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