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 struct bond_ipsec { 205 struct list_head list; 206 struct xfrm_state *xs; 207 }; 208 209 /* 210 * Here are the locking policies for the two bonding locks: 211 * Get rcu_read_lock when reading or RTNL when writing slave list. 212 */ 213 struct bonding { 214 struct net_device *dev; /* first - useful for panic debug */ 215 struct slave __rcu *curr_active_slave; 216 struct slave __rcu *current_arp_slave; 217 struct slave __rcu *primary_slave; 218 struct bond_up_slave __rcu *usable_slaves; 219 struct bond_up_slave __rcu *all_slaves; 220 bool force_primary; 221 s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ 222 int (*recv_probe)(const struct sk_buff *, struct bonding *, 223 struct slave *); 224 /* mode_lock is used for mode-specific locking needs, currently used by: 225 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and 226 * bond_3ad_state_machine_handler() concurrently and also 227 * the access to the state machine shared variables. 228 * TLB mode (5) - to sync the use and modifications of its hash table 229 * ALB mode (6) - to sync the use and modifications of its hash table 230 */ 231 spinlock_t mode_lock; 232 spinlock_t stats_lock; 233 u8 send_peer_notif; 234 u8 igmp_retrans; 235 #ifdef CONFIG_PROC_FS 236 struct proc_dir_entry *proc_entry; 237 char proc_file_name[IFNAMSIZ]; 238 #endif /* CONFIG_PROC_FS */ 239 struct list_head bond_list; 240 u32 __percpu *rr_tx_counter; 241 struct ad_bond_info ad_info; 242 struct alb_bond_info alb_info; 243 struct bond_params params; 244 struct workqueue_struct *wq; 245 struct delayed_work mii_work; 246 struct delayed_work arp_work; 247 struct delayed_work alb_work; 248 struct delayed_work ad_work; 249 struct delayed_work mcast_work; 250 struct delayed_work slave_arr_work; 251 #ifdef CONFIG_DEBUG_FS 252 /* debugging support via debugfs */ 253 struct dentry *debug_dir; 254 #endif /* CONFIG_DEBUG_FS */ 255 struct rtnl_link_stats64 bond_stats; 256 #ifdef CONFIG_XFRM_OFFLOAD 257 struct list_head ipsec_list; 258 /* protecting ipsec_list */ 259 spinlock_t ipsec_lock; 260 #endif /* CONFIG_XFRM_OFFLOAD */ 261 }; 262 263 #define bond_slave_get_rcu(dev) \ 264 ((struct slave *) rcu_dereference(dev->rx_handler_data)) 265 266 #define bond_slave_get_rtnl(dev) \ 267 ((struct slave *) rtnl_dereference(dev->rx_handler_data)) 268 269 void bond_queue_slave_event(struct slave *slave); 270 void bond_lower_state_changed(struct slave *slave); 271 272 struct bond_vlan_tag { 273 __be16 vlan_proto; 274 unsigned short vlan_id; 275 }; 276 277 bool bond_sk_check(struct bonding *bond); 278 279 /** 280 * Returns NULL if the net_device does not belong to any of the bond's slaves 281 * 282 * Caller must hold bond lock for read 283 */ 284 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, 285 struct net_device *slave_dev) 286 { 287 return netdev_lower_dev_get_private(bond->dev, slave_dev); 288 } 289 290 static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) 291 { 292 return slave->bond; 293 } 294 295 static inline bool bond_should_override_tx_queue(struct bonding *bond) 296 { 297 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || 298 BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; 299 } 300 301 static inline bool bond_is_lb(const struct bonding *bond) 302 { 303 return BOND_MODE(bond) == BOND_MODE_TLB || 304 BOND_MODE(bond) == BOND_MODE_ALB; 305 } 306 307 static inline bool bond_needs_speed_duplex(const struct bonding *bond) 308 { 309 return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond); 310 } 311 312 static inline bool bond_is_nondyn_tlb(const struct bonding *bond) 313 { 314 return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); 315 } 316 317 static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) 318 { 319 return (BOND_MODE(bond) == BOND_MODE_8023AD || 320 BOND_MODE(bond) == BOND_MODE_XOR || 321 BOND_MODE(bond) == BOND_MODE_TLB || 322 BOND_MODE(bond) == BOND_MODE_ALB); 323 } 324 325 static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) 326 { 327 return (BOND_MODE(bond) == BOND_MODE_8023AD || 328 BOND_MODE(bond) == BOND_MODE_XOR || 329 bond_is_nondyn_tlb(bond)); 330 } 331 332 static inline bool bond_mode_uses_arp(int mode) 333 { 334 return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && 335 mode != BOND_MODE_ALB; 336 } 337 338 static inline bool bond_mode_uses_primary(int mode) 339 { 340 return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || 341 mode == BOND_MODE_ALB; 342 } 343 344 static inline bool bond_uses_primary(struct bonding *bond) 345 { 346 return bond_mode_uses_primary(BOND_MODE(bond)); 347 } 348 349 static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) 350 { 351 struct slave *slave = rcu_dereference(bond->curr_active_slave); 352 353 return bond_uses_primary(bond) && slave ? slave->dev : NULL; 354 } 355 356 static inline bool bond_slave_is_up(struct slave *slave) 357 { 358 return netif_running(slave->dev) && netif_carrier_ok(slave->dev); 359 } 360 361 static inline void bond_set_active_slave(struct slave *slave) 362 { 363 if (slave->backup) { 364 slave->backup = 0; 365 bond_queue_slave_event(slave); 366 bond_lower_state_changed(slave); 367 } 368 } 369 370 static inline void bond_set_backup_slave(struct slave *slave) 371 { 372 if (!slave->backup) { 373 slave->backup = 1; 374 bond_queue_slave_event(slave); 375 bond_lower_state_changed(slave); 376 } 377 } 378 379 static inline void bond_set_slave_state(struct slave *slave, 380 int slave_state, bool notify) 381 { 382 if (slave->backup == slave_state) 383 return; 384 385 slave->backup = slave_state; 386 if (notify) { 387 bond_lower_state_changed(slave); 388 bond_queue_slave_event(slave); 389 slave->should_notify = 0; 390 } else { 391 if (slave->should_notify) 392 slave->should_notify = 0; 393 else 394 slave->should_notify = 1; 395 } 396 } 397 398 static inline void bond_slave_state_change(struct bonding *bond) 399 { 400 struct list_head *iter; 401 struct slave *tmp; 402 403 bond_for_each_slave(bond, tmp, iter) { 404 if (tmp->link == BOND_LINK_UP) 405 bond_set_active_slave(tmp); 406 else if (tmp->link == BOND_LINK_DOWN) 407 bond_set_backup_slave(tmp); 408 } 409 } 410 411 static inline void bond_slave_state_notify(struct bonding *bond) 412 { 413 struct list_head *iter; 414 struct slave *tmp; 415 416 bond_for_each_slave(bond, tmp, iter) { 417 if (tmp->should_notify) { 418 bond_lower_state_changed(tmp); 419 tmp->should_notify = 0; 420 } 421 } 422 } 423 424 static inline int bond_slave_state(struct slave *slave) 425 { 426 return slave->backup; 427 } 428 429 static inline bool bond_is_active_slave(struct slave *slave) 430 { 431 return !bond_slave_state(slave); 432 } 433 434 static inline bool bond_slave_can_tx(struct slave *slave) 435 { 436 return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && 437 bond_is_active_slave(slave); 438 } 439 440 static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) 441 { 442 struct slave *slave; 443 bool active; 444 445 rcu_read_lock(); 446 slave = bond_slave_get_rcu(slave_dev); 447 active = bond_is_active_slave(slave); 448 rcu_read_unlock(); 449 450 return active; 451 } 452 453 static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) 454 { 455 if (len == ETH_ALEN) { 456 ether_addr_copy(dst, src); 457 return; 458 } 459 460 memcpy(dst, src, len); 461 } 462 463 #define BOND_PRI_RESELECT_ALWAYS 0 464 #define BOND_PRI_RESELECT_BETTER 1 465 #define BOND_PRI_RESELECT_FAILURE 2 466 467 #define BOND_FOM_NONE 0 468 #define BOND_FOM_ACTIVE 1 469 #define BOND_FOM_FOLLOW 2 470 471 #define BOND_ARP_TARGETS_ANY 0 472 #define BOND_ARP_TARGETS_ALL 1 473 474 #define BOND_ARP_VALIDATE_NONE 0 475 #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) 476 #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) 477 #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ 478 BOND_ARP_VALIDATE_BACKUP) 479 #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) 480 #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ 481 BOND_ARP_FILTER) 482 #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ 483 BOND_ARP_FILTER) 484 485 #define BOND_SLAVE_NOTIFY_NOW true 486 #define BOND_SLAVE_NOTIFY_LATER false 487 488 static inline int slave_do_arp_validate(struct bonding *bond, 489 struct slave *slave) 490 { 491 return bond->params.arp_validate & (1 << bond_slave_state(slave)); 492 } 493 494 static inline int slave_do_arp_validate_only(struct bonding *bond) 495 { 496 return bond->params.arp_validate & BOND_ARP_FILTER; 497 } 498 499 static inline int bond_is_ip_target_ok(__be32 addr) 500 { 501 return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); 502 } 503 504 /* Get the oldest arp which we've received on this slave for bond's 505 * arp_targets. 506 */ 507 static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, 508 struct slave *slave) 509 { 510 int i = 1; 511 unsigned long ret = slave->target_last_arp_rx[0]; 512 513 for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) 514 if (time_before(slave->target_last_arp_rx[i], ret)) 515 ret = slave->target_last_arp_rx[i]; 516 517 return ret; 518 } 519 520 static inline unsigned long slave_last_rx(struct bonding *bond, 521 struct slave *slave) 522 { 523 if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) 524 return slave_oldest_target_arp_rx(bond, slave); 525 526 return slave->last_rx; 527 } 528 529 #ifdef CONFIG_NET_POLL_CONTROLLER 530 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 531 struct sk_buff *skb) 532 { 533 return netpoll_send_skb(slave->np, skb); 534 } 535 #else 536 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 537 struct sk_buff *skb) 538 { 539 BUG(); 540 return NETDEV_TX_OK; 541 } 542 #endif 543 544 static inline void bond_set_slave_inactive_flags(struct slave *slave, 545 bool notify) 546 { 547 if (!bond_is_lb(slave->bond)) 548 bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); 549 if (!slave->bond->params.all_slaves_active) 550 slave->inactive = 1; 551 } 552 553 static inline void bond_set_slave_active_flags(struct slave *slave, 554 bool notify) 555 { 556 bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); 557 slave->inactive = 0; 558 } 559 560 static inline bool bond_is_slave_inactive(struct slave *slave) 561 { 562 return slave->inactive; 563 } 564 565 static inline void bond_propose_link_state(struct slave *slave, int state) 566 { 567 slave->link_new_state = state; 568 } 569 570 static inline void bond_commit_link_state(struct slave *slave, bool notify) 571 { 572 if (slave->link_new_state == BOND_LINK_NOCHANGE) 573 return; 574 575 slave->link = slave->link_new_state; 576 if (notify) { 577 bond_queue_slave_event(slave); 578 bond_lower_state_changed(slave); 579 slave->should_notify_link = 0; 580 } else { 581 if (slave->should_notify_link) 582 slave->should_notify_link = 0; 583 else 584 slave->should_notify_link = 1; 585 } 586 } 587 588 static inline void bond_set_slave_link_state(struct slave *slave, int state, 589 bool notify) 590 { 591 bond_propose_link_state(slave, state); 592 bond_commit_link_state(slave, notify); 593 } 594 595 static inline void bond_slave_link_notify(struct bonding *bond) 596 { 597 struct list_head *iter; 598 struct slave *tmp; 599 600 bond_for_each_slave(bond, tmp, iter) { 601 if (tmp->should_notify_link) { 602 bond_queue_slave_event(tmp); 603 bond_lower_state_changed(tmp); 604 tmp->should_notify_link = 0; 605 } 606 } 607 } 608 609 static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) 610 { 611 struct in_device *in_dev; 612 __be32 addr = 0; 613 614 rcu_read_lock(); 615 in_dev = __in_dev_get_rcu(dev); 616 617 if (in_dev) 618 addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, 619 RT_SCOPE_HOST); 620 rcu_read_unlock(); 621 return addr; 622 } 623 624 struct bond_net { 625 struct net *net; /* Associated network namespace */ 626 struct list_head dev_list; 627 #ifdef CONFIG_PROC_FS 628 struct proc_dir_entry *proc_dir; 629 #endif 630 struct class_attribute class_attr_bonding_masters; 631 }; 632 633 int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); 634 netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); 635 int bond_create(struct net *net, const char *name); 636 int bond_create_sysfs(struct bond_net *net); 637 void bond_destroy_sysfs(struct bond_net *net); 638 void bond_prepare_sysfs_group(struct bonding *bond); 639 int bond_sysfs_slave_add(struct slave *slave); 640 void bond_sysfs_slave_del(struct slave *slave); 641 int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, 642 struct netlink_ext_ack *extack); 643 int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); 644 u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); 645 int bond_set_carrier(struct bonding *bond); 646 void bond_select_active_slave(struct bonding *bond); 647 void bond_change_active_slave(struct bonding *bond, struct slave *new_active); 648 void bond_create_debugfs(void); 649 void bond_destroy_debugfs(void); 650 void bond_debug_register(struct bonding *bond); 651 void bond_debug_unregister(struct bonding *bond); 652 void bond_debug_reregister(struct bonding *bond); 653 const char *bond_mode_name(int mode); 654 void bond_setup(struct net_device *bond_dev); 655 unsigned int bond_get_num_tx_queues(void); 656 int bond_netlink_init(void); 657 void bond_netlink_fini(void); 658 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); 659 const char *bond_slave_link_status(s8 link); 660 struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, 661 struct net_device *end_dev, 662 int level); 663 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); 664 void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); 665 void bond_work_init_all(struct bonding *bond); 666 667 #ifdef CONFIG_PROC_FS 668 void bond_create_proc_entry(struct bonding *bond); 669 void bond_remove_proc_entry(struct bonding *bond); 670 void bond_create_proc_dir(struct bond_net *bn); 671 void bond_destroy_proc_dir(struct bond_net *bn); 672 #else 673 static inline void bond_create_proc_entry(struct bonding *bond) 674 { 675 } 676 677 static inline void bond_remove_proc_entry(struct bonding *bond) 678 { 679 } 680 681 static inline void bond_create_proc_dir(struct bond_net *bn) 682 { 683 } 684 685 static inline void bond_destroy_proc_dir(struct bond_net *bn) 686 { 687 } 688 #endif 689 690 static inline struct slave *bond_slave_has_mac(struct bonding *bond, 691 const u8 *mac) 692 { 693 struct list_head *iter; 694 struct slave *tmp; 695 696 bond_for_each_slave(bond, tmp, iter) 697 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 698 return tmp; 699 700 return NULL; 701 } 702 703 /* Caller must hold rcu_read_lock() for read */ 704 static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond, 705 const u8 *mac) 706 { 707 struct list_head *iter; 708 struct slave *tmp; 709 710 bond_for_each_slave_rcu(bond, tmp, iter) 711 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 712 return tmp; 713 714 return NULL; 715 } 716 717 /* Caller must hold rcu_read_lock() for read */ 718 static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) 719 { 720 struct list_head *iter; 721 struct slave *tmp; 722 struct netdev_hw_addr *ha; 723 724 bond_for_each_slave_rcu(bond, tmp, iter) 725 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 726 return true; 727 728 if (netdev_uc_empty(bond->dev)) 729 return false; 730 731 netdev_for_each_uc_addr(ha, bond->dev) 732 if (ether_addr_equal_64bits(mac, ha->addr)) 733 return true; 734 735 return false; 736 } 737 738 /* Check if the ip is present in arp ip list, or first free slot if ip == 0 739 * Returns -1 if not found, index if found 740 */ 741 static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) 742 { 743 int i; 744 745 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 746 if (targets[i] == ip) 747 return i; 748 else if (targets[i] == 0) 749 break; 750 751 return -1; 752 } 753 754 /* exported from bond_main.c */ 755 extern unsigned int bond_net_id; 756 extern const struct bond_parm_tbl bond_lacp_tbl[]; 757 extern const struct bond_parm_tbl xmit_hashtype_tbl[]; 758 extern const struct bond_parm_tbl arp_validate_tbl[]; 759 extern const struct bond_parm_tbl arp_all_targets_tbl[]; 760 extern const struct bond_parm_tbl fail_over_mac_tbl[]; 761 extern const struct bond_parm_tbl pri_reselect_tbl[]; 762 extern struct bond_parm_tbl ad_select_tbl[]; 763 764 /* exported from bond_netlink.c */ 765 extern struct rtnl_link_ops bond_link_ops; 766 767 /* exported from bond_sysfs_slave.c */ 768 extern const struct sysfs_ops slave_sysfs_ops; 769 770 static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) 771 { 772 atomic_long_inc(&dev->tx_dropped); 773 dev_kfree_skb_any(skb); 774 return NET_XMIT_DROP; 775 } 776 777 #endif /* _NET_BONDING_H */ 778