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 #ifdef CONFIG_NET_POLL_CONTROLLER
93 extern atomic_t netpoll_block_tx;
94
block_netpoll_tx(void)95 static inline void block_netpoll_tx(void)
96 {
97 atomic_inc(&netpoll_block_tx);
98 }
99
unblock_netpoll_tx(void)100 static inline void unblock_netpoll_tx(void)
101 {
102 atomic_dec(&netpoll_block_tx);
103 }
104
is_netpoll_tx_blocked(struct net_device * dev)105 static inline int is_netpoll_tx_blocked(struct net_device *dev)
106 {
107 if (unlikely(netpoll_tx_running(dev)))
108 return atomic_read(&netpoll_block_tx);
109 return 0;
110 }
111 #else
112 #define block_netpoll_tx()
113 #define unblock_netpoll_tx()
114 #define is_netpoll_tx_blocked(dev) (0)
115 #endif
116
117 struct bond_params {
118 int mode;
119 int xmit_policy;
120 int miimon;
121 u8 num_peer_notif;
122 int arp_interval;
123 int arp_validate;
124 int arp_all_targets;
125 int use_carrier;
126 int fail_over_mac;
127 int updelay;
128 int downdelay;
129 int peer_notif_delay;
130 int lacp_fast;
131 unsigned int min_links;
132 int ad_select;
133 char primary[IFNAMSIZ];
134 int primary_reselect;
135 __be32 arp_targets[BOND_MAX_ARP_TARGETS];
136 int tx_queues;
137 int all_slaves_active;
138 int resend_igmp;
139 int lp_interval;
140 int packets_per_slave;
141 int tlb_dynamic_lb;
142 struct reciprocal_value reciprocal_packets_per_slave;
143 u16 ad_actor_sys_prio;
144 u16 ad_user_port_key;
145
146 /* 2 bytes of padding : see ether_addr_equal_64bits() */
147 u8 ad_actor_system[ETH_ALEN + 2];
148 };
149
150 struct bond_parm_tbl {
151 char *modename;
152 int mode;
153 };
154
155 struct slave {
156 struct net_device *dev; /* first - useful for panic debug */
157 struct bonding *bond; /* our master */
158 int delay;
159 /* all three in jiffies */
160 unsigned long last_link_up;
161 unsigned long last_rx;
162 unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS];
163 s8 link; /* one of BOND_LINK_XXXX */
164 s8 link_new_state; /* one of BOND_LINK_XXXX */
165 u8 backup:1, /* indicates backup slave. Value corresponds with
166 BOND_STATE_ACTIVE and BOND_STATE_BACKUP */
167 inactive:1, /* indicates inactive slave */
168 should_notify:1, /* indicates whether the state changed */
169 should_notify_link:1; /* indicates whether the link changed */
170 u8 duplex;
171 u32 original_mtu;
172 u32 link_failure_count;
173 u32 speed;
174 u16 queue_id;
175 u8 perm_hwaddr[MAX_ADDR_LEN];
176 struct ad_slave_info *ad_info;
177 struct tlb_slave_info tlb_info;
178 #ifdef CONFIG_NET_POLL_CONTROLLER
179 struct netpoll *np;
180 #endif
181 struct delayed_work notify_work;
182 struct kobject kobj;
183 struct rtnl_link_stats64 slave_stats;
184 };
185
to_slave(struct kobject * kobj)186 static inline struct slave *to_slave(struct kobject *kobj)
187 {
188 return container_of(kobj, struct slave, kobj);
189 }
190
191 struct bond_up_slave {
192 unsigned int count;
193 struct rcu_head rcu;
194 struct slave *arr[];
195 };
196
197 /*
198 * Link pseudo-state only used internally by monitors
199 */
200 #define BOND_LINK_NOCHANGE -1
201
202 struct bond_ipsec {
203 struct list_head list;
204 struct xfrm_state *xs;
205 };
206
207 /*
208 * Here are the locking policies for the two bonding locks:
209 * Get rcu_read_lock when reading or RTNL when writing slave list.
210 */
211 struct bonding {
212 struct net_device *dev; /* first - useful for panic debug */
213 struct slave __rcu *curr_active_slave;
214 struct slave __rcu *current_arp_slave;
215 struct slave __rcu *primary_slave;
216 struct bond_up_slave __rcu *usable_slaves;
217 struct bond_up_slave __rcu *all_slaves;
218 bool force_primary;
219 bool notifier_ctx;
220 s32 slave_cnt; /* never change this value outside the attach/detach wrappers */
221 int (*recv_probe)(const struct sk_buff *, struct bonding *,
222 struct slave *);
223 /* mode_lock is used for mode-specific locking needs, currently used by:
224 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and
225 * bond_3ad_state_machine_handler() concurrently and also
226 * the access to the state machine shared variables.
227 * TLB mode (5) - to sync the use and modifications of its hash table
228 * ALB mode (6) - to sync the use and modifications of its hash table
229 */
230 spinlock_t mode_lock;
231 spinlock_t stats_lock;
232 u8 send_peer_notif;
233 u8 igmp_retrans;
234 #ifdef CONFIG_PROC_FS
235 struct proc_dir_entry *proc_entry;
236 char proc_file_name[IFNAMSIZ];
237 #endif /* CONFIG_PROC_FS */
238 struct list_head bond_list;
239 u32 rr_tx_counter;
240 struct ad_bond_info ad_info;
241 struct alb_bond_info alb_info;
242 struct bond_params params;
243 struct workqueue_struct *wq;
244 struct delayed_work mii_work;
245 struct delayed_work arp_work;
246 struct delayed_work alb_work;
247 struct delayed_work ad_work;
248 struct delayed_work mcast_work;
249 struct delayed_work slave_arr_work;
250 #ifdef CONFIG_DEBUG_FS
251 /* debugging support via debugfs */
252 struct dentry *debug_dir;
253 #endif /* CONFIG_DEBUG_FS */
254 struct rtnl_link_stats64 bond_stats;
255 #ifdef CONFIG_XFRM_OFFLOAD
256 struct list_head ipsec_list;
257 /* protecting ipsec_list */
258 spinlock_t ipsec_lock;
259 #endif /* CONFIG_XFRM_OFFLOAD */
260 };
261
262 #define bond_slave_get_rcu(dev) \
263 ((struct slave *) rcu_dereference(dev->rx_handler_data))
264
265 #define bond_slave_get_rtnl(dev) \
266 ((struct slave *) rtnl_dereference(dev->rx_handler_data))
267
268 void bond_queue_slave_event(struct slave *slave);
269 void bond_lower_state_changed(struct slave *slave);
270
271 struct bond_vlan_tag {
272 __be16 vlan_proto;
273 unsigned short vlan_id;
274 };
275
276 /**
277 * Returns NULL if the net_device does not belong to any of the bond's slaves
278 *
279 * Caller must hold bond lock for read
280 */
bond_get_slave_by_dev(struct bonding * bond,struct net_device * slave_dev)281 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond,
282 struct net_device *slave_dev)
283 {
284 return netdev_lower_dev_get_private(bond->dev, slave_dev);
285 }
286
bond_get_bond_by_slave(struct slave * slave)287 static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
288 {
289 return slave->bond;
290 }
291
bond_should_override_tx_queue(struct bonding * bond)292 static inline bool bond_should_override_tx_queue(struct bonding *bond)
293 {
294 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP ||
295 BOND_MODE(bond) == BOND_MODE_ROUNDROBIN;
296 }
297
bond_is_lb(const struct bonding * bond)298 static inline bool bond_is_lb(const struct bonding *bond)
299 {
300 return BOND_MODE(bond) == BOND_MODE_TLB ||
301 BOND_MODE(bond) == BOND_MODE_ALB;
302 }
303
bond_needs_speed_duplex(const struct bonding * bond)304 static inline bool bond_needs_speed_duplex(const struct bonding *bond)
305 {
306 return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond);
307 }
308
bond_is_nondyn_tlb(const struct bonding * bond)309 static inline bool bond_is_nondyn_tlb(const struct bonding *bond)
310 {
311 return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0);
312 }
313
bond_mode_can_use_xmit_hash(const struct bonding * bond)314 static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond)
315 {
316 return (BOND_MODE(bond) == BOND_MODE_8023AD ||
317 BOND_MODE(bond) == BOND_MODE_XOR ||
318 BOND_MODE(bond) == BOND_MODE_TLB ||
319 BOND_MODE(bond) == BOND_MODE_ALB);
320 }
321
bond_mode_uses_xmit_hash(const struct bonding * bond)322 static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond)
323 {
324 return (BOND_MODE(bond) == BOND_MODE_8023AD ||
325 BOND_MODE(bond) == BOND_MODE_XOR ||
326 bond_is_nondyn_tlb(bond));
327 }
328
bond_mode_uses_arp(int mode)329 static inline bool bond_mode_uses_arp(int mode)
330 {
331 return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB &&
332 mode != BOND_MODE_ALB;
333 }
334
bond_mode_uses_primary(int mode)335 static inline bool bond_mode_uses_primary(int mode)
336 {
337 return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB ||
338 mode == BOND_MODE_ALB;
339 }
340
bond_uses_primary(struct bonding * bond)341 static inline bool bond_uses_primary(struct bonding *bond)
342 {
343 return bond_mode_uses_primary(BOND_MODE(bond));
344 }
345
bond_option_active_slave_get_rcu(struct bonding * bond)346 static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
347 {
348 struct slave *slave = rcu_dereference(bond->curr_active_slave);
349
350 return bond_uses_primary(bond) && slave ? slave->dev : NULL;
351 }
352
bond_slave_is_up(struct slave * slave)353 static inline bool bond_slave_is_up(struct slave *slave)
354 {
355 return netif_running(slave->dev) && netif_carrier_ok(slave->dev);
356 }
357
bond_set_active_slave(struct slave * slave)358 static inline void bond_set_active_slave(struct slave *slave)
359 {
360 if (slave->backup) {
361 slave->backup = 0;
362 bond_queue_slave_event(slave);
363 bond_lower_state_changed(slave);
364 }
365 }
366
bond_set_backup_slave(struct slave * slave)367 static inline void bond_set_backup_slave(struct slave *slave)
368 {
369 if (!slave->backup) {
370 slave->backup = 1;
371 bond_queue_slave_event(slave);
372 bond_lower_state_changed(slave);
373 }
374 }
375
bond_set_slave_state(struct slave * slave,int slave_state,bool notify)376 static inline void bond_set_slave_state(struct slave *slave,
377 int slave_state, bool notify)
378 {
379 if (slave->backup == slave_state)
380 return;
381
382 slave->backup = slave_state;
383 if (notify) {
384 bond_lower_state_changed(slave);
385 bond_queue_slave_event(slave);
386 slave->should_notify = 0;
387 } else {
388 if (slave->should_notify)
389 slave->should_notify = 0;
390 else
391 slave->should_notify = 1;
392 }
393 }
394
bond_slave_state_change(struct bonding * bond)395 static inline void bond_slave_state_change(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->link == BOND_LINK_UP)
402 bond_set_active_slave(tmp);
403 else if (tmp->link == BOND_LINK_DOWN)
404 bond_set_backup_slave(tmp);
405 }
406 }
407
bond_slave_state_notify(struct bonding * bond)408 static inline void bond_slave_state_notify(struct bonding *bond)
409 {
410 struct list_head *iter;
411 struct slave *tmp;
412
413 bond_for_each_slave(bond, tmp, iter) {
414 if (tmp->should_notify) {
415 bond_lower_state_changed(tmp);
416 tmp->should_notify = 0;
417 }
418 }
419 }
420
bond_slave_state(struct slave * slave)421 static inline int bond_slave_state(struct slave *slave)
422 {
423 return slave->backup;
424 }
425
bond_is_active_slave(struct slave * slave)426 static inline bool bond_is_active_slave(struct slave *slave)
427 {
428 return !bond_slave_state(slave);
429 }
430
bond_slave_can_tx(struct slave * slave)431 static inline bool bond_slave_can_tx(struct slave *slave)
432 {
433 return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP &&
434 bond_is_active_slave(slave);
435 }
436
bond_is_active_slave_dev(const struct net_device * slave_dev)437 static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev)
438 {
439 struct slave *slave;
440 bool active;
441
442 rcu_read_lock();
443 slave = bond_slave_get_rcu(slave_dev);
444 active = bond_is_active_slave(slave);
445 rcu_read_unlock();
446
447 return active;
448 }
449
bond_hw_addr_copy(u8 * dst,const u8 * src,unsigned int len)450 static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len)
451 {
452 if (len == ETH_ALEN) {
453 ether_addr_copy(dst, src);
454 return;
455 }
456
457 memcpy(dst, src, len);
458 }
459
460 #define BOND_PRI_RESELECT_ALWAYS 0
461 #define BOND_PRI_RESELECT_BETTER 1
462 #define BOND_PRI_RESELECT_FAILURE 2
463
464 #define BOND_FOM_NONE 0
465 #define BOND_FOM_ACTIVE 1
466 #define BOND_FOM_FOLLOW 2
467
468 #define BOND_ARP_TARGETS_ANY 0
469 #define BOND_ARP_TARGETS_ALL 1
470
471 #define BOND_ARP_VALIDATE_NONE 0
472 #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE)
473 #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP)
474 #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \
475 BOND_ARP_VALIDATE_BACKUP)
476 #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1)
477 #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \
478 BOND_ARP_FILTER)
479 #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \
480 BOND_ARP_FILTER)
481
482 #define BOND_SLAVE_NOTIFY_NOW true
483 #define BOND_SLAVE_NOTIFY_LATER false
484
slave_do_arp_validate(struct bonding * bond,struct slave * slave)485 static inline int slave_do_arp_validate(struct bonding *bond,
486 struct slave *slave)
487 {
488 return bond->params.arp_validate & (1 << bond_slave_state(slave));
489 }
490
slave_do_arp_validate_only(struct bonding * bond)491 static inline int slave_do_arp_validate_only(struct bonding *bond)
492 {
493 return bond->params.arp_validate & BOND_ARP_FILTER;
494 }
495
bond_is_ip_target_ok(__be32 addr)496 static inline int bond_is_ip_target_ok(__be32 addr)
497 {
498 return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr);
499 }
500
501 /* Get the oldest arp which we've received on this slave for bond's
502 * arp_targets.
503 */
slave_oldest_target_arp_rx(struct bonding * bond,struct slave * slave)504 static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond,
505 struct slave *slave)
506 {
507 int i = 1;
508 unsigned long ret = slave->target_last_arp_rx[0];
509
510 for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++)
511 if (time_before(slave->target_last_arp_rx[i], ret))
512 ret = slave->target_last_arp_rx[i];
513
514 return ret;
515 }
516
slave_last_rx(struct bonding * bond,struct slave * slave)517 static inline unsigned long slave_last_rx(struct bonding *bond,
518 struct slave *slave)
519 {
520 if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL)
521 return slave_oldest_target_arp_rx(bond, slave);
522
523 return slave->last_rx;
524 }
525
526 #ifdef CONFIG_NET_POLL_CONTROLLER
bond_netpoll_send_skb(const struct slave * slave,struct sk_buff * skb)527 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave,
528 struct sk_buff *skb)
529 {
530 return netpoll_send_skb(slave->np, skb);
531 }
532 #else
bond_netpoll_send_skb(const struct slave * slave,struct sk_buff * skb)533 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave,
534 struct sk_buff *skb)
535 {
536 BUG();
537 return NETDEV_TX_OK;
538 }
539 #endif
540
bond_set_slave_inactive_flags(struct slave * slave,bool notify)541 static inline void bond_set_slave_inactive_flags(struct slave *slave,
542 bool notify)
543 {
544 if (!bond_is_lb(slave->bond))
545 bond_set_slave_state(slave, BOND_STATE_BACKUP, notify);
546 if (!slave->bond->params.all_slaves_active)
547 slave->inactive = 1;
548 }
549
bond_set_slave_active_flags(struct slave * slave,bool notify)550 static inline void bond_set_slave_active_flags(struct slave *slave,
551 bool notify)
552 {
553 bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify);
554 slave->inactive = 0;
555 }
556
bond_is_slave_inactive(struct slave * slave)557 static inline bool bond_is_slave_inactive(struct slave *slave)
558 {
559 return slave->inactive;
560 }
561
bond_propose_link_state(struct slave * slave,int state)562 static inline void bond_propose_link_state(struct slave *slave, int state)
563 {
564 slave->link_new_state = state;
565 }
566
bond_commit_link_state(struct slave * slave,bool notify)567 static inline void bond_commit_link_state(struct slave *slave, bool notify)
568 {
569 if (slave->link_new_state == BOND_LINK_NOCHANGE)
570 return;
571
572 slave->link = slave->link_new_state;
573 if (notify) {
574 bond_queue_slave_event(slave);
575 bond_lower_state_changed(slave);
576 slave->should_notify_link = 0;
577 } else {
578 if (slave->should_notify_link)
579 slave->should_notify_link = 0;
580 else
581 slave->should_notify_link = 1;
582 }
583 }
584
bond_set_slave_link_state(struct slave * slave,int state,bool notify)585 static inline void bond_set_slave_link_state(struct slave *slave, int state,
586 bool notify)
587 {
588 bond_propose_link_state(slave, state);
589 bond_commit_link_state(slave, notify);
590 }
591
bond_slave_link_notify(struct bonding * bond)592 static inline void bond_slave_link_notify(struct bonding *bond)
593 {
594 struct list_head *iter;
595 struct slave *tmp;
596
597 bond_for_each_slave(bond, tmp, iter) {
598 if (tmp->should_notify_link) {
599 bond_queue_slave_event(tmp);
600 bond_lower_state_changed(tmp);
601 tmp->should_notify_link = 0;
602 }
603 }
604 }
605
bond_confirm_addr(struct net_device * dev,__be32 dst,__be32 local)606 static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local)
607 {
608 struct in_device *in_dev;
609 __be32 addr = 0;
610
611 rcu_read_lock();
612 in_dev = __in_dev_get_rcu(dev);
613
614 if (in_dev)
615 addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local,
616 RT_SCOPE_HOST);
617 rcu_read_unlock();
618 return addr;
619 }
620
621 struct bond_net {
622 struct net *net; /* Associated network namespace */
623 struct list_head dev_list;
624 #ifdef CONFIG_PROC_FS
625 struct proc_dir_entry *proc_dir;
626 #endif
627 struct class_attribute class_attr_bonding_masters;
628 };
629
630 int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave);
631 netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
632 int bond_create(struct net *net, const char *name);
633 int bond_create_sysfs(struct bond_net *net);
634 void bond_destroy_sysfs(struct bond_net *net);
635 void bond_prepare_sysfs_group(struct bonding *bond);
636 int bond_sysfs_slave_add(struct slave *slave);
637 void bond_sysfs_slave_del(struct slave *slave);
638 int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev,
639 struct netlink_ext_ack *extack);
640 int bond_release(struct net_device *bond_dev, struct net_device *slave_dev);
641 u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb);
642 int bond_set_carrier(struct bonding *bond);
643 void bond_select_active_slave(struct bonding *bond);
644 void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
645 void bond_create_debugfs(void);
646 void bond_destroy_debugfs(void);
647 void bond_debug_register(struct bonding *bond);
648 void bond_debug_unregister(struct bonding *bond);
649 void bond_debug_reregister(struct bonding *bond);
650 const char *bond_mode_name(int mode);
651 void bond_setup(struct net_device *bond_dev);
652 unsigned int bond_get_num_tx_queues(void);
653 int bond_netlink_init(void);
654 void bond_netlink_fini(void);
655 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);
656 const char *bond_slave_link_status(s8 link);
657 struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev,
658 struct net_device *end_dev,
659 int level);
660 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave);
661 void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay);
662 void bond_work_init_all(struct bonding *bond);
663
664 #ifdef CONFIG_PROC_FS
665 void bond_create_proc_entry(struct bonding *bond);
666 void bond_remove_proc_entry(struct bonding *bond);
667 void bond_create_proc_dir(struct bond_net *bn);
668 void bond_destroy_proc_dir(struct bond_net *bn);
669 #else
bond_create_proc_entry(struct bonding * bond)670 static inline void bond_create_proc_entry(struct bonding *bond)
671 {
672 }
673
bond_remove_proc_entry(struct bonding * bond)674 static inline void bond_remove_proc_entry(struct bonding *bond)
675 {
676 }
677
bond_create_proc_dir(struct bond_net * bn)678 static inline void bond_create_proc_dir(struct bond_net *bn)
679 {
680 }
681
bond_destroy_proc_dir(struct bond_net * bn)682 static inline void bond_destroy_proc_dir(struct bond_net *bn)
683 {
684 }
685 #endif
686
bond_slave_has_mac(struct bonding * bond,const u8 * mac)687 static inline struct slave *bond_slave_has_mac(struct bonding *bond,
688 const u8 *mac)
689 {
690 struct list_head *iter;
691 struct slave *tmp;
692
693 bond_for_each_slave(bond, tmp, iter)
694 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
695 return tmp;
696
697 return NULL;
698 }
699
700 /* Caller must hold rcu_read_lock() for read */
bond_slave_has_mac_rcu(struct bonding * bond,const u8 * mac)701 static inline bool bond_slave_has_mac_rcu(struct bonding *bond, const u8 *mac)
702 {
703 struct list_head *iter;
704 struct slave *tmp;
705
706 bond_for_each_slave_rcu(bond, tmp, iter)
707 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
708 return true;
709 return false;
710 }
711
712 /* Check if the ip is present in arp ip list, or first free slot if ip == 0
713 * Returns -1 if not found, index if found
714 */
bond_get_targets_ip(__be32 * targets,__be32 ip)715 static inline int bond_get_targets_ip(__be32 *targets, __be32 ip)
716 {
717 int i;
718
719 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
720 if (targets[i] == ip)
721 return i;
722 else if (targets[i] == 0)
723 break;
724
725 return -1;
726 }
727
728 /* exported from bond_main.c */
729 extern unsigned int bond_net_id;
730 extern const struct bond_parm_tbl bond_lacp_tbl[];
731 extern const struct bond_parm_tbl xmit_hashtype_tbl[];
732 extern const struct bond_parm_tbl arp_validate_tbl[];
733 extern const struct bond_parm_tbl arp_all_targets_tbl[];
734 extern const struct bond_parm_tbl fail_over_mac_tbl[];
735 extern const struct bond_parm_tbl pri_reselect_tbl[];
736 extern struct bond_parm_tbl ad_select_tbl[];
737
738 /* exported from bond_netlink.c */
739 extern struct rtnl_link_ops bond_link_ops;
740
741 /* exported from bond_sysfs_slave.c */
742 extern const struct sysfs_ops slave_sysfs_ops;
743
744 /* exported from bond_3ad.c */
745 extern const u8 lacpdu_mcast_addr[];
746
bond_tx_drop(struct net_device * dev,struct sk_buff * skb)747 static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb)
748 {
749 atomic_long_inc(&dev->tx_dropped);
750 dev_kfree_skb_any(skb);
751 return NET_XMIT_DROP;
752 }
753
754 #endif /* _NET_BONDING_H */
755