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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> | |
34 | #include <linux/string.h> | |
35 | #include <linux/ctype.h> | |
36 | #include <linux/inet.h> | |
37 | #include <linux/rtnetlink.h> | |
881d966b | 38 | #include <net/net_namespace.h> |
b76cdba9 MW |
39 | |
40 | /* #define BONDING_DEBUG 1 */ | |
41 | #include "bonding.h" | |
43cb76d9 | 42 | #define to_dev(obj) container_of(obj,struct device,kobj) |
b76cdba9 MW |
43 | #define to_bond(cd) ((struct bonding *)(to_net_dev(cd)->priv)) |
44 | ||
45 | /*---------------------------- Declarations -------------------------------*/ | |
46 | ||
47 | ||
48 | extern struct list_head bond_dev_list; | |
49 | extern struct bond_params bonding_defaults; | |
50 | extern struct bond_parm_tbl bond_mode_tbl[]; | |
51 | extern struct bond_parm_tbl bond_lacp_tbl[]; | |
52 | extern struct bond_parm_tbl xmit_hashtype_tbl[]; | |
f5b2b966 | 53 | extern struct bond_parm_tbl arp_validate_tbl[]; |
b76cdba9 MW |
54 | |
55 | static int expected_refcount = -1; | |
56 | static struct class *netdev_class; | |
57 | /*--------------------------- Data Structures -----------------------------*/ | |
58 | ||
59 | /* Bonding sysfs lock. Why can't we just use the subsytem lock? | |
60 | * Because kobject_register tries to acquire the subsystem lock. If | |
61 | * we already hold the lock (which we would if the user was creating | |
62 | * a new bond through the sysfs interface), we deadlock. | |
63 | * This lock is only needed when deleting a bond - we need to make sure | |
64 | * that we don't collide with an ongoing ioctl. | |
65 | */ | |
66 | ||
67 | struct rw_semaphore bonding_rwsem; | |
68 | ||
69 | ||
70 | ||
71 | ||
72 | /*------------------------------ Functions --------------------------------*/ | |
73 | ||
74 | /* | |
75 | * "show" function for the bond_masters attribute. | |
76 | * The class parameter is ignored. | |
77 | */ | |
78 | static ssize_t bonding_show_bonds(struct class *cls, char *buffer) | |
79 | { | |
80 | int res = 0; | |
81 | struct bonding *bond; | |
82 | ||
83 | down_read(&(bonding_rwsem)); | |
84 | ||
85 | list_for_each_entry(bond, &bond_dev_list, bond_list) { | |
86 | if (res > (PAGE_SIZE - IFNAMSIZ)) { | |
87 | /* not enough space for another interface name */ | |
88 | if ((PAGE_SIZE - res) > 10) | |
89 | res = PAGE_SIZE - 10; | |
90 | res += sprintf(buffer + res, "++more++"); | |
91 | break; | |
92 | } | |
93 | res += sprintf(buffer + res, "%s ", | |
94 | bond->dev->name); | |
95 | } | |
96 | res += sprintf(buffer + res, "\n"); | |
97 | res++; | |
98 | up_read(&(bonding_rwsem)); | |
99 | return res; | |
100 | } | |
101 | ||
102 | /* | |
103 | * "store" function for the bond_masters attribute. This is what | |
104 | * creates and deletes entire bonds. | |
105 | * | |
106 | * The class parameter is ignored. | |
107 | * | |
108 | */ | |
109 | ||
110 | static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t count) | |
111 | { | |
112 | char command[IFNAMSIZ + 1] = {0, }; | |
113 | char *ifname; | |
114 | int res = count; | |
115 | struct bonding *bond; | |
116 | struct bonding *nxt; | |
117 | ||
118 | down_write(&(bonding_rwsem)); | |
119 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ | |
120 | ifname = command + 1; | |
121 | if ((strlen(command) <= 1) || | |
122 | !dev_valid_name(ifname)) | |
123 | goto err_no_cmd; | |
124 | ||
125 | if (command[0] == '+') { | |
126 | ||
127 | /* Check to see if the bond already exists. */ | |
128 | list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) | |
129 | if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { | |
130 | printk(KERN_ERR DRV_NAME | |
131 | ": cannot add bond %s; it already exists\n", | |
132 | ifname); | |
133 | res = -EPERM; | |
134 | goto out; | |
135 | } | |
136 | ||
137 | printk(KERN_INFO DRV_NAME | |
138 | ": %s is being created...\n", ifname); | |
139 | if (bond_create(ifname, &bonding_defaults, &bond)) { | |
140 | printk(KERN_INFO DRV_NAME | |
141 | ": %s interface already exists. Bond creation failed.\n", | |
142 | ifname); | |
143 | res = -EPERM; | |
144 | } | |
145 | goto out; | |
146 | } | |
147 | ||
148 | if (command[0] == '-') { | |
149 | list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) | |
150 | if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { | |
151 | rtnl_lock(); | |
152 | /* check the ref count on the bond's kobject. | |
153 | * If it's > expected, then there's a file open, | |
154 | * and we have to fail. | |
155 | */ | |
43cb76d9 | 156 | if (atomic_read(&bond->dev->dev.kobj.kref.refcount) |
b76cdba9 MW |
157 | > expected_refcount){ |
158 | rtnl_unlock(); | |
159 | printk(KERN_INFO DRV_NAME | |
160 | ": Unable remove bond %s due to open references.\n", | |
161 | ifname); | |
162 | res = -EPERM; | |
163 | goto out; | |
164 | } | |
165 | printk(KERN_INFO DRV_NAME | |
166 | ": %s is being deleted...\n", | |
167 | bond->dev->name); | |
b76cdba9 MW |
168 | bond_deinit(bond->dev); |
169 | bond_destroy_sysfs_entry(bond); | |
3201e656 | 170 | unregister_netdevice(bond->dev); |
b76cdba9 MW |
171 | rtnl_unlock(); |
172 | goto out; | |
173 | } | |
174 | ||
175 | printk(KERN_ERR DRV_NAME | |
176 | ": unable to delete non-existent bond %s\n", ifname); | |
177 | res = -ENODEV; | |
178 | goto out; | |
179 | } | |
180 | ||
181 | err_no_cmd: | |
182 | printk(KERN_ERR DRV_NAME | |
183 | ": no command found in bonding_masters. Use +ifname or -ifname.\n"); | |
184 | res = -EPERM; | |
185 | ||
186 | /* Always return either count or an error. If you return 0, you'll | |
187 | * get called forever, which is bad. | |
188 | */ | |
189 | out: | |
190 | up_write(&(bonding_rwsem)); | |
191 | return res; | |
192 | } | |
193 | /* class attribute for bond_masters file. This ends up in /sys/class/net */ | |
194 | static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO, | |
195 | bonding_show_bonds, bonding_store_bonds); | |
196 | ||
197 | int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave) | |
198 | { | |
199 | char linkname[IFNAMSIZ+7]; | |
200 | int ret = 0; | |
201 | ||
202 | /* first, create a link from the slave back to the master */ | |
43cb76d9 | 203 | ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj), |
b76cdba9 MW |
204 | "master"); |
205 | if (ret) | |
206 | return ret; | |
207 | /* next, create a link from the master to the slave */ | |
208 | sprintf(linkname,"slave_%s",slave->name); | |
43cb76d9 | 209 | ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj), |
b76cdba9 MW |
210 | linkname); |
211 | return ret; | |
212 | ||
213 | } | |
214 | ||
215 | void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave) | |
216 | { | |
217 | char linkname[IFNAMSIZ+7]; | |
218 | ||
43cb76d9 | 219 | sysfs_remove_link(&(slave->dev.kobj), "master"); |
b76cdba9 | 220 | sprintf(linkname,"slave_%s",slave->name); |
43cb76d9 | 221 | sysfs_remove_link(&(master->dev.kobj), linkname); |
b76cdba9 MW |
222 | } |
223 | ||
224 | ||
225 | /* | |
226 | * Show the slaves in the current bond. | |
227 | */ | |
43cb76d9 GKH |
228 | static ssize_t bonding_show_slaves(struct device *d, |
229 | struct device_attribute *attr, char *buf) | |
b76cdba9 MW |
230 | { |
231 | struct slave *slave; | |
232 | int i, res = 0; | |
43cb76d9 | 233 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
234 | |
235 | read_lock_bh(&bond->lock); | |
236 | bond_for_each_slave(bond, slave, i) { | |
237 | if (res > (PAGE_SIZE - IFNAMSIZ)) { | |
238 | /* not enough space for another interface name */ | |
239 | if ((PAGE_SIZE - res) > 10) | |
240 | res = PAGE_SIZE - 10; | |
241 | res += sprintf(buf + res, "++more++"); | |
242 | break; | |
243 | } | |
244 | res += sprintf(buf + res, "%s ", slave->dev->name); | |
245 | } | |
246 | read_unlock_bh(&bond->lock); | |
247 | res += sprintf(buf + res, "\n"); | |
248 | res++; | |
249 | return res; | |
250 | } | |
251 | ||
252 | /* | |
253 | * Set the slaves in the current bond. The bond interface must be | |
254 | * up for this to succeed. | |
255 | * This function is largely the same flow as bonding_update_bonds(). | |
256 | */ | |
43cb76d9 GKH |
257 | static ssize_t bonding_store_slaves(struct device *d, |
258 | struct device_attribute *attr, | |
259 | const char *buffer, size_t count) | |
b76cdba9 MW |
260 | { |
261 | char command[IFNAMSIZ + 1] = { 0, }; | |
262 | char *ifname; | |
263 | int i, res, found, ret = count; | |
264 | struct slave *slave; | |
3418db7c | 265 | struct net_device *dev = NULL; |
43cb76d9 | 266 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
267 | |
268 | /* Quick sanity check -- is the bond interface up? */ | |
269 | if (!(bond->dev->flags & IFF_UP)) { | |
270 | printk(KERN_ERR DRV_NAME | |
271 | ": %s: Unable to update slaves because interface is down.\n", | |
272 | bond->dev->name); | |
273 | ret = -EPERM; | |
274 | goto out; | |
275 | } | |
276 | ||
277 | /* Note: We can't hold bond->lock here, as bond_create grabs it. */ | |
278 | ||
279 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ | |
280 | ifname = command + 1; | |
281 | if ((strlen(command) <= 1) || | |
282 | !dev_valid_name(ifname)) | |
283 | goto err_no_cmd; | |
284 | ||
285 | if (command[0] == '+') { | |
286 | ||
287 | /* Got a slave name in ifname. Is it already in the list? */ | |
288 | found = 0; | |
289 | read_lock_bh(&bond->lock); | |
290 | bond_for_each_slave(bond, slave, i) | |
291 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
292 | printk(KERN_ERR DRV_NAME | |
293 | ": %s: Interface %s is already enslaved!\n", | |
294 | bond->dev->name, ifname); | |
295 | ret = -EPERM; | |
296 | read_unlock_bh(&bond->lock); | |
297 | goto out; | |
298 | } | |
299 | ||
300 | read_unlock_bh(&bond->lock); | |
301 | printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n", | |
302 | bond->dev->name, ifname); | |
881d966b | 303 | dev = dev_get_by_name(&init_net, ifname); |
b76cdba9 MW |
304 | if (!dev) { |
305 | printk(KERN_INFO DRV_NAME | |
306 | ": %s: Interface %s does not exist!\n", | |
307 | bond->dev->name, ifname); | |
308 | ret = -EPERM; | |
309 | goto out; | |
310 | } | |
311 | else | |
312 | dev_put(dev); | |
313 | ||
314 | if (dev->flags & IFF_UP) { | |
315 | printk(KERN_ERR DRV_NAME | |
316 | ": %s: Error: Unable to enslave %s " | |
317 | "because it is already up.\n", | |
318 | bond->dev->name, dev->name); | |
319 | ret = -EPERM; | |
320 | goto out; | |
321 | } | |
322 | /* If this is the first slave, then we need to set | |
323 | the master's hardware address to be the same as the | |
324 | slave's. */ | |
325 | if (!(*((u32 *) & (bond->dev->dev_addr[0])))) { | |
326 | memcpy(bond->dev->dev_addr, dev->dev_addr, | |
327 | dev->addr_len); | |
328 | } | |
329 | ||
330 | /* Set the slave's MTU to match the bond */ | |
331 | if (dev->mtu != bond->dev->mtu) { | |
332 | if (dev->change_mtu) { | |
333 | res = dev->change_mtu(dev, | |
334 | bond->dev->mtu); | |
335 | if (res) { | |
336 | ret = res; | |
337 | goto out; | |
338 | } | |
339 | } else { | |
340 | dev->mtu = bond->dev->mtu; | |
341 | } | |
342 | } | |
343 | rtnl_lock(); | |
344 | res = bond_enslave(bond->dev, dev); | |
345 | rtnl_unlock(); | |
346 | if (res) { | |
347 | ret = res; | |
348 | } | |
349 | goto out; | |
350 | } | |
351 | ||
352 | if (command[0] == '-') { | |
353 | dev = NULL; | |
354 | bond_for_each_slave(bond, slave, i) | |
355 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
356 | dev = slave->dev; | |
357 | break; | |
358 | } | |
359 | if (dev) { | |
360 | printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n", | |
361 | bond->dev->name, dev->name); | |
362 | rtnl_lock(); | |
363 | res = bond_release(bond->dev, dev); | |
364 | rtnl_unlock(); | |
365 | if (res) { | |
366 | ret = res; | |
367 | goto out; | |
368 | } | |
369 | /* set the slave MTU to the default */ | |
370 | if (dev->change_mtu) { | |
371 | dev->change_mtu(dev, 1500); | |
372 | } else { | |
373 | dev->mtu = 1500; | |
374 | } | |
375 | } | |
376 | else { | |
377 | printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n", | |
378 | ifname, bond->dev->name); | |
379 | ret = -ENODEV; | |
380 | } | |
381 | goto out; | |
382 | } | |
383 | ||
384 | err_no_cmd: | |
385 | printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name); | |
386 | ret = -EPERM; | |
387 | ||
388 | out: | |
389 | return ret; | |
390 | } | |
391 | ||
43cb76d9 | 392 | static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves); |
b76cdba9 MW |
393 | |
394 | /* | |
395 | * Show and set the bonding mode. The bond interface must be down to | |
396 | * change the mode. | |
397 | */ | |
43cb76d9 GKH |
398 | static ssize_t bonding_show_mode(struct device *d, |
399 | struct device_attribute *attr, char *buf) | |
b76cdba9 | 400 | { |
43cb76d9 | 401 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
402 | |
403 | return sprintf(buf, "%s %d\n", | |
404 | bond_mode_tbl[bond->params.mode].modename, | |
405 | bond->params.mode) + 1; | |
406 | } | |
407 | ||
43cb76d9 GKH |
408 | static ssize_t bonding_store_mode(struct device *d, |
409 | struct device_attribute *attr, | |
410 | const char *buf, size_t count) | |
b76cdba9 MW |
411 | { |
412 | int new_value, ret = count; | |
43cb76d9 | 413 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
414 | |
415 | if (bond->dev->flags & IFF_UP) { | |
416 | printk(KERN_ERR DRV_NAME | |
417 | ": unable to update mode of %s because interface is up.\n", | |
418 | bond->dev->name); | |
419 | ret = -EPERM; | |
420 | goto out; | |
421 | } | |
422 | ||
423 | new_value = bond_parse_parm((char *)buf, bond_mode_tbl); | |
424 | if (new_value < 0) { | |
425 | printk(KERN_ERR DRV_NAME | |
426 | ": %s: Ignoring invalid mode value %.*s.\n", | |
427 | bond->dev->name, | |
428 | (int)strlen(buf) - 1, buf); | |
429 | ret = -EINVAL; | |
430 | goto out; | |
431 | } else { | |
8f903c70 JV |
432 | if (bond->params.mode == BOND_MODE_8023AD) |
433 | bond_unset_master_3ad_flags(bond); | |
434 | ||
435 | if (bond->params.mode == BOND_MODE_ALB) | |
436 | bond_unset_master_alb_flags(bond); | |
437 | ||
b76cdba9 MW |
438 | bond->params.mode = new_value; |
439 | bond_set_mode_ops(bond, bond->params.mode); | |
440 | printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n", | |
441 | bond->dev->name, bond_mode_tbl[new_value].modename, new_value); | |
442 | } | |
443 | out: | |
444 | return ret; | |
445 | } | |
43cb76d9 | 446 | static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode); |
b76cdba9 MW |
447 | |
448 | /* | |
449 | * Show and set the bonding transmit hash method. The bond interface must be down to | |
450 | * change the xmit hash policy. | |
451 | */ | |
43cb76d9 GKH |
452 | static ssize_t bonding_show_xmit_hash(struct device *d, |
453 | struct device_attribute *attr, | |
454 | char *buf) | |
b76cdba9 MW |
455 | { |
456 | int count; | |
43cb76d9 | 457 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
458 | |
459 | if ((bond->params.mode != BOND_MODE_XOR) && | |
460 | (bond->params.mode != BOND_MODE_8023AD)) { | |
461 | // Not Applicable | |
462 | count = sprintf(buf, "NA\n") + 1; | |
463 | } else { | |
464 | count = sprintf(buf, "%s %d\n", | |
465 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
466 | bond->params.xmit_policy) + 1; | |
467 | } | |
468 | ||
469 | return count; | |
470 | } | |
471 | ||
43cb76d9 GKH |
472 | static ssize_t bonding_store_xmit_hash(struct device *d, |
473 | struct device_attribute *attr, | |
474 | const char *buf, size_t count) | |
b76cdba9 MW |
475 | { |
476 | int new_value, ret = count; | |
43cb76d9 | 477 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
478 | |
479 | if (bond->dev->flags & IFF_UP) { | |
480 | printk(KERN_ERR DRV_NAME | |
481 | "%s: Interface is up. Unable to update xmit policy.\n", | |
482 | bond->dev->name); | |
483 | ret = -EPERM; | |
484 | goto out; | |
485 | } | |
486 | ||
487 | if ((bond->params.mode != BOND_MODE_XOR) && | |
488 | (bond->params.mode != BOND_MODE_8023AD)) { | |
489 | printk(KERN_ERR DRV_NAME | |
490 | "%s: Transmit hash policy is irrelevant in this mode.\n", | |
491 | bond->dev->name); | |
492 | ret = -EPERM; | |
493 | goto out; | |
494 | } | |
495 | ||
496 | new_value = bond_parse_parm((char *)buf, xmit_hashtype_tbl); | |
497 | if (new_value < 0) { | |
498 | printk(KERN_ERR DRV_NAME | |
499 | ": %s: Ignoring invalid xmit hash policy value %.*s.\n", | |
500 | bond->dev->name, | |
501 | (int)strlen(buf) - 1, buf); | |
502 | ret = -EINVAL; | |
503 | goto out; | |
504 | } else { | |
505 | bond->params.xmit_policy = new_value; | |
506 | bond_set_mode_ops(bond, bond->params.mode); | |
507 | printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n", | |
508 | bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value); | |
509 | } | |
510 | out: | |
511 | return ret; | |
512 | } | |
43cb76d9 | 513 | static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash); |
b76cdba9 | 514 | |
f5b2b966 JV |
515 | /* |
516 | * Show and set arp_validate. | |
517 | */ | |
43cb76d9 GKH |
518 | static ssize_t bonding_show_arp_validate(struct device *d, |
519 | struct device_attribute *attr, | |
520 | char *buf) | |
f5b2b966 | 521 | { |
43cb76d9 | 522 | struct bonding *bond = to_bond(d); |
f5b2b966 JV |
523 | |
524 | return sprintf(buf, "%s %d\n", | |
525 | arp_validate_tbl[bond->params.arp_validate].modename, | |
526 | bond->params.arp_validate) + 1; | |
527 | } | |
528 | ||
43cb76d9 GKH |
529 | static ssize_t bonding_store_arp_validate(struct device *d, |
530 | struct device_attribute *attr, | |
531 | const char *buf, size_t count) | |
f5b2b966 JV |
532 | { |
533 | int new_value; | |
43cb76d9 | 534 | struct bonding *bond = to_bond(d); |
f5b2b966 JV |
535 | |
536 | new_value = bond_parse_parm((char *)buf, arp_validate_tbl); | |
537 | if (new_value < 0) { | |
538 | printk(KERN_ERR DRV_NAME | |
539 | ": %s: Ignoring invalid arp_validate value %s\n", | |
540 | bond->dev->name, buf); | |
541 | return -EINVAL; | |
542 | } | |
543 | if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { | |
544 | printk(KERN_ERR DRV_NAME | |
545 | ": %s: arp_validate only supported in active-backup mode.\n", | |
546 | bond->dev->name); | |
547 | return -EINVAL; | |
548 | } | |
549 | printk(KERN_INFO DRV_NAME ": %s: setting arp_validate to %s (%d).\n", | |
550 | bond->dev->name, arp_validate_tbl[new_value].modename, | |
551 | new_value); | |
552 | ||
553 | if (!bond->params.arp_validate && new_value) { | |
554 | bond_register_arp(bond); | |
555 | } else if (bond->params.arp_validate && !new_value) { | |
556 | bond_unregister_arp(bond); | |
557 | } | |
558 | ||
559 | bond->params.arp_validate = new_value; | |
560 | ||
561 | return count; | |
562 | } | |
563 | ||
43cb76d9 | 564 | static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate, bonding_store_arp_validate); |
f5b2b966 | 565 | |
b76cdba9 MW |
566 | /* |
567 | * Show and set the arp timer interval. There are two tricky bits | |
568 | * here. First, if ARP monitoring is activated, then we must disable | |
569 | * MII monitoring. Second, if the ARP timer isn't running, we must | |
570 | * start it. | |
571 | */ | |
43cb76d9 GKH |
572 | static ssize_t bonding_show_arp_interval(struct device *d, |
573 | struct device_attribute *attr, | |
574 | char *buf) | |
b76cdba9 | 575 | { |
43cb76d9 | 576 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
577 | |
578 | return sprintf(buf, "%d\n", bond->params.arp_interval) + 1; | |
579 | } | |
580 | ||
43cb76d9 GKH |
581 | static ssize_t bonding_store_arp_interval(struct device *d, |
582 | struct device_attribute *attr, | |
583 | const char *buf, size_t count) | |
b76cdba9 MW |
584 | { |
585 | int new_value, ret = count; | |
43cb76d9 | 586 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
587 | |
588 | if (sscanf(buf, "%d", &new_value) != 1) { | |
589 | printk(KERN_ERR DRV_NAME | |
590 | ": %s: no arp_interval value specified.\n", | |
591 | bond->dev->name); | |
592 | ret = -EINVAL; | |
593 | goto out; | |
594 | } | |
595 | if (new_value < 0) { | |
596 | printk(KERN_ERR DRV_NAME | |
597 | ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n", | |
598 | bond->dev->name, new_value, INT_MAX); | |
599 | ret = -EINVAL; | |
600 | goto out; | |
601 | } | |
602 | ||
603 | printk(KERN_INFO DRV_NAME | |
604 | ": %s: Setting ARP monitoring interval to %d.\n", | |
605 | bond->dev->name, new_value); | |
606 | bond->params.arp_interval = new_value; | |
607 | if (bond->params.miimon) { | |
608 | printk(KERN_INFO DRV_NAME | |
609 | ": %s: ARP monitoring cannot be used with MII monitoring. " | |
610 | "%s Disabling MII monitoring.\n", | |
611 | bond->dev->name, bond->dev->name); | |
612 | bond->params.miimon = 0; | |
613 | /* Kill MII timer, else it brings bond's link down */ | |
614 | if (bond->arp_timer.function) { | |
615 | printk(KERN_INFO DRV_NAME | |
616 | ": %s: Kill MII timer, else it brings bond's link down...\n", | |
617 | bond->dev->name); | |
618 | del_timer_sync(&bond->mii_timer); | |
619 | } | |
620 | } | |
621 | if (!bond->params.arp_targets[0]) { | |
622 | printk(KERN_INFO DRV_NAME | |
623 | ": %s: ARP monitoring has been set up, " | |
624 | "but no ARP targets have been specified.\n", | |
625 | bond->dev->name); | |
626 | } | |
627 | if (bond->dev->flags & IFF_UP) { | |
628 | /* If the interface is up, we may need to fire off | |
629 | * the ARP timer. If the interface is down, the | |
630 | * timer will get fired off when the open function | |
631 | * is called. | |
632 | */ | |
633 | if (bond->arp_timer.function) { | |
634 | /* The timer's already set up, so fire it off */ | |
635 | mod_timer(&bond->arp_timer, jiffies + 1); | |
636 | } else { | |
637 | /* Set up the timer. */ | |
638 | init_timer(&bond->arp_timer); | |
639 | bond->arp_timer.expires = jiffies + 1; | |
640 | bond->arp_timer.data = | |
641 | (unsigned long) bond->dev; | |
642 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) { | |
643 | bond->arp_timer.function = | |
644 | (void *) | |
645 | &bond_activebackup_arp_mon; | |
646 | } else { | |
647 | bond->arp_timer.function = | |
648 | (void *) | |
649 | &bond_loadbalance_arp_mon; | |
650 | } | |
651 | add_timer(&bond->arp_timer); | |
652 | } | |
653 | } | |
654 | ||
655 | out: | |
656 | return ret; | |
657 | } | |
43cb76d9 | 658 | static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR , bonding_show_arp_interval, bonding_store_arp_interval); |
b76cdba9 MW |
659 | |
660 | /* | |
661 | * Show and set the arp targets. | |
662 | */ | |
43cb76d9 GKH |
663 | static ssize_t bonding_show_arp_targets(struct device *d, |
664 | struct device_attribute *attr, | |
665 | char *buf) | |
b76cdba9 MW |
666 | { |
667 | int i, res = 0; | |
43cb76d9 | 668 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
669 | |
670 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { | |
671 | if (bond->params.arp_targets[i]) | |
672 | res += sprintf(buf + res, "%u.%u.%u.%u ", | |
673 | NIPQUAD(bond->params.arp_targets[i])); | |
674 | } | |
675 | if (res) | |
676 | res--; /* eat the leftover space */ | |
677 | res += sprintf(buf + res, "\n"); | |
678 | res++; | |
679 | return res; | |
680 | } | |
681 | ||
43cb76d9 GKH |
682 | static ssize_t bonding_store_arp_targets(struct device *d, |
683 | struct device_attribute *attr, | |
684 | const char *buf, size_t count) | |
b76cdba9 MW |
685 | { |
686 | u32 newtarget; | |
687 | int i = 0, done = 0, ret = count; | |
43cb76d9 | 688 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
689 | u32 *targets; |
690 | ||
691 | targets = bond->params.arp_targets; | |
692 | newtarget = in_aton(buf + 1); | |
693 | /* look for adds */ | |
694 | if (buf[0] == '+') { | |
695 | if ((newtarget == 0) || (newtarget == INADDR_BROADCAST)) { | |
696 | printk(KERN_ERR DRV_NAME | |
697 | ": %s: invalid ARP target %u.%u.%u.%u specified for addition\n", | |
698 | bond->dev->name, NIPQUAD(newtarget)); | |
699 | ret = -EINVAL; | |
700 | goto out; | |
701 | } | |
702 | /* look for an empty slot to put the target in, and check for dupes */ | |
703 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
704 | if (targets[i] == newtarget) { /* duplicate */ | |
705 | printk(KERN_ERR DRV_NAME | |
706 | ": %s: ARP target %u.%u.%u.%u is already present\n", | |
707 | bond->dev->name, NIPQUAD(newtarget)); | |
708 | if (done) | |
709 | targets[i] = 0; | |
710 | ret = -EINVAL; | |
711 | goto out; | |
712 | } | |
713 | if (targets[i] == 0 && !done) { | |
714 | printk(KERN_INFO DRV_NAME | |
715 | ": %s: adding ARP target %d.%d.%d.%d.\n", | |
716 | bond->dev->name, NIPQUAD(newtarget)); | |
717 | done = 1; | |
718 | targets[i] = newtarget; | |
719 | } | |
720 | } | |
721 | if (!done) { | |
722 | printk(KERN_ERR DRV_NAME | |
723 | ": %s: ARP target table is full!\n", | |
724 | bond->dev->name); | |
725 | ret = -EINVAL; | |
726 | goto out; | |
727 | } | |
728 | ||
729 | } | |
730 | else if (buf[0] == '-') { | |
731 | if ((newtarget == 0) || (newtarget == INADDR_BROADCAST)) { | |
732 | printk(KERN_ERR DRV_NAME | |
733 | ": %s: invalid ARP target %d.%d.%d.%d specified for removal\n", | |
734 | bond->dev->name, NIPQUAD(newtarget)); | |
735 | ret = -EINVAL; | |
736 | goto out; | |
737 | } | |
738 | ||
739 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
740 | if (targets[i] == newtarget) { | |
741 | printk(KERN_INFO DRV_NAME | |
742 | ": %s: removing ARP target %d.%d.%d.%d.\n", | |
743 | bond->dev->name, NIPQUAD(newtarget)); | |
744 | targets[i] = 0; | |
745 | done = 1; | |
746 | } | |
747 | } | |
748 | if (!done) { | |
749 | printk(KERN_INFO DRV_NAME | |
750 | ": %s: unable to remove nonexistent ARP target %d.%d.%d.%d.\n", | |
751 | bond->dev->name, NIPQUAD(newtarget)); | |
752 | ret = -EINVAL; | |
753 | goto out; | |
754 | } | |
755 | } | |
756 | else { | |
757 | printk(KERN_ERR DRV_NAME ": no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n", | |
758 | bond->dev->name); | |
759 | ret = -EPERM; | |
760 | goto out; | |
761 | } | |
762 | ||
763 | out: | |
764 | return ret; | |
765 | } | |
43cb76d9 | 766 | static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets); |
b76cdba9 MW |
767 | |
768 | /* | |
769 | * Show and set the up and down delays. These must be multiples of the | |
770 | * MII monitoring value, and are stored internally as the multiplier. | |
771 | * Thus, we must translate to MS for the real world. | |
772 | */ | |
43cb76d9 GKH |
773 | static ssize_t bonding_show_downdelay(struct device *d, |
774 | struct device_attribute *attr, | |
775 | char *buf) | |
b76cdba9 | 776 | { |
43cb76d9 | 777 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
778 | |
779 | return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon) + 1; | |
780 | } | |
781 | ||
43cb76d9 GKH |
782 | static ssize_t bonding_store_downdelay(struct device *d, |
783 | struct device_attribute *attr, | |
784 | const char *buf, size_t count) | |
b76cdba9 MW |
785 | { |
786 | int new_value, ret = count; | |
43cb76d9 | 787 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
788 | |
789 | if (!(bond->params.miimon)) { | |
790 | printk(KERN_ERR DRV_NAME | |
791 | ": %s: Unable to set down delay as MII monitoring is disabled\n", | |
792 | bond->dev->name); | |
793 | ret = -EPERM; | |
794 | goto out; | |
795 | } | |
796 | ||
797 | if (sscanf(buf, "%d", &new_value) != 1) { | |
798 | printk(KERN_ERR DRV_NAME | |
799 | ": %s: no down delay value specified.\n", | |
800 | bond->dev->name); | |
801 | ret = -EINVAL; | |
802 | goto out; | |
803 | } | |
804 | if (new_value < 0) { | |
805 | printk(KERN_ERR DRV_NAME | |
806 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
807 | bond->dev->name, new_value, 1, INT_MAX); | |
808 | ret = -EINVAL; | |
809 | goto out; | |
810 | } else { | |
811 | if ((new_value % bond->params.miimon) != 0) { | |
812 | printk(KERN_WARNING DRV_NAME | |
813 | ": %s: Warning: down delay (%d) is not a multiple " | |
814 | "of miimon (%d), delay rounded to %d ms\n", | |
815 | bond->dev->name, new_value, bond->params.miimon, | |
816 | (new_value / bond->params.miimon) * | |
817 | bond->params.miimon); | |
818 | } | |
819 | bond->params.downdelay = new_value / bond->params.miimon; | |
820 | printk(KERN_INFO DRV_NAME ": %s: Setting down delay to %d.\n", | |
821 | bond->dev->name, bond->params.downdelay * bond->params.miimon); | |
822 | ||
823 | } | |
824 | ||
825 | out: | |
826 | return ret; | |
827 | } | |
43cb76d9 | 828 | static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay); |
b76cdba9 | 829 | |
43cb76d9 GKH |
830 | static ssize_t bonding_show_updelay(struct device *d, |
831 | struct device_attribute *attr, | |
832 | char *buf) | |
b76cdba9 | 833 | { |
43cb76d9 | 834 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
835 | |
836 | return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon) + 1; | |
837 | ||
838 | } | |
839 | ||
43cb76d9 GKH |
840 | static ssize_t bonding_store_updelay(struct device *d, |
841 | struct device_attribute *attr, | |
842 | const char *buf, size_t count) | |
b76cdba9 MW |
843 | { |
844 | int new_value, ret = count; | |
43cb76d9 | 845 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
846 | |
847 | if (!(bond->params.miimon)) { | |
848 | printk(KERN_ERR DRV_NAME | |
849 | ": %s: Unable to set up delay as MII monitoring is disabled\n", | |
850 | bond->dev->name); | |
851 | ret = -EPERM; | |
852 | goto out; | |
853 | } | |
854 | ||
855 | if (sscanf(buf, "%d", &new_value) != 1) { | |
856 | printk(KERN_ERR DRV_NAME | |
857 | ": %s: no up delay value specified.\n", | |
858 | bond->dev->name); | |
859 | ret = -EINVAL; | |
860 | goto out; | |
861 | } | |
862 | if (new_value < 0) { | |
863 | printk(KERN_ERR DRV_NAME | |
864 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
865 | bond->dev->name, new_value, 1, INT_MAX); | |
866 | ret = -EINVAL; | |
867 | goto out; | |
868 | } else { | |
869 | if ((new_value % bond->params.miimon) != 0) { | |
870 | printk(KERN_WARNING DRV_NAME | |
871 | ": %s: Warning: up delay (%d) is not a multiple " | |
872 | "of miimon (%d), updelay rounded to %d ms\n", | |
873 | bond->dev->name, new_value, bond->params.miimon, | |
874 | (new_value / bond->params.miimon) * | |
875 | bond->params.miimon); | |
876 | } | |
877 | bond->params.updelay = new_value / bond->params.miimon; | |
878 | printk(KERN_INFO DRV_NAME ": %s: Setting up delay to %d.\n", | |
879 | bond->dev->name, bond->params.updelay * bond->params.miimon); | |
880 | ||
881 | } | |
882 | ||
883 | out: | |
884 | return ret; | |
885 | } | |
43cb76d9 | 886 | static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR , bonding_show_updelay, bonding_store_updelay); |
b76cdba9 MW |
887 | |
888 | /* | |
889 | * Show and set the LACP interval. Interface must be down, and the mode | |
890 | * must be set to 802.3ad mode. | |
891 | */ | |
43cb76d9 GKH |
892 | static ssize_t bonding_show_lacp(struct device *d, |
893 | struct device_attribute *attr, | |
894 | char *buf) | |
b76cdba9 | 895 | { |
43cb76d9 | 896 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
897 | |
898 | return sprintf(buf, "%s %d\n", | |
899 | bond_lacp_tbl[bond->params.lacp_fast].modename, | |
900 | bond->params.lacp_fast) + 1; | |
901 | } | |
902 | ||
43cb76d9 GKH |
903 | static ssize_t bonding_store_lacp(struct device *d, |
904 | struct device_attribute *attr, | |
905 | const char *buf, size_t count) | |
b76cdba9 MW |
906 | { |
907 | int new_value, ret = count; | |
43cb76d9 | 908 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
909 | |
910 | if (bond->dev->flags & IFF_UP) { | |
911 | printk(KERN_ERR DRV_NAME | |
912 | ": %s: Unable to update LACP rate because interface is up.\n", | |
913 | bond->dev->name); | |
914 | ret = -EPERM; | |
915 | goto out; | |
916 | } | |
917 | ||
918 | if (bond->params.mode != BOND_MODE_8023AD) { | |
919 | printk(KERN_ERR DRV_NAME | |
920 | ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n", | |
921 | bond->dev->name); | |
922 | ret = -EPERM; | |
923 | goto out; | |
924 | } | |
925 | ||
926 | new_value = bond_parse_parm((char *)buf, bond_lacp_tbl); | |
927 | ||
928 | if ((new_value == 1) || (new_value == 0)) { | |
929 | bond->params.lacp_fast = new_value; | |
930 | printk(KERN_INFO DRV_NAME | |
931 | ": %s: Setting LACP rate to %s (%d).\n", | |
932 | bond->dev->name, bond_lacp_tbl[new_value].modename, new_value); | |
933 | } else { | |
934 | printk(KERN_ERR DRV_NAME | |
935 | ": %s: Ignoring invalid LACP rate value %.*s.\n", | |
936 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
937 | ret = -EINVAL; | |
938 | } | |
939 | out: | |
940 | return ret; | |
941 | } | |
43cb76d9 | 942 | static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp); |
b76cdba9 MW |
943 | |
944 | /* | |
945 | * Show and set the MII monitor interval. There are two tricky bits | |
946 | * here. First, if MII monitoring is activated, then we must disable | |
947 | * ARP monitoring. Second, if the timer isn't running, we must | |
948 | * start it. | |
949 | */ | |
43cb76d9 GKH |
950 | static ssize_t bonding_show_miimon(struct device *d, |
951 | struct device_attribute *attr, | |
952 | char *buf) | |
b76cdba9 | 953 | { |
43cb76d9 | 954 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
955 | |
956 | return sprintf(buf, "%d\n", bond->params.miimon) + 1; | |
957 | } | |
958 | ||
43cb76d9 GKH |
959 | static ssize_t bonding_store_miimon(struct device *d, |
960 | struct device_attribute *attr, | |
961 | const char *buf, size_t count) | |
b76cdba9 MW |
962 | { |
963 | int new_value, ret = count; | |
43cb76d9 | 964 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
965 | |
966 | if (sscanf(buf, "%d", &new_value) != 1) { | |
967 | printk(KERN_ERR DRV_NAME | |
968 | ": %s: no miimon value specified.\n", | |
969 | bond->dev->name); | |
970 | ret = -EINVAL; | |
971 | goto out; | |
972 | } | |
973 | if (new_value < 0) { | |
974 | printk(KERN_ERR DRV_NAME | |
975 | ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n", | |
976 | bond->dev->name, new_value, 1, INT_MAX); | |
977 | ret = -EINVAL; | |
978 | goto out; | |
979 | } else { | |
980 | printk(KERN_INFO DRV_NAME | |
981 | ": %s: Setting MII monitoring interval to %d.\n", | |
982 | bond->dev->name, new_value); | |
983 | bond->params.miimon = new_value; | |
984 | if(bond->params.updelay) | |
985 | printk(KERN_INFO DRV_NAME | |
986 | ": %s: Note: Updating updelay (to %d) " | |
987 | "since it is a multiple of the miimon value.\n", | |
988 | bond->dev->name, | |
989 | bond->params.updelay * bond->params.miimon); | |
990 | if(bond->params.downdelay) | |
991 | printk(KERN_INFO DRV_NAME | |
992 | ": %s: Note: Updating downdelay (to %d) " | |
993 | "since it is a multiple of the miimon value.\n", | |
994 | bond->dev->name, | |
995 | bond->params.downdelay * bond->params.miimon); | |
996 | if (bond->params.arp_interval) { | |
997 | printk(KERN_INFO DRV_NAME | |
998 | ": %s: MII monitoring cannot be used with " | |
999 | "ARP monitoring. Disabling ARP monitoring...\n", | |
1000 | bond->dev->name); | |
1001 | bond->params.arp_interval = 0; | |
f5b2b966 JV |
1002 | if (bond->params.arp_validate) { |
1003 | bond_unregister_arp(bond); | |
1004 | bond->params.arp_validate = | |
1005 | BOND_ARP_VALIDATE_NONE; | |
1006 | } | |
b76cdba9 MW |
1007 | /* Kill ARP timer, else it brings bond's link down */ |
1008 | if (bond->mii_timer.function) { | |
1009 | printk(KERN_INFO DRV_NAME | |
1010 | ": %s: Kill ARP timer, else it brings bond's link down...\n", | |
1011 | bond->dev->name); | |
1012 | del_timer_sync(&bond->arp_timer); | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | if (bond->dev->flags & IFF_UP) { | |
1017 | /* If the interface is up, we may need to fire off | |
1018 | * the MII timer. If the interface is down, the | |
1019 | * timer will get fired off when the open function | |
1020 | * is called. | |
1021 | */ | |
1022 | if (bond->mii_timer.function) { | |
1023 | /* The timer's already set up, so fire it off */ | |
1024 | mod_timer(&bond->mii_timer, jiffies + 1); | |
1025 | } else { | |
1026 | /* Set up the timer. */ | |
1027 | init_timer(&bond->mii_timer); | |
1028 | bond->mii_timer.expires = jiffies + 1; | |
1029 | bond->mii_timer.data = | |
1030 | (unsigned long) bond->dev; | |
1031 | bond->mii_timer.function = | |
1032 | (void *) &bond_mii_monitor; | |
1033 | add_timer(&bond->mii_timer); | |
1034 | } | |
1035 | } | |
1036 | } | |
1037 | out: | |
1038 | return ret; | |
1039 | } | |
43cb76d9 | 1040 | static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR, bonding_show_miimon, bonding_store_miimon); |
b76cdba9 MW |
1041 | |
1042 | /* | |
1043 | * Show and set the primary slave. The store function is much | |
1044 | * simpler than bonding_store_slaves function because it only needs to | |
1045 | * handle one interface name. | |
1046 | * The bond must be a mode that supports a primary for this be | |
1047 | * set. | |
1048 | */ | |
43cb76d9 GKH |
1049 | static ssize_t bonding_show_primary(struct device *d, |
1050 | struct device_attribute *attr, | |
1051 | char *buf) | |
b76cdba9 MW |
1052 | { |
1053 | int count = 0; | |
43cb76d9 | 1054 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1055 | |
1056 | if (bond->primary_slave) | |
1057 | count = sprintf(buf, "%s\n", bond->primary_slave->dev->name) + 1; | |
1058 | else | |
1059 | count = sprintf(buf, "\n") + 1; | |
1060 | ||
1061 | return count; | |
1062 | } | |
1063 | ||
43cb76d9 GKH |
1064 | static ssize_t bonding_store_primary(struct device *d, |
1065 | struct device_attribute *attr, | |
1066 | const char *buf, size_t count) | |
b76cdba9 MW |
1067 | { |
1068 | int i; | |
1069 | struct slave *slave; | |
43cb76d9 | 1070 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1071 | |
1072 | write_lock_bh(&bond->lock); | |
1073 | if (!USES_PRIMARY(bond->params.mode)) { | |
1074 | printk(KERN_INFO DRV_NAME | |
1075 | ": %s: Unable to set primary slave; %s is in mode %d\n", | |
1076 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1077 | } else { | |
1078 | bond_for_each_slave(bond, slave, i) { | |
1079 | if (strnicmp | |
1080 | (slave->dev->name, buf, | |
1081 | strlen(slave->dev->name)) == 0) { | |
1082 | printk(KERN_INFO DRV_NAME | |
1083 | ": %s: Setting %s as primary slave.\n", | |
1084 | bond->dev->name, slave->dev->name); | |
1085 | bond->primary_slave = slave; | |
1086 | bond_select_active_slave(bond); | |
1087 | goto out; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | /* if we got here, then we didn't match the name of any slave */ | |
1092 | ||
1093 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1094 | printk(KERN_INFO DRV_NAME | |
1095 | ": %s: Setting primary slave to None.\n", | |
1096 | bond->dev->name); | |
3418db7c | 1097 | bond->primary_slave = NULL; |
b76cdba9 MW |
1098 | bond_select_active_slave(bond); |
1099 | } else { | |
1100 | printk(KERN_INFO DRV_NAME | |
1101 | ": %s: Unable to set %.*s as primary slave as it is not a slave.\n", | |
1102 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1103 | } | |
1104 | } | |
1105 | out: | |
1106 | write_unlock_bh(&bond->lock); | |
1107 | return count; | |
1108 | } | |
43cb76d9 | 1109 | static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, bonding_show_primary, bonding_store_primary); |
b76cdba9 MW |
1110 | |
1111 | /* | |
1112 | * Show and set the use_carrier flag. | |
1113 | */ | |
43cb76d9 GKH |
1114 | static ssize_t bonding_show_carrier(struct device *d, |
1115 | struct device_attribute *attr, | |
1116 | char *buf) | |
b76cdba9 | 1117 | { |
43cb76d9 | 1118 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1119 | |
1120 | return sprintf(buf, "%d\n", bond->params.use_carrier) + 1; | |
1121 | } | |
1122 | ||
43cb76d9 GKH |
1123 | static ssize_t bonding_store_carrier(struct device *d, |
1124 | struct device_attribute *attr, | |
1125 | const char *buf, size_t count) | |
b76cdba9 MW |
1126 | { |
1127 | int new_value, ret = count; | |
43cb76d9 | 1128 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1129 | |
1130 | ||
1131 | if (sscanf(buf, "%d", &new_value) != 1) { | |
1132 | printk(KERN_ERR DRV_NAME | |
1133 | ": %s: no use_carrier value specified.\n", | |
1134 | bond->dev->name); | |
1135 | ret = -EINVAL; | |
1136 | goto out; | |
1137 | } | |
1138 | if ((new_value == 0) || (new_value == 1)) { | |
1139 | bond->params.use_carrier = new_value; | |
1140 | printk(KERN_INFO DRV_NAME ": %s: Setting use_carrier to %d.\n", | |
1141 | bond->dev->name, new_value); | |
1142 | } else { | |
1143 | printk(KERN_INFO DRV_NAME | |
1144 | ": %s: Ignoring invalid use_carrier value %d.\n", | |
1145 | bond->dev->name, new_value); | |
1146 | } | |
1147 | out: | |
1148 | return count; | |
1149 | } | |
43cb76d9 | 1150 | static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, bonding_show_carrier, bonding_store_carrier); |
b76cdba9 MW |
1151 | |
1152 | ||
1153 | /* | |
1154 | * Show and set currently active_slave. | |
1155 | */ | |
43cb76d9 GKH |
1156 | static ssize_t bonding_show_active_slave(struct device *d, |
1157 | struct device_attribute *attr, | |
1158 | char *buf) | |
b76cdba9 MW |
1159 | { |
1160 | struct slave *curr; | |
43cb76d9 | 1161 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1162 | int count; |
1163 | ||
1164 | ||
1165 | read_lock(&bond->curr_slave_lock); | |
1166 | curr = bond->curr_active_slave; | |
1167 | read_unlock(&bond->curr_slave_lock); | |
1168 | ||
1169 | if (USES_PRIMARY(bond->params.mode) && curr) | |
1170 | count = sprintf(buf, "%s\n", curr->dev->name) + 1; | |
1171 | else | |
1172 | count = sprintf(buf, "\n") + 1; | |
1173 | return count; | |
1174 | } | |
1175 | ||
43cb76d9 GKH |
1176 | static ssize_t bonding_store_active_slave(struct device *d, |
1177 | struct device_attribute *attr, | |
1178 | const char *buf, size_t count) | |
b76cdba9 MW |
1179 | { |
1180 | int i; | |
1181 | struct slave *slave; | |
1182 | struct slave *old_active = NULL; | |
1183 | struct slave *new_active = NULL; | |
43cb76d9 | 1184 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1185 | |
1186 | write_lock_bh(&bond->lock); | |
1187 | if (!USES_PRIMARY(bond->params.mode)) { | |
1188 | printk(KERN_INFO DRV_NAME | |
1189 | ": %s: Unable to change active slave; %s is in mode %d\n", | |
1190 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1191 | } else { | |
1192 | bond_for_each_slave(bond, slave, i) { | |
1193 | if (strnicmp | |
1194 | (slave->dev->name, buf, | |
1195 | strlen(slave->dev->name)) == 0) { | |
1196 | old_active = bond->curr_active_slave; | |
1197 | new_active = slave; | |
a50d8de2 | 1198 | if (new_active == old_active) { |
b76cdba9 MW |
1199 | /* do nothing */ |
1200 | printk(KERN_INFO DRV_NAME | |
1201 | ": %s: %s is already the current active slave.\n", | |
1202 | bond->dev->name, slave->dev->name); | |
1203 | goto out; | |
1204 | } | |
1205 | else { | |
1206 | if ((new_active) && | |
1207 | (old_active) && | |
1208 | (new_active->link == BOND_LINK_UP) && | |
1209 | IS_UP(new_active->dev)) { | |
1210 | printk(KERN_INFO DRV_NAME | |
1211 | ": %s: Setting %s as active slave.\n", | |
1212 | bond->dev->name, slave->dev->name); | |
1213 | bond_change_active_slave(bond, new_active); | |
1214 | } | |
1215 | else { | |
1216 | printk(KERN_INFO DRV_NAME | |
1217 | ": %s: Could not set %s as active slave; " | |
1218 | "either %s is down or the link is down.\n", | |
1219 | bond->dev->name, slave->dev->name, | |
1220 | slave->dev->name); | |
1221 | } | |
1222 | goto out; | |
1223 | } | |
1224 | } | |
1225 | } | |
1226 | ||
1227 | /* if we got here, then we didn't match the name of any slave */ | |
1228 | ||
1229 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1230 | printk(KERN_INFO DRV_NAME | |
1231 | ": %s: Setting active slave to None.\n", | |
1232 | bond->dev->name); | |
3418db7c | 1233 | bond->primary_slave = NULL; |
b76cdba9 MW |
1234 | bond_select_active_slave(bond); |
1235 | } else { | |
1236 | printk(KERN_INFO DRV_NAME | |
1237 | ": %s: Unable to set %.*s as active slave as it is not a slave.\n", | |
1238 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1239 | } | |
1240 | } | |
1241 | out: | |
1242 | write_unlock_bh(&bond->lock); | |
1243 | return count; | |
1244 | ||
1245 | } | |
43cb76d9 | 1246 | static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, bonding_show_active_slave, bonding_store_active_slave); |
b76cdba9 MW |
1247 | |
1248 | ||
1249 | /* | |
1250 | * Show link status of the bond interface. | |
1251 | */ | |
43cb76d9 GKH |
1252 | static ssize_t bonding_show_mii_status(struct device *d, |
1253 | struct device_attribute *attr, | |
1254 | char *buf) | |
b76cdba9 MW |
1255 | { |
1256 | struct slave *curr; | |
43cb76d9 | 1257 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1258 | |
1259 | read_lock(&bond->curr_slave_lock); | |
1260 | curr = bond->curr_active_slave; | |
1261 | read_unlock(&bond->curr_slave_lock); | |
1262 | ||
1263 | return sprintf(buf, "%s\n", (curr) ? "up" : "down") + 1; | |
1264 | } | |
43cb76d9 | 1265 | static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL); |
b76cdba9 MW |
1266 | |
1267 | ||
1268 | /* | |
1269 | * Show current 802.3ad aggregator ID. | |
1270 | */ | |
43cb76d9 GKH |
1271 | static ssize_t bonding_show_ad_aggregator(struct device *d, |
1272 | struct device_attribute *attr, | |
1273 | char *buf) | |
b76cdba9 MW |
1274 | { |
1275 | int count = 0; | |
43cb76d9 | 1276 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1277 | |
1278 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1279 | struct ad_info ad_info; | |
1280 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id) + 1; | |
1281 | } | |
1282 | else | |
1283 | count = sprintf(buf, "\n") + 1; | |
1284 | ||
1285 | return count; | |
1286 | } | |
43cb76d9 | 1287 | static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL); |
b76cdba9 MW |
1288 | |
1289 | ||
1290 | /* | |
1291 | * Show number of active 802.3ad ports. | |
1292 | */ | |
43cb76d9 GKH |
1293 | static ssize_t bonding_show_ad_num_ports(struct device *d, |
1294 | struct device_attribute *attr, | |
1295 | char *buf) | |
b76cdba9 MW |
1296 | { |
1297 | int count = 0; | |
43cb76d9 | 1298 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1299 | |
1300 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1301 | struct ad_info ad_info; | |
1302 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports) + 1; | |
1303 | } | |
1304 | else | |
1305 | count = sprintf(buf, "\n") + 1; | |
1306 | ||
1307 | return count; | |
1308 | } | |
43cb76d9 | 1309 | static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL); |
b76cdba9 MW |
1310 | |
1311 | ||
1312 | /* | |
1313 | * Show current 802.3ad actor key. | |
1314 | */ | |
43cb76d9 GKH |
1315 | static ssize_t bonding_show_ad_actor_key(struct device *d, |
1316 | struct device_attribute *attr, | |
1317 | char *buf) | |
b76cdba9 MW |
1318 | { |
1319 | int count = 0; | |
43cb76d9 | 1320 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1321 | |
1322 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1323 | struct ad_info ad_info; | |
1324 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key) + 1; | |
1325 | } | |
1326 | else | |
1327 | count = sprintf(buf, "\n") + 1; | |
1328 | ||
1329 | return count; | |
1330 | } | |
43cb76d9 | 1331 | static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL); |
b76cdba9 MW |
1332 | |
1333 | ||
1334 | /* | |
1335 | * Show current 802.3ad partner key. | |
1336 | */ | |
43cb76d9 GKH |
1337 | static ssize_t bonding_show_ad_partner_key(struct device *d, |
1338 | struct device_attribute *attr, | |
1339 | char *buf) | |
b76cdba9 MW |
1340 | { |
1341 | int count = 0; | |
43cb76d9 | 1342 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1343 | |
1344 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1345 | struct ad_info ad_info; | |
1346 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key) + 1; | |
1347 | } | |
1348 | else | |
1349 | count = sprintf(buf, "\n") + 1; | |
1350 | ||
1351 | return count; | |
1352 | } | |
43cb76d9 | 1353 | static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL); |
b76cdba9 MW |
1354 | |
1355 | ||
1356 | /* | |
1357 | * Show current 802.3ad partner mac. | |
1358 | */ | |
43cb76d9 GKH |
1359 | static ssize_t bonding_show_ad_partner_mac(struct device *d, |
1360 | struct device_attribute *attr, | |
1361 | char *buf) | |
b76cdba9 MW |
1362 | { |
1363 | int count = 0; | |
43cb76d9 | 1364 | struct bonding *bond = to_bond(d); |
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)) { | |
1369 | count = sprintf(buf,"%02x:%02x:%02x:%02x:%02x:%02x\n", | |
1370 | ad_info.partner_system[0], | |
1371 | ad_info.partner_system[1], | |
1372 | ad_info.partner_system[2], | |
1373 | ad_info.partner_system[3], | |
1374 | ad_info.partner_system[4], | |
1375 | ad_info.partner_system[5]) + 1; | |
1376 | } | |
1377 | } | |
1378 | else | |
1379 | count = sprintf(buf, "\n") + 1; | |
1380 | ||
1381 | return count; | |
1382 | } | |
43cb76d9 | 1383 | static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL); |
b76cdba9 MW |
1384 | |
1385 | ||
1386 | ||
1387 | static struct attribute *per_bond_attrs[] = { | |
43cb76d9 GKH |
1388 | &dev_attr_slaves.attr, |
1389 | &dev_attr_mode.attr, | |
1390 | &dev_attr_arp_validate.attr, | |
1391 | &dev_attr_arp_interval.attr, | |
1392 | &dev_attr_arp_ip_target.attr, | |
1393 | &dev_attr_downdelay.attr, | |
1394 | &dev_attr_updelay.attr, | |
1395 | &dev_attr_lacp_rate.attr, | |
1396 | &dev_attr_xmit_hash_policy.attr, | |
1397 | &dev_attr_miimon.attr, | |
1398 | &dev_attr_primary.attr, | |
1399 | &dev_attr_use_carrier.attr, | |
1400 | &dev_attr_active_slave.attr, | |
1401 | &dev_attr_mii_status.attr, | |
1402 | &dev_attr_ad_aggregator.attr, | |
1403 | &dev_attr_ad_num_ports.attr, | |
1404 | &dev_attr_ad_actor_key.attr, | |
1405 | &dev_attr_ad_partner_key.attr, | |
1406 | &dev_attr_ad_partner_mac.attr, | |
b76cdba9 MW |
1407 | NULL, |
1408 | }; | |
1409 | ||
1410 | static struct attribute_group bonding_group = { | |
1411 | .name = "bonding", | |
1412 | .attrs = per_bond_attrs, | |
1413 | }; | |
1414 | ||
1415 | /* | |
1416 | * Initialize sysfs. This sets up the bonding_masters file in | |
1417 | * /sys/class/net. | |
1418 | */ | |
1419 | int bond_create_sysfs(void) | |
1420 | { | |
1421 | int ret = 0; | |
1422 | struct bonding *firstbond; | |
1423 | ||
1424 | init_rwsem(&bonding_rwsem); | |
1425 | ||
1426 | /* get the netdev class pointer */ | |
1427 | firstbond = container_of(bond_dev_list.next, struct bonding, bond_list); | |
1428 | if (!firstbond) | |
1429 | return -ENODEV; | |
1430 | ||
43cb76d9 | 1431 | netdev_class = firstbond->dev->dev.class; |
b76cdba9 MW |
1432 | if (!netdev_class) |
1433 | return -ENODEV; | |
1434 | ||
1435 | ret = class_create_file(netdev_class, &class_attr_bonding_masters); | |
877cbd36 JV |
1436 | /* |
1437 | * Permit multiple loads of the module by ignoring failures to | |
1438 | * create the bonding_masters sysfs file. Bonding devices | |
1439 | * created by second or subsequent loads of the module will | |
1440 | * not be listed in, or controllable by, bonding_masters, but | |
1441 | * will have the usual "bonding" sysfs directory. | |
1442 | * | |
1443 | * This is done to preserve backwards compatibility for | |
1444 | * initscripts/sysconfig, which load bonding multiple times to | |
1445 | * configure multiple bonding devices. | |
1446 | */ | |
1447 | if (ret == -EEXIST) { | |
1448 | netdev_class = NULL; | |
1449 | return 0; | |
1450 | } | |
b76cdba9 MW |
1451 | |
1452 | return ret; | |
1453 | ||
1454 | } | |
1455 | ||
1456 | /* | |
1457 | * Remove /sys/class/net/bonding_masters. | |
1458 | */ | |
1459 | void bond_destroy_sysfs(void) | |
1460 | { | |
1461 | if (netdev_class) | |
1462 | class_remove_file(netdev_class, &class_attr_bonding_masters); | |
1463 | } | |
1464 | ||
1465 | /* | |
1466 | * Initialize sysfs for each bond. This sets up and registers | |
1467 | * the 'bondctl' directory for each individual bond under /sys/class/net. | |
1468 | */ | |
1469 | int bond_create_sysfs_entry(struct bonding *bond) | |
1470 | { | |
1471 | struct net_device *dev = bond->dev; | |
1472 | int err; | |
1473 | ||
43cb76d9 | 1474 | err = sysfs_create_group(&(dev->dev.kobj), &bonding_group); |
b76cdba9 MW |
1475 | if (err) { |
1476 | printk(KERN_EMERG "eek! didn't create group!\n"); | |
1477 | } | |
1478 | ||
1479 | if (expected_refcount < 1) | |
43cb76d9 | 1480 | expected_refcount = atomic_read(&bond->dev->dev.kobj.kref.refcount); |
b76cdba9 MW |
1481 | |
1482 | return err; | |
1483 | } | |
1484 | /* | |
1485 | * Remove sysfs entries for each bond. | |
1486 | */ | |
1487 | void bond_destroy_sysfs_entry(struct bonding *bond) | |
1488 | { | |
1489 | struct net_device *dev = bond->dev; | |
1490 | ||
43cb76d9 | 1491 | sysfs_remove_group(&(dev->dev.kobj), &bonding_group); |
b76cdba9 MW |
1492 | } |
1493 |