2  * Bond several ethernet interfaces into a Cisco, running 'Etherchannel'.
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)  argument
53 #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower)  argument
55 #define bond_has_slaves(bond) !list_empty(bond_slave_list(bond))  argument
58 #define bond_first_slave(bond) \  argument
59 	(bond_has_slaves(bond) ? \
60 		netdev_adjacent_get_private(bond_slave_list(bond)->next) : \
62 #define bond_last_slave(bond) \  argument
63 	(bond_has_slaves(bond) ? \
64 		netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \
68 #define bond_first_slave_rcu(bond) \  argument
69 	netdev_lower_get_first_private_rcu(bond->dev)
71 #define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond))  argument
72 #define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond))  argument
75  * bond_for_each_slave - iterate over all slaves
76  * @bond:	the bond holding this list
82 #define bond_for_each_slave(bond, pos, iter) \  argument
83 	netdev_for_each_lower_private((bond)->dev, pos, iter)
86 #define bond_for_each_slave_rcu(bond, pos, iter) \  argument
87 	netdev_for_each_lower_private_rcu((bond)->dev, pos, iter)
133 	char primary[IFNAMSIZ];  member
156 	struct net_device *dev; /* first - useful for panic debug */
157 	struct bonding *bond; /* our master */  member
198  * Link pseudo-state only used internally by monitors
200 #define BOND_LINK_NOCHANGE -1
212 	struct   net_device *dev; /* first - useful for panic debug */
223 	/* mode_lock is used for mode-specific locking needs, currently used by:
224 	 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and
227 	 * TLB mode (5) - to sync the use and modifications of its hash table
228 	 * ALB mode (6) - to sync the use and modifications of its hash table
263 	((struct slave *) rcu_dereference(dev->rx_handler_data))
266 	((struct slave *) rtnl_dereference(dev->rx_handler_data))
277  * Returns NULL if the net_device does not belong to any of the bond's slaves
279  * Caller must hold bond lock for read
281 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond,  in bond_get_slave_by_dev()  argument
284 	return netdev_lower_dev_get_private(bond->dev, slave_dev);  in bond_get_slave_by_dev()
289 	return slave->bond;  in bond_get_bond_by_slave()
292 static inline bool bond_should_override_tx_queue(struct bonding *bond)  in bond_should_override_tx_queue()  argument
294 	return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP ||  in bond_should_override_tx_queue()
295 	       BOND_MODE(bond) == BOND_MODE_ROUNDROBIN;  in bond_should_override_tx_queue()
298 static inline bool bond_is_lb(const struct bonding *bond)  in bond_is_lb()  argument
300 	return BOND_MODE(bond) == BOND_MODE_TLB ||  in bond_is_lb()
301 	       BOND_MODE(bond) == BOND_MODE_ALB;  in bond_is_lb()
304 static inline bool bond_needs_speed_duplex(const struct bonding *bond)  in bond_needs_speed_duplex()  argument
306 	return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond);  in bond_needs_speed_duplex()
309 static inline bool bond_is_nondyn_tlb(const struct bonding *bond)  in bond_is_nondyn_tlb()  argument
311 	return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0);  in bond_is_nondyn_tlb()
314 static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond)  in bond_mode_can_use_xmit_hash()  argument
316 	return (BOND_MODE(bond) == BOND_MODE_8023AD ||  in bond_mode_can_use_xmit_hash()
317 		BOND_MODE(bond) == BOND_MODE_XOR ||  in bond_mode_can_use_xmit_hash()
318 		BOND_MODE(bond) == BOND_MODE_TLB ||  in bond_mode_can_use_xmit_hash()
319 		BOND_MODE(bond) == BOND_MODE_ALB);  in bond_mode_can_use_xmit_hash()
322 static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond)  in bond_mode_uses_xmit_hash()  argument
324 	return (BOND_MODE(bond) == BOND_MODE_8023AD ||  in bond_mode_uses_xmit_hash()
325 		BOND_MODE(bond) == BOND_MODE_XOR ||  in bond_mode_uses_xmit_hash()
326 		bond_is_nondyn_tlb(bond));  in bond_mode_uses_xmit_hash()
341 static inline bool bond_uses_primary(struct bonding *bond)  in bond_uses_primary()  argument
343 	return bond_mode_uses_primary(BOND_MODE(bond));  in bond_uses_primary()
346 static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)  in bond_option_active_slave_get_rcu()  argument
348 	struct slave *slave = rcu_dereference(bond->curr_active_slave);  in bond_option_active_slave_get_rcu()
350 	return bond_uses_primary(bond) && slave ? slave->dev : NULL;  in bond_option_active_slave_get_rcu()
355 	return netif_running(slave->dev) && netif_carrier_ok(slave->dev);  in bond_slave_is_up()
360 	if (slave->backup) {  in bond_set_active_slave()
361 		slave->backup = 0;  in bond_set_active_slave()
369 	if (!slave->backup) {  in bond_set_backup_slave()
370 		slave->backup = 1;  in bond_set_backup_slave()
379 	if (slave->backup == slave_state)  in bond_set_slave_state()
382 	slave->backup = slave_state;  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()
395 static inline void bond_slave_state_change(struct bonding *bond)  in bond_slave_state_change()  argument
400 	bond_for_each_slave(bond, tmp, iter) {  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()
408 static inline void bond_slave_state_notify(struct bonding *bond)  in bond_slave_state_notify()  argument
413 	bond_for_each_slave(bond, tmp, iter) {  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()
423 	return slave->backup;  in bond_slave_state()
433 	return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP &&  in bond_slave_can_tx()
485 static inline int slave_do_arp_validate(struct bonding *bond,  in slave_do_arp_validate()  argument
488 	return bond->params.arp_validate & (1 << bond_slave_state(slave));  in slave_do_arp_validate()
491 static inline int slave_do_arp_validate_only(struct bonding *bond)  in slave_do_arp_validate_only()  argument
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
504 static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond,  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()
517 static inline unsigned long slave_last_rx(struct bonding *bond,  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()
530 	return netpoll_send_skb(slave->np, skb);  in bond_netpoll_send_skb()
544 	if (!bond_is_lb(slave->bond))  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()
554 	slave->inactive = 0;  in bond_set_slave_active_flags()
559 	return slave->inactive;  in bond_is_slave_inactive()
564 	slave->link_new_state = state;  in bond_propose_link_state()
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()
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()
592 static inline void bond_slave_link_notify(struct bonding *bond)  in bond_slave_link_notify()  argument
597 	bond_for_each_slave(bond, tmp, iter) {  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);
631 netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave…
635 void bond_prepare_sysfs_group(struct bonding *bond);
641 u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb);
642 int bond_set_carrier(struct bonding *bond);
643 void bond_select_active_slave(struct bonding *bond);
644 void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
647 void bond_debug_register(struct bonding *bond);
648 void bond_debug_unregister(struct bonding *bond);
649 void bond_debug_reregister(struct bonding *bond);
655 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);
660 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave);
661 void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay);
662 void bond_work_init_all(struct bonding *bond);
665 void bond_create_proc_entry(struct bonding *bond);
666 void bond_remove_proc_entry(struct bonding *bond);
670 static inline void bond_create_proc_entry(struct bonding *bond)  in bond_create_proc_entry()  argument
674 static inline void bond_remove_proc_entry(struct bonding *bond)  in bond_remove_proc_entry()  argument
687 static inline struct slave *bond_slave_has_mac(struct bonding *bond,  in bond_slave_has_mac()  argument
693 	bond_for_each_slave(bond, tmp, iter)  in bond_slave_has_mac()
694 		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))  in bond_slave_has_mac()
701 static inline bool bond_slave_has_mac_rcu(struct bonding *bond, const u8 *mac)  in bond_slave_has_mac_rcu()  argument
706 	bond_for_each_slave_rcu(bond, tmp, iter)  in bond_slave_has_mac_rcu()
707 		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))  in bond_slave_has_mac_rcu()
713  * Returns -1 if not found, index if found
725 	return -1;  in bond_get_targets_ip()
749 	atomic_long_inc(&dev->tx_dropped);  in bond_tx_drop()