err.no Git - linux-2.6/blob - drivers/net/bonding/bond_sysfs.c

   1
   2 /*
   3  * Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18  *
  19  * The full GNU General Public License is included in this distribution in the
  20  * file called LICENSE.
  21  *
  22  */
  23 #include <linux/kernel.h>
  24 #include <linux/module.h>
  25 #include <linux/device.h>
  26 #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>
  34 #include <linux/ctype.h>
  35 #include <linux/inet.h>
  36 #include <linux/rtnetlink.h>
  37 #include <net/net_namespace.h>
  38
  39 /* #define BONDING_DEBUG 1 */
  40 #include "bonding.h"
  41 #define to_dev(obj)     container_of(obj,struct device,kobj)
  42 #define to_bond(cd)     ((struct bonding *)(to_net_dev(cd)->priv))
  43
  44 /*---------------------------- Declarations -------------------------------*/
  45
  46
  47 extern struct list_head bond_dev_list;
  48 extern struct bond_params bonding_defaults;
  49 extern struct bond_parm_tbl bond_mode_tbl[];
  50 extern struct bond_parm_tbl bond_lacp_tbl[];
  51 extern struct bond_parm_tbl xmit_hashtype_tbl[];
  52 extern struct bond_parm_tbl arp_validate_tbl[];
  53
  54 static int expected_refcount = -1;
  55 static struct class *netdev_class;
  56 /*--------------------------- Data Structures -----------------------------*/
  57
  58 /* Bonding sysfs lock.  Why can't we just use the subsytem lock?
  59  * Because kobject_register tries to acquire the subsystem lock.  If
  60  * we already hold the lock (which we would if the user was creating
  61  * a new bond through the sysfs interface), we deadlock.
  62  * This lock is only needed when deleting a bond - we need to make sure
  63  * that we don't collide with an ongoing ioctl.
  64  */
  65
  66 struct rw_semaphore bonding_rwsem;
  67
  68
  69
  70
  71 /*------------------------------ Functions --------------------------------*/
  72
  73 /*
  74  * "show" function for the bond_masters attribute.
  75  * The class parameter is ignored.
  76  */
  77 static ssize_t bonding_show_bonds(struct class *cls, char *buffer)
  78 {
  79         int res = 0;
  80         struct bonding *bond;
  81
  82         down_read(&(bonding_rwsem));
  83
  84         list_for_each_entry(bond, &bond_dev_list, bond_list) {
  85                 if (res > (PAGE_SIZE - IFNAMSIZ)) {
  86                         /* not enough space for another interface name */
  87                         if ((PAGE_SIZE - res) > 10)
  88                                 res = PAGE_SIZE - 10;
  89                         res += sprintf(buffer + res, "++more++");
  90                         break;
  91                 }
  92                 res += sprintf(buffer + res, "%s ",
  93                                bond->dev->name);
  94         }
  95         res += sprintf(buffer + res, "\n");
  96         res++;
  97         up_read(&(bonding_rwsem));
  98         return res;
  99 }
 100
 101 /*
 102  * "store" function for the bond_masters attribute.  This is what
 103  * creates and deletes entire bonds.
 104  *
 105  * The class parameter is ignored.
 106  *
 107  */
 108
 109 static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t count)
 110 {
 111         char command[IFNAMSIZ + 1] = {0, };
 112         char *ifname;
 113         int res = count;
 114         struct bonding *bond;
 115         struct bonding *nxt;
 116
 117         down_write(&(bonding_rwsem));
 118         sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
 119         ifname = command + 1;
 120         if ((strlen(command) <= 1) ||
 121             !dev_valid_name(ifname))
 122                 goto err_no_cmd;
 123
 124         if (command[0] == '+') {
 125
 126                 /* Check to see if the bond already exists. */
 127                 list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list)
 128                         if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) {
 129                                 printk(KERN_ERR DRV_NAME
 130                                         ": cannot add bond %s; it already exists\n",
 131                                         ifname);
 132                                 res = -EPERM;
 133                                 goto out;
 134                         }
 135
 136                 printk(KERN_INFO DRV_NAME
 137                         ": %s is being created...\n", ifname);
 138                 if (bond_create(ifname, &bonding_defaults, &bond)) {
 139                         printk(KERN_INFO DRV_NAME
 140                         ": %s interface already exists. Bond creation failed.\n",
 141                         ifname);
 142                         res = -EPERM;
 143                 }
 144                 goto out;
 145         }
 146
 147         if (command[0] == '-') {
 148                 list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list)
 149                         if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) {
 150                                 rtnl_lock();
 151                                 /* check the ref count on the bond's kobject.
 152                                  * If it's > expected, then there's a file open,
 153                                  * and we have to fail.
 154                                  */
 155                                 if (atomic_read(&bond->dev->dev.kobj.kref.refcount)
 156                                                         > expected_refcount){
 157                                         rtnl_unlock();
 158                                         printk(KERN_INFO DRV_NAME
 159                                                 ": Unable remove bond %s due to open references.\n",
 160                                                 ifname);
 161                                         res = -EPERM;
 162                                         goto out;
 163                                 }
 164                                 printk(KERN_INFO DRV_NAME
 165                                         ": %s is being deleted...\n",
 166                                         bond->dev->name);
 167                                 bond_deinit(bond->dev);
 168                                 bond_destroy_sysfs_entry(bond);
 169                                 unregister_netdevice(bond->dev);
 170                                 rtnl_unlock();
 171                                 goto out;
 172                         }
 173
 174                 printk(KERN_ERR DRV_NAME
 175                         ": unable to delete non-existent bond %s\n", ifname);
 176                 res = -ENODEV;
 177                 goto out;
 178         }
 179
 180 err_no_cmd:
 181         printk(KERN_ERR DRV_NAME
 182                 ": no command found in bonding_masters. Use +ifname or -ifname.\n");
 183         res = -EPERM;
 184
 185         /* Always return either count or an error.  If you return 0, you'll
 186          * get called forever, which is bad.
 187          */
 188 out:
 189         up_write(&(bonding_rwsem));
 190         return res;
 191 }
 192 /* class attribute for bond_masters file.  This ends up in /sys/class/net */
 193 static CLASS_ATTR(bonding_masters,  S_IWUSR | S_IRUGO,
 194                   bonding_show_bonds, bonding_store_bonds);
 195
 196 int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave)
 197 {
 198         char linkname[IFNAMSIZ+7];
 199         int ret = 0;
 200
 201         /* first, create a link from the slave back to the master */
 202         ret = sysfs_create_link(&(slave->dev.kobj), &(master->dev.kobj),
 203                                 "master");
 204         if (ret)
 205                 return ret;
 206         /* next, create a link from the master to the slave */
 207         sprintf(linkname,"slave_%s",slave->name);
 208         ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj),
 209                                 linkname);
 210         return ret;
 211
 212 }
 213
 214 void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave)
 215 {
 216         char linkname[IFNAMSIZ+7];
 217
 218         sysfs_remove_link(&(slave->dev.kobj), "master");
 219         sprintf(linkname,"slave_%s",slave->name);
 220         sysfs_remove_link(&(master->dev.kobj), linkname);
 221 }
 222
 223
 224 /*
 225  * Show the slaves in the current bond.
 226  */
 227 static ssize_t bonding_show_slaves(struct device *d,
 228                                    struct device_attribute *attr, char *buf)
 229 {
 230         struct slave *slave;
 231         int i, res = 0;
 232         struct bonding *bond = to_bond(d);
 233
 234         read_lock_bh(&bond->lock);
 235         bond_for_each_slave(bond, slave, i) {
 236                 if (res > (PAGE_SIZE - IFNAMSIZ)) {
 237                         /* not enough space for another interface name */
 238                         if ((PAGE_SIZE - res) > 10)
 239                                 res = PAGE_SIZE - 10;
 240                         res += sprintf(buf + res, "++more++");
 241                         break;
 242                 }
 243                 res += sprintf(buf + res, "%s ", slave->dev->name);
 244         }
 245         read_unlock_bh(&bond->lock);
 246         res += sprintf(buf + res, "\n");
 247         res++;
 248         return res;
 249 }
 250
 251 /*
 252  * Set the slaves in the current bond.  The bond interface must be
 253  * up for this to succeed.
 254  * This function is largely the same flow as bonding_update_bonds().
 255  */
 256 static ssize_t bonding_store_slaves(struct device *d,
 257                                     struct device_attribute *attr,
 258                                     const char *buffer, size_t count)
 259 {
 260         char command[IFNAMSIZ + 1] = { 0, };
 261         char *ifname;
 262         int i, res, found, ret = count;
 263         struct slave *slave;
 264         struct net_device *dev = NULL;
 265         struct bonding *bond = to_bond(d);
 266
 267         /* Quick sanity check -- is the bond interface up? */
 268         if (!(bond->dev->flags & IFF_UP)) {
 269                 printk(KERN_WARNING DRV_NAME
 270                        ": %s: doing slave updates when interface is down.\n",
 271                        bond->dev->name);
 272         }
 273
 274         /* Note:  We can't hold bond->lock here, as bond_create grabs it. */
 275
 276         sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
 277         ifname = command + 1;
 278         if ((strlen(command) <= 1) ||
 279             !dev_valid_name(ifname))
 280                 goto err_no_cmd;
 281
 282         if (command[0] == '+') {
 283
 284                 /* Got a slave name in ifname.  Is it already in the list? */
 285                 found = 0;
 286                 read_lock_bh(&bond->lock);
 287                 bond_for_each_slave(bond, slave, i)
 288                         if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
 289                                 printk(KERN_ERR DRV_NAME
 290                                        ": %s: Interface %s is already enslaved!\n",
 291                                        bond->dev->name, ifname);
 292                                 ret = -EPERM;
 293                                 read_unlock_bh(&bond->lock);
 294                                 goto out;
 295                         }
 296
 297                 read_unlock_bh(&bond->lock);
 298                 printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n",
 299                        bond->dev->name, ifname);
 300                 dev = dev_get_by_name(&init_net, ifname);
 301                 if (!dev) {
 302                         printk(KERN_INFO DRV_NAME
 303                                ": %s: Interface %s does not exist!\n",
 304                                bond->dev->name, ifname);
 305                         ret = -EPERM;
 306                         goto out;
 307                 }
 308                 else
 309                         dev_put(dev);
 310
 311                 if (dev->flags & IFF_UP) {
 312                         printk(KERN_ERR DRV_NAME
 313                                ": %s: Error: Unable to enslave %s "
 314                                "because it is already up.\n",
 315                                bond->dev->name, dev->name);
 316                         ret = -EPERM;
 317                         goto out;
 318                 }
 319                 /* If this is the first slave, then we need to set
 320                    the master's hardware address to be the same as the
 321                    slave's. */
 322                 if (!(*((u32 *) & (bond->dev->dev_addr[0])))) {
 323                         memcpy(bond->dev->dev_addr, dev->dev_addr,
 324                                dev->addr_len);
 325                 }
 326
 327                 /* Set the slave's MTU to match the bond */
 328                 if (dev->mtu != bond->dev->mtu) {
 329                         if (dev->change_mtu) {
 330                                 res = dev->change_mtu(dev,
 331                                                       bond->dev->mtu);
 332                                 if (res) {
 333                                         ret = res;
 334                                         goto out;
 335                                 }
 336                         } else {
 337                                 dev->mtu = bond->dev->mtu;
 338                         }
 339                 }
 340                 rtnl_lock();
 341                 res = bond_enslave(bond->dev, dev);
 342                 rtnl_unlock();
 343                 if (res) {
 344                         ret = res;
 345                 }
 346                 goto out;
 347         }
 348
 349         if (command[0] == '-') {
 350                 dev = NULL;
 351                 bond_for_each_slave(bond, slave, i)
 352                         if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
 353                                 dev = slave->dev;
 354                                 break;
 355                         }
 356                 if (dev) {
 357                         printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n",
 358                                 bond->dev->name, dev->name);
 359                         rtnl_lock();
 360                         res = bond_release(bond->dev, dev);
 361                         rtnl_unlock();
 362                         if (res) {
 363                                 ret = res;
 364                                 goto out;
 365                         }
 366                         /* set the slave MTU to the default */
 367                         if (dev->change_mtu) {
 368                                 dev->change_mtu(dev, 1500);
 369                         } else {
 370                                 dev->mtu = 1500;
 371                         }
 372                 }
 373                 else {
 374                         printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n",
 375                                 ifname, bond->dev->name);
 376                         ret = -ENODEV;
 377                 }
 378                 goto out;
 379         }
 380
 381 err_no_cmd:
 382         printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name);
 383         ret = -EPERM;
 384
 385 out:
 386         return ret;
 387 }
 388
 389 static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves);
 390
 391 /*
 392  * Show and set the bonding mode.  The bond interface must be down to
 393  * change the mode.
 394  */
 395 static ssize_t bonding_show_mode(struct device *d,
 396                                  struct device_attribute *attr, char *buf)
 397 {
 398         struct bonding *bond = to_bond(d);
 399
 400         return sprintf(buf, "%s %d\n",
 401                         bond_mode_tbl[bond->params.mode].modename,
 402                         bond->params.mode) + 1;
 403 }
 404
 405 static ssize_t bonding_store_mode(struct device *d,
 406                                   struct device_attribute *attr,
 407                                   const char *buf, size_t count)
 408 {
 409         int new_value, ret = count;
 410         struct bonding *bond = to_bond(d);
 411
 412         if (bond->dev->flags & IFF_UP) {
 413                 printk(KERN_ERR DRV_NAME
 414                        ": unable to update mode of %s because interface is up.\n",
 415                        bond->dev->name);
 416                 ret = -EPERM;
 417                 goto out;
 418         }
 419
 420         new_value = bond_parse_parm((char *)buf, bond_mode_tbl);
 421         if (new_value < 0)  {
 422                 printk(KERN_ERR DRV_NAME
 423                        ": %s: Ignoring invalid mode value %.*s.\n",
 424                        bond->dev->name,
 425                        (int)strlen(buf) - 1, buf);
 426                 ret = -EINVAL;
 427                 goto out;
 428         } else {
 429                 if (bond->params.mode == BOND_MODE_8023AD)
 430                         bond_unset_master_3ad_flags(bond);
 431
 432                 if (bond->params.mode == BOND_MODE_ALB)
 433                         bond_unset_master_alb_flags(bond);
 434
 435                 bond->params.mode = new_value;
 436                 bond_set_mode_ops(bond, bond->params.mode);
 437                 printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n",
 438                         bond->dev->name, bond_mode_tbl[new_value].modename, new_value);
 439         }
 440 out:
 441         return ret;
 442 }
 443 static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode);
 444
 445 /*
 446  * Show and set the bonding transmit hash method.  The bond interface must be down to
 447  * change the xmit hash policy.
 448  */
 449 static ssize_t bonding_show_xmit_hash(struct device *d,
 450                                       struct device_attribute *attr,
 451                                       char *buf)
 452 {
 453         int count;
 454         struct bonding *bond = to_bond(d);
 455
 456         if ((bond->params.mode != BOND_MODE_XOR) &&
 457             (bond->params.mode != BOND_MODE_8023AD)) {
 458                 // Not Applicable
 459                 count = sprintf(buf, "NA\n") + 1;
 460         } else {
 461                 count = sprintf(buf, "%s %d\n",
 462                         xmit_hashtype_tbl[bond->params.xmit_policy].modename,
 463                         bond->params.xmit_policy) + 1;
 464         }
 465
 466         return count;
 467 }
 468
 469 static ssize_t bonding_store_xmit_hash(struct device *d,
 470                                        struct device_attribute *attr,
 471                                        const char *buf, size_t count)
 472 {
 473         int new_value, ret = count;
 474         struct bonding *bond = to_bond(d);
 475
 476         if (bond->dev->flags & IFF_UP) {
 477                 printk(KERN_ERR DRV_NAME
 478                        "%s: Interface is up. Unable to update xmit policy.\n",
 479                        bond->dev->name);
 480                 ret = -EPERM;
 481                 goto out;
 482         }
 483
 484         if ((bond->params.mode != BOND_MODE_XOR) &&
 485             (bond->params.mode != BOND_MODE_8023AD)) {
 486                 printk(KERN_ERR DRV_NAME
 487                        "%s: Transmit hash policy is irrelevant in this mode.\n",
 488                        bond->dev->name);
 489                 ret = -EPERM;
 490                 goto out;
 491         }
 492
 493         new_value = bond_parse_parm((char *)buf, xmit_hashtype_tbl);
 494         if (new_value < 0)  {
 495                 printk(KERN_ERR DRV_NAME
 496                        ": %s: Ignoring invalid xmit hash policy value %.*s.\n",
 497                        bond->dev->name,
 498                        (int)strlen(buf) - 1, buf);
 499                 ret = -EINVAL;
 500                 goto out;
 501         } else {
 502                 bond->params.xmit_policy = new_value;
 503                 bond_set_mode_ops(bond, bond->params.mode);
 504                 printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n",
 505                         bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value);
 506         }
 507 out:
 508         return ret;
 509 }
 510 static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash);
 511
 512 /*
 513  * Show and set arp_validate.
 514  */
 515 static ssize_t bonding_show_arp_validate(struct device *d,
 516                                          struct device_attribute *attr,
 517                                          char *buf)
 518 {
 519         struct bonding *bond = to_bond(d);
 520
 521         return sprintf(buf, "%s %d\n",
 522                        arp_validate_tbl[bond->params.arp_validate].modename,
 523                        bond->params.arp_validate) + 1;
 524 }
 525
 526 static ssize_t bonding_store_arp_validate(struct device *d,
 527                                           struct device_attribute *attr,
 528                                           const char *buf, size_t count)
 529 {
 530         int new_value;
 531         struct bonding *bond = to_bond(d);
 532
 533         new_value = bond_parse_parm((char *)buf, arp_validate_tbl);
 534         if (new_value < 0) {
 535                 printk(KERN_ERR DRV_NAME
 536                        ": %s: Ignoring invalid arp_validate value %s\n",
 537                        bond->dev->name, buf);
 538                 return -EINVAL;
 539         }
 540         if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) {
 541                 printk(KERN_ERR DRV_NAME
 542                        ": %s: arp_validate only supported in active-backup mode.\n",
 543                        bond->dev->name);
 544                 return -EINVAL;
 545         }
 546         printk(KERN_INFO DRV_NAME ": %s: setting arp_validate to %s (%d).\n",
 547                bond->dev->name, arp_validate_tbl[new_value].modename,
 548                new_value);
 549
 550         if (!bond->params.arp_validate && new_value) {
 551                 bond_register_arp(bond);
 552         } else if (bond->params.arp_validate && !new_value) {
 553                 bond_unregister_arp(bond);
 554         }
 555
 556         bond->params.arp_validate = new_value;
 557
 558         return count;
 559 }
 560
 561 static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate, bonding_store_arp_validate);
 562
 563 /*
 564  * Show and set the arp timer interval.  There are two tricky bits
 565  * here.  First, if ARP monitoring is activated, then we must disable
 566  * MII monitoring.  Second, if the ARP timer isn't running, we must
 567  * start it.
 568  */
 569 static ssize_t bonding_show_arp_interval(struct device *d,
 570                                          struct device_attribute *attr,
 571                                          char *buf)
 572 {
 573         struct bonding *bond = to_bond(d);
 574
 575         return sprintf(buf, "%d\n", bond->params.arp_interval) + 1;
 576 }
 577
 578 static ssize_t bonding_store_arp_interval(struct device *d,
 579                                           struct device_attribute *attr,
 580                                           const char *buf, size_t count)
 581 {
 582         int new_value, ret = count;
 583         struct bonding *bond = to_bond(d);
 584
 585         if (sscanf(buf, "%d", &new_value) != 1) {
 586                 printk(KERN_ERR DRV_NAME
 587                        ": %s: no arp_interval value specified.\n",
 588                        bond->dev->name);
 589                 ret = -EINVAL;
 590                 goto out;
 591         }
 592         if (new_value < 0) {
 593                 printk(KERN_ERR DRV_NAME
 594                        ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n",
 595                        bond->dev->name, new_value, INT_MAX);
 596                 ret = -EINVAL;
 597                 goto out;
 598         }
 599
 600         printk(KERN_INFO DRV_NAME
 601                ": %s: Setting ARP monitoring interval to %d.\n",
 602                bond->dev->name, new_value);
 603         bond->params.arp_interval = new_value;
 604         if (bond->params.miimon) {
 605                 printk(KERN_INFO DRV_NAME
 606                        ": %s: ARP monitoring cannot be used with MII monitoring. "
 607                        "%s Disabling MII monitoring.\n",
 608                        bond->dev->name, bond->dev->name);
 609                 bond->params.miimon = 0;
 610                 /* Kill MII timer, else it brings bond's link down */
 611                 if (bond->arp_timer.function) {
 612                         printk(KERN_INFO DRV_NAME
 613                         ": %s: Kill MII timer, else it brings bond's link down...\n",
 614                        bond->dev->name);
 615                         del_timer_sync(&bond->mii_timer);
 616                 }
 617         }
 618         if (!bond->params.arp_targets[0]) {
 619                 printk(KERN_INFO DRV_NAME
 620                        ": %s: ARP monitoring has been set up, "
 621                        "but no ARP targets have been specified.\n",
 622                        bond->dev->name);
 623         }
 624         if (bond->dev->flags & IFF_UP) {
 625                 /* If the interface is up, we may need to fire off
 626                  * the ARP timer.  If the interface is down, the
 627                  * timer will get fired off when the open function
 628                  * is called.
 629                  */
 630                 if (bond->arp_timer.function) {
 631                         /* The timer's already set up, so fire it off */
 632                         mod_timer(&bond->arp_timer, jiffies + 1);
 633                 } else {
 634                         /* Set up the timer. */
 635                         init_timer(&bond->arp_timer);
 636                         bond->arp_timer.expires = jiffies + 1;
 637                         bond->arp_timer.data =
 638                                 (unsigned long) bond->dev;
 639                         if (bond->params.mode == BOND_MODE_ACTIVEBACKUP) {
 640                                 bond->arp_timer.function =
 641                                         (void *)
 642                                         &bond_activebackup_arp_mon;
 643                         } else {
 644                                 bond->arp_timer.function =
 645                                         (void *)
 646                                         &bond_loadbalance_arp_mon;
 647                         }
 648                         add_timer(&bond->arp_timer);
 649                 }
 650         }
 651
 652 out:
 653         return ret;
 654 }
 655 static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR , bonding_show_arp_interval, bonding_store_arp_interval);
 656
 657 /*
 658  * Show and set the arp targets.
 659  */
 660 static ssize_t bonding_show_arp_targets(struct device *d,
 661                                         struct device_attribute *attr,
 662                                         char *buf)
 663 {
 664         int i, res = 0;
 665         struct bonding *bond = to_bond(d);
 666
 667         for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
 668                 if (bond->params.arp_targets[i])
 669                         res += sprintf(buf + res, "%u.%u.%u.%u ",
 670                                NIPQUAD(bond->params.arp_targets[i]));
 671         }
 672         if (res)
 673                 res--;  /* eat the leftover space */
 674         res += sprintf(buf + res, "\n");
 675         res++;
 676         return res;
 677 }
 678
 679 static ssize_t bonding_store_arp_targets(struct device *d,
 680                                          struct device_attribute *attr,
 681                                          const char *buf, size_t count)
 682 {
 683         __be32 newtarget;
 684         int i = 0, done = 0, ret = count;
 685         struct bonding *bond = to_bond(d);
 686         __be32 *targets;
 687
 688         targets = bond->params.arp_targets;
 689         newtarget = in_aton(buf + 1);
 690         /* look for adds */
 691         if (buf[0] == '+') {
 692                 if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) {
 693                         printk(KERN_ERR DRV_NAME
 694                                ": %s: invalid ARP target %u.%u.%u.%u specified for addition\n",
 695                                bond->dev->name, NIPQUAD(newtarget));
 696                         ret = -EINVAL;
 697                         goto out;
 698                 }
 699                 /* look for an empty slot to put the target in, and check for dupes */
 700                 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
 701                         if (targets[i] == newtarget) { /* duplicate */
 702                                 printk(KERN_ERR DRV_NAME
 703                                        ": %s: ARP target %u.%u.%u.%u is already present\n",
 704                                        bond->dev->name, NIPQUAD(newtarget));
 705                                 if (done)
 706                                         targets[i] = 0;
 707                                 ret = -EINVAL;
 708                                 goto out;
 709                         }
 710                         if (targets[i] == 0 && !done) {
 711                                 printk(KERN_INFO DRV_NAME
 712                                        ": %s: adding ARP target %d.%d.%d.%d.\n",
 713                                        bond->dev->name, NIPQUAD(newtarget));
 714                                 done = 1;
 715                                 targets[i] = newtarget;
 716                         }
 717                 }
 718                 if (!done) {
 719                         printk(KERN_ERR DRV_NAME
 720                                ": %s: ARP target table is full!\n",
 721                                bond->dev->name);
 722                         ret = -EINVAL;
 723                         goto out;
 724                 }
 725
 726         }
 727         else if (buf[0] == '-') {
 728                 if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) {
 729                         printk(KERN_ERR DRV_NAME
 730                                ": %s: invalid ARP target %d.%d.%d.%d specified for removal\n",
 731                                bond->dev->name, NIPQUAD(newtarget));
 732                         ret = -EINVAL;
 733                         goto out;
 734                 }
 735
 736                 for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
 737                         if (targets[i] == newtarget) {
 738                                 printk(KERN_INFO DRV_NAME
 739                                        ": %s: removing ARP target %d.%d.%d.%d.\n",
 740                                        bond->dev->name, NIPQUAD(newtarget));
 741                                 targets[i] = 0;
 742                                 done = 1;
 743                         }
 744                 }
 745                 if (!done) {
 746                         printk(KERN_INFO DRV_NAME
 747                                ": %s: unable to remove nonexistent ARP target %d.%d.%d.%d.\n",
 748                                bond->dev->name, NIPQUAD(newtarget));
 749                         ret = -EINVAL;
 750                         goto out;
 751                 }
 752         }
 753         else {
 754                 printk(KERN_ERR DRV_NAME ": no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n",
 755                         bond->dev->name);
 756                 ret = -EPERM;
 757                 goto out;
 758         }
 759
 760 out:
 761         return ret;
 762 }
 763 static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR , bonding_show_arp_targets, bonding_store_arp_targets);
 764
 765 /*
 766  * Show and set the up and down delays.  These must be multiples of the
 767  * MII monitoring value, and are stored internally as the multiplier.
 768  * Thus, we must translate to MS for the real world.
 769  */
 770 static ssize_t bonding_show_downdelay(struct device *d,
 771                                       struct device_attribute *attr,
 772                                       char *buf)
 773 {
 774         struct bonding *bond = to_bond(d);
 775
 776         return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon) + 1;
 777 }
 778
 779 static ssize_t bonding_store_downdelay(struct device *d,
 780                                        struct device_attribute *attr,
 781                                        const char *buf, size_t count)
 782 {
 783         int new_value, ret = count;
 784         struct bonding *bond = to_bond(d);
 785
 786         if (!(bond->params.miimon)) {
 787                 printk(KERN_ERR DRV_NAME
 788                        ": %s: Unable to set down delay as MII monitoring is disabled\n",
 789                        bond->dev->name);
 790                 ret = -EPERM;
 791                 goto out;
 792         }
 793
 794         if (sscanf(buf, "%d", &new_value) != 1) {
 795                 printk(KERN_ERR DRV_NAME
 796                        ": %s: no down delay value specified.\n",
 797                        bond->dev->name);
 798                 ret = -EINVAL;
 799                 goto out;
 800         }
 801         if (new_value < 0) {
 802                 printk(KERN_ERR DRV_NAME
 803                        ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n",
 804                        bond->dev->name, new_value, 1, INT_MAX);
 805                 ret = -EINVAL;
 806                 goto out;
 807         } else {
 808                 if ((new_value % bond->params.miimon) != 0) {
 809                         printk(KERN_WARNING DRV_NAME
 810                                ": %s: Warning: down delay (%d) is not a multiple "
 811                                "of miimon (%d), delay rounded to %d ms\n",
 812                                bond->dev->name, new_value, bond->params.miimon,
 813                                (new_value / bond->params.miimon) *
 814                                bond->params.miimon);
 815                 }
 816                 bond->params.downdelay = new_value / bond->params.miimon;
 817                 printk(KERN_INFO DRV_NAME ": %s: Setting down delay to %d.\n",
 818                        bond->dev->name, bond->params.downdelay * bond->params.miimon);
 819
 820         }
 821
 822 out:
 823         return ret;
 824 }
 825 static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay);
 826
 827 static ssize_t bonding_show_updelay(struct device *d,
 828                                     struct device_attribute *attr,
 829                                     char *buf)
 830 {
 831         struct bonding *bond = to_bond(d);
 832
 833         return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon) + 1;
 834
 835 }
 836
 837 static ssize_t bonding_store_updelay(struct device *d,
 838                                      struct device_attribute *attr,
 839                                      const char *buf, size_t count)
 840 {
 841         int new_value, ret = count;
 842         struct bonding *bond = to_bond(d);
 843
 844         if (!(bond->params.miimon)) {
 845                 printk(KERN_ERR DRV_NAME
 846                        ": %s: Unable to set up delay as MII monitoring is disabled\n",
 847                        bond->dev->name);
 848                 ret = -EPERM;
 849                 goto out;
 850         }
 851
 852         if (sscanf(buf, "%d", &new_value) != 1) {
 853                 printk(KERN_ERR DRV_NAME
 854                        ": %s: no up delay value specified.\n",
 855                        bond->dev->name);
 856                 ret = -EINVAL;
 857                 goto out;
 858         }
 859         if (new_value < 0) {
 860                 printk(KERN_ERR DRV_NAME
 861                        ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n",
 862                        bond->dev->name, new_value, 1, INT_MAX);
 863                 ret = -EINVAL;
 864                 goto out;
 865         } else {
 866                 if ((new_value % bond->params.miimon) != 0) {
 867                         printk(KERN_WARNING DRV_NAME
 868                                ": %s: Warning: up delay (%d) is not a multiple "
 869                                "of miimon (%d), updelay rounded to %d ms\n",
 870                                bond->dev->name, new_value, bond->params.miimon,
 871                                (new_value / bond->params.miimon) *
 872                                bond->params.miimon);
 873                 }
 874                 bond->params.updelay = new_value / bond->params.miimon;
 875                 printk(KERN_INFO DRV_NAME ": %s: Setting up delay to %d.\n",
 876                        bond->dev->name, bond->params.updelay * bond->params.miimon);
 877
 878         }
 879
 880 out:
 881         return ret;
 882 }
 883 static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR , bonding_show_updelay, bonding_store_updelay);
 884
 885 /*
 886  * Show and set the LACP interval.  Interface must be down, and the mode
 887  * must be set to 802.3ad mode.
 888  */
 889 static ssize_t bonding_show_lacp(struct device *d,
 890                                  struct device_attribute *attr,
 891                                  char *buf)
 892 {
 893         struct bonding *bond = to_bond(d);
 894
 895         return sprintf(buf, "%s %d\n",
 896                 bond_lacp_tbl[bond->params.lacp_fast].modename,
 897                 bond->params.lacp_fast) + 1;
 898 }
 899
 900 static ssize_t bonding_store_lacp(struct device *d,
 901                                   struct device_attribute *attr,
 902                                   const char *buf, size_t count)
 903 {
 904         int new_value, ret = count;
 905         struct bonding *bond = to_bond(d);
 906
 907         if (bond->dev->flags & IFF_UP) {
 908                 printk(KERN_ERR DRV_NAME
 909                        ": %s: Unable to update LACP rate because interface is up.\n",
 910                        bond->dev->name);
 911                 ret = -EPERM;
 912                 goto out;
 913         }
 914
 915         if (bond->params.mode != BOND_MODE_8023AD) {
 916                 printk(KERN_ERR DRV_NAME
 917                        ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n",
 918                        bond->dev->name);
 919                 ret = -EPERM;
 920                 goto out;
 921         }
 922
 923         new_value = bond_parse_parm((char *)buf, bond_lacp_tbl);
 924
 925         if ((new_value == 1) || (new_value == 0)) {
 926                 bond->params.lacp_fast = new_value;
 927                 printk(KERN_INFO DRV_NAME
 928                        ": %s: Setting LACP rate to %s (%d).\n",
 929                        bond->dev->name, bond_lacp_tbl[new_value].modename, new_value);
 930         } else {
 931                 printk(KERN_ERR DRV_NAME
 932                        ": %s: Ignoring invalid LACP rate value %.*s.\n",
 933                         bond->dev->name, (int)strlen(buf) - 1, buf);
 934                 ret = -EINVAL;
 935         }
 936 out:
 937         return ret;
 938 }
 939 static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp);
 940
 941 /*
 942  * Show and set the MII monitor interval.  There are two tricky bits
 943  * here.  First, if MII monitoring is activated, then we must disable
 944  * ARP monitoring.  Second, if the timer isn't running, we must
 945  * start it.
 946  */
 947 static ssize_t bonding_show_miimon(struct device *d,
 948                                    struct device_attribute *attr,
 949                                    char *buf)
 950 {
 951         struct bonding *bond = to_bond(d);
 952
 953         return sprintf(buf, "%d\n", bond->params.miimon) + 1;
 954 }
 955
 956 static ssize_t bonding_store_miimon(struct device *d,
 957                                     struct device_attribute *attr,
 958                                     const char *buf, size_t count)
 959 {
 960         int new_value, ret = count;
 961         struct bonding *bond = to_bond(d);
 962
 963         if (sscanf(buf, "%d", &new_value) != 1) {
 964                 printk(KERN_ERR DRV_NAME
 965                        ": %s: no miimon value specified.\n",
 966                        bond->dev->name);
 967                 ret = -EINVAL;
 968                 goto out;
 969         }
 970         if (new_value < 0) {
 971                 printk(KERN_ERR DRV_NAME
 972                        ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n",
 973                        bond->dev->name, new_value, 1, INT_MAX);
 974                 ret = -EINVAL;
 975                 goto out;
 976         } else {
 977                 printk(KERN_INFO DRV_NAME
 978                        ": %s: Setting MII monitoring interval to %d.\n",
 979                        bond->dev->name, new_value);
 980                 bond->params.miimon = new_value;
 981                 if(bond->params.updelay)
 982                         printk(KERN_INFO DRV_NAME
 983                               ": %s: Note: Updating updelay (to %d) "
 984                               "since it is a multiple of the miimon value.\n",
 985                               bond->dev->name,
 986                               bond->params.updelay * bond->params.miimon);
 987                 if(bond->params.downdelay)
 988                         printk(KERN_INFO DRV_NAME
 989                               ": %s: Note: Updating downdelay (to %d) "
 990                               "since it is a multiple of the miimon value.\n",
 991                               bond->dev->name,
 992                               bond->params.downdelay * bond->params.miimon);
 993                 if (bond->params.arp_interval) {
 994                         printk(KERN_INFO DRV_NAME
 995                                ": %s: MII monitoring cannot be used with "
 996                                "ARP monitoring. Disabling ARP monitoring...\n",
 997                                bond->dev->name);
 998                         bond->params.arp_interval = 0;
 999                         if (bond->params.arp_validate) {
1000                                 bond_unregister_arp(bond);
1001                                 bond->params.arp_validate =
1002                                         BOND_ARP_VALIDATE_NONE;
1003                         }
1004                         /* Kill ARP timer, else it brings bond's link down */
1005                         if (bond->mii_timer.function) {
1006                                 printk(KERN_INFO DRV_NAME
1007                                 ": %s: Kill ARP timer, else it brings bond's link down...\n",
1008                                bond->dev->name);
1009                                 del_timer_sync(&bond->arp_timer);
1010                         }
1011                 }
1012
1013                 if (bond->dev->flags & IFF_UP) {
1014                         /* If the interface is up, we may need to fire off
1015                          * the MII timer. If the interface is down, the
1016                          * timer will get fired off when the open function
1017                          * is called.
1018                          */
1019                         if (bond->mii_timer.function) {
1020                                 /* The timer's already set up, so fire it off */
1021                                 mod_timer(&bond->mii_timer, jiffies + 1);
1022                         } else {
1023                                 /* Set up the timer. */
1024                                 init_timer(&bond->mii_timer);
1025                                 bond->mii_timer.expires = jiffies + 1;
1026                                 bond->mii_timer.data =
1027                                         (unsigned long) bond->dev;
1028                                 bond->mii_timer.function =
1029                                         (void *) &bond_mii_monitor;
1030                                 add_timer(&bond->mii_timer);
1031                         }
1032                 }
1033         }
1034 out:
1035         return ret;
1036 }
1037 static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR, bonding_show_miimon, bonding_store_miimon);
1038
1039 /*
1040  * Show and set the primary slave.  The store function is much
1041  * simpler than bonding_store_slaves function because it only needs to
1042  * handle one interface name.
1043  * The bond must be a mode that supports a primary for this be
1044  * set.
1045  */
1046 static ssize_t bonding_show_primary(struct device *d,
1047                                     struct device_attribute *attr,
1048                                     char *buf)
1049 {
1050         int count = 0;
1051         struct bonding *bond = to_bond(d);
1052
1053         if (bond->primary_slave)
1054                 count = sprintf(buf, "%s\n", bond->primary_slave->dev->name) + 1;
1055         else
1056                 count = sprintf(buf, "\n") + 1;
1057
1058         return count;
1059 }
1060
1061 static ssize_t bonding_store_primary(struct device *d,
1062                                      struct device_attribute *attr,
1063                                      const char *buf, size_t count)
1064 {
1065         int i;
1066         struct slave *slave;
1067         struct bonding *bond = to_bond(d);
1068
1069         write_lock_bh(&bond->lock);
1070         if (!USES_PRIMARY(bond->params.mode)) {
1071                 printk(KERN_INFO DRV_NAME
1072                        ": %s: Unable to set primary slave; %s is in mode %d\n",
1073                        bond->dev->name, bond->dev->name, bond->params.mode);
1074         } else {
1075                 bond_for_each_slave(bond, slave, i) {
1076                         if (strnicmp
1077                             (slave->dev->name, buf,
1078                              strlen(slave->dev->name)) == 0) {
1079                                 printk(KERN_INFO DRV_NAME
1080                                        ": %s: Setting %s as primary slave.\n",
1081                                        bond->dev->name, slave->dev->name);
1082                                 bond->primary_slave = slave;
1083                                 bond_select_active_slave(bond);
1084                                 goto out;
1085                         }
1086                 }
1087
1088                 /* if we got here, then we didn't match the name of any slave */
1089
1090                 if (strlen(buf) == 0 || buf[0] == '\n') {
1091                         printk(KERN_INFO DRV_NAME
1092                                ": %s: Setting primary slave to None.\n",
1093                                bond->dev->name);
1094                         bond->primary_slave = NULL;
1095                                 bond_select_active_slave(bond);
1096                 } else {
1097                         printk(KERN_INFO DRV_NAME
1098                                ": %s: Unable to set %.*s as primary slave as it is not a slave.\n",
1099                                bond->dev->name, (int)strlen(buf) - 1, buf);
1100                 }
1101         }
1102 out:
1103         write_unlock_bh(&bond->lock);
1104         return count;
1105 }
1106 static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, bonding_show_primary, bonding_store_primary);
1107
1108 /*
1109  * Show and set the use_carrier flag.
1110  */
1111 static ssize_t bonding_show_carrier(struct device *d,
1112                                     struct device_attribute *attr,
1113                                     char *buf)
1114 {
1115         struct bonding *bond = to_bond(d);
1116
1117         return sprintf(buf, "%d\n", bond->params.use_carrier) + 1;
1118 }
1119
1120 static ssize_t bonding_store_carrier(struct device *d,
1121                                      struct device_attribute *attr,
1122                                      const char *buf, size_t count)
1123 {
1124         int new_value, ret = count;
1125         struct bonding *bond = to_bond(d);
1126
1127
1128         if (sscanf(buf, "%d", &new_value) != 1) {
1129                 printk(KERN_ERR DRV_NAME
1130                        ": %s: no use_carrier value specified.\n",
1131                        bond->dev->name);
1132                 ret = -EINVAL;
1133                 goto out;
1134         }
1135         if ((new_value == 0) || (new_value == 1)) {
1136                 bond->params.use_carrier = new_value;
1137                 printk(KERN_INFO DRV_NAME ": %s: Setting use_carrier to %d.\n",
1138                        bond->dev->name, new_value);
1139         } else {
1140                 printk(KERN_INFO DRV_NAME
1141                        ": %s: Ignoring invalid use_carrier value %d.\n",
1142                        bond->dev->name, new_value);
1143         }
1144 out:
1145         return count;
1146 }
1147 static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, bonding_show_carrier, bonding_store_carrier);
1148
1149
1150 /*
1151  * Show and set currently active_slave.
1152  */
1153 static ssize_t bonding_show_active_slave(struct device *d,
1154                                          struct device_attribute *attr,
1155                                          char *buf)
1156 {
1157         struct slave *curr;
1158         struct bonding *bond = to_bond(d);
1159         int count;
1160
1161
1162         read_lock(&bond->curr_slave_lock);
1163         curr = bond->curr_active_slave;
1164         read_unlock(&bond->curr_slave_lock);
1165
1166         if (USES_PRIMARY(bond->params.mode) && curr)
1167                 count = sprintf(buf, "%s\n", curr->dev->name) + 1;
1168         else
1169                 count = sprintf(buf, "\n") + 1;
1170         return count;
1171 }
1172
1173 static ssize_t bonding_store_active_slave(struct device *d,
1174                                           struct device_attribute *attr,
1175                                           const char *buf, size_t count)
1176 {
1177         int i;
1178         struct slave *slave;
1179         struct slave *old_active = NULL;
1180         struct slave *new_active = NULL;
1181         struct bonding *bond = to_bond(d);
1182
1183         write_lock_bh(&bond->lock);
1184         if (!USES_PRIMARY(bond->params.mode)) {
1185                 printk(KERN_INFO DRV_NAME
1186                        ": %s: Unable to change active slave; %s is in mode %d\n",
1187                        bond->dev->name, bond->dev->name, bond->params.mode);
1188         } else {
1189                 bond_for_each_slave(bond, slave, i) {
1190                         if (strnicmp
1191                             (slave->dev->name, buf,
1192                              strlen(slave->dev->name)) == 0) {
1193                                 old_active = bond->curr_active_slave;
1194                                 new_active = slave;
1195                                 if (new_active == old_active) {
1196                                         /* do nothing */
1197                                         printk(KERN_INFO DRV_NAME
1198                                                ": %s: %s is already the current active slave.\n",
1199                                                bond->dev->name, slave->dev->name);
1200                                         goto out;
1201                                 }
1202                                 else {
1203                                         if ((new_active) &&
1204                                             (old_active) &&
1205                                             (new_active->link == BOND_LINK_UP) &&
1206                                             IS_UP(new_active->dev)) {
1207                                                 printk(KERN_INFO DRV_NAME
1208                                                       ": %s: Setting %s as active slave.\n",
1209                                                       bond->dev->name, slave->dev->name);
1210                                                 bond_change_active_slave(bond, new_active);
1211                                         }
1212                                         else {
1213                                                 printk(KERN_INFO DRV_NAME
1214                                                       ": %s: Could not set %s as active slave; "
1215                                                       "either %s is down or the link is down.\n",
1216                                                       bond->dev->name, slave->dev->name,
1217                                                       slave->dev->name);
1218                                         }
1219                                         goto out;
1220                                 }
1221                         }
1222                 }
1223
1224                 /* if we got here, then we didn't match the name of any slave */
1225
1226                 if (strlen(buf) == 0 || buf[0] == '\n') {
1227                         printk(KERN_INFO DRV_NAME
1228                                ": %s: Setting active slave to None.\n",
1229                                bond->dev->name);
1230                         bond->primary_slave = NULL;
1231                                 bond_select_active_slave(bond);
1232                 } else {
1233                         printk(KERN_INFO DRV_NAME
1234                                ": %s: Unable to set %.*s as active slave as it is not a slave.\n",
1235                                bond->dev->name, (int)strlen(buf) - 1, buf);
1236                 }
1237         }
1238 out:
1239         write_unlock_bh(&bond->lock);
1240         return count;
1241
1242 }
1243 static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, bonding_show_active_slave, bonding_store_active_slave);
1244
1245
1246 /*
1247  * Show link status of the bond interface.
1248  */
1249 static ssize_t bonding_show_mii_status(struct device *d,
1250                                        struct device_attribute *attr,
1251                                        char *buf)
1252 {
1253         struct slave *curr;
1254         struct bonding *bond = to_bond(d);
1255
1256         read_lock(&bond->curr_slave_lock);
1257         curr = bond->curr_active_slave;
1258         read_unlock(&bond->curr_slave_lock);
1259
1260         return sprintf(buf, "%s\n", (curr) ? "up" : "down") + 1;
1261 }
1262 static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL);
1263
1264
1265 /*
1266  * Show current 802.3ad aggregator ID.
1267  */
1268 static ssize_t bonding_show_ad_aggregator(struct device *d,
1269                                           struct device_attribute *attr,
1270                                           char *buf)
1271 {
1272         int count = 0;
1273         struct bonding *bond = to_bond(d);
1274
1275         if (bond->params.mode == BOND_MODE_8023AD) {
1276                 struct ad_info ad_info;
1277                 count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ?  0 : ad_info.aggregator_id) + 1;
1278         }
1279         else
1280                 count = sprintf(buf, "\n") + 1;
1281
1282         return count;
1283 }
1284 static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL);
1285
1286
1287 /*
1288  * Show number of active 802.3ad ports.
1289  */
1290 static ssize_t bonding_show_ad_num_ports(struct device *d,
1291                                          struct device_attribute *attr,
1292                                          char *buf)
1293 {
1294         int count = 0;
1295         struct bonding *bond = to_bond(d);
1296
1297         if (bond->params.mode == BOND_MODE_8023AD) {
1298                 struct ad_info ad_info;
1299                 count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ?  0: ad_info.ports) + 1;
1300         }
1301         else
1302                 count = sprintf(buf, "\n") + 1;
1303
1304         return count;
1305 }
1306 static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL);
1307
1308
1309 /*
1310  * Show current 802.3ad actor key.
1311  */
1312 static ssize_t bonding_show_ad_actor_key(struct device *d,
1313                                          struct device_attribute *attr,
1314                                          char *buf)
1315 {
1316         int count = 0;
1317         struct bonding *bond = to_bond(d);
1318
1319         if (bond->params.mode == BOND_MODE_8023AD) {
1320                 struct ad_info ad_info;
1321                 count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ?  0 : ad_info.actor_key) + 1;
1322         }
1323         else
1324                 count = sprintf(buf, "\n") + 1;
1325
1326         return count;
1327 }
1328 static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL);
1329
1330
1331 /*
1332  * Show current 802.3ad partner key.
1333  */
1334 static ssize_t bonding_show_ad_partner_key(struct device *d,
1335                                            struct device_attribute *attr,
1336                                            char *buf)
1337 {
1338         int count = 0;
1339         struct bonding *bond = to_bond(d);
1340
1341         if (bond->params.mode == BOND_MODE_8023AD) {
1342                 struct ad_info ad_info;
1343                 count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ?  0 : ad_info.partner_key) + 1;
1344         }
1345         else
1346                 count = sprintf(buf, "\n") + 1;
1347
1348         return count;
1349 }
1350 static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL);
1351
1352
1353 /*
1354  * Show current 802.3ad partner mac.
1355  */
1356 static ssize_t bonding_show_ad_partner_mac(struct device *d,
1357                                            struct device_attribute *attr,
1358                                            char *buf)
1359 {
1360         int count = 0;
1361         struct bonding *bond = to_bond(d);
1362         DECLARE_MAC_BUF(mac);
1363
1364         if (bond->params.mode == BOND_MODE_8023AD) {
1365                 struct ad_info ad_info;
1366                 if (!bond_3ad_get_active_agg_info(bond, &ad_info)) {
1367                         count = sprintf(buf,"%s\n",
1368                                         print_mac(mac, ad_info.partner_system))
1369                                 + 1;
1370                 }
1371         }
1372         else
1373                 count = sprintf(buf, "\n") + 1;
1374
1375         return count;
1376 }
1377 static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL);
1378
1379
1380
1381 static struct attribute *per_bond_attrs[] = {
1382         &dev_attr_slaves.attr,
1383         &dev_attr_mode.attr,
1384         &dev_attr_arp_validate.attr,
1385         &dev_attr_arp_interval.attr,
1386         &dev_attr_arp_ip_target.attr,
1387         &dev_attr_downdelay.attr,
1388         &dev_attr_updelay.attr,
1389         &dev_attr_lacp_rate.attr,
1390         &dev_attr_xmit_hash_policy.attr,
1391         &dev_attr_miimon.attr,
1392         &dev_attr_primary.attr,
1393         &dev_attr_use_carrier.attr,
1394         &dev_attr_active_slave.attr,
1395         &dev_attr_mii_status.attr,
1396         &dev_attr_ad_aggregator.attr,
1397         &dev_attr_ad_num_ports.attr,
1398         &dev_attr_ad_actor_key.attr,
1399         &dev_attr_ad_partner_key.attr,
1400         &dev_attr_ad_partner_mac.attr,
1401         NULL,
1402 };
1403
1404 static struct attribute_group bonding_group = {
1405         .name = "bonding",
1406         .attrs = per_bond_attrs,
1407 };
1408
1409 /*
1410  * Initialize sysfs.  This sets up the bonding_masters file in
1411  * /sys/class/net.
1412  */
1413 int bond_create_sysfs(void)
1414 {
1415         int ret = 0;
1416         struct bonding *firstbond;
1417
1418         init_rwsem(&bonding_rwsem);
1419
1420         /* get the netdev class pointer */
1421         firstbond = container_of(bond_dev_list.next, struct bonding, bond_list);
1422         if (!firstbond)
1423                 return -ENODEV;
1424
1425         netdev_class = firstbond->dev->dev.class;
1426         if (!netdev_class)
1427                 return -ENODEV;
1428
1429         ret = class_create_file(netdev_class, &class_attr_bonding_masters);
1430         /*
1431          * Permit multiple loads of the module by ignoring failures to
1432          * create the bonding_masters sysfs file.  Bonding devices
1433          * created by second or subsequent loads of the module will
1434          * not be listed in, or controllable by, bonding_masters, but
1435          * will have the usual "bonding" sysfs directory.
1436          *
1437          * This is done to preserve backwards compatibility for
1438          * initscripts/sysconfig, which load bonding multiple times to
1439          * configure multiple bonding devices.
1440          */
1441         if (ret == -EEXIST) {
1442                 netdev_class = NULL;
1443                 return 0;
1444         }
1445
1446         return ret;
1447
1448 }
1449
1450 /*
1451  * Remove /sys/class/net/bonding_masters.
1452  */
1453 void bond_destroy_sysfs(void)
1454 {
1455         if (netdev_class)
1456                 class_remove_file(netdev_class, &class_attr_bonding_masters);
1457 }
1458
1459 /*
1460  * Initialize sysfs for each bond.  This sets up and registers
1461  * the 'bondctl' directory for each individual bond under /sys/class/net.
1462  */
1463 int bond_create_sysfs_entry(struct bonding *bond)
1464 {
1465         struct net_device *dev = bond->dev;
1466         int err;
1467
1468         err = sysfs_create_group(&(dev->dev.kobj), &bonding_group);
1469         if (err) {
1470                 printk(KERN_EMERG "eek! didn't create group!\n");
1471         }
1472
1473         if (expected_refcount < 1)
1474                 expected_refcount = atomic_read(&bond->dev->dev.kobj.kref.refcount);
1475
1476         return err;
1477 }
1478 /*
1479  * Remove sysfs entries for each bond.
1480  */
1481 void bond_destroy_sysfs_entry(struct bonding *bond)
1482 {
1483         struct net_device *dev = bond->dev;
1484
1485         sysfs_remove_group(&(dev->dev.kobj), &bonding_group);
1486 }
1487