Commit | Line | Data |
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1da177e4 LT |
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 | * | |
1da177e4 LT |
13 | */ |
14 | ||
1ef8019b DM |
15 | #ifndef _NET_BONDING_H |
16 | #define _NET_BONDING_H | |
1da177e4 LT |
17 | |
18 | #include <linux/timer.h> | |
19 | #include <linux/proc_fs.h> | |
20 | #include <linux/if_bonding.h> | |
e843fa50 | 21 | #include <linux/cpumask.h> |
305d552a | 22 | #include <linux/in6.h> |
8a8efa22 | 23 | #include <linux/netpoll.h> |
eaddcd76 | 24 | #include <linux/inetdevice.h> |
567b871e | 25 | #include <linux/etherdevice.h> |
809fa972 | 26 | #include <linux/reciprocal_div.h> |
5f0c5f73 | 27 | #include <linux/if_link.h> |
809fa972 | 28 | |
1ef8019b DM |
29 | #include <net/bond_3ad.h> |
30 | #include <net/bond_alb.h> | |
31 | #include <net/bond_options.h> | |
1da177e4 | 32 | |
1da177e4 LT |
33 | #define BOND_MAX_ARP_TARGETS 16 |
34 | ||
fe9d04af | 35 | #define BOND_DEFAULT_MIIMON 100 |
36 | ||
f87fda00 ED |
37 | #ifndef __long_aligned |
38 | #define __long_aligned __attribute__((aligned((sizeof(long))))) | |
39 | #endif | |
1da177e4 | 40 | |
01844098 VF |
41 | #define BOND_MODE(bond) ((bond)->params.mode) |
42 | ||
dec1e90e | 43 | /* slave list primitives */ |
5a52405a VF |
44 | #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower) |
45 | ||
46 | #define bond_has_slaves(bond) !list_empty(bond_slave_list(bond)) | |
0965a1f3 | 47 | |
dec1e90e | 48 | /* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */ |
49 | #define bond_first_slave(bond) \ | |
5a52405a VF |
50 | (bond_has_slaves(bond) ? \ |
51 | netdev_adjacent_get_private(bond_slave_list(bond)->next) : \ | |
52 | NULL) | |
dec1e90e | 53 | #define bond_last_slave(bond) \ |
5a52405a VF |
54 | (bond_has_slaves(bond) ? \ |
55 | netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \ | |
56 | NULL) | |
dec1e90e | 57 | |
e001bfad | 58 | /* Caller must have rcu_read_lock */ |
59 | #define bond_first_slave_rcu(bond) \ | |
60 | netdev_lower_get_first_private_rcu(bond->dev) | |
61 | ||
5a52405a VF |
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)) | |
dec1e90e | 64 | |
1da177e4 | 65 | /** |
dec1e90e | 66 | * bond_for_each_slave - iterate over all slaves |
67 | * @bond: the bond holding this list | |
68 | * @pos: current slave | |
9caff1e7 | 69 | * @iter: list_head * iterator |
1da177e4 | 70 | * |
87163ef9 | 71 | * Caller must hold RTNL |
1da177e4 | 72 | */ |
9caff1e7 VF |
73 | #define bond_for_each_slave(bond, pos, iter) \ |
74 | netdev_for_each_lower_private((bond)->dev, pos, iter) | |
1da177e4 | 75 | |
278b2083 | 76 | /* Caller must have rcu_read_lock */ |
9caff1e7 VF |
77 | #define bond_for_each_slave_rcu(bond, pos, iter) \ |
78 | netdev_for_each_lower_private_rcu((bond)->dev, pos, iter) | |
278b2083 | 79 | |
e843fa50 | 80 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fb4fa76a | 81 | extern atomic_t netpoll_block_tx; |
e843fa50 NH |
82 | |
83 | static inline void block_netpoll_tx(void) | |
84 | { | |
fb4fa76a | 85 | atomic_inc(&netpoll_block_tx); |
e843fa50 NH |
86 | } |
87 | ||
88 | static inline void unblock_netpoll_tx(void) | |
89 | { | |
fb4fa76a | 90 | atomic_dec(&netpoll_block_tx); |
e843fa50 NH |
91 | } |
92 | ||
93 | static inline int is_netpoll_tx_blocked(struct net_device *dev) | |
94 | { | |
080e4130 | 95 | if (unlikely(netpoll_tx_running(dev))) |
fb4fa76a | 96 | return atomic_read(&netpoll_block_tx); |
e843fa50 NH |
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 | ||
1da177e4 LT |
105 | struct bond_params { |
106 | int mode; | |
169a3e66 | 107 | int xmit_policy; |
1da177e4 | 108 | int miimon; |
ad246c99 | 109 | u8 num_peer_notif; |
1da177e4 | 110 | int arp_interval; |
f5b2b966 | 111 | int arp_validate; |
8599b52e | 112 | int arp_all_targets; |
1da177e4 | 113 | int use_carrier; |
dd957c57 | 114 | int fail_over_mac; |
1da177e4 LT |
115 | int updelay; |
116 | int downdelay; | |
117 | int lacp_fast; | |
655f8919 | 118 | unsigned int min_links; |
fd989c83 | 119 | int ad_select; |
1da177e4 | 120 | char primary[IFNAMSIZ]; |
a549952a | 121 | int primary_reselect; |
d3bb52b0 | 122 | __be32 arp_targets[BOND_MAX_ARP_TARGETS]; |
bb1d9123 | 123 | int tx_queues; |
ebd8e497 | 124 | int all_slaves_active; |
c2952c31 | 125 | int resend_igmp; |
7eacd038 | 126 | int lp_interval; |
73958329 | 127 | int packets_per_slave; |
e9f0fb88 | 128 | int tlb_dynamic_lb; |
809fa972 | 129 | struct reciprocal_value reciprocal_packets_per_slave; |
6791e466 | 130 | u16 ad_actor_sys_prio; |
d22a5fc0 | 131 | u16 ad_user_port_key; |
f87fda00 ED |
132 | |
133 | /* 2 bytes of padding : see ether_addr_equal_64bits() */ | |
134 | u8 ad_actor_system[ETH_ALEN + 2]; | |
1da177e4 LT |
135 | }; |
136 | ||
12479f9a MW |
137 | struct bond_parm_tbl { |
138 | char *modename; | |
139 | int mode; | |
140 | }; | |
141 | ||
1da177e4 | 142 | struct slave { |
e944ef79 | 143 | struct net_device *dev; /* first - useful for panic debug */ |
35d48903 | 144 | struct bonding *bond; /* our master */ |
8bb5f96b | 145 | int delay; |
8e603460 VF |
146 | /* all three in jiffies */ |
147 | unsigned long last_link_up; | |
49f17de7 | 148 | unsigned long last_rx; |
8599b52e | 149 | unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; |
f307668b MB |
150 | s8 link; /* one of BOND_LINK_XXXX */ |
151 | s8 link_new_state; /* one of BOND_LINK_XXXX */ | |
b2220cad | 152 | s8 new_link; |
2d7011ca JP |
153 | u8 backup:1, /* indicates backup slave. Value corresponds with |
154 | BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ | |
5e5b0665 | 155 | inactive:1, /* indicates inactive slave */ |
5d397061 JP |
156 | should_notify:1, /* indicates whether the state changed */ |
157 | should_notify_link:1; /* indicates whether the link changed */ | |
5d30530e | 158 | u8 duplex; |
3158bf7d | 159 | u32 original_mtu; |
1da177e4 | 160 | u32 link_failure_count; |
5d30530e | 161 | u32 speed; |
bb1d9123 | 162 | u16 queue_id; |
faeeb317 | 163 | u8 perm_hwaddr[MAX_ADDR_LEN]; |
3fdddd85 | 164 | struct ad_slave_info *ad_info; |
1da177e4 | 165 | struct tlb_slave_info tlb_info; |
8a8efa22 AW |
166 | #ifdef CONFIG_NET_POLL_CONTROLLER |
167 | struct netpoll *np; | |
168 | #endif | |
d4859d74 | 169 | struct delayed_work notify_work; |
07699f9a | 170 | struct kobject kobj; |
5f0c5f73 | 171 | struct rtnl_link_stats64 slave_stats; |
1da177e4 LT |
172 | }; |
173 | ||
ee637714 MB |
174 | struct bond_up_slave { |
175 | unsigned int count; | |
176 | struct rcu_head rcu; | |
177 | struct slave *arr[0]; | |
178 | }; | |
179 | ||
b2220cad JV |
180 | /* |
181 | * Link pseudo-state only used internally by monitors | |
182 | */ | |
183 | #define BOND_LINK_NOCHANGE -1 | |
184 | ||
1da177e4 LT |
185 | /* |
186 | * Here are the locking policies for the two bonding locks: | |
1c72cfdc | 187 | * Get rcu_read_lock when reading or RTNL when writing slave list. |
1da177e4 LT |
188 | */ |
189 | struct bonding { | |
e944ef79 | 190 | struct net_device *dev; /* first - useful for panic debug */ |
4740d638 | 191 | struct slave __rcu *curr_active_slave; |
85741718 | 192 | struct slave __rcu *current_arp_slave; |
059b47e8 | 193 | struct slave __rcu *primary_slave; |
ee637714 | 194 | struct bond_up_slave __rcu *slave_arr; /* Array of usable slaves */ |
a549952a | 195 | bool force_primary; |
21706ee8 | 196 | u32 nest_level; |
1da177e4 | 197 | s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ |
de063b70 ED |
198 | int (*recv_probe)(const struct sk_buff *, struct bonding *, |
199 | struct slave *); | |
8c0bc550 NA |
200 | /* mode_lock is used for mode-specific locking needs, currently used by: |
201 | * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and | |
547942ca NA |
202 | * bond_3ad_state_machine_handler() concurrently and also |
203 | * the access to the state machine shared variables. | |
8c0bc550 NA |
204 | * TLB mode (5) - to sync the use and modifications of its hash table |
205 | * ALB mode (6) - to sync the use and modifications of its hash table | |
206 | */ | |
b7435628 | 207 | spinlock_t mode_lock; |
fe30937b | 208 | spinlock_t stats_lock; |
ad246c99 | 209 | u8 send_peer_notif; |
4f5474e7 | 210 | u8 igmp_retrans; |
1da177e4 LT |
211 | #ifdef CONFIG_PROC_FS |
212 | struct proc_dir_entry *proc_entry; | |
213 | char proc_file_name[IFNAMSIZ]; | |
214 | #endif /* CONFIG_PROC_FS */ | |
215 | struct list_head bond_list; | |
73958329 | 216 | u32 rr_tx_counter; |
1da177e4 LT |
217 | struct ad_bond_info ad_info; |
218 | struct alb_bond_info alb_info; | |
219 | struct bond_params params; | |
1b76b316 JV |
220 | struct workqueue_struct *wq; |
221 | struct delayed_work mii_work; | |
222 | struct delayed_work arp_work; | |
223 | struct delayed_work alb_work; | |
224 | struct delayed_work ad_work; | |
5a37e8ca | 225 | struct delayed_work mcast_work; |
ee637714 | 226 | struct delayed_work slave_arr_work; |
f073c7ca | 227 | #ifdef CONFIG_DEBUG_FS |
02582e9b | 228 | /* debugging support via debugfs */ |
f073c7ca TI |
229 | struct dentry *debug_dir; |
230 | #endif /* CONFIG_DEBUG_FS */ | |
5f0c5f73 | 231 | struct rtnl_link_stats64 bond_stats; |
1da177e4 LT |
232 | }; |
233 | ||
f1c1775a JP |
234 | #define bond_slave_get_rcu(dev) \ |
235 | ((struct slave *) rcu_dereference(dev->rx_handler_data)) | |
236 | ||
471cb5a3 JP |
237 | #define bond_slave_get_rtnl(dev) \ |
238 | ((struct slave *) rtnl_dereference(dev->rx_handler_data)) | |
239 | ||
69e61133 | 240 | void bond_queue_slave_event(struct slave *slave); |
f7c7eb7f | 241 | void bond_lower_state_changed(struct slave *slave); |
69e61133 | 242 | |
fbd929f2 | 243 | struct bond_vlan_tag { |
244 | __be16 vlan_proto; | |
245 | unsigned short vlan_id; | |
246 | }; | |
247 | ||
1da177e4 LT |
248 | /** |
249 | * Returns NULL if the net_device does not belong to any of the bond's slaves | |
250 | * | |
251 | * Caller must hold bond lock for read | |
252 | */ | |
4ec952b8 | 253 | static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, |
254 | struct net_device *slave_dev) | |
1da177e4 | 255 | { |
46bb4807 | 256 | return netdev_lower_dev_get_private(bond->dev, slave_dev); |
1da177e4 LT |
257 | } |
258 | ||
cceb904f | 259 | static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) |
1da177e4 | 260 | { |
471cb5a3 | 261 | return slave->bond; |
1da177e4 LT |
262 | } |
263 | ||
d1e2e5cd VF |
264 | static inline bool bond_should_override_tx_queue(struct bonding *bond) |
265 | { | |
01844098 VF |
266 | return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || |
267 | BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; | |
d1e2e5cd VF |
268 | } |
269 | ||
58402054 HE |
270 | static inline bool bond_is_lb(const struct bonding *bond) |
271 | { | |
01844098 VF |
272 | return BOND_MODE(bond) == BOND_MODE_TLB || |
273 | BOND_MODE(bond) == BOND_MODE_ALB; | |
58402054 HE |
274 | } |
275 | ||
ad729bc9 AB |
276 | static inline bool bond_needs_speed_duplex(const struct bonding *bond) |
277 | { | |
278 | return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond); | |
279 | } | |
280 | ||
6b794c1c MB |
281 | static inline bool bond_is_nondyn_tlb(const struct bonding *bond) |
282 | { | |
e79c1055 DB |
283 | return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); |
284 | } | |
285 | ||
286 | static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) | |
287 | { | |
288 | return (BOND_MODE(bond) == BOND_MODE_8023AD || | |
289 | BOND_MODE(bond) == BOND_MODE_XOR || | |
290 | BOND_MODE(bond) == BOND_MODE_TLB || | |
291 | BOND_MODE(bond) == BOND_MODE_ALB); | |
6b794c1c MB |
292 | } |
293 | ||
d7021325 MB |
294 | static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) |
295 | { | |
296 | return (BOND_MODE(bond) == BOND_MODE_8023AD || | |
297 | BOND_MODE(bond) == BOND_MODE_XOR || | |
298 | bond_is_nondyn_tlb(bond)); | |
299 | } | |
300 | ||
267bed77 VF |
301 | static inline bool bond_mode_uses_arp(int mode) |
302 | { | |
303 | return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && | |
304 | mode != BOND_MODE_ALB; | |
305 | } | |
306 | ||
ec0865a9 VF |
307 | static inline bool bond_mode_uses_primary(int mode) |
308 | { | |
309 | return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || | |
310 | mode == BOND_MODE_ALB; | |
311 | } | |
312 | ||
313 | static inline bool bond_uses_primary(struct bonding *bond) | |
314 | { | |
01844098 | 315 | return bond_mode_uses_primary(BOND_MODE(bond)); |
ec0865a9 VF |
316 | } |
317 | ||
e9998695 MB |
318 | static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) |
319 | { | |
320 | struct slave *slave = rcu_dereference(bond->curr_active_slave); | |
321 | ||
322 | return bond_uses_primary(bond) && slave ? slave->dev : NULL; | |
323 | } | |
324 | ||
b6adc610 VF |
325 | static inline bool bond_slave_is_up(struct slave *slave) |
326 | { | |
327 | return netif_running(slave->dev) && netif_carrier_ok(slave->dev); | |
328 | } | |
329 | ||
e30bc066 JP |
330 | static inline void bond_set_active_slave(struct slave *slave) |
331 | { | |
1d3ee88a | 332 | if (slave->backup) { |
333 | slave->backup = 0; | |
69e61133 | 334 | bond_queue_slave_event(slave); |
f7c7eb7f | 335 | bond_lower_state_changed(slave); |
1d3ee88a | 336 | } |
e30bc066 JP |
337 | } |
338 | ||
339 | static inline void bond_set_backup_slave(struct slave *slave) | |
340 | { | |
1d3ee88a | 341 | if (!slave->backup) { |
342 | slave->backup = 1; | |
69e61133 | 343 | bond_queue_slave_event(slave); |
f7c7eb7f | 344 | bond_lower_state_changed(slave); |
1d3ee88a | 345 | } |
e30bc066 JP |
346 | } |
347 | ||
5e5b0665 | 348 | static inline void bond_set_slave_state(struct slave *slave, |
349 | int slave_state, bool notify) | |
350 | { | |
351 | if (slave->backup == slave_state) | |
352 | return; | |
353 | ||
354 | slave->backup = slave_state; | |
355 | if (notify) { | |
f7c7eb7f | 356 | bond_lower_state_changed(slave); |
69e61133 | 357 | bond_queue_slave_event(slave); |
5e5b0665 | 358 | slave->should_notify = 0; |
359 | } else { | |
360 | if (slave->should_notify) | |
361 | slave->should_notify = 0; | |
362 | else | |
363 | slave->should_notify = 1; | |
364 | } | |
365 | } | |
366 | ||
6fde8f03 DT |
367 | static inline void bond_slave_state_change(struct bonding *bond) |
368 | { | |
369 | struct list_head *iter; | |
370 | struct slave *tmp; | |
371 | ||
372 | bond_for_each_slave(bond, tmp, iter) { | |
373 | if (tmp->link == BOND_LINK_UP) | |
374 | bond_set_active_slave(tmp); | |
375 | else if (tmp->link == BOND_LINK_DOWN) | |
376 | bond_set_backup_slave(tmp); | |
377 | } | |
378 | } | |
379 | ||
b0929915 | 380 | static inline void bond_slave_state_notify(struct bonding *bond) |
381 | { | |
382 | struct list_head *iter; | |
383 | struct slave *tmp; | |
384 | ||
385 | bond_for_each_slave(bond, tmp, iter) { | |
386 | if (tmp->should_notify) { | |
f7c7eb7f | 387 | bond_lower_state_changed(tmp); |
b0929915 | 388 | tmp->should_notify = 0; |
389 | } | |
390 | } | |
391 | } | |
392 | ||
e30bc066 JP |
393 | static inline int bond_slave_state(struct slave *slave) |
394 | { | |
395 | return slave->backup; | |
396 | } | |
397 | ||
398 | static inline bool bond_is_active_slave(struct slave *slave) | |
399 | { | |
400 | return !bond_slave_state(slave); | |
401 | } | |
402 | ||
891ab54d VF |
403 | static inline bool bond_slave_can_tx(struct slave *slave) |
404 | { | |
405 | return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && | |
406 | bond_is_active_slave(slave); | |
407 | } | |
408 | ||
eeed992b PM |
409 | static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) |
410 | { | |
411 | struct slave *slave; | |
412 | bool active; | |
413 | ||
414 | rcu_read_lock(); | |
415 | slave = bond_slave_get_rcu(slave_dev); | |
416 | active = bond_is_active_slave(slave); | |
417 | rcu_read_unlock(); | |
418 | ||
419 | return active; | |
420 | } | |
421 | ||
faeeb317 JW |
422 | static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) |
423 | { | |
424 | if (len == ETH_ALEN) { | |
425 | ether_addr_copy(dst, src); | |
426 | return; | |
427 | } | |
428 | ||
429 | memcpy(dst, src, len); | |
430 | } | |
431 | ||
a549952a JP |
432 | #define BOND_PRI_RESELECT_ALWAYS 0 |
433 | #define BOND_PRI_RESELECT_BETTER 1 | |
434 | #define BOND_PRI_RESELECT_FAILURE 2 | |
435 | ||
3915c1e8 JV |
436 | #define BOND_FOM_NONE 0 |
437 | #define BOND_FOM_ACTIVE 1 | |
438 | #define BOND_FOM_FOLLOW 2 | |
439 | ||
8599b52e VF |
440 | #define BOND_ARP_TARGETS_ANY 0 |
441 | #define BOND_ARP_TARGETS_ALL 1 | |
442 | ||
f5b2b966 JV |
443 | #define BOND_ARP_VALIDATE_NONE 0 |
444 | #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) | |
445 | #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) | |
446 | #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ | |
447 | BOND_ARP_VALIDATE_BACKUP) | |
896149ff VF |
448 | #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) |
449 | #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ | |
450 | BOND_ARP_FILTER) | |
451 | #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ | |
452 | BOND_ARP_FILTER) | |
f5b2b966 | 453 | |
5e5b0665 | 454 | #define BOND_SLAVE_NOTIFY_NOW true |
455 | #define BOND_SLAVE_NOTIFY_LATER false | |
456 | ||
079ca7da AB |
457 | static inline int slave_do_arp_validate(struct bonding *bond, |
458 | struct slave *slave) | |
f5b2b966 | 459 | { |
e30bc066 | 460 | return bond->params.arp_validate & (1 << bond_slave_state(slave)); |
f5b2b966 JV |
461 | } |
462 | ||
bedabf90 | 463 | static inline int slave_do_arp_validate_only(struct bonding *bond) |
896149ff VF |
464 | { |
465 | return bond->params.arp_validate & BOND_ARP_FILTER; | |
466 | } | |
467 | ||
2807a9fe VF |
468 | static inline int bond_is_ip_target_ok(__be32 addr) |
469 | { | |
470 | return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); | |
471 | } | |
472 | ||
8599b52e VF |
473 | /* Get the oldest arp which we've received on this slave for bond's |
474 | * arp_targets. | |
475 | */ | |
476 | static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, | |
477 | struct slave *slave) | |
478 | { | |
479 | int i = 1; | |
480 | unsigned long ret = slave->target_last_arp_rx[0]; | |
481 | ||
482 | for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) | |
483 | if (time_before(slave->target_last_arp_rx[i], ret)) | |
484 | ret = slave->target_last_arp_rx[i]; | |
485 | ||
486 | return ret; | |
487 | } | |
488 | ||
079ca7da | 489 | static inline unsigned long slave_last_rx(struct bonding *bond, |
f8a8ccd5 | 490 | struct slave *slave) |
f5b2b966 | 491 | { |
9f242738 VF |
492 | if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) |
493 | return slave_oldest_target_arp_rx(bond, slave); | |
f5b2b966 | 494 | |
49f17de7 | 495 | return slave->last_rx; |
f5b2b966 JV |
496 | } |
497 | ||
8a8efa22 AW |
498 | #ifdef CONFIG_NET_POLL_CONTROLLER |
499 | static inline void bond_netpoll_send_skb(const struct slave *slave, | |
500 | struct sk_buff *skb) | |
501 | { | |
502 | struct netpoll *np = slave->np; | |
503 | ||
504 | if (np) | |
505 | netpoll_send_skb(np, skb); | |
506 | } | |
507 | #else | |
508 | static inline void bond_netpoll_send_skb(const struct slave *slave, | |
509 | struct sk_buff *skb) | |
510 | { | |
511 | } | |
512 | #endif | |
513 | ||
5e5b0665 | 514 | static inline void bond_set_slave_inactive_flags(struct slave *slave, |
515 | bool notify) | |
1da177e4 | 516 | { |
471cb5a3 | 517 | if (!bond_is_lb(slave->bond)) |
5e5b0665 | 518 | bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); |
471cb5a3 | 519 | if (!slave->bond->params.all_slaves_active) |
2d7011ca | 520 | slave->inactive = 1; |
1da177e4 LT |
521 | } |
522 | ||
5e5b0665 | 523 | static inline void bond_set_slave_active_flags(struct slave *slave, |
524 | bool notify) | |
1da177e4 | 525 | { |
5e5b0665 | 526 | bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); |
2d7011ca JP |
527 | slave->inactive = 0; |
528 | } | |
529 | ||
530 | static inline bool bond_is_slave_inactive(struct slave *slave) | |
531 | { | |
532 | return slave->inactive; | |
1da177e4 LT |
533 | } |
534 | ||
f307668b MB |
535 | static inline void bond_propose_link_state(struct slave *slave, int state) |
536 | { | |
537 | slave->link_new_state = state; | |
538 | } | |
539 | ||
540 | static inline void bond_commit_link_state(struct slave *slave, bool notify) | |
69a2338e | 541 | { |
f307668b | 542 | if (slave->link == slave->link_new_state) |
5d397061 JP |
543 | return; |
544 | ||
f307668b | 545 | slave->link = slave->link_new_state; |
5d397061 JP |
546 | if (notify) { |
547 | bond_queue_slave_event(slave); | |
f7c7eb7f | 548 | bond_lower_state_changed(slave); |
5d397061 JP |
549 | slave->should_notify_link = 0; |
550 | } else { | |
551 | if (slave->should_notify_link) | |
552 | slave->should_notify_link = 0; | |
553 | else | |
554 | slave->should_notify_link = 1; | |
555 | } | |
556 | } | |
557 | ||
f307668b MB |
558 | static inline void bond_set_slave_link_state(struct slave *slave, int state, |
559 | bool notify) | |
560 | { | |
561 | bond_propose_link_state(slave, state); | |
562 | bond_commit_link_state(slave, notify); | |
563 | } | |
564 | ||
5d397061 JP |
565 | static inline void bond_slave_link_notify(struct bonding *bond) |
566 | { | |
567 | struct list_head *iter; | |
568 | struct slave *tmp; | |
569 | ||
570 | bond_for_each_slave(bond, tmp, iter) { | |
571 | if (tmp->should_notify_link) { | |
572 | bond_queue_slave_event(tmp); | |
f7c7eb7f | 573 | bond_lower_state_changed(tmp); |
5d397061 JP |
574 | tmp->should_notify_link = 0; |
575 | } | |
576 | } | |
69a2338e MS |
577 | } |
578 | ||
eaddcd76 AG |
579 | static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) |
580 | { | |
581 | struct in_device *in_dev; | |
582 | __be32 addr = 0; | |
583 | ||
584 | rcu_read_lock(); | |
585 | in_dev = __in_dev_get_rcu(dev); | |
586 | ||
587 | if (in_dev) | |
b601fa19 ND |
588 | addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, |
589 | RT_SCOPE_HOST); | |
eaddcd76 AG |
590 | rcu_read_unlock(); |
591 | return addr; | |
592 | } | |
593 | ||
31924325 | 594 | struct bond_net { |
595 | struct net *net; /* Associated network namespace */ | |
596 | struct list_head dev_list; | |
597 | #ifdef CONFIG_PROC_FS | |
598 | struct proc_dir_entry *proc_dir; | |
599 | #endif | |
600 | struct class_attribute class_attr_bonding_masters; | |
601 | }; | |
4c22400a | 602 | |
5bb9e0b5 | 603 | int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); |
d316dedd | 604 | void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); |
ec87fd3b | 605 | int bond_create(struct net *net, const char *name); |
4c22400a EB |
606 | int bond_create_sysfs(struct bond_net *net); |
607 | void bond_destroy_sysfs(struct bond_net *net); | |
6151b3d4 | 608 | void bond_prepare_sysfs_group(struct bonding *bond); |
07699f9a | 609 | int bond_sysfs_slave_add(struct slave *slave); |
610 | void bond_sysfs_slave_del(struct slave *slave); | |
33eaf2a6 DA |
611 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, |
612 | struct netlink_ext_ack *extack); | |
a77b5325 | 613 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); |
ee62e868 | 614 | u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); |
2477bc9a | 615 | int bond_set_carrier(struct bonding *bond); |
a77b5325 MW |
616 | void bond_select_active_slave(struct bonding *bond); |
617 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active); | |
f073c7ca TI |
618 | void bond_create_debugfs(void); |
619 | void bond_destroy_debugfs(void); | |
620 | void bond_debug_register(struct bonding *bond); | |
621 | void bond_debug_unregister(struct bonding *bond); | |
622 | void bond_debug_reregister(struct bonding *bond); | |
d30ee670 | 623 | const char *bond_mode_name(int mode); |
0a2a78c4 JP |
624 | void bond_setup(struct net_device *bond_dev); |
625 | unsigned int bond_get_num_tx_queues(void); | |
626 | int bond_netlink_init(void); | |
627 | void bond_netlink_fini(void); | |
752d48b5 | 628 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); |
07699f9a | 629 | const char *bond_slave_link_status(s8 link); |
3e403a77 VF |
630 | struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, |
631 | struct net_device *end_dev, | |
632 | int level); | |
ee637714 MB |
633 | int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); |
634 | void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); | |
ea8ffc08 | 635 | void bond_work_init_all(struct bonding *bond); |
1da177e4 | 636 | |
bd33acc3 AW |
637 | #ifdef CONFIG_PROC_FS |
638 | void bond_create_proc_entry(struct bonding *bond); | |
639 | void bond_remove_proc_entry(struct bonding *bond); | |
640 | void bond_create_proc_dir(struct bond_net *bn); | |
641 | void bond_destroy_proc_dir(struct bond_net *bn); | |
642 | #else | |
643 | static inline void bond_create_proc_entry(struct bonding *bond) | |
644 | { | |
645 | } | |
646 | ||
647 | static inline void bond_remove_proc_entry(struct bonding *bond) | |
648 | { | |
649 | } | |
650 | ||
651 | static inline void bond_create_proc_dir(struct bond_net *bn) | |
652 | { | |
653 | } | |
654 | ||
655 | static inline void bond_destroy_proc_dir(struct bond_net *bn) | |
656 | { | |
657 | } | |
658 | #endif | |
659 | ||
567b871e | 660 | static inline struct slave *bond_slave_has_mac(struct bonding *bond, |
661 | const u8 *mac) | |
662 | { | |
9caff1e7 | 663 | struct list_head *iter; |
567b871e | 664 | struct slave *tmp; |
665 | ||
9caff1e7 | 666 | bond_for_each_slave(bond, tmp, iter) |
567b871e | 667 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) |
668 | return tmp; | |
669 | ||
670 | return NULL; | |
671 | } | |
bd33acc3 | 672 | |
28c71926 | 673 | /* Caller must hold rcu_read_lock() for read */ |
674 | static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond, | |
675 | const u8 *mac) | |
676 | { | |
677 | struct list_head *iter; | |
678 | struct slave *tmp; | |
679 | ||
680 | bond_for_each_slave_rcu(bond, tmp, iter) | |
681 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) | |
682 | return tmp; | |
683 | ||
684 | return NULL; | |
685 | } | |
686 | ||
14af9963 VY |
687 | /* Caller must hold rcu_read_lock() for read */ |
688 | static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) | |
689 | { | |
690 | struct list_head *iter; | |
691 | struct slave *tmp; | |
692 | struct netdev_hw_addr *ha; | |
693 | ||
694 | bond_for_each_slave_rcu(bond, tmp, iter) | |
695 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) | |
696 | return true; | |
697 | ||
698 | if (netdev_uc_empty(bond->dev)) | |
699 | return false; | |
700 | ||
701 | netdev_for_each_uc_addr(ha, bond->dev) | |
702 | if (ether_addr_equal_64bits(mac, ha->addr)) | |
703 | return true; | |
704 | ||
705 | return false; | |
706 | } | |
707 | ||
87a7b84b VF |
708 | /* Check if the ip is present in arp ip list, or first free slot if ip == 0 |
709 | * Returns -1 if not found, index if found | |
710 | */ | |
711 | static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) | |
712 | { | |
713 | int i; | |
714 | ||
715 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) | |
716 | if (targets[i] == ip) | |
717 | return i; | |
718 | else if (targets[i] == 0) | |
719 | break; | |
720 | ||
721 | return -1; | |
722 | } | |
723 | ||
b2259672 | 724 | /* exported from bond_main.c */ |
c7d03a00 | 725 | extern unsigned int bond_net_id; |
e97fd7c6 | 726 | extern const struct bond_parm_tbl bond_lacp_tbl[]; |
e97fd7c6 HE |
727 | extern const struct bond_parm_tbl xmit_hashtype_tbl[]; |
728 | extern const struct bond_parm_tbl arp_validate_tbl[]; | |
8599b52e | 729 | extern const struct bond_parm_tbl arp_all_targets_tbl[]; |
e97fd7c6 | 730 | extern const struct bond_parm_tbl fail_over_mac_tbl[]; |
a549952a | 731 | extern const struct bond_parm_tbl pri_reselect_tbl[]; |
b06715b7 HE |
732 | extern struct bond_parm_tbl ad_select_tbl[]; |
733 | ||
0a2a78c4 JP |
734 | /* exported from bond_netlink.c */ |
735 | extern struct rtnl_link_ops bond_link_ops; | |
736 | ||
31aa860e ED |
737 | static inline void bond_tx_drop(struct net_device *dev, struct sk_buff *skb) |
738 | { | |
739 | atomic_long_inc(&dev->tx_dropped); | |
740 | dev_kfree_skb_any(skb); | |
741 | } | |
742 | ||
1ef8019b | 743 | #endif /* _NET_BONDING_H */ |