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b76cdba9 MW |
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 | * | |
b76cdba9 | 22 | */ |
b76cdba9 MW |
23 | #include <linux/kernel.h> |
24 | #include <linux/module.h> | |
b76cdba9 MW |
25 | #include <linux/device.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> | |
b76cdba9 MW |
34 | #include <linux/ctype.h> |
35 | #include <linux/inet.h> | |
36 | #include <linux/rtnetlink.h> | |
881d966b | 37 | #include <net/net_namespace.h> |
b76cdba9 MW |
38 | |
39 | /* #define BONDING_DEBUG 1 */ | |
40 | #include "bonding.h" | |
43cb76d9 | 41 | #define to_dev(obj) container_of(obj,struct device,kobj) |
b76cdba9 MW |
42 | #define to_bond(cd) ((struct bonding *)(to_net_dev(cd)->priv)) |
43 | ||
44 | /*---------------------------- Declarations -------------------------------*/ | |
45 | ||
46 | ||
47 | extern struct list_head bond_dev_list; | |
48 | extern struct bond_params bonding_defaults; | |
49 | extern struct bond_parm_tbl bond_mode_tbl[]; | |
50 | extern struct bond_parm_tbl bond_lacp_tbl[]; | |
51 | extern struct bond_parm_tbl xmit_hashtype_tbl[]; | |
f5b2b966 | 52 | extern struct bond_parm_tbl arp_validate_tbl[]; |
b76cdba9 MW |
53 | |
54 | static int expected_refcount = -1; | |
55 | static struct class *netdev_class; | |
56 | /*--------------------------- Data Structures -----------------------------*/ | |
57 | ||
58 | /* Bonding sysfs lock. Why can't we just use the subsytem lock? | |
59 | * Because kobject_register tries to acquire the subsystem lock. If | |
60 | * we already hold the lock (which we would if the user was creating | |
61 | * a new bond through the sysfs interface), we deadlock. | |
62 | * This lock is only needed when deleting a bond - we need to make sure | |
63 | * that we don't collide with an ongoing ioctl. | |
64 | */ | |
65 | ||
66 | struct rw_semaphore bonding_rwsem; | |
67 | ||
68 | ||
69 | ||
70 | ||
71 | /*------------------------------ Functions --------------------------------*/ | |
72 | ||
73 | /* | |
74 | * "show" function for the bond_masters attribute. | |
75 | * The class parameter is ignored. | |
76 | */ | |
77 | static ssize_t bonding_show_bonds(struct class *cls, char *buffer) | |
78 | { | |
79 | int res = 0; | |
80 | struct bonding *bond; | |
81 | ||
82 | down_read(&(bonding_rwsem)); | |
83 | ||
84 | list_for_each_entry(bond, &bond_dev_list, bond_list) { | |
85 | if (res > (PAGE_SIZE - IFNAMSIZ)) { | |
86 | /* not enough space for another interface name */ | |
87 | if ((PAGE_SIZE - res) > 10) | |
88 | res = PAGE_SIZE - 10; | |
89 | res += sprintf(buffer + res, "++more++"); | |
90 | break; | |
91 | } | |
92 | res += sprintf(buffer + res, "%s ", | |
93 | bond->dev->name); | |
94 | } | |
95 | res += sprintf(buffer + res, "\n"); | |
96 | res++; | |
97 | up_read(&(bonding_rwsem)); | |
98 | return res; | |
99 | } | |
100 | ||
101 | /* | |
102 | * "store" function for the bond_masters attribute. This is what | |
103 | * creates and deletes entire bonds. | |
104 | * | |
105 | * The class parameter is ignored. | |
106 | * | |
107 | */ | |
108 | ||
109 | static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t count) | |
110 | { | |
111 | char command[IFNAMSIZ + 1] = {0, }; | |
112 | char *ifname; | |
113 | int res = count; | |
114 | struct bonding *bond; | |
115 | struct bonding *nxt; | |
116 | ||
117 | down_write(&(bonding_rwsem)); | |
118 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ | |
119 | ifname = command + 1; | |
120 | if ((strlen(command) <= 1) || | |
121 | !dev_valid_name(ifname)) | |
122 | goto err_no_cmd; | |
123 | ||
124 | if (command[0] == '+') { | |
125 | ||
126 | /* Check to see if the bond already exists. */ | |
127 | list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) | |
128 | if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { | |
129 | printk(KERN_ERR DRV_NAME | |
130 | ": cannot add bond %s; it already exists\n", | |
131 | ifname); | |
132 | res = -EPERM; | |
133 | goto out; | |
134 | } | |
135 | ||
136 | printk(KERN_INFO DRV_NAME | |
137 | ": %s is being created...\n", ifname); | |
138 | if (bond_create(ifname, &bonding_defaults, &bond)) { | |
139 | printk(KERN_INFO DRV_NAME | |
140 | ": %s interface already exists. Bond creation failed.\n", | |
141 | ifname); | |
142 | res = -EPERM; | |
143 | } | |
144 | goto out; | |
145 | } | |
146 | ||
147 | if (command[0] == '-') { | |
148 | list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) | |
149 | if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { | |
150 | rtnl_lock(); | |
151 | /* check the ref count on the bond's kobject. | |
152 | * If it's > expected, then there's a file open, | |
153 | * and we have to fail. | |
154 | */ | |
43cb76d9 | 155 | if (atomic_read(&bond->dev->dev.kobj.kref.refcount) |
b76cdba9 MW |
156 | > expected_refcount){ |
157 | rtnl_unlock(); | |
158 | printk(KERN_INFO DRV_NAME | |
159 | ": Unable remove bond %s due to open references.\n", | |
160 | ifname); | |
161 | res = -EPERM; | |
162 | goto out; | |
163 | } | |
164 | printk(KERN_INFO DRV_NAME | |
165 | ": %s is being deleted...\n", | |
166 | bond->dev->name); | |
b76cdba9 MW |
167 | bond_deinit(bond->dev); |
168 | bond_destroy_sysfs_entry(bond); | |
3201e656 | 169 | unregister_netdevice(bond->dev); |
b76cdba9 MW |
170 | rtnl_unlock(); |
171 | goto out; | |
172 | } | |
173 | ||
174 | printk(KERN_ERR DRV_NAME | |
175 | ": unable to delete non-existent bond %s\n", ifname); | |
176 | res = -ENODEV; | |
177 | goto out; | |
178 | } | |
179 | ||
180 | err_no_cmd: | |
181 | printk(KERN_ERR DRV_NAME | |
182 | ": no command found in bonding_masters. Use +ifname or -ifname.\n"); | |
183 | res = -EPERM; | |
184 | ||
185 | /* Always return either count or an error. If you return 0, you'll | |
186 | * get called forever, which is bad. | |
187 | */ | |
188 | out: | |
189 | up_write(&(bonding_rwsem)); | |
190 | return res; | |
191 | } | |
192 | /* class attribute for bond_masters file. This ends up in /sys/class/net */ | |
193 | static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO, | |
194 | bonding_show_bonds, bonding_store_bonds); | |
195 | ||
196 | int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave) | |
197 | { | |
198 | char linkname[IFNAMSIZ+7]; | |
199 | int ret = 0; | |
200 | ||
201 | /* first, create a link from the slave back to the master */ | |
43cb76d9 | 202 | ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj), |
b76cdba9 MW |
203 | "master"); |
204 | if (ret) | |
205 | return ret; | |
206 | /* next, create a link from the master to the slave */ | |
207 | sprintf(linkname,"slave_%s",slave->name); | |
43cb76d9 | 208 | ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj), |
b76cdba9 MW |
209 | linkname); |
210 | return ret; | |
211 | ||
212 | } | |
213 | ||
214 | void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave) | |
215 | { | |
216 | char linkname[IFNAMSIZ+7]; | |
217 | ||
43cb76d9 | 218 | sysfs_remove_link(&(slave->dev.kobj), "master"); |
b76cdba9 | 219 | sprintf(linkname,"slave_%s",slave->name); |
43cb76d9 | 220 | sysfs_remove_link(&(master->dev.kobj), linkname); |
b76cdba9 MW |
221 | } |
222 | ||
223 | ||
224 | /* | |
225 | * Show the slaves in the current bond. | |
226 | */ | |
43cb76d9 GKH |
227 | static ssize_t bonding_show_slaves(struct device *d, |
228 | struct device_attribute *attr, char *buf) | |
b76cdba9 MW |
229 | { |
230 | struct slave *slave; | |
231 | int i, res = 0; | |
43cb76d9 | 232 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
233 | |
234 | read_lock_bh(&bond->lock); | |
235 | bond_for_each_slave(bond, slave, i) { | |
236 | if (res > (PAGE_SIZE - IFNAMSIZ)) { | |
237 | /* not enough space for another interface name */ | |
238 | if ((PAGE_SIZE - res) > 10) | |
239 | res = PAGE_SIZE - 10; | |
240 | res += sprintf(buf + res, "++more++"); | |
241 | break; | |
242 | } | |
243 | res += sprintf(buf + res, "%s ", slave->dev->name); | |
244 | } | |
245 | read_unlock_bh(&bond->lock); | |
246 | res += sprintf(buf + res, "\n"); | |
247 | res++; | |
248 | return res; | |
249 | } | |
250 | ||
251 | /* | |
252 | * Set the slaves in the current bond. The bond interface must be | |
253 | * up for this to succeed. | |
254 | * This function is largely the same flow as bonding_update_bonds(). | |
255 | */ | |
43cb76d9 GKH |
256 | static ssize_t bonding_store_slaves(struct device *d, |
257 | struct device_attribute *attr, | |
258 | const char *buffer, size_t count) | |
b76cdba9 MW |
259 | { |
260 | char command[IFNAMSIZ + 1] = { 0, }; | |
261 | char *ifname; | |
262 | int i, res, found, ret = count; | |
263 | struct slave *slave; | |
3418db7c | 264 | struct net_device *dev = NULL; |
43cb76d9 | 265 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
266 | |
267 | /* Quick sanity check -- is the bond interface up? */ | |
268 | if (!(bond->dev->flags & IFF_UP)) { | |
269 | printk(KERN_ERR DRV_NAME | |
270 | ": %s: Unable to update slaves because interface is down.\n", | |
271 | bond->dev->name); | |
272 | ret = -EPERM; | |
273 | goto out; | |
274 | } | |
275 | ||
276 | /* Note: We can't hold bond->lock here, as bond_create grabs it. */ | |
277 | ||
278 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ | |
279 | ifname = command + 1; | |
280 | if ((strlen(command) <= 1) || | |
281 | !dev_valid_name(ifname)) | |
282 | goto err_no_cmd; | |
283 | ||
284 | if (command[0] == '+') { | |
285 | ||
286 | /* Got a slave name in ifname. Is it already in the list? */ | |
287 | found = 0; | |
288 | read_lock_bh(&bond->lock); | |
289 | bond_for_each_slave(bond, slave, i) | |
290 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
291 | printk(KERN_ERR DRV_NAME | |
292 | ": %s: Interface %s is already enslaved!\n", | |
293 | bond->dev->name, ifname); | |
294 | ret = -EPERM; | |
295 | read_unlock_bh(&bond->lock); | |
296 | goto out; | |
297 | } | |
298 | ||
299 | read_unlock_bh(&bond->lock); | |
300 | printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n", | |
301 | bond->dev->name, ifname); | |
881d966b | 302 | dev = dev_get_by_name(&init_net, ifname); |
b76cdba9 MW |
303 | if (!dev) { |
304 | printk(KERN_INFO DRV_NAME | |
305 | ": %s: Interface %s does not exist!\n", | |
306 | bond->dev->name, ifname); | |
307 | ret = -EPERM; | |
308 | goto out; | |
309 | } | |
310 | else | |
311 | dev_put(dev); | |
312 | ||
313 | if (dev->flags & IFF_UP) { | |
314 | printk(KERN_ERR DRV_NAME | |
315 | ": %s: Error: Unable to enslave %s " | |
316 | "because it is already up.\n", | |
317 | bond->dev->name, dev->name); | |
318 | ret = -EPERM; | |
319 | goto out; | |
320 | } | |
321 | /* If this is the first slave, then we need to set | |
322 | the master's hardware address to be the same as the | |
323 | slave's. */ | |
324 | if (!(*((u32 *) & (bond->dev->dev_addr[0])))) { | |
325 | memcpy(bond->dev->dev_addr, dev->dev_addr, | |
326 | dev->addr_len); | |
327 | } | |
328 | ||
329 | /* Set the slave's MTU to match the bond */ | |
330 | if (dev->mtu != bond->dev->mtu) { | |
331 | if (dev->change_mtu) { | |
332 | res = dev->change_mtu(dev, | |
333 | bond->dev->mtu); | |
334 | if (res) { | |
335 | ret = res; | |
336 | goto out; | |
337 | } | |
338 | } else { | |
339 | dev->mtu = bond->dev->mtu; | |
340 | } | |
341 | } | |
342 | rtnl_lock(); | |
343 | res = bond_enslave(bond->dev, dev); | |
344 | rtnl_unlock(); | |
345 | if (res) { | |
346 | ret = res; | |
347 | } | |
348 | goto out; | |
349 | } | |
350 | ||
351 | if (command[0] == '-') { | |
352 | dev = NULL; | |
353 | bond_for_each_slave(bond, slave, i) | |
354 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
355 | dev = slave->dev; | |
356 | break; | |
357 | } | |
358 | if (dev) { | |
359 | printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n", | |
360 | bond->dev->name, dev->name); | |
361 | rtnl_lock(); | |
362 | res = bond_release(bond->dev, dev); | |
363 | rtnl_unlock(); | |
364 | if (res) { | |
365 | ret = res; | |
366 | goto out; | |
367 | } | |
368 | /* set the slave MTU to the default */ | |
369 | if (dev->change_mtu) { | |
370 | dev->change_mtu(dev, 1500); | |
371 | } else { | |
372 | dev->mtu = 1500; | |
373 | } | |
374 | } | |
375 | else { | |
376 | printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n", | |
377 | ifname, bond->dev->name); | |
378 | ret = -ENODEV; | |
379 | } | |
380 | goto out; | |
381 | } | |
382 | ||
383 | err_no_cmd: | |
384 | printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name); | |
385 | ret = -EPERM; | |
386 | ||
387 | out: | |
388 | return ret; | |
389 | } | |
390 | ||
43cb76d9 | 391 | static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves); |
b76cdba9 MW |
392 | |
393 | /* | |
394 | * Show and set the bonding mode. The bond interface must be down to | |
395 | * change the mode. | |
396 | */ | |
43cb76d9 GKH |
397 | static ssize_t bonding_show_mode(struct device *d, |
398 | struct device_attribute *attr, char *buf) | |
b76cdba9 | 399 | { |
43cb76d9 | 400 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
401 | |
402 | return sprintf(buf, "%s %d\n", | |
403 | bond_mode_tbl[bond->params.mode].modename, | |
404 | bond->params.mode) + 1; | |
405 | } | |
406 | ||
43cb76d9 GKH |
407 | static ssize_t bonding_store_mode(struct device *d, |
408 | struct device_attribute *attr, | |
409 | const char *buf, size_t count) | |
b76cdba9 MW |
410 | { |
411 | int new_value, ret = count; | |
43cb76d9 | 412 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
413 | |
414 | if (bond->dev->flags & IFF_UP) { | |
415 | printk(KERN_ERR DRV_NAME | |
416 | ": unable to update mode of %s because interface is up.\n", | |
417 | bond->dev->name); | |
418 | ret = -EPERM; | |
419 | goto out; | |
420 | } | |
421 | ||
422 | new_value = bond_parse_parm((char *)buf, bond_mode_tbl); | |
423 | if (new_value < 0) { | |
424 | printk(KERN_ERR DRV_NAME | |
425 | ": %s: Ignoring invalid mode value %.*s.\n", | |
426 | bond->dev->name, | |
427 | (int)strlen(buf) - 1, buf); | |
428 | ret = -EINVAL; | |
429 | goto out; | |
430 | } else { | |
8f903c70 JV |
431 | if (bond->params.mode == BOND_MODE_8023AD) |
432 | bond_unset_master_3ad_flags(bond); | |
433 | ||
434 | if (bond->params.mode == BOND_MODE_ALB) | |
435 | bond_unset_master_alb_flags(bond); | |
436 | ||
b76cdba9 MW |
437 | bond->params.mode = new_value; |
438 | bond_set_mode_ops(bond, bond->params.mode); | |
439 | printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n", | |
440 | bond->dev->name, bond_mode_tbl[new_value].modename, new_value); | |
441 | } | |
442 | out: | |
443 | return ret; | |
444 | } | |
43cb76d9 | 445 | static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode); |
b76cdba9 MW |
446 | |
447 | /* | |
448 | * Show and set the bonding transmit hash method. The bond interface must be down to | |
449 | * change the xmit hash policy. | |
450 | */ | |
43cb76d9 GKH |
451 | static ssize_t bonding_show_xmit_hash(struct device *d, |
452 | struct device_attribute *attr, | |
453 | char *buf) | |
b76cdba9 MW |
454 | { |
455 | int count; | |
43cb76d9 | 456 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
457 | |
458 | if ((bond->params.mode != BOND_MODE_XOR) && | |
459 | (bond->params.mode != BOND_MODE_8023AD)) { | |
460 | // Not Applicable | |
461 | count = sprintf(buf, "NA\n") + 1; | |
462 | } else { | |
463 | count = sprintf(buf, "%s %d\n", | |
464 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
465 | bond->params.xmit_policy) + 1; | |
466 | } | |
467 | ||
468 | return count; | |
469 | } | |
470 | ||
43cb76d9 GKH |
471 | static ssize_t bonding_store_xmit_hash(struct device *d, |
472 | struct device_attribute *attr, | |
473 | const char *buf, size_t count) | |
b76cdba9 MW |
474 | { |
475 | int new_value, ret = count; | |
43cb76d9 | 476 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
477 | |
478 | if (bond->dev->flags & IFF_UP) { | |
479 | printk(KERN_ERR DRV_NAME | |
480 | "%s: Interface is up. Unable to update xmit policy.\n", | |
481 | bond->dev->name); | |
482 | ret = -EPERM; | |
483 | goto out; | |
484 | } | |
485 | ||
486 | if ((bond->params.mode != BOND_MODE_XOR) && | |
487 | (bond->params.mode != BOND_MODE_8023AD)) { | |
488 | printk(KERN_ERR DRV_NAME | |
489 | "%s: Transmit hash policy is irrelevant in this mode.\n", | |
490 | bond->dev->name); | |
491 | ret = -EPERM; | |
492 | goto out; | |
493 | } | |
494 | ||
495 | new_value = bond_parse_parm((char *)buf, xmit_hashtype_tbl); | |
496 | if (new_value < 0) { | |
497 | printk(KERN_ERR DRV_NAME | |
498 | ": %s: Ignoring invalid xmit hash policy value %.*s.\n", | |
499 | bond->dev->name, | |
500 | (int)strlen(buf) - 1, buf); | |
501 | ret = -EINVAL; | |
502 | goto out; | |
503 | } else { | |
504 | bond->params.xmit_policy = new_value; | |
505 | bond_set_mode_ops(bond, bond->params.mode); | |
506 | printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n", | |
507 | bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value); | |
508 | } | |
509 | out: | |
510 | return ret; | |
511 | } | |
43cb76d9 | 512 | static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash); |
b76cdba9 | 513 | |
f5b2b966 JV |
514 | /* |
515 | * Show and set arp_validate. | |
516 | */ | |
43cb76d9 GKH |
517 | static ssize_t bonding_show_arp_validate(struct device *d, |
518 | struct device_attribute *attr, | |
519 | char *buf) | |
f5b2b966 | 520 | { |
43cb76d9 | 521 | struct bonding *bond = to_bond(d); |
f5b2b966 JV |
522 | |
523 | return sprintf(buf, "%s %d\n", | |
524 | arp_validate_tbl[bond->params.arp_validate].modename, | |
525 | bond->params.arp_validate) + 1; | |
526 | } | |
527 | ||
43cb76d9 GKH |
528 | static ssize_t bonding_store_arp_validate(struct device *d, |
529 | struct device_attribute *attr, | |
530 | const char *buf, size_t count) | |
f5b2b966 JV |
531 | { |
532 | int new_value; | |
43cb76d9 | 533 | struct bonding *bond = to_bond(d); |
f5b2b966 JV |
534 | |
535 | new_value = bond_parse_parm((char *)buf, arp_validate_tbl); | |
536 | if (new_value < 0) { | |
537 | printk(KERN_ERR DRV_NAME | |
538 | ": %s: Ignoring invalid arp_validate value %s\n", | |
539 | bond->dev->name, buf); | |
540 | return -EINVAL; | |
541 | } | |
542 | if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { | |
543 | printk(KERN_ERR DRV_NAME | |
544 | ": %s: arp_validate only supported in active-backup mode.\n", | |
545 | bond->dev->name); | |
546 | return -EINVAL; | |
547 | } | |
548 | printk(KERN_INFO DRV_NAME ": %s: setting arp_validate to %s (%d).\n", | |
549 | bond->dev->name, arp_validate_tbl[new_value].modename, | |
550 | new_value); | |
551 | ||
552 | if (!bond->params.arp_validate && new_value) { | |
553 | bond_register_arp(bond); | |
554 | } else if (bond->params.arp_validate && !new_value) { | |
555 | bond_unregister_arp(bond); | |
556 | } | |
557 | ||
558 | bond->params.arp_validate = new_value; | |
559 | ||
560 | return count; | |
561 | } | |
562 | ||
43cb76d9 | 563 | static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate, bonding_store_arp_validate); |
f5b2b966 | 564 | |
b76cdba9 MW |
565 | /* |
566 | * Show and set the arp timer interval. There are two tricky bits | |
567 | * here. First, if ARP monitoring is activated, then we must disable | |
568 | * MII monitoring. Second, if the ARP timer isn't running, we must | |
569 | * start it. | |
570 | */ | |
43cb76d9 GKH |
571 | static ssize_t bonding_show_arp_interval(struct device *d, |
572 | struct device_attribute *attr, | |
573 | char *buf) | |
b76cdba9 | 574 | { |
43cb76d9 | 575 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
576 | |
577 | return sprintf(buf, "%d\n", bond->params.arp_interval) + 1; | |
578 | } | |
579 | ||
43cb76d9 GKH |
580 | static ssize_t bonding_store_arp_interval(struct device *d, |
581 | struct device_attribute *attr, | |
582 | const char *buf, size_t count) | |
b76cdba9 MW |
583 | { |
584 | int new_value, ret = count; | |
43cb76d9 | 585 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
586 | |
587 | if (sscanf(buf, "%d", &new_value) != 1) { | |
588 | printk(KERN_ERR DRV_NAME | |
589 | ": %s: no arp_interval value specified.\n", | |
590 | bond->dev->name); | |
591 | ret = -EINVAL; | |
592 | goto out; | |
593 | } | |
594 | if (new_value < 0) { | |
595 | printk(KERN_ERR DRV_NAME | |
596 | ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n", | |
597 | bond->dev->name, new_value, INT_MAX); | |
598 | ret = -EINVAL; | |
599 | goto out; | |
600 | } | |
601 | ||
602 | printk(KERN_INFO DRV_NAME | |
603 | ": %s: Setting ARP monitoring interval to %d.\n", | |
604 | bond->dev->name, new_value); | |
605 | bond->params.arp_interval = new_value; | |
606 | if (bond->params.miimon) { | |
607 | printk(KERN_INFO DRV_NAME | |
608 | ": %s: ARP monitoring cannot be used with MII monitoring. " | |
609 | "%s Disabling MII monitoring.\n", | |
610 | bond->dev->name, bond->dev->name); | |
611 | bond->params.miimon = 0; | |
612 | /* Kill MII timer, else it brings bond's link down */ | |
613 | if (bond->arp_timer.function) { | |
614 | printk(KERN_INFO DRV_NAME | |
615 | ": %s: Kill MII timer, else it brings bond's link down...\n", | |
616 | bond->dev->name); | |
617 | del_timer_sync(&bond->mii_timer); | |
618 | } | |
619 | } | |
620 | if (!bond->params.arp_targets[0]) { | |
621 | printk(KERN_INFO DRV_NAME | |
622 | ": %s: ARP monitoring has been set up, " | |
623 | "but no ARP targets have been specified.\n", | |
624 | bond->dev->name); | |
625 | } | |
626 | if (bond->dev->flags & IFF_UP) { | |
627 | /* If the interface is up, we may need to fire off | |
628 | * the ARP timer. If the interface is down, the | |
629 | * timer will get fired off when the open function | |
630 | * is called. | |
631 | */ | |
632 | if (bond->arp_timer.function) { | |
633 | /* The timer's already set up, so fire it off */ | |
634 | mod_timer(&bond->arp_timer, jiffies + 1); | |
635 | } else { | |
636 | /* Set up the timer. */ | |
637 | init_timer(&bond->arp_timer); | |
638 | bond->arp_timer.expires = jiffies + 1; | |
639 | bond->arp_timer.data = | |
640 | (unsigned long) bond->dev; | |
641 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { | |
642 | bond->arp_timer.function = | |
643 | (void *) | |
644 | &bond_activebackup_arp_mon; | |
645 | } else { | |
646 | bond->arp_timer.function = | |
647 | (void *) | |
648 | &bond_loadbalance_arp_mon; | |
649 | } | |
650 | add_timer(&bond->arp_timer); | |
651 | } | |
652 | } | |
653 | ||
654 | out: | |
655 | return ret; | |
656 | } | |
43cb76d9 | 657 | static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR , bonding_show_arp_interval, bonding_store_arp_interval); |
b76cdba9 MW |
658 | |
659 | /* | |
660 | * Show and set the arp targets. | |
661 | */ | |
43cb76d9 GKH |
662 | static ssize_t bonding_show_arp_targets(struct device *d, |
663 | struct device_attribute *attr, | |
664 | char *buf) | |
b76cdba9 MW |
665 | { |
666 | int i, res = 0; | |
43cb76d9 | 667 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
668 | |
669 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { | |
670 | if (bond->params.arp_targets[i]) | |
671 | res += sprintf(buf + res, "%u.%u.%u.%u ", | |
672 | NIPQUAD(bond->params.arp_targets[i])); | |
673 | } | |
674 | if (res) | |
675 | res--; /* eat the leftover space */ | |
676 | res += sprintf(buf + res, "\n"); | |
677 | res++; | |
678 | return res; | |
679 | } | |
680 | ||
43cb76d9 GKH |
681 | static ssize_t bonding_store_arp_targets(struct device *d, |
682 | struct device_attribute *attr, | |
683 | const char *buf, size_t count) | |
b76cdba9 | 684 | { |
d3bb52b0 | 685 | __be32 newtarget; |
b76cdba9 | 686 | int i = 0, done = 0, ret = count; |
43cb76d9 | 687 | struct bonding *bond = to_bond(d); |
d3bb52b0 | 688 | __be32 *targets; |
b76cdba9 MW |
689 | |
690 | targets = bond->params.arp_targets; | |
691 | newtarget = in_aton(buf + 1); | |
692 | /* look for adds */ | |
693 | if (buf[0] == '+') { | |
d3bb52b0 | 694 | if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) { |
b76cdba9 MW |
695 | printk(KERN_ERR DRV_NAME |
696 | ": %s: invalid ARP target %u.%u.%u.%u specified for addition\n", | |
697 | bond->dev->name, NIPQUAD(newtarget)); | |
698 | ret = -EINVAL; | |
699 | goto out; | |
700 | } | |
701 | /* look for an empty slot to put the target in, and check for dupes */ | |
702 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
703 | if (targets[i] == newtarget) { /* duplicate */ | |
704 | printk(KERN_ERR DRV_NAME | |
705 | ": %s: ARP target %u.%u.%u.%u is already present\n", | |
706 | bond->dev->name, NIPQUAD(newtarget)); | |
707 | if (done) | |
708 | targets[i] = 0; | |
709 | ret = -EINVAL; | |
710 | goto out; | |
711 | } | |
712 | if (targets[i] == 0 && !done) { | |
713 | printk(KERN_INFO DRV_NAME | |
714 | ": %s: adding ARP target %d.%d.%d.%d.\n", | |
715 | bond->dev->name, NIPQUAD(newtarget)); | |
716 | done = 1; | |
717 | targets[i] = newtarget; | |
718 | } | |
719 | } | |
720 | if (!done) { | |
721 | printk(KERN_ERR DRV_NAME | |
722 | ": %s: ARP target table is full!\n", | |
723 | bond->dev->name); | |
724 | ret = -EINVAL; | |
725 | goto out; | |
726 | } | |
727 | ||
728 | } | |
729 | else if (buf[0] == '-') { | |
d3bb52b0 | 730 | if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) { |
b76cdba9 MW |
731 | printk(KERN_ERR DRV_NAME |
732 | ": %s: invalid ARP target %d.%d.%d.%d specified for removal\n", | |
733 | bond->dev->name, NIPQUAD(newtarget)); | |
734 | ret = -EINVAL; | |
735 | goto out; | |
736 | } | |
737 | ||
738 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
739 | if (targets[i] == newtarget) { | |
740 | printk(KERN_INFO DRV_NAME | |
741 | ": %s: removing ARP target %d.%d.%d.%d.\n", | |
742 | bond->dev->name, NIPQUAD(newtarget)); | |
743 | targets[i] = 0; | |
744 | done = 1; | |
745 | } | |
746 | } | |
747 | if (!done) { | |
748 | printk(KERN_INFO DRV_NAME | |
749 | ": %s: unable to remove nonexistent ARP target %d.%d.%d.%d.\n", | |
750 | bond->dev->name, NIPQUAD(newtarget)); | |
751 | ret = -EINVAL; | |
752 | goto out; | |
753 | } | |
754 | } | |
755 | else { | |
756 | printk(KERN_ERR DRV_NAME ": no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n", | |
757 | bond->dev->name); | |
758 | ret = -EPERM; | |
759 | goto out; | |
760 | } | |
761 | ||
762 | out: | |
763 | return ret; | |
764 | } | |
43cb76d9 | 765 | static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets); |
b76cdba9 MW |
766 | |
767 | /* | |
768 | * Show and set the up and down delays. These must be multiples of the | |
769 | * MII monitoring value, and are stored internally as the multiplier. | |
770 | * Thus, we must translate to MS for the real world. | |
771 | */ | |
43cb76d9 GKH |
772 | static ssize_t bonding_show_downdelay(struct device *d, |
773 | struct device_attribute *attr, | |
774 | char *buf) | |
b76cdba9 | 775 | { |
43cb76d9 | 776 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
777 | |
778 | return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon) + 1; | |
779 | } | |
780 | ||
43cb76d9 GKH |
781 | static ssize_t bonding_store_downdelay(struct device *d, |
782 | struct device_attribute *attr, | |
783 | const char *buf, size_t count) | |
b76cdba9 MW |
784 | { |
785 | int new_value, ret = count; | |
43cb76d9 | 786 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
787 | |
788 | if (!(bond->params.miimon)) { | |
789 | printk(KERN_ERR DRV_NAME | |
790 | ": %s: Unable to set down delay as MII monitoring is disabled\n", | |
791 | bond->dev->name); | |
792 | ret = -EPERM; | |
793 | goto out; | |
794 | } | |
795 | ||
796 | if (sscanf(buf, "%d", &new_value) != 1) { | |
797 | printk(KERN_ERR DRV_NAME | |
798 | ": %s: no down delay value specified.\n", | |
799 | bond->dev->name); | |
800 | ret = -EINVAL; | |
801 | goto out; | |
802 | } | |
803 | if (new_value < 0) { | |
804 | printk(KERN_ERR DRV_NAME | |
805 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
806 | bond->dev->name, new_value, 1, INT_MAX); | |
807 | ret = -EINVAL; | |
808 | goto out; | |
809 | } else { | |
810 | if ((new_value % bond->params.miimon) != 0) { | |
811 | printk(KERN_WARNING DRV_NAME | |
812 | ": %s: Warning: down delay (%d) is not a multiple " | |
813 | "of miimon (%d), delay rounded to %d ms\n", | |
814 | bond->dev->name, new_value, bond->params.miimon, | |
815 | (new_value / bond->params.miimon) * | |
816 | bond->params.miimon); | |
817 | } | |
818 | bond->params.downdelay = new_value / bond->params.miimon; | |
819 | printk(KERN_INFO DRV_NAME ": %s: Setting down delay to %d.\n", | |
820 | bond->dev->name, bond->params.downdelay * bond->params.miimon); | |
821 | ||
822 | } | |
823 | ||
824 | out: | |
825 | return ret; | |
826 | } | |
43cb76d9 | 827 | static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay); |
b76cdba9 | 828 | |
43cb76d9 GKH |
829 | static ssize_t bonding_show_updelay(struct device *d, |
830 | struct device_attribute *attr, | |
831 | char *buf) | |
b76cdba9 | 832 | { |
43cb76d9 | 833 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
834 | |
835 | return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon) + 1; | |
836 | ||
837 | } | |
838 | ||
43cb76d9 GKH |
839 | static ssize_t bonding_store_updelay(struct device *d, |
840 | struct device_attribute *attr, | |
841 | const char *buf, size_t count) | |
b76cdba9 MW |
842 | { |
843 | int new_value, ret = count; | |
43cb76d9 | 844 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
845 | |
846 | if (!(bond->params.miimon)) { | |
847 | printk(KERN_ERR DRV_NAME | |
848 | ": %s: Unable to set up delay as MII monitoring is disabled\n", | |
849 | bond->dev->name); | |
850 | ret = -EPERM; | |
851 | goto out; | |
852 | } | |
853 | ||
854 | if (sscanf(buf, "%d", &new_value) != 1) { | |
855 | printk(KERN_ERR DRV_NAME | |
856 | ": %s: no up delay value specified.\n", | |
857 | bond->dev->name); | |
858 | ret = -EINVAL; | |
859 | goto out; | |
860 | } | |
861 | if (new_value < 0) { | |
862 | printk(KERN_ERR DRV_NAME | |
863 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
864 | bond->dev->name, new_value, 1, INT_MAX); | |
865 | ret = -EINVAL; | |
866 | goto out; | |
867 | } else { | |
868 | if ((new_value % bond->params.miimon) != 0) { | |
869 | printk(KERN_WARNING DRV_NAME | |
870 | ": %s: Warning: up delay (%d) is not a multiple " | |
871 | "of miimon (%d), updelay rounded to %d ms\n", | |
872 | bond->dev->name, new_value, bond->params.miimon, | |
873 | (new_value / bond->params.miimon) * | |
874 | bond->params.miimon); | |
875 | } | |
876 | bond->params.updelay = new_value / bond->params.miimon; | |
877 | printk(KERN_INFO DRV_NAME ": %s: Setting up delay to %d.\n", | |
878 | bond->dev->name, bond->params.updelay * bond->params.miimon); | |
879 | ||
880 | } | |
881 | ||
882 | out: | |
883 | return ret; | |
884 | } | |
43cb76d9 | 885 | static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR , bonding_show_updelay, bonding_store_updelay); |
b76cdba9 MW |
886 | |
887 | /* | |
888 | * Show and set the LACP interval. Interface must be down, and the mode | |
889 | * must be set to 802.3ad mode. | |
890 | */ | |
43cb76d9 GKH |
891 | static ssize_t bonding_show_lacp(struct device *d, |
892 | struct device_attribute *attr, | |
893 | char *buf) | |
b76cdba9 | 894 | { |
43cb76d9 | 895 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
896 | |
897 | return sprintf(buf, "%s %d\n", | |
898 | bond_lacp_tbl[bond->params.lacp_fast].modename, | |
899 | bond->params.lacp_fast) + 1; | |
900 | } | |
901 | ||
43cb76d9 GKH |
902 | static ssize_t bonding_store_lacp(struct device *d, |
903 | struct device_attribute *attr, | |
904 | const char *buf, size_t count) | |
b76cdba9 MW |
905 | { |
906 | int new_value, ret = count; | |
43cb76d9 | 907 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
908 | |
909 | if (bond->dev->flags & IFF_UP) { | |
910 | printk(KERN_ERR DRV_NAME | |
911 | ": %s: Unable to update LACP rate because interface is up.\n", | |
912 | bond->dev->name); | |
913 | ret = -EPERM; | |
914 | goto out; | |
915 | } | |
916 | ||
917 | if (bond->params.mode != BOND_MODE_8023AD) { | |
918 | printk(KERN_ERR DRV_NAME | |
919 | ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n", | |
920 | bond->dev->name); | |
921 | ret = -EPERM; | |
922 | goto out; | |
923 | } | |
924 | ||
925 | new_value = bond_parse_parm((char *)buf, bond_lacp_tbl); | |
926 | ||
927 | if ((new_value == 1) || (new_value == 0)) { | |
928 | bond->params.lacp_fast = new_value; | |
929 | printk(KERN_INFO DRV_NAME | |
930 | ": %s: Setting LACP rate to %s (%d).\n", | |
931 | bond->dev->name, bond_lacp_tbl[new_value].modename, new_value); | |
932 | } else { | |
933 | printk(KERN_ERR DRV_NAME | |
934 | ": %s: Ignoring invalid LACP rate value %.*s.\n", | |
935 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
936 | ret = -EINVAL; | |
937 | } | |
938 | out: | |
939 | return ret; | |
940 | } | |
43cb76d9 | 941 | static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp); |
b76cdba9 MW |
942 | |
943 | /* | |
944 | * Show and set the MII monitor interval. There are two tricky bits | |
945 | * here. First, if MII monitoring is activated, then we must disable | |
946 | * ARP monitoring. Second, if the timer isn't running, we must | |
947 | * start it. | |
948 | */ | |
43cb76d9 GKH |
949 | static ssize_t bonding_show_miimon(struct device *d, |
950 | struct device_attribute *attr, | |
951 | char *buf) | |
b76cdba9 | 952 | { |
43cb76d9 | 953 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
954 | |
955 | return sprintf(buf, "%d\n", bond->params.miimon) + 1; | |
956 | } | |
957 | ||
43cb76d9 GKH |
958 | static ssize_t bonding_store_miimon(struct device *d, |
959 | struct device_attribute *attr, | |
960 | const char *buf, size_t count) | |
b76cdba9 MW |
961 | { |
962 | int new_value, ret = count; | |
43cb76d9 | 963 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
964 | |
965 | if (sscanf(buf, "%d", &new_value) != 1) { | |
966 | printk(KERN_ERR DRV_NAME | |
967 | ": %s: no miimon value specified.\n", | |
968 | bond->dev->name); | |
969 | ret = -EINVAL; | |
970 | goto out; | |
971 | } | |
972 | if (new_value < 0) { | |
973 | printk(KERN_ERR DRV_NAME | |
974 | ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n", | |
975 | bond->dev->name, new_value, 1, INT_MAX); | |
976 | ret = -EINVAL; | |
977 | goto out; | |
978 | } else { | |
979 | printk(KERN_INFO DRV_NAME | |
980 | ": %s: Setting MII monitoring interval to %d.\n", | |
981 | bond->dev->name, new_value); | |
982 | bond->params.miimon = new_value; | |
983 | if(bond->params.updelay) | |
984 | printk(KERN_INFO DRV_NAME | |
985 | ": %s: Note: Updating updelay (to %d) " | |
986 | "since it is a multiple of the miimon value.\n", | |
987 | bond->dev->name, | |
988 | bond->params.updelay * bond->params.miimon); | |
989 | if(bond->params.downdelay) | |
990 | printk(KERN_INFO DRV_NAME | |
991 | ": %s: Note: Updating downdelay (to %d) " | |
992 | "since it is a multiple of the miimon value.\n", | |
993 | bond->dev->name, | |
994 | bond->params.downdelay * bond->params.miimon); | |
995 | if (bond->params.arp_interval) { | |
996 | printk(KERN_INFO DRV_NAME | |
997 | ": %s: MII monitoring cannot be used with " | |
998 | "ARP monitoring. Disabling ARP monitoring...\n", | |
999 | bond->dev->name); | |
1000 | bond->params.arp_interval = 0; | |
f5b2b966 JV |
1001 | if (bond->params.arp_validate) { |
1002 | bond_unregister_arp(bond); | |
1003 | bond->params.arp_validate = | |
1004 | BOND_ARP_VALIDATE_NONE; | |
1005 | } | |
b76cdba9 MW |
1006 | /* Kill ARP timer, else it brings bond's link down */ |
1007 | if (bond->mii_timer.function) { | |
1008 | printk(KERN_INFO DRV_NAME | |
1009 | ": %s: Kill ARP timer, else it brings bond's link down...\n", | |
1010 | bond->dev->name); | |
1011 | del_timer_sync(&bond->arp_timer); | |
1012 | } | |
1013 | } | |
1014 | ||
1015 | if (bond->dev->flags & IFF_UP) { | |
1016 | /* If the interface is up, we may need to fire off | |
1017 | * the MII timer. If the interface is down, the | |
1018 | * timer will get fired off when the open function | |
1019 | * is called. | |
1020 | */ | |
1021 | if (bond->mii_timer.function) { | |
1022 | /* The timer's already set up, so fire it off */ | |
1023 | mod_timer(&bond->mii_timer, jiffies + 1); | |
1024 | } else { | |
1025 | /* Set up the timer. */ | |
1026 | init_timer(&bond->mii_timer); | |
1027 | bond->mii_timer.expires = jiffies + 1; | |
1028 | bond->mii_timer.data = | |
1029 | (unsigned long) bond->dev; | |
1030 | bond->mii_timer.function = | |
1031 | (void *) &bond_mii_monitor; | |
1032 | add_timer(&bond->mii_timer); | |
1033 | } | |
1034 | } | |
1035 | } | |
1036 | out: | |
1037 | return ret; | |
1038 | } | |
43cb76d9 | 1039 | static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR, bonding_show_miimon, bonding_store_miimon); |
b76cdba9 MW |
1040 | |
1041 | /* | |
1042 | * Show and set the primary slave. The store function is much | |
1043 | * simpler than bonding_store_slaves function because it only needs to | |
1044 | * handle one interface name. | |
1045 | * The bond must be a mode that supports a primary for this be | |
1046 | * set. | |
1047 | */ | |
43cb76d9 GKH |
1048 | static ssize_t bonding_show_primary(struct device *d, |
1049 | struct device_attribute *attr, | |
1050 | char *buf) | |
b76cdba9 MW |
1051 | { |
1052 | int count = 0; | |
43cb76d9 | 1053 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1054 | |
1055 | if (bond->primary_slave) | |
1056 | count = sprintf(buf, "%s\n", bond->primary_slave->dev->name) + 1; | |
1057 | else | |
1058 | count = sprintf(buf, "\n") + 1; | |
1059 | ||
1060 | return count; | |
1061 | } | |
1062 | ||
43cb76d9 GKH |
1063 | static ssize_t bonding_store_primary(struct device *d, |
1064 | struct device_attribute *attr, | |
1065 | const char *buf, size_t count) | |
b76cdba9 MW |
1066 | { |
1067 | int i; | |
1068 | struct slave *slave; | |
43cb76d9 | 1069 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1070 | |
1071 | write_lock_bh(&bond->lock); | |
1072 | if (!USES_PRIMARY(bond->params.mode)) { | |
1073 | printk(KERN_INFO DRV_NAME | |
1074 | ": %s: Unable to set primary slave; %s is in mode %d\n", | |
1075 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1076 | } else { | |
1077 | bond_for_each_slave(bond, slave, i) { | |
1078 | if (strnicmp | |
1079 | (slave->dev->name, buf, | |
1080 | strlen(slave->dev->name)) == 0) { | |
1081 | printk(KERN_INFO DRV_NAME | |
1082 | ": %s: Setting %s as primary slave.\n", | |
1083 | bond->dev->name, slave->dev->name); | |
1084 | bond->primary_slave = slave; | |
1085 | bond_select_active_slave(bond); | |
1086 | goto out; | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | /* if we got here, then we didn't match the name of any slave */ | |
1091 | ||
1092 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1093 | printk(KERN_INFO DRV_NAME | |
1094 | ": %s: Setting primary slave to None.\n", | |
1095 | bond->dev->name); | |
3418db7c | 1096 | bond->primary_slave = NULL; |
b76cdba9 MW |
1097 | bond_select_active_slave(bond); |
1098 | } else { | |
1099 | printk(KERN_INFO DRV_NAME | |
1100 | ": %s: Unable to set %.*s as primary slave as it is not a slave.\n", | |
1101 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1102 | } | |
1103 | } | |
1104 | out: | |
1105 | write_unlock_bh(&bond->lock); | |
1106 | return count; | |
1107 | } | |
43cb76d9 | 1108 | static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, bonding_show_primary, bonding_store_primary); |
b76cdba9 MW |
1109 | |
1110 | /* | |
1111 | * Show and set the use_carrier flag. | |
1112 | */ | |
43cb76d9 GKH |
1113 | static ssize_t bonding_show_carrier(struct device *d, |
1114 | struct device_attribute *attr, | |
1115 | char *buf) | |
b76cdba9 | 1116 | { |
43cb76d9 | 1117 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1118 | |
1119 | return sprintf(buf, "%d\n", bond->params.use_carrier) + 1; | |
1120 | } | |
1121 | ||
43cb76d9 GKH |
1122 | static ssize_t bonding_store_carrier(struct device *d, |
1123 | struct device_attribute *attr, | |
1124 | const char *buf, size_t count) | |
b76cdba9 MW |
1125 | { |
1126 | int new_value, ret = count; | |
43cb76d9 | 1127 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1128 | |
1129 | ||
1130 | if (sscanf(buf, "%d", &new_value) != 1) { | |
1131 | printk(KERN_ERR DRV_NAME | |
1132 | ": %s: no use_carrier value specified.\n", | |
1133 | bond->dev->name); | |
1134 | ret = -EINVAL; | |
1135 | goto out; | |
1136 | } | |
1137 | if ((new_value == 0) || (new_value == 1)) { | |
1138 | bond->params.use_carrier = new_value; | |
1139 | printk(KERN_INFO DRV_NAME ": %s: Setting use_carrier to %d.\n", | |
1140 | bond->dev->name, new_value); | |
1141 | } else { | |
1142 | printk(KERN_INFO DRV_NAME | |
1143 | ": %s: Ignoring invalid use_carrier value %d.\n", | |
1144 | bond->dev->name, new_value); | |
1145 | } | |
1146 | out: | |
1147 | return count; | |
1148 | } | |
43cb76d9 | 1149 | static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, bonding_show_carrier, bonding_store_carrier); |
b76cdba9 MW |
1150 | |
1151 | ||
1152 | /* | |
1153 | * Show and set currently active_slave. | |
1154 | */ | |
43cb76d9 GKH |
1155 | static ssize_t bonding_show_active_slave(struct device *d, |
1156 | struct device_attribute *attr, | |
1157 | char *buf) | |
b76cdba9 MW |
1158 | { |
1159 | struct slave *curr; | |
43cb76d9 | 1160 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1161 | int count; |
1162 | ||
1163 | ||
1164 | read_lock(&bond->curr_slave_lock); | |
1165 | curr = bond->curr_active_slave; | |
1166 | read_unlock(&bond->curr_slave_lock); | |
1167 | ||
1168 | if (USES_PRIMARY(bond->params.mode) && curr) | |
1169 | count = sprintf(buf, "%s\n", curr->dev->name) + 1; | |
1170 | else | |
1171 | count = sprintf(buf, "\n") + 1; | |
1172 | return count; | |
1173 | } | |
1174 | ||
43cb76d9 GKH |
1175 | static ssize_t bonding_store_active_slave(struct device *d, |
1176 | struct device_attribute *attr, | |
1177 | const char *buf, size_t count) | |
b76cdba9 MW |
1178 | { |
1179 | int i; | |
1180 | struct slave *slave; | |
1181 | struct slave *old_active = NULL; | |
1182 | struct slave *new_active = NULL; | |
43cb76d9 | 1183 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1184 | |
1185 | write_lock_bh(&bond->lock); | |
1186 | if (!USES_PRIMARY(bond->params.mode)) { | |
1187 | printk(KERN_INFO DRV_NAME | |
1188 | ": %s: Unable to change active slave; %s is in mode %d\n", | |
1189 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1190 | } else { | |
1191 | bond_for_each_slave(bond, slave, i) { | |
1192 | if (strnicmp | |
1193 | (slave->dev->name, buf, | |
1194 | strlen(slave->dev->name)) == 0) { | |
1195 | old_active = bond->curr_active_slave; | |
1196 | new_active = slave; | |
a50d8de2 | 1197 | if (new_active == old_active) { |
b76cdba9 MW |
1198 | /* do nothing */ |
1199 | printk(KERN_INFO DRV_NAME | |
1200 | ": %s: %s is already the current active slave.\n", | |
1201 | bond->dev->name, slave->dev->name); | |
1202 | goto out; | |
1203 | } | |
1204 | else { | |
1205 | if ((new_active) && | |
1206 | (old_active) && | |
1207 | (new_active->link == BOND_LINK_UP) && | |
1208 | IS_UP(new_active->dev)) { | |
1209 | printk(KERN_INFO DRV_NAME | |
1210 | ": %s: Setting %s as active slave.\n", | |
1211 | bond->dev->name, slave->dev->name); | |
1212 | bond_change_active_slave(bond, new_active); | |
1213 | } | |
1214 | else { | |
1215 | printk(KERN_INFO DRV_NAME | |
1216 | ": %s: Could not set %s as active slave; " | |
1217 | "either %s is down or the link is down.\n", | |
1218 | bond->dev->name, slave->dev->name, | |
1219 | slave->dev->name); | |
1220 | } | |
1221 | goto out; | |
1222 | } | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | /* if we got here, then we didn't match the name of any slave */ | |
1227 | ||
1228 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1229 | printk(KERN_INFO DRV_NAME | |
1230 | ": %s: Setting active slave to None.\n", | |
1231 | bond->dev->name); | |
3418db7c | 1232 | bond->primary_slave = NULL; |
b76cdba9 MW |
1233 | bond_select_active_slave(bond); |
1234 | } else { | |
1235 | printk(KERN_INFO DRV_NAME | |
1236 | ": %s: Unable to set %.*s as active slave as it is not a slave.\n", | |
1237 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1238 | } | |
1239 | } | |
1240 | out: | |
1241 | write_unlock_bh(&bond->lock); | |
1242 | return count; | |
1243 | ||
1244 | } | |
43cb76d9 | 1245 | static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, bonding_show_active_slave, bonding_store_active_slave); |
b76cdba9 MW |
1246 | |
1247 | ||
1248 | /* | |
1249 | * Show link status of the bond interface. | |
1250 | */ | |
43cb76d9 GKH |
1251 | static ssize_t bonding_show_mii_status(struct device *d, |
1252 | struct device_attribute *attr, | |
1253 | char *buf) | |
b76cdba9 MW |
1254 | { |
1255 | struct slave *curr; | |
43cb76d9 | 1256 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1257 | |
1258 | read_lock(&bond->curr_slave_lock); | |
1259 | curr = bond->curr_active_slave; | |
1260 | read_unlock(&bond->curr_slave_lock); | |
1261 | ||
1262 | return sprintf(buf, "%s\n", (curr) ? "up" : "down") + 1; | |
1263 | } | |
43cb76d9 | 1264 | static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL); |
b76cdba9 MW |
1265 | |
1266 | ||
1267 | /* | |
1268 | * Show current 802.3ad aggregator ID. | |
1269 | */ | |
43cb76d9 GKH |
1270 | static ssize_t bonding_show_ad_aggregator(struct device *d, |
1271 | struct device_attribute *attr, | |
1272 | char *buf) | |
b76cdba9 MW |
1273 | { |
1274 | int count = 0; | |
43cb76d9 | 1275 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1276 | |
1277 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1278 | struct ad_info ad_info; | |
1279 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id) + 1; | |
1280 | } | |
1281 | else | |
1282 | count = sprintf(buf, "\n") + 1; | |
1283 | ||
1284 | return count; | |
1285 | } | |
43cb76d9 | 1286 | static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL); |
b76cdba9 MW |
1287 | |
1288 | ||
1289 | /* | |
1290 | * Show number of active 802.3ad ports. | |
1291 | */ | |
43cb76d9 GKH |
1292 | static ssize_t bonding_show_ad_num_ports(struct device *d, |
1293 | struct device_attribute *attr, | |
1294 | char *buf) | |
b76cdba9 MW |
1295 | { |
1296 | int count = 0; | |
43cb76d9 | 1297 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1298 | |
1299 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1300 | struct ad_info ad_info; | |
1301 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports) + 1; | |
1302 | } | |
1303 | else | |
1304 | count = sprintf(buf, "\n") + 1; | |
1305 | ||
1306 | return count; | |
1307 | } | |
43cb76d9 | 1308 | static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL); |
b76cdba9 MW |
1309 | |
1310 | ||
1311 | /* | |
1312 | * Show current 802.3ad actor key. | |
1313 | */ | |
43cb76d9 GKH |
1314 | static ssize_t bonding_show_ad_actor_key(struct device *d, |
1315 | struct device_attribute *attr, | |
1316 | char *buf) | |
b76cdba9 MW |
1317 | { |
1318 | int count = 0; | |
43cb76d9 | 1319 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1320 | |
1321 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1322 | struct ad_info ad_info; | |
1323 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key) + 1; | |
1324 | } | |
1325 | else | |
1326 | count = sprintf(buf, "\n") + 1; | |
1327 | ||
1328 | return count; | |
1329 | } | |
43cb76d9 | 1330 | static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL); |
b76cdba9 MW |
1331 | |
1332 | ||
1333 | /* | |
1334 | * Show current 802.3ad partner key. | |
1335 | */ | |
43cb76d9 GKH |
1336 | static ssize_t bonding_show_ad_partner_key(struct device *d, |
1337 | struct device_attribute *attr, | |
1338 | char *buf) | |
b76cdba9 MW |
1339 | { |
1340 | int count = 0; | |
43cb76d9 | 1341 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1342 | |
1343 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1344 | struct ad_info ad_info; | |
1345 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key) + 1; | |
1346 | } | |
1347 | else | |
1348 | count = sprintf(buf, "\n") + 1; | |
1349 | ||
1350 | return count; | |
1351 | } | |
43cb76d9 | 1352 | static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL); |
b76cdba9 MW |
1353 | |
1354 | ||
1355 | /* | |
1356 | * Show current 802.3ad partner mac. | |
1357 | */ | |
43cb76d9 GKH |
1358 | static ssize_t bonding_show_ad_partner_mac(struct device *d, |
1359 | struct device_attribute *attr, | |
1360 | char *buf) | |
b76cdba9 MW |
1361 | { |
1362 | int count = 0; | |
43cb76d9 | 1363 | struct bonding *bond = to_bond(d); |
0795af57 | 1364 | DECLARE_MAC_BUF(mac); |
b76cdba9 MW |
1365 | |
1366 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1367 | struct ad_info ad_info; | |
1368 | if (!bond_3ad_get_active_agg_info(bond, &ad_info)) { | |
0795af57 JP |
1369 | count = sprintf(buf,"%s\n", |
1370 | print_mac(mac, ad_info.partner_system)) | |
1371 | + 1; | |
b76cdba9 MW |
1372 | } |
1373 | } | |
1374 | else | |
1375 | count = sprintf(buf, "\n") + 1; | |
1376 | ||
1377 | return count; | |
1378 | } | |
43cb76d9 | 1379 | static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL); |
b76cdba9 MW |
1380 | |
1381 | ||
1382 | ||
1383 | static struct attribute *per_bond_attrs[] = { | |
43cb76d9 GKH |
1384 | &dev_attr_slaves.attr, |
1385 | &dev_attr_mode.attr, | |
1386 | &dev_attr_arp_validate.attr, | |
1387 | &dev_attr_arp_interval.attr, | |
1388 | &dev_attr_arp_ip_target.attr, | |
1389 | &dev_attr_downdelay.attr, | |
1390 | &dev_attr_updelay.attr, | |
1391 | &dev_attr_lacp_rate.attr, | |
1392 | &dev_attr_xmit_hash_policy.attr, | |
1393 | &dev_attr_miimon.attr, | |
1394 | &dev_attr_primary.attr, | |
1395 | &dev_attr_use_carrier.attr, | |
1396 | &dev_attr_active_slave.attr, | |
1397 | &dev_attr_mii_status.attr, | |
1398 | &dev_attr_ad_aggregator.attr, | |
1399 | &dev_attr_ad_num_ports.attr, | |
1400 | &dev_attr_ad_actor_key.attr, | |
1401 | &dev_attr_ad_partner_key.attr, | |
1402 | &dev_attr_ad_partner_mac.attr, | |
b76cdba9 MW |
1403 | NULL, |
1404 | }; | |
1405 | ||
1406 | static struct attribute_group bonding_group = { | |
1407 | .name = "bonding", | |
1408 | .attrs = per_bond_attrs, | |
1409 | }; | |
1410 | ||
1411 | /* | |
1412 | * Initialize sysfs. This sets up the bonding_masters file in | |
1413 | * /sys/class/net. | |
1414 | */ | |
1415 | int bond_create_sysfs(void) | |
1416 | { | |
1417 | int ret = 0; | |
1418 | struct bonding *firstbond; | |
1419 | ||
1420 | init_rwsem(&bonding_rwsem); | |
1421 | ||
1422 | /* get the netdev class pointer */ | |
1423 | firstbond = container_of(bond_dev_list.next, struct bonding, bond_list); | |
1424 | if (!firstbond) | |
1425 | return -ENODEV; | |
1426 | ||
43cb76d9 | 1427 | netdev_class = firstbond->dev->dev.class; |
b76cdba9 MW |
1428 | if (!netdev_class) |
1429 | return -ENODEV; | |
1430 | ||
1431 | ret = class_create_file(netdev_class, &class_attr_bonding_masters); | |
877cbd36 JV |
1432 | /* |
1433 | * Permit multiple loads of the module by ignoring failures to | |
1434 | * create the bonding_masters sysfs file. Bonding devices | |
1435 | * created by second or subsequent loads of the module will | |
1436 | * not be listed in, or controllable by, bonding_masters, but | |
1437 | * will have the usual "bonding" sysfs directory. | |
1438 | * | |
1439 | * This is done to preserve backwards compatibility for | |
1440 | * initscripts/sysconfig, which load bonding multiple times to | |
1441 | * configure multiple bonding devices. | |
1442 | */ | |
1443 | if (ret == -EEXIST) { | |
1444 | netdev_class = NULL; | |
1445 | return 0; | |
1446 | } | |
b76cdba9 MW |
1447 | |
1448 | return ret; | |
1449 | ||
1450 | } | |
1451 | ||
1452 | /* | |
1453 | * Remove /sys/class/net/bonding_masters. | |
1454 | */ | |
1455 | void bond_destroy_sysfs(void) | |
1456 | { | |
1457 | if (netdev_class) | |
1458 | class_remove_file(netdev_class, &class_attr_bonding_masters); | |
1459 | } | |
1460 | ||
1461 | /* | |
1462 | * Initialize sysfs for each bond. This sets up and registers | |
1463 | * the 'bondctl' directory for each individual bond under /sys/class/net. | |
1464 | */ | |
1465 | int bond_create_sysfs_entry(struct bonding *bond) | |
1466 | { | |
1467 | struct net_device *dev = bond->dev; | |
1468 | int err; | |
1469 | ||
43cb76d9 | 1470 | err = sysfs_create_group(&(dev->dev.kobj), &bonding_group); |
b76cdba9 MW |
1471 | if (err) { |
1472 | printk(KERN_EMERG "eek! didn't create group!\n"); | |
1473 | } | |
1474 | ||
1475 | if (expected_refcount < 1) | |
43cb76d9 | 1476 | expected_refcount = atomic_read(&bond->dev->dev.kobj.kref.refcount); |
b76cdba9 MW |
1477 | |
1478 | return err; | |
1479 | } | |
1480 | /* | |
1481 | * Remove sysfs entries for each bond. | |
1482 | */ | |
1483 | void bond_destroy_sysfs_entry(struct bonding *bond) | |
1484 | { | |
1485 | struct net_device *dev = bond->dev; | |
1486 | ||
43cb76d9 | 1487 | sysfs_remove_group(&(dev->dev.kobj), &bonding_group); |
b76cdba9 MW |
1488 | } |
1489 |