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