4  * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes
42 	netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
44 	netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
46 	netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
48 	netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
50 #define BOND_MODE(bond) ((bond)->params.mode)
52 /* slave list primitives */
53 #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower)
60 		netdev_adjacent_get_private(bond_slave_list(bond)->next) : \
64 		netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \
69 	netdev_lower_get_first_private_rcu(bond->dev)
75  * bond_for_each_slave - iterate over all slaves
77  * @pos:	current slave
83 	netdev_for_each_lower_private((bond)->dev, pos, iter)
87 	netdev_for_each_lower_private_rcu((bond)->dev, pos, iter)
120 	int mode;  member
153 struct slave {  struct
154 	struct net_device *dev; /* first - useful for panic debug */
163 	u8     backup:1,   /* indicates backup slave. Value corresponds with  argument
165 	       inactive:1, /* indicates inactive slave */  argument
184 static inline struct slave *to_slave(struct kobject *kobj)  in to_slave()  argument
186 	return container_of(kobj, struct slave, kobj);  in to_slave()
192 	struct slave	*arr[];
196  * Link pseudo-state only used internally by monitors
198 #define BOND_LINK_NOCHANGE -1
207  * Get rcu_read_lock when reading or RTNL when writing slave list.
210 	struct   net_device *dev; /* first - useful for panic debug */
211 	struct   slave __rcu *curr_active_slave;
212 	struct   slave __rcu *current_arp_slave;
213 	struct   slave __rcu *primary_slave;
219 			      struct slave *);
220 	/* mode_lock is used for mode-specific locking needs, currently used by:
221 	 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and
224 	 * TLB mode (5) - to sync the use and modifications of its hash table
225 	 * ALB mode (6) - to sync the use and modifications of its hash table
261 	((struct slave *) rcu_dereference(dev->rx_handler_data))
264 	((struct slave *) rtnl_dereference(dev->rx_handler_data))
266 void bond_queue_slave_event(struct slave *slave);
267 void bond_lower_state_changed(struct slave *slave);
281 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond,  in bond_get_slave_by_dev()
284 	return netdev_lower_dev_get_private(bond->dev, slave_dev);  in bond_get_slave_by_dev()
287 static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)  in bond_get_bond_by_slave()  argument
289 	return slave->bond;  in bond_get_bond_by_slave()
311 	return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0);  in bond_is_nondyn_tlb()
329 static inline bool bond_mode_uses_arp(int mode)  in bond_mode_uses_arp()  argument
331 	return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB &&  in bond_mode_uses_arp()
332 	       mode != BOND_MODE_ALB;  in bond_mode_uses_arp()
335 static inline bool bond_mode_uses_primary(int mode)  in bond_mode_uses_primary()  argument
337 	return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB ||  in bond_mode_uses_primary()
338 	       mode == BOND_MODE_ALB;  in bond_mode_uses_primary()
348 	struct slave *slave = rcu_dereference(bond->curr_active_slave);  in bond_option_active_slave_get_rcu()  local
350 	return bond_uses_primary(bond) && slave ? slave->dev : NULL;  in bond_option_active_slave_get_rcu()
353 static inline bool bond_slave_is_up(struct slave *slave)  in bond_slave_is_up()  argument
355 	return netif_running(slave->dev) && netif_carrier_ok(slave->dev);  in bond_slave_is_up()
358 static inline void bond_set_active_slave(struct slave *slave)  in bond_set_active_slave()  argument
360 	if (slave->backup) {  in bond_set_active_slave()
361 		slave->backup = 0;  in bond_set_active_slave()
362 		bond_queue_slave_event(slave);  in bond_set_active_slave()
363 		bond_lower_state_changed(slave);  in bond_set_active_slave()
367 static inline void bond_set_backup_slave(struct slave *slave)  in bond_set_backup_slave()  argument
369 	if (!slave->backup) {  in bond_set_backup_slave()
370 		slave->backup = 1;  in bond_set_backup_slave()
371 		bond_queue_slave_event(slave);  in bond_set_backup_slave()
372 		bond_lower_state_changed(slave);  in bond_set_backup_slave()
376 static inline void bond_set_slave_state(struct slave *slave,  in bond_set_slave_state()  argument
379 	if (slave->backup == slave_state)  in bond_set_slave_state()
382 	slave->backup = slave_state;  in bond_set_slave_state()
384 		bond_lower_state_changed(slave);  in bond_set_slave_state()
385 		bond_queue_slave_event(slave);  in bond_set_slave_state()
386 		slave->should_notify = 0;  in bond_set_slave_state()
388 		if (slave->should_notify)  in bond_set_slave_state()
389 			slave->should_notify = 0;  in bond_set_slave_state()
391 			slave->should_notify = 1;  in bond_set_slave_state()
398 	struct slave *tmp;  in bond_slave_state_change()
401 		if (tmp->link == BOND_LINK_UP)  in bond_slave_state_change()
403 		else if (tmp->link == BOND_LINK_DOWN)  in bond_slave_state_change()
411 	struct slave *tmp;  in bond_slave_state_notify()
414 		if (tmp->should_notify) {  in bond_slave_state_notify()
416 			tmp->should_notify = 0;  in bond_slave_state_notify()
421 static inline int bond_slave_state(struct slave *slave)  in bond_slave_state()  argument
423 	return slave->backup;  in bond_slave_state()
426 static inline bool bond_is_active_slave(struct slave *slave)  in bond_is_active_slave()  argument
428 	return !bond_slave_state(slave);  in bond_is_active_slave()
431 static inline bool bond_slave_can_tx(struct slave *slave)  in bond_slave_can_tx()  argument
433 	return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP &&  in bond_slave_can_tx()
434 	       bond_is_active_slave(slave);  in bond_slave_can_tx()
439 	struct slave *slave;  in bond_is_active_slave_dev()  local
443 	slave = bond_slave_get_rcu(slave_dev);  in bond_is_active_slave_dev()
444 	active = bond_is_active_slave(slave);  in bond_is_active_slave_dev()
486 					struct slave *slave)  in slave_do_arp_validate()  argument
488 	return bond->params.arp_validate & (1 << bond_slave_state(slave));  in slave_do_arp_validate()
493 	return bond->params.arp_validate & BOND_ARP_FILTER;  in slave_do_arp_validate_only()
501 /* Get the oldest arp which we've received on this slave for bond's
505 						       struct slave *slave)  in slave_oldest_target_arp_rx()  argument
508 	unsigned long ret = slave->target_last_arp_rx[0];  in slave_oldest_target_arp_rx()
510 	for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++)  in slave_oldest_target_arp_rx()
511 		if (time_before(slave->target_last_arp_rx[i], ret))  in slave_oldest_target_arp_rx()
512 			ret = slave->target_last_arp_rx[i];  in slave_oldest_target_arp_rx()
518 					struct slave *slave)  in slave_last_rx()  argument
520 	if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL)  in slave_last_rx()
521 		return slave_oldest_target_arp_rx(bond, slave);  in slave_last_rx()
523 	return slave->last_rx;  in slave_last_rx()
527 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave,  in bond_netpoll_send_skb()  argument
530 	return netpoll_send_skb(slave->np, skb);  in bond_netpoll_send_skb()
533 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave,  in bond_netpoll_send_skb()  argument
541 static inline void bond_set_slave_inactive_flags(struct slave *slave,  in bond_set_slave_inactive_flags()  argument
544 	if (!bond_is_lb(slave->bond))  in bond_set_slave_inactive_flags()
545 		bond_set_slave_state(slave, BOND_STATE_BACKUP, notify);  in bond_set_slave_inactive_flags()
546 	if (!slave->bond->params.all_slaves_active)  in bond_set_slave_inactive_flags()
547 		slave->inactive = 1;  in bond_set_slave_inactive_flags()
550 static inline void bond_set_slave_active_flags(struct slave *slave,  in bond_set_slave_active_flags()  argument
553 	bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify);  in bond_set_slave_active_flags()
554 	slave->inactive = 0;  in bond_set_slave_active_flags()
557 static inline bool bond_is_slave_inactive(struct slave *slave)  in bond_is_slave_inactive()  argument
559 	return slave->inactive;  in bond_is_slave_inactive()
562 static inline void bond_propose_link_state(struct slave *slave, int state)  in bond_propose_link_state()  argument
564 	slave->link_new_state = state;  in bond_propose_link_state()
567 static inline void bond_commit_link_state(struct slave *slave, bool notify)  in bond_commit_link_state()  argument
569 	if (slave->link_new_state == BOND_LINK_NOCHANGE)  in bond_commit_link_state()
572 	slave->link = slave->link_new_state;  in bond_commit_link_state()
574 		bond_queue_slave_event(slave);  in bond_commit_link_state()
575 		bond_lower_state_changed(slave);  in bond_commit_link_state()
576 		slave->should_notify_link = 0;  in bond_commit_link_state()
578 		if (slave->should_notify_link)  in bond_commit_link_state()
579 			slave->should_notify_link = 0;  in bond_commit_link_state()
581 			slave->should_notify_link = 1;  in bond_commit_link_state()
585 static inline void bond_set_slave_link_state(struct slave *slave, int state,  in bond_set_slave_link_state()  argument
588 	bond_propose_link_state(slave, state);  in bond_set_slave_link_state()
589 	bond_commit_link_state(slave, notify);  in bond_set_slave_link_state()
595 	struct slave *tmp;  in bond_slave_link_notify()
598 		if (tmp->should_notify_link) {  in bond_slave_link_notify()
601 			tmp->should_notify_link = 0;  in bond_slave_link_notify()
630 int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave);
636 int bond_sysfs_slave_add(struct slave *slave);
637 void bond_sysfs_slave_del(struct slave *slave);
644 void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
650 const char *bond_mode_name(int mode);
660 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave);
687 static inline struct slave *bond_slave_has_mac(struct bonding *bond,  in bond_slave_has_mac()
691 	struct slave *tmp;  in bond_slave_has_mac()
694 		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))  in bond_slave_has_mac()
701 static inline struct slave *bond_slave_has_mac_rcu(struct bonding *bond,  in bond_slave_has_mac_rcu()
705 	struct slave *tmp;  in bond_slave_has_mac_rcu()
708 		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))  in bond_slave_has_mac_rcu()
718 	struct slave *tmp;  in bond_slave_has_mac_rx()
722 		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))  in bond_slave_has_mac_rx()
725 	if (netdev_uc_empty(bond->dev))  in bond_slave_has_mac_rx()
728 	netdev_for_each_uc_addr(ha, bond->dev)  in bond_slave_has_mac_rx()
729 		if (ether_addr_equal_64bits(mac, ha->addr))  in bond_slave_has_mac_rx()
736  * Returns -1 if not found, index if found
748 	return -1;  in bond_get_targets_ip()
762 	atomic_long_inc(&dev->tx_dropped);  in bond_tx_drop()