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