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 #include <net/ipv6.h> 33 #include <net/addrconf.h> 34 35 #define BOND_MAX_ARP_TARGETS 16 36 #define BOND_MAX_NS_TARGETS BOND_MAX_ARP_TARGETS 37 38 #define BOND_DEFAULT_MIIMON 100 39 40 #ifndef __long_aligned 41 #define __long_aligned __attribute__((aligned((sizeof(long))))) 42 #endif 43 44 #define slave_info(bond_dev, slave_dev, fmt, ...) \ 45 netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 46 #define slave_warn(bond_dev, slave_dev, fmt, ...) \ 47 netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 48 #define slave_dbg(bond_dev, slave_dev, fmt, ...) \ 49 netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 50 #define slave_err(bond_dev, slave_dev, fmt, ...) \ 51 netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 52 53 #define BOND_MODE(bond) ((bond)->params.mode) 54 55 /* slave list primitives */ 56 #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower) 57 58 #define bond_has_slaves(bond) !list_empty(bond_slave_list(bond)) 59 60 /* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */ 61 #define bond_first_slave(bond) \ 62 (bond_has_slaves(bond) ? \ 63 netdev_adjacent_get_private(bond_slave_list(bond)->next) : \ 64 NULL) 65 #define bond_last_slave(bond) \ 66 (bond_has_slaves(bond) ? \ 67 netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \ 68 NULL) 69 70 /* Caller must have rcu_read_lock */ 71 #define bond_first_slave_rcu(bond) \ 72 netdev_lower_get_first_private_rcu(bond->dev) 73 74 #define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond)) 75 #define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond)) 76 77 /** 78 * bond_for_each_slave - iterate over all slaves 79 * @bond: the bond holding this list 80 * @pos: current slave 81 * @iter: list_head * iterator 82 * 83 * Caller must hold RTNL 84 */ 85 #define bond_for_each_slave(bond, pos, iter) \ 86 netdev_for_each_lower_private((bond)->dev, pos, iter) 87 88 /* Caller must have rcu_read_lock */ 89 #define bond_for_each_slave_rcu(bond, pos, iter) \ 90 netdev_for_each_lower_private_rcu((bond)->dev, pos, iter) 91 92 #define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ 93 NETIF_F_GSO_ESP) 94 95 #define BOND_TLS_FEATURES (NETIF_F_HW_TLS_TX | NETIF_F_HW_TLS_RX) 96 97 #ifdef CONFIG_NET_POLL_CONTROLLER 98 extern atomic_t netpoll_block_tx; 99 100 static inline void block_netpoll_tx(void) 101 { 102 atomic_inc(&netpoll_block_tx); 103 } 104 105 static inline void unblock_netpoll_tx(void) 106 { 107 atomic_dec(&netpoll_block_tx); 108 } 109 110 static inline int is_netpoll_tx_blocked(struct net_device *dev) 111 { 112 if (unlikely(netpoll_tx_running(dev))) 113 return atomic_read(&netpoll_block_tx); 114 return 0; 115 } 116 #else 117 #define block_netpoll_tx() 118 #define unblock_netpoll_tx() 119 #define is_netpoll_tx_blocked(dev) (0) 120 #endif 121 122 struct bond_params { 123 int mode; 124 int xmit_policy; 125 int miimon; 126 u8 num_peer_notif; 127 u8 missed_max; 128 int arp_interval; 129 int arp_validate; 130 int arp_all_targets; 131 int use_carrier; 132 int fail_over_mac; 133 int updelay; 134 int downdelay; 135 int peer_notif_delay; 136 int lacp_active; 137 int lacp_fast; 138 unsigned int min_links; 139 int ad_select; 140 char primary[IFNAMSIZ]; 141 int primary_reselect; 142 __be32 arp_targets[BOND_MAX_ARP_TARGETS]; 143 int tx_queues; 144 int all_slaves_active; 145 int resend_igmp; 146 int lp_interval; 147 int packets_per_slave; 148 int tlb_dynamic_lb; 149 struct reciprocal_value reciprocal_packets_per_slave; 150 u16 ad_actor_sys_prio; 151 u16 ad_user_port_key; 152 #if IS_ENABLED(CONFIG_IPV6) 153 struct in6_addr ns_targets[BOND_MAX_NS_TARGETS]; 154 #endif 155 156 /* 2 bytes of padding : see ether_addr_equal_64bits() */ 157 u8 ad_actor_system[ETH_ALEN + 2]; 158 }; 159 160 struct slave { 161 struct net_device *dev; /* first - useful for panic debug */ 162 struct bonding *bond; /* our master */ 163 int delay; 164 /* all three in jiffies */ 165 unsigned long last_link_up; 166 unsigned long last_rx; 167 unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; 168 s8 link; /* one of BOND_LINK_XXXX */ 169 s8 link_new_state; /* one of BOND_LINK_XXXX */ 170 u8 backup:1, /* indicates backup slave. Value corresponds with 171 BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ 172 inactive:1, /* indicates inactive slave */ 173 should_notify:1, /* indicates whether the state changed */ 174 should_notify_link:1; /* indicates whether the link changed */ 175 u8 duplex; 176 u32 original_mtu; 177 u32 link_failure_count; 178 u32 speed; 179 u16 queue_id; 180 u8 perm_hwaddr[MAX_ADDR_LEN]; 181 struct ad_slave_info *ad_info; 182 struct tlb_slave_info tlb_info; 183 #ifdef CONFIG_NET_POLL_CONTROLLER 184 struct netpoll *np; 185 #endif 186 struct delayed_work notify_work; 187 struct kobject kobj; 188 struct rtnl_link_stats64 slave_stats; 189 }; 190 191 static inline struct slave *to_slave(struct kobject *kobj) 192 { 193 return container_of(kobj, struct slave, kobj); 194 } 195 196 struct bond_up_slave { 197 unsigned int count; 198 struct rcu_head rcu; 199 struct slave *arr[]; 200 }; 201 202 /* 203 * Link pseudo-state only used internally by monitors 204 */ 205 #define BOND_LINK_NOCHANGE -1 206 207 struct bond_ipsec { 208 struct list_head list; 209 struct xfrm_state *xs; 210 }; 211 212 /* 213 * Here are the locking policies for the two bonding locks: 214 * Get rcu_read_lock when reading or RTNL when writing slave list. 215 */ 216 struct bonding { 217 struct net_device *dev; /* first - useful for panic debug */ 218 struct slave __rcu *curr_active_slave; 219 struct slave __rcu *current_arp_slave; 220 struct slave __rcu *primary_slave; 221 struct bond_up_slave __rcu *usable_slaves; 222 struct bond_up_slave __rcu *all_slaves; 223 bool force_primary; 224 s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ 225 int (*recv_probe)(const struct sk_buff *, struct bonding *, 226 struct slave *); 227 /* mode_lock is used for mode-specific locking needs, currently used by: 228 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and 229 * bond_3ad_state_machine_handler() concurrently and also 230 * the access to the state machine shared variables. 231 * TLB mode (5) - to sync the use and modifications of its hash table 232 * ALB mode (6) - to sync the use and modifications of its hash table 233 */ 234 spinlock_t mode_lock; 235 spinlock_t stats_lock; 236 u8 send_peer_notif; 237 u8 igmp_retrans; 238 #ifdef CONFIG_PROC_FS 239 struct proc_dir_entry *proc_entry; 240 char proc_file_name[IFNAMSIZ]; 241 #endif /* CONFIG_PROC_FS */ 242 struct list_head bond_list; 243 u32 __percpu *rr_tx_counter; 244 struct ad_bond_info ad_info; 245 struct alb_bond_info alb_info; 246 struct bond_params params; 247 struct workqueue_struct *wq; 248 struct delayed_work mii_work; 249 struct delayed_work arp_work; 250 struct delayed_work alb_work; 251 struct delayed_work ad_work; 252 struct delayed_work mcast_work; 253 struct delayed_work slave_arr_work; 254 #ifdef CONFIG_DEBUG_FS 255 /* debugging support via debugfs */ 256 struct dentry *debug_dir; 257 #endif /* CONFIG_DEBUG_FS */ 258 struct rtnl_link_stats64 bond_stats; 259 #ifdef CONFIG_XFRM_OFFLOAD 260 struct list_head ipsec_list; 261 /* protecting ipsec_list */ 262 spinlock_t ipsec_lock; 263 #endif /* CONFIG_XFRM_OFFLOAD */ 264 struct bpf_prog *xdp_prog; 265 }; 266 267 #define bond_slave_get_rcu(dev) \ 268 ((struct slave *) rcu_dereference(dev->rx_handler_data)) 269 270 #define bond_slave_get_rtnl(dev) \ 271 ((struct slave *) rtnl_dereference(dev->rx_handler_data)) 272 273 void bond_queue_slave_event(struct slave *slave); 274 void bond_lower_state_changed(struct slave *slave); 275 276 struct bond_vlan_tag { 277 __be16 vlan_proto; 278 unsigned short vlan_id; 279 }; 280 281 bool bond_sk_check(struct bonding *bond); 282 283 /** 284 * Returns NULL if the net_device does not belong to any of the bond's slaves 285 * 286 * Caller must hold bond lock for read 287 */ 288 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, 289 struct net_device *slave_dev) 290 { 291 return netdev_lower_dev_get_private(bond->dev, slave_dev); 292 } 293 294 static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) 295 { 296 return slave->bond; 297 } 298 299 static inline bool bond_should_override_tx_queue(struct bonding *bond) 300 { 301 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || 302 BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; 303 } 304 305 static inline bool bond_is_lb(const struct bonding *bond) 306 { 307 return BOND_MODE(bond) == BOND_MODE_TLB || 308 BOND_MODE(bond) == BOND_MODE_ALB; 309 } 310 311 static inline bool bond_needs_speed_duplex(const struct bonding *bond) 312 { 313 return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond); 314 } 315 316 static inline bool bond_is_nondyn_tlb(const struct bonding *bond) 317 { 318 return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); 319 } 320 321 static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) 322 { 323 return (BOND_MODE(bond) == BOND_MODE_8023AD || 324 BOND_MODE(bond) == BOND_MODE_XOR || 325 BOND_MODE(bond) == BOND_MODE_TLB || 326 BOND_MODE(bond) == BOND_MODE_ALB); 327 } 328 329 static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) 330 { 331 return (BOND_MODE(bond) == BOND_MODE_8023AD || 332 BOND_MODE(bond) == BOND_MODE_XOR || 333 bond_is_nondyn_tlb(bond)); 334 } 335 336 static inline bool bond_mode_uses_arp(int mode) 337 { 338 return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && 339 mode != BOND_MODE_ALB; 340 } 341 342 static inline bool bond_mode_uses_primary(int mode) 343 { 344 return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || 345 mode == BOND_MODE_ALB; 346 } 347 348 static inline bool bond_uses_primary(struct bonding *bond) 349 { 350 return bond_mode_uses_primary(BOND_MODE(bond)); 351 } 352 353 static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) 354 { 355 struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave); 356 357 return bond_uses_primary(bond) && slave ? slave->dev : NULL; 358 } 359 360 static inline bool bond_slave_is_up(struct slave *slave) 361 { 362 return netif_running(slave->dev) && netif_carrier_ok(slave->dev); 363 } 364 365 static inline void bond_set_active_slave(struct slave *slave) 366 { 367 if (slave->backup) { 368 slave->backup = 0; 369 bond_queue_slave_event(slave); 370 bond_lower_state_changed(slave); 371 } 372 } 373 374 static inline void bond_set_backup_slave(struct slave *slave) 375 { 376 if (!slave->backup) { 377 slave->backup = 1; 378 bond_queue_slave_event(slave); 379 bond_lower_state_changed(slave); 380 } 381 } 382 383 static inline void bond_set_slave_state(struct slave *slave, 384 int slave_state, bool notify) 385 { 386 if (slave->backup == slave_state) 387 return; 388 389 slave->backup = slave_state; 390 if (notify) { 391 bond_lower_state_changed(slave); 392 bond_queue_slave_event(slave); 393 slave->should_notify = 0; 394 } else { 395 if (slave->should_notify) 396 slave->should_notify = 0; 397 else 398 slave->should_notify = 1; 399 } 400 } 401 402 static inline void bond_slave_state_change(struct bonding *bond) 403 { 404 struct list_head *iter; 405 struct slave *tmp; 406 407 bond_for_each_slave(bond, tmp, iter) { 408 if (tmp->link == BOND_LINK_UP) 409 bond_set_active_slave(tmp); 410 else if (tmp->link == BOND_LINK_DOWN) 411 bond_set_backup_slave(tmp); 412 } 413 } 414 415 static inline void bond_slave_state_notify(struct bonding *bond) 416 { 417 struct list_head *iter; 418 struct slave *tmp; 419 420 bond_for_each_slave(bond, tmp, iter) { 421 if (tmp->should_notify) { 422 bond_lower_state_changed(tmp); 423 tmp->should_notify = 0; 424 } 425 } 426 } 427 428 static inline int bond_slave_state(struct slave *slave) 429 { 430 return slave->backup; 431 } 432 433 static inline bool bond_is_active_slave(struct slave *slave) 434 { 435 return !bond_slave_state(slave); 436 } 437 438 static inline bool bond_slave_can_tx(struct slave *slave) 439 { 440 return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && 441 bond_is_active_slave(slave); 442 } 443 444 static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) 445 { 446 struct slave *slave; 447 bool active; 448 449 rcu_read_lock(); 450 slave = bond_slave_get_rcu(slave_dev); 451 active = bond_is_active_slave(slave); 452 rcu_read_unlock(); 453 454 return active; 455 } 456 457 static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) 458 { 459 if (len == ETH_ALEN) { 460 ether_addr_copy(dst, src); 461 return; 462 } 463 464 memcpy(dst, src, len); 465 } 466 467 #define BOND_PRI_RESELECT_ALWAYS 0 468 #define BOND_PRI_RESELECT_BETTER 1 469 #define BOND_PRI_RESELECT_FAILURE 2 470 471 #define BOND_FOM_NONE 0 472 #define BOND_FOM_ACTIVE 1 473 #define BOND_FOM_FOLLOW 2 474 475 #define BOND_ARP_TARGETS_ANY 0 476 #define BOND_ARP_TARGETS_ALL 1 477 478 #define BOND_ARP_VALIDATE_NONE 0 479 #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) 480 #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) 481 #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ 482 BOND_ARP_VALIDATE_BACKUP) 483 #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) 484 #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ 485 BOND_ARP_FILTER) 486 #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ 487 BOND_ARP_FILTER) 488 489 #define BOND_SLAVE_NOTIFY_NOW true 490 #define BOND_SLAVE_NOTIFY_LATER false 491 492 static inline int slave_do_arp_validate(struct bonding *bond, 493 struct slave *slave) 494 { 495 return bond->params.arp_validate & (1 << bond_slave_state(slave)); 496 } 497 498 static inline int slave_do_arp_validate_only(struct bonding *bond) 499 { 500 return bond->params.arp_validate & BOND_ARP_FILTER; 501 } 502 503 static inline int bond_is_ip_target_ok(__be32 addr) 504 { 505 return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); 506 } 507 508 #if IS_ENABLED(CONFIG_IPV6) 509 static inline int bond_is_ip6_target_ok(struct in6_addr *addr) 510 { 511 return !ipv6_addr_any(addr) && 512 !ipv6_addr_loopback(addr) && 513 !ipv6_addr_is_multicast(addr); 514 } 515 #endif 516 517 /* Get the oldest arp which we've received on this slave for bond's 518 * arp_targets. 519 */ 520 static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, 521 struct slave *slave) 522 { 523 int i = 1; 524 unsigned long ret = slave->target_last_arp_rx[0]; 525 526 for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) 527 if (time_before(slave->target_last_arp_rx[i], ret)) 528 ret = slave->target_last_arp_rx[i]; 529 530 return ret; 531 } 532 533 static inline unsigned long slave_last_rx(struct bonding *bond, 534 struct slave *slave) 535 { 536 if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) 537 return slave_oldest_target_arp_rx(bond, slave); 538 539 return slave->last_rx; 540 } 541 542 #ifdef CONFIG_NET_POLL_CONTROLLER 543 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 544 struct sk_buff *skb) 545 { 546 return netpoll_send_skb(slave->np, skb); 547 } 548 #else 549 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 550 struct sk_buff *skb) 551 { 552 BUG(); 553 return NETDEV_TX_OK; 554 } 555 #endif 556 557 static inline void bond_set_slave_inactive_flags(struct slave *slave, 558 bool notify) 559 { 560 if (!bond_is_lb(slave->bond)) 561 bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); 562 if (!slave->bond->params.all_slaves_active) 563 slave->inactive = 1; 564 } 565 566 static inline void bond_set_slave_active_flags(struct slave *slave, 567 bool notify) 568 { 569 bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); 570 slave->inactive = 0; 571 } 572 573 static inline bool bond_is_slave_inactive(struct slave *slave) 574 { 575 return slave->inactive; 576 } 577 578 static inline void bond_propose_link_state(struct slave *slave, int state) 579 { 580 slave->link_new_state = state; 581 } 582 583 static inline void bond_commit_link_state(struct slave *slave, bool notify) 584 { 585 if (slave->link_new_state == BOND_LINK_NOCHANGE) 586 return; 587 588 slave->link = slave->link_new_state; 589 if (notify) { 590 bond_queue_slave_event(slave); 591 bond_lower_state_changed(slave); 592 slave->should_notify_link = 0; 593 } else { 594 if (slave->should_notify_link) 595 slave->should_notify_link = 0; 596 else 597 slave->should_notify_link = 1; 598 } 599 } 600 601 static inline void bond_set_slave_link_state(struct slave *slave, int state, 602 bool notify) 603 { 604 bond_propose_link_state(slave, state); 605 bond_commit_link_state(slave, notify); 606 } 607 608 static inline void bond_slave_link_notify(struct bonding *bond) 609 { 610 struct list_head *iter; 611 struct slave *tmp; 612 613 bond_for_each_slave(bond, tmp, iter) { 614 if (tmp->should_notify_link) { 615 bond_queue_slave_event(tmp); 616 bond_lower_state_changed(tmp); 617 tmp->should_notify_link = 0; 618 } 619 } 620 } 621 622 static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) 623 { 624 struct in_device *in_dev; 625 __be32 addr = 0; 626 627 rcu_read_lock(); 628 in_dev = __in_dev_get_rcu(dev); 629 630 if (in_dev) 631 addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, 632 RT_SCOPE_HOST); 633 rcu_read_unlock(); 634 return addr; 635 } 636 637 struct bond_net { 638 struct net *net; /* Associated network namespace */ 639 struct list_head dev_list; 640 #ifdef CONFIG_PROC_FS 641 struct proc_dir_entry *proc_dir; 642 #endif 643 struct class_attribute class_attr_bonding_masters; 644 }; 645 646 int bond_rcv_validate(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); 647 netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); 648 int bond_create(struct net *net, const char *name); 649 int bond_create_sysfs(struct bond_net *net); 650 void bond_destroy_sysfs(struct bond_net *net); 651 void bond_prepare_sysfs_group(struct bonding *bond); 652 int bond_sysfs_slave_add(struct slave *slave); 653 void bond_sysfs_slave_del(struct slave *slave); 654 int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, 655 struct netlink_ext_ack *extack); 656 int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); 657 u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); 658 int bond_set_carrier(struct bonding *bond); 659 void bond_select_active_slave(struct bonding *bond); 660 void bond_change_active_slave(struct bonding *bond, struct slave *new_active); 661 void bond_create_debugfs(void); 662 void bond_destroy_debugfs(void); 663 void bond_debug_register(struct bonding *bond); 664 void bond_debug_unregister(struct bonding *bond); 665 void bond_debug_reregister(struct bonding *bond); 666 const char *bond_mode_name(int mode); 667 void bond_setup(struct net_device *bond_dev); 668 unsigned int bond_get_num_tx_queues(void); 669 int bond_netlink_init(void); 670 void bond_netlink_fini(void); 671 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); 672 const char *bond_slave_link_status(s8 link); 673 struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, 674 struct net_device *end_dev, 675 int level); 676 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); 677 void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); 678 void bond_work_init_all(struct bonding *bond); 679 680 #ifdef CONFIG_PROC_FS 681 void bond_create_proc_entry(struct bonding *bond); 682 void bond_remove_proc_entry(struct bonding *bond); 683 void bond_create_proc_dir(struct bond_net *bn); 684 void bond_destroy_proc_dir(struct bond_net *bn); 685 #else 686 static inline void bond_create_proc_entry(struct bonding *bond) 687 { 688 } 689 690 static inline void bond_remove_proc_entry(struct bonding *bond) 691 { 692 } 693 694 static inline void bond_create_proc_dir(struct bond_net *bn) 695 { 696 } 697 698 static inline void bond_destroy_proc_dir(struct bond_net *bn) 699 { 700 } 701 #endif 702 703 static inline struct slave *bond_slave_has_mac(struct bonding *bond, 704 const u8 *mac) 705 { 706 struct list_head *iter; 707 struct slave *tmp; 708 709 bond_for_each_slave(bond, tmp, iter) 710 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 711 return tmp; 712 713 return NULL; 714 } 715 716 /* Caller must hold rcu_read_lock() for read */ 717 static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) 718 { 719 struct list_head *iter; 720 struct slave *tmp; 721 struct netdev_hw_addr *ha; 722 723 bond_for_each_slave_rcu(bond, tmp, iter) 724 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 725 return true; 726 727 if (netdev_uc_empty(bond->dev)) 728 return false; 729 730 netdev_for_each_uc_addr(ha, bond->dev) 731 if (ether_addr_equal_64bits(mac, ha->addr)) 732 return true; 733 734 return false; 735 } 736 737 /* Check if the ip is present in arp ip list, or first free slot if ip == 0 738 * Returns -1 if not found, index if found 739 */ 740 static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) 741 { 742 int i; 743 744 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 745 if (targets[i] == ip) 746 return i; 747 else if (targets[i] == 0) 748 break; 749 750 return -1; 751 } 752 753 #if IS_ENABLED(CONFIG_IPV6) 754 static inline int bond_get_targets_ip6(struct in6_addr *targets, struct in6_addr *ip) 755 { 756 int i; 757 758 for (i = 0; i < BOND_MAX_NS_TARGETS; i++) 759 if (ipv6_addr_equal(&targets[i], ip)) 760 return i; 761 else if (ipv6_addr_any(&targets[i])) 762 break; 763 764 return -1; 765 } 766 #endif 767 768 /* exported from bond_main.c */ 769 extern unsigned int bond_net_id; 770 771 /* exported from bond_netlink.c */ 772 extern struct rtnl_link_ops bond_link_ops; 773 774 /* exported from bond_sysfs_slave.c */ 775 extern const struct sysfs_ops slave_sysfs_ops; 776 777 static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) 778 { 779 dev_core_stats_tx_dropped_inc(dev); 780 dev_kfree_skb_any(skb); 781 return NET_XMIT_DROP; 782 } 783 784 #endif /* _NET_BONDING_H */ 785