Commit | Line | Data |
---|---|---|
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 | ||
15 | #ifndef _LINUX_BONDING_H | |
16 | #define _LINUX_BONDING_H | |
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 HFS |
26 | #include <linux/reciprocal_div.h> |
27 | ||
1da177e4 LT |
28 | #include "bond_3ad.h" |
29 | #include "bond_alb.h" | |
09117362 | 30 | #include "bond_options.h" |
1da177e4 | 31 | |
ad246c99 BH |
32 | #define DRV_VERSION "3.7.1" |
33 | #define DRV_RELDATE "April 27, 2011" | |
1da177e4 LT |
34 | #define DRV_NAME "bonding" |
35 | #define DRV_DESCRIPTION "Ethernet Channel Bonding Driver" | |
36 | ||
bd33acc3 AW |
37 | #define bond_version DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n" |
38 | ||
1da177e4 LT |
39 | #define BOND_MAX_ARP_TARGETS 16 |
40 | ||
fe9d04af | 41 | #define BOND_DEFAULT_MIIMON 100 |
42 | ||
1da177e4 LT |
43 | /* |
44 | * Less bad way to call ioctl from within the kernel; this needs to be | |
45 | * done some other way to get the call out of interrupt context. | |
46 | * Needs "ioctl" variable to be supplied by calling context. | |
47 | */ | |
48 | #define IOCTL(dev, arg, cmd) ({ \ | |
49 | int res = 0; \ | |
50 | mm_segment_t fs = get_fs(); \ | |
51 | set_fs(get_ds()); \ | |
52 | res = ioctl(dev, arg, cmd); \ | |
53 | set_fs(fs); \ | |
54 | res; }) | |
55 | ||
01844098 VF |
56 | #define BOND_MODE(bond) ((bond)->params.mode) |
57 | ||
dec1e90e | 58 | /* slave list primitives */ |
5a52405a VF |
59 | #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower) |
60 | ||
61 | #define bond_has_slaves(bond) !list_empty(bond_slave_list(bond)) | |
0965a1f3 | 62 | |
dec1e90e | 63 | /* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */ |
64 | #define bond_first_slave(bond) \ | |
5a52405a VF |
65 | (bond_has_slaves(bond) ? \ |
66 | netdev_adjacent_get_private(bond_slave_list(bond)->next) : \ | |
67 | NULL) | |
dec1e90e | 68 | #define bond_last_slave(bond) \ |
5a52405a VF |
69 | (bond_has_slaves(bond) ? \ |
70 | netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \ | |
71 | NULL) | |
dec1e90e | 72 | |
e001bfad | 73 | /* Caller must have rcu_read_lock */ |
74 | #define bond_first_slave_rcu(bond) \ | |
75 | netdev_lower_get_first_private_rcu(bond->dev) | |
76 | ||
5a52405a VF |
77 | #define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond)) |
78 | #define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond)) | |
dec1e90e | 79 | |
1da177e4 | 80 | /** |
dec1e90e | 81 | * bond_for_each_slave - iterate over all slaves |
82 | * @bond: the bond holding this list | |
83 | * @pos: current slave | |
9caff1e7 | 84 | * @iter: list_head * iterator |
1da177e4 LT |
85 | * |
86 | * Caller must hold bond->lock | |
87 | */ | |
9caff1e7 VF |
88 | #define bond_for_each_slave(bond, pos, iter) \ |
89 | netdev_for_each_lower_private((bond)->dev, pos, iter) | |
1da177e4 | 90 | |
278b2083 | 91 | /* Caller must have rcu_read_lock */ |
9caff1e7 VF |
92 | #define bond_for_each_slave_rcu(bond, pos, iter) \ |
93 | netdev_for_each_lower_private_rcu((bond)->dev, pos, iter) | |
278b2083 | 94 | |
e843fa50 | 95 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fb4fa76a | 96 | extern atomic_t netpoll_block_tx; |
e843fa50 NH |
97 | |
98 | static inline void block_netpoll_tx(void) | |
99 | { | |
fb4fa76a | 100 | atomic_inc(&netpoll_block_tx); |
e843fa50 NH |
101 | } |
102 | ||
103 | static inline void unblock_netpoll_tx(void) | |
104 | { | |
fb4fa76a | 105 | atomic_dec(&netpoll_block_tx); |
e843fa50 NH |
106 | } |
107 | ||
108 | static inline int is_netpoll_tx_blocked(struct net_device *dev) | |
109 | { | |
080e4130 | 110 | if (unlikely(netpoll_tx_running(dev))) |
fb4fa76a | 111 | return atomic_read(&netpoll_block_tx); |
e843fa50 NH |
112 | return 0; |
113 | } | |
114 | #else | |
115 | #define block_netpoll_tx() | |
116 | #define unblock_netpoll_tx() | |
117 | #define is_netpoll_tx_blocked(dev) (0) | |
118 | #endif | |
119 | ||
1da177e4 LT |
120 | struct bond_params { |
121 | int mode; | |
169a3e66 | 122 | int xmit_policy; |
1da177e4 | 123 | int miimon; |
ad246c99 | 124 | u8 num_peer_notif; |
1da177e4 | 125 | int arp_interval; |
f5b2b966 | 126 | int arp_validate; |
8599b52e | 127 | int arp_all_targets; |
1da177e4 | 128 | int use_carrier; |
dd957c57 | 129 | int fail_over_mac; |
1da177e4 LT |
130 | int updelay; |
131 | int downdelay; | |
132 | int lacp_fast; | |
655f8919 | 133 | unsigned int min_links; |
fd989c83 | 134 | int ad_select; |
1da177e4 | 135 | char primary[IFNAMSIZ]; |
a549952a | 136 | int primary_reselect; |
d3bb52b0 | 137 | __be32 arp_targets[BOND_MAX_ARP_TARGETS]; |
bb1d9123 | 138 | int tx_queues; |
ebd8e497 | 139 | int all_slaves_active; |
c2952c31 | 140 | int resend_igmp; |
7eacd038 | 141 | int lp_interval; |
73958329 | 142 | int packets_per_slave; |
e9f0fb88 | 143 | int tlb_dynamic_lb; |
809fa972 | 144 | struct reciprocal_value reciprocal_packets_per_slave; |
1da177e4 LT |
145 | }; |
146 | ||
12479f9a MW |
147 | struct bond_parm_tbl { |
148 | char *modename; | |
149 | int mode; | |
150 | }; | |
151 | ||
1da177e4 | 152 | struct slave { |
e944ef79 | 153 | struct net_device *dev; /* first - useful for panic debug */ |
35d48903 | 154 | struct bonding *bond; /* our master */ |
8bb5f96b | 155 | int delay; |
8e603460 VF |
156 | /* all three in jiffies */ |
157 | unsigned long last_link_up; | |
49f17de7 | 158 | unsigned long last_rx; |
8599b52e | 159 | unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; |
1da177e4 | 160 | s8 link; /* one of BOND_LINK_XXXX */ |
b2220cad | 161 | s8 new_link; |
2d7011ca JP |
162 | u8 backup:1, /* indicates backup slave. Value corresponds with |
163 | BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ | |
5e5b0665 | 164 | inactive:1, /* indicates inactive slave */ |
165 | should_notify:1; /* indicateds whether the state changed */ | |
5d30530e | 166 | u8 duplex; |
3158bf7d | 167 | u32 original_mtu; |
1da177e4 | 168 | u32 link_failure_count; |
5d30530e | 169 | u32 speed; |
bb1d9123 | 170 | u16 queue_id; |
5d30530e | 171 | u8 perm_hwaddr[ETH_ALEN]; |
3fdddd85 | 172 | struct ad_slave_info *ad_info; |
1da177e4 | 173 | struct tlb_slave_info tlb_info; |
8a8efa22 AW |
174 | #ifdef CONFIG_NET_POLL_CONTROLLER |
175 | struct netpoll *np; | |
176 | #endif | |
07699f9a | 177 | struct kobject kobj; |
1da177e4 LT |
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: | |
187 | * | |
188 | * 1) Get bond->lock when reading/writing slave list. | |
189 | * 2) Get bond->curr_slave_lock when reading/writing bond->curr_active_slave. | |
190 | * (It is unnecessary when the write-lock is put with bond->lock.) | |
191 | * 3) When we lock with bond->curr_slave_lock, we must lock with bond->lock | |
192 | * beforehand. | |
193 | */ | |
194 | struct bonding { | |
e944ef79 | 195 | struct net_device *dev; /* first - useful for panic debug */ |
4740d638 | 196 | struct slave __rcu *curr_active_slave; |
85741718 | 197 | struct slave __rcu *current_arp_slave; |
1da177e4 | 198 | struct slave *primary_slave; |
a549952a | 199 | bool force_primary; |
1da177e4 | 200 | s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ |
de063b70 ED |
201 | int (*recv_probe)(const struct sk_buff *, struct bonding *, |
202 | struct slave *); | |
1da177e4 LT |
203 | rwlock_t lock; |
204 | rwlock_t curr_slave_lock; | |
ad246c99 | 205 | u8 send_peer_notif; |
4f5474e7 | 206 | u8 igmp_retrans; |
1da177e4 LT |
207 | #ifdef CONFIG_PROC_FS |
208 | struct proc_dir_entry *proc_entry; | |
209 | char proc_file_name[IFNAMSIZ]; | |
210 | #endif /* CONFIG_PROC_FS */ | |
211 | struct list_head bond_list; | |
73958329 | 212 | u32 rr_tx_counter; |
1da177e4 LT |
213 | struct ad_bond_info ad_info; |
214 | struct alb_bond_info alb_info; | |
215 | struct bond_params params; | |
1b76b316 JV |
216 | struct workqueue_struct *wq; |
217 | struct delayed_work mii_work; | |
218 | struct delayed_work arp_work; | |
219 | struct delayed_work alb_work; | |
220 | struct delayed_work ad_work; | |
5a37e8ca | 221 | struct delayed_work mcast_work; |
f073c7ca | 222 | #ifdef CONFIG_DEBUG_FS |
02582e9b | 223 | /* debugging support via debugfs */ |
f073c7ca TI |
224 | struct dentry *debug_dir; |
225 | #endif /* CONFIG_DEBUG_FS */ | |
1da177e4 LT |
226 | }; |
227 | ||
f1c1775a JP |
228 | #define bond_slave_get_rcu(dev) \ |
229 | ((struct slave *) rcu_dereference(dev->rx_handler_data)) | |
230 | ||
471cb5a3 JP |
231 | #define bond_slave_get_rtnl(dev) \ |
232 | ((struct slave *) rtnl_dereference(dev->rx_handler_data)) | |
233 | ||
4740d638 ED |
234 | #define bond_deref_active_protected(bond) \ |
235 | rcu_dereference_protected(bond->curr_active_slave, \ | |
236 | lockdep_is_held(&bond->curr_slave_lock)) | |
237 | ||
fbd929f2 | 238 | struct bond_vlan_tag { |
239 | __be16 vlan_proto; | |
240 | unsigned short vlan_id; | |
241 | }; | |
242 | ||
1da177e4 LT |
243 | /** |
244 | * Returns NULL if the net_device does not belong to any of the bond's slaves | |
245 | * | |
246 | * Caller must hold bond lock for read | |
247 | */ | |
4ec952b8 | 248 | static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, |
249 | struct net_device *slave_dev) | |
1da177e4 | 250 | { |
46bb4807 | 251 | return netdev_lower_dev_get_private(bond->dev, slave_dev); |
1da177e4 LT |
252 | } |
253 | ||
cceb904f | 254 | static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) |
1da177e4 | 255 | { |
471cb5a3 | 256 | return slave->bond; |
1da177e4 LT |
257 | } |
258 | ||
d1e2e5cd VF |
259 | static inline bool bond_should_override_tx_queue(struct bonding *bond) |
260 | { | |
01844098 VF |
261 | return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || |
262 | BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; | |
d1e2e5cd VF |
263 | } |
264 | ||
58402054 HE |
265 | static inline bool bond_is_lb(const struct bonding *bond) |
266 | { | |
01844098 VF |
267 | return BOND_MODE(bond) == BOND_MODE_TLB || |
268 | BOND_MODE(bond) == BOND_MODE_ALB; | |
58402054 HE |
269 | } |
270 | ||
6b794c1c MB |
271 | static inline bool bond_is_nondyn_tlb(const struct bonding *bond) |
272 | { | |
273 | return (BOND_MODE(bond) == BOND_MODE_TLB) && | |
274 | (bond->params.tlb_dynamic_lb == 0); | |
275 | } | |
276 | ||
267bed77 VF |
277 | static inline bool bond_mode_uses_arp(int mode) |
278 | { | |
279 | return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && | |
280 | mode != BOND_MODE_ALB; | |
281 | } | |
282 | ||
ec0865a9 VF |
283 | static inline bool bond_mode_uses_primary(int mode) |
284 | { | |
285 | return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || | |
286 | mode == BOND_MODE_ALB; | |
287 | } | |
288 | ||
289 | static inline bool bond_uses_primary(struct bonding *bond) | |
290 | { | |
01844098 | 291 | return bond_mode_uses_primary(BOND_MODE(bond)); |
ec0865a9 VF |
292 | } |
293 | ||
b6adc610 VF |
294 | static inline bool bond_slave_is_up(struct slave *slave) |
295 | { | |
296 | return netif_running(slave->dev) && netif_carrier_ok(slave->dev); | |
297 | } | |
298 | ||
e30bc066 JP |
299 | static inline void bond_set_active_slave(struct slave *slave) |
300 | { | |
1d3ee88a | 301 | if (slave->backup) { |
302 | slave->backup = 0; | |
072256d1 | 303 | rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); |
1d3ee88a | 304 | } |
e30bc066 JP |
305 | } |
306 | ||
307 | static inline void bond_set_backup_slave(struct slave *slave) | |
308 | { | |
1d3ee88a | 309 | if (!slave->backup) { |
310 | slave->backup = 1; | |
072256d1 | 311 | rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); |
1d3ee88a | 312 | } |
e30bc066 JP |
313 | } |
314 | ||
5e5b0665 | 315 | static inline void bond_set_slave_state(struct slave *slave, |
316 | int slave_state, bool notify) | |
317 | { | |
318 | if (slave->backup == slave_state) | |
319 | return; | |
320 | ||
321 | slave->backup = slave_state; | |
322 | if (notify) { | |
072256d1 | 323 | rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); |
5e5b0665 | 324 | slave->should_notify = 0; |
325 | } else { | |
326 | if (slave->should_notify) | |
327 | slave->should_notify = 0; | |
328 | else | |
329 | slave->should_notify = 1; | |
330 | } | |
331 | } | |
332 | ||
6fde8f03 DT |
333 | static inline void bond_slave_state_change(struct bonding *bond) |
334 | { | |
335 | struct list_head *iter; | |
336 | struct slave *tmp; | |
337 | ||
338 | bond_for_each_slave(bond, tmp, iter) { | |
339 | if (tmp->link == BOND_LINK_UP) | |
340 | bond_set_active_slave(tmp); | |
341 | else if (tmp->link == BOND_LINK_DOWN) | |
342 | bond_set_backup_slave(tmp); | |
343 | } | |
344 | } | |
345 | ||
b0929915 | 346 | static inline void bond_slave_state_notify(struct bonding *bond) |
347 | { | |
348 | struct list_head *iter; | |
349 | struct slave *tmp; | |
350 | ||
351 | bond_for_each_slave(bond, tmp, iter) { | |
352 | if (tmp->should_notify) { | |
072256d1 | 353 | rtmsg_ifinfo(RTM_NEWLINK, tmp->dev, 0, GFP_ATOMIC); |
b0929915 | 354 | tmp->should_notify = 0; |
355 | } | |
356 | } | |
357 | } | |
358 | ||
e30bc066 JP |
359 | static inline int bond_slave_state(struct slave *slave) |
360 | { | |
361 | return slave->backup; | |
362 | } | |
363 | ||
364 | static inline bool bond_is_active_slave(struct slave *slave) | |
365 | { | |
366 | return !bond_slave_state(slave); | |
367 | } | |
368 | ||
891ab54d VF |
369 | static inline bool bond_slave_can_tx(struct slave *slave) |
370 | { | |
371 | return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && | |
372 | bond_is_active_slave(slave); | |
373 | } | |
374 | ||
a549952a JP |
375 | #define BOND_PRI_RESELECT_ALWAYS 0 |
376 | #define BOND_PRI_RESELECT_BETTER 1 | |
377 | #define BOND_PRI_RESELECT_FAILURE 2 | |
378 | ||
3915c1e8 JV |
379 | #define BOND_FOM_NONE 0 |
380 | #define BOND_FOM_ACTIVE 1 | |
381 | #define BOND_FOM_FOLLOW 2 | |
382 | ||
8599b52e VF |
383 | #define BOND_ARP_TARGETS_ANY 0 |
384 | #define BOND_ARP_TARGETS_ALL 1 | |
385 | ||
f5b2b966 JV |
386 | #define BOND_ARP_VALIDATE_NONE 0 |
387 | #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) | |
388 | #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) | |
389 | #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ | |
390 | BOND_ARP_VALIDATE_BACKUP) | |
896149ff VF |
391 | #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) |
392 | #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ | |
393 | BOND_ARP_FILTER) | |
394 | #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ | |
395 | BOND_ARP_FILTER) | |
f5b2b966 | 396 | |
5e5b0665 | 397 | #define BOND_SLAVE_NOTIFY_NOW true |
398 | #define BOND_SLAVE_NOTIFY_LATER false | |
399 | ||
079ca7da AB |
400 | static inline int slave_do_arp_validate(struct bonding *bond, |
401 | struct slave *slave) | |
f5b2b966 | 402 | { |
e30bc066 | 403 | return bond->params.arp_validate & (1 << bond_slave_state(slave)); |
f5b2b966 JV |
404 | } |
405 | ||
bedabf90 | 406 | static inline int slave_do_arp_validate_only(struct bonding *bond) |
896149ff VF |
407 | { |
408 | return bond->params.arp_validate & BOND_ARP_FILTER; | |
409 | } | |
410 | ||
2807a9fe VF |
411 | static inline int bond_is_ip_target_ok(__be32 addr) |
412 | { | |
413 | return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); | |
414 | } | |
415 | ||
8599b52e VF |
416 | /* Get the oldest arp which we've received on this slave for bond's |
417 | * arp_targets. | |
418 | */ | |
419 | static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, | |
420 | struct slave *slave) | |
421 | { | |
422 | int i = 1; | |
423 | unsigned long ret = slave->target_last_arp_rx[0]; | |
424 | ||
425 | for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) | |
426 | if (time_before(slave->target_last_arp_rx[i], ret)) | |
427 | ret = slave->target_last_arp_rx[i]; | |
428 | ||
429 | return ret; | |
430 | } | |
431 | ||
079ca7da | 432 | static inline unsigned long slave_last_rx(struct bonding *bond, |
f8a8ccd5 | 433 | struct slave *slave) |
f5b2b966 | 434 | { |
9f242738 VF |
435 | if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) |
436 | return slave_oldest_target_arp_rx(bond, slave); | |
f5b2b966 | 437 | |
49f17de7 | 438 | return slave->last_rx; |
f5b2b966 JV |
439 | } |
440 | ||
8a8efa22 AW |
441 | #ifdef CONFIG_NET_POLL_CONTROLLER |
442 | static inline void bond_netpoll_send_skb(const struct slave *slave, | |
443 | struct sk_buff *skb) | |
444 | { | |
445 | struct netpoll *np = slave->np; | |
446 | ||
447 | if (np) | |
448 | netpoll_send_skb(np, skb); | |
449 | } | |
450 | #else | |
451 | static inline void bond_netpoll_send_skb(const struct slave *slave, | |
452 | struct sk_buff *skb) | |
453 | { | |
454 | } | |
455 | #endif | |
456 | ||
5e5b0665 | 457 | static inline void bond_set_slave_inactive_flags(struct slave *slave, |
458 | bool notify) | |
1da177e4 | 459 | { |
471cb5a3 | 460 | if (!bond_is_lb(slave->bond)) |
5e5b0665 | 461 | bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); |
471cb5a3 | 462 | if (!slave->bond->params.all_slaves_active) |
2d7011ca | 463 | slave->inactive = 1; |
1da177e4 LT |
464 | } |
465 | ||
5e5b0665 | 466 | static inline void bond_set_slave_active_flags(struct slave *slave, |
467 | bool notify) | |
1da177e4 | 468 | { |
5e5b0665 | 469 | bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); |
2d7011ca JP |
470 | slave->inactive = 0; |
471 | } | |
472 | ||
473 | static inline bool bond_is_slave_inactive(struct slave *slave) | |
474 | { | |
475 | return slave->inactive; | |
1da177e4 LT |
476 | } |
477 | ||
eaddcd76 AG |
478 | static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) |
479 | { | |
480 | struct in_device *in_dev; | |
481 | __be32 addr = 0; | |
482 | ||
483 | rcu_read_lock(); | |
484 | in_dev = __in_dev_get_rcu(dev); | |
485 | ||
486 | if (in_dev) | |
b601fa19 ND |
487 | addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, |
488 | RT_SCOPE_HOST); | |
eaddcd76 AG |
489 | rcu_read_unlock(); |
490 | return addr; | |
491 | } | |
492 | ||
31924325 | 493 | struct bond_net { |
494 | struct net *net; /* Associated network namespace */ | |
495 | struct list_head dev_list; | |
496 | #ifdef CONFIG_PROC_FS | |
497 | struct proc_dir_entry *proc_dir; | |
498 | #endif | |
499 | struct class_attribute class_attr_bonding_masters; | |
500 | }; | |
4c22400a | 501 | |
5bb9e0b5 | 502 | int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); |
d316dedd | 503 | void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); |
ec87fd3b | 504 | int bond_create(struct net *net, const char *name); |
4c22400a EB |
505 | int bond_create_sysfs(struct bond_net *net); |
506 | void bond_destroy_sysfs(struct bond_net *net); | |
6151b3d4 | 507 | void bond_prepare_sysfs_group(struct bonding *bond); |
07699f9a | 508 | int bond_sysfs_slave_add(struct slave *slave); |
509 | void bond_sysfs_slave_del(struct slave *slave); | |
a77b5325 MW |
510 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev); |
511 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); | |
ee62e868 | 512 | u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); |
a77b5325 MW |
513 | void bond_select_active_slave(struct bonding *bond); |
514 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active); | |
f073c7ca TI |
515 | void bond_create_debugfs(void); |
516 | void bond_destroy_debugfs(void); | |
517 | void bond_debug_register(struct bonding *bond); | |
518 | void bond_debug_unregister(struct bonding *bond); | |
519 | void bond_debug_reregister(struct bonding *bond); | |
d30ee670 | 520 | const char *bond_mode_name(int mode); |
0a2a78c4 JP |
521 | void bond_setup(struct net_device *bond_dev); |
522 | unsigned int bond_get_num_tx_queues(void); | |
523 | int bond_netlink_init(void); | |
524 | void bond_netlink_fini(void); | |
752d48b5 | 525 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); |
07699f9a | 526 | const char *bond_slave_link_status(s8 link); |
3e403a77 VF |
527 | struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, |
528 | struct net_device *end_dev, | |
529 | int level); | |
1da177e4 | 530 | |
bd33acc3 AW |
531 | #ifdef CONFIG_PROC_FS |
532 | void bond_create_proc_entry(struct bonding *bond); | |
533 | void bond_remove_proc_entry(struct bonding *bond); | |
534 | void bond_create_proc_dir(struct bond_net *bn); | |
535 | void bond_destroy_proc_dir(struct bond_net *bn); | |
536 | #else | |
537 | static inline void bond_create_proc_entry(struct bonding *bond) | |
538 | { | |
539 | } | |
540 | ||
541 | static inline void bond_remove_proc_entry(struct bonding *bond) | |
542 | { | |
543 | } | |
544 | ||
545 | static inline void bond_create_proc_dir(struct bond_net *bn) | |
546 | { | |
547 | } | |
548 | ||
549 | static inline void bond_destroy_proc_dir(struct bond_net *bn) | |
550 | { | |
551 | } | |
552 | #endif | |
553 | ||
567b871e | 554 | static inline struct slave *bond_slave_has_mac(struct bonding *bond, |
555 | const u8 *mac) | |
556 | { | |
9caff1e7 | 557 | struct list_head *iter; |
567b871e | 558 | struct slave *tmp; |
559 | ||
9caff1e7 | 560 | bond_for_each_slave(bond, tmp, iter) |
567b871e | 561 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) |
562 | return tmp; | |
563 | ||
564 | return NULL; | |
565 | } | |
bd33acc3 | 566 | |
28c71926 | 567 | /* Caller must hold rcu_read_lock() for read */ |
568 | static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond, | |
569 | const u8 *mac) | |
570 | { | |
571 | struct list_head *iter; | |
572 | struct slave *tmp; | |
573 | ||
574 | bond_for_each_slave_rcu(bond, tmp, iter) | |
575 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) | |
576 | return tmp; | |
577 | ||
578 | return NULL; | |
579 | } | |
580 | ||
14af9963 VY |
581 | /* Caller must hold rcu_read_lock() for read */ |
582 | static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) | |
583 | { | |
584 | struct list_head *iter; | |
585 | struct slave *tmp; | |
586 | struct netdev_hw_addr *ha; | |
587 | ||
588 | bond_for_each_slave_rcu(bond, tmp, iter) | |
589 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) | |
590 | return true; | |
591 | ||
592 | if (netdev_uc_empty(bond->dev)) | |
593 | return false; | |
594 | ||
595 | netdev_for_each_uc_addr(ha, bond->dev) | |
596 | if (ether_addr_equal_64bits(mac, ha->addr)) | |
597 | return true; | |
598 | ||
599 | return false; | |
600 | } | |
601 | ||
87a7b84b VF |
602 | /* Check if the ip is present in arp ip list, or first free slot if ip == 0 |
603 | * Returns -1 if not found, index if found | |
604 | */ | |
605 | static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) | |
606 | { | |
607 | int i; | |
608 | ||
609 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) | |
610 | if (targets[i] == ip) | |
611 | return i; | |
612 | else if (targets[i] == 0) | |
613 | break; | |
614 | ||
615 | return -1; | |
616 | } | |
617 | ||
b2259672 | 618 | /* exported from bond_main.c */ |
ec87fd3b | 619 | extern int bond_net_id; |
e97fd7c6 | 620 | extern const struct bond_parm_tbl bond_lacp_tbl[]; |
e97fd7c6 HE |
621 | extern const struct bond_parm_tbl xmit_hashtype_tbl[]; |
622 | extern const struct bond_parm_tbl arp_validate_tbl[]; | |
8599b52e | 623 | extern const struct bond_parm_tbl arp_all_targets_tbl[]; |
e97fd7c6 | 624 | extern const struct bond_parm_tbl fail_over_mac_tbl[]; |
a549952a | 625 | extern const struct bond_parm_tbl pri_reselect_tbl[]; |
b06715b7 HE |
626 | extern struct bond_parm_tbl ad_select_tbl[]; |
627 | ||
0a2a78c4 JP |
628 | /* exported from bond_netlink.c */ |
629 | extern struct rtnl_link_ops bond_link_ops; | |
630 | ||
1da177e4 | 631 | #endif /* _LINUX_BONDING_H */ |