1 /* SPDX-License-Identifier: GPL-1.0+ */ 2 /* 3 * Bond several ethernet interfaces into a Cisco, running 'Etherchannel'. 4 * 5 * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes 6 * NCM: Network and Communications Management, Inc. 7 * 8 * BUT, I'm the one who modified it for ethernet, so: 9 * (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov 10 * 11 */ 12 13 #ifndef _NET_BONDING_H 14 #define _NET_BONDING_H 15 16 #include <linux/timer.h> 17 #include <linux/proc_fs.h> 18 #include <linux/if_bonding.h> 19 #include <linux/cpumask.h> 20 #include <linux/in6.h> 21 #include <linux/netpoll.h> 22 #include <linux/inetdevice.h> 23 #include <linux/etherdevice.h> 24 #include <linux/reciprocal_div.h> 25 #include <linux/if_link.h> 26 27 #include <net/bond_3ad.h> 28 #include <net/bond_alb.h> 29 #include <net/bond_options.h> 30 #include <net/ipv6.h> 31 #include <net/addrconf.h> 32 33 #define BOND_MAX_ARP_TARGETS 16 34 #define BOND_MAX_NS_TARGETS BOND_MAX_ARP_TARGETS 35 36 #define BOND_DEFAULT_MIIMON 100 37 38 #ifndef __long_aligned 39 #define __long_aligned __attribute__((aligned((sizeof(long))))) 40 #endif 41 42 #define slave_info(bond_dev, slave_dev, fmt, ...) \ 43 netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 44 #define slave_warn(bond_dev, slave_dev, fmt, ...) \ 45 netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 46 #define slave_dbg(bond_dev, slave_dev, fmt, ...) \ 47 netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 48 #define slave_err(bond_dev, slave_dev, fmt, ...) \ 49 netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 50 51 #define BOND_MODE(bond) ((bond)->params.mode) 52 53 /* slave list primitives */ 54 #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower) 55 56 #define bond_has_slaves(bond) !list_empty(bond_slave_list(bond)) 57 58 /* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */ 59 #define bond_first_slave(bond) \ 60 (bond_has_slaves(bond) ? \ 61 netdev_adjacent_get_private(bond_slave_list(bond)->next) : \ 62 NULL) 63 #define bond_last_slave(bond) \ 64 (bond_has_slaves(bond) ? \ 65 netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \ 66 NULL) 67 68 /* Caller must have rcu_read_lock */ 69 #define bond_first_slave_rcu(bond) \ 70 netdev_lower_get_first_private_rcu(bond->dev) 71 72 #define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond)) 73 #define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond)) 74 75 /** 76 * bond_for_each_slave - iterate over all slaves 77 * @bond: the bond holding this list 78 * @pos: current slave 79 * @iter: list_head * iterator 80 * 81 * Caller must hold RTNL 82 */ 83 #define bond_for_each_slave(bond, pos, iter) \ 84 netdev_for_each_lower_private((bond)->dev, pos, iter) 85 86 /* Caller must have rcu_read_lock */ 87 #define bond_for_each_slave_rcu(bond, pos, iter) \ 88 netdev_for_each_lower_private_rcu((bond)->dev, pos, iter) 89 90 #define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ 91 NETIF_F_GSO_ESP) 92 93 #ifdef CONFIG_NET_POLL_CONTROLLER 94 extern atomic_t netpoll_block_tx; 95 96 static inline void block_netpoll_tx(void) 97 { 98 atomic_inc(&netpoll_block_tx); 99 } 100 101 static inline void unblock_netpoll_tx(void) 102 { 103 atomic_dec(&netpoll_block_tx); 104 } 105 106 static inline int is_netpoll_tx_blocked(struct net_device *dev) 107 { 108 if (unlikely(netpoll_tx_running(dev))) 109 return atomic_read(&netpoll_block_tx); 110 return 0; 111 } 112 #else 113 #define block_netpoll_tx() 114 #define unblock_netpoll_tx() 115 #define is_netpoll_tx_blocked(dev) (0) 116 #endif 117 118 DECLARE_STATIC_KEY_FALSE(bond_bcast_neigh_enabled); 119 120 struct bond_params { 121 int mode; 122 int xmit_policy; 123 int miimon; 124 u8 num_peer_notif; 125 u8 missed_max; 126 int arp_interval; 127 int arp_validate; 128 int arp_all_targets; 129 int fail_over_mac; 130 int updelay; 131 int downdelay; 132 int peer_notif_delay; 133 int lacp_active; 134 int lacp_fast; 135 unsigned int min_links; 136 int ad_select; 137 char primary[IFNAMSIZ]; 138 int primary_reselect; 139 __be32 arp_targets[BOND_MAX_ARP_TARGETS]; 140 int tx_queues; 141 int all_slaves_active; 142 int resend_igmp; 143 int lp_interval; 144 int packets_per_slave; 145 int tlb_dynamic_lb; 146 struct reciprocal_value reciprocal_packets_per_slave; 147 u16 ad_actor_sys_prio; 148 u16 ad_user_port_key; 149 #if IS_ENABLED(CONFIG_IPV6) 150 struct in6_addr ns_targets[BOND_MAX_NS_TARGETS]; 151 #endif 152 int coupled_control; 153 int broadcast_neighbor; 154 155 /* 2 bytes of padding : see ether_addr_equal_64bits() */ 156 u8 ad_actor_system[ETH_ALEN + 2]; 157 }; 158 159 struct slave { 160 struct net_device *dev; /* first - useful for panic debug */ 161 struct bonding *bond; /* our master */ 162 int delay; 163 /* all 4 in jiffies */ 164 unsigned long last_link_up; 165 unsigned long last_tx; 166 unsigned long last_rx; 167 unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; 168 s8 link; /* one of BOND_LINK_XXXX */ 169 s8 link_new_state; /* one of BOND_LINK_XXXX */ 170 u8 backup:1, /* indicates backup slave. Value corresponds with 171 BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ 172 inactive:1, /* indicates inactive slave */ 173 rx_disabled:1, /* indicates whether slave's Rx is disabled */ 174 should_notify:1, /* indicates whether the state changed */ 175 should_notify_link:1; /* indicates whether the link changed */ 176 u8 duplex; 177 u32 original_mtu; 178 u32 link_failure_count; 179 u32 speed; 180 u16 queue_id; 181 u8 perm_hwaddr[MAX_ADDR_LEN]; 182 int prio; 183 struct ad_slave_info *ad_info; 184 struct tlb_slave_info tlb_info; 185 #ifdef CONFIG_NET_POLL_CONTROLLER 186 struct netpoll *np; 187 #endif 188 struct delayed_work notify_work; 189 struct kobject kobj; 190 struct rtnl_link_stats64 slave_stats; 191 }; 192 193 static inline struct slave *to_slave(struct kobject *kobj) 194 { 195 return container_of(kobj, struct slave, kobj); 196 } 197 198 struct bond_up_slave { 199 unsigned int count; 200 struct rcu_head rcu; 201 struct slave *arr[]; 202 }; 203 204 /* 205 * Link pseudo-state only used internally by monitors 206 */ 207 #define BOND_LINK_NOCHANGE -1 208 209 struct bond_ipsec { 210 struct list_head list; 211 struct xfrm_state *xs; 212 }; 213 214 /* 215 * Here are the locking policies for the two bonding locks: 216 * Get rcu_read_lock when reading or RTNL when writing slave list. 217 */ 218 struct bonding { 219 struct net_device *dev; /* first - useful for panic debug */ 220 struct slave __rcu *curr_active_slave; 221 struct slave __rcu *current_arp_slave; 222 struct slave __rcu *primary_slave; 223 struct bond_up_slave __rcu *usable_slaves; 224 struct bond_up_slave __rcu *all_slaves; 225 bool force_primary; 226 bool notifier_ctx; 227 s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ 228 int (*recv_probe)(const struct sk_buff *, struct bonding *, 229 struct slave *); 230 /* mode_lock is used for mode-specific locking needs, currently used by: 231 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and 232 * bond_3ad_state_machine_handler() concurrently and also 233 * the access to the state machine shared variables. 234 * TLB mode (5) - to sync the use and modifications of its hash table 235 * ALB mode (6) - to sync the use and modifications of its hash table 236 */ 237 spinlock_t mode_lock; 238 spinlock_t stats_lock; 239 u32 send_peer_notif; 240 u8 igmp_retrans; 241 #ifdef CONFIG_PROC_FS 242 struct proc_dir_entry *proc_entry; 243 char proc_file_name[IFNAMSIZ]; 244 #endif /* CONFIG_PROC_FS */ 245 struct list_head bond_list; 246 u32 __percpu *rr_tx_counter; 247 struct ad_bond_info ad_info; 248 struct alb_bond_info alb_info; 249 struct bond_params params; 250 struct workqueue_struct *wq; 251 struct delayed_work mii_work; 252 struct delayed_work arp_work; 253 struct delayed_work alb_work; 254 struct delayed_work ad_work; 255 struct delayed_work mcast_work; 256 struct delayed_work slave_arr_work; 257 #ifdef CONFIG_DEBUG_FS 258 /* debugging support via debugfs */ 259 struct dentry *debug_dir; 260 #endif /* CONFIG_DEBUG_FS */ 261 struct rtnl_link_stats64 bond_stats; 262 #ifdef CONFIG_XFRM_OFFLOAD 263 struct list_head ipsec_list; 264 /* protecting ipsec_list */ 265 struct mutex ipsec_lock; 266 #endif /* CONFIG_XFRM_OFFLOAD */ 267 struct bpf_prog *xdp_prog; 268 }; 269 270 #define bond_slave_get_rcu(dev) \ 271 ((struct slave *) rcu_dereference(dev->rx_handler_data)) 272 273 #define bond_slave_get_rtnl(dev) \ 274 ((struct slave *) rtnl_dereference(dev->rx_handler_data)) 275 276 void bond_queue_slave_event(struct slave *slave); 277 void bond_lower_state_changed(struct slave *slave); 278 279 struct bond_vlan_tag { 280 __be16 vlan_proto; 281 unsigned short vlan_id; 282 }; 283 284 /* 285 * Returns NULL if the net_device does not belong to any of the bond's slaves 286 * 287 * Caller must hold bond lock for read 288 */ 289 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, 290 struct net_device *slave_dev) 291 { 292 return netdev_lower_dev_get_private(bond->dev, slave_dev); 293 } 294 295 static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) 296 { 297 return slave->bond; 298 } 299 300 static inline bool bond_should_override_tx_queue(struct bonding *bond) 301 { 302 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || 303 BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; 304 } 305 306 static inline bool bond_is_lb(const struct bonding *bond) 307 { 308 return BOND_MODE(bond) == BOND_MODE_TLB || 309 BOND_MODE(bond) == BOND_MODE_ALB; 310 } 311 312 static inline bool bond_needs_speed_duplex(const struct bonding *bond) 313 { 314 return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond); 315 } 316 317 static inline bool bond_is_nondyn_tlb(const struct bonding *bond) 318 { 319 return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); 320 } 321 322 static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) 323 { 324 return (BOND_MODE(bond) == BOND_MODE_8023AD || 325 BOND_MODE(bond) == BOND_MODE_XOR || 326 BOND_MODE(bond) == BOND_MODE_TLB || 327 BOND_MODE(bond) == BOND_MODE_ALB); 328 } 329 330 static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) 331 { 332 return (BOND_MODE(bond) == BOND_MODE_8023AD || 333 BOND_MODE(bond) == BOND_MODE_XOR || 334 bond_is_nondyn_tlb(bond)); 335 } 336 337 static inline bool bond_mode_uses_arp(int mode) 338 { 339 return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && 340 mode != BOND_MODE_ALB; 341 } 342 343 static inline bool bond_mode_uses_primary(int mode) 344 { 345 return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || 346 mode == BOND_MODE_ALB; 347 } 348 349 static inline bool bond_uses_primary(struct bonding *bond) 350 { 351 return bond_mode_uses_primary(BOND_MODE(bond)); 352 } 353 354 static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) 355 { 356 struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave); 357 358 return bond_uses_primary(bond) && slave ? slave->dev : NULL; 359 } 360 361 static inline bool bond_slave_is_up(struct slave *slave) 362 { 363 return netif_running(slave->dev) && netif_carrier_ok(slave->dev); 364 } 365 366 static inline void bond_set_active_slave(struct slave *slave) 367 { 368 if (slave->backup) { 369 slave->backup = 0; 370 bond_queue_slave_event(slave); 371 bond_lower_state_changed(slave); 372 } 373 } 374 375 static inline void bond_set_backup_slave(struct slave *slave) 376 { 377 if (!slave->backup) { 378 slave->backup = 1; 379 bond_queue_slave_event(slave); 380 bond_lower_state_changed(slave); 381 } 382 } 383 384 static inline void bond_set_slave_state(struct slave *slave, 385 int slave_state, bool notify) 386 { 387 if (slave->backup == slave_state) 388 return; 389 390 slave->backup = slave_state; 391 if (notify) { 392 bond_lower_state_changed(slave); 393 bond_queue_slave_event(slave); 394 slave->should_notify = 0; 395 } else { 396 if (slave->should_notify) 397 slave->should_notify = 0; 398 else 399 slave->should_notify = 1; 400 } 401 } 402 403 static inline void bond_slave_state_change(struct bonding *bond) 404 { 405 struct list_head *iter; 406 struct slave *tmp; 407 408 bond_for_each_slave(bond, tmp, iter) { 409 if (tmp->link == BOND_LINK_UP) 410 bond_set_active_slave(tmp); 411 else if (tmp->link == BOND_LINK_DOWN) 412 bond_set_backup_slave(tmp); 413 } 414 } 415 416 static inline void bond_slave_state_notify(struct bonding *bond) 417 { 418 struct list_head *iter; 419 struct slave *tmp; 420 421 bond_for_each_slave(bond, tmp, iter) { 422 if (tmp->should_notify) { 423 bond_lower_state_changed(tmp); 424 tmp->should_notify = 0; 425 } 426 } 427 } 428 429 static inline int bond_slave_state(struct slave *slave) 430 { 431 return slave->backup; 432 } 433 434 static inline bool bond_is_active_slave(struct slave *slave) 435 { 436 return !bond_slave_state(slave); 437 } 438 439 static inline bool bond_slave_can_tx(struct slave *slave) 440 { 441 return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && 442 bond_is_active_slave(slave); 443 } 444 445 static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) 446 { 447 struct slave *slave; 448 bool active; 449 450 rcu_read_lock(); 451 slave = bond_slave_get_rcu(slave_dev); 452 active = bond_is_active_slave(slave); 453 rcu_read_unlock(); 454 455 return active; 456 } 457 458 static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) 459 { 460 if (len == ETH_ALEN) { 461 ether_addr_copy(dst, src); 462 return; 463 } 464 465 memcpy(dst, src, len); 466 } 467 468 #define BOND_PRI_RESELECT_ALWAYS 0 469 #define BOND_PRI_RESELECT_BETTER 1 470 #define BOND_PRI_RESELECT_FAILURE 2 471 472 #define BOND_FOM_NONE 0 473 #define BOND_FOM_ACTIVE 1 474 #define BOND_FOM_FOLLOW 2 475 476 #define BOND_ARP_TARGETS_ANY 0 477 #define BOND_ARP_TARGETS_ALL 1 478 479 #define BOND_ARP_VALIDATE_NONE 0 480 #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) 481 #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) 482 #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ 483 BOND_ARP_VALIDATE_BACKUP) 484 #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) 485 #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ 486 BOND_ARP_FILTER) 487 #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ 488 BOND_ARP_FILTER) 489 490 #define BOND_SLAVE_NOTIFY_NOW true 491 #define BOND_SLAVE_NOTIFY_LATER false 492 493 static inline int slave_do_arp_validate(struct bonding *bond, 494 struct slave *slave) 495 { 496 return bond->params.arp_validate & (1 << bond_slave_state(slave)); 497 } 498 499 static inline int slave_do_arp_validate_only(struct bonding *bond) 500 { 501 return bond->params.arp_validate & BOND_ARP_FILTER; 502 } 503 504 static inline int bond_is_ip_target_ok(__be32 addr) 505 { 506 return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); 507 } 508 509 #if IS_ENABLED(CONFIG_IPV6) 510 static inline int bond_is_ip6_target_ok(struct in6_addr *addr) 511 { 512 return !ipv6_addr_any(addr) && 513 !ipv6_addr_loopback(addr) && 514 !ipv6_addr_is_multicast(addr); 515 } 516 #endif 517 518 /* Get the oldest arp which we've received on this slave for bond's 519 * arp_targets. 520 */ 521 static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, 522 struct slave *slave) 523 { 524 int i = 1; 525 unsigned long ret = slave->target_last_arp_rx[0]; 526 527 for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) 528 if (time_before(slave->target_last_arp_rx[i], ret)) 529 ret = slave->target_last_arp_rx[i]; 530 531 return ret; 532 } 533 534 static inline unsigned long slave_last_rx(struct bonding *bond, 535 struct slave *slave) 536 { 537 if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) 538 return slave_oldest_target_arp_rx(bond, slave); 539 540 return slave->last_rx; 541 } 542 543 static inline void slave_update_last_tx(struct slave *slave) 544 { 545 WRITE_ONCE(slave->last_tx, jiffies); 546 } 547 548 static inline unsigned long slave_last_tx(struct slave *slave) 549 { 550 return READ_ONCE(slave->last_tx); 551 } 552 553 #ifdef CONFIG_NET_POLL_CONTROLLER 554 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 555 struct sk_buff *skb) 556 { 557 return netpoll_send_skb(slave->np, skb); 558 } 559 #else 560 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 561 struct sk_buff *skb) 562 { 563 BUG(); 564 return NETDEV_TX_OK; 565 } 566 #endif 567 568 static inline void bond_set_slave_inactive_flags(struct slave *slave, 569 bool notify) 570 { 571 if (!bond_is_lb(slave->bond)) 572 bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); 573 if (!slave->bond->params.all_slaves_active) 574 slave->inactive = 1; 575 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) 576 slave->rx_disabled = 1; 577 } 578 579 static inline void bond_set_slave_tx_disabled_flags(struct slave *slave, 580 bool notify) 581 { 582 bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); 583 } 584 585 static inline void bond_set_slave_active_flags(struct slave *slave, 586 bool notify) 587 { 588 bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); 589 slave->inactive = 0; 590 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) 591 slave->rx_disabled = 0; 592 } 593 594 static inline void bond_set_slave_rx_enabled_flags(struct slave *slave, 595 bool notify) 596 { 597 slave->rx_disabled = 0; 598 } 599 600 static inline bool bond_is_slave_inactive(struct slave *slave) 601 { 602 return slave->inactive; 603 } 604 605 static inline bool bond_is_slave_rx_disabled(struct slave *slave) 606 { 607 return slave->rx_disabled; 608 } 609 610 static inline void bond_propose_link_state(struct slave *slave, int state) 611 { 612 slave->link_new_state = state; 613 } 614 615 static inline void bond_commit_link_state(struct slave *slave, bool notify) 616 { 617 if (slave->link_new_state == BOND_LINK_NOCHANGE) 618 return; 619 620 slave->link = slave->link_new_state; 621 if (notify) { 622 bond_queue_slave_event(slave); 623 bond_lower_state_changed(slave); 624 slave->should_notify_link = 0; 625 } else { 626 if (slave->should_notify_link) 627 slave->should_notify_link = 0; 628 else 629 slave->should_notify_link = 1; 630 } 631 } 632 633 static inline void bond_set_slave_link_state(struct slave *slave, int state, 634 bool notify) 635 { 636 bond_propose_link_state(slave, state); 637 bond_commit_link_state(slave, notify); 638 } 639 640 static inline void bond_slave_link_notify(struct bonding *bond) 641 { 642 struct list_head *iter; 643 struct slave *tmp; 644 645 bond_for_each_slave(bond, tmp, iter) { 646 if (tmp->should_notify_link) { 647 bond_queue_slave_event(tmp); 648 bond_lower_state_changed(tmp); 649 tmp->should_notify_link = 0; 650 } 651 } 652 } 653 654 static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) 655 { 656 struct in_device *in_dev; 657 __be32 addr = 0; 658 659 rcu_read_lock(); 660 in_dev = __in_dev_get_rcu(dev); 661 662 if (in_dev) 663 addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, 664 RT_SCOPE_HOST); 665 rcu_read_unlock(); 666 return addr; 667 } 668 669 struct bond_net { 670 struct net *net; /* Associated network namespace */ 671 struct list_head dev_list; 672 #ifdef CONFIG_PROC_FS 673 struct proc_dir_entry *proc_dir; 674 #endif 675 struct class_attribute class_attr_bonding_masters; 676 }; 677 678 int bond_rcv_validate(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); 679 netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); 680 int bond_create(struct net *net, const char *name); 681 int bond_create_sysfs(struct bond_net *net); 682 void bond_destroy_sysfs(struct bond_net *net); 683 void bond_prepare_sysfs_group(struct bonding *bond); 684 int bond_sysfs_slave_add(struct slave *slave); 685 void bond_sysfs_slave_del(struct slave *slave); 686 void bond_xdp_set_features(struct net_device *bond_dev); 687 int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, 688 struct netlink_ext_ack *extack); 689 int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); 690 u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); 691 int bond_set_carrier(struct bonding *bond); 692 void bond_select_active_slave(struct bonding *bond); 693 void bond_change_active_slave(struct bonding *bond, struct slave *new_active); 694 void bond_create_debugfs(void); 695 void bond_destroy_debugfs(void); 696 void bond_debug_register(struct bonding *bond); 697 void bond_debug_unregister(struct bonding *bond); 698 void bond_debug_reregister(struct bonding *bond); 699 const char *bond_mode_name(int mode); 700 bool bond_xdp_check(struct bonding *bond, int mode); 701 void bond_setup(struct net_device *bond_dev); 702 unsigned int bond_get_num_tx_queues(void); 703 int bond_netlink_init(void); 704 void bond_netlink_fini(void); 705 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); 706 const char *bond_slave_link_status(s8 link); 707 struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, 708 struct net_device *end_dev, 709 int level); 710 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); 711 void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); 712 void bond_work_init_all(struct bonding *bond); 713 void bond_work_cancel_all(struct bonding *bond); 714 715 #ifdef CONFIG_PROC_FS 716 void bond_create_proc_entry(struct bonding *bond); 717 void bond_remove_proc_entry(struct bonding *bond); 718 void bond_create_proc_dir(struct bond_net *bn); 719 void bond_destroy_proc_dir(struct bond_net *bn); 720 #else 721 static inline void bond_create_proc_entry(struct bonding *bond) 722 { 723 } 724 725 static inline void bond_remove_proc_entry(struct bonding *bond) 726 { 727 } 728 729 static inline void bond_create_proc_dir(struct bond_net *bn) 730 { 731 } 732 733 static inline void bond_destroy_proc_dir(struct bond_net *bn) 734 { 735 } 736 #endif 737 738 static inline struct slave *bond_slave_has_mac(struct bonding *bond, 739 const u8 *mac) 740 { 741 struct list_head *iter; 742 struct slave *tmp; 743 744 bond_for_each_slave(bond, tmp, iter) 745 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 746 return tmp; 747 748 return NULL; 749 } 750 751 /* Caller must hold rcu_read_lock() for read */ 752 static inline bool bond_slave_has_mac_rcu(struct bonding *bond, const u8 *mac) 753 { 754 struct list_head *iter; 755 struct slave *tmp; 756 757 bond_for_each_slave_rcu(bond, tmp, iter) 758 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 759 return true; 760 return false; 761 } 762 763 /* Check if the ip is present in arp ip list, or first free slot if ip == 0 764 * Returns -1 if not found, index if found 765 */ 766 static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) 767 { 768 int i; 769 770 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 771 if (targets[i] == ip) 772 return i; 773 else if (targets[i] == 0) 774 break; 775 776 return -1; 777 } 778 779 #if IS_ENABLED(CONFIG_IPV6) 780 static inline int bond_get_targets_ip6(struct in6_addr *targets, struct in6_addr *ip) 781 { 782 struct in6_addr mcaddr; 783 int i; 784 785 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) { 786 addrconf_addr_solict_mult(&targets[i], &mcaddr); 787 if ((ipv6_addr_equal(&targets[i], ip)) || 788 (ipv6_addr_equal(&mcaddr, ip))) 789 return i; 790 else if (ipv6_addr_any(&targets[i])) 791 break; 792 } 793 794 return -1; 795 } 796 #endif 797 798 /* exported from bond_main.c */ 799 extern unsigned int bond_net_id; 800 801 /* exported from bond_netlink.c */ 802 extern struct rtnl_link_ops bond_link_ops; 803 804 /* exported from bond_sysfs_slave.c */ 805 extern const struct sysfs_ops slave_sysfs_ops; 806 807 /* exported from bond_3ad.c */ 808 extern const u8 lacpdu_mcast_addr[]; 809 810 static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) 811 { 812 dev_core_stats_tx_dropped_inc(dev); 813 dev_kfree_skb_any(skb); 814 return NET_XMIT_DROP; 815 } 816 817 #endif /* _NET_BONDING_H */ 818