tjh.dev
Linux kernel mirror (for testing)
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linux
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 *
13 */
14
15#ifndef _NET_BONDING_H
16#define _NET_BONDING_H
17
18#include <linux/timer.h>
19#include <linux/proc_fs.h>
20#include <linux/if_bonding.h>
21#include <linux/cpumask.h>
22#include <linux/in6.h>
23#include <linux/netpoll.h>
24#include <linux/inetdevice.h>
25#include <linux/etherdevice.h>
26#include <linux/reciprocal_div.h>
27#include <linux/if_link.h>
28
29#include <net/bond_3ad.h>
30#include <net/bond_alb.h>
31#include <net/bond_options.h>
32
33#define BOND_MAX_ARP_TARGETS 16
34
35#define BOND_DEFAULT_MIIMON 100
36
37#ifndef __long_aligned
38#define __long_aligned __attribute__((aligned((sizeof(long)))))
39#endif
40
41#define BOND_MODE(bond) ((bond)->params.mode)
42
43/* slave list primitives */
44#define bond_slave_list(bond) (&(bond)->dev->adj_list.lower)
45
46#define bond_has_slaves(bond) !list_empty(bond_slave_list(bond))
47
48/* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */
49#define bond_first_slave(bond) \
50 (bond_has_slaves(bond) ? \
51 netdev_adjacent_get_private(bond_slave_list(bond)->next) : \
52 NULL)
53#define bond_last_slave(bond) \
54 (bond_has_slaves(bond) ? \
55 netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \
56 NULL)
57
58/* Caller must have rcu_read_lock */
59#define bond_first_slave_rcu(bond) \
60 netdev_lower_get_first_private_rcu(bond->dev)
61
62#define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond))
63#define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond))
64
65/**
66 * bond_for_each_slave - iterate over all slaves
67 * @bond: the bond holding this list
68 * @pos: current slave
69 * @iter: list_head * iterator
70 *
71 * Caller must hold RTNL
72 */
73#define bond_for_each_slave(bond, pos, iter) \
74 netdev_for_each_lower_private((bond)->dev, pos, iter)
75
76/* Caller must have rcu_read_lock */
77#define bond_for_each_slave_rcu(bond, pos, iter) \
78 netdev_for_each_lower_private_rcu((bond)->dev, pos, iter)
79
80#ifdef CONFIG_NET_POLL_CONTROLLER
81extern atomic_t netpoll_block_tx;
82
83static inline void block_netpoll_tx(void)
84{
85 atomic_inc(&netpoll_block_tx);
86}
87
88static inline void unblock_netpoll_tx(void)
89{
90 atomic_dec(&netpoll_block_tx);
91}
92
93static inline int is_netpoll_tx_blocked(struct net_device *dev)
94{
95 if (unlikely(netpoll_tx_running(dev)))
96 return atomic_read(&netpoll_block_tx);
97 return 0;
98}
99#else
100#define block_netpoll_tx()
101#define unblock_netpoll_tx()
102#define is_netpoll_tx_blocked(dev) (0)
103#endif
104
105struct bond_params {
106 int mode;
107 int xmit_policy;
108 int miimon;
109 u8 num_peer_notif;
110 int arp_interval;
111 int arp_validate;
112 int arp_all_targets;
113 int use_carrier;
114 int fail_over_mac;
115 int updelay;
116 int downdelay;
117 int lacp_fast;
118 unsigned int min_links;
119 int ad_select;
120 char primary[IFNAMSIZ];
121 int primary_reselect;
122 __be32 arp_targets[BOND_MAX_ARP_TARGETS];
123 int tx_queues;
124 int all_slaves_active;
125 int resend_igmp;
126 int lp_interval;
127 int packets_per_slave;
128 int tlb_dynamic_lb;
129 struct reciprocal_value reciprocal_packets_per_slave;
130 u16 ad_actor_sys_prio;
131 u16 ad_user_port_key;
132
133 /* 2 bytes of padding : see ether_addr_equal_64bits() */
134 u8 ad_actor_system[ETH_ALEN + 2];
135};
136
137struct bond_parm_tbl {
138 char *modename;
139 int mode;
140};
141
142struct netdev_notify_work {
143 struct delayed_work work;
144 struct net_device *dev;
145 struct netdev_bonding_info bonding_info;
146};
147
148struct slave {
149 struct net_device *dev; /* first - useful for panic debug */
150 struct bonding *bond; /* our master */
151 int delay;
152 /* all three in jiffies */
153 unsigned long last_link_up;
154 unsigned long last_rx;
155 unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS];
156 s8 link; /* one of BOND_LINK_XXXX */
157 s8 link_new_state; /* one of BOND_LINK_XXXX */
158 s8 new_link;
159 u8 backup:1, /* indicates backup slave. Value corresponds with
160 BOND_STATE_ACTIVE and BOND_STATE_BACKUP */
161 inactive:1, /* indicates inactive slave */
162 should_notify:1, /* indicates whether the state changed */
163 should_notify_link:1; /* indicates whether the link changed */
164 u8 duplex;
165 u32 original_mtu;
166 u32 link_failure_count;
167 u32 speed;
168 u16 queue_id;
169 u8 perm_hwaddr[MAX_ADDR_LEN];
170 struct ad_slave_info *ad_info;
171 struct tlb_slave_info tlb_info;
172#ifdef CONFIG_NET_POLL_CONTROLLER
173 struct netpoll *np;
174#endif
175 struct kobject kobj;
176 struct rtnl_link_stats64 slave_stats;
177};
178
179struct bond_up_slave {
180 unsigned int count;
181 struct rcu_head rcu;
182 struct slave *arr[0];
183};
184
185/*
186 * Link pseudo-state only used internally by monitors
187 */
188#define BOND_LINK_NOCHANGE -1
189
190/*
191 * Here are the locking policies for the two bonding locks:
192 * Get rcu_read_lock when reading or RTNL when writing slave list.
193 */
194struct bonding {
195 struct net_device *dev; /* first - useful for panic debug */
196 struct slave __rcu *curr_active_slave;
197 struct slave __rcu *current_arp_slave;
198 struct slave __rcu *primary_slave;
199 struct bond_up_slave __rcu *slave_arr; /* Array of usable slaves */
200 bool force_primary;
201 s32 slave_cnt; /* never change this value outside the attach/detach wrappers */
202 int (*recv_probe)(const struct sk_buff *, struct bonding *,
203 struct slave *);
204 /* mode_lock is used for mode-specific locking needs, currently used by:
205 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and
206 * bond_3ad_state_machine_handler() concurrently and also
207 * the access to the state machine shared variables.
208 * TLB mode (5) - to sync the use and modifications of its hash table
209 * ALB mode (6) - to sync the use and modifications of its hash table
210 */
211 spinlock_t mode_lock;
212 spinlock_t stats_lock;
213 u8 send_peer_notif;
214 u8 igmp_retrans;
215#ifdef CONFIG_PROC_FS
216 struct proc_dir_entry *proc_entry;
217 char proc_file_name[IFNAMSIZ];
218#endif /* CONFIG_PROC_FS */
219 struct list_head bond_list;
220 u32 rr_tx_counter;
221 struct ad_bond_info ad_info;
222 struct alb_bond_info alb_info;
223 struct bond_params params;
224 struct workqueue_struct *wq;
225 struct delayed_work mii_work;
226 struct delayed_work arp_work;
227 struct delayed_work alb_work;
228 struct delayed_work ad_work;
229 struct delayed_work mcast_work;
230 struct delayed_work slave_arr_work;
231#ifdef CONFIG_DEBUG_FS
232 /* debugging support via debugfs */
233 struct dentry *debug_dir;
234#endif /* CONFIG_DEBUG_FS */
235 struct rtnl_link_stats64 bond_stats;
236};
237
238#define bond_slave_get_rcu(dev) \
239 ((struct slave *) rcu_dereference(dev->rx_handler_data))
240
241#define bond_slave_get_rtnl(dev) \
242 ((struct slave *) rtnl_dereference(dev->rx_handler_data))
243
244void bond_queue_slave_event(struct slave *slave);
245void bond_lower_state_changed(struct slave *slave);
246
247struct bond_vlan_tag {
248 __be16 vlan_proto;
249 unsigned short vlan_id;
250};
251
252/**
253 * Returns NULL if the net_device does not belong to any of the bond's slaves
254 *
255 * Caller must hold bond lock for read
256 */
257static inline struct slave *bond_get_slave_by_dev(struct bonding *bond,
258 struct net_device *slave_dev)
259{
260 return netdev_lower_dev_get_private(bond->dev, slave_dev);
261}
262
263static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
264{
265 return slave->bond;
266}
267
268static inline bool bond_should_override_tx_queue(struct bonding *bond)
269{
270 return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP ||
271 BOND_MODE(bond) == BOND_MODE_ROUNDROBIN;
272}
273
274static inline bool bond_is_lb(const struct bonding *bond)
275{
276 return BOND_MODE(bond) == BOND_MODE_TLB ||
277 BOND_MODE(bond) == BOND_MODE_ALB;
278}
279
280static inline bool bond_needs_speed_duplex(const struct bonding *bond)
281{
282 return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond);
283}
284
285static inline bool bond_is_nondyn_tlb(const struct bonding *bond)
286{
287 return (BOND_MODE(bond) == BOND_MODE_TLB) &&
288 (bond->params.tlb_dynamic_lb == 0);
289}
290
291static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond)
292{
293 return (BOND_MODE(bond) == BOND_MODE_8023AD ||
294 BOND_MODE(bond) == BOND_MODE_XOR ||
295 bond_is_nondyn_tlb(bond));
296}
297
298static inline bool bond_mode_uses_arp(int mode)
299{
300 return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB &&
301 mode != BOND_MODE_ALB;
302}
303
304static inline bool bond_mode_uses_primary(int mode)
305{
306 return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB ||
307 mode == BOND_MODE_ALB;
308}
309
310static inline bool bond_uses_primary(struct bonding *bond)
311{
312 return bond_mode_uses_primary(BOND_MODE(bond));
313}
314
315static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
316{
317 struct slave *slave = rcu_dereference(bond->curr_active_slave);
318
319 return bond_uses_primary(bond) && slave ? slave->dev : NULL;
320}
321
322static inline bool bond_slave_is_up(struct slave *slave)
323{
324 return netif_running(slave->dev) && netif_carrier_ok(slave->dev);
325}
326
327static inline void bond_set_active_slave(struct slave *slave)
328{
329 if (slave->backup) {
330 slave->backup = 0;
331 bond_queue_slave_event(slave);
332 bond_lower_state_changed(slave);
333 }
334}
335
336static inline void bond_set_backup_slave(struct slave *slave)
337{
338 if (!slave->backup) {
339 slave->backup = 1;
340 bond_queue_slave_event(slave);
341 bond_lower_state_changed(slave);
342 }
343}
344
345static inline void bond_set_slave_state(struct slave *slave,
346 int slave_state, bool notify)
347{
348 if (slave->backup == slave_state)
349 return;
350
351 slave->backup = slave_state;
352 if (notify) {
353 bond_lower_state_changed(slave);
354 bond_queue_slave_event(slave);
355 slave->should_notify = 0;
356 } else {
357 if (slave->should_notify)
358 slave->should_notify = 0;
359 else
360 slave->should_notify = 1;
361 }
362}
363
364static inline void bond_slave_state_change(struct bonding *bond)
365{
366 struct list_head *iter;
367 struct slave *tmp;
368
369 bond_for_each_slave(bond, tmp, iter) {
370 if (tmp->link == BOND_LINK_UP)
371 bond_set_active_slave(tmp);
372 else if (tmp->link == BOND_LINK_DOWN)
373 bond_set_backup_slave(tmp);
374 }
375}
376
377static inline void bond_slave_state_notify(struct bonding *bond)
378{
379 struct list_head *iter;
380 struct slave *tmp;
381
382 bond_for_each_slave(bond, tmp, iter) {
383 if (tmp->should_notify) {
384 bond_lower_state_changed(tmp);
385 tmp->should_notify = 0;
386 }
387 }
388}
389
390static inline int bond_slave_state(struct slave *slave)
391{
392 return slave->backup;
393}
394
395static inline bool bond_is_active_slave(struct slave *slave)
396{
397 return !bond_slave_state(slave);
398}
399
400static inline bool bond_slave_can_tx(struct slave *slave)
401{
402 return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP &&
403 bond_is_active_slave(slave);
404}
405
406static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len)
407{
408 if (len == ETH_ALEN) {
409 ether_addr_copy(dst, src);
410 return;
411 }
412
413 memcpy(dst, src, len);
414}
415
416#define BOND_PRI_RESELECT_ALWAYS 0
417#define BOND_PRI_RESELECT_BETTER 1
418#define BOND_PRI_RESELECT_FAILURE 2
419
420#define BOND_FOM_NONE 0
421#define BOND_FOM_ACTIVE 1
422#define BOND_FOM_FOLLOW 2
423
424#define BOND_ARP_TARGETS_ANY 0
425#define BOND_ARP_TARGETS_ALL 1
426
427#define BOND_ARP_VALIDATE_NONE 0
428#define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE)
429#define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP)
430#define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \
431 BOND_ARP_VALIDATE_BACKUP)
432#define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1)
433#define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \
434 BOND_ARP_FILTER)
435#define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \
436 BOND_ARP_FILTER)
437
438#define BOND_SLAVE_NOTIFY_NOW true
439#define BOND_SLAVE_NOTIFY_LATER false
440
441static inline int slave_do_arp_validate(struct bonding *bond,
442 struct slave *slave)
443{
444 return bond->params.arp_validate & (1 << bond_slave_state(slave));
445}
446
447static inline int slave_do_arp_validate_only(struct bonding *bond)
448{
449 return bond->params.arp_validate & BOND_ARP_FILTER;
450}
451
452static inline int bond_is_ip_target_ok(__be32 addr)
453{
454 return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr);
455}
456
457/* Get the oldest arp which we've received on this slave for bond's
458 * arp_targets.
459 */
460static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond,
461 struct slave *slave)
462{
463 int i = 1;
464 unsigned long ret = slave->target_last_arp_rx[0];
465
466 for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++)
467 if (time_before(slave->target_last_arp_rx[i], ret))
468 ret = slave->target_last_arp_rx[i];
469
470 return ret;
471}
472
473static inline unsigned long slave_last_rx(struct bonding *bond,
474 struct slave *slave)
475{
476 if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL)
477 return slave_oldest_target_arp_rx(bond, slave);
478
479 return slave->last_rx;
480}
481
482#ifdef CONFIG_NET_POLL_CONTROLLER
483static inline void bond_netpoll_send_skb(const struct slave *slave,
484 struct sk_buff *skb)
485{
486 struct netpoll *np = slave->np;
487
488 if (np)
489 netpoll_send_skb(np, skb);
490}
491#else
492static inline void bond_netpoll_send_skb(const struct slave *slave,
493 struct sk_buff *skb)
494{
495}
496#endif
497
498static inline void bond_set_slave_inactive_flags(struct slave *slave,
499 bool notify)
500{
501 if (!bond_is_lb(slave->bond))
502 bond_set_slave_state(slave, BOND_STATE_BACKUP, notify);
503 if (!slave->bond->params.all_slaves_active)
504 slave->inactive = 1;
505}
506
507static inline void bond_set_slave_active_flags(struct slave *slave,
508 bool notify)
509{
510 bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify);
511 slave->inactive = 0;
512}
513
514static inline bool bond_is_slave_inactive(struct slave *slave)
515{
516 return slave->inactive;
517}
518
519static inline void bond_propose_link_state(struct slave *slave, int state)
520{
521 slave->link_new_state = state;
522}
523
524static inline void bond_commit_link_state(struct slave *slave, bool notify)
525{
526 if (slave->link == slave->link_new_state)
527 return;
528
529 slave->link = slave->link_new_state;
530 if (notify) {
531 bond_queue_slave_event(slave);
532 bond_lower_state_changed(slave);
533 slave->should_notify_link = 0;
534 } else {
535 if (slave->should_notify_link)
536 slave->should_notify_link = 0;
537 else
538 slave->should_notify_link = 1;
539 }
540}
541
542static inline void bond_set_slave_link_state(struct slave *slave, int state,
543 bool notify)
544{
545 bond_propose_link_state(slave, state);
546 bond_commit_link_state(slave, notify);
547}
548
549static inline void bond_slave_link_notify(struct bonding *bond)
550{
551 struct list_head *iter;
552 struct slave *tmp;
553
554 bond_for_each_slave(bond, tmp, iter) {
555 if (tmp->should_notify_link) {
556 bond_queue_slave_event(tmp);
557 bond_lower_state_changed(tmp);
558 tmp->should_notify_link = 0;
559 }
560 }
561}
562
563static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local)
564{
565 struct in_device *in_dev;
566 __be32 addr = 0;
567
568 rcu_read_lock();
569 in_dev = __in_dev_get_rcu(dev);
570
571 if (in_dev)
572 addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local,
573 RT_SCOPE_HOST);
574 rcu_read_unlock();
575 return addr;
576}
577
578struct bond_net {
579 struct net *net; /* Associated network namespace */
580 struct list_head dev_list;
581#ifdef CONFIG_PROC_FS
582 struct proc_dir_entry *proc_dir;
583#endif
584 struct class_attribute class_attr_bonding_masters;
585};
586
587int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave);
588void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
589int bond_create(struct net *net, const char *name);
590int bond_create_sysfs(struct bond_net *net);
591void bond_destroy_sysfs(struct bond_net *net);
592void bond_prepare_sysfs_group(struct bonding *bond);
593int bond_sysfs_slave_add(struct slave *slave);
594void bond_sysfs_slave_del(struct slave *slave);
595int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev,
596 struct netlink_ext_ack *extack);
597int bond_release(struct net_device *bond_dev, struct net_device *slave_dev);
598u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb);
599int bond_set_carrier(struct bonding *bond);
600void bond_select_active_slave(struct bonding *bond);
601void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
602void bond_create_debugfs(void);
603void bond_destroy_debugfs(void);
604void bond_debug_register(struct bonding *bond);
605void bond_debug_unregister(struct bonding *bond);
606void bond_debug_reregister(struct bonding *bond);
607const char *bond_mode_name(int mode);
608void bond_setup(struct net_device *bond_dev);
609unsigned int bond_get_num_tx_queues(void);
610int bond_netlink_init(void);
611void bond_netlink_fini(void);
612struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);
613const char *bond_slave_link_status(s8 link);
614struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev,
615 struct net_device *end_dev,
616 int level);
617int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave);
618void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay);
619void bond_work_init_all(struct bonding *bond);
620
621#ifdef CONFIG_PROC_FS
622void bond_create_proc_entry(struct bonding *bond);
623void bond_remove_proc_entry(struct bonding *bond);
624void bond_create_proc_dir(struct bond_net *bn);
625void bond_destroy_proc_dir(struct bond_net *bn);
626#else
627static inline void bond_create_proc_entry(struct bonding *bond)
628{
629}
630
631static inline void bond_remove_proc_entry(struct bonding *bond)
632{
633}
634
635static inline void bond_create_proc_dir(struct bond_net *bn)
636{
637}
638
639static inline void bond_destroy_proc_dir(struct bond_net *bn)
640{
641}
642#endif
643
644static inline struct slave *bond_slave_has_mac(struct bonding *bond,
645 const u8 *mac)
646{
647 struct list_head *iter;
648 struct slave *tmp;
649
650 bond_for_each_slave(bond, tmp, iter)
651 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
652 return tmp;
653
654 return NULL;
655}
656
657/* Caller must hold rcu_read_lock() for read */
658static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond,
659 const u8 *mac)
660{
661 struct list_head *iter;
662 struct slave *tmp;
663
664 bond_for_each_slave_rcu(bond, tmp, iter)
665 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
666 return tmp;
667
668 return NULL;
669}
670
671/* Caller must hold rcu_read_lock() for read */
672static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac)
673{
674 struct list_head *iter;
675 struct slave *tmp;
676 struct netdev_hw_addr *ha;
677
678 bond_for_each_slave_rcu(bond, tmp, iter)
679 if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
680 return true;
681
682 if (netdev_uc_empty(bond->dev))
683 return false;
684
685 netdev_for_each_uc_addr(ha, bond->dev)
686 if (ether_addr_equal_64bits(mac, ha->addr))
687 return true;
688
689 return false;
690}
691
692/* Check if the ip is present in arp ip list, or first free slot if ip == 0
693 * Returns -1 if not found, index if found
694 */
695static inline int bond_get_targets_ip(__be32 *targets, __be32 ip)
696{
697 int i;
698
699 for (i = 0; i < BOND_MAX_ARP_TARGETS; i++)
700 if (targets[i] == ip)
701 return i;
702 else if (targets[i] == 0)
703 break;
704
705 return -1;
706}
707
708/* exported from bond_main.c */
709extern unsigned int bond_net_id;
710extern const struct bond_parm_tbl bond_lacp_tbl[];
711extern const struct bond_parm_tbl xmit_hashtype_tbl[];
712extern const struct bond_parm_tbl arp_validate_tbl[];
713extern const struct bond_parm_tbl arp_all_targets_tbl[];
714extern const struct bond_parm_tbl fail_over_mac_tbl[];
715extern const struct bond_parm_tbl pri_reselect_tbl[];
716extern struct bond_parm_tbl ad_select_tbl[];
717
718/* exported from bond_netlink.c */
719extern struct rtnl_link_ops bond_link_ops;
720
721static inline void bond_tx_drop(struct net_device *dev, struct sk_buff *skb)
722{
723 atomic_long_inc(&dev->tx_dropped);
724 dev_kfree_skb_any(skb);
725}
726
727#endif /* _NET_BONDING_H */