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 slave_info(bond_dev, slave_dev, fmt, ...) \ 42 netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 43 #define slave_warn(bond_dev, slave_dev, fmt, ...) \ 44 netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 45 #define slave_dbg(bond_dev, slave_dev, fmt, ...) \ 46 netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 47 #define slave_err(bond_dev, slave_dev, fmt, ...) \ 48 netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 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 #define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ 90 NETIF_F_GSO_ESP) 91 92 #define BOND_TLS_FEATURES (NETIF_F_HW_TLS_TX | NETIF_F_HW_TLS_RX) 93 94 #ifdef CONFIG_NET_POLL_CONTROLLER 95 extern atomic_t netpoll_block_tx; 96 97 static inline void block_netpoll_tx(void) 98 { 99 atomic_inc(&netpoll_block_tx); 100 } 101 102 static inline void unblock_netpoll_tx(void) 103 { 104 atomic_dec(&netpoll_block_tx); 105 } 106 107 static inline int is_netpoll_tx_blocked(struct net_device *dev) 108 { 109 if (unlikely(netpoll_tx_running(dev))) 110 return atomic_read(&netpoll_block_tx); 111 return 0; 112 } 113 #else 114 #define block_netpoll_tx() 115 #define unblock_netpoll_tx() 116 #define is_netpoll_tx_blocked(dev) (0) 117 #endif 118 119 struct bond_params { 120 int mode; 121 int xmit_policy; 122 int miimon; 123 u8 num_peer_notif; 124 int arp_interval; 125 int arp_validate; 126 int arp_all_targets; 127 int use_carrier; 128 int fail_over_mac; 129 int updelay; 130 int downdelay; 131 int peer_notif_delay; 132 int lacp_fast; 133 unsigned int min_links; 134 int ad_select; 135 char primary[IFNAMSIZ]; 136 int primary_reselect; 137 __be32 arp_targets[BOND_MAX_ARP_TARGETS]; 138 int tx_queues; 139 int all_slaves_active; 140 int resend_igmp; 141 int lp_interval; 142 int packets_per_slave; 143 int tlb_dynamic_lb; 144 struct reciprocal_value reciprocal_packets_per_slave; 145 u16 ad_actor_sys_prio; 146 u16 ad_user_port_key; 147 148 /* 2 bytes of padding : see ether_addr_equal_64bits() */ 149 u8 ad_actor_system[ETH_ALEN + 2]; 150 }; 151 152 struct bond_parm_tbl { 153 char *modename; 154 int mode; 155 }; 156 157 struct slave { 158 struct net_device *dev; /* first - useful for panic debug */ 159 struct bonding *bond; /* our master */ 160 int delay; 161 /* all three in jiffies */ 162 unsigned long last_link_up; 163 unsigned long last_rx; 164 unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; 165 s8 link; /* one of BOND_LINK_XXXX */ 166 s8 link_new_state; /* one of BOND_LINK_XXXX */ 167 u8 backup:1, /* indicates backup slave. Value corresponds with 168 BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ 169 inactive:1, /* indicates inactive slave */ 170 should_notify:1, /* indicates whether the state changed */ 171 should_notify_link:1; /* indicates whether the link changed */ 172 u8 duplex; 173 u32 original_mtu; 174 u32 link_failure_count; 175 u32 speed; 176 u16 queue_id; 177 u8 perm_hwaddr[MAX_ADDR_LEN]; 178 struct ad_slave_info *ad_info; 179 struct tlb_slave_info tlb_info; 180 #ifdef CONFIG_NET_POLL_CONTROLLER 181 struct netpoll *np; 182 #endif 183 struct delayed_work notify_work; 184 struct kobject kobj; 185 struct rtnl_link_stats64 slave_stats; 186 }; 187 188 static inline struct slave *to_slave(struct kobject *kobj) 189 { 190 return container_of(kobj, struct slave, kobj); 191 } 192 193 struct bond_up_slave { 194 unsigned int count; 195 struct rcu_head rcu; 196 struct slave *arr[]; 197 }; 198 199 /* 200 * Link pseudo-state only used internally by monitors 201 */ 202 #define BOND_LINK_NOCHANGE -1 203 204 /* 205 * Here are the locking policies for the two bonding locks: 206 * Get rcu_read_lock when reading or RTNL when writing slave list. 207 */ 208 struct bonding { 209 struct net_device *dev; /* first - useful for panic debug */ 210 struct slave __rcu *curr_active_slave; 211 struct slave __rcu *current_arp_slave; 212 struct slave __rcu *primary_slave; 213 struct bond_up_slave __rcu *usable_slaves; 214 struct bond_up_slave __rcu *all_slaves; 215 bool force_primary; 216 s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ 217 int (*recv_probe)(const struct sk_buff *, struct bonding *, 218 struct slave *); 219 /* mode_lock is used for mode-specific locking needs, currently used by: 220 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and 221 * bond_3ad_state_machine_handler() concurrently and also 222 * the access to the state machine shared variables. 223 * TLB mode (5) - to sync the use and modifications of its hash table 224 * ALB mode (6) - to sync the use and modifications of its hash table 225 */ 226 spinlock_t mode_lock; 227 spinlock_t stats_lock; 228 u8 send_peer_notif; 229 u8 igmp_retrans; 230 #ifdef CONFIG_PROC_FS 231 struct proc_dir_entry *proc_entry; 232 char proc_file_name[IFNAMSIZ]; 233 #endif /* CONFIG_PROC_FS */ 234 struct list_head bond_list; 235 u32 rr_tx_counter; 236 struct ad_bond_info ad_info; 237 struct alb_bond_info alb_info; 238 struct bond_params params; 239 struct workqueue_struct *wq; 240 struct delayed_work mii_work; 241 struct delayed_work arp_work; 242 struct delayed_work alb_work; 243 struct delayed_work ad_work; 244 struct delayed_work mcast_work; 245 struct delayed_work slave_arr_work; 246 #ifdef CONFIG_DEBUG_FS 247 /* debugging support via debugfs */ 248 struct dentry *debug_dir; 249 #endif /* CONFIG_DEBUG_FS */ 250 struct rtnl_link_stats64 bond_stats; 251 #ifdef CONFIG_XFRM_OFFLOAD 252 struct xfrm_state *xs; 253 #endif /* CONFIG_XFRM_OFFLOAD */ 254 }; 255 256 #define bond_slave_get_rcu(dev) \ 257 ((struct slave *) rcu_dereference(dev->rx_handler_data)) 258 259 #define bond_slave_get_rtnl(dev) \ 260 ((struct slave *) rtnl_dereference(dev->rx_handler_data)) 261 262 void bond_queue_slave_event(struct slave *slave); 263 void bond_lower_state_changed(struct slave *slave); 264 265 struct bond_vlan_tag { 266 __be16 vlan_proto; 267 unsigned short vlan_id; 268 }; 269 270 bool bond_sk_check(struct bonding *bond); 271 272 /** 273 * Returns NULL if the net_device does not belong to any of the bond's slaves 274 * 275 * Caller must hold bond lock for read 276 */ 277 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, 278 struct net_device *slave_dev) 279 { 280 return netdev_lower_dev_get_private(bond->dev, slave_dev); 281 } 282 283 static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) 284 { 285 return slave->bond; 286 } 287 288 static inline bool bond_should_override_tx_queue(struct bonding *bond) 289 { 290 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || 291 BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; 292 } 293 294 static inline bool bond_is_lb(const struct bonding *bond) 295 { 296 return BOND_MODE(bond) == BOND_MODE_TLB || 297 BOND_MODE(bond) == BOND_MODE_ALB; 298 } 299 300 static inline bool bond_needs_speed_duplex(const struct bonding *bond) 301 { 302 return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond); 303 } 304 305 static inline bool bond_is_nondyn_tlb(const struct bonding *bond) 306 { 307 return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); 308 } 309 310 static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) 311 { 312 return (BOND_MODE(bond) == BOND_MODE_8023AD || 313 BOND_MODE(bond) == BOND_MODE_XOR || 314 BOND_MODE(bond) == BOND_MODE_TLB || 315 BOND_MODE(bond) == BOND_MODE_ALB); 316 } 317 318 static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) 319 { 320 return (BOND_MODE(bond) == BOND_MODE_8023AD || 321 BOND_MODE(bond) == BOND_MODE_XOR || 322 bond_is_nondyn_tlb(bond)); 323 } 324 325 static inline bool bond_mode_uses_arp(int mode) 326 { 327 return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && 328 mode != BOND_MODE_ALB; 329 } 330 331 static inline bool bond_mode_uses_primary(int mode) 332 { 333 return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || 334 mode == BOND_MODE_ALB; 335 } 336 337 static inline bool bond_uses_primary(struct bonding *bond) 338 { 339 return bond_mode_uses_primary(BOND_MODE(bond)); 340 } 341 342 static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) 343 { 344 struct slave *slave = rcu_dereference(bond->curr_active_slave); 345 346 return bond_uses_primary(bond) && slave ? slave->dev : NULL; 347 } 348 349 static inline bool bond_slave_is_up(struct slave *slave) 350 { 351 return netif_running(slave->dev) && netif_carrier_ok(slave->dev); 352 } 353 354 static inline void bond_set_active_slave(struct slave *slave) 355 { 356 if (slave->backup) { 357 slave->backup = 0; 358 bond_queue_slave_event(slave); 359 bond_lower_state_changed(slave); 360 } 361 } 362 363 static inline void bond_set_backup_slave(struct slave *slave) 364 { 365 if (!slave->backup) { 366 slave->backup = 1; 367 bond_queue_slave_event(slave); 368 bond_lower_state_changed(slave); 369 } 370 } 371 372 static inline void bond_set_slave_state(struct slave *slave, 373 int slave_state, bool notify) 374 { 375 if (slave->backup == slave_state) 376 return; 377 378 slave->backup = slave_state; 379 if (notify) { 380 bond_lower_state_changed(slave); 381 bond_queue_slave_event(slave); 382 slave->should_notify = 0; 383 } else { 384 if (slave->should_notify) 385 slave->should_notify = 0; 386 else 387 slave->should_notify = 1; 388 } 389 } 390 391 static inline void bond_slave_state_change(struct bonding *bond) 392 { 393 struct list_head *iter; 394 struct slave *tmp; 395 396 bond_for_each_slave(bond, tmp, iter) { 397 if (tmp->link == BOND_LINK_UP) 398 bond_set_active_slave(tmp); 399 else if (tmp->link == BOND_LINK_DOWN) 400 bond_set_backup_slave(tmp); 401 } 402 } 403 404 static inline void bond_slave_state_notify(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->should_notify) { 411 bond_lower_state_changed(tmp); 412 tmp->should_notify = 0; 413 } 414 } 415 } 416 417 static inline int bond_slave_state(struct slave *slave) 418 { 419 return slave->backup; 420 } 421 422 static inline bool bond_is_active_slave(struct slave *slave) 423 { 424 return !bond_slave_state(slave); 425 } 426 427 static inline bool bond_slave_can_tx(struct slave *slave) 428 { 429 return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && 430 bond_is_active_slave(slave); 431 } 432 433 static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) 434 { 435 struct slave *slave; 436 bool active; 437 438 rcu_read_lock(); 439 slave = bond_slave_get_rcu(slave_dev); 440 active = bond_is_active_slave(slave); 441 rcu_read_unlock(); 442 443 return active; 444 } 445 446 static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) 447 { 448 if (len == ETH_ALEN) { 449 ether_addr_copy(dst, src); 450 return; 451 } 452 453 memcpy(dst, src, len); 454 } 455 456 #define BOND_PRI_RESELECT_ALWAYS 0 457 #define BOND_PRI_RESELECT_BETTER 1 458 #define BOND_PRI_RESELECT_FAILURE 2 459 460 #define BOND_FOM_NONE 0 461 #define BOND_FOM_ACTIVE 1 462 #define BOND_FOM_FOLLOW 2 463 464 #define BOND_ARP_TARGETS_ANY 0 465 #define BOND_ARP_TARGETS_ALL 1 466 467 #define BOND_ARP_VALIDATE_NONE 0 468 #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) 469 #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) 470 #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ 471 BOND_ARP_VALIDATE_BACKUP) 472 #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) 473 #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ 474 BOND_ARP_FILTER) 475 #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ 476 BOND_ARP_FILTER) 477 478 #define BOND_SLAVE_NOTIFY_NOW true 479 #define BOND_SLAVE_NOTIFY_LATER false 480 481 static inline int slave_do_arp_validate(struct bonding *bond, 482 struct slave *slave) 483 { 484 return bond->params.arp_validate & (1 << bond_slave_state(slave)); 485 } 486 487 static inline int slave_do_arp_validate_only(struct bonding *bond) 488 { 489 return bond->params.arp_validate & BOND_ARP_FILTER; 490 } 491 492 static inline int bond_is_ip_target_ok(__be32 addr) 493 { 494 return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); 495 } 496 497 /* Get the oldest arp which we've received on this slave for bond's 498 * arp_targets. 499 */ 500 static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, 501 struct slave *slave) 502 { 503 int i = 1; 504 unsigned long ret = slave->target_last_arp_rx[0]; 505 506 for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) 507 if (time_before(slave->target_last_arp_rx[i], ret)) 508 ret = slave->target_last_arp_rx[i]; 509 510 return ret; 511 } 512 513 static inline unsigned long slave_last_rx(struct bonding *bond, 514 struct slave *slave) 515 { 516 if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) 517 return slave_oldest_target_arp_rx(bond, slave); 518 519 return slave->last_rx; 520 } 521 522 #ifdef CONFIG_NET_POLL_CONTROLLER 523 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 524 struct sk_buff *skb) 525 { 526 return netpoll_send_skb(slave->np, skb); 527 } 528 #else 529 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 530 struct sk_buff *skb) 531 { 532 BUG(); 533 return NETDEV_TX_OK; 534 } 535 #endif 536 537 static inline void bond_set_slave_inactive_flags(struct slave *slave, 538 bool notify) 539 { 540 if (!bond_is_lb(slave->bond)) 541 bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); 542 if (!slave->bond->params.all_slaves_active) 543 slave->inactive = 1; 544 } 545 546 static inline void bond_set_slave_active_flags(struct slave *slave, 547 bool notify) 548 { 549 bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); 550 slave->inactive = 0; 551 } 552 553 static inline bool bond_is_slave_inactive(struct slave *slave) 554 { 555 return slave->inactive; 556 } 557 558 static inline void bond_propose_link_state(struct slave *slave, int state) 559 { 560 slave->link_new_state = state; 561 } 562 563 static inline void bond_commit_link_state(struct slave *slave, bool notify) 564 { 565 if (slave->link_new_state == BOND_LINK_NOCHANGE) 566 return; 567 568 slave->link = slave->link_new_state; 569 if (notify) { 570 bond_queue_slave_event(slave); 571 bond_lower_state_changed(slave); 572 slave->should_notify_link = 0; 573 } else { 574 if (slave->should_notify_link) 575 slave->should_notify_link = 0; 576 else 577 slave->should_notify_link = 1; 578 } 579 } 580 581 static inline void bond_set_slave_link_state(struct slave *slave, int state, 582 bool notify) 583 { 584 bond_propose_link_state(slave, state); 585 bond_commit_link_state(slave, notify); 586 } 587 588 static inline void bond_slave_link_notify(struct bonding *bond) 589 { 590 struct list_head *iter; 591 struct slave *tmp; 592 593 bond_for_each_slave(bond, tmp, iter) { 594 if (tmp->should_notify_link) { 595 bond_queue_slave_event(tmp); 596 bond_lower_state_changed(tmp); 597 tmp->should_notify_link = 0; 598 } 599 } 600 } 601 602 static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) 603 { 604 struct in_device *in_dev; 605 __be32 addr = 0; 606 607 rcu_read_lock(); 608 in_dev = __in_dev_get_rcu(dev); 609 610 if (in_dev) 611 addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, 612 RT_SCOPE_HOST); 613 rcu_read_unlock(); 614 return addr; 615 } 616 617 struct bond_net { 618 struct net *net; /* Associated network namespace */ 619 struct list_head dev_list; 620 #ifdef CONFIG_PROC_FS 621 struct proc_dir_entry *proc_dir; 622 #endif 623 struct class_attribute class_attr_bonding_masters; 624 }; 625 626 int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); 627 netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); 628 int bond_create(struct net *net, const char *name); 629 int bond_create_sysfs(struct bond_net *net); 630 void bond_destroy_sysfs(struct bond_net *net); 631 void bond_prepare_sysfs_group(struct bonding *bond); 632 int bond_sysfs_slave_add(struct slave *slave); 633 void bond_sysfs_slave_del(struct slave *slave); 634 int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, 635 struct netlink_ext_ack *extack); 636 int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); 637 u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); 638 int bond_set_carrier(struct bonding *bond); 639 void bond_select_active_slave(struct bonding *bond); 640 void bond_change_active_slave(struct bonding *bond, struct slave *new_active); 641 void bond_create_debugfs(void); 642 void bond_destroy_debugfs(void); 643 void bond_debug_register(struct bonding *bond); 644 void bond_debug_unregister(struct bonding *bond); 645 void bond_debug_reregister(struct bonding *bond); 646 const char *bond_mode_name(int mode); 647 void bond_setup(struct net_device *bond_dev); 648 unsigned int bond_get_num_tx_queues(void); 649 int bond_netlink_init(void); 650 void bond_netlink_fini(void); 651 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); 652 const char *bond_slave_link_status(s8 link); 653 struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, 654 struct net_device *end_dev, 655 int level); 656 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); 657 void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); 658 void bond_work_init_all(struct bonding *bond); 659 660 #ifdef CONFIG_PROC_FS 661 void bond_create_proc_entry(struct bonding *bond); 662 void bond_remove_proc_entry(struct bonding *bond); 663 void bond_create_proc_dir(struct bond_net *bn); 664 void bond_destroy_proc_dir(struct bond_net *bn); 665 #else 666 static inline void bond_create_proc_entry(struct bonding *bond) 667 { 668 } 669 670 static inline void bond_remove_proc_entry(struct bonding *bond) 671 { 672 } 673 674 static inline void bond_create_proc_dir(struct bond_net *bn) 675 { 676 } 677 678 static inline void bond_destroy_proc_dir(struct bond_net *bn) 679 { 680 } 681 #endif 682 683 static inline struct slave *bond_slave_has_mac(struct bonding *bond, 684 const u8 *mac) 685 { 686 struct list_head *iter; 687 struct slave *tmp; 688 689 bond_for_each_slave(bond, tmp, iter) 690 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 691 return tmp; 692 693 return NULL; 694 } 695 696 /* Caller must hold rcu_read_lock() for read */ 697 static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond, 698 const u8 *mac) 699 { 700 struct list_head *iter; 701 struct slave *tmp; 702 703 bond_for_each_slave_rcu(bond, tmp, iter) 704 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 705 return tmp; 706 707 return NULL; 708 } 709 710 /* Caller must hold rcu_read_lock() for read */ 711 static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) 712 { 713 struct list_head *iter; 714 struct slave *tmp; 715 struct netdev_hw_addr *ha; 716 717 bond_for_each_slave_rcu(bond, tmp, iter) 718 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 719 return true; 720 721 if (netdev_uc_empty(bond->dev)) 722 return false; 723 724 netdev_for_each_uc_addr(ha, bond->dev) 725 if (ether_addr_equal_64bits(mac, ha->addr)) 726 return true; 727 728 return false; 729 } 730 731 /* Check if the ip is present in arp ip list, or first free slot if ip == 0 732 * Returns -1 if not found, index if found 733 */ 734 static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) 735 { 736 int i; 737 738 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 739 if (targets[i] == ip) 740 return i; 741 else if (targets[i] == 0) 742 break; 743 744 return -1; 745 } 746 747 /* exported from bond_main.c */ 748 extern unsigned int bond_net_id; 749 extern const struct bond_parm_tbl bond_lacp_tbl[]; 750 extern const struct bond_parm_tbl xmit_hashtype_tbl[]; 751 extern const struct bond_parm_tbl arp_validate_tbl[]; 752 extern const struct bond_parm_tbl arp_all_targets_tbl[]; 753 extern const struct bond_parm_tbl fail_over_mac_tbl[]; 754 extern const struct bond_parm_tbl pri_reselect_tbl[]; 755 extern struct bond_parm_tbl ad_select_tbl[]; 756 757 /* exported from bond_netlink.c */ 758 extern struct rtnl_link_ops bond_link_ops; 759 760 /* exported from bond_sysfs_slave.c */ 761 extern const struct sysfs_ops slave_sysfs_ops; 762 763 static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) 764 { 765 atomic_long_inc(&dev->tx_dropped); 766 dev_kfree_skb_any(skb); 767 return NET_XMIT_DROP; 768 } 769 770 #endif /* _NET_BONDING_H */ 771