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>
47 #include <net/switchdev.h>
49 #include <net/protocol.h>
51 #include <net/route.h>
55 #include <net/pkt_sched.h>
56 #include <net/fib_rules.h>
57 #include <net/rtnetlink.h>
58 #include <net/net_namespace.h>
62 rtnl_dumpit_func dumpit
;
63 rtnl_calcit_func calcit
;
66 static DEFINE_MUTEX(rtnl_mutex
);
70 mutex_lock(&rtnl_mutex
);
72 EXPORT_SYMBOL(rtnl_lock
);
74 void __rtnl_unlock(void)
76 mutex_unlock(&rtnl_mutex
);
79 void rtnl_unlock(void)
81 /* This fellow will unlock it for us. */
84 EXPORT_SYMBOL(rtnl_unlock
);
86 int rtnl_trylock(void)
88 return mutex_trylock(&rtnl_mutex
);
90 EXPORT_SYMBOL(rtnl_trylock
);
92 int rtnl_is_locked(void)
94 return mutex_is_locked(&rtnl_mutex
);
96 EXPORT_SYMBOL(rtnl_is_locked
);
98 #ifdef CONFIG_PROVE_LOCKING
99 int lockdep_rtnl_is_held(void)
101 return lockdep_is_held(&rtnl_mutex
);
103 EXPORT_SYMBOL(lockdep_rtnl_is_held
);
104 #endif /* #ifdef CONFIG_PROVE_LOCKING */
106 static struct rtnl_link
*rtnl_msg_handlers
[RTNL_FAMILY_MAX
+ 1];
108 static inline int rtm_msgindex(int msgtype
)
110 int msgindex
= msgtype
- RTM_BASE
;
113 * msgindex < 0 implies someone tried to register a netlink
114 * control code. msgindex >= RTM_NR_MSGTYPES may indicate that
115 * the message type has not been added to linux/rtnetlink.h
117 BUG_ON(msgindex
< 0 || msgindex
>= RTM_NR_MSGTYPES
);
122 static rtnl_doit_func
rtnl_get_doit(int protocol
, int msgindex
)
124 struct rtnl_link
*tab
;
126 if (protocol
<= RTNL_FAMILY_MAX
)
127 tab
= rtnl_msg_handlers
[protocol
];
131 if (tab
== NULL
|| tab
[msgindex
].doit
== NULL
)
132 tab
= rtnl_msg_handlers
[PF_UNSPEC
];
134 return tab
[msgindex
].doit
;
137 static rtnl_dumpit_func
rtnl_get_dumpit(int protocol
, int msgindex
)
139 struct rtnl_link
*tab
;
141 if (protocol
<= RTNL_FAMILY_MAX
)
142 tab
= rtnl_msg_handlers
[protocol
];
146 if (tab
== NULL
|| tab
[msgindex
].dumpit
== NULL
)
147 tab
= rtnl_msg_handlers
[PF_UNSPEC
];
149 return tab
[msgindex
].dumpit
;
152 static rtnl_calcit_func
rtnl_get_calcit(int protocol
, int msgindex
)
154 struct rtnl_link
*tab
;
156 if (protocol
<= RTNL_FAMILY_MAX
)
157 tab
= rtnl_msg_handlers
[protocol
];
161 if (tab
== NULL
|| tab
[msgindex
].calcit
== NULL
)
162 tab
= rtnl_msg_handlers
[PF_UNSPEC
];
164 return tab
[msgindex
].calcit
;
168 * __rtnl_register - Register a rtnetlink message type
169 * @protocol: Protocol family or PF_UNSPEC
170 * @msgtype: rtnetlink message type
171 * @doit: Function pointer called for each request message
172 * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message
173 * @calcit: Function pointer to calc size of dump message
175 * Registers the specified function pointers (at least one of them has
176 * to be non-NULL) to be called whenever a request message for the
177 * specified protocol family and message type is received.
179 * The special protocol family PF_UNSPEC may be used to define fallback
180 * function pointers for the case when no entry for the specific protocol
183 * Returns 0 on success or a negative error code.
185 int __rtnl_register(int protocol
, int msgtype
,
186 rtnl_doit_func doit
, rtnl_dumpit_func dumpit
,
187 rtnl_calcit_func calcit
)
189 struct rtnl_link
*tab
;
192 BUG_ON(protocol
< 0 || protocol
> RTNL_FAMILY_MAX
);
193 msgindex
= rtm_msgindex(msgtype
);
195 tab
= rtnl_msg_handlers
[protocol
];
197 tab
= kcalloc(RTM_NR_MSGTYPES
, sizeof(*tab
), GFP_KERNEL
);
201 rtnl_msg_handlers
[protocol
] = tab
;
205 tab
[msgindex
].doit
= doit
;
208 tab
[msgindex
].dumpit
= dumpit
;
211 tab
[msgindex
].calcit
= calcit
;
215 EXPORT_SYMBOL_GPL(__rtnl_register
);
218 * rtnl_register - Register a rtnetlink message type
220 * Identical to __rtnl_register() but panics on failure. This is useful
221 * as failure of this function is very unlikely, it can only happen due
222 * to lack of memory when allocating the chain to store all message
223 * handlers for a protocol. Meant for use in init functions where lack
224 * of memory implies no sense in continuing.
226 void rtnl_register(int protocol
, int msgtype
,
227 rtnl_doit_func doit
, rtnl_dumpit_func dumpit
,
228 rtnl_calcit_func calcit
)
230 if (__rtnl_register(protocol
, msgtype
, doit
, dumpit
, calcit
) < 0)
231 panic("Unable to register rtnetlink message handler, "
232 "protocol = %d, message type = %d\n",
235 EXPORT_SYMBOL_GPL(rtnl_register
);
238 * rtnl_unregister - Unregister a rtnetlink message type
239 * @protocol: Protocol family or PF_UNSPEC
240 * @msgtype: rtnetlink message type
242 * Returns 0 on success or a negative error code.
244 int rtnl_unregister(int protocol
, int msgtype
)
248 BUG_ON(protocol
< 0 || protocol
> RTNL_FAMILY_MAX
);
249 msgindex
= rtm_msgindex(msgtype
);
251 if (rtnl_msg_handlers
[protocol
] == NULL
)
254 rtnl_msg_handlers
[protocol
][msgindex
].doit
= NULL
;
255 rtnl_msg_handlers
[protocol
][msgindex
].dumpit
= NULL
;
259 EXPORT_SYMBOL_GPL(rtnl_unregister
);
262 * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol
263 * @protocol : Protocol family or PF_UNSPEC
265 * Identical to calling rtnl_unregster() for all registered message types
266 * of a certain protocol family.
268 void rtnl_unregister_all(int protocol
)
270 BUG_ON(protocol
< 0 || protocol
> RTNL_FAMILY_MAX
);
272 kfree(rtnl_msg_handlers
[protocol
]);
273 rtnl_msg_handlers
[protocol
] = NULL
;
275 EXPORT_SYMBOL_GPL(rtnl_unregister_all
);
277 static LIST_HEAD(link_ops
);
279 static const struct rtnl_link_ops
*rtnl_link_ops_get(const char *kind
)
281 const struct rtnl_link_ops
*ops
;
283 list_for_each_entry(ops
, &link_ops
, list
) {
284 if (!strcmp(ops
->kind
, kind
))
291 * __rtnl_link_register - Register rtnl_link_ops with rtnetlink.
292 * @ops: struct rtnl_link_ops * to register
294 * The caller must hold the rtnl_mutex. This function should be used
295 * by drivers that create devices during module initialization. It
296 * must be called before registering the devices.
298 * Returns 0 on success or a negative error code.
300 int __rtnl_link_register(struct rtnl_link_ops
*ops
)
302 if (rtnl_link_ops_get(ops
->kind
))
305 /* The check for setup is here because if ops
306 * does not have that filled up, it is not possible
307 * to use the ops for creating device. So do not
308 * fill up dellink as well. That disables rtnl_dellink.
310 if (ops
->setup
&& !ops
->dellink
)
311 ops
->dellink
= unregister_netdevice_queue
;
313 list_add_tail(&ops
->list
, &link_ops
);
316 EXPORT_SYMBOL_GPL(__rtnl_link_register
);
319 * rtnl_link_register - Register rtnl_link_ops with rtnetlink.
320 * @ops: struct rtnl_link_ops * to register
322 * Returns 0 on success or a negative error code.
324 int rtnl_link_register(struct rtnl_link_ops
*ops
)
329 err
= __rtnl_link_register(ops
);
333 EXPORT_SYMBOL_GPL(rtnl_link_register
);
335 static void __rtnl_kill_links(struct net
*net
, struct rtnl_link_ops
*ops
)
337 struct net_device
*dev
;
338 LIST_HEAD(list_kill
);
340 for_each_netdev(net
, dev
) {
341 if (dev
->rtnl_link_ops
== ops
)
342 ops
->dellink(dev
, &list_kill
);
344 unregister_netdevice_many(&list_kill
);
348 * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
349 * @ops: struct rtnl_link_ops * to unregister
351 * The caller must hold the rtnl_mutex.
353 void __rtnl_link_unregister(struct rtnl_link_ops
*ops
)
358 __rtnl_kill_links(net
, ops
);
360 list_del(&ops
->list
);
362 EXPORT_SYMBOL_GPL(__rtnl_link_unregister
);
364 /* Return with the rtnl_lock held when there are no network
365 * devices unregistering in any network namespace.
367 static void rtnl_lock_unregistering_all(void)
371 DEFINE_WAIT_FUNC(wait
, woken_wake_function
);
373 add_wait_queue(&netdev_unregistering_wq
, &wait
);
375 unregistering
= false;
378 if (net
->dev_unreg_count
> 0) {
379 unregistering
= true;
387 wait_woken(&wait
, TASK_UNINTERRUPTIBLE
, MAX_SCHEDULE_TIMEOUT
);
389 remove_wait_queue(&netdev_unregistering_wq
, &wait
);
393 * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
394 * @ops: struct rtnl_link_ops * to unregister
396 void rtnl_link_unregister(struct rtnl_link_ops
*ops
)
398 /* Close the race with cleanup_net() */
399 mutex_lock(&net_mutex
);
400 rtnl_lock_unregistering_all();
401 __rtnl_link_unregister(ops
);
403 mutex_unlock(&net_mutex
);
405 EXPORT_SYMBOL_GPL(rtnl_link_unregister
);
407 static size_t rtnl_link_get_slave_info_data_size(const struct net_device
*dev
)
409 struct net_device
*master_dev
;
410 const struct rtnl_link_ops
*ops
;
412 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
415 ops
= master_dev
->rtnl_link_ops
;
416 if (!ops
|| !ops
->get_slave_size
)
418 /* IFLA_INFO_SLAVE_DATA + nested data */
419 return nla_total_size(sizeof(struct nlattr
)) +
420 ops
->get_slave_size(master_dev
, dev
);
423 static size_t rtnl_link_get_size(const struct net_device
*dev
)
425 const struct rtnl_link_ops
*ops
= dev
->rtnl_link_ops
;
431 size
= nla_total_size(sizeof(struct nlattr
)) + /* IFLA_LINKINFO */
432 nla_total_size(strlen(ops
->kind
) + 1); /* IFLA_INFO_KIND */
435 /* IFLA_INFO_DATA + nested data */
436 size
+= nla_total_size(sizeof(struct nlattr
)) +
439 if (ops
->get_xstats_size
)
440 /* IFLA_INFO_XSTATS */
441 size
+= nla_total_size(ops
->get_xstats_size(dev
));
443 size
+= rtnl_link_get_slave_info_data_size(dev
);
448 static LIST_HEAD(rtnl_af_ops
);
450 static const struct rtnl_af_ops
*rtnl_af_lookup(const int family
)
452 const struct rtnl_af_ops
*ops
;
454 list_for_each_entry(ops
, &rtnl_af_ops
, list
) {
455 if (ops
->family
== family
)
463 * rtnl_af_register - Register rtnl_af_ops with rtnetlink.
464 * @ops: struct rtnl_af_ops * to register
466 * Returns 0 on success or a negative error code.
468 void rtnl_af_register(struct rtnl_af_ops
*ops
)
471 list_add_tail(&ops
->list
, &rtnl_af_ops
);
474 EXPORT_SYMBOL_GPL(rtnl_af_register
);
477 * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
478 * @ops: struct rtnl_af_ops * to unregister
480 * The caller must hold the rtnl_mutex.
482 void __rtnl_af_unregister(struct rtnl_af_ops
*ops
)
484 list_del(&ops
->list
);
486 EXPORT_SYMBOL_GPL(__rtnl_af_unregister
);
489 * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
490 * @ops: struct rtnl_af_ops * to unregister
492 void rtnl_af_unregister(struct rtnl_af_ops
*ops
)
495 __rtnl_af_unregister(ops
);
498 EXPORT_SYMBOL_GPL(rtnl_af_unregister
);
500 static size_t rtnl_link_get_af_size(const struct net_device
*dev
)
502 struct rtnl_af_ops
*af_ops
;
506 size
= nla_total_size(sizeof(struct nlattr
));
508 list_for_each_entry(af_ops
, &rtnl_af_ops
, list
) {
509 if (af_ops
->get_link_af_size
) {
510 /* AF_* + nested data */
511 size
+= nla_total_size(sizeof(struct nlattr
)) +
512 af_ops
->get_link_af_size(dev
);
519 static bool rtnl_have_link_slave_info(const struct net_device
*dev
)
521 struct net_device
*master_dev
;
523 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
524 if (master_dev
&& master_dev
->rtnl_link_ops
)
529 static int rtnl_link_slave_info_fill(struct sk_buff
*skb
,
530 const struct net_device
*dev
)
532 struct net_device
*master_dev
;
533 const struct rtnl_link_ops
*ops
;
534 struct nlattr
*slave_data
;
537 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
540 ops
= master_dev
->rtnl_link_ops
;
543 if (nla_put_string(skb
, IFLA_INFO_SLAVE_KIND
, ops
->kind
) < 0)
545 if (ops
->fill_slave_info
) {
546 slave_data
= nla_nest_start(skb
, IFLA_INFO_SLAVE_DATA
);
549 err
= ops
->fill_slave_info(skb
, master_dev
, dev
);
551 goto err_cancel_slave_data
;
552 nla_nest_end(skb
, slave_data
);
556 err_cancel_slave_data
:
557 nla_nest_cancel(skb
, slave_data
);
561 static int rtnl_link_info_fill(struct sk_buff
*skb
,
562 const struct net_device
*dev
)
564 const struct rtnl_link_ops
*ops
= dev
->rtnl_link_ops
;
570 if (nla_put_string(skb
, IFLA_INFO_KIND
, ops
->kind
) < 0)
572 if (ops
->fill_xstats
) {
573 err
= ops
->fill_xstats(skb
, dev
);
577 if (ops
->fill_info
) {
578 data
= nla_nest_start(skb
, IFLA_INFO_DATA
);
581 err
= ops
->fill_info(skb
, dev
);
583 goto err_cancel_data
;
584 nla_nest_end(skb
, data
);
589 nla_nest_cancel(skb
, data
);
593 static int rtnl_link_fill(struct sk_buff
*skb
, const struct net_device
*dev
)
595 struct nlattr
*linkinfo
;
598 linkinfo
= nla_nest_start(skb
, IFLA_LINKINFO
);
599 if (linkinfo
== NULL
)
602 err
= rtnl_link_info_fill(skb
, dev
);
604 goto err_cancel_link
;
606 err
= rtnl_link_slave_info_fill(skb
, dev
);
608 goto err_cancel_link
;
610 nla_nest_end(skb
, linkinfo
);
614 nla_nest_cancel(skb
, linkinfo
);
619 int rtnetlink_send(struct sk_buff
*skb
, struct net
*net
, u32 pid
, unsigned int group
, int echo
)
621 struct sock
*rtnl
= net
->rtnl
;
624 NETLINK_CB(skb
).dst_group
= group
;
626 atomic_inc(&skb
->users
);
627 netlink_broadcast(rtnl
, skb
, pid
, group
, GFP_KERNEL
);
629 err
= netlink_unicast(rtnl
, skb
, pid
, MSG_DONTWAIT
);
633 int rtnl_unicast(struct sk_buff
*skb
, struct net
*net
, u32 pid
)
635 struct sock
*rtnl
= net
->rtnl
;
637 return nlmsg_unicast(rtnl
, skb
, pid
);
639 EXPORT_SYMBOL(rtnl_unicast
);
641 void rtnl_notify(struct sk_buff
*skb
, struct net
*net
, u32 pid
, u32 group
,
642 struct nlmsghdr
*nlh
, gfp_t flags
)
644 struct sock
*rtnl
= net
->rtnl
;
648 report
= nlmsg_report(nlh
);
650 nlmsg_notify(rtnl
, skb
, pid
, group
, report
, flags
);
652 EXPORT_SYMBOL(rtnl_notify
);
654 void rtnl_set_sk_err(struct net
*net
, u32 group
, int error
)
656 struct sock
*rtnl
= net
->rtnl
;
658 netlink_set_err(rtnl
, 0, group
, error
);
660 EXPORT_SYMBOL(rtnl_set_sk_err
);
662 int rtnetlink_put_metrics(struct sk_buff
*skb
, u32
*metrics
)
667 mx
= nla_nest_start(skb
, RTA_METRICS
);
671 for (i
= 0; i
< RTAX_MAX
; i
++) {
673 if (i
== RTAX_CC_ALGO
- 1) {
674 char tmp
[TCP_CA_NAME_MAX
], *name
;
676 name
= tcp_ca_get_name_by_key(metrics
[i
], tmp
);
679 if (nla_put_string(skb
, i
+ 1, name
))
680 goto nla_put_failure
;
681 } else if (i
== RTAX_FEATURES
- 1) {
682 u32 user_features
= metrics
[i
] & RTAX_FEATURE_MASK
;
684 BUILD_BUG_ON(RTAX_FEATURE_MASK
& DST_FEATURE_MASK
);
685 if (nla_put_u32(skb
, i
+ 1, user_features
))
686 goto nla_put_failure
;
688 if (nla_put_u32(skb
, i
+ 1, metrics
[i
]))
689 goto nla_put_failure
;
696 nla_nest_cancel(skb
, mx
);
700 return nla_nest_end(skb
, mx
);
703 nla_nest_cancel(skb
, mx
);
706 EXPORT_SYMBOL(rtnetlink_put_metrics
);
708 int rtnl_put_cacheinfo(struct sk_buff
*skb
, struct dst_entry
*dst
, u32 id
,
709 long expires
, u32 error
)
711 struct rta_cacheinfo ci
= {
712 .rta_lastuse
= jiffies_delta_to_clock_t(jiffies
- dst
->lastuse
),
713 .rta_used
= dst
->__use
,
714 .rta_clntref
= atomic_read(&(dst
->__refcnt
)),
722 clock
= jiffies_to_clock_t(abs(expires
));
723 clock
= min_t(unsigned long, clock
, INT_MAX
);
724 ci
.rta_expires
= (expires
> 0) ? clock
: -clock
;
726 return nla_put(skb
, RTA_CACHEINFO
, sizeof(ci
), &ci
);
728 EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo
);
730 static void set_operstate(struct net_device
*dev
, unsigned char transition
)
732 unsigned char operstate
= dev
->operstate
;
734 switch (transition
) {
736 if ((operstate
== IF_OPER_DORMANT
||
737 operstate
== IF_OPER_UNKNOWN
) &&
739 operstate
= IF_OPER_UP
;
742 case IF_OPER_DORMANT
:
743 if (operstate
== IF_OPER_UP
||
744 operstate
== IF_OPER_UNKNOWN
)
745 operstate
= IF_OPER_DORMANT
;
749 if (dev
->operstate
!= operstate
) {
750 write_lock_bh(&dev_base_lock
);
751 dev
->operstate
= operstate
;
752 write_unlock_bh(&dev_base_lock
);
753 netdev_state_change(dev
);
757 static unsigned int rtnl_dev_get_flags(const struct net_device
*dev
)
759 return (dev
->flags
& ~(IFF_PROMISC
| IFF_ALLMULTI
)) |
760 (dev
->gflags
& (IFF_PROMISC
| IFF_ALLMULTI
));
763 static unsigned int rtnl_dev_combine_flags(const struct net_device
*dev
,
764 const struct ifinfomsg
*ifm
)
766 unsigned int flags
= ifm
->ifi_flags
;
768 /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
770 flags
= (flags
& ifm
->ifi_change
) |
771 (rtnl_dev_get_flags(dev
) & ~ifm
->ifi_change
);
776 static void copy_rtnl_link_stats(struct rtnl_link_stats
*a
,
777 const struct rtnl_link_stats64
*b
)
779 a
->rx_packets
= b
->rx_packets
;
780 a
->tx_packets
= b
->tx_packets
;
781 a
->rx_bytes
= b
->rx_bytes
;
782 a
->tx_bytes
= b
->tx_bytes
;
783 a
->rx_errors
= b
->rx_errors
;
784 a
->tx_errors
= b
->tx_errors
;
785 a
->rx_dropped
= b
->rx_dropped
;
786 a
->tx_dropped
= b
->tx_dropped
;
788 a
->multicast
= b
->multicast
;
789 a
->collisions
= b
->collisions
;
791 a
->rx_length_errors
= b
->rx_length_errors
;
792 a
->rx_over_errors
= b
->rx_over_errors
;
793 a
->rx_crc_errors
= b
->rx_crc_errors
;
794 a
->rx_frame_errors
= b
->rx_frame_errors
;
795 a
->rx_fifo_errors
= b
->rx_fifo_errors
;
796 a
->rx_missed_errors
= b
->rx_missed_errors
;
798 a
->tx_aborted_errors
= b
->tx_aborted_errors
;
799 a
->tx_carrier_errors
= b
->tx_carrier_errors
;
800 a
->tx_fifo_errors
= b
->tx_fifo_errors
;
801 a
->tx_heartbeat_errors
= b
->tx_heartbeat_errors
;
802 a
->tx_window_errors
= b
->tx_window_errors
;
804 a
->rx_compressed
= b
->rx_compressed
;
805 a
->tx_compressed
= b
->tx_compressed
;
808 static void copy_rtnl_link_stats64(void *v
, const struct rtnl_link_stats64
*b
)
810 memcpy(v
, b
, sizeof(*b
));
814 static inline int rtnl_vfinfo_size(const struct net_device
*dev
,
817 if (dev
->dev
.parent
&& dev_is_pci(dev
->dev
.parent
) &&
818 (ext_filter_mask
& RTEXT_FILTER_VF
)) {
819 int num_vfs
= dev_num_vf(dev
->dev
.parent
);
820 size_t size
= nla_total_size(sizeof(struct nlattr
));
821 size
+= nla_total_size(num_vfs
* sizeof(struct nlattr
));
823 (nla_total_size(sizeof(struct ifla_vf_mac
)) +
824 nla_total_size(sizeof(struct ifla_vf_vlan
)) +
825 nla_total_size(sizeof(struct ifla_vf_spoofchk
)) +
826 nla_total_size(sizeof(struct ifla_vf_rate
)) +
827 nla_total_size(sizeof(struct ifla_vf_link_state
)) +
828 nla_total_size(sizeof(struct ifla_vf_rss_query_en
)) +
829 /* IFLA_VF_STATS_RX_PACKETS */
830 nla_total_size(sizeof(__u64
)) +
831 /* IFLA_VF_STATS_TX_PACKETS */
832 nla_total_size(sizeof(__u64
)) +
833 /* IFLA_VF_STATS_RX_BYTES */
834 nla_total_size(sizeof(__u64
)) +
835 /* IFLA_VF_STATS_TX_BYTES */
836 nla_total_size(sizeof(__u64
)) +
837 /* IFLA_VF_STATS_BROADCAST */
838 nla_total_size(sizeof(__u64
)) +
839 /* IFLA_VF_STATS_MULTICAST */
840 nla_total_size(sizeof(__u64
)));
846 static size_t rtnl_port_size(const struct net_device
*dev
,
849 size_t port_size
= nla_total_size(4) /* PORT_VF */
850 + nla_total_size(PORT_PROFILE_MAX
) /* PORT_PROFILE */
851 + nla_total_size(sizeof(struct ifla_port_vsi
))
853 + nla_total_size(PORT_UUID_MAX
) /* PORT_INSTANCE_UUID */
854 + nla_total_size(PORT_UUID_MAX
) /* PORT_HOST_UUID */
855 + nla_total_size(1) /* PROT_VDP_REQUEST */
856 + nla_total_size(2); /* PORT_VDP_RESPONSE */
857 size_t vf_ports_size
= nla_total_size(sizeof(struct nlattr
));
858 size_t vf_port_size
= nla_total_size(sizeof(struct nlattr
))
860 size_t port_self_size
= nla_total_size(sizeof(struct nlattr
))
863 if (!dev
->netdev_ops
->ndo_get_vf_port
|| !dev
->dev
.parent
||
864 !(ext_filter_mask
& RTEXT_FILTER_VF
))
866 if (dev_num_vf(dev
->dev
.parent
))
867 return port_self_size
+ vf_ports_size
+
868 vf_port_size
* dev_num_vf(dev
->dev
.parent
);
870 return port_self_size
;
873 static noinline
size_t if_nlmsg_size(const struct net_device
*dev
,
876 return NLMSG_ALIGN(sizeof(struct ifinfomsg
))
877 + nla_total_size(IFNAMSIZ
) /* IFLA_IFNAME */
878 + nla_total_size(IFALIASZ
) /* IFLA_IFALIAS */
879 + nla_total_size(IFNAMSIZ
) /* IFLA_QDISC */
880 + nla_total_size(sizeof(struct rtnl_link_ifmap
))
881 + nla_total_size(sizeof(struct rtnl_link_stats
))
882 + nla_total_size(sizeof(struct rtnl_link_stats64
))
883 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_ADDRESS */
884 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_BROADCAST */
885 + nla_total_size(4) /* IFLA_TXQLEN */
886 + nla_total_size(4) /* IFLA_WEIGHT */
887 + nla_total_size(4) /* IFLA_MTU */
888 + nla_total_size(4) /* IFLA_LINK */
889 + nla_total_size(4) /* IFLA_MASTER */
890 + nla_total_size(1) /* IFLA_CARRIER */
891 + nla_total_size(4) /* IFLA_PROMISCUITY */
892 + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */
893 + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */
894 + nla_total_size(1) /* IFLA_OPERSTATE */
895 + nla_total_size(1) /* IFLA_LINKMODE */
896 + nla_total_size(4) /* IFLA_CARRIER_CHANGES */
897 + nla_total_size(4) /* IFLA_LINK_NETNSID */
898 + nla_total_size(ext_filter_mask
899 & RTEXT_FILTER_VF
? 4 : 0) /* IFLA_NUM_VF */
900 + rtnl_vfinfo_size(dev
, ext_filter_mask
) /* IFLA_VFINFO_LIST */
901 + rtnl_port_size(dev
, ext_filter_mask
) /* IFLA_VF_PORTS + IFLA_PORT_SELF */
902 + rtnl_link_get_size(dev
) /* IFLA_LINKINFO */
903 + rtnl_link_get_af_size(dev
) /* IFLA_AF_SPEC */
904 + nla_total_size(MAX_PHYS_ITEM_ID_LEN
) /* IFLA_PHYS_PORT_ID */
905 + nla_total_size(MAX_PHYS_ITEM_ID_LEN
) /* IFLA_PHYS_SWITCH_ID */
906 + nla_total_size(1); /* IFLA_PROTO_DOWN */
910 static int rtnl_vf_ports_fill(struct sk_buff
*skb
, struct net_device
*dev
)
912 struct nlattr
*vf_ports
;
913 struct nlattr
*vf_port
;
917 vf_ports
= nla_nest_start(skb
, IFLA_VF_PORTS
);
921 for (vf
= 0; vf
< dev_num_vf(dev
->dev
.parent
); vf
++) {
922 vf_port
= nla_nest_start(skb
, IFLA_VF_PORT
);
924 goto nla_put_failure
;
925 if (nla_put_u32(skb
, IFLA_PORT_VF
, vf
))
926 goto nla_put_failure
;
927 err
= dev
->netdev_ops
->ndo_get_vf_port(dev
, vf
, skb
);
928 if (err
== -EMSGSIZE
)
929 goto nla_put_failure
;
931 nla_nest_cancel(skb
, vf_port
);
934 nla_nest_end(skb
, vf_port
);
937 nla_nest_end(skb
, vf_ports
);
942 nla_nest_cancel(skb
, vf_ports
);
946 static int rtnl_port_self_fill(struct sk_buff
*skb
, struct net_device
*dev
)
948 struct nlattr
*port_self
;
951 port_self
= nla_nest_start(skb
, IFLA_PORT_SELF
);
955 err
= dev
->netdev_ops
->ndo_get_vf_port(dev
, PORT_SELF_VF
, skb
);
957 nla_nest_cancel(skb
, port_self
);
958 return (err
== -EMSGSIZE
) ? err
: 0;
961 nla_nest_end(skb
, port_self
);
966 static int rtnl_port_fill(struct sk_buff
*skb
, struct net_device
*dev
,
971 if (!dev
->netdev_ops
->ndo_get_vf_port
|| !dev
->dev
.parent
||
972 !(ext_filter_mask
& RTEXT_FILTER_VF
))
975 err
= rtnl_port_self_fill(skb
, dev
);
979 if (dev_num_vf(dev
->dev
.parent
)) {
980 err
= rtnl_vf_ports_fill(skb
, dev
);
988 static int rtnl_phys_port_id_fill(struct sk_buff
*skb
, struct net_device
*dev
)
991 struct netdev_phys_item_id ppid
;
993 err
= dev_get_phys_port_id(dev
, &ppid
);
995 if (err
== -EOPNOTSUPP
)
1000 if (nla_put(skb
, IFLA_PHYS_PORT_ID
, ppid
.id_len
, ppid
.id
))
1006 static int rtnl_phys_port_name_fill(struct sk_buff
*skb
, struct net_device
*dev
)
1008 char name
[IFNAMSIZ
];
1011 err
= dev_get_phys_port_name(dev
, name
, sizeof(name
));
1013 if (err
== -EOPNOTSUPP
)
1018 if (nla_put(skb
, IFLA_PHYS_PORT_NAME
, strlen(name
), name
))
1024 static int rtnl_phys_switch_id_fill(struct sk_buff
*skb
, struct net_device
*dev
)
1027 struct switchdev_attr attr
= {
1028 .id
= SWITCHDEV_ATTR_PORT_PARENT_ID
,
1029 .flags
= SWITCHDEV_F_NO_RECURSE
,
1032 err
= switchdev_port_attr_get(dev
, &attr
);
1034 if (err
== -EOPNOTSUPP
)
1039 if (nla_put(skb
, IFLA_PHYS_SWITCH_ID
, attr
.u
.ppid
.id_len
,
1046 static int rtnl_fill_ifinfo(struct sk_buff
*skb
, struct net_device
*dev
,
1047 int type
, u32 pid
, u32 seq
, u32 change
,
1048 unsigned int flags
, u32 ext_filter_mask
)
1050 struct ifinfomsg
*ifm
;
1051 struct nlmsghdr
*nlh
;
1052 struct rtnl_link_stats64 temp
;
1053 const struct rtnl_link_stats64
*stats
;
1054 struct nlattr
*attr
, *af_spec
;
1055 struct rtnl_af_ops
*af_ops
;
1056 struct net_device
*upper_dev
= netdev_master_upper_dev_get(dev
);
1059 nlh
= nlmsg_put(skb
, pid
, seq
, type
, sizeof(*ifm
), flags
);
1063 ifm
= nlmsg_data(nlh
);
1064 ifm
->ifi_family
= AF_UNSPEC
;
1066 ifm
->ifi_type
= dev
->type
;
1067 ifm
->ifi_index
= dev
->ifindex
;
1068 ifm
->ifi_flags
= dev_get_flags(dev
);
1069 ifm
->ifi_change
= change
;
1071 if (nla_put_string(skb
, IFLA_IFNAME
, dev
->name
) ||
1072 nla_put_u32(skb
, IFLA_TXQLEN
, dev
->tx_queue_len
) ||
1073 nla_put_u8(skb
, IFLA_OPERSTATE
,
1074 netif_running(dev
) ? dev
->operstate
: IF_OPER_DOWN
) ||
1075 nla_put_u8(skb
, IFLA_LINKMODE
, dev
->link_mode
) ||
1076 nla_put_u32(skb
, IFLA_MTU
, dev
->mtu
) ||
1077 nla_put_u32(skb
, IFLA_GROUP
, dev
->group
) ||
1078 nla_put_u32(skb
, IFLA_PROMISCUITY
, dev
->promiscuity
) ||
1079 nla_put_u32(skb
, IFLA_NUM_TX_QUEUES
, dev
->num_tx_queues
) ||
1081 nla_put_u32(skb
, IFLA_NUM_RX_QUEUES
, dev
->num_rx_queues
) ||
1083 (dev
->ifindex
!= dev_get_iflink(dev
) &&
1084 nla_put_u32(skb
, IFLA_LINK
, dev_get_iflink(dev
))) ||
1086 nla_put_u32(skb
, IFLA_MASTER
, upper_dev
->ifindex
)) ||
1087 nla_put_u8(skb
, IFLA_CARRIER
, netif_carrier_ok(dev
)) ||
1089 nla_put_string(skb
, IFLA_QDISC
, dev
->qdisc
->ops
->id
)) ||
1091 nla_put_string(skb
, IFLA_IFALIAS
, dev
->ifalias
)) ||
1092 nla_put_u32(skb
, IFLA_CARRIER_CHANGES
,
1093 atomic_read(&dev
->carrier_changes
)) ||
1094 nla_put_u8(skb
, IFLA_PROTO_DOWN
, dev
->proto_down
))
1095 goto nla_put_failure
;
1098 struct rtnl_link_ifmap map
= {
1099 .mem_start
= dev
->mem_start
,
1100 .mem_end
= dev
->mem_end
,
1101 .base_addr
= dev
->base_addr
,
1104 .port
= dev
->if_port
,
1106 if (nla_put(skb
, IFLA_MAP
, sizeof(map
), &map
))
1107 goto nla_put_failure
;
1110 if (dev
->addr_len
) {
1111 if (nla_put(skb
, IFLA_ADDRESS
, dev
->addr_len
, dev
->dev_addr
) ||
1112 nla_put(skb
, IFLA_BROADCAST
, dev
->addr_len
, dev
->broadcast
))
1113 goto nla_put_failure
;
1116 if (rtnl_phys_port_id_fill(skb
, dev
))
1117 goto nla_put_failure
;
1119 if (rtnl_phys_port_name_fill(skb
, dev
))
1120 goto nla_put_failure
;
1122 if (rtnl_phys_switch_id_fill(skb
, dev
))
1123 goto nla_put_failure
;
1125 attr
= nla_reserve(skb
, IFLA_STATS
,
1126 sizeof(struct rtnl_link_stats
));
1128 goto nla_put_failure
;
1130 stats
= dev_get_stats(dev
, &temp
);
1131 copy_rtnl_link_stats(nla_data(attr
), stats
);
1133 attr
= nla_reserve(skb
, IFLA_STATS64
,
1134 sizeof(struct rtnl_link_stats64
));
1136 goto nla_put_failure
;
1137 copy_rtnl_link_stats64(nla_data(attr
), stats
);
1139 if (dev
->dev
.parent
&& (ext_filter_mask
& RTEXT_FILTER_VF
) &&
1140 nla_put_u32(skb
, IFLA_NUM_VF
, dev_num_vf(dev
->dev
.parent
)))
1141 goto nla_put_failure
;
1143 if (dev
->netdev_ops
->ndo_get_vf_config
&& dev
->dev
.parent
1144 && (ext_filter_mask
& RTEXT_FILTER_VF
)) {
1147 struct nlattr
*vfinfo
, *vf
, *vfstats
;
1148 int num_vfs
= dev_num_vf(dev
->dev
.parent
);
1150 vfinfo
= nla_nest_start(skb
, IFLA_VFINFO_LIST
);
1152 goto nla_put_failure
;
1153 for (i
= 0; i
< num_vfs
; i
++) {
1154 struct ifla_vf_info ivi
;
1155 struct ifla_vf_mac vf_mac
;
1156 struct ifla_vf_vlan vf_vlan
;
1157 struct ifla_vf_rate vf_rate
;
1158 struct ifla_vf_tx_rate vf_tx_rate
;
1159 struct ifla_vf_spoofchk vf_spoofchk
;
1160 struct ifla_vf_link_state vf_linkstate
;
1161 struct ifla_vf_rss_query_en vf_rss_query_en
;
1162 struct ifla_vf_stats vf_stats
;
1165 * Not all SR-IOV capable drivers support the
1166 * spoofcheck and "RSS query enable" query. Preset to
1167 * -1 so the user space tool can detect that the driver
1168 * didn't report anything.
1171 ivi
.rss_query_en
= -1;
1172 memset(ivi
.mac
, 0, sizeof(ivi
.mac
));
1173 /* The default value for VF link state is "auto"
1174 * IFLA_VF_LINK_STATE_AUTO which equals zero
1177 if (dev
->netdev_ops
->ndo_get_vf_config(dev
, i
, &ivi
))
1185 vf_rss_query_en
.vf
= ivi
.vf
;
1187 memcpy(vf_mac
.mac
, ivi
.mac
, sizeof(ivi
.mac
));
1188 vf_vlan
.vlan
= ivi
.vlan
;
1189 vf_vlan
.qos
= ivi
.qos
;
1190 vf_tx_rate
.rate
= ivi
.max_tx_rate
;
1191 vf_rate
.min_tx_rate
= ivi
.min_tx_rate
;
1192 vf_rate
.max_tx_rate
= ivi
.max_tx_rate
;
1193 vf_spoofchk
.setting
= ivi
.spoofchk
;
1194 vf_linkstate
.link_state
= ivi
.linkstate
;
1195 vf_rss_query_en
.setting
= ivi
.rss_query_en
;
1196 vf
= nla_nest_start(skb
, IFLA_VF_INFO
);
1198 nla_nest_cancel(skb
, vfinfo
);
1199 goto nla_put_failure
;
1201 if (nla_put(skb
, IFLA_VF_MAC
, sizeof(vf_mac
), &vf_mac
) ||
1202 nla_put(skb
, IFLA_VF_VLAN
, sizeof(vf_vlan
), &vf_vlan
) ||
1203 nla_put(skb
, IFLA_VF_RATE
, sizeof(vf_rate
),
1205 nla_put(skb
, IFLA_VF_TX_RATE
, sizeof(vf_tx_rate
),
1207 nla_put(skb
, IFLA_VF_SPOOFCHK
, sizeof(vf_spoofchk
),
1209 nla_put(skb
, IFLA_VF_LINK_STATE
, sizeof(vf_linkstate
),
1211 nla_put(skb
, IFLA_VF_RSS_QUERY_EN
,
1212 sizeof(vf_rss_query_en
),
1214 goto nla_put_failure
;
1215 memset(&vf_stats
, 0, sizeof(vf_stats
));
1216 if (dev
->netdev_ops
->ndo_get_vf_stats
)
1217 dev
->netdev_ops
->ndo_get_vf_stats(dev
, i
,
1219 vfstats
= nla_nest_start(skb
, IFLA_VF_STATS
);
1221 nla_nest_cancel(skb
, vf
);
1222 nla_nest_cancel(skb
, vfinfo
);
1223 goto nla_put_failure
;
1225 if (nla_put_u64(skb
, IFLA_VF_STATS_RX_PACKETS
,
1226 vf_stats
.rx_packets
) ||
1227 nla_put_u64(skb
, IFLA_VF_STATS_TX_PACKETS
,
1228 vf_stats
.tx_packets
) ||
1229 nla_put_u64(skb
, IFLA_VF_STATS_RX_BYTES
,
1230 vf_stats
.rx_bytes
) ||
1231 nla_put_u64(skb
, IFLA_VF_STATS_TX_BYTES
,
1232 vf_stats
.tx_bytes
) ||
1233 nla_put_u64(skb
, IFLA_VF_STATS_BROADCAST
,
1234 vf_stats
.broadcast
) ||
1235 nla_put_u64(skb
, IFLA_VF_STATS_MULTICAST
,
1236 vf_stats
.multicast
))
1237 goto nla_put_failure
;
1238 nla_nest_end(skb
, vfstats
);
1239 nla_nest_end(skb
, vf
);
1241 nla_nest_end(skb
, vfinfo
);
1244 if (rtnl_port_fill(skb
, dev
, ext_filter_mask
))
1245 goto nla_put_failure
;
1247 if (dev
->rtnl_link_ops
|| rtnl_have_link_slave_info(dev
)) {
1248 if (rtnl_link_fill(skb
, dev
) < 0)
1249 goto nla_put_failure
;
1252 if (dev
->rtnl_link_ops
&&
1253 dev
->rtnl_link_ops
->get_link_net
) {
1254 struct net
*link_net
= dev
->rtnl_link_ops
->get_link_net(dev
);
1256 if (!net_eq(dev_net(dev
), link_net
)) {
1257 int id
= peernet2id_alloc(dev_net(dev
), link_net
);
1259 if (nla_put_s32(skb
, IFLA_LINK_NETNSID
, id
))
1260 goto nla_put_failure
;
1264 if (!(af_spec
= nla_nest_start(skb
, IFLA_AF_SPEC
)))
1265 goto nla_put_failure
;
1267 list_for_each_entry(af_ops
, &rtnl_af_ops
, list
) {
1268 if (af_ops
->fill_link_af
) {
1272 if (!(af
= nla_nest_start(skb
, af_ops
->family
)))
1273 goto nla_put_failure
;
1275 err
= af_ops
->fill_link_af(skb
, dev
);
1278 * Caller may return ENODATA to indicate that there
1279 * was no data to be dumped. This is not an error, it
1280 * means we should trim the attribute header and
1283 if (err
== -ENODATA
)
1284 nla_nest_cancel(skb
, af
);
1286 goto nla_put_failure
;
1288 nla_nest_end(skb
, af
);
1292 nla_nest_end(skb
, af_spec
);
1294 nlmsg_end(skb
, nlh
);
1298 nlmsg_cancel(skb
, nlh
);
1302 static const struct nla_policy ifla_policy
[IFLA_MAX
+1] = {
1303 [IFLA_IFNAME
] = { .type
= NLA_STRING
, .len
= IFNAMSIZ
-1 },
1304 [IFLA_ADDRESS
] = { .type
= NLA_BINARY
, .len
= MAX_ADDR_LEN
},
1305 [IFLA_BROADCAST
] = { .type
= NLA_BINARY
, .len
= MAX_ADDR_LEN
},
1306 [IFLA_MAP
] = { .len
= sizeof(struct rtnl_link_ifmap
) },
1307 [IFLA_MTU
] = { .type
= NLA_U32
},
1308 [IFLA_LINK
] = { .type
= NLA_U32
},
1309 [IFLA_MASTER
] = { .type
= NLA_U32
},
1310 [IFLA_CARRIER
] = { .type
= NLA_U8
},
1311 [IFLA_TXQLEN
] = { .type
= NLA_U32
},
1312 [IFLA_WEIGHT
] = { .type
= NLA_U32
},
1313 [IFLA_OPERSTATE
] = { .type
= NLA_U8
},
1314 [IFLA_LINKMODE
] = { .type
= NLA_U8
},
1315 [IFLA_LINKINFO
] = { .type
= NLA_NESTED
},
1316 [IFLA_NET_NS_PID
] = { .type
= NLA_U32
},
1317 [IFLA_NET_NS_FD
] = { .type
= NLA_U32
},
1318 [IFLA_IFALIAS
] = { .type
= NLA_STRING
, .len
= IFALIASZ
-1 },
1319 [IFLA_VFINFO_LIST
] = {. type
= NLA_NESTED
},
1320 [IFLA_VF_PORTS
] = { .type
= NLA_NESTED
},
1321 [IFLA_PORT_SELF
] = { .type
= NLA_NESTED
},
1322 [IFLA_AF_SPEC
] = { .type
= NLA_NESTED
},
1323 [IFLA_EXT_MASK
] = { .type
= NLA_U32
},
1324 [IFLA_PROMISCUITY
] = { .type
= NLA_U32
},
1325 [IFLA_NUM_TX_QUEUES
] = { .type
= NLA_U32
},
1326 [IFLA_NUM_RX_QUEUES
] = { .type
= NLA_U32
},
1327 [IFLA_PHYS_PORT_ID
] = { .type
= NLA_BINARY
, .len
= MAX_PHYS_ITEM_ID_LEN
},
1328 [IFLA_CARRIER_CHANGES
] = { .type
= NLA_U32
}, /* ignored */
1329 [IFLA_PHYS_SWITCH_ID
] = { .type
= NLA_BINARY
, .len
= MAX_PHYS_ITEM_ID_LEN
},
1330 [IFLA_LINK_NETNSID
] = { .type
= NLA_S32
},
1331 [IFLA_PROTO_DOWN
] = { .type
= NLA_U8
},
1334 static const struct nla_policy ifla_info_policy
[IFLA_INFO_MAX
+1] = {
1335 [IFLA_INFO_KIND
] = { .type
= NLA_STRING
},
1336 [IFLA_INFO_DATA
] = { .type
= NLA_NESTED
},
1337 [IFLA_INFO_SLAVE_KIND
] = { .type
= NLA_STRING
},
1338 [IFLA_INFO_SLAVE_DATA
] = { .type
= NLA_NESTED
},
1341 static const struct nla_policy ifla_vf_policy
[IFLA_VF_MAX
+1] = {
1342 [IFLA_VF_MAC
] = { .len
= sizeof(struct ifla_vf_mac
) },
1343 [IFLA_VF_VLAN
] = { .len
= sizeof(struct ifla_vf_vlan
) },
1344 [IFLA_VF_TX_RATE
] = { .len
= sizeof(struct ifla_vf_tx_rate
) },
1345 [IFLA_VF_SPOOFCHK
] = { .len
= sizeof(struct ifla_vf_spoofchk
) },
1346 [IFLA_VF_RATE
] = { .len
= sizeof(struct ifla_vf_rate
) },
1347 [IFLA_VF_LINK_STATE
] = { .len
= sizeof(struct ifla_vf_link_state
) },
1348 [IFLA_VF_RSS_QUERY_EN
] = { .len
= sizeof(struct ifla_vf_rss_query_en
) },
1349 [IFLA_VF_STATS
] = { .type
= NLA_NESTED
},
1352 static const struct nla_policy ifla_vf_stats_policy
[IFLA_VF_STATS_MAX
+ 1] = {
1353 [IFLA_VF_STATS_RX_PACKETS
] = { .type
= NLA_U64
},
1354 [IFLA_VF_STATS_TX_PACKETS
] = { .type
= NLA_U64
},
1355 [IFLA_VF_STATS_RX_BYTES
] = { .type
= NLA_U64
},
1356 [IFLA_VF_STATS_TX_BYTES
] = { .type
= NLA_U64
},
1357 [IFLA_VF_STATS_BROADCAST
] = { .type
= NLA_U64
},
1358 [IFLA_VF_STATS_MULTICAST
] = { .type
= NLA_U64
},
1361 static const struct nla_policy ifla_port_policy
[IFLA_PORT_MAX
+1] = {
1362 [IFLA_PORT_VF
] = { .type
= NLA_U32
},
1363 [IFLA_PORT_PROFILE
] = { .type
= NLA_STRING
,
1364 .len
= PORT_PROFILE_MAX
},
1365 [IFLA_PORT_VSI_TYPE
] = { .type
= NLA_BINARY
,
1366 .len
= sizeof(struct ifla_port_vsi
)},
1367 [IFLA_PORT_INSTANCE_UUID
] = { .type
= NLA_BINARY
,
1368 .len
= PORT_UUID_MAX
},
1369 [IFLA_PORT_HOST_UUID
] = { .type
= NLA_STRING
,
1370 .len
= PORT_UUID_MAX
},
1371 [IFLA_PORT_REQUEST
] = { .type
= NLA_U8
, },
1372 [IFLA_PORT_RESPONSE
] = { .type
= NLA_U16
, },
1375 static int rtnl_dump_ifinfo(struct sk_buff
*skb
, struct netlink_callback
*cb
)
1377 struct net
*net
= sock_net(skb
->sk
);
1380 struct net_device
*dev
;
1381 struct hlist_head
*head
;
1382 struct nlattr
*tb
[IFLA_MAX
+1];
1383 u32 ext_filter_mask
= 0;
1388 s_idx
= cb
->args
[1];
1390 cb
->seq
= net
->dev_base_seq
;
1392 /* A hack to preserve kernel<->userspace interface.
1393 * The correct header is ifinfomsg. It is consistent with rtnl_getlink.
1394 * However, before Linux v3.9 the code here assumed rtgenmsg and that's
1395 * what iproute2 < v3.9.0 used.
1396 * We can detect the old iproute2. Even including the IFLA_EXT_MASK
1397 * attribute, its netlink message is shorter than struct ifinfomsg.
1399 hdrlen
= nlmsg_len(cb
->nlh
) < sizeof(struct ifinfomsg
) ?
1400 sizeof(struct rtgenmsg
) : sizeof(struct ifinfomsg
);
1402 if (nlmsg_parse(cb
->nlh
, hdrlen
, tb
, IFLA_MAX
, ifla_policy
) >= 0) {
1404 if (tb
[IFLA_EXT_MASK
])
1405 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
1408 for (h
= s_h
; h
< NETDEV_HASHENTRIES
; h
++, s_idx
= 0) {
1410 head
= &net
->dev_index_head
[h
];
1411 hlist_for_each_entry(dev
, head
, index_hlist
) {
1414 err
= rtnl_fill_ifinfo(skb
, dev
, RTM_NEWLINK
,
1415 NETLINK_CB(cb
->skb
).portid
,
1416 cb
->nlh
->nlmsg_seq
, 0,
1419 /* If we ran out of room on the first message,
1422 WARN_ON((err
== -EMSGSIZE
) && (skb
->len
== 0));
1427 nl_dump_check_consistent(cb
, nlmsg_hdr(skb
));
1439 int rtnl_nla_parse_ifla(struct nlattr
**tb
, const struct nlattr
*head
, int len
)
1441 return nla_parse(tb
, IFLA_MAX
, head
, len
, ifla_policy
);
1443 EXPORT_SYMBOL(rtnl_nla_parse_ifla
);
1445 struct net
*rtnl_link_get_net(struct net
*src_net
, struct nlattr
*tb
[])
1448 /* Examine the link attributes and figure out which
1449 * network namespace we are talking about.
1451 if (tb
[IFLA_NET_NS_PID
])
1452 net
= get_net_ns_by_pid(nla_get_u32(tb
[IFLA_NET_NS_PID
]));
1453 else if (tb
[IFLA_NET_NS_FD
])
1454 net
= get_net_ns_by_fd(nla_get_u32(tb
[IFLA_NET_NS_FD
]));
1456 net
= get_net(src_net
);
1459 EXPORT_SYMBOL(rtnl_link_get_net
);
1461 static int validate_linkmsg(struct net_device
*dev
, struct nlattr
*tb
[])
1464 if (tb
[IFLA_ADDRESS
] &&
1465 nla_len(tb
[IFLA_ADDRESS
]) < dev
->addr_len
)
1468 if (tb
[IFLA_BROADCAST
] &&
1469 nla_len(tb
[IFLA_BROADCAST
]) < dev
->addr_len
)
1473 if (tb
[IFLA_AF_SPEC
]) {
1477 nla_for_each_nested(af
, tb
[IFLA_AF_SPEC
], rem
) {
1478 const struct rtnl_af_ops
*af_ops
;
1480 if (!(af_ops
= rtnl_af_lookup(nla_type(af
))))
1481 return -EAFNOSUPPORT
;
1483 if (!af_ops
->set_link_af
)
1486 if (af_ops
->validate_link_af
) {
1487 err
= af_ops
->validate_link_af(dev
, af
);
1497 static int do_setvfinfo(struct net_device
*dev
, struct nlattr
**tb
)
1499 const struct net_device_ops
*ops
= dev
->netdev_ops
;
1502 if (tb
[IFLA_VF_MAC
]) {
1503 struct ifla_vf_mac
*ivm
= nla_data(tb
[IFLA_VF_MAC
]);
1506 if (ops
->ndo_set_vf_mac
)
1507 err
= ops
->ndo_set_vf_mac(dev
, ivm
->vf
,
1513 if (tb
[IFLA_VF_VLAN
]) {
1514 struct ifla_vf_vlan
*ivv
= nla_data(tb
[IFLA_VF_VLAN
]);
1517 if (ops
->ndo_set_vf_vlan
)
1518 err
= ops
->ndo_set_vf_vlan(dev
, ivv
->vf
, ivv
->vlan
,
1524 if (tb
[IFLA_VF_TX_RATE
]) {
1525 struct ifla_vf_tx_rate
*ivt
= nla_data(tb
[IFLA_VF_TX_RATE
]);
1526 struct ifla_vf_info ivf
;
1529 if (ops
->ndo_get_vf_config
)
1530 err
= ops
->ndo_get_vf_config(dev
, ivt
->vf
, &ivf
);
1535 if (ops
->ndo_set_vf_rate
)
1536 err
= ops
->ndo_set_vf_rate(dev
, ivt
->vf
,
1543 if (tb
[IFLA_VF_RATE
]) {
1544 struct ifla_vf_rate
*ivt
= nla_data(tb
[IFLA_VF_RATE
]);
1547 if (ops
->ndo_set_vf_rate
)
1548 err
= ops
->ndo_set_vf_rate(dev
, ivt
->vf
,
1555 if (tb
[IFLA_VF_SPOOFCHK
]) {
1556 struct ifla_vf_spoofchk
*ivs
= nla_data(tb
[IFLA_VF_SPOOFCHK
]);
1559 if (ops
->ndo_set_vf_spoofchk
)
1560 err
= ops
->ndo_set_vf_spoofchk(dev
, ivs
->vf
,
1566 if (tb
[IFLA_VF_LINK_STATE
]) {
1567 struct ifla_vf_link_state
*ivl
= nla_data(tb
[IFLA_VF_LINK_STATE
]);
1570 if (ops
->ndo_set_vf_link_state
)
1571 err
= ops
->ndo_set_vf_link_state(dev
, ivl
->vf
,
1577 if (tb
[IFLA_VF_RSS_QUERY_EN
]) {
1578 struct ifla_vf_rss_query_en
*ivrssq_en
;
1581 ivrssq_en
= nla_data(tb
[IFLA_VF_RSS_QUERY_EN
]);
1582 if (ops
->ndo_set_vf_rss_query_en
)
1583 err
= ops
->ndo_set_vf_rss_query_en(dev
, ivrssq_en
->vf
,
1584 ivrssq_en
->setting
);
1592 static int do_set_master(struct net_device
*dev
, int ifindex
)
1594 struct net_device
*upper_dev
= netdev_master_upper_dev_get(dev
);
1595 const struct net_device_ops
*ops
;
1599 if (upper_dev
->ifindex
== ifindex
)
1601 ops
= upper_dev
->netdev_ops
;
1602 if (ops
->ndo_del_slave
) {
1603 err
= ops
->ndo_del_slave(upper_dev
, dev
);
1612 upper_dev
= __dev_get_by_index(dev_net(dev
), ifindex
);
1615 ops
= upper_dev
->netdev_ops
;
1616 if (ops
->ndo_add_slave
) {
1617 err
= ops
->ndo_add_slave(upper_dev
, dev
);
1627 #define DO_SETLINK_MODIFIED 0x01
1628 /* notify flag means notify + modified. */
1629 #define DO_SETLINK_NOTIFY 0x03
1630 static int do_setlink(const struct sk_buff
*skb
,
1631 struct net_device
*dev
, struct ifinfomsg
*ifm
,
1632 struct nlattr
**tb
, char *ifname
, int status
)
1634 const struct net_device_ops
*ops
= dev
->netdev_ops
;
1637 if (tb
[IFLA_NET_NS_PID
] || tb
[IFLA_NET_NS_FD
]) {
1638 struct net
*net
= rtnl_link_get_net(dev_net(dev
), tb
);
1643 if (!netlink_ns_capable(skb
, net
->user_ns
, CAP_NET_ADMIN
)) {
1648 err
= dev_change_net_namespace(dev
, net
, ifname
);
1652 status
|= DO_SETLINK_MODIFIED
;
1656 struct rtnl_link_ifmap
*u_map
;
1659 if (!ops
->ndo_set_config
) {
1664 if (!netif_device_present(dev
)) {
1669 u_map
= nla_data(tb
[IFLA_MAP
]);
1670 k_map
.mem_start
= (unsigned long) u_map
->mem_start
;
1671 k_map
.mem_end
= (unsigned long) u_map
->mem_end
;
1672 k_map
.base_addr
= (unsigned short) u_map
->base_addr
;
1673 k_map
.irq
= (unsigned char) u_map
->irq
;
1674 k_map
.dma
= (unsigned char) u_map
->dma
;
1675 k_map
.port
= (unsigned char) u_map
->port
;
1677 err
= ops
->ndo_set_config(dev
, &k_map
);
1681 status
|= DO_SETLINK_NOTIFY
;
1684 if (tb
[IFLA_ADDRESS
]) {
1685 struct sockaddr
*sa
;
1688 len
= sizeof(sa_family_t
) + dev
->addr_len
;
1689 sa
= kmalloc(len
, GFP_KERNEL
);
1694 sa
->sa_family
= dev
->type
;
1695 memcpy(sa
->sa_data
, nla_data(tb
[IFLA_ADDRESS
]),
1697 err
= dev_set_mac_address(dev
, sa
);
1701 status
|= DO_SETLINK_MODIFIED
;
1705 err
= dev_set_mtu(dev
, nla_get_u32(tb
[IFLA_MTU
]));
1708 status
|= DO_SETLINK_MODIFIED
;
1711 if (tb
[IFLA_GROUP
]) {
1712 dev_set_group(dev
, nla_get_u32(tb
[IFLA_GROUP
]));
1713 status
|= DO_SETLINK_NOTIFY
;
1717 * Interface selected by interface index but interface
1718 * name provided implies that a name change has been
1721 if (ifm
->ifi_index
> 0 && ifname
[0]) {
1722 err
= dev_change_name(dev
, ifname
);
1725 status
|= DO_SETLINK_MODIFIED
;
1728 if (tb
[IFLA_IFALIAS
]) {
1729 err
= dev_set_alias(dev
, nla_data(tb
[IFLA_IFALIAS
]),
1730 nla_len(tb
[IFLA_IFALIAS
]));
1733 status
|= DO_SETLINK_NOTIFY
;
1736 if (tb
[IFLA_BROADCAST
]) {
1737 nla_memcpy(dev
->broadcast
, tb
[IFLA_BROADCAST
], dev
->addr_len
);
1738 call_netdevice_notifiers(NETDEV_CHANGEADDR
, dev
);
1741 if (ifm
->ifi_flags
|| ifm
->ifi_change
) {
1742 err
= dev_change_flags(dev
, rtnl_dev_combine_flags(dev
, ifm
));
1747 if (tb
[IFLA_MASTER
]) {
1748 err
= do_set_master(dev
, nla_get_u32(tb
[IFLA_MASTER
]));
1751 status
|= DO_SETLINK_MODIFIED
;
1754 if (tb
[IFLA_CARRIER
]) {
1755 err
= dev_change_carrier(dev
, nla_get_u8(tb
[IFLA_CARRIER
]));
1758 status
|= DO_SETLINK_MODIFIED
;
1761 if (tb
[IFLA_TXQLEN
]) {
1762 unsigned long value
= nla_get_u32(tb
[IFLA_TXQLEN
]);
1764 if (dev
->tx_queue_len
^ value
)
1765 status
|= DO_SETLINK_NOTIFY
;
1767 dev
->tx_queue_len
= value
;
1770 if (tb
[IFLA_OPERSTATE
])
1771 set_operstate(dev
, nla_get_u8(tb
[IFLA_OPERSTATE
]));
1773 if (tb
[IFLA_LINKMODE
]) {
1774 unsigned char value
= nla_get_u8(tb
[IFLA_LINKMODE
]);
1776 write_lock_bh(&dev_base_lock
);
1777 if (dev
->link_mode
^ value
)
1778 status
|= DO_SETLINK_NOTIFY
;
1779 dev
->link_mode
= value
;
1780 write_unlock_bh(&dev_base_lock
);
1783 if (tb
[IFLA_VFINFO_LIST
]) {
1784 struct nlattr
*vfinfo
[IFLA_VF_MAX
+ 1];
1785 struct nlattr
*attr
;
1788 nla_for_each_nested(attr
, tb
[IFLA_VFINFO_LIST
], rem
) {
1789 if (nla_type(attr
) != IFLA_VF_INFO
||
1790 nla_len(attr
) < NLA_HDRLEN
) {
1794 err
= nla_parse_nested(vfinfo
, IFLA_VF_MAX
, attr
,
1798 err
= do_setvfinfo(dev
, vfinfo
);
1801 status
|= DO_SETLINK_NOTIFY
;
1806 if (tb
[IFLA_VF_PORTS
]) {
1807 struct nlattr
*port
[IFLA_PORT_MAX
+1];
1808 struct nlattr
*attr
;
1813 if (!ops
->ndo_set_vf_port
)
1816 nla_for_each_nested(attr
, tb
[IFLA_VF_PORTS
], rem
) {
1817 if (nla_type(attr
) != IFLA_VF_PORT
||
1818 nla_len(attr
) < NLA_HDRLEN
) {
1822 err
= nla_parse_nested(port
, IFLA_PORT_MAX
, attr
,
1826 if (!port
[IFLA_PORT_VF
]) {
1830 vf
= nla_get_u32(port
[IFLA_PORT_VF
]);
1831 err
= ops
->ndo_set_vf_port(dev
, vf
, port
);
1834 status
|= DO_SETLINK_NOTIFY
;
1839 if (tb
[IFLA_PORT_SELF
]) {
1840 struct nlattr
*port
[IFLA_PORT_MAX
+1];
1842 err
= nla_parse_nested(port
, IFLA_PORT_MAX
,
1843 tb
[IFLA_PORT_SELF
], ifla_port_policy
);
1848 if (ops
->ndo_set_vf_port
)
1849 err
= ops
->ndo_set_vf_port(dev
, PORT_SELF_VF
, port
);
1852 status
|= DO_SETLINK_NOTIFY
;
1855 if (tb
[IFLA_AF_SPEC
]) {
1859 nla_for_each_nested(af
, tb
[IFLA_AF_SPEC
], rem
) {
1860 const struct rtnl_af_ops
*af_ops
;
1862 if (!(af_ops
= rtnl_af_lookup(nla_type(af
))))
1865 err
= af_ops
->set_link_af(dev
, af
);
1869 status
|= DO_SETLINK_NOTIFY
;
1874 if (tb
[IFLA_PROTO_DOWN
]) {
1875 err
= dev_change_proto_down(dev
,
1876 nla_get_u8(tb
[IFLA_PROTO_DOWN
]));
1879 status
|= DO_SETLINK_NOTIFY
;
1883 if (status
& DO_SETLINK_MODIFIED
) {
1884 if (status
& DO_SETLINK_NOTIFY
)
1885 netdev_state_change(dev
);
1888 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",
1895 static int rtnl_setlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
1897 struct net
*net
= sock_net(skb
->sk
);
1898 struct ifinfomsg
*ifm
;
1899 struct net_device
*dev
;
1901 struct nlattr
*tb
[IFLA_MAX
+1];
1902 char ifname
[IFNAMSIZ
];
1904 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
1908 if (tb
[IFLA_IFNAME
])
1909 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
1914 ifm
= nlmsg_data(nlh
);
1915 if (ifm
->ifi_index
> 0)
1916 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
1917 else if (tb
[IFLA_IFNAME
])
1918 dev
= __dev_get_by_name(net
, ifname
);
1927 err
= validate_linkmsg(dev
, tb
);
1931 err
= do_setlink(skb
, dev
, ifm
, tb
, ifname
, 0);
1936 static int rtnl_group_dellink(const struct net
*net
, int group
)
1938 struct net_device
*dev
, *aux
;
1939 LIST_HEAD(list_kill
);
1945 for_each_netdev(net
, dev
) {
1946 if (dev
->group
== group
) {
1947 const struct rtnl_link_ops
*ops
;
1950 ops
= dev
->rtnl_link_ops
;
1951 if (!ops
|| !ops
->dellink
)
1959 for_each_netdev_safe(net
, dev
, aux
) {
1960 if (dev
->group
== group
) {
1961 const struct rtnl_link_ops
*ops
;
1963 ops
= dev
->rtnl_link_ops
;
1964 ops
->dellink(dev
, &list_kill
);
1967 unregister_netdevice_many(&list_kill
);
1972 int rtnl_delete_link(struct net_device
*dev
)
1974 const struct rtnl_link_ops
*ops
;
1975 LIST_HEAD(list_kill
);
1977 ops
= dev
->rtnl_link_ops
;
1978 if (!ops
|| !ops
->dellink
)
1981 ops
->dellink(dev
, &list_kill
);
1982 unregister_netdevice_many(&list_kill
);
1986 EXPORT_SYMBOL_GPL(rtnl_delete_link
);
1988 static int rtnl_dellink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
1990 struct net
*net
= sock_net(skb
->sk
);
1991 struct net_device
*dev
;
1992 struct ifinfomsg
*ifm
;
1993 char ifname
[IFNAMSIZ
];
1994 struct nlattr
*tb
[IFLA_MAX
+1];
1997 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
2001 if (tb
[IFLA_IFNAME
])
2002 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
2004 ifm
= nlmsg_data(nlh
);
2005 if (ifm
->ifi_index
> 0)
2006 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2007 else if (tb
[IFLA_IFNAME
])
2008 dev
= __dev_get_by_name(net
, ifname
);
2009 else if (tb
[IFLA_GROUP
])
2010 return rtnl_group_dellink(net
, nla_get_u32(tb
[IFLA_GROUP
]));
2017 return rtnl_delete_link(dev
);
2020 int rtnl_configure_link(struct net_device
*dev
, const struct ifinfomsg
*ifm
)
2022 unsigned int old_flags
;
2025 old_flags
= dev
->flags
;
2026 if (ifm
&& (ifm
->ifi_flags
|| ifm
->ifi_change
)) {
2027 err
= __dev_change_flags(dev
, rtnl_dev_combine_flags(dev
, ifm
));
2032 dev
->rtnl_link_state
= RTNL_LINK_INITIALIZED
;
2034 __dev_notify_flags(dev
, old_flags
, ~0U);
2037 EXPORT_SYMBOL(rtnl_configure_link
);
2039 struct net_device
*rtnl_create_link(struct net
*net
,
2040 const char *ifname
, unsigned char name_assign_type
,
2041 const struct rtnl_link_ops
*ops
, struct nlattr
*tb
[])
2044 struct net_device
*dev
;
2045 unsigned int num_tx_queues
= 1;
2046 unsigned int num_rx_queues
= 1;
2048 if (tb
[IFLA_NUM_TX_QUEUES
])
2049 num_tx_queues
= nla_get_u32(tb
[IFLA_NUM_TX_QUEUES
]);
2050 else if (ops
->get_num_tx_queues
)
2051 num_tx_queues
= ops
->get_num_tx_queues();
2053 if (tb
[IFLA_NUM_RX_QUEUES
])
2054 num_rx_queues
= nla_get_u32(tb
[IFLA_NUM_RX_QUEUES
]);
2055 else if (ops
->get_num_rx_queues
)
2056 num_rx_queues
= ops
->get_num_rx_queues();
2059 dev
= alloc_netdev_mqs(ops
->priv_size
, ifname
, name_assign_type
,
2060 ops
->setup
, num_tx_queues
, num_rx_queues
);
2064 dev_net_set(dev
, net
);
2065 dev
->rtnl_link_ops
= ops
;
2066 dev
->rtnl_link_state
= RTNL_LINK_INITIALIZING
;
2069 dev
->mtu
= nla_get_u32(tb
[IFLA_MTU
]);
2070 if (tb
[IFLA_ADDRESS
]) {
2071 memcpy(dev
->dev_addr
, nla_data(tb
[IFLA_ADDRESS
]),
2072 nla_len(tb
[IFLA_ADDRESS
]));
2073 dev
->addr_assign_type
= NET_ADDR_SET
;
2075 if (tb
[IFLA_BROADCAST
])
2076 memcpy(dev
->broadcast
, nla_data(tb
[IFLA_BROADCAST
]),
2077 nla_len(tb
[IFLA_BROADCAST
]));
2078 if (tb
[IFLA_TXQLEN
])
2079 dev
->tx_queue_len
= nla_get_u32(tb
[IFLA_TXQLEN
]);
2080 if (tb
[IFLA_OPERSTATE
])
2081 set_operstate(dev
, nla_get_u8(tb
[IFLA_OPERSTATE
]));
2082 if (tb
[IFLA_LINKMODE
])
2083 dev
->link_mode
= nla_get_u8(tb
[IFLA_LINKMODE
]);
2085 dev_set_group(dev
, nla_get_u32(tb
[IFLA_GROUP
]));
2090 return ERR_PTR(err
);
2092 EXPORT_SYMBOL(rtnl_create_link
);
2094 static int rtnl_group_changelink(const struct sk_buff
*skb
,
2095 struct net
*net
, int group
,
2096 struct ifinfomsg
*ifm
,
2099 struct net_device
*dev
, *aux
;
2102 for_each_netdev_safe(net
, dev
, aux
) {
2103 if (dev
->group
== group
) {
2104 err
= do_setlink(skb
, dev
, ifm
, tb
, NULL
, 0);
2113 static int rtnl_newlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2115 struct net
*net
= sock_net(skb
->sk
);
2116 const struct rtnl_link_ops
*ops
;
2117 const struct rtnl_link_ops
*m_ops
= NULL
;
2118 struct net_device
*dev
;
2119 struct net_device
*master_dev
= NULL
;
2120 struct ifinfomsg
*ifm
;
2121 char kind
[MODULE_NAME_LEN
];
2122 char ifname
[IFNAMSIZ
];
2123 struct nlattr
*tb
[IFLA_MAX
+1];
2124 struct nlattr
*linkinfo
[IFLA_INFO_MAX
+1];
2125 unsigned char name_assign_type
= NET_NAME_USER
;
2128 #ifdef CONFIG_MODULES
2131 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
2135 if (tb
[IFLA_IFNAME
])
2136 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
2140 ifm
= nlmsg_data(nlh
);
2141 if (ifm
->ifi_index
> 0)
2142 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2145 dev
= __dev_get_by_name(net
, ifname
);
2151 master_dev
= netdev_master_upper_dev_get(dev
);
2153 m_ops
= master_dev
->rtnl_link_ops
;
2156 err
= validate_linkmsg(dev
, tb
);
2160 if (tb
[IFLA_LINKINFO
]) {
2161 err
= nla_parse_nested(linkinfo
, IFLA_INFO_MAX
,
2162 tb
[IFLA_LINKINFO
], ifla_info_policy
);
2166 memset(linkinfo
, 0, sizeof(linkinfo
));
2168 if (linkinfo
[IFLA_INFO_KIND
]) {
2169 nla_strlcpy(kind
, linkinfo
[IFLA_INFO_KIND
], sizeof(kind
));
2170 ops
= rtnl_link_ops_get(kind
);
2177 struct nlattr
*attr
[ops
? ops
->maxtype
+ 1 : 1];
2178 struct nlattr
*slave_attr
[m_ops
? m_ops
->slave_maxtype
+ 1 : 1];
2179 struct nlattr
**data
= NULL
;
2180 struct nlattr
**slave_data
= NULL
;
2181 struct net
*dest_net
, *link_net
= NULL
;
2184 if (ops
->maxtype
&& linkinfo
[IFLA_INFO_DATA
]) {
2185 err
= nla_parse_nested(attr
, ops
->maxtype
,
2186 linkinfo
[IFLA_INFO_DATA
],
2192 if (ops
->validate
) {
2193 err
= ops
->validate(tb
, data
);
2200 if (m_ops
->slave_maxtype
&&
2201 linkinfo
[IFLA_INFO_SLAVE_DATA
]) {
2202 err
= nla_parse_nested(slave_attr
,
2203 m_ops
->slave_maxtype
,
2204 linkinfo
[IFLA_INFO_SLAVE_DATA
],
2205 m_ops
->slave_policy
);
2208 slave_data
= slave_attr
;
2210 if (m_ops
->slave_validate
) {
2211 err
= m_ops
->slave_validate(tb
, slave_data
);
2220 if (nlh
->nlmsg_flags
& NLM_F_EXCL
)
2222 if (nlh
->nlmsg_flags
& NLM_F_REPLACE
)
2225 if (linkinfo
[IFLA_INFO_DATA
]) {
2226 if (!ops
|| ops
!= dev
->rtnl_link_ops
||
2230 err
= ops
->changelink(dev
, tb
, data
);
2233 status
|= DO_SETLINK_NOTIFY
;
2236 if (linkinfo
[IFLA_INFO_SLAVE_DATA
]) {
2237 if (!m_ops
|| !m_ops
->slave_changelink
)
2240 err
= m_ops
->slave_changelink(master_dev
, dev
,
2244 status
|= DO_SETLINK_NOTIFY
;
2247 return do_setlink(skb
, dev
, ifm
, tb
, ifname
, status
);
2250 if (!(nlh
->nlmsg_flags
& NLM_F_CREATE
)) {
2251 if (ifm
->ifi_index
== 0 && tb
[IFLA_GROUP
])
2252 return rtnl_group_changelink(skb
, net
,
2253 nla_get_u32(tb
[IFLA_GROUP
]),
2258 if (tb
[IFLA_MAP
] || tb
[IFLA_MASTER
] || tb
[IFLA_PROTINFO
])
2262 #ifdef CONFIG_MODULES
2265 request_module("rtnl-link-%s", kind
);
2267 ops
= rtnl_link_ops_get(kind
);
2279 snprintf(ifname
, IFNAMSIZ
, "%s%%d", ops
->kind
);
2280 name_assign_type
= NET_NAME_ENUM
;
2283 dest_net
= rtnl_link_get_net(net
, tb
);
2284 if (IS_ERR(dest_net
))
2285 return PTR_ERR(dest_net
);
2288 if (!netlink_ns_capable(skb
, dest_net
->user_ns
, CAP_NET_ADMIN
))
2291 if (tb
[IFLA_LINK_NETNSID
]) {
2292 int id
= nla_get_s32(tb
[IFLA_LINK_NETNSID
]);
2294 link_net
= get_net_ns_by_id(dest_net
, id
);
2300 if (!netlink_ns_capable(skb
, link_net
->user_ns
, CAP_NET_ADMIN
))
2304 dev
= rtnl_create_link(link_net
? : dest_net
, ifname
,
2305 name_assign_type
, ops
, tb
);
2311 dev
->ifindex
= ifm
->ifi_index
;
2314 err
= ops
->newlink(link_net
? : net
, dev
, tb
, data
);
2315 /* Drivers should call free_netdev() in ->destructor
2316 * and unregister it on failure after registration
2317 * so that device could be finally freed in rtnl_unlock.
2320 /* If device is not registered at all, free it now */
2321 if (dev
->reg_state
== NETREG_UNINITIALIZED
)
2326 err
= register_netdevice(dev
);
2332 err
= rtnl_configure_link(dev
, ifm
);
2334 goto out_unregister
;
2336 err
= dev_change_net_namespace(dev
, dest_net
, ifname
);
2338 goto out_unregister
;
2347 LIST_HEAD(list_kill
);
2349 ops
->dellink(dev
, &list_kill
);
2350 unregister_netdevice_many(&list_kill
);
2352 unregister_netdevice(dev
);
2358 static int rtnl_getlink(struct sk_buff
*skb
, struct nlmsghdr
* nlh
)
2360 struct net
*net
= sock_net(skb
->sk
);
2361 struct ifinfomsg
*ifm
;
2362 char ifname
[IFNAMSIZ
];
2363 struct nlattr
*tb
[IFLA_MAX
+1];
2364 struct net_device
*dev
= NULL
;
2365 struct sk_buff
*nskb
;
2367 u32 ext_filter_mask
= 0;
2369 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
2373 if (tb
[IFLA_IFNAME
])
2374 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
2376 if (tb
[IFLA_EXT_MASK
])
2377 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
2379 ifm
= nlmsg_data(nlh
);
2380 if (ifm
->ifi_index
> 0)
2381 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2382 else if (tb
[IFLA_IFNAME
])
2383 dev
= __dev_get_by_name(net
, ifname
);
2390 nskb
= nlmsg_new(if_nlmsg_size(dev
, ext_filter_mask
), GFP_KERNEL
);
2394 err
= rtnl_fill_ifinfo(nskb
, dev
, RTM_NEWLINK
, NETLINK_CB(skb
).portid
,
2395 nlh
->nlmsg_seq
, 0, 0, ext_filter_mask
);
2397 /* -EMSGSIZE implies BUG in if_nlmsg_size */
2398 WARN_ON(err
== -EMSGSIZE
);
2401 err
= rtnl_unicast(nskb
, net
, NETLINK_CB(skb
).portid
);
2406 static u16
rtnl_calcit(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2408 struct net
*net
= sock_net(skb
->sk
);
2409 struct net_device
*dev
;
2410 struct nlattr
*tb
[IFLA_MAX
+1];
2411 u32 ext_filter_mask
= 0;
2412 u16 min_ifinfo_dump_size
= 0;
2415 /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */
2416 hdrlen
= nlmsg_len(nlh
) < sizeof(struct ifinfomsg
) ?
2417 sizeof(struct rtgenmsg
) : sizeof(struct ifinfomsg
);
2419 if (nlmsg_parse(nlh
, hdrlen
, tb
, IFLA_MAX
, ifla_policy
) >= 0) {
2420 if (tb
[IFLA_EXT_MASK
])
2421 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
2424 if (!ext_filter_mask
)
2425 return NLMSG_GOODSIZE
;
2427 * traverse the list of net devices and compute the minimum
2428 * buffer size based upon the filter mask.
2430 list_for_each_entry(dev
, &net
->dev_base_head
, dev_list
) {
2431 min_ifinfo_dump_size
= max_t(u16
, min_ifinfo_dump_size
,
2436 return min_ifinfo_dump_size
;
2439 static int rtnl_dump_all(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2442 int s_idx
= cb
->family
;
2446 for (idx
= 1; idx
<= RTNL_FAMILY_MAX
; idx
++) {
2447 int type
= cb
->nlh
->nlmsg_type
-RTM_BASE
;
2448 if (idx
< s_idx
|| idx
== PF_PACKET
)
2450 if (rtnl_msg_handlers
[idx
] == NULL
||
2451 rtnl_msg_handlers
[idx
][type
].dumpit
== NULL
)
2454 memset(&cb
->args
[0], 0, sizeof(cb
->args
));
2458 if (rtnl_msg_handlers
[idx
][type
].dumpit(skb
, cb
))
2466 struct sk_buff
*rtmsg_ifinfo_build_skb(int type
, struct net_device
*dev
,
2467 unsigned int change
, gfp_t flags
)
2469 struct net
*net
= dev_net(dev
);
2470 struct sk_buff
*skb
;
2472 size_t if_info_size
;
2474 skb
= nlmsg_new((if_info_size
= if_nlmsg_size(dev
, 0)), flags
);
2478 err
= rtnl_fill_ifinfo(skb
, dev
, type
, 0, 0, change
, 0, 0);
2480 /* -EMSGSIZE implies BUG in if_nlmsg_size() */
2481 WARN_ON(err
== -EMSGSIZE
);
2488 rtnl_set_sk_err(net
, RTNLGRP_LINK
, err
);
2492 void rtmsg_ifinfo_send(struct sk_buff
*skb
, struct net_device
*dev
, gfp_t flags
)
2494 struct net
*net
= dev_net(dev
);
2496 rtnl_notify(skb
, net
, 0, RTNLGRP_LINK
, NULL
, flags
);
2499 void rtmsg_ifinfo(int type
, struct net_device
*dev
, unsigned int change
,
2502 struct sk_buff
*skb
;
2504 if (dev
->reg_state
!= NETREG_REGISTERED
)
2507 skb
= rtmsg_ifinfo_build_skb(type
, dev
, change
, flags
);
2509 rtmsg_ifinfo_send(skb
, dev
, flags
);
2511 EXPORT_SYMBOL(rtmsg_ifinfo
);
2513 static int nlmsg_populate_fdb_fill(struct sk_buff
*skb
,
2514 struct net_device
*dev
,
2515 u8
*addr
, u16 vid
, u32 pid
, u32 seq
,
2516 int type
, unsigned int flags
,
2519 struct nlmsghdr
*nlh
;
2522 nlh
= nlmsg_put(skb
, pid
, seq
, type
, sizeof(*ndm
), nlflags
);
2526 ndm
= nlmsg_data(nlh
);
2527 ndm
->ndm_family
= AF_BRIDGE
;
2530 ndm
->ndm_flags
= flags
;
2532 ndm
->ndm_ifindex
= dev
->ifindex
;
2533 ndm
->ndm_state
= NUD_PERMANENT
;
2535 if (nla_put(skb
, NDA_LLADDR
, ETH_ALEN
, addr
))
2536 goto nla_put_failure
;
2538 if (nla_put(skb
, NDA_VLAN
, sizeof(u16
), &vid
))
2539 goto nla_put_failure
;
2541 nlmsg_end(skb
, nlh
);
2545 nlmsg_cancel(skb
, nlh
);
2549 static inline size_t rtnl_fdb_nlmsg_size(void)
2551 return NLMSG_ALIGN(sizeof(struct ndmsg
)) + nla_total_size(ETH_ALEN
);
2554 static void rtnl_fdb_notify(struct net_device
*dev
, u8
*addr
, u16 vid
, int type
)
2556 struct net
*net
= dev_net(dev
);
2557 struct sk_buff
*skb
;
2560 skb
= nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC
);
2564 err
= nlmsg_populate_fdb_fill(skb
, dev
, addr
, vid
,
2565 0, 0, type
, NTF_SELF
, 0);
2571 rtnl_notify(skb
, net
, 0, RTNLGRP_NEIGH
, NULL
, GFP_ATOMIC
);
2574 rtnl_set_sk_err(net
, RTNLGRP_NEIGH
, err
);
2578 * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry
2580 int ndo_dflt_fdb_add(struct ndmsg
*ndm
,
2581 struct nlattr
*tb
[],
2582 struct net_device
*dev
,
2583 const unsigned char *addr
, u16 vid
,
2588 /* If aging addresses are supported device will need to
2589 * implement its own handler for this.
2591 if (ndm
->ndm_state
&& !(ndm
->ndm_state
& NUD_PERMANENT
)) {
2592 pr_info("%s: FDB only supports static addresses\n", dev
->name
);
2597 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev
->name
);
2601 if (is_unicast_ether_addr(addr
) || is_link_local_ether_addr(addr
))
2602 err
= dev_uc_add_excl(dev
, addr
);
2603 else if (is_multicast_ether_addr(addr
))
2604 err
= dev_mc_add_excl(dev
, addr
);
2606 /* Only return duplicate errors if NLM_F_EXCL is set */
2607 if (err
== -EEXIST
&& !(flags
& NLM_F_EXCL
))
2612 EXPORT_SYMBOL(ndo_dflt_fdb_add
);
2614 static int fdb_vid_parse(struct nlattr
*vlan_attr
, u16
*p_vid
)
2619 if (nla_len(vlan_attr
) != sizeof(u16
)) {
2620 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan\n");
2624 vid
= nla_get_u16(vlan_attr
);
2626 if (!vid
|| vid
>= VLAN_VID_MASK
) {
2627 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan id %d\n",
2636 static int rtnl_fdb_add(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2638 struct net
*net
= sock_net(skb
->sk
);
2640 struct nlattr
*tb
[NDA_MAX
+1];
2641 struct net_device
*dev
;
2646 err
= nlmsg_parse(nlh
, sizeof(*ndm
), tb
, NDA_MAX
, NULL
);
2650 ndm
= nlmsg_data(nlh
);
2651 if (ndm
->ndm_ifindex
== 0) {
2652 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n");
2656 dev
= __dev_get_by_index(net
, ndm
->ndm_ifindex
);
2658 pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n");
2662 if (!tb
[NDA_LLADDR
] || nla_len(tb
[NDA_LLADDR
]) != ETH_ALEN
) {
2663 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n");
2667 addr
= nla_data(tb
[NDA_LLADDR
]);
2669 err
= fdb_vid_parse(tb
[NDA_VLAN
], &vid
);
2675 /* Support fdb on master device the net/bridge default case */
2676 if ((!ndm
->ndm_flags
|| ndm
->ndm_flags
& NTF_MASTER
) &&
2677 (dev
->priv_flags
& IFF_BRIDGE_PORT
)) {
2678 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2679 const struct net_device_ops
*ops
= br_dev
->netdev_ops
;
2681 err
= ops
->ndo_fdb_add(ndm
, tb
, dev
, addr
, vid
,
2686 ndm
->ndm_flags
&= ~NTF_MASTER
;
2689 /* Embedded bridge, macvlan, and any other device support */
2690 if ((ndm
->ndm_flags
& NTF_SELF
)) {
2691 if (dev
->netdev_ops
->ndo_fdb_add
)
2692 err
= dev
->netdev_ops
->ndo_fdb_add(ndm
, tb
, dev
, addr
,
2696 err
= ndo_dflt_fdb_add(ndm
, tb
, dev
, addr
, vid
,
2700 rtnl_fdb_notify(dev
, addr
, vid
, RTM_NEWNEIGH
);
2701 ndm
->ndm_flags
&= ~NTF_SELF
;
2709 * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry
2711 int ndo_dflt_fdb_del(struct ndmsg
*ndm
,
2712 struct nlattr
*tb
[],
2713 struct net_device
*dev
,
2714 const unsigned char *addr
, u16 vid
)
2718 /* If aging addresses are supported device will need to
2719 * implement its own handler for this.
2721 if (!(ndm
->ndm_state
& NUD_PERMANENT
)) {
2722 pr_info("%s: FDB only supports static addresses\n", dev
->name
);
2726 if (is_unicast_ether_addr(addr
) || is_link_local_ether_addr(addr
))
2727 err
= dev_uc_del(dev
, addr
);
2728 else if (is_multicast_ether_addr(addr
))
2729 err
= dev_mc_del(dev
, addr
);
2733 EXPORT_SYMBOL(ndo_dflt_fdb_del
);
2735 static int rtnl_fdb_del(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2737 struct net
*net
= sock_net(skb
->sk
);
2739 struct nlattr
*tb
[NDA_MAX
+1];
2740 struct net_device
*dev
;
2745 if (!netlink_capable(skb
, CAP_NET_ADMIN
))
2748 err
= nlmsg_parse(nlh
, sizeof(*ndm
), tb
, NDA_MAX
, NULL
);
2752 ndm
= nlmsg_data(nlh
);
2753 if (ndm
->ndm_ifindex
== 0) {
2754 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n");
2758 dev
= __dev_get_by_index(net
, ndm
->ndm_ifindex
);
2760 pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n");
2764 if (!tb
[NDA_LLADDR
] || nla_len(tb
[NDA_LLADDR
]) != ETH_ALEN
) {
2765 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n");
2769 addr
= nla_data(tb
[NDA_LLADDR
]);
2771 err
= fdb_vid_parse(tb
[NDA_VLAN
], &vid
);
2777 /* Support fdb on master device the net/bridge default case */
2778 if ((!ndm
->ndm_flags
|| ndm
->ndm_flags
& NTF_MASTER
) &&
2779 (dev
->priv_flags
& IFF_BRIDGE_PORT
)) {
2780 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2781 const struct net_device_ops
*ops
= br_dev
->netdev_ops
;
2783 if (ops
->ndo_fdb_del
)
2784 err
= ops
->ndo_fdb_del(ndm
, tb
, dev
, addr
, vid
);
2789 ndm
->ndm_flags
&= ~NTF_MASTER
;
2792 /* Embedded bridge, macvlan, and any other device support */
2793 if (ndm
->ndm_flags
& NTF_SELF
) {
2794 if (dev
->netdev_ops
->ndo_fdb_del
)
2795 err
= dev
->netdev_ops
->ndo_fdb_del(ndm
, tb
, dev
, addr
,
2798 err
= ndo_dflt_fdb_del(ndm
, tb
, dev
, addr
, vid
);
2801 rtnl_fdb_notify(dev
, addr
, vid
, RTM_DELNEIGH
);
2802 ndm
->ndm_flags
&= ~NTF_SELF
;
2809 static int nlmsg_populate_fdb(struct sk_buff
*skb
,
2810 struct netlink_callback
*cb
,
2811 struct net_device
*dev
,
2813 struct netdev_hw_addr_list
*list
)
2815 struct netdev_hw_addr
*ha
;
2819 portid
= NETLINK_CB(cb
->skb
).portid
;
2820 seq
= cb
->nlh
->nlmsg_seq
;
2822 list_for_each_entry(ha
, &list
->list
, list
) {
2823 if (*idx
< cb
->args
[0])
2826 err
= nlmsg_populate_fdb_fill(skb
, dev
, ha
->addr
, 0,
2828 RTM_NEWNEIGH
, NTF_SELF
,
2839 * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table.
2840 * @nlh: netlink message header
2843 * Default netdevice operation to dump the existing unicast address list.
2844 * Returns number of addresses from list put in skb.
2846 int ndo_dflt_fdb_dump(struct sk_buff
*skb
,
2847 struct netlink_callback
*cb
,
2848 struct net_device
*dev
,
2849 struct net_device
*filter_dev
,
2854 netif_addr_lock_bh(dev
);
2855 err
= nlmsg_populate_fdb(skb
, cb
, dev
, &idx
, &dev
->uc
);
2858 nlmsg_populate_fdb(skb
, cb
, dev
, &idx
, &dev
->mc
);
2860 netif_addr_unlock_bh(dev
);
2863 EXPORT_SYMBOL(ndo_dflt_fdb_dump
);
2865 static int rtnl_fdb_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2867 struct net_device
*dev
;
2868 struct nlattr
*tb
[IFLA_MAX
+1];
2869 struct net_device
*br_dev
= NULL
;
2870 const struct net_device_ops
*ops
= NULL
;
2871 const struct net_device_ops
*cops
= NULL
;
2872 struct ifinfomsg
*ifm
= nlmsg_data(cb
->nlh
);
2873 struct net
*net
= sock_net(skb
->sk
);
2878 if (nlmsg_parse(cb
->nlh
, sizeof(struct ifinfomsg
), tb
, IFLA_MAX
,
2879 ifla_policy
) == 0) {
2880 if (tb
[IFLA_MASTER
])
2881 br_idx
= nla_get_u32(tb
[IFLA_MASTER
]);
2884 brport_idx
= ifm
->ifi_index
;
2887 br_dev
= __dev_get_by_index(net
, br_idx
);
2891 ops
= br_dev
->netdev_ops
;
2894 for_each_netdev(net
, dev
) {
2895 if (brport_idx
&& (dev
->ifindex
!= brport_idx
))
2898 if (!br_idx
) { /* user did not specify a specific bridge */
2899 if (dev
->priv_flags
& IFF_BRIDGE_PORT
) {
2900 br_dev
= netdev_master_upper_dev_get(dev
);
2901 cops
= br_dev
->netdev_ops
;
2905 if (dev
!= br_dev
&&
2906 !(dev
->priv_flags
& IFF_BRIDGE_PORT
))
2909 if (br_dev
!= netdev_master_upper_dev_get(dev
) &&
2910 !(dev
->priv_flags
& IFF_EBRIDGE
))
2916 if (dev
->priv_flags
& IFF_BRIDGE_PORT
) {
2917 if (cops
&& cops
->ndo_fdb_dump
)
2918 idx
= cops
->ndo_fdb_dump(skb
, cb
, br_dev
, dev
,
2922 if (dev
->netdev_ops
->ndo_fdb_dump
)
2923 idx
= dev
->netdev_ops
->ndo_fdb_dump(skb
, cb
, dev
, NULL
,
2926 idx
= ndo_dflt_fdb_dump(skb
, cb
, dev
, NULL
, idx
);
2935 static int brport_nla_put_flag(struct sk_buff
*skb
, u32 flags
, u32 mask
,
2936 unsigned int attrnum
, unsigned int flag
)
2939 return nla_put_u8(skb
, attrnum
, !!(flags
& flag
));
2943 int ndo_dflt_bridge_getlink(struct sk_buff
*skb
, u32 pid
, u32 seq
,
2944 struct net_device
*dev
, u16 mode
,
2945 u32 flags
, u32 mask
, int nlflags
,
2947 int (*vlan_fill
)(struct sk_buff
*skb
,
2948 struct net_device
*dev
,
2951 struct nlmsghdr
*nlh
;
2952 struct ifinfomsg
*ifm
;
2953 struct nlattr
*br_afspec
;
2954 struct nlattr
*protinfo
;
2955 u8 operstate
= netif_running(dev
) ? dev
->operstate
: IF_OPER_DOWN
;
2956 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2959 nlh
= nlmsg_put(skb
, pid
, seq
, RTM_NEWLINK
, sizeof(*ifm
), nlflags
);
2963 ifm
= nlmsg_data(nlh
);
2964 ifm
->ifi_family
= AF_BRIDGE
;
2966 ifm
->ifi_type
= dev
->type
;
2967 ifm
->ifi_index
= dev
->ifindex
;
2968 ifm
->ifi_flags
= dev_get_flags(dev
);
2969 ifm
->ifi_change
= 0;
2972 if (nla_put_string(skb
, IFLA_IFNAME
, dev
->name
) ||
2973 nla_put_u32(skb
, IFLA_MTU
, dev
->mtu
) ||
2974 nla_put_u8(skb
, IFLA_OPERSTATE
, operstate
) ||
2976 nla_put_u32(skb
, IFLA_MASTER
, br_dev
->ifindex
)) ||
2978 nla_put(skb
, IFLA_ADDRESS
, dev
->addr_len
, dev
->dev_addr
)) ||
2979 (dev
->ifindex
!= dev_get_iflink(dev
) &&
2980 nla_put_u32(skb
, IFLA_LINK
, dev_get_iflink(dev
))))
2981 goto nla_put_failure
;
2983 br_afspec
= nla_nest_start(skb
, IFLA_AF_SPEC
);
2985 goto nla_put_failure
;
2987 if (nla_put_u16(skb
, IFLA_BRIDGE_FLAGS
, BRIDGE_FLAGS_SELF
)) {
2988 nla_nest_cancel(skb
, br_afspec
);
2989 goto nla_put_failure
;
2992 if (mode
!= BRIDGE_MODE_UNDEF
) {
2993 if (nla_put_u16(skb
, IFLA_BRIDGE_MODE
, mode
)) {
2994 nla_nest_cancel(skb
, br_afspec
);
2995 goto nla_put_failure
;
2999 err
= vlan_fill(skb
, dev
, filter_mask
);
3001 nla_nest_cancel(skb
, br_afspec
);
3002 goto nla_put_failure
;
3005 nla_nest_end(skb
, br_afspec
);
3007 protinfo
= nla_nest_start(skb
, IFLA_PROTINFO
| NLA_F_NESTED
);
3009 goto nla_put_failure
;
3011 if (brport_nla_put_flag(skb
, flags
, mask
,
3012 IFLA_BRPORT_MODE
, BR_HAIRPIN_MODE
) ||
3013 brport_nla_put_flag(skb
, flags
, mask
,
3014 IFLA_BRPORT_GUARD
, BR_BPDU_GUARD
) ||
3015 brport_nla_put_flag(skb
, flags
, mask
,
3016 IFLA_BRPORT_FAST_LEAVE
,
3017 BR_MULTICAST_FAST_LEAVE
) ||
3018 brport_nla_put_flag(skb
, flags
, mask
,
3019 IFLA_BRPORT_PROTECT
, BR_ROOT_BLOCK
) ||
3020 brport_nla_put_flag(skb
, flags
, mask
,
3021 IFLA_BRPORT_LEARNING
, BR_LEARNING
) ||
3022 brport_nla_put_flag(skb
, flags
, mask
,
3023 IFLA_BRPORT_LEARNING_SYNC
, BR_LEARNING_SYNC
) ||
3024 brport_nla_put_flag(skb
, flags
, mask
,
3025 IFLA_BRPORT_UNICAST_FLOOD
, BR_FLOOD
) ||
3026 brport_nla_put_flag(skb
, flags
, mask
,
3027 IFLA_BRPORT_PROXYARP
, BR_PROXYARP
)) {
3028 nla_nest_cancel(skb
, protinfo
);
3029 goto nla_put_failure
;
3032 nla_nest_end(skb
, protinfo
);
3034 nlmsg_end(skb
, nlh
);
3037 nlmsg_cancel(skb
, nlh
);
3038 return err
? err
: -EMSGSIZE
;
3040 EXPORT_SYMBOL_GPL(ndo_dflt_bridge_getlink
);
3042 static int rtnl_bridge_getlink(struct sk_buff
*skb
, struct netlink_callback
*cb
)
3044 struct net
*net
= sock_net(skb
->sk
);
3045 struct net_device
*dev
;
3047 u32 portid
= NETLINK_CB(cb
->skb
).portid
;
3048 u32 seq
= cb
->nlh
->nlmsg_seq
;
3049 u32 filter_mask
= 0;
3051 if (nlmsg_len(cb
->nlh
) > sizeof(struct ifinfomsg
)) {
3052 struct nlattr
*extfilt
;
3054 extfilt
= nlmsg_find_attr(cb
->nlh
, sizeof(struct ifinfomsg
),
3057 if (nla_len(extfilt
) < sizeof(filter_mask
))
3060 filter_mask
= nla_get_u32(extfilt
);
3065 for_each_netdev_rcu(net
, dev
) {
3066 const struct net_device_ops
*ops
= dev
->netdev_ops
;
3067 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
3069 if (br_dev
&& br_dev
->netdev_ops
->ndo_bridge_getlink
) {
3070 if (idx
>= cb
->args
[0] &&
3071 br_dev
->netdev_ops
->ndo_bridge_getlink(
3072 skb
, portid
, seq
, dev
, filter_mask
,
3078 if (ops
->ndo_bridge_getlink
) {
3079 if (idx
>= cb
->args
[0] &&
3080 ops
->ndo_bridge_getlink(skb
, portid
, seq
, dev
,
3093 static inline size_t bridge_nlmsg_size(void)
3095 return NLMSG_ALIGN(sizeof(struct ifinfomsg
))
3096 + nla_total_size(IFNAMSIZ
) /* IFLA_IFNAME */
3097 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_ADDRESS */
3098 + nla_total_size(sizeof(u32
)) /* IFLA_MASTER */
3099 + nla_total_size(sizeof(u32
)) /* IFLA_MTU */
3100 + nla_total_size(sizeof(u32
)) /* IFLA_LINK */
3101 + nla_total_size(sizeof(u32
)) /* IFLA_OPERSTATE */
3102 + nla_total_size(sizeof(u8
)) /* IFLA_PROTINFO */
3103 + nla_total_size(sizeof(struct nlattr
)) /* IFLA_AF_SPEC */
3104 + nla_total_size(sizeof(u16
)) /* IFLA_BRIDGE_FLAGS */
3105 + nla_total_size(sizeof(u16
)); /* IFLA_BRIDGE_MODE */
3108 static int rtnl_bridge_notify(struct net_device
*dev
)
3110 struct net
*net
= dev_net(dev
);
3111 struct sk_buff
*skb
;
3112 int err
= -EOPNOTSUPP
;
3114 if (!dev
->netdev_ops
->ndo_bridge_getlink
)
3117 skb
= nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC
);
3123 err
= dev
->netdev_ops
->ndo_bridge_getlink(skb
, 0, 0, dev
, 0, 0);
3130 rtnl_notify(skb
, net
, 0, RTNLGRP_LINK
, NULL
, GFP_ATOMIC
);
3133 WARN_ON(err
== -EMSGSIZE
);
3136 rtnl_set_sk_err(net
, RTNLGRP_LINK
, err
);
3140 static int rtnl_bridge_setlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
3142 struct net
*net
= sock_net(skb
->sk
);
3143 struct ifinfomsg
*ifm
;
3144 struct net_device
*dev
;
3145 struct nlattr
*br_spec
, *attr
= NULL
;
3146 int rem
, err
= -EOPNOTSUPP
;
3148 bool have_flags
= false;
3150 if (nlmsg_len(nlh
) < sizeof(*ifm
))
3153 ifm
= nlmsg_data(nlh
);
3154 if (ifm
->ifi_family
!= AF_BRIDGE
)
3155 return -EPFNOSUPPORT
;
3157 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
3159 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
3163 br_spec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
3165 nla_for_each_nested(attr
, br_spec
, rem
) {
3166 if (nla_type(attr
) == IFLA_BRIDGE_FLAGS
) {
3167 if (nla_len(attr
) < sizeof(flags
))
3171 flags
= nla_get_u16(attr
);
3177 if (!flags
|| (flags
& BRIDGE_FLAGS_MASTER
)) {
3178 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
3180 if (!br_dev
|| !br_dev
->netdev_ops
->ndo_bridge_setlink
) {
3185 err
= br_dev
->netdev_ops
->ndo_bridge_setlink(dev
, nlh
, flags
);
3189 flags
&= ~BRIDGE_FLAGS_MASTER
;
3192 if ((flags
& BRIDGE_FLAGS_SELF
)) {
3193 if (!dev
->netdev_ops
->ndo_bridge_setlink
)
3196 err
= dev
->netdev_ops
->ndo_bridge_setlink(dev
, nlh
,
3199 flags
&= ~BRIDGE_FLAGS_SELF
;
3201 /* Generate event to notify upper layer of bridge
3204 err
= rtnl_bridge_notify(dev
);
3209 memcpy(nla_data(attr
), &flags
, sizeof(flags
));
3214 static int rtnl_bridge_dellink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
3216 struct net
*net
= sock_net(skb
->sk
);
3217 struct ifinfomsg
*ifm
;
3218 struct net_device
*dev
;
3219 struct nlattr
*br_spec
, *attr
= NULL
;
3220 int rem
, err
= -EOPNOTSUPP
;
3222 bool have_flags
= false;
3224 if (nlmsg_len(nlh
) < sizeof(*ifm
))
3227 ifm
= nlmsg_data(nlh
);
3228 if (ifm
->ifi_family
!= AF_BRIDGE
)
3229 return -EPFNOSUPPORT
;
3231 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
3233 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
3237 br_spec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
3239 nla_for_each_nested(attr
, br_spec
, rem
) {
3240 if (nla_type(attr
) == IFLA_BRIDGE_FLAGS
) {
3241 if (nla_len(attr
) < sizeof(flags
))
3245 flags
= nla_get_u16(attr
);
3251 if (!flags
|| (flags
& BRIDGE_FLAGS_MASTER
)) {
3252 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
3254 if (!br_dev
|| !br_dev
->netdev_ops
->ndo_bridge_dellink
) {
3259 err
= br_dev
->netdev_ops
->ndo_bridge_dellink(dev
, nlh
, flags
);
3263 flags
&= ~BRIDGE_FLAGS_MASTER
;
3266 if ((flags
& BRIDGE_FLAGS_SELF
)) {
3267 if (!dev
->netdev_ops
->ndo_bridge_dellink
)
3270 err
= dev
->netdev_ops
->ndo_bridge_dellink(dev
, nlh
,
3274 flags
&= ~BRIDGE_FLAGS_SELF
;
3276 /* Generate event to notify upper layer of bridge
3279 err
= rtnl_bridge_notify(dev
);
3284 memcpy(nla_data(attr
), &flags
, sizeof(flags
));
3289 /* Process one rtnetlink message. */
3291 static int rtnetlink_rcv_msg(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
3293 struct net
*net
= sock_net(skb
->sk
);
3294 rtnl_doit_func doit
;
3300 type
= nlh
->nlmsg_type
;
3306 /* All the messages must have at least 1 byte length */
3307 if (nlmsg_len(nlh
) < sizeof(struct rtgenmsg
))
3310 family
= ((struct rtgenmsg
*)nlmsg_data(nlh
))->rtgen_family
;
3314 if (kind
!= 2 && !netlink_net_capable(skb
, CAP_NET_ADMIN
))
3317 if (kind
== 2 && nlh
->nlmsg_flags
&NLM_F_DUMP
) {
3319 rtnl_dumpit_func dumpit
;
3320 rtnl_calcit_func calcit
;
3321 u16 min_dump_alloc
= 0;
3323 dumpit
= rtnl_get_dumpit(family
, type
);
3326 calcit
= rtnl_get_calcit(family
, type
);
3328 min_dump_alloc
= calcit(skb
, nlh
);
3333 struct netlink_dump_control c
= {
3335 .min_dump_alloc
= min_dump_alloc
,
3337 err
= netlink_dump_start(rtnl
, skb
, nlh
, &c
);
3343 doit
= rtnl_get_doit(family
, type
);
3347 return doit(skb
, nlh
);
3350 static void rtnetlink_rcv(struct sk_buff
*skb
)
3353 netlink_rcv_skb(skb
, &rtnetlink_rcv_msg
);
3357 static int rtnetlink_event(struct notifier_block
*this, unsigned long event
, void *ptr
)
3359 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
3365 case NETDEV_POST_INIT
:
3366 case NETDEV_REGISTER
:
3368 case NETDEV_PRE_TYPE_CHANGE
:
3369 case NETDEV_GOING_DOWN
:
3370 case NETDEV_UNREGISTER
:
3371 case NETDEV_UNREGISTER_FINAL
:
3372 case NETDEV_RELEASE
:
3374 case NETDEV_BONDING_INFO
:
3377 rtmsg_ifinfo(RTM_NEWLINK
, dev
, 0, GFP_KERNEL
);
3383 static struct notifier_block rtnetlink_dev_notifier
= {
3384 .notifier_call
= rtnetlink_event
,
3388 static int __net_init
rtnetlink_net_init(struct net
*net
)
3391 struct netlink_kernel_cfg cfg
= {
3392 .groups
= RTNLGRP_MAX
,
3393 .input
= rtnetlink_rcv
,
3394 .cb_mutex
= &rtnl_mutex
,
3395 .flags
= NL_CFG_F_NONROOT_RECV
,
3398 sk
= netlink_kernel_create(net
, NETLINK_ROUTE
, &cfg
);
3405 static void __net_exit
rtnetlink_net_exit(struct net
*net
)
3407 netlink_kernel_release(net
->rtnl
);
3411 static struct pernet_operations rtnetlink_net_ops
= {
3412 .init
= rtnetlink_net_init
,
3413 .exit
= rtnetlink_net_exit
,
3416 void __init
rtnetlink_init(void)
3418 if (register_pernet_subsys(&rtnetlink_net_ops
))
3419 panic("rtnetlink_init: cannot initialize rtnetlink\n");
3421 register_netdevice_notifier(&rtnetlink_dev_notifier
);
3423 rtnl_register(PF_UNSPEC
, RTM_GETLINK
, rtnl_getlink
,
3424 rtnl_dump_ifinfo
, rtnl_calcit
);
3425 rtnl_register(PF_UNSPEC
, RTM_SETLINK
, rtnl_setlink
, NULL
, NULL
);
3426 rtnl_register(PF_UNSPEC
, RTM_NEWLINK
, rtnl_newlink
, NULL
, NULL
);
3427 rtnl_register(PF_UNSPEC
, RTM_DELLINK
, rtnl_dellink
, NULL
, NULL
);
3429 rtnl_register(PF_UNSPEC
, RTM_GETADDR
, NULL
, rtnl_dump_all
, NULL
);
3430 rtnl_register(PF_UNSPEC
, RTM_GETROUTE
, NULL
, rtnl_dump_all
, NULL
);
3432 rtnl_register(PF_BRIDGE
, RTM_NEWNEIGH
, rtnl_fdb_add
, NULL
, NULL
);
3433 rtnl_register(PF_BRIDGE
, RTM_DELNEIGH
, rtnl_fdb_del
, NULL
, NULL
);
3434 rtnl_register(PF_BRIDGE
, RTM_GETNEIGH
, NULL
, rtnl_fdb_dump
, NULL
);
3436 rtnl_register(PF_BRIDGE
, RTM_GETLINK
, NULL
, rtnl_bridge_getlink
, NULL
);
3437 rtnl_register(PF_BRIDGE
, RTM_DELLINK
, rtnl_bridge_dellink
, NULL
, NULL
);
3438 rtnl_register(PF_BRIDGE
, RTM_SETLINK
, rtnl_bridge_setlink
, NULL
, NULL
);