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net: sched: enable per cpu qstats
[linux-2.6-block.git] / drivers / net / bonding / bonding.h
CommitLineData
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
15#ifndef _LINUX_BONDING_H
16#define _LINUX_BONDING_H
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
HFS		 26#include <linux/reciprocal_div.h>
27
1da177e4
LT		 28#include "bond_3ad.h"
29#include "bond_alb.h"
09117362 30#include "bond_options.h"
1da177e4 31
ad246c99
BH		 32#define DRV_VERSION "3.7.1"
33#define DRV_RELDATE "April 27, 2011"
1da177e4
LT		 34#define DRV_NAME "bonding"
35#define DRV_DESCRIPTION "Ethernet Channel Bonding Driver"
36
bd33acc3
AW		 37#define bond_version DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n"
38
1da177e4
LT		 39#define BOND_MAX_ARP_TARGETS 16
40
fe9d04af 41#define BOND_DEFAULT_MIIMON 100
42
1da177e4
LT		 43/*
44 * Less bad way to call ioctl from within the kernel; this needs to be
45 * done some other way to get the call out of interrupt context.
46 * Needs "ioctl" variable to be supplied by calling context.
47 */
48#define IOCTL(dev, arg, cmd) ({ \
49 int res = 0; \
50 mm_segment_t fs = get_fs(); \
51 set_fs(get_ds()); \
52 res = ioctl(dev, arg, cmd); \
53 set_fs(fs); \
54 res; })
55
01844098
VF		 56#define BOND_MODE(bond) ((bond)->params.mode)
57
dec1e90e 58/* slave list primitives */
5a52405a
VF		 59#define bond_slave_list(bond) (&(bond)->dev->adj_list.lower)
60
61#define bond_has_slaves(bond) !list_empty(bond_slave_list(bond))
0965a1f3 62
dec1e90e 63/* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */
64#define bond_first_slave(bond) \
5a52405a
VF		 65 (bond_has_slaves(bond) ? \
66 netdev_adjacent_get_private(bond_slave_list(bond)->next) : \
67 NULL)
dec1e90e 68#define bond_last_slave(bond) \
5a52405a
VF		 69 (bond_has_slaves(bond) ? \
70 netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \
71 NULL)
dec1e90e 72
e001bfad 73/* Caller must have rcu_read_lock */
74#define bond_first_slave_rcu(bond) \
75 netdev_lower_get_first_private_rcu(bond->dev)
76
5a52405a
VF		 77#define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond))
78#define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond))
dec1e90e 79
1da177e4 80/**
dec1e90e 81 * bond_for_each_slave - iterate over all slaves
82 * @bond: the bond holding this list
83 * @pos: current slave
9caff1e7 84 * @iter: list_head * iterator
1da177e4 85 *
87163ef9 86 * Caller must hold RTNL
1da177e4 87 */
9caff1e7
VF		 88#define bond_for_each_slave(bond, pos, iter) \
89 netdev_for_each_lower_private((bond)->dev, pos, iter)
1da177e4 90
278b2083 91/* Caller must have rcu_read_lock */
9caff1e7
VF		 92#define bond_for_each_slave_rcu(bond, pos, iter) \
93 netdev_for_each_lower_private_rcu((bond)->dev, pos, iter)
278b2083 94
e843fa50 95#ifdef CONFIG_NET_POLL_CONTROLLER
fb4fa76a 96extern atomic_t netpoll_block_tx;
e843fa50
NH		 97
98static inline void block_netpoll_tx(void)
99{
fb4fa76a 100 atomic_inc(&netpoll_block_tx);
e843fa50
NH		 101}
102
103static inline void unblock_netpoll_tx(void)
104{
fb4fa76a 105 atomic_dec(&netpoll_block_tx);
e843fa50
NH		 106}
107
108static 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		 120struct bond_params {
121 int mode;
169a3e66 122 int xmit_policy;
1da177e4 123 int miimon;
ad246c99 124 u8 num_peer_notif;
1da177e4 125 int arp_interval;
f5b2b966 126 int arp_validate;
8599b52e 127 int arp_all_targets;
1da177e4 128 int use_carrier;
dd957c57 129 int fail_over_mac;
1da177e4
LT		 130 int updelay;
131 int downdelay;
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;
1da177e4
LT		 145};
146
12479f9a
MW		 147struct bond_parm_tbl {
148 char *modename;
149 int mode;
150};
151
1da177e4 152struct slave {
e944ef79 153 struct net_device *dev; /* first - useful for panic debug */
35d48903 154 struct bonding *bond; /* our master */
8bb5f96b 155 int delay;
8e603460
VF		 156 /* all three in jiffies */
157 unsigned long last_link_up;
49f17de7 158 unsigned long last_rx;
8599b52e 159 unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS];
1da177e4 160 s8 link; /* one of BOND_LINK_XXXX */
b2220cad 161 s8 new_link;
2d7011ca
JP		 162 u8 backup:1, /* indicates backup slave. Value corresponds with
163 BOND_STATE_ACTIVE and BOND_STATE_BACKUP */
5e5b0665 164 inactive:1, /* indicates inactive slave */
165 should_notify:1; /* indicateds whether the state changed */
5d30530e 166 u8 duplex;
3158bf7d 167 u32 original_mtu;
1da177e4 168 u32 link_failure_count;
5d30530e 169 u32 speed;
bb1d9123 170 u16 queue_id;
5d30530e 171 u8 perm_hwaddr[ETH_ALEN];
3fdddd85 172 struct ad_slave_info *ad_info;
1da177e4 173 struct tlb_slave_info tlb_info;
8a8efa22
AW		 174#ifdef CONFIG_NET_POLL_CONTROLLER
175 struct netpoll *np;
176#endif
07699f9a 177 struct kobject kobj;
1da177e4
LT		 178};
179
b2220cad
JV		 180/*
181 * Link pseudo-state only used internally by monitors
182 */
183#define BOND_LINK_NOCHANGE -1
184
1da177e4
LT		 185/*
186 * Here are the locking policies for the two bonding locks:
1c72cfdc 187 * Get rcu_read_lock when reading or RTNL when writing slave list.
1da177e4
LT		 188 */
189struct bonding {
e944ef79 190 struct net_device *dev; /* first - useful for panic debug */
4740d638 191 struct slave __rcu *curr_active_slave;
85741718 192 struct slave __rcu *current_arp_slave;
059b47e8 193 struct slave __rcu *primary_slave;
a549952a 194 bool force_primary;
1da177e4 195 s32 slave_cnt; /* never change this value outside the attach/detach wrappers */
de063b70
ED		 196 int (*recv_probe)(const struct sk_buff *, struct bonding *,
197 struct slave *);
8c0bc550
NA		 198 /* mode_lock is used for mode-specific locking needs, currently used by:
199 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and
547942ca
NA		 200 * bond_3ad_state_machine_handler() concurrently and also
201 * the access to the state machine shared variables.
8c0bc550
NA		 202 * TLB mode (5) - to sync the use and modifications of its hash table
203 * ALB mode (6) - to sync the use and modifications of its hash table
204 */
b7435628 205 spinlock_t mode_lock;
ad246c99 206 u8 send_peer_notif;
4f5474e7 207 u8 igmp_retrans;
1da177e4
LT		 208#ifdef CONFIG_PROC_FS
209 struct proc_dir_entry *proc_entry;
210 char proc_file_name[IFNAMSIZ];
211#endif /* CONFIG_PROC_FS */
212 struct list_head bond_list;
73958329 213 u32 rr_tx_counter;
1da177e4
LT		 214 struct ad_bond_info ad_info;
215 struct alb_bond_info alb_info;
216 struct bond_params params;
1b76b316
JV		 217 struct workqueue_struct *wq;
218 struct delayed_work mii_work;
219 struct delayed_work arp_work;
220 struct delayed_work alb_work;
221 struct delayed_work ad_work;
5a37e8ca 222 struct delayed_work mcast_work;
f073c7ca 223#ifdef CONFIG_DEBUG_FS
02582e9b 224 /* debugging support via debugfs */
f073c7ca
TI		 225 struct dentry *debug_dir;
226#endif /* CONFIG_DEBUG_FS */
1da177e4
LT		 227};
228
f1c1775a
JP		 229#define bond_slave_get_rcu(dev) \
230 ((struct slave *) rcu_dereference(dev->rx_handler_data))
231
471cb5a3
JP		 232#define bond_slave_get_rtnl(dev) \
233 ((struct slave *) rtnl_dereference(dev->rx_handler_data))
234
fbd929f2 235struct bond_vlan_tag {
236 __be16 vlan_proto;
237 unsigned short vlan_id;
238};
239
1da177e4
LT		 240/**
241 * Returns NULL if the net_device does not belong to any of the bond's slaves
242 *
243 * Caller must hold bond lock for read
244 */
4ec952b8 245static inline struct slave *bond_get_slave_by_dev(struct bonding *bond,
246 struct net_device *slave_dev)
1da177e4 247{
46bb4807 248 return netdev_lower_dev_get_private(bond->dev, slave_dev);
1da177e4
LT		 249}
250
cceb904f 251static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
1da177e4 252{
471cb5a3 253 return slave->bond;
1da177e4
LT		 254}
255
d1e2e5cd
VF		 256static inline bool bond_should_override_tx_queue(struct bonding *bond)
257{
01844098
VF		 258 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP ||
259 BOND_MODE(bond) == BOND_MODE_ROUNDROBIN;
d1e2e5cd
VF		 260}
261
58402054
HE		 262static inline bool bond_is_lb(const struct bonding *bond)
263{
01844098
VF		 264 return BOND_MODE(bond) == BOND_MODE_TLB ||
265 BOND_MODE(bond) == BOND_MODE_ALB;
58402054
HE		 266}
267
6b794c1c
MB		 268static inline bool bond_is_nondyn_tlb(const struct bonding *bond)
269{
270 return (BOND_MODE(bond) == BOND_MODE_TLB) &&
271 (bond->params.tlb_dynamic_lb == 0);
272}
273
267bed77
VF		 274static inline bool bond_mode_uses_arp(int mode)
275{
276 return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB &&
277 mode != BOND_MODE_ALB;
278}
279
ec0865a9
VF		 280static inline bool bond_mode_uses_primary(int mode)
281{
282 return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB ||
283 mode == BOND_MODE_ALB;
284}
285
286static inline bool bond_uses_primary(struct bonding *bond)
287{
01844098 288 return bond_mode_uses_primary(BOND_MODE(bond));
ec0865a9
VF		 289}
290
b6adc610
VF		 291static inline bool bond_slave_is_up(struct slave *slave)
292{
293 return netif_running(slave->dev) && netif_carrier_ok(slave->dev);
294}
295
e30bc066
JP		 296static inline void bond_set_active_slave(struct slave *slave)
297{
1d3ee88a 298 if (slave->backup) {
299 slave->backup = 0;
072256d1 300 rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC);
1d3ee88a 301 }
e30bc066
JP		 302}
303
304static inline void bond_set_backup_slave(struct slave *slave)
305{
1d3ee88a 306 if (!slave->backup) {
307 slave->backup = 1;
072256d1 308 rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC);
1d3ee88a 309 }
e30bc066
JP		 310}
311
5e5b0665 312static inline void bond_set_slave_state(struct slave *slave,
313 int slave_state, bool notify)
314{
315 if (slave->backup == slave_state)
316 return;
317
318 slave->backup = slave_state;
319 if (notify) {
072256d1 320 rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0, GFP_ATOMIC);
5e5b0665 321 slave->should_notify = 0;
322 } else {
323 if (slave->should_notify)
324 slave->should_notify = 0;
325 else
326 slave->should_notify = 1;
327 }
328}
329
6fde8f03
DT		 330static inline void bond_slave_state_change(struct bonding *bond)
331{
332 struct list_head *iter;
333 struct slave *tmp;
334
335 bond_for_each_slave(bond, tmp, iter) {
336 if (tmp->link == BOND_LINK_UP)
337 bond_set_active_slave(tmp);
338 else if (tmp->link == BOND_LINK_DOWN)
339 bond_set_backup_slave(tmp);
340 }
341}
342
b0929915 343static inline void bond_slave_state_notify(struct bonding *bond)
344{
345 struct list_head *iter;
346 struct slave *tmp;
347
348 bond_for_each_slave(bond, tmp, iter) {
349 if (tmp->should_notify) {
072256d1 350 rtmsg_ifinfo(RTM_NEWLINK, tmp->dev, 0, GFP_ATOMIC);
b0929915 351 tmp->should_notify = 0;
352 }
353 }
354}
355
e30bc066
JP		 356static inline int bond_slave_state(struct slave *slave)
357{
358 return slave->backup;
359}
360
361static inline bool bond_is_active_slave(struct slave *slave)
362{
363 return !bond_slave_state(slave);
364}
365
891ab54d
VF		 366static inline bool bond_slave_can_tx(struct slave *slave)
367{
368 return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP &&
369 bond_is_active_slave(slave);
370}
371
a549952a
JP		 372#define BOND_PRI_RESELECT_ALWAYS 0
373#define BOND_PRI_RESELECT_BETTER 1
374#define BOND_PRI_RESELECT_FAILURE 2
375
3915c1e8
JV		 376#define BOND_FOM_NONE 0
377#define BOND_FOM_ACTIVE 1
378#define BOND_FOM_FOLLOW 2
379
8599b52e
VF		 380#define BOND_ARP_TARGETS_ANY 0
381#define BOND_ARP_TARGETS_ALL 1
382
f5b2b966
JV		 383#define BOND_ARP_VALIDATE_NONE 0
384#define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE)
385#define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP)
386#define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \
387 BOND_ARP_VALIDATE_BACKUP)
896149ff
VF		 388#define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1)
389#define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \
390 BOND_ARP_FILTER)
391#define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \
392 BOND_ARP_FILTER)
f5b2b966 393
5e5b0665 394#define BOND_SLAVE_NOTIFY_NOW true
395#define BOND_SLAVE_NOTIFY_LATER false
396
079ca7da
AB		 397static inline int slave_do_arp_validate(struct bonding *bond,
398 struct slave *slave)
f5b2b966 399{
e30bc066 400 return bond->params.arp_validate & (1 << bond_slave_state(slave));
f5b2b966
JV		 401}
402
bedabf90 403static inline int slave_do_arp_validate_only(struct bonding *bond)
896149ff
VF		 404{
405 return bond->params.arp_validate & BOND_ARP_FILTER;
406}
407
2807a9fe
VF		 408static inline int bond_is_ip_target_ok(__be32 addr)
409{
410 return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr);
411}
412
8599b52e
VF		 413/* Get the oldest arp which we've received on this slave for bond's
414 * arp_targets.
415 */
416static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond,
417 struct slave *slave)
418{
419 int i = 1;
420 unsigned long ret = slave->target_last_arp_rx[0];
421
422 for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++)
423 if (time_before(slave->target_last_arp_rx[i], ret))
424 ret = slave->target_last_arp_rx[i];
425
426 return ret;
427}
428
079ca7da 429static inline unsigned long slave_last_rx(struct bonding *bond,
f8a8ccd5 430 struct slave *slave)
f5b2b966 431{
9f242738
VF		 432 if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL)
433 return slave_oldest_target_arp_rx(bond, slave);
f5b2b966 434
49f17de7 435 return slave->last_rx;
f5b2b966
JV		 436}
437
8a8efa22
AW		 438#ifdef CONFIG_NET_POLL_CONTROLLER
439static inline void bond_netpoll_send_skb(const struct slave *slave,
440 struct sk_buff *skb)
441{
442 struct netpoll *np = slave->np;
443
444 if (np)
445 netpoll_send_skb(np, skb);
446}
447#else
448static inline void bond_netpoll_send_skb(const struct slave *slave,
449 struct sk_buff *skb)
450{
451}
452#endif
453
5e5b0665 454static inline void bond_set_slave_inactive_flags(struct slave *slave,
455 bool notify)
1da177e4 456{
471cb5a3 457 if (!bond_is_lb(slave->bond))
5e5b0665 458 bond_set_slave_state(slave, BOND_STATE_BACKUP, notify);
471cb5a3 459 if (!slave->bond->params.all_slaves_active)
2d7011ca 460 slave->inactive = 1;
1da177e4
LT		 461}
462
5e5b0665 463static inline void bond_set_slave_active_flags(struct slave *slave,
464 bool notify)
1da177e4 465{
5e5b0665 466 bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify);
2d7011ca
JP		 467 slave->inactive = 0;
468}
469
470static inline bool bond_is_slave_inactive(struct slave *slave)
471{
472 return slave->inactive;
1da177e4
LT		 473}
474
eaddcd76
AG		 475static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local)
476{
477 struct in_device *in_dev;
478 __be32 addr = 0;
479
480 rcu_read_lock();
481 in_dev = __in_dev_get_rcu(dev);
482
483 if (in_dev)
b601fa19
ND		 484 addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local,
485 RT_SCOPE_HOST);
eaddcd76
AG		 486 rcu_read_unlock();
487 return addr;
488}
489
31924325 490struct bond_net {
491 struct net *net; /* Associated network namespace */
492 struct list_head dev_list;
493#ifdef CONFIG_PROC_FS
494 struct proc_dir_entry *proc_dir;
495#endif
496 struct class_attribute class_attr_bonding_masters;
497};
4c22400a 498
5bb9e0b5 499int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave);
d316dedd 500void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
ec87fd3b 501int bond_create(struct net *net, const char *name);
4c22400a
EB		 502int bond_create_sysfs(struct bond_net *net);
503void bond_destroy_sysfs(struct bond_net *net);
6151b3d4 504void bond_prepare_sysfs_group(struct bonding *bond);
07699f9a 505int bond_sysfs_slave_add(struct slave *slave);
506void bond_sysfs_slave_del(struct slave *slave);
a77b5325
MW		 507int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev);
508int bond_release(struct net_device *bond_dev, struct net_device *slave_dev);
ee62e868 509u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb);
a77b5325
MW		 510void bond_select_active_slave(struct bonding *bond);
511void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
f073c7ca
TI		 512void bond_create_debugfs(void);
513void bond_destroy_debugfs(void);
514void bond_debug_register(struct bonding *bond);
515void bond_debug_unregister(struct bonding *bond);
516void bond_debug_reregister(struct bonding *bond);
d30ee670 517const char *bond_mode_name(int mode);
0a2a78c4
JP		 518void bond_setup(struct net_device *bond_dev);
519unsigned int bond_get_num_tx_queues(void);
520int bond_netlink_init(void);
521void bond_netlink_fini(void);
752d48b5 522struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);
07699f9a 523const char *bond_slave_link_status(s8 link);
3e403a77
VF		 524struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev,
525 struct net_device *end_dev,
526 int level);
1da177e4 527
bd33acc3
AW		 528#ifdef CONFIG_PROC_FS
529void bond_create_proc_entry(struct bonding *bond);
530void bond_remove_proc_entry(struct bonding *bond);
531void bond_create_proc_dir(struct bond_net *bn);
532void bond_destroy_proc_dir(struct bond_net *bn);
533#else
534static inline void bond_create_proc_entry(struct bonding *bond)
535{
536}
537
538static inline void bond_remove_proc_entry(struct bonding *bond)
539{
540}
541
542static inline void bond_create_proc_dir(struct bond_net *bn)
543{
544}
545
546static inline void bond_destroy_proc_dir(struct bond_net *bn)
547{
548}
549#endif
550
567b871e 551static inline struct slave *bond_slave_has_mac(struct bonding *bond,
552 const u8 *mac)
553{
9caff1e7 554 struct list_head *iter;
567b871e 555 struct slave *tmp;
556
9caff1e7 557 bond_for_each_slave(bond, tmp, iter)
567b871e 558 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
559 return tmp;
560
561 return NULL;
562}
bd33acc3 563
28c71926 564/* Caller must hold rcu_read_lock() for read */
565static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond,
566 const u8 *mac)
567{
568 struct list_head *iter;
569 struct slave *tmp;
570
571 bond_for_each_slave_rcu(bond, tmp, iter)
572 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
573 return tmp;
574
575 return NULL;
576}
577
14af9963
VY		 578/* Caller must hold rcu_read_lock() for read */
579static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac)
580{
581 struct list_head *iter;
582 struct slave *tmp;
583 struct netdev_hw_addr *ha;
584
585 bond_for_each_slave_rcu(bond, tmp, iter)
586 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
587 return true;
588
589 if (netdev_uc_empty(bond->dev))
590 return false;
591
592 netdev_for_each_uc_addr(ha, bond->dev)
593 if (ether_addr_equal_64bits(mac, ha->addr))
594 return true;
595
596 return false;
597}
598
87a7b84b
VF		 599/* Check if the ip is present in arp ip list, or first free slot if ip == 0
600 * Returns -1 if not found, index if found
601 */
602static inline int bond_get_targets_ip(__be32 *targets, __be32 ip)
603{
604 int i;
605
606 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
607 if (targets[i] == ip)
608 return i;
609 else if (targets[i] == 0)
610 break;
611
612 return -1;
613}
614
b2259672 615/* exported from bond_main.c */
ec87fd3b 616extern int bond_net_id;
e97fd7c6 617extern const struct bond_parm_tbl bond_lacp_tbl[];
e97fd7c6
HE		 618extern const struct bond_parm_tbl xmit_hashtype_tbl[];
619extern const struct bond_parm_tbl arp_validate_tbl[];
8599b52e 620extern const struct bond_parm_tbl arp_all_targets_tbl[];
e97fd7c6 621extern const struct bond_parm_tbl fail_over_mac_tbl[];
a549952a 622extern const struct bond_parm_tbl pri_reselect_tbl[];
b06715b7
HE		 623extern struct bond_parm_tbl ad_select_tbl[];
624
0a2a78c4
JP		 625/* exported from bond_netlink.c */
626extern struct rtnl_link_ops bond_link_ops;
627
1da177e4 628#endif /* _LINUX_BONDING_H */
Linux 6.x block layer and io_uring tree(s)