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-rw-r--r--drivers/net/bonding/bond_sysfs.c1358
1 files changed, 1358 insertions, 0 deletions
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
new file mode 100644
index 000000000000..32d13da43a0b
--- /dev/null
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -0,0 +1,1358 @@
1
2/*
3 * Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 *
19 * The full GNU General Public License is included in this distribution in the
20 * file called LICENSE.
21 *
22 */
23#include <linux/config.h>
24#include <linux/kernel.h>
25#include <linux/module.h>
26#include <linux/sched.h>
27#include <linux/device.h>
28#include <linux/sysdev.h>
29#include <linux/fs.h>
30#include <linux/types.h>
31#include <linux/string.h>
32#include <linux/netdevice.h>
33#include <linux/inetdevice.h>
34#include <linux/in.h>
35#include <linux/sysfs.h>
36#include <linux/string.h>
37#include <linux/ctype.h>
38#include <linux/inet.h>
39#include <linux/rtnetlink.h>
40
41/* #define BONDING_DEBUG 1 */
42#include "bonding.h"
43#define to_class_dev(obj) container_of(obj,struct class_device,kobj)
44#define to_net_dev(class) container_of(class, struct net_device, class_dev)
45#define to_bond(cd) ((struct bonding *)(to_net_dev(cd)->priv))
46
47/*---------------------------- Declarations -------------------------------*/
48
49
50extern struct list_head bond_dev_list;
51extern struct bond_params bonding_defaults;
52extern struct bond_parm_tbl bond_mode_tbl[];
53extern struct bond_parm_tbl bond_lacp_tbl[];
54extern struct bond_parm_tbl xmit_hashtype_tbl[];
55
56static int expected_refcount = -1;
57static struct class *netdev_class;
58/*--------------------------- Data Structures -----------------------------*/
59
60/* Bonding sysfs lock. Why can't we just use the subsytem lock?
61 * Because kobject_register tries to acquire the subsystem lock. If
62 * we already hold the lock (which we would if the user was creating
63 * a new bond through the sysfs interface), we deadlock.
64 * This lock is only needed when deleting a bond - we need to make sure
65 * that we don't collide with an ongoing ioctl.
66 */
67
68struct rw_semaphore bonding_rwsem;
69
70
71
72
73/*------------------------------ Functions --------------------------------*/
74
75/*
76 * "show" function for the bond_masters attribute.
77 * The class parameter is ignored.
78 */
79static ssize_t bonding_show_bonds(struct class *cls, char *buffer)
80{
81 int res = 0;
82 struct bonding *bond;
83
84 down_read(&(bonding_rwsem));
85
86 list_for_each_entry(bond, &bond_dev_list, bond_list) {
87 if (res > (PAGE_SIZE - IFNAMSIZ)) {
88 /* not enough space for another interface name */
89 if ((PAGE_SIZE - res) > 10)
90 res = PAGE_SIZE - 10;
91 res += sprintf(buffer + res, "++more++");
92 break;
93 }
94 res += sprintf(buffer + res, "%s ",
95 bond->dev->name);
96 }
97 res += sprintf(buffer + res, "\n");
98 res++;
99 up_read(&(bonding_rwsem));
100 return res;
101}
102
103/*
104 * "store" function for the bond_masters attribute. This is what
105 * creates and deletes entire bonds.
106 *
107 * The class parameter is ignored.
108 *
109 */
110
111static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t count)
112{
113 char command[IFNAMSIZ + 1] = {0, };
114 char *ifname;
115 int res = count;
116 struct bonding *bond;
117 struct bonding *nxt;
118
119 down_write(&(bonding_rwsem));
120 sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
121 ifname = command + 1;
122 if ((strlen(command) <= 1) ||
123 !dev_valid_name(ifname))
124 goto err_no_cmd;
125
126 if (command[0] == '+') {
127
128 /* Check to see if the bond already exists. */
129 list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list)
130 if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) {
131 printk(KERN_ERR DRV_NAME
132 ": cannot add bond %s; it already exists\n",
133 ifname);
134 res = -EPERM;
135 goto out;
136 }
137
138 printk(KERN_INFO DRV_NAME
139 ": %s is being created...\n", ifname);
140 if (bond_create(ifname, &bonding_defaults, &bond)) {
141 printk(KERN_INFO DRV_NAME
142 ": %s interface already exists. Bond creation failed.\n",
143 ifname);
144 res = -EPERM;
145 }
146 goto out;
147 }
148
149 if (command[0] == '-') {
150 list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list)
151 if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) {
152 rtnl_lock();
153 /* check the ref count on the bond's kobject.
154 * If it's > expected, then there's a file open,
155 * and we have to fail.
156 */
157 if (atomic_read(&bond->dev->class_dev.kobj.kref.refcount)
158 > expected_refcount){
159 rtnl_unlock();
160 printk(KERN_INFO DRV_NAME
161 ": Unable remove bond %s due to open references.\n",
162 ifname);
163 res = -EPERM;
164 goto out;
165 }
166 printk(KERN_INFO DRV_NAME
167 ": %s is being deleted...\n",
168 bond->dev->name);
169 unregister_netdevice(bond->dev);
170 bond_deinit(bond->dev);
171 bond_destroy_sysfs_entry(bond);
172 rtnl_unlock();
173 goto out;
174 }
175
176 printk(KERN_ERR DRV_NAME
177 ": unable to delete non-existent bond %s\n", ifname);
178 res = -ENODEV;
179 goto out;
180 }
181
182err_no_cmd:
183 printk(KERN_ERR DRV_NAME
184 ": no command found in bonding_masters. Use +ifname or -ifname.\n");
185 res = -EPERM;
186
187 /* Always return either count or an error. If you return 0, you'll
188 * get called forever, which is bad.
189 */
190out:
191 up_write(&(bonding_rwsem));
192 return res;
193}
194/* class attribute for bond_masters file. This ends up in /sys/class/net */
195static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO,
196 bonding_show_bonds, bonding_store_bonds);
197
198int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave)
199{
200 char linkname[IFNAMSIZ+7];
201 int ret = 0;
202
203 /* first, create a link from the slave back to the master */
204 ret = sysfs_create_link(&(slave->class_dev.kobj), &(master->class_dev.kobj),
205 "master");
206 if (ret)
207 return ret;
208 /* next, create a link from the master to the slave */
209 sprintf(linkname,"slave_%s",slave->name);
210 ret = sysfs_create_link(&(master->class_dev.kobj), &(slave->class_dev.kobj),
211 linkname);
212 return ret;
213
214}
215
216void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave)
217{
218 char linkname[IFNAMSIZ+7];
219
220 sysfs_remove_link(&(slave->class_dev.kobj), "master");
221 sprintf(linkname,"slave_%s",slave->name);
222 sysfs_remove_link(&(master->class_dev.kobj), linkname);
223}
224
225
226/*
227 * Show the slaves in the current bond.
228 */
229static ssize_t bonding_show_slaves(struct class_device *cd, char *buf)
230{
231 struct slave *slave;
232 int i, res = 0;
233 struct bonding *bond = to_bond(cd);
234
235 read_lock_bh(&bond->lock);
236 bond_for_each_slave(bond, slave, i) {
237 if (res > (PAGE_SIZE - IFNAMSIZ)) {
238 /* not enough space for another interface name */
239 if ((PAGE_SIZE - res) > 10)
240 res = PAGE_SIZE - 10;
241 res += sprintf(buf + res, "++more++");
242 break;
243 }
244 res += sprintf(buf + res, "%s ", slave->dev->name);
245 }
246 read_unlock_bh(&bond->lock);
247 res += sprintf(buf + res, "\n");
248 res++;
249 return res;
250}
251
252/*
253 * Set the slaves in the current bond. The bond interface must be
254 * up for this to succeed.
255 * This function is largely the same flow as bonding_update_bonds().
256 */
257static ssize_t bonding_store_slaves(struct class_device *cd, const char *buffer, size_t count)
258{
259 char command[IFNAMSIZ + 1] = { 0, };
260 char *ifname;
261 int i, res, found, ret = count;
262 struct slave *slave;
263 struct net_device *dev = 0;
264 struct bonding *bond = to_bond(cd);
265
266 /* Quick sanity check -- is the bond interface up? */
267 if (!(bond->dev->flags & IFF_UP)) {
268 printk(KERN_ERR DRV_NAME
269 ": %s: Unable to update slaves because interface is down.\n",
270 bond->dev->name);
271 ret = -EPERM;
272 goto out;
273 }
274
275 /* Note: We can't hold bond->lock here, as bond_create grabs it. */
276
277 sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
278 ifname = command + 1;
279 if ((strlen(command) <= 1) ||
280 !dev_valid_name(ifname))
281 goto err_no_cmd;
282
283 if (command[0] == '+') {
284
285 /* Got a slave name in ifname. Is it already in the list? */
286 found = 0;
287 read_lock_bh(&bond->lock);
288 bond_for_each_slave(bond, slave, i)
289 if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
290 printk(KERN_ERR DRV_NAME
291 ": %s: Interface %s is already enslaved!\n",
292 bond->dev->name, ifname);
293 ret = -EPERM;
294 read_unlock_bh(&bond->lock);
295 goto out;
296 }
297
298 read_unlock_bh(&bond->lock);
299 printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n",
300 bond->dev->name, ifname);
301 dev = dev_get_by_name(ifname);
302 if (!dev) {
303 printk(KERN_INFO DRV_NAME
304 ": %s: Interface %s does not exist!\n",
305 bond->dev->name, ifname);
306 ret = -EPERM;
307 goto out;
308 }
309 else
310 dev_put(dev);
311
312 if (dev->flags & IFF_UP) {
313 printk(KERN_ERR DRV_NAME
314 ": %s: Error: Unable to enslave %s "
315 "because it is already up.\n",
316 bond->dev->name, dev->name);
317 ret = -EPERM;
318 goto out;
319 }
320 /* If this is the first slave, then we need to set
321 the master's hardware address to be the same as the
322 slave's. */
323 if (!(*((u32 *) & (bond->dev->dev_addr[0])))) {
324 memcpy(bond->dev->dev_addr, dev->dev_addr,
325 dev->addr_len);
326 }
327
328 /* Set the slave's MTU to match the bond */
329 if (dev->mtu != bond->dev->mtu) {
330 if (dev->change_mtu) {
331 res = dev->change_mtu(dev,
332 bond->dev->mtu);
333 if (res) {
334 ret = res;
335 goto out;
336 }
337 } else {
338 dev->mtu = bond->dev->mtu;
339 }
340 }
341 rtnl_lock();
342 res = bond_enslave(bond->dev, dev);
343 rtnl_unlock();
344 if (res) {
345 ret = res;
346 }
347 goto out;
348 }
349
350 if (command[0] == '-') {
351 dev = NULL;
352 bond_for_each_slave(bond, slave, i)
353 if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
354 dev = slave->dev;
355 break;
356 }
357 if (dev) {
358 printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n",
359 bond->dev->name, dev->name);
360 rtnl_lock();
361 res = bond_release(bond->dev, dev);
362 rtnl_unlock();
363 if (res) {
364 ret = res;
365 goto out;
366 }
367 /* set the slave MTU to the default */
368 if (dev->change_mtu) {
369 dev->change_mtu(dev, 1500);
370 } else {
371 dev->mtu = 1500;
372 }
373 }
374 else {
375 printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n",
376 ifname, bond->dev->name);
377 ret = -ENODEV;
378 }
379 goto out;
380 }
381
382err_no_cmd:
383 printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name);
384 ret = -EPERM;
385
386out:
387 return ret;
388}
389
390static CLASS_DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves);
391
392/*
393 * Show and set the bonding mode. The bond interface must be down to
394 * change the mode.
395 */
396static ssize_t bonding_show_mode(struct class_device *cd, char *buf)
397{
398 struct bonding *bond = to_bond(cd);
399
400 return sprintf(buf, "%s %d\n",
401 bond_mode_tbl[bond->params.mode].modename,
402 bond->params.mode) + 1;
403}
404
405static ssize_t bonding_store_mode(struct class_device *cd, const char *buf, size_t count)
406{
407 int new_value, ret = count;
408 struct bonding *bond = to_bond(cd);
409
410 if (bond->dev->flags & IFF_UP) {
411 printk(KERN_ERR DRV_NAME
412 ": unable to update mode of %s because interface is up.\n",
413 bond->dev->name);
414 ret = -EPERM;
415 goto out;
416 }
417
418 new_value = bond_parse_parm((char *)buf, bond_mode_tbl);
419 if (new_value < 0) {
420 printk(KERN_ERR DRV_NAME
421 ": %s: Ignoring invalid mode value %.*s.\n",
422 bond->dev->name,
423 (int)strlen(buf) - 1, buf);
424 ret = -EINVAL;
425 goto out;
426 } else {
427 bond->params.mode = new_value;
428 bond_set_mode_ops(bond, bond->params.mode);
429 printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n",
430 bond->dev->name, bond_mode_tbl[new_value].modename, new_value);
431 }
432out:
433 return ret;
434}
435static CLASS_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode);
436
437/*
438 * Show and set the bonding transmit hash method. The bond interface must be down to
439 * change the xmit hash policy.
440 */
441static ssize_t bonding_show_xmit_hash(struct class_device *cd, char *buf)
442{
443 int count;
444 struct bonding *bond = to_bond(cd);
445
446 if ((bond->params.mode != BOND_MODE_XOR) &&
447 (bond->params.mode != BOND_MODE_8023AD)) {
448 // Not Applicable
449 count = sprintf(buf, "NA\n") + 1;
450 } else {
451 count = sprintf(buf, "%s %d\n",
452 xmit_hashtype_tbl[bond->params.xmit_policy].modename,
453 bond->params.xmit_policy) + 1;
454 }
455
456 return count;
457}
458
459static ssize_t bonding_store_xmit_hash(struct class_device *cd, const char *buf, size_t count)
460{
461 int new_value, ret = count;
462 struct bonding *bond = to_bond(cd);
463
464 if (bond->dev->flags & IFF_UP) {
465 printk(KERN_ERR DRV_NAME
466 "%s: Interface is up. Unable to update xmit policy.\n",
467 bond->dev->name);
468 ret = -EPERM;
469 goto out;
470 }
471
472 if ((bond->params.mode != BOND_MODE_XOR) &&
473 (bond->params.mode != BOND_MODE_8023AD)) {
474 printk(KERN_ERR DRV_NAME
475 "%s: Transmit hash policy is irrelevant in this mode.\n",
476 bond->dev->name);
477 ret = -EPERM;
478 goto out;
479 }
480
481 new_value = bond_parse_parm((char *)buf, xmit_hashtype_tbl);
482 if (new_value < 0) {
483 printk(KERN_ERR DRV_NAME
484 ": %s: Ignoring invalid xmit hash policy value %.*s.\n",
485 bond->dev->name,
486 (int)strlen(buf) - 1, buf);
487 ret = -EINVAL;
488 goto out;
489 } else {
490 bond->params.xmit_policy = new_value;
491 bond_set_mode_ops(bond, bond->params.mode);
492 printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n",
493 bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value);
494 }
495out:
496 return ret;
497}
498static CLASS_DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash);
499
500/*
501 * Show and set the arp timer interval. There are two tricky bits
502 * here. First, if ARP monitoring is activated, then we must disable
503 * MII monitoring. Second, if the ARP timer isn't running, we must
504 * start it.
505 */
506static ssize_t bonding_show_arp_interval(struct class_device *cd, char *buf)
507{
508 struct bonding *bond = to_bond(cd);
509
510 return sprintf(buf, "%d\n", bond->params.arp_interval) + 1;
511}
512
513static ssize_t bonding_store_arp_interval(struct class_device *cd, const char *buf, size_t count)
514{
515 int new_value, ret = count;
516 struct bonding *bond = to_bond(cd);
517
518 if (sscanf(buf, "%d", &new_value) != 1) {
519 printk(KERN_ERR DRV_NAME
520 ": %s: no arp_interval value specified.\n",
521 bond->dev->name);
522 ret = -EINVAL;
523 goto out;
524 }
525 if (new_value < 0) {
526 printk(KERN_ERR DRV_NAME
527 ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n",
528 bond->dev->name, new_value, INT_MAX);
529 ret = -EINVAL;
530 goto out;
531 }
532
533 printk(KERN_INFO DRV_NAME
534 ": %s: Setting ARP monitoring interval to %d.\n",
535 bond->dev->name, new_value);
536 bond->params.arp_interval = new_value;
537 if (bond->params.miimon) {
538 printk(KERN_INFO DRV_NAME
539 ": %s: ARP monitoring cannot be used with MII monitoring. "
540 "%s Disabling MII monitoring.\n",
541 bond->dev->name, bond->dev->name);
542 bond->params.miimon = 0;
543 /* Kill MII timer, else it brings bond's link down */
544 if (bond->arp_timer.function) {
545 printk(KERN_INFO DRV_NAME
546 ": %s: Kill MII timer, else it brings bond's link down...\n",
547 bond->dev->name);
548 del_timer_sync(&bond->mii_timer);
549 }
550 }
551 if (!bond->params.arp_targets[0]) {
552 printk(KERN_INFO DRV_NAME
553 ": %s: ARP monitoring has been set up, "
554 "but no ARP targets have been specified.\n",
555 bond->dev->name);
556 }
557 if (bond->dev->flags & IFF_UP) {
558 /* If the interface is up, we may need to fire off
559 * the ARP timer. If the interface is down, the
560 * timer will get fired off when the open function
561 * is called.
562 */
563 if (bond->arp_timer.function) {
564 /* The timer's already set up, so fire it off */
565 mod_timer(&bond->arp_timer, jiffies + 1);
566 } else {
567 /* Set up the timer. */
568 init_timer(&bond->arp_timer);
569 bond->arp_timer.expires = jiffies + 1;
570 bond->arp_timer.data =
571 (unsigned long) bond->dev;
572 if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) {
573 bond->arp_timer.function =
574 (void *)
575 &bond_activebackup_arp_mon;
576 } else {
577 bond->arp_timer.function =
578 (void *)
579 &bond_loadbalance_arp_mon;
580 }
581 add_timer(&bond->arp_timer);
582 }
583 }
584
585out:
586 return ret;
587}
588static CLASS_DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR , bonding_show_arp_interval, bonding_store_arp_interval);
589
590/*
591 * Show and set the arp targets.
592 */
593static ssize_t bonding_show_arp_targets(struct class_device *cd, char *buf)
594{
595 int i, res = 0;
596 struct bonding *bond = to_bond(cd);
597
598 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
599 if (bond->params.arp_targets[i])
600 res += sprintf(buf + res, "%u.%u.%u.%u ",
601 NIPQUAD(bond->params.arp_targets[i]));
602 }
603 if (res)
604 res--; /* eat the leftover space */
605 res += sprintf(buf + res, "\n");
606 res++;
607 return res;
608}
609
610static ssize_t bonding_store_arp_targets(struct class_device *cd, const char *buf, size_t count)
611{
612 u32 newtarget;
613 int i = 0, done = 0, ret = count;
614 struct bonding *bond = to_bond(cd);
615 u32 *targets;
616
617 targets = bond->params.arp_targets;
618 newtarget = in_aton(buf + 1);
619 /* look for adds */
620 if (buf[0] == '+') {
621 if ((newtarget == 0) || (newtarget == INADDR_BROADCAST)) {
622 printk(KERN_ERR DRV_NAME
623 ": %s: invalid ARP target %u.%u.%u.%u specified for addition\n",
624 bond->dev->name, NIPQUAD(newtarget));
625 ret = -EINVAL;
626 goto out;
627 }
628 /* look for an empty slot to put the target in, and check for dupes */
629 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
630 if (targets[i] == newtarget) { /* duplicate */
631 printk(KERN_ERR DRV_NAME
632 ": %s: ARP target %u.%u.%u.%u is already present\n",
633 bond->dev->name, NIPQUAD(newtarget));
634 if (done)
635 targets[i] = 0;
636 ret = -EINVAL;
637 goto out;
638 }
639 if (targets[i] == 0 && !done) {
640 printk(KERN_INFO DRV_NAME
641 ": %s: adding ARP target %d.%d.%d.%d.\n",
642 bond->dev->name, NIPQUAD(newtarget));
643 done = 1;
644 targets[i] = newtarget;
645 }
646 }
647 if (!done) {
648 printk(KERN_ERR DRV_NAME
649 ": %s: ARP target table is full!\n",
650 bond->dev->name);
651 ret = -EINVAL;
652 goto out;
653 }
654
655 }
656 else if (buf[0] == '-') {
657 if ((newtarget == 0) || (newtarget == INADDR_BROADCAST)) {
658 printk(KERN_ERR DRV_NAME
659 ": %s: invalid ARP target %d.%d.%d.%d specified for removal\n",
660 bond->dev->name, NIPQUAD(newtarget));
661 ret = -EINVAL;
662 goto out;
663 }
664
665 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
666 if (targets[i] == newtarget) {
667 printk(KERN_INFO DRV_NAME
668 ": %s: removing ARP target %d.%d.%d.%d.\n",
669 bond->dev->name, NIPQUAD(newtarget));
670 targets[i] = 0;
671 done = 1;
672 }
673 }
674 if (!done) {
675 printk(KERN_INFO DRV_NAME
676 ": %s: unable to remove nonexistent ARP target %d.%d.%d.%d.\n",
677 bond->dev->name, NIPQUAD(newtarget));
678 ret = -EINVAL;
679 goto out;
680 }
681 }
682 else {
683 printk(KERN_ERR DRV_NAME ": no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n",
684 bond->dev->name);
685 ret = -EPERM;
686 goto out;
687 }
688
689out:
690 return ret;
691}
692static CLASS_DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets);
693
694/*
695 * Show and set the up and down delays. These must be multiples of the
696 * MII monitoring value, and are stored internally as the multiplier.
697 * Thus, we must translate to MS for the real world.
698 */
699static ssize_t bonding_show_downdelay(struct class_device *cd, char *buf)
700{
701 struct bonding *bond = to_bond(cd);
702
703 return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon) + 1;
704}
705
706static ssize_t bonding_store_downdelay(struct class_device *cd, const char *buf, size_t count)
707{
708 int new_value, ret = count;
709 struct bonding *bond = to_bond(cd);
710
711 if (!(bond->params.miimon)) {
712 printk(KERN_ERR DRV_NAME
713 ": %s: Unable to set down delay as MII monitoring is disabled\n",
714 bond->dev->name);
715 ret = -EPERM;
716 goto out;
717 }
718
719 if (sscanf(buf, "%d", &new_value) != 1) {
720 printk(KERN_ERR DRV_NAME
721 ": %s: no down delay value specified.\n",
722 bond->dev->name);
723 ret = -EINVAL;
724 goto out;
725 }
726 if (new_value < 0) {
727 printk(KERN_ERR DRV_NAME
728 ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n",
729 bond->dev->name, new_value, 1, INT_MAX);
730 ret = -EINVAL;
731 goto out;
732 } else {
733 if ((new_value % bond->params.miimon) != 0) {
734 printk(KERN_WARNING DRV_NAME
735 ": %s: Warning: down delay (%d) is not a multiple "
736 "of miimon (%d), delay rounded to %d ms\n",
737 bond->dev->name, new_value, bond->params.miimon,
738 (new_value / bond->params.miimon) *
739 bond->params.miimon);
740 }
741 bond->params.downdelay = new_value / bond->params.miimon;
742 printk(KERN_INFO DRV_NAME ": %s: Setting down delay to %d.\n",
743 bond->dev->name, bond->params.downdelay * bond->params.miimon);
744
745 }
746
747out:
748 return ret;
749}
750static CLASS_DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay);
751
752static ssize_t bonding_show_updelay(struct class_device *cd, char *buf)
753{
754 struct bonding *bond = to_bond(cd);
755
756 return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon) + 1;
757
758}
759
760static ssize_t bonding_store_updelay(struct class_device *cd, const char *buf, size_t count)
761{
762 int new_value, ret = count;
763 struct bonding *bond = to_bond(cd);
764
765 if (!(bond->params.miimon)) {
766 printk(KERN_ERR DRV_NAME
767 ": %s: Unable to set up delay as MII monitoring is disabled\n",
768 bond->dev->name);
769 ret = -EPERM;
770 goto out;
771 }
772
773 if (sscanf(buf, "%d", &new_value) != 1) {
774 printk(KERN_ERR DRV_NAME
775 ": %s: no up delay value specified.\n",
776 bond->dev->name);
777 ret = -EINVAL;
778 goto out;
779 }
780 if (new_value < 0) {
781 printk(KERN_ERR DRV_NAME
782 ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n",
783 bond->dev->name, new_value, 1, INT_MAX);
784 ret = -EINVAL;
785 goto out;
786 } else {
787 if ((new_value % bond->params.miimon) != 0) {
788 printk(KERN_WARNING DRV_NAME
789 ": %s: Warning: up delay (%d) is not a multiple "
790 "of miimon (%d), updelay rounded to %d ms\n",
791 bond->dev->name, new_value, bond->params.miimon,
792 (new_value / bond->params.miimon) *
793 bond->params.miimon);
794 }
795 bond->params.updelay = new_value / bond->params.miimon;
796 printk(KERN_INFO DRV_NAME ": %s: Setting up delay to %d.\n",
797 bond->dev->name, bond->params.updelay * bond->params.miimon);
798
799 }
800
801out:
802 return ret;
803}
804static CLASS_DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR , bonding_show_updelay, bonding_store_updelay);
805
806/*
807 * Show and set the LACP interval. Interface must be down, and the mode
808 * must be set to 802.3ad mode.
809 */
810static ssize_t bonding_show_lacp(struct class_device *cd, char *buf)
811{
812 struct bonding *bond = to_bond(cd);
813
814 return sprintf(buf, "%s %d\n",
815 bond_lacp_tbl[bond->params.lacp_fast].modename,
816 bond->params.lacp_fast) + 1;
817}
818
819static ssize_t bonding_store_lacp(struct class_device *cd, const char *buf, size_t count)
820{
821 int new_value, ret = count;
822 struct bonding *bond = to_bond(cd);
823
824 if (bond->dev->flags & IFF_UP) {
825 printk(KERN_ERR DRV_NAME
826 ": %s: Unable to update LACP rate because interface is up.\n",
827 bond->dev->name);
828 ret = -EPERM;
829 goto out;
830 }
831
832 if (bond->params.mode != BOND_MODE_8023AD) {
833 printk(KERN_ERR DRV_NAME
834 ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n",
835 bond->dev->name);
836 ret = -EPERM;
837 goto out;
838 }
839
840 new_value = bond_parse_parm((char *)buf, bond_lacp_tbl);
841
842 if ((new_value == 1) || (new_value == 0)) {
843 bond->params.lacp_fast = new_value;
844 printk(KERN_INFO DRV_NAME
845 ": %s: Setting LACP rate to %s (%d).\n",
846 bond->dev->name, bond_lacp_tbl[new_value].modename, new_value);
847 } else {
848 printk(KERN_ERR DRV_NAME
849 ": %s: Ignoring invalid LACP rate value %.*s.\n",
850 bond->dev->name, (int)strlen(buf) - 1, buf);
851 ret = -EINVAL;
852 }
853out:
854 return ret;
855}
856static CLASS_DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp);
857
858/*
859 * Show and set the MII monitor interval. There are two tricky bits
860 * here. First, if MII monitoring is activated, then we must disable
861 * ARP monitoring. Second, if the timer isn't running, we must
862 * start it.
863 */
864static ssize_t bonding_show_miimon(struct class_device *cd, char *buf)
865{
866 struct bonding *bond = to_bond(cd);
867
868 return sprintf(buf, "%d\n", bond->params.miimon) + 1;
869}
870
871static ssize_t bonding_store_miimon(struct class_device *cd, const char *buf, size_t count)
872{
873 int new_value, ret = count;
874 struct bonding *bond = to_bond(cd);
875
876 if (sscanf(buf, "%d", &new_value) != 1) {
877 printk(KERN_ERR DRV_NAME
878 ": %s: no miimon value specified.\n",
879 bond->dev->name);
880 ret = -EINVAL;
881 goto out;
882 }
883 if (new_value < 0) {
884 printk(KERN_ERR DRV_NAME
885 ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n",
886 bond->dev->name, new_value, 1, INT_MAX);
887 ret = -EINVAL;
888 goto out;
889 } else {
890 printk(KERN_INFO DRV_NAME
891 ": %s: Setting MII monitoring interval to %d.\n",
892 bond->dev->name, new_value);
893 bond->params.miimon = new_value;
894 if(bond->params.updelay)
895 printk(KERN_INFO DRV_NAME
896 ": %s: Note: Updating updelay (to %d) "
897 "since it is a multiple of the miimon value.\n",
898 bond->dev->name,
899 bond->params.updelay * bond->params.miimon);
900 if(bond->params.downdelay)
901 printk(KERN_INFO DRV_NAME
902 ": %s: Note: Updating downdelay (to %d) "
903 "since it is a multiple of the miimon value.\n",
904 bond->dev->name,
905 bond->params.downdelay * bond->params.miimon);
906 if (bond->params.arp_interval) {
907 printk(KERN_INFO DRV_NAME
908 ": %s: MII monitoring cannot be used with "
909 "ARP monitoring. Disabling ARP monitoring...\n",
910 bond->dev->name);
911 bond->params.arp_interval = 0;
912 /* Kill ARP timer, else it brings bond's link down */
913 if (bond->mii_timer.function) {
914 printk(KERN_INFO DRV_NAME
915 ": %s: Kill ARP timer, else it brings bond's link down...\n",
916 bond->dev->name);
917 del_timer_sync(&bond->arp_timer);
918 }
919 }
920
921 if (bond->dev->flags & IFF_UP) {
922 /* If the interface is up, we may need to fire off
923 * the MII timer. If the interface is down, the
924 * timer will get fired off when the open function
925 * is called.
926 */
927 if (bond->mii_timer.function) {
928 /* The timer's already set up, so fire it off */
929 mod_timer(&bond->mii_timer, jiffies + 1);
930 } else {
931 /* Set up the timer. */
932 init_timer(&bond->mii_timer);
933 bond->mii_timer.expires = jiffies + 1;
934 bond->mii_timer.data =
935 (unsigned long) bond->dev;
936 bond->mii_timer.function =
937 (void *) &bond_mii_monitor;
938 add_timer(&bond->mii_timer);
939 }
940 }
941 }
942out:
943 return ret;
944}
945static CLASS_DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR, bonding_show_miimon, bonding_store_miimon);
946
947/*
948 * Show and set the primary slave. The store function is much
949 * simpler than bonding_store_slaves function because it only needs to
950 * handle one interface name.
951 * The bond must be a mode that supports a primary for this be
952 * set.
953 */
954static ssize_t bonding_show_primary(struct class_device *cd, char *buf)
955{
956 int count = 0;
957 struct bonding *bond = to_bond(cd);
958
959 if (bond->primary_slave)
960 count = sprintf(buf, "%s\n", bond->primary_slave->dev->name) + 1;
961 else
962 count = sprintf(buf, "\n") + 1;
963
964 return count;
965}
966
967static ssize_t bonding_store_primary(struct class_device *cd, const char *buf, size_t count)
968{
969 int i;
970 struct slave *slave;
971 struct bonding *bond = to_bond(cd);
972
973 write_lock_bh(&bond->lock);
974 if (!USES_PRIMARY(bond->params.mode)) {
975 printk(KERN_INFO DRV_NAME
976 ": %s: Unable to set primary slave; %s is in mode %d\n",
977 bond->dev->name, bond->dev->name, bond->params.mode);
978 } else {
979 bond_for_each_slave(bond, slave, i) {
980 if (strnicmp
981 (slave->dev->name, buf,
982 strlen(slave->dev->name)) == 0) {
983 printk(KERN_INFO DRV_NAME
984 ": %s: Setting %s as primary slave.\n",
985 bond->dev->name, slave->dev->name);
986 bond->primary_slave = slave;
987 bond_select_active_slave(bond);
988 goto out;
989 }
990 }
991
992 /* if we got here, then we didn't match the name of any slave */
993
994 if (strlen(buf) == 0 || buf[0] == '\n') {
995 printk(KERN_INFO DRV_NAME
996 ": %s: Setting primary slave to None.\n",
997 bond->dev->name);
998 bond->primary_slave = 0;
999 bond_select_active_slave(bond);
1000 } else {
1001 printk(KERN_INFO DRV_NAME
1002 ": %s: Unable to set %.*s as primary slave as it is not a slave.\n",
1003 bond->dev->name, (int)strlen(buf) - 1, buf);
1004 }
1005 }
1006out:
1007 write_unlock_bh(&bond->lock);
1008 return count;
1009}
1010static CLASS_DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, bonding_show_primary, bonding_store_primary);
1011
1012/*
1013 * Show and set the use_carrier flag.
1014 */
1015static ssize_t bonding_show_carrier(struct class_device *cd, char *buf)
1016{
1017 struct bonding *bond = to_bond(cd);
1018
1019 return sprintf(buf, "%d\n", bond->params.use_carrier) + 1;
1020}
1021
1022static ssize_t bonding_store_carrier(struct class_device *cd, const char *buf, size_t count)
1023{
1024 int new_value, ret = count;
1025 struct bonding *bond = to_bond(cd);
1026
1027
1028 if (sscanf(buf, "%d", &new_value) != 1) {
1029 printk(KERN_ERR DRV_NAME
1030 ": %s: no use_carrier value specified.\n",
1031 bond->dev->name);
1032 ret = -EINVAL;
1033 goto out;
1034 }
1035 if ((new_value == 0) || (new_value == 1)) {
1036 bond->params.use_carrier = new_value;
1037 printk(KERN_INFO DRV_NAME ": %s: Setting use_carrier to %d.\n",
1038 bond->dev->name, new_value);
1039 } else {
1040 printk(KERN_INFO DRV_NAME
1041 ": %s: Ignoring invalid use_carrier value %d.\n",
1042 bond->dev->name, new_value);
1043 }
1044out:
1045 return count;
1046}
1047static CLASS_DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, bonding_show_carrier, bonding_store_carrier);
1048
1049
1050/*
1051 * Show and set currently active_slave.
1052 */
1053static ssize_t bonding_show_active_slave(struct class_device *cd, char *buf)
1054{
1055 struct slave *curr;
1056 struct bonding *bond = to_bond(cd);
1057 int count;
1058
1059
1060 read_lock(&bond->curr_slave_lock);
1061 curr = bond->curr_active_slave;
1062 read_unlock(&bond->curr_slave_lock);
1063
1064 if (USES_PRIMARY(bond->params.mode) && curr)
1065 count = sprintf(buf, "%s\n", curr->dev->name) + 1;
1066 else
1067 count = sprintf(buf, "\n") + 1;
1068 return count;
1069}
1070
1071static ssize_t bonding_store_active_slave(struct class_device *cd, const char *buf, size_t count)
1072{
1073 int i;
1074 struct slave *slave;
1075 struct slave *old_active = NULL;
1076 struct slave *new_active = NULL;
1077 struct bonding *bond = to_bond(cd);
1078
1079 write_lock_bh(&bond->lock);
1080 if (!USES_PRIMARY(bond->params.mode)) {
1081 printk(KERN_INFO DRV_NAME
1082 ": %s: Unable to change active slave; %s is in mode %d\n",
1083 bond->dev->name, bond->dev->name, bond->params.mode);
1084 } else {
1085 bond_for_each_slave(bond, slave, i) {
1086 if (strnicmp
1087 (slave->dev->name, buf,
1088 strlen(slave->dev->name)) == 0) {
1089 old_active = bond->curr_active_slave;
1090 new_active = slave;
1091 if (new_active && (new_active == old_active)) {
1092 /* do nothing */
1093 printk(KERN_INFO DRV_NAME
1094 ": %s: %s is already the current active slave.\n",
1095 bond->dev->name, slave->dev->name);
1096 goto out;
1097 }
1098 else {
1099 if ((new_active) &&
1100 (old_active) &&
1101 (new_active->link == BOND_LINK_UP) &&
1102 IS_UP(new_active->dev)) {
1103 printk(KERN_INFO DRV_NAME
1104 ": %s: Setting %s as active slave.\n",
1105 bond->dev->name, slave->dev->name);
1106 bond_change_active_slave(bond, new_active);
1107 }
1108 else {
1109 printk(KERN_INFO DRV_NAME
1110 ": %s: Could not set %s as active slave; "
1111 "either %s is down or the link is down.\n",
1112 bond->dev->name, slave->dev->name,
1113 slave->dev->name);
1114 }
1115 goto out;
1116 }
1117 }
1118 }
1119
1120 /* if we got here, then we didn't match the name of any slave */
1121
1122 if (strlen(buf) == 0 || buf[0] == '\n') {
1123 printk(KERN_INFO DRV_NAME
1124 ": %s: Setting active slave to None.\n",
1125 bond->dev->name);
1126 bond->primary_slave = 0;
1127 bond_select_active_slave(bond);
1128 } else {
1129 printk(KERN_INFO DRV_NAME
1130 ": %s: Unable to set %.*s as active slave as it is not a slave.\n",
1131 bond->dev->name, (int)strlen(buf) - 1, buf);
1132 }
1133 }
1134out:
1135 write_unlock_bh(&bond->lock);
1136 return count;
1137
1138}
1139static CLASS_DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, bonding_show_active_slave, bonding_store_active_slave);
1140
1141
1142/*
1143 * Show link status of the bond interface.
1144 */
1145static ssize_t bonding_show_mii_status(struct class_device *cd, char *buf)
1146{
1147 struct slave *curr;
1148 struct bonding *bond = to_bond(cd);
1149
1150 read_lock(&bond->curr_slave_lock);
1151 curr = bond->curr_active_slave;
1152 read_unlock(&bond->curr_slave_lock);
1153
1154 return sprintf(buf, "%s\n", (curr) ? "up" : "down") + 1;
1155}
1156static CLASS_DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL);
1157
1158
1159/*
1160 * Show current 802.3ad aggregator ID.
1161 */
1162static ssize_t bonding_show_ad_aggregator(struct class_device *cd, char *buf)
1163{
1164 int count = 0;
1165 struct bonding *bond = to_bond(cd);
1166
1167 if (bond->params.mode == BOND_MODE_8023AD) {
1168 struct ad_info ad_info;
1169 count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id) + 1;
1170 }
1171 else
1172 count = sprintf(buf, "\n") + 1;
1173
1174 return count;
1175}
1176static CLASS_DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL);
1177
1178
1179/*
1180 * Show number of active 802.3ad ports.
1181 */
1182static ssize_t bonding_show_ad_num_ports(struct class_device *cd, char *buf)
1183{
1184 int count = 0;
1185 struct bonding *bond = to_bond(cd);
1186
1187 if (bond->params.mode == BOND_MODE_8023AD) {
1188 struct ad_info ad_info;
1189 count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports) + 1;
1190 }
1191 else
1192 count = sprintf(buf, "\n") + 1;
1193
1194 return count;
1195}
1196static CLASS_DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL);
1197
1198
1199/*
1200 * Show current 802.3ad actor key.
1201 */
1202static ssize_t bonding_show_ad_actor_key(struct class_device *cd, char *buf)
1203{
1204 int count = 0;
1205 struct bonding *bond = to_bond(cd);
1206
1207 if (bond->params.mode == BOND_MODE_8023AD) {
1208 struct ad_info ad_info;
1209 count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key) + 1;
1210 }
1211 else
1212 count = sprintf(buf, "\n") + 1;
1213
1214 return count;
1215}
1216static CLASS_DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL);
1217
1218
1219/*
1220 * Show current 802.3ad partner key.
1221 */
1222static ssize_t bonding_show_ad_partner_key(struct class_device *cd, char *buf)
1223{
1224 int count = 0;
1225 struct bonding *bond = to_bond(cd);
1226
1227 if (bond->params.mode == BOND_MODE_8023AD) {
1228 struct ad_info ad_info;
1229 count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key) + 1;
1230 }
1231 else
1232 count = sprintf(buf, "\n") + 1;
1233
1234 return count;
1235}
1236static CLASS_DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL);
1237
1238
1239/*
1240 * Show current 802.3ad partner mac.
1241 */
1242static ssize_t bonding_show_ad_partner_mac(struct class_device *cd, char *buf)
1243{
1244 int count = 0;
1245 struct bonding *bond = to_bond(cd);
1246
1247 if (bond->params.mode == BOND_MODE_8023AD) {
1248 struct ad_info ad_info;
1249 if (!bond_3ad_get_active_agg_info(bond, &ad_info)) {
1250 count = sprintf(buf,"%02x:%02x:%02x:%02x:%02x:%02x\n",
1251 ad_info.partner_system[0],
1252 ad_info.partner_system[1],
1253 ad_info.partner_system[2],
1254 ad_info.partner_system[3],
1255 ad_info.partner_system[4],
1256 ad_info.partner_system[5]) + 1;
1257 }
1258 }
1259 else
1260 count = sprintf(buf, "\n") + 1;
1261
1262 return count;
1263}
1264static CLASS_DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL);
1265
1266
1267
1268static struct attribute *per_bond_attrs[] = {
1269 &class_device_attr_slaves.attr,
1270 &class_device_attr_mode.attr,
1271 &class_device_attr_arp_interval.attr,
1272 &class_device_attr_arp_ip_target.attr,
1273 &class_device_attr_downdelay.attr,
1274 &class_device_attr_updelay.attr,
1275 &class_device_attr_lacp_rate.attr,
1276 &class_device_attr_xmit_hash_policy.attr,
1277 &class_device_attr_miimon.attr,
1278 &class_device_attr_primary.attr,
1279 &class_device_attr_use_carrier.attr,
1280 &class_device_attr_active_slave.attr,
1281 &class_device_attr_mii_status.attr,
1282 &class_device_attr_ad_aggregator.attr,
1283 &class_device_attr_ad_num_ports.attr,
1284 &class_device_attr_ad_actor_key.attr,
1285 &class_device_attr_ad_partner_key.attr,
1286 &class_device_attr_ad_partner_mac.attr,
1287 NULL,
1288};
1289
1290static struct attribute_group bonding_group = {
1291 .name = "bonding",
1292 .attrs = per_bond_attrs,
1293};
1294
1295/*
1296 * Initialize sysfs. This sets up the bonding_masters file in
1297 * /sys/class/net.
1298 */
1299int bond_create_sysfs(void)
1300{
1301 int ret = 0;
1302 struct bonding *firstbond;
1303
1304 init_rwsem(&bonding_rwsem);
1305
1306 /* get the netdev class pointer */
1307 firstbond = container_of(bond_dev_list.next, struct bonding, bond_list);
1308 if (!firstbond)
1309 return -ENODEV;
1310
1311 netdev_class = firstbond->dev->class_dev.class;
1312 if (!netdev_class)
1313 return -ENODEV;
1314
1315 ret = class_create_file(netdev_class, &class_attr_bonding_masters);
1316
1317 return ret;
1318
1319}
1320
1321/*
1322 * Remove /sys/class/net/bonding_masters.
1323 */
1324void bond_destroy_sysfs(void)
1325{
1326 if (netdev_class)
1327 class_remove_file(netdev_class, &class_attr_bonding_masters);
1328}
1329
1330/*
1331 * Initialize sysfs for each bond. This sets up and registers
1332 * the 'bondctl' directory for each individual bond under /sys/class/net.
1333 */
1334int bond_create_sysfs_entry(struct bonding *bond)
1335{
1336 struct net_device *dev = bond->dev;
1337 int err;
1338
1339 err = sysfs_create_group(&(dev->class_dev.kobj), &bonding_group);
1340 if (err) {
1341 printk(KERN_EMERG "eek! didn't create group!\n");
1342 }
1343
1344 if (expected_refcount < 1)
1345 expected_refcount = atomic_read(&bond->dev->class_dev.kobj.kref.refcount);
1346
1347 return err;
1348}
1349/*
1350 * Remove sysfs entries for each bond.
1351 */
1352void bond_destroy_sysfs_entry(struct bonding *bond)
1353{
1354 struct net_device *dev = bond->dev;
1355
1356 sysfs_remove_group(&(dev->class_dev.kobj), &bonding_group);
1357}
1358
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-01 13:28:43 -0500