1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright(c) 2004-2005 Intel Corporation. All rights reserved. 4 */ 5 6 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 7 8 #include <linux/kernel.h> 9 #include <linux/module.h> 10 #include <linux/device.h> 11 #include <linux/sched/signal.h> 12 #include <linux/fs.h> 13 #include <linux/types.h> 14 #include <linux/string.h> 15 #include <linux/netdevice.h> 16 #include <linux/inetdevice.h> 17 #include <linux/in.h> 18 #include <linux/sysfs.h> 19 #include <linux/ctype.h> 20 #include <linux/inet.h> 21 #include <linux/rtnetlink.h> 22 #include <linux/etherdevice.h> 23 #include <net/net_namespace.h> 24 #include <net/netns/generic.h> 25 #include <linux/nsproxy.h> 26 27 #include <net/bonding.h> 28 29 #define to_bond(cd) ((struct bonding *)(netdev_priv(to_net_dev(cd)))) 30 31 /* "show" function for the bond_masters attribute. 32 * The class parameter is ignored. 33 */ 34 static ssize_t bonding_show_bonds(struct class *cls, 35 struct class_attribute *attr, 36 char *buf) 37 { 38 struct bond_net *bn = 39 container_of(attr, struct bond_net, class_attr_bonding_masters); 40 int res = 0; 41 struct bonding *bond; 42 43 rtnl_lock(); 44 45 list_for_each_entry(bond, &bn->dev_list, bond_list) { 46 if (res > (PAGE_SIZE - IFNAMSIZ)) { 47 /* not enough space for another interface name */ 48 if ((PAGE_SIZE - res) > 10) 49 res = PAGE_SIZE - 10; 50 res += sprintf(buf + res, "++more++ "); 51 break; 52 } 53 res += sprintf(buf + res, "%s ", bond->dev->name); 54 } 55 if (res) 56 buf[res-1] = '\n'; /* eat the leftover space */ 57 58 rtnl_unlock(); 59 return res; 60 } 61 62 static struct net_device *bond_get_by_name(struct bond_net *bn, const char *ifname) 63 { 64 struct bonding *bond; 65 66 list_for_each_entry(bond, &bn->dev_list, bond_list) { 67 if (strncmp(bond->dev->name, ifname, IFNAMSIZ) == 0) 68 return bond->dev; 69 } 70 return NULL; 71 } 72 73 /* "store" function for the bond_masters attribute. This is what 74 * creates and deletes entire bonds. 75 * 76 * The class parameter is ignored. 77 */ 78 static ssize_t bonding_store_bonds(struct class *cls, 79 struct class_attribute *attr, 80 const char *buffer, size_t count) 81 { 82 struct bond_net *bn = 83 container_of(attr, struct bond_net, class_attr_bonding_masters); 84 char command[IFNAMSIZ + 1] = {0, }; 85 char *ifname; 86 int rv, res = count; 87 88 sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ 89 ifname = command + 1; 90 if ((strlen(command) <= 1) || 91 !dev_valid_name(ifname)) 92 goto err_no_cmd; 93 94 if (command[0] == '+') { 95 pr_info("%s is being created...\n", ifname); 96 rv = bond_create(bn->net, ifname); 97 if (rv) { 98 if (rv == -EEXIST) 99 pr_info("%s already exists\n", ifname); 100 else 101 pr_info("%s creation failed\n", ifname); 102 res = rv; 103 } 104 } else if (command[0] == '-') { 105 struct net_device *bond_dev; 106 107 rtnl_lock(); 108 bond_dev = bond_get_by_name(bn, ifname); 109 if (bond_dev) { 110 pr_info("%s is being deleted...\n", ifname); 111 unregister_netdevice(bond_dev); 112 } else { 113 pr_err("unable to delete non-existent %s\n", ifname); 114 res = -ENODEV; 115 } 116 rtnl_unlock(); 117 } else 118 goto err_no_cmd; 119 120 /* Always return either count or an error. If you return 0, you'll 121 * get called forever, which is bad. 122 */ 123 return res; 124 125 err_no_cmd: 126 pr_err("no command found in bonding_masters - use +ifname or -ifname\n"); 127 return -EPERM; 128 } 129 130 /* class attribute for bond_masters file. This ends up in /sys/class/net */ 131 static const struct class_attribute class_attr_bonding_masters = { 132 .attr = { 133 .name = "bonding_masters", 134 .mode = 0644, 135 }, 136 .show = bonding_show_bonds, 137 .store = bonding_store_bonds, 138 }; 139 140 /* Generic "store" method for bonding sysfs option setting */ 141 static ssize_t bonding_sysfs_store_option(struct device *d, 142 struct device_attribute *attr, 143 const char *buffer, size_t count) 144 { 145 struct bonding *bond = to_bond(d); 146 const struct bond_option *opt; 147 char *buffer_clone; 148 int ret; 149 150 opt = bond_opt_get_by_name(attr->attr.name); 151 if (WARN_ON(!opt)) 152 return -ENOENT; 153 buffer_clone = kstrndup(buffer, count, GFP_KERNEL); 154 if (!buffer_clone) 155 return -ENOMEM; 156 ret = bond_opt_tryset_rtnl(bond, opt->id, buffer_clone); 157 if (!ret) 158 ret = count; 159 kfree(buffer_clone); 160 161 return ret; 162 } 163 164 /* Show the slaves in the current bond. */ 165 static ssize_t bonding_show_slaves(struct device *d, 166 struct device_attribute *attr, char *buf) 167 { 168 struct bonding *bond = to_bond(d); 169 struct list_head *iter; 170 struct slave *slave; 171 int res = 0; 172 173 if (!rtnl_trylock()) 174 return restart_syscall(); 175 176 bond_for_each_slave(bond, slave, iter) { 177 if (res > (PAGE_SIZE - IFNAMSIZ)) { 178 /* not enough space for another interface name */ 179 if ((PAGE_SIZE - res) > 10) 180 res = PAGE_SIZE - 10; 181 res += sprintf(buf + res, "++more++ "); 182 break; 183 } 184 res += sprintf(buf + res, "%s ", slave->dev->name); 185 } 186 187 rtnl_unlock(); 188 189 if (res) 190 buf[res-1] = '\n'; /* eat the leftover space */ 191 192 return res; 193 } 194 static DEVICE_ATTR(slaves, 0644, bonding_show_slaves, 195 bonding_sysfs_store_option); 196 197 /* Show the bonding mode. */ 198 static ssize_t bonding_show_mode(struct device *d, 199 struct device_attribute *attr, char *buf) 200 { 201 struct bonding *bond = to_bond(d); 202 const struct bond_opt_value *val; 203 204 val = bond_opt_get_val(BOND_OPT_MODE, BOND_MODE(bond)); 205 206 return sprintf(buf, "%s %d\n", val->string, BOND_MODE(bond)); 207 } 208 static DEVICE_ATTR(mode, 0644, bonding_show_mode, bonding_sysfs_store_option); 209 210 /* Show the bonding transmit hash method. */ 211 static ssize_t bonding_show_xmit_hash(struct device *d, 212 struct device_attribute *attr, 213 char *buf) 214 { 215 struct bonding *bond = to_bond(d); 216 const struct bond_opt_value *val; 217 218 val = bond_opt_get_val(BOND_OPT_XMIT_HASH, bond->params.xmit_policy); 219 220 return sprintf(buf, "%s %d\n", val->string, bond->params.xmit_policy); 221 } 222 static DEVICE_ATTR(xmit_hash_policy, 0644, 223 bonding_show_xmit_hash, bonding_sysfs_store_option); 224 225 /* Show arp_validate. */ 226 static ssize_t bonding_show_arp_validate(struct device *d, 227 struct device_attribute *attr, 228 char *buf) 229 { 230 struct bonding *bond = to_bond(d); 231 const struct bond_opt_value *val; 232 233 val = bond_opt_get_val(BOND_OPT_ARP_VALIDATE, 234 bond->params.arp_validate); 235 236 return sprintf(buf, "%s %d\n", val->string, bond->params.arp_validate); 237 } 238 static DEVICE_ATTR(arp_validate, 0644, bonding_show_arp_validate, 239 bonding_sysfs_store_option); 240 241 /* Show arp_all_targets. */ 242 static ssize_t bonding_show_arp_all_targets(struct device *d, 243 struct device_attribute *attr, 244 char *buf) 245 { 246 struct bonding *bond = to_bond(d); 247 const struct bond_opt_value *val; 248 249 val = bond_opt_get_val(BOND_OPT_ARP_ALL_TARGETS, 250 bond->params.arp_all_targets); 251 return sprintf(buf, "%s %d\n", 252 val->string, bond->params.arp_all_targets); 253 } 254 static DEVICE_ATTR(arp_all_targets, 0644, 255 bonding_show_arp_all_targets, bonding_sysfs_store_option); 256 257 /* Show fail_over_mac. */ 258 static ssize_t bonding_show_fail_over_mac(struct device *d, 259 struct device_attribute *attr, 260 char *buf) 261 { 262 struct bonding *bond = to_bond(d); 263 const struct bond_opt_value *val; 264 265 val = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC, 266 bond->params.fail_over_mac); 267 268 return sprintf(buf, "%s %d\n", val->string, bond->params.fail_over_mac); 269 } 270 static DEVICE_ATTR(fail_over_mac, 0644, 271 bonding_show_fail_over_mac, bonding_sysfs_store_option); 272 273 /* Show the arp timer interval. */ 274 static ssize_t bonding_show_arp_interval(struct device *d, 275 struct device_attribute *attr, 276 char *buf) 277 { 278 struct bonding *bond = to_bond(d); 279 280 return sprintf(buf, "%d\n", bond->params.arp_interval); 281 } 282 static DEVICE_ATTR(arp_interval, 0644, 283 bonding_show_arp_interval, bonding_sysfs_store_option); 284 285 /* Show the arp targets. */ 286 static ssize_t bonding_show_arp_targets(struct device *d, 287 struct device_attribute *attr, 288 char *buf) 289 { 290 struct bonding *bond = to_bond(d); 291 int i, res = 0; 292 293 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { 294 if (bond->params.arp_targets[i]) 295 res += sprintf(buf + res, "%pI4 ", 296 &bond->params.arp_targets[i]); 297 } 298 if (res) 299 buf[res-1] = '\n'; /* eat the leftover space */ 300 301 return res; 302 } 303 static DEVICE_ATTR(arp_ip_target, 0644, 304 bonding_show_arp_targets, bonding_sysfs_store_option); 305 306 /* Show the up and down delays. */ 307 static ssize_t bonding_show_downdelay(struct device *d, 308 struct device_attribute *attr, 309 char *buf) 310 { 311 struct bonding *bond = to_bond(d); 312 313 return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon); 314 } 315 static DEVICE_ATTR(downdelay, 0644, 316 bonding_show_downdelay, bonding_sysfs_store_option); 317 318 static ssize_t bonding_show_updelay(struct device *d, 319 struct device_attribute *attr, 320 char *buf) 321 { 322 struct bonding *bond = to_bond(d); 323 324 return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon); 325 326 } 327 static DEVICE_ATTR(updelay, 0644, 328 bonding_show_updelay, bonding_sysfs_store_option); 329 330 /* Show the LACP interval. */ 331 static ssize_t bonding_show_lacp(struct device *d, 332 struct device_attribute *attr, 333 char *buf) 334 { 335 struct bonding *bond = to_bond(d); 336 const struct bond_opt_value *val; 337 338 val = bond_opt_get_val(BOND_OPT_LACP_RATE, bond->params.lacp_fast); 339 340 return sprintf(buf, "%s %d\n", val->string, bond->params.lacp_fast); 341 } 342 static DEVICE_ATTR(lacp_rate, 0644, 343 bonding_show_lacp, bonding_sysfs_store_option); 344 345 static ssize_t bonding_show_min_links(struct device *d, 346 struct device_attribute *attr, 347 char *buf) 348 { 349 struct bonding *bond = to_bond(d); 350 351 return sprintf(buf, "%u\n", bond->params.min_links); 352 } 353 static DEVICE_ATTR(min_links, 0644, 354 bonding_show_min_links, bonding_sysfs_store_option); 355 356 static ssize_t bonding_show_ad_select(struct device *d, 357 struct device_attribute *attr, 358 char *buf) 359 { 360 struct bonding *bond = to_bond(d); 361 const struct bond_opt_value *val; 362 363 val = bond_opt_get_val(BOND_OPT_AD_SELECT, bond->params.ad_select); 364 365 return sprintf(buf, "%s %d\n", val->string, bond->params.ad_select); 366 } 367 static DEVICE_ATTR(ad_select, 0644, 368 bonding_show_ad_select, bonding_sysfs_store_option); 369 370 /* Show the number of peer notifications to send after a failover event. */ 371 static ssize_t bonding_show_num_peer_notif(struct device *d, 372 struct device_attribute *attr, 373 char *buf) 374 { 375 struct bonding *bond = to_bond(d); 376 return sprintf(buf, "%d\n", bond->params.num_peer_notif); 377 } 378 static DEVICE_ATTR(num_grat_arp, 0644, 379 bonding_show_num_peer_notif, bonding_sysfs_store_option); 380 static DEVICE_ATTR(num_unsol_na, 0644, 381 bonding_show_num_peer_notif, bonding_sysfs_store_option); 382 383 /* Show the MII monitor interval. */ 384 static ssize_t bonding_show_miimon(struct device *d, 385 struct device_attribute *attr, 386 char *buf) 387 { 388 struct bonding *bond = to_bond(d); 389 390 return sprintf(buf, "%d\n", bond->params.miimon); 391 } 392 static DEVICE_ATTR(miimon, 0644, 393 bonding_show_miimon, bonding_sysfs_store_option); 394 395 /* Show the primary slave. */ 396 static ssize_t bonding_show_primary(struct device *d, 397 struct device_attribute *attr, 398 char *buf) 399 { 400 struct bonding *bond = to_bond(d); 401 struct slave *primary; 402 int count = 0; 403 404 rcu_read_lock(); 405 primary = rcu_dereference(bond->primary_slave); 406 if (primary) 407 count = sprintf(buf, "%s\n", primary->dev->name); 408 rcu_read_unlock(); 409 410 return count; 411 } 412 static DEVICE_ATTR(primary, 0644, 413 bonding_show_primary, bonding_sysfs_store_option); 414 415 /* Show the primary_reselect flag. */ 416 static ssize_t bonding_show_primary_reselect(struct device *d, 417 struct device_attribute *attr, 418 char *buf) 419 { 420 struct bonding *bond = to_bond(d); 421 const struct bond_opt_value *val; 422 423 val = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT, 424 bond->params.primary_reselect); 425 426 return sprintf(buf, "%s %d\n", 427 val->string, bond->params.primary_reselect); 428 } 429 static DEVICE_ATTR(primary_reselect, 0644, 430 bonding_show_primary_reselect, bonding_sysfs_store_option); 431 432 /* Show the use_carrier flag. */ 433 static ssize_t bonding_show_carrier(struct device *d, 434 struct device_attribute *attr, 435 char *buf) 436 { 437 struct bonding *bond = to_bond(d); 438 439 return sprintf(buf, "%d\n", bond->params.use_carrier); 440 } 441 static DEVICE_ATTR(use_carrier, 0644, 442 bonding_show_carrier, bonding_sysfs_store_option); 443 444 445 /* Show currently active_slave. */ 446 static ssize_t bonding_show_active_slave(struct device *d, 447 struct device_attribute *attr, 448 char *buf) 449 { 450 struct bonding *bond = to_bond(d); 451 struct net_device *slave_dev; 452 int count = 0; 453 454 rcu_read_lock(); 455 slave_dev = bond_option_active_slave_get_rcu(bond); 456 if (slave_dev) 457 count = sprintf(buf, "%s\n", slave_dev->name); 458 rcu_read_unlock(); 459 460 return count; 461 } 462 static DEVICE_ATTR(active_slave, 0644, 463 bonding_show_active_slave, bonding_sysfs_store_option); 464 465 /* Show link status of the bond interface. */ 466 static ssize_t bonding_show_mii_status(struct device *d, 467 struct device_attribute *attr, 468 char *buf) 469 { 470 struct bonding *bond = to_bond(d); 471 bool active = netif_carrier_ok(bond->dev); 472 473 return sprintf(buf, "%s\n", active ? "up" : "down"); 474 } 475 static DEVICE_ATTR(mii_status, 0444, bonding_show_mii_status, NULL); 476 477 /* Show current 802.3ad aggregator ID. */ 478 static ssize_t bonding_show_ad_aggregator(struct device *d, 479 struct device_attribute *attr, 480 char *buf) 481 { 482 int count = 0; 483 struct bonding *bond = to_bond(d); 484 485 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 486 struct ad_info ad_info; 487 count = sprintf(buf, "%d\n", 488 bond_3ad_get_active_agg_info(bond, &ad_info) 489 ? 0 : ad_info.aggregator_id); 490 } 491 492 return count; 493 } 494 static DEVICE_ATTR(ad_aggregator, 0444, bonding_show_ad_aggregator, NULL); 495 496 497 /* Show number of active 802.3ad ports. */ 498 static ssize_t bonding_show_ad_num_ports(struct device *d, 499 struct device_attribute *attr, 500 char *buf) 501 { 502 int count = 0; 503 struct bonding *bond = to_bond(d); 504 505 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 506 struct ad_info ad_info; 507 count = sprintf(buf, "%d\n", 508 bond_3ad_get_active_agg_info(bond, &ad_info) 509 ? 0 : ad_info.ports); 510 } 511 512 return count; 513 } 514 static DEVICE_ATTR(ad_num_ports, 0444, bonding_show_ad_num_ports, NULL); 515 516 517 /* Show current 802.3ad actor key. */ 518 static ssize_t bonding_show_ad_actor_key(struct device *d, 519 struct device_attribute *attr, 520 char *buf) 521 { 522 int count = 0; 523 struct bonding *bond = to_bond(d); 524 525 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { 526 struct ad_info ad_info; 527 count = sprintf(buf, "%d\n", 528 bond_3ad_get_active_agg_info(bond, &ad_info) 529 ? 0 : ad_info.actor_key); 530 } 531 532 return count; 533 } 534 static DEVICE_ATTR(ad_actor_key, 0444, bonding_show_ad_actor_key, NULL); 535 536 537 /* Show current 802.3ad partner key. */ 538 static ssize_t bonding_show_ad_partner_key(struct device *d, 539 struct device_attribute *attr, 540 char *buf) 541 { 542 int count = 0; 543 struct bonding *bond = to_bond(d); 544 545 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { 546 struct ad_info ad_info; 547 count = sprintf(buf, "%d\n", 548 bond_3ad_get_active_agg_info(bond, &ad_info) 549 ? 0 : ad_info.partner_key); 550 } 551 552 return count; 553 } 554 static DEVICE_ATTR(ad_partner_key, 0444, bonding_show_ad_partner_key, NULL); 555 556 557 /* Show current 802.3ad partner mac. */ 558 static ssize_t bonding_show_ad_partner_mac(struct device *d, 559 struct device_attribute *attr, 560 char *buf) 561 { 562 int count = 0; 563 struct bonding *bond = to_bond(d); 564 565 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { 566 struct ad_info ad_info; 567 if (!bond_3ad_get_active_agg_info(bond, &ad_info)) 568 count = sprintf(buf, "%pM\n", ad_info.partner_system); 569 } 570 571 return count; 572 } 573 static DEVICE_ATTR(ad_partner_mac, 0444, bonding_show_ad_partner_mac, NULL); 574 575 /* Show the queue_ids of the slaves in the current bond. */ 576 static ssize_t bonding_show_queue_id(struct device *d, 577 struct device_attribute *attr, 578 char *buf) 579 { 580 struct bonding *bond = to_bond(d); 581 struct list_head *iter; 582 struct slave *slave; 583 int res = 0; 584 585 if (!rtnl_trylock()) 586 return restart_syscall(); 587 588 bond_for_each_slave(bond, slave, iter) { 589 if (res > (PAGE_SIZE - IFNAMSIZ - 6)) { 590 /* not enough space for another interface_name:queue_id pair */ 591 if ((PAGE_SIZE - res) > 10) 592 res = PAGE_SIZE - 10; 593 res += sprintf(buf + res, "++more++ "); 594 break; 595 } 596 res += sprintf(buf + res, "%s:%d ", 597 slave->dev->name, slave->queue_id); 598 } 599 if (res) 600 buf[res-1] = '\n'; /* eat the leftover space */ 601 602 rtnl_unlock(); 603 604 return res; 605 } 606 static DEVICE_ATTR(queue_id, 0644, bonding_show_queue_id, 607 bonding_sysfs_store_option); 608 609 610 /* Show the all_slaves_active flag. */ 611 static ssize_t bonding_show_slaves_active(struct device *d, 612 struct device_attribute *attr, 613 char *buf) 614 { 615 struct bonding *bond = to_bond(d); 616 617 return sprintf(buf, "%d\n", bond->params.all_slaves_active); 618 } 619 static DEVICE_ATTR(all_slaves_active, 0644, 620 bonding_show_slaves_active, bonding_sysfs_store_option); 621 622 /* Show the number of IGMP membership reports to send on link failure */ 623 static ssize_t bonding_show_resend_igmp(struct device *d, 624 struct device_attribute *attr, 625 char *buf) 626 { 627 struct bonding *bond = to_bond(d); 628 629 return sprintf(buf, "%d\n", bond->params.resend_igmp); 630 } 631 static DEVICE_ATTR(resend_igmp, 0644, 632 bonding_show_resend_igmp, bonding_sysfs_store_option); 633 634 635 static ssize_t bonding_show_lp_interval(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.lp_interval); 642 } 643 static DEVICE_ATTR(lp_interval, 0644, 644 bonding_show_lp_interval, bonding_sysfs_store_option); 645 646 static ssize_t bonding_show_tlb_dynamic_lb(struct device *d, 647 struct device_attribute *attr, 648 char *buf) 649 { 650 struct bonding *bond = to_bond(d); 651 return sprintf(buf, "%d\n", bond->params.tlb_dynamic_lb); 652 } 653 static DEVICE_ATTR(tlb_dynamic_lb, 0644, 654 bonding_show_tlb_dynamic_lb, bonding_sysfs_store_option); 655 656 static ssize_t bonding_show_packets_per_slave(struct device *d, 657 struct device_attribute *attr, 658 char *buf) 659 { 660 struct bonding *bond = to_bond(d); 661 unsigned int packets_per_slave = bond->params.packets_per_slave; 662 663 return sprintf(buf, "%u\n", packets_per_slave); 664 } 665 static DEVICE_ATTR(packets_per_slave, 0644, 666 bonding_show_packets_per_slave, bonding_sysfs_store_option); 667 668 static ssize_t bonding_show_ad_actor_sys_prio(struct device *d, 669 struct device_attribute *attr, 670 char *buf) 671 { 672 struct bonding *bond = to_bond(d); 673 674 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) 675 return sprintf(buf, "%hu\n", bond->params.ad_actor_sys_prio); 676 677 return 0; 678 } 679 static DEVICE_ATTR(ad_actor_sys_prio, 0644, 680 bonding_show_ad_actor_sys_prio, bonding_sysfs_store_option); 681 682 static ssize_t bonding_show_ad_actor_system(struct device *d, 683 struct device_attribute *attr, 684 char *buf) 685 { 686 struct bonding *bond = to_bond(d); 687 688 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) 689 return sprintf(buf, "%pM\n", bond->params.ad_actor_system); 690 691 return 0; 692 } 693 694 static DEVICE_ATTR(ad_actor_system, 0644, 695 bonding_show_ad_actor_system, bonding_sysfs_store_option); 696 697 static ssize_t bonding_show_ad_user_port_key(struct device *d, 698 struct device_attribute *attr, 699 char *buf) 700 { 701 struct bonding *bond = to_bond(d); 702 703 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) 704 return sprintf(buf, "%hu\n", bond->params.ad_user_port_key); 705 706 return 0; 707 } 708 static DEVICE_ATTR(ad_user_port_key, 0644, 709 bonding_show_ad_user_port_key, bonding_sysfs_store_option); 710 711 static struct attribute *per_bond_attrs[] = { 712 &dev_attr_slaves.attr, 713 &dev_attr_mode.attr, 714 &dev_attr_fail_over_mac.attr, 715 &dev_attr_arp_validate.attr, 716 &dev_attr_arp_all_targets.attr, 717 &dev_attr_arp_interval.attr, 718 &dev_attr_arp_ip_target.attr, 719 &dev_attr_downdelay.attr, 720 &dev_attr_updelay.attr, 721 &dev_attr_lacp_rate.attr, 722 &dev_attr_ad_select.attr, 723 &dev_attr_xmit_hash_policy.attr, 724 &dev_attr_num_grat_arp.attr, 725 &dev_attr_num_unsol_na.attr, 726 &dev_attr_miimon.attr, 727 &dev_attr_primary.attr, 728 &dev_attr_primary_reselect.attr, 729 &dev_attr_use_carrier.attr, 730 &dev_attr_active_slave.attr, 731 &dev_attr_mii_status.attr, 732 &dev_attr_ad_aggregator.attr, 733 &dev_attr_ad_num_ports.attr, 734 &dev_attr_ad_actor_key.attr, 735 &dev_attr_ad_partner_key.attr, 736 &dev_attr_ad_partner_mac.attr, 737 &dev_attr_queue_id.attr, 738 &dev_attr_all_slaves_active.attr, 739 &dev_attr_resend_igmp.attr, 740 &dev_attr_min_links.attr, 741 &dev_attr_lp_interval.attr, 742 &dev_attr_packets_per_slave.attr, 743 &dev_attr_tlb_dynamic_lb.attr, 744 &dev_attr_ad_actor_sys_prio.attr, 745 &dev_attr_ad_actor_system.attr, 746 &dev_attr_ad_user_port_key.attr, 747 NULL, 748 }; 749 750 static const struct attribute_group bonding_group = { 751 .name = "bonding", 752 .attrs = per_bond_attrs, 753 }; 754 755 /* Initialize sysfs. This sets up the bonding_masters file in 756 * /sys/class/net. 757 */ 758 int bond_create_sysfs(struct bond_net *bn) 759 { 760 int ret; 761 762 bn->class_attr_bonding_masters = class_attr_bonding_masters; 763 sysfs_attr_init(&bn->class_attr_bonding_masters.attr); 764 765 ret = netdev_class_create_file_ns(&bn->class_attr_bonding_masters, 766 bn->net); 767 /* Permit multiple loads of the module by ignoring failures to 768 * create the bonding_masters sysfs file. Bonding devices 769 * created by second or subsequent loads of the module will 770 * not be listed in, or controllable by, bonding_masters, but 771 * will have the usual "bonding" sysfs directory. 772 * 773 * This is done to preserve backwards compatibility for 774 * initscripts/sysconfig, which load bonding multiple times to 775 * configure multiple bonding devices. 776 */ 777 if (ret == -EEXIST) { 778 /* Is someone being kinky and naming a device bonding_master? */ 779 if (__dev_get_by_name(bn->net, 780 class_attr_bonding_masters.attr.name)) 781 pr_err("network device named %s already exists in sysfs\n", 782 class_attr_bonding_masters.attr.name); 783 ret = 0; 784 } 785 786 return ret; 787 788 } 789 790 /* Remove /sys/class/net/bonding_masters. */ 791 void bond_destroy_sysfs(struct bond_net *bn) 792 { 793 netdev_class_remove_file_ns(&bn->class_attr_bonding_masters, bn->net); 794 } 795 796 /* Initialize sysfs for each bond. This sets up and registers 797 * the 'bondctl' directory for each individual bond under /sys/class/net. 798 */ 799 void bond_prepare_sysfs_group(struct bonding *bond) 800 { 801 bond->dev->sysfs_groups[0] = &bonding_group; 802 } 803 804