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