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_MODE(bond) == BOND_MODE_TLB) && 289 (bond->params.tlb_dynamic_lb == 0); 290 } 291 292 static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) 293 { 294 return (BOND_MODE(bond) == BOND_MODE_8023AD || 295 BOND_MODE(bond) == BOND_MODE_XOR || 296 bond_is_nondyn_tlb(bond)); 297 } 298 299 static inline bool bond_mode_uses_arp(int mode) 300 { 301 return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && 302 mode != BOND_MODE_ALB; 303 } 304 305 static inline bool bond_mode_uses_primary(int mode) 306 { 307 return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || 308 mode == BOND_MODE_ALB; 309 } 310 311 static inline bool bond_uses_primary(struct bonding *bond) 312 { 313 return bond_mode_uses_primary(BOND_MODE(bond)); 314 } 315 316 static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) 317 { 318 struct slave *slave = rcu_dereference(bond->curr_active_slave); 319 320 return bond_uses_primary(bond) && slave ? slave->dev : NULL; 321 } 322 323 static inline bool bond_slave_is_up(struct slave *slave) 324 { 325 return netif_running(slave->dev) && netif_carrier_ok(slave->dev); 326 } 327 328 static inline void bond_set_active_slave(struct slave *slave) 329 { 330 if (slave->backup) { 331 slave->backup = 0; 332 bond_queue_slave_event(slave); 333 bond_lower_state_changed(slave); 334 } 335 } 336 337 static inline void bond_set_backup_slave(struct slave *slave) 338 { 339 if (!slave->backup) { 340 slave->backup = 1; 341 bond_queue_slave_event(slave); 342 bond_lower_state_changed(slave); 343 } 344 } 345 346 static inline void bond_set_slave_state(struct slave *slave, 347 int slave_state, bool notify) 348 { 349 if (slave->backup == slave_state) 350 return; 351 352 slave->backup = slave_state; 353 if (notify) { 354 bond_lower_state_changed(slave); 355 bond_queue_slave_event(slave); 356 slave->should_notify = 0; 357 } else { 358 if (slave->should_notify) 359 slave->should_notify = 0; 360 else 361 slave->should_notify = 1; 362 } 363 } 364 365 static inline void bond_slave_state_change(struct bonding *bond) 366 { 367 struct list_head *iter; 368 struct slave *tmp; 369 370 bond_for_each_slave(bond, tmp, iter) { 371 if (tmp->link == BOND_LINK_UP) 372 bond_set_active_slave(tmp); 373 else if (tmp->link == BOND_LINK_DOWN) 374 bond_set_backup_slave(tmp); 375 } 376 } 377 378 static inline void bond_slave_state_notify(struct bonding *bond) 379 { 380 struct list_head *iter; 381 struct slave *tmp; 382 383 bond_for_each_slave(bond, tmp, iter) { 384 if (tmp->should_notify) { 385 bond_lower_state_changed(tmp); 386 tmp->should_notify = 0; 387 } 388 } 389 } 390 391 static inline int bond_slave_state(struct slave *slave) 392 { 393 return slave->backup; 394 } 395 396 static inline bool bond_is_active_slave(struct slave *slave) 397 { 398 return !bond_slave_state(slave); 399 } 400 401 static inline bool bond_slave_can_tx(struct slave *slave) 402 { 403 return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && 404 bond_is_active_slave(slave); 405 } 406 407 static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) 408 { 409 if (len == ETH_ALEN) { 410 ether_addr_copy(dst, src); 411 return; 412 } 413 414 memcpy(dst, src, len); 415 } 416 417 #define BOND_PRI_RESELECT_ALWAYS 0 418 #define BOND_PRI_RESELECT_BETTER 1 419 #define BOND_PRI_RESELECT_FAILURE 2 420 421 #define BOND_FOM_NONE 0 422 #define BOND_FOM_ACTIVE 1 423 #define BOND_FOM_FOLLOW 2 424 425 #define BOND_ARP_TARGETS_ANY 0 426 #define BOND_ARP_TARGETS_ALL 1 427 428 #define BOND_ARP_VALIDATE_NONE 0 429 #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) 430 #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) 431 #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ 432 BOND_ARP_VALIDATE_BACKUP) 433 #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) 434 #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ 435 BOND_ARP_FILTER) 436 #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ 437 BOND_ARP_FILTER) 438 439 #define BOND_SLAVE_NOTIFY_NOW true 440 #define BOND_SLAVE_NOTIFY_LATER false 441 442 static inline int slave_do_arp_validate(struct bonding *bond, 443 struct slave *slave) 444 { 445 return bond->params.arp_validate & (1 << bond_slave_state(slave)); 446 } 447 448 static inline int slave_do_arp_validate_only(struct bonding *bond) 449 { 450 return bond->params.arp_validate & BOND_ARP_FILTER; 451 } 452 453 static inline int bond_is_ip_target_ok(__be32 addr) 454 { 455 return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); 456 } 457 458 /* Get the oldest arp which we've received on this slave for bond's 459 * arp_targets. 460 */ 461 static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, 462 struct slave *slave) 463 { 464 int i = 1; 465 unsigned long ret = slave->target_last_arp_rx[0]; 466 467 for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) 468 if (time_before(slave->target_last_arp_rx[i], ret)) 469 ret = slave->target_last_arp_rx[i]; 470 471 return ret; 472 } 473 474 static inline unsigned long slave_last_rx(struct bonding *bond, 475 struct slave *slave) 476 { 477 if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) 478 return slave_oldest_target_arp_rx(bond, slave); 479 480 return slave->last_rx; 481 } 482 483 #ifdef CONFIG_NET_POLL_CONTROLLER 484 static inline void bond_netpoll_send_skb(const struct slave *slave, 485 struct sk_buff *skb) 486 { 487 struct netpoll *np = slave->np; 488 489 if (np) 490 netpoll_send_skb(np, skb); 491 } 492 #else 493 static inline void bond_netpoll_send_skb(const struct slave *slave, 494 struct sk_buff *skb) 495 { 496 } 497 #endif 498 499 static inline void bond_set_slave_inactive_flags(struct slave *slave, 500 bool notify) 501 { 502 if (!bond_is_lb(slave->bond)) 503 bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); 504 if (!slave->bond->params.all_slaves_active) 505 slave->inactive = 1; 506 } 507 508 static inline void bond_set_slave_active_flags(struct slave *slave, 509 bool notify) 510 { 511 bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); 512 slave->inactive = 0; 513 } 514 515 static inline bool bond_is_slave_inactive(struct slave *slave) 516 { 517 return slave->inactive; 518 } 519 520 static inline void bond_propose_link_state(struct slave *slave, int state) 521 { 522 slave->link_new_state = state; 523 } 524 525 static inline void bond_commit_link_state(struct slave *slave, bool notify) 526 { 527 if (slave->link == slave->link_new_state) 528 return; 529 530 slave->link = slave->link_new_state; 531 if (notify) { 532 bond_queue_slave_event(slave); 533 bond_lower_state_changed(slave); 534 slave->should_notify_link = 0; 535 } else { 536 if (slave->should_notify_link) 537 slave->should_notify_link = 0; 538 else 539 slave->should_notify_link = 1; 540 } 541 } 542 543 static inline void bond_set_slave_link_state(struct slave *slave, int state, 544 bool notify) 545 { 546 bond_propose_link_state(slave, state); 547 bond_commit_link_state(slave, notify); 548 } 549 550 static inline void bond_slave_link_notify(struct bonding *bond) 551 { 552 struct list_head *iter; 553 struct slave *tmp; 554 555 bond_for_each_slave(bond, tmp, iter) { 556 if (tmp->should_notify_link) { 557 bond_queue_slave_event(tmp); 558 bond_lower_state_changed(tmp); 559 tmp->should_notify_link = 0; 560 } 561 } 562 } 563 564 static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) 565 { 566 struct in_device *in_dev; 567 __be32 addr = 0; 568 569 rcu_read_lock(); 570 in_dev = __in_dev_get_rcu(dev); 571 572 if (in_dev) 573 addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, 574 RT_SCOPE_HOST); 575 rcu_read_unlock(); 576 return addr; 577 } 578 579 struct bond_net { 580 struct net *net; /* Associated network namespace */ 581 struct list_head dev_list; 582 #ifdef CONFIG_PROC_FS 583 struct proc_dir_entry *proc_dir; 584 #endif 585 struct class_attribute class_attr_bonding_masters; 586 }; 587 588 int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); 589 void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); 590 int bond_create(struct net *net, const char *name); 591 int bond_create_sysfs(struct bond_net *net); 592 void bond_destroy_sysfs(struct bond_net *net); 593 void bond_prepare_sysfs_group(struct bonding *bond); 594 int bond_sysfs_slave_add(struct slave *slave); 595 void bond_sysfs_slave_del(struct slave *slave); 596 int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, 597 struct netlink_ext_ack *extack); 598 int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); 599 u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); 600 int bond_set_carrier(struct bonding *bond); 601 void bond_select_active_slave(struct bonding *bond); 602 void bond_change_active_slave(struct bonding *bond, struct slave *new_active); 603 void bond_create_debugfs(void); 604 void bond_destroy_debugfs(void); 605 void bond_debug_register(struct bonding *bond); 606 void bond_debug_unregister(struct bonding *bond); 607 void bond_debug_reregister(struct bonding *bond); 608 const char *bond_mode_name(int mode); 609 void bond_setup(struct net_device *bond_dev); 610 unsigned int bond_get_num_tx_queues(void); 611 int bond_netlink_init(void); 612 void bond_netlink_fini(void); 613 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); 614 const char *bond_slave_link_status(s8 link); 615 struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, 616 struct net_device *end_dev, 617 int level); 618 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); 619 void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); 620 void bond_work_init_all(struct bonding *bond); 621 622 #ifdef CONFIG_PROC_FS 623 void bond_create_proc_entry(struct bonding *bond); 624 void bond_remove_proc_entry(struct bonding *bond); 625 void bond_create_proc_dir(struct bond_net *bn); 626 void bond_destroy_proc_dir(struct bond_net *bn); 627 #else 628 static inline void bond_create_proc_entry(struct bonding *bond) 629 { 630 } 631 632 static inline void bond_remove_proc_entry(struct bonding *bond) 633 { 634 } 635 636 static inline void bond_create_proc_dir(struct bond_net *bn) 637 { 638 } 639 640 static inline void bond_destroy_proc_dir(struct bond_net *bn) 641 { 642 } 643 #endif 644 645 static inline struct slave *bond_slave_has_mac(struct bonding *bond, 646 const u8 *mac) 647 { 648 struct list_head *iter; 649 struct slave *tmp; 650 651 bond_for_each_slave(bond, tmp, iter) 652 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 653 return tmp; 654 655 return NULL; 656 } 657 658 /* Caller must hold rcu_read_lock() for read */ 659 static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond, 660 const u8 *mac) 661 { 662 struct list_head *iter; 663 struct slave *tmp; 664 665 bond_for_each_slave_rcu(bond, tmp, iter) 666 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 667 return tmp; 668 669 return NULL; 670 } 671 672 /* Caller must hold rcu_read_lock() for read */ 673 static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) 674 { 675 struct list_head *iter; 676 struct slave *tmp; 677 struct netdev_hw_addr *ha; 678 679 bond_for_each_slave_rcu(bond, tmp, iter) 680 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 681 return true; 682 683 if (netdev_uc_empty(bond->dev)) 684 return false; 685 686 netdev_for_each_uc_addr(ha, bond->dev) 687 if (ether_addr_equal_64bits(mac, ha->addr)) 688 return true; 689 690 return false; 691 } 692 693 /* Check if the ip is present in arp ip list, or first free slot if ip == 0 694 * Returns -1 if not found, index if found 695 */ 696 static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) 697 { 698 int i; 699 700 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 701 if (targets[i] == ip) 702 return i; 703 else if (targets[i] == 0) 704 break; 705 706 return -1; 707 } 708 709 /* exported from bond_main.c */ 710 extern unsigned int bond_net_id; 711 extern const struct bond_parm_tbl bond_lacp_tbl[]; 712 extern const struct bond_parm_tbl xmit_hashtype_tbl[]; 713 extern const struct bond_parm_tbl arp_validate_tbl[]; 714 extern const struct bond_parm_tbl arp_all_targets_tbl[]; 715 extern const struct bond_parm_tbl fail_over_mac_tbl[]; 716 extern const struct bond_parm_tbl pri_reselect_tbl[]; 717 extern struct bond_parm_tbl ad_select_tbl[]; 718 719 /* exported from bond_netlink.c */ 720 extern struct rtnl_link_ops bond_link_ops; 721 722 static inline void bond_tx_drop(struct net_device *dev, struct sk_buff *skb) 723 { 724 atomic_long_inc(&dev->tx_dropped); 725 dev_kfree_skb_any(skb); 726 } 727 728 #endif /* _NET_BONDING_H */ 729