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); 388 389 return sprintf(buf, "%d\n", bond->params.num_peer_notif); 390 } 391 static DEVICE_ATTR(num_grat_arp, 0644, 392 bonding_show_num_peer_notif, bonding_sysfs_store_option); 393 static DEVICE_ATTR(num_unsol_na, 0644, 394 bonding_show_num_peer_notif, bonding_sysfs_store_option); 395 396 /* Show the MII monitor interval. */ 397 static ssize_t bonding_show_miimon(struct device *d, 398 struct device_attribute *attr, 399 char *buf) 400 { 401 struct bonding *bond = to_bond(d); 402 403 return sprintf(buf, "%d\n", bond->params.miimon); 404 } 405 static DEVICE_ATTR(miimon, 0644, 406 bonding_show_miimon, bonding_sysfs_store_option); 407 408 /* Show the primary slave. */ 409 static ssize_t bonding_show_primary(struct device *d, 410 struct device_attribute *attr, 411 char *buf) 412 { 413 struct bonding *bond = to_bond(d); 414 struct slave *primary; 415 int count = 0; 416 417 rcu_read_lock(); 418 primary = rcu_dereference(bond->primary_slave); 419 if (primary) 420 count = sprintf(buf, "%s\n", primary->dev->name); 421 rcu_read_unlock(); 422 423 return count; 424 } 425 static DEVICE_ATTR(primary, 0644, 426 bonding_show_primary, bonding_sysfs_store_option); 427 428 /* Show the primary_reselect flag. */ 429 static ssize_t bonding_show_primary_reselect(struct device *d, 430 struct device_attribute *attr, 431 char *buf) 432 { 433 struct bonding *bond = to_bond(d); 434 const struct bond_opt_value *val; 435 436 val = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT, 437 bond->params.primary_reselect); 438 439 return sprintf(buf, "%s %d\n", 440 val->string, bond->params.primary_reselect); 441 } 442 static DEVICE_ATTR(primary_reselect, 0644, 443 bonding_show_primary_reselect, bonding_sysfs_store_option); 444 445 /* Show the use_carrier flag. */ 446 static ssize_t bonding_show_carrier(struct device *d, 447 struct device_attribute *attr, 448 char *buf) 449 { 450 struct bonding *bond = to_bond(d); 451 452 return sprintf(buf, "%d\n", bond->params.use_carrier); 453 } 454 static DEVICE_ATTR(use_carrier, 0644, 455 bonding_show_carrier, bonding_sysfs_store_option); 456 457 458 /* Show currently active_slave. */ 459 static ssize_t bonding_show_active_slave(struct device *d, 460 struct device_attribute *attr, 461 char *buf) 462 { 463 struct bonding *bond = to_bond(d); 464 struct net_device *slave_dev; 465 int count = 0; 466 467 rcu_read_lock(); 468 slave_dev = bond_option_active_slave_get_rcu(bond); 469 if (slave_dev) 470 count = sprintf(buf, "%s\n", slave_dev->name); 471 rcu_read_unlock(); 472 473 return count; 474 } 475 static DEVICE_ATTR(active_slave, 0644, 476 bonding_show_active_slave, bonding_sysfs_store_option); 477 478 /* Show link status of the bond interface. */ 479 static ssize_t bonding_show_mii_status(struct device *d, 480 struct device_attribute *attr, 481 char *buf) 482 { 483 struct bonding *bond = to_bond(d); 484 bool active = netif_carrier_ok(bond->dev); 485 486 return sprintf(buf, "%s\n", active ? "up" : "down"); 487 } 488 static DEVICE_ATTR(mii_status, 0444, bonding_show_mii_status, NULL); 489 490 /* Show current 802.3ad aggregator ID. */ 491 static ssize_t bonding_show_ad_aggregator(struct device *d, 492 struct device_attribute *attr, 493 char *buf) 494 { 495 int count = 0; 496 struct bonding *bond = to_bond(d); 497 498 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 499 struct ad_info ad_info; 500 501 count = sprintf(buf, "%d\n", 502 bond_3ad_get_active_agg_info(bond, &ad_info) 503 ? 0 : ad_info.aggregator_id); 504 } 505 506 return count; 507 } 508 static DEVICE_ATTR(ad_aggregator, 0444, bonding_show_ad_aggregator, NULL); 509 510 511 /* Show number of active 802.3ad ports. */ 512 static ssize_t bonding_show_ad_num_ports(struct device *d, 513 struct device_attribute *attr, 514 char *buf) 515 { 516 int count = 0; 517 struct bonding *bond = to_bond(d); 518 519 if (BOND_MODE(bond) == BOND_MODE_8023AD) { 520 struct ad_info ad_info; 521 522 count = sprintf(buf, "%d\n", 523 bond_3ad_get_active_agg_info(bond, &ad_info) 524 ? 0 : ad_info.ports); 525 } 526 527 return count; 528 } 529 static DEVICE_ATTR(ad_num_ports, 0444, bonding_show_ad_num_ports, NULL); 530 531 532 /* Show current 802.3ad actor key. */ 533 static ssize_t bonding_show_ad_actor_key(struct device *d, 534 struct device_attribute *attr, 535 char *buf) 536 { 537 int count = 0; 538 struct bonding *bond = to_bond(d); 539 540 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { 541 struct ad_info ad_info; 542 543 count = sprintf(buf, "%d\n", 544 bond_3ad_get_active_agg_info(bond, &ad_info) 545 ? 0 : ad_info.actor_key); 546 } 547 548 return count; 549 } 550 static DEVICE_ATTR(ad_actor_key, 0444, bonding_show_ad_actor_key, NULL); 551 552 553 /* Show current 802.3ad partner key. */ 554 static ssize_t bonding_show_ad_partner_key(struct device *d, 555 struct device_attribute *attr, 556 char *buf) 557 { 558 int count = 0; 559 struct bonding *bond = to_bond(d); 560 561 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { 562 struct ad_info ad_info; 563 564 count = sprintf(buf, "%d\n", 565 bond_3ad_get_active_agg_info(bond, &ad_info) 566 ? 0 : ad_info.partner_key); 567 } 568 569 return count; 570 } 571 static DEVICE_ATTR(ad_partner_key, 0444, bonding_show_ad_partner_key, NULL); 572 573 574 /* Show current 802.3ad partner mac. */ 575 static ssize_t bonding_show_ad_partner_mac(struct device *d, 576 struct device_attribute *attr, 577 char *buf) 578 { 579 int count = 0; 580 struct bonding *bond = to_bond(d); 581 582 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) { 583 struct ad_info ad_info; 584 585 if (!bond_3ad_get_active_agg_info(bond, &ad_info)) 586 count = sprintf(buf, "%pM\n", ad_info.partner_system); 587 } 588 589 return count; 590 } 591 static DEVICE_ATTR(ad_partner_mac, 0444, bonding_show_ad_partner_mac, NULL); 592 593 /* Show the queue_ids of the slaves in the current bond. */ 594 static ssize_t bonding_show_queue_id(struct device *d, 595 struct device_attribute *attr, 596 char *buf) 597 { 598 struct bonding *bond = to_bond(d); 599 struct list_head *iter; 600 struct slave *slave; 601 int res = 0; 602 603 if (!rtnl_trylock()) 604 return restart_syscall(); 605 606 bond_for_each_slave(bond, slave, iter) { 607 if (res > (PAGE_SIZE - IFNAMSIZ - 6)) { 608 /* not enough space for another interface_name:queue_id pair */ 609 if ((PAGE_SIZE - res) > 10) 610 res = PAGE_SIZE - 10; 611 res += sprintf(buf + res, "++more++ "); 612 break; 613 } 614 res += sprintf(buf + res, "%s:%d ", 615 slave->dev->name, slave->queue_id); 616 } 617 if (res) 618 buf[res-1] = '\n'; /* eat the leftover space */ 619 620 rtnl_unlock(); 621 622 return res; 623 } 624 static DEVICE_ATTR(queue_id, 0644, bonding_show_queue_id, 625 bonding_sysfs_store_option); 626 627 628 /* Show the all_slaves_active flag. */ 629 static ssize_t bonding_show_slaves_active(struct device *d, 630 struct device_attribute *attr, 631 char *buf) 632 { 633 struct bonding *bond = to_bond(d); 634 635 return sprintf(buf, "%d\n", bond->params.all_slaves_active); 636 } 637 static DEVICE_ATTR(all_slaves_active, 0644, 638 bonding_show_slaves_active, bonding_sysfs_store_option); 639 640 /* Show the number of IGMP membership reports to send on link failure */ 641 static ssize_t bonding_show_resend_igmp(struct device *d, 642 struct device_attribute *attr, 643 char *buf) 644 { 645 struct bonding *bond = to_bond(d); 646 647 return sprintf(buf, "%d\n", bond->params.resend_igmp); 648 } 649 static DEVICE_ATTR(resend_igmp, 0644, 650 bonding_show_resend_igmp, bonding_sysfs_store_option); 651 652 653 static ssize_t bonding_show_lp_interval(struct device *d, 654 struct device_attribute *attr, 655 char *buf) 656 { 657 struct bonding *bond = to_bond(d); 658 659 return sprintf(buf, "%d\n", bond->params.lp_interval); 660 } 661 static DEVICE_ATTR(lp_interval, 0644, 662 bonding_show_lp_interval, bonding_sysfs_store_option); 663 664 static ssize_t bonding_show_tlb_dynamic_lb(struct device *d, 665 struct device_attribute *attr, 666 char *buf) 667 { 668 struct bonding *bond = to_bond(d); 669 670 return sprintf(buf, "%d\n", bond->params.tlb_dynamic_lb); 671 } 672 static DEVICE_ATTR(tlb_dynamic_lb, 0644, 673 bonding_show_tlb_dynamic_lb, bonding_sysfs_store_option); 674 675 static ssize_t bonding_show_packets_per_slave(struct device *d, 676 struct device_attribute *attr, 677 char *buf) 678 { 679 struct bonding *bond = to_bond(d); 680 unsigned int packets_per_slave = bond->params.packets_per_slave; 681 682 return sprintf(buf, "%u\n", packets_per_slave); 683 } 684 static DEVICE_ATTR(packets_per_slave, 0644, 685 bonding_show_packets_per_slave, bonding_sysfs_store_option); 686 687 static ssize_t bonding_show_ad_actor_sys_prio(struct device *d, 688 struct device_attribute *attr, 689 char *buf) 690 { 691 struct bonding *bond = to_bond(d); 692 693 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) 694 return sprintf(buf, "%hu\n", bond->params.ad_actor_sys_prio); 695 696 return 0; 697 } 698 static DEVICE_ATTR(ad_actor_sys_prio, 0644, 699 bonding_show_ad_actor_sys_prio, bonding_sysfs_store_option); 700 701 static ssize_t bonding_show_ad_actor_system(struct device *d, 702 struct device_attribute *attr, 703 char *buf) 704 { 705 struct bonding *bond = to_bond(d); 706 707 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) 708 return sprintf(buf, "%pM\n", bond->params.ad_actor_system); 709 710 return 0; 711 } 712 713 static DEVICE_ATTR(ad_actor_system, 0644, 714 bonding_show_ad_actor_system, bonding_sysfs_store_option); 715 716 static ssize_t bonding_show_ad_user_port_key(struct device *d, 717 struct device_attribute *attr, 718 char *buf) 719 { 720 struct bonding *bond = to_bond(d); 721 722 if (BOND_MODE(bond) == BOND_MODE_8023AD && capable(CAP_NET_ADMIN)) 723 return sprintf(buf, "%hu\n", bond->params.ad_user_port_key); 724 725 return 0; 726 } 727 static DEVICE_ATTR(ad_user_port_key, 0644, 728 bonding_show_ad_user_port_key, bonding_sysfs_store_option); 729 730 static struct attribute *per_bond_attrs[] = { 731 &dev_attr_slaves.attr, 732 &dev_attr_mode.attr, 733 &dev_attr_fail_over_mac.attr, 734 &dev_attr_arp_validate.attr, 735 &dev_attr_arp_all_targets.attr, 736 &dev_attr_arp_interval.attr, 737 &dev_attr_arp_ip_target.attr, 738 &dev_attr_downdelay.attr, 739 &dev_attr_updelay.attr, 740 &dev_attr_peer_notif_delay.attr, 741 &dev_attr_lacp_rate.attr, 742 &dev_attr_ad_select.attr, 743 &dev_attr_xmit_hash_policy.attr, 744 &dev_attr_num_grat_arp.attr, 745 &dev_attr_num_unsol_na.attr, 746 &dev_attr_miimon.attr, 747 &dev_attr_primary.attr, 748 &dev_attr_primary_reselect.attr, 749 &dev_attr_use_carrier.attr, 750 &dev_attr_active_slave.attr, 751 &dev_attr_mii_status.attr, 752 &dev_attr_ad_aggregator.attr, 753 &dev_attr_ad_num_ports.attr, 754 &dev_attr_ad_actor_key.attr, 755 &dev_attr_ad_partner_key.attr, 756 &dev_attr_ad_partner_mac.attr, 757 &dev_attr_queue_id.attr, 758 &dev_attr_all_slaves_active.attr, 759 &dev_attr_resend_igmp.attr, 760 &dev_attr_min_links.attr, 761 &dev_attr_lp_interval.attr, 762 &dev_attr_packets_per_slave.attr, 763 &dev_attr_tlb_dynamic_lb.attr, 764 &dev_attr_ad_actor_sys_prio.attr, 765 &dev_attr_ad_actor_system.attr, 766 &dev_attr_ad_user_port_key.attr, 767 NULL, 768 }; 769 770 static const struct attribute_group bonding_group = { 771 .name = "bonding", 772 .attrs = per_bond_attrs, 773 }; 774 775 /* Initialize sysfs. This sets up the bonding_masters file in 776 * /sys/class/net. 777 */ 778 int bond_create_sysfs(struct bond_net *bn) 779 { 780 int ret; 781 782 bn->class_attr_bonding_masters = class_attr_bonding_masters; 783 sysfs_attr_init(&bn->class_attr_bonding_masters.attr); 784 785 ret = netdev_class_create_file_ns(&bn->class_attr_bonding_masters, 786 bn->net); 787 /* Permit multiple loads of the module by ignoring failures to 788 * create the bonding_masters sysfs file. Bonding devices 789 * created by second or subsequent loads of the module will 790 * not be listed in, or controllable by, bonding_masters, but 791 * will have the usual "bonding" sysfs directory. 792 * 793 * This is done to preserve backwards compatibility for 794 * initscripts/sysconfig, which load bonding multiple times to 795 * configure multiple bonding devices. 796 */ 797 if (ret == -EEXIST) { 798 /* Is someone being kinky and naming a device bonding_master? */ 799 if (__dev_get_by_name(bn->net, 800 class_attr_bonding_masters.attr.name)) 801 pr_err("network device named %s already exists in sysfs\n", 802 class_attr_bonding_masters.attr.name); 803 ret = 0; 804 } 805 806 return ret; 807 808 } 809 810 /* Remove /sys/class/net/bonding_masters. */ 811 void bond_destroy_sysfs(struct bond_net *bn) 812 { 813 netdev_class_remove_file_ns(&bn->class_attr_bonding_masters, bn->net); 814 } 815 816 /* Initialize sysfs for each bond. This sets up and registers 817 * the 'bondctl' directory for each individual bond under /sys/class/net. 818 */ 819 void bond_prepare_sysfs_group(struct bonding *bond) 820 { 821 bond->dev->sysfs_groups[0] = &bonding_group; 822 } 823 824