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