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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 | |
5237ff79 JW |
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 | ||
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 | |
a3b658cf JW |
89 | #define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ |
90 | NETIF_F_GSO_ESP) | |
a3b658cf | 91 | |
e843fa50 | 92 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fb4fa76a | 93 | extern atomic_t netpoll_block_tx; |
e843fa50 NH |
94 | |
95 | static inline void block_netpoll_tx(void) | |
96 | { | |
fb4fa76a | 97 | atomic_inc(&netpoll_block_tx); |
e843fa50 NH |
98 | } |
99 | ||
100 | static inline void unblock_netpoll_tx(void) | |
101 | { | |
fb4fa76a | 102 | atomic_dec(&netpoll_block_tx); |
e843fa50 NH |
103 | } |
104 | ||
105 | static inline int is_netpoll_tx_blocked(struct net_device *dev) | |
106 | { | |
080e4130 | 107 | if (unlikely(netpoll_tx_running(dev))) |
fb4fa76a | 108 | return atomic_read(&netpoll_block_tx); |
e843fa50 NH |
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 | ||
1da177e4 LT |
117 | struct bond_params { |
118 | int mode; | |
169a3e66 | 119 | int xmit_policy; |
1da177e4 | 120 | int miimon; |
ad246c99 | 121 | u8 num_peer_notif; |
1da177e4 | 122 | int arp_interval; |
f5b2b966 | 123 | int arp_validate; |
8599b52e | 124 | int arp_all_targets; |
1da177e4 | 125 | int use_carrier; |
dd957c57 | 126 | int fail_over_mac; |
1da177e4 LT |
127 | int updelay; |
128 | int downdelay; | |
07a4ddec | 129 | int peer_notif_delay; |
1da177e4 | 130 | int lacp_fast; |
655f8919 | 131 | unsigned int min_links; |
fd989c83 | 132 | int ad_select; |
1da177e4 | 133 | char primary[IFNAMSIZ]; |
a549952a | 134 | int primary_reselect; |
d3bb52b0 | 135 | __be32 arp_targets[BOND_MAX_ARP_TARGETS]; |
bb1d9123 | 136 | int tx_queues; |
ebd8e497 | 137 | int all_slaves_active; |
c2952c31 | 138 | int resend_igmp; |
7eacd038 | 139 | int lp_interval; |
73958329 | 140 | int packets_per_slave; |
e9f0fb88 | 141 | int tlb_dynamic_lb; |
809fa972 | 142 | struct reciprocal_value reciprocal_packets_per_slave; |
6791e466 | 143 | u16 ad_actor_sys_prio; |
d22a5fc0 | 144 | u16 ad_user_port_key; |
f87fda00 ED |
145 | |
146 | /* 2 bytes of padding : see ether_addr_equal_64bits() */ | |
147 | u8 ad_actor_system[ETH_ALEN + 2]; | |
1da177e4 LT |
148 | }; |
149 | ||
12479f9a MW |
150 | struct bond_parm_tbl { |
151 | char *modename; | |
152 | int mode; | |
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]; |
f307668b MB |
163 | s8 link; /* one of BOND_LINK_XXXX */ |
164 | s8 link_new_state; /* one of BOND_LINK_XXXX */ | |
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; |
faeeb317 | 175 | u8 perm_hwaddr[MAX_ADDR_LEN]; |
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 | |
d4859d74 | 181 | struct delayed_work notify_work; |
07699f9a | 182 | struct kobject kobj; |
5f0c5f73 | 183 | struct rtnl_link_stats64 slave_stats; |
1da177e4 LT |
184 | }; |
185 | ||
b9ad3e9f JI |
186 | static inline struct slave *to_slave(struct kobject *kobj) |
187 | { | |
188 | return container_of(kobj, struct slave, kobj); | |
189 | } | |
190 | ||
ee637714 MB |
191 | struct bond_up_slave { |
192 | unsigned int count; | |
193 | struct rcu_head rcu; | |
749db093 | 194 | struct slave *arr[]; |
ee637714 MB |
195 | }; |
196 | ||
b2220cad JV |
197 | /* |
198 | * Link pseudo-state only used internally by monitors | |
199 | */ | |
200 | #define BOND_LINK_NOCHANGE -1 | |
201 | ||
1da177e4 LT |
202 | /* |
203 | * Here are the locking policies for the two bonding locks: | |
1c72cfdc | 204 | * Get rcu_read_lock when reading or RTNL when writing slave list. |
1da177e4 LT |
205 | */ |
206 | struct bonding { | |
e944ef79 | 207 | struct net_device *dev; /* first - useful for panic debug */ |
4740d638 | 208 | struct slave __rcu *curr_active_slave; |
85741718 | 209 | struct slave __rcu *current_arp_slave; |
059b47e8 | 210 | struct slave __rcu *primary_slave; |
6b447e76 MG |
211 | struct bond_up_slave __rcu *usable_slaves; |
212 | struct bond_up_slave __rcu *all_slaves; | |
a549952a | 213 | bool force_primary; |
1da177e4 | 214 | s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ |
de063b70 ED |
215 | int (*recv_probe)(const struct sk_buff *, struct bonding *, |
216 | struct slave *); | |
8c0bc550 NA |
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 | |
547942ca NA |
219 | * bond_3ad_state_machine_handler() concurrently and also |
220 | * the access to the state machine shared variables. | |
8c0bc550 NA |
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 | */ | |
b7435628 | 224 | spinlock_t mode_lock; |
fe30937b | 225 | spinlock_t stats_lock; |
ad246c99 | 226 | u8 send_peer_notif; |
4f5474e7 | 227 | u8 igmp_retrans; |
1da177e4 LT |
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; | |
73958329 | 233 | u32 rr_tx_counter; |
1da177e4 LT |
234 | struct ad_bond_info ad_info; |
235 | struct alb_bond_info alb_info; | |
236 | struct bond_params params; | |
1b76b316 JV |
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; | |
5a37e8ca | 242 | struct delayed_work mcast_work; |
ee637714 | 243 | struct delayed_work slave_arr_work; |
f073c7ca | 244 | #ifdef CONFIG_DEBUG_FS |
02582e9b | 245 | /* debugging support via debugfs */ |
f073c7ca TI |
246 | struct dentry *debug_dir; |
247 | #endif /* CONFIG_DEBUG_FS */ | |
5f0c5f73 | 248 | struct rtnl_link_stats64 bond_stats; |
18cb261a JW |
249 | #ifdef CONFIG_XFRM_OFFLOAD |
250 | struct xfrm_state *xs; | |
251 | #endif /* CONFIG_XFRM_OFFLOAD */ | |
1da177e4 LT |
252 | }; |
253 | ||
f1c1775a JP |
254 | #define bond_slave_get_rcu(dev) \ |
255 | ((struct slave *) rcu_dereference(dev->rx_handler_data)) | |
256 | ||
471cb5a3 JP |
257 | #define bond_slave_get_rtnl(dev) \ |
258 | ((struct slave *) rtnl_dereference(dev->rx_handler_data)) | |
259 | ||
69e61133 | 260 | void bond_queue_slave_event(struct slave *slave); |
f7c7eb7f | 261 | void bond_lower_state_changed(struct slave *slave); |
69e61133 | 262 | |
fbd929f2 | 263 | struct bond_vlan_tag { |
264 | __be16 vlan_proto; | |
265 | unsigned short vlan_id; | |
266 | }; | |
267 | ||
1da177e4 LT |
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 | */ | |
4ec952b8 | 273 | static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, |
274 | struct net_device *slave_dev) | |
1da177e4 | 275 | { |
46bb4807 | 276 | return netdev_lower_dev_get_private(bond->dev, slave_dev); |
1da177e4 LT |
277 | } |
278 | ||
cceb904f | 279 | static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) |
1da177e4 | 280 | { |
471cb5a3 | 281 | return slave->bond; |
1da177e4 LT |
282 | } |
283 | ||
d1e2e5cd VF |
284 | static inline bool bond_should_override_tx_queue(struct bonding *bond) |
285 | { | |
01844098 VF |
286 | return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || |
287 | BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; | |
d1e2e5cd VF |
288 | } |
289 | ||
58402054 HE |
290 | static inline bool bond_is_lb(const struct bonding *bond) |
291 | { | |
01844098 VF |
292 | return BOND_MODE(bond) == BOND_MODE_TLB || |
293 | BOND_MODE(bond) == BOND_MODE_ALB; | |
58402054 HE |
294 | } |
295 | ||
ad729bc9 AB |
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 | ||
6b794c1c MB |
301 | static inline bool bond_is_nondyn_tlb(const struct bonding *bond) |
302 | { | |
e79c1055 DB |
303 | return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); |
304 | } | |
305 | ||
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); | |
6b794c1c MB |
312 | } |
313 | ||
d7021325 MB |
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 | ||
267bed77 VF |
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 | ||
ec0865a9 VF |
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 | ||
333 | static inline bool bond_uses_primary(struct bonding *bond) | |
334 | { | |
01844098 | 335 | return bond_mode_uses_primary(BOND_MODE(bond)); |
ec0865a9 VF |
336 | } |
337 | ||
e9998695 MB |
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 | ||
b6adc610 VF |
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 | ||
e30bc066 JP |
350 | static inline void bond_set_active_slave(struct slave *slave) |
351 | { | |
1d3ee88a | 352 | if (slave->backup) { |
353 | slave->backup = 0; | |
69e61133 | 354 | bond_queue_slave_event(slave); |
f7c7eb7f | 355 | bond_lower_state_changed(slave); |
1d3ee88a | 356 | } |
e30bc066 JP |
357 | } |
358 | ||
359 | static inline void bond_set_backup_slave(struct slave *slave) | |
360 | { | |
1d3ee88a | 361 | if (!slave->backup) { |
362 | slave->backup = 1; | |
69e61133 | 363 | bond_queue_slave_event(slave); |
f7c7eb7f | 364 | bond_lower_state_changed(slave); |
1d3ee88a | 365 | } |
e30bc066 JP |
366 | } |
367 | ||
5e5b0665 | 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) { | |
f7c7eb7f | 376 | bond_lower_state_changed(slave); |
69e61133 | 377 | bond_queue_slave_event(slave); |
5e5b0665 | 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 | ||
6fde8f03 DT |
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 | ||
b0929915 | 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) { | |
f7c7eb7f | 407 | bond_lower_state_changed(tmp); |
b0929915 | 408 | tmp->should_notify = 0; |
409 | } | |
410 | } | |
411 | } | |
412 | ||
e30bc066 JP |
413 | static inline int bond_slave_state(struct slave *slave) |
414 | { | |
415 | return slave->backup; | |
416 | } | |
417 | ||
418 | static inline bool bond_is_active_slave(struct slave *slave) | |
419 | { | |
420 | return !bond_slave_state(slave); | |
421 | } | |
422 | ||
891ab54d VF |
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 | ||
eeed992b PM |
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 | ||
faeeb317 JW |
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 | ||
a549952a JP |
452 | #define BOND_PRI_RESELECT_ALWAYS 0 |
453 | #define BOND_PRI_RESELECT_BETTER 1 | |
454 | #define BOND_PRI_RESELECT_FAILURE 2 | |
455 | ||
3915c1e8 JV |
456 | #define BOND_FOM_NONE 0 |
457 | #define BOND_FOM_ACTIVE 1 | |
458 | #define BOND_FOM_FOLLOW 2 | |
459 | ||
8599b52e VF |
460 | #define BOND_ARP_TARGETS_ANY 0 |
461 | #define BOND_ARP_TARGETS_ALL 1 | |
462 | ||
f5b2b966 JV |
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) | |
896149ff VF |
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) | |
f5b2b966 | 473 | |
5e5b0665 | 474 | #define BOND_SLAVE_NOTIFY_NOW true |
475 | #define BOND_SLAVE_NOTIFY_LATER false | |
476 | ||
079ca7da AB |
477 | static inline int slave_do_arp_validate(struct bonding *bond, |
478 | struct slave *slave) | |
f5b2b966 | 479 | { |
e30bc066 | 480 | return bond->params.arp_validate & (1 << bond_slave_state(slave)); |
f5b2b966 JV |
481 | } |
482 | ||
bedabf90 | 483 | static inline int slave_do_arp_validate_only(struct bonding *bond) |
896149ff VF |
484 | { |
485 | return bond->params.arp_validate & BOND_ARP_FILTER; | |
486 | } | |
487 | ||
2807a9fe VF |
488 | static inline int bond_is_ip_target_ok(__be32 addr) |
489 | { | |
490 | return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); | |
491 | } | |
492 | ||
8599b52e VF |
493 | /* Get the oldest arp which we've received on this slave for bond's |
494 | * arp_targets. | |
495 | */ | |
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 | ||
079ca7da | 509 | static inline unsigned long slave_last_rx(struct bonding *bond, |
f8a8ccd5 | 510 | struct slave *slave) |
f5b2b966 | 511 | { |
9f242738 VF |
512 | if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) |
513 | return slave_oldest_target_arp_rx(bond, slave); | |
f5b2b966 | 514 | |
49f17de7 | 515 | return slave->last_rx; |
f5b2b966 JV |
516 | } |
517 | ||
8a8efa22 | 518 | #ifdef CONFIG_NET_POLL_CONTROLLER |
ae46f184 | 519 | static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, |
8a8efa22 AW |
520 | struct sk_buff *skb) |
521 | { | |
ae46f184 | 522 | return netpoll_send_skb(slave->np, skb); |
8a8efa22 AW |
523 | } |
524 | #else | |
ae46f184 | 525 | static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, |
8a8efa22 AW |
526 | struct sk_buff *skb) |
527 | { | |
ae46f184 ED |
528 | BUG(); |
529 | return NETDEV_TX_OK; | |
8a8efa22 AW |
530 | } |
531 | #endif | |
532 | ||
5e5b0665 | 533 | static inline void bond_set_slave_inactive_flags(struct slave *slave, |
534 | bool notify) | |
1da177e4 | 535 | { |
471cb5a3 | 536 | if (!bond_is_lb(slave->bond)) |
5e5b0665 | 537 | bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); |
471cb5a3 | 538 | if (!slave->bond->params.all_slaves_active) |
2d7011ca | 539 | slave->inactive = 1; |
1da177e4 LT |
540 | } |
541 | ||
5e5b0665 | 542 | static inline void bond_set_slave_active_flags(struct slave *slave, |
543 | bool notify) | |
1da177e4 | 544 | { |
5e5b0665 | 545 | bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); |
2d7011ca JP |
546 | slave->inactive = 0; |
547 | } | |
548 | ||
549 | static inline bool bond_is_slave_inactive(struct slave *slave) | |
550 | { | |
551 | return slave->inactive; | |
1da177e4 LT |
552 | } |
553 | ||
f307668b MB |
554 | static inline void bond_propose_link_state(struct slave *slave, int state) |
555 | { | |
556 | slave->link_new_state = state; | |
557 | } | |
558 | ||
559 | static inline void bond_commit_link_state(struct slave *slave, bool notify) | |
69a2338e | 560 | { |
1899bb32 | 561 | if (slave->link_new_state == BOND_LINK_NOCHANGE) |
5d397061 JP |
562 | return; |
563 | ||
f307668b | 564 | slave->link = slave->link_new_state; |
5d397061 JP |
565 | if (notify) { |
566 | bond_queue_slave_event(slave); | |
f7c7eb7f | 567 | bond_lower_state_changed(slave); |
5d397061 JP |
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 | ||
f307668b MB |
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 | ||
5d397061 JP |
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); | |
f7c7eb7f | 592 | bond_lower_state_changed(tmp); |
5d397061 JP |
593 | tmp->should_notify_link = 0; |
594 | } | |
595 | } | |
69a2338e MS |
596 | } |
597 | ||
eaddcd76 AG |
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) | |
b601fa19 ND |
607 | addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, |
608 | RT_SCOPE_HOST); | |
eaddcd76 AG |
609 | rcu_read_unlock(); |
610 | return addr; | |
611 | } | |
612 | ||
31924325 | 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 | }; | |
4c22400a | 621 | |
5bb9e0b5 | 622 | int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); |
ae46f184 | 623 | netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); |
ec87fd3b | 624 | int bond_create(struct net *net, const char *name); |
4c22400a EB |
625 | int bond_create_sysfs(struct bond_net *net); |
626 | void bond_destroy_sysfs(struct bond_net *net); | |
6151b3d4 | 627 | void bond_prepare_sysfs_group(struct bonding *bond); |
07699f9a | 628 | int bond_sysfs_slave_add(struct slave *slave); |
629 | void bond_sysfs_slave_del(struct slave *slave); | |
33eaf2a6 DA |
630 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, |
631 | struct netlink_ext_ack *extack); | |
a77b5325 | 632 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); |
ee62e868 | 633 | u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); |
2477bc9a | 634 | int bond_set_carrier(struct bonding *bond); |
a77b5325 MW |
635 | void bond_select_active_slave(struct bonding *bond); |
636 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active); | |
f073c7ca TI |
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); | |
d30ee670 | 642 | const char *bond_mode_name(int mode); |
0a2a78c4 JP |
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); | |
752d48b5 | 647 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); |
07699f9a | 648 | const char *bond_slave_link_status(s8 link); |
3e403a77 VF |
649 | struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, |
650 | struct net_device *end_dev, | |
651 | int level); | |
ee637714 MB |
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); | |
ea8ffc08 | 654 | void bond_work_init_all(struct bonding *bond); |
1da177e4 | 655 | |
bd33acc3 AW |
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 | |
662 | static inline void bond_create_proc_entry(struct bonding *bond) | |
663 | { | |
664 | } | |
665 | ||
666 | static inline void bond_remove_proc_entry(struct bonding *bond) | |
667 | { | |
668 | } | |
669 | ||
670 | static inline void bond_create_proc_dir(struct bond_net *bn) | |
671 | { | |
672 | } | |
673 | ||
674 | static inline void bond_destroy_proc_dir(struct bond_net *bn) | |
675 | { | |
676 | } | |
677 | #endif | |
678 | ||
567b871e | 679 | static inline struct slave *bond_slave_has_mac(struct bonding *bond, |
680 | const u8 *mac) | |
681 | { | |
9caff1e7 | 682 | struct list_head *iter; |
567b871e | 683 | struct slave *tmp; |
684 | ||
9caff1e7 | 685 | bond_for_each_slave(bond, tmp, iter) |
567b871e | 686 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) |
687 | return tmp; | |
688 | ||
689 | return NULL; | |
690 | } | |
bd33acc3 | 691 | |
28c71926 | 692 | /* Caller must hold rcu_read_lock() for read */ |
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 | ||
14af9963 VY |
706 | /* Caller must hold rcu_read_lock() for read */ |
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 | ||
87a7b84b VF |
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 | */ | |
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 | ||
b2259672 | 743 | /* exported from bond_main.c */ |
c7d03a00 | 744 | extern unsigned int bond_net_id; |
e97fd7c6 | 745 | extern const struct bond_parm_tbl bond_lacp_tbl[]; |
e97fd7c6 HE |
746 | extern const struct bond_parm_tbl xmit_hashtype_tbl[]; |
747 | extern const struct bond_parm_tbl arp_validate_tbl[]; | |
8599b52e | 748 | extern const struct bond_parm_tbl arp_all_targets_tbl[]; |
e97fd7c6 | 749 | extern const struct bond_parm_tbl fail_over_mac_tbl[]; |
a549952a | 750 | extern const struct bond_parm_tbl pri_reselect_tbl[]; |
b06715b7 HE |
751 | extern struct bond_parm_tbl ad_select_tbl[]; |
752 | ||
0a2a78c4 JP |
753 | /* exported from bond_netlink.c */ |
754 | extern struct rtnl_link_ops bond_link_ops; | |
755 | ||
b9ad3e9f JI |
756 | /* exported from bond_sysfs_slave.c */ |
757 | extern const struct sysfs_ops slave_sysfs_ops; | |
758 | ||
ae46f184 | 759 | static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) |
31aa860e ED |
760 | { |
761 | atomic_long_inc(&dev->tx_dropped); | |
762 | dev_kfree_skb_any(skb); | |
ae46f184 | 763 | return NET_XMIT_DROP; |
31aa860e ED |
764 | } |
765 | ||
1ef8019b | 766 | #endif /* _NET_BONDING_H */ |