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Commit | Line | Data |
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b76cdba9 MW |
1 | |
2 | /* | |
3 | * Copyright(c) 2004-2005 Intel Corporation. All rights reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License as published by the | |
7 | * Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
12 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
13 | * for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | * | |
19 | * The full GNU General Public License is included in this distribution in the | |
20 | * file called LICENSE. | |
21 | * | |
b76cdba9 | 22 | */ |
b76cdba9 MW |
23 | #include <linux/kernel.h> |
24 | #include <linux/module.h> | |
b76cdba9 MW |
25 | #include <linux/device.h> |
26 | #include <linux/sysdev.h> | |
27 | #include <linux/fs.h> | |
28 | #include <linux/types.h> | |
29 | #include <linux/string.h> | |
30 | #include <linux/netdevice.h> | |
31 | #include <linux/inetdevice.h> | |
32 | #include <linux/in.h> | |
33 | #include <linux/sysfs.h> | |
b76cdba9 MW |
34 | #include <linux/ctype.h> |
35 | #include <linux/inet.h> | |
36 | #include <linux/rtnetlink.h> | |
881d966b | 37 | #include <net/net_namespace.h> |
b76cdba9 MW |
38 | |
39 | /* #define BONDING_DEBUG 1 */ | |
40 | #include "bonding.h" | |
43cb76d9 | 41 | #define to_dev(obj) container_of(obj,struct device,kobj) |
b76cdba9 MW |
42 | #define to_bond(cd) ((struct bonding *)(to_net_dev(cd)->priv)) |
43 | ||
44 | /*---------------------------- Declarations -------------------------------*/ | |
45 | ||
46 | ||
47 | extern struct list_head bond_dev_list; | |
48 | extern struct bond_params bonding_defaults; | |
49 | extern struct bond_parm_tbl bond_mode_tbl[]; | |
50 | extern struct bond_parm_tbl bond_lacp_tbl[]; | |
51 | extern struct bond_parm_tbl xmit_hashtype_tbl[]; | |
f5b2b966 | 52 | extern struct bond_parm_tbl arp_validate_tbl[]; |
b76cdba9 MW |
53 | |
54 | static int expected_refcount = -1; | |
55 | static struct class *netdev_class; | |
56 | /*--------------------------- Data Structures -----------------------------*/ | |
57 | ||
3a4fa0a2 | 58 | /* Bonding sysfs lock. Why can't we just use the subsystem lock? |
b76cdba9 MW |
59 | * Because kobject_register tries to acquire the subsystem lock. If |
60 | * we already hold the lock (which we would if the user was creating | |
61 | * a new bond through the sysfs interface), we deadlock. | |
62 | * This lock is only needed when deleting a bond - we need to make sure | |
63 | * that we don't collide with an ongoing ioctl. | |
64 | */ | |
65 | ||
66 | struct rw_semaphore bonding_rwsem; | |
67 | ||
68 | ||
69 | ||
70 | ||
71 | /*------------------------------ Functions --------------------------------*/ | |
72 | ||
73 | /* | |
74 | * "show" function for the bond_masters attribute. | |
75 | * The class parameter is ignored. | |
76 | */ | |
b8843665 | 77 | static ssize_t bonding_show_bonds(struct class *cls, char *buf) |
b76cdba9 MW |
78 | { |
79 | int res = 0; | |
80 | struct bonding *bond; | |
81 | ||
82 | down_read(&(bonding_rwsem)); | |
83 | ||
84 | list_for_each_entry(bond, &bond_dev_list, bond_list) { | |
85 | if (res > (PAGE_SIZE - IFNAMSIZ)) { | |
86 | /* not enough space for another interface name */ | |
87 | if ((PAGE_SIZE - res) > 10) | |
88 | res = PAGE_SIZE - 10; | |
b8843665 | 89 | res += sprintf(buf + res, "++more++ "); |
b76cdba9 MW |
90 | break; |
91 | } | |
b8843665 | 92 | res += sprintf(buf + res, "%s ", bond->dev->name); |
b76cdba9 | 93 | } |
1dcdcd69 WF |
94 | if (res) |
95 | buf[res-1] = '\n'; /* eat the leftover space */ | |
b76cdba9 MW |
96 | up_read(&(bonding_rwsem)); |
97 | return res; | |
98 | } | |
99 | ||
100 | /* | |
101 | * "store" function for the bond_masters attribute. This is what | |
102 | * creates and deletes entire bonds. | |
103 | * | |
104 | * The class parameter is ignored. | |
105 | * | |
106 | */ | |
107 | ||
108 | static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t count) | |
109 | { | |
110 | char command[IFNAMSIZ + 1] = {0, }; | |
111 | char *ifname; | |
027ea041 | 112 | int rv, res = count; |
b76cdba9 MW |
113 | struct bonding *bond; |
114 | struct bonding *nxt; | |
115 | ||
b76cdba9 MW |
116 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ |
117 | ifname = command + 1; | |
118 | if ((strlen(command) <= 1) || | |
119 | !dev_valid_name(ifname)) | |
120 | goto err_no_cmd; | |
121 | ||
122 | if (command[0] == '+') { | |
b76cdba9 MW |
123 | printk(KERN_INFO DRV_NAME |
124 | ": %s is being created...\n", ifname); | |
027ea041 JV |
125 | rv = bond_create(ifname, &bonding_defaults, &bond); |
126 | if (rv) { | |
127 | printk(KERN_INFO DRV_NAME ": Bond creation failed.\n"); | |
128 | res = rv; | |
b76cdba9 MW |
129 | } |
130 | goto out; | |
131 | } | |
132 | ||
133 | if (command[0] == '-') { | |
027ea041 JV |
134 | rtnl_lock(); |
135 | down_write(&bonding_rwsem); | |
136 | ||
b76cdba9 MW |
137 | list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) |
138 | if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { | |
b76cdba9 MW |
139 | /* check the ref count on the bond's kobject. |
140 | * If it's > expected, then there's a file open, | |
141 | * and we have to fail. | |
142 | */ | |
43cb76d9 | 143 | if (atomic_read(&bond->dev->dev.kobj.kref.refcount) |
b76cdba9 | 144 | > expected_refcount){ |
b76cdba9 MW |
145 | printk(KERN_INFO DRV_NAME |
146 | ": Unable remove bond %s due to open references.\n", | |
147 | ifname); | |
148 | res = -EPERM; | |
149 | goto out; | |
150 | } | |
151 | printk(KERN_INFO DRV_NAME | |
152 | ": %s is being deleted...\n", | |
153 | bond->dev->name); | |
d90a162a | 154 | bond_destroy(bond); |
027ea041 | 155 | up_write(&bonding_rwsem); |
b76cdba9 MW |
156 | rtnl_unlock(); |
157 | goto out; | |
158 | } | |
159 | ||
160 | printk(KERN_ERR DRV_NAME | |
161 | ": unable to delete non-existent bond %s\n", ifname); | |
162 | res = -ENODEV; | |
027ea041 JV |
163 | up_write(&bonding_rwsem); |
164 | rtnl_unlock(); | |
b76cdba9 MW |
165 | goto out; |
166 | } | |
167 | ||
168 | err_no_cmd: | |
169 | printk(KERN_ERR DRV_NAME | |
170 | ": no command found in bonding_masters. Use +ifname or -ifname.\n"); | |
171 | res = -EPERM; | |
172 | ||
173 | /* Always return either count or an error. If you return 0, you'll | |
174 | * get called forever, which is bad. | |
175 | */ | |
176 | out: | |
b76cdba9 MW |
177 | return res; |
178 | } | |
179 | /* class attribute for bond_masters file. This ends up in /sys/class/net */ | |
180 | static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO, | |
181 | bonding_show_bonds, bonding_store_bonds); | |
182 | ||
183 | int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave) | |
184 | { | |
185 | char linkname[IFNAMSIZ+7]; | |
186 | int ret = 0; | |
187 | ||
188 | /* first, create a link from the slave back to the master */ | |
43cb76d9 | 189 | ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj), |
b76cdba9 MW |
190 | "master"); |
191 | if (ret) | |
192 | return ret; | |
193 | /* next, create a link from the master to the slave */ | |
194 | sprintf(linkname,"slave_%s",slave->name); | |
43cb76d9 | 195 | ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj), |
b76cdba9 MW |
196 | linkname); |
197 | return ret; | |
198 | ||
199 | } | |
200 | ||
201 | void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave) | |
202 | { | |
203 | char linkname[IFNAMSIZ+7]; | |
204 | ||
43cb76d9 | 205 | sysfs_remove_link(&(slave->dev.kobj), "master"); |
b76cdba9 | 206 | sprintf(linkname,"slave_%s",slave->name); |
43cb76d9 | 207 | sysfs_remove_link(&(master->dev.kobj), linkname); |
b76cdba9 MW |
208 | } |
209 | ||
210 | ||
211 | /* | |
212 | * Show the slaves in the current bond. | |
213 | */ | |
43cb76d9 GKH |
214 | static ssize_t bonding_show_slaves(struct device *d, |
215 | struct device_attribute *attr, char *buf) | |
b76cdba9 MW |
216 | { |
217 | struct slave *slave; | |
218 | int i, res = 0; | |
43cb76d9 | 219 | struct bonding *bond = to_bond(d); |
b76cdba9 | 220 | |
6603a6f2 | 221 | read_lock(&bond->lock); |
b76cdba9 MW |
222 | bond_for_each_slave(bond, slave, i) { |
223 | if (res > (PAGE_SIZE - IFNAMSIZ)) { | |
224 | /* not enough space for another interface name */ | |
225 | if ((PAGE_SIZE - res) > 10) | |
226 | res = PAGE_SIZE - 10; | |
7bd46508 | 227 | res += sprintf(buf + res, "++more++ "); |
b76cdba9 MW |
228 | break; |
229 | } | |
230 | res += sprintf(buf + res, "%s ", slave->dev->name); | |
231 | } | |
6603a6f2 | 232 | read_unlock(&bond->lock); |
1dcdcd69 WF |
233 | if (res) |
234 | buf[res-1] = '\n'; /* eat the leftover space */ | |
b76cdba9 MW |
235 | return res; |
236 | } | |
237 | ||
238 | /* | |
239 | * Set the slaves in the current bond. The bond interface must be | |
240 | * up for this to succeed. | |
241 | * This function is largely the same flow as bonding_update_bonds(). | |
242 | */ | |
43cb76d9 GKH |
243 | static ssize_t bonding_store_slaves(struct device *d, |
244 | struct device_attribute *attr, | |
245 | const char *buffer, size_t count) | |
b76cdba9 MW |
246 | { |
247 | char command[IFNAMSIZ + 1] = { 0, }; | |
248 | char *ifname; | |
249 | int i, res, found, ret = count; | |
3158bf7d | 250 | u32 original_mtu; |
b76cdba9 | 251 | struct slave *slave; |
3418db7c | 252 | struct net_device *dev = NULL; |
43cb76d9 | 253 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
254 | |
255 | /* Quick sanity check -- is the bond interface up? */ | |
256 | if (!(bond->dev->flags & IFF_UP)) { | |
6b1bf096 MS |
257 | printk(KERN_WARNING DRV_NAME |
258 | ": %s: doing slave updates when interface is down.\n", | |
b76cdba9 | 259 | bond->dev->name); |
b76cdba9 MW |
260 | } |
261 | ||
262 | /* Note: We can't hold bond->lock here, as bond_create grabs it. */ | |
263 | ||
027ea041 JV |
264 | rtnl_lock(); |
265 | down_write(&(bonding_rwsem)); | |
266 | ||
b76cdba9 MW |
267 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ |
268 | ifname = command + 1; | |
269 | if ((strlen(command) <= 1) || | |
270 | !dev_valid_name(ifname)) | |
271 | goto err_no_cmd; | |
272 | ||
273 | if (command[0] == '+') { | |
274 | ||
275 | /* Got a slave name in ifname. Is it already in the list? */ | |
276 | found = 0; | |
6603a6f2 | 277 | read_lock(&bond->lock); |
b76cdba9 MW |
278 | bond_for_each_slave(bond, slave, i) |
279 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
280 | printk(KERN_ERR DRV_NAME | |
281 | ": %s: Interface %s is already enslaved!\n", | |
282 | bond->dev->name, ifname); | |
283 | ret = -EPERM; | |
6603a6f2 | 284 | read_unlock(&bond->lock); |
b76cdba9 MW |
285 | goto out; |
286 | } | |
287 | ||
6603a6f2 | 288 | read_unlock(&bond->lock); |
b76cdba9 MW |
289 | printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n", |
290 | bond->dev->name, ifname); | |
881d966b | 291 | dev = dev_get_by_name(&init_net, ifname); |
b76cdba9 MW |
292 | if (!dev) { |
293 | printk(KERN_INFO DRV_NAME | |
294 | ": %s: Interface %s does not exist!\n", | |
295 | bond->dev->name, ifname); | |
296 | ret = -EPERM; | |
297 | goto out; | |
298 | } | |
299 | else | |
300 | dev_put(dev); | |
301 | ||
302 | if (dev->flags & IFF_UP) { | |
303 | printk(KERN_ERR DRV_NAME | |
304 | ": %s: Error: Unable to enslave %s " | |
305 | "because it is already up.\n", | |
306 | bond->dev->name, dev->name); | |
307 | ret = -EPERM; | |
308 | goto out; | |
309 | } | |
310 | /* If this is the first slave, then we need to set | |
311 | the master's hardware address to be the same as the | |
312 | slave's. */ | |
313 | if (!(*((u32 *) & (bond->dev->dev_addr[0])))) { | |
314 | memcpy(bond->dev->dev_addr, dev->dev_addr, | |
315 | dev->addr_len); | |
316 | } | |
317 | ||
318 | /* Set the slave's MTU to match the bond */ | |
3158bf7d | 319 | original_mtu = dev->mtu; |
b76cdba9 MW |
320 | if (dev->mtu != bond->dev->mtu) { |
321 | if (dev->change_mtu) { | |
322 | res = dev->change_mtu(dev, | |
323 | bond->dev->mtu); | |
324 | if (res) { | |
325 | ret = res; | |
326 | goto out; | |
327 | } | |
328 | } else { | |
329 | dev->mtu = bond->dev->mtu; | |
330 | } | |
331 | } | |
b76cdba9 | 332 | res = bond_enslave(bond->dev, dev); |
3158bf7d MS |
333 | bond_for_each_slave(bond, slave, i) |
334 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) | |
335 | slave->original_mtu = original_mtu; | |
b76cdba9 MW |
336 | if (res) { |
337 | ret = res; | |
338 | } | |
339 | goto out; | |
340 | } | |
341 | ||
342 | if (command[0] == '-') { | |
343 | dev = NULL; | |
6952d892 | 344 | original_mtu = 0; |
b76cdba9 MW |
345 | bond_for_each_slave(bond, slave, i) |
346 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
347 | dev = slave->dev; | |
3158bf7d | 348 | original_mtu = slave->original_mtu; |
b76cdba9 MW |
349 | break; |
350 | } | |
351 | if (dev) { | |
352 | printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n", | |
353 | bond->dev->name, dev->name); | |
d90a162a MS |
354 | if (bond->setup_by_slave) |
355 | res = bond_release_and_destroy(bond->dev, dev); | |
356 | else | |
357 | res = bond_release(bond->dev, dev); | |
b76cdba9 MW |
358 | if (res) { |
359 | ret = res; | |
360 | goto out; | |
361 | } | |
362 | /* set the slave MTU to the default */ | |
363 | if (dev->change_mtu) { | |
3158bf7d | 364 | dev->change_mtu(dev, original_mtu); |
b76cdba9 | 365 | } else { |
3158bf7d | 366 | dev->mtu = original_mtu; |
b76cdba9 MW |
367 | } |
368 | } | |
369 | else { | |
370 | printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n", | |
371 | ifname, bond->dev->name); | |
372 | ret = -ENODEV; | |
373 | } | |
374 | goto out; | |
375 | } | |
376 | ||
377 | err_no_cmd: | |
378 | printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name); | |
379 | ret = -EPERM; | |
380 | ||
381 | out: | |
027ea041 JV |
382 | up_write(&(bonding_rwsem)); |
383 | rtnl_unlock(); | |
b76cdba9 MW |
384 | return ret; |
385 | } | |
386 | ||
43cb76d9 | 387 | static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves); |
b76cdba9 MW |
388 | |
389 | /* | |
390 | * Show and set the bonding mode. The bond interface must be down to | |
391 | * change the mode. | |
392 | */ | |
43cb76d9 GKH |
393 | static ssize_t bonding_show_mode(struct device *d, |
394 | struct device_attribute *attr, char *buf) | |
b76cdba9 | 395 | { |
43cb76d9 | 396 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
397 | |
398 | return sprintf(buf, "%s %d\n", | |
399 | bond_mode_tbl[bond->params.mode].modename, | |
7bd46508 | 400 | bond->params.mode); |
b76cdba9 MW |
401 | } |
402 | ||
43cb76d9 GKH |
403 | static ssize_t bonding_store_mode(struct device *d, |
404 | struct device_attribute *attr, | |
405 | const char *buf, size_t count) | |
b76cdba9 MW |
406 | { |
407 | int new_value, ret = count; | |
43cb76d9 | 408 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
409 | |
410 | if (bond->dev->flags & IFF_UP) { | |
411 | printk(KERN_ERR DRV_NAME | |
412 | ": unable to update mode of %s because interface is up.\n", | |
413 | bond->dev->name); | |
414 | ret = -EPERM; | |
415 | goto out; | |
416 | } | |
417 | ||
ece95f7f | 418 | new_value = bond_parse_parm(buf, bond_mode_tbl); |
b76cdba9 MW |
419 | if (new_value < 0) { |
420 | printk(KERN_ERR DRV_NAME | |
421 | ": %s: Ignoring invalid mode value %.*s.\n", | |
422 | bond->dev->name, | |
423 | (int)strlen(buf) - 1, buf); | |
424 | ret = -EINVAL; | |
425 | goto out; | |
426 | } else { | |
8f903c70 JV |
427 | if (bond->params.mode == BOND_MODE_8023AD) |
428 | bond_unset_master_3ad_flags(bond); | |
429 | ||
430 | if (bond->params.mode == BOND_MODE_ALB) | |
431 | bond_unset_master_alb_flags(bond); | |
432 | ||
b76cdba9 MW |
433 | bond->params.mode = new_value; |
434 | bond_set_mode_ops(bond, bond->params.mode); | |
435 | printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n", | |
436 | bond->dev->name, bond_mode_tbl[new_value].modename, new_value); | |
437 | } | |
438 | out: | |
439 | return ret; | |
440 | } | |
43cb76d9 | 441 | static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode); |
b76cdba9 MW |
442 | |
443 | /* | |
444 | * Show and set the bonding transmit hash method. The bond interface must be down to | |
445 | * change the xmit hash policy. | |
446 | */ | |
43cb76d9 GKH |
447 | static ssize_t bonding_show_xmit_hash(struct device *d, |
448 | struct device_attribute *attr, | |
449 | char *buf) | |
b76cdba9 | 450 | { |
43cb76d9 | 451 | struct bonding *bond = to_bond(d); |
b76cdba9 | 452 | |
8e4b9329 WF |
453 | return sprintf(buf, "%s %d\n", |
454 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
455 | bond->params.xmit_policy); | |
b76cdba9 MW |
456 | } |
457 | ||
43cb76d9 GKH |
458 | static ssize_t bonding_store_xmit_hash(struct device *d, |
459 | struct device_attribute *attr, | |
460 | const char *buf, size_t count) | |
b76cdba9 MW |
461 | { |
462 | int new_value, ret = count; | |
43cb76d9 | 463 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
464 | |
465 | if (bond->dev->flags & IFF_UP) { | |
466 | printk(KERN_ERR DRV_NAME | |
467 | "%s: Interface is up. Unable to update xmit policy.\n", | |
468 | bond->dev->name); | |
469 | ret = -EPERM; | |
470 | goto out; | |
471 | } | |
472 | ||
ece95f7f | 473 | new_value = bond_parse_parm(buf, xmit_hashtype_tbl); |
b76cdba9 MW |
474 | if (new_value < 0) { |
475 | printk(KERN_ERR DRV_NAME | |
476 | ": %s: Ignoring invalid xmit hash policy value %.*s.\n", | |
477 | bond->dev->name, | |
478 | (int)strlen(buf) - 1, buf); | |
479 | ret = -EINVAL; | |
480 | goto out; | |
481 | } else { | |
482 | bond->params.xmit_policy = new_value; | |
483 | bond_set_mode_ops(bond, bond->params.mode); | |
484 | printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n", | |
485 | bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value); | |
486 | } | |
487 | out: | |
488 | return ret; | |
489 | } | |
43cb76d9 | 490 | static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash); |
b76cdba9 | 491 | |
f5b2b966 JV |
492 | /* |
493 | * Show and set arp_validate. | |
494 | */ | |
43cb76d9 GKH |
495 | static ssize_t bonding_show_arp_validate(struct device *d, |
496 | struct device_attribute *attr, | |
497 | char *buf) | |
f5b2b966 | 498 | { |
43cb76d9 | 499 | struct bonding *bond = to_bond(d); |
f5b2b966 JV |
500 | |
501 | return sprintf(buf, "%s %d\n", | |
502 | arp_validate_tbl[bond->params.arp_validate].modename, | |
7bd46508 | 503 | bond->params.arp_validate); |
f5b2b966 JV |
504 | } |
505 | ||
43cb76d9 GKH |
506 | static ssize_t bonding_store_arp_validate(struct device *d, |
507 | struct device_attribute *attr, | |
508 | const char *buf, size_t count) | |
f5b2b966 JV |
509 | { |
510 | int new_value; | |
43cb76d9 | 511 | struct bonding *bond = to_bond(d); |
f5b2b966 | 512 | |
ece95f7f | 513 | new_value = bond_parse_parm(buf, arp_validate_tbl); |
f5b2b966 JV |
514 | if (new_value < 0) { |
515 | printk(KERN_ERR DRV_NAME | |
516 | ": %s: Ignoring invalid arp_validate value %s\n", | |
517 | bond->dev->name, buf); | |
518 | return -EINVAL; | |
519 | } | |
520 | if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { | |
521 | printk(KERN_ERR DRV_NAME | |
522 | ": %s: arp_validate only supported in active-backup mode.\n", | |
523 | bond->dev->name); | |
524 | return -EINVAL; | |
525 | } | |
526 | printk(KERN_INFO DRV_NAME ": %s: setting arp_validate to %s (%d).\n", | |
527 | bond->dev->name, arp_validate_tbl[new_value].modename, | |
528 | new_value); | |
529 | ||
530 | if (!bond->params.arp_validate && new_value) { | |
531 | bond_register_arp(bond); | |
532 | } else if (bond->params.arp_validate && !new_value) { | |
533 | bond_unregister_arp(bond); | |
534 | } | |
535 | ||
536 | bond->params.arp_validate = new_value; | |
537 | ||
538 | return count; | |
539 | } | |
540 | ||
43cb76d9 | 541 | static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate, bonding_store_arp_validate); |
f5b2b966 | 542 | |
dd957c57 JV |
543 | /* |
544 | * Show and store fail_over_mac. User only allowed to change the | |
545 | * value when there are no slaves. | |
546 | */ | |
547 | static ssize_t bonding_show_fail_over_mac(struct device *d, struct device_attribute *attr, char *buf) | |
548 | { | |
549 | struct bonding *bond = to_bond(d); | |
550 | ||
551 | return sprintf(buf, "%d\n", bond->params.fail_over_mac) + 1; | |
552 | } | |
553 | ||
554 | static ssize_t bonding_store_fail_over_mac(struct device *d, struct device_attribute *attr, const char *buf, size_t count) | |
555 | { | |
556 | int new_value; | |
557 | int ret = count; | |
558 | struct bonding *bond = to_bond(d); | |
559 | ||
560 | if (bond->slave_cnt != 0) { | |
561 | printk(KERN_ERR DRV_NAME | |
562 | ": %s: Can't alter fail_over_mac with slaves in bond.\n", | |
563 | bond->dev->name); | |
564 | ret = -EPERM; | |
565 | goto out; | |
566 | } | |
567 | ||
568 | if (sscanf(buf, "%d", &new_value) != 1) { | |
569 | printk(KERN_ERR DRV_NAME | |
570 | ": %s: no fail_over_mac value specified.\n", | |
571 | bond->dev->name); | |
572 | ret = -EINVAL; | |
573 | goto out; | |
574 | } | |
575 | ||
576 | if ((new_value == 0) || (new_value == 1)) { | |
577 | bond->params.fail_over_mac = new_value; | |
578 | printk(KERN_INFO DRV_NAME ": %s: Setting fail_over_mac to %d.\n", | |
579 | bond->dev->name, new_value); | |
580 | } else { | |
581 | printk(KERN_INFO DRV_NAME | |
582 | ": %s: Ignoring invalid fail_over_mac value %d.\n", | |
583 | bond->dev->name, new_value); | |
584 | } | |
585 | out: | |
586 | return ret; | |
587 | } | |
588 | ||
589 | static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR, bonding_show_fail_over_mac, bonding_store_fail_over_mac); | |
590 | ||
b76cdba9 MW |
591 | /* |
592 | * Show and set the arp timer interval. There are two tricky bits | |
593 | * here. First, if ARP monitoring is activated, then we must disable | |
594 | * MII monitoring. Second, if the ARP timer isn't running, we must | |
595 | * start it. | |
596 | */ | |
43cb76d9 GKH |
597 | static ssize_t bonding_show_arp_interval(struct device *d, |
598 | struct device_attribute *attr, | |
599 | char *buf) | |
b76cdba9 | 600 | { |
43cb76d9 | 601 | struct bonding *bond = to_bond(d); |
b76cdba9 | 602 | |
7bd46508 | 603 | return sprintf(buf, "%d\n", bond->params.arp_interval); |
b76cdba9 MW |
604 | } |
605 | ||
43cb76d9 GKH |
606 | static ssize_t bonding_store_arp_interval(struct device *d, |
607 | struct device_attribute *attr, | |
608 | const char *buf, size_t count) | |
b76cdba9 MW |
609 | { |
610 | int new_value, ret = count; | |
43cb76d9 | 611 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
612 | |
613 | if (sscanf(buf, "%d", &new_value) != 1) { | |
614 | printk(KERN_ERR DRV_NAME | |
615 | ": %s: no arp_interval value specified.\n", | |
616 | bond->dev->name); | |
617 | ret = -EINVAL; | |
618 | goto out; | |
619 | } | |
620 | if (new_value < 0) { | |
621 | printk(KERN_ERR DRV_NAME | |
622 | ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n", | |
623 | bond->dev->name, new_value, INT_MAX); | |
624 | ret = -EINVAL; | |
625 | goto out; | |
626 | } | |
627 | ||
628 | printk(KERN_INFO DRV_NAME | |
629 | ": %s: Setting ARP monitoring interval to %d.\n", | |
630 | bond->dev->name, new_value); | |
631 | bond->params.arp_interval = new_value; | |
632 | if (bond->params.miimon) { | |
633 | printk(KERN_INFO DRV_NAME | |
634 | ": %s: ARP monitoring cannot be used with MII monitoring. " | |
635 | "%s Disabling MII monitoring.\n", | |
636 | bond->dev->name, bond->dev->name); | |
637 | bond->params.miimon = 0; | |
1b76b316 JV |
638 | if (delayed_work_pending(&bond->mii_work)) { |
639 | cancel_delayed_work(&bond->mii_work); | |
640 | flush_workqueue(bond->wq); | |
b76cdba9 MW |
641 | } |
642 | } | |
643 | if (!bond->params.arp_targets[0]) { | |
644 | printk(KERN_INFO DRV_NAME | |
645 | ": %s: ARP monitoring has been set up, " | |
646 | "but no ARP targets have been specified.\n", | |
647 | bond->dev->name); | |
648 | } | |
649 | if (bond->dev->flags & IFF_UP) { | |
650 | /* If the interface is up, we may need to fire off | |
651 | * the ARP timer. If the interface is down, the | |
652 | * timer will get fired off when the open function | |
653 | * is called. | |
654 | */ | |
1b76b316 JV |
655 | if (!delayed_work_pending(&bond->arp_work)) { |
656 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) | |
657 | INIT_DELAYED_WORK(&bond->arp_work, | |
658 | bond_activebackup_arp_mon); | |
659 | else | |
660 | INIT_DELAYED_WORK(&bond->arp_work, | |
661 | bond_loadbalance_arp_mon); | |
662 | ||
663 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
b76cdba9 MW |
664 | } |
665 | } | |
666 | ||
667 | out: | |
668 | return ret; | |
669 | } | |
43cb76d9 | 670 | static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR , bonding_show_arp_interval, bonding_store_arp_interval); |
b76cdba9 MW |
671 | |
672 | /* | |
673 | * Show and set the arp targets. | |
674 | */ | |
43cb76d9 GKH |
675 | static ssize_t bonding_show_arp_targets(struct device *d, |
676 | struct device_attribute *attr, | |
677 | char *buf) | |
b76cdba9 MW |
678 | { |
679 | int i, res = 0; | |
43cb76d9 | 680 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
681 | |
682 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { | |
683 | if (bond->params.arp_targets[i]) | |
684 | res += sprintf(buf + res, "%u.%u.%u.%u ", | |
685 | NIPQUAD(bond->params.arp_targets[i])); | |
686 | } | |
1dcdcd69 WF |
687 | if (res) |
688 | buf[res-1] = '\n'; /* eat the leftover space */ | |
b76cdba9 MW |
689 | return res; |
690 | } | |
691 | ||
43cb76d9 GKH |
692 | static ssize_t bonding_store_arp_targets(struct device *d, |
693 | struct device_attribute *attr, | |
694 | const char *buf, size_t count) | |
b76cdba9 | 695 | { |
d3bb52b0 | 696 | __be32 newtarget; |
b76cdba9 | 697 | int i = 0, done = 0, ret = count; |
43cb76d9 | 698 | struct bonding *bond = to_bond(d); |
d3bb52b0 | 699 | __be32 *targets; |
b76cdba9 MW |
700 | |
701 | targets = bond->params.arp_targets; | |
702 | newtarget = in_aton(buf + 1); | |
703 | /* look for adds */ | |
704 | if (buf[0] == '+') { | |
d3bb52b0 | 705 | if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) { |
b76cdba9 MW |
706 | printk(KERN_ERR DRV_NAME |
707 | ": %s: invalid ARP target %u.%u.%u.%u specified for addition\n", | |
708 | bond->dev->name, NIPQUAD(newtarget)); | |
709 | ret = -EINVAL; | |
710 | goto out; | |
711 | } | |
712 | /* look for an empty slot to put the target in, and check for dupes */ | |
713 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
714 | if (targets[i] == newtarget) { /* duplicate */ | |
715 | printk(KERN_ERR DRV_NAME | |
716 | ": %s: ARP target %u.%u.%u.%u is already present\n", | |
717 | bond->dev->name, NIPQUAD(newtarget)); | |
718 | if (done) | |
719 | targets[i] = 0; | |
720 | ret = -EINVAL; | |
721 | goto out; | |
722 | } | |
723 | if (targets[i] == 0 && !done) { | |
724 | printk(KERN_INFO DRV_NAME | |
725 | ": %s: adding ARP target %d.%d.%d.%d.\n", | |
726 | bond->dev->name, NIPQUAD(newtarget)); | |
727 | done = 1; | |
728 | targets[i] = newtarget; | |
729 | } | |
730 | } | |
731 | if (!done) { | |
732 | printk(KERN_ERR DRV_NAME | |
733 | ": %s: ARP target table is full!\n", | |
734 | bond->dev->name); | |
735 | ret = -EINVAL; | |
736 | goto out; | |
737 | } | |
738 | ||
739 | } | |
740 | else if (buf[0] == '-') { | |
d3bb52b0 | 741 | if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) { |
b76cdba9 MW |
742 | printk(KERN_ERR DRV_NAME |
743 | ": %s: invalid ARP target %d.%d.%d.%d specified for removal\n", | |
744 | bond->dev->name, NIPQUAD(newtarget)); | |
745 | ret = -EINVAL; | |
746 | goto out; | |
747 | } | |
748 | ||
749 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
750 | if (targets[i] == newtarget) { | |
751 | printk(KERN_INFO DRV_NAME | |
752 | ": %s: removing ARP target %d.%d.%d.%d.\n", | |
753 | bond->dev->name, NIPQUAD(newtarget)); | |
754 | targets[i] = 0; | |
755 | done = 1; | |
756 | } | |
757 | } | |
758 | if (!done) { | |
759 | printk(KERN_INFO DRV_NAME | |
760 | ": %s: unable to remove nonexistent ARP target %d.%d.%d.%d.\n", | |
761 | bond->dev->name, NIPQUAD(newtarget)); | |
762 | ret = -EINVAL; | |
763 | goto out; | |
764 | } | |
765 | } | |
766 | else { | |
767 | printk(KERN_ERR DRV_NAME ": no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n", | |
768 | bond->dev->name); | |
769 | ret = -EPERM; | |
770 | goto out; | |
771 | } | |
772 | ||
773 | out: | |
774 | return ret; | |
775 | } | |
43cb76d9 | 776 | static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets); |
b76cdba9 MW |
777 | |
778 | /* | |
779 | * Show and set the up and down delays. These must be multiples of the | |
780 | * MII monitoring value, and are stored internally as the multiplier. | |
781 | * Thus, we must translate to MS for the real world. | |
782 | */ | |
43cb76d9 GKH |
783 | static ssize_t bonding_show_downdelay(struct device *d, |
784 | struct device_attribute *attr, | |
785 | char *buf) | |
b76cdba9 | 786 | { |
43cb76d9 | 787 | struct bonding *bond = to_bond(d); |
b76cdba9 | 788 | |
7bd46508 | 789 | return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon); |
b76cdba9 MW |
790 | } |
791 | ||
43cb76d9 GKH |
792 | static ssize_t bonding_store_downdelay(struct device *d, |
793 | struct device_attribute *attr, | |
794 | const char *buf, size_t count) | |
b76cdba9 MW |
795 | { |
796 | int new_value, ret = count; | |
43cb76d9 | 797 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
798 | |
799 | if (!(bond->params.miimon)) { | |
800 | printk(KERN_ERR DRV_NAME | |
801 | ": %s: Unable to set down delay as MII monitoring is disabled\n", | |
802 | bond->dev->name); | |
803 | ret = -EPERM; | |
804 | goto out; | |
805 | } | |
806 | ||
807 | if (sscanf(buf, "%d", &new_value) != 1) { | |
808 | printk(KERN_ERR DRV_NAME | |
809 | ": %s: no down delay value specified.\n", | |
810 | bond->dev->name); | |
811 | ret = -EINVAL; | |
812 | goto out; | |
813 | } | |
814 | if (new_value < 0) { | |
815 | printk(KERN_ERR DRV_NAME | |
816 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
817 | bond->dev->name, new_value, 1, INT_MAX); | |
818 | ret = -EINVAL; | |
819 | goto out; | |
820 | } else { | |
821 | if ((new_value % bond->params.miimon) != 0) { | |
822 | printk(KERN_WARNING DRV_NAME | |
823 | ": %s: Warning: down delay (%d) is not a multiple " | |
824 | "of miimon (%d), delay rounded to %d ms\n", | |
825 | bond->dev->name, new_value, bond->params.miimon, | |
826 | (new_value / bond->params.miimon) * | |
827 | bond->params.miimon); | |
828 | } | |
829 | bond->params.downdelay = new_value / bond->params.miimon; | |
830 | printk(KERN_INFO DRV_NAME ": %s: Setting down delay to %d.\n", | |
831 | bond->dev->name, bond->params.downdelay * bond->params.miimon); | |
832 | ||
833 | } | |
834 | ||
835 | out: | |
836 | return ret; | |
837 | } | |
43cb76d9 | 838 | static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay); |
b76cdba9 | 839 | |
43cb76d9 GKH |
840 | static ssize_t bonding_show_updelay(struct device *d, |
841 | struct device_attribute *attr, | |
842 | char *buf) | |
b76cdba9 | 843 | { |
43cb76d9 | 844 | struct bonding *bond = to_bond(d); |
b76cdba9 | 845 | |
7bd46508 | 846 | return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon); |
b76cdba9 MW |
847 | |
848 | } | |
849 | ||
43cb76d9 GKH |
850 | static ssize_t bonding_store_updelay(struct device *d, |
851 | struct device_attribute *attr, | |
852 | const char *buf, size_t count) | |
b76cdba9 MW |
853 | { |
854 | int new_value, ret = count; | |
43cb76d9 | 855 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
856 | |
857 | if (!(bond->params.miimon)) { | |
858 | printk(KERN_ERR DRV_NAME | |
859 | ": %s: Unable to set up delay as MII monitoring is disabled\n", | |
860 | bond->dev->name); | |
861 | ret = -EPERM; | |
862 | goto out; | |
863 | } | |
864 | ||
865 | if (sscanf(buf, "%d", &new_value) != 1) { | |
866 | printk(KERN_ERR DRV_NAME | |
867 | ": %s: no up delay value specified.\n", | |
868 | bond->dev->name); | |
869 | ret = -EINVAL; | |
870 | goto out; | |
871 | } | |
872 | if (new_value < 0) { | |
873 | printk(KERN_ERR DRV_NAME | |
874 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
875 | bond->dev->name, new_value, 1, INT_MAX); | |
876 | ret = -EINVAL; | |
877 | goto out; | |
878 | } else { | |
879 | if ((new_value % bond->params.miimon) != 0) { | |
880 | printk(KERN_WARNING DRV_NAME | |
881 | ": %s: Warning: up delay (%d) is not a multiple " | |
882 | "of miimon (%d), updelay rounded to %d ms\n", | |
883 | bond->dev->name, new_value, bond->params.miimon, | |
884 | (new_value / bond->params.miimon) * | |
885 | bond->params.miimon); | |
886 | } | |
887 | bond->params.updelay = new_value / bond->params.miimon; | |
888 | printk(KERN_INFO DRV_NAME ": %s: Setting up delay to %d.\n", | |
889 | bond->dev->name, bond->params.updelay * bond->params.miimon); | |
890 | ||
891 | } | |
892 | ||
893 | out: | |
894 | return ret; | |
895 | } | |
43cb76d9 | 896 | static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR , bonding_show_updelay, bonding_store_updelay); |
b76cdba9 MW |
897 | |
898 | /* | |
899 | * Show and set the LACP interval. Interface must be down, and the mode | |
900 | * must be set to 802.3ad mode. | |
901 | */ | |
43cb76d9 GKH |
902 | static ssize_t bonding_show_lacp(struct device *d, |
903 | struct device_attribute *attr, | |
904 | char *buf) | |
b76cdba9 | 905 | { |
43cb76d9 | 906 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
907 | |
908 | return sprintf(buf, "%s %d\n", | |
909 | bond_lacp_tbl[bond->params.lacp_fast].modename, | |
7bd46508 | 910 | bond->params.lacp_fast); |
b76cdba9 MW |
911 | } |
912 | ||
43cb76d9 GKH |
913 | static ssize_t bonding_store_lacp(struct device *d, |
914 | struct device_attribute *attr, | |
915 | const char *buf, size_t count) | |
b76cdba9 MW |
916 | { |
917 | int new_value, ret = count; | |
43cb76d9 | 918 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
919 | |
920 | if (bond->dev->flags & IFF_UP) { | |
921 | printk(KERN_ERR DRV_NAME | |
922 | ": %s: Unable to update LACP rate because interface is up.\n", | |
923 | bond->dev->name); | |
924 | ret = -EPERM; | |
925 | goto out; | |
926 | } | |
927 | ||
928 | if (bond->params.mode != BOND_MODE_8023AD) { | |
929 | printk(KERN_ERR DRV_NAME | |
930 | ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n", | |
931 | bond->dev->name); | |
932 | ret = -EPERM; | |
933 | goto out; | |
934 | } | |
935 | ||
ece95f7f | 936 | new_value = bond_parse_parm(buf, bond_lacp_tbl); |
b76cdba9 MW |
937 | |
938 | if ((new_value == 1) || (new_value == 0)) { | |
939 | bond->params.lacp_fast = new_value; | |
940 | printk(KERN_INFO DRV_NAME | |
941 | ": %s: Setting LACP rate to %s (%d).\n", | |
942 | bond->dev->name, bond_lacp_tbl[new_value].modename, new_value); | |
943 | } else { | |
944 | printk(KERN_ERR DRV_NAME | |
945 | ": %s: Ignoring invalid LACP rate value %.*s.\n", | |
946 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
947 | ret = -EINVAL; | |
948 | } | |
949 | out: | |
950 | return ret; | |
951 | } | |
43cb76d9 | 952 | static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp); |
b76cdba9 MW |
953 | |
954 | /* | |
955 | * Show and set the MII monitor interval. There are two tricky bits | |
956 | * here. First, if MII monitoring is activated, then we must disable | |
957 | * ARP monitoring. Second, if the timer isn't running, we must | |
958 | * start it. | |
959 | */ | |
43cb76d9 GKH |
960 | static ssize_t bonding_show_miimon(struct device *d, |
961 | struct device_attribute *attr, | |
962 | char *buf) | |
b76cdba9 | 963 | { |
43cb76d9 | 964 | struct bonding *bond = to_bond(d); |
b76cdba9 | 965 | |
7bd46508 | 966 | return sprintf(buf, "%d\n", bond->params.miimon); |
b76cdba9 MW |
967 | } |
968 | ||
43cb76d9 GKH |
969 | static ssize_t bonding_store_miimon(struct device *d, |
970 | struct device_attribute *attr, | |
971 | const char *buf, size_t count) | |
b76cdba9 MW |
972 | { |
973 | int new_value, ret = count; | |
43cb76d9 | 974 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
975 | |
976 | if (sscanf(buf, "%d", &new_value) != 1) { | |
977 | printk(KERN_ERR DRV_NAME | |
978 | ": %s: no miimon value specified.\n", | |
979 | bond->dev->name); | |
980 | ret = -EINVAL; | |
981 | goto out; | |
982 | } | |
983 | if (new_value < 0) { | |
984 | printk(KERN_ERR DRV_NAME | |
985 | ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n", | |
986 | bond->dev->name, new_value, 1, INT_MAX); | |
987 | ret = -EINVAL; | |
988 | goto out; | |
989 | } else { | |
990 | printk(KERN_INFO DRV_NAME | |
991 | ": %s: Setting MII monitoring interval to %d.\n", | |
992 | bond->dev->name, new_value); | |
993 | bond->params.miimon = new_value; | |
994 | if(bond->params.updelay) | |
995 | printk(KERN_INFO DRV_NAME | |
996 | ": %s: Note: Updating updelay (to %d) " | |
997 | "since it is a multiple of the miimon value.\n", | |
998 | bond->dev->name, | |
999 | bond->params.updelay * bond->params.miimon); | |
1000 | if(bond->params.downdelay) | |
1001 | printk(KERN_INFO DRV_NAME | |
1002 | ": %s: Note: Updating downdelay (to %d) " | |
1003 | "since it is a multiple of the miimon value.\n", | |
1004 | bond->dev->name, | |
1005 | bond->params.downdelay * bond->params.miimon); | |
1006 | if (bond->params.arp_interval) { | |
1007 | printk(KERN_INFO DRV_NAME | |
1008 | ": %s: MII monitoring cannot be used with " | |
1009 | "ARP monitoring. Disabling ARP monitoring...\n", | |
1010 | bond->dev->name); | |
1011 | bond->params.arp_interval = 0; | |
f5b2b966 JV |
1012 | if (bond->params.arp_validate) { |
1013 | bond_unregister_arp(bond); | |
1014 | bond->params.arp_validate = | |
1015 | BOND_ARP_VALIDATE_NONE; | |
1016 | } | |
1b76b316 JV |
1017 | if (delayed_work_pending(&bond->arp_work)) { |
1018 | cancel_delayed_work(&bond->arp_work); | |
1019 | flush_workqueue(bond->wq); | |
b76cdba9 MW |
1020 | } |
1021 | } | |
1022 | ||
1023 | if (bond->dev->flags & IFF_UP) { | |
1024 | /* If the interface is up, we may need to fire off | |
1025 | * the MII timer. If the interface is down, the | |
1026 | * timer will get fired off when the open function | |
1027 | * is called. | |
1028 | */ | |
1b76b316 JV |
1029 | if (!delayed_work_pending(&bond->mii_work)) { |
1030 | INIT_DELAYED_WORK(&bond->mii_work, | |
1031 | bond_mii_monitor); | |
1032 | queue_delayed_work(bond->wq, | |
1033 | &bond->mii_work, 0); | |
b76cdba9 MW |
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) | |
7bd46508 | 1057 | count = sprintf(buf, "%s\n", bond->primary_slave->dev->name); |
b76cdba9 MW |
1058 | |
1059 | return count; | |
1060 | } | |
1061 | ||
43cb76d9 GKH |
1062 | static ssize_t bonding_store_primary(struct device *d, |
1063 | struct device_attribute *attr, | |
1064 | const char *buf, size_t count) | |
b76cdba9 MW |
1065 | { |
1066 | int i; | |
1067 | struct slave *slave; | |
43cb76d9 | 1068 | struct bonding *bond = to_bond(d); |
b76cdba9 | 1069 | |
e934dd78 JV |
1070 | rtnl_lock(); |
1071 | read_lock(&bond->lock); | |
1072 | write_lock_bh(&bond->curr_slave_lock); | |
1073 | ||
b76cdba9 MW |
1074 | if (!USES_PRIMARY(bond->params.mode)) { |
1075 | printk(KERN_INFO DRV_NAME | |
1076 | ": %s: Unable to set primary slave; %s is in mode %d\n", | |
1077 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1078 | } else { | |
1079 | bond_for_each_slave(bond, slave, i) { | |
1080 | if (strnicmp | |
1081 | (slave->dev->name, buf, | |
1082 | strlen(slave->dev->name)) == 0) { | |
1083 | printk(KERN_INFO DRV_NAME | |
1084 | ": %s: Setting %s as primary slave.\n", | |
1085 | bond->dev->name, slave->dev->name); | |
1086 | bond->primary_slave = slave; | |
1087 | bond_select_active_slave(bond); | |
1088 | goto out; | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | /* if we got here, then we didn't match the name of any slave */ | |
1093 | ||
1094 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1095 | printk(KERN_INFO DRV_NAME | |
1096 | ": %s: Setting primary slave to None.\n", | |
1097 | bond->dev->name); | |
3418db7c | 1098 | bond->primary_slave = NULL; |
b76cdba9 MW |
1099 | bond_select_active_slave(bond); |
1100 | } else { | |
1101 | printk(KERN_INFO DRV_NAME | |
1102 | ": %s: Unable to set %.*s as primary slave as it is not a slave.\n", | |
1103 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1104 | } | |
1105 | } | |
1106 | out: | |
e934dd78 JV |
1107 | write_unlock_bh(&bond->curr_slave_lock); |
1108 | read_unlock(&bond->lock); | |
6603a6f2 JV |
1109 | rtnl_unlock(); |
1110 | ||
b76cdba9 MW |
1111 | return count; |
1112 | } | |
43cb76d9 | 1113 | static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, bonding_show_primary, bonding_store_primary); |
b76cdba9 MW |
1114 | |
1115 | /* | |
1116 | * Show and set the use_carrier flag. | |
1117 | */ | |
43cb76d9 GKH |
1118 | static ssize_t bonding_show_carrier(struct device *d, |
1119 | struct device_attribute *attr, | |
1120 | char *buf) | |
b76cdba9 | 1121 | { |
43cb76d9 | 1122 | struct bonding *bond = to_bond(d); |
b76cdba9 | 1123 | |
7bd46508 | 1124 | return sprintf(buf, "%d\n", bond->params.use_carrier); |
b76cdba9 MW |
1125 | } |
1126 | ||
43cb76d9 GKH |
1127 | static ssize_t bonding_store_carrier(struct device *d, |
1128 | struct device_attribute *attr, | |
1129 | const char *buf, size_t count) | |
b76cdba9 MW |
1130 | { |
1131 | int new_value, ret = count; | |
43cb76d9 | 1132 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1133 | |
1134 | ||
1135 | if (sscanf(buf, "%d", &new_value) != 1) { | |
1136 | printk(KERN_ERR DRV_NAME | |
1137 | ": %s: no use_carrier value specified.\n", | |
1138 | bond->dev->name); | |
1139 | ret = -EINVAL; | |
1140 | goto out; | |
1141 | } | |
1142 | if ((new_value == 0) || (new_value == 1)) { | |
1143 | bond->params.use_carrier = new_value; | |
1144 | printk(KERN_INFO DRV_NAME ": %s: Setting use_carrier to %d.\n", | |
1145 | bond->dev->name, new_value); | |
1146 | } else { | |
1147 | printk(KERN_INFO DRV_NAME | |
1148 | ": %s: Ignoring invalid use_carrier value %d.\n", | |
1149 | bond->dev->name, new_value); | |
1150 | } | |
1151 | out: | |
1152 | return count; | |
1153 | } | |
43cb76d9 | 1154 | static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, bonding_show_carrier, bonding_store_carrier); |
b76cdba9 MW |
1155 | |
1156 | ||
1157 | /* | |
1158 | * Show and set currently active_slave. | |
1159 | */ | |
43cb76d9 GKH |
1160 | static ssize_t bonding_show_active_slave(struct device *d, |
1161 | struct device_attribute *attr, | |
1162 | char *buf) | |
b76cdba9 MW |
1163 | { |
1164 | struct slave *curr; | |
43cb76d9 | 1165 | struct bonding *bond = to_bond(d); |
16cd0160 | 1166 | int count = 0; |
b76cdba9 | 1167 | |
b76cdba9 MW |
1168 | read_lock(&bond->curr_slave_lock); |
1169 | curr = bond->curr_active_slave; | |
1170 | read_unlock(&bond->curr_slave_lock); | |
1171 | ||
1172 | if (USES_PRIMARY(bond->params.mode) && curr) | |
7bd46508 | 1173 | count = sprintf(buf, "%s\n", curr->dev->name); |
b76cdba9 MW |
1174 | return count; |
1175 | } | |
1176 | ||
43cb76d9 GKH |
1177 | static ssize_t bonding_store_active_slave(struct device *d, |
1178 | struct device_attribute *attr, | |
1179 | const char *buf, size_t count) | |
b76cdba9 MW |
1180 | { |
1181 | int i; | |
1182 | struct slave *slave; | |
1183 | struct slave *old_active = NULL; | |
1184 | struct slave *new_active = NULL; | |
43cb76d9 | 1185 | struct bonding *bond = to_bond(d); |
b76cdba9 | 1186 | |
1466a219 | 1187 | rtnl_lock(); |
e934dd78 JV |
1188 | read_lock(&bond->lock); |
1189 | write_lock_bh(&bond->curr_slave_lock); | |
1466a219 | 1190 | |
b76cdba9 MW |
1191 | if (!USES_PRIMARY(bond->params.mode)) { |
1192 | printk(KERN_INFO DRV_NAME | |
1193 | ": %s: Unable to change active slave; %s is in mode %d\n", | |
1194 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1195 | } else { | |
1196 | bond_for_each_slave(bond, slave, i) { | |
1197 | if (strnicmp | |
1198 | (slave->dev->name, buf, | |
1199 | strlen(slave->dev->name)) == 0) { | |
1200 | old_active = bond->curr_active_slave; | |
1201 | new_active = slave; | |
a50d8de2 | 1202 | if (new_active == old_active) { |
b76cdba9 MW |
1203 | /* do nothing */ |
1204 | printk(KERN_INFO DRV_NAME | |
1205 | ": %s: %s is already the current active slave.\n", | |
1206 | bond->dev->name, slave->dev->name); | |
1207 | goto out; | |
1208 | } | |
1209 | else { | |
1210 | if ((new_active) && | |
1211 | (old_active) && | |
1212 | (new_active->link == BOND_LINK_UP) && | |
1213 | IS_UP(new_active->dev)) { | |
1214 | printk(KERN_INFO DRV_NAME | |
1215 | ": %s: Setting %s as active slave.\n", | |
1216 | bond->dev->name, slave->dev->name); | |
1217 | bond_change_active_slave(bond, new_active); | |
1218 | } | |
1219 | else { | |
1220 | printk(KERN_INFO DRV_NAME | |
1221 | ": %s: Could not set %s as active slave; " | |
1222 | "either %s is down or the link is down.\n", | |
1223 | bond->dev->name, slave->dev->name, | |
1224 | slave->dev->name); | |
1225 | } | |
1226 | goto out; | |
1227 | } | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | /* if we got here, then we didn't match the name of any slave */ | |
1232 | ||
1233 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1234 | printk(KERN_INFO DRV_NAME | |
1235 | ": %s: Setting active slave to None.\n", | |
1236 | bond->dev->name); | |
3418db7c | 1237 | bond->primary_slave = NULL; |
b76cdba9 MW |
1238 | bond_select_active_slave(bond); |
1239 | } else { | |
1240 | printk(KERN_INFO DRV_NAME | |
1241 | ": %s: Unable to set %.*s as active slave as it is not a slave.\n", | |
1242 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1243 | } | |
1244 | } | |
1245 | out: | |
e934dd78 JV |
1246 | write_unlock_bh(&bond->curr_slave_lock); |
1247 | read_unlock(&bond->lock); | |
6603a6f2 JV |
1248 | rtnl_unlock(); |
1249 | ||
b76cdba9 MW |
1250 | return count; |
1251 | ||
1252 | } | |
43cb76d9 | 1253 | static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, bonding_show_active_slave, bonding_store_active_slave); |
b76cdba9 MW |
1254 | |
1255 | ||
1256 | /* | |
1257 | * Show link status of the bond interface. | |
1258 | */ | |
43cb76d9 GKH |
1259 | static ssize_t bonding_show_mii_status(struct device *d, |
1260 | struct device_attribute *attr, | |
1261 | char *buf) | |
b76cdba9 MW |
1262 | { |
1263 | struct slave *curr; | |
43cb76d9 | 1264 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1265 | |
1266 | read_lock(&bond->curr_slave_lock); | |
1267 | curr = bond->curr_active_slave; | |
1268 | read_unlock(&bond->curr_slave_lock); | |
1269 | ||
7bd46508 | 1270 | return sprintf(buf, "%s\n", (curr) ? "up" : "down"); |
b76cdba9 | 1271 | } |
43cb76d9 | 1272 | static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL); |
b76cdba9 MW |
1273 | |
1274 | ||
1275 | /* | |
1276 | * Show current 802.3ad aggregator ID. | |
1277 | */ | |
43cb76d9 GKH |
1278 | static ssize_t bonding_show_ad_aggregator(struct device *d, |
1279 | struct device_attribute *attr, | |
1280 | char *buf) | |
b76cdba9 MW |
1281 | { |
1282 | int count = 0; | |
43cb76d9 | 1283 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1284 | |
1285 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1286 | struct ad_info ad_info; | |
7bd46508 | 1287 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id); |
b76cdba9 | 1288 | } |
b76cdba9 MW |
1289 | |
1290 | return count; | |
1291 | } | |
43cb76d9 | 1292 | static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL); |
b76cdba9 MW |
1293 | |
1294 | ||
1295 | /* | |
1296 | * Show number of active 802.3ad ports. | |
1297 | */ | |
43cb76d9 GKH |
1298 | static ssize_t bonding_show_ad_num_ports(struct device *d, |
1299 | struct device_attribute *attr, | |
1300 | char *buf) | |
b76cdba9 MW |
1301 | { |
1302 | int count = 0; | |
43cb76d9 | 1303 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1304 | |
1305 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1306 | struct ad_info ad_info; | |
7bd46508 | 1307 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports); |
b76cdba9 | 1308 | } |
b76cdba9 MW |
1309 | |
1310 | return count; | |
1311 | } | |
43cb76d9 | 1312 | static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL); |
b76cdba9 MW |
1313 | |
1314 | ||
1315 | /* | |
1316 | * Show current 802.3ad actor key. | |
1317 | */ | |
43cb76d9 GKH |
1318 | static ssize_t bonding_show_ad_actor_key(struct device *d, |
1319 | struct device_attribute *attr, | |
1320 | char *buf) | |
b76cdba9 MW |
1321 | { |
1322 | int count = 0; | |
43cb76d9 | 1323 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1324 | |
1325 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1326 | struct ad_info ad_info; | |
7bd46508 | 1327 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key); |
b76cdba9 | 1328 | } |
b76cdba9 MW |
1329 | |
1330 | return count; | |
1331 | } | |
43cb76d9 | 1332 | static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL); |
b76cdba9 MW |
1333 | |
1334 | ||
1335 | /* | |
1336 | * Show current 802.3ad partner key. | |
1337 | */ | |
43cb76d9 GKH |
1338 | static ssize_t bonding_show_ad_partner_key(struct device *d, |
1339 | struct device_attribute *attr, | |
1340 | char *buf) | |
b76cdba9 MW |
1341 | { |
1342 | int count = 0; | |
43cb76d9 | 1343 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1344 | |
1345 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1346 | struct ad_info ad_info; | |
7bd46508 | 1347 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key); |
b76cdba9 | 1348 | } |
b76cdba9 MW |
1349 | |
1350 | return count; | |
1351 | } | |
43cb76d9 | 1352 | static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL); |
b76cdba9 MW |
1353 | |
1354 | ||
1355 | /* | |
1356 | * Show current 802.3ad partner mac. | |
1357 | */ | |
43cb76d9 GKH |
1358 | static ssize_t bonding_show_ad_partner_mac(struct device *d, |
1359 | struct device_attribute *attr, | |
1360 | char *buf) | |
b76cdba9 MW |
1361 | { |
1362 | int count = 0; | |
43cb76d9 | 1363 | struct bonding *bond = to_bond(d); |
0795af57 | 1364 | DECLARE_MAC_BUF(mac); |
b76cdba9 MW |
1365 | |
1366 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1367 | struct ad_info ad_info; | |
1368 | if (!bond_3ad_get_active_agg_info(bond, &ad_info)) { | |
0795af57 | 1369 | count = sprintf(buf,"%s\n", |
7bd46508 | 1370 | print_mac(mac, ad_info.partner_system)); |
b76cdba9 MW |
1371 | } |
1372 | } | |
b76cdba9 MW |
1373 | |
1374 | return count; | |
1375 | } | |
43cb76d9 | 1376 | static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL); |
b76cdba9 MW |
1377 | |
1378 | ||
1379 | ||
1380 | static struct attribute *per_bond_attrs[] = { | |
43cb76d9 GKH |
1381 | &dev_attr_slaves.attr, |
1382 | &dev_attr_mode.attr, | |
dd957c57 | 1383 | &dev_attr_fail_over_mac.attr, |
43cb76d9 GKH |
1384 | &dev_attr_arp_validate.attr, |
1385 | &dev_attr_arp_interval.attr, | |
1386 | &dev_attr_arp_ip_target.attr, | |
1387 | &dev_attr_downdelay.attr, | |
1388 | &dev_attr_updelay.attr, | |
1389 | &dev_attr_lacp_rate.attr, | |
1390 | &dev_attr_xmit_hash_policy.attr, | |
1391 | &dev_attr_miimon.attr, | |
1392 | &dev_attr_primary.attr, | |
1393 | &dev_attr_use_carrier.attr, | |
1394 | &dev_attr_active_slave.attr, | |
1395 | &dev_attr_mii_status.attr, | |
1396 | &dev_attr_ad_aggregator.attr, | |
1397 | &dev_attr_ad_num_ports.attr, | |
1398 | &dev_attr_ad_actor_key.attr, | |
1399 | &dev_attr_ad_partner_key.attr, | |
1400 | &dev_attr_ad_partner_mac.attr, | |
b76cdba9 MW |
1401 | NULL, |
1402 | }; | |
1403 | ||
1404 | static struct attribute_group bonding_group = { | |
1405 | .name = "bonding", | |
1406 | .attrs = per_bond_attrs, | |
1407 | }; | |
1408 | ||
1409 | /* | |
1410 | * Initialize sysfs. This sets up the bonding_masters file in | |
1411 | * /sys/class/net. | |
1412 | */ | |
1413 | int bond_create_sysfs(void) | |
1414 | { | |
1415 | int ret = 0; | |
1416 | struct bonding *firstbond; | |
1417 | ||
b76cdba9 MW |
1418 | /* get the netdev class pointer */ |
1419 | firstbond = container_of(bond_dev_list.next, struct bonding, bond_list); | |
1420 | if (!firstbond) | |
1421 | return -ENODEV; | |
1422 | ||
43cb76d9 | 1423 | netdev_class = firstbond->dev->dev.class; |
b76cdba9 MW |
1424 | if (!netdev_class) |
1425 | return -ENODEV; | |
1426 | ||
1427 | ret = class_create_file(netdev_class, &class_attr_bonding_masters); | |
877cbd36 JV |
1428 | /* |
1429 | * Permit multiple loads of the module by ignoring failures to | |
1430 | * create the bonding_masters sysfs file. Bonding devices | |
1431 | * created by second or subsequent loads of the module will | |
1432 | * not be listed in, or controllable by, bonding_masters, but | |
1433 | * will have the usual "bonding" sysfs directory. | |
1434 | * | |
1435 | * This is done to preserve backwards compatibility for | |
1436 | * initscripts/sysconfig, which load bonding multiple times to | |
1437 | * configure multiple bonding devices. | |
1438 | */ | |
1439 | if (ret == -EEXIST) { | |
1440 | netdev_class = NULL; | |
1441 | return 0; | |
1442 | } | |
b76cdba9 MW |
1443 | |
1444 | return ret; | |
1445 | ||
1446 | } | |
1447 | ||
1448 | /* | |
1449 | * Remove /sys/class/net/bonding_masters. | |
1450 | */ | |
1451 | void bond_destroy_sysfs(void) | |
1452 | { | |
1453 | if (netdev_class) | |
1454 | class_remove_file(netdev_class, &class_attr_bonding_masters); | |
1455 | } | |
1456 | ||
1457 | /* | |
1458 | * Initialize sysfs for each bond. This sets up and registers | |
1459 | * the 'bondctl' directory for each individual bond under /sys/class/net. | |
1460 | */ | |
1461 | int bond_create_sysfs_entry(struct bonding *bond) | |
1462 | { | |
1463 | struct net_device *dev = bond->dev; | |
1464 | int err; | |
1465 | ||
43cb76d9 | 1466 | err = sysfs_create_group(&(dev->dev.kobj), &bonding_group); |
b76cdba9 MW |
1467 | if (err) { |
1468 | printk(KERN_EMERG "eek! didn't create group!\n"); | |
1469 | } | |
1470 | ||
1471 | if (expected_refcount < 1) | |
43cb76d9 | 1472 | expected_refcount = atomic_read(&bond->dev->dev.kobj.kref.refcount); |
b76cdba9 MW |
1473 | |
1474 | return err; | |
1475 | } | |
1476 | /* | |
1477 | * Remove sysfs entries for each bond. | |
1478 | */ | |
1479 | void bond_destroy_sysfs_entry(struct bonding *bond) | |
1480 | { | |
1481 | struct net_device *dev = bond->dev; | |
1482 | ||
43cb76d9 | 1483 | sysfs_remove_group(&(dev->dev.kobj), &bonding_group); |
b76cdba9 MW |
1484 | } |
1485 |