2 * Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
23 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25 #include <linux/kernel.h>
26 #include <linux/module.h>
27 #include <linux/device.h>
28 #include <linux/sched.h>
29 #include <linux/sysdev.h>
31 #include <linux/types.h>
32 #include <linux/string.h>
33 #include <linux/netdevice.h>
34 #include <linux/inetdevice.h>
36 #include <linux/sysfs.h>
37 #include <linux/ctype.h>
38 #include <linux/inet.h>
39 #include <linux/rtnetlink.h>
40 #include <linux/etherdevice.h>
41 #include <net/net_namespace.h>
42 #include <net/netns/generic.h>
43 #include <linux/nsproxy.h>
47 #define to_dev(obj) container_of(obj, struct device, kobj)
48 #define to_bond(cd) ((struct bonding *)(netdev_priv(to_net_dev(cd))))
51 * "show" function for the bond_masters attribute.
52 * The class parameter is ignored.
54 static ssize_t
bonding_show_bonds(struct class *cls
,
55 struct class_attribute
*attr
,
58 struct net
*net
= current
->nsproxy
->net_ns
;
59 struct bond_net
*bn
= net_generic(net
, bond_net_id
);
65 list_for_each_entry(bond
, &bn
->dev_list
, bond_list
) {
66 if (res
> (PAGE_SIZE
- IFNAMSIZ
)) {
67 /* not enough space for another interface name */
68 if ((PAGE_SIZE
- res
) > 10)
70 res
+= sprintf(buf
+ res
, "++more++ ");
73 res
+= sprintf(buf
+ res
, "%s ", bond
->dev
->name
);
76 buf
[res
-1] = '\n'; /* eat the leftover space */
82 static struct net_device
*bond_get_by_name(struct net
*net
, const char *ifname
)
84 struct bond_net
*bn
= net_generic(net
, bond_net_id
);
87 list_for_each_entry(bond
, &bn
->dev_list
, bond_list
) {
88 if (strncmp(bond
->dev
->name
, ifname
, IFNAMSIZ
) == 0)
95 * "store" function for the bond_masters attribute. This is what
96 * creates and deletes entire bonds.
98 * The class parameter is ignored.
102 static ssize_t
bonding_store_bonds(struct class *cls
,
103 struct class_attribute
*attr
,
104 const char *buffer
, size_t count
)
106 struct net
*net
= current
->nsproxy
->net_ns
;
107 char command
[IFNAMSIZ
+ 1] = {0, };
111 sscanf(buffer
, "%16s", command
); /* IFNAMSIZ*/
112 ifname
= command
+ 1;
113 if ((strlen(command
) <= 1) ||
114 !dev_valid_name(ifname
))
117 if (command
[0] == '+') {
118 pr_info("%s is being created...\n", ifname
);
119 rv
= bond_create(net
, ifname
);
122 pr_info("%s already exists.\n", ifname
);
124 pr_info("%s creation failed.\n", ifname
);
127 } else if (command
[0] == '-') {
128 struct net_device
*bond_dev
;
131 bond_dev
= bond_get_by_name(net
, ifname
);
133 pr_info("%s is being deleted...\n", ifname
);
134 unregister_netdevice(bond_dev
);
136 pr_err("unable to delete non-existent %s\n", ifname
);
143 /* Always return either count or an error. If you return 0, you'll
144 * get called forever, which is bad.
149 pr_err("no command found in bonding_masters. Use +ifname or -ifname.\n");
153 /* class attribute for bond_masters file. This ends up in /sys/class/net */
154 static CLASS_ATTR(bonding_masters
, S_IWUSR
| S_IRUGO
,
155 bonding_show_bonds
, bonding_store_bonds
);
157 int bond_create_slave_symlinks(struct net_device
*master
,
158 struct net_device
*slave
)
160 char linkname
[IFNAMSIZ
+7];
163 /* first, create a link from the slave back to the master */
164 ret
= sysfs_create_link(&(slave
->dev
.kobj
), &(master
->dev
.kobj
),
168 /* next, create a link from the master to the slave */
169 sprintf(linkname
, "slave_%s", slave
->name
);
170 ret
= sysfs_create_link(&(master
->dev
.kobj
), &(slave
->dev
.kobj
),
176 void bond_destroy_slave_symlinks(struct net_device
*master
,
177 struct net_device
*slave
)
179 char linkname
[IFNAMSIZ
+7];
181 sysfs_remove_link(&(slave
->dev
.kobj
), "master");
182 sprintf(linkname
, "slave_%s", slave
->name
);
183 sysfs_remove_link(&(master
->dev
.kobj
), linkname
);
188 * Show the slaves in the current bond.
190 static ssize_t
bonding_show_slaves(struct device
*d
,
191 struct device_attribute
*attr
, char *buf
)
195 struct bonding
*bond
= to_bond(d
);
197 read_lock(&bond
->lock
);
198 bond_for_each_slave(bond
, slave
, i
) {
199 if (res
> (PAGE_SIZE
- IFNAMSIZ
)) {
200 /* not enough space for another interface name */
201 if ((PAGE_SIZE
- res
) > 10)
202 res
= PAGE_SIZE
- 10;
203 res
+= sprintf(buf
+ res
, "++more++ ");
206 res
+= sprintf(buf
+ res
, "%s ", slave
->dev
->name
);
208 read_unlock(&bond
->lock
);
210 buf
[res
-1] = '\n'; /* eat the leftover space */
215 * Set the slaves in the current bond. The bond interface must be
216 * up for this to succeed.
217 * This is supposed to be only thin wrapper for bond_enslave and bond_release.
218 * All hard work should be done there.
220 static ssize_t
bonding_store_slaves(struct device
*d
,
221 struct device_attribute
*attr
,
222 const char *buffer
, size_t count
)
224 char command
[IFNAMSIZ
+ 1] = { 0, };
226 int res
, ret
= count
;
227 struct net_device
*dev
;
228 struct bonding
*bond
= to_bond(d
);
230 /* Quick sanity check -- is the bond interface up? */
231 if (!(bond
->dev
->flags
& IFF_UP
)) {
232 pr_warning("%s: doing slave updates when interface is down.\n",
237 return restart_syscall();
239 sscanf(buffer
, "%16s", command
); /* IFNAMSIZ*/
240 ifname
= command
+ 1;
241 if ((strlen(command
) <= 1) ||
242 !dev_valid_name(ifname
))
245 dev
= __dev_get_by_name(dev_net(bond
->dev
), ifname
);
247 pr_info("%s: Interface %s does not exist!\n",
248 bond
->dev
->name
, ifname
);
253 switch (command
[0]) {
255 pr_info("%s: Adding slave %s.\n", bond
->dev
->name
, dev
->name
);
256 res
= bond_enslave(bond
->dev
, dev
);
260 pr_info("%s: Removing slave %s.\n", bond
->dev
->name
, dev
->name
);
261 res
= bond_release(bond
->dev
, dev
);
273 pr_err("no command found in slaves file for bond %s. Use +ifname or -ifname.\n",
282 static DEVICE_ATTR(slaves
, S_IRUGO
| S_IWUSR
, bonding_show_slaves
,
283 bonding_store_slaves
);
286 * Show and set the bonding mode. The bond interface must be down to
289 static ssize_t
bonding_show_mode(struct device
*d
,
290 struct device_attribute
*attr
, char *buf
)
292 struct bonding
*bond
= to_bond(d
);
294 return sprintf(buf
, "%s %d\n",
295 bond_mode_tbl
[bond
->params
.mode
].modename
,
299 static ssize_t
bonding_store_mode(struct device
*d
,
300 struct device_attribute
*attr
,
301 const char *buf
, size_t count
)
303 int new_value
, ret
= count
;
304 struct bonding
*bond
= to_bond(d
);
306 if (bond
->dev
->flags
& IFF_UP
) {
307 pr_err("unable to update mode of %s because interface is up.\n",
313 new_value
= bond_parse_parm(buf
, bond_mode_tbl
);
315 pr_err("%s: Ignoring invalid mode value %.*s.\n",
316 bond
->dev
->name
, (int)strlen(buf
) - 1, buf
);
320 if ((new_value
== BOND_MODE_ALB
||
321 new_value
== BOND_MODE_TLB
) &&
322 bond
->params
.arp_interval
) {
323 pr_err("%s: %s mode is incompatible with arp monitoring.\n",
324 bond
->dev
->name
, bond_mode_tbl
[new_value
].modename
);
329 bond
->params
.mode
= new_value
;
330 bond_set_mode_ops(bond
, bond
->params
.mode
);
331 pr_info("%s: setting mode to %s (%d).\n",
332 bond
->dev
->name
, bond_mode_tbl
[new_value
].modename
,
337 static DEVICE_ATTR(mode
, S_IRUGO
| S_IWUSR
,
338 bonding_show_mode
, bonding_store_mode
);
341 * Show and set the bonding transmit hash method.
342 * The bond interface must be down to change the xmit hash policy.
344 static ssize_t
bonding_show_xmit_hash(struct device
*d
,
345 struct device_attribute
*attr
,
348 struct bonding
*bond
= to_bond(d
);
350 return sprintf(buf
, "%s %d\n",
351 xmit_hashtype_tbl
[bond
->params
.xmit_policy
].modename
,
352 bond
->params
.xmit_policy
);
355 static ssize_t
bonding_store_xmit_hash(struct device
*d
,
356 struct device_attribute
*attr
,
357 const char *buf
, size_t count
)
359 int new_value
, ret
= count
;
360 struct bonding
*bond
= to_bond(d
);
362 if (bond
->dev
->flags
& IFF_UP
) {
363 pr_err("%s: Interface is up. Unable to update xmit policy.\n",
369 new_value
= bond_parse_parm(buf
, xmit_hashtype_tbl
);
371 pr_err("%s: Ignoring invalid xmit hash policy value %.*s.\n",
373 (int)strlen(buf
) - 1, buf
);
377 bond
->params
.xmit_policy
= new_value
;
378 bond_set_mode_ops(bond
, bond
->params
.mode
);
379 pr_info("%s: setting xmit hash policy to %s (%d).\n",
381 xmit_hashtype_tbl
[new_value
].modename
, new_value
);
386 static DEVICE_ATTR(xmit_hash_policy
, S_IRUGO
| S_IWUSR
,
387 bonding_show_xmit_hash
, bonding_store_xmit_hash
);
390 * Show and set arp_validate.
392 static ssize_t
bonding_show_arp_validate(struct device
*d
,
393 struct device_attribute
*attr
,
396 struct bonding
*bond
= to_bond(d
);
398 return sprintf(buf
, "%s %d\n",
399 arp_validate_tbl
[bond
->params
.arp_validate
].modename
,
400 bond
->params
.arp_validate
);
403 static ssize_t
bonding_store_arp_validate(struct device
*d
,
404 struct device_attribute
*attr
,
405 const char *buf
, size_t count
)
408 struct bonding
*bond
= to_bond(d
);
410 new_value
= bond_parse_parm(buf
, arp_validate_tbl
);
412 pr_err("%s: Ignoring invalid arp_validate value %s\n",
413 bond
->dev
->name
, buf
);
416 if (new_value
&& (bond
->params
.mode
!= BOND_MODE_ACTIVEBACKUP
)) {
417 pr_err("%s: arp_validate only supported in active-backup mode.\n",
421 pr_info("%s: setting arp_validate to %s (%d).\n",
422 bond
->dev
->name
, arp_validate_tbl
[new_value
].modename
,
425 if (!bond
->params
.arp_validate
&& new_value
)
426 bond_register_arp(bond
);
427 else if (bond
->params
.arp_validate
&& !new_value
)
428 bond_unregister_arp(bond
);
430 bond
->params
.arp_validate
= new_value
;
435 static DEVICE_ATTR(arp_validate
, S_IRUGO
| S_IWUSR
, bonding_show_arp_validate
,
436 bonding_store_arp_validate
);
439 * Show and store fail_over_mac. User only allowed to change the
440 * value when there are no slaves.
442 static ssize_t
bonding_show_fail_over_mac(struct device
*d
,
443 struct device_attribute
*attr
,
446 struct bonding
*bond
= to_bond(d
);
448 return sprintf(buf
, "%s %d\n",
449 fail_over_mac_tbl
[bond
->params
.fail_over_mac
].modename
,
450 bond
->params
.fail_over_mac
);
453 static ssize_t
bonding_store_fail_over_mac(struct device
*d
,
454 struct device_attribute
*attr
,
455 const char *buf
, size_t count
)
458 struct bonding
*bond
= to_bond(d
);
460 if (bond
->slave_cnt
!= 0) {
461 pr_err("%s: Can't alter fail_over_mac with slaves in bond.\n",
466 new_value
= bond_parse_parm(buf
, fail_over_mac_tbl
);
468 pr_err("%s: Ignoring invalid fail_over_mac value %s.\n",
469 bond
->dev
->name
, buf
);
473 bond
->params
.fail_over_mac
= new_value
;
474 pr_info("%s: Setting fail_over_mac to %s (%d).\n",
475 bond
->dev
->name
, fail_over_mac_tbl
[new_value
].modename
,
481 static DEVICE_ATTR(fail_over_mac
, S_IRUGO
| S_IWUSR
,
482 bonding_show_fail_over_mac
, bonding_store_fail_over_mac
);
485 * Show and set the arp timer interval. There are two tricky bits
486 * here. First, if ARP monitoring is activated, then we must disable
487 * MII monitoring. Second, if the ARP timer isn't running, we must
490 static ssize_t
bonding_show_arp_interval(struct device
*d
,
491 struct device_attribute
*attr
,
494 struct bonding
*bond
= to_bond(d
);
496 return sprintf(buf
, "%d\n", bond
->params
.arp_interval
);
499 static ssize_t
bonding_store_arp_interval(struct device
*d
,
500 struct device_attribute
*attr
,
501 const char *buf
, size_t count
)
503 int new_value
, ret
= count
;
504 struct bonding
*bond
= to_bond(d
);
506 if (sscanf(buf
, "%d", &new_value
) != 1) {
507 pr_err("%s: no arp_interval value specified.\n",
513 pr_err("%s: Invalid arp_interval value %d not in range 1-%d; rejected.\n",
514 bond
->dev
->name
, new_value
, INT_MAX
);
518 if (bond
->params
.mode
== BOND_MODE_ALB
||
519 bond
->params
.mode
== BOND_MODE_TLB
) {
520 pr_info("%s: ARP monitoring cannot be used with ALB/TLB. Only MII monitoring is supported on %s.\n",
521 bond
->dev
->name
, bond
->dev
->name
);
525 pr_info("%s: Setting ARP monitoring interval to %d.\n",
526 bond
->dev
->name
, new_value
);
527 bond
->params
.arp_interval
= new_value
;
528 if (bond
->params
.miimon
) {
529 pr_info("%s: ARP monitoring cannot be used with MII monitoring. %s Disabling MII monitoring.\n",
530 bond
->dev
->name
, bond
->dev
->name
);
531 bond
->params
.miimon
= 0;
532 if (delayed_work_pending(&bond
->mii_work
)) {
533 cancel_delayed_work(&bond
->mii_work
);
534 flush_workqueue(bond
->wq
);
537 if (!bond
->params
.arp_targets
[0]) {
538 pr_info("%s: ARP monitoring has been set up, but no ARP targets have been specified.\n",
541 if (bond
->dev
->flags
& IFF_UP
) {
542 /* If the interface is up, we may need to fire off
543 * the ARP timer. If the interface is down, the
544 * timer will get fired off when the open function
547 if (!delayed_work_pending(&bond
->arp_work
)) {
548 if (bond
->params
.mode
== BOND_MODE_ACTIVEBACKUP
)
549 INIT_DELAYED_WORK(&bond
->arp_work
,
550 bond_activebackup_arp_mon
);
552 INIT_DELAYED_WORK(&bond
->arp_work
,
553 bond_loadbalance_arp_mon
);
555 queue_delayed_work(bond
->wq
, &bond
->arp_work
, 0);
562 static DEVICE_ATTR(arp_interval
, S_IRUGO
| S_IWUSR
,
563 bonding_show_arp_interval
, bonding_store_arp_interval
);
566 * Show and set the arp targets.
568 static ssize_t
bonding_show_arp_targets(struct device
*d
,
569 struct device_attribute
*attr
,
573 struct bonding
*bond
= to_bond(d
);
575 for (i
= 0; i
< BOND_MAX_ARP_TARGETS
; i
++) {
576 if (bond
->params
.arp_targets
[i
])
577 res
+= sprintf(buf
+ res
, "%pI4 ",
578 &bond
->params
.arp_targets
[i
]);
581 buf
[res
-1] = '\n'; /* eat the leftover space */
585 static ssize_t
bonding_store_arp_targets(struct device
*d
,
586 struct device_attribute
*attr
,
587 const char *buf
, size_t count
)
590 int i
= 0, done
= 0, ret
= count
;
591 struct bonding
*bond
= to_bond(d
);
594 targets
= bond
->params
.arp_targets
;
595 newtarget
= in_aton(buf
+ 1);
598 if ((newtarget
== 0) || (newtarget
== htonl(INADDR_BROADCAST
))) {
599 pr_err("%s: invalid ARP target %pI4 specified for addition\n",
600 bond
->dev
->name
, &newtarget
);
604 /* look for an empty slot to put the target in, and check for dupes */
605 for (i
= 0; (i
< BOND_MAX_ARP_TARGETS
) && !done
; i
++) {
606 if (targets
[i
] == newtarget
) { /* duplicate */
607 pr_err("%s: ARP target %pI4 is already present\n",
608 bond
->dev
->name
, &newtarget
);
612 if (targets
[i
] == 0) {
613 pr_info("%s: adding ARP target %pI4.\n",
614 bond
->dev
->name
, &newtarget
);
616 targets
[i
] = newtarget
;
620 pr_err("%s: ARP target table is full!\n",
626 } else if (buf
[0] == '-') {
627 if ((newtarget
== 0) || (newtarget
== htonl(INADDR_BROADCAST
))) {
628 pr_err("%s: invalid ARP target %pI4 specified for removal\n",
629 bond
->dev
->name
, &newtarget
);
634 for (i
= 0; (i
< BOND_MAX_ARP_TARGETS
) && !done
; i
++) {
635 if (targets
[i
] == newtarget
) {
637 pr_info("%s: removing ARP target %pI4.\n",
638 bond
->dev
->name
, &newtarget
);
639 for (j
= i
; (j
< (BOND_MAX_ARP_TARGETS
-1)) && targets
[j
+1]; j
++)
640 targets
[j
] = targets
[j
+1];
647 pr_info("%s: unable to remove nonexistent ARP target %pI4.\n",
648 bond
->dev
->name
, &newtarget
);
653 pr_err("no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n",
662 static DEVICE_ATTR(arp_ip_target
, S_IRUGO
| S_IWUSR
, bonding_show_arp_targets
, bonding_store_arp_targets
);
665 * Show and set the up and down delays. These must be multiples of the
666 * MII monitoring value, and are stored internally as the multiplier.
667 * Thus, we must translate to MS for the real world.
669 static ssize_t
bonding_show_downdelay(struct device
*d
,
670 struct device_attribute
*attr
,
673 struct bonding
*bond
= to_bond(d
);
675 return sprintf(buf
, "%d\n", bond
->params
.downdelay
* bond
->params
.miimon
);
678 static ssize_t
bonding_store_downdelay(struct device
*d
,
679 struct device_attribute
*attr
,
680 const char *buf
, size_t count
)
682 int new_value
, ret
= count
;
683 struct bonding
*bond
= to_bond(d
);
685 if (!(bond
->params
.miimon
)) {
686 pr_err("%s: Unable to set down delay as MII monitoring is disabled\n",
692 if (sscanf(buf
, "%d", &new_value
) != 1) {
693 pr_err("%s: no down delay value specified.\n", bond
->dev
->name
);
698 pr_err("%s: Invalid down delay value %d not in range %d-%d; rejected.\n",
699 bond
->dev
->name
, new_value
, 1, INT_MAX
);
703 if ((new_value
% bond
->params
.miimon
) != 0) {
704 pr_warning("%s: Warning: down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n",
705 bond
->dev
->name
, new_value
,
707 (new_value
/ bond
->params
.miimon
) *
708 bond
->params
.miimon
);
710 bond
->params
.downdelay
= new_value
/ bond
->params
.miimon
;
711 pr_info("%s: Setting down delay to %d.\n",
713 bond
->params
.downdelay
* bond
->params
.miimon
);
720 static DEVICE_ATTR(downdelay
, S_IRUGO
| S_IWUSR
,
721 bonding_show_downdelay
, bonding_store_downdelay
);
723 static ssize_t
bonding_show_updelay(struct device
*d
,
724 struct device_attribute
*attr
,
727 struct bonding
*bond
= to_bond(d
);
729 return sprintf(buf
, "%d\n", bond
->params
.updelay
* bond
->params
.miimon
);
733 static ssize_t
bonding_store_updelay(struct device
*d
,
734 struct device_attribute
*attr
,
735 const char *buf
, size_t count
)
737 int new_value
, ret
= count
;
738 struct bonding
*bond
= to_bond(d
);
740 if (!(bond
->params
.miimon
)) {
741 pr_err("%s: Unable to set up delay as MII monitoring is disabled\n",
747 if (sscanf(buf
, "%d", &new_value
) != 1) {
748 pr_err("%s: no up delay value specified.\n",
754 pr_err("%s: Invalid down delay value %d not in range %d-%d; rejected.\n",
755 bond
->dev
->name
, new_value
, 1, INT_MAX
);
759 if ((new_value
% bond
->params
.miimon
) != 0) {
760 pr_warning("%s: Warning: up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n",
761 bond
->dev
->name
, new_value
,
763 (new_value
/ bond
->params
.miimon
) *
764 bond
->params
.miimon
);
766 bond
->params
.updelay
= new_value
/ bond
->params
.miimon
;
767 pr_info("%s: Setting up delay to %d.\n",
769 bond
->params
.updelay
* bond
->params
.miimon
);
775 static DEVICE_ATTR(updelay
, S_IRUGO
| S_IWUSR
,
776 bonding_show_updelay
, bonding_store_updelay
);
779 * Show and set the LACP interval. Interface must be down, and the mode
780 * must be set to 802.3ad mode.
782 static ssize_t
bonding_show_lacp(struct device
*d
,
783 struct device_attribute
*attr
,
786 struct bonding
*bond
= to_bond(d
);
788 return sprintf(buf
, "%s %d\n",
789 bond_lacp_tbl
[bond
->params
.lacp_fast
].modename
,
790 bond
->params
.lacp_fast
);
793 static ssize_t
bonding_store_lacp(struct device
*d
,
794 struct device_attribute
*attr
,
795 const char *buf
, size_t count
)
797 int new_value
, ret
= count
;
798 struct bonding
*bond
= to_bond(d
);
800 if (bond
->dev
->flags
& IFF_UP
) {
801 pr_err("%s: Unable to update LACP rate because interface is up.\n",
807 if (bond
->params
.mode
!= BOND_MODE_8023AD
) {
808 pr_err("%s: Unable to update LACP rate because bond is not in 802.3ad mode.\n",
814 new_value
= bond_parse_parm(buf
, bond_lacp_tbl
);
816 if ((new_value
== 1) || (new_value
== 0)) {
817 bond
->params
.lacp_fast
= new_value
;
818 pr_info("%s: Setting LACP rate to %s (%d).\n",
819 bond
->dev
->name
, bond_lacp_tbl
[new_value
].modename
,
822 pr_err("%s: Ignoring invalid LACP rate value %.*s.\n",
823 bond
->dev
->name
, (int)strlen(buf
) - 1, buf
);
829 static DEVICE_ATTR(lacp_rate
, S_IRUGO
| S_IWUSR
,
830 bonding_show_lacp
, bonding_store_lacp
);
832 static ssize_t
bonding_show_ad_select(struct device
*d
,
833 struct device_attribute
*attr
,
836 struct bonding
*bond
= to_bond(d
);
838 return sprintf(buf
, "%s %d\n",
839 ad_select_tbl
[bond
->params
.ad_select
].modename
,
840 bond
->params
.ad_select
);
844 static ssize_t
bonding_store_ad_select(struct device
*d
,
845 struct device_attribute
*attr
,
846 const char *buf
, size_t count
)
848 int new_value
, ret
= count
;
849 struct bonding
*bond
= to_bond(d
);
851 if (bond
->dev
->flags
& IFF_UP
) {
852 pr_err("%s: Unable to update ad_select because interface is up.\n",
858 new_value
= bond_parse_parm(buf
, ad_select_tbl
);
860 if (new_value
!= -1) {
861 bond
->params
.ad_select
= new_value
;
862 pr_info("%s: Setting ad_select to %s (%d).\n",
863 bond
->dev
->name
, ad_select_tbl
[new_value
].modename
,
866 pr_err("%s: Ignoring invalid ad_select value %.*s.\n",
867 bond
->dev
->name
, (int)strlen(buf
) - 1, buf
);
873 static DEVICE_ATTR(ad_select
, S_IRUGO
| S_IWUSR
,
874 bonding_show_ad_select
, bonding_store_ad_select
);
877 * Show and set the MII monitor interval. There are two tricky bits
878 * here. First, if MII monitoring is activated, then we must disable
879 * ARP monitoring. Second, if the timer isn't running, we must
882 static ssize_t
bonding_show_miimon(struct device
*d
,
883 struct device_attribute
*attr
,
886 struct bonding
*bond
= to_bond(d
);
888 return sprintf(buf
, "%d\n", bond
->params
.miimon
);
891 static ssize_t
bonding_store_miimon(struct device
*d
,
892 struct device_attribute
*attr
,
893 const char *buf
, size_t count
)
895 int new_value
, ret
= count
;
896 struct bonding
*bond
= to_bond(d
);
898 if (sscanf(buf
, "%d", &new_value
) != 1) {
899 pr_err("%s: no miimon value specified.\n",
905 pr_err("%s: Invalid miimon value %d not in range %d-%d; rejected.\n",
906 bond
->dev
->name
, new_value
, 1, INT_MAX
);
910 pr_info("%s: Setting MII monitoring interval to %d.\n",
911 bond
->dev
->name
, new_value
);
912 bond
->params
.miimon
= new_value
;
913 if (bond
->params
.updelay
)
914 pr_info("%s: Note: Updating updelay (to %d) since it is a multiple of the miimon value.\n",
916 bond
->params
.updelay
* bond
->params
.miimon
);
917 if (bond
->params
.downdelay
)
918 pr_info("%s: Note: Updating downdelay (to %d) since it is a multiple of the miimon value.\n",
920 bond
->params
.downdelay
* bond
->params
.miimon
);
921 if (bond
->params
.arp_interval
) {
922 pr_info("%s: MII monitoring cannot be used with ARP monitoring. Disabling ARP monitoring...\n",
924 bond
->params
.arp_interval
= 0;
925 if (bond
->params
.arp_validate
) {
926 bond_unregister_arp(bond
);
927 bond
->params
.arp_validate
=
928 BOND_ARP_VALIDATE_NONE
;
930 if (delayed_work_pending(&bond
->arp_work
)) {
931 cancel_delayed_work(&bond
->arp_work
);
932 flush_workqueue(bond
->wq
);
936 if (bond
->dev
->flags
& IFF_UP
) {
937 /* If the interface is up, we may need to fire off
938 * the MII timer. If the interface is down, the
939 * timer will get fired off when the open function
942 if (!delayed_work_pending(&bond
->mii_work
)) {
943 INIT_DELAYED_WORK(&bond
->mii_work
,
945 queue_delayed_work(bond
->wq
,
953 static DEVICE_ATTR(miimon
, S_IRUGO
| S_IWUSR
,
954 bonding_show_miimon
, bonding_store_miimon
);
957 * Show and set the primary slave. The store function is much
958 * simpler than bonding_store_slaves function because it only needs to
959 * handle one interface name.
960 * The bond must be a mode that supports a primary for this be
963 static ssize_t
bonding_show_primary(struct device
*d
,
964 struct device_attribute
*attr
,
968 struct bonding
*bond
= to_bond(d
);
970 if (bond
->primary_slave
)
971 count
= sprintf(buf
, "%s\n", bond
->primary_slave
->dev
->name
);
976 static ssize_t
bonding_store_primary(struct device
*d
,
977 struct device_attribute
*attr
,
978 const char *buf
, size_t count
)
982 struct bonding
*bond
= to_bond(d
);
985 return restart_syscall();
987 read_lock(&bond
->lock
);
988 write_lock_bh(&bond
->curr_slave_lock
);
990 if (!USES_PRIMARY(bond
->params
.mode
)) {
991 pr_info("%s: Unable to set primary slave; %s is in mode %d\n",
992 bond
->dev
->name
, bond
->dev
->name
, bond
->params
.mode
);
994 bond_for_each_slave(bond
, slave
, i
) {
996 (slave
->dev
->name
, buf
,
997 strlen(slave
->dev
->name
)) == 0) {
998 pr_info("%s: Setting %s as primary slave.\n",
999 bond
->dev
->name
, slave
->dev
->name
);
1000 bond
->primary_slave
= slave
;
1001 strcpy(bond
->params
.primary
, slave
->dev
->name
);
1002 bond_select_active_slave(bond
);
1007 /* if we got here, then we didn't match the name of any slave */
1009 if (strlen(buf
) == 0 || buf
[0] == '\n') {
1010 pr_info("%s: Setting primary slave to None.\n",
1012 bond
->primary_slave
= NULL
;
1013 bond_select_active_slave(bond
);
1015 pr_info("%s: Unable to set %.*s as primary slave as it is not a slave.\n",
1016 bond
->dev
->name
, (int)strlen(buf
) - 1, buf
);
1020 write_unlock_bh(&bond
->curr_slave_lock
);
1021 read_unlock(&bond
->lock
);
1022 unblock_netpoll_tx();
1027 static DEVICE_ATTR(primary
, S_IRUGO
| S_IWUSR
,
1028 bonding_show_primary
, bonding_store_primary
);
1031 * Show and set the primary_reselect flag.
1033 static ssize_t
bonding_show_primary_reselect(struct device
*d
,
1034 struct device_attribute
*attr
,
1037 struct bonding
*bond
= to_bond(d
);
1039 return sprintf(buf
, "%s %d\n",
1040 pri_reselect_tbl
[bond
->params
.primary_reselect
].modename
,
1041 bond
->params
.primary_reselect
);
1044 static ssize_t
bonding_store_primary_reselect(struct device
*d
,
1045 struct device_attribute
*attr
,
1046 const char *buf
, size_t count
)
1048 int new_value
, ret
= count
;
1049 struct bonding
*bond
= to_bond(d
);
1051 if (!rtnl_trylock())
1052 return restart_syscall();
1054 new_value
= bond_parse_parm(buf
, pri_reselect_tbl
);
1055 if (new_value
< 0) {
1056 pr_err("%s: Ignoring invalid primary_reselect value %.*s.\n",
1058 (int) strlen(buf
) - 1, buf
);
1063 bond
->params
.primary_reselect
= new_value
;
1064 pr_info("%s: setting primary_reselect to %s (%d).\n",
1065 bond
->dev
->name
, pri_reselect_tbl
[new_value
].modename
,
1069 read_lock(&bond
->lock
);
1070 write_lock_bh(&bond
->curr_slave_lock
);
1071 bond_select_active_slave(bond
);
1072 write_unlock_bh(&bond
->curr_slave_lock
);
1073 read_unlock(&bond
->lock
);
1074 unblock_netpoll_tx();
1079 static DEVICE_ATTR(primary_reselect
, S_IRUGO
| S_IWUSR
,
1080 bonding_show_primary_reselect
,
1081 bonding_store_primary_reselect
);
1084 * Show and set the use_carrier flag.
1086 static ssize_t
bonding_show_carrier(struct device
*d
,
1087 struct device_attribute
*attr
,
1090 struct bonding
*bond
= to_bond(d
);
1092 return sprintf(buf
, "%d\n", bond
->params
.use_carrier
);
1095 static ssize_t
bonding_store_carrier(struct device
*d
,
1096 struct device_attribute
*attr
,
1097 const char *buf
, size_t count
)
1099 int new_value
, ret
= count
;
1100 struct bonding
*bond
= to_bond(d
);
1103 if (sscanf(buf
, "%d", &new_value
) != 1) {
1104 pr_err("%s: no use_carrier value specified.\n",
1109 if ((new_value
== 0) || (new_value
== 1)) {
1110 bond
->params
.use_carrier
= new_value
;
1111 pr_info("%s: Setting use_carrier to %d.\n",
1112 bond
->dev
->name
, new_value
);
1114 pr_info("%s: Ignoring invalid use_carrier value %d.\n",
1115 bond
->dev
->name
, new_value
);
1120 static DEVICE_ATTR(use_carrier
, S_IRUGO
| S_IWUSR
,
1121 bonding_show_carrier
, bonding_store_carrier
);
1125 * Show and set currently active_slave.
1127 static ssize_t
bonding_show_active_slave(struct device
*d
,
1128 struct device_attribute
*attr
,
1132 struct bonding
*bond
= to_bond(d
);
1135 read_lock(&bond
->curr_slave_lock
);
1136 curr
= bond
->curr_active_slave
;
1137 read_unlock(&bond
->curr_slave_lock
);
1139 if (USES_PRIMARY(bond
->params
.mode
) && curr
)
1140 count
= sprintf(buf
, "%s\n", curr
->dev
->name
);
1144 static ssize_t
bonding_store_active_slave(struct device
*d
,
1145 struct device_attribute
*attr
,
1146 const char *buf
, size_t count
)
1149 struct slave
*slave
;
1150 struct slave
*old_active
= NULL
;
1151 struct slave
*new_active
= NULL
;
1152 struct bonding
*bond
= to_bond(d
);
1154 if (!rtnl_trylock())
1155 return restart_syscall();
1158 read_lock(&bond
->lock
);
1159 write_lock_bh(&bond
->curr_slave_lock
);
1161 if (!USES_PRIMARY(bond
->params
.mode
))
1162 pr_info("%s: Unable to change active slave; %s is in mode %d\n",
1163 bond
->dev
->name
, bond
->dev
->name
, bond
->params
.mode
);
1165 bond_for_each_slave(bond
, slave
, i
) {
1167 (slave
->dev
->name
, buf
,
1168 strlen(slave
->dev
->name
)) == 0) {
1169 old_active
= bond
->curr_active_slave
;
1171 if (new_active
== old_active
) {
1173 pr_info("%s: %s is already the current active slave.\n",
1181 (new_active
->link
== BOND_LINK_UP
) &&
1182 IS_UP(new_active
->dev
)) {
1183 pr_info("%s: Setting %s as active slave.\n",
1186 bond_change_active_slave(bond
, new_active
);
1189 pr_info("%s: Could not set %s as active slave; either %s is down or the link is down.\n",
1199 /* if we got here, then we didn't match the name of any slave */
1201 if (strlen(buf
) == 0 || buf
[0] == '\n') {
1202 pr_info("%s: Setting active slave to None.\n",
1204 bond
->primary_slave
= NULL
;
1205 bond_select_active_slave(bond
);
1207 pr_info("%s: Unable to set %.*s as active slave as it is not a slave.\n",
1208 bond
->dev
->name
, (int)strlen(buf
) - 1, buf
);
1212 write_unlock_bh(&bond
->curr_slave_lock
);
1213 read_unlock(&bond
->lock
);
1214 unblock_netpoll_tx();
1221 static DEVICE_ATTR(active_slave
, S_IRUGO
| S_IWUSR
,
1222 bonding_show_active_slave
, bonding_store_active_slave
);
1226 * Show link status of the bond interface.
1228 static ssize_t
bonding_show_mii_status(struct device
*d
,
1229 struct device_attribute
*attr
,
1233 struct bonding
*bond
= to_bond(d
);
1235 read_lock(&bond
->curr_slave_lock
);
1236 curr
= bond
->curr_active_slave
;
1237 read_unlock(&bond
->curr_slave_lock
);
1239 return sprintf(buf
, "%s\n", curr
? "up" : "down");
1241 static DEVICE_ATTR(mii_status
, S_IRUGO
, bonding_show_mii_status
, NULL
);
1245 * Show current 802.3ad aggregator ID.
1247 static ssize_t
bonding_show_ad_aggregator(struct device
*d
,
1248 struct device_attribute
*attr
,
1252 struct bonding
*bond
= to_bond(d
);
1254 if (bond
->params
.mode
== BOND_MODE_8023AD
) {
1255 struct ad_info ad_info
;
1256 count
= sprintf(buf
, "%d\n",
1257 (bond_3ad_get_active_agg_info(bond
, &ad_info
))
1258 ? 0 : ad_info
.aggregator_id
);
1263 static DEVICE_ATTR(ad_aggregator
, S_IRUGO
, bonding_show_ad_aggregator
, NULL
);
1267 * Show number of active 802.3ad ports.
1269 static ssize_t
bonding_show_ad_num_ports(struct device
*d
,
1270 struct device_attribute
*attr
,
1274 struct bonding
*bond
= to_bond(d
);
1276 if (bond
->params
.mode
== BOND_MODE_8023AD
) {
1277 struct ad_info ad_info
;
1278 count
= sprintf(buf
, "%d\n",
1279 (bond_3ad_get_active_agg_info(bond
, &ad_info
))
1280 ? 0 : ad_info
.ports
);
1285 static DEVICE_ATTR(ad_num_ports
, S_IRUGO
, bonding_show_ad_num_ports
, NULL
);
1289 * Show current 802.3ad actor key.
1291 static ssize_t
bonding_show_ad_actor_key(struct device
*d
,
1292 struct device_attribute
*attr
,
1296 struct bonding
*bond
= to_bond(d
);
1298 if (bond
->params
.mode
== BOND_MODE_8023AD
) {
1299 struct ad_info ad_info
;
1300 count
= sprintf(buf
, "%d\n",
1301 (bond_3ad_get_active_agg_info(bond
, &ad_info
))
1302 ? 0 : ad_info
.actor_key
);
1307 static DEVICE_ATTR(ad_actor_key
, S_IRUGO
, bonding_show_ad_actor_key
, NULL
);
1311 * Show current 802.3ad partner key.
1313 static ssize_t
bonding_show_ad_partner_key(struct device
*d
,
1314 struct device_attribute
*attr
,
1318 struct bonding
*bond
= to_bond(d
);
1320 if (bond
->params
.mode
== BOND_MODE_8023AD
) {
1321 struct ad_info ad_info
;
1322 count
= sprintf(buf
, "%d\n",
1323 (bond_3ad_get_active_agg_info(bond
, &ad_info
))
1324 ? 0 : ad_info
.partner_key
);
1329 static DEVICE_ATTR(ad_partner_key
, S_IRUGO
, bonding_show_ad_partner_key
, NULL
);
1333 * Show current 802.3ad partner mac.
1335 static ssize_t
bonding_show_ad_partner_mac(struct device
*d
,
1336 struct device_attribute
*attr
,
1340 struct bonding
*bond
= to_bond(d
);
1342 if (bond
->params
.mode
== BOND_MODE_8023AD
) {
1343 struct ad_info ad_info
;
1344 if (!bond_3ad_get_active_agg_info(bond
, &ad_info
))
1345 count
= sprintf(buf
, "%pM\n", ad_info
.partner_system
);
1350 static DEVICE_ATTR(ad_partner_mac
, S_IRUGO
, bonding_show_ad_partner_mac
, NULL
);
1353 * Show the queue_ids of the slaves in the current bond.
1355 static ssize_t
bonding_show_queue_id(struct device
*d
,
1356 struct device_attribute
*attr
,
1359 struct slave
*slave
;
1361 struct bonding
*bond
= to_bond(d
);
1363 if (!rtnl_trylock())
1364 return restart_syscall();
1366 read_lock(&bond
->lock
);
1367 bond_for_each_slave(bond
, slave
, i
) {
1368 if (res
> (PAGE_SIZE
- IFNAMSIZ
- 6)) {
1369 /* not enough space for another interface_name:queue_id pair */
1370 if ((PAGE_SIZE
- res
) > 10)
1371 res
= PAGE_SIZE
- 10;
1372 res
+= sprintf(buf
+ res
, "++more++ ");
1375 res
+= sprintf(buf
+ res
, "%s:%d ",
1376 slave
->dev
->name
, slave
->queue_id
);
1378 read_unlock(&bond
->lock
);
1380 buf
[res
-1] = '\n'; /* eat the leftover space */
1386 * Set the queue_ids of the slaves in the current bond. The bond
1387 * interface must be enslaved for this to work.
1389 static ssize_t
bonding_store_queue_id(struct device
*d
,
1390 struct device_attribute
*attr
,
1391 const char *buffer
, size_t count
)
1393 struct slave
*slave
, *update_slave
;
1394 struct bonding
*bond
= to_bond(d
);
1398 struct net_device
*sdev
= NULL
;
1400 if (!rtnl_trylock())
1401 return restart_syscall();
1403 /* delim will point to queue id if successful */
1404 delim
= strchr(buffer
, ':');
1409 * Terminate string that points to device name and bump it
1410 * up one, so we can read the queue id there.
1413 if (sscanf(++delim
, "%hd\n", &qid
) != 1)
1416 /* Check buffer length, valid ifname and queue id */
1417 if (strlen(buffer
) > IFNAMSIZ
||
1418 !dev_valid_name(buffer
) ||
1419 qid
> bond
->params
.tx_queues
)
1422 /* Get the pointer to that interface if it exists */
1423 sdev
= __dev_get_by_name(dev_net(bond
->dev
), buffer
);
1427 read_lock(&bond
->lock
);
1429 /* Search for thes slave and check for duplicate qids */
1430 update_slave
= NULL
;
1431 bond_for_each_slave(bond
, slave
, i
) {
1432 if (sdev
== slave
->dev
)
1434 * We don't need to check the matching
1435 * slave for dups, since we're overwriting it
1437 update_slave
= slave
;
1438 else if (qid
&& qid
== slave
->queue_id
) {
1439 goto err_no_cmd_unlock
;
1444 goto err_no_cmd_unlock
;
1446 /* Actually set the qids for the slave */
1447 update_slave
->queue_id
= qid
;
1449 read_unlock(&bond
->lock
);
1455 read_unlock(&bond
->lock
);
1457 pr_info("invalid input for queue_id set for %s.\n",
1463 static DEVICE_ATTR(queue_id
, S_IRUGO
| S_IWUSR
, bonding_show_queue_id
,
1464 bonding_store_queue_id
);
1468 * Show and set the all_slaves_active flag.
1470 static ssize_t
bonding_show_slaves_active(struct device
*d
,
1471 struct device_attribute
*attr
,
1474 struct bonding
*bond
= to_bond(d
);
1476 return sprintf(buf
, "%d\n", bond
->params
.all_slaves_active
);
1479 static ssize_t
bonding_store_slaves_active(struct device
*d
,
1480 struct device_attribute
*attr
,
1481 const char *buf
, size_t count
)
1483 int i
, new_value
, ret
= count
;
1484 struct bonding
*bond
= to_bond(d
);
1485 struct slave
*slave
;
1487 if (sscanf(buf
, "%d", &new_value
) != 1) {
1488 pr_err("%s: no all_slaves_active value specified.\n",
1494 if (new_value
== bond
->params
.all_slaves_active
)
1497 if ((new_value
== 0) || (new_value
== 1)) {
1498 bond
->params
.all_slaves_active
= new_value
;
1500 pr_info("%s: Ignoring invalid all_slaves_active value %d.\n",
1501 bond
->dev
->name
, new_value
);
1506 bond_for_each_slave(bond
, slave
, i
) {
1507 if (!bond_is_active_slave(slave
)) {
1509 slave
->inactive
= 0;
1511 slave
->inactive
= 1;
1517 static DEVICE_ATTR(all_slaves_active
, S_IRUGO
| S_IWUSR
,
1518 bonding_show_slaves_active
, bonding_store_slaves_active
);
1521 * Show and set the number of IGMP membership reports to send on link failure
1523 static ssize_t
bonding_show_resend_igmp(struct device
*d
,
1524 struct device_attribute
*attr
,
1527 struct bonding
*bond
= to_bond(d
);
1529 return sprintf(buf
, "%d\n", bond
->params
.resend_igmp
);
1532 static ssize_t
bonding_store_resend_igmp(struct device
*d
,
1533 struct device_attribute
*attr
,
1534 const char *buf
, size_t count
)
1536 int new_value
, ret
= count
;
1537 struct bonding
*bond
= to_bond(d
);
1539 if (sscanf(buf
, "%d", &new_value
) != 1) {
1540 pr_err("%s: no resend_igmp value specified.\n",
1546 if (new_value
< 0) {
1547 pr_err("%s: Invalid resend_igmp value %d not in range 0-255; rejected.\n",
1548 bond
->dev
->name
, new_value
);
1553 pr_info("%s: Setting resend_igmp to %d.\n",
1554 bond
->dev
->name
, new_value
);
1555 bond
->params
.resend_igmp
= new_value
;
1560 static DEVICE_ATTR(resend_igmp
, S_IRUGO
| S_IWUSR
,
1561 bonding_show_resend_igmp
, bonding_store_resend_igmp
);
1563 static struct attribute
*per_bond_attrs
[] = {
1564 &dev_attr_slaves
.attr
,
1565 &dev_attr_mode
.attr
,
1566 &dev_attr_fail_over_mac
.attr
,
1567 &dev_attr_arp_validate
.attr
,
1568 &dev_attr_arp_interval
.attr
,
1569 &dev_attr_arp_ip_target
.attr
,
1570 &dev_attr_downdelay
.attr
,
1571 &dev_attr_updelay
.attr
,
1572 &dev_attr_lacp_rate
.attr
,
1573 &dev_attr_ad_select
.attr
,
1574 &dev_attr_xmit_hash_policy
.attr
,
1575 &dev_attr_miimon
.attr
,
1576 &dev_attr_primary
.attr
,
1577 &dev_attr_primary_reselect
.attr
,
1578 &dev_attr_use_carrier
.attr
,
1579 &dev_attr_active_slave
.attr
,
1580 &dev_attr_mii_status
.attr
,
1581 &dev_attr_ad_aggregator
.attr
,
1582 &dev_attr_ad_num_ports
.attr
,
1583 &dev_attr_ad_actor_key
.attr
,
1584 &dev_attr_ad_partner_key
.attr
,
1585 &dev_attr_ad_partner_mac
.attr
,
1586 &dev_attr_queue_id
.attr
,
1587 &dev_attr_all_slaves_active
.attr
,
1588 &dev_attr_resend_igmp
.attr
,
1592 static struct attribute_group bonding_group
= {
1594 .attrs
= per_bond_attrs
,
1598 * Initialize sysfs. This sets up the bonding_masters file in
1601 int bond_create_sysfs(void)
1605 ret
= netdev_class_create_file(&class_attr_bonding_masters
);
1607 * Permit multiple loads of the module by ignoring failures to
1608 * create the bonding_masters sysfs file. Bonding devices
1609 * created by second or subsequent loads of the module will
1610 * not be listed in, or controllable by, bonding_masters, but
1611 * will have the usual "bonding" sysfs directory.
1613 * This is done to preserve backwards compatibility for
1614 * initscripts/sysconfig, which load bonding multiple times to
1615 * configure multiple bonding devices.
1617 if (ret
== -EEXIST
) {
1618 /* Is someone being kinky and naming a device bonding_master? */
1619 if (__dev_get_by_name(&init_net
,
1620 class_attr_bonding_masters
.attr
.name
))
1621 pr_err("network device named %s already exists in sysfs",
1622 class_attr_bonding_masters
.attr
.name
);
1631 * Remove /sys/class/net/bonding_masters.
1633 void bond_destroy_sysfs(void)
1635 netdev_class_remove_file(&class_attr_bonding_masters
);
1639 * Initialize sysfs for each bond. This sets up and registers
1640 * the 'bondctl' directory for each individual bond under /sys/class/net.
1642 void bond_prepare_sysfs_group(struct bonding
*bond
)
1644 bond
->dev
->sysfs_groups
[0] = &bonding_group
;