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>
45 #define to_dev(obj) container_of(obj, struct device, kobj)
46 #define to_bond(cd) ((struct bonding *)(netdev_priv(to_net_dev(cd))))
49 * "show" function for the bond_masters attribute.
50 * The class parameter is ignored.
52 static ssize_t bonding_show_bonds(struct class *cls,
53 struct class_attribute *attr,
57 container_of(attr, struct bond_net, class_attr_bonding_masters);
63 list_for_each_entry(bond, &bn->dev_list, bond_list) {
64 if (res > (PAGE_SIZE - IFNAMSIZ)) {
65 /* not enough space for another interface name */
66 if ((PAGE_SIZE - res) > 10)
68 res += sprintf(buf + res, "++more++ ");
71 res += sprintf(buf + res, "%s ", bond->dev->name);
74 buf[res-1] = '\n'; /* eat the leftover space */
80 static struct net_device *bond_get_by_name(struct bond_net *bn, const char *ifname)
84 list_for_each_entry(bond, &bn->dev_list, bond_list) {
85 if (strncmp(bond->dev->name, ifname, IFNAMSIZ) == 0)
92 * "store" function for the bond_masters attribute. This is what
93 * creates and deletes entire bonds.
95 * The class parameter is ignored.
99 static ssize_t bonding_store_bonds(struct class *cls,
100 struct class_attribute *attr,
101 const char *buffer, size_t count)
103 struct bond_net *bn =
104 container_of(attr, struct bond_net, class_attr_bonding_masters);
105 char command[IFNAMSIZ + 1] = {0, };
109 sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
110 ifname = command + 1;
111 if ((strlen(command) <= 1) ||
112 !dev_valid_name(ifname))
115 if (command[0] == '+') {
116 pr_info("%s is being created...\n", ifname);
117 rv = bond_create(bn->net, ifname);
120 pr_info("%s already exists.\n", ifname);
122 pr_info("%s creation failed.\n", ifname);
125 } else if (command[0] == '-') {
126 struct net_device *bond_dev;
129 bond_dev = bond_get_by_name(bn, ifname);
131 pr_info("%s is being deleted...\n", ifname);
132 unregister_netdevice(bond_dev);
134 pr_err("unable to delete non-existent %s\n", ifname);
141 /* Always return either count or an error. If you return 0, you'll
142 * get called forever, which is bad.
147 pr_err("no command found in bonding_masters. Use +ifname or -ifname.\n");
151 /* class attribute for bond_masters file. This ends up in /sys/class/net */
152 static const struct class_attribute class_attr_bonding_masters = {
154 .name = "bonding_masters",
155 .mode = S_IWUSR | S_IRUGO,
157 .show = bonding_show_bonds,
158 .store = bonding_store_bonds,
162 * Show the slaves in the current bond.
164 static ssize_t bonding_show_slaves(struct device *d,
165 struct device_attribute *attr, char *buf)
167 struct bonding *bond = to_bond(d);
168 struct list_head *iter;
173 return restart_syscall();
175 bond_for_each_slave(bond, slave, iter) {
176 if (res > (PAGE_SIZE - IFNAMSIZ)) {
177 /* not enough space for another interface name */
178 if ((PAGE_SIZE - res) > 10)
179 res = PAGE_SIZE - 10;
180 res += sprintf(buf + res, "++more++ ");
183 res += sprintf(buf + res, "%s ", slave->dev->name);
189 buf[res-1] = '\n'; /* eat the leftover space */
195 * Set the slaves in the current bond.
196 * This is supposed to be only thin wrapper for bond_enslave and bond_release.
197 * All hard work should be done there.
199 static ssize_t bonding_store_slaves(struct device *d,
200 struct device_attribute *attr,
201 const char *buffer, size_t count)
203 char command[IFNAMSIZ + 1] = { 0, };
205 int res, ret = count;
206 struct net_device *dev;
207 struct bonding *bond = to_bond(d);
210 return restart_syscall();
212 sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
213 ifname = command + 1;
214 if ((strlen(command) <= 1) ||
215 !dev_valid_name(ifname))
218 dev = __dev_get_by_name(dev_net(bond->dev), ifname);
220 pr_info("%s: Interface %s does not exist!\n",
221 bond->dev->name, ifname);
226 switch (command[0]) {
228 pr_info("%s: Adding slave %s.\n", bond->dev->name, dev->name);
229 res = bond_enslave(bond->dev, dev);
233 pr_info("%s: Removing slave %s.\n", bond->dev->name, dev->name);
234 res = bond_release(bond->dev, dev);
246 pr_err("no command found in slaves file for bond %s. Use +ifname or -ifname.\n",
255 static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves,
256 bonding_store_slaves);
259 * Show and set the bonding mode. The bond interface must be down to
262 static ssize_t bonding_show_mode(struct device *d,
263 struct device_attribute *attr, char *buf)
265 struct bonding *bond = to_bond(d);
266 struct bond_opt_value *val;
268 val = bond_opt_get_val(BOND_OPT_MODE, bond->params.mode);
270 return sprintf(buf, "%s %d\n", val->string, bond->params.mode);
273 static ssize_t bonding_store_mode(struct device *d,
274 struct device_attribute *attr,
275 const char *buf, size_t count)
277 struct bonding *bond = to_bond(d);
280 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_MODE, (char *)buf);
286 static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
287 bonding_show_mode, bonding_store_mode);
290 * Show and set the bonding transmit hash method.
292 static ssize_t bonding_show_xmit_hash(struct device *d,
293 struct device_attribute *attr,
296 struct bonding *bond = to_bond(d);
297 struct bond_opt_value *val;
299 val = bond_opt_get_val(BOND_OPT_XMIT_HASH, bond->params.xmit_policy);
301 return sprintf(buf, "%s %d\n", val->string, bond->params.xmit_policy);
304 static ssize_t bonding_store_xmit_hash(struct device *d,
305 struct device_attribute *attr,
306 const char *buf, size_t count)
308 struct bonding *bond = to_bond(d);
311 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_XMIT_HASH, (char *)buf);
317 static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR,
318 bonding_show_xmit_hash, bonding_store_xmit_hash);
321 * Show and set arp_validate.
323 static ssize_t bonding_show_arp_validate(struct device *d,
324 struct device_attribute *attr,
327 struct bonding *bond = to_bond(d);
328 struct bond_opt_value *val;
330 val = bond_opt_get_val(BOND_OPT_ARP_VALIDATE,
331 bond->params.arp_validate);
333 return sprintf(buf, "%s %d\n", val->string, bond->params.arp_validate);
336 static ssize_t bonding_store_arp_validate(struct device *d,
337 struct device_attribute *attr,
338 const char *buf, size_t count)
340 struct bonding *bond = to_bond(d);
343 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_ARP_VALIDATE, (char *)buf);
350 static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate,
351 bonding_store_arp_validate);
353 * Show and set arp_all_targets.
355 static ssize_t bonding_show_arp_all_targets(struct device *d,
356 struct device_attribute *attr,
359 struct bonding *bond = to_bond(d);
360 struct bond_opt_value *val;
362 val = bond_opt_get_val(BOND_OPT_ARP_ALL_TARGETS,
363 bond->params.arp_all_targets);
364 return sprintf(buf, "%s %d\n",
365 val->string, bond->params.arp_all_targets);
368 static ssize_t bonding_store_arp_all_targets(struct device *d,
369 struct device_attribute *attr,
370 const char *buf, size_t count)
372 struct bonding *bond = to_bond(d);
375 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_ARP_ALL_TARGETS, (char *)buf);
382 static DEVICE_ATTR(arp_all_targets, S_IRUGO | S_IWUSR,
383 bonding_show_arp_all_targets, bonding_store_arp_all_targets);
386 * Show and store fail_over_mac. User only allowed to change the
387 * value when there are no slaves.
389 static ssize_t bonding_show_fail_over_mac(struct device *d,
390 struct device_attribute *attr,
393 struct bonding *bond = to_bond(d);
394 struct bond_opt_value *val;
396 val = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC,
397 bond->params.fail_over_mac);
399 return sprintf(buf, "%s %d\n", val->string, bond->params.fail_over_mac);
402 static ssize_t bonding_store_fail_over_mac(struct device *d,
403 struct device_attribute *attr,
404 const char *buf, size_t count)
406 struct bonding *bond = to_bond(d);
409 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_FAIL_OVER_MAC, (char *)buf);
416 static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR,
417 bonding_show_fail_over_mac, bonding_store_fail_over_mac);
420 * Show and set the arp timer interval. There are two tricky bits
421 * here. First, if ARP monitoring is activated, then we must disable
422 * MII monitoring. Second, if the ARP timer isn't running, we must
425 static ssize_t bonding_show_arp_interval(struct device *d,
426 struct device_attribute *attr,
429 struct bonding *bond = to_bond(d);
431 return sprintf(buf, "%d\n", bond->params.arp_interval);
434 static ssize_t bonding_store_arp_interval(struct device *d,
435 struct device_attribute *attr,
436 const char *buf, size_t count)
438 struct bonding *bond = to_bond(d);
441 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_ARP_INTERVAL, (char *)buf);
447 static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR,
448 bonding_show_arp_interval, bonding_store_arp_interval);
451 * Show and set the arp targets.
453 static ssize_t bonding_show_arp_targets(struct device *d,
454 struct device_attribute *attr,
457 struct bonding *bond = to_bond(d);
460 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
461 if (bond->params.arp_targets[i])
462 res += sprintf(buf + res, "%pI4 ",
463 &bond->params.arp_targets[i]);
466 buf[res-1] = '\n'; /* eat the leftover space */
471 static ssize_t bonding_store_arp_targets(struct device *d,
472 struct device_attribute *attr,
473 const char *buf, size_t count)
475 struct bonding *bond = to_bond(d);
478 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_ARP_TARGETS, (char *)buf);
484 static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets);
487 * Show and set the up and down delays. These must be multiples of the
488 * MII monitoring value, and are stored internally as the multiplier.
489 * Thus, we must translate to MS for the real world.
491 static ssize_t bonding_show_downdelay(struct device *d,
492 struct device_attribute *attr,
495 struct bonding *bond = to_bond(d);
497 return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon);
500 static ssize_t bonding_store_downdelay(struct device *d,
501 struct device_attribute *attr,
502 const char *buf, size_t count)
504 struct bonding *bond = to_bond(d);
507 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_DOWNDELAY, (char *)buf);
513 static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR,
514 bonding_show_downdelay, bonding_store_downdelay);
516 static ssize_t bonding_show_updelay(struct device *d,
517 struct device_attribute *attr,
520 struct bonding *bond = to_bond(d);
522 return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon);
526 static ssize_t bonding_store_updelay(struct device *d,
527 struct device_attribute *attr,
528 const char *buf, size_t count)
530 struct bonding *bond = to_bond(d);
533 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_UPDELAY, (char *)buf);
539 static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR,
540 bonding_show_updelay, bonding_store_updelay);
543 * Show and set the LACP interval. Interface must be down, and the mode
544 * must be set to 802.3ad mode.
546 static ssize_t bonding_show_lacp(struct device *d,
547 struct device_attribute *attr,
550 struct bonding *bond = to_bond(d);
551 struct bond_opt_value *val;
553 val = bond_opt_get_val(BOND_OPT_LACP_RATE, bond->params.lacp_fast);
555 return sprintf(buf, "%s %d\n", val->string, bond->params.lacp_fast);
558 static ssize_t bonding_store_lacp(struct device *d,
559 struct device_attribute *attr,
560 const char *buf, size_t count)
562 struct bonding *bond = to_bond(d);
565 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_LACP_RATE, (char *)buf);
571 static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR,
572 bonding_show_lacp, bonding_store_lacp);
574 static ssize_t bonding_show_min_links(struct device *d,
575 struct device_attribute *attr,
578 struct bonding *bond = to_bond(d);
580 return sprintf(buf, "%d\n", bond->params.min_links);
583 static ssize_t bonding_store_min_links(struct device *d,
584 struct device_attribute *attr,
585 const char *buf, size_t count)
587 struct bonding *bond = to_bond(d);
590 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_MINLINKS, (char *)buf);
596 static DEVICE_ATTR(min_links, S_IRUGO | S_IWUSR,
597 bonding_show_min_links, bonding_store_min_links);
599 static ssize_t bonding_show_ad_select(struct device *d,
600 struct device_attribute *attr,
603 struct bonding *bond = to_bond(d);
604 struct bond_opt_value *val;
606 val = bond_opt_get_val(BOND_OPT_AD_SELECT, bond->params.ad_select);
608 return sprintf(buf, "%s %d\n", val->string, bond->params.ad_select);
612 static ssize_t bonding_store_ad_select(struct device *d,
613 struct device_attribute *attr,
614 const char *buf, size_t count)
616 struct bonding *bond = to_bond(d);
619 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_AD_SELECT, (char *)buf);
625 static DEVICE_ATTR(ad_select, S_IRUGO | S_IWUSR,
626 bonding_show_ad_select, bonding_store_ad_select);
629 * Show and set the number of peer notifications to send after a failover event.
631 static ssize_t bonding_show_num_peer_notif(struct device *d,
632 struct device_attribute *attr,
635 struct bonding *bond = to_bond(d);
636 return sprintf(buf, "%d\n", bond->params.num_peer_notif);
639 static ssize_t bonding_store_num_peer_notif(struct device *d,
640 struct device_attribute *attr,
641 const char *buf, size_t count)
643 struct bonding *bond = to_bond(d);
646 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_NUM_PEER_NOTIF, (char *)buf);
652 static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR,
653 bonding_show_num_peer_notif, bonding_store_num_peer_notif);
654 static DEVICE_ATTR(num_unsol_na, S_IRUGO | S_IWUSR,
655 bonding_show_num_peer_notif, bonding_store_num_peer_notif);
658 * Show and set the MII monitor interval. There are two tricky bits
659 * here. First, if MII monitoring is activated, then we must disable
660 * ARP monitoring. Second, if the timer isn't running, we must
663 static ssize_t bonding_show_miimon(struct device *d,
664 struct device_attribute *attr,
667 struct bonding *bond = to_bond(d);
669 return sprintf(buf, "%d\n", bond->params.miimon);
672 static ssize_t bonding_store_miimon(struct device *d,
673 struct device_attribute *attr,
674 const char *buf, size_t count)
676 struct bonding *bond = to_bond(d);
679 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_MIIMON, (char *)buf);
685 static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR,
686 bonding_show_miimon, bonding_store_miimon);
689 * Show and set the primary slave. The store function is much
690 * simpler than bonding_store_slaves function because it only needs to
691 * handle one interface name.
692 * The bond must be a mode that supports a primary for this be
695 static ssize_t bonding_show_primary(struct device *d,
696 struct device_attribute *attr,
700 struct bonding *bond = to_bond(d);
702 if (bond->primary_slave)
703 count = sprintf(buf, "%s\n", bond->primary_slave->dev->name);
708 static ssize_t bonding_store_primary(struct device *d,
709 struct device_attribute *attr,
710 const char *buf, size_t count)
712 struct bonding *bond = to_bond(d);
715 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_PRIMARY, (char *)buf);
721 static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR,
722 bonding_show_primary, bonding_store_primary);
725 * Show and set the primary_reselect flag.
727 static ssize_t bonding_show_primary_reselect(struct device *d,
728 struct device_attribute *attr,
731 struct bonding *bond = to_bond(d);
732 struct bond_opt_value *val;
734 val = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT,
735 bond->params.primary_reselect);
737 return sprintf(buf, "%s %d\n",
738 val->string, bond->params.primary_reselect);
741 static ssize_t bonding_store_primary_reselect(struct device *d,
742 struct device_attribute *attr,
743 const char *buf, size_t count)
745 struct bonding *bond = to_bond(d);
748 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_PRIMARY_RESELECT,
755 static DEVICE_ATTR(primary_reselect, S_IRUGO | S_IWUSR,
756 bonding_show_primary_reselect,
757 bonding_store_primary_reselect);
760 * Show and set the use_carrier flag.
762 static ssize_t bonding_show_carrier(struct device *d,
763 struct device_attribute *attr,
766 struct bonding *bond = to_bond(d);
768 return sprintf(buf, "%d\n", bond->params.use_carrier);
771 static ssize_t bonding_store_carrier(struct device *d,
772 struct device_attribute *attr,
773 const char *buf, size_t count)
775 struct bonding *bond = to_bond(d);
778 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_USE_CARRIER, (char *)buf);
784 static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR,
785 bonding_show_carrier, bonding_store_carrier);
789 * Show and set currently active_slave.
791 static ssize_t bonding_show_active_slave(struct device *d,
792 struct device_attribute *attr,
795 struct bonding *bond = to_bond(d);
796 struct net_device *slave_dev;
800 slave_dev = bond_option_active_slave_get_rcu(bond);
802 count = sprintf(buf, "%s\n", slave_dev->name);
808 static ssize_t bonding_store_active_slave(struct device *d,
809 struct device_attribute *attr,
810 const char *buf, size_t count)
812 struct bonding *bond = to_bond(d);
815 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_ACTIVE_SLAVE, (char *)buf);
821 static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR,
822 bonding_show_active_slave, bonding_store_active_slave);
826 * Show link status of the bond interface.
828 static ssize_t bonding_show_mii_status(struct device *d,
829 struct device_attribute *attr,
832 struct bonding *bond = to_bond(d);
834 return sprintf(buf, "%s\n", bond->curr_active_slave ? "up" : "down");
836 static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL);
839 * Show current 802.3ad aggregator ID.
841 static ssize_t bonding_show_ad_aggregator(struct device *d,
842 struct device_attribute *attr,
846 struct bonding *bond = to_bond(d);
848 if (bond->params.mode == BOND_MODE_8023AD) {
849 struct ad_info ad_info;
850 count = sprintf(buf, "%d\n",
851 bond_3ad_get_active_agg_info(bond, &ad_info)
852 ? 0 : ad_info.aggregator_id);
857 static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL);
861 * Show number of active 802.3ad ports.
863 static ssize_t bonding_show_ad_num_ports(struct device *d,
864 struct device_attribute *attr,
868 struct bonding *bond = to_bond(d);
870 if (bond->params.mode == BOND_MODE_8023AD) {
871 struct ad_info ad_info;
872 count = sprintf(buf, "%d\n",
873 bond_3ad_get_active_agg_info(bond, &ad_info)
874 ? 0 : ad_info.ports);
879 static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL);
883 * Show current 802.3ad actor key.
885 static ssize_t bonding_show_ad_actor_key(struct device *d,
886 struct device_attribute *attr,
890 struct bonding *bond = to_bond(d);
892 if (bond->params.mode == BOND_MODE_8023AD) {
893 struct ad_info ad_info;
894 count = sprintf(buf, "%d\n",
895 bond_3ad_get_active_agg_info(bond, &ad_info)
896 ? 0 : ad_info.actor_key);
901 static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL);
905 * Show current 802.3ad partner key.
907 static ssize_t bonding_show_ad_partner_key(struct device *d,
908 struct device_attribute *attr,
912 struct bonding *bond = to_bond(d);
914 if (bond->params.mode == BOND_MODE_8023AD) {
915 struct ad_info ad_info;
916 count = sprintf(buf, "%d\n",
917 bond_3ad_get_active_agg_info(bond, &ad_info)
918 ? 0 : ad_info.partner_key);
923 static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL);
927 * Show current 802.3ad partner mac.
929 static ssize_t bonding_show_ad_partner_mac(struct device *d,
930 struct device_attribute *attr,
934 struct bonding *bond = to_bond(d);
936 if (bond->params.mode == BOND_MODE_8023AD) {
937 struct ad_info ad_info;
938 if (!bond_3ad_get_active_agg_info(bond, &ad_info))
939 count = sprintf(buf, "%pM\n", ad_info.partner_system);
944 static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL);
947 * Show the queue_ids of the slaves in the current bond.
949 static ssize_t bonding_show_queue_id(struct device *d,
950 struct device_attribute *attr,
953 struct bonding *bond = to_bond(d);
954 struct list_head *iter;
959 return restart_syscall();
961 bond_for_each_slave(bond, slave, iter) {
962 if (res > (PAGE_SIZE - IFNAMSIZ - 6)) {
963 /* not enough space for another interface_name:queue_id pair */
964 if ((PAGE_SIZE - res) > 10)
965 res = PAGE_SIZE - 10;
966 res += sprintf(buf + res, "++more++ ");
969 res += sprintf(buf + res, "%s:%d ",
970 slave->dev->name, slave->queue_id);
973 buf[res-1] = '\n'; /* eat the leftover space */
981 * Set the queue_ids of the slaves in the current bond. The bond
982 * interface must be enslaved for this to work.
984 static ssize_t bonding_store_queue_id(struct device *d,
985 struct device_attribute *attr,
986 const char *buffer, size_t count)
988 struct slave *slave, *update_slave;
989 struct bonding *bond = to_bond(d);
990 struct list_head *iter;
994 struct net_device *sdev = NULL;
997 return restart_syscall();
999 /* delim will point to queue id if successful */
1000 delim = strchr(buffer, ':');
1005 * Terminate string that points to device name and bump it
1006 * up one, so we can read the queue id there.
1009 if (sscanf(++delim, "%hd\n", &qid) != 1)
1012 /* Check buffer length, valid ifname and queue id */
1013 if (strlen(buffer) > IFNAMSIZ ||
1014 !dev_valid_name(buffer) ||
1015 qid > bond->dev->real_num_tx_queues)
1018 /* Get the pointer to that interface if it exists */
1019 sdev = __dev_get_by_name(dev_net(bond->dev), buffer);
1023 /* Search for thes slave and check for duplicate qids */
1024 update_slave = NULL;
1025 bond_for_each_slave(bond, slave, iter) {
1026 if (sdev == slave->dev)
1028 * We don't need to check the matching
1029 * slave for dups, since we're overwriting it
1031 update_slave = slave;
1032 else if (qid && qid == slave->queue_id) {
1040 /* Actually set the qids for the slave */
1041 update_slave->queue_id = qid;
1048 pr_info("invalid input for queue_id set for %s.\n",
1054 static DEVICE_ATTR(queue_id, S_IRUGO | S_IWUSR, bonding_show_queue_id,
1055 bonding_store_queue_id);
1059 * Show and set the all_slaves_active flag.
1061 static ssize_t bonding_show_slaves_active(struct device *d,
1062 struct device_attribute *attr,
1065 struct bonding *bond = to_bond(d);
1067 return sprintf(buf, "%d\n", bond->params.all_slaves_active);
1070 static ssize_t bonding_store_slaves_active(struct device *d,
1071 struct device_attribute *attr,
1072 const char *buf, size_t count)
1074 struct bonding *bond = to_bond(d);
1077 if (sscanf(buf, "%d", &new_value) != 1) {
1078 pr_err("%s: no all_slaves_active value specified.\n",
1083 if (!rtnl_trylock())
1084 return restart_syscall();
1086 ret = bond_option_all_slaves_active_set(bond, new_value);
1093 static DEVICE_ATTR(all_slaves_active, S_IRUGO | S_IWUSR,
1094 bonding_show_slaves_active, bonding_store_slaves_active);
1097 * Show and set the number of IGMP membership reports to send on link failure
1099 static ssize_t bonding_show_resend_igmp(struct device *d,
1100 struct device_attribute *attr,
1103 struct bonding *bond = to_bond(d);
1105 return sprintf(buf, "%d\n", bond->params.resend_igmp);
1108 static ssize_t bonding_store_resend_igmp(struct device *d,
1109 struct device_attribute *attr,
1110 const char *buf, size_t count)
1112 int new_value, ret = count;
1113 struct bonding *bond = to_bond(d);
1115 if (sscanf(buf, "%d", &new_value) != 1) {
1116 pr_err("%s: no resend_igmp value specified.\n",
1121 if (!rtnl_trylock())
1122 return restart_syscall();
1124 ret = bond_option_resend_igmp_set(bond, new_value);
1132 static DEVICE_ATTR(resend_igmp, S_IRUGO | S_IWUSR,
1133 bonding_show_resend_igmp, bonding_store_resend_igmp);
1136 static ssize_t bonding_show_lp_interval(struct device *d,
1137 struct device_attribute *attr,
1140 struct bonding *bond = to_bond(d);
1141 return sprintf(buf, "%d\n", bond->params.lp_interval);
1144 static ssize_t bonding_store_lp_interval(struct device *d,
1145 struct device_attribute *attr,
1146 const char *buf, size_t count)
1148 struct bonding *bond = to_bond(d);
1151 if (sscanf(buf, "%d", &new_value) != 1) {
1152 pr_err("%s: no lp interval value specified.\n",
1157 if (!rtnl_trylock())
1158 return restart_syscall();
1160 ret = bond_option_lp_interval_set(bond, new_value);
1168 static DEVICE_ATTR(lp_interval, S_IRUGO | S_IWUSR,
1169 bonding_show_lp_interval, bonding_store_lp_interval);
1171 static ssize_t bonding_show_packets_per_slave(struct device *d,
1172 struct device_attribute *attr,
1175 struct bonding *bond = to_bond(d);
1176 unsigned int packets_per_slave = bond->params.packets_per_slave;
1177 return sprintf(buf, "%u\n", packets_per_slave);
1180 static ssize_t bonding_store_packets_per_slave(struct device *d,
1181 struct device_attribute *attr,
1182 const char *buf, size_t count)
1184 struct bonding *bond = to_bond(d);
1187 ret = bond_opt_tryset_rtnl(bond, BOND_OPT_PACKETS_PER_SLAVE,
1195 static DEVICE_ATTR(packets_per_slave, S_IRUGO | S_IWUSR,
1196 bonding_show_packets_per_slave,
1197 bonding_store_packets_per_slave);
1199 static struct attribute *per_bond_attrs[] = {
1200 &dev_attr_slaves.attr,
1201 &dev_attr_mode.attr,
1202 &dev_attr_fail_over_mac.attr,
1203 &dev_attr_arp_validate.attr,
1204 &dev_attr_arp_all_targets.attr,
1205 &dev_attr_arp_interval.attr,
1206 &dev_attr_arp_ip_target.attr,
1207 &dev_attr_downdelay.attr,
1208 &dev_attr_updelay.attr,
1209 &dev_attr_lacp_rate.attr,
1210 &dev_attr_ad_select.attr,
1211 &dev_attr_xmit_hash_policy.attr,
1212 &dev_attr_num_grat_arp.attr,
1213 &dev_attr_num_unsol_na.attr,
1214 &dev_attr_miimon.attr,
1215 &dev_attr_primary.attr,
1216 &dev_attr_primary_reselect.attr,
1217 &dev_attr_use_carrier.attr,
1218 &dev_attr_active_slave.attr,
1219 &dev_attr_mii_status.attr,
1220 &dev_attr_ad_aggregator.attr,
1221 &dev_attr_ad_num_ports.attr,
1222 &dev_attr_ad_actor_key.attr,
1223 &dev_attr_ad_partner_key.attr,
1224 &dev_attr_ad_partner_mac.attr,
1225 &dev_attr_queue_id.attr,
1226 &dev_attr_all_slaves_active.attr,
1227 &dev_attr_resend_igmp.attr,
1228 &dev_attr_min_links.attr,
1229 &dev_attr_lp_interval.attr,
1230 &dev_attr_packets_per_slave.attr,
1234 static struct attribute_group bonding_group = {
1236 .attrs = per_bond_attrs,
1240 * Initialize sysfs. This sets up the bonding_masters file in
1243 int bond_create_sysfs(struct bond_net *bn)
1247 bn->class_attr_bonding_masters = class_attr_bonding_masters;
1248 sysfs_attr_init(&bn->class_attr_bonding_masters.attr);
1250 ret = netdev_class_create_file_ns(&bn->class_attr_bonding_masters,
1253 * Permit multiple loads of the module by ignoring failures to
1254 * create the bonding_masters sysfs file. Bonding devices
1255 * created by second or subsequent loads of the module will
1256 * not be listed in, or controllable by, bonding_masters, but
1257 * will have the usual "bonding" sysfs directory.
1259 * This is done to preserve backwards compatibility for
1260 * initscripts/sysconfig, which load bonding multiple times to
1261 * configure multiple bonding devices.
1263 if (ret == -EEXIST) {
1264 /* Is someone being kinky and naming a device bonding_master? */
1265 if (__dev_get_by_name(bn->net,
1266 class_attr_bonding_masters.attr.name))
1267 pr_err("network device named %s already exists in sysfs",
1268 class_attr_bonding_masters.attr.name);
1277 * Remove /sys/class/net/bonding_masters.
1279 void bond_destroy_sysfs(struct bond_net *bn)
1281 netdev_class_remove_file_ns(&bn->class_attr_bonding_masters, bn->net);
1285 * Initialize sysfs for each bond. This sets up and registers
1286 * the 'bondctl' directory for each individual bond under /sys/class/net.
1288 void bond_prepare_sysfs_group(struct bonding *bond)
1290 bond->dev->sysfs_groups[0] = &bonding_group;