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 /** 73 * bond_for_each_slave - iterate over all slaves 74 * @bond: the bond holding this list 75 * @pos: current slave 76 * @iter: list_head * iterator 77 * 78 * Caller must hold RTNL 79 */ 80 #define bond_for_each_slave(bond, pos, iter) \ 81 netdev_for_each_lower_private((bond)->dev, pos, iter) 82 83 /* Caller must have rcu_read_lock */ 84 #define bond_for_each_slave_rcu(bond, pos, iter) \ 85 netdev_for_each_lower_private_rcu((bond)->dev, pos, iter) 86 87 #define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ 88 NETIF_F_GSO_ESP) 89 90 #ifdef CONFIG_NET_POLL_CONTROLLER 91 DECLARE_STATIC_KEY_FALSE(netpoll_block_tx); 92 93 static inline void block_netpoll_tx(void) 94 { 95 static_branch_inc(&netpoll_block_tx); 96 } 97 98 static inline void unblock_netpoll_tx(void) 99 { 100 static_branch_dec(&netpoll_block_tx); 101 } 102 103 static inline int is_netpoll_tx_blocked(struct net_device *dev) 104 { 105 if (static_branch_unlikely(&netpoll_block_tx)) 106 return netpoll_tx_running(dev); 107 return 0; 108 } 109 #else 110 #define block_netpoll_tx() 111 #define unblock_netpoll_tx() 112 #define is_netpoll_tx_blocked(dev) (0) 113 #endif 114 115 DECLARE_STATIC_KEY_FALSE(bond_bcast_neigh_enabled); 116 117 struct bond_params { 118 int mode; 119 int xmit_policy; 120 int miimon; 121 u8 num_peer_notif; 122 u8 missed_max; 123 int arp_interval; 124 int arp_validate; 125 int arp_all_targets; 126 int fail_over_mac; 127 int updelay; 128 int downdelay; 129 int peer_notif_delay; 130 int lacp_active; 131 int lacp_fast; 132 int lacp_strict; 133 unsigned int min_links; 134 int ad_select; 135 char primary[IFNAMSIZ]; 136 int primary_reselect; 137 __be32 arp_targets[BOND_MAX_ARP_TARGETS]; 138 int tx_queues; 139 int all_slaves_active; 140 int resend_igmp; 141 int lp_interval; 142 int packets_per_slave; 143 int tlb_dynamic_lb; 144 struct reciprocal_value reciprocal_packets_per_slave; 145 u16 ad_actor_sys_prio; 146 u16 ad_user_port_key; 147 #if IS_ENABLED(CONFIG_IPV6) 148 struct in6_addr ns_targets[BOND_MAX_NS_TARGETS]; 149 #endif 150 int coupled_control; 151 int broadcast_neighbor; 152 153 /* 2 bytes of padding : see ether_addr_equal_64bits() */ 154 u8 ad_actor_system[ETH_ALEN + 2]; 155 }; 156 157 struct slave { 158 struct net_device *dev; /* first - useful for panic debug */ 159 struct bonding *bond; /* our master */ 160 int delay; 161 /* all 4 in jiffies */ 162 unsigned long last_link_up; 163 unsigned long last_tx; 164 unsigned long last_rx; 165 unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; 166 s8 link; /* one of BOND_LINK_XXXX */ 167 s8 link_new_state; /* one of BOND_LINK_XXXX */ 168 u8 backup:1, /* indicates backup slave. Value corresponds with 169 BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ 170 inactive:1, /* indicates inactive slave */ 171 rx_disabled:1, /* indicates whether slave's Rx is disabled */ 172 should_notify:1, /* indicates whether the state changed */ 173 should_notify_link:1; /* indicates whether the link changed */ 174 u8 duplex; 175 u32 original_mtu; 176 u32 link_failure_count; 177 u32 speed; 178 u16 queue_id; 179 u8 perm_hwaddr[MAX_ADDR_LEN]; 180 int prio; 181 struct ad_slave_info *ad_info; 182 struct tlb_slave_info tlb_info; 183 #ifdef CONFIG_NET_POLL_CONTROLLER 184 struct netpoll *np; 185 #endif 186 struct delayed_work notify_work; 187 struct kobject kobj; 188 struct rtnl_link_stats64 slave_stats; 189 }; 190 191 static inline struct slave *to_slave(struct kobject *kobj) 192 { 193 return container_of(kobj, struct slave, kobj); 194 } 195 196 struct bond_up_slave { 197 unsigned int count; 198 struct rcu_head rcu; 199 struct slave *arr[]; 200 }; 201 202 /* 203 * Link pseudo-state only used internally by monitors 204 */ 205 #define BOND_LINK_NOCHANGE -1 206 207 struct bond_ipsec { 208 struct list_head list; 209 struct xfrm_state *xs; 210 }; 211 212 /* 213 * Here are the locking policies for the two bonding locks: 214 * Get rcu_read_lock when reading or RTNL when writing slave list. 215 */ 216 struct bonding { 217 struct net_device *dev; /* first - useful for panic debug */ 218 struct slave __rcu *curr_active_slave; 219 struct slave __rcu *current_arp_slave; 220 struct slave __rcu *primary_slave; 221 struct bond_up_slave __rcu *usable_slaves; 222 struct bond_up_slave __rcu *all_slaves; 223 bool force_primary; 224 bool notifier_ctx; 225 s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ 226 int (*recv_probe)(const struct sk_buff *, struct bonding *, 227 struct slave *); 228 /* mode_lock is used for mode-specific locking needs, currently used by: 229 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and 230 * bond_3ad_state_machine_handler() concurrently and also 231 * the access to the state machine shared variables. 232 * TLB mode (5) - to sync the use and modifications of its hash table 233 * ALB mode (6) - to sync the use and modifications of its hash table 234 */ 235 spinlock_t mode_lock; 236 spinlock_t stats_lock; 237 u32 send_peer_notif; 238 u8 igmp_retrans; 239 #ifdef CONFIG_PROC_FS 240 struct proc_dir_entry *proc_entry; 241 char proc_file_name[IFNAMSIZ]; 242 #endif /* CONFIG_PROC_FS */ 243 struct list_head bond_list; 244 u32 __percpu *rr_tx_counter; 245 struct ad_bond_info ad_info; 246 struct alb_bond_info alb_info; 247 struct bond_params params; 248 struct workqueue_struct *wq; 249 struct delayed_work mii_work; 250 struct delayed_work arp_work; 251 struct delayed_work alb_work; 252 struct delayed_work ad_work; 253 struct delayed_work mcast_work; 254 struct delayed_work slave_arr_work; 255 struct delayed_work peer_notify_work; 256 #ifdef CONFIG_DEBUG_FS 257 /* debugging support via debugfs */ 258 struct dentry *debug_dir; 259 #endif /* CONFIG_DEBUG_FS */ 260 struct rtnl_link_stats64 bond_stats; 261 #ifdef CONFIG_XFRM_OFFLOAD 262 struct list_head ipsec_list; 263 /* protecting ipsec_list */ 264 struct mutex ipsec_lock; 265 #endif /* CONFIG_XFRM_OFFLOAD */ 266 struct bpf_prog *xdp_prog; 267 }; 268 269 #define bond_slave_get_rcu(dev) \ 270 ((struct slave *) rcu_dereference(dev->rx_handler_data)) 271 272 #define bond_slave_get_rtnl(dev) \ 273 ((struct slave *) rtnl_dereference(dev->rx_handler_data)) 274 275 void bond_queue_slave_event(struct slave *slave); 276 void bond_lower_state_changed(struct slave *slave); 277 278 struct bond_vlan_tag { 279 __be16 vlan_proto; 280 unsigned short vlan_id; 281 }; 282 283 /* 284 * Returns NULL if the net_device does not belong to any of the bond's slaves 285 * 286 * Caller must hold bond lock for read 287 */ 288 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, 289 struct net_device *slave_dev) 290 { 291 return netdev_lower_dev_get_private(bond->dev, slave_dev); 292 } 293 294 static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) 295 { 296 return slave->bond; 297 } 298 299 static inline bool bond_should_override_tx_queue(struct bonding *bond) 300 { 301 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || 302 BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; 303 } 304 305 static inline bool bond_is_lb(const struct bonding *bond) 306 { 307 return BOND_MODE(bond) == BOND_MODE_TLB || 308 BOND_MODE(bond) == BOND_MODE_ALB; 309 } 310 311 static inline bool bond_needs_speed_duplex(const struct bonding *bond) 312 { 313 return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond); 314 } 315 316 static inline bool bond_is_nondyn_tlb(const struct bonding *bond) 317 { 318 return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); 319 } 320 321 static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) 322 { 323 return (BOND_MODE(bond) == BOND_MODE_8023AD || 324 BOND_MODE(bond) == BOND_MODE_XOR || 325 BOND_MODE(bond) == BOND_MODE_TLB || 326 BOND_MODE(bond) == BOND_MODE_ALB); 327 } 328 329 static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) 330 { 331 return (BOND_MODE(bond) == BOND_MODE_8023AD || 332 BOND_MODE(bond) == BOND_MODE_XOR || 333 bond_is_nondyn_tlb(bond)); 334 } 335 336 static inline bool bond_mode_uses_arp(int mode) 337 { 338 return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && 339 mode != BOND_MODE_ALB; 340 } 341 342 static inline bool bond_mode_uses_primary(int mode) 343 { 344 return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || 345 mode == BOND_MODE_ALB; 346 } 347 348 static inline bool bond_uses_primary(struct bonding *bond) 349 { 350 return bond_mode_uses_primary(BOND_MODE(bond)); 351 } 352 353 static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) 354 { 355 struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave); 356 357 return bond_uses_primary(bond) && slave ? slave->dev : NULL; 358 } 359 360 static inline bool bond_slave_is_up(struct slave *slave) 361 { 362 return netif_running(slave->dev) && netif_carrier_ok(slave->dev); 363 } 364 365 static inline void bond_set_active_slave(struct slave *slave) 366 { 367 if (slave->backup) { 368 slave->backup = 0; 369 bond_queue_slave_event(slave); 370 bond_lower_state_changed(slave); 371 } 372 } 373 374 static inline void bond_set_backup_slave(struct slave *slave) 375 { 376 if (!slave->backup) { 377 slave->backup = 1; 378 bond_queue_slave_event(slave); 379 bond_lower_state_changed(slave); 380 } 381 } 382 383 static inline void bond_set_slave_state(struct slave *slave, 384 int slave_state, bool notify) 385 { 386 if (slave->backup == slave_state) 387 return; 388 389 slave->backup = slave_state; 390 if (notify) { 391 bond_lower_state_changed(slave); 392 bond_queue_slave_event(slave); 393 slave->should_notify = 0; 394 } else { 395 if (slave->should_notify) 396 slave->should_notify = 0; 397 else 398 slave->should_notify = 1; 399 } 400 } 401 402 static inline void bond_slave_state_change(struct bonding *bond) 403 { 404 struct list_head *iter; 405 struct slave *tmp; 406 407 bond_for_each_slave(bond, tmp, iter) { 408 if (tmp->link == BOND_LINK_UP) 409 bond_set_active_slave(tmp); 410 else if (tmp->link == BOND_LINK_DOWN) 411 bond_set_backup_slave(tmp); 412 } 413 } 414 415 static inline void bond_slave_state_notify(struct bonding *bond) 416 { 417 struct list_head *iter; 418 struct slave *tmp; 419 420 bond_for_each_slave(bond, tmp, iter) { 421 if (tmp->should_notify) { 422 bond_lower_state_changed(tmp); 423 tmp->should_notify = 0; 424 } 425 } 426 } 427 428 static inline int bond_slave_state(struct slave *slave) 429 { 430 return slave->backup; 431 } 432 433 static inline bool bond_is_active_slave(struct slave *slave) 434 { 435 return !bond_slave_state(slave); 436 } 437 438 static inline bool bond_slave_can_tx(struct slave *slave) 439 { 440 return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && 441 bond_is_active_slave(slave); 442 } 443 444 static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) 445 { 446 struct slave *slave; 447 bool active; 448 449 rcu_read_lock(); 450 slave = bond_slave_get_rcu(slave_dev); 451 active = bond_is_active_slave(slave); 452 rcu_read_unlock(); 453 454 return active; 455 } 456 457 static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) 458 { 459 if (len == ETH_ALEN) { 460 ether_addr_copy(dst, src); 461 return; 462 } 463 464 memcpy(dst, src, len); 465 } 466 467 #define BOND_PRI_RESELECT_ALWAYS 0 468 #define BOND_PRI_RESELECT_BETTER 1 469 #define BOND_PRI_RESELECT_FAILURE 2 470 471 #define BOND_FOM_NONE 0 472 #define BOND_FOM_ACTIVE 1 473 #define BOND_FOM_FOLLOW 2 474 475 #define BOND_ARP_TARGETS_ANY 0 476 #define BOND_ARP_TARGETS_ALL 1 477 478 #define BOND_ARP_VALIDATE_NONE 0 479 #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) 480 #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) 481 #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ 482 BOND_ARP_VALIDATE_BACKUP) 483 #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) 484 #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ 485 BOND_ARP_FILTER) 486 #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ 487 BOND_ARP_FILTER) 488 489 #define BOND_SLAVE_NOTIFY_NOW true 490 #define BOND_SLAVE_NOTIFY_LATER false 491 492 static inline int slave_do_arp_validate(struct bonding *bond, 493 struct slave *slave) 494 { 495 return bond->params.arp_validate & (1 << bond_slave_state(slave)); 496 } 497 498 static inline int slave_do_arp_validate_only(struct bonding *bond) 499 { 500 return bond->params.arp_validate & BOND_ARP_FILTER; 501 } 502 503 static inline int bond_is_ip_target_ok(__be32 addr) 504 { 505 return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); 506 } 507 508 #if IS_ENABLED(CONFIG_IPV6) 509 static inline int bond_is_ip6_target_ok(struct in6_addr *addr) 510 { 511 return !ipv6_addr_any(addr) && 512 !ipv6_addr_loopback(addr) && 513 !ipv6_addr_is_multicast(addr); 514 } 515 #endif 516 517 /* Get the oldest arp which we've received on this slave for bond's 518 * arp_targets. 519 */ 520 static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, 521 struct slave *slave) 522 { 523 unsigned long tmp, ret = READ_ONCE(slave->target_last_arp_rx[0]); 524 int i = 1; 525 526 for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) { 527 tmp = READ_ONCE(slave->target_last_arp_rx[i]); 528 if (time_before(tmp, ret)) 529 ret = tmp; 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 READ_ONCE(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(int mode, int xmit_policy); 701 bool bond_xdp_check(struct bonding *bond, int mode); 702 void bond_setup(struct net_device *bond_dev); 703 unsigned int bond_get_num_tx_queues(void); 704 int bond_netlink_init(void); 705 void bond_netlink_fini(void); 706 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); 707 const char *bond_slave_link_status(s8 link); 708 struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, 709 struct net_device *end_dev, 710 int level); 711 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); 712 void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); 713 void bond_peer_notify_work_rearm(struct bonding *bond, unsigned long delay); 714 void bond_work_init_all(struct bonding *bond); 715 void bond_work_cancel_all(struct bonding *bond); 716 717 #ifdef CONFIG_PROC_FS 718 void bond_create_proc_entry(struct bonding *bond); 719 void bond_remove_proc_entry(struct bonding *bond); 720 void bond_create_proc_dir(struct bond_net *bn); 721 void bond_destroy_proc_dir(struct bond_net *bn); 722 #else 723 static inline void bond_create_proc_entry(struct bonding *bond) 724 { 725 } 726 727 static inline void bond_remove_proc_entry(struct bonding *bond) 728 { 729 } 730 731 static inline void bond_create_proc_dir(struct bond_net *bn) 732 { 733 } 734 735 static inline void bond_destroy_proc_dir(struct bond_net *bn) 736 { 737 } 738 #endif 739 740 static inline struct slave *bond_slave_has_mac(struct bonding *bond, 741 const u8 *mac) 742 { 743 struct list_head *iter; 744 struct slave *tmp; 745 746 bond_for_each_slave(bond, tmp, iter) 747 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 748 return tmp; 749 750 return NULL; 751 } 752 753 /* Caller must hold rcu_read_lock() for read */ 754 static inline bool bond_slave_has_mac_rcu(struct bonding *bond, const u8 *mac) 755 { 756 struct list_head *iter; 757 struct slave *tmp; 758 759 bond_for_each_slave_rcu(bond, tmp, iter) 760 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 761 return true; 762 return false; 763 } 764 765 /* Check if the ip is present in arp ip list, or first free slot if ip == 0 766 * Returns -1 if not found, index if found 767 */ 768 static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) 769 { 770 int i; 771 772 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 773 if (targets[i] == ip) 774 return i; 775 else if (targets[i] == 0) 776 break; 777 778 return -1; 779 } 780 781 #if IS_ENABLED(CONFIG_IPV6) 782 static inline int bond_get_targets_ip6(struct in6_addr *targets, struct in6_addr *ip) 783 { 784 struct in6_addr mcaddr; 785 int i; 786 787 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) { 788 addrconf_addr_solict_mult(&targets[i], &mcaddr); 789 if ((ipv6_addr_equal(&targets[i], ip)) || 790 (ipv6_addr_equal(&mcaddr, ip))) 791 return i; 792 else if (ipv6_addr_any(&targets[i])) 793 break; 794 } 795 796 return -1; 797 } 798 #endif 799 800 /* exported from bond_main.c */ 801 extern unsigned int bond_net_id; 802 803 /* exported from bond_netlink.c */ 804 extern struct rtnl_link_ops bond_link_ops; 805 806 /* exported from bond_sysfs_slave.c */ 807 extern const struct sysfs_ops slave_sysfs_ops; 808 809 /* exported from bond_3ad.c */ 810 extern const u8 lacpdu_mcast_addr[]; 811 812 static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) 813 { 814 dev_core_stats_tx_dropped_inc(dev); 815 dev_kfree_skb_any(skb); 816 return NET_XMIT_DROP; 817 } 818 819 #endif /* _NET_BONDING_H */ 820