Linux 6.11-rc7
[linux-block.git] / include / net / bonding.h
CommitLineData
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 94extern atomic_t netpoll_block_tx;
e843fa50
NH
95
96static inline void block_netpoll_tx(void)
97{
fb4fa76a 98 atomic_inc(&netpoll_block_tx);
e843fa50
NH
99}
100
101static inline void unblock_netpoll_tx(void)
102{
fb4fa76a 103 atomic_dec(&netpoll_block_tx);
e843fa50
NH
104}
105
106static 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
118struct 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 157struct 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
191static inline struct slave *to_slave(struct kobject *kobj)
192{
193 return container_of(kobj, struct slave, kobj);
194}
195
ee637714
MB
196struct 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
207struct 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 */
216struct 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 274void bond_queue_slave_event(struct slave *slave);
f7c7eb7f 275void bond_lower_state_changed(struct slave *slave);
69e61133 276
fbd929f2 277struct 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 287static 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 293static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
1da177e4 294{
471cb5a3 295 return slave->bond;
1da177e4
LT
296}
297
d1e2e5cd
VF
298static 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
304static 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
310static 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
315static 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
320static 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
328static 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
335static 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
341static 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
347static 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
352static 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
359static 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
364static 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
373static 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 382static 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
401static 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 414static 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
427static inline int bond_slave_state(struct slave *slave)
428{
429 return slave->backup;
430}
431
432static inline bool bond_is_active_slave(struct slave *slave)
433{
434 return !bond_slave_state(slave);
435}
436
891ab54d
VF
437static 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
443static 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
456static 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
491static 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 497static 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
502static 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
508static 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 */
519static 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 532static 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
541static inline void slave_update_last_tx(struct slave *slave)
542{
543 WRITE_ONCE(slave->last_tx, jiffies);
544}
545
546static 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 552static 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 558static 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 566static 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
577static 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 583static 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
592static inline void bond_set_slave_rx_enabled_flags(struct slave *slave,
593 bool notify)
594{
595 slave->rx_disabled = 0;
2d7011ca
JP
596}
597
598static inline bool bond_is_slave_inactive(struct slave *slave)
599{
600 return slave->inactive;
1da177e4
LT
601}
602
240fd405
AA
603static inline bool bond_is_slave_rx_disabled(struct slave *slave)
604{
605 return slave->rx_disabled;
606}
607
f307668b
MB
608static inline void bond_propose_link_state(struct slave *slave, int state)
609{
610 slave->link_new_state = state;
611}
612
613static 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
631static 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
638static 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
652static 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 667struct 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 676int bond_rcv_validate(const struct sk_buff *skb, struct bonding *bond, struct slave *slave);
ae46f184 677netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
ec87fd3b 678int bond_create(struct net *net, const char *name);
4c22400a
EB
679int bond_create_sysfs(struct bond_net *net);
680void bond_destroy_sysfs(struct bond_net *net);
6151b3d4 681void bond_prepare_sysfs_group(struct bonding *bond);
07699f9a 682int bond_sysfs_slave_add(struct slave *slave);
683void bond_sysfs_slave_del(struct slave *slave);
cb9e6e58 684void bond_xdp_set_features(struct net_device *bond_dev);
33eaf2a6
DA
685int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev,
686 struct netlink_ext_ack *extack);
a77b5325 687int bond_release(struct net_device *bond_dev, struct net_device *slave_dev);
ee62e868 688u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb);
2477bc9a 689int bond_set_carrier(struct bonding *bond);
a77b5325
MW
690void bond_select_active_slave(struct bonding *bond);
691void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
f073c7ca
TI
692void bond_create_debugfs(void);
693void bond_destroy_debugfs(void);
694void bond_debug_register(struct bonding *bond);
695void bond_debug_unregister(struct bonding *bond);
696void bond_debug_reregister(struct bonding *bond);
d30ee670 697const char *bond_mode_name(int mode);
0a2a78c4
JP
698void bond_setup(struct net_device *bond_dev);
699unsigned int bond_get_num_tx_queues(void);
700int bond_netlink_init(void);
701void bond_netlink_fini(void);
752d48b5 702struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);
07699f9a 703const char *bond_slave_link_status(s8 link);
3e403a77
VF
704struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev,
705 struct net_device *end_dev,
706 int level);
ee637714
MB
707int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave);
708void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay);
ea8ffc08 709void bond_work_init_all(struct bonding *bond);
1da177e4 710
bd33acc3
AW
711#ifdef CONFIG_PROC_FS
712void bond_create_proc_entry(struct bonding *bond);
713void bond_remove_proc_entry(struct bonding *bond);
714void bond_create_proc_dir(struct bond_net *bn);
715void bond_destroy_proc_dir(struct bond_net *bn);
716#else
717static inline void bond_create_proc_entry(struct bonding *bond)
718{
719}
720
721static inline void bond_remove_proc_entry(struct bonding *bond)
722{
723}
724
725static inline void bond_create_proc_dir(struct bond_net *bn)
726{
727}
728
729static inline void bond_destroy_proc_dir(struct bond_net *bn)
730{
731}
732#endif
733
567b871e 734static 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 748static 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 */
762static 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
776static 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 795extern unsigned int bond_net_id;
b06715b7 796
0a2a78c4
JP
797/* exported from bond_netlink.c */
798extern struct rtnl_link_ops bond_link_ops;
799
b9ad3e9f
JI
800/* exported from bond_sysfs_slave.c */
801extern const struct sysfs_ops slave_sysfs_ops;
802
1d9a143e
BP
803/* exported from bond_3ad.c */
804extern const u8 lacpdu_mcast_addr[];
805
ae46f184 806static 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 */