Commit | Line | Data |
---|---|---|
613a0141 | 1 | /* SPDX-License-Identifier: GPL-1.0+ */ |
1da177e4 LT |
2 | /* |
3 | * Bond several ethernet interfaces into a Cisco, running 'Etherchannel'. | |
4 | * | |
5 | * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes | |
6 | * NCM: Network and Communications Management, Inc. | |
7 | * | |
8 | * BUT, I'm the one who modified it for ethernet, so: | |
9 | * (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov | |
10 | * | |
1da177e4 LT |
11 | */ |
12 | ||
1ef8019b DM |
13 | #ifndef _NET_BONDING_H |
14 | #define _NET_BONDING_H | |
1da177e4 LT |
15 | |
16 | #include <linux/timer.h> | |
17 | #include <linux/proc_fs.h> | |
18 | #include <linux/if_bonding.h> | |
e843fa50 | 19 | #include <linux/cpumask.h> |
305d552a | 20 | #include <linux/in6.h> |
8a8efa22 | 21 | #include <linux/netpoll.h> |
eaddcd76 | 22 | #include <linux/inetdevice.h> |
567b871e | 23 | #include <linux/etherdevice.h> |
809fa972 | 24 | #include <linux/reciprocal_div.h> |
5f0c5f73 | 25 | #include <linux/if_link.h> |
809fa972 | 26 | |
1ef8019b DM |
27 | #include <net/bond_3ad.h> |
28 | #include <net/bond_alb.h> | |
29 | #include <net/bond_options.h> | |
4e24be01 HL |
30 | #include <net/ipv6.h> |
31 | #include <net/addrconf.h> | |
1da177e4 | 32 | |
1da177e4 | 33 | #define BOND_MAX_ARP_TARGETS 16 |
4e24be01 | 34 | #define BOND_MAX_NS_TARGETS BOND_MAX_ARP_TARGETS |
1da177e4 | 35 | |
fe9d04af | 36 | #define BOND_DEFAULT_MIIMON 100 |
37 | ||
f87fda00 ED |
38 | #ifndef __long_aligned |
39 | #define __long_aligned __attribute__((aligned((sizeof(long))))) | |
40 | #endif | |
1da177e4 | 41 | |
5237ff79 JW |
42 | #define slave_info(bond_dev, slave_dev, fmt, ...) \ |
43 | netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) | |
44 | #define slave_warn(bond_dev, slave_dev, fmt, ...) \ | |
45 | netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) | |
46 | #define slave_dbg(bond_dev, slave_dev, fmt, ...) \ | |
47 | netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) | |
48 | #define slave_err(bond_dev, slave_dev, fmt, ...) \ | |
49 | netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) | |
50 | ||
01844098 VF |
51 | #define BOND_MODE(bond) ((bond)->params.mode) |
52 | ||
dec1e90e | 53 | /* slave list primitives */ |
5a52405a VF |
54 | #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower) |
55 | ||
56 | #define bond_has_slaves(bond) !list_empty(bond_slave_list(bond)) | |
0965a1f3 | 57 | |
dec1e90e | 58 | /* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */ |
59 | #define bond_first_slave(bond) \ | |
5a52405a VF |
60 | (bond_has_slaves(bond) ? \ |
61 | netdev_adjacent_get_private(bond_slave_list(bond)->next) : \ | |
62 | NULL) | |
dec1e90e | 63 | #define bond_last_slave(bond) \ |
5a52405a VF |
64 | (bond_has_slaves(bond) ? \ |
65 | netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \ | |
66 | NULL) | |
dec1e90e | 67 | |
e001bfad | 68 | /* Caller must have rcu_read_lock */ |
69 | #define bond_first_slave_rcu(bond) \ | |
70 | netdev_lower_get_first_private_rcu(bond->dev) | |
71 | ||
5a52405a VF |
72 | #define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond)) |
73 | #define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond)) | |
dec1e90e | 74 | |
1da177e4 | 75 | /** |
dec1e90e | 76 | * bond_for_each_slave - iterate over all slaves |
77 | * @bond: the bond holding this list | |
78 | * @pos: current slave | |
9caff1e7 | 79 | * @iter: list_head * iterator |
1da177e4 | 80 | * |
87163ef9 | 81 | * Caller must hold RTNL |
1da177e4 | 82 | */ |
9caff1e7 VF |
83 | #define bond_for_each_slave(bond, pos, iter) \ |
84 | netdev_for_each_lower_private((bond)->dev, pos, iter) | |
1da177e4 | 85 | |
278b2083 | 86 | /* Caller must have rcu_read_lock */ |
9caff1e7 VF |
87 | #define bond_for_each_slave_rcu(bond, pos, iter) \ |
88 | netdev_for_each_lower_private_rcu((bond)->dev, pos, iter) | |
278b2083 | 89 | |
a3b658cf JW |
90 | #define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ |
91 | NETIF_F_GSO_ESP) | |
a3b658cf | 92 | |
e843fa50 | 93 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fb4fa76a | 94 | extern atomic_t netpoll_block_tx; |
e843fa50 NH |
95 | |
96 | static inline void block_netpoll_tx(void) | |
97 | { | |
fb4fa76a | 98 | atomic_inc(&netpoll_block_tx); |
e843fa50 NH |
99 | } |
100 | ||
101 | static inline void unblock_netpoll_tx(void) | |
102 | { | |
fb4fa76a | 103 | atomic_dec(&netpoll_block_tx); |
e843fa50 NH |
104 | } |
105 | ||
106 | static inline int is_netpoll_tx_blocked(struct net_device *dev) | |
107 | { | |
080e4130 | 108 | if (unlikely(netpoll_tx_running(dev))) |
fb4fa76a | 109 | return atomic_read(&netpoll_block_tx); |
e843fa50 NH |
110 | return 0; |
111 | } | |
112 | #else | |
113 | #define block_netpoll_tx() | |
114 | #define unblock_netpoll_tx() | |
115 | #define is_netpoll_tx_blocked(dev) (0) | |
116 | #endif | |
117 | ||
1da177e4 LT |
118 | struct bond_params { |
119 | int mode; | |
169a3e66 | 120 | int xmit_policy; |
1da177e4 | 121 | int miimon; |
ad246c99 | 122 | u8 num_peer_notif; |
5944b5ab | 123 | u8 missed_max; |
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; |
3a755cd8 | 132 | int lacp_active; |
1da177e4 | 133 | int lacp_fast; |
655f8919 | 134 | unsigned int min_links; |
fd989c83 | 135 | int ad_select; |
1da177e4 | 136 | char primary[IFNAMSIZ]; |
a549952a | 137 | int primary_reselect; |
d3bb52b0 | 138 | __be32 arp_targets[BOND_MAX_ARP_TARGETS]; |
bb1d9123 | 139 | int tx_queues; |
ebd8e497 | 140 | int all_slaves_active; |
c2952c31 | 141 | int resend_igmp; |
7eacd038 | 142 | int lp_interval; |
73958329 | 143 | int packets_per_slave; |
e9f0fb88 | 144 | int tlb_dynamic_lb; |
809fa972 | 145 | struct reciprocal_value reciprocal_packets_per_slave; |
6791e466 | 146 | u16 ad_actor_sys_prio; |
d22a5fc0 | 147 | u16 ad_user_port_key; |
c4caa500 | 148 | #if IS_ENABLED(CONFIG_IPV6) |
4e24be01 | 149 | struct in6_addr ns_targets[BOND_MAX_NS_TARGETS]; |
c4caa500 | 150 | #endif |
240fd405 | 151 | int coupled_control; |
f87fda00 ED |
152 | |
153 | /* 2 bytes of padding : see ether_addr_equal_64bits() */ | |
154 | u8 ad_actor_system[ETH_ALEN + 2]; | |
1da177e4 LT |
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; |
06799a90 | 161 | /* all 4 in jiffies */ |
8e603460 | 162 | unsigned long last_link_up; |
06799a90 | 163 | unsigned long last_tx; |
49f17de7 | 164 | unsigned long last_rx; |
8599b52e | 165 | unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; |
f307668b MB |
166 | s8 link; /* one of BOND_LINK_XXXX */ |
167 | s8 link_new_state; /* one of BOND_LINK_XXXX */ | |
2d7011ca JP |
168 | u8 backup:1, /* indicates backup slave. Value corresponds with |
169 | BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ | |
5e5b0665 | 170 | inactive:1, /* indicates inactive slave */ |
240fd405 | 171 | rx_disabled:1, /* indicates whether slave's Rx is disabled */ |
5d397061 JP |
172 | should_notify:1, /* indicates whether the state changed */ |
173 | should_notify_link:1; /* indicates whether the link changed */ | |
5d30530e | 174 | u8 duplex; |
3158bf7d | 175 | u32 original_mtu; |
1da177e4 | 176 | u32 link_failure_count; |
5d30530e | 177 | u32 speed; |
bb1d9123 | 178 | u16 queue_id; |
faeeb317 | 179 | u8 perm_hwaddr[MAX_ADDR_LEN]; |
0a2ff7cc | 180 | int prio; |
3fdddd85 | 181 | struct ad_slave_info *ad_info; |
1da177e4 | 182 | struct tlb_slave_info tlb_info; |
8a8efa22 AW |
183 | #ifdef CONFIG_NET_POLL_CONTROLLER |
184 | struct netpoll *np; | |
185 | #endif | |
d4859d74 | 186 | struct delayed_work notify_work; |
07699f9a | 187 | struct kobject kobj; |
5f0c5f73 | 188 | struct rtnl_link_stats64 slave_stats; |
1da177e4 LT |
189 | }; |
190 | ||
b9ad3e9f JI |
191 | static inline struct slave *to_slave(struct kobject *kobj) |
192 | { | |
193 | return container_of(kobj, struct slave, kobj); | |
194 | } | |
195 | ||
ee637714 MB |
196 | struct bond_up_slave { |
197 | unsigned int count; | |
198 | struct rcu_head rcu; | |
749db093 | 199 | struct slave *arr[]; |
ee637714 MB |
200 | }; |
201 | ||
b2220cad JV |
202 | /* |
203 | * Link pseudo-state only used internally by monitors | |
204 | */ | |
205 | #define BOND_LINK_NOCHANGE -1 | |
206 | ||
9a560550 TY |
207 | struct bond_ipsec { |
208 | struct list_head list; | |
209 | struct xfrm_state *xs; | |
210 | }; | |
211 | ||
1da177e4 LT |
212 | /* |
213 | * Here are the locking policies for the two bonding locks: | |
1c72cfdc | 214 | * Get rcu_read_lock when reading or RTNL when writing slave list. |
1da177e4 LT |
215 | */ |
216 | struct bonding { | |
e944ef79 | 217 | struct net_device *dev; /* first - useful for panic debug */ |
4740d638 | 218 | struct slave __rcu *curr_active_slave; |
85741718 | 219 | struct slave __rcu *current_arp_slave; |
059b47e8 | 220 | struct slave __rcu *primary_slave; |
6b447e76 MG |
221 | struct bond_up_slave __rcu *usable_slaves; |
222 | struct bond_up_slave __rcu *all_slaves; | |
a549952a | 223 | bool force_primary; |
ae9b15fb | 224 | bool notifier_ctx; |
1da177e4 | 225 | s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ |
de063b70 ED |
226 | int (*recv_probe)(const struct sk_buff *, struct bonding *, |
227 | struct slave *); | |
8c0bc550 NA |
228 | /* mode_lock is used for mode-specific locking needs, currently used by: |
229 | * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and | |
547942ca NA |
230 | * bond_3ad_state_machine_handler() concurrently and also |
231 | * the access to the state machine shared variables. | |
8c0bc550 NA |
232 | * TLB mode (5) - to sync the use and modifications of its hash table |
233 | * ALB mode (6) - to sync the use and modifications of its hash table | |
234 | */ | |
b7435628 | 235 | spinlock_t mode_lock; |
fe30937b | 236 | spinlock_t stats_lock; |
9949e2ef | 237 | u32 send_peer_notif; |
4f5474e7 | 238 | u8 igmp_retrans; |
1da177e4 LT |
239 | #ifdef CONFIG_PROC_FS |
240 | struct proc_dir_entry *proc_entry; | |
241 | char proc_file_name[IFNAMSIZ]; | |
242 | #endif /* CONFIG_PROC_FS */ | |
243 | struct list_head bond_list; | |
848ca918 | 244 | u32 __percpu *rr_tx_counter; |
1da177e4 LT |
245 | struct ad_bond_info ad_info; |
246 | struct alb_bond_info alb_info; | |
247 | struct bond_params params; | |
1b76b316 JV |
248 | struct workqueue_struct *wq; |
249 | struct delayed_work mii_work; | |
250 | struct delayed_work arp_work; | |
251 | struct delayed_work alb_work; | |
252 | struct delayed_work ad_work; | |
5a37e8ca | 253 | struct delayed_work mcast_work; |
ee637714 | 254 | struct delayed_work slave_arr_work; |
f073c7ca | 255 | #ifdef CONFIG_DEBUG_FS |
02582e9b | 256 | /* debugging support via debugfs */ |
f073c7ca TI |
257 | struct dentry *debug_dir; |
258 | #endif /* CONFIG_DEBUG_FS */ | |
5f0c5f73 | 259 | struct rtnl_link_stats64 bond_stats; |
18cb261a | 260 | #ifdef CONFIG_XFRM_OFFLOAD |
9a560550 TY |
261 | struct list_head ipsec_list; |
262 | /* protecting ipsec_list */ | |
2aeeef90 | 263 | struct mutex ipsec_lock; |
18cb261a | 264 | #endif /* CONFIG_XFRM_OFFLOAD */ |
9e2ee5c7 | 265 | struct bpf_prog *xdp_prog; |
1da177e4 LT |
266 | }; |
267 | ||
f1c1775a JP |
268 | #define bond_slave_get_rcu(dev) \ |
269 | ((struct slave *) rcu_dereference(dev->rx_handler_data)) | |
270 | ||
471cb5a3 JP |
271 | #define bond_slave_get_rtnl(dev) \ |
272 | ((struct slave *) rtnl_dereference(dev->rx_handler_data)) | |
273 | ||
69e61133 | 274 | void bond_queue_slave_event(struct slave *slave); |
f7c7eb7f | 275 | void bond_lower_state_changed(struct slave *slave); |
69e61133 | 276 | |
fbd929f2 | 277 | struct bond_vlan_tag { |
278 | __be16 vlan_proto; | |
279 | unsigned short vlan_id; | |
280 | }; | |
281 | ||
a66557c7 | 282 | /* |
1da177e4 LT |
283 | * Returns NULL if the net_device does not belong to any of the bond's slaves |
284 | * | |
285 | * Caller must hold bond lock for read | |
286 | */ | |
4ec952b8 | 287 | static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, |
288 | struct net_device *slave_dev) | |
1da177e4 | 289 | { |
46bb4807 | 290 | return netdev_lower_dev_get_private(bond->dev, slave_dev); |
1da177e4 LT |
291 | } |
292 | ||
cceb904f | 293 | static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) |
1da177e4 | 294 | { |
471cb5a3 | 295 | return slave->bond; |
1da177e4 LT |
296 | } |
297 | ||
d1e2e5cd VF |
298 | static inline bool bond_should_override_tx_queue(struct bonding *bond) |
299 | { | |
01844098 VF |
300 | return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || |
301 | BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; | |
d1e2e5cd VF |
302 | } |
303 | ||
58402054 HE |
304 | static inline bool bond_is_lb(const struct bonding *bond) |
305 | { | |
01844098 VF |
306 | return BOND_MODE(bond) == BOND_MODE_TLB || |
307 | BOND_MODE(bond) == BOND_MODE_ALB; | |
58402054 HE |
308 | } |
309 | ||
ad729bc9 AB |
310 | static inline bool bond_needs_speed_duplex(const struct bonding *bond) |
311 | { | |
312 | return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond); | |
313 | } | |
314 | ||
6b794c1c MB |
315 | static inline bool bond_is_nondyn_tlb(const struct bonding *bond) |
316 | { | |
e79c1055 DB |
317 | return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); |
318 | } | |
319 | ||
320 | static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) | |
321 | { | |
322 | return (BOND_MODE(bond) == BOND_MODE_8023AD || | |
323 | BOND_MODE(bond) == BOND_MODE_XOR || | |
324 | BOND_MODE(bond) == BOND_MODE_TLB || | |
325 | BOND_MODE(bond) == BOND_MODE_ALB); | |
6b794c1c MB |
326 | } |
327 | ||
d7021325 MB |
328 | static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) |
329 | { | |
330 | return (BOND_MODE(bond) == BOND_MODE_8023AD || | |
331 | BOND_MODE(bond) == BOND_MODE_XOR || | |
332 | bond_is_nondyn_tlb(bond)); | |
333 | } | |
334 | ||
267bed77 VF |
335 | static inline bool bond_mode_uses_arp(int mode) |
336 | { | |
337 | return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && | |
338 | mode != BOND_MODE_ALB; | |
339 | } | |
340 | ||
ec0865a9 VF |
341 | static inline bool bond_mode_uses_primary(int mode) |
342 | { | |
343 | return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || | |
344 | mode == BOND_MODE_ALB; | |
345 | } | |
346 | ||
347 | static inline bool bond_uses_primary(struct bonding *bond) | |
348 | { | |
01844098 | 349 | return bond_mode_uses_primary(BOND_MODE(bond)); |
ec0865a9 VF |
350 | } |
351 | ||
e9998695 MB |
352 | static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) |
353 | { | |
aa603467 | 354 | struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave); |
e9998695 MB |
355 | |
356 | return bond_uses_primary(bond) && slave ? slave->dev : NULL; | |
357 | } | |
358 | ||
b6adc610 VF |
359 | static inline bool bond_slave_is_up(struct slave *slave) |
360 | { | |
361 | return netif_running(slave->dev) && netif_carrier_ok(slave->dev); | |
362 | } | |
363 | ||
e30bc066 JP |
364 | static inline void bond_set_active_slave(struct slave *slave) |
365 | { | |
1d3ee88a | 366 | if (slave->backup) { |
367 | slave->backup = 0; | |
69e61133 | 368 | bond_queue_slave_event(slave); |
f7c7eb7f | 369 | bond_lower_state_changed(slave); |
1d3ee88a | 370 | } |
e30bc066 JP |
371 | } |
372 | ||
373 | static inline void bond_set_backup_slave(struct slave *slave) | |
374 | { | |
1d3ee88a | 375 | if (!slave->backup) { |
376 | slave->backup = 1; | |
69e61133 | 377 | bond_queue_slave_event(slave); |
f7c7eb7f | 378 | bond_lower_state_changed(slave); |
1d3ee88a | 379 | } |
e30bc066 JP |
380 | } |
381 | ||
5e5b0665 | 382 | static inline void bond_set_slave_state(struct slave *slave, |
383 | int slave_state, bool notify) | |
384 | { | |
385 | if (slave->backup == slave_state) | |
386 | return; | |
387 | ||
388 | slave->backup = slave_state; | |
389 | if (notify) { | |
f7c7eb7f | 390 | bond_lower_state_changed(slave); |
69e61133 | 391 | bond_queue_slave_event(slave); |
5e5b0665 | 392 | slave->should_notify = 0; |
393 | } else { | |
394 | if (slave->should_notify) | |
395 | slave->should_notify = 0; | |
396 | else | |
397 | slave->should_notify = 1; | |
398 | } | |
399 | } | |
400 | ||
6fde8f03 DT |
401 | static inline void bond_slave_state_change(struct bonding *bond) |
402 | { | |
403 | struct list_head *iter; | |
404 | struct slave *tmp; | |
405 | ||
406 | bond_for_each_slave(bond, tmp, iter) { | |
407 | if (tmp->link == BOND_LINK_UP) | |
408 | bond_set_active_slave(tmp); | |
409 | else if (tmp->link == BOND_LINK_DOWN) | |
410 | bond_set_backup_slave(tmp); | |
411 | } | |
412 | } | |
413 | ||
b0929915 | 414 | static inline void bond_slave_state_notify(struct bonding *bond) |
415 | { | |
416 | struct list_head *iter; | |
417 | struct slave *tmp; | |
418 | ||
419 | bond_for_each_slave(bond, tmp, iter) { | |
420 | if (tmp->should_notify) { | |
f7c7eb7f | 421 | bond_lower_state_changed(tmp); |
b0929915 | 422 | tmp->should_notify = 0; |
423 | } | |
424 | } | |
425 | } | |
426 | ||
e30bc066 JP |
427 | static inline int bond_slave_state(struct slave *slave) |
428 | { | |
429 | return slave->backup; | |
430 | } | |
431 | ||
432 | static inline bool bond_is_active_slave(struct slave *slave) | |
433 | { | |
434 | return !bond_slave_state(slave); | |
435 | } | |
436 | ||
891ab54d VF |
437 | static inline bool bond_slave_can_tx(struct slave *slave) |
438 | { | |
439 | return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && | |
440 | bond_is_active_slave(slave); | |
441 | } | |
442 | ||
eeed992b PM |
443 | static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) |
444 | { | |
445 | struct slave *slave; | |
446 | bool active; | |
447 | ||
448 | rcu_read_lock(); | |
449 | slave = bond_slave_get_rcu(slave_dev); | |
450 | active = bond_is_active_slave(slave); | |
451 | rcu_read_unlock(); | |
452 | ||
453 | return active; | |
454 | } | |
455 | ||
faeeb317 JW |
456 | static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) |
457 | { | |
458 | if (len == ETH_ALEN) { | |
459 | ether_addr_copy(dst, src); | |
460 | return; | |
461 | } | |
462 | ||
463 | memcpy(dst, src, len); | |
464 | } | |
465 | ||
a549952a JP |
466 | #define BOND_PRI_RESELECT_ALWAYS 0 |
467 | #define BOND_PRI_RESELECT_BETTER 1 | |
468 | #define BOND_PRI_RESELECT_FAILURE 2 | |
469 | ||
3915c1e8 JV |
470 | #define BOND_FOM_NONE 0 |
471 | #define BOND_FOM_ACTIVE 1 | |
472 | #define BOND_FOM_FOLLOW 2 | |
473 | ||
8599b52e VF |
474 | #define BOND_ARP_TARGETS_ANY 0 |
475 | #define BOND_ARP_TARGETS_ALL 1 | |
476 | ||
f5b2b966 JV |
477 | #define BOND_ARP_VALIDATE_NONE 0 |
478 | #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) | |
479 | #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) | |
480 | #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ | |
481 | BOND_ARP_VALIDATE_BACKUP) | |
896149ff VF |
482 | #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) |
483 | #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ | |
484 | BOND_ARP_FILTER) | |
485 | #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ | |
486 | BOND_ARP_FILTER) | |
f5b2b966 | 487 | |
5e5b0665 | 488 | #define BOND_SLAVE_NOTIFY_NOW true |
489 | #define BOND_SLAVE_NOTIFY_LATER false | |
490 | ||
079ca7da AB |
491 | static inline int slave_do_arp_validate(struct bonding *bond, |
492 | struct slave *slave) | |
f5b2b966 | 493 | { |
e30bc066 | 494 | return bond->params.arp_validate & (1 << bond_slave_state(slave)); |
f5b2b966 JV |
495 | } |
496 | ||
bedabf90 | 497 | static inline int slave_do_arp_validate_only(struct bonding *bond) |
896149ff VF |
498 | { |
499 | return bond->params.arp_validate & BOND_ARP_FILTER; | |
500 | } | |
501 | ||
2807a9fe VF |
502 | static inline int bond_is_ip_target_ok(__be32 addr) |
503 | { | |
504 | return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); | |
505 | } | |
506 | ||
c4caa500 | 507 | #if IS_ENABLED(CONFIG_IPV6) |
129e3c1b HL |
508 | static inline int bond_is_ip6_target_ok(struct in6_addr *addr) |
509 | { | |
510 | return !ipv6_addr_any(addr) && | |
511 | !ipv6_addr_loopback(addr) && | |
512 | !ipv6_addr_is_multicast(addr); | |
513 | } | |
c4caa500 | 514 | #endif |
129e3c1b | 515 | |
8599b52e VF |
516 | /* Get the oldest arp which we've received on this slave for bond's |
517 | * arp_targets. | |
518 | */ | |
519 | static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, | |
520 | struct slave *slave) | |
521 | { | |
522 | int i = 1; | |
523 | unsigned long ret = slave->target_last_arp_rx[0]; | |
524 | ||
525 | for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) | |
526 | if (time_before(slave->target_last_arp_rx[i], ret)) | |
527 | ret = slave->target_last_arp_rx[i]; | |
528 | ||
529 | return ret; | |
530 | } | |
531 | ||
079ca7da | 532 | static inline unsigned long slave_last_rx(struct bonding *bond, |
f8a8ccd5 | 533 | struct slave *slave) |
f5b2b966 | 534 | { |
9f242738 VF |
535 | if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) |
536 | return slave_oldest_target_arp_rx(bond, slave); | |
f5b2b966 | 537 | |
49f17de7 | 538 | return slave->last_rx; |
f5b2b966 JV |
539 | } |
540 | ||
06799a90 VO |
541 | static inline void slave_update_last_tx(struct slave *slave) |
542 | { | |
543 | WRITE_ONCE(slave->last_tx, jiffies); | |
544 | } | |
545 | ||
546 | static inline unsigned long slave_last_tx(struct slave *slave) | |
547 | { | |
548 | return READ_ONCE(slave->last_tx); | |
549 | } | |
550 | ||
8a8efa22 | 551 | #ifdef CONFIG_NET_POLL_CONTROLLER |
ae46f184 | 552 | static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, |
8a8efa22 AW |
553 | struct sk_buff *skb) |
554 | { | |
ae46f184 | 555 | return netpoll_send_skb(slave->np, skb); |
8a8efa22 AW |
556 | } |
557 | #else | |
ae46f184 | 558 | static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, |
8a8efa22 AW |
559 | struct sk_buff *skb) |
560 | { | |
ae46f184 ED |
561 | BUG(); |
562 | return NETDEV_TX_OK; | |
8a8efa22 AW |
563 | } |
564 | #endif | |
565 | ||
5e5b0665 | 566 | static inline void bond_set_slave_inactive_flags(struct slave *slave, |
567 | bool notify) | |
1da177e4 | 568 | { |
471cb5a3 | 569 | if (!bond_is_lb(slave->bond)) |
5e5b0665 | 570 | bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); |
471cb5a3 | 571 | if (!slave->bond->params.all_slaves_active) |
2d7011ca | 572 | slave->inactive = 1; |
240fd405 AA |
573 | if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) |
574 | slave->rx_disabled = 1; | |
575 | } | |
576 | ||
577 | static inline void bond_set_slave_tx_disabled_flags(struct slave *slave, | |
578 | bool notify) | |
579 | { | |
580 | bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); | |
1da177e4 LT |
581 | } |
582 | ||
5e5b0665 | 583 | static inline void bond_set_slave_active_flags(struct slave *slave, |
584 | bool notify) | |
1da177e4 | 585 | { |
5e5b0665 | 586 | bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); |
2d7011ca | 587 | slave->inactive = 0; |
240fd405 AA |
588 | if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) |
589 | slave->rx_disabled = 0; | |
590 | } | |
591 | ||
592 | static inline void bond_set_slave_rx_enabled_flags(struct slave *slave, | |
593 | bool notify) | |
594 | { | |
595 | slave->rx_disabled = 0; | |
2d7011ca JP |
596 | } |
597 | ||
598 | static inline bool bond_is_slave_inactive(struct slave *slave) | |
599 | { | |
600 | return slave->inactive; | |
1da177e4 LT |
601 | } |
602 | ||
240fd405 AA |
603 | static inline bool bond_is_slave_rx_disabled(struct slave *slave) |
604 | { | |
605 | return slave->rx_disabled; | |
606 | } | |
607 | ||
f307668b MB |
608 | static inline void bond_propose_link_state(struct slave *slave, int state) |
609 | { | |
610 | slave->link_new_state = state; | |
611 | } | |
612 | ||
613 | static inline void bond_commit_link_state(struct slave *slave, bool notify) | |
69a2338e | 614 | { |
1899bb32 | 615 | if (slave->link_new_state == BOND_LINK_NOCHANGE) |
5d397061 JP |
616 | return; |
617 | ||
f307668b | 618 | slave->link = slave->link_new_state; |
5d397061 JP |
619 | if (notify) { |
620 | bond_queue_slave_event(slave); | |
f7c7eb7f | 621 | bond_lower_state_changed(slave); |
5d397061 JP |
622 | slave->should_notify_link = 0; |
623 | } else { | |
624 | if (slave->should_notify_link) | |
625 | slave->should_notify_link = 0; | |
626 | else | |
627 | slave->should_notify_link = 1; | |
628 | } | |
629 | } | |
630 | ||
f307668b MB |
631 | static inline void bond_set_slave_link_state(struct slave *slave, int state, |
632 | bool notify) | |
633 | { | |
634 | bond_propose_link_state(slave, state); | |
635 | bond_commit_link_state(slave, notify); | |
636 | } | |
637 | ||
5d397061 JP |
638 | static inline void bond_slave_link_notify(struct bonding *bond) |
639 | { | |
640 | struct list_head *iter; | |
641 | struct slave *tmp; | |
642 | ||
643 | bond_for_each_slave(bond, tmp, iter) { | |
644 | if (tmp->should_notify_link) { | |
645 | bond_queue_slave_event(tmp); | |
f7c7eb7f | 646 | bond_lower_state_changed(tmp); |
5d397061 JP |
647 | tmp->should_notify_link = 0; |
648 | } | |
649 | } | |
69a2338e MS |
650 | } |
651 | ||
eaddcd76 AG |
652 | static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) |
653 | { | |
654 | struct in_device *in_dev; | |
655 | __be32 addr = 0; | |
656 | ||
657 | rcu_read_lock(); | |
658 | in_dev = __in_dev_get_rcu(dev); | |
659 | ||
660 | if (in_dev) | |
b601fa19 ND |
661 | addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, |
662 | RT_SCOPE_HOST); | |
eaddcd76 AG |
663 | rcu_read_unlock(); |
664 | return addr; | |
665 | } | |
666 | ||
31924325 | 667 | struct bond_net { |
668 | struct net *net; /* Associated network namespace */ | |
669 | struct list_head dev_list; | |
670 | #ifdef CONFIG_PROC_FS | |
671 | struct proc_dir_entry *proc_dir; | |
672 | #endif | |
673 | struct class_attribute class_attr_bonding_masters; | |
674 | }; | |
4c22400a | 675 | |
4e24be01 | 676 | int bond_rcv_validate(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); |
ae46f184 | 677 | netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); |
ec87fd3b | 678 | int bond_create(struct net *net, const char *name); |
4c22400a EB |
679 | int bond_create_sysfs(struct bond_net *net); |
680 | void bond_destroy_sysfs(struct bond_net *net); | |
6151b3d4 | 681 | void bond_prepare_sysfs_group(struct bonding *bond); |
07699f9a | 682 | int bond_sysfs_slave_add(struct slave *slave); |
683 | void bond_sysfs_slave_del(struct slave *slave); | |
cb9e6e58 | 684 | void bond_xdp_set_features(struct net_device *bond_dev); |
33eaf2a6 DA |
685 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, |
686 | struct netlink_ext_ack *extack); | |
a77b5325 | 687 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); |
ee62e868 | 688 | u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); |
2477bc9a | 689 | int bond_set_carrier(struct bonding *bond); |
a77b5325 MW |
690 | void bond_select_active_slave(struct bonding *bond); |
691 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active); | |
f073c7ca TI |
692 | void bond_create_debugfs(void); |
693 | void bond_destroy_debugfs(void); | |
694 | void bond_debug_register(struct bonding *bond); | |
695 | void bond_debug_unregister(struct bonding *bond); | |
696 | void bond_debug_reregister(struct bonding *bond); | |
d30ee670 | 697 | const char *bond_mode_name(int mode); |
0a2a78c4 JP |
698 | void bond_setup(struct net_device *bond_dev); |
699 | unsigned int bond_get_num_tx_queues(void); | |
700 | int bond_netlink_init(void); | |
701 | void bond_netlink_fini(void); | |
752d48b5 | 702 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); |
07699f9a | 703 | const char *bond_slave_link_status(s8 link); |
3e403a77 VF |
704 | struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, |
705 | struct net_device *end_dev, | |
706 | int level); | |
ee637714 MB |
707 | int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); |
708 | void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); | |
ea8ffc08 | 709 | void bond_work_init_all(struct bonding *bond); |
1da177e4 | 710 | |
bd33acc3 AW |
711 | #ifdef CONFIG_PROC_FS |
712 | void bond_create_proc_entry(struct bonding *bond); | |
713 | void bond_remove_proc_entry(struct bonding *bond); | |
714 | void bond_create_proc_dir(struct bond_net *bn); | |
715 | void bond_destroy_proc_dir(struct bond_net *bn); | |
716 | #else | |
717 | static inline void bond_create_proc_entry(struct bonding *bond) | |
718 | { | |
719 | } | |
720 | ||
721 | static inline void bond_remove_proc_entry(struct bonding *bond) | |
722 | { | |
723 | } | |
724 | ||
725 | static inline void bond_create_proc_dir(struct bond_net *bn) | |
726 | { | |
727 | } | |
728 | ||
729 | static inline void bond_destroy_proc_dir(struct bond_net *bn) | |
730 | { | |
731 | } | |
732 | #endif | |
733 | ||
567b871e | 734 | static inline struct slave *bond_slave_has_mac(struct bonding *bond, |
735 | const u8 *mac) | |
736 | { | |
9caff1e7 | 737 | struct list_head *iter; |
567b871e | 738 | struct slave *tmp; |
739 | ||
9caff1e7 | 740 | bond_for_each_slave(bond, tmp, iter) |
567b871e | 741 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) |
742 | return tmp; | |
743 | ||
744 | return NULL; | |
745 | } | |
bd33acc3 | 746 | |
14af9963 | 747 | /* Caller must hold rcu_read_lock() for read */ |
e74216b8 | 748 | static inline bool bond_slave_has_mac_rcu(struct bonding *bond, const u8 *mac) |
14af9963 VY |
749 | { |
750 | struct list_head *iter; | |
751 | struct slave *tmp; | |
14af9963 VY |
752 | |
753 | bond_for_each_slave_rcu(bond, tmp, iter) | |
754 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) | |
755 | return true; | |
14af9963 VY |
756 | return false; |
757 | } | |
758 | ||
87a7b84b VF |
759 | /* Check if the ip is present in arp ip list, or first free slot if ip == 0 |
760 | * Returns -1 if not found, index if found | |
761 | */ | |
762 | static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) | |
763 | { | |
764 | int i; | |
765 | ||
766 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) | |
767 | if (targets[i] == ip) | |
768 | return i; | |
769 | else if (targets[i] == 0) | |
770 | break; | |
771 | ||
772 | return -1; | |
773 | } | |
774 | ||
c4caa500 | 775 | #if IS_ENABLED(CONFIG_IPV6) |
4e24be01 HL |
776 | static inline int bond_get_targets_ip6(struct in6_addr *targets, struct in6_addr *ip) |
777 | { | |
4598380f | 778 | struct in6_addr mcaddr; |
4e24be01 HL |
779 | int i; |
780 | ||
4598380f HL |
781 | for (i = 0; i < BOND_MAX_NS_TARGETS; i++) { |
782 | addrconf_addr_solict_mult(&targets[i], &mcaddr); | |
783 | if ((ipv6_addr_equal(&targets[i], ip)) || | |
784 | (ipv6_addr_equal(&mcaddr, ip))) | |
4e24be01 HL |
785 | return i; |
786 | else if (ipv6_addr_any(&targets[i])) | |
787 | break; | |
4598380f | 788 | } |
4e24be01 HL |
789 | |
790 | return -1; | |
791 | } | |
c4caa500 | 792 | #endif |
4e24be01 | 793 | |
b2259672 | 794 | /* exported from bond_main.c */ |
c7d03a00 | 795 | extern unsigned int bond_net_id; |
b06715b7 | 796 | |
0a2a78c4 JP |
797 | /* exported from bond_netlink.c */ |
798 | extern struct rtnl_link_ops bond_link_ops; | |
799 | ||
b9ad3e9f JI |
800 | /* exported from bond_sysfs_slave.c */ |
801 | extern const struct sysfs_ops slave_sysfs_ops; | |
802 | ||
1d9a143e BP |
803 | /* exported from bond_3ad.c */ |
804 | extern const u8 lacpdu_mcast_addr[]; | |
805 | ||
ae46f184 | 806 | static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) |
31aa860e | 807 | { |
625788b5 | 808 | dev_core_stats_tx_dropped_inc(dev); |
31aa860e | 809 | dev_kfree_skb_any(skb); |
ae46f184 | 810 | return NET_XMIT_DROP; |
31aa860e ED |
811 | } |
812 | ||
1ef8019b | 813 | #endif /* _NET_BONDING_H */ |