Commit | Line | Data |
---|---|---|
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 | 38 | |
b76cdba9 | 39 | #include "bonding.h" |
5a03cdb7 | 40 | |
43cb76d9 | 41 | #define to_dev(obj) container_of(obj,struct device,kobj) |
454d7c9b | 42 | #define to_bond(cd) ((struct bonding *)(netdev_priv(to_net_dev(cd)))) |
b76cdba9 MW |
43 | |
44 | /*---------------------------- Declarations -------------------------------*/ | |
45 | ||
b76cdba9 | 46 | static int expected_refcount = -1; |
b76cdba9 MW |
47 | /*--------------------------- Data Structures -----------------------------*/ |
48 | ||
3a4fa0a2 | 49 | /* Bonding sysfs lock. Why can't we just use the subsystem lock? |
b76cdba9 MW |
50 | * Because kobject_register tries to acquire the subsystem lock. If |
51 | * we already hold the lock (which we would if the user was creating | |
52 | * a new bond through the sysfs interface), we deadlock. | |
53 | * This lock is only needed when deleting a bond - we need to make sure | |
54 | * that we don't collide with an ongoing ioctl. | |
55 | */ | |
56 | ||
57 | struct rw_semaphore bonding_rwsem; | |
58 | ||
59 | ||
60 | ||
61 | ||
62 | /*------------------------------ Functions --------------------------------*/ | |
63 | ||
64 | /* | |
65 | * "show" function for the bond_masters attribute. | |
66 | * The class parameter is ignored. | |
67 | */ | |
b8843665 | 68 | static ssize_t bonding_show_bonds(struct class *cls, char *buf) |
b76cdba9 MW |
69 | { |
70 | int res = 0; | |
71 | struct bonding *bond; | |
72 | ||
73 | down_read(&(bonding_rwsem)); | |
74 | ||
75 | list_for_each_entry(bond, &bond_dev_list, bond_list) { | |
76 | if (res > (PAGE_SIZE - IFNAMSIZ)) { | |
77 | /* not enough space for another interface name */ | |
78 | if ((PAGE_SIZE - res) > 10) | |
79 | res = PAGE_SIZE - 10; | |
b8843665 | 80 | res += sprintf(buf + res, "++more++ "); |
b76cdba9 MW |
81 | break; |
82 | } | |
b8843665 | 83 | res += sprintf(buf + res, "%s ", bond->dev->name); |
b76cdba9 | 84 | } |
1dcdcd69 WF |
85 | if (res) |
86 | buf[res-1] = '\n'; /* eat the leftover space */ | |
b76cdba9 MW |
87 | up_read(&(bonding_rwsem)); |
88 | return res; | |
89 | } | |
90 | ||
91 | /* | |
92 | * "store" function for the bond_masters attribute. This is what | |
93 | * creates and deletes entire bonds. | |
94 | * | |
95 | * The class parameter is ignored. | |
96 | * | |
97 | */ | |
98 | ||
99 | static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t count) | |
100 | { | |
101 | char command[IFNAMSIZ + 1] = {0, }; | |
102 | char *ifname; | |
027ea041 | 103 | int rv, res = count; |
b76cdba9 | 104 | struct bonding *bond; |
b76cdba9 | 105 | |
b76cdba9 MW |
106 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ |
107 | ifname = command + 1; | |
108 | if ((strlen(command) <= 1) || | |
109 | !dev_valid_name(ifname)) | |
110 | goto err_no_cmd; | |
111 | ||
112 | if (command[0] == '+') { | |
b76cdba9 MW |
113 | printk(KERN_INFO DRV_NAME |
114 | ": %s is being created...\n", ifname); | |
0dd646fe | 115 | rv = bond_create(ifname, &bonding_defaults); |
027ea041 JV |
116 | if (rv) { |
117 | printk(KERN_INFO DRV_NAME ": Bond creation failed.\n"); | |
118 | res = rv; | |
b76cdba9 MW |
119 | } |
120 | goto out; | |
121 | } | |
122 | ||
123 | if (command[0] == '-') { | |
027ea041 JV |
124 | rtnl_lock(); |
125 | down_write(&bonding_rwsem); | |
126 | ||
0883beca | 127 | list_for_each_entry(bond, &bond_dev_list, bond_list) |
b76cdba9 | 128 | if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { |
b76cdba9 MW |
129 | /* check the ref count on the bond's kobject. |
130 | * If it's > expected, then there's a file open, | |
131 | * and we have to fail. | |
132 | */ | |
43cb76d9 | 133 | if (atomic_read(&bond->dev->dev.kobj.kref.refcount) |
b76cdba9 | 134 | > expected_refcount){ |
b76cdba9 MW |
135 | printk(KERN_INFO DRV_NAME |
136 | ": Unable remove bond %s due to open references.\n", | |
137 | ifname); | |
138 | res = -EPERM; | |
c4ebc66a | 139 | goto out_unlock; |
b76cdba9 MW |
140 | } |
141 | printk(KERN_INFO DRV_NAME | |
142 | ": %s is being deleted...\n", | |
143 | bond->dev->name); | |
d90a162a | 144 | bond_destroy(bond); |
c4ebc66a | 145 | goto out_unlock; |
b76cdba9 MW |
146 | } |
147 | ||
148 | printk(KERN_ERR DRV_NAME | |
149 | ": unable to delete non-existent bond %s\n", ifname); | |
150 | res = -ENODEV; | |
c4ebc66a | 151 | goto out_unlock; |
b76cdba9 MW |
152 | } |
153 | ||
154 | err_no_cmd: | |
155 | printk(KERN_ERR DRV_NAME | |
156 | ": no command found in bonding_masters. Use +ifname or -ifname.\n"); | |
c4ebc66a JV |
157 | return -EPERM; |
158 | ||
159 | out_unlock: | |
160 | up_write(&bonding_rwsem); | |
161 | rtnl_unlock(); | |
b76cdba9 MW |
162 | |
163 | /* Always return either count or an error. If you return 0, you'll | |
164 | * get called forever, which is bad. | |
165 | */ | |
166 | out: | |
b76cdba9 MW |
167 | return res; |
168 | } | |
169 | /* class attribute for bond_masters file. This ends up in /sys/class/net */ | |
170 | static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO, | |
171 | bonding_show_bonds, bonding_store_bonds); | |
172 | ||
173 | int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave) | |
174 | { | |
175 | char linkname[IFNAMSIZ+7]; | |
176 | int ret = 0; | |
177 | ||
178 | /* first, create a link from the slave back to the master */ | |
43cb76d9 | 179 | ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj), |
b76cdba9 MW |
180 | "master"); |
181 | if (ret) | |
182 | return ret; | |
183 | /* next, create a link from the master to the slave */ | |
184 | sprintf(linkname,"slave_%s",slave->name); | |
43cb76d9 | 185 | ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj), |
b76cdba9 MW |
186 | linkname); |
187 | return ret; | |
188 | ||
189 | } | |
190 | ||
191 | void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave) | |
192 | { | |
193 | char linkname[IFNAMSIZ+7]; | |
194 | ||
43cb76d9 | 195 | sysfs_remove_link(&(slave->dev.kobj), "master"); |
b76cdba9 | 196 | sprintf(linkname,"slave_%s",slave->name); |
43cb76d9 | 197 | sysfs_remove_link(&(master->dev.kobj), linkname); |
b76cdba9 MW |
198 | } |
199 | ||
200 | ||
201 | /* | |
202 | * Show the slaves in the current bond. | |
203 | */ | |
43cb76d9 GKH |
204 | static ssize_t bonding_show_slaves(struct device *d, |
205 | struct device_attribute *attr, char *buf) | |
b76cdba9 MW |
206 | { |
207 | struct slave *slave; | |
208 | int i, res = 0; | |
43cb76d9 | 209 | struct bonding *bond = to_bond(d); |
b76cdba9 | 210 | |
6603a6f2 | 211 | read_lock(&bond->lock); |
b76cdba9 MW |
212 | bond_for_each_slave(bond, slave, i) { |
213 | if (res > (PAGE_SIZE - IFNAMSIZ)) { | |
214 | /* not enough space for another interface name */ | |
215 | if ((PAGE_SIZE - res) > 10) | |
216 | res = PAGE_SIZE - 10; | |
7bd46508 | 217 | res += sprintf(buf + res, "++more++ "); |
b76cdba9 MW |
218 | break; |
219 | } | |
220 | res += sprintf(buf + res, "%s ", slave->dev->name); | |
221 | } | |
6603a6f2 | 222 | read_unlock(&bond->lock); |
1dcdcd69 WF |
223 | if (res) |
224 | buf[res-1] = '\n'; /* eat the leftover space */ | |
b76cdba9 MW |
225 | return res; |
226 | } | |
227 | ||
228 | /* | |
229 | * Set the slaves in the current bond. The bond interface must be | |
230 | * up for this to succeed. | |
231 | * This function is largely the same flow as bonding_update_bonds(). | |
232 | */ | |
43cb76d9 GKH |
233 | static ssize_t bonding_store_slaves(struct device *d, |
234 | struct device_attribute *attr, | |
235 | const char *buffer, size_t count) | |
b76cdba9 MW |
236 | { |
237 | char command[IFNAMSIZ + 1] = { 0, }; | |
238 | char *ifname; | |
239 | int i, res, found, ret = count; | |
3158bf7d | 240 | u32 original_mtu; |
b76cdba9 | 241 | struct slave *slave; |
3418db7c | 242 | struct net_device *dev = NULL; |
43cb76d9 | 243 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
244 | |
245 | /* Quick sanity check -- is the bond interface up? */ | |
246 | if (!(bond->dev->flags & IFF_UP)) { | |
6b1bf096 MS |
247 | printk(KERN_WARNING DRV_NAME |
248 | ": %s: doing slave updates when interface is down.\n", | |
b76cdba9 | 249 | bond->dev->name); |
b76cdba9 MW |
250 | } |
251 | ||
252 | /* Note: We can't hold bond->lock here, as bond_create grabs it. */ | |
253 | ||
027ea041 JV |
254 | rtnl_lock(); |
255 | down_write(&(bonding_rwsem)); | |
256 | ||
b76cdba9 MW |
257 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ |
258 | ifname = command + 1; | |
259 | if ((strlen(command) <= 1) || | |
260 | !dev_valid_name(ifname)) | |
261 | goto err_no_cmd; | |
262 | ||
263 | if (command[0] == '+') { | |
264 | ||
265 | /* Got a slave name in ifname. Is it already in the list? */ | |
266 | found = 0; | |
6603a6f2 | 267 | read_lock(&bond->lock); |
b76cdba9 MW |
268 | bond_for_each_slave(bond, slave, i) |
269 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
270 | printk(KERN_ERR DRV_NAME | |
271 | ": %s: Interface %s is already enslaved!\n", | |
272 | bond->dev->name, ifname); | |
273 | ret = -EPERM; | |
6603a6f2 | 274 | read_unlock(&bond->lock); |
b76cdba9 MW |
275 | goto out; |
276 | } | |
277 | ||
6603a6f2 | 278 | read_unlock(&bond->lock); |
b76cdba9 MW |
279 | printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n", |
280 | bond->dev->name, ifname); | |
881d966b | 281 | dev = dev_get_by_name(&init_net, ifname); |
b76cdba9 MW |
282 | if (!dev) { |
283 | printk(KERN_INFO DRV_NAME | |
284 | ": %s: Interface %s does not exist!\n", | |
285 | bond->dev->name, ifname); | |
286 | ret = -EPERM; | |
287 | goto out; | |
288 | } | |
289 | else | |
290 | dev_put(dev); | |
291 | ||
292 | if (dev->flags & IFF_UP) { | |
293 | printk(KERN_ERR DRV_NAME | |
294 | ": %s: Error: Unable to enslave %s " | |
295 | "because it is already up.\n", | |
296 | bond->dev->name, dev->name); | |
297 | ret = -EPERM; | |
298 | goto out; | |
299 | } | |
300 | /* If this is the first slave, then we need to set | |
301 | the master's hardware address to be the same as the | |
302 | slave's. */ | |
303 | if (!(*((u32 *) & (bond->dev->dev_addr[0])))) { | |
304 | memcpy(bond->dev->dev_addr, dev->dev_addr, | |
305 | dev->addr_len); | |
306 | } | |
307 | ||
308 | /* Set the slave's MTU to match the bond */ | |
3158bf7d | 309 | original_mtu = dev->mtu; |
eb7cc59a SH |
310 | res = dev_set_mtu(dev, bond->dev->mtu); |
311 | if (res) { | |
312 | ret = res; | |
313 | goto out; | |
b76cdba9 | 314 | } |
eb7cc59a | 315 | |
b76cdba9 | 316 | res = bond_enslave(bond->dev, dev); |
3158bf7d MS |
317 | bond_for_each_slave(bond, slave, i) |
318 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) | |
319 | slave->original_mtu = original_mtu; | |
b76cdba9 MW |
320 | if (res) { |
321 | ret = res; | |
322 | } | |
323 | goto out; | |
324 | } | |
325 | ||
326 | if (command[0] == '-') { | |
327 | dev = NULL; | |
6952d892 | 328 | original_mtu = 0; |
b76cdba9 MW |
329 | bond_for_each_slave(bond, slave, i) |
330 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
331 | dev = slave->dev; | |
3158bf7d | 332 | original_mtu = slave->original_mtu; |
b76cdba9 MW |
333 | break; |
334 | } | |
335 | if (dev) { | |
336 | printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n", | |
337 | bond->dev->name, dev->name); | |
d90a162a | 338 | res = bond_release(bond->dev, dev); |
b76cdba9 MW |
339 | if (res) { |
340 | ret = res; | |
341 | goto out; | |
342 | } | |
343 | /* set the slave MTU to the default */ | |
eb7cc59a | 344 | dev_set_mtu(dev, original_mtu); |
b76cdba9 MW |
345 | } |
346 | else { | |
347 | printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n", | |
348 | ifname, bond->dev->name); | |
349 | ret = -ENODEV; | |
350 | } | |
351 | goto out; | |
352 | } | |
353 | ||
354 | err_no_cmd: | |
355 | printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name); | |
356 | ret = -EPERM; | |
357 | ||
358 | out: | |
027ea041 JV |
359 | up_write(&(bonding_rwsem)); |
360 | rtnl_unlock(); | |
b76cdba9 MW |
361 | return ret; |
362 | } | |
363 | ||
43cb76d9 | 364 | static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves); |
b76cdba9 MW |
365 | |
366 | /* | |
367 | * Show and set the bonding mode. The bond interface must be down to | |
368 | * change the mode. | |
369 | */ | |
43cb76d9 GKH |
370 | static ssize_t bonding_show_mode(struct device *d, |
371 | struct device_attribute *attr, char *buf) | |
b76cdba9 | 372 | { |
43cb76d9 | 373 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
374 | |
375 | return sprintf(buf, "%s %d\n", | |
376 | bond_mode_tbl[bond->params.mode].modename, | |
7bd46508 | 377 | bond->params.mode); |
b76cdba9 MW |
378 | } |
379 | ||
43cb76d9 GKH |
380 | static ssize_t bonding_store_mode(struct device *d, |
381 | struct device_attribute *attr, | |
382 | const char *buf, size_t count) | |
b76cdba9 MW |
383 | { |
384 | int new_value, ret = count; | |
43cb76d9 | 385 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
386 | |
387 | if (bond->dev->flags & IFF_UP) { | |
388 | printk(KERN_ERR DRV_NAME | |
389 | ": unable to update mode of %s because interface is up.\n", | |
390 | bond->dev->name); | |
391 | ret = -EPERM; | |
392 | goto out; | |
393 | } | |
394 | ||
ece95f7f | 395 | new_value = bond_parse_parm(buf, bond_mode_tbl); |
b76cdba9 MW |
396 | if (new_value < 0) { |
397 | printk(KERN_ERR DRV_NAME | |
398 | ": %s: Ignoring invalid mode value %.*s.\n", | |
399 | bond->dev->name, | |
400 | (int)strlen(buf) - 1, buf); | |
401 | ret = -EINVAL; | |
402 | goto out; | |
403 | } else { | |
8f903c70 JV |
404 | if (bond->params.mode == BOND_MODE_8023AD) |
405 | bond_unset_master_3ad_flags(bond); | |
406 | ||
407 | if (bond->params.mode == BOND_MODE_ALB) | |
408 | bond_unset_master_alb_flags(bond); | |
409 | ||
b76cdba9 MW |
410 | bond->params.mode = new_value; |
411 | bond_set_mode_ops(bond, bond->params.mode); | |
412 | printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n", | |
413 | bond->dev->name, bond_mode_tbl[new_value].modename, new_value); | |
414 | } | |
415 | out: | |
416 | return ret; | |
417 | } | |
43cb76d9 | 418 | static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode); |
b76cdba9 MW |
419 | |
420 | /* | |
421 | * Show and set the bonding transmit hash method. The bond interface must be down to | |
422 | * change the xmit hash policy. | |
423 | */ | |
43cb76d9 GKH |
424 | static ssize_t bonding_show_xmit_hash(struct device *d, |
425 | struct device_attribute *attr, | |
426 | char *buf) | |
b76cdba9 | 427 | { |
43cb76d9 | 428 | struct bonding *bond = to_bond(d); |
b76cdba9 | 429 | |
8e4b9329 WF |
430 | return sprintf(buf, "%s %d\n", |
431 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
432 | bond->params.xmit_policy); | |
b76cdba9 MW |
433 | } |
434 | ||
43cb76d9 GKH |
435 | static ssize_t bonding_store_xmit_hash(struct device *d, |
436 | struct device_attribute *attr, | |
437 | const char *buf, size_t count) | |
b76cdba9 MW |
438 | { |
439 | int new_value, ret = count; | |
43cb76d9 | 440 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
441 | |
442 | if (bond->dev->flags & IFF_UP) { | |
443 | printk(KERN_ERR DRV_NAME | |
444 | "%s: Interface is up. Unable to update xmit policy.\n", | |
445 | bond->dev->name); | |
446 | ret = -EPERM; | |
447 | goto out; | |
448 | } | |
449 | ||
ece95f7f | 450 | new_value = bond_parse_parm(buf, xmit_hashtype_tbl); |
b76cdba9 MW |
451 | if (new_value < 0) { |
452 | printk(KERN_ERR DRV_NAME | |
453 | ": %s: Ignoring invalid xmit hash policy value %.*s.\n", | |
454 | bond->dev->name, | |
455 | (int)strlen(buf) - 1, buf); | |
456 | ret = -EINVAL; | |
457 | goto out; | |
458 | } else { | |
459 | bond->params.xmit_policy = new_value; | |
460 | bond_set_mode_ops(bond, bond->params.mode); | |
461 | printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n", | |
462 | bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value); | |
463 | } | |
464 | out: | |
465 | return ret; | |
466 | } | |
43cb76d9 | 467 | static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash); |
b76cdba9 | 468 | |
f5b2b966 JV |
469 | /* |
470 | * Show and set arp_validate. | |
471 | */ | |
43cb76d9 GKH |
472 | static ssize_t bonding_show_arp_validate(struct device *d, |
473 | struct device_attribute *attr, | |
474 | char *buf) | |
f5b2b966 | 475 | { |
43cb76d9 | 476 | struct bonding *bond = to_bond(d); |
f5b2b966 JV |
477 | |
478 | return sprintf(buf, "%s %d\n", | |
479 | arp_validate_tbl[bond->params.arp_validate].modename, | |
7bd46508 | 480 | bond->params.arp_validate); |
f5b2b966 JV |
481 | } |
482 | ||
43cb76d9 GKH |
483 | static ssize_t bonding_store_arp_validate(struct device *d, |
484 | struct device_attribute *attr, | |
485 | const char *buf, size_t count) | |
f5b2b966 JV |
486 | { |
487 | int new_value; | |
43cb76d9 | 488 | struct bonding *bond = to_bond(d); |
f5b2b966 | 489 | |
ece95f7f | 490 | new_value = bond_parse_parm(buf, arp_validate_tbl); |
f5b2b966 JV |
491 | if (new_value < 0) { |
492 | printk(KERN_ERR DRV_NAME | |
493 | ": %s: Ignoring invalid arp_validate value %s\n", | |
494 | bond->dev->name, buf); | |
495 | return -EINVAL; | |
496 | } | |
497 | if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { | |
498 | printk(KERN_ERR DRV_NAME | |
499 | ": %s: arp_validate only supported in active-backup mode.\n", | |
500 | bond->dev->name); | |
501 | return -EINVAL; | |
502 | } | |
503 | printk(KERN_INFO DRV_NAME ": %s: setting arp_validate to %s (%d).\n", | |
504 | bond->dev->name, arp_validate_tbl[new_value].modename, | |
505 | new_value); | |
506 | ||
507 | if (!bond->params.arp_validate && new_value) { | |
508 | bond_register_arp(bond); | |
509 | } else if (bond->params.arp_validate && !new_value) { | |
510 | bond_unregister_arp(bond); | |
511 | } | |
512 | ||
513 | bond->params.arp_validate = new_value; | |
514 | ||
515 | return count; | |
516 | } | |
517 | ||
43cb76d9 | 518 | static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate, bonding_store_arp_validate); |
f5b2b966 | 519 | |
dd957c57 JV |
520 | /* |
521 | * Show and store fail_over_mac. User only allowed to change the | |
522 | * value when there are no slaves. | |
523 | */ | |
524 | static ssize_t bonding_show_fail_over_mac(struct device *d, struct device_attribute *attr, char *buf) | |
525 | { | |
526 | struct bonding *bond = to_bond(d); | |
527 | ||
3915c1e8 JV |
528 | return sprintf(buf, "%s %d\n", |
529 | fail_over_mac_tbl[bond->params.fail_over_mac].modename, | |
530 | bond->params.fail_over_mac); | |
dd957c57 JV |
531 | } |
532 | ||
533 | static ssize_t bonding_store_fail_over_mac(struct device *d, struct device_attribute *attr, const char *buf, size_t count) | |
534 | { | |
535 | int new_value; | |
dd957c57 JV |
536 | struct bonding *bond = to_bond(d); |
537 | ||
538 | if (bond->slave_cnt != 0) { | |
539 | printk(KERN_ERR DRV_NAME | |
540 | ": %s: Can't alter fail_over_mac with slaves in bond.\n", | |
541 | bond->dev->name); | |
3915c1e8 | 542 | return -EPERM; |
dd957c57 JV |
543 | } |
544 | ||
3915c1e8 JV |
545 | new_value = bond_parse_parm(buf, fail_over_mac_tbl); |
546 | if (new_value < 0) { | |
dd957c57 | 547 | printk(KERN_ERR DRV_NAME |
3915c1e8 JV |
548 | ": %s: Ignoring invalid fail_over_mac value %s.\n", |
549 | bond->dev->name, buf); | |
550 | return -EINVAL; | |
dd957c57 JV |
551 | } |
552 | ||
3915c1e8 JV |
553 | bond->params.fail_over_mac = new_value; |
554 | printk(KERN_INFO DRV_NAME ": %s: Setting fail_over_mac to %s (%d).\n", | |
555 | bond->dev->name, fail_over_mac_tbl[new_value].modename, | |
556 | new_value); | |
557 | ||
558 | return count; | |
dd957c57 JV |
559 | } |
560 | ||
561 | static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR, bonding_show_fail_over_mac, bonding_store_fail_over_mac); | |
562 | ||
b76cdba9 MW |
563 | /* |
564 | * Show and set the arp timer interval. There are two tricky bits | |
565 | * here. First, if ARP monitoring is activated, then we must disable | |
566 | * MII monitoring. Second, if the ARP timer isn't running, we must | |
567 | * start it. | |
568 | */ | |
43cb76d9 GKH |
569 | static ssize_t bonding_show_arp_interval(struct device *d, |
570 | struct device_attribute *attr, | |
571 | char *buf) | |
b76cdba9 | 572 | { |
43cb76d9 | 573 | struct bonding *bond = to_bond(d); |
b76cdba9 | 574 | |
7bd46508 | 575 | return sprintf(buf, "%d\n", bond->params.arp_interval); |
b76cdba9 MW |
576 | } |
577 | ||
43cb76d9 GKH |
578 | static ssize_t bonding_store_arp_interval(struct device *d, |
579 | struct device_attribute *attr, | |
580 | const char *buf, size_t count) | |
b76cdba9 MW |
581 | { |
582 | int new_value, ret = count; | |
43cb76d9 | 583 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
584 | |
585 | if (sscanf(buf, "%d", &new_value) != 1) { | |
586 | printk(KERN_ERR DRV_NAME | |
587 | ": %s: no arp_interval value specified.\n", | |
588 | bond->dev->name); | |
589 | ret = -EINVAL; | |
590 | goto out; | |
591 | } | |
592 | if (new_value < 0) { | |
593 | printk(KERN_ERR DRV_NAME | |
594 | ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n", | |
595 | bond->dev->name, new_value, INT_MAX); | |
596 | ret = -EINVAL; | |
597 | goto out; | |
598 | } | |
599 | ||
600 | printk(KERN_INFO DRV_NAME | |
601 | ": %s: Setting ARP monitoring interval to %d.\n", | |
602 | bond->dev->name, new_value); | |
603 | bond->params.arp_interval = new_value; | |
6cf3f41e JV |
604 | if (bond->params.arp_interval) |
605 | bond->dev->priv_flags |= IFF_MASTER_ARPMON; | |
b76cdba9 MW |
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; | |
1b76b316 JV |
612 | if (delayed_work_pending(&bond->mii_work)) { |
613 | cancel_delayed_work(&bond->mii_work); | |
614 | flush_workqueue(bond->wq); | |
b76cdba9 MW |
615 | } |
616 | } | |
617 | if (!bond->params.arp_targets[0]) { | |
618 | printk(KERN_INFO DRV_NAME | |
619 | ": %s: ARP monitoring has been set up, " | |
620 | "but no ARP targets have been specified.\n", | |
621 | bond->dev->name); | |
622 | } | |
623 | if (bond->dev->flags & IFF_UP) { | |
624 | /* If the interface is up, we may need to fire off | |
625 | * the ARP timer. If the interface is down, the | |
626 | * timer will get fired off when the open function | |
627 | * is called. | |
628 | */ | |
1b76b316 JV |
629 | if (!delayed_work_pending(&bond->arp_work)) { |
630 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) | |
631 | INIT_DELAYED_WORK(&bond->arp_work, | |
632 | bond_activebackup_arp_mon); | |
633 | else | |
634 | INIT_DELAYED_WORK(&bond->arp_work, | |
635 | bond_loadbalance_arp_mon); | |
636 | ||
637 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
b76cdba9 MW |
638 | } |
639 | } | |
640 | ||
641 | out: | |
642 | return ret; | |
643 | } | |
43cb76d9 | 644 | static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR , bonding_show_arp_interval, bonding_store_arp_interval); |
b76cdba9 MW |
645 | |
646 | /* | |
647 | * Show and set the arp targets. | |
648 | */ | |
43cb76d9 GKH |
649 | static ssize_t bonding_show_arp_targets(struct device *d, |
650 | struct device_attribute *attr, | |
651 | char *buf) | |
b76cdba9 MW |
652 | { |
653 | int i, res = 0; | |
43cb76d9 | 654 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
655 | |
656 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { | |
657 | if (bond->params.arp_targets[i]) | |
63779436 HH |
658 | res += sprintf(buf + res, "%pI4 ", |
659 | &bond->params.arp_targets[i]); | |
b76cdba9 | 660 | } |
1dcdcd69 WF |
661 | if (res) |
662 | buf[res-1] = '\n'; /* eat the leftover space */ | |
b76cdba9 MW |
663 | return res; |
664 | } | |
665 | ||
43cb76d9 GKH |
666 | static ssize_t bonding_store_arp_targets(struct device *d, |
667 | struct device_attribute *attr, | |
668 | const char *buf, size_t count) | |
b76cdba9 | 669 | { |
d3bb52b0 | 670 | __be32 newtarget; |
b76cdba9 | 671 | int i = 0, done = 0, ret = count; |
43cb76d9 | 672 | struct bonding *bond = to_bond(d); |
d3bb52b0 | 673 | __be32 *targets; |
b76cdba9 MW |
674 | |
675 | targets = bond->params.arp_targets; | |
676 | newtarget = in_aton(buf + 1); | |
677 | /* look for adds */ | |
678 | if (buf[0] == '+') { | |
d3bb52b0 | 679 | if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) { |
b76cdba9 | 680 | printk(KERN_ERR DRV_NAME |
63779436 HH |
681 | ": %s: invalid ARP target %pI4 specified for addition\n", |
682 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
683 | ret = -EINVAL; |
684 | goto out; | |
685 | } | |
686 | /* look for an empty slot to put the target in, and check for dupes */ | |
687 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
688 | if (targets[i] == newtarget) { /* duplicate */ | |
689 | printk(KERN_ERR DRV_NAME | |
63779436 HH |
690 | ": %s: ARP target %pI4 is already present\n", |
691 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
692 | if (done) |
693 | targets[i] = 0; | |
694 | ret = -EINVAL; | |
695 | goto out; | |
696 | } | |
697 | if (targets[i] == 0 && !done) { | |
698 | printk(KERN_INFO DRV_NAME | |
63779436 HH |
699 | ": %s: adding ARP target %pI4.\n", |
700 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
701 | done = 1; |
702 | targets[i] = newtarget; | |
703 | } | |
704 | } | |
705 | if (!done) { | |
706 | printk(KERN_ERR DRV_NAME | |
707 | ": %s: ARP target table is full!\n", | |
708 | bond->dev->name); | |
709 | ret = -EINVAL; | |
710 | goto out; | |
711 | } | |
712 | ||
713 | } | |
714 | else if (buf[0] == '-') { | |
d3bb52b0 | 715 | if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) { |
b76cdba9 | 716 | printk(KERN_ERR DRV_NAME |
63779436 HH |
717 | ": %s: invalid ARP target %pI4 specified for removal\n", |
718 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
719 | ret = -EINVAL; |
720 | goto out; | |
721 | } | |
722 | ||
723 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
724 | if (targets[i] == newtarget) { | |
725 | printk(KERN_INFO DRV_NAME | |
63779436 HH |
726 | ": %s: removing ARP target %pI4.\n", |
727 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
728 | targets[i] = 0; |
729 | done = 1; | |
730 | } | |
731 | } | |
732 | if (!done) { | |
733 | printk(KERN_INFO DRV_NAME | |
63779436 HH |
734 | ": %s: unable to remove nonexistent ARP target %pI4.\n", |
735 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
736 | ret = -EINVAL; |
737 | goto out; | |
738 | } | |
739 | } | |
740 | else { | |
741 | printk(KERN_ERR DRV_NAME ": no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n", | |
742 | bond->dev->name); | |
743 | ret = -EPERM; | |
744 | goto out; | |
745 | } | |
746 | ||
747 | out: | |
748 | return ret; | |
749 | } | |
43cb76d9 | 750 | static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets); |
b76cdba9 MW |
751 | |
752 | /* | |
753 | * Show and set the up and down delays. These must be multiples of the | |
754 | * MII monitoring value, and are stored internally as the multiplier. | |
755 | * Thus, we must translate to MS for the real world. | |
756 | */ | |
43cb76d9 GKH |
757 | static ssize_t bonding_show_downdelay(struct device *d, |
758 | struct device_attribute *attr, | |
759 | char *buf) | |
b76cdba9 | 760 | { |
43cb76d9 | 761 | struct bonding *bond = to_bond(d); |
b76cdba9 | 762 | |
7bd46508 | 763 | return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon); |
b76cdba9 MW |
764 | } |
765 | ||
43cb76d9 GKH |
766 | static ssize_t bonding_store_downdelay(struct device *d, |
767 | struct device_attribute *attr, | |
768 | const char *buf, size_t count) | |
b76cdba9 MW |
769 | { |
770 | int new_value, ret = count; | |
43cb76d9 | 771 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
772 | |
773 | if (!(bond->params.miimon)) { | |
774 | printk(KERN_ERR DRV_NAME | |
775 | ": %s: Unable to set down delay as MII monitoring is disabled\n", | |
776 | bond->dev->name); | |
777 | ret = -EPERM; | |
778 | goto out; | |
779 | } | |
780 | ||
781 | if (sscanf(buf, "%d", &new_value) != 1) { | |
782 | printk(KERN_ERR DRV_NAME | |
783 | ": %s: no down delay value specified.\n", | |
784 | bond->dev->name); | |
785 | ret = -EINVAL; | |
786 | goto out; | |
787 | } | |
788 | if (new_value < 0) { | |
789 | printk(KERN_ERR DRV_NAME | |
790 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
791 | bond->dev->name, new_value, 1, INT_MAX); | |
792 | ret = -EINVAL; | |
793 | goto out; | |
794 | } else { | |
795 | if ((new_value % bond->params.miimon) != 0) { | |
796 | printk(KERN_WARNING DRV_NAME | |
797 | ": %s: Warning: down delay (%d) is not a multiple " | |
798 | "of miimon (%d), delay rounded to %d ms\n", | |
799 | bond->dev->name, new_value, bond->params.miimon, | |
800 | (new_value / bond->params.miimon) * | |
801 | bond->params.miimon); | |
802 | } | |
803 | bond->params.downdelay = new_value / bond->params.miimon; | |
804 | printk(KERN_INFO DRV_NAME ": %s: Setting down delay to %d.\n", | |
805 | bond->dev->name, bond->params.downdelay * bond->params.miimon); | |
806 | ||
807 | } | |
808 | ||
809 | out: | |
810 | return ret; | |
811 | } | |
43cb76d9 | 812 | static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay); |
b76cdba9 | 813 | |
43cb76d9 GKH |
814 | static ssize_t bonding_show_updelay(struct device *d, |
815 | struct device_attribute *attr, | |
816 | char *buf) | |
b76cdba9 | 817 | { |
43cb76d9 | 818 | struct bonding *bond = to_bond(d); |
b76cdba9 | 819 | |
7bd46508 | 820 | return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon); |
b76cdba9 MW |
821 | |
822 | } | |
823 | ||
43cb76d9 GKH |
824 | static ssize_t bonding_store_updelay(struct device *d, |
825 | struct device_attribute *attr, | |
826 | const char *buf, size_t count) | |
b76cdba9 MW |
827 | { |
828 | int new_value, ret = count; | |
43cb76d9 | 829 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
830 | |
831 | if (!(bond->params.miimon)) { | |
832 | printk(KERN_ERR DRV_NAME | |
833 | ": %s: Unable to set up delay as MII monitoring is disabled\n", | |
834 | bond->dev->name); | |
835 | ret = -EPERM; | |
836 | goto out; | |
837 | } | |
838 | ||
839 | if (sscanf(buf, "%d", &new_value) != 1) { | |
840 | printk(KERN_ERR DRV_NAME | |
841 | ": %s: no up delay value specified.\n", | |
842 | bond->dev->name); | |
843 | ret = -EINVAL; | |
844 | goto out; | |
845 | } | |
846 | if (new_value < 0) { | |
847 | printk(KERN_ERR DRV_NAME | |
848 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
849 | bond->dev->name, new_value, 1, INT_MAX); | |
850 | ret = -EINVAL; | |
851 | goto out; | |
852 | } else { | |
853 | if ((new_value % bond->params.miimon) != 0) { | |
854 | printk(KERN_WARNING DRV_NAME | |
855 | ": %s: Warning: up delay (%d) is not a multiple " | |
856 | "of miimon (%d), updelay rounded to %d ms\n", | |
857 | bond->dev->name, new_value, bond->params.miimon, | |
858 | (new_value / bond->params.miimon) * | |
859 | bond->params.miimon); | |
860 | } | |
861 | bond->params.updelay = new_value / bond->params.miimon; | |
862 | printk(KERN_INFO DRV_NAME ": %s: Setting up delay to %d.\n", | |
863 | bond->dev->name, bond->params.updelay * bond->params.miimon); | |
864 | ||
865 | } | |
866 | ||
867 | out: | |
868 | return ret; | |
869 | } | |
43cb76d9 | 870 | static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR , bonding_show_updelay, bonding_store_updelay); |
b76cdba9 MW |
871 | |
872 | /* | |
873 | * Show and set the LACP interval. Interface must be down, and the mode | |
874 | * must be set to 802.3ad mode. | |
875 | */ | |
43cb76d9 GKH |
876 | static ssize_t bonding_show_lacp(struct device *d, |
877 | struct device_attribute *attr, | |
878 | char *buf) | |
b76cdba9 | 879 | { |
43cb76d9 | 880 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
881 | |
882 | return sprintf(buf, "%s %d\n", | |
883 | bond_lacp_tbl[bond->params.lacp_fast].modename, | |
7bd46508 | 884 | bond->params.lacp_fast); |
b76cdba9 MW |
885 | } |
886 | ||
43cb76d9 GKH |
887 | static ssize_t bonding_store_lacp(struct device *d, |
888 | struct device_attribute *attr, | |
889 | const char *buf, size_t count) | |
b76cdba9 MW |
890 | { |
891 | int new_value, ret = count; | |
43cb76d9 | 892 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
893 | |
894 | if (bond->dev->flags & IFF_UP) { | |
895 | printk(KERN_ERR DRV_NAME | |
896 | ": %s: Unable to update LACP rate because interface is up.\n", | |
897 | bond->dev->name); | |
898 | ret = -EPERM; | |
899 | goto out; | |
900 | } | |
901 | ||
902 | if (bond->params.mode != BOND_MODE_8023AD) { | |
903 | printk(KERN_ERR DRV_NAME | |
904 | ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n", | |
905 | bond->dev->name); | |
906 | ret = -EPERM; | |
907 | goto out; | |
908 | } | |
909 | ||
ece95f7f | 910 | new_value = bond_parse_parm(buf, bond_lacp_tbl); |
b76cdba9 MW |
911 | |
912 | if ((new_value == 1) || (new_value == 0)) { | |
913 | bond->params.lacp_fast = new_value; | |
914 | printk(KERN_INFO DRV_NAME | |
915 | ": %s: Setting LACP rate to %s (%d).\n", | |
916 | bond->dev->name, bond_lacp_tbl[new_value].modename, new_value); | |
917 | } else { | |
918 | printk(KERN_ERR DRV_NAME | |
919 | ": %s: Ignoring invalid LACP rate value %.*s.\n", | |
920 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
921 | ret = -EINVAL; | |
922 | } | |
923 | out: | |
924 | return ret; | |
925 | } | |
43cb76d9 | 926 | static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp); |
b76cdba9 | 927 | |
fd989c83 JV |
928 | static ssize_t bonding_show_ad_select(struct device *d, |
929 | struct device_attribute *attr, | |
930 | char *buf) | |
931 | { | |
932 | struct bonding *bond = to_bond(d); | |
933 | ||
934 | return sprintf(buf, "%s %d\n", | |
935 | ad_select_tbl[bond->params.ad_select].modename, | |
936 | bond->params.ad_select); | |
937 | } | |
938 | ||
939 | ||
940 | static ssize_t bonding_store_ad_select(struct device *d, | |
941 | struct device_attribute *attr, | |
942 | const char *buf, size_t count) | |
943 | { | |
944 | int new_value, ret = count; | |
945 | struct bonding *bond = to_bond(d); | |
946 | ||
947 | if (bond->dev->flags & IFF_UP) { | |
948 | printk(KERN_ERR DRV_NAME | |
949 | ": %s: Unable to update ad_select because interface " | |
950 | "is up.\n", bond->dev->name); | |
951 | ret = -EPERM; | |
952 | goto out; | |
953 | } | |
954 | ||
955 | new_value = bond_parse_parm(buf, ad_select_tbl); | |
956 | ||
957 | if (new_value != -1) { | |
958 | bond->params.ad_select = new_value; | |
959 | printk(KERN_INFO DRV_NAME | |
960 | ": %s: Setting ad_select to %s (%d).\n", | |
961 | bond->dev->name, ad_select_tbl[new_value].modename, | |
962 | new_value); | |
963 | } else { | |
964 | printk(KERN_ERR DRV_NAME | |
965 | ": %s: Ignoring invalid ad_select value %.*s.\n", | |
966 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
967 | ret = -EINVAL; | |
968 | } | |
969 | out: | |
970 | return ret; | |
971 | } | |
972 | ||
973 | static DEVICE_ATTR(ad_select, S_IRUGO | S_IWUSR, bonding_show_ad_select, bonding_store_ad_select); | |
974 | ||
7893b249 MS |
975 | /* |
976 | * Show and set the number of grat ARP to send after a failover event. | |
977 | */ | |
978 | static ssize_t bonding_show_n_grat_arp(struct device *d, | |
979 | struct device_attribute *attr, | |
980 | char *buf) | |
981 | { | |
982 | struct bonding *bond = to_bond(d); | |
983 | ||
984 | return sprintf(buf, "%d\n", bond->params.num_grat_arp); | |
985 | } | |
986 | ||
987 | static ssize_t bonding_store_n_grat_arp(struct device *d, | |
988 | struct device_attribute *attr, | |
989 | const char *buf, size_t count) | |
990 | { | |
991 | int new_value, ret = count; | |
992 | struct bonding *bond = to_bond(d); | |
993 | ||
994 | if (sscanf(buf, "%d", &new_value) != 1) { | |
995 | printk(KERN_ERR DRV_NAME | |
996 | ": %s: no num_grat_arp value specified.\n", | |
997 | bond->dev->name); | |
998 | ret = -EINVAL; | |
999 | goto out; | |
1000 | } | |
1001 | if (new_value < 0 || new_value > 255) { | |
1002 | printk(KERN_ERR DRV_NAME | |
1003 | ": %s: Invalid num_grat_arp value %d not in range 0-255; rejected.\n", | |
1004 | bond->dev->name, new_value); | |
1005 | ret = -EINVAL; | |
1006 | goto out; | |
1007 | } else { | |
1008 | bond->params.num_grat_arp = new_value; | |
1009 | } | |
1010 | out: | |
1011 | return ret; | |
1012 | } | |
1013 | static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR, bonding_show_n_grat_arp, bonding_store_n_grat_arp); | |
305d552a BH |
1014 | |
1015 | /* | |
1016 | * Show and set the number of unsolicted NA's to send after a failover event. | |
1017 | */ | |
1018 | static ssize_t bonding_show_n_unsol_na(struct device *d, | |
1019 | struct device_attribute *attr, | |
1020 | char *buf) | |
1021 | { | |
1022 | struct bonding *bond = to_bond(d); | |
1023 | ||
1024 | return sprintf(buf, "%d\n", bond->params.num_unsol_na); | |
1025 | } | |
1026 | ||
1027 | static ssize_t bonding_store_n_unsol_na(struct device *d, | |
1028 | struct device_attribute *attr, | |
1029 | const char *buf, size_t count) | |
1030 | { | |
1031 | int new_value, ret = count; | |
1032 | struct bonding *bond = to_bond(d); | |
1033 | ||
1034 | if (sscanf(buf, "%d", &new_value) != 1) { | |
1035 | printk(KERN_ERR DRV_NAME | |
1036 | ": %s: no num_unsol_na value specified.\n", | |
1037 | bond->dev->name); | |
1038 | ret = -EINVAL; | |
1039 | goto out; | |
1040 | } | |
1041 | if (new_value < 0 || new_value > 255) { | |
1042 | printk(KERN_ERR DRV_NAME | |
1043 | ": %s: Invalid num_unsol_na value %d not in range 0-255; rejected.\n", | |
1044 | bond->dev->name, new_value); | |
1045 | ret = -EINVAL; | |
1046 | goto out; | |
1047 | } else { | |
1048 | bond->params.num_unsol_na = new_value; | |
1049 | } | |
1050 | out: | |
1051 | return ret; | |
1052 | } | |
1053 | static DEVICE_ATTR(num_unsol_na, S_IRUGO | S_IWUSR, bonding_show_n_unsol_na, bonding_store_n_unsol_na); | |
1054 | ||
b76cdba9 MW |
1055 | /* |
1056 | * Show and set the MII monitor interval. There are two tricky bits | |
1057 | * here. First, if MII monitoring is activated, then we must disable | |
1058 | * ARP monitoring. Second, if the timer isn't running, we must | |
1059 | * start it. | |
1060 | */ | |
43cb76d9 GKH |
1061 | static ssize_t bonding_show_miimon(struct device *d, |
1062 | struct device_attribute *attr, | |
1063 | char *buf) | |
b76cdba9 | 1064 | { |
43cb76d9 | 1065 | struct bonding *bond = to_bond(d); |
b76cdba9 | 1066 | |
7bd46508 | 1067 | return sprintf(buf, "%d\n", bond->params.miimon); |
b76cdba9 MW |
1068 | } |
1069 | ||
43cb76d9 GKH |
1070 | static ssize_t bonding_store_miimon(struct device *d, |
1071 | struct device_attribute *attr, | |
1072 | const char *buf, size_t count) | |
b76cdba9 MW |
1073 | { |
1074 | int new_value, ret = count; | |
43cb76d9 | 1075 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1076 | |
1077 | if (sscanf(buf, "%d", &new_value) != 1) { | |
1078 | printk(KERN_ERR DRV_NAME | |
1079 | ": %s: no miimon value specified.\n", | |
1080 | bond->dev->name); | |
1081 | ret = -EINVAL; | |
1082 | goto out; | |
1083 | } | |
1084 | if (new_value < 0) { | |
1085 | printk(KERN_ERR DRV_NAME | |
1086 | ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n", | |
1087 | bond->dev->name, new_value, 1, INT_MAX); | |
1088 | ret = -EINVAL; | |
1089 | goto out; | |
1090 | } else { | |
1091 | printk(KERN_INFO DRV_NAME | |
1092 | ": %s: Setting MII monitoring interval to %d.\n", | |
1093 | bond->dev->name, new_value); | |
1094 | bond->params.miimon = new_value; | |
1095 | if(bond->params.updelay) | |
1096 | printk(KERN_INFO DRV_NAME | |
1097 | ": %s: Note: Updating updelay (to %d) " | |
1098 | "since it is a multiple of the miimon value.\n", | |
1099 | bond->dev->name, | |
1100 | bond->params.updelay * bond->params.miimon); | |
1101 | if(bond->params.downdelay) | |
1102 | printk(KERN_INFO DRV_NAME | |
1103 | ": %s: Note: Updating downdelay (to %d) " | |
1104 | "since it is a multiple of the miimon value.\n", | |
1105 | bond->dev->name, | |
1106 | bond->params.downdelay * bond->params.miimon); | |
1107 | if (bond->params.arp_interval) { | |
1108 | printk(KERN_INFO DRV_NAME | |
1109 | ": %s: MII monitoring cannot be used with " | |
1110 | "ARP monitoring. Disabling ARP monitoring...\n", | |
1111 | bond->dev->name); | |
1112 | bond->params.arp_interval = 0; | |
6cf3f41e | 1113 | bond->dev->priv_flags &= ~IFF_MASTER_ARPMON; |
f5b2b966 JV |
1114 | if (bond->params.arp_validate) { |
1115 | bond_unregister_arp(bond); | |
1116 | bond->params.arp_validate = | |
1117 | BOND_ARP_VALIDATE_NONE; | |
1118 | } | |
1b76b316 JV |
1119 | if (delayed_work_pending(&bond->arp_work)) { |
1120 | cancel_delayed_work(&bond->arp_work); | |
1121 | flush_workqueue(bond->wq); | |
b76cdba9 MW |
1122 | } |
1123 | } | |
1124 | ||
1125 | if (bond->dev->flags & IFF_UP) { | |
1126 | /* If the interface is up, we may need to fire off | |
1127 | * the MII timer. If the interface is down, the | |
1128 | * timer will get fired off when the open function | |
1129 | * is called. | |
1130 | */ | |
1b76b316 JV |
1131 | if (!delayed_work_pending(&bond->mii_work)) { |
1132 | INIT_DELAYED_WORK(&bond->mii_work, | |
1133 | bond_mii_monitor); | |
1134 | queue_delayed_work(bond->wq, | |
1135 | &bond->mii_work, 0); | |
b76cdba9 MW |
1136 | } |
1137 | } | |
1138 | } | |
1139 | out: | |
1140 | return ret; | |
1141 | } | |
43cb76d9 | 1142 | static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR, bonding_show_miimon, bonding_store_miimon); |
b76cdba9 MW |
1143 | |
1144 | /* | |
1145 | * Show and set the primary slave. The store function is much | |
1146 | * simpler than bonding_store_slaves function because it only needs to | |
1147 | * handle one interface name. | |
1148 | * The bond must be a mode that supports a primary for this be | |
1149 | * set. | |
1150 | */ | |
43cb76d9 GKH |
1151 | static ssize_t bonding_show_primary(struct device *d, |
1152 | struct device_attribute *attr, | |
1153 | char *buf) | |
b76cdba9 MW |
1154 | { |
1155 | int count = 0; | |
43cb76d9 | 1156 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1157 | |
1158 | if (bond->primary_slave) | |
7bd46508 | 1159 | count = sprintf(buf, "%s\n", bond->primary_slave->dev->name); |
b76cdba9 MW |
1160 | |
1161 | return count; | |
1162 | } | |
1163 | ||
43cb76d9 GKH |
1164 | static ssize_t bonding_store_primary(struct device *d, |
1165 | struct device_attribute *attr, | |
1166 | const char *buf, size_t count) | |
b76cdba9 MW |
1167 | { |
1168 | int i; | |
1169 | struct slave *slave; | |
43cb76d9 | 1170 | struct bonding *bond = to_bond(d); |
b76cdba9 | 1171 | |
e934dd78 JV |
1172 | rtnl_lock(); |
1173 | read_lock(&bond->lock); | |
1174 | write_lock_bh(&bond->curr_slave_lock); | |
1175 | ||
b76cdba9 MW |
1176 | if (!USES_PRIMARY(bond->params.mode)) { |
1177 | printk(KERN_INFO DRV_NAME | |
1178 | ": %s: Unable to set primary slave; %s is in mode %d\n", | |
1179 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1180 | } else { | |
1181 | bond_for_each_slave(bond, slave, i) { | |
1182 | if (strnicmp | |
1183 | (slave->dev->name, buf, | |
1184 | strlen(slave->dev->name)) == 0) { | |
1185 | printk(KERN_INFO DRV_NAME | |
1186 | ": %s: Setting %s as primary slave.\n", | |
1187 | bond->dev->name, slave->dev->name); | |
1188 | bond->primary_slave = slave; | |
1189 | bond_select_active_slave(bond); | |
1190 | goto out; | |
1191 | } | |
1192 | } | |
1193 | ||
1194 | /* if we got here, then we didn't match the name of any slave */ | |
1195 | ||
1196 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1197 | printk(KERN_INFO DRV_NAME | |
1198 | ": %s: Setting primary slave to None.\n", | |
1199 | bond->dev->name); | |
3418db7c | 1200 | bond->primary_slave = NULL; |
b76cdba9 MW |
1201 | bond_select_active_slave(bond); |
1202 | } else { | |
1203 | printk(KERN_INFO DRV_NAME | |
1204 | ": %s: Unable to set %.*s as primary slave as it is not a slave.\n", | |
1205 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1206 | } | |
1207 | } | |
1208 | out: | |
e934dd78 JV |
1209 | write_unlock_bh(&bond->curr_slave_lock); |
1210 | read_unlock(&bond->lock); | |
6603a6f2 JV |
1211 | rtnl_unlock(); |
1212 | ||
b76cdba9 MW |
1213 | return count; |
1214 | } | |
43cb76d9 | 1215 | static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, bonding_show_primary, bonding_store_primary); |
b76cdba9 MW |
1216 | |
1217 | /* | |
1218 | * Show and set the use_carrier flag. | |
1219 | */ | |
43cb76d9 GKH |
1220 | static ssize_t bonding_show_carrier(struct device *d, |
1221 | struct device_attribute *attr, | |
1222 | char *buf) | |
b76cdba9 | 1223 | { |
43cb76d9 | 1224 | struct bonding *bond = to_bond(d); |
b76cdba9 | 1225 | |
7bd46508 | 1226 | return sprintf(buf, "%d\n", bond->params.use_carrier); |
b76cdba9 MW |
1227 | } |
1228 | ||
43cb76d9 GKH |
1229 | static ssize_t bonding_store_carrier(struct device *d, |
1230 | struct device_attribute *attr, | |
1231 | const char *buf, size_t count) | |
b76cdba9 MW |
1232 | { |
1233 | int new_value, ret = count; | |
43cb76d9 | 1234 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1235 | |
1236 | ||
1237 | if (sscanf(buf, "%d", &new_value) != 1) { | |
1238 | printk(KERN_ERR DRV_NAME | |
1239 | ": %s: no use_carrier value specified.\n", | |
1240 | bond->dev->name); | |
1241 | ret = -EINVAL; | |
1242 | goto out; | |
1243 | } | |
1244 | if ((new_value == 0) || (new_value == 1)) { | |
1245 | bond->params.use_carrier = new_value; | |
1246 | printk(KERN_INFO DRV_NAME ": %s: Setting use_carrier to %d.\n", | |
1247 | bond->dev->name, new_value); | |
1248 | } else { | |
1249 | printk(KERN_INFO DRV_NAME | |
1250 | ": %s: Ignoring invalid use_carrier value %d.\n", | |
1251 | bond->dev->name, new_value); | |
1252 | } | |
1253 | out: | |
1254 | return count; | |
1255 | } | |
43cb76d9 | 1256 | static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, bonding_show_carrier, bonding_store_carrier); |
b76cdba9 MW |
1257 | |
1258 | ||
1259 | /* | |
1260 | * Show and set currently active_slave. | |
1261 | */ | |
43cb76d9 GKH |
1262 | static ssize_t bonding_show_active_slave(struct device *d, |
1263 | struct device_attribute *attr, | |
1264 | char *buf) | |
b76cdba9 MW |
1265 | { |
1266 | struct slave *curr; | |
43cb76d9 | 1267 | struct bonding *bond = to_bond(d); |
16cd0160 | 1268 | int count = 0; |
b76cdba9 | 1269 | |
b76cdba9 MW |
1270 | read_lock(&bond->curr_slave_lock); |
1271 | curr = bond->curr_active_slave; | |
1272 | read_unlock(&bond->curr_slave_lock); | |
1273 | ||
1274 | if (USES_PRIMARY(bond->params.mode) && curr) | |
7bd46508 | 1275 | count = sprintf(buf, "%s\n", curr->dev->name); |
b76cdba9 MW |
1276 | return count; |
1277 | } | |
1278 | ||
43cb76d9 GKH |
1279 | static ssize_t bonding_store_active_slave(struct device *d, |
1280 | struct device_attribute *attr, | |
1281 | const char *buf, size_t count) | |
b76cdba9 MW |
1282 | { |
1283 | int i; | |
1284 | struct slave *slave; | |
1285 | struct slave *old_active = NULL; | |
1286 | struct slave *new_active = NULL; | |
43cb76d9 | 1287 | struct bonding *bond = to_bond(d); |
b76cdba9 | 1288 | |
1466a219 | 1289 | rtnl_lock(); |
e934dd78 JV |
1290 | read_lock(&bond->lock); |
1291 | write_lock_bh(&bond->curr_slave_lock); | |
1466a219 | 1292 | |
b76cdba9 MW |
1293 | if (!USES_PRIMARY(bond->params.mode)) { |
1294 | printk(KERN_INFO DRV_NAME | |
1295 | ": %s: Unable to change active slave; %s is in mode %d\n", | |
1296 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1297 | } else { | |
1298 | bond_for_each_slave(bond, slave, i) { | |
1299 | if (strnicmp | |
1300 | (slave->dev->name, buf, | |
1301 | strlen(slave->dev->name)) == 0) { | |
1302 | old_active = bond->curr_active_slave; | |
1303 | new_active = slave; | |
a50d8de2 | 1304 | if (new_active == old_active) { |
b76cdba9 MW |
1305 | /* do nothing */ |
1306 | printk(KERN_INFO DRV_NAME | |
1307 | ": %s: %s is already the current active slave.\n", | |
1308 | bond->dev->name, slave->dev->name); | |
1309 | goto out; | |
1310 | } | |
1311 | else { | |
1312 | if ((new_active) && | |
1313 | (old_active) && | |
1314 | (new_active->link == BOND_LINK_UP) && | |
1315 | IS_UP(new_active->dev)) { | |
1316 | printk(KERN_INFO DRV_NAME | |
1317 | ": %s: Setting %s as active slave.\n", | |
1318 | bond->dev->name, slave->dev->name); | |
1319 | bond_change_active_slave(bond, new_active); | |
1320 | } | |
1321 | else { | |
1322 | printk(KERN_INFO DRV_NAME | |
1323 | ": %s: Could not set %s as active slave; " | |
1324 | "either %s is down or the link is down.\n", | |
1325 | bond->dev->name, slave->dev->name, | |
1326 | slave->dev->name); | |
1327 | } | |
1328 | goto out; | |
1329 | } | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | /* if we got here, then we didn't match the name of any slave */ | |
1334 | ||
1335 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1336 | printk(KERN_INFO DRV_NAME | |
1337 | ": %s: Setting active slave to None.\n", | |
1338 | bond->dev->name); | |
3418db7c | 1339 | bond->primary_slave = NULL; |
b76cdba9 MW |
1340 | bond_select_active_slave(bond); |
1341 | } else { | |
1342 | printk(KERN_INFO DRV_NAME | |
1343 | ": %s: Unable to set %.*s as active slave as it is not a slave.\n", | |
1344 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1345 | } | |
1346 | } | |
1347 | out: | |
e934dd78 JV |
1348 | write_unlock_bh(&bond->curr_slave_lock); |
1349 | read_unlock(&bond->lock); | |
6603a6f2 JV |
1350 | rtnl_unlock(); |
1351 | ||
b76cdba9 MW |
1352 | return count; |
1353 | ||
1354 | } | |
43cb76d9 | 1355 | static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, bonding_show_active_slave, bonding_store_active_slave); |
b76cdba9 MW |
1356 | |
1357 | ||
1358 | /* | |
1359 | * Show link status of the bond interface. | |
1360 | */ | |
43cb76d9 GKH |
1361 | static ssize_t bonding_show_mii_status(struct device *d, |
1362 | struct device_attribute *attr, | |
1363 | char *buf) | |
b76cdba9 MW |
1364 | { |
1365 | struct slave *curr; | |
43cb76d9 | 1366 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1367 | |
1368 | read_lock(&bond->curr_slave_lock); | |
1369 | curr = bond->curr_active_slave; | |
1370 | read_unlock(&bond->curr_slave_lock); | |
1371 | ||
7bd46508 | 1372 | return sprintf(buf, "%s\n", (curr) ? "up" : "down"); |
b76cdba9 | 1373 | } |
43cb76d9 | 1374 | static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL); |
b76cdba9 MW |
1375 | |
1376 | ||
1377 | /* | |
1378 | * Show current 802.3ad aggregator ID. | |
1379 | */ | |
43cb76d9 GKH |
1380 | static ssize_t bonding_show_ad_aggregator(struct device *d, |
1381 | struct device_attribute *attr, | |
1382 | char *buf) | |
b76cdba9 MW |
1383 | { |
1384 | int count = 0; | |
43cb76d9 | 1385 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1386 | |
1387 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1388 | struct ad_info ad_info; | |
7bd46508 | 1389 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id); |
b76cdba9 | 1390 | } |
b76cdba9 MW |
1391 | |
1392 | return count; | |
1393 | } | |
43cb76d9 | 1394 | static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL); |
b76cdba9 MW |
1395 | |
1396 | ||
1397 | /* | |
1398 | * Show number of active 802.3ad ports. | |
1399 | */ | |
43cb76d9 GKH |
1400 | static ssize_t bonding_show_ad_num_ports(struct device *d, |
1401 | struct device_attribute *attr, | |
1402 | char *buf) | |
b76cdba9 MW |
1403 | { |
1404 | int count = 0; | |
43cb76d9 | 1405 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1406 | |
1407 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1408 | struct ad_info ad_info; | |
7bd46508 | 1409 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports); |
b76cdba9 | 1410 | } |
b76cdba9 MW |
1411 | |
1412 | return count; | |
1413 | } | |
43cb76d9 | 1414 | static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL); |
b76cdba9 MW |
1415 | |
1416 | ||
1417 | /* | |
1418 | * Show current 802.3ad actor key. | |
1419 | */ | |
43cb76d9 GKH |
1420 | static ssize_t bonding_show_ad_actor_key(struct device *d, |
1421 | struct device_attribute *attr, | |
1422 | char *buf) | |
b76cdba9 MW |
1423 | { |
1424 | int count = 0; | |
43cb76d9 | 1425 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1426 | |
1427 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1428 | struct ad_info ad_info; | |
7bd46508 | 1429 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key); |
b76cdba9 | 1430 | } |
b76cdba9 MW |
1431 | |
1432 | return count; | |
1433 | } | |
43cb76d9 | 1434 | static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL); |
b76cdba9 MW |
1435 | |
1436 | ||
1437 | /* | |
1438 | * Show current 802.3ad partner key. | |
1439 | */ | |
43cb76d9 GKH |
1440 | static ssize_t bonding_show_ad_partner_key(struct device *d, |
1441 | struct device_attribute *attr, | |
1442 | char *buf) | |
b76cdba9 MW |
1443 | { |
1444 | int count = 0; | |
43cb76d9 | 1445 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1446 | |
1447 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1448 | struct ad_info ad_info; | |
7bd46508 | 1449 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key); |
b76cdba9 | 1450 | } |
b76cdba9 MW |
1451 | |
1452 | return count; | |
1453 | } | |
43cb76d9 | 1454 | static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL); |
b76cdba9 MW |
1455 | |
1456 | ||
1457 | /* | |
1458 | * Show current 802.3ad partner mac. | |
1459 | */ | |
43cb76d9 GKH |
1460 | static ssize_t bonding_show_ad_partner_mac(struct device *d, |
1461 | struct device_attribute *attr, | |
1462 | char *buf) | |
b76cdba9 MW |
1463 | { |
1464 | int count = 0; | |
43cb76d9 | 1465 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1466 | |
1467 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1468 | struct ad_info ad_info; | |
1469 | if (!bond_3ad_get_active_agg_info(bond, &ad_info)) { | |
e174961c | 1470 | count = sprintf(buf, "%pM\n", ad_info.partner_system); |
b76cdba9 MW |
1471 | } |
1472 | } | |
b76cdba9 MW |
1473 | |
1474 | return count; | |
1475 | } | |
43cb76d9 | 1476 | static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL); |
b76cdba9 MW |
1477 | |
1478 | ||
1479 | ||
1480 | static struct attribute *per_bond_attrs[] = { | |
43cb76d9 GKH |
1481 | &dev_attr_slaves.attr, |
1482 | &dev_attr_mode.attr, | |
dd957c57 | 1483 | &dev_attr_fail_over_mac.attr, |
43cb76d9 GKH |
1484 | &dev_attr_arp_validate.attr, |
1485 | &dev_attr_arp_interval.attr, | |
1486 | &dev_attr_arp_ip_target.attr, | |
1487 | &dev_attr_downdelay.attr, | |
1488 | &dev_attr_updelay.attr, | |
1489 | &dev_attr_lacp_rate.attr, | |
fd989c83 | 1490 | &dev_attr_ad_select.attr, |
43cb76d9 | 1491 | &dev_attr_xmit_hash_policy.attr, |
7893b249 | 1492 | &dev_attr_num_grat_arp.attr, |
305d552a | 1493 | &dev_attr_num_unsol_na.attr, |
43cb76d9 GKH |
1494 | &dev_attr_miimon.attr, |
1495 | &dev_attr_primary.attr, | |
1496 | &dev_attr_use_carrier.attr, | |
1497 | &dev_attr_active_slave.attr, | |
1498 | &dev_attr_mii_status.attr, | |
1499 | &dev_attr_ad_aggregator.attr, | |
1500 | &dev_attr_ad_num_ports.attr, | |
1501 | &dev_attr_ad_actor_key.attr, | |
1502 | &dev_attr_ad_partner_key.attr, | |
1503 | &dev_attr_ad_partner_mac.attr, | |
b76cdba9 MW |
1504 | NULL, |
1505 | }; | |
1506 | ||
1507 | static struct attribute_group bonding_group = { | |
1508 | .name = "bonding", | |
1509 | .attrs = per_bond_attrs, | |
1510 | }; | |
1511 | ||
1512 | /* | |
1513 | * Initialize sysfs. This sets up the bonding_masters file in | |
1514 | * /sys/class/net. | |
1515 | */ | |
1516 | int bond_create_sysfs(void) | |
1517 | { | |
b8a9787e | 1518 | int ret; |
b76cdba9 | 1519 | |
b8a9787e | 1520 | ret = netdev_class_create_file(&class_attr_bonding_masters); |
877cbd36 JV |
1521 | /* |
1522 | * Permit multiple loads of the module by ignoring failures to | |
1523 | * create the bonding_masters sysfs file. Bonding devices | |
1524 | * created by second or subsequent loads of the module will | |
1525 | * not be listed in, or controllable by, bonding_masters, but | |
1526 | * will have the usual "bonding" sysfs directory. | |
1527 | * | |
1528 | * This is done to preserve backwards compatibility for | |
1529 | * initscripts/sysconfig, which load bonding multiple times to | |
1530 | * configure multiple bonding devices. | |
1531 | */ | |
1532 | if (ret == -EEXIST) { | |
38d2f38b SH |
1533 | /* Is someone being kinky and naming a device bonding_master? */ |
1534 | if (__dev_get_by_name(&init_net, | |
1535 | class_attr_bonding_masters.attr.name)) | |
1536 | printk(KERN_ERR | |
1537 | "network device named %s already exists in sysfs", | |
1538 | class_attr_bonding_masters.attr.name); | |
877cbd36 | 1539 | } |
b76cdba9 MW |
1540 | |
1541 | return ret; | |
1542 | ||
1543 | } | |
1544 | ||
1545 | /* | |
1546 | * Remove /sys/class/net/bonding_masters. | |
1547 | */ | |
1548 | void bond_destroy_sysfs(void) | |
1549 | { | |
b8a9787e | 1550 | netdev_class_remove_file(&class_attr_bonding_masters); |
b76cdba9 MW |
1551 | } |
1552 | ||
1553 | /* | |
1554 | * Initialize sysfs for each bond. This sets up and registers | |
1555 | * the 'bondctl' directory for each individual bond under /sys/class/net. | |
1556 | */ | |
1557 | int bond_create_sysfs_entry(struct bonding *bond) | |
1558 | { | |
1559 | struct net_device *dev = bond->dev; | |
1560 | int err; | |
1561 | ||
43cb76d9 | 1562 | err = sysfs_create_group(&(dev->dev.kobj), &bonding_group); |
b76cdba9 MW |
1563 | if (err) { |
1564 | printk(KERN_EMERG "eek! didn't create group!\n"); | |
1565 | } | |
1566 | ||
1567 | if (expected_refcount < 1) | |
43cb76d9 | 1568 | expected_refcount = atomic_read(&bond->dev->dev.kobj.kref.refcount); |
b76cdba9 MW |
1569 | |
1570 | return err; | |
1571 | } | |
1572 | /* | |
1573 | * Remove sysfs entries for each bond. | |
1574 | */ | |
1575 | void bond_destroy_sysfs_entry(struct bonding *bond) | |
1576 | { | |
1577 | struct net_device *dev = bond->dev; | |
1578 | ||
43cb76d9 | 1579 | sysfs_remove_group(&(dev->dev.kobj), &bonding_group); |
b76cdba9 MW |
1580 | } |
1581 |