2 * Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
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.
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
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/>.
17 * The full GNU General Public License is included in this distribution in the
18 * file called LICENSE.
22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/device.h>
27 #include <linux/sched.h>
29 #include <linux/types.h>
30 #include <linux/string.h>
31 #include <linux/netdevice.h>
32 #include <linux/inetdevice.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 #include <linux/reciprocal_div.h>
46 #define to_dev(obj) container_of(obj, struct device, kobj)
47 #define to_bond(cd) ((struct bonding *)(netdev_priv(to_net_dev(cd))))
50 * "show" function for the bond_masters attribute.
51 * The class parameter is ignored.
53 static ssize_t bonding_show_bonds(struct class *cls,
54 struct class_attribute *attr,
58 container_of(attr, struct bond_net, class_attr_bonding_masters);
64 list_for_each_entry(bond, &bn->dev_list, bond_list) {
65 if (res > (PAGE_SIZE - IFNAMSIZ)) {
66 /* not enough space for another interface name */
67 if ((PAGE_SIZE - res) > 10)
69 res += sprintf(buf + res, "++more++ ");
72 res += sprintf(buf + res, "%s ", bond->dev->name);
75 buf[res-1] = '\n'; /* eat the leftover space */
81 static struct net_device *bond_get_by_name(struct bond_net *bn, const char *ifname)
85 list_for_each_entry(bond, &bn->dev_list, bond_list) {
86 if (strncmp(bond->dev->name, ifname, IFNAMSIZ) == 0)
93 * "store" function for the bond_masters attribute. This is what
94 * creates and deletes entire bonds.
96 * The class parameter is ignored.
100 static ssize_t bonding_store_bonds(struct class *cls,
101 struct class_attribute *attr,
102 const char *buffer, size_t count)
104 struct bond_net *bn =
105 container_of(attr, struct bond_net, class_attr_bonding_masters);
106 char command[IFNAMSIZ + 1] = {0, };
110 sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
111 ifname = command + 1;
112 if ((strlen(command) <= 1) ||
113 !dev_valid_name(ifname))
116 if (command[0] == '+') {
117 pr_info("%s is being created...\n", ifname);
118 rv = bond_create(bn->net, ifname);
121 pr_info("%s already exists.\n", ifname);
123 pr_info("%s creation failed.\n", ifname);
126 } else if (command[0] == '-') {
127 struct net_device *bond_dev;
130 bond_dev = bond_get_by_name(bn, ifname);
132 pr_info("%s is being deleted...\n", ifname);
133 unregister_netdevice(bond_dev);
135 pr_err("unable to delete non-existent %s\n", ifname);
142 /* Always return either count or an error. If you return 0, you'll
143 * get called forever, which is bad.
148 pr_err("no command found in bonding_masters. Use +ifname or -ifname.\n");
152 /* class attribute for bond_masters file. This ends up in /sys/class/net */
153 static const struct class_attribute class_attr_bonding_masters = {
155 .name = "bonding_masters",
156 .mode = S_IWUSR | S_IRUGO,
158 .show = bonding_show_bonds,
159 .store = bonding_store_bonds,
163 * Show the slaves in the current bond.
165 static ssize_t bonding_show_slaves(struct device *d,
166 struct device_attribute *attr, char *buf)
168 struct bonding *bond = to_bond(d);
169 struct list_head *iter;
174 return restart_syscall();
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++ ");
184 res += sprintf(buf + res, "%s ", slave->dev->name);
190 buf[res-1] = '\n'; /* eat the leftover space */
196 * Set the slaves in the current bond.
197 * This is supposed to be only thin wrapper for bond_enslave and bond_release.
198 * All hard work should be done there.
200 static ssize_t bonding_store_slaves(struct device *d,
201 struct device_attribute *attr,
202 const char *buffer, size_t count)
204 char command[IFNAMSIZ + 1] = { 0, };
206 int res, ret = count;
207 struct net_device *dev;
208 struct bonding *bond = to_bond(d);
211 return restart_syscall();
213 sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
214 ifname = command + 1;
215 if ((strlen(command) <= 1) ||
216 !dev_valid_name(ifname))
219 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
221 pr_info("%s: Interface %s does not exist!\n",
222 bond->dev->name, ifname);
227 switch (command[0]) {
229 pr_info("%s: Adding slave %s.\n", bond->dev->name, dev->name);
230 res = bond_enslave(bond->dev, dev);
234 pr_info("%s: Removing slave %s.\n", bond->dev->name, dev->name);
235 res = bond_release(bond->dev, dev);
247 pr_err("no command found in slaves file for bond %s. Use +ifname or -ifname.\n",
256 static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves,
257 bonding_store_slaves);
260 * Show and set the bonding mode. The bond interface must be down to
263 static ssize_t bonding_show_mode(struct device *d,
264 struct device_attribute *attr, char *buf)
266 struct bonding *bond = to_bond(d);
268 return sprintf(buf, "%s %d\n",
269 bond_mode_tbl[bond->params.mode].modename,
273 static ssize_t bonding_store_mode(struct device *d,
274 struct device_attribute *attr,
275 const char *buf, size_t count)
278 struct bonding *bond = to_bond(d);
280 new_value = bond_parse_parm(buf, bond_mode_tbl);
282 pr_err("%s: Ignoring invalid mode value %.*s.\n",
283 bond->dev->name, (int)strlen(buf) - 1, buf);
287 return restart_syscall();
289 ret = bond_option_mode_set(bond, new_value);
291 pr_info("%s: setting mode to %s (%d).\n",
292 bond->dev->name, bond_mode_tbl[new_value].modename,
300 static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
301 bonding_show_mode, bonding_store_mode);
304 * Show and set the bonding transmit hash method.
306 static ssize_t bonding_show_xmit_hash(struct device *d,
307 struct device_attribute *attr,
310 struct bonding *bond = to_bond(d);
312 return sprintf(buf, "%s %d\n",
313 xmit_hashtype_tbl[bond->params.xmit_policy].modename,
314 bond->params.xmit_policy);
317 static ssize_t bonding_store_xmit_hash(struct device *d,
318 struct device_attribute *attr,
319 const char *buf, size_t count)
322 struct bonding *bond = to_bond(d);
324 new_value = bond_parse_parm(buf, xmit_hashtype_tbl);
326 pr_err("%s: Ignoring invalid xmit hash policy value %.*s.\n",
328 (int)strlen(buf) - 1, buf);
333 return restart_syscall();
335 ret = bond_option_xmit_hash_policy_set(bond, new_value);
342 static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR,
343 bonding_show_xmit_hash, bonding_store_xmit_hash);
346 * Show and set arp_validate.
348 static ssize_t bonding_show_arp_validate(struct device *d,
349 struct device_attribute *attr,
352 struct bonding *bond = to_bond(d);
354 return sprintf(buf, "%s %d\n",
355 arp_validate_tbl[bond->params.arp_validate].modename,
356 bond->params.arp_validate);
359 static ssize_t bonding_store_arp_validate(struct device *d,
360 struct device_attribute *attr,
361 const char *buf, size_t count)
363 struct bonding *bond = to_bond(d);
366 new_value = bond_parse_parm(buf, arp_validate_tbl);
368 pr_err("%s: Ignoring invalid arp_validate value %s\n",
369 bond->dev->name, buf);
373 return restart_syscall();
375 ret = bond_option_arp_validate_set(bond, new_value);
384 static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate,
385 bonding_store_arp_validate);
387 * Show and set arp_all_targets.
389 static ssize_t bonding_show_arp_all_targets(struct device *d,
390 struct device_attribute *attr,
393 struct bonding *bond = to_bond(d);
394 int value = bond->params.arp_all_targets;
396 return sprintf(buf, "%s %d\n", arp_all_targets_tbl[value].modename,
400 static ssize_t bonding_store_arp_all_targets(struct device *d,
401 struct device_attribute *attr,
402 const char *buf, size_t count)
404 struct bonding *bond = to_bond(d);
407 new_value = bond_parse_parm(buf, arp_all_targets_tbl);
409 pr_err("%s: Ignoring invalid arp_all_targets value %s\n",
410 bond->dev->name, buf);
415 return restart_syscall();
417 ret = bond_option_arp_all_targets_set(bond, new_value);
426 static DEVICE_ATTR(arp_all_targets, S_IRUGO | S_IWUSR,
427 bonding_show_arp_all_targets, bonding_store_arp_all_targets);
430 * Show and store fail_over_mac. User only allowed to change the
431 * value when there are no slaves.
433 static ssize_t bonding_show_fail_over_mac(struct device *d,
434 struct device_attribute *attr,
437 struct bonding *bond = to_bond(d);
439 return sprintf(buf, "%s %d\n",
440 fail_over_mac_tbl[bond->params.fail_over_mac].modename,
441 bond->params.fail_over_mac);
444 static ssize_t bonding_store_fail_over_mac(struct device *d,
445 struct device_attribute *attr,
446 const char *buf, size_t count)
449 struct bonding *bond = to_bond(d);
451 new_value = bond_parse_parm(buf, fail_over_mac_tbl);
453 pr_err("%s: Ignoring invalid fail_over_mac value %s.\n",
454 bond->dev->name, buf);
459 return restart_syscall();
461 ret = bond_option_fail_over_mac_set(bond, new_value);
469 static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR,
470 bonding_show_fail_over_mac, bonding_store_fail_over_mac);
473 * Show and set the arp timer interval. There are two tricky bits
474 * here. First, if ARP monitoring is activated, then we must disable
475 * MII monitoring. Second, if the ARP timer isn't running, we must
478 static ssize_t bonding_show_arp_interval(struct device *d,
479 struct device_attribute *attr,
482 struct bonding *bond = to_bond(d);
484 return sprintf(buf, "%d\n", bond->params.arp_interval);
487 static ssize_t bonding_store_arp_interval(struct device *d,
488 struct device_attribute *attr,
489 const char *buf, size_t count)
491 struct bonding *bond = to_bond(d);
494 if (sscanf(buf, "%d", &new_value) != 1) {
495 pr_err("%s: no arp_interval value specified.\n",
501 return restart_syscall();
503 ret = bond_option_arp_interval_set(bond, new_value);
510 static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR,
511 bonding_show_arp_interval, bonding_store_arp_interval);
514 * Show and set the arp targets.
516 static ssize_t bonding_show_arp_targets(struct device *d,
517 struct device_attribute *attr,
521 struct bonding *bond = to_bond(d);
523 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
524 if (bond->params.arp_targets[i])
525 res += sprintf(buf + res, "%pI4 ",
526 &bond->params.arp_targets[i]);
529 buf[res-1] = '\n'; /* eat the leftover space */
533 static ssize_t bonding_store_arp_targets(struct device *d,
534 struct device_attribute *attr,
535 const char *buf, size_t count)
537 struct bonding *bond = to_bond(d);
541 if (!in4_pton(buf + 1, -1, (u8 *)&target, -1, NULL)) {
542 pr_err("%s: invalid ARP target %pI4 specified\n",
543 bond->dev->name, &target);
548 return restart_syscall();
551 ret = bond_option_arp_ip_target_add(bond, target);
552 else if (buf[0] == '-')
553 ret = bond_option_arp_ip_target_rem(bond, target);
555 pr_err("no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n",
564 static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets);
567 * Show and set the up and down delays. These must be multiples of the
568 * MII monitoring value, and are stored internally as the multiplier.
569 * Thus, we must translate to MS for the real world.
571 static ssize_t bonding_show_downdelay(struct device *d,
572 struct device_attribute *attr,
575 struct bonding *bond = to_bond(d);
577 return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon);
580 static ssize_t bonding_store_downdelay(struct device *d,
581 struct device_attribute *attr,
582 const char *buf, size_t count)
585 struct bonding *bond = to_bond(d);
587 if (sscanf(buf, "%d", &new_value) != 1) {
588 pr_err("%s: no down delay value specified.\n", bond->dev->name);
593 return restart_syscall();
595 ret = bond_option_downdelay_set(bond, new_value);
602 static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR,
603 bonding_show_downdelay, bonding_store_downdelay);
605 static ssize_t bonding_show_updelay(struct device *d,
606 struct device_attribute *attr,
609 struct bonding *bond = to_bond(d);
611 return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon);
615 static ssize_t bonding_store_updelay(struct device *d,
616 struct device_attribute *attr,
617 const char *buf, size_t count)
620 struct bonding *bond = to_bond(d);
622 if (sscanf(buf, "%d", &new_value) != 1) {
623 pr_err("%s: no up delay value specified.\n",
629 return restart_syscall();
631 ret = bond_option_updelay_set(bond, new_value);
638 static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR,
639 bonding_show_updelay, bonding_store_updelay);
642 * Show and set the LACP interval. Interface must be down, and the mode
643 * must be set to 802.3ad mode.
645 static ssize_t bonding_show_lacp(struct device *d,
646 struct device_attribute *attr,
649 struct bonding *bond = to_bond(d);
651 return sprintf(buf, "%s %d\n",
652 bond_lacp_tbl[bond->params.lacp_fast].modename,
653 bond->params.lacp_fast);
656 static ssize_t bonding_store_lacp(struct device *d,
657 struct device_attribute *attr,
658 const char *buf, size_t count)
660 struct bonding *bond = to_bond(d);
661 int new_value, ret = count;
664 return restart_syscall();
666 if (bond->dev->flags & IFF_UP) {
667 pr_err("%s: Unable to update LACP rate because interface is up.\n",
673 if (bond->params.mode != BOND_MODE_8023AD) {
674 pr_err("%s: Unable to update LACP rate because bond is not in 802.3ad mode.\n",
680 new_value = bond_parse_parm(buf, bond_lacp_tbl);
682 if ((new_value == 1) || (new_value == 0)) {
683 bond->params.lacp_fast = new_value;
684 bond_3ad_update_lacp_rate(bond);
685 pr_info("%s: Setting LACP rate to %s (%d).\n",
686 bond->dev->name, bond_lacp_tbl[new_value].modename,
689 pr_err("%s: Ignoring invalid LACP rate value %.*s.\n",
690 bond->dev->name, (int)strlen(buf) - 1, buf);
698 static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR,
699 bonding_show_lacp, bonding_store_lacp);
701 static ssize_t bonding_show_min_links(struct device *d,
702 struct device_attribute *attr,
705 struct bonding *bond = to_bond(d);
707 return sprintf(buf, "%d\n", bond->params.min_links);
710 static ssize_t bonding_store_min_links(struct device *d,
711 struct device_attribute *attr,
712 const char *buf, size_t count)
714 struct bonding *bond = to_bond(d);
716 unsigned int new_value;
718 ret = kstrtouint(buf, 0, &new_value);
720 pr_err("%s: Ignoring invalid min links value %s.\n",
721 bond->dev->name, buf);
726 return restart_syscall();
728 ret = bond_option_min_links_set(bond, new_value);
735 static DEVICE_ATTR(min_links, S_IRUGO | S_IWUSR,
736 bonding_show_min_links, bonding_store_min_links);
738 static ssize_t bonding_show_ad_select(struct device *d,
739 struct device_attribute *attr,
742 struct bonding *bond = to_bond(d);
744 return sprintf(buf, "%s %d\n",
745 ad_select_tbl[bond->params.ad_select].modename,
746 bond->params.ad_select);
750 static ssize_t bonding_store_ad_select(struct device *d,
751 struct device_attribute *attr,
752 const char *buf, size_t count)
754 int new_value, ret = count;
755 struct bonding *bond = to_bond(d);
757 if (bond->dev->flags & IFF_UP) {
758 pr_err("%s: Unable to update ad_select because interface is up.\n",
764 new_value = bond_parse_parm(buf, ad_select_tbl);
766 if (new_value != -1) {
767 bond->params.ad_select = new_value;
768 pr_info("%s: Setting ad_select to %s (%d).\n",
769 bond->dev->name, ad_select_tbl[new_value].modename,
772 pr_err("%s: Ignoring invalid ad_select value %.*s.\n",
773 bond->dev->name, (int)strlen(buf) - 1, buf);
779 static DEVICE_ATTR(ad_select, S_IRUGO | S_IWUSR,
780 bonding_show_ad_select, bonding_store_ad_select);
783 * Show and set the number of peer notifications to send after a failover event.
785 static ssize_t bonding_show_num_peer_notif(struct device *d,
786 struct device_attribute *attr,
789 struct bonding *bond = to_bond(d);
790 return sprintf(buf, "%d\n", bond->params.num_peer_notif);
793 static ssize_t bonding_store_num_peer_notif(struct device *d,
794 struct device_attribute *attr,
795 const char *buf, size_t count)
797 struct bonding *bond = to_bond(d);
801 ret = kstrtou8(buf, 10, &new_value);
803 pr_err("%s: invalid value %s specified.\n",
804 bond->dev->name, buf);
809 return restart_syscall();
811 ret = bond_option_num_peer_notif_set(bond, new_value);
818 static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR,
819 bonding_show_num_peer_notif, bonding_store_num_peer_notif);
820 static DEVICE_ATTR(num_unsol_na, S_IRUGO | S_IWUSR,
821 bonding_show_num_peer_notif, bonding_store_num_peer_notif);
824 * Show and set the MII monitor interval. There are two tricky bits
825 * here. First, if MII monitoring is activated, then we must disable
826 * ARP monitoring. Second, if the timer isn't running, we must
829 static ssize_t bonding_show_miimon(struct device *d,
830 struct device_attribute *attr,
833 struct bonding *bond = to_bond(d);
835 return sprintf(buf, "%d\n", bond->params.miimon);
838 static ssize_t bonding_store_miimon(struct device *d,
839 struct device_attribute *attr,
840 const char *buf, size_t count)
843 struct bonding *bond = to_bond(d);
845 if (sscanf(buf, "%d", &new_value) != 1) {
846 pr_err("%s: no miimon value specified.\n",
852 return restart_syscall();
854 ret = bond_option_miimon_set(bond, new_value);
861 static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR,
862 bonding_show_miimon, bonding_store_miimon);
865 * Show and set the primary slave. The store function is much
866 * simpler than bonding_store_slaves function because it only needs to
867 * handle one interface name.
868 * The bond must be a mode that supports a primary for this be
871 static ssize_t bonding_show_primary(struct device *d,
872 struct device_attribute *attr,
876 struct bonding *bond = to_bond(d);
878 if (bond->primary_slave)
879 count = sprintf(buf, "%s\n", bond->primary_slave->dev->name);
884 static ssize_t bonding_store_primary(struct device *d,
885 struct device_attribute *attr,
886 const char *buf, size_t count)
888 struct bonding *bond = to_bond(d);
889 char ifname[IFNAMSIZ];
892 sscanf(buf, "%15s", ifname); /* IFNAMSIZ */
893 if (ifname[0] == '\n')
897 return restart_syscall();
899 ret = bond_option_primary_set(bond, ifname);
906 static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR,
907 bonding_show_primary, bonding_store_primary);
910 * Show and set the primary_reselect flag.
912 static ssize_t bonding_show_primary_reselect(struct device *d,
913 struct device_attribute *attr,
916 struct bonding *bond = to_bond(d);
918 return sprintf(buf, "%s %d\n",
919 pri_reselect_tbl[bond->params.primary_reselect].modename,
920 bond->params.primary_reselect);
923 static ssize_t bonding_store_primary_reselect(struct device *d,
924 struct device_attribute *attr,
925 const char *buf, size_t count)
928 struct bonding *bond = to_bond(d);
930 new_value = bond_parse_parm(buf, pri_reselect_tbl);
932 pr_err("%s: Ignoring invalid primary_reselect value %.*s.\n",
934 (int) strlen(buf) - 1, buf);
939 return restart_syscall();
941 ret = bond_option_primary_reselect_set(bond, new_value);
948 static DEVICE_ATTR(primary_reselect, S_IRUGO | S_IWUSR,
949 bonding_show_primary_reselect,
950 bonding_store_primary_reselect);
953 * Show and set the use_carrier flag.
955 static ssize_t bonding_show_carrier(struct device *d,
956 struct device_attribute *attr,
959 struct bonding *bond = to_bond(d);
961 return sprintf(buf, "%d\n", bond->params.use_carrier);
964 static ssize_t bonding_store_carrier(struct device *d,
965 struct device_attribute *attr,
966 const char *buf, size_t count)
969 struct bonding *bond = to_bond(d);
971 if (sscanf(buf, "%d", &new_value) != 1) {
972 pr_err("%s: no use_carrier value specified.\n",
978 return restart_syscall();
980 ret = bond_option_use_carrier_set(bond, new_value);
987 static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR,
988 bonding_show_carrier, bonding_store_carrier);
992 * Show and set currently active_slave.
994 static ssize_t bonding_show_active_slave(struct device *d,
995 struct device_attribute *attr,
998 struct bonding *bond = to_bond(d);
999 struct net_device *slave_dev;
1003 slave_dev = bond_option_active_slave_get_rcu(bond);
1005 count = sprintf(buf, "%s\n", slave_dev->name);
1011 static ssize_t bonding_store_active_slave(struct device *d,
1012 struct device_attribute *attr,
1013 const char *buf, size_t count)
1016 struct bonding *bond = to_bond(d);
1017 char ifname[IFNAMSIZ];
1018 struct net_device *dev;
1020 if (!rtnl_trylock())
1021 return restart_syscall();
1023 sscanf(buf, "%15s", ifname); /* IFNAMSIZ */
1024 if (!strlen(ifname) || buf[0] == '\n') {
1027 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
1034 ret = bond_option_active_slave_set(bond, dev);
1044 static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR,
1045 bonding_show_active_slave, bonding_store_active_slave);
1049 * Show link status of the bond interface.
1051 static ssize_t bonding_show_mii_status(struct device *d,
1052 struct device_attribute *attr,
1055 struct bonding *bond = to_bond(d);
1057 return sprintf(buf, "%s\n", bond->curr_active_slave ? "up" : "down");
1059 static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL);
1062 * Show current 802.3ad aggregator ID.
1064 static ssize_t bonding_show_ad_aggregator(struct device *d,
1065 struct device_attribute *attr,
1069 struct bonding *bond = to_bond(d);
1071 if (bond->params.mode == BOND_MODE_8023AD) {
1072 struct ad_info ad_info;
1073 count = sprintf(buf, "%d\n",
1074 bond_3ad_get_active_agg_info(bond, &ad_info)
1075 ? 0 : ad_info.aggregator_id);
1080 static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL);
1084 * Show number of active 802.3ad ports.
1086 static ssize_t bonding_show_ad_num_ports(struct device *d,
1087 struct device_attribute *attr,
1091 struct bonding *bond = to_bond(d);
1093 if (bond->params.mode == BOND_MODE_8023AD) {
1094 struct ad_info ad_info;
1095 count = sprintf(buf, "%d\n",
1096 bond_3ad_get_active_agg_info(bond, &ad_info)
1097 ? 0 : ad_info.ports);
1102 static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL);
1106 * Show current 802.3ad actor key.
1108 static ssize_t bonding_show_ad_actor_key(struct device *d,
1109 struct device_attribute *attr,
1113 struct bonding *bond = to_bond(d);
1115 if (bond->params.mode == BOND_MODE_8023AD) {
1116 struct ad_info ad_info;
1117 count = sprintf(buf, "%d\n",
1118 bond_3ad_get_active_agg_info(bond, &ad_info)
1119 ? 0 : ad_info.actor_key);
1124 static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL);
1128 * Show current 802.3ad partner key.
1130 static ssize_t bonding_show_ad_partner_key(struct device *d,
1131 struct device_attribute *attr,
1135 struct bonding *bond = to_bond(d);
1137 if (bond->params.mode == BOND_MODE_8023AD) {
1138 struct ad_info ad_info;
1139 count = sprintf(buf, "%d\n",
1140 bond_3ad_get_active_agg_info(bond, &ad_info)
1141 ? 0 : ad_info.partner_key);
1146 static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL);
1150 * Show current 802.3ad partner mac.
1152 static ssize_t bonding_show_ad_partner_mac(struct device *d,
1153 struct device_attribute *attr,
1157 struct bonding *bond = to_bond(d);
1159 if (bond->params.mode == BOND_MODE_8023AD) {
1160 struct ad_info ad_info;
1161 if (!bond_3ad_get_active_agg_info(bond, &ad_info))
1162 count = sprintf(buf, "%pM\n", ad_info.partner_system);
1167 static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL);
1170 * Show the queue_ids of the slaves in the current bond.
1172 static ssize_t bonding_show_queue_id(struct device *d,
1173 struct device_attribute *attr,
1176 struct bonding *bond = to_bond(d);
1177 struct list_head *iter;
1178 struct slave *slave;
1181 if (!rtnl_trylock())
1182 return restart_syscall();
1184 bond_for_each_slave(bond, slave, iter) {
1185 if (res > (PAGE_SIZE - IFNAMSIZ - 6)) {
1186 /* not enough space for another interface_name:queue_id pair */
1187 if ((PAGE_SIZE - res) > 10)
1188 res = PAGE_SIZE - 10;
1189 res += sprintf(buf + res, "++more++ ");
1192 res += sprintf(buf + res, "%s:%d ",
1193 slave->dev->name, slave->queue_id);
1196 buf[res-1] = '\n'; /* eat the leftover space */
1204 * Set the queue_ids of the slaves in the current bond. The bond
1205 * interface must be enslaved for this to work.
1207 static ssize_t bonding_store_queue_id(struct device *d,
1208 struct device_attribute *attr,
1209 const char *buffer, size_t count)
1211 struct slave *slave, *update_slave;
1212 struct bonding *bond = to_bond(d);
1213 struct list_head *iter;
1217 struct net_device *sdev = NULL;
1219 if (!rtnl_trylock())
1220 return restart_syscall();
1222 /* delim will point to queue id if successful */
1223 delim = strchr(buffer, ':');
1228 * Terminate string that points to device name and bump it
1229 * up one, so we can read the queue id there.
1232 if (sscanf(++delim, "%hd\n", &qid) != 1)
1235 /* Check buffer length, valid ifname and queue id */
1236 if (strlen(buffer) > IFNAMSIZ ||
1237 !dev_valid_name(buffer) ||
1238 qid > bond->dev->real_num_tx_queues)
1241 /* Get the pointer to that interface if it exists */
1242 sdev = __dev_get_by_name(dev_net(bond->dev), buffer);
1246 /* Search for thes slave and check for duplicate qids */
1247 update_slave = NULL;
1248 bond_for_each_slave(bond, slave, iter) {
1249 if (sdev == slave->dev)
1251 * We don't need to check the matching
1252 * slave for dups, since we're overwriting it
1254 update_slave = slave;
1255 else if (qid && qid == slave->queue_id) {
1263 /* Actually set the qids for the slave */
1264 update_slave->queue_id = qid;
1271 pr_info("invalid input for queue_id set for %s.\n",
1277 static DEVICE_ATTR(queue_id, S_IRUGO | S_IWUSR, bonding_show_queue_id,
1278 bonding_store_queue_id);
1282 * Show and set the all_slaves_active flag.
1284 static ssize_t bonding_show_slaves_active(struct device *d,
1285 struct device_attribute *attr,
1288 struct bonding *bond = to_bond(d);
1290 return sprintf(buf, "%d\n", bond->params.all_slaves_active);
1293 static ssize_t bonding_store_slaves_active(struct device *d,
1294 struct device_attribute *attr,
1295 const char *buf, size_t count)
1297 struct bonding *bond = to_bond(d);
1300 if (sscanf(buf, "%d", &new_value) != 1) {
1301 pr_err("%s: no all_slaves_active value specified.\n",
1306 if (!rtnl_trylock())
1307 return restart_syscall();
1309 ret = bond_option_all_slaves_active_set(bond, new_value);
1316 static DEVICE_ATTR(all_slaves_active, S_IRUGO | S_IWUSR,
1317 bonding_show_slaves_active, bonding_store_slaves_active);
1320 * Show and set the number of IGMP membership reports to send on link failure
1322 static ssize_t bonding_show_resend_igmp(struct device *d,
1323 struct device_attribute *attr,
1326 struct bonding *bond = to_bond(d);
1328 return sprintf(buf, "%d\n", bond->params.resend_igmp);
1331 static ssize_t bonding_store_resend_igmp(struct device *d,
1332 struct device_attribute *attr,
1333 const char *buf, size_t count)
1335 int new_value, ret = count;
1336 struct bonding *bond = to_bond(d);
1338 if (sscanf(buf, "%d", &new_value) != 1) {
1339 pr_err("%s: no resend_igmp value specified.\n",
1344 if (!rtnl_trylock())
1345 return restart_syscall();
1347 ret = bond_option_resend_igmp_set(bond, new_value);
1355 static DEVICE_ATTR(resend_igmp, S_IRUGO | S_IWUSR,
1356 bonding_show_resend_igmp, bonding_store_resend_igmp);
1359 static ssize_t bonding_show_lp_interval(struct device *d,
1360 struct device_attribute *attr,
1363 struct bonding *bond = to_bond(d);
1364 return sprintf(buf, "%d\n", bond->params.lp_interval);
1367 static ssize_t bonding_store_lp_interval(struct device *d,
1368 struct device_attribute *attr,
1369 const char *buf, size_t count)
1371 struct bonding *bond = to_bond(d);
1372 int new_value, ret = count;
1374 if (sscanf(buf, "%d", &new_value) != 1) {
1375 pr_err("%s: no lp interval value specified.\n",
1381 if (new_value <= 0) {
1382 pr_err ("%s: lp_interval must be between 1 and %d\n",
1383 bond->dev->name, INT_MAX);
1388 bond->params.lp_interval = new_value;
1393 static DEVICE_ATTR(lp_interval, S_IRUGO | S_IWUSR,
1394 bonding_show_lp_interval, bonding_store_lp_interval);
1396 static ssize_t bonding_show_packets_per_slave(struct device *d,
1397 struct device_attribute *attr,
1400 struct bonding *bond = to_bond(d);
1401 unsigned int packets_per_slave = bond->params.packets_per_slave;
1403 if (packets_per_slave > 1)
1404 packets_per_slave = reciprocal_value(packets_per_slave);
1406 return sprintf(buf, "%u\n", packets_per_slave);
1409 static ssize_t bonding_store_packets_per_slave(struct device *d,
1410 struct device_attribute *attr,
1411 const char *buf, size_t count)
1413 struct bonding *bond = to_bond(d);
1414 int new_value, ret = count;
1416 if (sscanf(buf, "%d", &new_value) != 1) {
1417 pr_err("%s: no packets_per_slave value specified.\n",
1422 if (new_value < 0 || new_value > USHRT_MAX) {
1423 pr_err("%s: packets_per_slave must be between 0 and %u\n",
1424 bond->dev->name, USHRT_MAX);
1428 if (bond->params.mode != BOND_MODE_ROUNDROBIN)
1429 pr_warn("%s: Warning: packets_per_slave has effect only in balance-rr mode\n",
1432 bond->params.packets_per_slave = reciprocal_value(new_value);
1434 bond->params.packets_per_slave = new_value;
1439 static DEVICE_ATTR(packets_per_slave, S_IRUGO | S_IWUSR,
1440 bonding_show_packets_per_slave,
1441 bonding_store_packets_per_slave);
1443 static struct attribute *per_bond_attrs[] = {
1444 &dev_attr_slaves.attr,
1445 &dev_attr_mode.attr,
1446 &dev_attr_fail_over_mac.attr,
1447 &dev_attr_arp_validate.attr,
1448 &dev_attr_arp_all_targets.attr,
1449 &dev_attr_arp_interval.attr,
1450 &dev_attr_arp_ip_target.attr,
1451 &dev_attr_downdelay.attr,
1452 &dev_attr_updelay.attr,
1453 &dev_attr_lacp_rate.attr,
1454 &dev_attr_ad_select.attr,
1455 &dev_attr_xmit_hash_policy.attr,
1456 &dev_attr_num_grat_arp.attr,
1457 &dev_attr_num_unsol_na.attr,
1458 &dev_attr_miimon.attr,
1459 &dev_attr_primary.attr,
1460 &dev_attr_primary_reselect.attr,
1461 &dev_attr_use_carrier.attr,
1462 &dev_attr_active_slave.attr,
1463 &dev_attr_mii_status.attr,
1464 &dev_attr_ad_aggregator.attr,
1465 &dev_attr_ad_num_ports.attr,
1466 &dev_attr_ad_actor_key.attr,
1467 &dev_attr_ad_partner_key.attr,
1468 &dev_attr_ad_partner_mac.attr,
1469 &dev_attr_queue_id.attr,
1470 &dev_attr_all_slaves_active.attr,
1471 &dev_attr_resend_igmp.attr,
1472 &dev_attr_min_links.attr,
1473 &dev_attr_lp_interval.attr,
1474 &dev_attr_packets_per_slave.attr,
1478 static struct attribute_group bonding_group = {
1480 .attrs = per_bond_attrs,
1484 * Initialize sysfs. This sets up the bonding_masters file in
1487 int bond_create_sysfs(struct bond_net *bn)
1491 bn->class_attr_bonding_masters = class_attr_bonding_masters;
1492 sysfs_attr_init(&bn->class_attr_bonding_masters.attr);
1494 ret = netdev_class_create_file_ns(&bn->class_attr_bonding_masters,
1497 * Permit multiple loads of the module by ignoring failures to
1498 * create the bonding_masters sysfs file. Bonding devices
1499 * created by second or subsequent loads of the module will
1500 * not be listed in, or controllable by, bonding_masters, but
1501 * will have the usual "bonding" sysfs directory.
1503 * This is done to preserve backwards compatibility for
1504 * initscripts/sysconfig, which load bonding multiple times to
1505 * configure multiple bonding devices.
1507 if (ret == -EEXIST) {
1508 /* Is someone being kinky and naming a device bonding_master? */
1509 if (__dev_get_by_name(bn->net,
1510 class_attr_bonding_masters.attr.name))
1511 pr_err("network device named %s already exists in sysfs",
1512 class_attr_bonding_masters.attr.name);
1521 * Remove /sys/class/net/bonding_masters.
1523 void bond_destroy_sysfs(struct bond_net *bn)
1525 netdev_class_remove_file_ns(&bn->class_attr_bonding_masters, bn->net);
1529 * Initialize sysfs for each bond. This sets up and registers
1530 * the 'bondctl' directory for each individual bond under /sys/class/net.
1532 void bond_prepare_sysfs_group(struct bonding *bond)
1534 bond->dev->sysfs_groups[0] = &bonding_group;