4  * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes
45 	netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
47 	netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
49 	netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
51 	netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
53 #define BOND_MODE(bond) ((bond)->params.mode)
55 /* slave list primitives */
56 #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower)
63 		netdev_adjacent_get_private(bond_slave_list(bond)->next) : \
67 		netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \
72 	netdev_lower_get_first_private_rcu(bond->dev)
78  * bond_for_each_slave - iterate over all slaves
80  * @pos:	current slave
86 	netdev_for_each_lower_private((bond)->dev, pos, iter)
90 	netdev_for_each_lower_private_rcu((bond)->dev, pos, iter)
123 	int mode;  member
160 struct slave {  struct
161 	struct net_device *dev; /* first - useful for panic debug */
171 	u8     backup:1,   /* indicates backup slave. Value corresponds with  argument
173 	       inactive:1, /* indicates inactive slave */  argument
193 static inline struct slave *to_slave(struct kobject *kobj)  in to_slave()  argument
195 	return container_of(kobj, struct slave, kobj);  in to_slave()
201 	struct slave	*arr[];
205  * Link pseudo-state only used internally by monitors
207 #define BOND_LINK_NOCHANGE -1
216  * Get rcu_read_lock when reading or RTNL when writing slave list.
219 	struct   net_device *dev; /* first - useful for panic debug */
220 	struct   slave __rcu *curr_active_slave;
221 	struct   slave __rcu *current_arp_slave;
222 	struct   slave __rcu *primary_slave;
228 			      struct slave *);
229 	/* mode_lock is used for mode-specific locking needs, currently used by:
230 	 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and
233 	 * TLB mode (5) - to sync the use and modifications of its hash table
234 	 * ALB mode (6) - to sync the use and modifications of its hash table
270 	((struct slave *) rcu_dereference(dev->rx_handler_data))
273 	((struct slave *) rtnl_dereference(dev->rx_handler_data))
275 void bond_queue_slave_event(struct slave *slave);
276 void bond_lower_state_changed(struct slave *slave);
290 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond,  in bond_get_slave_by_dev()
293 	return netdev_lower_dev_get_private(bond->dev, slave_dev);  in bond_get_slave_by_dev()
296 static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)  in bond_get_bond_by_slave()  argument
298 	return slave->bond;  in bond_get_bond_by_slave()
320 	return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0);  in bond_is_nondyn_tlb()
338 static inline bool bond_mode_uses_arp(int mode)  in bond_mode_uses_arp()  argument
340 	return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB &&  in bond_mode_uses_arp()
341 	       mode != BOND_MODE_ALB;  in bond_mode_uses_arp()
344 static inline bool bond_mode_uses_primary(int mode)  in bond_mode_uses_primary()  argument
346 	return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB ||  in bond_mode_uses_primary()
347 	       mode == BOND_MODE_ALB;  in bond_mode_uses_primary()
357 	struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave);  in bond_option_active_slave_get_rcu()  local
359 	return bond_uses_primary(bond) && slave ? slave->dev : NULL;  in bond_option_active_slave_get_rcu()
362 static inline bool bond_slave_is_up(struct slave *slave)  in bond_slave_is_up()  argument
364 	return netif_running(slave->dev) && netif_carrier_ok(slave->dev);  in bond_slave_is_up()
367 static inline void bond_set_active_slave(struct slave *slave)  in bond_set_active_slave()  argument
369 	if (slave->backup) {  in bond_set_active_slave()
370 		slave->backup = 0;  in bond_set_active_slave()
371 		bond_queue_slave_event(slave);  in bond_set_active_slave()
372 		bond_lower_state_changed(slave);  in bond_set_active_slave()
376 static inline void bond_set_backup_slave(struct slave *slave)  in bond_set_backup_slave()  argument
378 	if (!slave->backup) {  in bond_set_backup_slave()
379 		slave->backup = 1;  in bond_set_backup_slave()
380 		bond_queue_slave_event(slave);  in bond_set_backup_slave()
381 		bond_lower_state_changed(slave);  in bond_set_backup_slave()
385 static inline void bond_set_slave_state(struct slave *slave,  in bond_set_slave_state()  argument
388 	if (slave->backup == slave_state)  in bond_set_slave_state()
391 	slave->backup = slave_state;  in bond_set_slave_state()
393 		bond_lower_state_changed(slave);  in bond_set_slave_state()
394 		bond_queue_slave_event(slave);  in bond_set_slave_state()
395 		slave->should_notify = 0;  in bond_set_slave_state()
397 		if (slave->should_notify)  in bond_set_slave_state()
398 			slave->should_notify = 0;  in bond_set_slave_state()
400 			slave->should_notify = 1;  in bond_set_slave_state()
407 	struct slave *tmp;  in bond_slave_state_change()
410 		if (tmp->link == BOND_LINK_UP)  in bond_slave_state_change()
412 		else if (tmp->link == BOND_LINK_DOWN)  in bond_slave_state_change()
420 	struct slave *tmp;  in bond_slave_state_notify()
423 		if (tmp->should_notify) {  in bond_slave_state_notify()
425 			tmp->should_notify = 0;  in bond_slave_state_notify()
430 static inline int bond_slave_state(struct slave *slave)  in bond_slave_state()  argument
432 	return slave->backup;  in bond_slave_state()
435 static inline bool bond_is_active_slave(struct slave *slave)  in bond_is_active_slave()  argument
437 	return !bond_slave_state(slave);  in bond_is_active_slave()
440 static inline bool bond_slave_can_tx(struct slave *slave)  in bond_slave_can_tx()  argument
442 	return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP &&  in bond_slave_can_tx()
443 	       bond_is_active_slave(slave);  in bond_slave_can_tx()
448 	struct slave *slave;  in bond_is_active_slave_dev()  local
452 	slave = bond_slave_get_rcu(slave_dev);  in bond_is_active_slave_dev()
453 	active = bond_is_active_slave(slave);  in bond_is_active_slave_dev()
495 					struct slave *slave)  in slave_do_arp_validate()  argument
497 	return bond->params.arp_validate & (1 << bond_slave_state(slave));  in slave_do_arp_validate()
502 	return bond->params.arp_validate & BOND_ARP_FILTER;  in slave_do_arp_validate_only()
519 /* Get the oldest arp which we've received on this slave for bond's
523 						       struct slave *slave)  in slave_oldest_target_arp_rx()  argument
526 	unsigned long ret = slave->target_last_arp_rx[0];  in slave_oldest_target_arp_rx()
528 	for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++)  in slave_oldest_target_arp_rx()
529 		if (time_before(slave->target_last_arp_rx[i], ret))  in slave_oldest_target_arp_rx()
530 			ret = slave->target_last_arp_rx[i];  in slave_oldest_target_arp_rx()
536 					struct slave *slave)  in slave_last_rx()  argument
538 	if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL)  in slave_last_rx()
539 		return slave_oldest_target_arp_rx(bond, slave);  in slave_last_rx()
541 	return slave->last_rx;  in slave_last_rx()
544 static inline void slave_update_last_tx(struct slave *slave)  in slave_update_last_tx()  argument
546 	WRITE_ONCE(slave->last_tx, jiffies);  in slave_update_last_tx()
549 static inline unsigned long slave_last_tx(struct slave *slave)  in slave_last_tx()  argument
551 	return READ_ONCE(slave->last_tx);  in slave_last_tx()
555 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave,  in bond_netpoll_send_skb()  argument
558 	return netpoll_send_skb(slave->np, skb);  in bond_netpoll_send_skb()
561 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave,  in bond_netpoll_send_skb()  argument
569 static inline void bond_set_slave_inactive_flags(struct slave *slave,  in bond_set_slave_inactive_flags()  argument
572 	if (!bond_is_lb(slave->bond))  in bond_set_slave_inactive_flags()
573 		bond_set_slave_state(slave, BOND_STATE_BACKUP, notify);  in bond_set_slave_inactive_flags()
574 	if (!slave->bond->params.all_slaves_active)  in bond_set_slave_inactive_flags()
575 		slave->inactive = 1;  in bond_set_slave_inactive_flags()
578 static inline void bond_set_slave_active_flags(struct slave *slave,  in bond_set_slave_active_flags()  argument
581 	bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify);  in bond_set_slave_active_flags()
582 	slave->inactive = 0;  in bond_set_slave_active_flags()
585 static inline bool bond_is_slave_inactive(struct slave *slave)  in bond_is_slave_inactive()  argument
587 	return slave->inactive;  in bond_is_slave_inactive()
590 static inline void bond_propose_link_state(struct slave *slave, int state)  in bond_propose_link_state()  argument
592 	slave->link_new_state = state;  in bond_propose_link_state()
595 static inline void bond_commit_link_state(struct slave *slave, bool notify)  in bond_commit_link_state()  argument
597 	if (slave->link_new_state == BOND_LINK_NOCHANGE)  in bond_commit_link_state()
600 	slave->link = slave->link_new_state;  in bond_commit_link_state()
602 		bond_queue_slave_event(slave);  in bond_commit_link_state()
603 		bond_lower_state_changed(slave);  in bond_commit_link_state()
604 		slave->should_notify_link = 0;  in bond_commit_link_state()
606 		if (slave->should_notify_link)  in bond_commit_link_state()
607 			slave->should_notify_link = 0;  in bond_commit_link_state()
609 			slave->should_notify_link = 1;  in bond_commit_link_state()
613 static inline void bond_set_slave_link_state(struct slave *slave, int state,  in bond_set_slave_link_state()  argument
616 	bond_propose_link_state(slave, state);  in bond_set_slave_link_state()
617 	bond_commit_link_state(slave, notify);  in bond_set_slave_link_state()
623 	struct slave *tmp;  in bond_slave_link_notify()
626 		if (tmp->should_notify_link) {  in bond_slave_link_notify()
629 			tmp->should_notify_link = 0;  in bond_slave_link_notify()
658 int bond_rcv_validate(const struct sk_buff *skb, struct bonding *bond, struct slave *slave);
664 int bond_sysfs_slave_add(struct slave *slave);
665 void bond_sysfs_slave_del(struct slave *slave);
672 void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
678 const char *bond_mode_name(int mode);
688 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave);
715 static inline struct slave *bond_slave_has_mac(struct bonding *bond,  in bond_slave_has_mac()
719 	struct slave *tmp;  in bond_slave_has_mac()
722 		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))  in bond_slave_has_mac()
732 	struct slave *tmp;  in bond_slave_has_mac_rx()
736 		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))  in bond_slave_has_mac_rx()
739 	if (netdev_uc_empty(bond->dev))  in bond_slave_has_mac_rx()
742 	netdev_for_each_uc_addr(ha, bond->dev)  in bond_slave_has_mac_rx()
743 		if (ether_addr_equal_64bits(mac, ha->addr))  in bond_slave_has_mac_rx()
750  * Returns -1 if not found, index if found
762 	return -1;  in bond_get_targets_ip()
776 	return -1;  in bond_get_targets_ip6()