attr
) == IFLA_BRIDGE_FLAGS
) {
2844 if (nla_len(attr
) < sizeof(flags
))
2848 flags
= nla_get_u16(attr
);
2856 if (!flags
|| (flags
& BRIDGE_FLAGS_MASTER
)) {
2857 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2859 if (!br_dev
|| !br_dev
->netdev_ops
->ndo_bridge_setlink
) {
2864 err
= br_dev
->netdev_ops
->ndo_bridge_setlink(dev
, nlh
);
2868 flags
&= ~BRIDGE_FLAGS_MASTER
;
2871 if ((flags
& BRIDGE_FLAGS_SELF
)) {
2872 if (!dev
->netdev_ops
->ndo_bridge_setlink
)
2875 err
= dev
->netdev_ops
->ndo_bridge_setlink(dev
, nlh
);
2878 flags
&= ~BRIDGE_FLAGS_SELF
;
2882 memcpy(nla_data(attr
), &flags
, sizeof(flags
));
2883 /* Generate event to notify upper layer of bridge change */
2885 err
= rtnl_bridge_notify(dev
, oflags
);
2890 static int rtnl_bridge_dellink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2892 struct net
*net
= sock_net(skb
->sk
);
2893 struct ifinfomsg
*ifm
;
2894 struct net_device
*dev
;
2895 struct nlattr
*br_spec
, *attr
= NULL
;
2896 int rem
, err
= -EOPNOTSUPP
;
2897 u16 oflags
, flags
= 0;
2898 bool have_flags
= false;
2900 if (nlmsg_len(nlh
) < sizeof(*ifm
))
2903 ifm
= nlmsg_data(nlh
);
2904 if (ifm
->ifi_family
!= AF_BRIDGE
)
2905 return -EPFNOSUPPORT
;
2907 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2909 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
2913 br_spec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
2915 nla_for_each_nested(attr
, br_spec
, rem
) {
2916 if (nla_type(attr
) == IFLA_BRIDGE_FLAGS
) {
2917 if (nla_len(attr
) < sizeof(flags
))
2921 flags
= nla_get_u16(attr
);
2929 if (!flags
|| (flags
& BRIDGE_FLAGS_MASTER
)) {
2930 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2932 if (!br_dev
|| !br_dev
->netdev_ops
->ndo_bridge_dellink
) {
2937 err
= br_dev
->netdev_ops
->ndo_bridge_dellink(dev
, nlh
);
2941 flags
&= ~BRIDGE_FLAGS_MASTER
;
2944 if ((flags
& BRIDGE_FLAGS_SELF
)) {
2945 if (!dev
->netdev_ops
->ndo_bridge_dellink
)
2948 err
= dev
->netdev_ops
->ndo_bridge_dellink(dev
, nlh
);
2951 flags
&= ~BRIDGE_FLAGS_SELF
;
2955 memcpy(nla_data(attr
), &flags
, sizeof(flags
));
2956 /* Generate event to notify upper layer of bridge change */
2958 err
= rtnl_bridge_notify(dev
, oflags
);
2963 /* Process one rtnetlink message. */
2965 static int rtnetlink_rcv_msg(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2967 struct net
*net
= sock_net(skb
->sk
);
2968 rtnl_doit_func doit
;
2974 type
= nlh
->nlmsg_type
;
2980 /* All the messages must have at least 1 byte length */
2981 if (nlmsg_len(nlh
) < sizeof(struct rtgenmsg
))
2984 family
= ((struct rtgenmsg
*)nlmsg_data(nlh
))->rtgen_family
;
2988 if (kind
!= 2 && !netlink_net_capable(skb
, CAP_NET_ADMIN
))
2991 if (kind
== 2 && nlh
->nlmsg_flags
&NLM_F_DUMP
) {
2993 rtnl_dumpit_func dumpit
;
2994 rtnl_calcit_func calcit
;
2995 u16 min_dump_alloc
= 0;
2997 dumpit
= rtnl_get_dumpit(family
, type
);
3000 calcit
= rtnl_get_calcit(family
, type
);
3002 min_dump_alloc
= calcit(skb
, nlh
);
3007 struct netlink_dump_control c
= {
3009 .min_dump_alloc
= min_dump_alloc
,
3011 err
= netlink_dump_start(rtnl
, skb
, nlh
, &c
);
3017 doit
= rtnl_get_doit(family
, type
);
3021 return doit(skb
, nlh
);
3024 static void rtnetlink_rcv(struct sk_buff
*skb
)
3027 netlink_rcv_skb(skb
, &rtnetlink_rcv_msg
);
3031 static int rtnetlink_event(struct notifier_block
*this, unsigned long event
, void *ptr
)
3033 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
3039 case NETDEV_POST_INIT
:
3040 case NETDEV_REGISTER
:
3042 case NETDEV_PRE_TYPE_CHANGE
:
3043 case NETDEV_GOING_DOWN
:
3044 case NETDEV_UNREGISTER
:
3045 case NETDEV_UNREGISTER_FINAL
:
3046 case NETDEV_RELEASE
:
3050 rtmsg_ifinfo(RTM_NEWLINK
, dev
, 0, GFP_KERNEL
);
3056 static struct notifier_block rtnetlink_dev_notifier
= {
3057 .notifier_call
= rtnetlink_event
,
3061 static int __net_init
rtnetlink_net_init(struct net
*net
)
3064 struct netlink_kernel_cfg cfg
= {
3065 .groups
= RTNLGRP_MAX
,
3066 .input
= rtnetlink_rcv
,
3067 .cb_mutex
= &rtnl_mutex
,
3068 .flags
= NL_CFG_F_NONROOT_RECV
,
3071 sk
= netlink_kernel_create(net
, NETLINK_ROUTE
, &cfg
);
3078 static void __net_exit
rtnetlink_net_exit(struct net
*net
)
3080 netlink_kernel_release(net
->rtnl
);
3084 static struct pernet_operations rtnetlink_net_ops
= {
3085 .init
= rtnetlink_net_init
,
3086 .exit
= rtnetlink_net_exit
,
3089 void __init
rtnetlink_init(void)
3091 if (register_pernet_subsys(&rtnetlink_net_ops
))
3092 panic("rtnetlink_init: cannot initialize rtnetlink\n");
3094 register_netdevice_notifier(&rtnetlink_dev_notifier
);
3096 rtnl_register(PF_UNSPEC
, RTM_GETLINK
, rtnl_getlink
,
3097 rtnl_dump_ifinfo
, rtnl_calcit
);
3098 rtnl_register(PF_UNSPEC
, RTM_SETLINK
, rtnl_setlink
, NULL
, NULL
);
3099 rtnl_register(PF_UNSPEC
, RTM_NEWLINK
, rtnl_newlink
, NULL
, NULL
);
3100 rtnl_register(PF_UNSPEC
, RTM_DELLINK
, rtnl_dellink
, NULL
, NULL
);
3102 rtnl_register(PF_UNSPEC
, RTM_GETADDR
, NULL
, rtnl_dump_all
, NULL
);
3103 rtnl_register(PF_UNSPEC
, RTM_GETROUTE
, NULL
, rtnl_dump_all
, NULL
);
3105 rtnl_register(PF_BRIDGE
, RTM_NEWNEIGH
, rtnl_fdb_add
, NULL
, NULL
);
3106 rtnl_register(PF_BRIDGE
, RTM_DELNEIGH
, rtnl_fdb_del
, NULL
, NULL
);
3107 rtnl_register(PF_BRIDGE
, RTM_GETNEIGH
, NULL
, rtnl_fdb_dump
, NULL
);
3109 rtnl_register(PF_BRIDGE
, RTM_GETLINK
, NULL
, rtnl_bridge_getlink
, NULL
);
3110 rtnl_register(PF_BRIDGE
, RTM_DELLINK
, rtnl_bridge_dellink
, NULL
, NULL
);
3111 rtnl_register(PF_BRIDGE
, RTM_SETLINK
, rtnl_bridge_setlink
, NULL
, NULL
);