drivers/net/bonding/bond_sysfs.c

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