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 | ||
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 | ||
1da177e4 LT |
37 | /* |
38 | * Less bad way to call ioctl from within the kernel; this needs to be | |
39 | * done some other way to get the call out of interrupt context. | |
40 | * Needs "ioctl" variable to be supplied by calling context. | |
41 | */ | |
42 | #define IOCTL(dev, arg, cmd) ({ \ | |
43 | int res = 0; \ | |
44 | mm_segment_t fs = get_fs(); \ | |
45 | set_fs(get_ds()); \ | |
46 | res = ioctl(dev, arg, cmd); \ | |
47 | set_fs(fs); \ | |
48 | res; }) | |
49 | ||
01844098 VF |
50 | #define BOND_MODE(bond) ((bond)->params.mode) |
51 | ||
dec1e90e | 52 | /* slave list primitives */ |
5a52405a VF |
53 | #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower) |
54 | ||
55 | #define bond_has_slaves(bond) !list_empty(bond_slave_list(bond)) | |
0965a1f3 | 56 | |
dec1e90e | 57 | /* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */ |
58 | #define bond_first_slave(bond) \ | |
5a52405a VF |
59 | (bond_has_slaves(bond) ? \ |
60 | netdev_adjacent_get_private(bond_slave_list(bond)->next) : \ | |
61 | NULL) | |
dec1e90e | 62 | #define bond_last_slave(bond) \ |
5a52405a VF |
63 | (bond_has_slaves(bond) ? \ |
64 | netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \ | |
65 | NULL) | |
dec1e90e | 66 | |
e001bfad | 67 | /* Caller must have rcu_read_lock */ |
68 | #define bond_first_slave_rcu(bond) \ | |
69 | netdev_lower_get_first_private_rcu(bond->dev) | |
70 | ||
5a52405a VF |
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)) | |
dec1e90e | 73 | |
1da177e4 | 74 | /** |
dec1e90e | 75 | * bond_for_each_slave - iterate over all slaves |
76 | * @bond: the bond holding this list | |
77 | * @pos: current slave | |
9caff1e7 | 78 | * @iter: list_head * iterator |
1da177e4 | 79 | * |
87163ef9 | 80 | * Caller must hold RTNL |
1da177e4 | 81 | */ |
9caff1e7 VF |
82 | #define bond_for_each_slave(bond, pos, iter) \ |
83 | netdev_for_each_lower_private((bond)->dev, pos, iter) | |
1da177e4 | 84 | |
278b2083 | 85 | /* Caller must have rcu_read_lock */ |
9caff1e7 VF |
86 | #define bond_for_each_slave_rcu(bond, pos, iter) \ |
87 | netdev_for_each_lower_private_rcu((bond)->dev, pos, iter) | |
278b2083 | 88 | |
e843fa50 | 89 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fb4fa76a | 90 | extern atomic_t netpoll_block_tx; |
e843fa50 NH |
91 | |
92 | static inline void block_netpoll_tx(void) | |
93 | { | |
fb4fa76a | 94 | atomic_inc(&netpoll_block_tx); |
e843fa50 NH |
95 | } |
96 | ||
97 | static inline void unblock_netpoll_tx(void) | |
98 | { | |
fb4fa76a | 99 | atomic_dec(&netpoll_block_tx); |
e843fa50 NH |
100 | } |
101 | ||
102 | static inline int is_netpoll_tx_blocked(struct net_device *dev) | |
103 | { | |
080e4130 | 104 | if (unlikely(netpoll_tx_running(dev))) |
fb4fa76a | 105 | return atomic_read(&netpoll_block_tx); |
e843fa50 NH |
106 | return 0; |
107 | } | |
108 | #else | |
109 | #define block_netpoll_tx() | |
110 | #define unblock_netpoll_tx() | |
111 | #define is_netpoll_tx_blocked(dev) (0) | |
112 | #endif | |
113 | ||
1da177e4 LT |
114 | struct bond_params { |
115 | int mode; | |
169a3e66 | 116 | int xmit_policy; |
1da177e4 | 117 | int miimon; |
ad246c99 | 118 | u8 num_peer_notif; |
1da177e4 | 119 | int arp_interval; |
f5b2b966 | 120 | int arp_validate; |
8599b52e | 121 | int arp_all_targets; |
1da177e4 | 122 | int use_carrier; |
dd957c57 | 123 | int fail_over_mac; |
1da177e4 LT |
124 | int updelay; |
125 | int downdelay; | |
126 | int lacp_fast; | |
655f8919 | 127 | unsigned int min_links; |
fd989c83 | 128 | int ad_select; |
1da177e4 | 129 | char primary[IFNAMSIZ]; |
a549952a | 130 | int primary_reselect; |
d3bb52b0 | 131 | __be32 arp_targets[BOND_MAX_ARP_TARGETS]; |
bb1d9123 | 132 | int tx_queues; |
ebd8e497 | 133 | int all_slaves_active; |
c2952c31 | 134 | int resend_igmp; |
7eacd038 | 135 | int lp_interval; |
73958329 | 136 | int packets_per_slave; |
e9f0fb88 | 137 | int tlb_dynamic_lb; |
809fa972 | 138 | struct reciprocal_value reciprocal_packets_per_slave; |
6791e466 | 139 | u16 ad_actor_sys_prio; |
d22a5fc0 | 140 | u16 ad_user_port_key; |
74514957 | 141 | u8 ad_actor_system[ETH_ALEN]; |
1da177e4 LT |
142 | }; |
143 | ||
12479f9a MW |
144 | struct bond_parm_tbl { |
145 | char *modename; | |
146 | int mode; | |
147 | }; | |
148 | ||
69e61133 MS |
149 | struct netdev_notify_work { |
150 | struct delayed_work work; | |
69e61133 | 151 | struct net_device *dev; |
92e584fe | 152 | struct netdev_bonding_info bonding_info; |
69e61133 MS |
153 | }; |
154 | ||
1da177e4 | 155 | struct slave { |
e944ef79 | 156 | struct net_device *dev; /* first - useful for panic debug */ |
35d48903 | 157 | struct bonding *bond; /* our master */ |
8bb5f96b | 158 | int delay; |
8e603460 VF |
159 | /* all three in jiffies */ |
160 | unsigned long last_link_up; | |
49f17de7 | 161 | unsigned long last_rx; |
8599b52e | 162 | unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; |
1da177e4 | 163 | s8 link; /* one of BOND_LINK_XXXX */ |
b2220cad | 164 | s8 new_link; |
2d7011ca JP |
165 | u8 backup:1, /* indicates backup slave. Value corresponds with |
166 | BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ | |
5e5b0665 | 167 | inactive:1, /* indicates inactive slave */ |
5d397061 JP |
168 | should_notify:1, /* indicates whether the state changed */ |
169 | should_notify_link:1; /* indicates whether the link changed */ | |
5d30530e | 170 | u8 duplex; |
3158bf7d | 171 | u32 original_mtu; |
1da177e4 | 172 | u32 link_failure_count; |
5d30530e | 173 | u32 speed; |
bb1d9123 | 174 | u16 queue_id; |
5d30530e | 175 | u8 perm_hwaddr[ETH_ALEN]; |
3fdddd85 | 176 | struct ad_slave_info *ad_info; |
1da177e4 | 177 | struct tlb_slave_info tlb_info; |
8a8efa22 AW |
178 | #ifdef CONFIG_NET_POLL_CONTROLLER |
179 | struct netpoll *np; | |
180 | #endif | |
07699f9a | 181 | struct kobject kobj; |
5f0c5f73 | 182 | struct rtnl_link_stats64 slave_stats; |
1da177e4 LT |
183 | }; |
184 | ||
ee637714 MB |
185 | struct bond_up_slave { |
186 | unsigned int count; | |
187 | struct rcu_head rcu; | |
188 | struct slave *arr[0]; | |
189 | }; | |
190 | ||
b2220cad JV |
191 | /* |
192 | * Link pseudo-state only used internally by monitors | |
193 | */ | |
194 | #define BOND_LINK_NOCHANGE -1 | |
195 | ||
1da177e4 LT |
196 | /* |
197 | * Here are the locking policies for the two bonding locks: | |
1c72cfdc | 198 | * Get rcu_read_lock when reading or RTNL when writing slave list. |
1da177e4 LT |
199 | */ |
200 | struct bonding { | |
e944ef79 | 201 | struct net_device *dev; /* first - useful for panic debug */ |
4740d638 | 202 | struct slave __rcu *curr_active_slave; |
85741718 | 203 | struct slave __rcu *current_arp_slave; |
059b47e8 | 204 | struct slave __rcu *primary_slave; |
ee637714 | 205 | struct bond_up_slave __rcu *slave_arr; /* Array of usable slaves */ |
a549952a | 206 | bool force_primary; |
1da177e4 | 207 | s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ |
de063b70 ED |
208 | int (*recv_probe)(const struct sk_buff *, struct bonding *, |
209 | struct slave *); | |
8c0bc550 NA |
210 | /* mode_lock is used for mode-specific locking needs, currently used by: |
211 | * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and | |
547942ca NA |
212 | * bond_3ad_state_machine_handler() concurrently and also |
213 | * the access to the state machine shared variables. | |
8c0bc550 NA |
214 | * TLB mode (5) - to sync the use and modifications of its hash table |
215 | * ALB mode (6) - to sync the use and modifications of its hash table | |
216 | */ | |
b7435628 | 217 | spinlock_t mode_lock; |
fe30937b | 218 | spinlock_t stats_lock; |
ad246c99 | 219 | u8 send_peer_notif; |
4f5474e7 | 220 | u8 igmp_retrans; |
1da177e4 LT |
221 | #ifdef CONFIG_PROC_FS |
222 | struct proc_dir_entry *proc_entry; | |
223 | char proc_file_name[IFNAMSIZ]; | |
224 | #endif /* CONFIG_PROC_FS */ | |
225 | struct list_head bond_list; | |
73958329 | 226 | u32 rr_tx_counter; |
1da177e4 LT |
227 | struct ad_bond_info ad_info; |
228 | struct alb_bond_info alb_info; | |
229 | struct bond_params params; | |
1b76b316 JV |
230 | struct workqueue_struct *wq; |
231 | struct delayed_work mii_work; | |
232 | struct delayed_work arp_work; | |
233 | struct delayed_work alb_work; | |
234 | struct delayed_work ad_work; | |
5a37e8ca | 235 | struct delayed_work mcast_work; |
ee637714 | 236 | struct delayed_work slave_arr_work; |
f073c7ca | 237 | #ifdef CONFIG_DEBUG_FS |
02582e9b | 238 | /* debugging support via debugfs */ |
f073c7ca TI |
239 | struct dentry *debug_dir; |
240 | #endif /* CONFIG_DEBUG_FS */ | |
5f0c5f73 | 241 | struct rtnl_link_stats64 bond_stats; |
1da177e4 LT |
242 | }; |
243 | ||
f1c1775a JP |
244 | #define bond_slave_get_rcu(dev) \ |
245 | ((struct slave *) rcu_dereference(dev->rx_handler_data)) | |
246 | ||
471cb5a3 JP |
247 | #define bond_slave_get_rtnl(dev) \ |
248 | ((struct slave *) rtnl_dereference(dev->rx_handler_data)) | |
249 | ||
69e61133 | 250 | void bond_queue_slave_event(struct slave *slave); |
f7c7eb7f | 251 | void bond_lower_state_changed(struct slave *slave); |
69e61133 | 252 | |
fbd929f2 | 253 | struct bond_vlan_tag { |
254 | __be16 vlan_proto; | |
255 | unsigned short vlan_id; | |
256 | }; | |
257 | ||
1da177e4 LT |
258 | /** |
259 | * Returns NULL if the net_device does not belong to any of the bond's slaves | |
260 | * | |
261 | * Caller must hold bond lock for read | |
262 | */ | |
4ec952b8 | 263 | static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, |
264 | struct net_device *slave_dev) | |
1da177e4 | 265 | { |
46bb4807 | 266 | return netdev_lower_dev_get_private(bond->dev, slave_dev); |
1da177e4 LT |
267 | } |
268 | ||
cceb904f | 269 | static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) |
1da177e4 | 270 | { |
471cb5a3 | 271 | return slave->bond; |
1da177e4 LT |
272 | } |
273 | ||
d1e2e5cd VF |
274 | static inline bool bond_should_override_tx_queue(struct bonding *bond) |
275 | { | |
01844098 VF |
276 | return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || |
277 | BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; | |
d1e2e5cd VF |
278 | } |
279 | ||
58402054 HE |
280 | static inline bool bond_is_lb(const struct bonding *bond) |
281 | { | |
01844098 VF |
282 | return BOND_MODE(bond) == BOND_MODE_TLB || |
283 | BOND_MODE(bond) == BOND_MODE_ALB; | |
58402054 HE |
284 | } |
285 | ||
6b794c1c MB |
286 | static inline bool bond_is_nondyn_tlb(const struct bonding *bond) |
287 | { | |
288 | return (BOND_MODE(bond) == BOND_MODE_TLB) && | |
289 | (bond->params.tlb_dynamic_lb == 0); | |
290 | } | |
291 | ||
d7021325 MB |
292 | static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) |
293 | { | |
294 | return (BOND_MODE(bond) == BOND_MODE_8023AD || | |
295 | BOND_MODE(bond) == BOND_MODE_XOR || | |
296 | bond_is_nondyn_tlb(bond)); | |
297 | } | |
298 | ||
267bed77 VF |
299 | static inline bool bond_mode_uses_arp(int mode) |
300 | { | |
301 | return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && | |
302 | mode != BOND_MODE_ALB; | |
303 | } | |
304 | ||
ec0865a9 VF |
305 | static inline bool bond_mode_uses_primary(int mode) |
306 | { | |
307 | return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || | |
308 | mode == BOND_MODE_ALB; | |
309 | } | |
310 | ||
311 | static inline bool bond_uses_primary(struct bonding *bond) | |
312 | { | |
01844098 | 313 | return bond_mode_uses_primary(BOND_MODE(bond)); |
ec0865a9 VF |
314 | } |
315 | ||
e9998695 MB |
316 | static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) |
317 | { | |
318 | struct slave *slave = rcu_dereference(bond->curr_active_slave); | |
319 | ||
320 | return bond_uses_primary(bond) && slave ? slave->dev : NULL; | |
321 | } | |
322 | ||
b6adc610 VF |
323 | static inline bool bond_slave_is_up(struct slave *slave) |
324 | { | |
325 | return netif_running(slave->dev) && netif_carrier_ok(slave->dev); | |
326 | } | |
327 | ||
e30bc066 JP |
328 | static inline void bond_set_active_slave(struct slave *slave) |
329 | { | |
1d3ee88a | 330 | if (slave->backup) { |
331 | slave->backup = 0; | |
69e61133 | 332 | bond_queue_slave_event(slave); |
f7c7eb7f | 333 | bond_lower_state_changed(slave); |
072256d1 | 334 | rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); |
1d3ee88a | 335 | } |
e30bc066 JP |
336 | } |
337 | ||
338 | static inline void bond_set_backup_slave(struct slave *slave) | |
339 | { | |
1d3ee88a | 340 | if (!slave->backup) { |
341 | slave->backup = 1; | |
69e61133 | 342 | bond_queue_slave_event(slave); |
f7c7eb7f | 343 | bond_lower_state_changed(slave); |
072256d1 | 344 | rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); |
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); |
072256d1 | 357 | rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC); |
69e61133 | 358 | bond_queue_slave_event(slave); |
5e5b0665 | 359 | slave->should_notify = 0; |
360 | } else { | |
361 | if (slave->should_notify) | |
362 | slave->should_notify = 0; | |
363 | else | |
364 | slave->should_notify = 1; | |
365 | } | |
366 | } | |
367 | ||
6fde8f03 DT |
368 | static inline void bond_slave_state_change(struct bonding *bond) |
369 | { | |
370 | struct list_head *iter; | |
371 | struct slave *tmp; | |
372 | ||
373 | bond_for_each_slave(bond, tmp, iter) { | |
374 | if (tmp->link == BOND_LINK_UP) | |
375 | bond_set_active_slave(tmp); | |
376 | else if (tmp->link == BOND_LINK_DOWN) | |
377 | bond_set_backup_slave(tmp); | |
378 | } | |
379 | } | |
380 | ||
b0929915 | 381 | static inline void bond_slave_state_notify(struct bonding *bond) |
382 | { | |
383 | struct list_head *iter; | |
384 | struct slave *tmp; | |
385 | ||
386 | bond_for_each_slave(bond, tmp, iter) { | |
387 | if (tmp->should_notify) { | |
f7c7eb7f | 388 | bond_lower_state_changed(tmp); |
072256d1 | 389 | rtmsg_ifinfo(RTM_NEWLINK, tmp->dev, 0, GFP_ATOMIC); |
b0929915 | 390 | tmp->should_notify = 0; |
391 | } | |
392 | } | |
393 | } | |
394 | ||
e30bc066 JP |
395 | static inline int bond_slave_state(struct slave *slave) |
396 | { | |
397 | return slave->backup; | |
398 | } | |
399 | ||
400 | static inline bool bond_is_active_slave(struct slave *slave) | |
401 | { | |
402 | return !bond_slave_state(slave); | |
403 | } | |
404 | ||
891ab54d VF |
405 | static inline bool bond_slave_can_tx(struct slave *slave) |
406 | { | |
407 | return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && | |
408 | bond_is_active_slave(slave); | |
409 | } | |
410 | ||
a549952a JP |
411 | #define BOND_PRI_RESELECT_ALWAYS 0 |
412 | #define BOND_PRI_RESELECT_BETTER 1 | |
413 | #define BOND_PRI_RESELECT_FAILURE 2 | |
414 | ||
3915c1e8 JV |
415 | #define BOND_FOM_NONE 0 |
416 | #define BOND_FOM_ACTIVE 1 | |
417 | #define BOND_FOM_FOLLOW 2 | |
418 | ||
8599b52e VF |
419 | #define BOND_ARP_TARGETS_ANY 0 |
420 | #define BOND_ARP_TARGETS_ALL 1 | |
421 | ||
f5b2b966 JV |
422 | #define BOND_ARP_VALIDATE_NONE 0 |
423 | #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) | |
424 | #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) | |
425 | #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ | |
426 | BOND_ARP_VALIDATE_BACKUP) | |
896149ff VF |
427 | #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) |
428 | #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ | |
429 | BOND_ARP_FILTER) | |
430 | #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ | |
431 | BOND_ARP_FILTER) | |
f5b2b966 | 432 | |
5e5b0665 | 433 | #define BOND_SLAVE_NOTIFY_NOW true |
434 | #define BOND_SLAVE_NOTIFY_LATER false | |
435 | ||
079ca7da AB |
436 | static inline int slave_do_arp_validate(struct bonding *bond, |
437 | struct slave *slave) | |
f5b2b966 | 438 | { |
e30bc066 | 439 | return bond->params.arp_validate & (1 << bond_slave_state(slave)); |
f5b2b966 JV |
440 | } |
441 | ||
bedabf90 | 442 | static inline int slave_do_arp_validate_only(struct bonding *bond) |
896149ff VF |
443 | { |
444 | return bond->params.arp_validate & BOND_ARP_FILTER; | |
445 | } | |
446 | ||
2807a9fe VF |
447 | static inline int bond_is_ip_target_ok(__be32 addr) |
448 | { | |
449 | return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); | |
450 | } | |
451 | ||
8599b52e VF |
452 | /* Get the oldest arp which we've received on this slave for bond's |
453 | * arp_targets. | |
454 | */ | |
455 | static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, | |
456 | struct slave *slave) | |
457 | { | |
458 | int i = 1; | |
459 | unsigned long ret = slave->target_last_arp_rx[0]; | |
460 | ||
461 | for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) | |
462 | if (time_before(slave->target_last_arp_rx[i], ret)) | |
463 | ret = slave->target_last_arp_rx[i]; | |
464 | ||
465 | return ret; | |
466 | } | |
467 | ||
079ca7da | 468 | static inline unsigned long slave_last_rx(struct bonding *bond, |
f8a8ccd5 | 469 | struct slave *slave) |
f5b2b966 | 470 | { |
9f242738 VF |
471 | if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) |
472 | return slave_oldest_target_arp_rx(bond, slave); | |
f5b2b966 | 473 | |
49f17de7 | 474 | return slave->last_rx; |
f5b2b966 JV |
475 | } |
476 | ||
8a8efa22 AW |
477 | #ifdef CONFIG_NET_POLL_CONTROLLER |
478 | static inline void bond_netpoll_send_skb(const struct slave *slave, | |
479 | struct sk_buff *skb) | |
480 | { | |
481 | struct netpoll *np = slave->np; | |
482 | ||
483 | if (np) | |
484 | netpoll_send_skb(np, skb); | |
485 | } | |
486 | #else | |
487 | static inline void bond_netpoll_send_skb(const struct slave *slave, | |
488 | struct sk_buff *skb) | |
489 | { | |
490 | } | |
491 | #endif | |
492 | ||
5e5b0665 | 493 | static inline void bond_set_slave_inactive_flags(struct slave *slave, |
494 | bool notify) | |
1da177e4 | 495 | { |
471cb5a3 | 496 | if (!bond_is_lb(slave->bond)) |
5e5b0665 | 497 | bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); |
471cb5a3 | 498 | if (!slave->bond->params.all_slaves_active) |
2d7011ca | 499 | slave->inactive = 1; |
1da177e4 LT |
500 | } |
501 | ||
5e5b0665 | 502 | static inline void bond_set_slave_active_flags(struct slave *slave, |
503 | bool notify) | |
1da177e4 | 504 | { |
5e5b0665 | 505 | bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); |
2d7011ca JP |
506 | slave->inactive = 0; |
507 | } | |
508 | ||
509 | static inline bool bond_is_slave_inactive(struct slave *slave) | |
510 | { | |
511 | return slave->inactive; | |
1da177e4 LT |
512 | } |
513 | ||
5d397061 JP |
514 | static inline void bond_set_slave_link_state(struct slave *slave, int state, |
515 | bool notify) | |
69a2338e | 516 | { |
5d397061 JP |
517 | if (slave->link == state) |
518 | return; | |
519 | ||
69a2338e | 520 | slave->link = state; |
5d397061 JP |
521 | if (notify) { |
522 | bond_queue_slave_event(slave); | |
f7c7eb7f | 523 | bond_lower_state_changed(slave); |
5d397061 JP |
524 | slave->should_notify_link = 0; |
525 | } else { | |
526 | if (slave->should_notify_link) | |
527 | slave->should_notify_link = 0; | |
528 | else | |
529 | slave->should_notify_link = 1; | |
530 | } | |
531 | } | |
532 | ||
533 | static inline void bond_slave_link_notify(struct bonding *bond) | |
534 | { | |
535 | struct list_head *iter; | |
536 | struct slave *tmp; | |
537 | ||
538 | bond_for_each_slave(bond, tmp, iter) { | |
539 | if (tmp->should_notify_link) { | |
540 | bond_queue_slave_event(tmp); | |
f7c7eb7f | 541 | bond_lower_state_changed(tmp); |
5d397061 JP |
542 | tmp->should_notify_link = 0; |
543 | } | |
544 | } | |
69a2338e MS |
545 | } |
546 | ||
eaddcd76 AG |
547 | static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) |
548 | { | |
549 | struct in_device *in_dev; | |
550 | __be32 addr = 0; | |
551 | ||
552 | rcu_read_lock(); | |
553 | in_dev = __in_dev_get_rcu(dev); | |
554 | ||
555 | if (in_dev) | |
b601fa19 ND |
556 | addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, |
557 | RT_SCOPE_HOST); | |
eaddcd76 AG |
558 | rcu_read_unlock(); |
559 | return addr; | |
560 | } | |
561 | ||
31924325 | 562 | struct bond_net { |
563 | struct net *net; /* Associated network namespace */ | |
564 | struct list_head dev_list; | |
565 | #ifdef CONFIG_PROC_FS | |
566 | struct proc_dir_entry *proc_dir; | |
567 | #endif | |
568 | struct class_attribute class_attr_bonding_masters; | |
569 | }; | |
4c22400a | 570 | |
5bb9e0b5 | 571 | int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); |
d316dedd | 572 | void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); |
ec87fd3b | 573 | int bond_create(struct net *net, const char *name); |
4c22400a EB |
574 | int bond_create_sysfs(struct bond_net *net); |
575 | void bond_destroy_sysfs(struct bond_net *net); | |
6151b3d4 | 576 | void bond_prepare_sysfs_group(struct bonding *bond); |
07699f9a | 577 | int bond_sysfs_slave_add(struct slave *slave); |
578 | void bond_sysfs_slave_del(struct slave *slave); | |
a77b5325 MW |
579 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev); |
580 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); | |
ee62e868 | 581 | u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); |
2477bc9a | 582 | int bond_set_carrier(struct bonding *bond); |
a77b5325 MW |
583 | void bond_select_active_slave(struct bonding *bond); |
584 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active); | |
f073c7ca TI |
585 | void bond_create_debugfs(void); |
586 | void bond_destroy_debugfs(void); | |
587 | void bond_debug_register(struct bonding *bond); | |
588 | void bond_debug_unregister(struct bonding *bond); | |
589 | void bond_debug_reregister(struct bonding *bond); | |
d30ee670 | 590 | const char *bond_mode_name(int mode); |
0a2a78c4 JP |
591 | void bond_setup(struct net_device *bond_dev); |
592 | unsigned int bond_get_num_tx_queues(void); | |
593 | int bond_netlink_init(void); | |
594 | void bond_netlink_fini(void); | |
752d48b5 | 595 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); |
07699f9a | 596 | const char *bond_slave_link_status(s8 link); |
3e403a77 VF |
597 | struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, |
598 | struct net_device *end_dev, | |
599 | int level); | |
ee637714 MB |
600 | int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); |
601 | void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); | |
1da177e4 | 602 | |
bd33acc3 AW |
603 | #ifdef CONFIG_PROC_FS |
604 | void bond_create_proc_entry(struct bonding *bond); | |
605 | void bond_remove_proc_entry(struct bonding *bond); | |
606 | void bond_create_proc_dir(struct bond_net *bn); | |
607 | void bond_destroy_proc_dir(struct bond_net *bn); | |
608 | #else | |
609 | static inline void bond_create_proc_entry(struct bonding *bond) | |
610 | { | |
611 | } | |
612 | ||
613 | static inline void bond_remove_proc_entry(struct bonding *bond) | |
614 | { | |
615 | } | |
616 | ||
617 | static inline void bond_create_proc_dir(struct bond_net *bn) | |
618 | { | |
619 | } | |
620 | ||
621 | static inline void bond_destroy_proc_dir(struct bond_net *bn) | |
622 | { | |
623 | } | |
624 | #endif | |
625 | ||
567b871e | 626 | static inline struct slave *bond_slave_has_mac(struct bonding *bond, |
627 | const u8 *mac) | |
628 | { | |
9caff1e7 | 629 | struct list_head *iter; |
567b871e | 630 | struct slave *tmp; |
631 | ||
9caff1e7 | 632 | bond_for_each_slave(bond, tmp, iter) |
567b871e | 633 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) |
634 | return tmp; | |
635 | ||
636 | return NULL; | |
637 | } | |
bd33acc3 | 638 | |
28c71926 | 639 | /* Caller must hold rcu_read_lock() for read */ |
640 | static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond, | |
641 | const u8 *mac) | |
642 | { | |
643 | struct list_head *iter; | |
644 | struct slave *tmp; | |
645 | ||
646 | bond_for_each_slave_rcu(bond, tmp, iter) | |
647 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) | |
648 | return tmp; | |
649 | ||
650 | return NULL; | |
651 | } | |
652 | ||
14af9963 VY |
653 | /* Caller must hold rcu_read_lock() for read */ |
654 | static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) | |
655 | { | |
656 | struct list_head *iter; | |
657 | struct slave *tmp; | |
658 | struct netdev_hw_addr *ha; | |
659 | ||
660 | bond_for_each_slave_rcu(bond, tmp, iter) | |
661 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) | |
662 | return true; | |
663 | ||
664 | if (netdev_uc_empty(bond->dev)) | |
665 | return false; | |
666 | ||
667 | netdev_for_each_uc_addr(ha, bond->dev) | |
668 | if (ether_addr_equal_64bits(mac, ha->addr)) | |
669 | return true; | |
670 | ||
671 | return false; | |
672 | } | |
673 | ||
87a7b84b VF |
674 | /* Check if the ip is present in arp ip list, or first free slot if ip == 0 |
675 | * Returns -1 if not found, index if found | |
676 | */ | |
677 | static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) | |
678 | { | |
679 | int i; | |
680 | ||
681 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) | |
682 | if (targets[i] == ip) | |
683 | return i; | |
684 | else if (targets[i] == 0) | |
685 | break; | |
686 | ||
687 | return -1; | |
688 | } | |
689 | ||
b2259672 | 690 | /* exported from bond_main.c */ |
ec87fd3b | 691 | extern int bond_net_id; |
e97fd7c6 | 692 | extern const struct bond_parm_tbl bond_lacp_tbl[]; |
e97fd7c6 HE |
693 | extern const struct bond_parm_tbl xmit_hashtype_tbl[]; |
694 | extern const struct bond_parm_tbl arp_validate_tbl[]; | |
8599b52e | 695 | extern const struct bond_parm_tbl arp_all_targets_tbl[]; |
e97fd7c6 | 696 | extern const struct bond_parm_tbl fail_over_mac_tbl[]; |
a549952a | 697 | extern const struct bond_parm_tbl pri_reselect_tbl[]; |
b06715b7 HE |
698 | extern struct bond_parm_tbl ad_select_tbl[]; |
699 | ||
0a2a78c4 JP |
700 | /* exported from bond_netlink.c */ |
701 | extern struct rtnl_link_ops bond_link_ops; | |
702 | ||
31aa860e ED |
703 | static inline void bond_tx_drop(struct net_device *dev, struct sk_buff *skb) |
704 | { | |
705 | atomic_long_inc(&dev->tx_dropped); | |
706 | dev_kfree_skb_any(skb); | |
707 | } | |
708 | ||
1ef8019b | 709 | #endif /* _NET_BONDING_H */ |