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