/* SPDX-License-Identifier: GPL-1.0+ */ /* * Bond several ethernet interfaces into a Cisco, running 'Etherchannel'. * * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes * NCM: Network and Communications Management, Inc. * * BUT, I'm the one who modified it for ethernet, so: * (c) Copyright 1999, Thomas Davis, [email protected] * */ #ifndef _NET_BONDING_H #define _NET_BONDING_H #include <linux/timer.h> #include <linux/proc_fs.h> #include <linux/if_bonding.h> #include <linux/cpumask.h> #include <linux/in6.h> #include <linux/netpoll.h> #include <linux/inetdevice.h> #include <linux/etherdevice.h> #include <linux/reciprocal_div.h> #include <linux/if_link.h> #include <net/bond_3ad.h> #include <net/bond_alb.h> #include <net/bond_options.h> #include <net/ipv6.h> #include <net/addrconf.h> #define BOND_MAX_ARP_TARGETS … #define BOND_MAX_NS_TARGETS … #define BOND_DEFAULT_MIIMON … #ifndef __long_aligned #define __long_aligned … #endif #define slave_info(bond_dev, slave_dev, fmt, ...) … #define slave_warn(bond_dev, slave_dev, fmt, ...) … #define slave_dbg(bond_dev, slave_dev, fmt, ...) … #define slave_err(bond_dev, slave_dev, fmt, ...) … #define BOND_MODE(bond) … /* slave list primitives */ #define bond_slave_list(bond) … #define bond_has_slaves(bond) … /* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */ #define bond_first_slave(bond) … #define bond_last_slave(bond) … /* Caller must have rcu_read_lock */ #define bond_first_slave_rcu(bond) … #define bond_is_first_slave(bond, pos) … #define bond_is_last_slave(bond, pos) … /** * bond_for_each_slave - iterate over all slaves * @bond: the bond holding this list * @pos: current slave * @iter: list_head * iterator * * Caller must hold RTNL */ #define bond_for_each_slave(bond, pos, iter) … /* Caller must have rcu_read_lock */ #define bond_for_each_slave_rcu(bond, pos, iter) … #define BOND_XFRM_FEATURES … #ifdef CONFIG_NET_POLL_CONTROLLER extern atomic_t netpoll_block_tx; static inline void block_netpoll_tx(void) { … } static inline void unblock_netpoll_tx(void) { … } static inline int is_netpoll_tx_blocked(struct net_device *dev) { … } #else #define block_netpoll_tx … #define unblock_netpoll_tx … #define is_netpoll_tx_blocked … #endif struct bond_params { … }; struct slave { … }; static inline struct slave *to_slave(struct kobject *kobj) { … } struct bond_up_slave { … }; /* * Link pseudo-state only used internally by monitors */ #define BOND_LINK_NOCHANGE … struct bond_ipsec { … }; /* * Here are the locking policies for the two bonding locks: * Get rcu_read_lock when reading or RTNL when writing slave list. */ struct bonding { … }; #define bond_slave_get_rcu(dev) … #define bond_slave_get_rtnl(dev) … void bond_queue_slave_event(struct slave *slave); void bond_lower_state_changed(struct slave *slave); struct bond_vlan_tag { … }; /* * Returns NULL if the net_device does not belong to any of the bond's slaves * * Caller must hold bond lock for read */ static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, struct net_device *slave_dev) { … } static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) { … } static inline bool bond_should_override_tx_queue(struct bonding *bond) { … } static inline bool bond_is_lb(const struct bonding *bond) { … } static inline bool bond_needs_speed_duplex(const struct bonding *bond) { … } static inline bool bond_is_nondyn_tlb(const struct bonding *bond) { … } static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) { … } static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) { … } static inline bool bond_mode_uses_arp(int mode) { … } static inline bool bond_mode_uses_primary(int mode) { … } static inline bool bond_uses_primary(struct bonding *bond) { … } static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) { … } static inline bool bond_slave_is_up(struct slave *slave) { … } static inline void bond_set_active_slave(struct slave *slave) { … } static inline void bond_set_backup_slave(struct slave *slave) { … } static inline void bond_set_slave_state(struct slave *slave, int slave_state, bool notify) { … } static inline void bond_slave_state_change(struct bonding *bond) { … } static inline void bond_slave_state_notify(struct bonding *bond) { … } static inline int bond_slave_state(struct slave *slave) { … } static inline bool bond_is_active_slave(struct slave *slave) { … } static inline bool bond_slave_can_tx(struct slave *slave) { … } static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) { … } static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) { … } #define BOND_PRI_RESELECT_ALWAYS … #define BOND_PRI_RESELECT_BETTER … #define BOND_PRI_RESELECT_FAILURE … #define BOND_FOM_NONE … #define BOND_FOM_ACTIVE … #define BOND_FOM_FOLLOW … #define BOND_ARP_TARGETS_ANY … #define BOND_ARP_TARGETS_ALL … #define BOND_ARP_VALIDATE_NONE … #define BOND_ARP_VALIDATE_ACTIVE … #define BOND_ARP_VALIDATE_BACKUP … #define BOND_ARP_VALIDATE_ALL … #define BOND_ARP_FILTER … #define BOND_ARP_FILTER_ACTIVE … #define BOND_ARP_FILTER_BACKUP … #define BOND_SLAVE_NOTIFY_NOW … #define BOND_SLAVE_NOTIFY_LATER … static inline int slave_do_arp_validate(struct bonding *bond, struct slave *slave) { … } static inline int slave_do_arp_validate_only(struct bonding *bond) { … } static inline int bond_is_ip_target_ok(__be32 addr) { … } #if IS_ENABLED(CONFIG_IPV6) static inline int bond_is_ip6_target_ok(struct in6_addr *addr) { … } #endif /* Get the oldest arp which we've received on this slave for bond's * arp_targets. */ static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, struct slave *slave) { … } static inline unsigned long slave_last_rx(struct bonding *bond, struct slave *slave) { … } static inline void slave_update_last_tx(struct slave *slave) { … } static inline unsigned long slave_last_tx(struct slave *slave) { … } #ifdef CONFIG_NET_POLL_CONTROLLER static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, struct sk_buff *skb) { … } #else static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, struct sk_buff *skb) { BUG(); return NETDEV_TX_OK; } #endif static inline void bond_set_slave_inactive_flags(struct slave *slave, bool notify) { … } static inline void bond_set_slave_tx_disabled_flags(struct slave *slave, bool notify) { … } static inline void bond_set_slave_active_flags(struct slave *slave, bool notify) { … } static inline void bond_set_slave_rx_enabled_flags(struct slave *slave, bool notify) { … } static inline bool bond_is_slave_inactive(struct slave *slave) { … } static inline bool bond_is_slave_rx_disabled(struct slave *slave) { … } static inline void bond_propose_link_state(struct slave *slave, int state) { … } static inline void bond_commit_link_state(struct slave *slave, bool notify) { … } static inline void bond_set_slave_link_state(struct slave *slave, int state, bool notify) { … } static inline void bond_slave_link_notify(struct bonding *bond) { … } static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) { … } struct bond_net { … }; int bond_rcv_validate(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); int bond_create(struct net *net, const char *name); int bond_create_sysfs(struct bond_net *net); void bond_destroy_sysfs(struct bond_net *net); void bond_prepare_sysfs_group(struct bonding *bond); int bond_sysfs_slave_add(struct slave *slave); void bond_sysfs_slave_del(struct slave *slave); void bond_xdp_set_features(struct net_device *bond_dev); int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, struct netlink_ext_ack *extack); int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); int bond_set_carrier(struct bonding *bond); void bond_select_active_slave(struct bonding *bond); void bond_change_active_slave(struct bonding *bond, struct slave *new_active); void bond_create_debugfs(void); void bond_destroy_debugfs(void); void bond_debug_register(struct bonding *bond); void bond_debug_unregister(struct bonding *bond); void bond_debug_reregister(struct bonding *bond); const char *bond_mode_name(int mode); void bond_setup(struct net_device *bond_dev); unsigned int bond_get_num_tx_queues(void); int bond_netlink_init(void); void bond_netlink_fini(void); struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); const char *bond_slave_link_status(s8 link); struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, struct net_device *end_dev, int level); int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); void bond_work_init_all(struct bonding *bond); #ifdef CONFIG_PROC_FS void bond_create_proc_entry(struct bonding *bond); void bond_remove_proc_entry(struct bonding *bond); void bond_create_proc_dir(struct bond_net *bn); void bond_destroy_proc_dir(struct bond_net *bn); #else static inline void bond_create_proc_entry(struct bonding *bond) { } static inline void bond_remove_proc_entry(struct bonding *bond) { } static inline void bond_create_proc_dir(struct bond_net *bn) { } static inline void bond_destroy_proc_dir(struct bond_net *bn) { } #endif static inline struct slave *bond_slave_has_mac(struct bonding *bond, const u8 *mac) { … } /* Caller must hold rcu_read_lock() for read */ static inline bool bond_slave_has_mac_rcu(struct bonding *bond, const u8 *mac) { … } /* Check if the ip is present in arp ip list, or first free slot if ip == 0 * Returns -1 if not found, index if found */ static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) { … } #if IS_ENABLED(CONFIG_IPV6) static inline int bond_get_targets_ip6(struct in6_addr *targets, struct in6_addr *ip) { … } #endif /* exported from bond_main.c */ extern unsigned int bond_net_id; /* exported from bond_netlink.c */ extern struct rtnl_link_ops bond_link_ops; /* exported from bond_sysfs_slave.c */ extern const struct sysfs_ops slave_sysfs_ops; /* exported from bond_3ad.c */ extern const u8 lacpdu_mcast_addr[]; static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) { … } #endif /* _NET_BONDING_H */
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