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/pci.h>
40 #include <linux/etherdevice.h>
42 #include <asm/uaccess.h>
44 #include <linux/inet.h>
45 #include <linux/netdevice.h>
47 #include <net/protocol.h>
49 #include <net/route.h>
52 #include <net/pkt_sched.h>
53 #include <net/fib_rules.h>
54 #include <net/rtnetlink.h>
55 #include <net/net_namespace.h>
59 rtnl_dumpit_func dumpit
;
60 rtnl_calcit_func calcit
;
63 static DEFINE_MUTEX(rtnl_mutex
);
67 mutex_lock(&rtnl_mutex
);
69 EXPORT_SYMBOL(rtnl_lock
);
71 void __rtnl_unlock(void)
73 mutex_unlock(&rtnl_mutex
);
76 void rtnl_unlock(void)
78 /* This fellow will unlock it for us. */
81 EXPORT_SYMBOL(rtnl_unlock
);
83 int rtnl_trylock(void)
85 return mutex_trylock(&rtnl_mutex
);
87 EXPORT_SYMBOL(rtnl_trylock
);
89 int rtnl_is_locked(void)
91 return mutex_is_locked(&rtnl_mutex
);
93 EXPORT_SYMBOL(rtnl_is_locked
);
95 #ifdef CONFIG_PROVE_LOCKING
96 int lockdep_rtnl_is_held(void)
98 return lockdep_is_held(&rtnl_mutex
);
100 EXPORT_SYMBOL(lockdep_rtnl_is_held
);
101 #endif /* #ifdef CONFIG_PROVE_LOCKING */
103 static struct rtnl_link
*rtnl_msg_handlers
[RTNL_FAMILY_MAX
+ 1];
105 static inline int rtm_msgindex(int msgtype
)
107 int msgindex
= msgtype
- RTM_BASE
;
110 * msgindex < 0 implies someone tried to register a netlink
111 * control code. msgindex >= RTM_NR_MSGTYPES may indicate that
112 * the message type has not been added to linux/rtnetlink.h
114 BUG_ON(msgindex
< 0 || msgindex
>= RTM_NR_MSGTYPES
);
119 static rtnl_doit_func
rtnl_get_doit(int protocol
, int msgindex
)
121 struct rtnl_link
*tab
;
123 if (protocol
<= RTNL_FAMILY_MAX
)
124 tab
= rtnl_msg_handlers
[protocol
];
128 if (tab
== NULL
|| tab
[msgindex
].doit
== NULL
)
129 tab
= rtnl_msg_handlers
[PF_UNSPEC
];
131 return tab
[msgindex
].doit
;
134 static rtnl_dumpit_func
rtnl_get_dumpit(int protocol
, int msgindex
)
136 struct rtnl_link
*tab
;
138 if (protocol
<= RTNL_FAMILY_MAX
)
139 tab
= rtnl_msg_handlers
[protocol
];
143 if (tab
== NULL
|| tab
[msgindex
].dumpit
== NULL
)
144 tab
= rtnl_msg_handlers
[PF_UNSPEC
];
146 return tab
[msgindex
].dumpit
;
149 static rtnl_calcit_func
rtnl_get_calcit(int protocol
, int msgindex
)
151 struct rtnl_link
*tab
;
153 if (protocol
<= RTNL_FAMILY_MAX
)
154 tab
= rtnl_msg_handlers
[protocol
];
158 if (tab
== NULL
|| tab
[msgindex
].calcit
== NULL
)
159 tab
= rtnl_msg_handlers
[PF_UNSPEC
];
161 return tab
[msgindex
].calcit
;
165 * __rtnl_register - Register a rtnetlink message type
166 * @protocol: Protocol family or PF_UNSPEC
167 * @msgtype: rtnetlink message type
168 * @doit: Function pointer called for each request message
169 * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message
170 * @calcit: Function pointer to calc size of dump message
172 * Registers the specified function pointers (at least one of them has
173 * to be non-NULL) to be called whenever a request message for the
174 * specified protocol family and message type is received.
176 * The special protocol family PF_UNSPEC may be used to define fallback
177 * function pointers for the case when no entry for the specific protocol
180 * Returns 0 on success or a negative error code.
182 int __rtnl_register(int protocol
, int msgtype
,
183 rtnl_doit_func doit
, rtnl_dumpit_func dumpit
,
184 rtnl_calcit_func calcit
)
186 struct rtnl_link
*tab
;
189 BUG_ON(protocol
< 0 || protocol
> RTNL_FAMILY_MAX
);
190 msgindex
= rtm_msgindex(msgtype
);
192 tab
= rtnl_msg_handlers
[protocol
];
194 tab
= kcalloc(RTM_NR_MSGTYPES
, sizeof(*tab
), GFP_KERNEL
);
198 rtnl_msg_handlers
[protocol
] = tab
;
202 tab
[msgindex
].doit
= doit
;
205 tab
[msgindex
].dumpit
= dumpit
;
208 tab
[msgindex
].calcit
= calcit
;
212 EXPORT_SYMBOL_GPL(__rtnl_register
);
215 * rtnl_register - Register a rtnetlink message type
217 * Identical to __rtnl_register() but panics on failure. This is useful
218 * as failure of this function is very unlikely, it can only happen due
219 * to lack of memory when allocating the chain to store all message
220 * handlers for a protocol. Meant for use in init functions where lack
221 * of memory implies no sense in continuing.
223 void rtnl_register(int protocol
, int msgtype
,
224 rtnl_doit_func doit
, rtnl_dumpit_func dumpit
,
225 rtnl_calcit_func calcit
)
227 if (__rtnl_register(protocol
, msgtype
, doit
, dumpit
, calcit
) < 0)
228 panic("Unable to register rtnetlink message handler, "
229 "protocol = %d, message type = %d\n",
232 EXPORT_SYMBOL_GPL(rtnl_register
);
235 * rtnl_unregister - Unregister a rtnetlink message type
236 * @protocol: Protocol family or PF_UNSPEC
237 * @msgtype: rtnetlink message type
239 * Returns 0 on success or a negative error code.
241 int rtnl_unregister(int protocol
, int msgtype
)
245 BUG_ON(protocol
< 0 || protocol
> RTNL_FAMILY_MAX
);
246 msgindex
= rtm_msgindex(msgtype
);
248 if (rtnl_msg_handlers
[protocol
] == NULL
)
251 rtnl_msg_handlers
[protocol
][msgindex
].doit
= NULL
;
252 rtnl_msg_handlers
[protocol
][msgindex
].dumpit
= NULL
;
256 EXPORT_SYMBOL_GPL(rtnl_unregister
);
259 * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol
260 * @protocol : Protocol family or PF_UNSPEC
262 * Identical to calling rtnl_unregster() for all registered message types
263 * of a certain protocol family.
265 void rtnl_unregister_all(int protocol
)
267 BUG_ON(protocol
< 0 || protocol
> RTNL_FAMILY_MAX
);
269 kfree(rtnl_msg_handlers
[protocol
]);
270 rtnl_msg_handlers
[protocol
] = NULL
;
272 EXPORT_SYMBOL_GPL(rtnl_unregister_all
);
274 static LIST_HEAD(link_ops
);
276 static const struct rtnl_link_ops
*rtnl_link_ops_get(const char *kind
)
278 const struct rtnl_link_ops
*ops
;
280 list_for_each_entry(ops
, &link_ops
, list
) {
281 if (!strcmp(ops
->kind
, kind
))
288 * __rtnl_link_register - Register rtnl_link_ops with rtnetlink.
289 * @ops: struct rtnl_link_ops * to register
291 * The caller must hold the rtnl_mutex. This function should be used
292 * by drivers that create devices during module initialization. It
293 * must be called before registering the devices.
295 * Returns 0 on success or a negative error code.
297 int __rtnl_link_register(struct rtnl_link_ops
*ops
)
299 if (rtnl_link_ops_get(ops
->kind
))
302 /* The check for setup is here because if ops
303 * does not have that filled up, it is not possible
304 * to use the ops for creating device. So do not
305 * fill up dellink as well. That disables rtnl_dellink.
307 if (ops
->setup
&& !ops
->dellink
)
308 ops
->dellink
= unregister_netdevice_queue
;
310 list_add_tail(&ops
->list
, &link_ops
);
313 EXPORT_SYMBOL_GPL(__rtnl_link_register
);
316 * rtnl_link_register - Register rtnl_link_ops with rtnetlink.
317 * @ops: struct rtnl_link_ops * to register
319 * Returns 0 on success or a negative error code.
321 int rtnl_link_register(struct rtnl_link_ops
*ops
)
326 err
= __rtnl_link_register(ops
);
330 EXPORT_SYMBOL_GPL(rtnl_link_register
);
332 static void __rtnl_kill_links(struct net
*net
, struct rtnl_link_ops
*ops
)
334 struct net_device
*dev
;
335 LIST_HEAD(list_kill
);
337 for_each_netdev(net
, dev
) {
338 if (dev
->rtnl_link_ops
== ops
)
339 ops
->dellink(dev
, &list_kill
);
341 unregister_netdevice_many(&list_kill
);
345 * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
346 * @ops: struct rtnl_link_ops * to unregister
348 * The caller must hold the rtnl_mutex.
350 void __rtnl_link_unregister(struct rtnl_link_ops
*ops
)
355 __rtnl_kill_links(net
, ops
);
357 list_del(&ops
->list
);
359 EXPORT_SYMBOL_GPL(__rtnl_link_unregister
);
361 /* Return with the rtnl_lock held when there are no network
362 * devices unregistering in any network namespace.
364 static void rtnl_lock_unregistering_all(void)
371 prepare_to_wait(&netdev_unregistering_wq
, &wait
,
372 TASK_UNINTERRUPTIBLE
);
373 unregistering
= false;
376 if (net
->dev_unreg_count
> 0) {
377 unregistering
= true;
386 finish_wait(&netdev_unregistering_wq
, &wait
);
390 * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
391 * @ops: struct rtnl_link_ops * to unregister
393 void rtnl_link_unregister(struct rtnl_link_ops
*ops
)
395 /* Close the race with cleanup_net() */
396 mutex_lock(&net_mutex
);
397 rtnl_lock_unregistering_all();
398 __rtnl_link_unregister(ops
);
400 mutex_unlock(&net_mutex
);
402 EXPORT_SYMBOL_GPL(rtnl_link_unregister
);
404 static size_t rtnl_link_get_slave_info_data_size(const struct net_device
*dev
)
406 struct net_device
*master_dev
;
407 const struct rtnl_link_ops
*ops
;
409 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
412 ops
= master_dev
->rtnl_link_ops
;
413 if (!ops
|| !ops
->get_slave_size
)
415 /* IFLA_INFO_SLAVE_DATA + nested data */
416 return nla_total_size(sizeof(struct nlattr
)) +
417 ops
->get_slave_size(master_dev
, dev
);
420 static size_t rtnl_link_get_size(const struct net_device
*dev
)
422 const struct rtnl_link_ops
*ops
= dev
->rtnl_link_ops
;
428 size
= nla_total_size(sizeof(struct nlattr
)) + /* IFLA_LINKINFO */
429 nla_total_size(strlen(ops
->kind
) + 1); /* IFLA_INFO_KIND */
432 /* IFLA_INFO_DATA + nested data */
433 size
+= nla_total_size(sizeof(struct nlattr
)) +
436 if (ops
->get_xstats_size
)
437 /* IFLA_INFO_XSTATS */
438 size
+= nla_total_size(ops
->get_xstats_size(dev
));
440 size
+= rtnl_link_get_slave_info_data_size(dev
);
445 static LIST_HEAD(rtnl_af_ops
);
447 static const struct rtnl_af_ops
*rtnl_af_lookup(const int family
)
449 const struct rtnl_af_ops
*ops
;
451 list_for_each_entry(ops
, &rtnl_af_ops
, list
) {
452 if (ops
->family
== family
)
460 * rtnl_af_register - Register rtnl_af_ops with rtnetlink.
461 * @ops: struct rtnl_af_ops * to register
463 * Returns 0 on success or a negative error code.
465 void rtnl_af_register(struct rtnl_af_ops
*ops
)
468 list_add_tail(&ops
->list
, &rtnl_af_ops
);
471 EXPORT_SYMBOL_GPL(rtnl_af_register
);
474 * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
475 * @ops: struct rtnl_af_ops * to unregister
477 * The caller must hold the rtnl_mutex.
479 void __rtnl_af_unregister(struct rtnl_af_ops
*ops
)
481 list_del(&ops
->list
);
483 EXPORT_SYMBOL_GPL(__rtnl_af_unregister
);
486 * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
487 * @ops: struct rtnl_af_ops * to unregister
489 void rtnl_af_unregister(struct rtnl_af_ops
*ops
)
492 __rtnl_af_unregister(ops
);
495 EXPORT_SYMBOL_GPL(rtnl_af_unregister
);
497 static size_t rtnl_link_get_af_size(const struct net_device
*dev
)
499 struct rtnl_af_ops
*af_ops
;
503 size
= nla_total_size(sizeof(struct nlattr
));
505 list_for_each_entry(af_ops
, &rtnl_af_ops
, list
) {
506 if (af_ops
->get_link_af_size
) {
507 /* AF_* + nested data */
508 size
+= nla_total_size(sizeof(struct nlattr
)) +
509 af_ops
->get_link_af_size(dev
);
516 static bool rtnl_have_link_slave_info(const struct net_device
*dev
)
518 struct net_device
*master_dev
;
520 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
521 if (master_dev
&& master_dev
->rtnl_link_ops
)
526 static int rtnl_link_slave_info_fill(struct sk_buff
*skb
,
527 const struct net_device
*dev
)
529 struct net_device
*master_dev
;
530 const struct rtnl_link_ops
*ops
;
531 struct nlattr
*slave_data
;
534 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
537 ops
= master_dev
->rtnl_link_ops
;
540 if (nla_put_string(skb
, IFLA_INFO_SLAVE_KIND
, ops
->kind
) < 0)
542 if (ops
->fill_slave_info
) {
543 slave_data
= nla_nest_start(skb
, IFLA_INFO_SLAVE_DATA
);
546 err
= ops
->fill_slave_info(skb
, master_dev
, dev
);
548 goto err_cancel_slave_data
;
549 nla_nest_end(skb
, slave_data
);
553 err_cancel_slave_data
:
554 nla_nest_cancel(skb
, slave_data
);
558 static int rtnl_link_info_fill(struct sk_buff
*skb
,
559 const struct net_device
*dev
)
561 const struct rtnl_link_ops
*ops
= dev
->rtnl_link_ops
;
567 if (nla_put_string(skb
, IFLA_INFO_KIND
, ops
->kind
) < 0)
569 if (ops
->fill_xstats
) {
570 err
= ops
->fill_xstats(skb
, dev
);
574 if (ops
->fill_info
) {
575 data
= nla_nest_start(skb
, IFLA_INFO_DATA
);
578 err
= ops
->fill_info(skb
, dev
);
580 goto err_cancel_data
;
581 nla_nest_end(skb
, data
);
586 nla_nest_cancel(skb
, data
);
590 static int rtnl_link_fill(struct sk_buff
*skb
, const struct net_device
*dev
)
592 struct nlattr
*linkinfo
;
595 linkinfo
= nla_nest_start(skb
, IFLA_LINKINFO
);
596 if (linkinfo
== NULL
)
599 err
= rtnl_link_info_fill(skb
, dev
);
601 goto err_cancel_link
;
603 err
= rtnl_link_slave_info_fill(skb
, dev
);
605 goto err_cancel_link
;
607 nla_nest_end(skb
, linkinfo
);
611 nla_nest_cancel(skb
, linkinfo
);
616 int rtnetlink_send(struct sk_buff
*skb
, struct net
*net
, u32 pid
, unsigned int group
, int echo
)
618 struct sock
*rtnl
= net
->rtnl
;
621 NETLINK_CB(skb
).dst_group
= group
;
623 atomic_inc(&skb
->users
);
624 netlink_broadcast(rtnl
, skb
, pid
, group
, GFP_KERNEL
);
626 err
= netlink_unicast(rtnl
, skb
, pid
, MSG_DONTWAIT
);
630 int rtnl_unicast(struct sk_buff
*skb
, struct net
*net
, u32 pid
)
632 struct sock
*rtnl
= net
->rtnl
;
634 return nlmsg_unicast(rtnl
, skb
, pid
);
636 EXPORT_SYMBOL(rtnl_unicast
);
638 void rtnl_notify(struct sk_buff
*skb
, struct net
*net
, u32 pid
, u32 group
,
639 struct nlmsghdr
*nlh
, gfp_t flags
)
641 struct sock
*rtnl
= net
->rtnl
;
645 report
= nlmsg_report(nlh
);
647 nlmsg_notify(rtnl
, skb
, pid
, group
, report
, flags
);
649 EXPORT_SYMBOL(rtnl_notify
);
651 void rtnl_set_sk_err(struct net
*net
, u32 group
, int error
)
653 struct sock
*rtnl
= net
->rtnl
;
655 netlink_set_err(rtnl
, 0, group
, error
);
657 EXPORT_SYMBOL(rtnl_set_sk_err
);
659 int rtnetlink_put_metrics(struct sk_buff
*skb
, u32
*metrics
)
664 mx
= nla_nest_start(skb
, RTA_METRICS
);
668 for (i
= 0; i
< RTAX_MAX
; i
++) {
671 if (nla_put_u32(skb
, i
+1, metrics
[i
]))
672 goto nla_put_failure
;
677 nla_nest_cancel(skb
, mx
);
681 return nla_nest_end(skb
, mx
);
684 nla_nest_cancel(skb
, mx
);
687 EXPORT_SYMBOL(rtnetlink_put_metrics
);
689 int rtnl_put_cacheinfo(struct sk_buff
*skb
, struct dst_entry
*dst
, u32 id
,
690 long expires
, u32 error
)
692 struct rta_cacheinfo ci
= {
693 .rta_lastuse
= jiffies_delta_to_clock_t(jiffies
- dst
->lastuse
),
694 .rta_used
= dst
->__use
,
695 .rta_clntref
= atomic_read(&(dst
->__refcnt
)),
703 clock
= jiffies_to_clock_t(abs(expires
));
704 clock
= min_t(unsigned long, clock
, INT_MAX
);
705 ci
.rta_expires
= (expires
> 0) ? clock
: -clock
;
707 return nla_put(skb
, RTA_CACHEINFO
, sizeof(ci
), &ci
);
709 EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo
);
711 static void set_operstate(struct net_device
*dev
, unsigned char transition
)
713 unsigned char operstate
= dev
->operstate
;
715 switch (transition
) {
717 if ((operstate
== IF_OPER_DORMANT
||
718 operstate
== IF_OPER_UNKNOWN
) &&
720 operstate
= IF_OPER_UP
;
723 case IF_OPER_DORMANT
:
724 if (operstate
== IF_OPER_UP
||
725 operstate
== IF_OPER_UNKNOWN
)
726 operstate
= IF_OPER_DORMANT
;
730 if (dev
->operstate
!= operstate
) {
731 write_lock_bh(&dev_base_lock
);
732 dev
->operstate
= operstate
;
733 write_unlock_bh(&dev_base_lock
);
734 netdev_state_change(dev
);
738 static unsigned int rtnl_dev_get_flags(const struct net_device
*dev
)
740 return (dev
->flags
& ~(IFF_PROMISC
| IFF_ALLMULTI
)) |
741 (dev
->gflags
& (IFF_PROMISC
| IFF_ALLMULTI
));
744 static unsigned int rtnl_dev_combine_flags(const struct net_device
*dev
,
745 const struct ifinfomsg
*ifm
)
747 unsigned int flags
= ifm
->ifi_flags
;
749 /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
751 flags
= (flags
& ifm
->ifi_change
) |
752 (rtnl_dev_get_flags(dev
) & ~ifm
->ifi_change
);
757 static void copy_rtnl_link_stats(struct rtnl_link_stats
*a
,
758 const struct rtnl_link_stats64
*b
)
760 a
->rx_packets
= b
->rx_packets
;
761 a
->tx_packets
= b
->tx_packets
;
762 a
->rx_bytes
= b
->rx_bytes
;
763 a
->tx_bytes
= b
->tx_bytes
;
764 a
->rx_errors
= b
->rx_errors
;
765 a
->tx_errors
= b
->tx_errors
;
766 a
->rx_dropped
= b
->rx_dropped
;
767 a
->tx_dropped
= b
->tx_dropped
;
769 a
->multicast
= b
->multicast
;
770 a
->collisions
= b
->collisions
;
772 a
->rx_length_errors
= b
->rx_length_errors
;
773 a
->rx_over_errors
= b
->rx_over_errors
;
774 a
->rx_crc_errors
= b
->rx_crc_errors
;
775 a
->rx_frame_errors
= b
->rx_frame_errors
;
776 a
->rx_fifo_errors
= b
->rx_fifo_errors
;
777 a
->rx_missed_errors
= b
->rx_missed_errors
;
779 a
->tx_aborted_errors
= b
->tx_aborted_errors
;
780 a
->tx_carrier_errors
= b
->tx_carrier_errors
;
781 a
->tx_fifo_errors
= b
->tx_fifo_errors
;
782 a
->tx_heartbeat_errors
= b
->tx_heartbeat_errors
;
783 a
->tx_window_errors
= b
->tx_window_errors
;
785 a
->rx_compressed
= b
->rx_compressed
;
786 a
->tx_compressed
= b
->tx_compressed
;
789 static void copy_rtnl_link_stats64(void *v
, const struct rtnl_link_stats64
*b
)
791 memcpy(v
, b
, sizeof(*b
));
795 static inline int rtnl_vfinfo_size(const struct net_device
*dev
,
798 if (dev
->dev
.parent
&& dev_is_pci(dev
->dev
.parent
) &&
799 (ext_filter_mask
& RTEXT_FILTER_VF
)) {
800 int num_vfs
= dev_num_vf(dev
->dev
.parent
);
801 size_t size
= nla_total_size(sizeof(struct nlattr
));
802 size
+= nla_total_size(num_vfs
* sizeof(struct nlattr
));
804 (nla_total_size(sizeof(struct ifla_vf_mac
)) +
805 nla_total_size(sizeof(struct ifla_vf_vlan
)) +
806 nla_total_size(sizeof(struct ifla_vf_spoofchk
)) +
807 nla_total_size(sizeof(struct ifla_vf_rate
)) +
808 nla_total_size(sizeof(struct ifla_vf_link_state
)));
814 static size_t rtnl_port_size(const struct net_device
*dev
,
817 size_t port_size
= nla_total_size(4) /* PORT_VF */
818 + nla_total_size(PORT_PROFILE_MAX
) /* PORT_PROFILE */
819 + nla_total_size(sizeof(struct ifla_port_vsi
))
821 + nla_total_size(PORT_UUID_MAX
) /* PORT_INSTANCE_UUID */
822 + nla_total_size(PORT_UUID_MAX
) /* PORT_HOST_UUID */
823 + nla_total_size(1) /* PROT_VDP_REQUEST */
824 + nla_total_size(2); /* PORT_VDP_RESPONSE */
825 size_t vf_ports_size
= nla_total_size(sizeof(struct nlattr
));
826 size_t vf_port_size
= nla_total_size(sizeof(struct nlattr
))
828 size_t port_self_size
= nla_total_size(sizeof(struct nlattr
))
831 if (!dev
->netdev_ops
->ndo_get_vf_port
|| !dev
->dev
.parent
||
832 !(ext_filter_mask
& RTEXT_FILTER_VF
))
834 if (dev_num_vf(dev
->dev
.parent
))
835 return port_self_size
+ vf_ports_size
+
836 vf_port_size
* dev_num_vf(dev
->dev
.parent
);
838 return port_self_size
;
841 static noinline
size_t if_nlmsg_size(const struct net_device
*dev
,
844 return NLMSG_ALIGN(sizeof(struct ifinfomsg
))
845 + nla_total_size(IFNAMSIZ
) /* IFLA_IFNAME */
846 + nla_total_size(IFALIASZ
) /* IFLA_IFALIAS */
847 + nla_total_size(IFNAMSIZ
) /* IFLA_QDISC */
848 + nla_total_size(sizeof(struct rtnl_link_ifmap
))
849 + nla_total_size(sizeof(struct rtnl_link_stats
))
850 + nla_total_size(sizeof(struct rtnl_link_stats64
))
851 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_ADDRESS */
852 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_BROADCAST */
853 + nla_total_size(4) /* IFLA_TXQLEN */
854 + nla_total_size(4) /* IFLA_WEIGHT */
855 + nla_total_size(4) /* IFLA_MTU */
856 + nla_total_size(4) /* IFLA_LINK */
857 + nla_total_size(4) /* IFLA_MASTER */
858 + nla_total_size(1) /* IFLA_CARRIER */
859 + nla_total_size(4) /* IFLA_PROMISCUITY */
860 + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */
861 + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */
862 + nla_total_size(1) /* IFLA_OPERSTATE */
863 + nla_total_size(1) /* IFLA_LINKMODE */
864 + nla_total_size(4) /* IFLA_CARRIER_CHANGES */
865 + nla_total_size(ext_filter_mask
866 & RTEXT_FILTER_VF
? 4 : 0) /* IFLA_NUM_VF */
867 + rtnl_vfinfo_size(dev
, ext_filter_mask
) /* IFLA_VFINFO_LIST */
868 + rtnl_port_size(dev
, ext_filter_mask
) /* IFLA_VF_PORTS + IFLA_PORT_SELF */
869 + rtnl_link_get_size(dev
) /* IFLA_LINKINFO */
870 + rtnl_link_get_af_size(dev
) /* IFLA_AF_SPEC */
871 + nla_total_size(MAX_PHYS_PORT_ID_LEN
); /* IFLA_PHYS_PORT_ID */
874 static int rtnl_vf_ports_fill(struct sk_buff
*skb
, struct net_device
*dev
)
876 struct nlattr
*vf_ports
;
877 struct nlattr
*vf_port
;
881 vf_ports
= nla_nest_start(skb
, IFLA_VF_PORTS
);
885 for (vf
= 0; vf
< dev_num_vf(dev
->dev
.parent
); vf
++) {
886 vf_port
= nla_nest_start(skb
, IFLA_VF_PORT
);
888 goto nla_put_failure
;
889 if (nla_put_u32(skb
, IFLA_PORT_VF
, vf
))
890 goto nla_put_failure
;
891 err
= dev
->netdev_ops
->ndo_get_vf_port(dev
, vf
, skb
);
892 if (err
== -EMSGSIZE
)
893 goto nla_put_failure
;
895 nla_nest_cancel(skb
, vf_port
);
898 nla_nest_end(skb
, vf_port
);
901 nla_nest_end(skb
, vf_ports
);
906 nla_nest_cancel(skb
, vf_ports
);
910 static int rtnl_port_self_fill(struct sk_buff
*skb
, struct net_device
*dev
)
912 struct nlattr
*port_self
;
915 port_self
= nla_nest_start(skb
, IFLA_PORT_SELF
);
919 err
= dev
->netdev_ops
->ndo_get_vf_port(dev
, PORT_SELF_VF
, skb
);
921 nla_nest_cancel(skb
, port_self
);
922 return (err
== -EMSGSIZE
) ? err
: 0;
925 nla_nest_end(skb
, port_self
);
930 static int rtnl_port_fill(struct sk_buff
*skb
, struct net_device
*dev
,
935 if (!dev
->netdev_ops
->ndo_get_vf_port
|| !dev
->dev
.parent
||
936 !(ext_filter_mask
& RTEXT_FILTER_VF
))
939 err
= rtnl_port_self_fill(skb
, dev
);
943 if (dev_num_vf(dev
->dev
.parent
)) {
944 err
= rtnl_vf_ports_fill(skb
, dev
);
952 static int rtnl_phys_port_id_fill(struct sk_buff
*skb
, struct net_device
*dev
)
955 struct netdev_phys_port_id ppid
;
957 err
= dev_get_phys_port_id(dev
, &ppid
);
959 if (err
== -EOPNOTSUPP
)
964 if (nla_put(skb
, IFLA_PHYS_PORT_ID
, ppid
.id_len
, ppid
.id
))
970 static int rtnl_fill_ifinfo(struct sk_buff
*skb
, struct net_device
*dev
,
971 int type
, u32 pid
, u32 seq
, u32 change
,
972 unsigned int flags
, u32 ext_filter_mask
)
974 struct ifinfomsg
*ifm
;
975 struct nlmsghdr
*nlh
;
976 struct rtnl_link_stats64 temp
;
977 const struct rtnl_link_stats64
*stats
;
978 struct nlattr
*attr
, *af_spec
;
979 struct rtnl_af_ops
*af_ops
;
980 struct net_device
*upper_dev
= netdev_master_upper_dev_get(dev
);
983 nlh
= nlmsg_put(skb
, pid
, seq
, type
, sizeof(*ifm
), flags
);
987 ifm
= nlmsg_data(nlh
);
988 ifm
->ifi_family
= AF_UNSPEC
;
990 ifm
->ifi_type
= dev
->type
;
991 ifm
->ifi_index
= dev
->ifindex
;
992 ifm
->ifi_flags
= dev_get_flags(dev
);
993 ifm
->ifi_change
= change
;
995 if (nla_put_string(skb
, IFLA_IFNAME
, dev
->name
) ||
996 nla_put_u32(skb
, IFLA_TXQLEN
, dev
->tx_queue_len
) ||
997 nla_put_u8(skb
, IFLA_OPERSTATE
,
998 netif_running(dev
) ? dev
->operstate
: IF_OPER_DOWN
) ||
999 nla_put_u8(skb
, IFLA_LINKMODE
, dev
->link_mode
) ||
1000 nla_put_u32(skb
, IFLA_MTU
, dev
->mtu
) ||
1001 nla_put_u32(skb
, IFLA_GROUP
, dev
->group
) ||
1002 nla_put_u32(skb
, IFLA_PROMISCUITY
, dev
->promiscuity
) ||
1003 nla_put_u32(skb
, IFLA_NUM_TX_QUEUES
, dev
->num_tx_queues
) ||
1005 nla_put_u32(skb
, IFLA_NUM_RX_QUEUES
, dev
->num_rx_queues
) ||
1007 (dev
->ifindex
!= dev
->iflink
&&
1008 nla_put_u32(skb
, IFLA_LINK
, dev
->iflink
)) ||
1010 nla_put_u32(skb
, IFLA_MASTER
, upper_dev
->ifindex
)) ||
1011 nla_put_u8(skb
, IFLA_CARRIER
, netif_carrier_ok(dev
)) ||
1013 nla_put_string(skb
, IFLA_QDISC
, dev
->qdisc
->ops
->id
)) ||
1015 nla_put_string(skb
, IFLA_IFALIAS
, dev
->ifalias
)) ||
1016 nla_put_u32(skb
, IFLA_CARRIER_CHANGES
,
1017 atomic_read(&dev
->carrier_changes
)))
1018 goto nla_put_failure
;
1021 struct rtnl_link_ifmap map
= {
1022 .mem_start
= dev
->mem_start
,
1023 .mem_end
= dev
->mem_end
,
1024 .base_addr
= dev
->base_addr
,
1027 .port
= dev
->if_port
,
1029 if (nla_put(skb
, IFLA_MAP
, sizeof(map
), &map
))
1030 goto nla_put_failure
;
1033 if (dev
->addr_len
) {
1034 if (nla_put(skb
, IFLA_ADDRESS
, dev
->addr_len
, dev
->dev_addr
) ||
1035 nla_put(skb
, IFLA_BROADCAST
, dev
->addr_len
, dev
->broadcast
))
1036 goto nla_put_failure
;
1039 if (rtnl_phys_port_id_fill(skb
, dev
))
1040 goto nla_put_failure
;
1042 attr
= nla_reserve(skb
, IFLA_STATS
,
1043 sizeof(struct rtnl_link_stats
));
1045 goto nla_put_failure
;
1047 stats
= dev_get_stats(dev
, &temp
);
1048 copy_rtnl_link_stats(nla_data(attr
), stats
);
1050 attr
= nla_reserve(skb
, IFLA_STATS64
,
1051 sizeof(struct rtnl_link_stats64
));
1053 goto nla_put_failure
;
1054 copy_rtnl_link_stats64(nla_data(attr
), stats
);
1056 if (dev
->dev
.parent
&& (ext_filter_mask
& RTEXT_FILTER_VF
) &&
1057 nla_put_u32(skb
, IFLA_NUM_VF
, dev_num_vf(dev
->dev
.parent
)))
1058 goto nla_put_failure
;
1060 if (dev
->netdev_ops
->ndo_get_vf_config
&& dev
->dev
.parent
1061 && (ext_filter_mask
& RTEXT_FILTER_VF
)) {
1064 struct nlattr
*vfinfo
, *vf
;
1065 int num_vfs
= dev_num_vf(dev
->dev
.parent
);
1067 vfinfo
= nla_nest_start(skb
, IFLA_VFINFO_LIST
);
1069 goto nla_put_failure
;
1070 for (i
= 0; i
< num_vfs
; i
++) {
1071 struct ifla_vf_info ivi
;
1072 struct ifla_vf_mac vf_mac
;
1073 struct ifla_vf_vlan vf_vlan
;
1074 struct ifla_vf_rate vf_rate
;
1075 struct ifla_vf_tx_rate vf_tx_rate
;
1076 struct ifla_vf_spoofchk vf_spoofchk
;
1077 struct ifla_vf_link_state vf_linkstate
;
1080 * Not all SR-IOV capable drivers support the
1081 * spoofcheck query. Preset to -1 so the user
1082 * space tool can detect that the driver didn't
1086 memset(ivi
.mac
, 0, sizeof(ivi
.mac
));
1087 /* The default value for VF link state is "auto"
1088 * IFLA_VF_LINK_STATE_AUTO which equals zero
1091 if (dev
->netdev_ops
->ndo_get_vf_config(dev
, i
, &ivi
))
1098 vf_linkstate
.vf
= ivi
.vf
;
1100 memcpy(vf_mac
.mac
, ivi
.mac
, sizeof(ivi
.mac
));
1101 vf_vlan
.vlan
= ivi
.vlan
;
1102 vf_vlan
.qos
= ivi
.qos
;
1103 vf_tx_rate
.rate
= ivi
.max_tx_rate
;
1104 vf_rate
.min_tx_rate
= ivi
.min_tx_rate
;
1105 vf_rate
.max_tx_rate
= ivi
.max_tx_rate
;
1106 vf_spoofchk
.setting
= ivi
.spoofchk
;
1107 vf_linkstate
.link_state
= ivi
.linkstate
;
1108 vf
= nla_nest_start(skb
, IFLA_VF_INFO
);
1110 nla_nest_cancel(skb
, vfinfo
);
1111 goto nla_put_failure
;
1113 if (nla_put(skb
, IFLA_VF_MAC
, sizeof(vf_mac
), &vf_mac
) ||
1114 nla_put(skb
, IFLA_VF_VLAN
, sizeof(vf_vlan
), &vf_vlan
) ||
1115 nla_put(skb
, IFLA_VF_RATE
, sizeof(vf_rate
),
1117 nla_put(skb
, IFLA_VF_TX_RATE
, sizeof(vf_tx_rate
),
1119 nla_put(skb
, IFLA_VF_SPOOFCHK
, sizeof(vf_spoofchk
),
1121 nla_put(skb
, IFLA_VF_LINK_STATE
, sizeof(vf_linkstate
),
1123 goto nla_put_failure
;
1124 nla_nest_end(skb
, vf
);
1126 nla_nest_end(skb
, vfinfo
);
1129 if (rtnl_port_fill(skb
, dev
, ext_filter_mask
))
1130 goto nla_put_failure
;
1132 if (dev
->rtnl_link_ops
|| rtnl_have_link_slave_info(dev
)) {
1133 if (rtnl_link_fill(skb
, dev
) < 0)
1134 goto nla_put_failure
;
1137 if (!(af_spec
= nla_nest_start(skb
, IFLA_AF_SPEC
)))
1138 goto nla_put_failure
;
1140 list_for_each_entry(af_ops
, &rtnl_af_ops
, list
) {
1141 if (af_ops
->fill_link_af
) {
1145 if (!(af
= nla_nest_start(skb
, af_ops
->family
)))
1146 goto nla_put_failure
;
1148 err
= af_ops
->fill_link_af(skb
, dev
);
1151 * Caller may return ENODATA to indicate that there
1152 * was no data to be dumped. This is not an error, it
1153 * means we should trim the attribute header and
1156 if (err
== -ENODATA
)
1157 nla_nest_cancel(skb
, af
);
1159 goto nla_put_failure
;
1161 nla_nest_end(skb
, af
);
1165 nla_nest_end(skb
, af_spec
);
1167 return nlmsg_end(skb
, nlh
);
1170 nlmsg_cancel(skb
, nlh
);
1174 static const struct nla_policy ifla_policy
[IFLA_MAX
+1] = {
1175 [IFLA_IFNAME
] = { .type
= NLA_STRING
, .len
= IFNAMSIZ
-1 },
1176 [IFLA_ADDRESS
] = { .type
= NLA_BINARY
, .len
= MAX_ADDR_LEN
},
1177 [IFLA_BROADCAST
] = { .type
= NLA_BINARY
, .len
= MAX_ADDR_LEN
},
1178 [IFLA_MAP
] = { .len
= sizeof(struct rtnl_link_ifmap
) },
1179 [IFLA_MTU
] = { .type
= NLA_U32
},
1180 [IFLA_LINK
] = { .type
= NLA_U32
},
1181 [IFLA_MASTER
] = { .type
= NLA_U32
},
1182 [IFLA_CARRIER
] = { .type
= NLA_U8
},
1183 [IFLA_TXQLEN
] = { .type
= NLA_U32
},
1184 [IFLA_WEIGHT
] = { .type
= NLA_U32
},
1185 [IFLA_OPERSTATE
] = { .type
= NLA_U8
},
1186 [IFLA_LINKMODE
] = { .type
= NLA_U8
},
1187 [IFLA_LINKINFO
] = { .type
= NLA_NESTED
},
1188 [IFLA_NET_NS_PID
] = { .type
= NLA_U32
},
1189 [IFLA_NET_NS_FD
] = { .type
= NLA_U32
},
1190 [IFLA_IFALIAS
] = { .type
= NLA_STRING
, .len
= IFALIASZ
-1 },
1191 [IFLA_VFINFO_LIST
] = {. type
= NLA_NESTED
},
1192 [IFLA_VF_PORTS
] = { .type
= NLA_NESTED
},
1193 [IFLA_PORT_SELF
] = { .type
= NLA_NESTED
},
1194 [IFLA_AF_SPEC
] = { .type
= NLA_NESTED
},
1195 [IFLA_EXT_MASK
] = { .type
= NLA_U32
},
1196 [IFLA_PROMISCUITY
] = { .type
= NLA_U32
},
1197 [IFLA_NUM_TX_QUEUES
] = { .type
= NLA_U32
},
1198 [IFLA_NUM_RX_QUEUES
] = { .type
= NLA_U32
},
1199 [IFLA_PHYS_PORT_ID
] = { .type
= NLA_BINARY
, .len
= MAX_PHYS_PORT_ID_LEN
},
1200 [IFLA_CARRIER_CHANGES
] = { .type
= NLA_U32
}, /* ignored */
1203 static const struct nla_policy ifla_info_policy
[IFLA_INFO_MAX
+1] = {
1204 [IFLA_INFO_KIND
] = { .type
= NLA_STRING
},
1205 [IFLA_INFO_DATA
] = { .type
= NLA_NESTED
},
1206 [IFLA_INFO_SLAVE_KIND
] = { .type
= NLA_STRING
},
1207 [IFLA_INFO_SLAVE_DATA
] = { .type
= NLA_NESTED
},
1210 static const struct nla_policy ifla_vfinfo_policy
[IFLA_VF_INFO_MAX
+1] = {
1211 [IFLA_VF_INFO
] = { .type
= NLA_NESTED
},
1214 static const struct nla_policy ifla_vf_policy
[IFLA_VF_MAX
+1] = {
1215 [IFLA_VF_MAC
] = { .type
= NLA_BINARY
,
1216 .len
= sizeof(struct ifla_vf_mac
) },
1217 [IFLA_VF_VLAN
] = { .type
= NLA_BINARY
,
1218 .len
= sizeof(struct ifla_vf_vlan
) },
1219 [IFLA_VF_TX_RATE
] = { .type
= NLA_BINARY
,
1220 .len
= sizeof(struct ifla_vf_tx_rate
) },
1221 [IFLA_VF_SPOOFCHK
] = { .type
= NLA_BINARY
,
1222 .len
= sizeof(struct ifla_vf_spoofchk
) },
1223 [IFLA_VF_RATE
] = { .type
= NLA_BINARY
,
1224 .len
= sizeof(struct ifla_vf_rate
) },
1225 [IFLA_VF_LINK_STATE
] = { .type
= NLA_BINARY
,
1226 .len
= sizeof(struct ifla_vf_link_state
) },
1229 static const struct nla_policy ifla_port_policy
[IFLA_PORT_MAX
+1] = {
1230 [IFLA_PORT_VF
] = { .type
= NLA_U32
},
1231 [IFLA_PORT_PROFILE
] = { .type
= NLA_STRING
,
1232 .len
= PORT_PROFILE_MAX
},
1233 [IFLA_PORT_VSI_TYPE
] = { .type
= NLA_BINARY
,
1234 .len
= sizeof(struct ifla_port_vsi
)},
1235 [IFLA_PORT_INSTANCE_UUID
] = { .type
= NLA_BINARY
,
1236 .len
= PORT_UUID_MAX
},
1237 [IFLA_PORT_HOST_UUID
] = { .type
= NLA_STRING
,
1238 .len
= PORT_UUID_MAX
},
1239 [IFLA_PORT_REQUEST
] = { .type
= NLA_U8
, },
1240 [IFLA_PORT_RESPONSE
] = { .type
= NLA_U16
, },
1243 static int rtnl_dump_ifinfo(struct sk_buff
*skb
, struct netlink_callback
*cb
)
1245 struct net
*net
= sock_net(skb
->sk
);
1248 struct net_device
*dev
;
1249 struct hlist_head
*head
;
1250 struct nlattr
*tb
[IFLA_MAX
+1];
1251 u32 ext_filter_mask
= 0;
1256 s_idx
= cb
->args
[1];
1259 cb
->seq
= net
->dev_base_seq
;
1261 /* A hack to preserve kernel<->userspace interface.
1262 * The correct header is ifinfomsg. It is consistent with rtnl_getlink.
1263 * However, before Linux v3.9 the code here assumed rtgenmsg and that's
1264 * what iproute2 < v3.9.0 used.
1265 * We can detect the old iproute2. Even including the IFLA_EXT_MASK
1266 * attribute, its netlink message is shorter than struct ifinfomsg.
1268 hdrlen
= nlmsg_len(cb
->nlh
) < sizeof(struct ifinfomsg
) ?
1269 sizeof(struct rtgenmsg
) : sizeof(struct ifinfomsg
);
1271 if (nlmsg_parse(cb
->nlh
, hdrlen
, tb
, IFLA_MAX
, ifla_policy
) >= 0) {
1273 if (tb
[IFLA_EXT_MASK
])
1274 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
1277 for (h
= s_h
; h
< NETDEV_HASHENTRIES
; h
++, s_idx
= 0) {
1279 head
= &net
->dev_index_head
[h
];
1280 hlist_for_each_entry_rcu(dev
, head
, index_hlist
) {
1283 err
= rtnl_fill_ifinfo(skb
, dev
, RTM_NEWLINK
,
1284 NETLINK_CB(cb
->skb
).portid
,
1285 cb
->nlh
->nlmsg_seq
, 0,
1288 /* If we ran out of room on the first message,
1291 WARN_ON((err
== -EMSGSIZE
) && (skb
->len
== 0));
1296 nl_dump_check_consistent(cb
, nlmsg_hdr(skb
));
1309 int rtnl_nla_parse_ifla(struct nlattr
**tb
, const struct nlattr
*head
, int len
)
1311 return nla_parse(tb
, IFLA_MAX
, head
, len
, ifla_policy
);
1313 EXPORT_SYMBOL(rtnl_nla_parse_ifla
);
1315 struct net
*rtnl_link_get_net(struct net
*src_net
, struct nlattr
*tb
[])
1318 /* Examine the link attributes and figure out which
1319 * network namespace we are talking about.
1321 if (tb
[IFLA_NET_NS_PID
])
1322 net
= get_net_ns_by_pid(nla_get_u32(tb
[IFLA_NET_NS_PID
]));
1323 else if (tb
[IFLA_NET_NS_FD
])
1324 net
= get_net_ns_by_fd(nla_get_u32(tb
[IFLA_NET_NS_FD
]));
1326 net
= get_net(src_net
);
1329 EXPORT_SYMBOL(rtnl_link_get_net
);
1331 static int validate_linkmsg(struct net_device
*dev
, struct nlattr
*tb
[])
1334 if (tb
[IFLA_ADDRESS
] &&
1335 nla_len(tb
[IFLA_ADDRESS
]) < dev
->addr_len
)
1338 if (tb
[IFLA_BROADCAST
] &&
1339 nla_len(tb
[IFLA_BROADCAST
]) < dev
->addr_len
)
1343 if (tb
[IFLA_AF_SPEC
]) {
1347 nla_for_each_nested(af
, tb
[IFLA_AF_SPEC
], rem
) {
1348 const struct rtnl_af_ops
*af_ops
;
1350 if (!(af_ops
= rtnl_af_lookup(nla_type(af
))))
1351 return -EAFNOSUPPORT
;
1353 if (!af_ops
->set_link_af
)
1356 if (af_ops
->validate_link_af
) {
1357 err
= af_ops
->validate_link_af(dev
, af
);
1367 static int do_setvfinfo(struct net_device
*dev
, struct nlattr
*attr
)
1369 int rem
, err
= -EINVAL
;
1371 const struct net_device_ops
*ops
= dev
->netdev_ops
;
1373 nla_for_each_nested(vf
, attr
, rem
) {
1374 switch (nla_type(vf
)) {
1376 struct ifla_vf_mac
*ivm
;
1379 if (ops
->ndo_set_vf_mac
)
1380 err
= ops
->ndo_set_vf_mac(dev
, ivm
->vf
,
1384 case IFLA_VF_VLAN
: {
1385 struct ifla_vf_vlan
*ivv
;
1388 if (ops
->ndo_set_vf_vlan
)
1389 err
= ops
->ndo_set_vf_vlan(dev
, ivv
->vf
,
1394 case IFLA_VF_TX_RATE
: {
1395 struct ifla_vf_tx_rate
*ivt
;
1396 struct ifla_vf_info ivf
;
1399 if (ops
->ndo_get_vf_config
)
1400 err
= ops
->ndo_get_vf_config(dev
, ivt
->vf
,
1405 if (ops
->ndo_set_vf_rate
)
1406 err
= ops
->ndo_set_vf_rate(dev
, ivt
->vf
,
1411 case IFLA_VF_RATE
: {
1412 struct ifla_vf_rate
*ivt
;
1415 if (ops
->ndo_set_vf_rate
)
1416 err
= ops
->ndo_set_vf_rate(dev
, ivt
->vf
,
1421 case IFLA_VF_SPOOFCHK
: {
1422 struct ifla_vf_spoofchk
*ivs
;
1425 if (ops
->ndo_set_vf_spoofchk
)
1426 err
= ops
->ndo_set_vf_spoofchk(dev
, ivs
->vf
,
1430 case IFLA_VF_LINK_STATE
: {
1431 struct ifla_vf_link_state
*ivl
;
1434 if (ops
->ndo_set_vf_link_state
)
1435 err
= ops
->ndo_set_vf_link_state(dev
, ivl
->vf
,
1449 static int do_set_master(struct net_device
*dev
, int ifindex
)
1451 struct net_device
*upper_dev
= netdev_master_upper_dev_get(dev
);
1452 const struct net_device_ops
*ops
;
1456 if (upper_dev
->ifindex
== ifindex
)
1458 ops
= upper_dev
->netdev_ops
;
1459 if (ops
->ndo_del_slave
) {
1460 err
= ops
->ndo_del_slave(upper_dev
, dev
);
1469 upper_dev
= __dev_get_by_index(dev_net(dev
), ifindex
);
1472 ops
= upper_dev
->netdev_ops
;
1473 if (ops
->ndo_add_slave
) {
1474 err
= ops
->ndo_add_slave(upper_dev
, dev
);
1484 #define DO_SETLINK_MODIFIED 0x01
1485 /* notify flag means notify + modified. */
1486 #define DO_SETLINK_NOTIFY 0x03
1487 static int do_setlink(const struct sk_buff
*skb
,
1488 struct net_device
*dev
, struct ifinfomsg
*ifm
,
1489 struct nlattr
**tb
, char *ifname
, int status
)
1491 const struct net_device_ops
*ops
= dev
->netdev_ops
;
1494 if (tb
[IFLA_NET_NS_PID
] || tb
[IFLA_NET_NS_FD
]) {
1495 struct net
*net
= rtnl_link_get_net(dev_net(dev
), tb
);
1500 if (!netlink_ns_capable(skb
, net
->user_ns
, CAP_NET_ADMIN
)) {
1504 err
= dev_change_net_namespace(dev
, net
, ifname
);
1508 status
|= DO_SETLINK_MODIFIED
;
1512 struct rtnl_link_ifmap
*u_map
;
1515 if (!ops
->ndo_set_config
) {
1520 if (!netif_device_present(dev
)) {
1525 u_map
= nla_data(tb
[IFLA_MAP
]);
1526 k_map
.mem_start
= (unsigned long) u_map
->mem_start
;
1527 k_map
.mem_end
= (unsigned long) u_map
->mem_end
;
1528 k_map
.base_addr
= (unsigned short) u_map
->base_addr
;
1529 k_map
.irq
= (unsigned char) u_map
->irq
;
1530 k_map
.dma
= (unsigned char) u_map
->dma
;
1531 k_map
.port
= (unsigned char) u_map
->port
;
1533 err
= ops
->ndo_set_config(dev
, &k_map
);
1537 status
|= DO_SETLINK_NOTIFY
;
1540 if (tb
[IFLA_ADDRESS
]) {
1541 struct sockaddr
*sa
;
1544 len
= sizeof(sa_family_t
) + dev
->addr_len
;
1545 sa
= kmalloc(len
, GFP_KERNEL
);
1550 sa
->sa_family
= dev
->type
;
1551 memcpy(sa
->sa_data
, nla_data(tb
[IFLA_ADDRESS
]),
1553 err
= dev_set_mac_address(dev
, sa
);
1557 status
|= DO_SETLINK_MODIFIED
;
1561 err
= dev_set_mtu(dev
, nla_get_u32(tb
[IFLA_MTU
]));
1564 status
|= DO_SETLINK_MODIFIED
;
1567 if (tb
[IFLA_GROUP
]) {
1568 dev_set_group(dev
, nla_get_u32(tb
[IFLA_GROUP
]));
1569 status
|= DO_SETLINK_NOTIFY
;
1573 * Interface selected by interface index but interface
1574 * name provided implies that a name change has been
1577 if (ifm
->ifi_index
> 0 && ifname
[0]) {
1578 err
= dev_change_name(dev
, ifname
);
1581 status
|= DO_SETLINK_MODIFIED
;
1584 if (tb
[IFLA_IFALIAS
]) {
1585 err
= dev_set_alias(dev
, nla_data(tb
[IFLA_IFALIAS
]),
1586 nla_len(tb
[IFLA_IFALIAS
]));
1589 status
|= DO_SETLINK_NOTIFY
;
1592 if (tb
[IFLA_BROADCAST
]) {
1593 nla_memcpy(dev
->broadcast
, tb
[IFLA_BROADCAST
], dev
->addr_len
);
1594 call_netdevice_notifiers(NETDEV_CHANGEADDR
, dev
);
1597 if (ifm
->ifi_flags
|| ifm
->ifi_change
) {
1598 err
= dev_change_flags(dev
, rtnl_dev_combine_flags(dev
, ifm
));
1603 if (tb
[IFLA_MASTER
]) {
1604 err
= do_set_master(dev
, nla_get_u32(tb
[IFLA_MASTER
]));
1607 status
|= DO_SETLINK_MODIFIED
;
1610 if (tb
[IFLA_CARRIER
]) {
1611 err
= dev_change_carrier(dev
, nla_get_u8(tb
[IFLA_CARRIER
]));
1614 status
|= DO_SETLINK_MODIFIED
;
1617 if (tb
[IFLA_TXQLEN
]) {
1618 unsigned long value
= nla_get_u32(tb
[IFLA_TXQLEN
]);
1620 if (dev
->tx_queue_len
^ value
)
1621 status
|= DO_SETLINK_NOTIFY
;
1623 dev
->tx_queue_len
= value
;
1626 if (tb
[IFLA_OPERSTATE
])
1627 set_operstate(dev
, nla_get_u8(tb
[IFLA_OPERSTATE
]));
1629 if (tb
[IFLA_LINKMODE
]) {
1630 unsigned char value
= nla_get_u8(tb
[IFLA_LINKMODE
]);
1632 write_lock_bh(&dev_base_lock
);
1633 if (dev
->link_mode
^ value
)
1634 status
|= DO_SETLINK_NOTIFY
;
1635 dev
->link_mode
= value
;
1636 write_unlock_bh(&dev_base_lock
);
1639 if (tb
[IFLA_VFINFO_LIST
]) {
1640 struct nlattr
*attr
;
1642 nla_for_each_nested(attr
, tb
[IFLA_VFINFO_LIST
], rem
) {
1643 if (nla_type(attr
) != IFLA_VF_INFO
) {
1647 err
= do_setvfinfo(dev
, attr
);
1650 status
|= DO_SETLINK_NOTIFY
;
1655 if (tb
[IFLA_VF_PORTS
]) {
1656 struct nlattr
*port
[IFLA_PORT_MAX
+1];
1657 struct nlattr
*attr
;
1662 if (!ops
->ndo_set_vf_port
)
1665 nla_for_each_nested(attr
, tb
[IFLA_VF_PORTS
], rem
) {
1666 if (nla_type(attr
) != IFLA_VF_PORT
)
1668 err
= nla_parse_nested(port
, IFLA_PORT_MAX
,
1669 attr
, ifla_port_policy
);
1672 if (!port
[IFLA_PORT_VF
]) {
1676 vf
= nla_get_u32(port
[IFLA_PORT_VF
]);
1677 err
= ops
->ndo_set_vf_port(dev
, vf
, port
);
1680 status
|= DO_SETLINK_NOTIFY
;
1685 if (tb
[IFLA_PORT_SELF
]) {
1686 struct nlattr
*port
[IFLA_PORT_MAX
+1];
1688 err
= nla_parse_nested(port
, IFLA_PORT_MAX
,
1689 tb
[IFLA_PORT_SELF
], ifla_port_policy
);
1694 if (ops
->ndo_set_vf_port
)
1695 err
= ops
->ndo_set_vf_port(dev
, PORT_SELF_VF
, port
);
1698 status
|= DO_SETLINK_NOTIFY
;
1701 if (tb
[IFLA_AF_SPEC
]) {
1705 nla_for_each_nested(af
, tb
[IFLA_AF_SPEC
], rem
) {
1706 const struct rtnl_af_ops
*af_ops
;
1708 if (!(af_ops
= rtnl_af_lookup(nla_type(af
))))
1711 err
= af_ops
->set_link_af(dev
, af
);
1715 status
|= DO_SETLINK_NOTIFY
;
1721 if (status
& DO_SETLINK_MODIFIED
) {
1722 if (status
& DO_SETLINK_NOTIFY
)
1723 netdev_state_change(dev
);
1726 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",
1733 static int rtnl_setlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
1735 struct net
*net
= sock_net(skb
->sk
);
1736 struct ifinfomsg
*ifm
;
1737 struct net_device
*dev
;
1739 struct nlattr
*tb
[IFLA_MAX
+1];
1740 char ifname
[IFNAMSIZ
];
1742 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
1746 if (tb
[IFLA_IFNAME
])
1747 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
1752 ifm
= nlmsg_data(nlh
);
1753 if (ifm
->ifi_index
> 0)
1754 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
1755 else if (tb
[IFLA_IFNAME
])
1756 dev
= __dev_get_by_name(net
, ifname
);
1765 err
= validate_linkmsg(dev
, tb
);
1769 err
= do_setlink(skb
, dev
, ifm
, tb
, ifname
, 0);
1774 static int rtnl_dellink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
1776 struct net
*net
= sock_net(skb
->sk
);
1777 const struct rtnl_link_ops
*ops
;
1778 struct net_device
*dev
;
1779 struct ifinfomsg
*ifm
;
1780 char ifname
[IFNAMSIZ
];
1781 struct nlattr
*tb
[IFLA_MAX
+1];
1783 LIST_HEAD(list_kill
);
1785 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
1789 if (tb
[IFLA_IFNAME
])
1790 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
1792 ifm
= nlmsg_data(nlh
);
1793 if (ifm
->ifi_index
> 0)
1794 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
1795 else if (tb
[IFLA_IFNAME
])
1796 dev
= __dev_get_by_name(net
, ifname
);
1803 ops
= dev
->rtnl_link_ops
;
1804 if (!ops
|| !ops
->dellink
)
1807 ops
->dellink(dev
, &list_kill
);
1808 unregister_netdevice_many(&list_kill
);
1812 int rtnl_configure_link(struct net_device
*dev
, const struct ifinfomsg
*ifm
)
1814 unsigned int old_flags
;
1817 old_flags
= dev
->flags
;
1818 if (ifm
&& (ifm
->ifi_flags
|| ifm
->ifi_change
)) {
1819 err
= __dev_change_flags(dev
, rtnl_dev_combine_flags(dev
, ifm
));
1824 dev
->rtnl_link_state
= RTNL_LINK_INITIALIZED
;
1826 __dev_notify_flags(dev
, old_flags
, ~0U);
1829 EXPORT_SYMBOL(rtnl_configure_link
);
1831 struct net_device
*rtnl_create_link(struct net
*net
,
1832 char *ifname
, unsigned char name_assign_type
,
1833 const struct rtnl_link_ops
*ops
, struct nlattr
*tb
[])
1836 struct net_device
*dev
;
1837 unsigned int num_tx_queues
= 1;
1838 unsigned int num_rx_queues
= 1;
1840 if (tb
[IFLA_NUM_TX_QUEUES
])
1841 num_tx_queues
= nla_get_u32(tb
[IFLA_NUM_TX_QUEUES
]);
1842 else if (ops
->get_num_tx_queues
)
1843 num_tx_queues
= ops
->get_num_tx_queues();
1845 if (tb
[IFLA_NUM_RX_QUEUES
])
1846 num_rx_queues
= nla_get_u32(tb
[IFLA_NUM_RX_QUEUES
]);
1847 else if (ops
->get_num_rx_queues
)
1848 num_rx_queues
= ops
->get_num_rx_queues();
1851 dev
= alloc_netdev_mqs(ops
->priv_size
, ifname
, name_assign_type
,
1852 ops
->setup
, num_tx_queues
, num_rx_queues
);
1856 dev_net_set(dev
, net
);
1857 dev
->rtnl_link_ops
= ops
;
1858 dev
->rtnl_link_state
= RTNL_LINK_INITIALIZING
;
1861 dev
->mtu
= nla_get_u32(tb
[IFLA_MTU
]);
1862 if (tb
[IFLA_ADDRESS
]) {
1863 memcpy(dev
->dev_addr
, nla_data(tb
[IFLA_ADDRESS
]),
1864 nla_len(tb
[IFLA_ADDRESS
]));
1865 dev
->addr_assign_type
= NET_ADDR_SET
;
1867 if (tb
[IFLA_BROADCAST
])
1868 memcpy(dev
->broadcast
, nla_data(tb
[IFLA_BROADCAST
]),
1869 nla_len(tb
[IFLA_BROADCAST
]));
1870 if (tb
[IFLA_TXQLEN
])
1871 dev
->tx_queue_len
= nla_get_u32(tb
[IFLA_TXQLEN
]);
1872 if (tb
[IFLA_OPERSTATE
])
1873 set_operstate(dev
, nla_get_u8(tb
[IFLA_OPERSTATE
]));
1874 if (tb
[IFLA_LINKMODE
])
1875 dev
->link_mode
= nla_get_u8(tb
[IFLA_LINKMODE
]);
1877 dev_set_group(dev
, nla_get_u32(tb
[IFLA_GROUP
]));
1882 return ERR_PTR(err
);
1884 EXPORT_SYMBOL(rtnl_create_link
);
1886 static int rtnl_group_changelink(const struct sk_buff
*skb
,
1887 struct net
*net
, int group
,
1888 struct ifinfomsg
*ifm
,
1891 struct net_device
*dev
;
1894 for_each_netdev(net
, dev
) {
1895 if (dev
->group
== group
) {
1896 err
= do_setlink(skb
, dev
, ifm
, tb
, NULL
, 0);
1905 static int rtnl_newlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
1907 struct net
*net
= sock_net(skb
->sk
);
1908 const struct rtnl_link_ops
*ops
;
1909 const struct rtnl_link_ops
*m_ops
= NULL
;
1910 struct net_device
*dev
;
1911 struct net_device
*master_dev
= NULL
;
1912 struct ifinfomsg
*ifm
;
1913 char kind
[MODULE_NAME_LEN
];
1914 char ifname
[IFNAMSIZ
];
1915 struct nlattr
*tb
[IFLA_MAX
+1];
1916 struct nlattr
*linkinfo
[IFLA_INFO_MAX
+1];
1917 unsigned char name_assign_type
= NET_NAME_USER
;
1920 #ifdef CONFIG_MODULES
1923 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
1927 if (tb
[IFLA_IFNAME
])
1928 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
1932 ifm
= nlmsg_data(nlh
);
1933 if (ifm
->ifi_index
> 0)
1934 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
1937 dev
= __dev_get_by_name(net
, ifname
);
1943 master_dev
= netdev_master_upper_dev_get(dev
);
1945 m_ops
= master_dev
->rtnl_link_ops
;
1948 err
= validate_linkmsg(dev
, tb
);
1952 if (tb
[IFLA_LINKINFO
]) {
1953 err
= nla_parse_nested(linkinfo
, IFLA_INFO_MAX
,
1954 tb
[IFLA_LINKINFO
], ifla_info_policy
);
1958 memset(linkinfo
, 0, sizeof(linkinfo
));
1960 if (linkinfo
[IFLA_INFO_KIND
]) {
1961 nla_strlcpy(kind
, linkinfo
[IFLA_INFO_KIND
], sizeof(kind
));
1962 ops
= rtnl_link_ops_get(kind
);
1969 struct nlattr
*attr
[ops
? ops
->maxtype
+ 1 : 0];
1970 struct nlattr
*slave_attr
[m_ops
? m_ops
->slave_maxtype
+ 1 : 0];
1971 struct nlattr
**data
= NULL
;
1972 struct nlattr
**slave_data
= NULL
;
1973 struct net
*dest_net
;
1976 if (ops
->maxtype
&& linkinfo
[IFLA_INFO_DATA
]) {
1977 err
= nla_parse_nested(attr
, ops
->maxtype
,
1978 linkinfo
[IFLA_INFO_DATA
],
1984 if (ops
->validate
) {
1985 err
= ops
->validate(tb
, data
);
1992 if (m_ops
->slave_maxtype
&&
1993 linkinfo
[IFLA_INFO_SLAVE_DATA
]) {
1994 err
= nla_parse_nested(slave_attr
,
1995 m_ops
->slave_maxtype
,
1996 linkinfo
[IFLA_INFO_SLAVE_DATA
],
1997 m_ops
->slave_policy
);
2000 slave_data
= slave_attr
;
2002 if (m_ops
->slave_validate
) {
2003 err
= m_ops
->slave_validate(tb
, slave_data
);
2012 if (nlh
->nlmsg_flags
& NLM_F_EXCL
)
2014 if (nlh
->nlmsg_flags
& NLM_F_REPLACE
)
2017 if (linkinfo
[IFLA_INFO_DATA
]) {
2018 if (!ops
|| ops
!= dev
->rtnl_link_ops
||
2022 err
= ops
->changelink(dev
, tb
, data
);
2025 status
|= DO_SETLINK_NOTIFY
;
2028 if (linkinfo
[IFLA_INFO_SLAVE_DATA
]) {
2029 if (!m_ops
|| !m_ops
->slave_changelink
)
2032 err
= m_ops
->slave_changelink(master_dev
, dev
,
2036 status
|= DO_SETLINK_NOTIFY
;
2039 return do_setlink(skb
, dev
, ifm
, tb
, ifname
, status
);
2042 if (!(nlh
->nlmsg_flags
& NLM_F_CREATE
)) {
2043 if (ifm
->ifi_index
== 0 && tb
[IFLA_GROUP
])
2044 return rtnl_group_changelink(skb
, net
,
2045 nla_get_u32(tb
[IFLA_GROUP
]),
2050 if (tb
[IFLA_MAP
] || tb
[IFLA_MASTER
] || tb
[IFLA_PROTINFO
])
2054 #ifdef CONFIG_MODULES
2057 request_module("rtnl-link-%s", kind
);
2059 ops
= rtnl_link_ops_get(kind
);
2071 snprintf(ifname
, IFNAMSIZ
, "%s%%d", ops
->kind
);
2072 name_assign_type
= NET_NAME_ENUM
;
2075 dest_net
= rtnl_link_get_net(net
, tb
);
2076 if (IS_ERR(dest_net
))
2077 return PTR_ERR(dest_net
);
2079 dev
= rtnl_create_link(dest_net
, ifname
, name_assign_type
, ops
, tb
);
2085 dev
->ifindex
= ifm
->ifi_index
;
2088 err
= ops
->newlink(net
, dev
, tb
, data
);
2089 /* Drivers should call free_netdev() in ->destructor
2090 * and unregister it on failure after registration
2091 * so that device could be finally freed in rtnl_unlock.
2094 /* If device is not registered at all, free it now */
2095 if (dev
->reg_state
== NETREG_UNINITIALIZED
)
2100 err
= register_netdevice(dev
);
2106 err
= rtnl_configure_link(dev
, ifm
);
2108 unregister_netdevice(dev
);
2115 static int rtnl_getlink(struct sk_buff
*skb
, struct nlmsghdr
* nlh
)
2117 struct net
*net
= sock_net(skb
->sk
);
2118 struct ifinfomsg
*ifm
;
2119 char ifname
[IFNAMSIZ
];
2120 struct nlattr
*tb
[IFLA_MAX
+1];
2121 struct net_device
*dev
= NULL
;
2122 struct sk_buff
*nskb
;
2124 u32 ext_filter_mask
= 0;
2126 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
2130 if (tb
[IFLA_IFNAME
])
2131 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
2133 if (tb
[IFLA_EXT_MASK
])
2134 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
2136 ifm
= nlmsg_data(nlh
);
2137 if (ifm
->ifi_index
> 0)
2138 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2139 else if (tb
[IFLA_IFNAME
])
2140 dev
= __dev_get_by_name(net
, ifname
);
2147 nskb
= nlmsg_new(if_nlmsg_size(dev
, ext_filter_mask
), GFP_KERNEL
);
2151 err
= rtnl_fill_ifinfo(nskb
, dev
, RTM_NEWLINK
, NETLINK_CB(skb
).portid
,
2152 nlh
->nlmsg_seq
, 0, 0, ext_filter_mask
);
2154 /* -EMSGSIZE implies BUG in if_nlmsg_size */
2155 WARN_ON(err
== -EMSGSIZE
);
2158 err
= rtnl_unicast(nskb
, net
, NETLINK_CB(skb
).portid
);
2163 static u16
rtnl_calcit(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2165 struct net
*net
= sock_net(skb
->sk
);
2166 struct net_device
*dev
;
2167 struct nlattr
*tb
[IFLA_MAX
+1];
2168 u32 ext_filter_mask
= 0;
2169 u16 min_ifinfo_dump_size
= 0;
2172 /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */
2173 hdrlen
= nlmsg_len(nlh
) < sizeof(struct ifinfomsg
) ?
2174 sizeof(struct rtgenmsg
) : sizeof(struct ifinfomsg
);
2176 if (nlmsg_parse(nlh
, hdrlen
, tb
, IFLA_MAX
, ifla_policy
) >= 0) {
2177 if (tb
[IFLA_EXT_MASK
])
2178 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
2181 if (!ext_filter_mask
)
2182 return NLMSG_GOODSIZE
;
2184 * traverse the list of net devices and compute the minimum
2185 * buffer size based upon the filter mask.
2187 list_for_each_entry(dev
, &net
->dev_base_head
, dev_list
) {
2188 min_ifinfo_dump_size
= max_t(u16
, min_ifinfo_dump_size
,
2193 return min_ifinfo_dump_size
;
2196 static int rtnl_dump_all(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2199 int s_idx
= cb
->family
;
2203 for (idx
= 1; idx
<= RTNL_FAMILY_MAX
; idx
++) {
2204 int type
= cb
->nlh
->nlmsg_type
-RTM_BASE
;
2205 if (idx
< s_idx
|| idx
== PF_PACKET
)
2207 if (rtnl_msg_handlers
[idx
] == NULL
||
2208 rtnl_msg_handlers
[idx
][type
].dumpit
== NULL
)
2211 memset(&cb
->args
[0], 0, sizeof(cb
->args
));
2215 if (rtnl_msg_handlers
[idx
][type
].dumpit(skb
, cb
))
2223 void rtmsg_ifinfo(int type
, struct net_device
*dev
, unsigned int change
,
2226 struct net
*net
= dev_net(dev
);
2227 struct sk_buff
*skb
;
2229 size_t if_info_size
;
2231 skb
= nlmsg_new((if_info_size
= if_nlmsg_size(dev
, 0)), flags
);
2235 err
= rtnl_fill_ifinfo(skb
, dev
, type
, 0, 0, change
, 0, 0);
2237 /* -EMSGSIZE implies BUG in if_nlmsg_size() */
2238 WARN_ON(err
== -EMSGSIZE
);
2242 rtnl_notify(skb
, net
, 0, RTNLGRP_LINK
, NULL
, flags
);
2246 rtnl_set_sk_err(net
, RTNLGRP_LINK
, err
);
2248 EXPORT_SYMBOL(rtmsg_ifinfo
);
2250 static int nlmsg_populate_fdb_fill(struct sk_buff
*skb
,
2251 struct net_device
*dev
,
2252 u8
*addr
, u32 pid
, u32 seq
,
2253 int type
, unsigned int flags
,
2256 struct nlmsghdr
*nlh
;
2259 nlh
= nlmsg_put(skb
, pid
, seq
, type
, sizeof(*ndm
), nlflags
);
2263 ndm
= nlmsg_data(nlh
);
2264 ndm
->ndm_family
= AF_BRIDGE
;
2267 ndm
->ndm_flags
= flags
;
2269 ndm
->ndm_ifindex
= dev
->ifindex
;
2270 ndm
->ndm_state
= NUD_PERMANENT
;
2272 if (nla_put(skb
, NDA_LLADDR
, ETH_ALEN
, addr
))
2273 goto nla_put_failure
;
2275 return nlmsg_end(skb
, nlh
);
2278 nlmsg_cancel(skb
, nlh
);
2282 static inline size_t rtnl_fdb_nlmsg_size(void)
2284 return NLMSG_ALIGN(sizeof(struct ndmsg
)) + nla_total_size(ETH_ALEN
);
2287 static void rtnl_fdb_notify(struct net_device
*dev
, u8
*addr
, int type
)
2289 struct net
*net
= dev_net(dev
);
2290 struct sk_buff
*skb
;
2293 skb
= nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC
);
2297 err
= nlmsg_populate_fdb_fill(skb
, dev
, addr
, 0, 0, type
, NTF_SELF
, 0);
2303 rtnl_notify(skb
, net
, 0, RTNLGRP_NEIGH
, NULL
, GFP_ATOMIC
);
2306 rtnl_set_sk_err(net
, RTNLGRP_NEIGH
, err
);
2310 * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry
2312 int ndo_dflt_fdb_add(struct ndmsg
*ndm
,
2313 struct nlattr
*tb
[],
2314 struct net_device
*dev
,
2315 const unsigned char *addr
,
2320 /* If aging addresses are supported device will need to
2321 * implement its own handler for this.
2323 if (ndm
->ndm_state
&& !(ndm
->ndm_state
& NUD_PERMANENT
)) {
2324 pr_info("%s: FDB only supports static addresses\n", dev
->name
);
2328 if (is_unicast_ether_addr(addr
) || is_link_local_ether_addr(addr
))
2329 err
= dev_uc_add_excl(dev
, addr
);
2330 else if (is_multicast_ether_addr(addr
))
2331 err
= dev_mc_add_excl(dev
, addr
);
2333 /* Only return duplicate errors if NLM_F_EXCL is set */
2334 if (err
== -EEXIST
&& !(flags
& NLM_F_EXCL
))
2339 EXPORT_SYMBOL(ndo_dflt_fdb_add
);
2341 static int rtnl_fdb_add(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2343 struct net
*net
= sock_net(skb
->sk
);
2345 struct nlattr
*tb
[NDA_MAX
+1];
2346 struct net_device
*dev
;
2350 err
= nlmsg_parse(nlh
, sizeof(*ndm
), tb
, NDA_MAX
, NULL
);
2354 ndm
= nlmsg_data(nlh
);
2355 if (ndm
->ndm_ifindex
== 0) {
2356 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n");
2360 dev
= __dev_get_by_index(net
, ndm
->ndm_ifindex
);
2362 pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n");
2366 if (!tb
[NDA_LLADDR
] || nla_len(tb
[NDA_LLADDR
]) != ETH_ALEN
) {
2367 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n");
2371 addr
= nla_data(tb
[NDA_LLADDR
]);
2375 /* Support fdb on master device the net/bridge default case */
2376 if ((!ndm
->ndm_flags
|| ndm
->ndm_flags
& NTF_MASTER
) &&
2377 (dev
->priv_flags
& IFF_BRIDGE_PORT
)) {
2378 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2379 const struct net_device_ops
*ops
= br_dev
->netdev_ops
;
2381 err
= ops
->ndo_fdb_add(ndm
, tb
, dev
, addr
, nlh
->nlmsg_flags
);
2385 ndm
->ndm_flags
&= ~NTF_MASTER
;
2388 /* Embedded bridge, macvlan, and any other device support */
2389 if ((ndm
->ndm_flags
& NTF_SELF
)) {
2390 if (dev
->netdev_ops
->ndo_fdb_add
)
2391 err
= dev
->netdev_ops
->ndo_fdb_add(ndm
, tb
, dev
, addr
,
2394 err
= ndo_dflt_fdb_add(ndm
, tb
, dev
, addr
,
2398 rtnl_fdb_notify(dev
, addr
, RTM_NEWNEIGH
);
2399 ndm
->ndm_flags
&= ~NTF_SELF
;
2407 * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry
2409 int ndo_dflt_fdb_del(struct ndmsg
*ndm
,
2410 struct nlattr
*tb
[],
2411 struct net_device
*dev
,
2412 const unsigned char *addr
)
2416 /* If aging addresses are supported device will need to
2417 * implement its own handler for this.
2419 if (!(ndm
->ndm_state
& NUD_PERMANENT
)) {
2420 pr_info("%s: FDB only supports static addresses\n", dev
->name
);
2424 if (is_unicast_ether_addr(addr
) || is_link_local_ether_addr(addr
))
2425 err
= dev_uc_del(dev
, addr
);
2426 else if (is_multicast_ether_addr(addr
))
2427 err
= dev_mc_del(dev
, addr
);
2431 EXPORT_SYMBOL(ndo_dflt_fdb_del
);
2433 static int rtnl_fdb_del(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2435 struct net
*net
= sock_net(skb
->sk
);
2437 struct nlattr
*tb
[NDA_MAX
+1];
2438 struct net_device
*dev
;
2442 if (!netlink_capable(skb
, CAP_NET_ADMIN
))
2445 err
= nlmsg_parse(nlh
, sizeof(*ndm
), tb
, NDA_MAX
, NULL
);
2449 ndm
= nlmsg_data(nlh
);
2450 if (ndm
->ndm_ifindex
== 0) {
2451 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n");
2455 dev
= __dev_get_by_index(net
, ndm
->ndm_ifindex
);
2457 pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n");
2461 if (!tb
[NDA_LLADDR
] || nla_len(tb
[NDA_LLADDR
]) != ETH_ALEN
) {
2462 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n");
2466 addr
= nla_data(tb
[NDA_LLADDR
]);
2470 /* Support fdb on master device the net/bridge default case */
2471 if ((!ndm
->ndm_flags
|| ndm
->ndm_flags
& NTF_MASTER
) &&
2472 (dev
->priv_flags
& IFF_BRIDGE_PORT
)) {
2473 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2474 const struct net_device_ops
*ops
= br_dev
->netdev_ops
;
2476 if (ops
->ndo_fdb_del
)
2477 err
= ops
->ndo_fdb_del(ndm
, tb
, dev
, addr
);
2482 ndm
->ndm_flags
&= ~NTF_MASTER
;
2485 /* Embedded bridge, macvlan, and any other device support */
2486 if (ndm
->ndm_flags
& NTF_SELF
) {
2487 if (dev
->netdev_ops
->ndo_fdb_del
)
2488 err
= dev
->netdev_ops
->ndo_fdb_del(ndm
, tb
, dev
, addr
);
2490 err
= ndo_dflt_fdb_del(ndm
, tb
, dev
, addr
);
2493 rtnl_fdb_notify(dev
, addr
, RTM_DELNEIGH
);
2494 ndm
->ndm_flags
&= ~NTF_SELF
;
2501 static int nlmsg_populate_fdb(struct sk_buff
*skb
,
2502 struct netlink_callback
*cb
,
2503 struct net_device
*dev
,
2505 struct netdev_hw_addr_list
*list
)
2507 struct netdev_hw_addr
*ha
;
2511 portid
= NETLINK_CB(cb
->skb
).portid
;
2512 seq
= cb
->nlh
->nlmsg_seq
;
2514 list_for_each_entry(ha
, &list
->list
, list
) {
2515 if (*idx
< cb
->args
[0])
2518 err
= nlmsg_populate_fdb_fill(skb
, dev
, ha
->addr
,
2520 RTM_NEWNEIGH
, NTF_SELF
,
2531 * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table.
2532 * @nlh: netlink message header
2535 * Default netdevice operation to dump the existing unicast address list.
2536 * Returns number of addresses from list put in skb.
2538 int ndo_dflt_fdb_dump(struct sk_buff
*skb
,
2539 struct netlink_callback
*cb
,
2540 struct net_device
*dev
,
2541 struct net_device
*filter_dev
,
2546 netif_addr_lock_bh(dev
);
2547 err
= nlmsg_populate_fdb(skb
, cb
, dev
, &idx
, &dev
->uc
);
2550 nlmsg_populate_fdb(skb
, cb
, dev
, &idx
, &dev
->mc
);
2552 netif_addr_unlock_bh(dev
);
2555 EXPORT_SYMBOL(ndo_dflt_fdb_dump
);
2557 static int rtnl_fdb_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2559 struct net_device
*dev
;
2560 struct nlattr
*tb
[IFLA_MAX
+1];
2561 struct net_device
*bdev
= NULL
;
2562 struct net_device
*br_dev
= NULL
;
2563 const struct net_device_ops
*ops
= NULL
;
2564 const struct net_device_ops
*cops
= NULL
;
2565 struct ifinfomsg
*ifm
= nlmsg_data(cb
->nlh
);
2566 struct net
*net
= sock_net(skb
->sk
);
2571 if (nlmsg_parse(cb
->nlh
, sizeof(struct ifinfomsg
), tb
, IFLA_MAX
,
2572 ifla_policy
) == 0) {
2573 if (tb
[IFLA_MASTER
])
2574 br_idx
= nla_get_u32(tb
[IFLA_MASTER
]);
2577 brport_idx
= ifm
->ifi_index
;
2580 br_dev
= __dev_get_by_index(net
, br_idx
);
2584 ops
= br_dev
->netdev_ops
;
2588 for_each_netdev(net
, dev
) {
2589 if (brport_idx
&& (dev
->ifindex
!= brport_idx
))
2592 if (!br_idx
) { /* user did not specify a specific bridge */
2593 if (dev
->priv_flags
& IFF_BRIDGE_PORT
) {
2594 br_dev
= netdev_master_upper_dev_get(dev
);
2595 cops
= br_dev
->netdev_ops
;
2600 if (dev
!= br_dev
&&
2601 !(dev
->priv_flags
& IFF_BRIDGE_PORT
))
2604 if (br_dev
!= netdev_master_upper_dev_get(dev
) &&
2605 !(dev
->priv_flags
& IFF_EBRIDGE
))
2612 if (dev
->priv_flags
& IFF_BRIDGE_PORT
) {
2613 if (cops
&& cops
->ndo_fdb_dump
)
2614 idx
= cops
->ndo_fdb_dump(skb
, cb
, br_dev
, dev
,
2618 idx
= ndo_dflt_fdb_dump(skb
, cb
, dev
, NULL
, idx
);
2619 if (dev
->netdev_ops
->ndo_fdb_dump
)
2620 idx
= dev
->netdev_ops
->ndo_fdb_dump(skb
, cb
, bdev
, dev
,
2630 int ndo_dflt_bridge_getlink(struct sk_buff
*skb
, u32 pid
, u32 seq
,
2631 struct net_device
*dev
, u16 mode
)
2633 struct nlmsghdr
*nlh
;
2634 struct ifinfomsg
*ifm
;
2635 struct nlattr
*br_afspec
;
2636 u8 operstate
= netif_running(dev
) ? dev
->operstate
: IF_OPER_DOWN
;
2637 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2639 nlh
= nlmsg_put(skb
, pid
, seq
, RTM_NEWLINK
, sizeof(*ifm
), NLM_F_MULTI
);
2643 ifm
= nlmsg_data(nlh
);
2644 ifm
->ifi_family
= AF_BRIDGE
;
2646 ifm
->ifi_type
= dev
->type
;
2647 ifm
->ifi_index
= dev
->ifindex
;
2648 ifm
->ifi_flags
= dev_get_flags(dev
);
2649 ifm
->ifi_change
= 0;
2652 if (nla_put_string(skb
, IFLA_IFNAME
, dev
->name
) ||
2653 nla_put_u32(skb
, IFLA_MTU
, dev
->mtu
) ||
2654 nla_put_u8(skb
, IFLA_OPERSTATE
, operstate
) ||
2656 nla_put_u32(skb
, IFLA_MASTER
, br_dev
->ifindex
)) ||
2658 nla_put(skb
, IFLA_ADDRESS
, dev
->addr_len
, dev
->dev_addr
)) ||
2659 (dev
->ifindex
!= dev
->iflink
&&
2660 nla_put_u32(skb
, IFLA_LINK
, dev
->iflink
)))
2661 goto nla_put_failure
;
2663 br_afspec
= nla_nest_start(skb
, IFLA_AF_SPEC
);
2665 goto nla_put_failure
;
2667 if (nla_put_u16(skb
, IFLA_BRIDGE_FLAGS
, BRIDGE_FLAGS_SELF
) ||
2668 nla_put_u16(skb
, IFLA_BRIDGE_MODE
, mode
)) {
2669 nla_nest_cancel(skb
, br_afspec
);
2670 goto nla_put_failure
;
2672 nla_nest_end(skb
, br_afspec
);
2674 return nlmsg_end(skb
, nlh
);
2676 nlmsg_cancel(skb
, nlh
);
2679 EXPORT_SYMBOL(ndo_dflt_bridge_getlink
);
2681 static int rtnl_bridge_getlink(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2683 struct net
*net
= sock_net(skb
->sk
);
2684 struct net_device
*dev
;
2686 u32 portid
= NETLINK_CB(cb
->skb
).portid
;
2687 u32 seq
= cb
->nlh
->nlmsg_seq
;
2688 struct nlattr
*extfilt
;
2689 u32 filter_mask
= 0;
2691 extfilt
= nlmsg_find_attr(cb
->nlh
, sizeof(struct ifinfomsg
),
2694 filter_mask
= nla_get_u32(extfilt
);
2697 for_each_netdev_rcu(net
, dev
) {
2698 const struct net_device_ops
*ops
= dev
->netdev_ops
;
2699 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2701 if (br_dev
&& br_dev
->netdev_ops
->ndo_bridge_getlink
) {
2702 if (idx
>= cb
->args
[0] &&
2703 br_dev
->netdev_ops
->ndo_bridge_getlink(
2704 skb
, portid
, seq
, dev
, filter_mask
) < 0)
2709 if (ops
->ndo_bridge_getlink
) {
2710 if (idx
>= cb
->args
[0] &&
2711 ops
->ndo_bridge_getlink(skb
, portid
, seq
, dev
,
2723 static inline size_t bridge_nlmsg_size(void)
2725 return NLMSG_ALIGN(sizeof(struct ifinfomsg
))
2726 + nla_total_size(IFNAMSIZ
) /* IFLA_IFNAME */
2727 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_ADDRESS */
2728 + nla_total_size(sizeof(u32
)) /* IFLA_MASTER */
2729 + nla_total_size(sizeof(u32
)) /* IFLA_MTU */
2730 + nla_total_size(sizeof(u32
)) /* IFLA_LINK */
2731 + nla_total_size(sizeof(u32
)) /* IFLA_OPERSTATE */
2732 + nla_total_size(sizeof(u8
)) /* IFLA_PROTINFO */
2733 + nla_total_size(sizeof(struct nlattr
)) /* IFLA_AF_SPEC */
2734 + nla_total_size(sizeof(u16
)) /* IFLA_BRIDGE_FLAGS */
2735 + nla_total_size(sizeof(u16
)); /* IFLA_BRIDGE_MODE */
2738 static int rtnl_bridge_notify(struct net_device
*dev
, u16 flags
)
2740 struct net
*net
= dev_net(dev
);
2741 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2742 struct sk_buff
*skb
;
2743 int err
= -EOPNOTSUPP
;
2745 skb
= nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC
);
2751 if ((!flags
|| (flags
& BRIDGE_FLAGS_MASTER
)) &&
2752 br_dev
&& br_dev
->netdev_ops
->ndo_bridge_getlink
) {
2753 err
= br_dev
->netdev_ops
->ndo_bridge_getlink(skb
, 0, 0, dev
, 0);
2758 if ((flags
& BRIDGE_FLAGS_SELF
) &&
2759 dev
->netdev_ops
->ndo_bridge_getlink
) {
2760 err
= dev
->netdev_ops
->ndo_bridge_getlink(skb
, 0, 0, dev
, 0);
2765 rtnl_notify(skb
, net
, 0, RTNLGRP_LINK
, NULL
, GFP_ATOMIC
);
2768 WARN_ON(err
== -EMSGSIZE
);
2770 rtnl_set_sk_err(net
, RTNLGRP_LINK
, err
);
2774 static int rtnl_bridge_setlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2776 struct net
*net
= sock_net(skb
->sk
);
2777 struct ifinfomsg
*ifm
;
2778 struct net_device
*dev
;
2779 struct nlattr
*br_spec
, *attr
= NULL
;
2780 int rem
, err
= -EOPNOTSUPP
;
2781 u16 oflags
, flags
= 0;
2782 bool have_flags
= false;
2784 if (nlmsg_len(nlh
) < sizeof(*ifm
))
2787 ifm
= nlmsg_data(nlh
);
2788 if (ifm
->ifi_family
!= AF_BRIDGE
)
2789 return -EPFNOSUPPORT
;
2791 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2793 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
2797 br_spec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
2799 nla_for_each_nested(attr
, br_spec
, rem
) {
2800 if (nla_type(attr
) == IFLA_BRIDGE_FLAGS
) {
2802 flags
= nla_get_u16(attr
);
2810 if (!flags
|| (flags
& BRIDGE_FLAGS_MASTER
)) {
2811 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2813 if (!br_dev
|| !br_dev
->netdev_ops
->ndo_bridge_setlink
) {
2818 err
= br_dev
->netdev_ops
->ndo_bridge_setlink(dev
, nlh
);
2822 flags
&= ~BRIDGE_FLAGS_MASTER
;
2825 if ((flags
& BRIDGE_FLAGS_SELF
)) {
2826 if (!dev
->netdev_ops
->ndo_bridge_setlink
)
2829 err
= dev
->netdev_ops
->ndo_bridge_setlink(dev
, nlh
);
2832 flags
&= ~BRIDGE_FLAGS_SELF
;
2836 memcpy(nla_data(attr
), &flags
, sizeof(flags
));
2837 /* Generate event to notify upper layer of bridge change */
2839 err
= rtnl_bridge_notify(dev
, oflags
);
2844 static int rtnl_bridge_dellink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2846 struct net
*net
= sock_net(skb
->sk
);
2847 struct ifinfomsg
*ifm
;
2848 struct net_device
*dev
;
2849 struct nlattr
*br_spec
, *attr
= NULL
;
2850 int rem
, err
= -EOPNOTSUPP
;
2851 u16 oflags
, flags
= 0;
2852 bool have_flags
= false;
2854 if (nlmsg_len(nlh
) < sizeof(*ifm
))
2857 ifm
= nlmsg_data(nlh
);
2858 if (ifm
->ifi_family
!= AF_BRIDGE
)
2859 return -EPFNOSUPPORT
;
2861 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2863 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
2867 br_spec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
2869 nla_for_each_nested(attr
, br_spec
, rem
) {
2870 if (nla_type(attr
) == IFLA_BRIDGE_FLAGS
) {
2872 flags
= nla_get_u16(attr
);
2880 if (!flags
|| (flags
& BRIDGE_FLAGS_MASTER
)) {
2881 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2883 if (!br_dev
|| !br_dev
->netdev_ops
->ndo_bridge_dellink
) {
2888 err
= br_dev
->netdev_ops
->ndo_bridge_dellink(dev
, nlh
);
2892 flags
&= ~BRIDGE_FLAGS_MASTER
;
2895 if ((flags
& BRIDGE_FLAGS_SELF
)) {
2896 if (!dev
->netdev_ops
->ndo_bridge_dellink
)
2899 err
= dev
->netdev_ops
->ndo_bridge_dellink(dev
, nlh
);
2902 flags
&= ~BRIDGE_FLAGS_SELF
;
2906 memcpy(nla_data(attr
), &flags
, sizeof(flags
));
2907 /* Generate event to notify upper layer of bridge change */
2909 err
= rtnl_bridge_notify(dev
, oflags
);
2914 /* Process one rtnetlink message. */
2916 static int rtnetlink_rcv_msg(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2918 struct net
*net
= sock_net(skb
->sk
);
2919 rtnl_doit_func doit
;
2925 type
= nlh
->nlmsg_type
;
2931 /* All the messages must have at least 1 byte length */
2932 if (nlmsg_len(nlh
) < sizeof(struct rtgenmsg
))
2935 family
= ((struct rtgenmsg
*)nlmsg_data(nlh
))->rtgen_family
;
2939 if (kind
!= 2 && !netlink_net_capable(skb
, CAP_NET_ADMIN
))
2942 if (kind
== 2 && nlh
->nlmsg_flags
&NLM_F_DUMP
) {
2944 rtnl_dumpit_func dumpit
;
2945 rtnl_calcit_func calcit
;
2946 u16 min_dump_alloc
= 0;
2948 dumpit
= rtnl_get_dumpit(family
, type
);
2951 calcit
= rtnl_get_calcit(family
, type
);
2953 min_dump_alloc
= calcit(skb
, nlh
);
2958 struct netlink_dump_control c
= {
2960 .min_dump_alloc
= min_dump_alloc
,
2962 err
= netlink_dump_start(rtnl
, skb
, nlh
, &c
);
2968 doit
= rtnl_get_doit(family
, type
);
2972 return doit(skb
, nlh
);
2975 static void rtnetlink_rcv(struct sk_buff
*skb
)
2978 netlink_rcv_skb(skb
, &rtnetlink_rcv_msg
);
2982 static int rtnetlink_event(struct notifier_block
*this, unsigned long event
, void *ptr
)
2984 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
2990 case NETDEV_POST_INIT
:
2991 case NETDEV_REGISTER
:
2993 case NETDEV_PRE_TYPE_CHANGE
:
2994 case NETDEV_GOING_DOWN
:
2995 case NETDEV_UNREGISTER
:
2996 case NETDEV_UNREGISTER_FINAL
:
2997 case NETDEV_RELEASE
:
3001 rtmsg_ifinfo(RTM_NEWLINK
, dev
, 0, GFP_KERNEL
);
3007 static struct notifier_block rtnetlink_dev_notifier
= {
3008 .notifier_call
= rtnetlink_event
,
3012 static int __net_init
rtnetlink_net_init(struct net
*net
)
3015 struct netlink_kernel_cfg cfg
= {
3016 .groups
= RTNLGRP_MAX
,
3017 .input
= rtnetlink_rcv
,
3018 .cb_mutex
= &rtnl_mutex
,
3019 .flags
= NL_CFG_F_NONROOT_RECV
,
3022 sk
= netlink_kernel_create(net
, NETLINK_ROUTE
, &cfg
);
3029 static void __net_exit
rtnetlink_net_exit(struct net
*net
)
3031 netlink_kernel_release(net
->rtnl
);
3035 static struct pernet_operations rtnetlink_net_ops
= {
3036 .init
= rtnetlink_net_init
,
3037 .exit
= rtnetlink_net_exit
,
3040 void __init
rtnetlink_init(void)
3042 if (register_pernet_subsys(&rtnetlink_net_ops
))
3043 panic("rtnetlink_init: cannot initialize rtnetlink\n");
3045 register_netdevice_notifier(&rtnetlink_dev_notifier
);
3047 rtnl_register(PF_UNSPEC
, RTM_GETLINK
, rtnl_getlink
,
3048 rtnl_dump_ifinfo
, rtnl_calcit
);
3049 rtnl_register(PF_UNSPEC
, RTM_SETLINK
, rtnl_setlink
, NULL
, NULL
);
3050 rtnl_register(PF_UNSPEC
, RTM_NEWLINK
, rtnl_newlink
, NULL
, NULL
);
3051 rtnl_register(PF_UNSPEC
, RTM_DELLINK
, rtnl_dellink
, NULL
, NULL
);
3053 rtnl_register(PF_UNSPEC
, RTM_GETADDR
, NULL
, rtnl_dump_all
, NULL
);
3054 rtnl_register(PF_UNSPEC
, RTM_GETROUTE
, NULL
, rtnl_dump_all
, NULL
);
3056 rtnl_register(PF_BRIDGE
, RTM_NEWNEIGH
, rtnl_fdb_add
, NULL
, NULL
);
3057 rtnl_register(PF_BRIDGE
, RTM_DELNEIGH
, rtnl_fdb_del
, NULL
, NULL
);
3058 rtnl_register(PF_BRIDGE
, RTM_GETNEIGH
, NULL
, rtnl_fdb_dump
, NULL
);
3060 rtnl_register(PF_BRIDGE
, RTM_GETLINK
, NULL
, rtnl_bridge_getlink
, NULL
);
3061 rtnl_register(PF_BRIDGE
, RTM_DELLINK
, rtnl_bridge_dellink
, NULL
, NULL
);
3062 rtnl_register(PF_BRIDGE
, RTM_SETLINK
, rtnl_bridge_setlink
, NULL
, NULL
);