Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Bond several ethernet interfaces into a Cisco, running 'Etherchannel'. | |
3 | * | |
4 | * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes | |
5 | * NCM: Network and Communications Management, Inc. | |
6 | * | |
7 | * BUT, I'm the one who modified it for ethernet, so: | |
8 | * (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov | |
9 | * | |
10 | * This software may be used and distributed according to the terms | |
11 | * of the GNU Public License, incorporated herein by reference. | |
12 | * | |
1da177e4 LT |
13 | */ |
14 | ||
1ef8019b DM |
15 | #ifndef _NET_BONDING_H |
16 | #define _NET_BONDING_H | |
1da177e4 LT |
17 | |
18 | #include <linux/timer.h> | |
19 | #include <linux/proc_fs.h> | |
20 | #include <linux/if_bonding.h> | |
e843fa50 | 21 | #include <linux/cpumask.h> |
305d552a | 22 | #include <linux/in6.h> |
8a8efa22 | 23 | #include <linux/netpoll.h> |
eaddcd76 | 24 | #include <linux/inetdevice.h> |
567b871e | 25 | #include <linux/etherdevice.h> |
809fa972 | 26 | #include <linux/reciprocal_div.h> |
5f0c5f73 | 27 | #include <linux/if_link.h> |
809fa972 | 28 | |
1ef8019b DM |
29 | #include <net/bond_3ad.h> |
30 | #include <net/bond_alb.h> | |
31 | #include <net/bond_options.h> | |
4e24be01 HL |
32 | #include <net/ipv6.h> |
33 | #include <net/addrconf.h> | |
1da177e4 | 34 | |
1da177e4 | 35 | #define BOND_MAX_ARP_TARGETS 16 |
4e24be01 | 36 | #define BOND_MAX_NS_TARGETS BOND_MAX_ARP_TARGETS |
1da177e4 | 37 | |
fe9d04af | 38 | #define BOND_DEFAULT_MIIMON 100 |
39 | ||
f87fda00 ED |
40 | #ifndef __long_aligned |
41 | #define __long_aligned __attribute__((aligned((sizeof(long))))) | |
42 | #endif | |
1da177e4 | 43 | |
5237ff79 JW |
44 | #define slave_info(bond_dev, slave_dev, fmt, ...) \ |
45 | netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) | |
46 | #define slave_warn(bond_dev, slave_dev, fmt, ...) \ | |
47 | netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) | |
48 | #define slave_dbg(bond_dev, slave_dev, fmt, ...) \ | |
49 | netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) | |
50 | #define slave_err(bond_dev, slave_dev, fmt, ...) \ | |
51 | netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) | |
52 | ||
01844098 VF |
53 | #define BOND_MODE(bond) ((bond)->params.mode) |
54 | ||
dec1e90e | 55 | /* slave list primitives */ |
5a52405a VF |
56 | #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower) |
57 | ||
58 | #define bond_has_slaves(bond) !list_empty(bond_slave_list(bond)) | |
0965a1f3 | 59 | |
dec1e90e | 60 | /* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */ |
61 | #define bond_first_slave(bond) \ | |
5a52405a VF |
62 | (bond_has_slaves(bond) ? \ |
63 | netdev_adjacent_get_private(bond_slave_list(bond)->next) : \ | |
64 | NULL) | |
dec1e90e | 65 | #define bond_last_slave(bond) \ |
5a52405a VF |
66 | (bond_has_slaves(bond) ? \ |
67 | netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \ | |
68 | NULL) | |
dec1e90e | 69 | |
e001bfad | 70 | /* Caller must have rcu_read_lock */ |
71 | #define bond_first_slave_rcu(bond) \ | |
72 | netdev_lower_get_first_private_rcu(bond->dev) | |
73 | ||
5a52405a VF |
74 | #define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond)) |
75 | #define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond)) | |
dec1e90e | 76 | |
1da177e4 | 77 | /** |
dec1e90e | 78 | * bond_for_each_slave - iterate over all slaves |
79 | * @bond: the bond holding this list | |
80 | * @pos: current slave | |
9caff1e7 | 81 | * @iter: list_head * iterator |
1da177e4 | 82 | * |
87163ef9 | 83 | * Caller must hold RTNL |
1da177e4 | 84 | */ |
9caff1e7 VF |
85 | #define bond_for_each_slave(bond, pos, iter) \ |
86 | netdev_for_each_lower_private((bond)->dev, pos, iter) | |
1da177e4 | 87 | |
278b2083 | 88 | /* Caller must have rcu_read_lock */ |
9caff1e7 VF |
89 | #define bond_for_each_slave_rcu(bond, pos, iter) \ |
90 | netdev_for_each_lower_private_rcu((bond)->dev, pos, iter) | |
278b2083 | 91 | |
a3b658cf JW |
92 | #define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ |
93 | NETIF_F_GSO_ESP) | |
a3b658cf | 94 | |
e843fa50 | 95 | #ifdef CONFIG_NET_POLL_CONTROLLER |
fb4fa76a | 96 | extern atomic_t netpoll_block_tx; |
e843fa50 NH |
97 | |
98 | static inline void block_netpoll_tx(void) | |
99 | { | |
fb4fa76a | 100 | atomic_inc(&netpoll_block_tx); |
e843fa50 NH |
101 | } |
102 | ||
103 | static inline void unblock_netpoll_tx(void) | |
104 | { | |
fb4fa76a | 105 | atomic_dec(&netpoll_block_tx); |
e843fa50 NH |
106 | } |
107 | ||
108 | static inline int is_netpoll_tx_blocked(struct net_device *dev) | |
109 | { | |
080e4130 | 110 | if (unlikely(netpoll_tx_running(dev))) |
fb4fa76a | 111 | return atomic_read(&netpoll_block_tx); |
e843fa50 NH |
112 | return 0; |
113 | } | |
114 | #else | |
115 | #define block_netpoll_tx() | |
116 | #define unblock_netpoll_tx() | |
117 | #define is_netpoll_tx_blocked(dev) (0) | |
118 | #endif | |
119 | ||
1da177e4 LT |
120 | struct bond_params { |
121 | int mode; | |
169a3e66 | 122 | int xmit_policy; |
1da177e4 | 123 | int miimon; |
ad246c99 | 124 | u8 num_peer_notif; |
5944b5ab | 125 | u8 missed_max; |
1da177e4 | 126 | int arp_interval; |
f5b2b966 | 127 | int arp_validate; |
8599b52e | 128 | int arp_all_targets; |
1da177e4 | 129 | int use_carrier; |
dd957c57 | 130 | int fail_over_mac; |
1da177e4 LT |
131 | int updelay; |
132 | int downdelay; | |
07a4ddec | 133 | int peer_notif_delay; |
3a755cd8 | 134 | int lacp_active; |
1da177e4 | 135 | int lacp_fast; |
655f8919 | 136 | unsigned int min_links; |
fd989c83 | 137 | int ad_select; |
1da177e4 | 138 | char primary[IFNAMSIZ]; |
a549952a | 139 | int primary_reselect; |
d3bb52b0 | 140 | __be32 arp_targets[BOND_MAX_ARP_TARGETS]; |
bb1d9123 | 141 | int tx_queues; |
ebd8e497 | 142 | int all_slaves_active; |
c2952c31 | 143 | int resend_igmp; |
7eacd038 | 144 | int lp_interval; |
73958329 | 145 | int packets_per_slave; |
e9f0fb88 | 146 | int tlb_dynamic_lb; |
809fa972 | 147 | struct reciprocal_value reciprocal_packets_per_slave; |
6791e466 | 148 | u16 ad_actor_sys_prio; |
d22a5fc0 | 149 | u16 ad_user_port_key; |
c4caa500 | 150 | #if IS_ENABLED(CONFIG_IPV6) |
4e24be01 | 151 | struct in6_addr ns_targets[BOND_MAX_NS_TARGETS]; |
c4caa500 | 152 | #endif |
f87fda00 ED |
153 | |
154 | /* 2 bytes of padding : see ether_addr_equal_64bits() */ | |
155 | u8 ad_actor_system[ETH_ALEN + 2]; | |
1da177e4 LT |
156 | }; |
157 | ||
1da177e4 | 158 | struct slave { |
e944ef79 | 159 | struct net_device *dev; /* first - useful for panic debug */ |
35d48903 | 160 | struct bonding *bond; /* our master */ |
8bb5f96b | 161 | int delay; |
06799a90 | 162 | /* all 4 in jiffies */ |
8e603460 | 163 | unsigned long last_link_up; |
06799a90 | 164 | unsigned long last_tx; |
49f17de7 | 165 | unsigned long last_rx; |
8599b52e | 166 | unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; |
f307668b MB |
167 | s8 link; /* one of BOND_LINK_XXXX */ |
168 | s8 link_new_state; /* one of BOND_LINK_XXXX */ | |
2d7011ca JP |
169 | u8 backup:1, /* indicates backup slave. Value corresponds with |
170 | BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ | |
5e5b0665 | 171 | inactive:1, /* indicates inactive slave */ |
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; |
1da177e4 | 224 | s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ |
de063b70 ED |
225 | int (*recv_probe)(const struct sk_buff *, struct bonding *, |
226 | struct slave *); | |
8c0bc550 NA |
227 | /* mode_lock is used for mode-specific locking needs, currently used by: |
228 | * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and | |
547942ca NA |
229 | * bond_3ad_state_machine_handler() concurrently and also |
230 | * the access to the state machine shared variables. | |
8c0bc550 NA |
231 | * TLB mode (5) - to sync the use and modifications of its hash table |
232 | * ALB mode (6) - to sync the use and modifications of its hash table | |
233 | */ | |
b7435628 | 234 | spinlock_t mode_lock; |
fe30937b | 235 | spinlock_t stats_lock; |
ad246c99 | 236 | u8 send_peer_notif; |
4f5474e7 | 237 | u8 igmp_retrans; |
1da177e4 LT |
238 | #ifdef CONFIG_PROC_FS |
239 | struct proc_dir_entry *proc_entry; | |
240 | char proc_file_name[IFNAMSIZ]; | |
241 | #endif /* CONFIG_PROC_FS */ | |
242 | struct list_head bond_list; | |
848ca918 | 243 | u32 __percpu *rr_tx_counter; |
1da177e4 LT |
244 | struct ad_bond_info ad_info; |
245 | struct alb_bond_info alb_info; | |
246 | struct bond_params params; | |
1b76b316 JV |
247 | struct workqueue_struct *wq; |
248 | struct delayed_work mii_work; | |
249 | struct delayed_work arp_work; | |
250 | struct delayed_work alb_work; | |
251 | struct delayed_work ad_work; | |
5a37e8ca | 252 | struct delayed_work mcast_work; |
ee637714 | 253 | struct delayed_work slave_arr_work; |
f073c7ca | 254 | #ifdef CONFIG_DEBUG_FS |
02582e9b | 255 | /* debugging support via debugfs */ |
f073c7ca TI |
256 | struct dentry *debug_dir; |
257 | #endif /* CONFIG_DEBUG_FS */ | |
5f0c5f73 | 258 | struct rtnl_link_stats64 bond_stats; |
18cb261a | 259 | #ifdef CONFIG_XFRM_OFFLOAD |
9a560550 TY |
260 | struct list_head ipsec_list; |
261 | /* protecting ipsec_list */ | |
262 | spinlock_t ipsec_lock; | |
18cb261a | 263 | #endif /* CONFIG_XFRM_OFFLOAD */ |
9e2ee5c7 | 264 | struct bpf_prog *xdp_prog; |
1da177e4 LT |
265 | }; |
266 | ||
f1c1775a JP |
267 | #define bond_slave_get_rcu(dev) \ |
268 | ((struct slave *) rcu_dereference(dev->rx_handler_data)) | |
269 | ||
471cb5a3 JP |
270 | #define bond_slave_get_rtnl(dev) \ |
271 | ((struct slave *) rtnl_dereference(dev->rx_handler_data)) | |
272 | ||
69e61133 | 273 | void bond_queue_slave_event(struct slave *slave); |
f7c7eb7f | 274 | void bond_lower_state_changed(struct slave *slave); |
69e61133 | 275 | |
fbd929f2 | 276 | struct bond_vlan_tag { |
277 | __be16 vlan_proto; | |
278 | unsigned short vlan_id; | |
279 | }; | |
280 | ||
1da177e4 LT |
281 | /** |
282 | * Returns NULL if the net_device does not belong to any of the bond's slaves | |
283 | * | |
284 | * Caller must hold bond lock for read | |
285 | */ | |
4ec952b8 | 286 | static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, |
287 | struct net_device *slave_dev) | |
1da177e4 | 288 | { |
46bb4807 | 289 | return netdev_lower_dev_get_private(bond->dev, slave_dev); |
1da177e4 LT |
290 | } |
291 | ||
cceb904f | 292 | static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) |
1da177e4 | 293 | { |
471cb5a3 | 294 | return slave->bond; |
1da177e4 LT |
295 | } |
296 | ||
d1e2e5cd VF |
297 | static inline bool bond_should_override_tx_queue(struct bonding *bond) |
298 | { | |
01844098 VF |
299 | return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || |
300 | BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; | |
d1e2e5cd VF |
301 | } |
302 | ||
58402054 HE |
303 | static inline bool bond_is_lb(const struct bonding *bond) |
304 | { | |
01844098 VF |
305 | return BOND_MODE(bond) == BOND_MODE_TLB || |
306 | BOND_MODE(bond) == BOND_MODE_ALB; | |
58402054 HE |
307 | } |
308 | ||
ad729bc9 AB |
309 | static inline bool bond_needs_speed_duplex(const struct bonding *bond) |
310 | { | |
311 | return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond); | |
312 | } | |
313 | ||
6b794c1c MB |
314 | static inline bool bond_is_nondyn_tlb(const struct bonding *bond) |
315 | { | |
e79c1055 DB |
316 | return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); |
317 | } | |
318 | ||
319 | static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) | |
320 | { | |
321 | return (BOND_MODE(bond) == BOND_MODE_8023AD || | |
322 | BOND_MODE(bond) == BOND_MODE_XOR || | |
323 | BOND_MODE(bond) == BOND_MODE_TLB || | |
324 | BOND_MODE(bond) == BOND_MODE_ALB); | |
6b794c1c MB |
325 | } |
326 | ||
d7021325 MB |
327 | static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) |
328 | { | |
329 | return (BOND_MODE(bond) == BOND_MODE_8023AD || | |
330 | BOND_MODE(bond) == BOND_MODE_XOR || | |
331 | bond_is_nondyn_tlb(bond)); | |
332 | } | |
333 | ||
267bed77 VF |
334 | static inline bool bond_mode_uses_arp(int mode) |
335 | { | |
336 | return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && | |
337 | mode != BOND_MODE_ALB; | |
338 | } | |
339 | ||
ec0865a9 VF |
340 | static inline bool bond_mode_uses_primary(int mode) |
341 | { | |
342 | return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || | |
343 | mode == BOND_MODE_ALB; | |
344 | } | |
345 | ||
346 | static inline bool bond_uses_primary(struct bonding *bond) | |
347 | { | |
01844098 | 348 | return bond_mode_uses_primary(BOND_MODE(bond)); |
ec0865a9 VF |
349 | } |
350 | ||
e9998695 MB |
351 | static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) |
352 | { | |
aa603467 | 353 | struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave); |
e9998695 MB |
354 | |
355 | return bond_uses_primary(bond) && slave ? slave->dev : NULL; | |
356 | } | |
357 | ||
b6adc610 VF |
358 | static inline bool bond_slave_is_up(struct slave *slave) |
359 | { | |
360 | return netif_running(slave->dev) && netif_carrier_ok(slave->dev); | |
361 | } | |
362 | ||
e30bc066 JP |
363 | static inline void bond_set_active_slave(struct slave *slave) |
364 | { | |
1d3ee88a | 365 | if (slave->backup) { |
366 | slave->backup = 0; | |
69e61133 | 367 | bond_queue_slave_event(slave); |
f7c7eb7f | 368 | bond_lower_state_changed(slave); |
1d3ee88a | 369 | } |
e30bc066 JP |
370 | } |
371 | ||
372 | static inline void bond_set_backup_slave(struct slave *slave) | |
373 | { | |
1d3ee88a | 374 | if (!slave->backup) { |
375 | slave->backup = 1; | |
69e61133 | 376 | bond_queue_slave_event(slave); |
f7c7eb7f | 377 | bond_lower_state_changed(slave); |
1d3ee88a | 378 | } |
e30bc066 JP |
379 | } |
380 | ||
5e5b0665 | 381 | static inline void bond_set_slave_state(struct slave *slave, |
382 | int slave_state, bool notify) | |
383 | { | |
384 | if (slave->backup == slave_state) | |
385 | return; | |
386 | ||
387 | slave->backup = slave_state; | |
388 | if (notify) { | |
f7c7eb7f | 389 | bond_lower_state_changed(slave); |
69e61133 | 390 | bond_queue_slave_event(slave); |
5e5b0665 | 391 | slave->should_notify = 0; |
392 | } else { | |
393 | if (slave->should_notify) | |
394 | slave->should_notify = 0; | |
395 | else | |
396 | slave->should_notify = 1; | |
397 | } | |
398 | } | |
399 | ||
6fde8f03 DT |
400 | static inline void bond_slave_state_change(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->link == BOND_LINK_UP) | |
407 | bond_set_active_slave(tmp); | |
408 | else if (tmp->link == BOND_LINK_DOWN) | |
409 | bond_set_backup_slave(tmp); | |
410 | } | |
411 | } | |
412 | ||
b0929915 | 413 | static inline void bond_slave_state_notify(struct bonding *bond) |
414 | { | |
415 | struct list_head *iter; | |
416 | struct slave *tmp; | |
417 | ||
418 | bond_for_each_slave(bond, tmp, iter) { | |
419 | if (tmp->should_notify) { | |
f7c7eb7f | 420 | bond_lower_state_changed(tmp); |
b0929915 | 421 | tmp->should_notify = 0; |
422 | } | |
423 | } | |
424 | } | |
425 | ||
e30bc066 JP |
426 | static inline int bond_slave_state(struct slave *slave) |
427 | { | |
428 | return slave->backup; | |
429 | } | |
430 | ||
431 | static inline bool bond_is_active_slave(struct slave *slave) | |
432 | { | |
433 | return !bond_slave_state(slave); | |
434 | } | |
435 | ||
891ab54d VF |
436 | static inline bool bond_slave_can_tx(struct slave *slave) |
437 | { | |
438 | return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && | |
439 | bond_is_active_slave(slave); | |
440 | } | |
441 | ||
eeed992b PM |
442 | static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) |
443 | { | |
444 | struct slave *slave; | |
445 | bool active; | |
446 | ||
447 | rcu_read_lock(); | |
448 | slave = bond_slave_get_rcu(slave_dev); | |
449 | active = bond_is_active_slave(slave); | |
450 | rcu_read_unlock(); | |
451 | ||
452 | return active; | |
453 | } | |
454 | ||
faeeb317 JW |
455 | static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) |
456 | { | |
457 | if (len == ETH_ALEN) { | |
458 | ether_addr_copy(dst, src); | |
459 | return; | |
460 | } | |
461 | ||
462 | memcpy(dst, src, len); | |
463 | } | |
464 | ||
a549952a JP |
465 | #define BOND_PRI_RESELECT_ALWAYS 0 |
466 | #define BOND_PRI_RESELECT_BETTER 1 | |
467 | #define BOND_PRI_RESELECT_FAILURE 2 | |
468 | ||
3915c1e8 JV |
469 | #define BOND_FOM_NONE 0 |
470 | #define BOND_FOM_ACTIVE 1 | |
471 | #define BOND_FOM_FOLLOW 2 | |
472 | ||
8599b52e VF |
473 | #define BOND_ARP_TARGETS_ANY 0 |
474 | #define BOND_ARP_TARGETS_ALL 1 | |
475 | ||
f5b2b966 JV |
476 | #define BOND_ARP_VALIDATE_NONE 0 |
477 | #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) | |
478 | #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) | |
479 | #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ | |
480 | BOND_ARP_VALIDATE_BACKUP) | |
896149ff VF |
481 | #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) |
482 | #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ | |
483 | BOND_ARP_FILTER) | |
484 | #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ | |
485 | BOND_ARP_FILTER) | |
f5b2b966 | 486 | |
5e5b0665 | 487 | #define BOND_SLAVE_NOTIFY_NOW true |
488 | #define BOND_SLAVE_NOTIFY_LATER false | |
489 | ||
079ca7da AB |
490 | static inline int slave_do_arp_validate(struct bonding *bond, |
491 | struct slave *slave) | |
f5b2b966 | 492 | { |
e30bc066 | 493 | return bond->params.arp_validate & (1 << bond_slave_state(slave)); |
f5b2b966 JV |
494 | } |
495 | ||
bedabf90 | 496 | static inline int slave_do_arp_validate_only(struct bonding *bond) |
896149ff VF |
497 | { |
498 | return bond->params.arp_validate & BOND_ARP_FILTER; | |
499 | } | |
500 | ||
2807a9fe VF |
501 | static inline int bond_is_ip_target_ok(__be32 addr) |
502 | { | |
503 | return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); | |
504 | } | |
505 | ||
c4caa500 | 506 | #if IS_ENABLED(CONFIG_IPV6) |
129e3c1b HL |
507 | static inline int bond_is_ip6_target_ok(struct in6_addr *addr) |
508 | { | |
509 | return !ipv6_addr_any(addr) && | |
510 | !ipv6_addr_loopback(addr) && | |
511 | !ipv6_addr_is_multicast(addr); | |
512 | } | |
c4caa500 | 513 | #endif |
129e3c1b | 514 | |
8599b52e VF |
515 | /* Get the oldest arp which we've received on this slave for bond's |
516 | * arp_targets. | |
517 | */ | |
518 | static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, | |
519 | struct slave *slave) | |
520 | { | |
521 | int i = 1; | |
522 | unsigned long ret = slave->target_last_arp_rx[0]; | |
523 | ||
524 | for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) | |
525 | if (time_before(slave->target_last_arp_rx[i], ret)) | |
526 | ret = slave->target_last_arp_rx[i]; | |
527 | ||
528 | return ret; | |
529 | } | |
530 | ||
079ca7da | 531 | static inline unsigned long slave_last_rx(struct bonding *bond, |
f8a8ccd5 | 532 | struct slave *slave) |
f5b2b966 | 533 | { |
9f242738 VF |
534 | if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) |
535 | return slave_oldest_target_arp_rx(bond, slave); | |
f5b2b966 | 536 | |
49f17de7 | 537 | return slave->last_rx; |
f5b2b966 JV |
538 | } |
539 | ||
06799a90 VO |
540 | static inline void slave_update_last_tx(struct slave *slave) |
541 | { | |
542 | WRITE_ONCE(slave->last_tx, jiffies); | |
543 | } | |
544 | ||
545 | static inline unsigned long slave_last_tx(struct slave *slave) | |
546 | { | |
547 | return READ_ONCE(slave->last_tx); | |
548 | } | |
549 | ||
8a8efa22 | 550 | #ifdef CONFIG_NET_POLL_CONTROLLER |
ae46f184 | 551 | static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, |
8a8efa22 AW |
552 | struct sk_buff *skb) |
553 | { | |
ae46f184 | 554 | return netpoll_send_skb(slave->np, skb); |
8a8efa22 AW |
555 | } |
556 | #else | |
ae46f184 | 557 | static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, |
8a8efa22 AW |
558 | struct sk_buff *skb) |
559 | { | |
ae46f184 ED |
560 | BUG(); |
561 | return NETDEV_TX_OK; | |
8a8efa22 AW |
562 | } |
563 | #endif | |
564 | ||
5e5b0665 | 565 | static inline void bond_set_slave_inactive_flags(struct slave *slave, |
566 | bool notify) | |
1da177e4 | 567 | { |
471cb5a3 | 568 | if (!bond_is_lb(slave->bond)) |
5e5b0665 | 569 | bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); |
471cb5a3 | 570 | if (!slave->bond->params.all_slaves_active) |
2d7011ca | 571 | slave->inactive = 1; |
1da177e4 LT |
572 | } |
573 | ||
5e5b0665 | 574 | static inline void bond_set_slave_active_flags(struct slave *slave, |
575 | bool notify) | |
1da177e4 | 576 | { |
5e5b0665 | 577 | bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); |
2d7011ca JP |
578 | slave->inactive = 0; |
579 | } | |
580 | ||
581 | static inline bool bond_is_slave_inactive(struct slave *slave) | |
582 | { | |
583 | return slave->inactive; | |
1da177e4 LT |
584 | } |
585 | ||
f307668b MB |
586 | static inline void bond_propose_link_state(struct slave *slave, int state) |
587 | { | |
588 | slave->link_new_state = state; | |
589 | } | |
590 | ||
591 | static inline void bond_commit_link_state(struct slave *slave, bool notify) | |
69a2338e | 592 | { |
1899bb32 | 593 | if (slave->link_new_state == BOND_LINK_NOCHANGE) |
5d397061 JP |
594 | return; |
595 | ||
f307668b | 596 | slave->link = slave->link_new_state; |
5d397061 JP |
597 | if (notify) { |
598 | bond_queue_slave_event(slave); | |
f7c7eb7f | 599 | bond_lower_state_changed(slave); |
5d397061 JP |
600 | slave->should_notify_link = 0; |
601 | } else { | |
602 | if (slave->should_notify_link) | |
603 | slave->should_notify_link = 0; | |
604 | else | |
605 | slave->should_notify_link = 1; | |
606 | } | |
607 | } | |
608 | ||
f307668b MB |
609 | static inline void bond_set_slave_link_state(struct slave *slave, int state, |
610 | bool notify) | |
611 | { | |
612 | bond_propose_link_state(slave, state); | |
613 | bond_commit_link_state(slave, notify); | |
614 | } | |
615 | ||
5d397061 JP |
616 | static inline void bond_slave_link_notify(struct bonding *bond) |
617 | { | |
618 | struct list_head *iter; | |
619 | struct slave *tmp; | |
620 | ||
621 | bond_for_each_slave(bond, tmp, iter) { | |
622 | if (tmp->should_notify_link) { | |
623 | bond_queue_slave_event(tmp); | |
f7c7eb7f | 624 | bond_lower_state_changed(tmp); |
5d397061 JP |
625 | tmp->should_notify_link = 0; |
626 | } | |
627 | } | |
69a2338e MS |
628 | } |
629 | ||
eaddcd76 AG |
630 | static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) |
631 | { | |
632 | struct in_device *in_dev; | |
633 | __be32 addr = 0; | |
634 | ||
635 | rcu_read_lock(); | |
636 | in_dev = __in_dev_get_rcu(dev); | |
637 | ||
638 | if (in_dev) | |
b601fa19 ND |
639 | addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, |
640 | RT_SCOPE_HOST); | |
eaddcd76 AG |
641 | rcu_read_unlock(); |
642 | return addr; | |
643 | } | |
644 | ||
31924325 | 645 | struct bond_net { |
646 | struct net *net; /* Associated network namespace */ | |
647 | struct list_head dev_list; | |
648 | #ifdef CONFIG_PROC_FS | |
649 | struct proc_dir_entry *proc_dir; | |
650 | #endif | |
651 | struct class_attribute class_attr_bonding_masters; | |
652 | }; | |
4c22400a | 653 | |
4e24be01 | 654 | int bond_rcv_validate(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); |
ae46f184 | 655 | netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); |
ec87fd3b | 656 | int bond_create(struct net *net, const char *name); |
4c22400a EB |
657 | int bond_create_sysfs(struct bond_net *net); |
658 | void bond_destroy_sysfs(struct bond_net *net); | |
6151b3d4 | 659 | void bond_prepare_sysfs_group(struct bonding *bond); |
07699f9a | 660 | int bond_sysfs_slave_add(struct slave *slave); |
661 | void bond_sysfs_slave_del(struct slave *slave); | |
cb9e6e58 | 662 | void bond_xdp_set_features(struct net_device *bond_dev); |
33eaf2a6 DA |
663 | int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, |
664 | struct netlink_ext_ack *extack); | |
a77b5325 | 665 | int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); |
ee62e868 | 666 | u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); |
2477bc9a | 667 | int bond_set_carrier(struct bonding *bond); |
a77b5325 MW |
668 | void bond_select_active_slave(struct bonding *bond); |
669 | void bond_change_active_slave(struct bonding *bond, struct slave *new_active); | |
f073c7ca TI |
670 | void bond_create_debugfs(void); |
671 | void bond_destroy_debugfs(void); | |
672 | void bond_debug_register(struct bonding *bond); | |
673 | void bond_debug_unregister(struct bonding *bond); | |
674 | void bond_debug_reregister(struct bonding *bond); | |
d30ee670 | 675 | const char *bond_mode_name(int mode); |
0a2a78c4 JP |
676 | void bond_setup(struct net_device *bond_dev); |
677 | unsigned int bond_get_num_tx_queues(void); | |
678 | int bond_netlink_init(void); | |
679 | void bond_netlink_fini(void); | |
752d48b5 | 680 | struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); |
07699f9a | 681 | const char *bond_slave_link_status(s8 link); |
3e403a77 VF |
682 | struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, |
683 | struct net_device *end_dev, | |
684 | int level); | |
ee637714 MB |
685 | int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); |
686 | void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); | |
ea8ffc08 | 687 | void bond_work_init_all(struct bonding *bond); |
1da177e4 | 688 | |
bd33acc3 AW |
689 | #ifdef CONFIG_PROC_FS |
690 | void bond_create_proc_entry(struct bonding *bond); | |
691 | void bond_remove_proc_entry(struct bonding *bond); | |
692 | void bond_create_proc_dir(struct bond_net *bn); | |
693 | void bond_destroy_proc_dir(struct bond_net *bn); | |
694 | #else | |
695 | static inline void bond_create_proc_entry(struct bonding *bond) | |
696 | { | |
697 | } | |
698 | ||
699 | static inline void bond_remove_proc_entry(struct bonding *bond) | |
700 | { | |
701 | } | |
702 | ||
703 | static inline void bond_create_proc_dir(struct bond_net *bn) | |
704 | { | |
705 | } | |
706 | ||
707 | static inline void bond_destroy_proc_dir(struct bond_net *bn) | |
708 | { | |
709 | } | |
710 | #endif | |
711 | ||
567b871e | 712 | static inline struct slave *bond_slave_has_mac(struct bonding *bond, |
713 | const u8 *mac) | |
714 | { | |
9caff1e7 | 715 | struct list_head *iter; |
567b871e | 716 | struct slave *tmp; |
717 | ||
9caff1e7 | 718 | bond_for_each_slave(bond, tmp, iter) |
567b871e | 719 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) |
720 | return tmp; | |
721 | ||
722 | return NULL; | |
723 | } | |
bd33acc3 | 724 | |
14af9963 VY |
725 | /* Caller must hold rcu_read_lock() for read */ |
726 | static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) | |
727 | { | |
728 | struct list_head *iter; | |
729 | struct slave *tmp; | |
730 | struct netdev_hw_addr *ha; | |
731 | ||
732 | bond_for_each_slave_rcu(bond, tmp, iter) | |
733 | if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) | |
734 | return true; | |
735 | ||
736 | if (netdev_uc_empty(bond->dev)) | |
737 | return false; | |
738 | ||
739 | netdev_for_each_uc_addr(ha, bond->dev) | |
740 | if (ether_addr_equal_64bits(mac, ha->addr)) | |
741 | return true; | |
742 | ||
743 | return false; | |
744 | } | |
745 | ||
87a7b84b VF |
746 | /* Check if the ip is present in arp ip list, or first free slot if ip == 0 |
747 | * Returns -1 if not found, index if found | |
748 | */ | |
749 | static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) | |
750 | { | |
751 | int i; | |
752 | ||
753 | for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) | |
754 | if (targets[i] == ip) | |
755 | return i; | |
756 | else if (targets[i] == 0) | |
757 | break; | |
758 | ||
759 | return -1; | |
760 | } | |
761 | ||
c4caa500 | 762 | #if IS_ENABLED(CONFIG_IPV6) |
4e24be01 HL |
763 | static inline int bond_get_targets_ip6(struct in6_addr *targets, struct in6_addr *ip) |
764 | { | |
4598380f | 765 | struct in6_addr mcaddr; |
4e24be01 HL |
766 | int i; |
767 | ||
4598380f HL |
768 | for (i = 0; i < BOND_MAX_NS_TARGETS; i++) { |
769 | addrconf_addr_solict_mult(&targets[i], &mcaddr); | |
770 | if ((ipv6_addr_equal(&targets[i], ip)) || | |
771 | (ipv6_addr_equal(&mcaddr, ip))) | |
4e24be01 HL |
772 | return i; |
773 | else if (ipv6_addr_any(&targets[i])) | |
774 | break; | |
4598380f | 775 | } |
4e24be01 HL |
776 | |
777 | return -1; | |
778 | } | |
c4caa500 | 779 | #endif |
4e24be01 | 780 | |
b2259672 | 781 | /* exported from bond_main.c */ |
c7d03a00 | 782 | extern unsigned int bond_net_id; |
b06715b7 | 783 | |
0a2a78c4 JP |
784 | /* exported from bond_netlink.c */ |
785 | extern struct rtnl_link_ops bond_link_ops; | |
786 | ||
b9ad3e9f JI |
787 | /* exported from bond_sysfs_slave.c */ |
788 | extern const struct sysfs_ops slave_sysfs_ops; | |
789 | ||
1d9a143e BP |
790 | /* exported from bond_3ad.c */ |
791 | extern const u8 lacpdu_mcast_addr[]; | |
792 | ||
ae46f184 | 793 | static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) |
31aa860e | 794 | { |
625788b5 | 795 | dev_core_stats_tx_dropped_inc(dev); |
31aa860e | 796 | dev_kfree_skb_any(skb); |
ae46f184 | 797 | return NET_XMIT_DROP; |
31aa860e ED |
798 | } |
799 | ||
1ef8019b | 800 | #endif /* _NET_BONDING_H */ |