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