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 new_link; 158 u8 backup:1, /* indicates backup slave. Value corresponds with 159 BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ 160 inactive:1, /* indicates inactive slave */ 161 should_notify:1, /* indicates whether the state changed */ 162 should_notify_link:1; /* indicates whether the link changed */ 163 u8 duplex; 164 u32 original_mtu; 165 u32 link_failure_count; 166 u32 speed; 167 u16 queue_id; 168 u8 perm_hwaddr[ETH_ALEN]; 169 struct ad_slave_info *ad_info; 170 struct tlb_slave_info tlb_info; 171 #ifdef CONFIG_NET_POLL_CONTROLLER 172 struct netpoll *np; 173 #endif 174 struct kobject kobj; 175 struct rtnl_link_stats64 slave_stats; 176 }; 177 178 struct bond_up_slave { 179 unsigned int count; 180 struct rcu_head rcu; 181 struct slave *arr[0]; 182 }; 183 184 /* 185 * Link pseudo-state only used internally by monitors 186 */ 187 #define BOND_LINK_NOCHANGE -1 188 189 /* 190 * Here are the locking policies for the two bonding locks: 191 * Get rcu_read_lock when reading or RTNL when writing slave list. 192 */ 193 struct bonding { 194 struct net_device *dev; /* first - useful for panic debug */ 195 struct slave __rcu *curr_active_slave; 196 struct slave __rcu *current_arp_slave; 197 struct slave __rcu *primary_slave; 198 struct bond_up_slave __rcu *slave_arr; /* Array of usable slaves */ 199 bool force_primary; 200 s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ 201 int (*recv_probe)(const struct sk_buff *, struct bonding *, 202 struct slave *); 203 /* mode_lock is used for mode-specific locking needs, currently used by: 204 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and 205 * bond_3ad_state_machine_handler() concurrently and also 206 * the access to the state machine shared variables. 207 * TLB mode (5) - to sync the use and modifications of its hash table 208 * ALB mode (6) - to sync the use and modifications of its hash table 209 */ 210 spinlock_t mode_lock; 211 spinlock_t stats_lock; 212 u8 send_peer_notif; 213 u8 igmp_retrans; 214 #ifdef CONFIG_PROC_FS 215 struct proc_dir_entry *proc_entry; 216 char proc_file_name[IFNAMSIZ]; 217 #endif /* CONFIG_PROC_FS */ 218 struct list_head bond_list; 219 u32 rr_tx_counter; 220 struct ad_bond_info ad_info; 221 struct alb_bond_info alb_info; 222 struct bond_params params; 223 struct workqueue_struct *wq; 224 struct delayed_work mii_work; 225 struct delayed_work arp_work; 226 struct delayed_work alb_work; 227 struct delayed_work ad_work; 228 struct delayed_work mcast_work; 229 struct delayed_work slave_arr_work; 230 #ifdef CONFIG_DEBUG_FS 231 /* debugging support via debugfs */ 232 struct dentry *debug_dir; 233 #endif /* CONFIG_DEBUG_FS */ 234 struct rtnl_link_stats64 bond_stats; 235 }; 236 237 #define bond_slave_get_rcu(dev) \ 238 ((struct slave *) rcu_dereference(dev->rx_handler_data)) 239 240 #define bond_slave_get_rtnl(dev) \ 241 ((struct slave *) rtnl_dereference(dev->rx_handler_data)) 242 243 void bond_queue_slave_event(struct slave *slave); 244 void bond_lower_state_changed(struct slave *slave); 245 246 struct bond_vlan_tag { 247 __be16 vlan_proto; 248 unsigned short vlan_id; 249 }; 250 251 /** 252 * Returns NULL if the net_device does not belong to any of the bond's slaves 253 * 254 * Caller must hold bond lock for read 255 */ 256 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, 257 struct net_device *slave_dev) 258 { 259 return netdev_lower_dev_get_private(bond->dev, slave_dev); 260 } 261 262 static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) 263 { 264 return slave->bond; 265 } 266 267 static inline bool bond_should_override_tx_queue(struct bonding *bond) 268 { 269 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || 270 BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; 271 } 272 273 static inline bool bond_is_lb(const struct bonding *bond) 274 { 275 return BOND_MODE(bond) == BOND_MODE_TLB || 276 BOND_MODE(bond) == BOND_MODE_ALB; 277 } 278 279 static inline bool bond_is_nondyn_tlb(const struct bonding *bond) 280 { 281 return (BOND_MODE(bond) == BOND_MODE_TLB) && 282 (bond->params.tlb_dynamic_lb == 0); 283 } 284 285 static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) 286 { 287 return (BOND_MODE(bond) == BOND_MODE_8023AD || 288 BOND_MODE(bond) == BOND_MODE_XOR || 289 bond_is_nondyn_tlb(bond)); 290 } 291 292 static inline bool bond_mode_uses_arp(int mode) 293 { 294 return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && 295 mode != BOND_MODE_ALB; 296 } 297 298 static inline bool bond_mode_uses_primary(int mode) 299 { 300 return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || 301 mode == BOND_MODE_ALB; 302 } 303 304 static inline bool bond_uses_primary(struct bonding *bond) 305 { 306 return bond_mode_uses_primary(BOND_MODE(bond)); 307 } 308 309 static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) 310 { 311 struct slave *slave = rcu_dereference(bond->curr_active_slave); 312 313 return bond_uses_primary(bond) && slave ? slave->dev : NULL; 314 } 315 316 static inline bool bond_slave_is_up(struct slave *slave) 317 { 318 return netif_running(slave->dev) && netif_carrier_ok(slave->dev); 319 } 320 321 static inline void bond_set_active_slave(struct slave *slave) 322 { 323 if (slave->backup) { 324 slave->backup = 0; 325 bond_queue_slave_event(slave); 326 bond_lower_state_changed(slave); 327 rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); 328 } 329 } 330 331 static inline void bond_set_backup_slave(struct slave *slave) 332 { 333 if (!slave->backup) { 334 slave->backup = 1; 335 bond_queue_slave_event(slave); 336 bond_lower_state_changed(slave); 337 rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); 338 } 339 } 340 341 static inline void bond_set_slave_state(struct slave *slave, 342 int slave_state, bool notify) 343 { 344 if (slave->backup == slave_state) 345 return; 346 347 slave->backup = slave_state; 348 if (notify) { 349 bond_lower_state_changed(slave); 350 rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); 351 bond_queue_slave_event(slave); 352 slave->should_notify = 0; 353 } else { 354 if (slave->should_notify) 355 slave->should_notify = 0; 356 else 357 slave->should_notify = 1; 358 } 359 } 360 361 static inline void bond_slave_state_change(struct bonding *bond) 362 { 363 struct list_head *iter; 364 struct slave *tmp; 365 366 bond_for_each_slave(bond, tmp, iter) { 367 if (tmp->link == BOND_LINK_UP) 368 bond_set_active_slave(tmp); 369 else if (tmp->link == BOND_LINK_DOWN) 370 bond_set_backup_slave(tmp); 371 } 372 } 373 374 static inline void bond_slave_state_notify(struct bonding *bond) 375 { 376 struct list_head *iter; 377 struct slave *tmp; 378 379 bond_for_each_slave(bond, tmp, iter) { 380 if (tmp->should_notify) { 381 bond_lower_state_changed(tmp); 382 rtmsg_ifinfo(RTM_NEWLINK, tmp->dev, 0, GFP_ATOMIC); 383 tmp->should_notify = 0; 384 } 385 } 386 } 387 388 static inline int bond_slave_state(struct slave *slave) 389 { 390 return slave->backup; 391 } 392 393 static inline bool bond_is_active_slave(struct slave *slave) 394 { 395 return !bond_slave_state(slave); 396 } 397 398 static inline bool bond_slave_can_tx(struct slave *slave) 399 { 400 return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && 401 bond_is_active_slave(slave); 402 } 403 404 #define BOND_PRI_RESELECT_ALWAYS 0 405 #define BOND_PRI_RESELECT_BETTER 1 406 #define BOND_PRI_RESELECT_FAILURE 2 407 408 #define BOND_FOM_NONE 0 409 #define BOND_FOM_ACTIVE 1 410 #define BOND_FOM_FOLLOW 2 411 412 #define BOND_ARP_TARGETS_ANY 0 413 #define BOND_ARP_TARGETS_ALL 1 414 415 #define BOND_ARP_VALIDATE_NONE 0 416 #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) 417 #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) 418 #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ 419 BOND_ARP_VALIDATE_BACKUP) 420 #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) 421 #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ 422 BOND_ARP_FILTER) 423 #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ 424 BOND_ARP_FILTER) 425 426 #define BOND_SLAVE_NOTIFY_NOW true 427 #define BOND_SLAVE_NOTIFY_LATER false 428 429 static inline int slave_do_arp_validate(struct bonding *bond, 430 struct slave *slave) 431 { 432 return bond->params.arp_validate & (1 << bond_slave_state(slave)); 433 } 434 435 static inline int slave_do_arp_validate_only(struct bonding *bond) 436 { 437 return bond->params.arp_validate & BOND_ARP_FILTER; 438 } 439 440 static inline int bond_is_ip_target_ok(__be32 addr) 441 { 442 return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); 443 } 444 445 /* Get the oldest arp which we've received on this slave for bond's 446 * arp_targets. 447 */ 448 static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, 449 struct slave *slave) 450 { 451 int i = 1; 452 unsigned long ret = slave->target_last_arp_rx[0]; 453 454 for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) 455 if (time_before(slave->target_last_arp_rx[i], ret)) 456 ret = slave->target_last_arp_rx[i]; 457 458 return ret; 459 } 460 461 static inline unsigned long slave_last_rx(struct bonding *bond, 462 struct slave *slave) 463 { 464 if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) 465 return slave_oldest_target_arp_rx(bond, slave); 466 467 return slave->last_rx; 468 } 469 470 #ifdef CONFIG_NET_POLL_CONTROLLER 471 static inline void bond_netpoll_send_skb(const struct slave *slave, 472 struct sk_buff *skb) 473 { 474 struct netpoll *np = slave->np; 475 476 if (np) 477 netpoll_send_skb(np, skb); 478 } 479 #else 480 static inline void bond_netpoll_send_skb(const struct slave *slave, 481 struct sk_buff *skb) 482 { 483 } 484 #endif 485 486 static inline void bond_set_slave_inactive_flags(struct slave *slave, 487 bool notify) 488 { 489 if (!bond_is_lb(slave->bond)) 490 bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); 491 if (!slave->bond->params.all_slaves_active) 492 slave->inactive = 1; 493 } 494 495 static inline void bond_set_slave_active_flags(struct slave *slave, 496 bool notify) 497 { 498 bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); 499 slave->inactive = 0; 500 } 501 502 static inline bool bond_is_slave_inactive(struct slave *slave) 503 { 504 return slave->inactive; 505 } 506 507 static inline void bond_set_slave_link_state(struct slave *slave, int state, 508 bool notify) 509 { 510 if (slave->link == state) 511 return; 512 513 slave->link = state; 514 if (notify) { 515 bond_queue_slave_event(slave); 516 bond_lower_state_changed(slave); 517 slave->should_notify_link = 0; 518 } else { 519 if (slave->should_notify_link) 520 slave->should_notify_link = 0; 521 else 522 slave->should_notify_link = 1; 523 } 524 } 525 526 static inline void bond_slave_link_notify(struct bonding *bond) 527 { 528 struct list_head *iter; 529 struct slave *tmp; 530 531 bond_for_each_slave(bond, tmp, iter) { 532 if (tmp->should_notify_link) { 533 bond_queue_slave_event(tmp); 534 bond_lower_state_changed(tmp); 535 tmp->should_notify_link = 0; 536 } 537 } 538 } 539 540 static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) 541 { 542 struct in_device *in_dev; 543 __be32 addr = 0; 544 545 rcu_read_lock(); 546 in_dev = __in_dev_get_rcu(dev); 547 548 if (in_dev) 549 addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, 550 RT_SCOPE_HOST); 551 rcu_read_unlock(); 552 return addr; 553 } 554 555 struct bond_net { 556 struct net *net; /* Associated network namespace */ 557 struct list_head dev_list; 558 #ifdef CONFIG_PROC_FS 559 struct proc_dir_entry *proc_dir; 560 #endif 561 struct class_attribute class_attr_bonding_masters; 562 }; 563 564 int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); 565 void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); 566 int bond_create(struct net *net, const char *name); 567 int bond_create_sysfs(struct bond_net *net); 568 void bond_destroy_sysfs(struct bond_net *net); 569 void bond_prepare_sysfs_group(struct bonding *bond); 570 int bond_sysfs_slave_add(struct slave *slave); 571 void bond_sysfs_slave_del(struct slave *slave); 572 int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev); 573 int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); 574 u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); 575 int bond_set_carrier(struct bonding *bond); 576 void bond_select_active_slave(struct bonding *bond); 577 void bond_change_active_slave(struct bonding *bond, struct slave *new_active); 578 void bond_create_debugfs(void); 579 void bond_destroy_debugfs(void); 580 void bond_debug_register(struct bonding *bond); 581 void bond_debug_unregister(struct bonding *bond); 582 void bond_debug_reregister(struct bonding *bond); 583 const char *bond_mode_name(int mode); 584 void bond_setup(struct net_device *bond_dev); 585 unsigned int bond_get_num_tx_queues(void); 586 int bond_netlink_init(void); 587 void bond_netlink_fini(void); 588 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); 589 const char *bond_slave_link_status(s8 link); 590 struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, 591 struct net_device *end_dev, 592 int level); 593 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); 594 void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); 595 596 #ifdef CONFIG_PROC_FS 597 void bond_create_proc_entry(struct bonding *bond); 598 void bond_remove_proc_entry(struct bonding *bond); 599 void bond_create_proc_dir(struct bond_net *bn); 600 void bond_destroy_proc_dir(struct bond_net *bn); 601 #else 602 static inline void bond_create_proc_entry(struct bonding *bond) 603 { 604 } 605 606 static inline void bond_remove_proc_entry(struct bonding *bond) 607 { 608 } 609 610 static inline void bond_create_proc_dir(struct bond_net *bn) 611 { 612 } 613 614 static inline void bond_destroy_proc_dir(struct bond_net *bn) 615 { 616 } 617 #endif 618 619 static inline struct slave *bond_slave_has_mac(struct bonding *bond, 620 const u8 *mac) 621 { 622 struct list_head *iter; 623 struct slave *tmp; 624 625 bond_for_each_slave(bond, tmp, iter) 626 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 627 return tmp; 628 629 return NULL; 630 } 631 632 /* Caller must hold rcu_read_lock() for read */ 633 static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond, 634 const u8 *mac) 635 { 636 struct list_head *iter; 637 struct slave *tmp; 638 639 bond_for_each_slave_rcu(bond, tmp, iter) 640 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 641 return tmp; 642 643 return NULL; 644 } 645 646 /* Caller must hold rcu_read_lock() for read */ 647 static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) 648 { 649 struct list_head *iter; 650 struct slave *tmp; 651 struct netdev_hw_addr *ha; 652 653 bond_for_each_slave_rcu(bond, tmp, iter) 654 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 655 return true; 656 657 if (netdev_uc_empty(bond->dev)) 658 return false; 659 660 netdev_for_each_uc_addr(ha, bond->dev) 661 if (ether_addr_equal_64bits(mac, ha->addr)) 662 return true; 663 664 return false; 665 } 666 667 /* Check if the ip is present in arp ip list, or first free slot if ip == 0 668 * Returns -1 if not found, index if found 669 */ 670 static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) 671 { 672 int i; 673 674 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 675 if (targets[i] == ip) 676 return i; 677 else if (targets[i] == 0) 678 break; 679 680 return -1; 681 } 682 683 /* exported from bond_main.c */ 684 extern int bond_net_id; 685 extern const struct bond_parm_tbl bond_lacp_tbl[]; 686 extern const struct bond_parm_tbl xmit_hashtype_tbl[]; 687 extern const struct bond_parm_tbl arp_validate_tbl[]; 688 extern const struct bond_parm_tbl arp_all_targets_tbl[]; 689 extern const struct bond_parm_tbl fail_over_mac_tbl[]; 690 extern const struct bond_parm_tbl pri_reselect_tbl[]; 691 extern struct bond_parm_tbl ad_select_tbl[]; 692 693 /* exported from bond_netlink.c */ 694 extern struct rtnl_link_ops bond_link_ops; 695 696 static inline void bond_tx_drop(struct net_device *dev, struct sk_buff *skb) 697 { 698 atomic_long_inc(&dev->tx_dropped); 699 dev_kfree_skb_any(skb); 700 } 701 702 #endif /* _NET_BONDING_H */ 703