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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 | #ifdef CONFIG_XFRM_OFFLOAD |
90 | #define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ | |
91 | NETIF_F_GSO_ESP) | |
92 | #endif /* CONFIG_XFRM_OFFLOAD */ | |
93 | ||
e843fa50 | 94 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fb4fa76a | 95 | extern atomic_t netpoll_block_tx; |
e843fa50 NH |
96 | |
97 | static inline void block_netpoll_tx(void) | |
98 | { | |
fb4fa76a | 99 | atomic_inc(&netpoll_block_tx); |
e843fa50 NH |
100 | } |
101 | ||
102 | static inline void unblock_netpoll_tx(void) | |
103 | { | |
fb4fa76a | 104 | atomic_dec(&netpoll_block_tx); |
e843fa50 NH |
105 | } |
106 | ||
107 | static inline int is_netpoll_tx_blocked(struct net_device *dev) | |
108 | { | |
080e4130 | 109 | if (unlikely(netpoll_tx_running(dev))) |
fb4fa76a | 110 | return atomic_read(&netpoll_block_tx); |
e843fa50 NH |
111 | return 0; |
112 | } | |
113 | #else | |
114 | #define block_netpoll_tx() | |
115 | #define unblock_netpoll_tx() | |
116 | #define is_netpoll_tx_blocked(dev) (0) | |
117 | #endif | |
118 | ||
1da177e4 LT |
119 | struct bond_params { |
120 | int mode; | |
169a3e66 | 121 | int xmit_policy; |
1da177e4 | 122 | int miimon; |
ad246c99 | 123 | u8 num_peer_notif; |
1da177e4 | 124 | int arp_interval; |
f5b2b966 | 125 | int arp_validate; |
8599b52e | 126 | int arp_all_targets; |
1da177e4 | 127 | int use_carrier; |
dd957c57 | 128 | int fail_over_mac; |
1da177e4 LT |
129 | int updelay; |
130 | int downdelay; | |
07a4ddec | 131 | int peer_notif_delay; |
1da177e4 | 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; |
6791e466 | 145 | u16 ad_actor_sys_prio; |
d22a5fc0 | 146 | u16 ad_user_port_key; |
f87fda00 ED |
147 | |
148 | /* 2 bytes of padding : see ether_addr_equal_64bits() */ | |
149 | u8 ad_actor_system[ETH_ALEN + 2]; | |
1da177e4 LT |
150 | }; |
151 | ||
12479f9a MW |
152 | struct bond_parm_tbl { |
153 | char *modename; | |
154 | int mode; | |
155 | }; | |
156 | ||
1da177e4 | 157 | struct slave { |
e944ef79 | 158 | struct net_device *dev; /* first - useful for panic debug */ |
35d48903 | 159 | struct bonding *bond; /* our master */ |
8bb5f96b | 160 | int delay; |
8e603460 VF |
161 | /* all three in jiffies */ |
162 | unsigned long last_link_up; | |
49f17de7 | 163 | unsigned long last_rx; |
8599b52e | 164 | unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; |
f307668b MB |
165 | s8 link; /* one of BOND_LINK_XXXX */ |
166 | s8 link_new_state; /* one of BOND_LINK_XXXX */ | |
2d7011ca JP |
167 | u8 backup:1, /* indicates backup slave. Value corresponds with |
168 | BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ | |
5e5b0665 | 169 | inactive:1, /* indicates inactive slave */ |
5d397061 JP |
170 | should_notify:1, /* indicates whether the state changed */ |
171 | should_notify_link:1; /* indicates whether the link changed */ | |
5d30530e | 172 | u8 duplex; |
3158bf7d | 173 | u32 original_mtu; |
1da177e4 | 174 | u32 link_failure_count; |
5d30530e | 175 | u32 speed; |
bb1d9123 | 176 | u16 queue_id; |
faeeb317 | 177 | u8 perm_hwaddr[MAX_ADDR_LEN]; |
3fdddd85 | 178 | struct ad_slave_info *ad_info; |
1da177e4 | 179 | struct tlb_slave_info tlb_info; |
8a8efa22 AW |
180 | #ifdef CONFIG_NET_POLL_CONTROLLER |
181 | struct netpoll *np; | |
182 | #endif | |
d4859d74 | 183 | struct delayed_work notify_work; |
07699f9a | 184 | struct kobject kobj; |
5f0c5f73 | 185 | struct rtnl_link_stats64 slave_stats; |
1da177e4 LT |
186 | }; |
187 | ||
ee637714 MB |
188 | struct bond_up_slave { |
189 | unsigned int count; | |
190 | struct rcu_head rcu; | |
749db093 | 191 | struct slave *arr[]; |
ee637714 MB |
192 | }; |
193 | ||
b2220cad JV |
194 | /* |
195 | * Link pseudo-state only used internally by monitors | |
196 | */ | |
197 | #define BOND_LINK_NOCHANGE -1 | |
198 | ||
1da177e4 LT |
199 | /* |
200 | * Here are the locking policies for the two bonding locks: | |
1c72cfdc | 201 | * Get rcu_read_lock when reading or RTNL when writing slave list. |
1da177e4 LT |
202 | */ |
203 | struct bonding { | |
e944ef79 | 204 | struct net_device *dev; /* first - useful for panic debug */ |
4740d638 | 205 | struct slave __rcu *curr_active_slave; |
85741718 | 206 | struct slave __rcu *current_arp_slave; |
059b47e8 | 207 | struct slave __rcu *primary_slave; |
6b447e76 MG |
208 | struct bond_up_slave __rcu *usable_slaves; |
209 | struct bond_up_slave __rcu *all_slaves; | |
a549952a | 210 | bool force_primary; |
1da177e4 | 211 | s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ |
de063b70 ED |
212 | int (*recv_probe)(const struct sk_buff *, struct bonding *, |
213 | struct slave *); | |
8c0bc550 NA |
214 | /* mode_lock is used for mode-specific locking needs, currently used by: |
215 | * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and | |
547942ca NA |
216 | * bond_3ad_state_machine_handler() concurrently and also |
217 | * the access to the state machine shared variables. | |
8c0bc550 NA |
218 | * TLB mode (5) - to sync the use and modifications of its hash table |
219 | * ALB mode (6) - to sync the use and modifications of its hash table | |
220 | */ | |
b7435628 | 221 | spinlock_t mode_lock; |
fe30937b | 222 | spinlock_t stats_lock; |
ad246c99 | 223 | u8 send_peer_notif; |
4f5474e7 | 224 | u8 igmp_retrans; |
1da177e4 LT |
225 | #ifdef CONFIG_PROC_FS |
226 | struct proc_dir_entry *proc_entry; | |
227 | char proc_file_name[IFNAMSIZ]; | |
228 | #endif /* CONFIG_PROC_FS */ | |
229 | struct list_head bond_list; | |
73958329 | 230 | u32 rr_tx_counter; |
1da177e4 LT |
231 | struct ad_bond_info ad_info; |
232 | struct alb_bond_info alb_info; | |
233 | struct bond_params params; | |
1b76b316 JV |
234 | struct workqueue_struct *wq; |
235 | struct delayed_work mii_work; | |
236 | struct delayed_work arp_work; | |
237 | struct delayed_work alb_work; | |
238 | struct delayed_work ad_work; | |
5a37e8ca | 239 | struct delayed_work mcast_work; |
ee637714 | 240 | struct delayed_work slave_arr_work; |
f073c7ca | 241 | #ifdef CONFIG_DEBUG_FS |
02582e9b | 242 | /* debugging support via debugfs */ |
f073c7ca TI |
243 | struct dentry *debug_dir; |
244 | #endif /* CONFIG_DEBUG_FS */ | |
5f0c5f73 | 245 | struct rtnl_link_stats64 bond_stats; |
18cb261a JW |
246 | #ifdef CONFIG_XFRM_OFFLOAD |
247 | struct xfrm_state *xs; | |
248 | #endif /* CONFIG_XFRM_OFFLOAD */ | |
1da177e4 LT |
249 | }; |
250 | ||
f1c1775a JP |
251 | #define bond_slave_get_rcu(dev) \ |
252 | ((struct slave *) rcu_dereference(dev->rx_handler_data)) | |
253 | ||
471cb5a3 JP |
254 | #define bond_slave_get_rtnl(dev) \ |
255 | ((struct slave *) rtnl_dereference(dev->rx_handler_data)) | |
256 | ||
69e61133 | 257 | void bond_queue_slave_event(struct slave *slave); |
f7c7eb7f | 258 | void bond_lower_state_changed(struct slave *slave); |
69e61133 | 259 | |
fbd929f2 | 260 | struct bond_vlan_tag { |
261 | __be16 vlan_proto; | |
262 | unsigned short vlan_id; | |
263 | }; | |
264 | ||
1da177e4 LT |
265 | /** |
266 | * Returns NULL if the net_device does not belong to any of the bond's slaves | |
267 | * | |
268 | * Caller must hold bond lock for read | |
269 | */ | |
4ec952b8 | 270 | static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, |
271 | struct net_device *slave_dev) | |
1da177e4 | 272 | { |
46bb4807 | 273 | return netdev_lower_dev_get_private(bond->dev, slave_dev); |
1da177e4 LT |
274 | } |
275 | ||
cceb904f | 276 | static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) |
1da177e4 | 277 | { |
471cb5a3 | 278 | return slave->bond; |
1da177e4 LT |
279 | } |
280 | ||
d1e2e5cd VF |
281 | static inline bool bond_should_override_tx_queue(struct bonding *bond) |
282 | { | |
01844098 VF |
283 | return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || |
284 | BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; | |
d1e2e5cd VF |
285 | } |
286 | ||
58402054 HE |
287 | static inline bool bond_is_lb(const struct bonding *bond) |
288 | { | |
01844098 VF |
289 | return BOND_MODE(bond) == BOND_MODE_TLB || |
290 | BOND_MODE(bond) == BOND_MODE_ALB; | |
58402054 HE |
291 | } |
292 | ||
ad729bc9 AB |
293 | static inline bool bond_needs_speed_duplex(const struct bonding *bond) |
294 | { | |
295 | return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond); | |
296 | } | |
297 | ||
6b794c1c MB |
298 | static inline bool bond_is_nondyn_tlb(const struct bonding *bond) |
299 | { | |
e79c1055 DB |
300 | return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); |
301 | } | |
302 | ||
303 | static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) | |
304 | { | |
305 | return (BOND_MODE(bond) == BOND_MODE_8023AD || | |
306 | BOND_MODE(bond) == BOND_MODE_XOR || | |
307 | BOND_MODE(bond) == BOND_MODE_TLB || | |
308 | BOND_MODE(bond) == BOND_MODE_ALB); | |
6b794c1c MB |
309 | } |
310 | ||
d7021325 MB |
311 | static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) |
312 | { | |
313 | return (BOND_MODE(bond) == BOND_MODE_8023AD || | |
314 | BOND_MODE(bond) == BOND_MODE_XOR || | |
315 | bond_is_nondyn_tlb(bond)); | |
316 | } | |
317 | ||
267bed77 VF |
318 | static inline bool bond_mode_uses_arp(int mode) |
319 | { | |
320 | return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && | |
321 | mode != BOND_MODE_ALB; | |
322 | } | |
323 | ||
ec0865a9 VF |
324 | static inline bool bond_mode_uses_primary(int mode) |
325 | { | |
326 | return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || | |
327 | mode == BOND_MODE_ALB; | |
328 | } | |
329 | ||
330 | static inline bool bond_uses_primary(struct bonding *bond) | |
331 | { | |
01844098 | 332 | return bond_mode_uses_primary(BOND_MODE(bond)); |
ec0865a9 VF |
333 | } |
334 | ||
e9998695 MB |
335 | static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) |
336 | { | |
337 | struct slave *slave = rcu_dereference(bond->curr_active_slave); | |
338 | ||
339 | return bond_uses_primary(bond) && slave ? slave->dev : NULL; | |
340 | } | |
341 | ||
b6adc610 VF |
342 | static inline bool bond_slave_is_up(struct slave *slave) |
343 | { | |
344 | return netif_running(slave->dev) && netif_carrier_ok(slave->dev); | |
345 | } | |
346 | ||
e30bc066 JP |
347 | static inline void bond_set_active_slave(struct slave *slave) |
348 | { | |
1d3ee88a | 349 | if (slave->backup) { |
350 | slave->backup = 0; | |
69e61133 | 351 | bond_queue_slave_event(slave); |
f7c7eb7f | 352 | bond_lower_state_changed(slave); |
1d3ee88a | 353 | } |
e30bc066 JP |
354 | } |
355 | ||
356 | static inline void bond_set_backup_slave(struct slave *slave) | |
357 | { | |
1d3ee88a | 358 | if (!slave->backup) { |
359 | slave->backup = 1; | |
69e61133 | 360 | bond_queue_slave_event(slave); |
f7c7eb7f | 361 | bond_lower_state_changed(slave); |
1d3ee88a | 362 | } |
e30bc066 JP |
363 | } |
364 | ||
5e5b0665 | 365 | static inline void bond_set_slave_state(struct slave *slave, |
366 | int slave_state, bool notify) | |
367 | { | |
368 | if (slave->backup == slave_state) | |
369 | return; | |
370 | ||
371 | slave->backup = slave_state; | |
372 | if (notify) { | |
f7c7eb7f | 373 | bond_lower_state_changed(slave); |
69e61133 | 374 | bond_queue_slave_event(slave); |
5e5b0665 | 375 | slave->should_notify = 0; |
376 | } else { | |
377 | if (slave->should_notify) | |
378 | slave->should_notify = 0; | |
379 | else | |
380 | slave->should_notify = 1; | |
381 | } | |
382 | } | |
383 | ||
6fde8f03 DT |
384 | static inline void bond_slave_state_change(struct bonding *bond) |
385 | { | |
386 | struct list_head *iter; | |
387 | struct slave *tmp; | |
388 | ||
389 | bond_for_each_slave(bond, tmp, iter) { | |
390 | if (tmp->link == BOND_LINK_UP) | |
391 | bond_set_active_slave(tmp); | |
392 | else if (tmp->link == BOND_LINK_DOWN) | |
393 | bond_set_backup_slave(tmp); | |
394 | } | |
395 | } | |
396 | ||
b0929915 | 397 | static inline void bond_slave_state_notify(struct bonding *bond) |
398 | { | |
399 | struct list_head *iter; | |
400 | struct slave *tmp; | |
401 | ||
402 | bond_for_each_slave(bond, tmp, iter) { | |
403 | if (tmp->should_notify) { | |
f7c7eb7f | 404 | bond_lower_state_changed(tmp); |
b0929915 | 405 | tmp->should_notify = 0; |
406 | } | |
407 | } | |
408 | } | |
409 | ||
e30bc066 JP |
410 | static inline int bond_slave_state(struct slave *slave) |
411 | { | |
412 | return slave->backup; | |
413 | } | |
414 | ||
415 | static inline bool bond_is_active_slave(struct slave *slave) | |
416 | { | |
417 | return !bond_slave_state(slave); | |
418 | } | |
419 | ||
891ab54d VF |
420 | static inline bool bond_slave_can_tx(struct slave *slave) |
421 | { | |
422 | return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && | |
423 | bond_is_active_slave(slave); | |
424 | } | |
425 | ||
eeed992b PM |
426 | static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) |
427 | { | |
428 | struct slave *slave; | |
429 | bool active; | |
430 | ||
431 | rcu_read_lock(); | |
432 | slave = bond_slave_get_rcu(slave_dev); | |
433 | active = bond_is_active_slave(slave); | |
434 | rcu_read_unlock(); | |
435 | ||
436 | return active; | |
437 | } | |
438 | ||
faeeb317 JW |
439 | static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) |
440 | { | |
441 | if (len == ETH_ALEN) { | |
442 | ether_addr_copy(dst, src); | |
443 | return; | |
444 | } | |
445 | ||
446 | memcpy(dst, src, len); | |
447 | } | |
448 | ||
a549952a JP |
449 | #define BOND_PRI_RESELECT_ALWAYS 0 |
450 | #define BOND_PRI_RESELECT_BETTER 1 | |
451 | #define BOND_PRI_RESELECT_FAILURE 2 | |
452 | ||
3915c1e8 JV |
453 | #define BOND_FOM_NONE 0 |
454 | #define BOND_FOM_ACTIVE 1 | |
455 | #define BOND_FOM_FOLLOW 2 | |
456 | ||
8599b52e VF |
457 | #define BOND_ARP_TARGETS_ANY 0 |
458 | #define BOND_ARP_TARGETS_ALL 1 | |
459 | ||
f5b2b966 JV |
460 | #define BOND_ARP_VALIDATE_NONE 0 |
461 | #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) | |
462 | #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) | |
463 | #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ | |
464 | BOND_ARP_VALIDATE_BACKUP) | |
896149ff VF |
465 | #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) |
466 | #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ | |
467 | BOND_ARP_FILTER) | |
468 | #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ | |
469 | BOND_ARP_FILTER) | |
f5b2b966 | 470 | |
5e5b0665 | 471 | #define BOND_SLAVE_NOTIFY_NOW true |
472 | #define BOND_SLAVE_NOTIFY_LATER false | |
473 | ||
079ca7da AB |
474 | static inline int slave_do_arp_validate(struct bonding *bond, |
475 | struct slave *slave) | |
f5b2b966 | 476 | { |
e30bc066 | 477 | return bond->params.arp_validate & (1 << bond_slave_state(slave)); |
f5b2b966 JV |
478 | } |
479 | ||
bedabf90 | 480 | static inline int slave_do_arp_validate_only(struct bonding *bond) |
896149ff VF |
481 | { |
482 | return bond->params.arp_validate & BOND_ARP_FILTER; | |
483 | } | |
484 | ||
2807a9fe VF |
485 | static inline int bond_is_ip_target_ok(__be32 addr) |
486 | { | |
487 | return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); | |
488 | } | |
489 | ||
8599b52e VF |
490 | /* Get the oldest arp which we've received on this slave for bond's |
491 | * arp_targets. | |
492 | */ | |
493 | static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, | |
494 | struct slave *slave) | |
495 | { | |
496 | int i = 1; | |
497 | unsigned long ret = slave->target_last_arp_rx[0]; | |
498 | ||
499 | for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) | |
500 | if (time_before(slave->target_last_arp_rx[i], ret)) | |
501 | ret = slave->target_last_arp_rx[i]; | |
502 | ||
503 | return ret; | |
504 | } | |
505 | ||
079ca7da | 506 | static inline unsigned long slave_last_rx(struct bonding *bond, |
f8a8ccd5 | 507 | struct slave *slave) |
f5b2b966 | 508 | { |
9f242738 VF |
509 | if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) |
510 | return slave_oldest_target_arp_rx(bond, slave); | |
f5b2b966 | 511 | |
49f17de7 | 512 | return slave->last_rx; |
f5b2b966 JV |
513 | } |
514 | ||
8a8efa22 | 515 | #ifdef CONFIG_NET_POLL_CONTROLLER |
ae46f184 | 516 | static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, |
8a8efa22 AW |
517 | struct sk_buff *skb) |
518 | { | |
ae46f184 | 519 | return netpoll_send_skb(slave->np, skb); |
8a8efa22 AW |
520 | } |
521 | #else | |
ae46f184 | 522 | static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, |
8a8efa22 AW |
523 | struct sk_buff *skb) |
524 | { | |
ae46f184 ED |
525 | BUG(); |
526 | return NETDEV_TX_OK; | |
8a8efa22 AW |
527 | } |
528 | #endif | |
529 | ||
5e5b0665 | 530 | static inline void bond_set_slave_inactive_flags(struct slave *slave, |
531 | bool notify) | |
1da177e4 | 532 | { |
471cb5a3 | 533 | if (!bond_is_lb(slave->bond)) |
5e5b0665 | 534 | bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); |
471cb5a3 | 535 | if (!slave->bond->params.all_slaves_active) |
2d7011ca | 536 | slave->inactive = 1; |
1da177e4 LT |
537 | } |
538 | ||
5e5b0665 | 539 | static inline void bond_set_slave_active_flags(struct slave *slave, |
540 | bool notify) | |
1da177e4 | 541 | { |
5e5b0665 | 542 | bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); |
2d7011ca JP |
543 | slave->inactive = 0; |
544 | } | |
545 | ||
546 | static inline bool bond_is_slave_inactive(struct slave *slave) | |
547 | { | |
548 | return slave->inactive; | |
1da177e4 LT |
549 | } |
550 | ||
f307668b MB |
551 | static inline void bond_propose_link_state(struct slave *slave, int state) |
552 | { | |
553 | slave->link_new_state = state; | |
554 | } | |
555 | ||
556 | static inline void bond_commit_link_state(struct slave *slave, bool notify) | |
69a2338e | 557 | { |
1899bb32 | 558 | if (slave->link_new_state == BOND_LINK_NOCHANGE) |
5d397061 JP |
559 | return; |
560 | ||
f307668b | 561 | slave->link = slave->link_new_state; |
5d397061 JP |
562 | if (notify) { |
563 | bond_queue_slave_event(slave); | |
f7c7eb7f | 564 | bond_lower_state_changed(slave); |
5d397061 JP |
565 | slave->should_notify_link = 0; |
566 | } else { | |
567 | if (slave->should_notify_link) | |
568 | slave->should_notify_link = 0; | |
569 | else | |
570 | slave->should_notify_link = 1; | |
571 | } | |
572 | } | |
573 | ||
f307668b MB |
574 | static inline void bond_set_slave_link_state(struct slave *slave, int state, |
575 | bool notify) | |
576 | { | |
577 | bond_propose_link_state(slave, state); | |
578 | bond_commit_link_state(slave, notify); | |
579 | } | |
580 | ||
5d397061 JP |
581 | static inline void bond_slave_link_notify(struct bonding *bond) |
582 | { | |
583 | struct list_head *iter; | |
584 | struct slave *tmp; | |
585 | ||
586 | bond_for_each_slave(bond, tmp, iter) { | |
587 | if (tmp->should_notify_link) { | |
588 | bond_queue_slave_event(tmp); | |
f7c7eb7f | 589 | bond_lower_state_changed(tmp); |
5d397061 JP |
590 | tmp->should_notify_link = 0; |
591 | } | |
592 | } | |
69a2338e MS |
593 | } |
594 | ||
eaddcd76 AG |
595 | static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) |
596 | { | |
597 | struct in_device *in_dev; | |
598 | __be32 addr = 0; | |
599 | ||
600 | rcu_read_lock(); | |
601 | in_dev = __in_dev_get_rcu(dev); | |
602 | ||
603 | if (in_dev) | |
b601fa19 ND |
604 | addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, |
605 | RT_SCOPE_HOST); | |
eaddcd76 AG |
606 | rcu_read_unlock(); |
607 | return addr; | |
608 | } | |
609 | ||
31924325 | 610 | struct bond_net { |
611 | struct net *net; /* Associated network namespace */ | |
612 | struct list_head dev_list; | |
613 | #ifdef CONFIG_PROC_FS | |
614 | struct proc_dir_entry *proc_dir; | |
615 | #endif | |
616 | struct class_attribute class_attr_bonding_masters; | |
617 | }; | |
4c22400a | 618 | |
5bb9e0b5 | 619 | int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); |
ae46f184 | 620 | netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); |
ec87fd3b | 621 | int bond_create(struct net *net, const char *name); |
4c22400a EB |
622 | int bond_create_sysfs(struct bond_net *net); |
623 | void bond_destroy_sysfs(struct bond_net *net); | |
6151b3d4 | 624 | void bond_prepare_sysfs_group(struct bonding *bond); |
07699f9a | 625 | int bond_sysfs_slave_add(struct slave *slave); |
626 | void bond_sysfs_slave_del(struct slave *slave); | |
33eaf2a6 DA |
627 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, |
628 | struct netlink_ext_ack *extack); | |
a77b5325 | 629 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); |
ee62e868 | 630 | u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); |
2477bc9a | 631 | int bond_set_carrier(struct bonding *bond); |
a77b5325 MW |
632 | void bond_select_active_slave(struct bonding *bond); |
633 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active); | |
f073c7ca TI |
634 | void bond_create_debugfs(void); |
635 | void bond_destroy_debugfs(void); | |
636 | void bond_debug_register(struct bonding *bond); | |
637 | void bond_debug_unregister(struct bonding *bond); | |
638 | void bond_debug_reregister(struct bonding *bond); | |
d30ee670 | 639 | const char *bond_mode_name(int mode); |
0a2a78c4 JP |
640 | void bond_setup(struct net_device *bond_dev); |
641 | unsigned int bond_get_num_tx_queues(void); | |
642 | int bond_netlink_init(void); | |
643 | void bond_netlink_fini(void); | |
752d48b5 | 644 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); |
07699f9a | 645 | const char *bond_slave_link_status(s8 link); |
3e403a77 VF |
646 | struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, |
647 | struct net_device *end_dev, | |
648 | int level); | |
ee637714 MB |
649 | int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); |
650 | void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); | |
ea8ffc08 | 651 | void bond_work_init_all(struct bonding *bond); |
1da177e4 | 652 | |
bd33acc3 AW |
653 | #ifdef CONFIG_PROC_FS |
654 | void bond_create_proc_entry(struct bonding *bond); | |
655 | void bond_remove_proc_entry(struct bonding *bond); | |
656 | void bond_create_proc_dir(struct bond_net *bn); | |
657 | void bond_destroy_proc_dir(struct bond_net *bn); | |
658 | #else | |
659 | static inline void bond_create_proc_entry(struct bonding *bond) | |
660 | { | |
661 | } | |
662 | ||
663 | static inline void bond_remove_proc_entry(struct bonding *bond) | |
664 | { | |
665 | } | |
666 | ||
667 | static inline void bond_create_proc_dir(struct bond_net *bn) | |
668 | { | |
669 | } | |
670 | ||
671 | static inline void bond_destroy_proc_dir(struct bond_net *bn) | |
672 | { | |
673 | } | |
674 | #endif | |
675 | ||
567b871e | 676 | static inline struct slave *bond_slave_has_mac(struct bonding *bond, |
677 | const u8 *mac) | |
678 | { | |
9caff1e7 | 679 | struct list_head *iter; |
567b871e | 680 | struct slave *tmp; |
681 | ||
9caff1e7 | 682 | bond_for_each_slave(bond, tmp, iter) |
567b871e | 683 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) |
684 | return tmp; | |
685 | ||
686 | return NULL; | |
687 | } | |
bd33acc3 | 688 | |
28c71926 | 689 | /* Caller must hold rcu_read_lock() for read */ |
690 | static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond, | |
691 | const u8 *mac) | |
692 | { | |
693 | struct list_head *iter; | |
694 | struct slave *tmp; | |
695 | ||
696 | bond_for_each_slave_rcu(bond, tmp, iter) | |
697 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) | |
698 | return tmp; | |
699 | ||
700 | return NULL; | |
701 | } | |
702 | ||
14af9963 VY |
703 | /* Caller must hold rcu_read_lock() for read */ |
704 | static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) | |
705 | { | |
706 | struct list_head *iter; | |
707 | struct slave *tmp; | |
708 | struct netdev_hw_addr *ha; | |
709 | ||
710 | bond_for_each_slave_rcu(bond, tmp, iter) | |
711 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) | |
712 | return true; | |
713 | ||
714 | if (netdev_uc_empty(bond->dev)) | |
715 | return false; | |
716 | ||
717 | netdev_for_each_uc_addr(ha, bond->dev) | |
718 | if (ether_addr_equal_64bits(mac, ha->addr)) | |
719 | return true; | |
720 | ||
721 | return false; | |
722 | } | |
723 | ||
87a7b84b VF |
724 | /* Check if the ip is present in arp ip list, or first free slot if ip == 0 |
725 | * Returns -1 if not found, index if found | |
726 | */ | |
727 | static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) | |
728 | { | |
729 | int i; | |
730 | ||
731 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) | |
732 | if (targets[i] == ip) | |
733 | return i; | |
734 | else if (targets[i] == 0) | |
735 | break; | |
736 | ||
737 | return -1; | |
738 | } | |
739 | ||
b2259672 | 740 | /* exported from bond_main.c */ |
c7d03a00 | 741 | extern unsigned int bond_net_id; |
e97fd7c6 | 742 | extern const struct bond_parm_tbl bond_lacp_tbl[]; |
e97fd7c6 HE |
743 | extern const struct bond_parm_tbl xmit_hashtype_tbl[]; |
744 | extern const struct bond_parm_tbl arp_validate_tbl[]; | |
8599b52e | 745 | extern const struct bond_parm_tbl arp_all_targets_tbl[]; |
e97fd7c6 | 746 | extern const struct bond_parm_tbl fail_over_mac_tbl[]; |
a549952a | 747 | extern const struct bond_parm_tbl pri_reselect_tbl[]; |
b06715b7 HE |
748 | extern struct bond_parm_tbl ad_select_tbl[]; |
749 | ||
0a2a78c4 JP |
750 | /* exported from bond_netlink.c */ |
751 | extern struct rtnl_link_ops bond_link_ops; | |
752 | ||
ae46f184 | 753 | static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) |
31aa860e ED |
754 | { |
755 | atomic_long_inc(&dev->tx_dropped); | |
756 | dev_kfree_skb_any(skb); | |
ae46f184 | 757 | return NET_XMIT_DROP; |
31aa860e ED |
758 | } |
759 | ||
1ef8019b | 760 | #endif /* _NET_BONDING_H */ |