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