bonding.h 19 KB
Newer Older
Linus Torvalds's avatar
Linus Torvalds committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
/*
 * Bond several ethernet interfaces into a Cisco, running 'Etherchannel'.
 *
 * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes
 * NCM: Network and Communications Management, Inc.
 *
 * BUT, I'm the one who modified it for ethernet, so:
 * (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov
 *
 *	This software may be used and distributed according to the terms
 *	of the GNU Public License, incorporated herein by reference.
 *
 */

15
16
#ifndef _NET_BONDING_H
#define _NET_BONDING_H
Linus Torvalds's avatar
Linus Torvalds committed
17
18
19
20

#include <linux/timer.h>
#include <linux/proc_fs.h>
#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
30
31
#include <net/bond_3ad.h>
#include <net/bond_alb.h>
#include <net/bond_options.h>
Linus Torvalds's avatar
Linus Torvalds committed
32
33
34

#define BOND_MAX_ARP_TARGETS	16

35
36
#define BOND_DEFAULT_MIIMON	100

37
38
39
#ifndef __long_aligned
#define __long_aligned __attribute__((aligned((sizeof(long)))))
#endif
Linus Torvalds's avatar
Linus Torvalds committed
40

41
42
#define BOND_MODE(bond) ((bond)->params.mode)

43
/* slave list primitives */
44
45
46
#define bond_slave_list(bond) (&(bond)->dev->adj_list.lower)

#define bond_has_slaves(bond) !list_empty(bond_slave_list(bond))
47

48
49
/* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */
#define bond_first_slave(bond) \
50
51
52
	(bond_has_slaves(bond) ? \
		netdev_adjacent_get_private(bond_slave_list(bond)->next) : \
		NULL)
53
#define bond_last_slave(bond) \
54
55
56
	(bond_has_slaves(bond) ? \
		netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \
		NULL)
57

58
59
60
61
/* Caller must have rcu_read_lock */
#define bond_first_slave_rcu(bond) \
	netdev_lower_get_first_private_rcu(bond->dev)

62
63
#define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond))
#define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond))
64

Linus Torvalds's avatar
Linus Torvalds committed
65
/**
66
67
68
 * bond_for_each_slave - iterate over all slaves
 * @bond:	the bond holding this list
 * @pos:	current slave
69
 * @iter:	list_head * iterator
Linus Torvalds's avatar
Linus Torvalds committed
70
 *
71
 * Caller must hold RTNL
Linus Torvalds's avatar
Linus Torvalds committed
72
 */
73
74
#define bond_for_each_slave(bond, pos, iter) \
	netdev_for_each_lower_private((bond)->dev, pos, iter)
Linus Torvalds's avatar
Linus Torvalds committed
75

76
/* Caller must have rcu_read_lock */
77
78
#define bond_for_each_slave_rcu(bond, pos, iter) \
	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
83
84

static inline void block_netpoll_tx(void)
{
85
	atomic_inc(&netpoll_block_tx);
86
87
88
89
}

static inline void unblock_netpoll_tx(void)
{
90
	atomic_dec(&netpoll_block_tx);
91
92
93
94
}

static inline int is_netpoll_tx_blocked(struct net_device *dev)
{
95
	if (unlikely(netpoll_tx_running(dev)))
96
		return atomic_read(&netpoll_block_tx);
97
98
99
100
101
102
103
104
	return 0;
}
#else
#define block_netpoll_tx()
#define unblock_netpoll_tx()
#define is_netpoll_tx_blocked(dev) (0)
#endif

Linus Torvalds's avatar
Linus Torvalds committed
105
106
struct bond_params {
	int mode;
107
	int xmit_policy;
Linus Torvalds's avatar
Linus Torvalds committed
108
	int miimon;
109
	u8 num_peer_notif;
Linus Torvalds's avatar
Linus Torvalds committed
110
	int arp_interval;
111
	int arp_validate;
112
	int arp_all_targets;
Linus Torvalds's avatar
Linus Torvalds committed
113
	int use_carrier;
114
	int fail_over_mac;
Linus Torvalds's avatar
Linus Torvalds committed
115
116
117
	int updelay;
	int downdelay;
	int lacp_fast;
118
	unsigned int min_links;
119
	int ad_select;
Linus Torvalds's avatar
Linus Torvalds committed
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
134

	/* 2 bytes of padding : see ether_addr_equal_64bits() */
	u8 ad_actor_system[ETH_ALEN + 2];
Linus Torvalds's avatar
Linus Torvalds committed
135
136
};

137
138
139
140
141
struct bond_parm_tbl {
	char *modename;
	int mode;
};

142
143
144
struct netdev_notify_work {
	struct delayed_work	work;
	struct net_device	*dev;
145
	struct netdev_bonding_info bonding_info;
146
147
};

Linus Torvalds's avatar
Linus Torvalds committed
148
struct slave {
149
	struct net_device *dev; /* first - useful for panic debug */
Jiri Pirko's avatar
Jiri Pirko committed
150
	struct bonding *bond; /* our master */
151
	int    delay;
152
153
	/* all three in jiffies */
	unsigned long last_link_up;
154
	unsigned long last_rx;
155
	unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS];
156
157
	s8     link;		/* one of BOND_LINK_XXXX */
	s8     link_new_state;	/* one of BOND_LINK_XXXX */
158
	s8     new_link;
159
160
	u8     backup:1,   /* indicates backup slave. Value corresponds with
			      BOND_STATE_ACTIVE and BOND_STATE_BACKUP */
161
	       inactive:1, /* indicates inactive slave */
162
163
	       should_notify:1, /* indicates whether the state changed */
	       should_notify_link:1; /* indicates whether the link changed */
164
	u8     duplex;
165
	u32    original_mtu;
Linus Torvalds's avatar
Linus Torvalds committed
166
	u32    link_failure_count;
167
	u32    speed;
168
	u16    queue_id;
169
	u8     perm_hwaddr[MAX_ADDR_LEN];
170
	struct ad_slave_info *ad_info;
Linus Torvalds's avatar
Linus Torvalds committed
171
	struct tlb_slave_info tlb_info;
172
173
174
#ifdef CONFIG_NET_POLL_CONTROLLER
	struct netpoll *np;
#endif
175
	struct kobject kobj;
176
	struct rtnl_link_stats64 slave_stats;
Linus Torvalds's avatar
Linus Torvalds committed
177
178
};

179
180
181
182
183
184
struct bond_up_slave {
	unsigned int	count;
	struct rcu_head rcu;
	struct slave	*arr[0];
};

185
186
187
188
189
/*
 * Link pseudo-state only used internally by monitors
 */
#define BOND_LINK_NOCHANGE -1

Linus Torvalds's avatar
Linus Torvalds committed
190
191
/*
 * Here are the locking policies for the two bonding locks:
192
 * Get rcu_read_lock when reading or RTNL when writing slave list.
Linus Torvalds's avatar
Linus Torvalds committed
193
194
 */
struct bonding {
195
	struct   net_device *dev; /* first - useful for panic debug */
196
	struct   slave __rcu *curr_active_slave;
197
	struct   slave __rcu *current_arp_slave;
198
	struct   slave __rcu *primary_slave;
199
	struct   bond_up_slave __rcu *slave_arr; /* Array of usable slaves */
200
	bool     force_primary;
Linus Torvalds's avatar
Linus Torvalds committed
201
	s32      slave_cnt; /* never change this value outside the attach/detach wrappers */
202
203
	int     (*recv_probe)(const struct sk_buff *, struct bonding *,
			      struct slave *);
204
205
	/* mode_lock is used for mode-specific locking needs, currently used by:
	 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and
206
207
	 *                bond_3ad_state_machine_handler() concurrently and also
	 *                the access to the state machine shared variables.
208
209
210
	 * TLB mode (5) - to sync the use and modifications of its hash table
	 * ALB mode (6) - to sync the use and modifications of its hash table
	 */
211
	spinlock_t mode_lock;
Eric Dumazet's avatar
Eric Dumazet committed
212
	spinlock_t stats_lock;
213
	u8	 send_peer_notif;
214
	u8       igmp_retrans;
Linus Torvalds's avatar
Linus Torvalds committed
215
216
217
218
219
#ifdef CONFIG_PROC_FS
	struct   proc_dir_entry *proc_entry;
	char     proc_file_name[IFNAMSIZ];
#endif /* CONFIG_PROC_FS */
	struct   list_head bond_list;
220
	u32      rr_tx_counter;
Linus Torvalds's avatar
Linus Torvalds committed
221
222
223
	struct   ad_bond_info ad_info;
	struct   alb_bond_info alb_info;
	struct   bond_params params;
224
225
226
227
228
	struct   workqueue_struct *wq;
	struct   delayed_work mii_work;
	struct   delayed_work arp_work;
	struct   delayed_work alb_work;
	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
234
	struct	 dentry *debug_dir;
#endif /* CONFIG_DEBUG_FS */
235
	struct rtnl_link_stats64 bond_stats;
Linus Torvalds's avatar
Linus Torvalds committed
236
237
};

238
239
240
#define bond_slave_get_rcu(dev) \
	((struct slave *) rcu_dereference(dev->rx_handler_data))

241
242
243
#define bond_slave_get_rtnl(dev) \
	((struct slave *) rtnl_dereference(dev->rx_handler_data))

244
void bond_queue_slave_event(struct slave *slave);
245
void bond_lower_state_changed(struct slave *slave);
246

247
248
249
250
251
struct bond_vlan_tag {
	__be16		vlan_proto;
	unsigned short	vlan_id;
};

Linus Torvalds's avatar
Linus Torvalds committed
252
253
254
255
256
/**
 * Returns NULL if the net_device does not belong to any of the bond's slaves
 *
 * Caller must hold bond lock for read
 */
257
258
static inline struct slave *bond_get_slave_by_dev(struct bonding *bond,
						  struct net_device *slave_dev)
Linus Torvalds's avatar
Linus Torvalds committed
259
{
260
	return netdev_lower_dev_get_private(bond->dev, slave_dev);
Linus Torvalds's avatar
Linus Torvalds committed
261
262
}

263
static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
Linus Torvalds's avatar
Linus Torvalds committed
264
{
265
	return slave->bond;
Linus Torvalds's avatar
Linus Torvalds committed
266
267
}

268
269
static inline bool bond_should_override_tx_queue(struct bonding *bond)
{
270
271
	return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP ||
	       BOND_MODE(bond) == BOND_MODE_ROUNDROBIN;
272
273
}

274
275
static inline bool bond_is_lb(const struct bonding *bond)
{
276
277
	return BOND_MODE(bond) == BOND_MODE_TLB ||
	       BOND_MODE(bond) == BOND_MODE_ALB;
278
279
}

280
281
282
283
284
285
static inline bool bond_is_nondyn_tlb(const struct bonding *bond)
{
	return (BOND_MODE(bond) == BOND_MODE_TLB)  &&
	       (bond->params.tlb_dynamic_lb == 0);
}

286
287
288
289
290
291
292
static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond)
{
	return (BOND_MODE(bond) == BOND_MODE_8023AD ||
		BOND_MODE(bond) == BOND_MODE_XOR ||
		bond_is_nondyn_tlb(bond));
}

293
294
295
296
297
298
static inline bool bond_mode_uses_arp(int mode)
{
	return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB &&
	       mode != BOND_MODE_ALB;
}

299
300
301
302
303
304
305
306
static inline bool bond_mode_uses_primary(int mode)
{
	return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB ||
	       mode == BOND_MODE_ALB;
}

static inline bool bond_uses_primary(struct bonding *bond)
{
307
	return bond_mode_uses_primary(BOND_MODE(bond));
308
309
}

310
311
312
313
314
315
316
static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
{
	struct slave *slave = rcu_dereference(bond->curr_active_slave);

	return bond_uses_primary(bond) && slave ? slave->dev : NULL;
}

317
318
319
320
321
static inline bool bond_slave_is_up(struct slave *slave)
{
	return netif_running(slave->dev) && netif_carrier_ok(slave->dev);
}

Jiri Pirko's avatar
Jiri Pirko committed
322
323
static inline void bond_set_active_slave(struct slave *slave)
{
324
325
	if (slave->backup) {
		slave->backup = 0;
326
		bond_queue_slave_event(slave);
327
		bond_lower_state_changed(slave);
328
		rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC);
329
	}
Jiri Pirko's avatar
Jiri Pirko committed
330
331
332
333
}

static inline void bond_set_backup_slave(struct slave *slave)
{
334
335
	if (!slave->backup) {
		slave->backup = 1;
336
		bond_queue_slave_event(slave);
337
		bond_lower_state_changed(slave);
338
		rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC);
339
	}
Jiri Pirko's avatar
Jiri Pirko committed
340
341
}

342
343
344
345
346
347
348
349
static inline void bond_set_slave_state(struct slave *slave,
					int slave_state, bool notify)
{
	if (slave->backup == slave_state)
		return;

	slave->backup = slave_state;
	if (notify) {
350
		bond_lower_state_changed(slave);
351
		rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC);
352
		bond_queue_slave_event(slave);
353
354
355
356
357
358
359
360
361
		slave->should_notify = 0;
	} else {
		if (slave->should_notify)
			slave->should_notify = 0;
		else
			slave->should_notify = 1;
	}
}

362
363
364
365
366
367
368
369
370
371
372
373
374
static inline void bond_slave_state_change(struct bonding *bond)
{
	struct list_head *iter;
	struct slave *tmp;

	bond_for_each_slave(bond, tmp, iter) {
		if (tmp->link == BOND_LINK_UP)
			bond_set_active_slave(tmp);
		else if (tmp->link == BOND_LINK_DOWN)
			bond_set_backup_slave(tmp);
	}
}

375
376
377
378
379
380
381
static inline void bond_slave_state_notify(struct bonding *bond)
{
	struct list_head *iter;
	struct slave *tmp;

	bond_for_each_slave(bond, tmp, iter) {
		if (tmp->should_notify) {
382
			bond_lower_state_changed(tmp);
383
			rtmsg_ifinfo(RTM_NEWLINK, tmp->dev, 0, GFP_ATOMIC);
384
385
386
387
388
			tmp->should_notify = 0;
		}
	}
}

Jiri Pirko's avatar
Jiri Pirko committed
389
390
391
392
393
394
395
396
397
398
static inline int bond_slave_state(struct slave *slave)
{
	return slave->backup;
}

static inline bool bond_is_active_slave(struct slave *slave)
{
	return !bond_slave_state(slave);
}

399
400
401
402
403
404
static inline bool bond_slave_can_tx(struct slave *slave)
{
	return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP &&
	       bond_is_active_slave(slave);
}

405
406
407
408
409
410
411
412
413
414
static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len)
{
	if (len == ETH_ALEN) {
		ether_addr_copy(dst, src);
		return;
	}

	memcpy(dst, src, len);
}

415
416
417
418
#define BOND_PRI_RESELECT_ALWAYS	0
#define BOND_PRI_RESELECT_BETTER	1
#define BOND_PRI_RESELECT_FAILURE	2

419
420
421
422
#define BOND_FOM_NONE			0
#define BOND_FOM_ACTIVE			1
#define BOND_FOM_FOLLOW			2

423
424
425
#define BOND_ARP_TARGETS_ANY		0
#define BOND_ARP_TARGETS_ALL		1

426
427
428
429
430
#define BOND_ARP_VALIDATE_NONE		0
#define BOND_ARP_VALIDATE_ACTIVE	(1 << BOND_STATE_ACTIVE)
#define BOND_ARP_VALIDATE_BACKUP	(1 << BOND_STATE_BACKUP)
#define BOND_ARP_VALIDATE_ALL		(BOND_ARP_VALIDATE_ACTIVE | \
					 BOND_ARP_VALIDATE_BACKUP)
431
432
433
434
435
#define BOND_ARP_FILTER			(BOND_ARP_VALIDATE_ALL + 1)
#define BOND_ARP_FILTER_ACTIVE		(BOND_ARP_VALIDATE_ACTIVE | \
					 BOND_ARP_FILTER)
#define BOND_ARP_FILTER_BACKUP		(BOND_ARP_VALIDATE_BACKUP | \
					 BOND_ARP_FILTER)
436

437
438
439
#define BOND_SLAVE_NOTIFY_NOW		true
#define BOND_SLAVE_NOTIFY_LATER		false

440
441
static inline int slave_do_arp_validate(struct bonding *bond,
					struct slave *slave)
442
{
Jiri Pirko's avatar
Jiri Pirko committed
443
	return bond->params.arp_validate & (1 << bond_slave_state(slave));
444
445
}

446
static inline int slave_do_arp_validate_only(struct bonding *bond)
447
448
449
450
{
	return bond->params.arp_validate & BOND_ARP_FILTER;
}

451
452
453
454
455
static inline int bond_is_ip_target_ok(__be32 addr)
{
	return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr);
}

456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
/* Get the oldest arp which we've received on this slave for bond's
 * arp_targets.
 */
static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond,
						       struct slave *slave)
{
	int i = 1;
	unsigned long ret = slave->target_last_arp_rx[0];

	for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++)
		if (time_before(slave->target_last_arp_rx[i], ret))
			ret = slave->target_last_arp_rx[i];

	return ret;
}

472
static inline unsigned long slave_last_rx(struct bonding *bond,
473
					struct slave *slave)
474
{
475
476
	if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL)
		return slave_oldest_target_arp_rx(bond, slave);
477

478
	return slave->last_rx;
479
480
}

481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
#ifdef CONFIG_NET_POLL_CONTROLLER
static inline void bond_netpoll_send_skb(const struct slave *slave,
					 struct sk_buff *skb)
{
	struct netpoll *np = slave->np;

	if (np)
		netpoll_send_skb(np, skb);
}
#else
static inline void bond_netpoll_send_skb(const struct slave *slave,
					 struct sk_buff *skb)
{
}
#endif

497
498
static inline void bond_set_slave_inactive_flags(struct slave *slave,
						 bool notify)
Linus Torvalds's avatar
Linus Torvalds committed
499
{
500
	if (!bond_is_lb(slave->bond))
501
		bond_set_slave_state(slave, BOND_STATE_BACKUP, notify);
502
	if (!slave->bond->params.all_slaves_active)
503
		slave->inactive = 1;
Linus Torvalds's avatar
Linus Torvalds committed
504
505
}

506
507
static inline void bond_set_slave_active_flags(struct slave *slave,
					       bool notify)
Linus Torvalds's avatar
Linus Torvalds committed
508
{
509
	bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify);
510
511
512
513
514
515
	slave->inactive = 0;
}

static inline bool bond_is_slave_inactive(struct slave *slave)
{
	return slave->inactive;
Linus Torvalds's avatar
Linus Torvalds committed
516
517
}

518
519
520
521
522
523
static inline void bond_propose_link_state(struct slave *slave, int state)
{
	slave->link_new_state = state;
}

static inline void bond_commit_link_state(struct slave *slave, bool notify)
524
{
525
	if (slave->link == slave->link_new_state)
526
527
		return;

528
	slave->link = slave->link_new_state;
529
530
	if (notify) {
		bond_queue_slave_event(slave);
531
		bond_lower_state_changed(slave);
532
533
534
535
536
537
538
539
540
		slave->should_notify_link = 0;
	} else {
		if (slave->should_notify_link)
			slave->should_notify_link = 0;
		else
			slave->should_notify_link = 1;
	}
}

541
542
543
544
545
546
547
static inline void bond_set_slave_link_state(struct slave *slave, int state,
					     bool notify)
{
	bond_propose_link_state(slave, state);
	bond_commit_link_state(slave, notify);
}

548
549
550
551
552
553
554
555
static inline void bond_slave_link_notify(struct bonding *bond)
{
	struct list_head *iter;
	struct slave *tmp;

	bond_for_each_slave(bond, tmp, iter) {
		if (tmp->should_notify_link) {
			bond_queue_slave_event(tmp);
556
			bond_lower_state_changed(tmp);
557
558
559
			tmp->should_notify_link = 0;
		}
	}
560
561
}

562
563
564
565
566
567
568
569
570
static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local)
{
	struct in_device *in_dev;
	__be32 addr = 0;

	rcu_read_lock();
	in_dev = __in_dev_get_rcu(dev);

	if (in_dev)
571
572
		addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local,
					 RT_SCOPE_HOST);
573
574
575
576
	rcu_read_unlock();
	return addr;
}

577
578
579
580
581
582
583
584
struct bond_net {
	struct net		*net;	/* Associated network namespace */
	struct list_head	dev_list;
#ifdef CONFIG_PROC_FS
	struct proc_dir_entry	*proc_dir;
#endif
	struct class_attribute	class_attr_bonding_masters;
};
585

586
int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave);
587
void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
588
int bond_create(struct net *net, const char *name);
589
590
int bond_create_sysfs(struct bond_net *net);
void bond_destroy_sysfs(struct bond_net *net);
591
void bond_prepare_sysfs_group(struct bonding *bond);
592
593
int bond_sysfs_slave_add(struct slave *slave);
void bond_sysfs_slave_del(struct slave *slave);
594
595
int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev);
int bond_release(struct net_device *bond_dev, struct net_device *slave_dev);
596
u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb);
597
int bond_set_carrier(struct bonding *bond);
598
599
void bond_select_active_slave(struct bonding *bond);
void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
600
601
602
603
604
void bond_create_debugfs(void);
void bond_destroy_debugfs(void);
void bond_debug_register(struct bonding *bond);
void bond_debug_unregister(struct bonding *bond);
void bond_debug_reregister(struct bonding *bond);
605
const char *bond_mode_name(int mode);
606
607
608
609
void bond_setup(struct net_device *bond_dev);
unsigned int bond_get_num_tx_queues(void);
int bond_netlink_init(void);
void bond_netlink_fini(void);
610
struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);
611
const char *bond_slave_link_status(s8 link);
612
613
614
struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev,
					      struct net_device *end_dev,
					      int level);
615
616
int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave);
void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay);
617
void bond_work_init_all(struct bonding *bond);
Linus Torvalds's avatar
Linus Torvalds committed
618

619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
#ifdef CONFIG_PROC_FS
void bond_create_proc_entry(struct bonding *bond);
void bond_remove_proc_entry(struct bonding *bond);
void bond_create_proc_dir(struct bond_net *bn);
void bond_destroy_proc_dir(struct bond_net *bn);
#else
static inline void bond_create_proc_entry(struct bonding *bond)
{
}

static inline void bond_remove_proc_entry(struct bonding *bond)
{
}

static inline void bond_create_proc_dir(struct bond_net *bn)
{
}

static inline void bond_destroy_proc_dir(struct bond_net *bn)
{
}
#endif

642
643
644
static inline struct slave *bond_slave_has_mac(struct bonding *bond,
					       const u8 *mac)
{
645
	struct list_head *iter;
646
647
	struct slave *tmp;

648
	bond_for_each_slave(bond, tmp, iter)
649
650
651
652
653
		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
			return tmp;

	return NULL;
}
654

655
656
657
658
659
660
661
662
663
664
665
666
667
668
/* Caller must hold rcu_read_lock() for read */
static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond,
					       const u8 *mac)
{
	struct list_head *iter;
	struct slave *tmp;

	bond_for_each_slave_rcu(bond, tmp, iter)
		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
			return tmp;

	return NULL;
}

669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
/* Caller must hold rcu_read_lock() for read */
static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac)
{
	struct list_head *iter;
	struct slave *tmp;
	struct netdev_hw_addr *ha;

	bond_for_each_slave_rcu(bond, tmp, iter)
		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
			return true;

	if (netdev_uc_empty(bond->dev))
		return false;

	netdev_for_each_uc_addr(ha, bond->dev)
		if (ether_addr_equal_64bits(mac, ha->addr))
			return true;

	return false;
}

690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
/* Check if the ip is present in arp ip list, or first free slot if ip == 0
 * Returns -1 if not found, index if found
 */
static inline int bond_get_targets_ip(__be32 *targets, __be32 ip)
{
	int i;

	for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
		if (targets[i] == ip)
			return i;
		else if (targets[i] == 0)
			break;

	return -1;
}

706
/* exported from bond_main.c */
707
extern unsigned int bond_net_id;
708
709
710
extern const struct bond_parm_tbl bond_lacp_tbl[];
extern const struct bond_parm_tbl xmit_hashtype_tbl[];
extern const struct bond_parm_tbl arp_validate_tbl[];
711
extern const struct bond_parm_tbl arp_all_targets_tbl[];
712
extern const struct bond_parm_tbl fail_over_mac_tbl[];
713
extern const struct bond_parm_tbl pri_reselect_tbl[];
714
715
extern struct bond_parm_tbl ad_select_tbl[];

716
717
718
/* exported from bond_netlink.c */
extern struct rtnl_link_ops bond_link_ops;

719
720
721
722
723
724
static inline void bond_tx_drop(struct net_device *dev, struct sk_buff *skb)
{
	atomic_long_inc(&dev->tx_dropped);
	dev_kfree_skb_any(skb);
}

725
#endif /* _NET_BONDING_H */