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
))
303 ops
->dellink
= unregister_netdevice_queue
;
305 list_add_tail(&ops
->list
, &link_ops
);
308 EXPORT_SYMBOL_GPL(__rtnl_link_register
);
311 * rtnl_link_register - Register rtnl_link_ops with rtnetlink.
312 * @ops: struct rtnl_link_ops * to register
314 * Returns 0 on success or a negative error code.
316 int rtnl_link_register(struct rtnl_link_ops
*ops
)
321 err
= __rtnl_link_register(ops
);
325 EXPORT_SYMBOL_GPL(rtnl_link_register
);
327 static void __rtnl_kill_links(struct net
*net
, struct rtnl_link_ops
*ops
)
329 struct net_device
*dev
;
330 LIST_HEAD(list_kill
);
332 for_each_netdev(net
, dev
) {
333 if (dev
->rtnl_link_ops
== ops
)
334 ops
->dellink(dev
, &list_kill
);
336 unregister_netdevice_many(&list_kill
);
340 * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
341 * @ops: struct rtnl_link_ops * to unregister
343 * The caller must hold the rtnl_mutex.
345 void __rtnl_link_unregister(struct rtnl_link_ops
*ops
)
350 __rtnl_kill_links(net
, ops
);
352 list_del(&ops
->list
);
354 EXPORT_SYMBOL_GPL(__rtnl_link_unregister
);
357 * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
358 * @ops: struct rtnl_link_ops * to unregister
360 void rtnl_link_unregister(struct rtnl_link_ops
*ops
)
363 __rtnl_link_unregister(ops
);
366 EXPORT_SYMBOL_GPL(rtnl_link_unregister
);
368 static size_t rtnl_link_get_slave_info_data_size(const struct net_device
*dev
)
370 struct net_device
*master_dev
;
371 const struct rtnl_link_ops
*ops
;
373 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
376 ops
= master_dev
->rtnl_link_ops
;
377 if (!ops
->get_slave_size
)
379 /* IFLA_INFO_SLAVE_DATA + nested data */
380 return nla_total_size(sizeof(struct nlattr
)) +
381 ops
->get_slave_size(master_dev
, dev
);
384 static size_t rtnl_link_get_size(const struct net_device
*dev
)
386 const struct rtnl_link_ops
*ops
= dev
->rtnl_link_ops
;
392 size
= nla_total_size(sizeof(struct nlattr
)) + /* IFLA_LINKINFO */
393 nla_total_size(strlen(ops
->kind
) + 1); /* IFLA_INFO_KIND */
396 /* IFLA_INFO_DATA + nested data */
397 size
+= nla_total_size(sizeof(struct nlattr
)) +
400 if (ops
->get_xstats_size
)
401 /* IFLA_INFO_XSTATS */
402 size
+= nla_total_size(ops
->get_xstats_size(dev
));
404 size
+= rtnl_link_get_slave_info_data_size(dev
);
409 static LIST_HEAD(rtnl_af_ops
);
411 static const struct rtnl_af_ops
*rtnl_af_lookup(const int family
)
413 const struct rtnl_af_ops
*ops
;
415 list_for_each_entry(ops
, &rtnl_af_ops
, list
) {
416 if (ops
->family
== family
)
424 * rtnl_af_register - Register rtnl_af_ops with rtnetlink.
425 * @ops: struct rtnl_af_ops * to register
427 * Returns 0 on success or a negative error code.
429 void rtnl_af_register(struct rtnl_af_ops
*ops
)
432 list_add_tail(&ops
->list
, &rtnl_af_ops
);
435 EXPORT_SYMBOL_GPL(rtnl_af_register
);
438 * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
439 * @ops: struct rtnl_af_ops * to unregister
441 * The caller must hold the rtnl_mutex.
443 void __rtnl_af_unregister(struct rtnl_af_ops
*ops
)
445 list_del(&ops
->list
);
447 EXPORT_SYMBOL_GPL(__rtnl_af_unregister
);
450 * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
451 * @ops: struct rtnl_af_ops * to unregister
453 void rtnl_af_unregister(struct rtnl_af_ops
*ops
)
456 __rtnl_af_unregister(ops
);
459 EXPORT_SYMBOL_GPL(rtnl_af_unregister
);
461 static size_t rtnl_link_get_af_size(const struct net_device
*dev
)
463 struct rtnl_af_ops
*af_ops
;
467 size
= nla_total_size(sizeof(struct nlattr
));
469 list_for_each_entry(af_ops
, &rtnl_af_ops
, list
) {
470 if (af_ops
->get_link_af_size
) {
471 /* AF_* + nested data */
472 size
+= nla_total_size(sizeof(struct nlattr
)) +
473 af_ops
->get_link_af_size(dev
);
480 static bool rtnl_have_link_slave_info(const struct net_device
*dev
)
482 struct net_device
*master_dev
;
484 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
485 if (master_dev
&& master_dev
->rtnl_link_ops
)
490 static int rtnl_link_slave_info_fill(struct sk_buff
*skb
,
491 const struct net_device
*dev
)
493 struct net_device
*master_dev
;
494 const struct rtnl_link_ops
*ops
;
495 struct nlattr
*slave_data
;
498 master_dev
= netdev_master_upper_dev_get((struct net_device
*) dev
);
501 ops
= master_dev
->rtnl_link_ops
;
504 if (nla_put_string(skb
, IFLA_INFO_SLAVE_KIND
, ops
->kind
) < 0)
506 if (ops
->fill_slave_info
) {
507 slave_data
= nla_nest_start(skb
, IFLA_INFO_SLAVE_DATA
);
510 err
= ops
->fill_slave_info(skb
, master_dev
, dev
);
512 goto err_cancel_slave_data
;
513 nla_nest_end(skb
, slave_data
);
517 err_cancel_slave_data
:
518 nla_nest_cancel(skb
, slave_data
);
522 static int rtnl_link_info_fill(struct sk_buff
*skb
,
523 const struct net_device
*dev
)
525 const struct rtnl_link_ops
*ops
= dev
->rtnl_link_ops
;
531 if (nla_put_string(skb
, IFLA_INFO_KIND
, ops
->kind
) < 0)
533 if (ops
->fill_xstats
) {
534 err
= ops
->fill_xstats(skb
, dev
);
538 if (ops
->fill_info
) {
539 data
= nla_nest_start(skb
, IFLA_INFO_DATA
);
542 err
= ops
->fill_info(skb
, dev
);
544 goto err_cancel_data
;
545 nla_nest_end(skb
, data
);
550 nla_nest_cancel(skb
, data
);
554 static int rtnl_link_fill(struct sk_buff
*skb
, const struct net_device
*dev
)
556 struct nlattr
*linkinfo
;
559 linkinfo
= nla_nest_start(skb
, IFLA_LINKINFO
);
560 if (linkinfo
== NULL
)
563 err
= rtnl_link_info_fill(skb
, dev
);
565 goto err_cancel_link
;
567 err
= rtnl_link_slave_info_fill(skb
, dev
);
569 goto err_cancel_link
;
571 nla_nest_end(skb
, linkinfo
);
575 nla_nest_cancel(skb
, linkinfo
);
580 int rtnetlink_send(struct sk_buff
*skb
, struct net
*net
, u32 pid
, unsigned int group
, int echo
)
582 struct sock
*rtnl
= net
->rtnl
;
585 NETLINK_CB(skb
).dst_group
= group
;
587 atomic_inc(&skb
->users
);
588 netlink_broadcast(rtnl
, skb
, pid
, group
, GFP_KERNEL
);
590 err
= netlink_unicast(rtnl
, skb
, pid
, MSG_DONTWAIT
);
594 int rtnl_unicast(struct sk_buff
*skb
, struct net
*net
, u32 pid
)
596 struct sock
*rtnl
= net
->rtnl
;
598 return nlmsg_unicast(rtnl
, skb
, pid
);
600 EXPORT_SYMBOL(rtnl_unicast
);
602 void rtnl_notify(struct sk_buff
*skb
, struct net
*net
, u32 pid
, u32 group
,
603 struct nlmsghdr
*nlh
, gfp_t flags
)
605 struct sock
*rtnl
= net
->rtnl
;
609 report
= nlmsg_report(nlh
);
611 nlmsg_notify(rtnl
, skb
, pid
, group
, report
, flags
);
613 EXPORT_SYMBOL(rtnl_notify
);
615 void rtnl_set_sk_err(struct net
*net
, u32 group
, int error
)
617 struct sock
*rtnl
= net
->rtnl
;
619 netlink_set_err(rtnl
, 0, group
, error
);
621 EXPORT_SYMBOL(rtnl_set_sk_err
);
623 int rtnetlink_put_metrics(struct sk_buff
*skb
, u32
*metrics
)
628 mx
= nla_nest_start(skb
, RTA_METRICS
);
632 for (i
= 0; i
< RTAX_MAX
; i
++) {
635 if (nla_put_u32(skb
, i
+1, metrics
[i
]))
636 goto nla_put_failure
;
641 nla_nest_cancel(skb
, mx
);
645 return nla_nest_end(skb
, mx
);
648 nla_nest_cancel(skb
, mx
);
651 EXPORT_SYMBOL(rtnetlink_put_metrics
);
653 int rtnl_put_cacheinfo(struct sk_buff
*skb
, struct dst_entry
*dst
, u32 id
,
654 long expires
, u32 error
)
656 struct rta_cacheinfo ci
= {
657 .rta_lastuse
= jiffies_delta_to_clock_t(jiffies
- dst
->lastuse
),
658 .rta_used
= dst
->__use
,
659 .rta_clntref
= atomic_read(&(dst
->__refcnt
)),
667 clock
= jiffies_to_clock_t(abs(expires
));
668 clock
= min_t(unsigned long, clock
, INT_MAX
);
669 ci
.rta_expires
= (expires
> 0) ? clock
: -clock
;
671 return nla_put(skb
, RTA_CACHEINFO
, sizeof(ci
), &ci
);
673 EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo
);
675 static void set_operstate(struct net_device
*dev
, unsigned char transition
)
677 unsigned char operstate
= dev
->operstate
;
679 switch (transition
) {
681 if ((operstate
== IF_OPER_DORMANT
||
682 operstate
== IF_OPER_UNKNOWN
) &&
684 operstate
= IF_OPER_UP
;
687 case IF_OPER_DORMANT
:
688 if (operstate
== IF_OPER_UP
||
689 operstate
== IF_OPER_UNKNOWN
)
690 operstate
= IF_OPER_DORMANT
;
694 if (dev
->operstate
!= operstate
) {
695 write_lock_bh(&dev_base_lock
);
696 dev
->operstate
= operstate
;
697 write_unlock_bh(&dev_base_lock
);
698 netdev_state_change(dev
);
702 static unsigned int rtnl_dev_get_flags(const struct net_device
*dev
)
704 return (dev
->flags
& ~(IFF_PROMISC
| IFF_ALLMULTI
)) |
705 (dev
->gflags
& (IFF_PROMISC
| IFF_ALLMULTI
));
708 static unsigned int rtnl_dev_combine_flags(const struct net_device
*dev
,
709 const struct ifinfomsg
*ifm
)
711 unsigned int flags
= ifm
->ifi_flags
;
713 /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
715 flags
= (flags
& ifm
->ifi_change
) |
716 (rtnl_dev_get_flags(dev
) & ~ifm
->ifi_change
);
721 static void copy_rtnl_link_stats(struct rtnl_link_stats
*a
,
722 const struct rtnl_link_stats64
*b
)
724 a
->rx_packets
= b
->rx_packets
;
725 a
->tx_packets
= b
->tx_packets
;
726 a
->rx_bytes
= b
->rx_bytes
;
727 a
->tx_bytes
= b
->tx_bytes
;
728 a
->rx_errors
= b
->rx_errors
;
729 a
->tx_errors
= b
->tx_errors
;
730 a
->rx_dropped
= b
->rx_dropped
;
731 a
->tx_dropped
= b
->tx_dropped
;
733 a
->multicast
= b
->multicast
;
734 a
->collisions
= b
->collisions
;
736 a
->rx_length_errors
= b
->rx_length_errors
;
737 a
->rx_over_errors
= b
->rx_over_errors
;
738 a
->rx_crc_errors
= b
->rx_crc_errors
;
739 a
->rx_frame_errors
= b
->rx_frame_errors
;
740 a
->rx_fifo_errors
= b
->rx_fifo_errors
;
741 a
->rx_missed_errors
= b
->rx_missed_errors
;
743 a
->tx_aborted_errors
= b
->tx_aborted_errors
;
744 a
->tx_carrier_errors
= b
->tx_carrier_errors
;
745 a
->tx_fifo_errors
= b
->tx_fifo_errors
;
746 a
->tx_heartbeat_errors
= b
->tx_heartbeat_errors
;
747 a
->tx_window_errors
= b
->tx_window_errors
;
749 a
->rx_compressed
= b
->rx_compressed
;
750 a
->tx_compressed
= b
->tx_compressed
;
753 static void copy_rtnl_link_stats64(void *v
, const struct rtnl_link_stats64
*b
)
755 memcpy(v
, b
, sizeof(*b
));
759 static inline int rtnl_vfinfo_size(const struct net_device
*dev
,
762 if (dev
->dev
.parent
&& dev_is_pci(dev
->dev
.parent
) &&
763 (ext_filter_mask
& RTEXT_FILTER_VF
)) {
764 int num_vfs
= dev_num_vf(dev
->dev
.parent
);
765 size_t size
= nla_total_size(sizeof(struct nlattr
));
766 size
+= nla_total_size(num_vfs
* sizeof(struct nlattr
));
768 (nla_total_size(sizeof(struct ifla_vf_mac
)) +
769 nla_total_size(sizeof(struct ifla_vf_vlan
)) +
770 nla_total_size(sizeof(struct ifla_vf_tx_rate
)) +
771 nla_total_size(sizeof(struct ifla_vf_spoofchk
)));
777 static size_t rtnl_port_size(const struct net_device
*dev
)
779 size_t port_size
= nla_total_size(4) /* PORT_VF */
780 + nla_total_size(PORT_PROFILE_MAX
) /* PORT_PROFILE */
781 + nla_total_size(sizeof(struct ifla_port_vsi
))
783 + nla_total_size(PORT_UUID_MAX
) /* PORT_INSTANCE_UUID */
784 + nla_total_size(PORT_UUID_MAX
) /* PORT_HOST_UUID */
785 + nla_total_size(1) /* PROT_VDP_REQUEST */
786 + nla_total_size(2); /* PORT_VDP_RESPONSE */
787 size_t vf_ports_size
= nla_total_size(sizeof(struct nlattr
));
788 size_t vf_port_size
= nla_total_size(sizeof(struct nlattr
))
790 size_t port_self_size
= nla_total_size(sizeof(struct nlattr
))
793 if (!dev
->netdev_ops
->ndo_get_vf_port
|| !dev
->dev
.parent
)
795 if (dev_num_vf(dev
->dev
.parent
))
796 return port_self_size
+ vf_ports_size
+
797 vf_port_size
* dev_num_vf(dev
->dev
.parent
);
799 return port_self_size
;
802 static noinline
size_t if_nlmsg_size(const struct net_device
*dev
,
805 return NLMSG_ALIGN(sizeof(struct ifinfomsg
))
806 + nla_total_size(IFNAMSIZ
) /* IFLA_IFNAME */
807 + nla_total_size(IFALIASZ
) /* IFLA_IFALIAS */
808 + nla_total_size(IFNAMSIZ
) /* IFLA_QDISC */
809 + nla_total_size(sizeof(struct rtnl_link_ifmap
))
810 + nla_total_size(sizeof(struct rtnl_link_stats
))
811 + nla_total_size(sizeof(struct rtnl_link_stats64
))
812 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_ADDRESS */
813 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_BROADCAST */
814 + nla_total_size(4) /* IFLA_TXQLEN */
815 + nla_total_size(4) /* IFLA_WEIGHT */
816 + nla_total_size(4) /* IFLA_MTU */
817 + nla_total_size(4) /* IFLA_LINK */
818 + nla_total_size(4) /* IFLA_MASTER */
819 + nla_total_size(1) /* IFLA_CARRIER */
820 + nla_total_size(4) /* IFLA_PROMISCUITY */
821 + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */
822 + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */
823 + nla_total_size(1) /* IFLA_OPERSTATE */
824 + nla_total_size(1) /* IFLA_LINKMODE */
825 + nla_total_size(ext_filter_mask
826 & RTEXT_FILTER_VF
? 4 : 0) /* IFLA_NUM_VF */
827 + rtnl_vfinfo_size(dev
, ext_filter_mask
) /* IFLA_VFINFO_LIST */
828 + rtnl_port_size(dev
) /* IFLA_VF_PORTS + IFLA_PORT_SELF */
829 + rtnl_link_get_size(dev
) /* IFLA_LINKINFO */
830 + rtnl_link_get_af_size(dev
) /* IFLA_AF_SPEC */
831 + nla_total_size(MAX_PHYS_PORT_ID_LEN
); /* IFLA_PHYS_PORT_ID */
834 static int rtnl_vf_ports_fill(struct sk_buff
*skb
, struct net_device
*dev
)
836 struct nlattr
*vf_ports
;
837 struct nlattr
*vf_port
;
841 vf_ports
= nla_nest_start(skb
, IFLA_VF_PORTS
);
845 for (vf
= 0; vf
< dev_num_vf(dev
->dev
.parent
); vf
++) {
846 vf_port
= nla_nest_start(skb
, IFLA_VF_PORT
);
848 goto nla_put_failure
;
849 if (nla_put_u32(skb
, IFLA_PORT_VF
, vf
))
850 goto nla_put_failure
;
851 err
= dev
->netdev_ops
->ndo_get_vf_port(dev
, vf
, skb
);
852 if (err
== -EMSGSIZE
)
853 goto nla_put_failure
;
855 nla_nest_cancel(skb
, vf_port
);
858 nla_nest_end(skb
, vf_port
);
861 nla_nest_end(skb
, vf_ports
);
866 nla_nest_cancel(skb
, vf_ports
);
870 static int rtnl_port_self_fill(struct sk_buff
*skb
, struct net_device
*dev
)
872 struct nlattr
*port_self
;
875 port_self
= nla_nest_start(skb
, IFLA_PORT_SELF
);
879 err
= dev
->netdev_ops
->ndo_get_vf_port(dev
, PORT_SELF_VF
, skb
);
881 nla_nest_cancel(skb
, port_self
);
882 return (err
== -EMSGSIZE
) ? err
: 0;
885 nla_nest_end(skb
, port_self
);
890 static int rtnl_port_fill(struct sk_buff
*skb
, struct net_device
*dev
)
894 if (!dev
->netdev_ops
->ndo_get_vf_port
|| !dev
->dev
.parent
)
897 err
= rtnl_port_self_fill(skb
, dev
);
901 if (dev_num_vf(dev
->dev
.parent
)) {
902 err
= rtnl_vf_ports_fill(skb
, dev
);
910 static int rtnl_phys_port_id_fill(struct sk_buff
*skb
, struct net_device
*dev
)
913 struct netdev_phys_port_id ppid
;
915 err
= dev_get_phys_port_id(dev
, &ppid
);
917 if (err
== -EOPNOTSUPP
)
922 if (nla_put(skb
, IFLA_PHYS_PORT_ID
, ppid
.id_len
, ppid
.id
))
928 static int rtnl_fill_ifinfo(struct sk_buff
*skb
, struct net_device
*dev
,
929 int type
, u32 pid
, u32 seq
, u32 change
,
930 unsigned int flags
, u32 ext_filter_mask
)
932 struct ifinfomsg
*ifm
;
933 struct nlmsghdr
*nlh
;
934 struct rtnl_link_stats64 temp
;
935 const struct rtnl_link_stats64
*stats
;
936 struct nlattr
*attr
, *af_spec
;
937 struct rtnl_af_ops
*af_ops
;
938 struct net_device
*upper_dev
= netdev_master_upper_dev_get(dev
);
941 nlh
= nlmsg_put(skb
, pid
, seq
, type
, sizeof(*ifm
), flags
);
945 ifm
= nlmsg_data(nlh
);
946 ifm
->ifi_family
= AF_UNSPEC
;
948 ifm
->ifi_type
= dev
->type
;
949 ifm
->ifi_index
= dev
->ifindex
;
950 ifm
->ifi_flags
= dev_get_flags(dev
);
951 ifm
->ifi_change
= change
;
953 if (nla_put_string(skb
, IFLA_IFNAME
, dev
->name
) ||
954 nla_put_u32(skb
, IFLA_TXQLEN
, dev
->tx_queue_len
) ||
955 nla_put_u8(skb
, IFLA_OPERSTATE
,
956 netif_running(dev
) ? dev
->operstate
: IF_OPER_DOWN
) ||
957 nla_put_u8(skb
, IFLA_LINKMODE
, dev
->link_mode
) ||
958 nla_put_u32(skb
, IFLA_MTU
, dev
->mtu
) ||
959 nla_put_u32(skb
, IFLA_GROUP
, dev
->group
) ||
960 nla_put_u32(skb
, IFLA_PROMISCUITY
, dev
->promiscuity
) ||
961 nla_put_u32(skb
, IFLA_NUM_TX_QUEUES
, dev
->num_tx_queues
) ||
963 nla_put_u32(skb
, IFLA_NUM_RX_QUEUES
, dev
->num_rx_queues
) ||
965 (dev
->ifindex
!= dev
->iflink
&&
966 nla_put_u32(skb
, IFLA_LINK
, dev
->iflink
)) ||
968 nla_put_u32(skb
, IFLA_MASTER
, upper_dev
->ifindex
)) ||
969 nla_put_u8(skb
, IFLA_CARRIER
, netif_carrier_ok(dev
)) ||
971 nla_put_string(skb
, IFLA_QDISC
, dev
->qdisc
->ops
->id
)) ||
973 nla_put_string(skb
, IFLA_IFALIAS
, dev
->ifalias
)))
974 goto nla_put_failure
;
977 struct rtnl_link_ifmap map
= {
978 .mem_start
= dev
->mem_start
,
979 .mem_end
= dev
->mem_end
,
980 .base_addr
= dev
->base_addr
,
983 .port
= dev
->if_port
,
985 if (nla_put(skb
, IFLA_MAP
, sizeof(map
), &map
))
986 goto nla_put_failure
;
990 if (nla_put(skb
, IFLA_ADDRESS
, dev
->addr_len
, dev
->dev_addr
) ||
991 nla_put(skb
, IFLA_BROADCAST
, dev
->addr_len
, dev
->broadcast
))
992 goto nla_put_failure
;
995 if (rtnl_phys_port_id_fill(skb
, dev
))
996 goto nla_put_failure
;
998 attr
= nla_reserve(skb
, IFLA_STATS
,
999 sizeof(struct rtnl_link_stats
));
1001 goto nla_put_failure
;
1003 stats
= dev_get_stats(dev
, &temp
);
1004 copy_rtnl_link_stats(nla_data(attr
), stats
);
1006 attr
= nla_reserve(skb
, IFLA_STATS64
,
1007 sizeof(struct rtnl_link_stats64
));
1009 goto nla_put_failure
;
1010 copy_rtnl_link_stats64(nla_data(attr
), stats
);
1012 if (dev
->dev
.parent
&& (ext_filter_mask
& RTEXT_FILTER_VF
) &&
1013 nla_put_u32(skb
, IFLA_NUM_VF
, dev_num_vf(dev
->dev
.parent
)))
1014 goto nla_put_failure
;
1016 if (dev
->netdev_ops
->ndo_get_vf_config
&& dev
->dev
.parent
1017 && (ext_filter_mask
& RTEXT_FILTER_VF
)) {
1020 struct nlattr
*vfinfo
, *vf
;
1021 int num_vfs
= dev_num_vf(dev
->dev
.parent
);
1023 vfinfo
= nla_nest_start(skb
, IFLA_VFINFO_LIST
);
1025 goto nla_put_failure
;
1026 for (i
= 0; i
< num_vfs
; i
++) {
1027 struct ifla_vf_info ivi
;
1028 struct ifla_vf_mac vf_mac
;
1029 struct ifla_vf_vlan vf_vlan
;
1030 struct ifla_vf_tx_rate vf_tx_rate
;
1031 struct ifla_vf_spoofchk vf_spoofchk
;
1032 struct ifla_vf_link_state vf_linkstate
;
1035 * Not all SR-IOV capable drivers support the
1036 * spoofcheck query. Preset to -1 so the user
1037 * space tool can detect that the driver didn't
1041 memset(ivi
.mac
, 0, sizeof(ivi
.mac
));
1042 /* The default value for VF link state is "auto"
1043 * IFLA_VF_LINK_STATE_AUTO which equals zero
1046 if (dev
->netdev_ops
->ndo_get_vf_config(dev
, i
, &ivi
))
1052 vf_linkstate
.vf
= ivi
.vf
;
1054 memcpy(vf_mac
.mac
, ivi
.mac
, sizeof(ivi
.mac
));
1055 vf_vlan
.vlan
= ivi
.vlan
;
1056 vf_vlan
.qos
= ivi
.qos
;
1057 vf_tx_rate
.rate
= ivi
.tx_rate
;
1058 vf_spoofchk
.setting
= ivi
.spoofchk
;
1059 vf_linkstate
.link_state
= ivi
.linkstate
;
1060 vf
= nla_nest_start(skb
, IFLA_VF_INFO
);
1062 nla_nest_cancel(skb
, vfinfo
);
1063 goto nla_put_failure
;
1065 if (nla_put(skb
, IFLA_VF_MAC
, sizeof(vf_mac
), &vf_mac
) ||
1066 nla_put(skb
, IFLA_VF_VLAN
, sizeof(vf_vlan
), &vf_vlan
) ||
1067 nla_put(skb
, IFLA_VF_TX_RATE
, sizeof(vf_tx_rate
),
1069 nla_put(skb
, IFLA_VF_SPOOFCHK
, sizeof(vf_spoofchk
),
1071 nla_put(skb
, IFLA_VF_LINK_STATE
, sizeof(vf_linkstate
),
1073 goto nla_put_failure
;
1074 nla_nest_end(skb
, vf
);
1076 nla_nest_end(skb
, vfinfo
);
1079 if (rtnl_port_fill(skb
, dev
))
1080 goto nla_put_failure
;
1082 if (dev
->rtnl_link_ops
|| rtnl_have_link_slave_info(dev
)) {
1083 if (rtnl_link_fill(skb
, dev
) < 0)
1084 goto nla_put_failure
;
1087 if (!(af_spec
= nla_nest_start(skb
, IFLA_AF_SPEC
)))
1088 goto nla_put_failure
;
1090 list_for_each_entry(af_ops
, &rtnl_af_ops
, list
) {
1091 if (af_ops
->fill_link_af
) {
1095 if (!(af
= nla_nest_start(skb
, af_ops
->family
)))
1096 goto nla_put_failure
;
1098 err
= af_ops
->fill_link_af(skb
, dev
);
1101 * Caller may return ENODATA to indicate that there
1102 * was no data to be dumped. This is not an error, it
1103 * means we should trim the attribute header and
1106 if (err
== -ENODATA
)
1107 nla_nest_cancel(skb
, af
);
1109 goto nla_put_failure
;
1111 nla_nest_end(skb
, af
);
1115 nla_nest_end(skb
, af_spec
);
1117 return nlmsg_end(skb
, nlh
);
1120 nlmsg_cancel(skb
, nlh
);
1124 static int rtnl_dump_ifinfo(struct sk_buff
*skb
, struct netlink_callback
*cb
)
1126 struct net
*net
= sock_net(skb
->sk
);
1129 struct net_device
*dev
;
1130 struct hlist_head
*head
;
1131 struct nlattr
*tb
[IFLA_MAX
+1];
1132 u32 ext_filter_mask
= 0;
1135 s_idx
= cb
->args
[1];
1138 cb
->seq
= net
->dev_base_seq
;
1140 if (nlmsg_parse(cb
->nlh
, sizeof(struct ifinfomsg
), tb
, IFLA_MAX
,
1141 ifla_policy
) >= 0) {
1143 if (tb
[IFLA_EXT_MASK
])
1144 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
1147 for (h
= s_h
; h
< NETDEV_HASHENTRIES
; h
++, s_idx
= 0) {
1149 head
= &net
->dev_index_head
[h
];
1150 hlist_for_each_entry_rcu(dev
, head
, index_hlist
) {
1153 if (rtnl_fill_ifinfo(skb
, dev
, RTM_NEWLINK
,
1154 NETLINK_CB(cb
->skb
).portid
,
1155 cb
->nlh
->nlmsg_seq
, 0,
1157 ext_filter_mask
) <= 0)
1160 nl_dump_check_consistent(cb
, nlmsg_hdr(skb
));
1173 const struct nla_policy ifla_policy
[IFLA_MAX
+1] = {
1174 [IFLA_IFNAME
] = { .type
= NLA_STRING
, .len
= IFNAMSIZ
-1 },
1175 [IFLA_ADDRESS
] = { .type
= NLA_BINARY
, .len
= MAX_ADDR_LEN
},
1176 [IFLA_BROADCAST
] = { .type
= NLA_BINARY
, .len
= MAX_ADDR_LEN
},
1177 [IFLA_MAP
] = { .len
= sizeof(struct rtnl_link_ifmap
) },
1178 [IFLA_MTU
] = { .type
= NLA_U32
},
1179 [IFLA_LINK
] = { .type
= NLA_U32
},
1180 [IFLA_MASTER
] = { .type
= NLA_U32
},
1181 [IFLA_CARRIER
] = { .type
= NLA_U8
},
1182 [IFLA_TXQLEN
] = { .type
= NLA_U32
},
1183 [IFLA_WEIGHT
] = { .type
= NLA_U32
},
1184 [IFLA_OPERSTATE
] = { .type
= NLA_U8
},
1185 [IFLA_LINKMODE
] = { .type
= NLA_U8
},
1186 [IFLA_LINKINFO
] = { .type
= NLA_NESTED
},
1187 [IFLA_NET_NS_PID
] = { .type
= NLA_U32
},
1188 [IFLA_NET_NS_FD
] = { .type
= NLA_U32
},
1189 [IFLA_IFALIAS
] = { .type
= NLA_STRING
, .len
= IFALIASZ
-1 },
1190 [IFLA_VFINFO_LIST
] = {. type
= NLA_NESTED
},
1191 [IFLA_VF_PORTS
] = { .type
= NLA_NESTED
},
1192 [IFLA_PORT_SELF
] = { .type
= NLA_NESTED
},
1193 [IFLA_AF_SPEC
] = { .type
= NLA_NESTED
},
1194 [IFLA_EXT_MASK
] = { .type
= NLA_U32
},
1195 [IFLA_PROMISCUITY
] = { .type
= NLA_U32
},
1196 [IFLA_NUM_TX_QUEUES
] = { .type
= NLA_U32
},
1197 [IFLA_NUM_RX_QUEUES
] = { .type
= NLA_U32
},
1198 [IFLA_PHYS_PORT_ID
] = { .type
= NLA_BINARY
, .len
= MAX_PHYS_PORT_ID_LEN
},
1200 EXPORT_SYMBOL(ifla_policy
);
1202 static const struct nla_policy ifla_info_policy
[IFLA_INFO_MAX
+1] = {
1203 [IFLA_INFO_KIND
] = { .type
= NLA_STRING
},
1204 [IFLA_INFO_DATA
] = { .type
= NLA_NESTED
},
1205 [IFLA_INFO_SLAVE_KIND
] = { .type
= NLA_STRING
},
1206 [IFLA_INFO_SLAVE_DATA
] = { .type
= NLA_NESTED
},
1209 static const struct nla_policy ifla_vfinfo_policy
[IFLA_VF_INFO_MAX
+1] = {
1210 [IFLA_VF_INFO
] = { .type
= NLA_NESTED
},
1213 static const struct nla_policy ifla_vf_policy
[IFLA_VF_MAX
+1] = {
1214 [IFLA_VF_MAC
] = { .type
= NLA_BINARY
,
1215 .len
= sizeof(struct ifla_vf_mac
) },
1216 [IFLA_VF_VLAN
] = { .type
= NLA_BINARY
,
1217 .len
= sizeof(struct ifla_vf_vlan
) },
1218 [IFLA_VF_TX_RATE
] = { .type
= NLA_BINARY
,
1219 .len
= sizeof(struct ifla_vf_tx_rate
) },
1220 [IFLA_VF_SPOOFCHK
] = { .type
= NLA_BINARY
,
1221 .len
= sizeof(struct ifla_vf_spoofchk
) },
1224 static const struct nla_policy ifla_port_policy
[IFLA_PORT_MAX
+1] = {
1225 [IFLA_PORT_VF
] = { .type
= NLA_U32
},
1226 [IFLA_PORT_PROFILE
] = { .type
= NLA_STRING
,
1227 .len
= PORT_PROFILE_MAX
},
1228 [IFLA_PORT_VSI_TYPE
] = { .type
= NLA_BINARY
,
1229 .len
= sizeof(struct ifla_port_vsi
)},
1230 [IFLA_PORT_INSTANCE_UUID
] = { .type
= NLA_BINARY
,
1231 .len
= PORT_UUID_MAX
},
1232 [IFLA_PORT_HOST_UUID
] = { .type
= NLA_STRING
,
1233 .len
= PORT_UUID_MAX
},
1234 [IFLA_PORT_REQUEST
] = { .type
= NLA_U8
, },
1235 [IFLA_PORT_RESPONSE
] = { .type
= NLA_U16
, },
1238 struct net
*rtnl_link_get_net(struct net
*src_net
, struct nlattr
*tb
[])
1241 /* Examine the link attributes and figure out which
1242 * network namespace we are talking about.
1244 if (tb
[IFLA_NET_NS_PID
])
1245 net
= get_net_ns_by_pid(nla_get_u32(tb
[IFLA_NET_NS_PID
]));
1246 else if (tb
[IFLA_NET_NS_FD
])
1247 net
= get_net_ns_by_fd(nla_get_u32(tb
[IFLA_NET_NS_FD
]));
1249 net
= get_net(src_net
);
1252 EXPORT_SYMBOL(rtnl_link_get_net
);
1254 static int validate_linkmsg(struct net_device
*dev
, struct nlattr
*tb
[])
1257 if (tb
[IFLA_ADDRESS
] &&
1258 nla_len(tb
[IFLA_ADDRESS
]) < dev
->addr_len
)
1261 if (tb
[IFLA_BROADCAST
] &&
1262 nla_len(tb
[IFLA_BROADCAST
]) < dev
->addr_len
)
1266 if (tb
[IFLA_AF_SPEC
]) {
1270 nla_for_each_nested(af
, tb
[IFLA_AF_SPEC
], rem
) {
1271 const struct rtnl_af_ops
*af_ops
;
1273 if (!(af_ops
= rtnl_af_lookup(nla_type(af
))))
1274 return -EAFNOSUPPORT
;
1276 if (!af_ops
->set_link_af
)
1279 if (af_ops
->validate_link_af
) {
1280 err
= af_ops
->validate_link_af(dev
, af
);
1290 static int do_setvfinfo(struct net_device
*dev
, struct nlattr
*attr
)
1292 int rem
, err
= -EINVAL
;
1294 const struct net_device_ops
*ops
= dev
->netdev_ops
;
1296 nla_for_each_nested(vf
, attr
, rem
) {
1297 switch (nla_type(vf
)) {
1299 struct ifla_vf_mac
*ivm
;
1302 if (ops
->ndo_set_vf_mac
)
1303 err
= ops
->ndo_set_vf_mac(dev
, ivm
->vf
,
1307 case IFLA_VF_VLAN
: {
1308 struct ifla_vf_vlan
*ivv
;
1311 if (ops
->ndo_set_vf_vlan
)
1312 err
= ops
->ndo_set_vf_vlan(dev
, ivv
->vf
,
1317 case IFLA_VF_TX_RATE
: {
1318 struct ifla_vf_tx_rate
*ivt
;
1321 if (ops
->ndo_set_vf_tx_rate
)
1322 err
= ops
->ndo_set_vf_tx_rate(dev
, ivt
->vf
,
1326 case IFLA_VF_SPOOFCHK
: {
1327 struct ifla_vf_spoofchk
*ivs
;
1330 if (ops
->ndo_set_vf_spoofchk
)
1331 err
= ops
->ndo_set_vf_spoofchk(dev
, ivs
->vf
,
1335 case IFLA_VF_LINK_STATE
: {
1336 struct ifla_vf_link_state
*ivl
;
1339 if (ops
->ndo_set_vf_link_state
)
1340 err
= ops
->ndo_set_vf_link_state(dev
, ivl
->vf
,
1354 static int do_set_master(struct net_device
*dev
, int ifindex
)
1356 struct net_device
*upper_dev
= netdev_master_upper_dev_get(dev
);
1357 const struct net_device_ops
*ops
;
1361 if (upper_dev
->ifindex
== ifindex
)
1363 ops
= upper_dev
->netdev_ops
;
1364 if (ops
->ndo_del_slave
) {
1365 err
= ops
->ndo_del_slave(upper_dev
, dev
);
1374 upper_dev
= __dev_get_by_index(dev_net(dev
), ifindex
);
1377 ops
= upper_dev
->netdev_ops
;
1378 if (ops
->ndo_add_slave
) {
1379 err
= ops
->ndo_add_slave(upper_dev
, dev
);
1389 static int do_setlink(struct net_device
*dev
, struct ifinfomsg
*ifm
,
1390 struct nlattr
**tb
, char *ifname
, int modified
)
1392 const struct net_device_ops
*ops
= dev
->netdev_ops
;
1395 if (tb
[IFLA_NET_NS_PID
] || tb
[IFLA_NET_NS_FD
]) {
1396 struct net
*net
= rtnl_link_get_net(dev_net(dev
), tb
);
1401 if (!ns_capable(net
->user_ns
, CAP_NET_ADMIN
)) {
1405 err
= dev_change_net_namespace(dev
, net
, ifname
);
1413 struct rtnl_link_ifmap
*u_map
;
1416 if (!ops
->ndo_set_config
) {
1421 if (!netif_device_present(dev
)) {
1426 u_map
= nla_data(tb
[IFLA_MAP
]);
1427 k_map
.mem_start
= (unsigned long) u_map
->mem_start
;
1428 k_map
.mem_end
= (unsigned long) u_map
->mem_end
;
1429 k_map
.base_addr
= (unsigned short) u_map
->base_addr
;
1430 k_map
.irq
= (unsigned char) u_map
->irq
;
1431 k_map
.dma
= (unsigned char) u_map
->dma
;
1432 k_map
.port
= (unsigned char) u_map
->port
;
1434 err
= ops
->ndo_set_config(dev
, &k_map
);
1441 if (tb
[IFLA_ADDRESS
]) {
1442 struct sockaddr
*sa
;
1445 len
= sizeof(sa_family_t
) + dev
->addr_len
;
1446 sa
= kmalloc(len
, GFP_KERNEL
);
1451 sa
->sa_family
= dev
->type
;
1452 memcpy(sa
->sa_data
, nla_data(tb
[IFLA_ADDRESS
]),
1454 err
= dev_set_mac_address(dev
, sa
);
1462 err
= dev_set_mtu(dev
, nla_get_u32(tb
[IFLA_MTU
]));
1468 if (tb
[IFLA_GROUP
]) {
1469 dev_set_group(dev
, nla_get_u32(tb
[IFLA_GROUP
]));
1474 * Interface selected by interface index but interface
1475 * name provided implies that a name change has been
1478 if (ifm
->ifi_index
> 0 && ifname
[0]) {
1479 err
= dev_change_name(dev
, ifname
);
1485 if (tb
[IFLA_IFALIAS
]) {
1486 err
= dev_set_alias(dev
, nla_data(tb
[IFLA_IFALIAS
]),
1487 nla_len(tb
[IFLA_IFALIAS
]));
1493 if (tb
[IFLA_BROADCAST
]) {
1494 nla_memcpy(dev
->broadcast
, tb
[IFLA_BROADCAST
], dev
->addr_len
);
1495 call_netdevice_notifiers(NETDEV_CHANGEADDR
, dev
);
1498 if (ifm
->ifi_flags
|| ifm
->ifi_change
) {
1499 err
= dev_change_flags(dev
, rtnl_dev_combine_flags(dev
, ifm
));
1504 if (tb
[IFLA_MASTER
]) {
1505 err
= do_set_master(dev
, nla_get_u32(tb
[IFLA_MASTER
]));
1511 if (tb
[IFLA_CARRIER
]) {
1512 err
= dev_change_carrier(dev
, nla_get_u8(tb
[IFLA_CARRIER
]));
1518 if (tb
[IFLA_TXQLEN
])
1519 dev
->tx_queue_len
= nla_get_u32(tb
[IFLA_TXQLEN
]);
1521 if (tb
[IFLA_OPERSTATE
])
1522 set_operstate(dev
, nla_get_u8(tb
[IFLA_OPERSTATE
]));
1524 if (tb
[IFLA_LINKMODE
]) {
1525 write_lock_bh(&dev_base_lock
);
1526 dev
->link_mode
= nla_get_u8(tb
[IFLA_LINKMODE
]);
1527 write_unlock_bh(&dev_base_lock
);
1530 if (tb
[IFLA_VFINFO_LIST
]) {
1531 struct nlattr
*attr
;
1533 nla_for_each_nested(attr
, tb
[IFLA_VFINFO_LIST
], rem
) {
1534 if (nla_type(attr
) != IFLA_VF_INFO
) {
1538 err
= do_setvfinfo(dev
, attr
);
1546 if (tb
[IFLA_VF_PORTS
]) {
1547 struct nlattr
*port
[IFLA_PORT_MAX
+1];
1548 struct nlattr
*attr
;
1553 if (!ops
->ndo_set_vf_port
)
1556 nla_for_each_nested(attr
, tb
[IFLA_VF_PORTS
], rem
) {
1557 if (nla_type(attr
) != IFLA_VF_PORT
)
1559 err
= nla_parse_nested(port
, IFLA_PORT_MAX
,
1560 attr
, ifla_port_policy
);
1563 if (!port
[IFLA_PORT_VF
]) {
1567 vf
= nla_get_u32(port
[IFLA_PORT_VF
]);
1568 err
= ops
->ndo_set_vf_port(dev
, vf
, port
);
1576 if (tb
[IFLA_PORT_SELF
]) {
1577 struct nlattr
*port
[IFLA_PORT_MAX
+1];
1579 err
= nla_parse_nested(port
, IFLA_PORT_MAX
,
1580 tb
[IFLA_PORT_SELF
], ifla_port_policy
);
1585 if (ops
->ndo_set_vf_port
)
1586 err
= ops
->ndo_set_vf_port(dev
, PORT_SELF_VF
, port
);
1592 if (tb
[IFLA_AF_SPEC
]) {
1596 nla_for_each_nested(af
, tb
[IFLA_AF_SPEC
], rem
) {
1597 const struct rtnl_af_ops
*af_ops
;
1599 if (!(af_ops
= rtnl_af_lookup(nla_type(af
))))
1602 err
= af_ops
->set_link_af(dev
, af
);
1612 if (err
< 0 && modified
)
1613 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",
1619 static int rtnl_setlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
1621 struct net
*net
= sock_net(skb
->sk
);
1622 struct ifinfomsg
*ifm
;
1623 struct net_device
*dev
;
1625 struct nlattr
*tb
[IFLA_MAX
+1];
1626 char ifname
[IFNAMSIZ
];
1628 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
1632 if (tb
[IFLA_IFNAME
])
1633 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
1638 ifm
= nlmsg_data(nlh
);
1639 if (ifm
->ifi_index
> 0)
1640 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
1641 else if (tb
[IFLA_IFNAME
])
1642 dev
= __dev_get_by_name(net
, ifname
);
1651 err
= validate_linkmsg(dev
, tb
);
1655 err
= do_setlink(dev
, ifm
, tb
, ifname
, 0);
1660 static int rtnl_dellink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
1662 struct net
*net
= sock_net(skb
->sk
);
1663 const struct rtnl_link_ops
*ops
;
1664 struct net_device
*dev
;
1665 struct ifinfomsg
*ifm
;
1666 char ifname
[IFNAMSIZ
];
1667 struct nlattr
*tb
[IFLA_MAX
+1];
1669 LIST_HEAD(list_kill
);
1671 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
1675 if (tb
[IFLA_IFNAME
])
1676 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
1678 ifm
= nlmsg_data(nlh
);
1679 if (ifm
->ifi_index
> 0)
1680 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
1681 else if (tb
[IFLA_IFNAME
])
1682 dev
= __dev_get_by_name(net
, ifname
);
1689 ops
= dev
->rtnl_link_ops
;
1693 ops
->dellink(dev
, &list_kill
);
1694 unregister_netdevice_many(&list_kill
);
1695 list_del(&list_kill
);
1699 int rtnl_configure_link(struct net_device
*dev
, const struct ifinfomsg
*ifm
)
1701 unsigned int old_flags
;
1704 old_flags
= dev
->flags
;
1705 if (ifm
&& (ifm
->ifi_flags
|| ifm
->ifi_change
)) {
1706 err
= __dev_change_flags(dev
, rtnl_dev_combine_flags(dev
, ifm
));
1711 dev
->rtnl_link_state
= RTNL_LINK_INITIALIZED
;
1713 __dev_notify_flags(dev
, old_flags
, ~0U);
1716 EXPORT_SYMBOL(rtnl_configure_link
);
1718 struct net_device
*rtnl_create_link(struct net
*net
,
1719 char *ifname
, const struct rtnl_link_ops
*ops
, struct nlattr
*tb
[])
1722 struct net_device
*dev
;
1723 unsigned int num_tx_queues
= 1;
1724 unsigned int num_rx_queues
= 1;
1726 if (tb
[IFLA_NUM_TX_QUEUES
])
1727 num_tx_queues
= nla_get_u32(tb
[IFLA_NUM_TX_QUEUES
]);
1728 else if (ops
->get_num_tx_queues
)
1729 num_tx_queues
= ops
->get_num_tx_queues();
1731 if (tb
[IFLA_NUM_RX_QUEUES
])
1732 num_rx_queues
= nla_get_u32(tb
[IFLA_NUM_RX_QUEUES
]);
1733 else if (ops
->get_num_rx_queues
)
1734 num_rx_queues
= ops
->get_num_rx_queues();
1737 dev
= alloc_netdev_mqs(ops
->priv_size
, ifname
, ops
->setup
,
1738 num_tx_queues
, num_rx_queues
);
1742 dev_net_set(dev
, net
);
1743 dev
->rtnl_link_ops
= ops
;
1744 dev
->rtnl_link_state
= RTNL_LINK_INITIALIZING
;
1747 dev
->mtu
= nla_get_u32(tb
[IFLA_MTU
]);
1748 if (tb
[IFLA_ADDRESS
]) {
1749 memcpy(dev
->dev_addr
, nla_data(tb
[IFLA_ADDRESS
]),
1750 nla_len(tb
[IFLA_ADDRESS
]));
1751 dev
->addr_assign_type
= NET_ADDR_SET
;
1753 if (tb
[IFLA_BROADCAST
])
1754 memcpy(dev
->broadcast
, nla_data(tb
[IFLA_BROADCAST
]),
1755 nla_len(tb
[IFLA_BROADCAST
]));
1756 if (tb
[IFLA_TXQLEN
])
1757 dev
->tx_queue_len
= nla_get_u32(tb
[IFLA_TXQLEN
]);
1758 if (tb
[IFLA_OPERSTATE
])
1759 set_operstate(dev
, nla_get_u8(tb
[IFLA_OPERSTATE
]));
1760 if (tb
[IFLA_LINKMODE
])
1761 dev
->link_mode
= nla_get_u8(tb
[IFLA_LINKMODE
]);
1763 dev_set_group(dev
, nla_get_u32(tb
[IFLA_GROUP
]));
1768 return ERR_PTR(err
);
1770 EXPORT_SYMBOL(rtnl_create_link
);
1772 static int rtnl_group_changelink(struct net
*net
, int group
,
1773 struct ifinfomsg
*ifm
,
1776 struct net_device
*dev
;
1779 for_each_netdev(net
, dev
) {
1780 if (dev
->group
== group
) {
1781 err
= do_setlink(dev
, ifm
, tb
, NULL
, 0);
1790 static int rtnl_newlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
1792 struct net
*net
= sock_net(skb
->sk
);
1793 const struct rtnl_link_ops
*ops
;
1794 const struct rtnl_link_ops
*m_ops
= NULL
;
1795 struct net_device
*dev
;
1796 struct net_device
*master_dev
= NULL
;
1797 struct ifinfomsg
*ifm
;
1798 char kind
[MODULE_NAME_LEN
];
1799 char ifname
[IFNAMSIZ
];
1800 struct nlattr
*tb
[IFLA_MAX
+1];
1801 struct nlattr
*linkinfo
[IFLA_INFO_MAX
+1];
1804 #ifdef CONFIG_MODULES
1807 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
1811 if (tb
[IFLA_IFNAME
])
1812 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
1816 ifm
= nlmsg_data(nlh
);
1817 if (ifm
->ifi_index
> 0)
1818 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
1821 dev
= __dev_get_by_name(net
, ifname
);
1827 master_dev
= netdev_master_upper_dev_get(dev
);
1829 m_ops
= master_dev
->rtnl_link_ops
;
1832 err
= validate_linkmsg(dev
, tb
);
1836 if (tb
[IFLA_LINKINFO
]) {
1837 err
= nla_parse_nested(linkinfo
, IFLA_INFO_MAX
,
1838 tb
[IFLA_LINKINFO
], ifla_info_policy
);
1842 memset(linkinfo
, 0, sizeof(linkinfo
));
1844 if (linkinfo
[IFLA_INFO_KIND
]) {
1845 nla_strlcpy(kind
, linkinfo
[IFLA_INFO_KIND
], sizeof(kind
));
1846 ops
= rtnl_link_ops_get(kind
);
1853 struct nlattr
*attr
[ops
? ops
->maxtype
+ 1 : 0];
1854 struct nlattr
*slave_attr
[m_ops
? m_ops
->slave_maxtype
+ 1 : 0];
1855 struct nlattr
**data
= NULL
;
1856 struct nlattr
**slave_data
= NULL
;
1857 struct net
*dest_net
;
1860 if (ops
->maxtype
&& linkinfo
[IFLA_INFO_DATA
]) {
1861 err
= nla_parse_nested(attr
, ops
->maxtype
,
1862 linkinfo
[IFLA_INFO_DATA
],
1868 if (ops
->validate
) {
1869 err
= ops
->validate(tb
, data
);
1876 if (m_ops
->slave_maxtype
&&
1877 linkinfo
[IFLA_INFO_SLAVE_DATA
]) {
1878 err
= nla_parse_nested(slave_attr
,
1879 m_ops
->slave_maxtype
,
1880 linkinfo
[IFLA_INFO_SLAVE_DATA
],
1881 m_ops
->slave_policy
);
1884 slave_data
= slave_attr
;
1886 if (m_ops
->slave_validate
) {
1887 err
= m_ops
->slave_validate(tb
, slave_data
);
1896 if (nlh
->nlmsg_flags
& NLM_F_EXCL
)
1898 if (nlh
->nlmsg_flags
& NLM_F_REPLACE
)
1901 if (linkinfo
[IFLA_INFO_DATA
]) {
1902 if (!ops
|| ops
!= dev
->rtnl_link_ops
||
1906 err
= ops
->changelink(dev
, tb
, data
);
1912 if (linkinfo
[IFLA_INFO_SLAVE_DATA
]) {
1913 if (!m_ops
|| !m_ops
->slave_changelink
)
1916 err
= m_ops
->slave_changelink(master_dev
, dev
,
1923 return do_setlink(dev
, ifm
, tb
, ifname
, modified
);
1926 if (!(nlh
->nlmsg_flags
& NLM_F_CREATE
)) {
1927 if (ifm
->ifi_index
== 0 && tb
[IFLA_GROUP
])
1928 return rtnl_group_changelink(net
,
1929 nla_get_u32(tb
[IFLA_GROUP
]),
1934 if (tb
[IFLA_MAP
] || tb
[IFLA_MASTER
] || tb
[IFLA_PROTINFO
])
1938 #ifdef CONFIG_MODULES
1941 request_module("rtnl-link-%s", kind
);
1943 ops
= rtnl_link_ops_get(kind
);
1952 snprintf(ifname
, IFNAMSIZ
, "%s%%d", ops
->kind
);
1954 dest_net
= rtnl_link_get_net(net
, tb
);
1955 if (IS_ERR(dest_net
))
1956 return PTR_ERR(dest_net
);
1958 dev
= rtnl_create_link(dest_net
, ifname
, ops
, tb
);
1964 dev
->ifindex
= ifm
->ifi_index
;
1967 err
= ops
->newlink(net
, dev
, tb
, data
);
1969 err
= register_netdevice(dev
);
1976 err
= rtnl_configure_link(dev
, ifm
);
1978 unregister_netdevice(dev
);
1985 static int rtnl_getlink(struct sk_buff
*skb
, struct nlmsghdr
* nlh
)
1987 struct net
*net
= sock_net(skb
->sk
);
1988 struct ifinfomsg
*ifm
;
1989 char ifname
[IFNAMSIZ
];
1990 struct nlattr
*tb
[IFLA_MAX
+1];
1991 struct net_device
*dev
= NULL
;
1992 struct sk_buff
*nskb
;
1994 u32 ext_filter_mask
= 0;
1996 err
= nlmsg_parse(nlh
, sizeof(*ifm
), tb
, IFLA_MAX
, ifla_policy
);
2000 if (tb
[IFLA_IFNAME
])
2001 nla_strlcpy(ifname
, tb
[IFLA_IFNAME
], IFNAMSIZ
);
2003 if (tb
[IFLA_EXT_MASK
])
2004 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
2006 ifm
= nlmsg_data(nlh
);
2007 if (ifm
->ifi_index
> 0)
2008 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2009 else if (tb
[IFLA_IFNAME
])
2010 dev
= __dev_get_by_name(net
, ifname
);
2017 nskb
= nlmsg_new(if_nlmsg_size(dev
, ext_filter_mask
), GFP_KERNEL
);
2021 err
= rtnl_fill_ifinfo(nskb
, dev
, RTM_NEWLINK
, NETLINK_CB(skb
).portid
,
2022 nlh
->nlmsg_seq
, 0, 0, ext_filter_mask
);
2024 /* -EMSGSIZE implies BUG in if_nlmsg_size */
2025 WARN_ON(err
== -EMSGSIZE
);
2028 err
= rtnl_unicast(nskb
, net
, NETLINK_CB(skb
).portid
);
2033 static u16
rtnl_calcit(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2035 struct net
*net
= sock_net(skb
->sk
);
2036 struct net_device
*dev
;
2037 struct nlattr
*tb
[IFLA_MAX
+1];
2038 u32 ext_filter_mask
= 0;
2039 u16 min_ifinfo_dump_size
= 0;
2041 if (nlmsg_parse(nlh
, sizeof(struct ifinfomsg
), tb
, IFLA_MAX
,
2042 ifla_policy
) >= 0) {
2043 if (tb
[IFLA_EXT_MASK
])
2044 ext_filter_mask
= nla_get_u32(tb
[IFLA_EXT_MASK
]);
2047 if (!ext_filter_mask
)
2048 return NLMSG_GOODSIZE
;
2050 * traverse the list of net devices and compute the minimum
2051 * buffer size based upon the filter mask.
2053 list_for_each_entry(dev
, &net
->dev_base_head
, dev_list
) {
2054 min_ifinfo_dump_size
= max_t(u16
, min_ifinfo_dump_size
,
2059 return min_ifinfo_dump_size
;
2062 static int rtnl_dump_all(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2065 int s_idx
= cb
->family
;
2069 for (idx
= 1; idx
<= RTNL_FAMILY_MAX
; idx
++) {
2070 int type
= cb
->nlh
->nlmsg_type
-RTM_BASE
;
2071 if (idx
< s_idx
|| idx
== PF_PACKET
)
2073 if (rtnl_msg_handlers
[idx
] == NULL
||
2074 rtnl_msg_handlers
[idx
][type
].dumpit
== NULL
)
2077 memset(&cb
->args
[0], 0, sizeof(cb
->args
));
2081 if (rtnl_msg_handlers
[idx
][type
].dumpit(skb
, cb
))
2089 void rtmsg_ifinfo(int type
, struct net_device
*dev
, unsigned int change
,
2092 struct net
*net
= dev_net(dev
);
2093 struct sk_buff
*skb
;
2095 size_t if_info_size
;
2097 skb
= nlmsg_new((if_info_size
= if_nlmsg_size(dev
, 0)), flags
);
2101 err
= rtnl_fill_ifinfo(skb
, dev
, type
, 0, 0, change
, 0, 0);
2103 /* -EMSGSIZE implies BUG in if_nlmsg_size() */
2104 WARN_ON(err
== -EMSGSIZE
);
2108 rtnl_notify(skb
, net
, 0, RTNLGRP_LINK
, NULL
, flags
);
2112 rtnl_set_sk_err(net
, RTNLGRP_LINK
, err
);
2114 EXPORT_SYMBOL(rtmsg_ifinfo
);
2116 static int nlmsg_populate_fdb_fill(struct sk_buff
*skb
,
2117 struct net_device
*dev
,
2118 u8
*addr
, u32 pid
, u32 seq
,
2119 int type
, unsigned int flags
)
2121 struct nlmsghdr
*nlh
;
2124 nlh
= nlmsg_put(skb
, pid
, seq
, type
, sizeof(*ndm
), NLM_F_MULTI
);
2128 ndm
= nlmsg_data(nlh
);
2129 ndm
->ndm_family
= AF_BRIDGE
;
2132 ndm
->ndm_flags
= flags
;
2134 ndm
->ndm_ifindex
= dev
->ifindex
;
2135 ndm
->ndm_state
= NUD_PERMANENT
;
2137 if (nla_put(skb
, NDA_LLADDR
, ETH_ALEN
, addr
))
2138 goto nla_put_failure
;
2140 return nlmsg_end(skb
, nlh
);
2143 nlmsg_cancel(skb
, nlh
);
2147 static inline size_t rtnl_fdb_nlmsg_size(void)
2149 return NLMSG_ALIGN(sizeof(struct ndmsg
)) + nla_total_size(ETH_ALEN
);
2152 static void rtnl_fdb_notify(struct net_device
*dev
, u8
*addr
, int type
)
2154 struct net
*net
= dev_net(dev
);
2155 struct sk_buff
*skb
;
2158 skb
= nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC
);
2162 err
= nlmsg_populate_fdb_fill(skb
, dev
, addr
, 0, 0, type
, NTF_SELF
);
2168 rtnl_notify(skb
, net
, 0, RTNLGRP_NEIGH
, NULL
, GFP_ATOMIC
);
2171 rtnl_set_sk_err(net
, RTNLGRP_NEIGH
, err
);
2175 * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry
2177 int ndo_dflt_fdb_add(struct ndmsg
*ndm
,
2178 struct nlattr
*tb
[],
2179 struct net_device
*dev
,
2180 const unsigned char *addr
,
2185 /* If aging addresses are supported device will need to
2186 * implement its own handler for this.
2188 if (ndm
->ndm_state
&& !(ndm
->ndm_state
& NUD_PERMANENT
)) {
2189 pr_info("%s: FDB only supports static addresses\n", dev
->name
);
2193 if (is_unicast_ether_addr(addr
) || is_link_local_ether_addr(addr
))
2194 err
= dev_uc_add_excl(dev
, addr
);
2195 else if (is_multicast_ether_addr(addr
))
2196 err
= dev_mc_add_excl(dev
, addr
);
2198 /* Only return duplicate errors if NLM_F_EXCL is set */
2199 if (err
== -EEXIST
&& !(flags
& NLM_F_EXCL
))
2204 EXPORT_SYMBOL(ndo_dflt_fdb_add
);
2206 static int rtnl_fdb_add(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2208 struct net
*net
= sock_net(skb
->sk
);
2210 struct nlattr
*tb
[NDA_MAX
+1];
2211 struct net_device
*dev
;
2215 err
= nlmsg_parse(nlh
, sizeof(*ndm
), tb
, NDA_MAX
, NULL
);
2219 ndm
= nlmsg_data(nlh
);
2220 if (ndm
->ndm_ifindex
== 0) {
2221 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n");
2225 dev
= __dev_get_by_index(net
, ndm
->ndm_ifindex
);
2227 pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n");
2231 if (!tb
[NDA_LLADDR
] || nla_len(tb
[NDA_LLADDR
]) != ETH_ALEN
) {
2232 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n");
2236 addr
= nla_data(tb
[NDA_LLADDR
]);
2240 /* Support fdb on master device the net/bridge default case */
2241 if ((!ndm
->ndm_flags
|| ndm
->ndm_flags
& NTF_MASTER
) &&
2242 (dev
->priv_flags
& IFF_BRIDGE_PORT
)) {
2243 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2244 const struct net_device_ops
*ops
= br_dev
->netdev_ops
;
2246 err
= ops
->ndo_fdb_add(ndm
, tb
, dev
, addr
, nlh
->nlmsg_flags
);
2250 ndm
->ndm_flags
&= ~NTF_MASTER
;
2253 /* Embedded bridge, macvlan, and any other device support */
2254 if ((ndm
->ndm_flags
& NTF_SELF
)) {
2255 if (dev
->netdev_ops
->ndo_fdb_add
)
2256 err
= dev
->netdev_ops
->ndo_fdb_add(ndm
, tb
, dev
, addr
,
2259 err
= ndo_dflt_fdb_add(ndm
, tb
, dev
, addr
,
2263 rtnl_fdb_notify(dev
, addr
, RTM_NEWNEIGH
);
2264 ndm
->ndm_flags
&= ~NTF_SELF
;
2272 * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry
2274 int ndo_dflt_fdb_del(struct ndmsg
*ndm
,
2275 struct nlattr
*tb
[],
2276 struct net_device
*dev
,
2277 const unsigned char *addr
)
2279 int err
= -EOPNOTSUPP
;
2281 /* If aging addresses are supported device will need to
2282 * implement its own handler for this.
2284 if (!(ndm
->ndm_state
& NUD_PERMANENT
)) {
2285 pr_info("%s: FDB only supports static addresses\n", dev
->name
);
2289 if (is_unicast_ether_addr(addr
) || is_link_local_ether_addr(addr
))
2290 err
= dev_uc_del(dev
, addr
);
2291 else if (is_multicast_ether_addr(addr
))
2292 err
= dev_mc_del(dev
, addr
);
2298 EXPORT_SYMBOL(ndo_dflt_fdb_del
);
2300 static int rtnl_fdb_del(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2302 struct net
*net
= sock_net(skb
->sk
);
2304 struct nlattr
*tb
[NDA_MAX
+1];
2305 struct net_device
*dev
;
2309 if (!capable(CAP_NET_ADMIN
))
2312 err
= nlmsg_parse(nlh
, sizeof(*ndm
), tb
, NDA_MAX
, NULL
);
2316 ndm
= nlmsg_data(nlh
);
2317 if (ndm
->ndm_ifindex
== 0) {
2318 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n");
2322 dev
= __dev_get_by_index(net
, ndm
->ndm_ifindex
);
2324 pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n");
2328 if (!tb
[NDA_LLADDR
] || nla_len(tb
[NDA_LLADDR
]) != ETH_ALEN
) {
2329 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n");
2333 addr
= nla_data(tb
[NDA_LLADDR
]);
2337 /* Support fdb on master device the net/bridge default case */
2338 if ((!ndm
->ndm_flags
|| ndm
->ndm_flags
& NTF_MASTER
) &&
2339 (dev
->priv_flags
& IFF_BRIDGE_PORT
)) {
2340 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2341 const struct net_device_ops
*ops
= br_dev
->netdev_ops
;
2343 if (ops
->ndo_fdb_del
)
2344 err
= ops
->ndo_fdb_del(ndm
, tb
, dev
, addr
);
2349 ndm
->ndm_flags
&= ~NTF_MASTER
;
2352 /* Embedded bridge, macvlan, and any other device support */
2353 if (ndm
->ndm_flags
& NTF_SELF
) {
2354 if (dev
->netdev_ops
->ndo_fdb_del
)
2355 err
= dev
->netdev_ops
->ndo_fdb_del(ndm
, tb
, dev
, addr
);
2357 err
= ndo_dflt_fdb_del(ndm
, tb
, dev
, addr
);
2360 rtnl_fdb_notify(dev
, addr
, RTM_DELNEIGH
);
2361 ndm
->ndm_flags
&= ~NTF_SELF
;
2368 static int nlmsg_populate_fdb(struct sk_buff
*skb
,
2369 struct netlink_callback
*cb
,
2370 struct net_device
*dev
,
2372 struct netdev_hw_addr_list
*list
)
2374 struct netdev_hw_addr
*ha
;
2378 portid
= NETLINK_CB(cb
->skb
).portid
;
2379 seq
= cb
->nlh
->nlmsg_seq
;
2381 list_for_each_entry(ha
, &list
->list
, list
) {
2382 if (*idx
< cb
->args
[0])
2385 err
= nlmsg_populate_fdb_fill(skb
, dev
, ha
->addr
,
2387 RTM_NEWNEIGH
, NTF_SELF
);
2397 * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table.
2398 * @nlh: netlink message header
2401 * Default netdevice operation to dump the existing unicast address list.
2402 * Returns number of addresses from list put in skb.
2404 int ndo_dflt_fdb_dump(struct sk_buff
*skb
,
2405 struct netlink_callback
*cb
,
2406 struct net_device
*dev
,
2411 netif_addr_lock_bh(dev
);
2412 err
= nlmsg_populate_fdb(skb
, cb
, dev
, &idx
, &dev
->uc
);
2415 nlmsg_populate_fdb(skb
, cb
, dev
, &idx
, &dev
->mc
);
2417 netif_addr_unlock_bh(dev
);
2420 EXPORT_SYMBOL(ndo_dflt_fdb_dump
);
2422 static int rtnl_fdb_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2425 struct net
*net
= sock_net(skb
->sk
);
2426 struct net_device
*dev
;
2429 for_each_netdev_rcu(net
, dev
) {
2430 if (dev
->priv_flags
& IFF_BRIDGE_PORT
) {
2431 struct net_device
*br_dev
;
2432 const struct net_device_ops
*ops
;
2434 br_dev
= netdev_master_upper_dev_get(dev
);
2435 ops
= br_dev
->netdev_ops
;
2436 if (ops
->ndo_fdb_dump
)
2437 idx
= ops
->ndo_fdb_dump(skb
, cb
, dev
, idx
);
2440 if (dev
->netdev_ops
->ndo_fdb_dump
)
2441 idx
= dev
->netdev_ops
->ndo_fdb_dump(skb
, cb
, dev
, idx
);
2443 idx
= ndo_dflt_fdb_dump(skb
, cb
, dev
, idx
);
2451 int ndo_dflt_bridge_getlink(struct sk_buff
*skb
, u32 pid
, u32 seq
,
2452 struct net_device
*dev
, u16 mode
)
2454 struct nlmsghdr
*nlh
;
2455 struct ifinfomsg
*ifm
;
2456 struct nlattr
*br_afspec
;
2457 u8 operstate
= netif_running(dev
) ? dev
->operstate
: IF_OPER_DOWN
;
2458 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2460 nlh
= nlmsg_put(skb
, pid
, seq
, RTM_NEWLINK
, sizeof(*ifm
), NLM_F_MULTI
);
2464 ifm
= nlmsg_data(nlh
);
2465 ifm
->ifi_family
= AF_BRIDGE
;
2467 ifm
->ifi_type
= dev
->type
;
2468 ifm
->ifi_index
= dev
->ifindex
;
2469 ifm
->ifi_flags
= dev_get_flags(dev
);
2470 ifm
->ifi_change
= 0;
2473 if (nla_put_string(skb
, IFLA_IFNAME
, dev
->name
) ||
2474 nla_put_u32(skb
, IFLA_MTU
, dev
->mtu
) ||
2475 nla_put_u8(skb
, IFLA_OPERSTATE
, operstate
) ||
2477 nla_put_u32(skb
, IFLA_MASTER
, br_dev
->ifindex
)) ||
2479 nla_put(skb
, IFLA_ADDRESS
, dev
->addr_len
, dev
->dev_addr
)) ||
2480 (dev
->ifindex
!= dev
->iflink
&&
2481 nla_put_u32(skb
, IFLA_LINK
, dev
->iflink
)))
2482 goto nla_put_failure
;
2484 br_afspec
= nla_nest_start(skb
, IFLA_AF_SPEC
);
2486 goto nla_put_failure
;
2488 if (nla_put_u16(skb
, IFLA_BRIDGE_FLAGS
, BRIDGE_FLAGS_SELF
) ||
2489 nla_put_u16(skb
, IFLA_BRIDGE_MODE
, mode
)) {
2490 nla_nest_cancel(skb
, br_afspec
);
2491 goto nla_put_failure
;
2493 nla_nest_end(skb
, br_afspec
);
2495 return nlmsg_end(skb
, nlh
);
2497 nlmsg_cancel(skb
, nlh
);
2500 EXPORT_SYMBOL(ndo_dflt_bridge_getlink
);
2502 static int rtnl_bridge_getlink(struct sk_buff
*skb
, struct netlink_callback
*cb
)
2504 struct net
*net
= sock_net(skb
->sk
);
2505 struct net_device
*dev
;
2507 u32 portid
= NETLINK_CB(cb
->skb
).portid
;
2508 u32 seq
= cb
->nlh
->nlmsg_seq
;
2509 struct nlattr
*extfilt
;
2510 u32 filter_mask
= 0;
2512 extfilt
= nlmsg_find_attr(cb
->nlh
, sizeof(struct ifinfomsg
),
2515 filter_mask
= nla_get_u32(extfilt
);
2518 for_each_netdev_rcu(net
, dev
) {
2519 const struct net_device_ops
*ops
= dev
->netdev_ops
;
2520 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2522 if (br_dev
&& br_dev
->netdev_ops
->ndo_bridge_getlink
) {
2523 if (idx
>= cb
->args
[0] &&
2524 br_dev
->netdev_ops
->ndo_bridge_getlink(
2525 skb
, portid
, seq
, dev
, filter_mask
) < 0)
2530 if (ops
->ndo_bridge_getlink
) {
2531 if (idx
>= cb
->args
[0] &&
2532 ops
->ndo_bridge_getlink(skb
, portid
, seq
, dev
,
2544 static inline size_t bridge_nlmsg_size(void)
2546 return NLMSG_ALIGN(sizeof(struct ifinfomsg
))
2547 + nla_total_size(IFNAMSIZ
) /* IFLA_IFNAME */
2548 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_ADDRESS */
2549 + nla_total_size(sizeof(u32
)) /* IFLA_MASTER */
2550 + nla_total_size(sizeof(u32
)) /* IFLA_MTU */
2551 + nla_total_size(sizeof(u32
)) /* IFLA_LINK */
2552 + nla_total_size(sizeof(u32
)) /* IFLA_OPERSTATE */
2553 + nla_total_size(sizeof(u8
)) /* IFLA_PROTINFO */
2554 + nla_total_size(sizeof(struct nlattr
)) /* IFLA_AF_SPEC */
2555 + nla_total_size(sizeof(u16
)) /* IFLA_BRIDGE_FLAGS */
2556 + nla_total_size(sizeof(u16
)); /* IFLA_BRIDGE_MODE */
2559 static int rtnl_bridge_notify(struct net_device
*dev
, u16 flags
)
2561 struct net
*net
= dev_net(dev
);
2562 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2563 struct sk_buff
*skb
;
2564 int err
= -EOPNOTSUPP
;
2566 skb
= nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC
);
2572 if ((!flags
|| (flags
& BRIDGE_FLAGS_MASTER
)) &&
2573 br_dev
&& br_dev
->netdev_ops
->ndo_bridge_getlink
) {
2574 err
= br_dev
->netdev_ops
->ndo_bridge_getlink(skb
, 0, 0, dev
, 0);
2579 if ((flags
& BRIDGE_FLAGS_SELF
) &&
2580 dev
->netdev_ops
->ndo_bridge_getlink
) {
2581 err
= dev
->netdev_ops
->ndo_bridge_getlink(skb
, 0, 0, dev
, 0);
2586 rtnl_notify(skb
, net
, 0, RTNLGRP_LINK
, NULL
, GFP_ATOMIC
);
2589 WARN_ON(err
== -EMSGSIZE
);
2591 rtnl_set_sk_err(net
, RTNLGRP_LINK
, err
);
2595 static int rtnl_bridge_setlink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2597 struct net
*net
= sock_net(skb
->sk
);
2598 struct ifinfomsg
*ifm
;
2599 struct net_device
*dev
;
2600 struct nlattr
*br_spec
, *attr
= NULL
;
2601 int rem
, err
= -EOPNOTSUPP
;
2602 u16 oflags
, flags
= 0;
2603 bool have_flags
= false;
2605 if (nlmsg_len(nlh
) < sizeof(*ifm
))
2608 ifm
= nlmsg_data(nlh
);
2609 if (ifm
->ifi_family
!= AF_BRIDGE
)
2610 return -EPFNOSUPPORT
;
2612 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2614 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
2618 br_spec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
2620 nla_for_each_nested(attr
, br_spec
, rem
) {
2621 if (nla_type(attr
) == IFLA_BRIDGE_FLAGS
) {
2623 flags
= nla_get_u16(attr
);
2631 if (!flags
|| (flags
& BRIDGE_FLAGS_MASTER
)) {
2632 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2634 if (!br_dev
|| !br_dev
->netdev_ops
->ndo_bridge_setlink
) {
2639 err
= br_dev
->netdev_ops
->ndo_bridge_setlink(dev
, nlh
);
2643 flags
&= ~BRIDGE_FLAGS_MASTER
;
2646 if ((flags
& BRIDGE_FLAGS_SELF
)) {
2647 if (!dev
->netdev_ops
->ndo_bridge_setlink
)
2650 err
= dev
->netdev_ops
->ndo_bridge_setlink(dev
, nlh
);
2653 flags
&= ~BRIDGE_FLAGS_SELF
;
2657 memcpy(nla_data(attr
), &flags
, sizeof(flags
));
2658 /* Generate event to notify upper layer of bridge change */
2660 err
= rtnl_bridge_notify(dev
, oflags
);
2665 static int rtnl_bridge_dellink(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2667 struct net
*net
= sock_net(skb
->sk
);
2668 struct ifinfomsg
*ifm
;
2669 struct net_device
*dev
;
2670 struct nlattr
*br_spec
, *attr
= NULL
;
2671 int rem
, err
= -EOPNOTSUPP
;
2672 u16 oflags
, flags
= 0;
2673 bool have_flags
= false;
2675 if (nlmsg_len(nlh
) < sizeof(*ifm
))
2678 ifm
= nlmsg_data(nlh
);
2679 if (ifm
->ifi_family
!= AF_BRIDGE
)
2680 return -EPFNOSUPPORT
;
2682 dev
= __dev_get_by_index(net
, ifm
->ifi_index
);
2684 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
2688 br_spec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
2690 nla_for_each_nested(attr
, br_spec
, rem
) {
2691 if (nla_type(attr
) == IFLA_BRIDGE_FLAGS
) {
2693 flags
= nla_get_u16(attr
);
2701 if (!flags
|| (flags
& BRIDGE_FLAGS_MASTER
)) {
2702 struct net_device
*br_dev
= netdev_master_upper_dev_get(dev
);
2704 if (!br_dev
|| !br_dev
->netdev_ops
->ndo_bridge_dellink
) {
2709 err
= br_dev
->netdev_ops
->ndo_bridge_dellink(dev
, nlh
);
2713 flags
&= ~BRIDGE_FLAGS_MASTER
;
2716 if ((flags
& BRIDGE_FLAGS_SELF
)) {
2717 if (!dev
->netdev_ops
->ndo_bridge_dellink
)
2720 err
= dev
->netdev_ops
->ndo_bridge_dellink(dev
, nlh
);
2723 flags
&= ~BRIDGE_FLAGS_SELF
;
2727 memcpy(nla_data(attr
), &flags
, sizeof(flags
));
2728 /* Generate event to notify upper layer of bridge change */
2730 err
= rtnl_bridge_notify(dev
, oflags
);
2735 /* Process one rtnetlink message. */
2737 static int rtnetlink_rcv_msg(struct sk_buff
*skb
, struct nlmsghdr
*nlh
)
2739 struct net
*net
= sock_net(skb
->sk
);
2740 rtnl_doit_func doit
;
2746 type
= nlh
->nlmsg_type
;
2752 /* All the messages must have at least 1 byte length */
2753 if (nlmsg_len(nlh
) < sizeof(struct rtgenmsg
))
2756 family
= ((struct rtgenmsg
*)nlmsg_data(nlh
))->rtgen_family
;
2760 if (kind
!= 2 && !ns_capable(net
->user_ns
, CAP_NET_ADMIN
))
2763 if (kind
== 2 && nlh
->nlmsg_flags
&NLM_F_DUMP
) {
2765 rtnl_dumpit_func dumpit
;
2766 rtnl_calcit_func calcit
;
2767 u16 min_dump_alloc
= 0;
2769 dumpit
= rtnl_get_dumpit(family
, type
);
2772 calcit
= rtnl_get_calcit(family
, type
);
2774 min_dump_alloc
= calcit(skb
, nlh
);
2779 struct netlink_dump_control c
= {
2781 .min_dump_alloc
= min_dump_alloc
,
2783 err
= netlink_dump_start(rtnl
, skb
, nlh
, &c
);
2789 doit
= rtnl_get_doit(family
, type
);
2793 return doit(skb
, nlh
);
2796 static void rtnetlink_rcv(struct sk_buff
*skb
)
2799 netlink_rcv_skb(skb
, &rtnetlink_rcv_msg
);
2803 static int rtnetlink_event(struct notifier_block
*this, unsigned long event
, void *ptr
)
2805 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
2811 case NETDEV_POST_INIT
:
2812 case NETDEV_REGISTER
:
2814 case NETDEV_PRE_TYPE_CHANGE
:
2815 case NETDEV_GOING_DOWN
:
2816 case NETDEV_UNREGISTER
:
2817 case NETDEV_UNREGISTER_FINAL
:
2818 case NETDEV_RELEASE
:
2822 rtmsg_ifinfo(RTM_NEWLINK
, dev
, 0, GFP_KERNEL
);
2828 static struct notifier_block rtnetlink_dev_notifier
= {
2829 .notifier_call
= rtnetlink_event
,
2833 static int __net_init
rtnetlink_net_init(struct net
*net
)
2836 struct netlink_kernel_cfg cfg
= {
2837 .groups
= RTNLGRP_MAX
,
2838 .input
= rtnetlink_rcv
,
2839 .cb_mutex
= &rtnl_mutex
,
2840 .flags
= NL_CFG_F_NONROOT_RECV
,
2843 sk
= netlink_kernel_create(net
, NETLINK_ROUTE
, &cfg
);
2850 static void __net_exit
rtnetlink_net_exit(struct net
*net
)
2852 netlink_kernel_release(net
->rtnl
);
2856 static struct pernet_operations rtnetlink_net_ops
= {
2857 .init
= rtnetlink_net_init
,
2858 .exit
= rtnetlink_net_exit
,
2861 void __init
rtnetlink_init(void)
2863 if (register_pernet_subsys(&rtnetlink_net_ops
))
2864 panic("rtnetlink_init: cannot initialize rtnetlink\n");
2866 register_netdevice_notifier(&rtnetlink_dev_notifier
);
2868 rtnl_register(PF_UNSPEC
, RTM_GETLINK
, rtnl_getlink
,
2869 rtnl_dump_ifinfo
, rtnl_calcit
);
2870 rtnl_register(PF_UNSPEC
, RTM_SETLINK
, rtnl_setlink
, NULL
, NULL
);
2871 rtnl_register(PF_UNSPEC
, RTM_NEWLINK
, rtnl_newlink
, NULL
, NULL
);
2872 rtnl_register(PF_UNSPEC
, RTM_DELLINK
, rtnl_dellink
, NULL
, NULL
);
2874 rtnl_register(PF_UNSPEC
, RTM_GETADDR
, NULL
, rtnl_dump_all
, NULL
);
2875 rtnl_register(PF_UNSPEC
, RTM_GETROUTE
, NULL
, rtnl_dump_all
, NULL
);
2877 rtnl_register(PF_BRIDGE
, RTM_NEWNEIGH
, rtnl_fdb_add
, NULL
, NULL
);
2878 rtnl_register(PF_BRIDGE
, RTM_DELNEIGH
, rtnl_fdb_del
, NULL
, NULL
);
2879 rtnl_register(PF_BRIDGE
, RTM_GETNEIGH
, NULL
, rtnl_fdb_dump
, NULL
);
2881 rtnl_register(PF_BRIDGE
, RTM_GETLINK
, NULL
, rtnl_bridge_getlink
, NULL
);
2882 rtnl_register(PF_BRIDGE
, RTM_DELLINK
, rtnl_bridge_dellink
, NULL
, NULL
);
2883 rtnl_register(PF_BRIDGE
, RTM_SETLINK
, rtnl_bridge_setlink
, NULL
, NULL
);