1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Copyright(c) 2004-2005 Intel Corporation. All rights reserved. |
4 | */ |
5 | |
6 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
7 | |
8 | #include <linux/kernel.h> |
9 | #include <linux/module.h> |
10 | #include <linux/device.h> |
11 | #include <linux/sched/signal.h> |
12 | #include <linux/fs.h> |
13 | #include <linux/types.h> |
14 | #include <linux/string.h> |
15 | #include <linux/netdevice.h> |
16 | #include <linux/inetdevice.h> |
17 | #include <linux/in.h> |
18 | #include <linux/sysfs.h> |
19 | #include <linux/ctype.h> |
20 | #include <linux/inet.h> |
21 | #include <linux/rtnetlink.h> |
22 | #include <linux/etherdevice.h> |
23 | #include <net/net_namespace.h> |
24 | #include <net/netns/generic.h> |
25 | #include <linux/nsproxy.h> |
26 | |
27 | #include <net/bonding.h> |
28 | |
29 | #define to_bond(cd) ((struct bonding *)(netdev_priv(to_net_dev(cd)))) |
30 | |
31 | /* "show" function for the bond_masters attribute. |
32 | * The class parameter is ignored. |
33 | */ |
34 | static ssize_t bonding_show_bonds(const struct class *cls, |
35 | const struct class_attribute *attr, |
36 | char *buf) |
37 | { |
38 | const struct bond_net *bn = |
39 | container_of_const(attr, struct bond_net, class_attr_bonding_masters); |
40 | int res = 0; |
41 | struct bonding *bond; |
42 | |
43 | rtnl_lock(); |
44 | |
45 | list_for_each_entry(bond, &bn->dev_list, bond_list) { |
46 | if (res > (PAGE_SIZE - IFNAMSIZ)) { |
47 | /* not enough space for another interface name */ |
48 | if ((PAGE_SIZE - res) > 10) |
49 | res = PAGE_SIZE - 10; |
50 | res += sysfs_emit_at(buf, at: res, fmt: "++more++ " ); |
51 | break; |
52 | } |
53 | res += sysfs_emit_at(buf, at: res, fmt: "%s " , bond->dev->name); |
54 | } |
55 | if (res) |
56 | buf[res-1] = '\n'; /* eat the leftover space */ |
57 | |
58 | rtnl_unlock(); |
59 | return res; |
60 | } |
61 | |
62 | static struct net_device *bond_get_by_name(const struct bond_net *bn, const char *ifname) |
63 | { |
64 | struct bonding *bond; |
65 | |
66 | list_for_each_entry(bond, &bn->dev_list, bond_list) { |
67 | if (strncmp(bond->dev->name, ifname, IFNAMSIZ) == 0) |
68 | return bond->dev; |
69 | } |
70 | return NULL; |
71 | } |
72 | |
73 | /* "store" function for the bond_masters attribute. This is what |
74 | * creates and deletes entire bonds. |
75 | * |
76 | * The class parameter is ignored. |
77 | */ |
78 | static ssize_t bonding_store_bonds(const struct class *cls, |
79 | const struct class_attribute *attr, |
80 | const char *buffer, size_t count) |
81 | { |
82 | const struct bond_net *bn = |
83 | container_of_const(attr, struct bond_net, class_attr_bonding_masters); |
84 | char command[IFNAMSIZ + 1] = {0, }; |
85 | char *ifname; |
86 | int rv, res = count; |
87 | |
88 | sscanf(buffer, "%16s" , command); /* IFNAMSIZ*/ |
89 | ifname = command + 1; |
90 | if ((strlen(command) <= 1) || |
91 | !dev_valid_name(name: ifname)) |
92 | goto err_no_cmd; |
93 | |
94 | if (command[0] == '+') { |
95 | pr_info("%s is being created...\n" , ifname); |
96 | rv = bond_create(net: bn->net, name: ifname); |
97 | if (rv) { |
98 | if (rv == -EEXIST) |
99 | pr_info("%s already exists\n" , ifname); |
100 | else |
101 | pr_info("%s creation failed\n" , ifname); |
102 | res = rv; |
103 | } |
104 | } else if (command[0] == '-') { |
105 | struct net_device *bond_dev; |
106 | |
107 | rtnl_lock(); |
108 | bond_dev = bond_get_by_name(bn, ifname); |
109 | if (bond_dev) { |
110 | pr_info("%s is being deleted...\n" , ifname); |
111 | unregister_netdevice(dev: bond_dev); |
112 | } else { |
113 | pr_err("unable to delete non-existent %s\n" , ifname); |
114 | res = -ENODEV; |
115 | } |
116 | rtnl_unlock(); |
117 | } else |
118 | goto err_no_cmd; |
119 | |
120 | /* Always return either count or an error. If you return 0, you'll |
121 | * get called forever, which is bad. |
122 | */ |
123 | return res; |
124 | |
125 | err_no_cmd: |
126 | pr_err("no command found in bonding_masters - use +ifname or -ifname\n" ); |
127 | return -EPERM; |
128 | } |
129 | |
130 | /* class attribute for bond_masters file. This ends up in /sys/class/net */ |
131 | static const struct class_attribute class_attr_bonding_masters = { |
132 | .attr = { |
133 | .name = "bonding_masters" , |
134 | .mode = 0644, |
135 | }, |
136 | .show = bonding_show_bonds, |
137 | .store = bonding_store_bonds, |
138 | }; |
139 | |
140 | /* Generic "store" method for bonding sysfs option setting */ |
141 | static ssize_t bonding_sysfs_store_option(struct device *d, |
142 | struct device_attribute *attr, |
143 | const char *buffer, size_t count) |
144 | { |
145 | struct bonding *bond = to_bond(d); |
146 | const struct bond_option *opt; |
147 | char *buffer_clone; |
148 | int ret; |
149 | |
150 | opt = bond_opt_get_by_name(name: attr->attr.name); |
151 | if (WARN_ON(!opt)) |
152 | return -ENOENT; |
153 | buffer_clone = kstrndup(s: buffer, len: count, GFP_KERNEL); |
154 | if (!buffer_clone) |
155 | return -ENOMEM; |
156 | ret = bond_opt_tryset_rtnl(bond, option: opt->id, buf: buffer_clone); |
157 | if (!ret) |
158 | ret = count; |
159 | kfree(objp: buffer_clone); |
160 | |
161 | return ret; |
162 | } |
163 | |
164 | /* Show the slaves in the current bond. */ |
165 | static ssize_t bonding_show_slaves(struct device *d, |
166 | struct device_attribute *attr, char *buf) |
167 | { |
168 | struct bonding *bond = to_bond(d); |
169 | struct list_head *iter; |
170 | struct slave *slave; |
171 | int res = 0; |
172 | |
173 | if (!rtnl_trylock()) |
174 | return restart_syscall(); |
175 | |
176 | bond_for_each_slave(bond, slave, iter) { |
177 | if (res > (PAGE_SIZE - IFNAMSIZ)) { |
178 | /* not enough space for another interface name */ |
179 | if ((PAGE_SIZE - res) > 10) |
180 | res = PAGE_SIZE - 10; |
181 | res += sysfs_emit_at(buf, at: res, fmt: "++more++ " ); |
182 | break; |
183 | } |
184 | res += sysfs_emit_at(buf, at: res, fmt: "%s " , slave->dev->name); |
185 | } |
186 | |
187 | rtnl_unlock(); |
188 | |
189 | if (res) |
190 | buf[res-1] = '\n'; /* eat the leftover space */ |
191 | |
192 | return res; |
193 | } |
194 | static DEVICE_ATTR(slaves, 0644, bonding_show_slaves, |
195 | bonding_sysfs_store_option); |
196 | |
197 | /* Show the bonding mode. */ |
198 | static ssize_t bonding_show_mode(struct device *d, |
199 | struct device_attribute *attr, char *buf) |
200 | { |
201 | struct bonding *bond = to_bond(d); |
202 | const struct bond_opt_value *val; |
203 | |
204 | val = bond_opt_get_val(option: BOND_OPT_MODE, BOND_MODE(bond)); |
205 | |
206 | return sysfs_emit(buf, fmt: "%s %d\n" , val->string, BOND_MODE(bond)); |
207 | } |
208 | static DEVICE_ATTR(mode, 0644, bonding_show_mode, bonding_sysfs_store_option); |
209 | |
210 | /* Show the bonding transmit hash method. */ |
211 | static ssize_t bonding_show_xmit_hash(struct device *d, |
212 | struct device_attribute *attr, |
213 | char *buf) |
214 | { |
215 | struct bonding *bond = to_bond(d); |
216 | const struct bond_opt_value *val; |
217 | |
218 | val = bond_opt_get_val(option: BOND_OPT_XMIT_HASH, val: bond->params.xmit_policy); |
219 | |
220 | return sysfs_emit(buf, fmt: "%s %d\n" , val->string, bond->params.xmit_policy); |
221 | } |
222 | static DEVICE_ATTR(xmit_hash_policy, 0644, |
223 | bonding_show_xmit_hash, bonding_sysfs_store_option); |
224 | |
225 | /* Show arp_validate. */ |
226 | static ssize_t bonding_show_arp_validate(struct device *d, |
227 | struct device_attribute *attr, |
228 | char *buf) |
229 | { |
230 | struct bonding *bond = to_bond(d); |
231 | const struct bond_opt_value *val; |
232 | |
233 | val = bond_opt_get_val(option: BOND_OPT_ARP_VALIDATE, |
234 | val: bond->params.arp_validate); |
235 | |
236 | return sysfs_emit(buf, fmt: "%s %d\n" , val->string, bond->params.arp_validate); |
237 | } |
238 | static DEVICE_ATTR(arp_validate, 0644, bonding_show_arp_validate, |
239 | bonding_sysfs_store_option); |
240 | |
241 | /* Show arp_all_targets. */ |
242 | static ssize_t bonding_show_arp_all_targets(struct device *d, |
243 | struct device_attribute *attr, |
244 | char *buf) |
245 | { |
246 | struct bonding *bond = to_bond(d); |
247 | const struct bond_opt_value *val; |
248 | |
249 | val = bond_opt_get_val(option: BOND_OPT_ARP_ALL_TARGETS, |
250 | val: bond->params.arp_all_targets); |
251 | return sysfs_emit(buf, fmt: "%s %d\n" , |
252 | val->string, bond->params.arp_all_targets); |
253 | } |
254 | static DEVICE_ATTR(arp_all_targets, 0644, |
255 | bonding_show_arp_all_targets, bonding_sysfs_store_option); |
256 | |
257 | /* Show fail_over_mac. */ |
258 | static ssize_t bonding_show_fail_over_mac(struct device *d, |
259 | struct device_attribute *attr, |
260 | char *buf) |
261 | { |
262 | struct bonding *bond = to_bond(d); |
263 | const struct bond_opt_value *val; |
264 | |
265 | val = bond_opt_get_val(option: BOND_OPT_FAIL_OVER_MAC, |
266 | val: bond->params.fail_over_mac); |
267 | |
268 | return sysfs_emit(buf, fmt: "%s %d\n" , val->string, bond->params.fail_over_mac); |
269 | } |
270 | static DEVICE_ATTR(fail_over_mac, 0644, |
271 | bonding_show_fail_over_mac, bonding_sysfs_store_option); |
272 | |
273 | /* Show the arp timer interval. */ |
274 | static ssize_t bonding_show_arp_interval(struct device *d, |
275 | struct device_attribute *attr, |
276 | char *buf) |
277 | { |
278 | struct bonding *bond = to_bond(d); |
279 | |
280 | return sysfs_emit(buf, fmt: "%d\n" , bond->params.arp_interval); |
281 | } |
282 | static DEVICE_ATTR(arp_interval, 0644, |
283 | bonding_show_arp_interval, bonding_sysfs_store_option); |
284 | |
285 | /* Show the arp targets. */ |
286 | static ssize_t bonding_show_arp_targets(struct device *d, |
287 | struct device_attribute *attr, |
288 | char *buf) |
289 | { |
290 | struct bonding *bond = to_bond(d); |
291 | int i, res = 0; |
292 | |
293 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { |
294 | if (bond->params.arp_targets[i]) |
295 | res += sysfs_emit_at(buf, at: res, fmt: "%pI4 " , |
296 | &bond->params.arp_targets[i]); |
297 | } |
298 | if (res) |
299 | buf[res-1] = '\n'; /* eat the leftover space */ |
300 | |
301 | return res; |
302 | } |
303 | static DEVICE_ATTR(arp_ip_target, 0644, |
304 | bonding_show_arp_targets, bonding_sysfs_store_option); |
305 | |
306 | /* Show the arp missed max. */ |
307 | static ssize_t bonding_show_missed_max(struct device *d, |
308 | struct device_attribute *attr, |
309 | char *buf) |
310 | { |
311 | struct bonding *bond = to_bond(d); |
312 | |
313 | return sysfs_emit(buf, fmt: "%u\n" , bond->params.missed_max); |
314 | } |
315 | static DEVICE_ATTR(arp_missed_max, 0644, |
316 | bonding_show_missed_max, bonding_sysfs_store_option); |
317 | |
318 | /* Show the up and down delays. */ |
319 | static ssize_t bonding_show_downdelay(struct device *d, |
320 | struct device_attribute *attr, |
321 | char *buf) |
322 | { |
323 | struct bonding *bond = to_bond(d); |
324 | |
325 | return sysfs_emit(buf, fmt: "%d\n" , bond->params.downdelay * bond->params.miimon); |
326 | } |
327 | static DEVICE_ATTR(downdelay, 0644, |
328 | bonding_show_downdelay, bonding_sysfs_store_option); |
329 | |
330 | static ssize_t bonding_show_updelay(struct device *d, |
331 | struct device_attribute *attr, |
332 | char *buf) |
333 | { |
334 | struct bonding *bond = to_bond(d); |
335 | |
336 | return sysfs_emit(buf, fmt: "%d\n" , bond->params.updelay * bond->params.miimon); |
337 | |
338 | } |
339 | static DEVICE_ATTR(updelay, 0644, |
340 | bonding_show_updelay, bonding_sysfs_store_option); |
341 | |
342 | static ssize_t bonding_show_peer_notif_delay(struct device *d, |
343 | struct device_attribute *attr, |
344 | char *buf) |
345 | { |
346 | struct bonding *bond = to_bond(d); |
347 | |
348 | return sysfs_emit(buf, fmt: "%d\n" , |
349 | bond->params.peer_notif_delay * bond->params.miimon); |
350 | } |
351 | static DEVICE_ATTR(peer_notif_delay, 0644, |
352 | bonding_show_peer_notif_delay, bonding_sysfs_store_option); |
353 | |
354 | /* Show the LACP activity and interval. */ |
355 | static ssize_t bonding_show_lacp_active(struct device *d, |
356 | struct device_attribute *attr, |
357 | char *buf) |
358 | { |
359 | struct bonding *bond = to_bond(d); |
360 | const struct bond_opt_value *val; |
361 | |
362 | val = bond_opt_get_val(option: BOND_OPT_LACP_ACTIVE, val: bond->params.lacp_active); |
363 | |
364 | return sysfs_emit(buf, fmt: "%s %d\n" , val->string, bond->params.lacp_active); |
365 | } |
366 | static DEVICE_ATTR(lacp_active, 0644, |
367 | bonding_show_lacp_active, bonding_sysfs_store_option); |
368 | |
369 | static ssize_t bonding_show_lacp_rate(struct device *d, |
370 | struct device_attribute *attr, |
371 | char *buf) |
372 | { |
373 | struct bonding *bond = to_bond(d); |
374 | const struct bond_opt_value *val; |
375 | |
376 | val = bond_opt_get_val(option: BOND_OPT_LACP_RATE, val: bond->params.lacp_fast); |
377 | |
378 | return sysfs_emit(buf, fmt: "%s %d\n" , val->string, bond->params.lacp_fast); |
379 | } |
380 | static DEVICE_ATTR(lacp_rate, 0644, |
381 | bonding_show_lacp_rate, bonding_sysfs_store_option); |
382 | |
383 | static ssize_t bonding_show_min_links(struct device *d, |
384 | struct device_attribute *attr, |
385 | char *buf) |
386 | { |
387 | struct bonding *bond = to_bond(d); |
388 | |
389 | return sysfs_emit(buf, fmt: "%u\n" , bond->params.min_links); |
390 | } |
391 | static DEVICE_ATTR(min_links, 0644, |
392 | bonding_show_min_links, bonding_sysfs_store_option); |
393 | |
394 | static ssize_t bonding_show_ad_select(struct device *d, |
395 | struct device_attribute *attr, |
396 | char *buf) |
397 | { |
398 | struct bonding *bond = to_bond(d); |
399 | const struct bond_opt_value *val; |
400 | |
401 | val = bond_opt_get_val(option: BOND_OPT_AD_SELECT, val: bond->params.ad_select); |
402 | |
403 | return sysfs_emit(buf, fmt: "%s %d\n" , val->string, bond->params.ad_select); |
404 | } |
405 | static DEVICE_ATTR(ad_select, 0644, |
406 | bonding_show_ad_select, bonding_sysfs_store_option); |
407 | |
408 | /* Show the number of peer notifications to send after a failover event. */ |
409 | static ssize_t bonding_show_num_peer_notif(struct device *d, |
410 | struct device_attribute *attr, |
411 | char *buf) |
412 | { |
413 | struct bonding *bond = to_bond(d); |
414 | |
415 | return sysfs_emit(buf, fmt: "%d\n" , bond->params.num_peer_notif); |
416 | } |
417 | static DEVICE_ATTR(num_grat_arp, 0644, |
418 | bonding_show_num_peer_notif, bonding_sysfs_store_option); |
419 | static DEVICE_ATTR(num_unsol_na, 0644, |
420 | bonding_show_num_peer_notif, bonding_sysfs_store_option); |
421 | |
422 | /* Show the MII monitor interval. */ |
423 | static ssize_t bonding_show_miimon(struct device *d, |
424 | struct device_attribute *attr, |
425 | char *buf) |
426 | { |
427 | struct bonding *bond = to_bond(d); |
428 | |
429 | return sysfs_emit(buf, fmt: "%d\n" , bond->params.miimon); |
430 | } |
431 | static DEVICE_ATTR(miimon, 0644, |
432 | bonding_show_miimon, bonding_sysfs_store_option); |
433 | |
434 | /* Show the primary slave. */ |
435 | static ssize_t bonding_show_primary(struct device *d, |
436 | struct device_attribute *attr, |
437 | char *buf) |
438 | { |
439 | struct bonding *bond = to_bond(d); |
440 | struct slave *primary; |
441 | int count = 0; |
442 | |
443 | rcu_read_lock(); |
444 | primary = rcu_dereference(bond->primary_slave); |
445 | if (primary) |
446 | count = sysfs_emit(buf, fmt: "%s\n" , primary->dev->name); |
447 | rcu_read_unlock(); |
448 | |
449 | return count; |
450 | } |
451 | static DEVICE_ATTR(primary, 0644, |
452 | bonding_show_primary, bonding_sysfs_store_option); |
453 | |
454 | /* Show the primary_reselect flag. */ |
455 | static ssize_t bonding_show_primary_reselect(struct device *d, |
456 | struct device_attribute *attr, |
457 | char *buf) |
458 | { |
459 | struct bonding *bond = to_bond(d); |
460 | const struct bond_opt_value *val; |
461 | |
462 | val = bond_opt_get_val(option: BOND_OPT_PRIMARY_RESELECT, |
463 | val: bond->params.primary_reselect); |
464 | |
465 | return sysfs_emit(buf, fmt: "%s %d\n" , |
466 | val->string, bond->params.primary_reselect); |
467 | } |
468 | static DEVICE_ATTR(primary_reselect, 0644, |
469 | bonding_show_primary_reselect, bonding_sysfs_store_option); |
470 | |
471 | /* Show the use_carrier flag. */ |
472 | static ssize_t bonding_show_carrier(struct device *d, |
473 | struct device_attribute *attr, |
474 | char *buf) |
475 | { |
476 | struct bonding *bond = to_bond(d); |
477 | |
478 | return sysfs_emit(buf, fmt: "%d\n" , bond->params.use_carrier); |
479 | } |
480 | static DEVICE_ATTR(use_carrier, 0644, |
481 | bonding_show_carrier, bonding_sysfs_store_option); |
482 | |
483 | |
484 | /* Show currently active_slave. */ |
485 | static ssize_t bonding_show_active_slave(struct device *d, |
486 | struct device_attribute *attr, |
487 | char *buf) |
488 | { |
489 | struct bonding *bond = to_bond(d); |
490 | struct net_device *slave_dev; |
491 | int count = 0; |
492 | |
493 | rcu_read_lock(); |
494 | slave_dev = bond_option_active_slave_get_rcu(bond); |
495 | if (slave_dev) |
496 | count = sysfs_emit(buf, fmt: "%s\n" , slave_dev->name); |
497 | rcu_read_unlock(); |
498 | |
499 | return count; |
500 | } |
501 | static DEVICE_ATTR(active_slave, 0644, |
502 | bonding_show_active_slave, bonding_sysfs_store_option); |
503 | |
504 | /* Show link status of the bond interface. */ |
505 | static ssize_t bonding_show_mii_status(struct device *d, |
506 | struct device_attribute *attr, |
507 | char *buf) |
508 | { |
509 | struct bonding *bond = to_bond(d); |
510 | bool active = netif_carrier_ok(dev: bond->dev); |
511 | |
512 | return sysfs_emit(buf, fmt: "%s\n" , active ? "up" : "down" ); |
513 | } |
514 | static DEVICE_ATTR(mii_status, 0444, bonding_show_mii_status, NULL); |
515 | |
516 | /* Show current 802.3ad aggregator ID. */ |
517 | static ssize_t bonding_show_ad_aggregator(struct device *d, |
518 | struct device_attribute *attr, |
519 | char *buf) |
520 | { |
521 | int count = 0; |
522 | struct bonding *bond = to_bond(d); |
523 | |
524 | if (BOND_MODE(bond) == BOND_MODE_8023AD) { |
525 | struct ad_info ad_info; |
526 | |
527 | count = sysfs_emit(buf, fmt: "%d\n" , |
528 | bond_3ad_get_active_agg_info(bond, ad_info: &ad_info) |
529 | ? 0 : ad_info.aggregator_id); |
530 | } |
531 | |
532 | return count; |
533 | } |
534 | static DEVICE_ATTR(ad_aggregator, 0444, bonding_show_ad_aggregator, NULL); |
535 | |
536 | |
537 | /* Show number of active 802.3ad ports. */ |
538 | static ssize_t bonding_show_ad_num_ports(struct device *d, |
539 | struct device_attribute *attr, |
540 | char *buf) |
541 | { |
542 | int count = 0; |
543 | struct bonding *bond = to_bond(d); |
544 | |
545 | if (BOND_MODE(bond) == BOND_MODE_8023AD) { |
546 | struct ad_info ad_info; |
547 | |
548 | count = sysfs_emit(buf, fmt: "%d\n" , |
549 | bond_3ad_get_active_agg_info(bond, ad_info: &ad_info) |
550 | ? 0 : ad_info.ports); |
551 | } |
552 | |
553 | return count; |
554 | } |
555 | static DEVICE_ATTR(ad_num_ports, 0444, bonding_show_ad_num_ports, NULL); |
556 | |
557 | |
558 | /* Show current 802.3ad actor key. */ |
559 | static ssize_t bonding_show_ad_actor_key(struct device *d, |
560 | struct device_attribute *attr, |
561 | char *buf) |
562 | { |
563 | int count = 0; |
564 | struct bonding *bond = to_bond(d); |
565 | |
566 | if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { |
567 | struct ad_info ad_info; |
568 | |
569 | count = sysfs_emit(buf, fmt: "%d\n" , |
570 | bond_3ad_get_active_agg_info(bond, ad_info: &ad_info) |
571 | ? 0 : ad_info.actor_key); |
572 | } |
573 | |
574 | return count; |
575 | } |
576 | static DEVICE_ATTR(ad_actor_key, 0444, bonding_show_ad_actor_key, NULL); |
577 | |
578 | |
579 | /* Show current 802.3ad partner key. */ |
580 | static ssize_t bonding_show_ad_partner_key(struct device *d, |
581 | struct device_attribute *attr, |
582 | char *buf) |
583 | { |
584 | int count = 0; |
585 | struct bonding *bond = to_bond(d); |
586 | |
587 | if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { |
588 | struct ad_info ad_info; |
589 | |
590 | count = sysfs_emit(buf, fmt: "%d\n" , |
591 | bond_3ad_get_active_agg_info(bond, ad_info: &ad_info) |
592 | ? 0 : ad_info.partner_key); |
593 | } |
594 | |
595 | return count; |
596 | } |
597 | static DEVICE_ATTR(ad_partner_key, 0444, bonding_show_ad_partner_key, NULL); |
598 | |
599 | |
600 | /* Show current 802.3ad partner mac. */ |
601 | static ssize_t bonding_show_ad_partner_mac(struct device *d, |
602 | struct device_attribute *attr, |
603 | char *buf) |
604 | { |
605 | int count = 0; |
606 | struct bonding *bond = to_bond(d); |
607 | |
608 | if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { |
609 | struct ad_info ad_info; |
610 | |
611 | if (!bond_3ad_get_active_agg_info(bond, ad_info: &ad_info)) |
612 | count = sysfs_emit(buf, fmt: "%pM\n" , ad_info.partner_system); |
613 | } |
614 | |
615 | return count; |
616 | } |
617 | static DEVICE_ATTR(ad_partner_mac, 0444, bonding_show_ad_partner_mac, NULL); |
618 | |
619 | /* Show the queue_ids of the slaves in the current bond. */ |
620 | static ssize_t bonding_show_queue_id(struct device *d, |
621 | struct device_attribute *attr, |
622 | char *buf) |
623 | { |
624 | struct bonding *bond = to_bond(d); |
625 | struct list_head *iter; |
626 | struct slave *slave; |
627 | int res = 0; |
628 | |
629 | if (!rtnl_trylock()) |
630 | return restart_syscall(); |
631 | |
632 | bond_for_each_slave(bond, slave, iter) { |
633 | if (res > (PAGE_SIZE - IFNAMSIZ - 6)) { |
634 | /* not enough space for another interface_name:queue_id pair */ |
635 | if ((PAGE_SIZE - res) > 10) |
636 | res = PAGE_SIZE - 10; |
637 | res += sysfs_emit_at(buf, at: res, fmt: "++more++ " ); |
638 | break; |
639 | } |
640 | res += sysfs_emit_at(buf, at: res, fmt: "%s:%d " , |
641 | slave->dev->name, slave->queue_id); |
642 | } |
643 | if (res) |
644 | buf[res-1] = '\n'; /* eat the leftover space */ |
645 | |
646 | rtnl_unlock(); |
647 | |
648 | return res; |
649 | } |
650 | static DEVICE_ATTR(queue_id, 0644, bonding_show_queue_id, |
651 | bonding_sysfs_store_option); |
652 | |
653 | |
654 | /* Show the all_slaves_active flag. */ |
655 | static ssize_t bonding_show_slaves_active(struct device *d, |
656 | struct device_attribute *attr, |
657 | char *buf) |
658 | { |
659 | struct bonding *bond = to_bond(d); |
660 | |
661 | return sysfs_emit(buf, fmt: "%d\n" , bond->params.all_slaves_active); |
662 | } |
663 | static DEVICE_ATTR(all_slaves_active, 0644, |
664 | bonding_show_slaves_active, bonding_sysfs_store_option); |
665 | |
666 | /* Show the number of IGMP membership reports to send on link failure */ |
667 | static ssize_t bonding_show_resend_igmp(struct device *d, |
668 | struct device_attribute *attr, |
669 | char *buf) |
670 | { |
671 | struct bonding *bond = to_bond(d); |
672 | |
673 | return sysfs_emit(buf, fmt: "%d\n" , bond->params.resend_igmp); |
674 | } |
675 | static DEVICE_ATTR(resend_igmp, 0644, |
676 | bonding_show_resend_igmp, bonding_sysfs_store_option); |
677 | |
678 | |
679 | static ssize_t bonding_show_lp_interval(struct device *d, |
680 | struct device_attribute *attr, |
681 | char *buf) |
682 | { |
683 | struct bonding *bond = to_bond(d); |
684 | |
685 | return sysfs_emit(buf, fmt: "%d\n" , bond->params.lp_interval); |
686 | } |
687 | static DEVICE_ATTR(lp_interval, 0644, |
688 | bonding_show_lp_interval, bonding_sysfs_store_option); |
689 | |
690 | static ssize_t bonding_show_tlb_dynamic_lb(struct device *d, |
691 | struct device_attribute *attr, |
692 | char *buf) |
693 | { |
694 | struct bonding *bond = to_bond(d); |
695 | |
696 | return sysfs_emit(buf, fmt: "%d\n" , bond->params.tlb_dynamic_lb); |
697 | } |
698 | static DEVICE_ATTR(tlb_dynamic_lb, 0644, |
699 | bonding_show_tlb_dynamic_lb, bonding_sysfs_store_option); |
700 | |
701 | static ssize_t bonding_show_packets_per_slave(struct device *d, |
702 | struct device_attribute *attr, |
703 | char *buf) |
704 | { |
705 | struct bonding *bond = to_bond(d); |
706 | unsigned int packets_per_slave = bond->params.packets_per_slave; |
707 | |
708 | return sysfs_emit(buf, fmt: "%u\n" , packets_per_slave); |
709 | } |
710 | static DEVICE_ATTR(packets_per_slave, 0644, |
711 | bonding_show_packets_per_slave, bonding_sysfs_store_option); |
712 | |
713 | static ssize_t bonding_show_ad_actor_sys_prio(struct device *d, |
714 | struct device_attribute *attr, |
715 | char *buf) |
716 | { |
717 | struct bonding *bond = to_bond(d); |
718 | |
719 | if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) |
720 | return sysfs_emit(buf, fmt: "%hu\n" , bond->params.ad_actor_sys_prio); |
721 | |
722 | return 0; |
723 | } |
724 | static DEVICE_ATTR(ad_actor_sys_prio, 0644, |
725 | bonding_show_ad_actor_sys_prio, bonding_sysfs_store_option); |
726 | |
727 | static ssize_t bonding_show_ad_actor_system(struct device *d, |
728 | struct device_attribute *attr, |
729 | char *buf) |
730 | { |
731 | struct bonding *bond = to_bond(d); |
732 | |
733 | if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) |
734 | return sysfs_emit(buf, fmt: "%pM\n" , bond->params.ad_actor_system); |
735 | |
736 | return 0; |
737 | } |
738 | |
739 | static DEVICE_ATTR(ad_actor_system, 0644, |
740 | bonding_show_ad_actor_system, bonding_sysfs_store_option); |
741 | |
742 | static ssize_t bonding_show_ad_user_port_key(struct device *d, |
743 | struct device_attribute *attr, |
744 | char *buf) |
745 | { |
746 | struct bonding *bond = to_bond(d); |
747 | |
748 | if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) |
749 | return sysfs_emit(buf, fmt: "%hu\n" , bond->params.ad_user_port_key); |
750 | |
751 | return 0; |
752 | } |
753 | static DEVICE_ATTR(ad_user_port_key, 0644, |
754 | bonding_show_ad_user_port_key, bonding_sysfs_store_option); |
755 | |
756 | static struct attribute *per_bond_attrs[] = { |
757 | &dev_attr_slaves.attr, |
758 | &dev_attr_mode.attr, |
759 | &dev_attr_fail_over_mac.attr, |
760 | &dev_attr_arp_validate.attr, |
761 | &dev_attr_arp_all_targets.attr, |
762 | &dev_attr_arp_interval.attr, |
763 | &dev_attr_arp_ip_target.attr, |
764 | &dev_attr_downdelay.attr, |
765 | &dev_attr_updelay.attr, |
766 | &dev_attr_peer_notif_delay.attr, |
767 | &dev_attr_lacp_active.attr, |
768 | &dev_attr_lacp_rate.attr, |
769 | &dev_attr_ad_select.attr, |
770 | &dev_attr_xmit_hash_policy.attr, |
771 | &dev_attr_num_grat_arp.attr, |
772 | &dev_attr_num_unsol_na.attr, |
773 | &dev_attr_miimon.attr, |
774 | &dev_attr_primary.attr, |
775 | &dev_attr_primary_reselect.attr, |
776 | &dev_attr_use_carrier.attr, |
777 | &dev_attr_active_slave.attr, |
778 | &dev_attr_mii_status.attr, |
779 | &dev_attr_ad_aggregator.attr, |
780 | &dev_attr_ad_num_ports.attr, |
781 | &dev_attr_ad_actor_key.attr, |
782 | &dev_attr_ad_partner_key.attr, |
783 | &dev_attr_ad_partner_mac.attr, |
784 | &dev_attr_queue_id.attr, |
785 | &dev_attr_all_slaves_active.attr, |
786 | &dev_attr_resend_igmp.attr, |
787 | &dev_attr_min_links.attr, |
788 | &dev_attr_lp_interval.attr, |
789 | &dev_attr_packets_per_slave.attr, |
790 | &dev_attr_tlb_dynamic_lb.attr, |
791 | &dev_attr_ad_actor_sys_prio.attr, |
792 | &dev_attr_ad_actor_system.attr, |
793 | &dev_attr_ad_user_port_key.attr, |
794 | &dev_attr_arp_missed_max.attr, |
795 | NULL, |
796 | }; |
797 | |
798 | static const struct attribute_group bonding_group = { |
799 | .name = "bonding" , |
800 | .attrs = per_bond_attrs, |
801 | }; |
802 | |
803 | /* Initialize sysfs. This sets up the bonding_masters file in |
804 | * /sys/class/net. |
805 | */ |
806 | int __net_init bond_create_sysfs(struct bond_net *bn) |
807 | { |
808 | int ret; |
809 | |
810 | bn->class_attr_bonding_masters = class_attr_bonding_masters; |
811 | sysfs_attr_init(&bn->class_attr_bonding_masters.attr); |
812 | |
813 | ret = netdev_class_create_file_ns(class_attr: &bn->class_attr_bonding_masters, |
814 | ns: bn->net); |
815 | /* Permit multiple loads of the module by ignoring failures to |
816 | * create the bonding_masters sysfs file. Bonding devices |
817 | * created by second or subsequent loads of the module will |
818 | * not be listed in, or controllable by, bonding_masters, but |
819 | * will have the usual "bonding" sysfs directory. |
820 | * |
821 | * This is done to preserve backwards compatibility for |
822 | * initscripts/sysconfig, which load bonding multiple times to |
823 | * configure multiple bonding devices. |
824 | */ |
825 | if (ret == -EEXIST) { |
826 | /* Is someone being kinky and naming a device bonding_master? */ |
827 | if (netdev_name_in_use(net: bn->net, |
828 | name: class_attr_bonding_masters.attr.name)) |
829 | pr_err("network device named %s already exists in sysfs\n" , |
830 | class_attr_bonding_masters.attr.name); |
831 | ret = 0; |
832 | } |
833 | |
834 | return ret; |
835 | |
836 | } |
837 | |
838 | /* Remove /sys/class/net/bonding_masters. */ |
839 | void __net_exit bond_destroy_sysfs(struct bond_net *bn) |
840 | { |
841 | netdev_class_remove_file_ns(class_attr: &bn->class_attr_bonding_masters, ns: bn->net); |
842 | } |
843 | |
844 | /* Initialize sysfs for each bond. This sets up and registers |
845 | * the 'bondctl' directory for each individual bond under /sys/class/net. |
846 | */ |
847 | void bond_prepare_sysfs_group(struct bonding *bond) |
848 | { |
849 | bond->dev->sysfs_groups[0] = &bonding_group; |
850 | } |
851 | |
852 | |