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 u8 missed_max; 125 int arp_interval; 126 int arp_validate; 127 int arp_all_targets; 128 int use_carrier; 129 int fail_over_mac; 130 int updelay; 131 int downdelay; 132 int peer_notif_delay; 133 int lacp_active; 134 int lacp_fast; 135 unsigned int min_links; 136 int ad_select; 137 char primary[IFNAMSIZ]; 138 int primary_reselect; 139 __be32 arp_targets[BOND_MAX_ARP_TARGETS]; 140 int tx_queues; 141 int all_slaves_active; 142 int resend_igmp; 143 int lp_interval; 144 int packets_per_slave; 145 int tlb_dynamic_lb; 146 struct reciprocal_value reciprocal_packets_per_slave; 147 u16 ad_actor_sys_prio; 148 u16 ad_user_port_key; 149 150 /* 2 bytes of padding : see ether_addr_equal_64bits() */ 151 u8 ad_actor_system[ETH_ALEN + 2]; 152 }; 153 154 struct slave { 155 struct net_device *dev; /* first - useful for panic debug */ 156 struct bonding *bond; /* our master */ 157 int delay; 158 /* all three in jiffies */ 159 unsigned long last_link_up; 160 unsigned long last_rx; 161 unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; 162 s8 link; /* one of BOND_LINK_XXXX */ 163 s8 link_new_state; /* one of BOND_LINK_XXXX */ 164 u8 backup:1, /* indicates backup slave. Value corresponds with 165 BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ 166 inactive:1, /* indicates inactive slave */ 167 should_notify:1, /* indicates whether the state changed */ 168 should_notify_link:1; /* indicates whether the link changed */ 169 u8 duplex; 170 u32 original_mtu; 171 u32 link_failure_count; 172 u32 speed; 173 u16 queue_id; 174 u8 perm_hwaddr[MAX_ADDR_LEN]; 175 struct ad_slave_info *ad_info; 176 struct tlb_slave_info tlb_info; 177 #ifdef CONFIG_NET_POLL_CONTROLLER 178 struct netpoll *np; 179 #endif 180 struct delayed_work notify_work; 181 struct kobject kobj; 182 struct rtnl_link_stats64 slave_stats; 183 }; 184 185 static inline struct slave *to_slave(struct kobject *kobj) 186 { 187 return container_of(kobj, struct slave, kobj); 188 } 189 190 struct bond_up_slave { 191 unsigned int count; 192 struct rcu_head rcu; 193 struct slave *arr[]; 194 }; 195 196 /* 197 * Link pseudo-state only used internally by monitors 198 */ 199 #define BOND_LINK_NOCHANGE -1 200 201 struct bond_ipsec { 202 struct list_head list; 203 struct xfrm_state *xs; 204 }; 205 206 /* 207 * Here are the locking policies for the two bonding locks: 208 * Get rcu_read_lock when reading or RTNL when writing slave list. 209 */ 210 struct bonding { 211 struct net_device *dev; /* first - useful for panic debug */ 212 struct slave __rcu *curr_active_slave; 213 struct slave __rcu *current_arp_slave; 214 struct slave __rcu *primary_slave; 215 struct bond_up_slave __rcu *usable_slaves; 216 struct bond_up_slave __rcu *all_slaves; 217 bool force_primary; 218 s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ 219 int (*recv_probe)(const struct sk_buff *, struct bonding *, 220 struct slave *); 221 /* mode_lock is used for mode-specific locking needs, currently used by: 222 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and 223 * bond_3ad_state_machine_handler() concurrently and also 224 * the access to the state machine shared variables. 225 * TLB mode (5) - to sync the use and modifications of its hash table 226 * ALB mode (6) - to sync the use and modifications of its hash table 227 */ 228 spinlock_t mode_lock; 229 spinlock_t stats_lock; 230 u8 send_peer_notif; 231 u8 igmp_retrans; 232 #ifdef CONFIG_PROC_FS 233 struct proc_dir_entry *proc_entry; 234 char proc_file_name[IFNAMSIZ]; 235 #endif /* CONFIG_PROC_FS */ 236 struct list_head bond_list; 237 u32 __percpu *rr_tx_counter; 238 struct ad_bond_info ad_info; 239 struct alb_bond_info alb_info; 240 struct bond_params params; 241 struct workqueue_struct *wq; 242 struct delayed_work mii_work; 243 struct delayed_work arp_work; 244 struct delayed_work alb_work; 245 struct delayed_work ad_work; 246 struct delayed_work mcast_work; 247 struct delayed_work slave_arr_work; 248 #ifdef CONFIG_DEBUG_FS 249 /* debugging support via debugfs */ 250 struct dentry *debug_dir; 251 #endif /* CONFIG_DEBUG_FS */ 252 struct rtnl_link_stats64 bond_stats; 253 #ifdef CONFIG_XFRM_OFFLOAD 254 struct list_head ipsec_list; 255 /* protecting ipsec_list */ 256 spinlock_t ipsec_lock; 257 #endif /* CONFIG_XFRM_OFFLOAD */ 258 struct bpf_prog *xdp_prog; 259 }; 260 261 #define bond_slave_get_rcu(dev) \ 262 ((struct slave *) rcu_dereference(dev->rx_handler_data)) 263 264 #define bond_slave_get_rtnl(dev) \ 265 ((struct slave *) rtnl_dereference(dev->rx_handler_data)) 266 267 void bond_queue_slave_event(struct slave *slave); 268 void bond_lower_state_changed(struct slave *slave); 269 270 struct bond_vlan_tag { 271 __be16 vlan_proto; 272 unsigned short vlan_id; 273 }; 274 275 bool bond_sk_check(struct bonding *bond); 276 277 /** 278 * Returns NULL if the net_device does not belong to any of the bond's slaves 279 * 280 * Caller must hold bond lock for read 281 */ 282 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, 283 struct net_device *slave_dev) 284 { 285 return netdev_lower_dev_get_private(bond->dev, slave_dev); 286 } 287 288 static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) 289 { 290 return slave->bond; 291 } 292 293 static inline bool bond_should_override_tx_queue(struct bonding *bond) 294 { 295 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || 296 BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; 297 } 298 299 static inline bool bond_is_lb(const struct bonding *bond) 300 { 301 return BOND_MODE(bond) == BOND_MODE_TLB || 302 BOND_MODE(bond) == BOND_MODE_ALB; 303 } 304 305 static inline bool bond_needs_speed_duplex(const struct bonding *bond) 306 { 307 return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond); 308 } 309 310 static inline bool bond_is_nondyn_tlb(const struct bonding *bond) 311 { 312 return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); 313 } 314 315 static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) 316 { 317 return (BOND_MODE(bond) == BOND_MODE_8023AD || 318 BOND_MODE(bond) == BOND_MODE_XOR || 319 BOND_MODE(bond) == BOND_MODE_TLB || 320 BOND_MODE(bond) == BOND_MODE_ALB); 321 } 322 323 static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) 324 { 325 return (BOND_MODE(bond) == BOND_MODE_8023AD || 326 BOND_MODE(bond) == BOND_MODE_XOR || 327 bond_is_nondyn_tlb(bond)); 328 } 329 330 static inline bool bond_mode_uses_arp(int mode) 331 { 332 return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && 333 mode != BOND_MODE_ALB; 334 } 335 336 static inline bool bond_mode_uses_primary(int mode) 337 { 338 return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || 339 mode == BOND_MODE_ALB; 340 } 341 342 static inline bool bond_uses_primary(struct bonding *bond) 343 { 344 return bond_mode_uses_primary(BOND_MODE(bond)); 345 } 346 347 static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) 348 { 349 struct slave *slave = rcu_dereference(bond->curr_active_slave); 350 351 return bond_uses_primary(bond) && slave ? slave->dev : NULL; 352 } 353 354 static inline bool bond_slave_is_up(struct slave *slave) 355 { 356 return netif_running(slave->dev) && netif_carrier_ok(slave->dev); 357 } 358 359 static inline void bond_set_active_slave(struct slave *slave) 360 { 361 if (slave->backup) { 362 slave->backup = 0; 363 bond_queue_slave_event(slave); 364 bond_lower_state_changed(slave); 365 } 366 } 367 368 static inline void bond_set_backup_slave(struct slave *slave) 369 { 370 if (!slave->backup) { 371 slave->backup = 1; 372 bond_queue_slave_event(slave); 373 bond_lower_state_changed(slave); 374 } 375 } 376 377 static inline void bond_set_slave_state(struct slave *slave, 378 int slave_state, bool notify) 379 { 380 if (slave->backup == slave_state) 381 return; 382 383 slave->backup = slave_state; 384 if (notify) { 385 bond_lower_state_changed(slave); 386 bond_queue_slave_event(slave); 387 slave->should_notify = 0; 388 } else { 389 if (slave->should_notify) 390 slave->should_notify = 0; 391 else 392 slave->should_notify = 1; 393 } 394 } 395 396 static inline void bond_slave_state_change(struct bonding *bond) 397 { 398 struct list_head *iter; 399 struct slave *tmp; 400 401 bond_for_each_slave(bond, tmp, iter) { 402 if (tmp->link == BOND_LINK_UP) 403 bond_set_active_slave(tmp); 404 else if (tmp->link == BOND_LINK_DOWN) 405 bond_set_backup_slave(tmp); 406 } 407 } 408 409 static inline void bond_slave_state_notify(struct bonding *bond) 410 { 411 struct list_head *iter; 412 struct slave *tmp; 413 414 bond_for_each_slave(bond, tmp, iter) { 415 if (tmp->should_notify) { 416 bond_lower_state_changed(tmp); 417 tmp->should_notify = 0; 418 } 419 } 420 } 421 422 static inline int bond_slave_state(struct slave *slave) 423 { 424 return slave->backup; 425 } 426 427 static inline bool bond_is_active_slave(struct slave *slave) 428 { 429 return !bond_slave_state(slave); 430 } 431 432 static inline bool bond_slave_can_tx(struct slave *slave) 433 { 434 return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && 435 bond_is_active_slave(slave); 436 } 437 438 static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) 439 { 440 struct slave *slave; 441 bool active; 442 443 rcu_read_lock(); 444 slave = bond_slave_get_rcu(slave_dev); 445 active = bond_is_active_slave(slave); 446 rcu_read_unlock(); 447 448 return active; 449 } 450 451 static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) 452 { 453 if (len == ETH_ALEN) { 454 ether_addr_copy(dst, src); 455 return; 456 } 457 458 memcpy(dst, src, len); 459 } 460 461 #define BOND_PRI_RESELECT_ALWAYS 0 462 #define BOND_PRI_RESELECT_BETTER 1 463 #define BOND_PRI_RESELECT_FAILURE 2 464 465 #define BOND_FOM_NONE 0 466 #define BOND_FOM_ACTIVE 1 467 #define BOND_FOM_FOLLOW 2 468 469 #define BOND_ARP_TARGETS_ANY 0 470 #define BOND_ARP_TARGETS_ALL 1 471 472 #define BOND_ARP_VALIDATE_NONE 0 473 #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) 474 #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) 475 #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ 476 BOND_ARP_VALIDATE_BACKUP) 477 #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) 478 #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ 479 BOND_ARP_FILTER) 480 #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ 481 BOND_ARP_FILTER) 482 483 #define BOND_SLAVE_NOTIFY_NOW true 484 #define BOND_SLAVE_NOTIFY_LATER false 485 486 static inline int slave_do_arp_validate(struct bonding *bond, 487 struct slave *slave) 488 { 489 return bond->params.arp_validate & (1 << bond_slave_state(slave)); 490 } 491 492 static inline int slave_do_arp_validate_only(struct bonding *bond) 493 { 494 return bond->params.arp_validate & BOND_ARP_FILTER; 495 } 496 497 static inline int bond_is_ip_target_ok(__be32 addr) 498 { 499 return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); 500 } 501 502 /* Get the oldest arp which we've received on this slave for bond's 503 * arp_targets. 504 */ 505 static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, 506 struct slave *slave) 507 { 508 int i = 1; 509 unsigned long ret = slave->target_last_arp_rx[0]; 510 511 for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) 512 if (time_before(slave->target_last_arp_rx[i], ret)) 513 ret = slave->target_last_arp_rx[i]; 514 515 return ret; 516 } 517 518 static inline unsigned long slave_last_rx(struct bonding *bond, 519 struct slave *slave) 520 { 521 if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) 522 return slave_oldest_target_arp_rx(bond, slave); 523 524 return slave->last_rx; 525 } 526 527 #ifdef CONFIG_NET_POLL_CONTROLLER 528 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 529 struct sk_buff *skb) 530 { 531 return netpoll_send_skb(slave->np, skb); 532 } 533 #else 534 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 535 struct sk_buff *skb) 536 { 537 BUG(); 538 return NETDEV_TX_OK; 539 } 540 #endif 541 542 static inline void bond_set_slave_inactive_flags(struct slave *slave, 543 bool notify) 544 { 545 if (!bond_is_lb(slave->bond)) 546 bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); 547 if (!slave->bond->params.all_slaves_active) 548 slave->inactive = 1; 549 } 550 551 static inline void bond_set_slave_active_flags(struct slave *slave, 552 bool notify) 553 { 554 bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); 555 slave->inactive = 0; 556 } 557 558 static inline bool bond_is_slave_inactive(struct slave *slave) 559 { 560 return slave->inactive; 561 } 562 563 static inline void bond_propose_link_state(struct slave *slave, int state) 564 { 565 slave->link_new_state = state; 566 } 567 568 static inline void bond_commit_link_state(struct slave *slave, bool notify) 569 { 570 if (slave->link_new_state == BOND_LINK_NOCHANGE) 571 return; 572 573 slave->link = slave->link_new_state; 574 if (notify) { 575 bond_queue_slave_event(slave); 576 bond_lower_state_changed(slave); 577 slave->should_notify_link = 0; 578 } else { 579 if (slave->should_notify_link) 580 slave->should_notify_link = 0; 581 else 582 slave->should_notify_link = 1; 583 } 584 } 585 586 static inline void bond_set_slave_link_state(struct slave *slave, int state, 587 bool notify) 588 { 589 bond_propose_link_state(slave, state); 590 bond_commit_link_state(slave, notify); 591 } 592 593 static inline void bond_slave_link_notify(struct bonding *bond) 594 { 595 struct list_head *iter; 596 struct slave *tmp; 597 598 bond_for_each_slave(bond, tmp, iter) { 599 if (tmp->should_notify_link) { 600 bond_queue_slave_event(tmp); 601 bond_lower_state_changed(tmp); 602 tmp->should_notify_link = 0; 603 } 604 } 605 } 606 607 static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) 608 { 609 struct in_device *in_dev; 610 __be32 addr = 0; 611 612 rcu_read_lock(); 613 in_dev = __in_dev_get_rcu(dev); 614 615 if (in_dev) 616 addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, 617 RT_SCOPE_HOST); 618 rcu_read_unlock(); 619 return addr; 620 } 621 622 struct bond_net { 623 struct net *net; /* Associated network namespace */ 624 struct list_head dev_list; 625 #ifdef CONFIG_PROC_FS 626 struct proc_dir_entry *proc_dir; 627 #endif 628 struct class_attribute class_attr_bonding_masters; 629 }; 630 631 int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); 632 netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); 633 int bond_create(struct net *net, const char *name); 634 int bond_create_sysfs(struct bond_net *net); 635 void bond_destroy_sysfs(struct bond_net *net); 636 void bond_prepare_sysfs_group(struct bonding *bond); 637 int bond_sysfs_slave_add(struct slave *slave); 638 void bond_sysfs_slave_del(struct slave *slave); 639 int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, 640 struct netlink_ext_ack *extack); 641 int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); 642 u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); 643 int bond_set_carrier(struct bonding *bond); 644 void bond_select_active_slave(struct bonding *bond); 645 void bond_change_active_slave(struct bonding *bond, struct slave *new_active); 646 void bond_create_debugfs(void); 647 void bond_destroy_debugfs(void); 648 void bond_debug_register(struct bonding *bond); 649 void bond_debug_unregister(struct bonding *bond); 650 void bond_debug_reregister(struct bonding *bond); 651 const char *bond_mode_name(int mode); 652 void bond_setup(struct net_device *bond_dev); 653 unsigned int bond_get_num_tx_queues(void); 654 int bond_netlink_init(void); 655 void bond_netlink_fini(void); 656 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); 657 const char *bond_slave_link_status(s8 link); 658 struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, 659 struct net_device *end_dev, 660 int level); 661 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); 662 void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); 663 void bond_work_init_all(struct bonding *bond); 664 665 #ifdef CONFIG_PROC_FS 666 void bond_create_proc_entry(struct bonding *bond); 667 void bond_remove_proc_entry(struct bonding *bond); 668 void bond_create_proc_dir(struct bond_net *bn); 669 void bond_destroy_proc_dir(struct bond_net *bn); 670 #else 671 static inline void bond_create_proc_entry(struct bonding *bond) 672 { 673 } 674 675 static inline void bond_remove_proc_entry(struct bonding *bond) 676 { 677 } 678 679 static inline void bond_create_proc_dir(struct bond_net *bn) 680 { 681 } 682 683 static inline void bond_destroy_proc_dir(struct bond_net *bn) 684 { 685 } 686 #endif 687 688 static inline struct slave *bond_slave_has_mac(struct bonding *bond, 689 const u8 *mac) 690 { 691 struct list_head *iter; 692 struct slave *tmp; 693 694 bond_for_each_slave(bond, tmp, iter) 695 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 696 return tmp; 697 698 return NULL; 699 } 700 701 /* Caller must hold rcu_read_lock() for read */ 702 static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond, 703 const u8 *mac) 704 { 705 struct list_head *iter; 706 struct slave *tmp; 707 708 bond_for_each_slave_rcu(bond, tmp, iter) 709 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 710 return tmp; 711 712 return NULL; 713 } 714 715 /* Caller must hold rcu_read_lock() for read */ 716 static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) 717 { 718 struct list_head *iter; 719 struct slave *tmp; 720 struct netdev_hw_addr *ha; 721 722 bond_for_each_slave_rcu(bond, tmp, iter) 723 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 724 return true; 725 726 if (netdev_uc_empty(bond->dev)) 727 return false; 728 729 netdev_for_each_uc_addr(ha, bond->dev) 730 if (ether_addr_equal_64bits(mac, ha->addr)) 731 return true; 732 733 return false; 734 } 735 736 /* Check if the ip is present in arp ip list, or first free slot if ip == 0 737 * Returns -1 if not found, index if found 738 */ 739 static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) 740 { 741 int i; 742 743 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 744 if (targets[i] == ip) 745 return i; 746 else if (targets[i] == 0) 747 break; 748 749 return -1; 750 } 751 752 /* exported from bond_main.c */ 753 extern unsigned int bond_net_id; 754 755 /* exported from bond_netlink.c */ 756 extern struct rtnl_link_ops bond_link_ops; 757 758 /* exported from bond_sysfs_slave.c */ 759 extern const struct sysfs_ops slave_sysfs_ops; 760 761 static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) 762 { 763 atomic_long_inc(&dev->tx_dropped); 764 dev_kfree_skb_any(skb); 765 return NET_XMIT_DROP; 766 } 767 768 #endif /* _NET_BONDING_H */ 769