2 * drivers/net/bond/bond_netlink.c - Netlink interface for bonding
3 * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
4 * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/module.h>
13 #include <linux/errno.h>
14 #include <linux/netdevice.h>
15 #include <linux/etherdevice.h>
16 #include <linux/if_link.h>
17 #include <linux/if_ether.h>
18 #include <net/netlink.h>
19 #include <net/rtnetlink.h>
22 static size_t bond_get_slave_size(const struct net_device
*bond_dev
,
23 const struct net_device
*slave_dev
)
25 return nla_total_size(sizeof(u8
)) + /* IFLA_BOND_SLAVE_STATE */
26 nla_total_size(sizeof(u8
)) + /* IFLA_BOND_SLAVE_MII_STATUS */
27 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */
28 nla_total_size(MAX_ADDR_LEN
) + /* IFLA_BOND_SLAVE_PERM_HWADDR */
29 nla_total_size(sizeof(u16
)) + /* IFLA_BOND_SLAVE_QUEUE_ID */
30 nla_total_size(sizeof(u16
)) + /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */
34 static int bond_fill_slave_info(struct sk_buff
*skb
,
35 const struct net_device
*bond_dev
,
36 const struct net_device
*slave_dev
)
38 struct slave
*slave
= bond_slave_get_rtnl(slave_dev
);
40 if (nla_put_u8(skb
, IFLA_BOND_SLAVE_STATE
, bond_slave_state(slave
)))
43 if (nla_put_u8(skb
, IFLA_BOND_SLAVE_MII_STATUS
, slave
->link
))
46 if (nla_put_u32(skb
, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT
,
47 slave
->link_failure_count
))
50 if (nla_put(skb
, IFLA_BOND_SLAVE_PERM_HWADDR
,
51 slave_dev
->addr_len
, slave
->perm_hwaddr
))
54 if (nla_put_u16(skb
, IFLA_BOND_SLAVE_QUEUE_ID
, slave
->queue_id
))
57 if (BOND_MODE(slave
->bond
) == BOND_MODE_8023AD
) {
58 const struct aggregator
*agg
;
60 agg
= SLAVE_AD_INFO(slave
)->port
.aggregator
;
62 if (nla_put_u16(skb
, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID
,
63 agg
->aggregator_identifier
))
73 static const struct nla_policy bond_policy
[IFLA_BOND_MAX
+ 1] = {
74 [IFLA_BOND_MODE
] = { .type
= NLA_U8
},
75 [IFLA_BOND_ACTIVE_SLAVE
] = { .type
= NLA_U32
},
76 [IFLA_BOND_MIIMON
] = { .type
= NLA_U32
},
77 [IFLA_BOND_UPDELAY
] = { .type
= NLA_U32
},
78 [IFLA_BOND_DOWNDELAY
] = { .type
= NLA_U32
},
79 [IFLA_BOND_USE_CARRIER
] = { .type
= NLA_U8
},
80 [IFLA_BOND_ARP_INTERVAL
] = { .type
= NLA_U32
},
81 [IFLA_BOND_ARP_IP_TARGET
] = { .type
= NLA_NESTED
},
82 [IFLA_BOND_ARP_VALIDATE
] = { .type
= NLA_U32
},
83 [IFLA_BOND_ARP_ALL_TARGETS
] = { .type
= NLA_U32
},
84 [IFLA_BOND_PRIMARY
] = { .type
= NLA_U32
},
85 [IFLA_BOND_PRIMARY_RESELECT
] = { .type
= NLA_U8
},
86 [IFLA_BOND_FAIL_OVER_MAC
] = { .type
= NLA_U8
},
87 [IFLA_BOND_XMIT_HASH_POLICY
] = { .type
= NLA_U8
},
88 [IFLA_BOND_RESEND_IGMP
] = { .type
= NLA_U32
},
89 [IFLA_BOND_NUM_PEER_NOTIF
] = { .type
= NLA_U8
},
90 [IFLA_BOND_ALL_SLAVES_ACTIVE
] = { .type
= NLA_U8
},
91 [IFLA_BOND_MIN_LINKS
] = { .type
= NLA_U32
},
92 [IFLA_BOND_LP_INTERVAL
] = { .type
= NLA_U32
},
93 [IFLA_BOND_PACKETS_PER_SLAVE
] = { .type
= NLA_U32
},
94 [IFLA_BOND_AD_LACP_RATE
] = { .type
= NLA_U8
},
95 [IFLA_BOND_AD_SELECT
] = { .type
= NLA_U8
},
96 [IFLA_BOND_AD_INFO
] = { .type
= NLA_NESTED
},
99 static int bond_validate(struct nlattr
*tb
[], struct nlattr
*data
[])
101 if (tb
[IFLA_ADDRESS
]) {
102 if (nla_len(tb
[IFLA_ADDRESS
]) != ETH_ALEN
)
104 if (!is_valid_ether_addr(nla_data(tb
[IFLA_ADDRESS
])))
105 return -EADDRNOTAVAIL
;
110 static int bond_changelink(struct net_device
*bond_dev
,
111 struct nlattr
*tb
[], struct nlattr
*data
[])
113 struct bonding
*bond
= netdev_priv(bond_dev
);
114 struct bond_opt_value newval
;
121 if (data
[IFLA_BOND_MODE
]) {
122 int mode
= nla_get_u8(data
[IFLA_BOND_MODE
]);
124 bond_opt_initval(&newval
, mode
);
125 err
= __bond_opt_set(bond
, BOND_OPT_MODE
, &newval
);
129 if (data
[IFLA_BOND_ACTIVE_SLAVE
]) {
130 int ifindex
= nla_get_u32(data
[IFLA_BOND_ACTIVE_SLAVE
]);
131 struct net_device
*slave_dev
;
132 char *active_slave
= "";
135 slave_dev
= __dev_get_by_index(dev_net(bond_dev
),
139 active_slave
= slave_dev
->name
;
141 bond_opt_initstr(&newval
, active_slave
);
142 err
= __bond_opt_set(bond
, BOND_OPT_ACTIVE_SLAVE
, &newval
);
146 if (data
[IFLA_BOND_MIIMON
]) {
147 miimon
= nla_get_u32(data
[IFLA_BOND_MIIMON
]);
149 bond_opt_initval(&newval
, miimon
);
150 err
= __bond_opt_set(bond
, BOND_OPT_MIIMON
, &newval
);
154 if (data
[IFLA_BOND_UPDELAY
]) {
155 int updelay
= nla_get_u32(data
[IFLA_BOND_UPDELAY
]);
157 bond_opt_initval(&newval
, updelay
);
158 err
= __bond_opt_set(bond
, BOND_OPT_UPDELAY
, &newval
);
162 if (data
[IFLA_BOND_DOWNDELAY
]) {
163 int downdelay
= nla_get_u32(data
[IFLA_BOND_DOWNDELAY
]);
165 bond_opt_initval(&newval
, downdelay
);
166 err
= __bond_opt_set(bond
, BOND_OPT_DOWNDELAY
, &newval
);
170 if (data
[IFLA_BOND_USE_CARRIER
]) {
171 int use_carrier
= nla_get_u8(data
[IFLA_BOND_USE_CARRIER
]);
173 bond_opt_initval(&newval
, use_carrier
);
174 err
= __bond_opt_set(bond
, BOND_OPT_USE_CARRIER
, &newval
);
178 if (data
[IFLA_BOND_ARP_INTERVAL
]) {
179 int arp_interval
= nla_get_u32(data
[IFLA_BOND_ARP_INTERVAL
]);
181 if (arp_interval
&& miimon
) {
182 netdev_err(bond
->dev
, "ARP monitoring cannot be used with MII monitoring\n");
186 bond_opt_initval(&newval
, arp_interval
);
187 err
= __bond_opt_set(bond
, BOND_OPT_ARP_INTERVAL
, &newval
);
191 if (data
[IFLA_BOND_ARP_IP_TARGET
]) {
195 bond_option_arp_ip_targets_clear(bond
);
196 nla_for_each_nested(attr
, data
[IFLA_BOND_ARP_IP_TARGET
], rem
) {
197 __be32 target
= nla_get_be32(attr
);
199 bond_opt_initval(&newval
, (__force u64
)target
);
200 err
= __bond_opt_set(bond
, BOND_OPT_ARP_TARGETS
,
206 if (i
== 0 && bond
->params
.arp_interval
)
207 netdev_warn(bond
->dev
, "Removing last arp target with arp_interval on\n");
211 if (data
[IFLA_BOND_ARP_VALIDATE
]) {
212 int arp_validate
= nla_get_u32(data
[IFLA_BOND_ARP_VALIDATE
]);
214 if (arp_validate
&& miimon
) {
215 netdev_err(bond
->dev
, "ARP validating cannot be used with MII monitoring\n");
219 bond_opt_initval(&newval
, arp_validate
);
220 err
= __bond_opt_set(bond
, BOND_OPT_ARP_VALIDATE
, &newval
);
224 if (data
[IFLA_BOND_ARP_ALL_TARGETS
]) {
225 int arp_all_targets
=
226 nla_get_u32(data
[IFLA_BOND_ARP_ALL_TARGETS
]);
228 bond_opt_initval(&newval
, arp_all_targets
);
229 err
= __bond_opt_set(bond
, BOND_OPT_ARP_ALL_TARGETS
, &newval
);
233 if (data
[IFLA_BOND_PRIMARY
]) {
234 int ifindex
= nla_get_u32(data
[IFLA_BOND_PRIMARY
]);
235 struct net_device
*dev
;
238 dev
= __dev_get_by_index(dev_net(bond_dev
), ifindex
);
242 bond_opt_initstr(&newval
, primary
);
243 err
= __bond_opt_set(bond
, BOND_OPT_PRIMARY
, &newval
);
247 if (data
[IFLA_BOND_PRIMARY_RESELECT
]) {
248 int primary_reselect
=
249 nla_get_u8(data
[IFLA_BOND_PRIMARY_RESELECT
]);
251 bond_opt_initval(&newval
, primary_reselect
);
252 err
= __bond_opt_set(bond
, BOND_OPT_PRIMARY_RESELECT
, &newval
);
256 if (data
[IFLA_BOND_FAIL_OVER_MAC
]) {
258 nla_get_u8(data
[IFLA_BOND_FAIL_OVER_MAC
]);
260 bond_opt_initval(&newval
, fail_over_mac
);
261 err
= __bond_opt_set(bond
, BOND_OPT_FAIL_OVER_MAC
, &newval
);
265 if (data
[IFLA_BOND_XMIT_HASH_POLICY
]) {
266 int xmit_hash_policy
=
267 nla_get_u8(data
[IFLA_BOND_XMIT_HASH_POLICY
]);
269 bond_opt_initval(&newval
, xmit_hash_policy
);
270 err
= __bond_opt_set(bond
, BOND_OPT_XMIT_HASH
, &newval
);
274 if (data
[IFLA_BOND_RESEND_IGMP
]) {
276 nla_get_u32(data
[IFLA_BOND_RESEND_IGMP
]);
278 bond_opt_initval(&newval
, resend_igmp
);
279 err
= __bond_opt_set(bond
, BOND_OPT_RESEND_IGMP
, &newval
);
283 if (data
[IFLA_BOND_NUM_PEER_NOTIF
]) {
285 nla_get_u8(data
[IFLA_BOND_NUM_PEER_NOTIF
]);
287 bond_opt_initval(&newval
, num_peer_notif
);
288 err
= __bond_opt_set(bond
, BOND_OPT_NUM_PEER_NOTIF
, &newval
);
292 if (data
[IFLA_BOND_ALL_SLAVES_ACTIVE
]) {
293 int all_slaves_active
=
294 nla_get_u8(data
[IFLA_BOND_ALL_SLAVES_ACTIVE
]);
296 bond_opt_initval(&newval
, all_slaves_active
);
297 err
= __bond_opt_set(bond
, BOND_OPT_ALL_SLAVES_ACTIVE
, &newval
);
301 if (data
[IFLA_BOND_MIN_LINKS
]) {
303 nla_get_u32(data
[IFLA_BOND_MIN_LINKS
]);
305 bond_opt_initval(&newval
, min_links
);
306 err
= __bond_opt_set(bond
, BOND_OPT_MINLINKS
, &newval
);
310 if (data
[IFLA_BOND_LP_INTERVAL
]) {
312 nla_get_u32(data
[IFLA_BOND_LP_INTERVAL
]);
314 bond_opt_initval(&newval
, lp_interval
);
315 err
= __bond_opt_set(bond
, BOND_OPT_LP_INTERVAL
, &newval
);
319 if (data
[IFLA_BOND_PACKETS_PER_SLAVE
]) {
320 int packets_per_slave
=
321 nla_get_u32(data
[IFLA_BOND_PACKETS_PER_SLAVE
]);
323 bond_opt_initval(&newval
, packets_per_slave
);
324 err
= __bond_opt_set(bond
, BOND_OPT_PACKETS_PER_SLAVE
, &newval
);
328 if (data
[IFLA_BOND_AD_LACP_RATE
]) {
330 nla_get_u8(data
[IFLA_BOND_AD_LACP_RATE
]);
332 bond_opt_initval(&newval
, lacp_rate
);
333 err
= __bond_opt_set(bond
, BOND_OPT_LACP_RATE
, &newval
);
337 if (data
[IFLA_BOND_AD_SELECT
]) {
339 nla_get_u8(data
[IFLA_BOND_AD_SELECT
]);
341 bond_opt_initval(&newval
, ad_select
);
342 err
= __bond_opt_set(bond
, BOND_OPT_AD_SELECT
, &newval
);
349 static int bond_newlink(struct net
*src_net
, struct net_device
*bond_dev
,
350 struct nlattr
*tb
[], struct nlattr
*data
[])
354 err
= bond_changelink(bond_dev
, tb
, data
);
358 return register_netdevice(bond_dev
);
361 static size_t bond_get_size(const struct net_device
*bond_dev
)
363 return nla_total_size(sizeof(u8
)) + /* IFLA_BOND_MODE */
364 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_ACTIVE_SLAVE */
365 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_MIIMON */
366 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_UPDELAY */
367 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_DOWNDELAY */
368 nla_total_size(sizeof(u8
)) + /* IFLA_BOND_USE_CARRIER */
369 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_ARP_INTERVAL */
370 /* IFLA_BOND_ARP_IP_TARGET */
371 nla_total_size(sizeof(struct nlattr
)) +
372 nla_total_size(sizeof(u32
)) * BOND_MAX_ARP_TARGETS
+
373 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_ARP_VALIDATE */
374 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_ARP_ALL_TARGETS */
375 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_PRIMARY */
376 nla_total_size(sizeof(u8
)) + /* IFLA_BOND_PRIMARY_RESELECT */
377 nla_total_size(sizeof(u8
)) + /* IFLA_BOND_FAIL_OVER_MAC */
378 nla_total_size(sizeof(u8
)) + /* IFLA_BOND_XMIT_HASH_POLICY */
379 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_RESEND_IGMP */
380 nla_total_size(sizeof(u8
)) + /* IFLA_BOND_NUM_PEER_NOTIF */
381 nla_total_size(sizeof(u8
)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */
382 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_MIN_LINKS */
383 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_LP_INTERVAL */
384 nla_total_size(sizeof(u32
)) + /* IFLA_BOND_PACKETS_PER_SLAVE */
385 nla_total_size(sizeof(u8
)) + /* IFLA_BOND_AD_LACP_RATE */
386 nla_total_size(sizeof(u8
)) + /* IFLA_BOND_AD_SELECT */
387 nla_total_size(sizeof(struct nlattr
)) + /* IFLA_BOND_AD_INFO */
388 nla_total_size(sizeof(u16
)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
389 nla_total_size(sizeof(u16
)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
390 nla_total_size(sizeof(u16
)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
391 nla_total_size(sizeof(u16
)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
392 nla_total_size(ETH_ALEN
) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
396 static int bond_option_active_slave_get_ifindex(struct bonding
*bond
)
398 const struct net_device
*slave
;
402 slave
= bond_option_active_slave_get_rcu(bond
);
403 ifindex
= slave
? slave
->ifindex
: 0;
408 static int bond_fill_info(struct sk_buff
*skb
,
409 const struct net_device
*bond_dev
)
411 struct bonding
*bond
= netdev_priv(bond_dev
);
412 unsigned int packets_per_slave
;
413 int ifindex
, i
, targets_added
;
414 struct nlattr
*targets
;
416 if (nla_put_u8(skb
, IFLA_BOND_MODE
, BOND_MODE(bond
)))
417 goto nla_put_failure
;
419 ifindex
= bond_option_active_slave_get_ifindex(bond
);
420 if (ifindex
&& nla_put_u32(skb
, IFLA_BOND_ACTIVE_SLAVE
, ifindex
))
421 goto nla_put_failure
;
423 if (nla_put_u32(skb
, IFLA_BOND_MIIMON
, bond
->params
.miimon
))
424 goto nla_put_failure
;
426 if (nla_put_u32(skb
, IFLA_BOND_UPDELAY
,
427 bond
->params
.updelay
* bond
->params
.miimon
))
428 goto nla_put_failure
;
430 if (nla_put_u32(skb
, IFLA_BOND_DOWNDELAY
,
431 bond
->params
.downdelay
* bond
->params
.miimon
))
432 goto nla_put_failure
;
434 if (nla_put_u8(skb
, IFLA_BOND_USE_CARRIER
, bond
->params
.use_carrier
))
435 goto nla_put_failure
;
437 if (nla_put_u32(skb
, IFLA_BOND_ARP_INTERVAL
, bond
->params
.arp_interval
))
438 goto nla_put_failure
;
440 targets
= nla_nest_start(skb
, IFLA_BOND_ARP_IP_TARGET
);
442 goto nla_put_failure
;
445 for (i
= 0; i
< BOND_MAX_ARP_TARGETS
; i
++) {
446 if (bond
->params
.arp_targets
[i
]) {
447 nla_put_be32(skb
, i
, bond
->params
.arp_targets
[i
]);
453 nla_nest_end(skb
, targets
);
455 nla_nest_cancel(skb
, targets
);
457 if (nla_put_u32(skb
, IFLA_BOND_ARP_VALIDATE
, bond
->params
.arp_validate
))
458 goto nla_put_failure
;
460 if (nla_put_u32(skb
, IFLA_BOND_ARP_ALL_TARGETS
,
461 bond
->params
.arp_all_targets
))
462 goto nla_put_failure
;
464 if (bond
->primary_slave
&&
465 nla_put_u32(skb
, IFLA_BOND_PRIMARY
,
466 bond
->primary_slave
->dev
->ifindex
))
467 goto nla_put_failure
;
469 if (nla_put_u8(skb
, IFLA_BOND_PRIMARY_RESELECT
,
470 bond
->params
.primary_reselect
))
471 goto nla_put_failure
;
473 if (nla_put_u8(skb
, IFLA_BOND_FAIL_OVER_MAC
,
474 bond
->params
.fail_over_mac
))
475 goto nla_put_failure
;
477 if (nla_put_u8(skb
, IFLA_BOND_XMIT_HASH_POLICY
,
478 bond
->params
.xmit_policy
))
479 goto nla_put_failure
;
481 if (nla_put_u32(skb
, IFLA_BOND_RESEND_IGMP
,
482 bond
->params
.resend_igmp
))
483 goto nla_put_failure
;
485 if (nla_put_u8(skb
, IFLA_BOND_NUM_PEER_NOTIF
,
486 bond
->params
.num_peer_notif
))
487 goto nla_put_failure
;
489 if (nla_put_u8(skb
, IFLA_BOND_ALL_SLAVES_ACTIVE
,
490 bond
->params
.all_slaves_active
))
491 goto nla_put_failure
;
493 if (nla_put_u32(skb
, IFLA_BOND_MIN_LINKS
,
494 bond
->params
.min_links
))
495 goto nla_put_failure
;
497 if (nla_put_u32(skb
, IFLA_BOND_LP_INTERVAL
,
498 bond
->params
.lp_interval
))
499 goto nla_put_failure
;
501 packets_per_slave
= bond
->params
.packets_per_slave
;
502 if (nla_put_u32(skb
, IFLA_BOND_PACKETS_PER_SLAVE
,
504 goto nla_put_failure
;
506 if (nla_put_u8(skb
, IFLA_BOND_AD_LACP_RATE
,
507 bond
->params
.lacp_fast
))
508 goto nla_put_failure
;
510 if (nla_put_u8(skb
, IFLA_BOND_AD_SELECT
,
511 bond
->params
.ad_select
))
512 goto nla_put_failure
;
514 if (BOND_MODE(bond
) == BOND_MODE_8023AD
) {
517 if (!bond_3ad_get_active_agg_info(bond
, &info
)) {
520 nest
= nla_nest_start(skb
, IFLA_BOND_AD_INFO
);
522 goto nla_put_failure
;
524 if (nla_put_u16(skb
, IFLA_BOND_AD_INFO_AGGREGATOR
,
526 goto nla_put_failure
;
527 if (nla_put_u16(skb
, IFLA_BOND_AD_INFO_NUM_PORTS
,
529 goto nla_put_failure
;
530 if (nla_put_u16(skb
, IFLA_BOND_AD_INFO_ACTOR_KEY
,
532 goto nla_put_failure
;
533 if (nla_put_u16(skb
, IFLA_BOND_AD_INFO_PARTNER_KEY
,
535 goto nla_put_failure
;
536 if (nla_put(skb
, IFLA_BOND_AD_INFO_PARTNER_MAC
,
537 sizeof(info
.partner_system
),
538 &info
.partner_system
))
539 goto nla_put_failure
;
541 nla_nest_end(skb
, nest
);
551 struct rtnl_link_ops bond_link_ops __read_mostly
= {
553 .priv_size
= sizeof(struct bonding
),
555 .maxtype
= IFLA_BOND_MAX
,
556 .policy
= bond_policy
,
557 .validate
= bond_validate
,
558 .newlink
= bond_newlink
,
559 .changelink
= bond_changelink
,
560 .get_size
= bond_get_size
,
561 .fill_info
= bond_fill_info
,
562 .get_num_tx_queues
= bond_get_num_tx_queues
,
563 .get_num_rx_queues
= bond_get_num_tx_queues
, /* Use the same number
565 .get_slave_size
= bond_get_slave_size
,
566 .fill_slave_info
= bond_fill_slave_info
,
569 int __init
bond_netlink_init(void)
571 return rtnl_link_register(&bond_link_ops
);
574 void bond_netlink_fini(void)
576 rtnl_link_unregister(&bond_link_ops
);
579 MODULE_ALIAS_RTNL_LINK("bond");