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22#include <linux/kernel.h>
23#include <linux/module.h>
24#include <linux/device.h>
25#include <linux/sched.h>
26#include <linux/sysdev.h>
27#include <linux/fs.h>
28#include <linux/types.h>
29#include <linux/string.h>
30#include <linux/netdevice.h>
31#include <linux/inetdevice.h>
32#include <linux/in.h>
33#include <linux/sysfs.h>
34#include <linux/ctype.h>
35#include <linux/inet.h>
36#include <linux/rtnetlink.h>
37#include <linux/etherdevice.h>
38#include <net/net_namespace.h>
39
40#include "bonding.h"
41
42#define to_dev(obj) container_of(obj, struct device, kobj)
43#define to_bond(cd) ((struct bonding *)(netdev_priv(to_net_dev(cd))))
44
45
46
47
48
49static ssize_t bonding_show_bonds(struct class *cls, char *buf)
50{
51 int res = 0;
52 struct bonding *bond;
53
54 rtnl_lock();
55
56 list_for_each_entry(bond, &bond_dev_list, bond_list) {
57 if (res > (PAGE_SIZE - IFNAMSIZ)) {
58
59 if ((PAGE_SIZE - res) > 10)
60 res = PAGE_SIZE - 10;
61 res += sprintf(buf + res, "++more++ ");
62 break;
63 }
64 res += sprintf(buf + res, "%s ", bond->dev->name);
65 }
66 if (res)
67 buf[res-1] = '\n';
68
69 rtnl_unlock();
70 return res;
71}
72
73static struct net_device *bond_get_by_name(const char *ifname)
74{
75 struct bonding *bond;
76
77 list_for_each_entry(bond, &bond_dev_list, bond_list) {
78 if (strncmp(bond->dev->name, ifname, IFNAMSIZ) == 0)
79 return bond->dev;
80 }
81 return NULL;
82}
83
84
85
86
87
88
89
90
91
92static ssize_t bonding_store_bonds(struct class *cls,
93 const char *buffer, size_t count)
94{
95 char command[IFNAMSIZ + 1] = {0, };
96 char *ifname;
97 int rv, res = count;
98
99 sscanf(buffer, "%16s", command);
100 ifname = command + 1;
101 if ((strlen(command) <= 1) ||
102 !dev_valid_name(ifname))
103 goto err_no_cmd;
104
105 if (command[0] == '+') {
106 pr_info(DRV_NAME
107 ": %s is being created...\n", ifname);
108 rv = bond_create(ifname);
109 if (rv) {
110 pr_info(DRV_NAME ": Bond creation failed.\n");
111 res = rv;
112 }
113 } else if (command[0] == '-') {
114 struct net_device *bond_dev;
115
116 rtnl_lock();
117 bond_dev = bond_get_by_name(ifname);
118 if (bond_dev) {
119 pr_info(DRV_NAME ": %s is being deleted...\n",
120 ifname);
121 unregister_netdevice(bond_dev);
122 } else {
123 pr_err(DRV_NAME ": unable to delete non-existent %s\n",
124 ifname);
125 res = -ENODEV;
126 }
127 rtnl_unlock();
128 } else
129 goto err_no_cmd;
130
131
132
133
134 return res;
135
136err_no_cmd:
137 pr_err(DRV_NAME ": no command found in bonding_masters."
138 " Use +ifname or -ifname.\n");
139 return -EPERM;
140}
141
142
143static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO,
144 bonding_show_bonds, bonding_store_bonds);
145
146int bond_create_slave_symlinks(struct net_device *master,
147 struct net_device *slave)
148{
149 char linkname[IFNAMSIZ+7];
150 int ret = 0;
151
152
153 ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj),
154 "master");
155 if (ret)
156 return ret;
157
158 sprintf(linkname, "slave_%s", slave->name);
159 ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj),
160 linkname);
161 return ret;
162
163}
164
165void bond_destroy_slave_symlinks(struct net_device *master,
166 struct net_device *slave)
167{
168 char linkname[IFNAMSIZ+7];
169
170 sysfs_remove_link(&(slave->dev.kobj), "master");
171 sprintf(linkname, "slave_%s", slave->name);
172 sysfs_remove_link(&(master->dev.kobj), linkname);
173}
174
175
176
177
178
179static ssize_t bonding_show_slaves(struct device *d,
180 struct device_attribute *attr, char *buf)
181{
182 struct slave *slave;
183 int i, res = 0;
184 struct bonding *bond = to_bond(d);
185
186 read_lock(&bond->lock);
187 bond_for_each_slave(bond, slave, i) {
188 if (res > (PAGE_SIZE - IFNAMSIZ)) {
189
190 if ((PAGE_SIZE - res) > 10)
191 res = PAGE_SIZE - 10;
192 res += sprintf(buf + res, "++more++ ");
193 break;
194 }
195 res += sprintf(buf + res, "%s ", slave->dev->name);
196 }
197 read_unlock(&bond->lock);
198 if (res)
199 buf[res-1] = '\n';
200 return res;
201}
202
203
204
205
206
207
208static ssize_t bonding_store_slaves(struct device *d,
209 struct device_attribute *attr,
210 const char *buffer, size_t count)
211{
212 char command[IFNAMSIZ + 1] = { 0, };
213 char *ifname;
214 int i, res, found, ret = count;
215 u32 original_mtu;
216 struct slave *slave;
217 struct net_device *dev = NULL;
218 struct bonding *bond = to_bond(d);
219
220
221 if (!(bond->dev->flags & IFF_UP)) {
222 pr_warning(DRV_NAME ": %s: doing slave updates when "
223 "interface is down.\n", bond->dev->name);
224 }
225
226
227
228 if (!rtnl_trylock())
229 return restart_syscall();
230
231 sscanf(buffer, "%16s", command);
232 ifname = command + 1;
233 if ((strlen(command) <= 1) ||
234 !dev_valid_name(ifname))
235 goto err_no_cmd;
236
237 if (command[0] == '+') {
238
239
240 found = 0;
241
242
243 dev = __dev_get_by_name(&init_net, ifname);
244 if (!dev) {
245 pr_info(DRV_NAME
246 ": %s: Interface %s does not exist!\n",
247 bond->dev->name, ifname);
248 ret = -ENODEV;
249 goto out;
250 }
251
252 if (dev->flags & IFF_UP) {
253 pr_err(DRV_NAME
254 ": %s: Error: Unable to enslave %s "
255 "because it is already up.\n",
256 bond->dev->name, dev->name);
257 ret = -EPERM;
258 goto out;
259 }
260
261 read_lock(&bond->lock);
262 bond_for_each_slave(bond, slave, i)
263 if (slave->dev == dev) {
264 pr_err(DRV_NAME
265 ": %s: Interface %s is already enslaved!\n",
266 bond->dev->name, ifname);
267 ret = -EPERM;
268 read_unlock(&bond->lock);
269 goto out;
270 }
271 read_unlock(&bond->lock);
272
273 pr_info(DRV_NAME ": %s: Adding slave %s.\n",
274 bond->dev->name, ifname);
275
276
277
278
279 if (is_zero_ether_addr(bond->dev->dev_addr))
280 memcpy(bond->dev->dev_addr, dev->dev_addr,
281 dev->addr_len);
282
283
284 original_mtu = dev->mtu;
285 res = dev_set_mtu(dev, bond->dev->mtu);
286 if (res) {
287 ret = res;
288 goto out;
289 }
290
291 res = bond_enslave(bond->dev, dev);
292 bond_for_each_slave(bond, slave, i)
293 if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0)
294 slave->original_mtu = original_mtu;
295 if (res)
296 ret = res;
297
298 goto out;
299 }
300
301 if (command[0] == '-') {
302 dev = NULL;
303 original_mtu = 0;
304 bond_for_each_slave(bond, slave, i)
305 if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
306 dev = slave->dev;
307 original_mtu = slave->original_mtu;
308 break;
309 }
310 if (dev) {
311 pr_info(DRV_NAME ": %s: Removing slave %s\n",
312 bond->dev->name, dev->name);
313 res = bond_release(bond->dev, dev);
314 if (res) {
315 ret = res;
316 goto out;
317 }
318
319 dev_set_mtu(dev, original_mtu);
320 } else {
321 pr_err(DRV_NAME ": unable to remove non-existent"
322 " slave %s for bond %s.\n",
323 ifname, bond->dev->name);
324 ret = -ENODEV;
325 }
326 goto out;
327 }
328
329err_no_cmd:
330 pr_err(DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name);
331 ret = -EPERM;
332
333out:
334 rtnl_unlock();
335 return ret;
336}
337
338static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves,
339 bonding_store_slaves);
340
341
342
343
344
345static ssize_t bonding_show_mode(struct device *d,
346 struct device_attribute *attr, char *buf)
347{
348 struct bonding *bond = to_bond(d);
349
350 return sprintf(buf, "%s %d\n",
351 bond_mode_tbl[bond->params.mode].modename,
352 bond->params.mode);
353}
354
355static ssize_t bonding_store_mode(struct device *d,
356 struct device_attribute *attr,
357 const char *buf, size_t count)
358{
359 int new_value, ret = count;
360 struct bonding *bond = to_bond(d);
361
362 if (bond->dev->flags & IFF_UP) {
363 pr_err(DRV_NAME ": unable to update mode of %s"
364 " because interface is up.\n", bond->dev->name);
365 ret = -EPERM;
366 goto out;
367 }
368
369 new_value = bond_parse_parm(buf, bond_mode_tbl);
370 if (new_value < 0) {
371 pr_err(DRV_NAME
372 ": %s: Ignoring invalid mode value %.*s.\n",
373 bond->dev->name,
374 (int)strlen(buf) - 1, buf);
375 ret = -EINVAL;
376 goto out;
377 } else {
378 if (bond->params.mode == BOND_MODE_8023AD)
379 bond_unset_master_3ad_flags(bond);
380
381 if (bond->params.mode == BOND_MODE_ALB)
382 bond_unset_master_alb_flags(bond);
383
384 bond->params.mode = new_value;
385 bond_set_mode_ops(bond, bond->params.mode);
386 pr_info(DRV_NAME ": %s: setting mode to %s (%d).\n",
387 bond->dev->name, bond_mode_tbl[new_value].modename,
388 new_value);
389 }
390out:
391 return ret;
392}
393static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
394 bonding_show_mode, bonding_store_mode);
395
396
397
398
399
400static ssize_t bonding_show_xmit_hash(struct device *d,
401 struct device_attribute *attr,
402 char *buf)
403{
404 struct bonding *bond = to_bond(d);
405
406 return sprintf(buf, "%s %d\n",
407 xmit_hashtype_tbl[bond->params.xmit_policy].modename,
408 bond->params.xmit_policy);
409}
410
411static ssize_t bonding_store_xmit_hash(struct device *d,
412 struct device_attribute *attr,
413 const char *buf, size_t count)
414{
415 int new_value, ret = count;
416 struct bonding *bond = to_bond(d);
417
418 if (bond->dev->flags & IFF_UP) {
419 pr_err(DRV_NAME
420 "%s: Interface is up. Unable to update xmit policy.\n",
421 bond->dev->name);
422 ret = -EPERM;
423 goto out;
424 }
425
426 new_value = bond_parse_parm(buf, xmit_hashtype_tbl);
427 if (new_value < 0) {
428 pr_err(DRV_NAME
429 ": %s: Ignoring invalid xmit hash policy value %.*s.\n",
430 bond->dev->name,
431 (int)strlen(buf) - 1, buf);
432 ret = -EINVAL;
433 goto out;
434 } else {
435 bond->params.xmit_policy = new_value;
436 bond_set_mode_ops(bond, bond->params.mode);
437 pr_info(DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n",
438 bond->dev->name,
439 xmit_hashtype_tbl[new_value].modename, new_value);
440 }
441out:
442 return ret;
443}
444static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR,
445 bonding_show_xmit_hash, bonding_store_xmit_hash);
446
447
448
449
450static ssize_t bonding_show_arp_validate(struct device *d,
451 struct device_attribute *attr,
452 char *buf)
453{
454 struct bonding *bond = to_bond(d);
455
456 return sprintf(buf, "%s %d\n",
457 arp_validate_tbl[bond->params.arp_validate].modename,
458 bond->params.arp_validate);
459}
460
461static ssize_t bonding_store_arp_validate(struct device *d,
462 struct device_attribute *attr,
463 const char *buf, size_t count)
464{
465 int new_value;
466 struct bonding *bond = to_bond(d);
467
468 new_value = bond_parse_parm(buf, arp_validate_tbl);
469 if (new_value < 0) {
470 pr_err(DRV_NAME
471 ": %s: Ignoring invalid arp_validate value %s\n",
472 bond->dev->name, buf);
473 return -EINVAL;
474 }
475 if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) {
476 pr_err(DRV_NAME
477 ": %s: arp_validate only supported in active-backup mode.\n",
478 bond->dev->name);
479 return -EINVAL;
480 }
481 pr_info(DRV_NAME ": %s: setting arp_validate to %s (%d).\n",
482 bond->dev->name, arp_validate_tbl[new_value].modename,
483 new_value);
484
485 if (!bond->params.arp_validate && new_value)
486 bond_register_arp(bond);
487 else if (bond->params.arp_validate && !new_value)
488 bond_unregister_arp(bond);
489
490 bond->params.arp_validate = new_value;
491
492 return count;
493}
494
495static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate,
496 bonding_store_arp_validate);
497
498
499
500
501
502static ssize_t bonding_show_fail_over_mac(struct device *d,
503 struct device_attribute *attr,
504 char *buf)
505{
506 struct bonding *bond = to_bond(d);
507
508 return sprintf(buf, "%s %d\n",
509 fail_over_mac_tbl[bond->params.fail_over_mac].modename,
510 bond->params.fail_over_mac);
511}
512
513static ssize_t bonding_store_fail_over_mac(struct device *d,
514 struct device_attribute *attr,
515 const char *buf, size_t count)
516{
517 int new_value;
518 struct bonding *bond = to_bond(d);
519
520 if (bond->slave_cnt != 0) {
521 pr_err(DRV_NAME
522 ": %s: Can't alter fail_over_mac with slaves in bond.\n",
523 bond->dev->name);
524 return -EPERM;
525 }
526
527 new_value = bond_parse_parm(buf, fail_over_mac_tbl);
528 if (new_value < 0) {
529 pr_err(DRV_NAME
530 ": %s: Ignoring invalid fail_over_mac value %s.\n",
531 bond->dev->name, buf);
532 return -EINVAL;
533 }
534
535 bond->params.fail_over_mac = new_value;
536 pr_info(DRV_NAME ": %s: Setting fail_over_mac to %s (%d).\n",
537 bond->dev->name, fail_over_mac_tbl[new_value].modename,
538 new_value);
539
540 return count;
541}
542
543static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR,
544 bonding_show_fail_over_mac, bonding_store_fail_over_mac);
545
546
547
548
549
550
551
552static ssize_t bonding_show_arp_interval(struct device *d,
553 struct device_attribute *attr,
554 char *buf)
555{
556 struct bonding *bond = to_bond(d);
557
558 return sprintf(buf, "%d\n", bond->params.arp_interval);
559}
560
561static ssize_t bonding_store_arp_interval(struct device *d,
562 struct device_attribute *attr,
563 const char *buf, size_t count)
564{
565 int new_value, ret = count;
566 struct bonding *bond = to_bond(d);
567
568 if (sscanf(buf, "%d", &new_value) != 1) {
569 pr_err(DRV_NAME
570 ": %s: no arp_interval value specified.\n",
571 bond->dev->name);
572 ret = -EINVAL;
573 goto out;
574 }
575 if (new_value < 0) {
576 pr_err(DRV_NAME
577 ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n",
578 bond->dev->name, new_value, INT_MAX);
579 ret = -EINVAL;
580 goto out;
581 }
582
583 pr_info(DRV_NAME
584 ": %s: Setting ARP monitoring interval to %d.\n",
585 bond->dev->name, new_value);
586 bond->params.arp_interval = new_value;
587 if (bond->params.arp_interval)
588 bond->dev->priv_flags |= IFF_MASTER_ARPMON;
589 if (bond->params.miimon) {
590 pr_info(DRV_NAME
591 ": %s: ARP monitoring cannot be used with MII monitoring. "
592 "%s Disabling MII monitoring.\n",
593 bond->dev->name, bond->dev->name);
594 bond->params.miimon = 0;
595 if (delayed_work_pending(&bond->mii_work)) {
596 cancel_delayed_work(&bond->mii_work);
597 flush_workqueue(bond->wq);
598 }
599 }
600 if (!bond->params.arp_targets[0]) {
601 pr_info(DRV_NAME
602 ": %s: ARP monitoring has been set up, "
603 "but no ARP targets have been specified.\n",
604 bond->dev->name);
605 }
606 if (bond->dev->flags & IFF_UP) {
607
608
609
610
611
612 if (!delayed_work_pending(&bond->arp_work)) {
613 if (bond->params.mode == BOND_MODE_ACTIVEBACKUP)
614 INIT_DELAYED_WORK(&bond->arp_work,
615 bond_activebackup_arp_mon);
616 else
617 INIT_DELAYED_WORK(&bond->arp_work,
618 bond_loadbalance_arp_mon);
619
620 queue_delayed_work(bond->wq, &bond->arp_work, 0);
621 }
622 }
623
624out:
625 return ret;
626}
627static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR,
628 bonding_show_arp_interval, bonding_store_arp_interval);
629
630
631
632
633static ssize_t bonding_show_arp_targets(struct device *d,
634 struct device_attribute *attr,
635 char *buf)
636{
637 int i, res = 0;
638 struct bonding *bond = to_bond(d);
639
640 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
641 if (bond->params.arp_targets[i])
642 res += sprintf(buf + res, "%pI4 ",
643 &bond->params.arp_targets[i]);
644 }
645 if (res)
646 buf[res-1] = '\n';
647 return res;
648}
649
650static ssize_t bonding_store_arp_targets(struct device *d,
651 struct device_attribute *attr,
652 const char *buf, size_t count)
653{
654 __be32 newtarget;
655 int i = 0, done = 0, ret = count;
656 struct bonding *bond = to_bond(d);
657 __be32 *targets;
658
659 targets = bond->params.arp_targets;
660 newtarget = in_aton(buf + 1);
661
662 if (buf[0] == '+') {
663 if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) {
664 pr_err(DRV_NAME
665 ": %s: invalid ARP target %pI4 specified for addition\n",
666 bond->dev->name, &newtarget);
667 ret = -EINVAL;
668 goto out;
669 }
670
671 for (i = 0; (i < BOND_MAX_ARP_TARGETS) && !done; i++) {
672 if (targets[i] == newtarget) {
673 pr_err(DRV_NAME
674 ": %s: ARP target %pI4 is already present\n",
675 bond->dev->name, &newtarget);
676 ret = -EINVAL;
677 goto out;
678 }
679 if (targets[i] == 0) {
680 pr_info(DRV_NAME
681 ": %s: adding ARP target %pI4.\n",
682 bond->dev->name, &newtarget);
683 done = 1;
684 targets[i] = newtarget;
685 }
686 }
687 if (!done) {
688 pr_err(DRV_NAME
689 ": %s: ARP target table is full!\n",
690 bond->dev->name);
691 ret = -EINVAL;
692 goto out;
693 }
694
695 } else if (buf[0] == '-') {
696 if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) {
697 pr_err(DRV_NAME
698 ": %s: invalid ARP target %pI4 specified for removal\n",
699 bond->dev->name, &newtarget);
700 ret = -EINVAL;
701 goto out;
702 }
703
704 for (i = 0; (i < BOND_MAX_ARP_TARGETS) && !done; i++) {
705 if (targets[i] == newtarget) {
706 int j;
707 pr_info(DRV_NAME
708 ": %s: removing ARP target %pI4.\n",
709 bond->dev->name, &newtarget);
710 for (j = i; (j < (BOND_MAX_ARP_TARGETS-1)) && targets[j+1]; j++)
711 targets[j] = targets[j+1];
712
713 targets[j] = 0;
714 done = 1;
715 }
716 }
717 if (!done) {
718 pr_info(DRV_NAME
719 ": %s: unable to remove nonexistent ARP target %pI4.\n",
720 bond->dev->name, &newtarget);
721 ret = -EINVAL;
722 goto out;
723 }
724 } else {
725 pr_err(DRV_NAME ": no command found in arp_ip_targets file"
726 " for bond %s. Use +<addr> or -<addr>.\n",
727 bond->dev->name);
728 ret = -EPERM;
729 goto out;
730 }
731
732out:
733 return ret;
734}
735static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets);
736
737
738
739
740
741
742static ssize_t bonding_show_downdelay(struct device *d,
743 struct device_attribute *attr,
744 char *buf)
745{
746 struct bonding *bond = to_bond(d);
747
748 return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon);
749}
750
751static ssize_t bonding_store_downdelay(struct device *d,
752 struct device_attribute *attr,
753 const char *buf, size_t count)
754{
755 int new_value, ret = count;
756 struct bonding *bond = to_bond(d);
757
758 if (!(bond->params.miimon)) {
759 pr_err(DRV_NAME
760 ": %s: Unable to set down delay as MII monitoring is disabled\n",
761 bond->dev->name);
762 ret = -EPERM;
763 goto out;
764 }
765
766 if (sscanf(buf, "%d", &new_value) != 1) {
767 pr_err(DRV_NAME
768 ": %s: no down delay value specified.\n",
769 bond->dev->name);
770 ret = -EINVAL;
771 goto out;
772 }
773 if (new_value < 0) {
774 pr_err(DRV_NAME
775 ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n",
776 bond->dev->name, new_value, 1, INT_MAX);
777 ret = -EINVAL;
778 goto out;
779 } else {
780 if ((new_value % bond->params.miimon) != 0) {
781 pr_warning(DRV_NAME
782 ": %s: Warning: down delay (%d) is not a "
783 "multiple of miimon (%d), delay rounded "
784 "to %d ms\n",
785 bond->dev->name, new_value,
786 bond->params.miimon,
787 (new_value / bond->params.miimon) *
788 bond->params.miimon);
789 }
790 bond->params.downdelay = new_value / bond->params.miimon;
791 pr_info(DRV_NAME ": %s: Setting down delay to %d.\n",
792 bond->dev->name,
793 bond->params.downdelay * bond->params.miimon);
794
795 }
796
797out:
798 return ret;
799}
800static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR,
801 bonding_show_downdelay, bonding_store_downdelay);
802
803static ssize_t bonding_show_updelay(struct device *d,
804 struct device_attribute *attr,
805 char *buf)
806{
807 struct bonding *bond = to_bond(d);
808
809 return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon);
810
811}
812
813static ssize_t bonding_store_updelay(struct device *d,
814 struct device_attribute *attr,
815 const char *buf, size_t count)
816{
817 int new_value, ret = count;
818 struct bonding *bond = to_bond(d);
819
820 if (!(bond->params.miimon)) {
821 pr_err(DRV_NAME
822 ": %s: Unable to set up delay as MII monitoring is disabled\n",
823 bond->dev->name);
824 ret = -EPERM;
825 goto out;
826 }
827
828 if (sscanf(buf, "%d", &new_value) != 1) {
829 pr_err(DRV_NAME
830 ": %s: no up delay value specified.\n",
831 bond->dev->name);
832 ret = -EINVAL;
833 goto out;
834 }
835 if (new_value < 0) {
836 pr_err(DRV_NAME
837 ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n",
838 bond->dev->name, new_value, 1, INT_MAX);
839 ret = -EINVAL;
840 goto out;
841 } else {
842 if ((new_value % bond->params.miimon) != 0) {
843 pr_warning(DRV_NAME
844 ": %s: Warning: up delay (%d) is not a "
845 "multiple of miimon (%d), updelay rounded "
846 "to %d ms\n",
847 bond->dev->name, new_value,
848 bond->params.miimon,
849 (new_value / bond->params.miimon) *
850 bond->params.miimon);
851 }
852 bond->params.updelay = new_value / bond->params.miimon;
853 pr_info(DRV_NAME ": %s: Setting up delay to %d.\n",
854 bond->dev->name, bond->params.updelay * bond->params.miimon);
855
856 }
857
858out:
859 return ret;
860}
861static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR,
862 bonding_show_updelay, bonding_store_updelay);
863
864
865
866
867
868static ssize_t bonding_show_lacp(struct device *d,
869 struct device_attribute *attr,
870 char *buf)
871{
872 struct bonding *bond = to_bond(d);
873
874 return sprintf(buf, "%s %d\n",
875 bond_lacp_tbl[bond->params.lacp_fast].modename,
876 bond->params.lacp_fast);
877}
878
879static ssize_t bonding_store_lacp(struct device *d,
880 struct device_attribute *attr,
881 const char *buf, size_t count)
882{
883 int new_value, ret = count;
884 struct bonding *bond = to_bond(d);
885
886 if (bond->dev->flags & IFF_UP) {
887 pr_err(DRV_NAME
888 ": %s: Unable to update LACP rate because interface is up.\n",
889 bond->dev->name);
890 ret = -EPERM;
891 goto out;
892 }
893
894 if (bond->params.mode != BOND_MODE_8023AD) {
895 pr_err(DRV_NAME
896 ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n",
897 bond->dev->name);
898 ret = -EPERM;
899 goto out;
900 }
901
902 new_value = bond_parse_parm(buf, bond_lacp_tbl);
903
904 if ((new_value == 1) || (new_value == 0)) {
905 bond->params.lacp_fast = new_value;
906 pr_info(DRV_NAME ": %s: Setting LACP rate to %s (%d).\n",
907 bond->dev->name, bond_lacp_tbl[new_value].modename,
908 new_value);
909 } else {
910 pr_err(DRV_NAME
911 ": %s: Ignoring invalid LACP rate value %.*s.\n",
912 bond->dev->name, (int)strlen(buf) - 1, buf);
913 ret = -EINVAL;
914 }
915out:
916 return ret;
917}
918static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR,
919 bonding_show_lacp, bonding_store_lacp);
920
921static ssize_t bonding_show_ad_select(struct device *d,
922 struct device_attribute *attr,
923 char *buf)
924{
925 struct bonding *bond = to_bond(d);
926
927 return sprintf(buf, "%s %d\n",
928 ad_select_tbl[bond->params.ad_select].modename,
929 bond->params.ad_select);
930}
931
932
933static ssize_t bonding_store_ad_select(struct device *d,
934 struct device_attribute *attr,
935 const char *buf, size_t count)
936{
937 int new_value, ret = count;
938 struct bonding *bond = to_bond(d);
939
940 if (bond->dev->flags & IFF_UP) {
941 pr_err(DRV_NAME
942 ": %s: Unable to update ad_select because interface "
943 "is up.\n", bond->dev->name);
944 ret = -EPERM;
945 goto out;
946 }
947
948 new_value = bond_parse_parm(buf, ad_select_tbl);
949
950 if (new_value != -1) {
951 bond->params.ad_select = new_value;
952 pr_info(DRV_NAME
953 ": %s: Setting ad_select to %s (%d).\n",
954 bond->dev->name, ad_select_tbl[new_value].modename,
955 new_value);
956 } else {
957 pr_err(DRV_NAME
958 ": %s: Ignoring invalid ad_select value %.*s.\n",
959 bond->dev->name, (int)strlen(buf) - 1, buf);
960 ret = -EINVAL;
961 }
962out:
963 return ret;
964}
965static DEVICE_ATTR(ad_select, S_IRUGO | S_IWUSR,
966 bonding_show_ad_select, bonding_store_ad_select);
967
968
969
970
971static ssize_t bonding_show_n_grat_arp(struct device *d,
972 struct device_attribute *attr,
973 char *buf)
974{
975 struct bonding *bond = to_bond(d);
976
977 return sprintf(buf, "%d\n", bond->params.num_grat_arp);
978}
979
980static ssize_t bonding_store_n_grat_arp(struct device *d,
981 struct device_attribute *attr,
982 const char *buf, size_t count)
983{
984 int new_value, ret = count;
985 struct bonding *bond = to_bond(d);
986
987 if (sscanf(buf, "%d", &new_value) != 1) {
988 pr_err(DRV_NAME
989 ": %s: no num_grat_arp value specified.\n",
990 bond->dev->name);
991 ret = -EINVAL;
992 goto out;
993 }
994 if (new_value < 0 || new_value > 255) {
995 pr_err(DRV_NAME
996 ": %s: Invalid num_grat_arp value %d not in range 0-255; rejected.\n",
997 bond->dev->name, new_value);
998 ret = -EINVAL;
999 goto out;
1000 } else {
1001 bond->params.num_grat_arp = new_value;
1002 }
1003out:
1004 return ret;
1005}
1006static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR,
1007 bonding_show_n_grat_arp, bonding_store_n_grat_arp);
1008
1009
1010
1011
1012static ssize_t bonding_show_n_unsol_na(struct device *d,
1013 struct device_attribute *attr,
1014 char *buf)
1015{
1016 struct bonding *bond = to_bond(d);
1017
1018 return sprintf(buf, "%d\n", bond->params.num_unsol_na);
1019}
1020
1021static ssize_t bonding_store_n_unsol_na(struct device *d,
1022 struct device_attribute *attr,
1023 const char *buf, size_t count)
1024{
1025 int new_value, ret = count;
1026 struct bonding *bond = to_bond(d);
1027
1028 if (sscanf(buf, "%d", &new_value) != 1) {
1029 pr_err(DRV_NAME
1030 ": %s: no num_unsol_na value specified.\n",
1031 bond->dev->name);
1032 ret = -EINVAL;
1033 goto out;
1034 }
1035
1036 if (new_value < 0 || new_value > 255) {
1037 pr_err(DRV_NAME
1038 ": %s: Invalid num_unsol_na value %d not in range 0-255; rejected.\n",
1039 bond->dev->name, new_value);
1040 ret = -EINVAL;
1041 goto out;
1042 } else
1043 bond->params.num_unsol_na = new_value;
1044out:
1045 return ret;
1046}
1047static DEVICE_ATTR(num_unsol_na, S_IRUGO | S_IWUSR,
1048 bonding_show_n_unsol_na, bonding_store_n_unsol_na);
1049
1050
1051
1052
1053
1054
1055
1056static ssize_t bonding_show_miimon(struct device *d,
1057 struct device_attribute *attr,
1058 char *buf)
1059{
1060 struct bonding *bond = to_bond(d);
1061
1062 return sprintf(buf, "%d\n", bond->params.miimon);
1063}
1064
1065static ssize_t bonding_store_miimon(struct device *d,
1066 struct device_attribute *attr,
1067 const char *buf, size_t count)
1068{
1069 int new_value, ret = count;
1070 struct bonding *bond = to_bond(d);
1071
1072 if (sscanf(buf, "%d", &new_value) != 1) {
1073 pr_err(DRV_NAME
1074 ": %s: no miimon value specified.\n",
1075 bond->dev->name);
1076 ret = -EINVAL;
1077 goto out;
1078 }
1079 if (new_value < 0) {
1080 pr_err(DRV_NAME
1081 ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n",
1082 bond->dev->name, new_value, 1, INT_MAX);
1083 ret = -EINVAL;
1084 goto out;
1085 } else {
1086 pr_info(DRV_NAME
1087 ": %s: Setting MII monitoring interval to %d.\n",
1088 bond->dev->name, new_value);
1089 bond->params.miimon = new_value;
1090 if (bond->params.updelay)
1091 pr_info(DRV_NAME
1092 ": %s: Note: Updating updelay (to %d) "
1093 "since it is a multiple of the miimon value.\n",
1094 bond->dev->name,
1095 bond->params.updelay * bond->params.miimon);
1096 if (bond->params.downdelay)
1097 pr_info(DRV_NAME
1098 ": %s: Note: Updating downdelay (to %d) "
1099 "since it is a multiple of the miimon value.\n",
1100 bond->dev->name,
1101 bond->params.downdelay * bond->params.miimon);
1102 if (bond->params.arp_interval) {
1103 pr_info(DRV_NAME
1104 ": %s: MII monitoring cannot be used with "
1105 "ARP monitoring. Disabling ARP monitoring...\n",
1106 bond->dev->name);
1107 bond->params.arp_interval = 0;
1108 bond->dev->priv_flags &= ~IFF_MASTER_ARPMON;
1109 if (bond->params.arp_validate) {
1110 bond_unregister_arp(bond);
1111 bond->params.arp_validate =
1112 BOND_ARP_VALIDATE_NONE;
1113 }
1114 if (delayed_work_pending(&bond->arp_work)) {
1115 cancel_delayed_work(&bond->arp_work);
1116 flush_workqueue(bond->wq);
1117 }
1118 }
1119
1120 if (bond->dev->flags & IFF_UP) {
1121
1122
1123
1124
1125
1126 if (!delayed_work_pending(&bond->mii_work)) {
1127 INIT_DELAYED_WORK(&bond->mii_work,
1128 bond_mii_monitor);
1129 queue_delayed_work(bond->wq,
1130 &bond->mii_work, 0);
1131 }
1132 }
1133 }
1134out:
1135 return ret;
1136}
1137static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR,
1138 bonding_show_miimon, bonding_store_miimon);
1139
1140
1141
1142
1143
1144
1145
1146
1147static ssize_t bonding_show_primary(struct device *d,
1148 struct device_attribute *attr,
1149 char *buf)
1150{
1151 int count = 0;
1152 struct bonding *bond = to_bond(d);
1153
1154 if (bond->primary_slave)
1155 count = sprintf(buf, "%s\n", bond->primary_slave->dev->name);
1156
1157 return count;
1158}
1159
1160static ssize_t bonding_store_primary(struct device *d,
1161 struct device_attribute *attr,
1162 const char *buf, size_t count)
1163{
1164 int i;
1165 struct slave *slave;
1166 struct bonding *bond = to_bond(d);
1167
1168 if (!rtnl_trylock())
1169 return restart_syscall();
1170 read_lock(&bond->lock);
1171 write_lock_bh(&bond->curr_slave_lock);
1172
1173 if (!USES_PRIMARY(bond->params.mode)) {
1174 pr_info(DRV_NAME
1175 ": %s: Unable to set primary slave; %s is in mode %d\n",
1176 bond->dev->name, bond->dev->name, bond->params.mode);
1177 } else {
1178 bond_for_each_slave(bond, slave, i) {
1179 if (strnicmp
1180 (slave->dev->name, buf,
1181 strlen(slave->dev->name)) == 0) {
1182 pr_info(DRV_NAME
1183 ": %s: Setting %s as primary slave.\n",
1184 bond->dev->name, slave->dev->name);
1185 bond->primary_slave = slave;
1186 strcpy(bond->params.primary, slave->dev->name);
1187 bond_select_active_slave(bond);
1188 goto out;
1189 }
1190 }
1191
1192
1193
1194 if (strlen(buf) == 0 || buf[0] == '\n') {
1195 pr_info(DRV_NAME
1196 ": %s: Setting primary slave to None.\n",
1197 bond->dev->name);
1198 bond->primary_slave = NULL;
1199 bond_select_active_slave(bond);
1200 } else {
1201 pr_info(DRV_NAME
1202 ": %s: Unable to set %.*s as primary slave as it is not a slave.\n",
1203 bond->dev->name, (int)strlen(buf) - 1, buf);
1204 }
1205 }
1206out:
1207 write_unlock_bh(&bond->curr_slave_lock);
1208 read_unlock(&bond->lock);
1209 rtnl_unlock();
1210
1211 return count;
1212}
1213static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR,
1214 bonding_show_primary, bonding_store_primary);
1215
1216
1217
1218
1219static ssize_t bonding_show_carrier(struct device *d,
1220 struct device_attribute *attr,
1221 char *buf)
1222{
1223 struct bonding *bond = to_bond(d);
1224
1225 return sprintf(buf, "%d\n", bond->params.use_carrier);
1226}
1227
1228static ssize_t bonding_store_carrier(struct device *d,
1229 struct device_attribute *attr,
1230 const char *buf, size_t count)
1231{
1232 int new_value, ret = count;
1233 struct bonding *bond = to_bond(d);
1234
1235
1236 if (sscanf(buf, "%d", &new_value) != 1) {
1237 pr_err(DRV_NAME
1238 ": %s: no use_carrier value specified.\n",
1239 bond->dev->name);
1240 ret = -EINVAL;
1241 goto out;
1242 }
1243 if ((new_value == 0) || (new_value == 1)) {
1244 bond->params.use_carrier = new_value;
1245 pr_info(DRV_NAME ": %s: Setting use_carrier to %d.\n",
1246 bond->dev->name, new_value);
1247 } else {
1248 pr_info(DRV_NAME
1249 ": %s: Ignoring invalid use_carrier value %d.\n",
1250 bond->dev->name, new_value);
1251 }
1252out:
1253 return count;
1254}
1255static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR,
1256 bonding_show_carrier, bonding_store_carrier);
1257
1258
1259
1260
1261
1262static ssize_t bonding_show_active_slave(struct device *d,
1263 struct device_attribute *attr,
1264 char *buf)
1265{
1266 struct slave *curr;
1267 struct bonding *bond = to_bond(d);
1268 int count = 0;
1269
1270 read_lock(&bond->curr_slave_lock);
1271 curr = bond->curr_active_slave;
1272 read_unlock(&bond->curr_slave_lock);
1273
1274 if (USES_PRIMARY(bond->params.mode) && curr)
1275 count = sprintf(buf, "%s\n", curr->dev->name);
1276 return count;
1277}
1278
1279static ssize_t bonding_store_active_slave(struct device *d,
1280 struct device_attribute *attr,
1281 const char *buf, size_t count)
1282{
1283 int i;
1284 struct slave *slave;
1285 struct slave *old_active = NULL;
1286 struct slave *new_active = NULL;
1287 struct bonding *bond = to_bond(d);
1288
1289 if (!rtnl_trylock())
1290 return restart_syscall();
1291 read_lock(&bond->lock);
1292 write_lock_bh(&bond->curr_slave_lock);
1293
1294 if (!USES_PRIMARY(bond->params.mode))
1295 pr_info(DRV_NAME ": %s: Unable to change active slave;"
1296 " %s is in mode %d\n",
1297 bond->dev->name, bond->dev->name, bond->params.mode);
1298 else {
1299 bond_for_each_slave(bond, slave, i) {
1300 if (strnicmp
1301 (slave->dev->name, buf,
1302 strlen(slave->dev->name)) == 0) {
1303 old_active = bond->curr_active_slave;
1304 new_active = slave;
1305 if (new_active == old_active) {
1306
1307 pr_info(DRV_NAME
1308 ": %s: %s is already the current active slave.\n",
1309 bond->dev->name, slave->dev->name);
1310 goto out;
1311 }
1312 else {
1313 if ((new_active) &&
1314 (old_active) &&
1315 (new_active->link == BOND_LINK_UP) &&
1316 IS_UP(new_active->dev)) {
1317 pr_info(DRV_NAME
1318 ": %s: Setting %s as active slave.\n",
1319 bond->dev->name, slave->dev->name);
1320 bond_change_active_slave(bond, new_active);
1321 }
1322 else {
1323 pr_info(DRV_NAME
1324 ": %s: Could not set %s as active slave; "
1325 "either %s is down or the link is down.\n",
1326 bond->dev->name, slave->dev->name,
1327 slave->dev->name);
1328 }
1329 goto out;
1330 }
1331 }
1332 }
1333
1334
1335
1336 if (strlen(buf) == 0 || buf[0] == '\n') {
1337 pr_info(DRV_NAME
1338 ": %s: Setting active slave to None.\n",
1339 bond->dev->name);
1340 bond->primary_slave = NULL;
1341 bond_select_active_slave(bond);
1342 } else {
1343 pr_info(DRV_NAME ": %s: Unable to set %.*s"
1344 " as active slave as it is not a slave.\n",
1345 bond->dev->name, (int)strlen(buf) - 1, buf);
1346 }
1347 }
1348 out:
1349 write_unlock_bh(&bond->curr_slave_lock);
1350 read_unlock(&bond->lock);
1351 rtnl_unlock();
1352
1353 return count;
1354
1355}
1356static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR,
1357 bonding_show_active_slave, bonding_store_active_slave);
1358
1359
1360
1361
1362
1363static ssize_t bonding_show_mii_status(struct device *d,
1364 struct device_attribute *attr,
1365 char *buf)
1366{
1367 struct slave *curr;
1368 struct bonding *bond = to_bond(d);
1369
1370 read_lock(&bond->curr_slave_lock);
1371 curr = bond->curr_active_slave;
1372 read_unlock(&bond->curr_slave_lock);
1373
1374 return sprintf(buf, "%s\n", curr ? "up" : "down");
1375}
1376static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL);
1377
1378
1379
1380
1381
1382static ssize_t bonding_show_ad_aggregator(struct device *d,
1383 struct device_attribute *attr,
1384 char *buf)
1385{
1386 int count = 0;
1387 struct bonding *bond = to_bond(d);
1388
1389 if (bond->params.mode == BOND_MODE_8023AD) {
1390 struct ad_info ad_info;
1391 count = sprintf(buf, "%d\n",
1392 (bond_3ad_get_active_agg_info(bond, &ad_info))
1393 ? 0 : ad_info.aggregator_id);
1394 }
1395
1396 return count;
1397}
1398static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL);
1399
1400
1401
1402
1403
1404static ssize_t bonding_show_ad_num_ports(struct device *d,
1405 struct device_attribute *attr,
1406 char *buf)
1407{
1408 int count = 0;
1409 struct bonding *bond = to_bond(d);
1410
1411 if (bond->params.mode == BOND_MODE_8023AD) {
1412 struct ad_info ad_info;
1413 count = sprintf(buf, "%d\n",
1414 (bond_3ad_get_active_agg_info(bond, &ad_info))
1415 ? 0 : ad_info.ports);
1416 }
1417
1418 return count;
1419}
1420static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL);
1421
1422
1423
1424
1425
1426static ssize_t bonding_show_ad_actor_key(struct device *d,
1427 struct device_attribute *attr,
1428 char *buf)
1429{
1430 int count = 0;
1431 struct bonding *bond = to_bond(d);
1432
1433 if (bond->params.mode == BOND_MODE_8023AD) {
1434 struct ad_info ad_info;
1435 count = sprintf(buf, "%d\n",
1436 (bond_3ad_get_active_agg_info(bond, &ad_info))
1437 ? 0 : ad_info.actor_key);
1438 }
1439
1440 return count;
1441}
1442static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL);
1443
1444
1445
1446
1447
1448static ssize_t bonding_show_ad_partner_key(struct device *d,
1449 struct device_attribute *attr,
1450 char *buf)
1451{
1452 int count = 0;
1453 struct bonding *bond = to_bond(d);
1454
1455 if (bond->params.mode == BOND_MODE_8023AD) {
1456 struct ad_info ad_info;
1457 count = sprintf(buf, "%d\n",
1458 (bond_3ad_get_active_agg_info(bond, &ad_info))
1459 ? 0 : ad_info.partner_key);
1460 }
1461
1462 return count;
1463}
1464static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL);
1465
1466
1467
1468
1469
1470static ssize_t bonding_show_ad_partner_mac(struct device *d,
1471 struct device_attribute *attr,
1472 char *buf)
1473{
1474 int count = 0;
1475 struct bonding *bond = to_bond(d);
1476
1477 if (bond->params.mode == BOND_MODE_8023AD) {
1478 struct ad_info ad_info;
1479 if (!bond_3ad_get_active_agg_info(bond, &ad_info))
1480 count = sprintf(buf, "%pM\n", ad_info.partner_system);
1481 }
1482
1483 return count;
1484}
1485static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL);
1486
1487
1488
1489static struct attribute *per_bond_attrs[] = {
1490 &dev_attr_slaves.attr,
1491 &dev_attr_mode.attr,
1492 &dev_attr_fail_over_mac.attr,
1493 &dev_attr_arp_validate.attr,
1494 &dev_attr_arp_interval.attr,
1495 &dev_attr_arp_ip_target.attr,
1496 &dev_attr_downdelay.attr,
1497 &dev_attr_updelay.attr,
1498 &dev_attr_lacp_rate.attr,
1499 &dev_attr_ad_select.attr,
1500 &dev_attr_xmit_hash_policy.attr,
1501 &dev_attr_num_grat_arp.attr,
1502 &dev_attr_num_unsol_na.attr,
1503 &dev_attr_miimon.attr,
1504 &dev_attr_primary.attr,
1505 &dev_attr_use_carrier.attr,
1506 &dev_attr_active_slave.attr,
1507 &dev_attr_mii_status.attr,
1508 &dev_attr_ad_aggregator.attr,
1509 &dev_attr_ad_num_ports.attr,
1510 &dev_attr_ad_actor_key.attr,
1511 &dev_attr_ad_partner_key.attr,
1512 &dev_attr_ad_partner_mac.attr,
1513 NULL,
1514};
1515
1516static struct attribute_group bonding_group = {
1517 .name = "bonding",
1518 .attrs = per_bond_attrs,
1519};
1520
1521
1522
1523
1524
1525int bond_create_sysfs(void)
1526{
1527 int ret;
1528
1529 ret = netdev_class_create_file(&class_attr_bonding_masters);
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541 if (ret == -EEXIST) {
1542
1543 if (__dev_get_by_name(&init_net,
1544 class_attr_bonding_masters.attr.name))
1545 pr_err("network device named %s already "
1546 "exists in sysfs",
1547 class_attr_bonding_masters.attr.name);
1548 ret = 0;
1549 }
1550
1551 return ret;
1552
1553}
1554
1555
1556
1557
1558void bond_destroy_sysfs(void)
1559{
1560 netdev_class_remove_file(&class_attr_bonding_masters);
1561}
1562
1563
1564
1565
1566
1567int bond_create_sysfs_entry(struct bonding *bond)
1568{
1569 struct net_device *dev = bond->dev;
1570 int err;
1571
1572 err = sysfs_create_group(&(dev->dev.kobj), &bonding_group);
1573 if (err)
1574 pr_emerg("eek! didn't create group!\n");
1575
1576 return err;
1577}
1578
1579
1580
1581void bond_destroy_sysfs_entry(struct bonding *bond)
1582{
1583 struct net_device *dev = bond->dev;
1584
1585 sysfs_remove_group(&(dev->dev.kobj), &bonding_group);
1586}
1587
1588