blob: 8762a27a2a185dd37d47db0263fcc019f471b1da [file] [log] [blame]
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001/*
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, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
Mitch Williamsb76cdba2005-11-09 10:36:41 -080021 */
Mitch Williamsb76cdba2005-11-09 10:36:41 -080022#include <linux/kernel.h>
23#include <linux/module.h>
Mitch Williamsb76cdba2005-11-09 10:36:41 -080024#include <linux/device.h>
Alexey Dobriyand43c36d2009-10-07 17:09:06 +040025#include <linux/sched.h>
Mitch Williamsb76cdba2005-11-09 10:36:41 -080026#include <linux/sysdev.h>
27#include <linux/fs.h>
28#include <linux/types.h>
29#include <linux/string.h>
30#include <linux/netdevice.h>
31#include <linux/inetdevice.h>
32#include <linux/in.h>
33#include <linux/sysfs.h>
Mitch Williamsb76cdba2005-11-09 10:36:41 -080034#include <linux/ctype.h>
35#include <linux/inet.h>
36#include <linux/rtnetlink.h>
Stephen Hemminger5c5129b2009-06-12 19:02:51 +000037#include <linux/etherdevice.h>
Eric W. Biederman881d9662007-09-17 11:56:21 -070038#include <net/net_namespace.h>
Mitch Williamsb76cdba2005-11-09 10:36:41 -080039
Mitch Williamsb76cdba2005-11-09 10:36:41 -080040#include "bonding.h"
Holger Eitzenberger5a03cdb2008-12-09 23:09:22 -080041
Stephen Hemminger3d632c32009-06-12 19:02:48 +000042#define to_dev(obj) container_of(obj, struct device, kobj)
Wang Chen454d7c92008-11-12 23:37:49 -080043#define to_bond(cd) ((struct bonding *)(netdev_priv(to_net_dev(cd))))
Mitch Williamsb76cdba2005-11-09 10:36:41 -080044
Mitch Williamsb76cdba2005-11-09 10:36:41 -080045/*
46 * "show" function for the bond_masters attribute.
47 * The class parameter is ignored.
48 */
Wagner Ferencb8843662007-12-06 23:40:30 -080049static ssize_t bonding_show_bonds(struct class *cls, char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -080050{
51 int res = 0;
52 struct bonding *bond;
53
Stephen Hemminger7e083842009-06-12 19:02:46 +000054 rtnl_lock();
Mitch Williamsb76cdba2005-11-09 10:36:41 -080055
56 list_for_each_entry(bond, &bond_dev_list, bond_list) {
57 if (res > (PAGE_SIZE - IFNAMSIZ)) {
58 /* not enough space for another interface name */
59 if ((PAGE_SIZE - res) > 10)
60 res = PAGE_SIZE - 10;
Wagner Ferencb8843662007-12-06 23:40:30 -080061 res += sprintf(buf + res, "++more++ ");
Mitch Williamsb76cdba2005-11-09 10:36:41 -080062 break;
63 }
Wagner Ferencb8843662007-12-06 23:40:30 -080064 res += sprintf(buf + res, "%s ", bond->dev->name);
Mitch Williamsb76cdba2005-11-09 10:36:41 -080065 }
Wagner Ferenc1dcdcd62007-12-06 23:40:31 -080066 if (res)
67 buf[res-1] = '\n'; /* eat the leftover space */
Stephen Hemminger7e083842009-06-12 19:02:46 +000068
69 rtnl_unlock();
Mitch Williamsb76cdba2005-11-09 10:36:41 -080070 return res;
71}
72
Stephen Hemminger373500d2009-06-12 19:02:50 +000073static struct net_device *bond_get_by_name(const char *ifname)
74{
75 struct bonding *bond;
76
77 list_for_each_entry(bond, &bond_dev_list, bond_list) {
78 if (strncmp(bond->dev->name, ifname, IFNAMSIZ) == 0)
79 return bond->dev;
80 }
81 return NULL;
82}
83
Mitch Williamsb76cdba2005-11-09 10:36:41 -080084/*
85 * "store" function for the bond_masters attribute. This is what
86 * creates and deletes entire bonds.
87 *
88 * The class parameter is ignored.
89 *
90 */
91
Stephen Hemminger3d632c32009-06-12 19:02:48 +000092static ssize_t bonding_store_bonds(struct class *cls,
93 const char *buffer, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -080094{
95 char command[IFNAMSIZ + 1] = {0, };
96 char *ifname;
Jay Vosburgh027ea042008-01-17 16:25:02 -080097 int rv, res = count;
Mitch Williamsb76cdba2005-11-09 10:36:41 -080098
Mitch Williamsb76cdba2005-11-09 10:36:41 -080099 sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
100 ifname = command + 1;
101 if ((strlen(command) <= 1) ||
102 !dev_valid_name(ifname))
103 goto err_no_cmd;
104
105 if (command[0] == '+') {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000106 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800107 ": %s is being created...\n", ifname);
Stephen Hemmingerd2991f72009-06-12 19:02:44 +0000108 rv = bond_create(ifname);
Jay Vosburgh027ea042008-01-17 16:25:02 -0800109 if (rv) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000110 pr_info(DRV_NAME ": Bond creation failed.\n");
Jay Vosburgh027ea042008-01-17 16:25:02 -0800111 res = rv;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800112 }
Stephen Hemminger373500d2009-06-12 19:02:50 +0000113 } else if (command[0] == '-') {
114 struct net_device *bond_dev;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800115
Jay Vosburgh027ea042008-01-17 16:25:02 -0800116 rtnl_lock();
Stephen Hemminger373500d2009-06-12 19:02:50 +0000117 bond_dev = bond_get_by_name(ifname);
118 if (bond_dev) {
119 pr_info(DRV_NAME ": %s is being deleted...\n",
120 ifname);
121 unregister_netdevice(bond_dev);
122 } else {
123 pr_err(DRV_NAME ": unable to delete non-existent %s\n",
124 ifname);
125 res = -ENODEV;
126 }
127 rtnl_unlock();
128 } else
129 goto err_no_cmd;
Jay Vosburgh027ea042008-01-17 16:25:02 -0800130
Stephen Hemminger373500d2009-06-12 19:02:50 +0000131 /* Always return either count or an error. If you return 0, you'll
132 * get called forever, which is bad.
133 */
134 return res;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800135
136err_no_cmd:
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000137 pr_err(DRV_NAME ": no command found in bonding_masters."
138 " Use +ifname or -ifname.\n");
Jay Vosburghc4ebc662008-05-02 17:49:38 -0700139 return -EPERM;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800140}
Stephen Hemminger373500d2009-06-12 19:02:50 +0000141
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800142/* class attribute for bond_masters file. This ends up in /sys/class/net */
143static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO,
144 bonding_show_bonds, bonding_store_bonds);
145
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000146int bond_create_slave_symlinks(struct net_device *master,
147 struct net_device *slave)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800148{
149 char linkname[IFNAMSIZ+7];
150 int ret = 0;
151
152 /* first, create a link from the slave back to the master */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700153 ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj),
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800154 "master");
155 if (ret)
156 return ret;
157 /* next, create a link from the master to the slave */
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000158 sprintf(linkname, "slave_%s", slave->name);
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700159 ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj),
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800160 linkname);
161 return ret;
162
163}
164
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000165void bond_destroy_slave_symlinks(struct net_device *master,
166 struct net_device *slave)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800167{
168 char linkname[IFNAMSIZ+7];
169
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700170 sysfs_remove_link(&(slave->dev.kobj), "master");
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000171 sprintf(linkname, "slave_%s", slave->name);
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700172 sysfs_remove_link(&(master->dev.kobj), linkname);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800173}
174
175
176/*
177 * Show the slaves in the current bond.
178 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700179static ssize_t bonding_show_slaves(struct device *d,
180 struct device_attribute *attr, char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800181{
182 struct slave *slave;
183 int i, res = 0;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700184 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800185
Jay Vosburgh6603a6f2007-10-17 17:37:50 -0700186 read_lock(&bond->lock);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800187 bond_for_each_slave(bond, slave, i) {
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;
Wagner Ferenc7bd46502007-12-06 23:40:28 -0800192 res += sprintf(buf + res, "++more++ ");
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800193 break;
194 }
195 res += sprintf(buf + res, "%s ", slave->dev->name);
196 }
Jay Vosburgh6603a6f2007-10-17 17:37:50 -0700197 read_unlock(&bond->lock);
Wagner Ferenc1dcdcd62007-12-06 23:40:31 -0800198 if (res)
199 buf[res-1] = '\n'; /* eat the leftover space */
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800200 return res;
201}
202
203/*
204 * Set the slaves in the current bond. The bond interface must be
205 * up for this to succeed.
206 * This function is largely the same flow as bonding_update_bonds().
207 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700208static ssize_t bonding_store_slaves(struct device *d,
209 struct device_attribute *attr,
210 const char *buffer, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800211{
212 char command[IFNAMSIZ + 1] = { 0, };
213 char *ifname;
214 int i, res, found, ret = count;
Moni Shoua3158bf72007-10-09 19:43:41 -0700215 u32 original_mtu;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800216 struct slave *slave;
Luiz Fernando Capitulino3418db72006-02-01 00:54:34 -0800217 struct net_device *dev = NULL;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700218 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800219
220 /* Quick sanity check -- is the bond interface up? */
221 if (!(bond->dev->flags & IFF_UP)) {
Jiri Pirkoe5e2a8f2009-08-13 04:11:52 +0000222 pr_warning(DRV_NAME ": %s: doing slave updates when "
223 "interface is down.\n", bond->dev->name);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800224 }
225
226 /* Note: We can't hold bond->lock here, as bond_create grabs it. */
227
Eric W. Biederman496a60c2009-05-13 17:02:50 +0000228 if (!rtnl_trylock())
229 return restart_syscall();
Jay Vosburgh027ea042008-01-17 16:25:02 -0800230
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800231 sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
232 ifname = command + 1;
233 if ((strlen(command) <= 1) ||
234 !dev_valid_name(ifname))
235 goto err_no_cmd;
236
237 if (command[0] == '+') {
238
239 /* Got a slave name in ifname. Is it already in the list? */
240 found = 0;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800241
Stephen Hemminger373500d2009-06-12 19:02:50 +0000242 /* FIXME: get netns from sysfs object */
243 dev = __dev_get_by_name(&init_net, ifname);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800244 if (!dev) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000245 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800246 ": %s: Interface %s does not exist!\n",
247 bond->dev->name, ifname);
Stephen Hemminger373500d2009-06-12 19:02:50 +0000248 ret = -ENODEV;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800249 goto out;
Stephen Hemminger373500d2009-06-12 19:02:50 +0000250 }
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800251
252 if (dev->flags & IFF_UP) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000253 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800254 ": %s: Error: Unable to enslave %s "
255 "because it is already up.\n",
256 bond->dev->name, dev->name);
257 ret = -EPERM;
258 goto out;
259 }
Stephen Hemminger373500d2009-06-12 19:02:50 +0000260
261 read_lock(&bond->lock);
262 bond_for_each_slave(bond, slave, i)
263 if (slave->dev == dev) {
264 pr_err(DRV_NAME
265 ": %s: Interface %s is already enslaved!\n",
266 bond->dev->name, ifname);
267 ret = -EPERM;
268 read_unlock(&bond->lock);
269 goto out;
270 }
271 read_unlock(&bond->lock);
272
273 pr_info(DRV_NAME ": %s: Adding slave %s.\n",
274 bond->dev->name, ifname);
275
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800276 /* If this is the first slave, then we need to set
277 the master's hardware address to be the same as the
278 slave's. */
Stephen Hemminger5c5129b2009-06-12 19:02:51 +0000279 if (is_zero_ether_addr(bond->dev->dev_addr))
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800280 memcpy(bond->dev->dev_addr, dev->dev_addr,
281 dev->addr_len);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800282
283 /* Set the slave's MTU to match the bond */
Moni Shoua3158bf72007-10-09 19:43:41 -0700284 original_mtu = dev->mtu;
Stephen Hemmingereb7cc592008-11-19 21:56:05 -0800285 res = dev_set_mtu(dev, bond->dev->mtu);
286 if (res) {
287 ret = res;
288 goto out;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800289 }
Stephen Hemmingereb7cc592008-11-19 21:56:05 -0800290
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800291 res = bond_enslave(bond->dev, dev);
Moni Shoua3158bf72007-10-09 19:43:41 -0700292 bond_for_each_slave(bond, slave, i)
293 if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0)
294 slave->original_mtu = original_mtu;
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000295 if (res)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800296 ret = res;
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000297
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800298 goto out;
299 }
300
301 if (command[0] == '-') {
302 dev = NULL;
David S. Miller6952d892008-03-28 16:15:38 -0700303 original_mtu = 0;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800304 bond_for_each_slave(bond, slave, i)
305 if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
306 dev = slave->dev;
Moni Shoua3158bf72007-10-09 19:43:41 -0700307 original_mtu = slave->original_mtu;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800308 break;
309 }
310 if (dev) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000311 pr_info(DRV_NAME ": %s: Removing slave %s\n",
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800312 bond->dev->name, dev->name);
Moni Shouad90a1622007-10-09 19:43:43 -0700313 res = bond_release(bond->dev, dev);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800314 if (res) {
315 ret = res;
316 goto out;
317 }
318 /* set the slave MTU to the default */
Stephen Hemmingereb7cc592008-11-19 21:56:05 -0800319 dev_set_mtu(dev, original_mtu);
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000320 } else {
321 pr_err(DRV_NAME ": unable to remove non-existent"
322 " slave %s for bond %s.\n",
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800323 ifname, bond->dev->name);
324 ret = -ENODEV;
325 }
326 goto out;
327 }
328
329err_no_cmd:
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000330 pr_err(DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800331 ret = -EPERM;
332
333out:
Jay Vosburgh027ea042008-01-17 16:25:02 -0800334 rtnl_unlock();
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800335 return ret;
336}
337
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000338static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves,
339 bonding_store_slaves);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800340
341/*
342 * Show and set the bonding mode. The bond interface must be down to
343 * change the mode.
344 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700345static ssize_t bonding_show_mode(struct device *d,
346 struct device_attribute *attr, char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800347{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700348 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800349
350 return sprintf(buf, "%s %d\n",
351 bond_mode_tbl[bond->params.mode].modename,
Wagner Ferenc7bd46502007-12-06 23:40:28 -0800352 bond->params.mode);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800353}
354
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700355static ssize_t bonding_store_mode(struct device *d,
356 struct device_attribute *attr,
357 const char *buf, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800358{
359 int new_value, ret = count;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700360 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800361
362 if (bond->dev->flags & IFF_UP) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000363 pr_err(DRV_NAME ": unable to update mode of %s"
364 " because interface is up.\n", bond->dev->name);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800365 ret = -EPERM;
366 goto out;
367 }
368
Jay Vosburghece95f72008-01-17 16:25:01 -0800369 new_value = bond_parse_parm(buf, bond_mode_tbl);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800370 if (new_value < 0) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000371 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800372 ": %s: Ignoring invalid mode value %.*s.\n",
373 bond->dev->name,
374 (int)strlen(buf) - 1, buf);
375 ret = -EINVAL;
376 goto out;
377 } else {
Jay Vosburgh8f903c72006-02-21 16:36:44 -0800378 if (bond->params.mode == BOND_MODE_8023AD)
379 bond_unset_master_3ad_flags(bond);
380
381 if (bond->params.mode == BOND_MODE_ALB)
382 bond_unset_master_alb_flags(bond);
383
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800384 bond->params.mode = new_value;
385 bond_set_mode_ops(bond, bond->params.mode);
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000386 pr_info(DRV_NAME ": %s: setting mode to %s (%d).\n",
387 bond->dev->name, bond_mode_tbl[new_value].modename,
388 new_value);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800389 }
390out:
391 return ret;
392}
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000393static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
394 bonding_show_mode, bonding_store_mode);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800395
396/*
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000397 * Show and set the bonding transmit hash method.
398 * The bond interface must be down to change the xmit hash policy.
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800399 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700400static ssize_t bonding_show_xmit_hash(struct device *d,
401 struct device_attribute *attr,
402 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800403{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700404 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800405
Wagner Ferenc8e4b9322007-12-06 23:40:32 -0800406 return sprintf(buf, "%s %d\n",
407 xmit_hashtype_tbl[bond->params.xmit_policy].modename,
408 bond->params.xmit_policy);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800409}
410
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700411static ssize_t bonding_store_xmit_hash(struct device *d,
412 struct device_attribute *attr,
413 const char *buf, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800414{
415 int new_value, ret = count;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700416 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800417
418 if (bond->dev->flags & IFF_UP) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000419 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800420 "%s: Interface is up. Unable to update xmit policy.\n",
421 bond->dev->name);
422 ret = -EPERM;
423 goto out;
424 }
425
Jay Vosburghece95f72008-01-17 16:25:01 -0800426 new_value = bond_parse_parm(buf, xmit_hashtype_tbl);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800427 if (new_value < 0) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000428 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800429 ": %s: Ignoring invalid xmit hash policy value %.*s.\n",
430 bond->dev->name,
431 (int)strlen(buf) - 1, buf);
432 ret = -EINVAL;
433 goto out;
434 } else {
435 bond->params.xmit_policy = new_value;
436 bond_set_mode_ops(bond, bond->params.mode);
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000437 pr_info(DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n",
438 bond->dev->name,
439 xmit_hashtype_tbl[new_value].modename, new_value);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800440 }
441out:
442 return ret;
443}
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000444static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR,
445 bonding_show_xmit_hash, bonding_store_xmit_hash);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800446
447/*
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700448 * Show and set arp_validate.
449 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700450static ssize_t bonding_show_arp_validate(struct device *d,
451 struct device_attribute *attr,
452 char *buf)
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700453{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700454 struct bonding *bond = to_bond(d);
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700455
456 return sprintf(buf, "%s %d\n",
457 arp_validate_tbl[bond->params.arp_validate].modename,
Wagner Ferenc7bd46502007-12-06 23:40:28 -0800458 bond->params.arp_validate);
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700459}
460
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700461static ssize_t bonding_store_arp_validate(struct device *d,
462 struct device_attribute *attr,
463 const char *buf, size_t count)
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700464{
465 int new_value;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700466 struct bonding *bond = to_bond(d);
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700467
Jay Vosburghece95f72008-01-17 16:25:01 -0800468 new_value = bond_parse_parm(buf, arp_validate_tbl);
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700469 if (new_value < 0) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000470 pr_err(DRV_NAME
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700471 ": %s: Ignoring invalid arp_validate value %s\n",
472 bond->dev->name, buf);
473 return -EINVAL;
474 }
475 if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000476 pr_err(DRV_NAME
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700477 ": %s: arp_validate only supported in active-backup mode.\n",
478 bond->dev->name);
479 return -EINVAL;
480 }
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000481 pr_info(DRV_NAME ": %s: setting arp_validate to %s (%d).\n",
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700482 bond->dev->name, arp_validate_tbl[new_value].modename,
483 new_value);
484
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000485 if (!bond->params.arp_validate && new_value)
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700486 bond_register_arp(bond);
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000487 else if (bond->params.arp_validate && !new_value)
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700488 bond_unregister_arp(bond);
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700489
490 bond->params.arp_validate = new_value;
491
492 return count;
493}
494
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000495static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate,
496 bonding_store_arp_validate);
Jay Vosburghf5b2b962006-09-22 21:54:53 -0700497
498/*
Jay Vosburghdd957c52007-10-09 19:57:24 -0700499 * Show and store fail_over_mac. User only allowed to change the
500 * value when there are no slaves.
501 */
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000502static ssize_t bonding_show_fail_over_mac(struct device *d,
503 struct device_attribute *attr,
504 char *buf)
Jay Vosburghdd957c52007-10-09 19:57:24 -0700505{
506 struct bonding *bond = to_bond(d);
507
Jay Vosburgh3915c1e2008-05-17 21:10:14 -0700508 return sprintf(buf, "%s %d\n",
509 fail_over_mac_tbl[bond->params.fail_over_mac].modename,
510 bond->params.fail_over_mac);
Jay Vosburghdd957c52007-10-09 19:57:24 -0700511}
512
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000513static ssize_t bonding_store_fail_over_mac(struct device *d,
514 struct device_attribute *attr,
515 const char *buf, size_t count)
Jay Vosburghdd957c52007-10-09 19:57:24 -0700516{
517 int new_value;
Jay Vosburghdd957c52007-10-09 19:57:24 -0700518 struct bonding *bond = to_bond(d);
519
520 if (bond->slave_cnt != 0) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000521 pr_err(DRV_NAME
Jay Vosburghdd957c52007-10-09 19:57:24 -0700522 ": %s: Can't alter fail_over_mac with slaves in bond.\n",
523 bond->dev->name);
Jay Vosburgh3915c1e2008-05-17 21:10:14 -0700524 return -EPERM;
Jay Vosburghdd957c52007-10-09 19:57:24 -0700525 }
526
Jay Vosburgh3915c1e2008-05-17 21:10:14 -0700527 new_value = bond_parse_parm(buf, fail_over_mac_tbl);
528 if (new_value < 0) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000529 pr_err(DRV_NAME
Jay Vosburgh3915c1e2008-05-17 21:10:14 -0700530 ": %s: Ignoring invalid fail_over_mac value %s.\n",
531 bond->dev->name, buf);
532 return -EINVAL;
Jay Vosburghdd957c52007-10-09 19:57:24 -0700533 }
534
Jay Vosburgh3915c1e2008-05-17 21:10:14 -0700535 bond->params.fail_over_mac = new_value;
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000536 pr_info(DRV_NAME ": %s: Setting fail_over_mac to %s (%d).\n",
Jay Vosburgh3915c1e2008-05-17 21:10:14 -0700537 bond->dev->name, fail_over_mac_tbl[new_value].modename,
538 new_value);
539
540 return count;
Jay Vosburghdd957c52007-10-09 19:57:24 -0700541}
542
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000543static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR,
544 bonding_show_fail_over_mac, bonding_store_fail_over_mac);
Jay Vosburghdd957c52007-10-09 19:57:24 -0700545
546/*
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800547 * Show and set the arp timer interval. There are two tricky bits
548 * here. First, if ARP monitoring is activated, then we must disable
549 * MII monitoring. Second, if the ARP timer isn't running, we must
550 * start it.
551 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700552static ssize_t bonding_show_arp_interval(struct device *d,
553 struct device_attribute *attr,
554 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800555{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700556 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800557
Wagner Ferenc7bd46502007-12-06 23:40:28 -0800558 return sprintf(buf, "%d\n", bond->params.arp_interval);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800559}
560
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700561static ssize_t bonding_store_arp_interval(struct device *d,
562 struct device_attribute *attr,
563 const char *buf, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800564{
565 int new_value, ret = count;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700566 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800567
568 if (sscanf(buf, "%d", &new_value) != 1) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000569 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800570 ": %s: no arp_interval value specified.\n",
571 bond->dev->name);
572 ret = -EINVAL;
573 goto out;
574 }
575 if (new_value < 0) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000576 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800577 ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n",
578 bond->dev->name, new_value, INT_MAX);
579 ret = -EINVAL;
580 goto out;
581 }
582
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000583 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800584 ": %s: Setting ARP monitoring interval to %d.\n",
585 bond->dev->name, new_value);
586 bond->params.arp_interval = new_value;
Jay Vosburgh6cf3f412008-11-03 18:16:50 -0800587 if (bond->params.arp_interval)
588 bond->dev->priv_flags |= IFF_MASTER_ARPMON;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800589 if (bond->params.miimon) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000590 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800591 ": %s: ARP monitoring cannot be used with MII monitoring. "
592 "%s Disabling MII monitoring.\n",
593 bond->dev->name, bond->dev->name);
594 bond->params.miimon = 0;
Jay Vosburgh1b76b312007-10-17 17:37:45 -0700595 if (delayed_work_pending(&bond->mii_work)) {
596 cancel_delayed_work(&bond->mii_work);
597 flush_workqueue(bond->wq);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800598 }
599 }
600 if (!bond->params.arp_targets[0]) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000601 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800602 ": %s: ARP monitoring has been set up, "
603 "but no ARP targets have been specified.\n",
604 bond->dev->name);
605 }
606 if (bond->dev->flags & IFF_UP) {
607 /* If the interface is up, we may need to fire off
608 * the ARP timer. If the interface is down, the
609 * timer will get fired off when the open function
610 * is called.
611 */
Jay Vosburgh1b76b312007-10-17 17:37:45 -0700612 if (!delayed_work_pending(&bond->arp_work)) {
613 if (bond->params.mode == BOND_MODE_ACTIVEBACKUP)
614 INIT_DELAYED_WORK(&bond->arp_work,
615 bond_activebackup_arp_mon);
616 else
617 INIT_DELAYED_WORK(&bond->arp_work,
618 bond_loadbalance_arp_mon);
619
620 queue_delayed_work(bond->wq, &bond->arp_work, 0);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800621 }
622 }
623
624out:
625 return ret;
626}
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000627static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR,
628 bonding_show_arp_interval, bonding_store_arp_interval);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800629
630/*
631 * Show and set the arp targets.
632 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700633static ssize_t bonding_show_arp_targets(struct device *d,
634 struct device_attribute *attr,
635 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800636{
637 int i, res = 0;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700638 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800639
640 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
641 if (bond->params.arp_targets[i])
Harvey Harrison63779432008-10-31 00:56:00 -0700642 res += sprintf(buf + res, "%pI4 ",
643 &bond->params.arp_targets[i]);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800644 }
Wagner Ferenc1dcdcd62007-12-06 23:40:31 -0800645 if (res)
646 buf[res-1] = '\n'; /* eat the leftover space */
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800647 return res;
648}
649
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700650static ssize_t bonding_store_arp_targets(struct device *d,
651 struct device_attribute *attr,
652 const char *buf, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800653{
Al Virod3bb52b2007-08-22 20:06:58 -0400654 __be32 newtarget;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800655 int i = 0, done = 0, ret = count;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700656 struct bonding *bond = to_bond(d);
Al Virod3bb52b2007-08-22 20:06:58 -0400657 __be32 *targets;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800658
659 targets = bond->params.arp_targets;
660 newtarget = in_aton(buf + 1);
661 /* look for adds */
662 if (buf[0] == '+') {
Al Virod3bb52b2007-08-22 20:06:58 -0400663 if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000664 pr_err(DRV_NAME
Harvey Harrison63779432008-10-31 00:56:00 -0700665 ": %s: invalid ARP target %pI4 specified for addition\n",
666 bond->dev->name, &newtarget);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800667 ret = -EINVAL;
668 goto out;
669 }
670 /* look for an empty slot to put the target in, and check for dupes */
Brian Haley5a31bec2009-04-13 00:11:30 -0700671 for (i = 0; (i < BOND_MAX_ARP_TARGETS) && !done; i++) {
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800672 if (targets[i] == newtarget) { /* duplicate */
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000673 pr_err(DRV_NAME
Harvey Harrison63779432008-10-31 00:56:00 -0700674 ": %s: ARP target %pI4 is already present\n",
675 bond->dev->name, &newtarget);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800676 ret = -EINVAL;
677 goto out;
678 }
Brian Haley5a31bec2009-04-13 00:11:30 -0700679 if (targets[i] == 0) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000680 pr_info(DRV_NAME
Harvey Harrison63779432008-10-31 00:56:00 -0700681 ": %s: adding ARP target %pI4.\n",
682 bond->dev->name, &newtarget);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800683 done = 1;
684 targets[i] = newtarget;
685 }
686 }
687 if (!done) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000688 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800689 ": %s: ARP target table is full!\n",
690 bond->dev->name);
691 ret = -EINVAL;
692 goto out;
693 }
694
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000695 } else if (buf[0] == '-') {
Al Virod3bb52b2007-08-22 20:06:58 -0400696 if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000697 pr_err(DRV_NAME
Harvey Harrison63779432008-10-31 00:56:00 -0700698 ": %s: invalid ARP target %pI4 specified for removal\n",
699 bond->dev->name, &newtarget);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800700 ret = -EINVAL;
701 goto out;
702 }
703
Brian Haley5a31bec2009-04-13 00:11:30 -0700704 for (i = 0; (i < BOND_MAX_ARP_TARGETS) && !done; i++) {
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800705 if (targets[i] == newtarget) {
Brian Haley5a31bec2009-04-13 00:11:30 -0700706 int j;
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000707 pr_info(DRV_NAME
Harvey Harrison63779432008-10-31 00:56:00 -0700708 ": %s: removing ARP target %pI4.\n",
709 bond->dev->name, &newtarget);
Brian Haley5a31bec2009-04-13 00:11:30 -0700710 for (j = i; (j < (BOND_MAX_ARP_TARGETS-1)) && targets[j+1]; j++)
711 targets[j] = targets[j+1];
712
713 targets[j] = 0;
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800714 done = 1;
715 }
716 }
717 if (!done) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000718 pr_info(DRV_NAME
Harvey Harrison63779432008-10-31 00:56:00 -0700719 ": %s: unable to remove nonexistent ARP target %pI4.\n",
720 bond->dev->name, &newtarget);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800721 ret = -EINVAL;
722 goto out;
723 }
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000724 } else {
725 pr_err(DRV_NAME ": no command found in arp_ip_targets file"
726 " for bond %s. Use +<addr> or -<addr>.\n",
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800727 bond->dev->name);
728 ret = -EPERM;
729 goto out;
730 }
731
732out:
733 return ret;
734}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700735static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800736
737/*
738 * Show and set the up and down delays. These must be multiples of the
739 * MII monitoring value, and are stored internally as the multiplier.
740 * Thus, we must translate to MS for the real world.
741 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700742static ssize_t bonding_show_downdelay(struct device *d,
743 struct device_attribute *attr,
744 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800745{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700746 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800747
Wagner Ferenc7bd46502007-12-06 23:40:28 -0800748 return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800749}
750
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700751static ssize_t bonding_store_downdelay(struct device *d,
752 struct device_attribute *attr,
753 const char *buf, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800754{
755 int new_value, ret = count;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700756 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800757
758 if (!(bond->params.miimon)) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000759 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800760 ": %s: Unable to set down delay as MII monitoring is disabled\n",
761 bond->dev->name);
762 ret = -EPERM;
763 goto out;
764 }
765
766 if (sscanf(buf, "%d", &new_value) != 1) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000767 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800768 ": %s: no down delay value specified.\n",
769 bond->dev->name);
770 ret = -EINVAL;
771 goto out;
772 }
773 if (new_value < 0) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000774 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800775 ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n",
776 bond->dev->name, new_value, 1, INT_MAX);
777 ret = -EINVAL;
778 goto out;
779 } else {
780 if ((new_value % bond->params.miimon) != 0) {
Jiri Pirkoe5e2a8f2009-08-13 04:11:52 +0000781 pr_warning(DRV_NAME
782 ": %s: Warning: down delay (%d) is not a "
783 "multiple of miimon (%d), delay rounded "
784 "to %d ms\n",
785 bond->dev->name, new_value,
786 bond->params.miimon,
787 (new_value / bond->params.miimon) *
788 bond->params.miimon);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800789 }
790 bond->params.downdelay = new_value / bond->params.miimon;
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000791 pr_info(DRV_NAME ": %s: Setting down delay to %d.\n",
792 bond->dev->name,
793 bond->params.downdelay * bond->params.miimon);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800794
795 }
796
797out:
798 return ret;
799}
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000800static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR,
801 bonding_show_downdelay, bonding_store_downdelay);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800802
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700803static ssize_t bonding_show_updelay(struct device *d,
804 struct device_attribute *attr,
805 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800806{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700807 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800808
Wagner Ferenc7bd46502007-12-06 23:40:28 -0800809 return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800810
811}
812
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700813static ssize_t bonding_store_updelay(struct device *d,
814 struct device_attribute *attr,
815 const char *buf, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800816{
817 int new_value, ret = count;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700818 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800819
820 if (!(bond->params.miimon)) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000821 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800822 ": %s: Unable to set up delay as MII monitoring is disabled\n",
823 bond->dev->name);
824 ret = -EPERM;
825 goto out;
826 }
827
828 if (sscanf(buf, "%d", &new_value) != 1) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000829 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800830 ": %s: no up delay value specified.\n",
831 bond->dev->name);
832 ret = -EINVAL;
833 goto out;
834 }
835 if (new_value < 0) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000836 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800837 ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n",
838 bond->dev->name, new_value, 1, INT_MAX);
839 ret = -EINVAL;
840 goto out;
841 } else {
842 if ((new_value % bond->params.miimon) != 0) {
Jiri Pirkoe5e2a8f2009-08-13 04:11:52 +0000843 pr_warning(DRV_NAME
844 ": %s: Warning: up delay (%d) is not a "
845 "multiple of miimon (%d), updelay rounded "
846 "to %d ms\n",
847 bond->dev->name, new_value,
848 bond->params.miimon,
849 (new_value / bond->params.miimon) *
850 bond->params.miimon);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800851 }
852 bond->params.updelay = new_value / bond->params.miimon;
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000853 pr_info(DRV_NAME ": %s: Setting up delay to %d.\n",
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800854 bond->dev->name, bond->params.updelay * bond->params.miimon);
855
856 }
857
858out:
859 return ret;
860}
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000861static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR,
862 bonding_show_updelay, bonding_store_updelay);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800863
864/*
865 * Show and set the LACP interval. Interface must be down, and the mode
866 * must be set to 802.3ad mode.
867 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700868static ssize_t bonding_show_lacp(struct device *d,
869 struct device_attribute *attr,
870 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800871{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700872 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800873
874 return sprintf(buf, "%s %d\n",
875 bond_lacp_tbl[bond->params.lacp_fast].modename,
Wagner Ferenc7bd46502007-12-06 23:40:28 -0800876 bond->params.lacp_fast);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800877}
878
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700879static ssize_t bonding_store_lacp(struct device *d,
880 struct device_attribute *attr,
881 const char *buf, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800882{
883 int new_value, ret = count;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700884 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800885
886 if (bond->dev->flags & IFF_UP) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000887 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800888 ": %s: Unable to update LACP rate because interface is up.\n",
889 bond->dev->name);
890 ret = -EPERM;
891 goto out;
892 }
893
894 if (bond->params.mode != BOND_MODE_8023AD) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000895 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800896 ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n",
897 bond->dev->name);
898 ret = -EPERM;
899 goto out;
900 }
901
Jay Vosburghece95f72008-01-17 16:25:01 -0800902 new_value = bond_parse_parm(buf, bond_lacp_tbl);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800903
904 if ((new_value == 1) || (new_value == 0)) {
905 bond->params.lacp_fast = new_value;
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000906 pr_info(DRV_NAME ": %s: Setting LACP rate to %s (%d).\n",
907 bond->dev->name, bond_lacp_tbl[new_value].modename,
908 new_value);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800909 } else {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000910 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800911 ": %s: Ignoring invalid LACP rate value %.*s.\n",
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000912 bond->dev->name, (int)strlen(buf) - 1, buf);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800913 ret = -EINVAL;
914 }
915out:
916 return ret;
917}
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000918static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR,
919 bonding_show_lacp, bonding_store_lacp);
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800920
Jay Vosburghfd989c82008-11-04 17:51:16 -0800921static ssize_t bonding_show_ad_select(struct device *d,
922 struct device_attribute *attr,
923 char *buf)
924{
925 struct bonding *bond = to_bond(d);
926
927 return sprintf(buf, "%s %d\n",
928 ad_select_tbl[bond->params.ad_select].modename,
929 bond->params.ad_select);
930}
931
932
933static ssize_t bonding_store_ad_select(struct device *d,
934 struct device_attribute *attr,
935 const char *buf, size_t count)
936{
937 int new_value, ret = count;
938 struct bonding *bond = to_bond(d);
939
940 if (bond->dev->flags & IFF_UP) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000941 pr_err(DRV_NAME
Jay Vosburghfd989c82008-11-04 17:51:16 -0800942 ": %s: Unable to update ad_select because interface "
943 "is up.\n", bond->dev->name);
944 ret = -EPERM;
945 goto out;
946 }
947
948 new_value = bond_parse_parm(buf, ad_select_tbl);
949
950 if (new_value != -1) {
951 bond->params.ad_select = new_value;
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000952 pr_info(DRV_NAME
Jay Vosburghfd989c82008-11-04 17:51:16 -0800953 ": %s: Setting ad_select to %s (%d).\n",
954 bond->dev->name, ad_select_tbl[new_value].modename,
955 new_value);
956 } else {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000957 pr_err(DRV_NAME
Jay Vosburghfd989c82008-11-04 17:51:16 -0800958 ": %s: Ignoring invalid ad_select value %.*s.\n",
959 bond->dev->name, (int)strlen(buf) - 1, buf);
960 ret = -EINVAL;
961 }
962out:
963 return ret;
964}
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000965static DEVICE_ATTR(ad_select, S_IRUGO | S_IWUSR,
966 bonding_show_ad_select, bonding_store_ad_select);
Jay Vosburghfd989c82008-11-04 17:51:16 -0800967
Mitch Williamsb76cdba2005-11-09 10:36:41 -0800968/*
Moni Shoua7893b242008-05-17 21:10:12 -0700969 * Show and set the number of grat ARP to send after a failover event.
970 */
971static ssize_t bonding_show_n_grat_arp(struct device *d,
972 struct device_attribute *attr,
973 char *buf)
974{
975 struct bonding *bond = to_bond(d);
976
977 return sprintf(buf, "%d\n", bond->params.num_grat_arp);
978}
979
980static ssize_t bonding_store_n_grat_arp(struct device *d,
981 struct device_attribute *attr,
982 const char *buf, size_t count)
983{
984 int new_value, ret = count;
985 struct bonding *bond = to_bond(d);
986
987 if (sscanf(buf, "%d", &new_value) != 1) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000988 pr_err(DRV_NAME
Moni Shoua7893b242008-05-17 21:10:12 -0700989 ": %s: no num_grat_arp value specified.\n",
990 bond->dev->name);
991 ret = -EINVAL;
992 goto out;
993 }
994 if (new_value < 0 || new_value > 255) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +0000995 pr_err(DRV_NAME
Moni Shoua7893b242008-05-17 21:10:12 -0700996 ": %s: Invalid num_grat_arp value %d not in range 0-255; rejected.\n",
997 bond->dev->name, new_value);
998 ret = -EINVAL;
999 goto out;
1000 } else {
1001 bond->params.num_grat_arp = new_value;
1002 }
1003out:
1004 return ret;
1005}
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001006static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR,
1007 bonding_show_n_grat_arp, bonding_store_n_grat_arp);
Brian Haley305d5522008-11-04 17:51:14 -08001008
1009/*
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001010 * Show and set the number of unsolicited NA's to send after a failover event.
Brian Haley305d5522008-11-04 17:51:14 -08001011 */
1012static ssize_t bonding_show_n_unsol_na(struct device *d,
1013 struct device_attribute *attr,
1014 char *buf)
1015{
1016 struct bonding *bond = to_bond(d);
1017
1018 return sprintf(buf, "%d\n", bond->params.num_unsol_na);
1019}
1020
1021static ssize_t bonding_store_n_unsol_na(struct device *d,
1022 struct device_attribute *attr,
1023 const char *buf, size_t count)
1024{
1025 int new_value, ret = count;
1026 struct bonding *bond = to_bond(d);
1027
1028 if (sscanf(buf, "%d", &new_value) != 1) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001029 pr_err(DRV_NAME
Brian Haley305d5522008-11-04 17:51:14 -08001030 ": %s: no num_unsol_na value specified.\n",
1031 bond->dev->name);
1032 ret = -EINVAL;
1033 goto out;
1034 }
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001035
Brian Haley305d5522008-11-04 17:51:14 -08001036 if (new_value < 0 || new_value > 255) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001037 pr_err(DRV_NAME
Brian Haley305d5522008-11-04 17:51:14 -08001038 ": %s: Invalid num_unsol_na value %d not in range 0-255; rejected.\n",
1039 bond->dev->name, new_value);
1040 ret = -EINVAL;
1041 goto out;
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001042 } else
Brian Haley305d5522008-11-04 17:51:14 -08001043 bond->params.num_unsol_na = new_value;
Brian Haley305d5522008-11-04 17:51:14 -08001044out:
1045 return ret;
1046}
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001047static DEVICE_ATTR(num_unsol_na, S_IRUGO | S_IWUSR,
1048 bonding_show_n_unsol_na, bonding_store_n_unsol_na);
Brian Haley305d5522008-11-04 17:51:14 -08001049
Moni Shoua7893b242008-05-17 21:10:12 -07001050/*
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001051 * Show and set the MII monitor interval. There are two tricky bits
1052 * here. First, if MII monitoring is activated, then we must disable
1053 * ARP monitoring. Second, if the timer isn't running, we must
1054 * start it.
1055 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001056static ssize_t bonding_show_miimon(struct device *d,
1057 struct device_attribute *attr,
1058 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001059{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001060 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001061
Wagner Ferenc7bd46502007-12-06 23:40:28 -08001062 return sprintf(buf, "%d\n", bond->params.miimon);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001063}
1064
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001065static ssize_t bonding_store_miimon(struct device *d,
1066 struct device_attribute *attr,
1067 const char *buf, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001068{
1069 int new_value, ret = count;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001070 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001071
1072 if (sscanf(buf, "%d", &new_value) != 1) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001073 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001074 ": %s: no miimon value specified.\n",
1075 bond->dev->name);
1076 ret = -EINVAL;
1077 goto out;
1078 }
1079 if (new_value < 0) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001080 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001081 ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n",
1082 bond->dev->name, new_value, 1, INT_MAX);
1083 ret = -EINVAL;
1084 goto out;
1085 } else {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001086 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001087 ": %s: Setting MII monitoring interval to %d.\n",
1088 bond->dev->name, new_value);
1089 bond->params.miimon = new_value;
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001090 if (bond->params.updelay)
1091 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001092 ": %s: Note: Updating updelay (to %d) "
1093 "since it is a multiple of the miimon value.\n",
1094 bond->dev->name,
1095 bond->params.updelay * bond->params.miimon);
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001096 if (bond->params.downdelay)
1097 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001098 ": %s: Note: Updating downdelay (to %d) "
1099 "since it is a multiple of the miimon value.\n",
1100 bond->dev->name,
1101 bond->params.downdelay * bond->params.miimon);
1102 if (bond->params.arp_interval) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001103 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001104 ": %s: MII monitoring cannot be used with "
1105 "ARP monitoring. Disabling ARP monitoring...\n",
1106 bond->dev->name);
1107 bond->params.arp_interval = 0;
Jay Vosburgh6cf3f412008-11-03 18:16:50 -08001108 bond->dev->priv_flags &= ~IFF_MASTER_ARPMON;
Jay Vosburghf5b2b962006-09-22 21:54:53 -07001109 if (bond->params.arp_validate) {
1110 bond_unregister_arp(bond);
1111 bond->params.arp_validate =
1112 BOND_ARP_VALIDATE_NONE;
1113 }
Jay Vosburgh1b76b312007-10-17 17:37:45 -07001114 if (delayed_work_pending(&bond->arp_work)) {
1115 cancel_delayed_work(&bond->arp_work);
1116 flush_workqueue(bond->wq);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001117 }
1118 }
1119
1120 if (bond->dev->flags & IFF_UP) {
1121 /* If the interface is up, we may need to fire off
1122 * the MII timer. If the interface is down, the
1123 * timer will get fired off when the open function
1124 * is called.
1125 */
Jay Vosburgh1b76b312007-10-17 17:37:45 -07001126 if (!delayed_work_pending(&bond->mii_work)) {
1127 INIT_DELAYED_WORK(&bond->mii_work,
1128 bond_mii_monitor);
1129 queue_delayed_work(bond->wq,
1130 &bond->mii_work, 0);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001131 }
1132 }
1133 }
1134out:
1135 return ret;
1136}
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001137static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR,
1138 bonding_show_miimon, bonding_store_miimon);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001139
1140/*
1141 * Show and set the primary slave. The store function is much
1142 * simpler than bonding_store_slaves function because it only needs to
1143 * handle one interface name.
1144 * The bond must be a mode that supports a primary for this be
1145 * set.
1146 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001147static ssize_t bonding_show_primary(struct device *d,
1148 struct device_attribute *attr,
1149 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001150{
1151 int count = 0;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001152 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001153
1154 if (bond->primary_slave)
Wagner Ferenc7bd46502007-12-06 23:40:28 -08001155 count = sprintf(buf, "%s\n", bond->primary_slave->dev->name);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001156
1157 return count;
1158}
1159
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001160static ssize_t bonding_store_primary(struct device *d,
1161 struct device_attribute *attr,
1162 const char *buf, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001163{
1164 int i;
1165 struct slave *slave;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001166 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001167
Eric W. Biederman496a60c2009-05-13 17:02:50 +00001168 if (!rtnl_trylock())
1169 return restart_syscall();
Jay Vosburghe934dd72008-01-17 16:24:57 -08001170 read_lock(&bond->lock);
1171 write_lock_bh(&bond->curr_slave_lock);
1172
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001173 if (!USES_PRIMARY(bond->params.mode)) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001174 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001175 ": %s: Unable to set primary slave; %s is in mode %d\n",
1176 bond->dev->name, bond->dev->name, bond->params.mode);
1177 } else {
1178 bond_for_each_slave(bond, slave, i) {
1179 if (strnicmp
1180 (slave->dev->name, buf,
1181 strlen(slave->dev->name)) == 0) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001182 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001183 ": %s: Setting %s as primary slave.\n",
1184 bond->dev->name, slave->dev->name);
1185 bond->primary_slave = slave;
Jiri Pirkoce501ca2009-09-18 02:13:22 +00001186 strcpy(bond->params.primary, slave->dev->name);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001187 bond_select_active_slave(bond);
1188 goto out;
1189 }
1190 }
1191
1192 /* if we got here, then we didn't match the name of any slave */
1193
1194 if (strlen(buf) == 0 || buf[0] == '\n') {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001195 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001196 ": %s: Setting primary slave to None.\n",
1197 bond->dev->name);
Luiz Fernando Capitulino3418db72006-02-01 00:54:34 -08001198 bond->primary_slave = NULL;
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001199 bond_select_active_slave(bond);
1200 } else {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001201 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001202 ": %s: Unable to set %.*s as primary slave as it is not a slave.\n",
1203 bond->dev->name, (int)strlen(buf) - 1, buf);
1204 }
1205 }
1206out:
Jay Vosburghe934dd72008-01-17 16:24:57 -08001207 write_unlock_bh(&bond->curr_slave_lock);
1208 read_unlock(&bond->lock);
Jay Vosburgh6603a6f2007-10-17 17:37:50 -07001209 rtnl_unlock();
1210
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001211 return count;
1212}
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001213static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR,
1214 bonding_show_primary, bonding_store_primary);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001215
1216/*
1217 * Show and set the use_carrier flag.
1218 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001219static ssize_t bonding_show_carrier(struct device *d,
1220 struct device_attribute *attr,
1221 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001222{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001223 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001224
Wagner Ferenc7bd46502007-12-06 23:40:28 -08001225 return sprintf(buf, "%d\n", bond->params.use_carrier);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001226}
1227
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001228static ssize_t bonding_store_carrier(struct device *d,
1229 struct device_attribute *attr,
1230 const char *buf, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001231{
1232 int new_value, ret = count;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001233 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001234
1235
1236 if (sscanf(buf, "%d", &new_value) != 1) {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001237 pr_err(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001238 ": %s: no use_carrier value specified.\n",
1239 bond->dev->name);
1240 ret = -EINVAL;
1241 goto out;
1242 }
1243 if ((new_value == 0) || (new_value == 1)) {
1244 bond->params.use_carrier = new_value;
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001245 pr_info(DRV_NAME ": %s: Setting use_carrier to %d.\n",
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001246 bond->dev->name, new_value);
1247 } else {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001248 pr_info(DRV_NAME
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001249 ": %s: Ignoring invalid use_carrier value %d.\n",
1250 bond->dev->name, new_value);
1251 }
1252out:
1253 return count;
1254}
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001255static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR,
1256 bonding_show_carrier, bonding_store_carrier);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001257
1258
1259/*
1260 * Show and set currently active_slave.
1261 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001262static ssize_t bonding_show_active_slave(struct device *d,
1263 struct device_attribute *attr,
1264 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001265{
1266 struct slave *curr;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001267 struct bonding *bond = to_bond(d);
Wagner Ferenc16cd0162007-12-06 23:40:29 -08001268 int count = 0;
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001269
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001270 read_lock(&bond->curr_slave_lock);
1271 curr = bond->curr_active_slave;
1272 read_unlock(&bond->curr_slave_lock);
1273
1274 if (USES_PRIMARY(bond->params.mode) && curr)
Wagner Ferenc7bd46502007-12-06 23:40:28 -08001275 count = sprintf(buf, "%s\n", curr->dev->name);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001276 return count;
1277}
1278
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001279static ssize_t bonding_store_active_slave(struct device *d,
1280 struct device_attribute *attr,
1281 const char *buf, size_t count)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001282{
1283 int i;
1284 struct slave *slave;
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001285 struct slave *old_active = NULL;
1286 struct slave *new_active = NULL;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001287 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001288
Eric W. Biederman496a60c2009-05-13 17:02:50 +00001289 if (!rtnl_trylock())
1290 return restart_syscall();
Jay Vosburghe934dd72008-01-17 16:24:57 -08001291 read_lock(&bond->lock);
1292 write_lock_bh(&bond->curr_slave_lock);
Jay Vosburgh1466a212007-11-06 13:33:28 -08001293
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001294 if (!USES_PRIMARY(bond->params.mode))
1295 pr_info(DRV_NAME ": %s: Unable to change active slave;"
1296 " %s is in mode %d\n",
1297 bond->dev->name, bond->dev->name, bond->params.mode);
1298 else {
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001299 bond_for_each_slave(bond, slave, i) {
1300 if (strnicmp
1301 (slave->dev->name, buf,
1302 strlen(slave->dev->name)) == 0) {
1303 old_active = bond->curr_active_slave;
1304 new_active = slave;
Jay Vosburgha50d8de2006-09-22 21:53:25 -07001305 if (new_active == old_active) {
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001306 /* do nothing */
Jiri Pirkoe5e2a8f2009-08-13 04:11:52 +00001307 pr_info(DRV_NAME
1308 ": %s: %s is already the current active slave.\n",
1309 bond->dev->name, slave->dev->name);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001310 goto out;
1311 }
1312 else {
1313 if ((new_active) &&
1314 (old_active) &&
1315 (new_active->link == BOND_LINK_UP) &&
1316 IS_UP(new_active->dev)) {
Jiri Pirkoe5e2a8f2009-08-13 04:11:52 +00001317 pr_info(DRV_NAME
1318 ": %s: Setting %s as active slave.\n",
1319 bond->dev->name, slave->dev->name);
1320 bond_change_active_slave(bond, new_active);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001321 }
1322 else {
Jiri Pirkoe5e2a8f2009-08-13 04:11:52 +00001323 pr_info(DRV_NAME
1324 ": %s: Could not set %s as active slave; "
1325 "either %s is down or the link is down.\n",
1326 bond->dev->name, slave->dev->name,
1327 slave->dev->name);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001328 }
1329 goto out;
1330 }
1331 }
1332 }
1333
1334 /* if we got here, then we didn't match the name of any slave */
1335
1336 if (strlen(buf) == 0 || buf[0] == '\n') {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001337 pr_info(DRV_NAME
1338 ": %s: Setting active slave to None.\n",
1339 bond->dev->name);
Luiz Fernando Capitulino3418db72006-02-01 00:54:34 -08001340 bond->primary_slave = NULL;
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001341 bond_select_active_slave(bond);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001342 } else {
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001343 pr_info(DRV_NAME ": %s: Unable to set %.*s"
1344 " as active slave as it is not a slave.\n",
1345 bond->dev->name, (int)strlen(buf) - 1, buf);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001346 }
1347 }
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001348 out:
Jay Vosburghe934dd72008-01-17 16:24:57 -08001349 write_unlock_bh(&bond->curr_slave_lock);
1350 read_unlock(&bond->lock);
Jay Vosburgh6603a6f2007-10-17 17:37:50 -07001351 rtnl_unlock();
1352
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001353 return count;
1354
1355}
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001356static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR,
1357 bonding_show_active_slave, bonding_store_active_slave);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001358
1359
1360/*
1361 * Show link status of the bond interface.
1362 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001363static ssize_t bonding_show_mii_status(struct device *d,
1364 struct device_attribute *attr,
1365 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001366{
1367 struct slave *curr;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001368 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001369
1370 read_lock(&bond->curr_slave_lock);
1371 curr = bond->curr_active_slave;
1372 read_unlock(&bond->curr_slave_lock);
1373
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001374 return sprintf(buf, "%s\n", curr ? "up" : "down");
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001375}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001376static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001377
1378
1379/*
1380 * Show current 802.3ad aggregator ID.
1381 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001382static ssize_t bonding_show_ad_aggregator(struct device *d,
1383 struct device_attribute *attr,
1384 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001385{
1386 int count = 0;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001387 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001388
1389 if (bond->params.mode == BOND_MODE_8023AD) {
1390 struct ad_info ad_info;
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001391 count = sprintf(buf, "%d\n",
1392 (bond_3ad_get_active_agg_info(bond, &ad_info))
1393 ? 0 : ad_info.aggregator_id);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001394 }
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001395
1396 return count;
1397}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001398static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001399
1400
1401/*
1402 * Show number of active 802.3ad ports.
1403 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001404static ssize_t bonding_show_ad_num_ports(struct device *d,
1405 struct device_attribute *attr,
1406 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001407{
1408 int count = 0;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001409 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001410
1411 if (bond->params.mode == BOND_MODE_8023AD) {
1412 struct ad_info ad_info;
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001413 count = sprintf(buf, "%d\n",
1414 (bond_3ad_get_active_agg_info(bond, &ad_info))
1415 ? 0 : ad_info.ports);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001416 }
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001417
1418 return count;
1419}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001420static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001421
1422
1423/*
1424 * Show current 802.3ad actor key.
1425 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001426static ssize_t bonding_show_ad_actor_key(struct device *d,
1427 struct device_attribute *attr,
1428 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001429{
1430 int count = 0;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001431 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001432
1433 if (bond->params.mode == BOND_MODE_8023AD) {
1434 struct ad_info ad_info;
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001435 count = sprintf(buf, "%d\n",
1436 (bond_3ad_get_active_agg_info(bond, &ad_info))
1437 ? 0 : ad_info.actor_key);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001438 }
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001439
1440 return count;
1441}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001442static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001443
1444
1445/*
1446 * Show current 802.3ad partner key.
1447 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001448static ssize_t bonding_show_ad_partner_key(struct device *d,
1449 struct device_attribute *attr,
1450 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001451{
1452 int count = 0;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001453 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001454
1455 if (bond->params.mode == BOND_MODE_8023AD) {
1456 struct ad_info ad_info;
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001457 count = sprintf(buf, "%d\n",
1458 (bond_3ad_get_active_agg_info(bond, &ad_info))
1459 ? 0 : ad_info.partner_key);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001460 }
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001461
1462 return count;
1463}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001464static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001465
1466
1467/*
1468 * Show current 802.3ad partner mac.
1469 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001470static ssize_t bonding_show_ad_partner_mac(struct device *d,
1471 struct device_attribute *attr,
1472 char *buf)
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001473{
1474 int count = 0;
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001475 struct bonding *bond = to_bond(d);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001476
1477 if (bond->params.mode == BOND_MODE_8023AD) {
1478 struct ad_info ad_info;
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001479 if (!bond_3ad_get_active_agg_info(bond, &ad_info))
Johannes Berge1749612008-10-27 15:59:26 -07001480 count = sprintf(buf, "%pM\n", ad_info.partner_system);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001481 }
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001482
1483 return count;
1484}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001485static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001486
1487
1488
1489static struct attribute *per_bond_attrs[] = {
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001490 &dev_attr_slaves.attr,
1491 &dev_attr_mode.attr,
Jay Vosburghdd957c52007-10-09 19:57:24 -07001492 &dev_attr_fail_over_mac.attr,
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001493 &dev_attr_arp_validate.attr,
1494 &dev_attr_arp_interval.attr,
1495 &dev_attr_arp_ip_target.attr,
1496 &dev_attr_downdelay.attr,
1497 &dev_attr_updelay.attr,
1498 &dev_attr_lacp_rate.attr,
Jay Vosburghfd989c82008-11-04 17:51:16 -08001499 &dev_attr_ad_select.attr,
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001500 &dev_attr_xmit_hash_policy.attr,
Moni Shoua7893b242008-05-17 21:10:12 -07001501 &dev_attr_num_grat_arp.attr,
Brian Haley305d5522008-11-04 17:51:14 -08001502 &dev_attr_num_unsol_na.attr,
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001503 &dev_attr_miimon.attr,
1504 &dev_attr_primary.attr,
1505 &dev_attr_use_carrier.attr,
1506 &dev_attr_active_slave.attr,
1507 &dev_attr_mii_status.attr,
1508 &dev_attr_ad_aggregator.attr,
1509 &dev_attr_ad_num_ports.attr,
1510 &dev_attr_ad_actor_key.attr,
1511 &dev_attr_ad_partner_key.attr,
1512 &dev_attr_ad_partner_mac.attr,
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001513 NULL,
1514};
1515
1516static struct attribute_group bonding_group = {
1517 .name = "bonding",
1518 .attrs = per_bond_attrs,
1519};
1520
1521/*
1522 * Initialize sysfs. This sets up the bonding_masters file in
1523 * /sys/class/net.
1524 */
1525int bond_create_sysfs(void)
1526{
Jay Vosburghb8a97872008-06-13 18:12:04 -07001527 int ret;
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001528
Jay Vosburghb8a97872008-06-13 18:12:04 -07001529 ret = netdev_class_create_file(&class_attr_bonding_masters);
Jay Vosburgh877cbd32007-01-19 18:15:47 -08001530 /*
1531 * Permit multiple loads of the module by ignoring failures to
1532 * create the bonding_masters sysfs file. Bonding devices
1533 * created by second or subsequent loads of the module will
1534 * not be listed in, or controllable by, bonding_masters, but
1535 * will have the usual "bonding" sysfs directory.
1536 *
1537 * This is done to preserve backwards compatibility for
1538 * initscripts/sysconfig, which load bonding multiple times to
1539 * configure multiple bonding devices.
1540 */
1541 if (ret == -EEXIST) {
Stephen Hemminger38d2f382008-05-14 22:35:04 -07001542 /* Is someone being kinky and naming a device bonding_master? */
1543 if (__dev_get_by_name(&init_net,
1544 class_attr_bonding_masters.attr.name))
Jiri Pirkoe5e2a8f2009-08-13 04:11:52 +00001545 pr_err("network device named %s already "
1546 "exists in sysfs",
Stephen Hemminger38d2f382008-05-14 22:35:04 -07001547 class_attr_bonding_masters.attr.name);
Stephen Hemminger130aa612009-06-11 05:46:04 -07001548 ret = 0;
Jay Vosburgh877cbd32007-01-19 18:15:47 -08001549 }
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001550
1551 return ret;
1552
1553}
1554
1555/*
1556 * Remove /sys/class/net/bonding_masters.
1557 */
1558void bond_destroy_sysfs(void)
1559{
Jay Vosburghb8a97872008-06-13 18:12:04 -07001560 netdev_class_remove_file(&class_attr_bonding_masters);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001561}
1562
1563/*
1564 * Initialize sysfs for each bond. This sets up and registers
1565 * the 'bondctl' directory for each individual bond under /sys/class/net.
1566 */
1567int bond_create_sysfs_entry(struct bonding *bond)
1568{
1569 struct net_device *dev = bond->dev;
1570 int err;
1571
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001572 err = sysfs_create_group(&(dev->dev.kobj), &bonding_group);
Stephen Hemminger3d632c32009-06-12 19:02:48 +00001573 if (err)
Jiri Pirkoe5e2a8f2009-08-13 04:11:52 +00001574 pr_emerg("eek! didn't create group!\n");
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001575
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001576 return err;
1577}
1578/*
1579 * Remove sysfs entries for each bond.
1580 */
1581void bond_destroy_sysfs_entry(struct bonding *bond)
1582{
1583 struct net_device *dev = bond->dev;
1584
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -07001585 sysfs_remove_group(&(dev->dev.kobj), &bonding_group);
Mitch Williamsb76cdba2005-11-09 10:36:41 -08001586}
1587