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 static ssize_t bonding_show_peer_notif_delay(struct device *d, 331 struct device_attribute *attr, 332 char *buf) 333 { 334 struct bonding *bond = to_bond(d); 335 336 return sprintf(buf, "%d\n", 337 bond->params.peer_notif_delay * bond->params.miimon); 338 } 339 static DEVICE_ATTR(peer_notif_delay, 0644, 340 bonding_show_peer_notif_delay, bonding_sysfs_store_option); 341 342 /* Show the LACP interval. */ 343 static ssize_t bonding_show_lacp(struct device *d, 344 struct device_attribute *attr, 345 char *buf) 346 { 347 struct bonding *bond = to_bond(d); 348 const struct bond_opt_value *val; 349 350 val = bond_opt_get_val(BOND_OPT_LACP_RATE, bond->params.lacp_fast); 351 352 return sprintf(buf, "%s %d\n", val->string, bond->params.lacp_fast); 353 } 354 static DEVICE_ATTR(lacp_rate, 0644, 355 bonding_show_lacp, bonding_sysfs_store_option); 356 357 static ssize_t bonding_show_min_links(struct device *d, 358 struct device_attribute *attr, 359 char *buf) 360 { 361 struct bonding *bond = to_bond(d); 362 363 return sprintf(buf, "%u\n", bond->params.min_links); 364 } 365 static DEVICE_ATTR(min_links, 0644, 366 bonding_show_min_links, bonding_sysfs_store_option); 367 368 static ssize_t bonding_show_ad_select(struct device *d, 369 struct device_attribute *attr, 370 char *buf) 371 { 372 struct bonding *bond = to_bond(d); 373 const struct bond_opt_value *val; 374 375 val = bond_opt_get_val(BOND_OPT_AD_SELECT, bond->params.ad_select); 376 377 return sprintf(buf, "%s %d\n", val->string, bond->params.ad_select); 378 } 379 static DEVICE_ATTR(ad_select, 0644, 380 bonding_show_ad_select, bonding_sysfs_store_option); 381 382 /* Show the number of peer notifications to send after a failover event. */ 383 static ssize_t bonding_show_num_peer_notif(struct device *d, 384 struct device_attribute *attr, 385 char *buf) 386 { 387 struct bonding *bond = to_bond(d); 388 return sprintf(buf, "%d\n", bond->params.num_peer_notif); 389 } 390 static DEVICE_ATTR(num_grat_arp, 0644, 391 bonding_show_num_peer_notif, bonding_sysfs_store_option); 392 static DEVICE_ATTR(num_unsol_na, 0644, 393 bonding_show_num_peer_notif, bonding_sysfs_store_option); 394 395 /* Show the MII monitor interval. */ 396 static ssize_t bonding_show_miimon(struct device *d, 397 struct device_attribute *attr, 398 char *buf) 399 { 400 struct bonding *bond = to_bond(d); 401 402 return sprintf(buf, "%d\n", bond->params.miimon); 403 } 404 static DEVICE_ATTR(miimon, 0644, 405 bonding_show_miimon, bonding_sysfs_store_option); 406 407 /* Show the primary slave. */ 408 static ssize_t bonding_show_primary(struct device *d, 409 struct device_attribute *attr, 410 char *buf) 411 { 412 struct bonding *bond = to_bond(d); 413 struct slave *primary; 414 int count = 0; 415 416 rcu_read_lock(); 417 primary = rcu_dereference(bond->primary_slave); 418 if (primary) 419 count = sprintf(buf, "%s\n", primary->dev->name); 420 rcu_read_unlock(); 421 422 return count; 423 } 424 static DEVICE_ATTR(primary, 0644, 425 bonding_show_primary, bonding_sysfs_store_option); 426 427 /* Show the primary_reselect flag. */ 428 static ssize_t bonding_show_primary_reselect(struct device *d, 429 struct device_attribute *attr, 430 char *buf) 431 { 432 struct bonding *bond = to_bond(d); 433 const struct bond_opt_value *val; 434 435 val = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT, 436 bond->params.primary_reselect); 437 438 return sprintf(buf, "%s %d\n", 439 val->string, bond->params.primary_reselect); 440 } 441 static DEVICE_ATTR(primary_reselect, 0644, 442 bonding_show_primary_reselect, bonding_sysfs_store_option); 443 444 /* Show the use_carrier flag. */ 445 static ssize_t bonding_show_carrier(struct device *d, 446 struct device_attribute *attr, 447 char *buf) 448 { 449 struct bonding *bond = to_bond(d); 450 451 return sprintf(buf, "%d\n", bond->params.use_carrier); 452 } 453 static DEVICE_ATTR(use_carrier, 0644, 454 bonding_show_carrier, bonding_sysfs_store_option); 455 456 457 /* Show currently active_slave. */ 458 static ssize_t bonding_show_active_slave(struct device *d, 459 struct device_attribute *attr, 460 char *buf) 461 { 462 struct bonding *bond = to_bond(d); 463 struct net_device *slave_dev; 464 int count = 0; 465 466 rcu_read_lock(); 467 slave_dev = bond_option_active_slave_get_rcu(bond); 468 if (slave_dev) 469 count = sprintf(buf, "%s\n", slave_dev->name); 470 rcu_read_unlock(); 471 472 return count; 473 } 474 static DEVICE_ATTR(active_slave, 0644, 475 bonding_show_active_slave, bonding_sysfs_store_option); 476 477 /* Show link status of the bond interface. */ 478 static ssize_t bonding_show_mii_status(struct device *d, 479 struct device_attribute *attr, 480 char *buf) 481 { 482 struct bonding *bond = to_bond(d); 483 bool active = netif_carrier_ok(bond->dev); 484 485 return sprintf(buf, "%s\n", active ? "up" : "down"); 486 } 487 static DEVICE_ATTR(mii_status, 0444, bonding_show_mii_status, NULL); 488 489 /* Show current 802.3ad aggregator ID. */ 490 static ssize_t bonding_show_ad_aggregator(struct device *d, 491 struct device_attribute *attr, 492 char *buf) 493 { 494 int count = 0; 495 struct bonding *bond = to_bond(d); 496 497 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 498 struct ad_info ad_info; 499 count = sprintf(buf, "%d\n", 500 bond_3ad_get_active_agg_info(bond, &ad_info) 501 ? 0 : ad_info.aggregator_id); 502 } 503 504 return count; 505 } 506 static DEVICE_ATTR(ad_aggregator, 0444, bonding_show_ad_aggregator, NULL); 507 508 509 /* Show number of active 802.3ad ports. */ 510 static ssize_t bonding_show_ad_num_ports(struct device *d, 511 struct device_attribute *attr, 512 char *buf) 513 { 514 int count = 0; 515 struct bonding *bond = to_bond(d); 516 517 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 518 struct ad_info ad_info; 519 count = sprintf(buf, "%d\n", 520 bond_3ad_get_active_agg_info(bond, &ad_info) 521 ? 0 : ad_info.ports); 522 } 523 524 return count; 525 } 526 static DEVICE_ATTR(ad_num_ports, 0444, bonding_show_ad_num_ports, NULL); 527 528 529 /* Show current 802.3ad actor key. */ 530 static ssize_t bonding_show_ad_actor_key(struct device *d, 531 struct device_attribute *attr, 532 char *buf) 533 { 534 int count = 0; 535 struct bonding *bond = to_bond(d); 536 537 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { 538 struct ad_info ad_info; 539 count = sprintf(buf, "%d\n", 540 bond_3ad_get_active_agg_info(bond, &ad_info) 541 ? 0 : ad_info.actor_key); 542 } 543 544 return count; 545 } 546 static DEVICE_ATTR(ad_actor_key, 0444, bonding_show_ad_actor_key, NULL); 547 548 549 /* Show current 802.3ad partner key. */ 550 static ssize_t bonding_show_ad_partner_key(struct device *d, 551 struct device_attribute *attr, 552 char *buf) 553 { 554 int count = 0; 555 struct bonding *bond = to_bond(d); 556 557 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { 558 struct ad_info ad_info; 559 count = sprintf(buf, "%d\n", 560 bond_3ad_get_active_agg_info(bond, &ad_info) 561 ? 0 : ad_info.partner_key); 562 } 563 564 return count; 565 } 566 static DEVICE_ATTR(ad_partner_key, 0444, bonding_show_ad_partner_key, NULL); 567 568 569 /* Show current 802.3ad partner mac. */ 570 static ssize_t bonding_show_ad_partner_mac(struct device *d, 571 struct device_attribute *attr, 572 char *buf) 573 { 574 int count = 0; 575 struct bonding *bond = to_bond(d); 576 577 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { 578 struct ad_info ad_info; 579 if (!bond_3ad_get_active_agg_info(bond, &ad_info)) 580 count = sprintf(buf, "%pM\n", ad_info.partner_system); 581 } 582 583 return count; 584 } 585 static DEVICE_ATTR(ad_partner_mac, 0444, bonding_show_ad_partner_mac, NULL); 586 587 /* Show the queue_ids of the slaves in the current bond. */ 588 static ssize_t bonding_show_queue_id(struct device *d, 589 struct device_attribute *attr, 590 char *buf) 591 { 592 struct bonding *bond = to_bond(d); 593 struct list_head *iter; 594 struct slave *slave; 595 int res = 0; 596 597 if (!rtnl_trylock()) 598 return restart_syscall(); 599 600 bond_for_each_slave(bond, slave, iter) { 601 if (res > (PAGE_SIZE - IFNAMSIZ - 6)) { 602 /* not enough space for another interface_name:queue_id pair */ 603 if ((PAGE_SIZE - res) > 10) 604 res = PAGE_SIZE - 10; 605 res += sprintf(buf + res, "++more++ "); 606 break; 607 } 608 res += sprintf(buf + res, "%s:%d ", 609 slave->dev->name, slave->queue_id); 610 } 611 if (res) 612 buf[res-1] = '\n'; /* eat the leftover space */ 613 614 rtnl_unlock(); 615 616 return res; 617 } 618 static DEVICE_ATTR(queue_id, 0644, bonding_show_queue_id, 619 bonding_sysfs_store_option); 620 621 622 /* Show the all_slaves_active flag. */ 623 static ssize_t bonding_show_slaves_active(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.all_slaves_active); 630 } 631 static DEVICE_ATTR(all_slaves_active, 0644, 632 bonding_show_slaves_active, bonding_sysfs_store_option); 633 634 /* Show the number of IGMP membership reports to send on link failure */ 635 static ssize_t bonding_show_resend_igmp(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.resend_igmp); 642 } 643 static DEVICE_ATTR(resend_igmp, 0644, 644 bonding_show_resend_igmp, bonding_sysfs_store_option); 645 646 647 static ssize_t bonding_show_lp_interval(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.lp_interval); 654 } 655 static DEVICE_ATTR(lp_interval, 0644, 656 bonding_show_lp_interval, bonding_sysfs_store_option); 657 658 static ssize_t bonding_show_tlb_dynamic_lb(struct device *d, 659 struct device_attribute *attr, 660 char *buf) 661 { 662 struct bonding *bond = to_bond(d); 663 return sprintf(buf, "%d\n", bond->params.tlb_dynamic_lb); 664 } 665 static DEVICE_ATTR(tlb_dynamic_lb, 0644, 666 bonding_show_tlb_dynamic_lb, bonding_sysfs_store_option); 667 668 static ssize_t bonding_show_packets_per_slave(struct device *d, 669 struct device_attribute *attr, 670 char *buf) 671 { 672 struct bonding *bond = to_bond(d); 673 unsigned int packets_per_slave = bond->params.packets_per_slave; 674 675 return sprintf(buf, "%u\n", packets_per_slave); 676 } 677 static DEVICE_ATTR(packets_per_slave, 0644, 678 bonding_show_packets_per_slave, bonding_sysfs_store_option); 679 680 static ssize_t bonding_show_ad_actor_sys_prio(struct device *d, 681 struct device_attribute *attr, 682 char *buf) 683 { 684 struct bonding *bond = to_bond(d); 685 686 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) 687 return sprintf(buf, "%hu\n", bond->params.ad_actor_sys_prio); 688 689 return 0; 690 } 691 static DEVICE_ATTR(ad_actor_sys_prio, 0644, 692 bonding_show_ad_actor_sys_prio, bonding_sysfs_store_option); 693 694 static ssize_t bonding_show_ad_actor_system(struct device *d, 695 struct device_attribute *attr, 696 char *buf) 697 { 698 struct bonding *bond = to_bond(d); 699 700 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) 701 return sprintf(buf, "%pM\n", bond->params.ad_actor_system); 702 703 return 0; 704 } 705 706 static DEVICE_ATTR(ad_actor_system, 0644, 707 bonding_show_ad_actor_system, bonding_sysfs_store_option); 708 709 static ssize_t bonding_show_ad_user_port_key(struct device *d, 710 struct device_attribute *attr, 711 char *buf) 712 { 713 struct bonding *bond = to_bond(d); 714 715 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) 716 return sprintf(buf, "%hu\n", bond->params.ad_user_port_key); 717 718 return 0; 719 } 720 static DEVICE_ATTR(ad_user_port_key, 0644, 721 bonding_show_ad_user_port_key, bonding_sysfs_store_option); 722 723 static struct attribute *per_bond_attrs[] = { 724 &dev_attr_slaves.attr, 725 &dev_attr_mode.attr, 726 &dev_attr_fail_over_mac.attr, 727 &dev_attr_arp_validate.attr, 728 &dev_attr_arp_all_targets.attr, 729 &dev_attr_arp_interval.attr, 730 &dev_attr_arp_ip_target.attr, 731 &dev_attr_downdelay.attr, 732 &dev_attr_updelay.attr, 733 &dev_attr_peer_notif_delay.attr, 734 &dev_attr_lacp_rate.attr, 735 &dev_attr_ad_select.attr, 736 &dev_attr_xmit_hash_policy.attr, 737 &dev_attr_num_grat_arp.attr, 738 &dev_attr_num_unsol_na.attr, 739 &dev_attr_miimon.attr, 740 &dev_attr_primary.attr, 741 &dev_attr_primary_reselect.attr, 742 &dev_attr_use_carrier.attr, 743 &dev_attr_active_slave.attr, 744 &dev_attr_mii_status.attr, 745 &dev_attr_ad_aggregator.attr, 746 &dev_attr_ad_num_ports.attr, 747 &dev_attr_ad_actor_key.attr, 748 &dev_attr_ad_partner_key.attr, 749 &dev_attr_ad_partner_mac.attr, 750 &dev_attr_queue_id.attr, 751 &dev_attr_all_slaves_active.attr, 752 &dev_attr_resend_igmp.attr, 753 &dev_attr_min_links.attr, 754 &dev_attr_lp_interval.attr, 755 &dev_attr_packets_per_slave.attr, 756 &dev_attr_tlb_dynamic_lb.attr, 757 &dev_attr_ad_actor_sys_prio.attr, 758 &dev_attr_ad_actor_system.attr, 759 &dev_attr_ad_user_port_key.attr, 760 NULL, 761 }; 762 763 static const struct attribute_group bonding_group = { 764 .name = "bonding", 765 .attrs = per_bond_attrs, 766 }; 767 768 /* Initialize sysfs. This sets up the bonding_masters file in 769 * /sys/class/net. 770 */ 771 int bond_create_sysfs(struct bond_net *bn) 772 { 773 int ret; 774 775 bn->class_attr_bonding_masters = class_attr_bonding_masters; 776 sysfs_attr_init(&bn->class_attr_bonding_masters.attr); 777 778 ret = netdev_class_create_file_ns(&bn->class_attr_bonding_masters, 779 bn->net); 780 /* Permit multiple loads of the module by ignoring failures to 781 * create the bonding_masters sysfs file. Bonding devices 782 * created by second or subsequent loads of the module will 783 * not be listed in, or controllable by, bonding_masters, but 784 * will have the usual "bonding" sysfs directory. 785 * 786 * This is done to preserve backwards compatibility for 787 * initscripts/sysconfig, which load bonding multiple times to 788 * configure multiple bonding devices. 789 */ 790 if (ret == -EEXIST) { 791 /* Is someone being kinky and naming a device bonding_master? */ 792 if (__dev_get_by_name(bn->net, 793 class_attr_bonding_masters.attr.name)) 794 pr_err("network device named %s already exists in sysfs\n", 795 class_attr_bonding_masters.attr.name); 796 ret = 0; 797 } 798 799 return ret; 800 801 } 802 803 /* Remove /sys/class/net/bonding_masters. */ 804 void bond_destroy_sysfs(struct bond_net *bn) 805 { 806 netdev_class_remove_file_ns(&bn->class_attr_bonding_masters, bn->net); 807 } 808 809 /* Initialize sysfs for each bond. This sets up and registers 810 * the 'bondctl' directory for each individual bond under /sys/class/net. 811 */ 812 void bond_prepare_sysfs_group(struct bonding *bond) 813 { 814 bond->dev->sysfs_groups[0] = &bonding_group; 815 } 816 817