1 /* SPDX-License-Identifier: GPL-1.0+ */
5  * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes
43 	netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
45 	netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
47 	netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
49 	netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
51 #define BOND_MODE(bond) ((bond)->params.mode)
53 /* slave list primitives */
54 #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower)
61 		netdev_adjacent_get_private(bond_slave_list(bond)->next) : \
65 		netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \
70 	netdev_lower_get_first_private_rcu(bond->dev)
76  * bond_for_each_slave - iterate over all slaves
78  * @pos:	current slave
84 	netdev_for_each_lower_private((bond)->dev, pos, iter)
88 	netdev_for_each_lower_private_rcu((bond)->dev, pos, iter)
106 static inline int is_netpoll_tx_blocked(struct net_device *dev)  in is_netpoll_tx_blocked()  argument
108 	if (unlikely(netpoll_tx_running(dev)))  in is_netpoll_tx_blocked()
115 #define is_netpoll_tx_blocked(dev) (0)  argument
156 struct slave {  struct
157 	struct net_device *dev; /* first - useful for panic debug */  member
167 	u8     backup:1,   /* indicates backup slave. Value corresponds with  argument
169 	       inactive:1, /* indicates inactive slave */  argument
189 static inline struct slave *to_slave(struct kobject *kobj)  in to_slave()  argument
191 	return container_of(kobj, struct slave, kobj);  in to_slave()
197 	struct slave	*arr[];
201  * Link pseudo-state only used internally by monitors
203 #define BOND_LINK_NOCHANGE -1
212  * Get rcu_read_lock when reading or RTNL when writing slave list.
215 	struct   net_device *dev; /* first - useful for panic debug */  member
216 	struct   slave __rcu *curr_active_slave;
217 	struct   slave __rcu *current_arp_slave;
218 	struct   slave __rcu *primary_slave;
225 			      struct slave *);
226 	/* mode_lock is used for mode-specific locking needs, currently used by:
227 	 * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and
230 	 * TLB mode (5) - to sync the use and modifications of its hash table
231 	 * ALB mode (6) - to sync the use and modifications of its hash table
266 #define bond_slave_get_rcu(dev) \  argument
267 	((struct slave *) rcu_dereference(dev->rx_handler_data))
269 #define bond_slave_get_rtnl(dev) \  argument
270 	((struct slave *) rtnl_dereference(dev->rx_handler_data))
272 void bond_queue_slave_event(struct slave *slave);
273 void bond_lower_state_changed(struct slave *slave);
285 static inline struct slave *bond_get_slave_by_dev(struct bonding *bond,  in bond_get_slave_by_dev()
288 	return netdev_lower_dev_get_private(bond->dev, slave_dev);  in bond_get_slave_by_dev()
291 static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)  in bond_get_bond_by_slave()  argument
293 	return slave->bond;  in bond_get_bond_by_slave()
315 	return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0);  in bond_is_nondyn_tlb()
352 	struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave);  in bond_option_active_slave_get_rcu()  local
354 	return bond_uses_primary(bond) && slave ? slave->dev : NULL;  in bond_option_active_slave_get_rcu()
357 static inline bool bond_slave_is_up(struct slave *slave)  in bond_slave_is_up()  argument
359 	return netif_running(slave->dev) && netif_carrier_ok(slave->dev);  in bond_slave_is_up()
362 static inline void bond_set_active_slave(struct slave *slave)  in bond_set_active_slave()  argument
364 	if (slave->backup) {  in bond_set_active_slave()
365 		slave->backup = 0;  in bond_set_active_slave()
366 		bond_queue_slave_event(slave);  in bond_set_active_slave()
367 		bond_lower_state_changed(slave);  in bond_set_active_slave()
371 static inline void bond_set_backup_slave(struct slave *slave)  in bond_set_backup_slave()  argument
373 	if (!slave->backup) {  in bond_set_backup_slave()
374 		slave->backup = 1;  in bond_set_backup_slave()
375 		bond_queue_slave_event(slave);  in bond_set_backup_slave()
376 		bond_lower_state_changed(slave);  in bond_set_backup_slave()
380 static inline void bond_set_slave_state(struct slave *slave,  in bond_set_slave_state()  argument
383 	if (slave->backup == slave_state)  in bond_set_slave_state()
386 	slave->backup = slave_state;  in bond_set_slave_state()
388 		bond_lower_state_changed(slave);  in bond_set_slave_state()
389 		bond_queue_slave_event(slave);  in bond_set_slave_state()
390 		slave->should_notify = 0;  in bond_set_slave_state()
392 		if (slave->should_notify)  in bond_set_slave_state()
393 			slave->should_notify = 0;  in bond_set_slave_state()
395 			slave->should_notify = 1;  in bond_set_slave_state()
402 	struct slave *tmp;  in bond_slave_state_change()
405 		if (tmp->link == BOND_LINK_UP)  in bond_slave_state_change()
407 		else if (tmp->link == BOND_LINK_DOWN)  in bond_slave_state_change()
415 	struct slave *tmp;  in bond_slave_state_notify()
418 		if (tmp->should_notify) {  in bond_slave_state_notify()
420 			tmp->should_notify = 0;  in bond_slave_state_notify()
425 static inline int bond_slave_state(struct slave *slave)  in bond_slave_state()  argument
427 	return slave->backup;  in bond_slave_state()
430 static inline bool bond_is_active_slave(struct slave *slave)  in bond_is_active_slave()  argument
432 	return !bond_slave_state(slave);  in bond_is_active_slave()
435 static inline bool bond_slave_can_tx(struct slave *slave)  in bond_slave_can_tx()  argument
437 	return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP &&  in bond_slave_can_tx()
438 	       bond_is_active_slave(slave);  in bond_slave_can_tx()
443 	struct slave *slave;  in bond_is_active_slave_dev()  local
447 	slave = bond_slave_get_rcu(slave_dev);  in bond_is_active_slave_dev()
448 	active = bond_is_active_slave(slave);  in bond_is_active_slave_dev()
490 					struct slave *slave)  in slave_do_arp_validate()  argument
492 	return bond->params.arp_validate & (1 << bond_slave_state(slave));  in slave_do_arp_validate()
497 	return bond->params.arp_validate & BOND_ARP_FILTER;  in slave_do_arp_validate_only()
514 /* Get the oldest arp which we've received on this slave for bond's
518 						       struct slave *slave)  in slave_oldest_target_arp_rx()  argument
521 	unsigned long ret = slave->target_last_arp_rx[0];  in slave_oldest_target_arp_rx()
523 	for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++)  in slave_oldest_target_arp_rx()
524 		if (time_before(slave->target_last_arp_rx[i], ret))  in slave_oldest_target_arp_rx()
525 			ret = slave->target_last_arp_rx[i];  in slave_oldest_target_arp_rx()
531 					struct slave *slave)  in slave_last_rx()  argument
533 	if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL)  in slave_last_rx()
534 		return slave_oldest_target_arp_rx(bond, slave);  in slave_last_rx()
536 	return slave->last_rx;  in slave_last_rx()
539 static inline void slave_update_last_tx(struct slave *slave)  in slave_update_last_tx()  argument
541 	WRITE_ONCE(slave->last_tx, jiffies);  in slave_update_last_tx()
544 static inline unsigned long slave_last_tx(struct slave *slave)  in slave_last_tx()  argument
546 	return READ_ONCE(slave->last_tx);  in slave_last_tx()
550 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave,  in bond_netpoll_send_skb()  argument
553 	return netpoll_send_skb(slave->np, skb);  in bond_netpoll_send_skb()
556 static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave,  in bond_netpoll_send_skb()  argument
564 static inline void bond_set_slave_inactive_flags(struct slave *slave,  in bond_set_slave_inactive_flags()  argument
567 	if (!bond_is_lb(slave->bond))  in bond_set_slave_inactive_flags()
568 		bond_set_slave_state(slave, BOND_STATE_BACKUP, notify);  in bond_set_slave_inactive_flags()
569 	if (!slave->bond->params.all_slaves_active)  in bond_set_slave_inactive_flags()
570 		slave->inactive = 1;  in bond_set_slave_inactive_flags()
573 static inline void bond_set_slave_active_flags(struct slave *slave,  in bond_set_slave_active_flags()  argument
576 	bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify);  in bond_set_slave_active_flags()
577 	slave->inactive = 0;  in bond_set_slave_active_flags()
580 static inline bool bond_is_slave_inactive(struct slave *slave)  in bond_is_slave_inactive()  argument
582 	return slave->inactive;  in bond_is_slave_inactive()
585 static inline void bond_propose_link_state(struct slave *slave, int state)  in bond_propose_link_state()  argument
587 	slave->link_new_state = state;  in bond_propose_link_state()
590 static inline void bond_commit_link_state(struct slave *slave, bool notify)  in bond_commit_link_state()  argument
592 	if (slave->link_new_state == BOND_LINK_NOCHANGE)  in bond_commit_link_state()
595 	slave->link = slave->link_new_state;  in bond_commit_link_state()
597 		bond_queue_slave_event(slave);  in bond_commit_link_state()
598 		bond_lower_state_changed(slave);  in bond_commit_link_state()
599 		slave->should_notify_link = 0;  in bond_commit_link_state()
601 		if (slave->should_notify_link)  in bond_commit_link_state()
602 			slave->should_notify_link = 0;  in bond_commit_link_state()
604 			slave->should_notify_link = 1;  in bond_commit_link_state()
608 static inline void bond_set_slave_link_state(struct slave *slave, int state,  in bond_set_slave_link_state()  argument
611 	bond_propose_link_state(slave, state);  in bond_set_slave_link_state()
612 	bond_commit_link_state(slave, notify);  in bond_set_slave_link_state()
618 	struct slave *tmp;  in bond_slave_link_notify()
621 		if (tmp->should_notify_link) {  in bond_slave_link_notify()
624 			tmp->should_notify_link = 0;  in bond_slave_link_notify()
629 static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local)  in bond_confirm_addr()  argument
635 	in_dev = __in_dev_get_rcu(dev);  in bond_confirm_addr()
638 		addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local,  in bond_confirm_addr()
653 int bond_rcv_validate(const struct sk_buff *skb, struct bonding *bond, struct slave *slave);
659 int bond_sysfs_slave_add(struct slave *slave);
660 void bond_sysfs_slave_del(struct slave *slave);
668 void bond_change_active_slave(struct bonding *bond, struct slave *new_active);
684 int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave);
711 static inline struct slave *bond_slave_has_mac(struct bonding *bond,  in bond_slave_has_mac()
715 	struct slave *tmp;  in bond_slave_has_mac()
718 		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))  in bond_slave_has_mac()
728 	struct slave *tmp;  in bond_slave_has_mac_rcu()
731 		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))  in bond_slave_has_mac_rcu()
737  * Returns -1 if not found, index if found
749 	return -1;  in bond_get_targets_ip()
767 	return -1;  in bond_get_targets_ip6()
783 static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb)  in bond_tx_drop()  argument
785 	dev_core_stats_tx_dropped_inc(dev);  in bond_tx_drop()