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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 | * Changes: | |
24 | * | |
25 | * 2004/12/12 - Mitch Williams <mitch.a.williams at intel dot com> | |
26 | * - Initial creation of sysfs interface. | |
27 | * | |
28 | * 2005/06/22 - Radheka Godse <radheka.godse at intel dot com> | |
29 | * - Added ifenslave -c type functionality to sysfs | |
30 | * - Added sysfs files for attributes such as MII Status and | |
31 | * 802.3ad aggregator that are displayed in /proc | |
32 | * - Added "name value" format to sysfs "mode" and | |
33 | * "lacp_rate", for e.g., "active-backup 1" or "slow 0" for | |
34 | * consistency and ease of script parsing | |
35 | * - Fixed reversal of octets in arp_ip_targets via sysfs | |
36 | * - sysfs support to handle bond interface re-naming | |
37 | * - Moved all sysfs entries into /sys/class/net instead of | |
38 | * of using a standalone subsystem. | |
39 | * - Added sysfs symlinks between masters and slaves | |
40 | * - Corrected bugs in sysfs unload path when creating bonds | |
41 | * with existing interface names. | |
42 | * - Removed redundant sysfs stat file since it duplicates slave info | |
43 | * from the proc file | |
44 | * - Fixed errors in sysfs show/store arp targets. | |
45 | * - For consistency with ifenslave, instead of exiting | |
46 | * with an error, updated bonding sysfs to | |
47 | * close and attempt to enslave an up adapter. | |
48 | * - Fixed NULL dereference when adding a slave interface | |
49 | * that does not exist. | |
50 | * - Added checks in sysfs bonding to reject invalid ip addresses | |
51 | * - Synch up with post linux-2.6.12 bonding changes | |
52 | * - Created sysfs bond attrib for xmit_hash_policy | |
53 | * | |
54 | * 2005/09/19 - Mitch Williams <mitch.a.williams at intel dot com> | |
55 | * - Changed semantics of multi-item files to be command-based | |
56 | * instead of list-based. | |
57 | * - Changed ARP target handler to use in_aton instead of sscanf | |
58 | * - Style changes. | |
59 | * 2005/09/27 - Mitch Williams <mitch.a.williams at intel dot com> | |
60 | * - Made line endings consistent. | |
61 | * - Removed "none" from primary output - just put blank instead | |
62 | * - Fixed bug with long interface names | |
63 | */ | |
64 | #include <linux/config.h> | |
65 | #include <linux/kernel.h> | |
66 | #include <linux/module.h> | |
67 | #include <linux/sched.h> | |
68 | #include <linux/device.h> | |
69 | #include <linux/sysdev.h> | |
70 | #include <linux/fs.h> | |
71 | #include <linux/types.h> | |
72 | #include <linux/string.h> | |
73 | #include <linux/netdevice.h> | |
74 | #include <linux/inetdevice.h> | |
75 | #include <linux/in.h> | |
76 | #include <linux/sysfs.h> | |
77 | #include <linux/string.h> | |
78 | #include <linux/ctype.h> | |
79 | #include <linux/inet.h> | |
80 | #include <linux/rtnetlink.h> | |
81 | ||
82 | /* #define BONDING_DEBUG 1 */ | |
83 | #include "bonding.h" | |
84 | #define to_class_dev(obj) container_of(obj,struct class_device,kobj) | |
85 | #define to_net_dev(class) container_of(class, struct net_device, class_dev) | |
86 | #define to_bond(cd) ((struct bonding *)(to_net_dev(cd)->priv)) | |
87 | ||
88 | /*---------------------------- Declarations -------------------------------*/ | |
89 | ||
90 | ||
91 | extern struct list_head bond_dev_list; | |
92 | extern struct bond_params bonding_defaults; | |
93 | extern struct bond_parm_tbl bond_mode_tbl[]; | |
94 | extern struct bond_parm_tbl bond_lacp_tbl[]; | |
95 | extern struct bond_parm_tbl xmit_hashtype_tbl[]; | |
96 | ||
97 | static int expected_refcount = -1; | |
98 | static struct class *netdev_class; | |
99 | /*--------------------------- Data Structures -----------------------------*/ | |
100 | ||
101 | /* Bonding sysfs lock. Why can't we just use the subsytem lock? | |
102 | * Because kobject_register tries to acquire the subsystem lock. If | |
103 | * we already hold the lock (which we would if the user was creating | |
104 | * a new bond through the sysfs interface), we deadlock. | |
105 | * This lock is only needed when deleting a bond - we need to make sure | |
106 | * that we don't collide with an ongoing ioctl. | |
107 | */ | |
108 | ||
109 | struct rw_semaphore bonding_rwsem; | |
110 | ||
111 | ||
112 | ||
113 | ||
114 | /*------------------------------ Functions --------------------------------*/ | |
115 | ||
116 | /* | |
117 | * "show" function for the bond_masters attribute. | |
118 | * The class parameter is ignored. | |
119 | */ | |
120 | static ssize_t bonding_show_bonds(struct class *cls, char *buffer) | |
121 | { | |
122 | int res = 0; | |
123 | struct bonding *bond; | |
124 | ||
125 | down_read(&(bonding_rwsem)); | |
126 | ||
127 | list_for_each_entry(bond, &bond_dev_list, bond_list) { | |
128 | if (res > (PAGE_SIZE - IFNAMSIZ)) { | |
129 | /* not enough space for another interface name */ | |
130 | if ((PAGE_SIZE - res) > 10) | |
131 | res = PAGE_SIZE - 10; | |
132 | res += sprintf(buffer + res, "++more++"); | |
133 | break; | |
134 | } | |
135 | res += sprintf(buffer + res, "%s ", | |
136 | bond->dev->name); | |
137 | } | |
138 | res += sprintf(buffer + res, "\n"); | |
139 | res++; | |
140 | up_read(&(bonding_rwsem)); | |
141 | return res; | |
142 | } | |
143 | ||
144 | /* | |
145 | * "store" function for the bond_masters attribute. This is what | |
146 | * creates and deletes entire bonds. | |
147 | * | |
148 | * The class parameter is ignored. | |
149 | * | |
150 | */ | |
151 | ||
152 | static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t count) | |
153 | { | |
154 | char command[IFNAMSIZ + 1] = {0, }; | |
155 | char *ifname; | |
156 | int res = count; | |
157 | struct bonding *bond; | |
158 | struct bonding *nxt; | |
159 | ||
160 | down_write(&(bonding_rwsem)); | |
161 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ | |
162 | ifname = command + 1; | |
163 | if ((strlen(command) <= 1) || | |
164 | !dev_valid_name(ifname)) | |
165 | goto err_no_cmd; | |
166 | ||
167 | if (command[0] == '+') { | |
168 | ||
169 | /* Check to see if the bond already exists. */ | |
170 | list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) | |
171 | if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { | |
172 | printk(KERN_ERR DRV_NAME | |
173 | ": cannot add bond %s; it already exists\n", | |
174 | ifname); | |
175 | res = -EPERM; | |
176 | goto out; | |
177 | } | |
178 | ||
179 | printk(KERN_INFO DRV_NAME | |
180 | ": %s is being created...\n", ifname); | |
181 | if (bond_create(ifname, &bonding_defaults, &bond)) { | |
182 | printk(KERN_INFO DRV_NAME | |
183 | ": %s interface already exists. Bond creation failed.\n", | |
184 | ifname); | |
185 | res = -EPERM; | |
186 | } | |
187 | goto out; | |
188 | } | |
189 | ||
190 | if (command[0] == '-') { | |
191 | list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) | |
192 | if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { | |
193 | rtnl_lock(); | |
194 | /* check the ref count on the bond's kobject. | |
195 | * If it's > expected, then there's a file open, | |
196 | * and we have to fail. | |
197 | */ | |
198 | if (atomic_read(&bond->dev->class_dev.kobj.kref.refcount) | |
199 | > expected_refcount){ | |
200 | rtnl_unlock(); | |
201 | printk(KERN_INFO DRV_NAME | |
202 | ": Unable remove bond %s due to open references.\n", | |
203 | ifname); | |
204 | res = -EPERM; | |
205 | goto out; | |
206 | } | |
207 | printk(KERN_INFO DRV_NAME | |
208 | ": %s is being deleted...\n", | |
209 | bond->dev->name); | |
210 | unregister_netdevice(bond->dev); | |
211 | bond_deinit(bond->dev); | |
212 | bond_destroy_sysfs_entry(bond); | |
213 | rtnl_unlock(); | |
214 | goto out; | |
215 | } | |
216 | ||
217 | printk(KERN_ERR DRV_NAME | |
218 | ": unable to delete non-existent bond %s\n", ifname); | |
219 | res = -ENODEV; | |
220 | goto out; | |
221 | } | |
222 | ||
223 | err_no_cmd: | |
224 | printk(KERN_ERR DRV_NAME | |
225 | ": no command found in bonding_masters. Use +ifname or -ifname.\n"); | |
226 | res = -EPERM; | |
227 | ||
228 | /* Always return either count or an error. If you return 0, you'll | |
229 | * get called forever, which is bad. | |
230 | */ | |
231 | out: | |
232 | up_write(&(bonding_rwsem)); | |
233 | return res; | |
234 | } | |
235 | /* class attribute for bond_masters file. This ends up in /sys/class/net */ | |
236 | static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO, | |
237 | bonding_show_bonds, bonding_store_bonds); | |
238 | ||
239 | int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave) | |
240 | { | |
241 | char linkname[IFNAMSIZ+7]; | |
242 | int ret = 0; | |
243 | ||
244 | /* first, create a link from the slave back to the master */ | |
245 | ret = sysfs_create_link(&(slave->class_dev.kobj), &(master->class_dev.kobj), | |
246 | "master"); | |
247 | if (ret) | |
248 | return ret; | |
249 | /* next, create a link from the master to the slave */ | |
250 | sprintf(linkname,"slave_%s",slave->name); | |
251 | ret = sysfs_create_link(&(master->class_dev.kobj), &(slave->class_dev.kobj), | |
252 | linkname); | |
253 | return ret; | |
254 | ||
255 | } | |
256 | ||
257 | void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave) | |
258 | { | |
259 | char linkname[IFNAMSIZ+7]; | |
260 | ||
261 | sysfs_remove_link(&(slave->class_dev.kobj), "master"); | |
262 | sprintf(linkname,"slave_%s",slave->name); | |
263 | sysfs_remove_link(&(master->class_dev.kobj), linkname); | |
264 | } | |
265 | ||
266 | ||
267 | /* | |
268 | * Show the slaves in the current bond. | |
269 | */ | |
270 | static ssize_t bonding_show_slaves(struct class_device *cd, char *buf) | |
271 | { | |
272 | struct slave *slave; | |
273 | int i, res = 0; | |
274 | struct bonding *bond = to_bond(cd); | |
275 | ||
276 | read_lock_bh(&bond->lock); | |
277 | bond_for_each_slave(bond, slave, i) { | |
278 | if (res > (PAGE_SIZE - IFNAMSIZ)) { | |
279 | /* not enough space for another interface name */ | |
280 | if ((PAGE_SIZE - res) > 10) | |
281 | res = PAGE_SIZE - 10; | |
282 | res += sprintf(buf + res, "++more++"); | |
283 | break; | |
284 | } | |
285 | res += sprintf(buf + res, "%s ", slave->dev->name); | |
286 | } | |
287 | read_unlock_bh(&bond->lock); | |
288 | res += sprintf(buf + res, "\n"); | |
289 | res++; | |
290 | return res; | |
291 | } | |
292 | ||
293 | /* | |
294 | * Set the slaves in the current bond. The bond interface must be | |
295 | * up for this to succeed. | |
296 | * This function is largely the same flow as bonding_update_bonds(). | |
297 | */ | |
298 | static ssize_t bonding_store_slaves(struct class_device *cd, const char *buffer, size_t count) | |
299 | { | |
300 | char command[IFNAMSIZ + 1] = { 0, }; | |
301 | char *ifname; | |
302 | int i, res, found, ret = count; | |
303 | struct slave *slave; | |
304 | struct net_device *dev = 0; | |
305 | struct bonding *bond = to_bond(cd); | |
306 | ||
307 | /* Quick sanity check -- is the bond interface up? */ | |
308 | if (!(bond->dev->flags & IFF_UP)) { | |
309 | printk(KERN_ERR DRV_NAME | |
310 | ": %s: Unable to update slaves because interface is down.\n", | |
311 | bond->dev->name); | |
312 | ret = -EPERM; | |
313 | goto out; | |
314 | } | |
315 | ||
316 | /* Note: We can't hold bond->lock here, as bond_create grabs it. */ | |
317 | ||
318 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ | |
319 | ifname = command + 1; | |
320 | if ((strlen(command) <= 1) || | |
321 | !dev_valid_name(ifname)) | |
322 | goto err_no_cmd; | |
323 | ||
324 | if (command[0] == '+') { | |
325 | ||
326 | /* Got a slave name in ifname. Is it already in the list? */ | |
327 | found = 0; | |
328 | read_lock_bh(&bond->lock); | |
329 | bond_for_each_slave(bond, slave, i) | |
330 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
331 | printk(KERN_ERR DRV_NAME | |
332 | ": %s: Interface %s is already enslaved!\n", | |
333 | bond->dev->name, ifname); | |
334 | ret = -EPERM; | |
335 | read_unlock_bh(&bond->lock); | |
336 | goto out; | |
337 | } | |
338 | ||
339 | read_unlock_bh(&bond->lock); | |
340 | printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n", | |
341 | bond->dev->name, ifname); | |
342 | dev = dev_get_by_name(ifname); | |
343 | if (!dev) { | |
344 | printk(KERN_INFO DRV_NAME | |
345 | ": %s: Interface %s does not exist!\n", | |
346 | bond->dev->name, ifname); | |
347 | ret = -EPERM; | |
348 | goto out; | |
349 | } | |
350 | else | |
351 | dev_put(dev); | |
352 | ||
353 | if (dev->flags & IFF_UP) { | |
354 | printk(KERN_ERR DRV_NAME | |
355 | ": %s: Error: Unable to enslave %s " | |
356 | "because it is already up.\n", | |
357 | bond->dev->name, dev->name); | |
358 | ret = -EPERM; | |
359 | goto out; | |
360 | } | |
361 | /* If this is the first slave, then we need to set | |
362 | the master's hardware address to be the same as the | |
363 | slave's. */ | |
364 | if (!(*((u32 *) & (bond->dev->dev_addr[0])))) { | |
365 | memcpy(bond->dev->dev_addr, dev->dev_addr, | |
366 | dev->addr_len); | |
367 | } | |
368 | ||
369 | /* Set the slave's MTU to match the bond */ | |
370 | if (dev->mtu != bond->dev->mtu) { | |
371 | if (dev->change_mtu) { | |
372 | res = dev->change_mtu(dev, | |
373 | bond->dev->mtu); | |
374 | if (res) { | |
375 | ret = res; | |
376 | goto out; | |
377 | } | |
378 | } else { | |
379 | dev->mtu = bond->dev->mtu; | |
380 | } | |
381 | } | |
382 | rtnl_lock(); | |
383 | res = bond_enslave(bond->dev, dev); | |
384 | rtnl_unlock(); | |
385 | if (res) { | |
386 | ret = res; | |
387 | } | |
388 | goto out; | |
389 | } | |
390 | ||
391 | if (command[0] == '-') { | |
392 | dev = NULL; | |
393 | bond_for_each_slave(bond, slave, i) | |
394 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
395 | dev = slave->dev; | |
396 | break; | |
397 | } | |
398 | if (dev) { | |
399 | printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n", | |
400 | bond->dev->name, dev->name); | |
401 | rtnl_lock(); | |
402 | res = bond_release(bond->dev, dev); | |
403 | rtnl_unlock(); | |
404 | if (res) { | |
405 | ret = res; | |
406 | goto out; | |
407 | } | |
408 | /* set the slave MTU to the default */ | |
409 | if (dev->change_mtu) { | |
410 | dev->change_mtu(dev, 1500); | |
411 | } else { | |
412 | dev->mtu = 1500; | |
413 | } | |
414 | } | |
415 | else { | |
416 | printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n", | |
417 | ifname, bond->dev->name); | |
418 | ret = -ENODEV; | |
419 | } | |
420 | goto out; | |
421 | } | |
422 | ||
423 | err_no_cmd: | |
424 | printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name); | |
425 | ret = -EPERM; | |
426 | ||
427 | out: | |
428 | return ret; | |
429 | } | |
430 | ||
431 | static CLASS_DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves); | |
432 | ||
433 | /* | |
434 | * Show and set the bonding mode. The bond interface must be down to | |
435 | * change the mode. | |
436 | */ | |
437 | static ssize_t bonding_show_mode(struct class_device *cd, char *buf) | |
438 | { | |
439 | struct bonding *bond = to_bond(cd); | |
440 | ||
441 | return sprintf(buf, "%s %d\n", | |
442 | bond_mode_tbl[bond->params.mode].modename, | |
443 | bond->params.mode) + 1; | |
444 | } | |
445 | ||
446 | static ssize_t bonding_store_mode(struct class_device *cd, const char *buf, size_t count) | |
447 | { | |
448 | int new_value, ret = count; | |
449 | struct bonding *bond = to_bond(cd); | |
450 | ||
451 | if (bond->dev->flags & IFF_UP) { | |
452 | printk(KERN_ERR DRV_NAME | |
453 | ": unable to update mode of %s because interface is up.\n", | |
454 | bond->dev->name); | |
455 | ret = -EPERM; | |
456 | goto out; | |
457 | } | |
458 | ||
459 | new_value = bond_parse_parm((char *)buf, bond_mode_tbl); | |
460 | if (new_value < 0) { | |
461 | printk(KERN_ERR DRV_NAME | |
462 | ": %s: Ignoring invalid mode value %.*s.\n", | |
463 | bond->dev->name, | |
464 | (int)strlen(buf) - 1, buf); | |
465 | ret = -EINVAL; | |
466 | goto out; | |
467 | } else { | |
468 | bond->params.mode = new_value; | |
469 | bond_set_mode_ops(bond, bond->params.mode); | |
470 | printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n", | |
471 | bond->dev->name, bond_mode_tbl[new_value].modename, new_value); | |
472 | } | |
473 | out: | |
474 | return ret; | |
475 | } | |
476 | static CLASS_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode); | |
477 | ||
478 | /* | |
479 | * Show and set the bonding transmit hash method. The bond interface must be down to | |
480 | * change the xmit hash policy. | |
481 | */ | |
482 | static ssize_t bonding_show_xmit_hash(struct class_device *cd, char *buf) | |
483 | { | |
484 | int count; | |
485 | struct bonding *bond = to_bond(cd); | |
486 | ||
487 | if ((bond->params.mode != BOND_MODE_XOR) && | |
488 | (bond->params.mode != BOND_MODE_8023AD)) { | |
489 | // Not Applicable | |
490 | count = sprintf(buf, "NA\n") + 1; | |
491 | } else { | |
492 | count = sprintf(buf, "%s %d\n", | |
493 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
494 | bond->params.xmit_policy) + 1; | |
495 | } | |
496 | ||
497 | return count; | |
498 | } | |
499 | ||
500 | static ssize_t bonding_store_xmit_hash(struct class_device *cd, const char *buf, size_t count) | |
501 | { | |
502 | int new_value, ret = count; | |
503 | struct bonding *bond = to_bond(cd); | |
504 | ||
505 | if (bond->dev->flags & IFF_UP) { | |
506 | printk(KERN_ERR DRV_NAME | |
507 | "%s: Interface is up. Unable to update xmit policy.\n", | |
508 | bond->dev->name); | |
509 | ret = -EPERM; | |
510 | goto out; | |
511 | } | |
512 | ||
513 | if ((bond->params.mode != BOND_MODE_XOR) && | |
514 | (bond->params.mode != BOND_MODE_8023AD)) { | |
515 | printk(KERN_ERR DRV_NAME | |
516 | "%s: Transmit hash policy is irrelevant in this mode.\n", | |
517 | bond->dev->name); | |
518 | ret = -EPERM; | |
519 | goto out; | |
520 | } | |
521 | ||
522 | new_value = bond_parse_parm((char *)buf, xmit_hashtype_tbl); | |
523 | if (new_value < 0) { | |
524 | printk(KERN_ERR DRV_NAME | |
525 | ": %s: Ignoring invalid xmit hash policy value %.*s.\n", | |
526 | bond->dev->name, | |
527 | (int)strlen(buf) - 1, buf); | |
528 | ret = -EINVAL; | |
529 | goto out; | |
530 | } else { | |
531 | bond->params.xmit_policy = new_value; | |
532 | bond_set_mode_ops(bond, bond->params.mode); | |
533 | printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n", | |
534 | bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value); | |
535 | } | |
536 | out: | |
537 | return ret; | |
538 | } | |
539 | static CLASS_DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash); | |
540 | ||
541 | /* | |
542 | * Show and set the arp timer interval. There are two tricky bits | |
543 | * here. First, if ARP monitoring is activated, then we must disable | |
544 | * MII monitoring. Second, if the ARP timer isn't running, we must | |
545 | * start it. | |
546 | */ | |
547 | static ssize_t bonding_show_arp_interval(struct class_device *cd, char *buf) | |
548 | { | |
549 | struct bonding *bond = to_bond(cd); | |
550 | ||
551 | return sprintf(buf, "%d\n", bond->params.arp_interval) + 1; | |
552 | } | |
553 | ||
554 | static ssize_t bonding_store_arp_interval(struct class_device *cd, const char *buf, size_t count) | |
555 | { | |
556 | int new_value, ret = count; | |
557 | struct bonding *bond = to_bond(cd); | |
558 | ||
559 | if (sscanf(buf, "%d", &new_value) != 1) { | |
560 | printk(KERN_ERR DRV_NAME | |
561 | ": %s: no arp_interval value specified.\n", | |
562 | bond->dev->name); | |
563 | ret = -EINVAL; | |
564 | goto out; | |
565 | } | |
566 | if (new_value < 0) { | |
567 | printk(KERN_ERR DRV_NAME | |
568 | ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n", | |
569 | bond->dev->name, new_value, INT_MAX); | |
570 | ret = -EINVAL; | |
571 | goto out; | |
572 | } | |
573 | ||
574 | printk(KERN_INFO DRV_NAME | |
575 | ": %s: Setting ARP monitoring interval to %d.\n", | |
576 | bond->dev->name, new_value); | |
577 | bond->params.arp_interval = new_value; | |
578 | if (bond->params.miimon) { | |
579 | printk(KERN_INFO DRV_NAME | |
580 | ": %s: ARP monitoring cannot be used with MII monitoring. " | |
581 | "%s Disabling MII monitoring.\n", | |
582 | bond->dev->name, bond->dev->name); | |
583 | bond->params.miimon = 0; | |
584 | /* Kill MII timer, else it brings bond's link down */ | |
585 | if (bond->arp_timer.function) { | |
586 | printk(KERN_INFO DRV_NAME | |
587 | ": %s: Kill MII timer, else it brings bond's link down...\n", | |
588 | bond->dev->name); | |
589 | del_timer_sync(&bond->mii_timer); | |
590 | } | |
591 | } | |
592 | if (!bond->params.arp_targets[0]) { | |
593 | printk(KERN_INFO DRV_NAME | |
594 | ": %s: ARP monitoring has been set up, " | |
595 | "but no ARP targets have been specified.\n", | |
596 | bond->dev->name); | |
597 | } | |
598 | if (bond->dev->flags & IFF_UP) { | |
599 | /* If the interface is up, we may need to fire off | |
600 | * the ARP timer. If the interface is down, the | |
601 | * timer will get fired off when the open function | |
602 | * is called. | |
603 | */ | |
604 | if (bond->arp_timer.function) { | |
605 | /* The timer's already set up, so fire it off */ | |
606 | mod_timer(&bond->arp_timer, jiffies + 1); | |
607 | } else { | |
608 | /* Set up the timer. */ | |
609 | init_timer(&bond->arp_timer); | |
610 | bond->arp_timer.expires = jiffies + 1; | |
611 | bond->arp_timer.data = | |
612 | (unsigned long) bond->dev; | |
613 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { | |
614 | bond->arp_timer.function = | |
615 | (void *) | |
616 | &bond_activebackup_arp_mon; | |
617 | } else { | |
618 | bond->arp_timer.function = | |
619 | (void *) | |
620 | &bond_loadbalance_arp_mon; | |
621 | } | |
622 | add_timer(&bond->arp_timer); | |
623 | } | |
624 | } | |
625 | ||
626 | out: | |
627 | return ret; | |
628 | } | |
629 | static CLASS_DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR , bonding_show_arp_interval, bonding_store_arp_interval); | |
630 | ||
631 | /* | |
632 | * Show and set the arp targets. | |
633 | */ | |
634 | static ssize_t bonding_show_arp_targets(struct class_device *cd, char *buf) | |
635 | { | |
636 | int i, res = 0; | |
637 | struct bonding *bond = to_bond(cd); | |
638 | ||
639 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { | |
640 | if (bond->params.arp_targets[i]) | |
641 | res += sprintf(buf + res, "%u.%u.%u.%u ", | |
642 | NIPQUAD(bond->params.arp_targets[i])); | |
643 | } | |
644 | if (res) | |
645 | res--; /* eat the leftover space */ | |
646 | res += sprintf(buf + res, "\n"); | |
647 | res++; | |
648 | return res; | |
649 | } | |
650 | ||
651 | static ssize_t bonding_store_arp_targets(struct class_device *cd, const char *buf, size_t count) | |
652 | { | |
653 | u32 newtarget; | |
654 | int i = 0, done = 0, ret = count; | |
655 | struct bonding *bond = to_bond(cd); | |
656 | u32 *targets; | |
657 | ||
658 | targets = bond->params.arp_targets; | |
659 | newtarget = in_aton(buf + 1); | |
660 | /* look for adds */ | |
661 | if (buf[0] == '+') { | |
662 | if ((newtarget == 0) || (newtarget == INADDR_BROADCAST)) { | |
663 | printk(KERN_ERR DRV_NAME | |
664 | ": %s: invalid ARP target %u.%u.%u.%u specified for addition\n", | |
665 | bond->dev->name, NIPQUAD(newtarget)); | |
666 | ret = -EINVAL; | |
667 | goto out; | |
668 | } | |
669 | /* look for an empty slot to put the target in, and check for dupes */ | |
670 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
671 | if (targets[i] == newtarget) { /* duplicate */ | |
672 | printk(KERN_ERR DRV_NAME | |
673 | ": %s: ARP target %u.%u.%u.%u is already present\n", | |
674 | bond->dev->name, NIPQUAD(newtarget)); | |
675 | if (done) | |
676 | targets[i] = 0; | |
677 | ret = -EINVAL; | |
678 | goto out; | |
679 | } | |
680 | if (targets[i] == 0 && !done) { | |
681 | printk(KERN_INFO DRV_NAME | |
682 | ": %s: adding ARP target %d.%d.%d.%d.\n", | |
683 | bond->dev->name, NIPQUAD(newtarget)); | |
684 | done = 1; | |
685 | targets[i] = newtarget; | |
686 | } | |
687 | } | |
688 | if (!done) { | |
689 | printk(KERN_ERR DRV_NAME | |
690 | ": %s: ARP target table is full!\n", | |
691 | bond->dev->name); | |
692 | ret = -EINVAL; | |
693 | goto out; | |
694 | } | |
695 | ||
696 | } | |
697 | else if (buf[0] == '-') { | |
698 | if ((newtarget == 0) || (newtarget == INADDR_BROADCAST)) { | |
699 | printk(KERN_ERR DRV_NAME | |
700 | ": %s: invalid ARP target %d.%d.%d.%d specified for removal\n", | |
701 | bond->dev->name, NIPQUAD(newtarget)); | |
702 | ret = -EINVAL; | |
703 | goto out; | |
704 | } | |
705 | ||
706 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
707 | if (targets[i] == newtarget) { | |
708 | printk(KERN_INFO DRV_NAME | |
709 | ": %s: removing ARP target %d.%d.%d.%d.\n", | |
710 | bond->dev->name, NIPQUAD(newtarget)); | |
711 | targets[i] = 0; | |
712 | done = 1; | |
713 | } | |
714 | } | |
715 | if (!done) { | |
716 | printk(KERN_INFO DRV_NAME | |
717 | ": %s: unable to remove nonexistent ARP target %d.%d.%d.%d.\n", | |
718 | bond->dev->name, NIPQUAD(newtarget)); | |
719 | ret = -EINVAL; | |
720 | goto out; | |
721 | } | |
722 | } | |
723 | else { | |
724 | printk(KERN_ERR DRV_NAME ": no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n", | |
725 | bond->dev->name); | |
726 | ret = -EPERM; | |
727 | goto out; | |
728 | } | |
729 | ||
730 | out: | |
731 | return ret; | |
732 | } | |
733 | static CLASS_DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets); | |
734 | ||
735 | /* | |
736 | * Show and set the up and down delays. These must be multiples of the | |
737 | * MII monitoring value, and are stored internally as the multiplier. | |
738 | * Thus, we must translate to MS for the real world. | |
739 | */ | |
740 | static ssize_t bonding_show_downdelay(struct class_device *cd, char *buf) | |
741 | { | |
742 | struct bonding *bond = to_bond(cd); | |
743 | ||
744 | return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon) + 1; | |
745 | } | |
746 | ||
747 | static ssize_t bonding_store_downdelay(struct class_device *cd, const char *buf, size_t count) | |
748 | { | |
749 | int new_value, ret = count; | |
750 | struct bonding *bond = to_bond(cd); | |
751 | ||
752 | if (!(bond->params.miimon)) { | |
753 | printk(KERN_ERR DRV_NAME | |
754 | ": %s: Unable to set down delay as MII monitoring is disabled\n", | |
755 | bond->dev->name); | |
756 | ret = -EPERM; | |
757 | goto out; | |
758 | } | |
759 | ||
760 | if (sscanf(buf, "%d", &new_value) != 1) { | |
761 | printk(KERN_ERR DRV_NAME | |
762 | ": %s: no down delay value specified.\n", | |
763 | bond->dev->name); | |
764 | ret = -EINVAL; | |
765 | goto out; | |
766 | } | |
767 | if (new_value < 0) { | |
768 | printk(KERN_ERR DRV_NAME | |
769 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
770 | bond->dev->name, new_value, 1, INT_MAX); | |
771 | ret = -EINVAL; | |
772 | goto out; | |
773 | } else { | |
774 | if ((new_value % bond->params.miimon) != 0) { | |
775 | printk(KERN_WARNING DRV_NAME | |
776 | ": %s: Warning: down delay (%d) is not a multiple " | |
777 | "of miimon (%d), delay rounded to %d ms\n", | |
778 | bond->dev->name, new_value, bond->params.miimon, | |
779 | (new_value / bond->params.miimon) * | |
780 | bond->params.miimon); | |
781 | } | |
782 | bond->params.downdelay = new_value / bond->params.miimon; | |
783 | printk(KERN_INFO DRV_NAME ": %s: Setting down delay to %d.\n", | |
784 | bond->dev->name, bond->params.downdelay * bond->params.miimon); | |
785 | ||
786 | } | |
787 | ||
788 | out: | |
789 | return ret; | |
790 | } | |
791 | static CLASS_DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay); | |
792 | ||
793 | static ssize_t bonding_show_updelay(struct class_device *cd, char *buf) | |
794 | { | |
795 | struct bonding *bond = to_bond(cd); | |
796 | ||
797 | return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon) + 1; | |
798 | ||
799 | } | |
800 | ||
801 | static ssize_t bonding_store_updelay(struct class_device *cd, const char *buf, size_t count) | |
802 | { | |
803 | int new_value, ret = count; | |
804 | struct bonding *bond = to_bond(cd); | |
805 | ||
806 | if (!(bond->params.miimon)) { | |
807 | printk(KERN_ERR DRV_NAME | |
808 | ": %s: Unable to set up delay as MII monitoring is disabled\n", | |
809 | bond->dev->name); | |
810 | ret = -EPERM; | |
811 | goto out; | |
812 | } | |
813 | ||
814 | if (sscanf(buf, "%d", &new_value) != 1) { | |
815 | printk(KERN_ERR DRV_NAME | |
816 | ": %s: no up delay value specified.\n", | |
817 | bond->dev->name); | |
818 | ret = -EINVAL; | |
819 | goto out; | |
820 | } | |
821 | if (new_value < 0) { | |
822 | printk(KERN_ERR DRV_NAME | |
823 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
824 | bond->dev->name, new_value, 1, INT_MAX); | |
825 | ret = -EINVAL; | |
826 | goto out; | |
827 | } else { | |
828 | if ((new_value % bond->params.miimon) != 0) { | |
829 | printk(KERN_WARNING DRV_NAME | |
830 | ": %s: Warning: up delay (%d) is not a multiple " | |
831 | "of miimon (%d), updelay rounded to %d ms\n", | |
832 | bond->dev->name, new_value, bond->params.miimon, | |
833 | (new_value / bond->params.miimon) * | |
834 | bond->params.miimon); | |
835 | } | |
836 | bond->params.updelay = new_value / bond->params.miimon; | |
837 | printk(KERN_INFO DRV_NAME ": %s: Setting up delay to %d.\n", | |
838 | bond->dev->name, bond->params.updelay * bond->params.miimon); | |
839 | ||
840 | } | |
841 | ||
842 | out: | |
843 | return ret; | |
844 | } | |
845 | static CLASS_DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR , bonding_show_updelay, bonding_store_updelay); | |
846 | ||
847 | /* | |
848 | * Show and set the LACP interval. Interface must be down, and the mode | |
849 | * must be set to 802.3ad mode. | |
850 | */ | |
851 | static ssize_t bonding_show_lacp(struct class_device *cd, char *buf) | |
852 | { | |
853 | struct bonding *bond = to_bond(cd); | |
854 | ||
855 | return sprintf(buf, "%s %d\n", | |
856 | bond_lacp_tbl[bond->params.lacp_fast].modename, | |
857 | bond->params.lacp_fast) + 1; | |
858 | } | |
859 | ||
860 | static ssize_t bonding_store_lacp(struct class_device *cd, const char *buf, size_t count) | |
861 | { | |
862 | int new_value, ret = count; | |
863 | struct bonding *bond = to_bond(cd); | |
864 | ||
865 | if (bond->dev->flags & IFF_UP) { | |
866 | printk(KERN_ERR DRV_NAME | |
867 | ": %s: Unable to update LACP rate because interface is up.\n", | |
868 | bond->dev->name); | |
869 | ret = -EPERM; | |
870 | goto out; | |
871 | } | |
872 | ||
873 | if (bond->params.mode != BOND_MODE_8023AD) { | |
874 | printk(KERN_ERR DRV_NAME | |
875 | ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n", | |
876 | bond->dev->name); | |
877 | ret = -EPERM; | |
878 | goto out; | |
879 | } | |
880 | ||
881 | new_value = bond_parse_parm((char *)buf, bond_lacp_tbl); | |
882 | ||
883 | if ((new_value == 1) || (new_value == 0)) { | |
884 | bond->params.lacp_fast = new_value; | |
885 | printk(KERN_INFO DRV_NAME | |
886 | ": %s: Setting LACP rate to %s (%d).\n", | |
887 | bond->dev->name, bond_lacp_tbl[new_value].modename, new_value); | |
888 | } else { | |
889 | printk(KERN_ERR DRV_NAME | |
890 | ": %s: Ignoring invalid LACP rate value %.*s.\n", | |
891 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
892 | ret = -EINVAL; | |
893 | } | |
894 | out: | |
895 | return ret; | |
896 | } | |
897 | static CLASS_DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp); | |
898 | ||
899 | /* | |
900 | * Show and set the MII monitor interval. There are two tricky bits | |
901 | * here. First, if MII monitoring is activated, then we must disable | |
902 | * ARP monitoring. Second, if the timer isn't running, we must | |
903 | * start it. | |
904 | */ | |
905 | static ssize_t bonding_show_miimon(struct class_device *cd, char *buf) | |
906 | { | |
907 | struct bonding *bond = to_bond(cd); | |
908 | ||
909 | return sprintf(buf, "%d\n", bond->params.miimon) + 1; | |
910 | } | |
911 | ||
912 | static ssize_t bonding_store_miimon(struct class_device *cd, const char *buf, size_t count) | |
913 | { | |
914 | int new_value, ret = count; | |
915 | struct bonding *bond = to_bond(cd); | |
916 | ||
917 | if (sscanf(buf, "%d", &new_value) != 1) { | |
918 | printk(KERN_ERR DRV_NAME | |
919 | ": %s: no miimon value specified.\n", | |
920 | bond->dev->name); | |
921 | ret = -EINVAL; | |
922 | goto out; | |
923 | } | |
924 | if (new_value < 0) { | |
925 | printk(KERN_ERR DRV_NAME | |
926 | ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n", | |
927 | bond->dev->name, new_value, 1, INT_MAX); | |
928 | ret = -EINVAL; | |
929 | goto out; | |
930 | } else { | |
931 | printk(KERN_INFO DRV_NAME | |
932 | ": %s: Setting MII monitoring interval to %d.\n", | |
933 | bond->dev->name, new_value); | |
934 | bond->params.miimon = new_value; | |
935 | if(bond->params.updelay) | |
936 | printk(KERN_INFO DRV_NAME | |
937 | ": %s: Note: Updating updelay (to %d) " | |
938 | "since it is a multiple of the miimon value.\n", | |
939 | bond->dev->name, | |
940 | bond->params.updelay * bond->params.miimon); | |
941 | if(bond->params.downdelay) | |
942 | printk(KERN_INFO DRV_NAME | |
943 | ": %s: Note: Updating downdelay (to %d) " | |
944 | "since it is a multiple of the miimon value.\n", | |
945 | bond->dev->name, | |
946 | bond->params.downdelay * bond->params.miimon); | |
947 | if (bond->params.arp_interval) { | |
948 | printk(KERN_INFO DRV_NAME | |
949 | ": %s: MII monitoring cannot be used with " | |
950 | "ARP monitoring. Disabling ARP monitoring...\n", | |
951 | bond->dev->name); | |
952 | bond->params.arp_interval = 0; | |
953 | /* Kill ARP timer, else it brings bond's link down */ | |
954 | if (bond->mii_timer.function) { | |
955 | printk(KERN_INFO DRV_NAME | |
956 | ": %s: Kill ARP timer, else it brings bond's link down...\n", | |
957 | bond->dev->name); | |
958 | del_timer_sync(&bond->arp_timer); | |
959 | } | |
960 | } | |
961 | ||
962 | if (bond->dev->flags & IFF_UP) { | |
963 | /* If the interface is up, we may need to fire off | |
964 | * the MII timer. If the interface is down, the | |
965 | * timer will get fired off when the open function | |
966 | * is called. | |
967 | */ | |
968 | if (bond->mii_timer.function) { | |
969 | /* The timer's already set up, so fire it off */ | |
970 | mod_timer(&bond->mii_timer, jiffies + 1); | |
971 | } else { | |
972 | /* Set up the timer. */ | |
973 | init_timer(&bond->mii_timer); | |
974 | bond->mii_timer.expires = jiffies + 1; | |
975 | bond->mii_timer.data = | |
976 | (unsigned long) bond->dev; | |
977 | bond->mii_timer.function = | |
978 | (void *) &bond_mii_monitor; | |
979 | add_timer(&bond->mii_timer); | |
980 | } | |
981 | } | |
982 | } | |
983 | out: | |
984 | return ret; | |
985 | } | |
986 | static CLASS_DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR, bonding_show_miimon, bonding_store_miimon); | |
987 | ||
988 | /* | |
989 | * Show and set the primary slave. The store function is much | |
990 | * simpler than bonding_store_slaves function because it only needs to | |
991 | * handle one interface name. | |
992 | * The bond must be a mode that supports a primary for this be | |
993 | * set. | |
994 | */ | |
995 | static ssize_t bonding_show_primary(struct class_device *cd, char *buf) | |
996 | { | |
997 | int count = 0; | |
998 | struct bonding *bond = to_bond(cd); | |
999 | ||
1000 | if (bond->primary_slave) | |
1001 | count = sprintf(buf, "%s\n", bond->primary_slave->dev->name) + 1; | |
1002 | else | |
1003 | count = sprintf(buf, "\n") + 1; | |
1004 | ||
1005 | return count; | |
1006 | } | |
1007 | ||
1008 | static ssize_t bonding_store_primary(struct class_device *cd, const char *buf, size_t count) | |
1009 | { | |
1010 | int i; | |
1011 | struct slave *slave; | |
1012 | struct bonding *bond = to_bond(cd); | |
1013 | ||
1014 | write_lock_bh(&bond->lock); | |
1015 | if (!USES_PRIMARY(bond->params.mode)) { | |
1016 | printk(KERN_INFO DRV_NAME | |
1017 | ": %s: Unable to set primary slave; %s is in mode %d\n", | |
1018 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1019 | } else { | |
1020 | bond_for_each_slave(bond, slave, i) { | |
1021 | if (strnicmp | |
1022 | (slave->dev->name, buf, | |
1023 | strlen(slave->dev->name)) == 0) { | |
1024 | printk(KERN_INFO DRV_NAME | |
1025 | ": %s: Setting %s as primary slave.\n", | |
1026 | bond->dev->name, slave->dev->name); | |
1027 | bond->primary_slave = slave; | |
1028 | bond_select_active_slave(bond); | |
1029 | goto out; | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | /* if we got here, then we didn't match the name of any slave */ | |
1034 | ||
1035 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1036 | printk(KERN_INFO DRV_NAME | |
1037 | ": %s: Setting primary slave to None.\n", | |
1038 | bond->dev->name); | |
1039 | bond->primary_slave = 0; | |
1040 | bond_select_active_slave(bond); | |
1041 | } else { | |
1042 | printk(KERN_INFO DRV_NAME | |
1043 | ": %s: Unable to set %.*s as primary slave as it is not a slave.\n", | |
1044 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1045 | } | |
1046 | } | |
1047 | out: | |
1048 | write_unlock_bh(&bond->lock); | |
1049 | return count; | |
1050 | } | |
1051 | static CLASS_DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, bonding_show_primary, bonding_store_primary); | |
1052 | ||
1053 | /* | |
1054 | * Show and set the use_carrier flag. | |
1055 | */ | |
1056 | static ssize_t bonding_show_carrier(struct class_device *cd, char *buf) | |
1057 | { | |
1058 | struct bonding *bond = to_bond(cd); | |
1059 | ||
1060 | return sprintf(buf, "%d\n", bond->params.use_carrier) + 1; | |
1061 | } | |
1062 | ||
1063 | static ssize_t bonding_store_carrier(struct class_device *cd, const char *buf, size_t count) | |
1064 | { | |
1065 | int new_value, ret = count; | |
1066 | struct bonding *bond = to_bond(cd); | |
1067 | ||
1068 | ||
1069 | if (sscanf(buf, "%d", &new_value) != 1) { | |
1070 | printk(KERN_ERR DRV_NAME | |
1071 | ": %s: no use_carrier value specified.\n", | |
1072 | bond->dev->name); | |
1073 | ret = -EINVAL; | |
1074 | goto out; | |
1075 | } | |
1076 | if ((new_value == 0) || (new_value == 1)) { | |
1077 | bond->params.use_carrier = new_value; | |
1078 | printk(KERN_INFO DRV_NAME ": %s: Setting use_carrier to %d.\n", | |
1079 | bond->dev->name, new_value); | |
1080 | } else { | |
1081 | printk(KERN_INFO DRV_NAME | |
1082 | ": %s: Ignoring invalid use_carrier value %d.\n", | |
1083 | bond->dev->name, new_value); | |
1084 | } | |
1085 | out: | |
1086 | return count; | |
1087 | } | |
1088 | static CLASS_DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, bonding_show_carrier, bonding_store_carrier); | |
1089 | ||
1090 | ||
1091 | /* | |
1092 | * Show and set currently active_slave. | |
1093 | */ | |
1094 | static ssize_t bonding_show_active_slave(struct class_device *cd, char *buf) | |
1095 | { | |
1096 | struct slave *curr; | |
1097 | struct bonding *bond = to_bond(cd); | |
1098 | int count; | |
1099 | ||
1100 | ||
1101 | read_lock(&bond->curr_slave_lock); | |
1102 | curr = bond->curr_active_slave; | |
1103 | read_unlock(&bond->curr_slave_lock); | |
1104 | ||
1105 | if (USES_PRIMARY(bond->params.mode) && curr) | |
1106 | count = sprintf(buf, "%s\n", curr->dev->name) + 1; | |
1107 | else | |
1108 | count = sprintf(buf, "\n") + 1; | |
1109 | return count; | |
1110 | } | |
1111 | ||
1112 | static ssize_t bonding_store_active_slave(struct class_device *cd, const char *buf, size_t count) | |
1113 | { | |
1114 | int i; | |
1115 | struct slave *slave; | |
1116 | struct slave *old_active = NULL; | |
1117 | struct slave *new_active = NULL; | |
1118 | struct bonding *bond = to_bond(cd); | |
1119 | ||
1120 | write_lock_bh(&bond->lock); | |
1121 | if (!USES_PRIMARY(bond->params.mode)) { | |
1122 | printk(KERN_INFO DRV_NAME | |
1123 | ": %s: Unable to change active slave; %s is in mode %d\n", | |
1124 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1125 | } else { | |
1126 | bond_for_each_slave(bond, slave, i) { | |
1127 | if (strnicmp | |
1128 | (slave->dev->name, buf, | |
1129 | strlen(slave->dev->name)) == 0) { | |
1130 | old_active = bond->curr_active_slave; | |
1131 | new_active = slave; | |
1132 | if (new_active && (new_active == old_active)) { | |
1133 | /* do nothing */ | |
1134 | printk(KERN_INFO DRV_NAME | |
1135 | ": %s: %s is already the current active slave.\n", | |
1136 | bond->dev->name, slave->dev->name); | |
1137 | goto out; | |
1138 | } | |
1139 | else { | |
1140 | if ((new_active) && | |
1141 | (old_active) && | |
1142 | (new_active->link == BOND_LINK_UP) && | |
1143 | IS_UP(new_active->dev)) { | |
1144 | printk(KERN_INFO DRV_NAME | |
1145 | ": %s: Setting %s as active slave.\n", | |
1146 | bond->dev->name, slave->dev->name); | |
1147 | bond_change_active_slave(bond, new_active); | |
1148 | } | |
1149 | else { | |
1150 | printk(KERN_INFO DRV_NAME | |
1151 | ": %s: Could not set %s as active slave; " | |
1152 | "either %s is down or the link is down.\n", | |
1153 | bond->dev->name, slave->dev->name, | |
1154 | slave->dev->name); | |
1155 | } | |
1156 | goto out; | |
1157 | } | |
1158 | } | |
1159 | } | |
1160 | ||
1161 | /* if we got here, then we didn't match the name of any slave */ | |
1162 | ||
1163 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1164 | printk(KERN_INFO DRV_NAME | |
1165 | ": %s: Setting active slave to None.\n", | |
1166 | bond->dev->name); | |
1167 | bond->primary_slave = 0; | |
1168 | bond_select_active_slave(bond); | |
1169 | } else { | |
1170 | printk(KERN_INFO DRV_NAME | |
1171 | ": %s: Unable to set %.*s as active slave as it is not a slave.\n", | |
1172 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1173 | } | |
1174 | } | |
1175 | out: | |
1176 | write_unlock_bh(&bond->lock); | |
1177 | return count; | |
1178 | ||
1179 | } | |
1180 | static CLASS_DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, bonding_show_active_slave, bonding_store_active_slave); | |
1181 | ||
1182 | ||
1183 | /* | |
1184 | * Show link status of the bond interface. | |
1185 | */ | |
1186 | static ssize_t bonding_show_mii_status(struct class_device *cd, char *buf) | |
1187 | { | |
1188 | struct slave *curr; | |
1189 | struct bonding *bond = to_bond(cd); | |
1190 | ||
1191 | read_lock(&bond->curr_slave_lock); | |
1192 | curr = bond->curr_active_slave; | |
1193 | read_unlock(&bond->curr_slave_lock); | |
1194 | ||
1195 | return sprintf(buf, "%s\n", (curr) ? "up" : "down") + 1; | |
1196 | } | |
1197 | static CLASS_DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL); | |
1198 | ||
1199 | ||
1200 | /* | |
1201 | * Show current 802.3ad aggregator ID. | |
1202 | */ | |
1203 | static ssize_t bonding_show_ad_aggregator(struct class_device *cd, char *buf) | |
1204 | { | |
1205 | int count = 0; | |
1206 | struct bonding *bond = to_bond(cd); | |
1207 | ||
1208 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1209 | struct ad_info ad_info; | |
1210 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id) + 1; | |
1211 | } | |
1212 | else | |
1213 | count = sprintf(buf, "\n") + 1; | |
1214 | ||
1215 | return count; | |
1216 | } | |
1217 | static CLASS_DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL); | |
1218 | ||
1219 | ||
1220 | /* | |
1221 | * Show number of active 802.3ad ports. | |
1222 | */ | |
1223 | static ssize_t bonding_show_ad_num_ports(struct class_device *cd, char *buf) | |
1224 | { | |
1225 | int count = 0; | |
1226 | struct bonding *bond = to_bond(cd); | |
1227 | ||
1228 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1229 | struct ad_info ad_info; | |
1230 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports) + 1; | |
1231 | } | |
1232 | else | |
1233 | count = sprintf(buf, "\n") + 1; | |
1234 | ||
1235 | return count; | |
1236 | } | |
1237 | static CLASS_DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL); | |
1238 | ||
1239 | ||
1240 | /* | |
1241 | * Show current 802.3ad actor key. | |
1242 | */ | |
1243 | static ssize_t bonding_show_ad_actor_key(struct class_device *cd, char *buf) | |
1244 | { | |
1245 | int count = 0; | |
1246 | struct bonding *bond = to_bond(cd); | |
1247 | ||
1248 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1249 | struct ad_info ad_info; | |
1250 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key) + 1; | |
1251 | } | |
1252 | else | |
1253 | count = sprintf(buf, "\n") + 1; | |
1254 | ||
1255 | return count; | |
1256 | } | |
1257 | static CLASS_DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL); | |
1258 | ||
1259 | ||
1260 | /* | |
1261 | * Show current 802.3ad partner key. | |
1262 | */ | |
1263 | static ssize_t bonding_show_ad_partner_key(struct class_device *cd, char *buf) | |
1264 | { | |
1265 | int count = 0; | |
1266 | struct bonding *bond = to_bond(cd); | |
1267 | ||
1268 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1269 | struct ad_info ad_info; | |
1270 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key) + 1; | |
1271 | } | |
1272 | else | |
1273 | count = sprintf(buf, "\n") + 1; | |
1274 | ||
1275 | return count; | |
1276 | } | |
1277 | static CLASS_DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL); | |
1278 | ||
1279 | ||
1280 | /* | |
1281 | * Show current 802.3ad partner mac. | |
1282 | */ | |
1283 | static ssize_t bonding_show_ad_partner_mac(struct class_device *cd, char *buf) | |
1284 | { | |
1285 | int count = 0; | |
1286 | struct bonding *bond = to_bond(cd); | |
1287 | ||
1288 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1289 | struct ad_info ad_info; | |
1290 | if (!bond_3ad_get_active_agg_info(bond, &ad_info)) { | |
1291 | count = sprintf(buf,"%02x:%02x:%02x:%02x:%02x:%02x\n", | |
1292 | ad_info.partner_system[0], | |
1293 | ad_info.partner_system[1], | |
1294 | ad_info.partner_system[2], | |
1295 | ad_info.partner_system[3], | |
1296 | ad_info.partner_system[4], | |
1297 | ad_info.partner_system[5]) + 1; | |
1298 | } | |
1299 | } | |
1300 | else | |
1301 | count = sprintf(buf, "\n") + 1; | |
1302 | ||
1303 | return count; | |
1304 | } | |
1305 | static CLASS_DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL); | |
1306 | ||
1307 | ||
1308 | ||
1309 | static struct attribute *per_bond_attrs[] = { | |
1310 | &class_device_attr_slaves.attr, | |
1311 | &class_device_attr_mode.attr, | |
1312 | &class_device_attr_arp_interval.attr, | |
1313 | &class_device_attr_arp_ip_target.attr, | |
1314 | &class_device_attr_downdelay.attr, | |
1315 | &class_device_attr_updelay.attr, | |
1316 | &class_device_attr_lacp_rate.attr, | |
1317 | &class_device_attr_xmit_hash_policy.attr, | |
1318 | &class_device_attr_miimon.attr, | |
1319 | &class_device_attr_primary.attr, | |
1320 | &class_device_attr_use_carrier.attr, | |
1321 | &class_device_attr_active_slave.attr, | |
1322 | &class_device_attr_mii_status.attr, | |
1323 | &class_device_attr_ad_aggregator.attr, | |
1324 | &class_device_attr_ad_num_ports.attr, | |
1325 | &class_device_attr_ad_actor_key.attr, | |
1326 | &class_device_attr_ad_partner_key.attr, | |
1327 | &class_device_attr_ad_partner_mac.attr, | |
1328 | NULL, | |
1329 | }; | |
1330 | ||
1331 | static struct attribute_group bonding_group = { | |
1332 | .name = "bonding", | |
1333 | .attrs = per_bond_attrs, | |
1334 | }; | |
1335 | ||
1336 | /* | |
1337 | * Initialize sysfs. This sets up the bonding_masters file in | |
1338 | * /sys/class/net. | |
1339 | */ | |
1340 | int bond_create_sysfs(void) | |
1341 | { | |
1342 | int ret = 0; | |
1343 | struct bonding *firstbond; | |
1344 | ||
1345 | init_rwsem(&bonding_rwsem); | |
1346 | ||
1347 | /* get the netdev class pointer */ | |
1348 | firstbond = container_of(bond_dev_list.next, struct bonding, bond_list); | |
1349 | if (!firstbond) | |
1350 | return -ENODEV; | |
1351 | ||
1352 | netdev_class = firstbond->dev->class_dev.class; | |
1353 | if (!netdev_class) | |
1354 | return -ENODEV; | |
1355 | ||
1356 | ret = class_create_file(netdev_class, &class_attr_bonding_masters); | |
1357 | ||
1358 | return ret; | |
1359 | ||
1360 | } | |
1361 | ||
1362 | /* | |
1363 | * Remove /sys/class/net/bonding_masters. | |
1364 | */ | |
1365 | void bond_destroy_sysfs(void) | |
1366 | { | |
1367 | if (netdev_class) | |
1368 | class_remove_file(netdev_class, &class_attr_bonding_masters); | |
1369 | } | |
1370 | ||
1371 | /* | |
1372 | * Initialize sysfs for each bond. This sets up and registers | |
1373 | * the 'bondctl' directory for each individual bond under /sys/class/net. | |
1374 | */ | |
1375 | int bond_create_sysfs_entry(struct bonding *bond) | |
1376 | { | |
1377 | struct net_device *dev = bond->dev; | |
1378 | int err; | |
1379 | ||
1380 | err = sysfs_create_group(&(dev->class_dev.kobj), &bonding_group); | |
1381 | if (err) { | |
1382 | printk(KERN_EMERG "eek! didn't create group!\n"); | |
1383 | } | |
1384 | ||
1385 | if (expected_refcount < 1) | |
1386 | expected_refcount = atomic_read(&bond->dev->class_dev.kobj.kref.refcount); | |
1387 | ||
1388 | return err; | |
1389 | } | |
1390 | /* | |
1391 | * Remove sysfs entries for each bond. | |
1392 | */ | |
1393 | void bond_destroy_sysfs_entry(struct bonding *bond) | |
1394 | { | |
1395 | struct net_device *dev = bond->dev; | |
1396 | ||
1397 | sysfs_remove_group(&(dev->class_dev.kobj), &bonding_group); | |
1398 | } | |
1399 |