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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[]; |
3915c1e8 | 53 | extern struct bond_parm_tbl fail_over_mac_tbl[]; |
b76cdba9 MW |
54 | |
55 | static int expected_refcount = -1; | |
b76cdba9 MW |
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 | 113 | struct bonding *bond; |
b76cdba9 | 114 | |
b76cdba9 MW |
115 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ |
116 | ifname = command + 1; | |
117 | if ((strlen(command) <= 1) || | |
118 | !dev_valid_name(ifname)) | |
119 | goto err_no_cmd; | |
120 | ||
121 | if (command[0] == '+') { | |
b76cdba9 MW |
122 | printk(KERN_INFO DRV_NAME |
123 | ": %s is being created...\n", ifname); | |
0dd646fe | 124 | rv = bond_create(ifname, &bonding_defaults); |
027ea041 JV |
125 | if (rv) { |
126 | printk(KERN_INFO DRV_NAME ": Bond creation failed.\n"); | |
127 | res = rv; | |
b76cdba9 MW |
128 | } |
129 | goto out; | |
130 | } | |
131 | ||
132 | if (command[0] == '-') { | |
027ea041 JV |
133 | rtnl_lock(); |
134 | down_write(&bonding_rwsem); | |
135 | ||
0883beca | 136 | list_for_each_entry(bond, &bond_dev_list, bond_list) |
b76cdba9 | 137 | if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { |
b76cdba9 MW |
138 | /* check the ref count on the bond's kobject. |
139 | * If it's > expected, then there's a file open, | |
140 | * and we have to fail. | |
141 | */ | |
43cb76d9 | 142 | if (atomic_read(&bond->dev->dev.kobj.kref.refcount) |
b76cdba9 | 143 | > expected_refcount){ |
b76cdba9 MW |
144 | printk(KERN_INFO DRV_NAME |
145 | ": Unable remove bond %s due to open references.\n", | |
146 | ifname); | |
147 | res = -EPERM; | |
c4ebc66a | 148 | goto out_unlock; |
b76cdba9 MW |
149 | } |
150 | printk(KERN_INFO DRV_NAME | |
151 | ": %s is being deleted...\n", | |
152 | bond->dev->name); | |
d90a162a | 153 | bond_destroy(bond); |
c4ebc66a | 154 | goto out_unlock; |
b76cdba9 MW |
155 | } |
156 | ||
157 | printk(KERN_ERR DRV_NAME | |
158 | ": unable to delete non-existent bond %s\n", ifname); | |
159 | res = -ENODEV; | |
c4ebc66a | 160 | goto out_unlock; |
b76cdba9 MW |
161 | } |
162 | ||
163 | err_no_cmd: | |
164 | printk(KERN_ERR DRV_NAME | |
165 | ": no command found in bonding_masters. Use +ifname or -ifname.\n"); | |
c4ebc66a JV |
166 | return -EPERM; |
167 | ||
168 | out_unlock: | |
169 | up_write(&bonding_rwsem); | |
170 | rtnl_unlock(); | |
b76cdba9 MW |
171 | |
172 | /* Always return either count or an error. If you return 0, you'll | |
173 | * get called forever, which is bad. | |
174 | */ | |
175 | out: | |
b76cdba9 MW |
176 | return res; |
177 | } | |
178 | /* class attribute for bond_masters file. This ends up in /sys/class/net */ | |
179 | static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO, | |
180 | bonding_show_bonds, bonding_store_bonds); | |
181 | ||
182 | int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave) | |
183 | { | |
184 | char linkname[IFNAMSIZ+7]; | |
185 | int ret = 0; | |
186 | ||
187 | /* first, create a link from the slave back to the master */ | |
43cb76d9 | 188 | ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj), |
b76cdba9 MW |
189 | "master"); |
190 | if (ret) | |
191 | return ret; | |
192 | /* next, create a link from the master to the slave */ | |
193 | sprintf(linkname,"slave_%s",slave->name); | |
43cb76d9 | 194 | ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj), |
b76cdba9 MW |
195 | linkname); |
196 | return ret; | |
197 | ||
198 | } | |
199 | ||
200 | void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave) | |
201 | { | |
202 | char linkname[IFNAMSIZ+7]; | |
203 | ||
43cb76d9 | 204 | sysfs_remove_link(&(slave->dev.kobj), "master"); |
b76cdba9 | 205 | sprintf(linkname,"slave_%s",slave->name); |
43cb76d9 | 206 | sysfs_remove_link(&(master->dev.kobj), linkname); |
b76cdba9 MW |
207 | } |
208 | ||
209 | ||
210 | /* | |
211 | * Show the slaves in the current bond. | |
212 | */ | |
43cb76d9 GKH |
213 | static ssize_t bonding_show_slaves(struct device *d, |
214 | struct device_attribute *attr, char *buf) | |
b76cdba9 MW |
215 | { |
216 | struct slave *slave; | |
217 | int i, res = 0; | |
43cb76d9 | 218 | struct bonding *bond = to_bond(d); |
b76cdba9 | 219 | |
6603a6f2 | 220 | read_lock(&bond->lock); |
b76cdba9 MW |
221 | bond_for_each_slave(bond, slave, i) { |
222 | if (res > (PAGE_SIZE - IFNAMSIZ)) { | |
223 | /* not enough space for another interface name */ | |
224 | if ((PAGE_SIZE - res) > 10) | |
225 | res = PAGE_SIZE - 10; | |
7bd46508 | 226 | res += sprintf(buf + res, "++more++ "); |
b76cdba9 MW |
227 | break; |
228 | } | |
229 | res += sprintf(buf + res, "%s ", slave->dev->name); | |
230 | } | |
6603a6f2 | 231 | read_unlock(&bond->lock); |
1dcdcd69 WF |
232 | if (res) |
233 | buf[res-1] = '\n'; /* eat the leftover space */ | |
b76cdba9 MW |
234 | return res; |
235 | } | |
236 | ||
237 | /* | |
238 | * Set the slaves in the current bond. The bond interface must be | |
239 | * up for this to succeed. | |
240 | * This function is largely the same flow as bonding_update_bonds(). | |
241 | */ | |
43cb76d9 GKH |
242 | static ssize_t bonding_store_slaves(struct device *d, |
243 | struct device_attribute *attr, | |
244 | const char *buffer, size_t count) | |
b76cdba9 MW |
245 | { |
246 | char command[IFNAMSIZ + 1] = { 0, }; | |
247 | char *ifname; | |
248 | int i, res, found, ret = count; | |
3158bf7d | 249 | u32 original_mtu; |
b76cdba9 | 250 | struct slave *slave; |
3418db7c | 251 | struct net_device *dev = NULL; |
43cb76d9 | 252 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
253 | |
254 | /* Quick sanity check -- is the bond interface up? */ | |
255 | if (!(bond->dev->flags & IFF_UP)) { | |
6b1bf096 MS |
256 | printk(KERN_WARNING DRV_NAME |
257 | ": %s: doing slave updates when interface is down.\n", | |
b76cdba9 | 258 | bond->dev->name); |
b76cdba9 MW |
259 | } |
260 | ||
261 | /* Note: We can't hold bond->lock here, as bond_create grabs it. */ | |
262 | ||
027ea041 JV |
263 | rtnl_lock(); |
264 | down_write(&(bonding_rwsem)); | |
265 | ||
b76cdba9 MW |
266 | sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ |
267 | ifname = command + 1; | |
268 | if ((strlen(command) <= 1) || | |
269 | !dev_valid_name(ifname)) | |
270 | goto err_no_cmd; | |
271 | ||
272 | if (command[0] == '+') { | |
273 | ||
274 | /* Got a slave name in ifname. Is it already in the list? */ | |
275 | found = 0; | |
6603a6f2 | 276 | read_lock(&bond->lock); |
b76cdba9 MW |
277 | bond_for_each_slave(bond, slave, i) |
278 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
279 | printk(KERN_ERR DRV_NAME | |
280 | ": %s: Interface %s is already enslaved!\n", | |
281 | bond->dev->name, ifname); | |
282 | ret = -EPERM; | |
6603a6f2 | 283 | read_unlock(&bond->lock); |
b76cdba9 MW |
284 | goto out; |
285 | } | |
286 | ||
6603a6f2 | 287 | read_unlock(&bond->lock); |
b76cdba9 MW |
288 | printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n", |
289 | bond->dev->name, ifname); | |
881d966b | 290 | dev = dev_get_by_name(&init_net, ifname); |
b76cdba9 MW |
291 | if (!dev) { |
292 | printk(KERN_INFO DRV_NAME | |
293 | ": %s: Interface %s does not exist!\n", | |
294 | bond->dev->name, ifname); | |
295 | ret = -EPERM; | |
296 | goto out; | |
297 | } | |
298 | else | |
299 | dev_put(dev); | |
300 | ||
301 | if (dev->flags & IFF_UP) { | |
302 | printk(KERN_ERR DRV_NAME | |
303 | ": %s: Error: Unable to enslave %s " | |
304 | "because it is already up.\n", | |
305 | bond->dev->name, dev->name); | |
306 | ret = -EPERM; | |
307 | goto out; | |
308 | } | |
309 | /* If this is the first slave, then we need to set | |
310 | the master's hardware address to be the same as the | |
311 | slave's. */ | |
312 | if (!(*((u32 *) & (bond->dev->dev_addr[0])))) { | |
313 | memcpy(bond->dev->dev_addr, dev->dev_addr, | |
314 | dev->addr_len); | |
315 | } | |
316 | ||
317 | /* Set the slave's MTU to match the bond */ | |
3158bf7d | 318 | original_mtu = dev->mtu; |
b76cdba9 MW |
319 | if (dev->mtu != bond->dev->mtu) { |
320 | if (dev->change_mtu) { | |
321 | res = dev->change_mtu(dev, | |
322 | bond->dev->mtu); | |
323 | if (res) { | |
324 | ret = res; | |
325 | goto out; | |
326 | } | |
327 | } else { | |
328 | dev->mtu = bond->dev->mtu; | |
329 | } | |
330 | } | |
b76cdba9 | 331 | res = bond_enslave(bond->dev, dev); |
3158bf7d MS |
332 | bond_for_each_slave(bond, slave, i) |
333 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) | |
334 | slave->original_mtu = original_mtu; | |
b76cdba9 MW |
335 | if (res) { |
336 | ret = res; | |
337 | } | |
338 | goto out; | |
339 | } | |
340 | ||
341 | if (command[0] == '-') { | |
342 | dev = NULL; | |
6952d892 | 343 | original_mtu = 0; |
b76cdba9 MW |
344 | bond_for_each_slave(bond, slave, i) |
345 | if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { | |
346 | dev = slave->dev; | |
3158bf7d | 347 | original_mtu = slave->original_mtu; |
b76cdba9 MW |
348 | break; |
349 | } | |
350 | if (dev) { | |
351 | printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n", | |
352 | bond->dev->name, dev->name); | |
d90a162a | 353 | res = bond_release(bond->dev, dev); |
b76cdba9 MW |
354 | if (res) { |
355 | ret = res; | |
356 | goto out; | |
357 | } | |
358 | /* set the slave MTU to the default */ | |
359 | if (dev->change_mtu) { | |
3158bf7d | 360 | dev->change_mtu(dev, original_mtu); |
b76cdba9 | 361 | } else { |
3158bf7d | 362 | dev->mtu = original_mtu; |
b76cdba9 MW |
363 | } |
364 | } | |
365 | else { | |
366 | printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n", | |
367 | ifname, bond->dev->name); | |
368 | ret = -ENODEV; | |
369 | } | |
370 | goto out; | |
371 | } | |
372 | ||
373 | err_no_cmd: | |
374 | printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name); | |
375 | ret = -EPERM; | |
376 | ||
377 | out: | |
027ea041 JV |
378 | up_write(&(bonding_rwsem)); |
379 | rtnl_unlock(); | |
b76cdba9 MW |
380 | return ret; |
381 | } | |
382 | ||
43cb76d9 | 383 | static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves); |
b76cdba9 MW |
384 | |
385 | /* | |
386 | * Show and set the bonding mode. The bond interface must be down to | |
387 | * change the mode. | |
388 | */ | |
43cb76d9 GKH |
389 | static ssize_t bonding_show_mode(struct device *d, |
390 | struct device_attribute *attr, char *buf) | |
b76cdba9 | 391 | { |
43cb76d9 | 392 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
393 | |
394 | return sprintf(buf, "%s %d\n", | |
395 | bond_mode_tbl[bond->params.mode].modename, | |
7bd46508 | 396 | bond->params.mode); |
b76cdba9 MW |
397 | } |
398 | ||
43cb76d9 GKH |
399 | static ssize_t bonding_store_mode(struct device *d, |
400 | struct device_attribute *attr, | |
401 | const char *buf, size_t count) | |
b76cdba9 MW |
402 | { |
403 | int new_value, ret = count; | |
43cb76d9 | 404 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
405 | |
406 | if (bond->dev->flags & IFF_UP) { | |
407 | printk(KERN_ERR DRV_NAME | |
408 | ": unable to update mode of %s because interface is up.\n", | |
409 | bond->dev->name); | |
410 | ret = -EPERM; | |
411 | goto out; | |
412 | } | |
413 | ||
ece95f7f | 414 | new_value = bond_parse_parm(buf, bond_mode_tbl); |
b76cdba9 MW |
415 | if (new_value < 0) { |
416 | printk(KERN_ERR DRV_NAME | |
417 | ": %s: Ignoring invalid mode value %.*s.\n", | |
418 | bond->dev->name, | |
419 | (int)strlen(buf) - 1, buf); | |
420 | ret = -EINVAL; | |
421 | goto out; | |
422 | } else { | |
8f903c70 JV |
423 | if (bond->params.mode == BOND_MODE_8023AD) |
424 | bond_unset_master_3ad_flags(bond); | |
425 | ||
426 | if (bond->params.mode == BOND_MODE_ALB) | |
427 | bond_unset_master_alb_flags(bond); | |
428 | ||
b76cdba9 MW |
429 | bond->params.mode = new_value; |
430 | bond_set_mode_ops(bond, bond->params.mode); | |
431 | printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n", | |
432 | bond->dev->name, bond_mode_tbl[new_value].modename, new_value); | |
433 | } | |
434 | out: | |
435 | return ret; | |
436 | } | |
43cb76d9 | 437 | static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode); |
b76cdba9 MW |
438 | |
439 | /* | |
440 | * Show and set the bonding transmit hash method. The bond interface must be down to | |
441 | * change the xmit hash policy. | |
442 | */ | |
43cb76d9 GKH |
443 | static ssize_t bonding_show_xmit_hash(struct device *d, |
444 | struct device_attribute *attr, | |
445 | char *buf) | |
b76cdba9 | 446 | { |
43cb76d9 | 447 | struct bonding *bond = to_bond(d); |
b76cdba9 | 448 | |
8e4b9329 WF |
449 | return sprintf(buf, "%s %d\n", |
450 | xmit_hashtype_tbl[bond->params.xmit_policy].modename, | |
451 | bond->params.xmit_policy); | |
b76cdba9 MW |
452 | } |
453 | ||
43cb76d9 GKH |
454 | static ssize_t bonding_store_xmit_hash(struct device *d, |
455 | struct device_attribute *attr, | |
456 | const char *buf, size_t count) | |
b76cdba9 MW |
457 | { |
458 | int new_value, ret = count; | |
43cb76d9 | 459 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
460 | |
461 | if (bond->dev->flags & IFF_UP) { | |
462 | printk(KERN_ERR DRV_NAME | |
463 | "%s: Interface is up. Unable to update xmit policy.\n", | |
464 | bond->dev->name); | |
465 | ret = -EPERM; | |
466 | goto out; | |
467 | } | |
468 | ||
ece95f7f | 469 | new_value = bond_parse_parm(buf, xmit_hashtype_tbl); |
b76cdba9 MW |
470 | if (new_value < 0) { |
471 | printk(KERN_ERR DRV_NAME | |
472 | ": %s: Ignoring invalid xmit hash policy value %.*s.\n", | |
473 | bond->dev->name, | |
474 | (int)strlen(buf) - 1, buf); | |
475 | ret = -EINVAL; | |
476 | goto out; | |
477 | } else { | |
478 | bond->params.xmit_policy = new_value; | |
479 | bond_set_mode_ops(bond, bond->params.mode); | |
480 | printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n", | |
481 | bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value); | |
482 | } | |
483 | out: | |
484 | return ret; | |
485 | } | |
43cb76d9 | 486 | static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash); |
b76cdba9 | 487 | |
f5b2b966 JV |
488 | /* |
489 | * Show and set arp_validate. | |
490 | */ | |
43cb76d9 GKH |
491 | static ssize_t bonding_show_arp_validate(struct device *d, |
492 | struct device_attribute *attr, | |
493 | char *buf) | |
f5b2b966 | 494 | { |
43cb76d9 | 495 | struct bonding *bond = to_bond(d); |
f5b2b966 JV |
496 | |
497 | return sprintf(buf, "%s %d\n", | |
498 | arp_validate_tbl[bond->params.arp_validate].modename, | |
7bd46508 | 499 | bond->params.arp_validate); |
f5b2b966 JV |
500 | } |
501 | ||
43cb76d9 GKH |
502 | static ssize_t bonding_store_arp_validate(struct device *d, |
503 | struct device_attribute *attr, | |
504 | const char *buf, size_t count) | |
f5b2b966 JV |
505 | { |
506 | int new_value; | |
43cb76d9 | 507 | struct bonding *bond = to_bond(d); |
f5b2b966 | 508 | |
ece95f7f | 509 | new_value = bond_parse_parm(buf, arp_validate_tbl); |
f5b2b966 JV |
510 | if (new_value < 0) { |
511 | printk(KERN_ERR DRV_NAME | |
512 | ": %s: Ignoring invalid arp_validate value %s\n", | |
513 | bond->dev->name, buf); | |
514 | return -EINVAL; | |
515 | } | |
516 | if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { | |
517 | printk(KERN_ERR DRV_NAME | |
518 | ": %s: arp_validate only supported in active-backup mode.\n", | |
519 | bond->dev->name); | |
520 | return -EINVAL; | |
521 | } | |
522 | printk(KERN_INFO DRV_NAME ": %s: setting arp_validate to %s (%d).\n", | |
523 | bond->dev->name, arp_validate_tbl[new_value].modename, | |
524 | new_value); | |
525 | ||
526 | if (!bond->params.arp_validate && new_value) { | |
527 | bond_register_arp(bond); | |
528 | } else if (bond->params.arp_validate && !new_value) { | |
529 | bond_unregister_arp(bond); | |
530 | } | |
531 | ||
532 | bond->params.arp_validate = new_value; | |
533 | ||
534 | return count; | |
535 | } | |
536 | ||
43cb76d9 | 537 | static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate, bonding_store_arp_validate); |
f5b2b966 | 538 | |
dd957c57 JV |
539 | /* |
540 | * Show and store fail_over_mac. User only allowed to change the | |
541 | * value when there are no slaves. | |
542 | */ | |
543 | static ssize_t bonding_show_fail_over_mac(struct device *d, struct device_attribute *attr, char *buf) | |
544 | { | |
545 | struct bonding *bond = to_bond(d); | |
546 | ||
3915c1e8 JV |
547 | return sprintf(buf, "%s %d\n", |
548 | fail_over_mac_tbl[bond->params.fail_over_mac].modename, | |
549 | bond->params.fail_over_mac); | |
dd957c57 JV |
550 | } |
551 | ||
552 | static ssize_t bonding_store_fail_over_mac(struct device *d, struct device_attribute *attr, const char *buf, size_t count) | |
553 | { | |
554 | int new_value; | |
dd957c57 JV |
555 | struct bonding *bond = to_bond(d); |
556 | ||
557 | if (bond->slave_cnt != 0) { | |
558 | printk(KERN_ERR DRV_NAME | |
559 | ": %s: Can't alter fail_over_mac with slaves in bond.\n", | |
560 | bond->dev->name); | |
3915c1e8 | 561 | return -EPERM; |
dd957c57 JV |
562 | } |
563 | ||
3915c1e8 JV |
564 | new_value = bond_parse_parm(buf, fail_over_mac_tbl); |
565 | if (new_value < 0) { | |
dd957c57 | 566 | printk(KERN_ERR DRV_NAME |
3915c1e8 JV |
567 | ": %s: Ignoring invalid fail_over_mac value %s.\n", |
568 | bond->dev->name, buf); | |
569 | return -EINVAL; | |
dd957c57 JV |
570 | } |
571 | ||
3915c1e8 JV |
572 | bond->params.fail_over_mac = new_value; |
573 | printk(KERN_INFO DRV_NAME ": %s: Setting fail_over_mac to %s (%d).\n", | |
574 | bond->dev->name, fail_over_mac_tbl[new_value].modename, | |
575 | new_value); | |
576 | ||
577 | return count; | |
dd957c57 JV |
578 | } |
579 | ||
580 | static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR, bonding_show_fail_over_mac, bonding_store_fail_over_mac); | |
581 | ||
b76cdba9 MW |
582 | /* |
583 | * Show and set the arp timer interval. There are two tricky bits | |
584 | * here. First, if ARP monitoring is activated, then we must disable | |
585 | * MII monitoring. Second, if the ARP timer isn't running, we must | |
586 | * start it. | |
587 | */ | |
43cb76d9 GKH |
588 | static ssize_t bonding_show_arp_interval(struct device *d, |
589 | struct device_attribute *attr, | |
590 | char *buf) | |
b76cdba9 | 591 | { |
43cb76d9 | 592 | struct bonding *bond = to_bond(d); |
b76cdba9 | 593 | |
7bd46508 | 594 | return sprintf(buf, "%d\n", bond->params.arp_interval); |
b76cdba9 MW |
595 | } |
596 | ||
43cb76d9 GKH |
597 | static ssize_t bonding_store_arp_interval(struct device *d, |
598 | struct device_attribute *attr, | |
599 | const char *buf, size_t count) | |
b76cdba9 MW |
600 | { |
601 | int new_value, ret = count; | |
43cb76d9 | 602 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
603 | |
604 | if (sscanf(buf, "%d", &new_value) != 1) { | |
605 | printk(KERN_ERR DRV_NAME | |
606 | ": %s: no arp_interval value specified.\n", | |
607 | bond->dev->name); | |
608 | ret = -EINVAL; | |
609 | goto out; | |
610 | } | |
611 | if (new_value < 0) { | |
612 | printk(KERN_ERR DRV_NAME | |
613 | ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n", | |
614 | bond->dev->name, new_value, INT_MAX); | |
615 | ret = -EINVAL; | |
616 | goto out; | |
617 | } | |
618 | ||
619 | printk(KERN_INFO DRV_NAME | |
620 | ": %s: Setting ARP monitoring interval to %d.\n", | |
621 | bond->dev->name, new_value); | |
622 | bond->params.arp_interval = new_value; | |
623 | if (bond->params.miimon) { | |
624 | printk(KERN_INFO DRV_NAME | |
625 | ": %s: ARP monitoring cannot be used with MII monitoring. " | |
626 | "%s Disabling MII monitoring.\n", | |
627 | bond->dev->name, bond->dev->name); | |
628 | bond->params.miimon = 0; | |
1b76b316 JV |
629 | if (delayed_work_pending(&bond->mii_work)) { |
630 | cancel_delayed_work(&bond->mii_work); | |
631 | flush_workqueue(bond->wq); | |
b76cdba9 MW |
632 | } |
633 | } | |
634 | if (!bond->params.arp_targets[0]) { | |
635 | printk(KERN_INFO DRV_NAME | |
636 | ": %s: ARP monitoring has been set up, " | |
637 | "but no ARP targets have been specified.\n", | |
638 | bond->dev->name); | |
639 | } | |
640 | if (bond->dev->flags & IFF_UP) { | |
641 | /* If the interface is up, we may need to fire off | |
642 | * the ARP timer. If the interface is down, the | |
643 | * timer will get fired off when the open function | |
644 | * is called. | |
645 | */ | |
1b76b316 JV |
646 | if (!delayed_work_pending(&bond->arp_work)) { |
647 | if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) | |
648 | INIT_DELAYED_WORK(&bond->arp_work, | |
649 | bond_activebackup_arp_mon); | |
650 | else | |
651 | INIT_DELAYED_WORK(&bond->arp_work, | |
652 | bond_loadbalance_arp_mon); | |
653 | ||
654 | queue_delayed_work(bond->wq, &bond->arp_work, 0); | |
b76cdba9 MW |
655 | } |
656 | } | |
657 | ||
658 | out: | |
659 | return ret; | |
660 | } | |
43cb76d9 | 661 | static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR , bonding_show_arp_interval, bonding_store_arp_interval); |
b76cdba9 MW |
662 | |
663 | /* | |
664 | * Show and set the arp targets. | |
665 | */ | |
43cb76d9 GKH |
666 | static ssize_t bonding_show_arp_targets(struct device *d, |
667 | struct device_attribute *attr, | |
668 | char *buf) | |
b76cdba9 MW |
669 | { |
670 | int i, res = 0; | |
43cb76d9 | 671 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
672 | |
673 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { | |
674 | if (bond->params.arp_targets[i]) | |
63779436 HH |
675 | res += sprintf(buf + res, "%pI4 ", |
676 | &bond->params.arp_targets[i]); | |
b76cdba9 | 677 | } |
1dcdcd69 WF |
678 | if (res) |
679 | buf[res-1] = '\n'; /* eat the leftover space */ | |
b76cdba9 MW |
680 | return res; |
681 | } | |
682 | ||
43cb76d9 GKH |
683 | static ssize_t bonding_store_arp_targets(struct device *d, |
684 | struct device_attribute *attr, | |
685 | const char *buf, size_t count) | |
b76cdba9 | 686 | { |
d3bb52b0 | 687 | __be32 newtarget; |
b76cdba9 | 688 | int i = 0, done = 0, ret = count; |
43cb76d9 | 689 | struct bonding *bond = to_bond(d); |
d3bb52b0 | 690 | __be32 *targets; |
b76cdba9 MW |
691 | |
692 | targets = bond->params.arp_targets; | |
693 | newtarget = in_aton(buf + 1); | |
694 | /* look for adds */ | |
695 | if (buf[0] == '+') { | |
d3bb52b0 | 696 | if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) { |
b76cdba9 | 697 | printk(KERN_ERR DRV_NAME |
63779436 HH |
698 | ": %s: invalid ARP target %pI4 specified for addition\n", |
699 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
700 | ret = -EINVAL; |
701 | goto out; | |
702 | } | |
703 | /* look for an empty slot to put the target in, and check for dupes */ | |
704 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
705 | if (targets[i] == newtarget) { /* duplicate */ | |
706 | printk(KERN_ERR DRV_NAME | |
63779436 HH |
707 | ": %s: ARP target %pI4 is already present\n", |
708 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
709 | if (done) |
710 | targets[i] = 0; | |
711 | ret = -EINVAL; | |
712 | goto out; | |
713 | } | |
714 | if (targets[i] == 0 && !done) { | |
715 | printk(KERN_INFO DRV_NAME | |
63779436 HH |
716 | ": %s: adding ARP target %pI4.\n", |
717 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
718 | done = 1; |
719 | targets[i] = newtarget; | |
720 | } | |
721 | } | |
722 | if (!done) { | |
723 | printk(KERN_ERR DRV_NAME | |
724 | ": %s: ARP target table is full!\n", | |
725 | bond->dev->name); | |
726 | ret = -EINVAL; | |
727 | goto out; | |
728 | } | |
729 | ||
730 | } | |
731 | else if (buf[0] == '-') { | |
d3bb52b0 | 732 | if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) { |
b76cdba9 | 733 | printk(KERN_ERR DRV_NAME |
63779436 HH |
734 | ": %s: invalid ARP target %pI4 specified for removal\n", |
735 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
736 | ret = -EINVAL; |
737 | goto out; | |
738 | } | |
739 | ||
740 | for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { | |
741 | if (targets[i] == newtarget) { | |
742 | printk(KERN_INFO DRV_NAME | |
63779436 HH |
743 | ": %s: removing ARP target %pI4.\n", |
744 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
745 | targets[i] = 0; |
746 | done = 1; | |
747 | } | |
748 | } | |
749 | if (!done) { | |
750 | printk(KERN_INFO DRV_NAME | |
63779436 HH |
751 | ": %s: unable to remove nonexistent ARP target %pI4.\n", |
752 | bond->dev->name, &newtarget); | |
b76cdba9 MW |
753 | ret = -EINVAL; |
754 | goto out; | |
755 | } | |
756 | } | |
757 | else { | |
758 | printk(KERN_ERR DRV_NAME ": no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n", | |
759 | bond->dev->name); | |
760 | ret = -EPERM; | |
761 | goto out; | |
762 | } | |
763 | ||
764 | out: | |
765 | return ret; | |
766 | } | |
43cb76d9 | 767 | static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets); |
b76cdba9 MW |
768 | |
769 | /* | |
770 | * Show and set the up and down delays. These must be multiples of the | |
771 | * MII monitoring value, and are stored internally as the multiplier. | |
772 | * Thus, we must translate to MS for the real world. | |
773 | */ | |
43cb76d9 GKH |
774 | static ssize_t bonding_show_downdelay(struct device *d, |
775 | struct device_attribute *attr, | |
776 | char *buf) | |
b76cdba9 | 777 | { |
43cb76d9 | 778 | struct bonding *bond = to_bond(d); |
b76cdba9 | 779 | |
7bd46508 | 780 | return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon); |
b76cdba9 MW |
781 | } |
782 | ||
43cb76d9 GKH |
783 | static ssize_t bonding_store_downdelay(struct device *d, |
784 | struct device_attribute *attr, | |
785 | const char *buf, size_t count) | |
b76cdba9 MW |
786 | { |
787 | int new_value, ret = count; | |
43cb76d9 | 788 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
789 | |
790 | if (!(bond->params.miimon)) { | |
791 | printk(KERN_ERR DRV_NAME | |
792 | ": %s: Unable to set down delay as MII monitoring is disabled\n", | |
793 | bond->dev->name); | |
794 | ret = -EPERM; | |
795 | goto out; | |
796 | } | |
797 | ||
798 | if (sscanf(buf, "%d", &new_value) != 1) { | |
799 | printk(KERN_ERR DRV_NAME | |
800 | ": %s: no down delay value specified.\n", | |
801 | bond->dev->name); | |
802 | ret = -EINVAL; | |
803 | goto out; | |
804 | } | |
805 | if (new_value < 0) { | |
806 | printk(KERN_ERR DRV_NAME | |
807 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
808 | bond->dev->name, new_value, 1, INT_MAX); | |
809 | ret = -EINVAL; | |
810 | goto out; | |
811 | } else { | |
812 | if ((new_value % bond->params.miimon) != 0) { | |
813 | printk(KERN_WARNING DRV_NAME | |
814 | ": %s: Warning: down delay (%d) is not a multiple " | |
815 | "of miimon (%d), delay rounded to %d ms\n", | |
816 | bond->dev->name, new_value, bond->params.miimon, | |
817 | (new_value / bond->params.miimon) * | |
818 | bond->params.miimon); | |
819 | } | |
820 | bond->params.downdelay = new_value / bond->params.miimon; | |
821 | printk(KERN_INFO DRV_NAME ": %s: Setting down delay to %d.\n", | |
822 | bond->dev->name, bond->params.downdelay * bond->params.miimon); | |
823 | ||
824 | } | |
825 | ||
826 | out: | |
827 | return ret; | |
828 | } | |
43cb76d9 | 829 | static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay); |
b76cdba9 | 830 | |
43cb76d9 GKH |
831 | static ssize_t bonding_show_updelay(struct device *d, |
832 | struct device_attribute *attr, | |
833 | char *buf) | |
b76cdba9 | 834 | { |
43cb76d9 | 835 | struct bonding *bond = to_bond(d); |
b76cdba9 | 836 | |
7bd46508 | 837 | return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon); |
b76cdba9 MW |
838 | |
839 | } | |
840 | ||
43cb76d9 GKH |
841 | static ssize_t bonding_store_updelay(struct device *d, |
842 | struct device_attribute *attr, | |
843 | const char *buf, size_t count) | |
b76cdba9 MW |
844 | { |
845 | int new_value, ret = count; | |
43cb76d9 | 846 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
847 | |
848 | if (!(bond->params.miimon)) { | |
849 | printk(KERN_ERR DRV_NAME | |
850 | ": %s: Unable to set up delay as MII monitoring is disabled\n", | |
851 | bond->dev->name); | |
852 | ret = -EPERM; | |
853 | goto out; | |
854 | } | |
855 | ||
856 | if (sscanf(buf, "%d", &new_value) != 1) { | |
857 | printk(KERN_ERR DRV_NAME | |
858 | ": %s: no up delay value specified.\n", | |
859 | bond->dev->name); | |
860 | ret = -EINVAL; | |
861 | goto out; | |
862 | } | |
863 | if (new_value < 0) { | |
864 | printk(KERN_ERR DRV_NAME | |
865 | ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", | |
866 | bond->dev->name, new_value, 1, INT_MAX); | |
867 | ret = -EINVAL; | |
868 | goto out; | |
869 | } else { | |
870 | if ((new_value % bond->params.miimon) != 0) { | |
871 | printk(KERN_WARNING DRV_NAME | |
872 | ": %s: Warning: up delay (%d) is not a multiple " | |
873 | "of miimon (%d), updelay rounded to %d ms\n", | |
874 | bond->dev->name, new_value, bond->params.miimon, | |
875 | (new_value / bond->params.miimon) * | |
876 | bond->params.miimon); | |
877 | } | |
878 | bond->params.updelay = new_value / bond->params.miimon; | |
879 | printk(KERN_INFO DRV_NAME ": %s: Setting up delay to %d.\n", | |
880 | bond->dev->name, bond->params.updelay * bond->params.miimon); | |
881 | ||
882 | } | |
883 | ||
884 | out: | |
885 | return ret; | |
886 | } | |
43cb76d9 | 887 | static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR , bonding_show_updelay, bonding_store_updelay); |
b76cdba9 MW |
888 | |
889 | /* | |
890 | * Show and set the LACP interval. Interface must be down, and the mode | |
891 | * must be set to 802.3ad mode. | |
892 | */ | |
43cb76d9 GKH |
893 | static ssize_t bonding_show_lacp(struct device *d, |
894 | struct device_attribute *attr, | |
895 | char *buf) | |
b76cdba9 | 896 | { |
43cb76d9 | 897 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
898 | |
899 | return sprintf(buf, "%s %d\n", | |
900 | bond_lacp_tbl[bond->params.lacp_fast].modename, | |
7bd46508 | 901 | bond->params.lacp_fast); |
b76cdba9 MW |
902 | } |
903 | ||
43cb76d9 GKH |
904 | static ssize_t bonding_store_lacp(struct device *d, |
905 | struct device_attribute *attr, | |
906 | const char *buf, size_t count) | |
b76cdba9 MW |
907 | { |
908 | int new_value, ret = count; | |
43cb76d9 | 909 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
910 | |
911 | if (bond->dev->flags & IFF_UP) { | |
912 | printk(KERN_ERR DRV_NAME | |
913 | ": %s: Unable to update LACP rate because interface is up.\n", | |
914 | bond->dev->name); | |
915 | ret = -EPERM; | |
916 | goto out; | |
917 | } | |
918 | ||
919 | if (bond->params.mode != BOND_MODE_8023AD) { | |
920 | printk(KERN_ERR DRV_NAME | |
921 | ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n", | |
922 | bond->dev->name); | |
923 | ret = -EPERM; | |
924 | goto out; | |
925 | } | |
926 | ||
ece95f7f | 927 | new_value = bond_parse_parm(buf, bond_lacp_tbl); |
b76cdba9 MW |
928 | |
929 | if ((new_value == 1) || (new_value == 0)) { | |
930 | bond->params.lacp_fast = new_value; | |
931 | printk(KERN_INFO DRV_NAME | |
932 | ": %s: Setting LACP rate to %s (%d).\n", | |
933 | bond->dev->name, bond_lacp_tbl[new_value].modename, new_value); | |
934 | } else { | |
935 | printk(KERN_ERR DRV_NAME | |
936 | ": %s: Ignoring invalid LACP rate value %.*s.\n", | |
937 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
938 | ret = -EINVAL; | |
939 | } | |
940 | out: | |
941 | return ret; | |
942 | } | |
43cb76d9 | 943 | static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp); |
b76cdba9 | 944 | |
7893b249 MS |
945 | /* |
946 | * Show and set the number of grat ARP to send after a failover event. | |
947 | */ | |
948 | static ssize_t bonding_show_n_grat_arp(struct device *d, | |
949 | struct device_attribute *attr, | |
950 | char *buf) | |
951 | { | |
952 | struct bonding *bond = to_bond(d); | |
953 | ||
954 | return sprintf(buf, "%d\n", bond->params.num_grat_arp); | |
955 | } | |
956 | ||
957 | static ssize_t bonding_store_n_grat_arp(struct device *d, | |
958 | struct device_attribute *attr, | |
959 | const char *buf, size_t count) | |
960 | { | |
961 | int new_value, ret = count; | |
962 | struct bonding *bond = to_bond(d); | |
963 | ||
964 | if (sscanf(buf, "%d", &new_value) != 1) { | |
965 | printk(KERN_ERR DRV_NAME | |
966 | ": %s: no num_grat_arp value specified.\n", | |
967 | bond->dev->name); | |
968 | ret = -EINVAL; | |
969 | goto out; | |
970 | } | |
971 | if (new_value < 0 || new_value > 255) { | |
972 | printk(KERN_ERR DRV_NAME | |
973 | ": %s: Invalid num_grat_arp value %d not in range 0-255; rejected.\n", | |
974 | bond->dev->name, new_value); | |
975 | ret = -EINVAL; | |
976 | goto out; | |
977 | } else { | |
978 | bond->params.num_grat_arp = new_value; | |
979 | } | |
980 | out: | |
981 | return ret; | |
982 | } | |
983 | static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR, bonding_show_n_grat_arp, bonding_store_n_grat_arp); | |
b76cdba9 MW |
984 | /* |
985 | * Show and set the MII monitor interval. There are two tricky bits | |
986 | * here. First, if MII monitoring is activated, then we must disable | |
987 | * ARP monitoring. Second, if the timer isn't running, we must | |
988 | * start it. | |
989 | */ | |
43cb76d9 GKH |
990 | static ssize_t bonding_show_miimon(struct device *d, |
991 | struct device_attribute *attr, | |
992 | char *buf) | |
b76cdba9 | 993 | { |
43cb76d9 | 994 | struct bonding *bond = to_bond(d); |
b76cdba9 | 995 | |
7bd46508 | 996 | return sprintf(buf, "%d\n", bond->params.miimon); |
b76cdba9 MW |
997 | } |
998 | ||
43cb76d9 GKH |
999 | static ssize_t bonding_store_miimon(struct device *d, |
1000 | struct device_attribute *attr, | |
1001 | const char *buf, size_t count) | |
b76cdba9 MW |
1002 | { |
1003 | int new_value, ret = count; | |
43cb76d9 | 1004 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1005 | |
1006 | if (sscanf(buf, "%d", &new_value) != 1) { | |
1007 | printk(KERN_ERR DRV_NAME | |
1008 | ": %s: no miimon value specified.\n", | |
1009 | bond->dev->name); | |
1010 | ret = -EINVAL; | |
1011 | goto out; | |
1012 | } | |
1013 | if (new_value < 0) { | |
1014 | printk(KERN_ERR DRV_NAME | |
1015 | ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n", | |
1016 | bond->dev->name, new_value, 1, INT_MAX); | |
1017 | ret = -EINVAL; | |
1018 | goto out; | |
1019 | } else { | |
1020 | printk(KERN_INFO DRV_NAME | |
1021 | ": %s: Setting MII monitoring interval to %d.\n", | |
1022 | bond->dev->name, new_value); | |
1023 | bond->params.miimon = new_value; | |
1024 | if(bond->params.updelay) | |
1025 | printk(KERN_INFO DRV_NAME | |
1026 | ": %s: Note: Updating updelay (to %d) " | |
1027 | "since it is a multiple of the miimon value.\n", | |
1028 | bond->dev->name, | |
1029 | bond->params.updelay * bond->params.miimon); | |
1030 | if(bond->params.downdelay) | |
1031 | printk(KERN_INFO DRV_NAME | |
1032 | ": %s: Note: Updating downdelay (to %d) " | |
1033 | "since it is a multiple of the miimon value.\n", | |
1034 | bond->dev->name, | |
1035 | bond->params.downdelay * bond->params.miimon); | |
1036 | if (bond->params.arp_interval) { | |
1037 | printk(KERN_INFO DRV_NAME | |
1038 | ": %s: MII monitoring cannot be used with " | |
1039 | "ARP monitoring. Disabling ARP monitoring...\n", | |
1040 | bond->dev->name); | |
1041 | bond->params.arp_interval = 0; | |
f5b2b966 JV |
1042 | if (bond->params.arp_validate) { |
1043 | bond_unregister_arp(bond); | |
1044 | bond->params.arp_validate = | |
1045 | BOND_ARP_VALIDATE_NONE; | |
1046 | } | |
1b76b316 JV |
1047 | if (delayed_work_pending(&bond->arp_work)) { |
1048 | cancel_delayed_work(&bond->arp_work); | |
1049 | flush_workqueue(bond->wq); | |
b76cdba9 MW |
1050 | } |
1051 | } | |
1052 | ||
1053 | if (bond->dev->flags & IFF_UP) { | |
1054 | /* If the interface is up, we may need to fire off | |
1055 | * the MII timer. If the interface is down, the | |
1056 | * timer will get fired off when the open function | |
1057 | * is called. | |
1058 | */ | |
1b76b316 JV |
1059 | if (!delayed_work_pending(&bond->mii_work)) { |
1060 | INIT_DELAYED_WORK(&bond->mii_work, | |
1061 | bond_mii_monitor); | |
1062 | queue_delayed_work(bond->wq, | |
1063 | &bond->mii_work, 0); | |
b76cdba9 MW |
1064 | } |
1065 | } | |
1066 | } | |
1067 | out: | |
1068 | return ret; | |
1069 | } | |
43cb76d9 | 1070 | static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR, bonding_show_miimon, bonding_store_miimon); |
b76cdba9 MW |
1071 | |
1072 | /* | |
1073 | * Show and set the primary slave. The store function is much | |
1074 | * simpler than bonding_store_slaves function because it only needs to | |
1075 | * handle one interface name. | |
1076 | * The bond must be a mode that supports a primary for this be | |
1077 | * set. | |
1078 | */ | |
43cb76d9 GKH |
1079 | static ssize_t bonding_show_primary(struct device *d, |
1080 | struct device_attribute *attr, | |
1081 | char *buf) | |
b76cdba9 MW |
1082 | { |
1083 | int count = 0; | |
43cb76d9 | 1084 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1085 | |
1086 | if (bond->primary_slave) | |
7bd46508 | 1087 | count = sprintf(buf, "%s\n", bond->primary_slave->dev->name); |
b76cdba9 MW |
1088 | |
1089 | return count; | |
1090 | } | |
1091 | ||
43cb76d9 GKH |
1092 | static ssize_t bonding_store_primary(struct device *d, |
1093 | struct device_attribute *attr, | |
1094 | const char *buf, size_t count) | |
b76cdba9 MW |
1095 | { |
1096 | int i; | |
1097 | struct slave *slave; | |
43cb76d9 | 1098 | struct bonding *bond = to_bond(d); |
b76cdba9 | 1099 | |
e934dd78 JV |
1100 | rtnl_lock(); |
1101 | read_lock(&bond->lock); | |
1102 | write_lock_bh(&bond->curr_slave_lock); | |
1103 | ||
b76cdba9 MW |
1104 | if (!USES_PRIMARY(bond->params.mode)) { |
1105 | printk(KERN_INFO DRV_NAME | |
1106 | ": %s: Unable to set primary slave; %s is in mode %d\n", | |
1107 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1108 | } else { | |
1109 | bond_for_each_slave(bond, slave, i) { | |
1110 | if (strnicmp | |
1111 | (slave->dev->name, buf, | |
1112 | strlen(slave->dev->name)) == 0) { | |
1113 | printk(KERN_INFO DRV_NAME | |
1114 | ": %s: Setting %s as primary slave.\n", | |
1115 | bond->dev->name, slave->dev->name); | |
1116 | bond->primary_slave = slave; | |
1117 | bond_select_active_slave(bond); | |
1118 | goto out; | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | /* if we got here, then we didn't match the name of any slave */ | |
1123 | ||
1124 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1125 | printk(KERN_INFO DRV_NAME | |
1126 | ": %s: Setting primary slave to None.\n", | |
1127 | bond->dev->name); | |
3418db7c | 1128 | bond->primary_slave = NULL; |
b76cdba9 MW |
1129 | bond_select_active_slave(bond); |
1130 | } else { | |
1131 | printk(KERN_INFO DRV_NAME | |
1132 | ": %s: Unable to set %.*s as primary slave as it is not a slave.\n", | |
1133 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1134 | } | |
1135 | } | |
1136 | out: | |
e934dd78 JV |
1137 | write_unlock_bh(&bond->curr_slave_lock); |
1138 | read_unlock(&bond->lock); | |
6603a6f2 JV |
1139 | rtnl_unlock(); |
1140 | ||
b76cdba9 MW |
1141 | return count; |
1142 | } | |
43cb76d9 | 1143 | static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, bonding_show_primary, bonding_store_primary); |
b76cdba9 MW |
1144 | |
1145 | /* | |
1146 | * Show and set the use_carrier flag. | |
1147 | */ | |
43cb76d9 GKH |
1148 | static ssize_t bonding_show_carrier(struct device *d, |
1149 | struct device_attribute *attr, | |
1150 | char *buf) | |
b76cdba9 | 1151 | { |
43cb76d9 | 1152 | struct bonding *bond = to_bond(d); |
b76cdba9 | 1153 | |
7bd46508 | 1154 | return sprintf(buf, "%d\n", bond->params.use_carrier); |
b76cdba9 MW |
1155 | } |
1156 | ||
43cb76d9 GKH |
1157 | static ssize_t bonding_store_carrier(struct device *d, |
1158 | struct device_attribute *attr, | |
1159 | const char *buf, size_t count) | |
b76cdba9 MW |
1160 | { |
1161 | int new_value, ret = count; | |
43cb76d9 | 1162 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1163 | |
1164 | ||
1165 | if (sscanf(buf, "%d", &new_value) != 1) { | |
1166 | printk(KERN_ERR DRV_NAME | |
1167 | ": %s: no use_carrier value specified.\n", | |
1168 | bond->dev->name); | |
1169 | ret = -EINVAL; | |
1170 | goto out; | |
1171 | } | |
1172 | if ((new_value == 0) || (new_value == 1)) { | |
1173 | bond->params.use_carrier = new_value; | |
1174 | printk(KERN_INFO DRV_NAME ": %s: Setting use_carrier to %d.\n", | |
1175 | bond->dev->name, new_value); | |
1176 | } else { | |
1177 | printk(KERN_INFO DRV_NAME | |
1178 | ": %s: Ignoring invalid use_carrier value %d.\n", | |
1179 | bond->dev->name, new_value); | |
1180 | } | |
1181 | out: | |
1182 | return count; | |
1183 | } | |
43cb76d9 | 1184 | static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, bonding_show_carrier, bonding_store_carrier); |
b76cdba9 MW |
1185 | |
1186 | ||
1187 | /* | |
1188 | * Show and set currently active_slave. | |
1189 | */ | |
43cb76d9 GKH |
1190 | static ssize_t bonding_show_active_slave(struct device *d, |
1191 | struct device_attribute *attr, | |
1192 | char *buf) | |
b76cdba9 MW |
1193 | { |
1194 | struct slave *curr; | |
43cb76d9 | 1195 | struct bonding *bond = to_bond(d); |
16cd0160 | 1196 | int count = 0; |
b76cdba9 | 1197 | |
b76cdba9 MW |
1198 | read_lock(&bond->curr_slave_lock); |
1199 | curr = bond->curr_active_slave; | |
1200 | read_unlock(&bond->curr_slave_lock); | |
1201 | ||
1202 | if (USES_PRIMARY(bond->params.mode) && curr) | |
7bd46508 | 1203 | count = sprintf(buf, "%s\n", curr->dev->name); |
b76cdba9 MW |
1204 | return count; |
1205 | } | |
1206 | ||
43cb76d9 GKH |
1207 | static ssize_t bonding_store_active_slave(struct device *d, |
1208 | struct device_attribute *attr, | |
1209 | const char *buf, size_t count) | |
b76cdba9 MW |
1210 | { |
1211 | int i; | |
1212 | struct slave *slave; | |
1213 | struct slave *old_active = NULL; | |
1214 | struct slave *new_active = NULL; | |
43cb76d9 | 1215 | struct bonding *bond = to_bond(d); |
b76cdba9 | 1216 | |
1466a219 | 1217 | rtnl_lock(); |
e934dd78 JV |
1218 | read_lock(&bond->lock); |
1219 | write_lock_bh(&bond->curr_slave_lock); | |
1466a219 | 1220 | |
b76cdba9 MW |
1221 | if (!USES_PRIMARY(bond->params.mode)) { |
1222 | printk(KERN_INFO DRV_NAME | |
1223 | ": %s: Unable to change active slave; %s is in mode %d\n", | |
1224 | bond->dev->name, bond->dev->name, bond->params.mode); | |
1225 | } else { | |
1226 | bond_for_each_slave(bond, slave, i) { | |
1227 | if (strnicmp | |
1228 | (slave->dev->name, buf, | |
1229 | strlen(slave->dev->name)) == 0) { | |
1230 | old_active = bond->curr_active_slave; | |
1231 | new_active = slave; | |
a50d8de2 | 1232 | if (new_active == old_active) { |
b76cdba9 MW |
1233 | /* do nothing */ |
1234 | printk(KERN_INFO DRV_NAME | |
1235 | ": %s: %s is already the current active slave.\n", | |
1236 | bond->dev->name, slave->dev->name); | |
1237 | goto out; | |
1238 | } | |
1239 | else { | |
1240 | if ((new_active) && | |
1241 | (old_active) && | |
1242 | (new_active->link == BOND_LINK_UP) && | |
1243 | IS_UP(new_active->dev)) { | |
1244 | printk(KERN_INFO DRV_NAME | |
1245 | ": %s: Setting %s as active slave.\n", | |
1246 | bond->dev->name, slave->dev->name); | |
1247 | bond_change_active_slave(bond, new_active); | |
1248 | } | |
1249 | else { | |
1250 | printk(KERN_INFO DRV_NAME | |
1251 | ": %s: Could not set %s as active slave; " | |
1252 | "either %s is down or the link is down.\n", | |
1253 | bond->dev->name, slave->dev->name, | |
1254 | slave->dev->name); | |
1255 | } | |
1256 | goto out; | |
1257 | } | |
1258 | } | |
1259 | } | |
1260 | ||
1261 | /* if we got here, then we didn't match the name of any slave */ | |
1262 | ||
1263 | if (strlen(buf) == 0 || buf[0] == '\n') { | |
1264 | printk(KERN_INFO DRV_NAME | |
1265 | ": %s: Setting active slave to None.\n", | |
1266 | bond->dev->name); | |
3418db7c | 1267 | bond->primary_slave = NULL; |
b76cdba9 MW |
1268 | bond_select_active_slave(bond); |
1269 | } else { | |
1270 | printk(KERN_INFO DRV_NAME | |
1271 | ": %s: Unable to set %.*s as active slave as it is not a slave.\n", | |
1272 | bond->dev->name, (int)strlen(buf) - 1, buf); | |
1273 | } | |
1274 | } | |
1275 | out: | |
e934dd78 JV |
1276 | write_unlock_bh(&bond->curr_slave_lock); |
1277 | read_unlock(&bond->lock); | |
6603a6f2 JV |
1278 | rtnl_unlock(); |
1279 | ||
b76cdba9 MW |
1280 | return count; |
1281 | ||
1282 | } | |
43cb76d9 | 1283 | static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, bonding_show_active_slave, bonding_store_active_slave); |
b76cdba9 MW |
1284 | |
1285 | ||
1286 | /* | |
1287 | * Show link status of the bond interface. | |
1288 | */ | |
43cb76d9 GKH |
1289 | static ssize_t bonding_show_mii_status(struct device *d, |
1290 | struct device_attribute *attr, | |
1291 | char *buf) | |
b76cdba9 MW |
1292 | { |
1293 | struct slave *curr; | |
43cb76d9 | 1294 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1295 | |
1296 | read_lock(&bond->curr_slave_lock); | |
1297 | curr = bond->curr_active_slave; | |
1298 | read_unlock(&bond->curr_slave_lock); | |
1299 | ||
7bd46508 | 1300 | return sprintf(buf, "%s\n", (curr) ? "up" : "down"); |
b76cdba9 | 1301 | } |
43cb76d9 | 1302 | static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL); |
b76cdba9 MW |
1303 | |
1304 | ||
1305 | /* | |
1306 | * Show current 802.3ad aggregator ID. | |
1307 | */ | |
43cb76d9 GKH |
1308 | static ssize_t bonding_show_ad_aggregator(struct device *d, |
1309 | struct device_attribute *attr, | |
1310 | char *buf) | |
b76cdba9 MW |
1311 | { |
1312 | int count = 0; | |
43cb76d9 | 1313 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1314 | |
1315 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1316 | struct ad_info ad_info; | |
7bd46508 | 1317 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id); |
b76cdba9 | 1318 | } |
b76cdba9 MW |
1319 | |
1320 | return count; | |
1321 | } | |
43cb76d9 | 1322 | static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL); |
b76cdba9 MW |
1323 | |
1324 | ||
1325 | /* | |
1326 | * Show number of active 802.3ad ports. | |
1327 | */ | |
43cb76d9 GKH |
1328 | static ssize_t bonding_show_ad_num_ports(struct device *d, |
1329 | struct device_attribute *attr, | |
1330 | char *buf) | |
b76cdba9 MW |
1331 | { |
1332 | int count = 0; | |
43cb76d9 | 1333 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1334 | |
1335 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1336 | struct ad_info ad_info; | |
7bd46508 | 1337 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports); |
b76cdba9 | 1338 | } |
b76cdba9 MW |
1339 | |
1340 | return count; | |
1341 | } | |
43cb76d9 | 1342 | static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL); |
b76cdba9 MW |
1343 | |
1344 | ||
1345 | /* | |
1346 | * Show current 802.3ad actor key. | |
1347 | */ | |
43cb76d9 GKH |
1348 | static ssize_t bonding_show_ad_actor_key(struct device *d, |
1349 | struct device_attribute *attr, | |
1350 | char *buf) | |
b76cdba9 MW |
1351 | { |
1352 | int count = 0; | |
43cb76d9 | 1353 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1354 | |
1355 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1356 | struct ad_info ad_info; | |
7bd46508 | 1357 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key); |
b76cdba9 | 1358 | } |
b76cdba9 MW |
1359 | |
1360 | return count; | |
1361 | } | |
43cb76d9 | 1362 | static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL); |
b76cdba9 MW |
1363 | |
1364 | ||
1365 | /* | |
1366 | * Show current 802.3ad partner key. | |
1367 | */ | |
43cb76d9 GKH |
1368 | static ssize_t bonding_show_ad_partner_key(struct device *d, |
1369 | struct device_attribute *attr, | |
1370 | char *buf) | |
b76cdba9 MW |
1371 | { |
1372 | int count = 0; | |
43cb76d9 | 1373 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1374 | |
1375 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1376 | struct ad_info ad_info; | |
7bd46508 | 1377 | count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key); |
b76cdba9 | 1378 | } |
b76cdba9 MW |
1379 | |
1380 | return count; | |
1381 | } | |
43cb76d9 | 1382 | static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL); |
b76cdba9 MW |
1383 | |
1384 | ||
1385 | /* | |
1386 | * Show current 802.3ad partner mac. | |
1387 | */ | |
43cb76d9 GKH |
1388 | static ssize_t bonding_show_ad_partner_mac(struct device *d, |
1389 | struct device_attribute *attr, | |
1390 | char *buf) | |
b76cdba9 MW |
1391 | { |
1392 | int count = 0; | |
43cb76d9 | 1393 | struct bonding *bond = to_bond(d); |
b76cdba9 MW |
1394 | |
1395 | if (bond->params.mode == BOND_MODE_8023AD) { | |
1396 | struct ad_info ad_info; | |
1397 | if (!bond_3ad_get_active_agg_info(bond, &ad_info)) { | |
e174961c | 1398 | count = sprintf(buf, "%pM\n", ad_info.partner_system); |
b76cdba9 MW |
1399 | } |
1400 | } | |
b76cdba9 MW |
1401 | |
1402 | return count; | |
1403 | } | |
43cb76d9 | 1404 | static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL); |
b76cdba9 MW |
1405 | |
1406 | ||
1407 | ||
1408 | static struct attribute *per_bond_attrs[] = { | |
43cb76d9 GKH |
1409 | &dev_attr_slaves.attr, |
1410 | &dev_attr_mode.attr, | |
dd957c57 | 1411 | &dev_attr_fail_over_mac.attr, |
43cb76d9 GKH |
1412 | &dev_attr_arp_validate.attr, |
1413 | &dev_attr_arp_interval.attr, | |
1414 | &dev_attr_arp_ip_target.attr, | |
1415 | &dev_attr_downdelay.attr, | |
1416 | &dev_attr_updelay.attr, | |
1417 | &dev_attr_lacp_rate.attr, | |
1418 | &dev_attr_xmit_hash_policy.attr, | |
7893b249 | 1419 | &dev_attr_num_grat_arp.attr, |
43cb76d9 GKH |
1420 | &dev_attr_miimon.attr, |
1421 | &dev_attr_primary.attr, | |
1422 | &dev_attr_use_carrier.attr, | |
1423 | &dev_attr_active_slave.attr, | |
1424 | &dev_attr_mii_status.attr, | |
1425 | &dev_attr_ad_aggregator.attr, | |
1426 | &dev_attr_ad_num_ports.attr, | |
1427 | &dev_attr_ad_actor_key.attr, | |
1428 | &dev_attr_ad_partner_key.attr, | |
1429 | &dev_attr_ad_partner_mac.attr, | |
b76cdba9 MW |
1430 | NULL, |
1431 | }; | |
1432 | ||
1433 | static struct attribute_group bonding_group = { | |
1434 | .name = "bonding", | |
1435 | .attrs = per_bond_attrs, | |
1436 | }; | |
1437 | ||
1438 | /* | |
1439 | * Initialize sysfs. This sets up the bonding_masters file in | |
1440 | * /sys/class/net. | |
1441 | */ | |
1442 | int bond_create_sysfs(void) | |
1443 | { | |
b8a9787e | 1444 | int ret; |
b76cdba9 | 1445 | |
b8a9787e | 1446 | ret = netdev_class_create_file(&class_attr_bonding_masters); |
877cbd36 JV |
1447 | /* |
1448 | * Permit multiple loads of the module by ignoring failures to | |
1449 | * create the bonding_masters sysfs file. Bonding devices | |
1450 | * created by second or subsequent loads of the module will | |
1451 | * not be listed in, or controllable by, bonding_masters, but | |
1452 | * will have the usual "bonding" sysfs directory. | |
1453 | * | |
1454 | * This is done to preserve backwards compatibility for | |
1455 | * initscripts/sysconfig, which load bonding multiple times to | |
1456 | * configure multiple bonding devices. | |
1457 | */ | |
1458 | if (ret == -EEXIST) { | |
38d2f38b SH |
1459 | /* Is someone being kinky and naming a device bonding_master? */ |
1460 | if (__dev_get_by_name(&init_net, | |
1461 | class_attr_bonding_masters.attr.name)) | |
1462 | printk(KERN_ERR | |
1463 | "network device named %s already exists in sysfs", | |
1464 | class_attr_bonding_masters.attr.name); | |
877cbd36 | 1465 | } |
b76cdba9 MW |
1466 | |
1467 | return ret; | |
1468 | ||
1469 | } | |
1470 | ||
1471 | /* | |
1472 | * Remove /sys/class/net/bonding_masters. | |
1473 | */ | |
1474 | void bond_destroy_sysfs(void) | |
1475 | { | |
b8a9787e | 1476 | netdev_class_remove_file(&class_attr_bonding_masters); |
b76cdba9 MW |
1477 | } |
1478 | ||
1479 | /* | |
1480 | * Initialize sysfs for each bond. This sets up and registers | |
1481 | * the 'bondctl' directory for each individual bond under /sys/class/net. | |
1482 | */ | |
1483 | int bond_create_sysfs_entry(struct bonding *bond) | |
1484 | { | |
1485 | struct net_device *dev = bond->dev; | |
1486 | int err; | |
1487 | ||
43cb76d9 | 1488 | err = sysfs_create_group(&(dev->dev.kobj), &bonding_group); |
b76cdba9 MW |
1489 | if (err) { |
1490 | printk(KERN_EMERG "eek! didn't create group!\n"); | |
1491 | } | |
1492 | ||
1493 | if (expected_refcount < 1) | |
43cb76d9 | 1494 | expected_refcount = atomic_read(&bond->dev->dev.kobj.kref.refcount); |
b76cdba9 MW |
1495 | |
1496 | return err; | |
1497 | } | |
1498 | /* | |
1499 | * Remove sysfs entries for each bond. | |
1500 | */ | |
1501 | void bond_destroy_sysfs_entry(struct bonding *bond) | |
1502 | { | |
1503 | struct net_device *dev = bond->dev; | |
1504 | ||
43cb76d9 | 1505 | sysfs_remove_group(&(dev->dev.kobj), &bonding_group); |
b76cdba9 MW |
1506 | } |
1507 |