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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#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 16#define BOND_MAX_NS_TARGETS BOND_MAX_ARP_TARGETS
#define BOND_DEFAULT_MIIMON 100
#ifndef __long_aligned#define __long_aligned __attribute__((aligned((sizeof(long)))))#endif
#define slave_info(bond_dev, slave_dev, fmt, ...) \ netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)#define slave_warn(bond_dev, slave_dev, fmt, ...) \ netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)#define slave_dbg(bond_dev, slave_dev, fmt, ...) \ netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)#define slave_err(bond_dev, slave_dev, fmt, ...) \ netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__)
#define BOND_MODE(bond) ((bond)->params.mode)
/* slave list primitives */#define bond_slave_list(bond) (&(bond)->dev->adj_list.lower)
#define bond_has_slaves(bond) !list_empty(bond_slave_list(bond))
/* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */#define bond_first_slave(bond) \ (bond_has_slaves(bond) ? \ netdev_adjacent_get_private(bond_slave_list(bond)->next) : \ NULL)#define bond_last_slave(bond) \ (bond_has_slaves(bond) ? \ netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \ NULL)
/* Caller must have rcu_read_lock */#define bond_first_slave_rcu(bond) \ netdev_lower_get_first_private_rcu(bond->dev)
/** * 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) \ netdev_for_each_lower_private((bond)->dev, pos, iter)
/* Caller must have rcu_read_lock */#define bond_for_each_slave_rcu(bond, pos, iter) \ netdev_for_each_lower_private_rcu((bond)->dev, pos, iter)
#define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ NETIF_F_GSO_ESP)
#ifdef CONFIG_NET_POLL_CONTROLLERDECLARE_STATIC_KEY_FALSE(netpoll_block_tx);
static inline void block_netpoll_tx(void){ static_branch_inc(&netpoll_block_tx);}
static inline void unblock_netpoll_tx(void){ static_branch_dec(&netpoll_block_tx);}
static inline int is_netpoll_tx_blocked(struct net_device *dev){ if (static_branch_unlikely(&netpoll_block_tx)) return netpoll_tx_running(dev); return 0;}#else#define block_netpoll_tx()#define unblock_netpoll_tx()#define is_netpoll_tx_blocked(dev) (0)#endif
DECLARE_STATIC_KEY_FALSE(bond_bcast_neigh_enabled);
struct bond_params { int mode; int xmit_policy; int miimon; u8 num_peer_notif; u8 missed_max; int arp_interval; int arp_validate; int arp_all_targets; int fail_over_mac; int updelay; int downdelay; int peer_notif_delay; int lacp_active; int lacp_fast; int lacp_strict; unsigned int min_links; int ad_select; char primary[IFNAMSIZ]; int primary_reselect; __be32 arp_targets[BOND_MAX_ARP_TARGETS]; int tx_queues; int all_slaves_active; int resend_igmp; int lp_interval; int packets_per_slave; int tlb_dynamic_lb; struct reciprocal_value reciprocal_packets_per_slave; u16 ad_actor_sys_prio; u16 ad_user_port_key;#if IS_ENABLED(CONFIG_IPV6) struct in6_addr ns_targets[BOND_MAX_NS_TARGETS];#endif int coupled_control; int broadcast_neighbor;
/* 2 bytes of padding : see ether_addr_equal_64bits() */ u8 ad_actor_system[ETH_ALEN + 2];};
struct slave { struct net_device *dev; /* first - useful for panic debug */ struct bonding *bond; /* our master */ int delay; /* all 4 in jiffies */ unsigned long last_link_up; unsigned long last_tx; unsigned long last_rx; unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; s8 link; /* one of BOND_LINK_XXXX */ s8 link_new_state; /* one of BOND_LINK_XXXX */ u8 backup:1, /* indicates backup slave. Value corresponds with BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ inactive:1, /* indicates inactive slave */ rx_disabled:1, /* indicates whether slave's Rx is disabled */ should_notify:1, /* indicates whether the state changed */ should_notify_link:1; /* indicates whether the link changed */ u8 duplex; u32 original_mtu; u32 link_failure_count; u32 speed; u16 queue_id; u8 perm_hwaddr[MAX_ADDR_LEN]; int prio; struct ad_slave_info *ad_info; struct tlb_slave_info tlb_info;#ifdef CONFIG_NET_POLL_CONTROLLER struct netpoll *np;#endif struct delayed_work notify_work; struct kobject kobj; struct rtnl_link_stats64 slave_stats;};
static inline struct slave *to_slave(struct kobject *kobj){ return container_of(kobj, struct slave, kobj);}
struct bond_up_slave { unsigned int count; struct rcu_head rcu; struct slave *arr[];};
/* * Link pseudo-state only used internally by monitors */#define BOND_LINK_NOCHANGE -1
struct bond_ipsec { struct list_head list; struct xfrm_state *xs;};
/* * Here are the locking policies for the two bonding locks: * Get rcu_read_lock when reading or RTNL when writing slave list. */struct bonding { struct net_device *dev; /* first - useful for panic debug */ struct slave __rcu *curr_active_slave; struct slave __rcu *current_arp_slave; struct slave __rcu *primary_slave; struct bond_up_slave __rcu *usable_slaves; struct bond_up_slave __rcu *all_slaves; bool force_primary; bool notifier_ctx; s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ int (*recv_probe)(const struct sk_buff *, struct bonding *, struct slave *); /* mode_lock is used for mode-specific locking needs, currently used by: * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and * bond_3ad_state_machine_handler() concurrently and also * the access to the state machine shared variables. * TLB mode (5) - to sync the use and modifications of its hash table * ALB mode (6) - to sync the use and modifications of its hash table */ spinlock_t mode_lock; spinlock_t stats_lock; u32 send_peer_notif; u8 igmp_retrans;#ifdef CONFIG_PROC_FS struct proc_dir_entry *proc_entry; char proc_file_name[IFNAMSIZ];#endif /* CONFIG_PROC_FS */ struct list_head bond_list; u32 __percpu *rr_tx_counter; struct ad_bond_info ad_info; struct alb_bond_info alb_info; struct bond_params params; struct workqueue_struct *wq; struct delayed_work mii_work; struct delayed_work arp_work; struct delayed_work alb_work; struct delayed_work ad_work; struct delayed_work mcast_work; struct delayed_work slave_arr_work; struct delayed_work peer_notify_work;#ifdef CONFIG_DEBUG_FS /* debugging support via debugfs */ struct dentry *debug_dir;#endif /* CONFIG_DEBUG_FS */ struct rtnl_link_stats64 bond_stats;#ifdef CONFIG_XFRM_OFFLOAD struct list_head ipsec_list; /* protecting ipsec_list */ struct mutex ipsec_lock;#endif /* CONFIG_XFRM_OFFLOAD */ struct bpf_prog *xdp_prog;};
#define bond_slave_get_rcu(dev) \ ((struct slave *) rcu_dereference(dev->rx_handler_data))
#define bond_slave_get_rtnl(dev) \ ((struct slave *) rtnl_dereference(dev->rx_handler_data))
void bond_queue_slave_event(struct slave *slave);void bond_lower_state_changed(struct slave *slave);
struct bond_vlan_tag { __be16 vlan_proto; unsigned short vlan_id;};
/* * 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){ return netdev_lower_dev_get_private(bond->dev, slave_dev);}
static inline struct bonding *bond_get_bond_by_slave(struct slave *slave){ return slave->bond;}
static inline bool bond_should_override_tx_queue(struct bonding *bond){ return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || BOND_MODE(bond) == BOND_MODE_ROUNDROBIN;}
static inline bool bond_is_lb(const struct bonding *bond){ return BOND_MODE(bond) == BOND_MODE_TLB || BOND_MODE(bond) == BOND_MODE_ALB;}
static inline bool bond_needs_speed_duplex(const struct bonding *bond){ return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond);}
static inline bool bond_is_nondyn_tlb(const struct bonding *bond){ return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0);}
static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond){ return (BOND_MODE(bond) == BOND_MODE_8023AD || BOND_MODE(bond) == BOND_MODE_XOR || BOND_MODE(bond) == BOND_MODE_TLB || BOND_MODE(bond) == BOND_MODE_ALB);}
static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond){ return (BOND_MODE(bond) == BOND_MODE_8023AD || BOND_MODE(bond) == BOND_MODE_XOR || bond_is_nondyn_tlb(bond));}
static inline bool bond_mode_uses_arp(int mode){ return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && mode != BOND_MODE_ALB;}
static inline bool bond_mode_uses_primary(int mode){ return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || mode == BOND_MODE_ALB;}
static inline bool bond_uses_primary(const struct bonding *bond){ return bond_mode_uses_primary(BOND_MODE(bond));}
static inline struct net_device *bond_option_active_slave_get_rcu(const struct bonding *bond){ const struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave);
return bond_uses_primary(bond) && slave ? slave->dev : NULL;}
static inline bool bond_slave_is_up(struct slave *slave){ return netif_running(slave->dev) && netif_carrier_ok(slave->dev);}
static inline void bond_set_active_slave(struct slave *slave){ if (slave->backup) { slave->backup = 0; bond_queue_slave_event(slave); bond_lower_state_changed(slave); }}
static inline void bond_set_backup_slave(struct slave *slave){ if (!slave->backup) { slave->backup = 1; bond_queue_slave_event(slave); bond_lower_state_changed(slave); }}
static inline void bond_set_slave_state(struct slave *slave, int slave_state, bool notify){ if (slave->backup == slave_state) return;
slave->backup = slave_state; if (notify) { bond_lower_state_changed(slave); bond_queue_slave_event(slave); slave->should_notify = 0; } else { if (slave->should_notify) slave->should_notify = 0; else slave->should_notify = 1; }}
static inline void bond_slave_state_change(struct bonding *bond){ struct list_head *iter; struct slave *tmp;
bond_for_each_slave(bond, tmp, iter) { if (tmp->link == BOND_LINK_UP) bond_set_active_slave(tmp); else if (tmp->link == BOND_LINK_DOWN) bond_set_backup_slave(tmp); }}
static inline void bond_slave_state_notify(struct bonding *bond){ struct list_head *iter; struct slave *tmp;
bond_for_each_slave(bond, tmp, iter) { if (tmp->should_notify) { bond_lower_state_changed(tmp); tmp->should_notify = 0; } }}
static inline int bond_slave_state(struct slave *slave){ return slave->backup;}
static inline bool bond_is_active_slave(struct slave *slave){ return !bond_slave_state(slave);}
static inline bool bond_slave_can_tx(struct slave *slave){ return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && bond_is_active_slave(slave);}
static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev){ struct slave *slave; bool active;
rcu_read_lock(); slave = bond_slave_get_rcu(slave_dev); active = bond_is_active_slave(slave); rcu_read_unlock();
return active;}
static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len){ if (len == ETH_ALEN) { ether_addr_copy(dst, src); return; }
memcpy(dst, src, len);}
#define BOND_PRI_RESELECT_ALWAYS 0#define BOND_PRI_RESELECT_BETTER 1#define BOND_PRI_RESELECT_FAILURE 2
#define BOND_FOM_NONE 0#define BOND_FOM_ACTIVE 1#define BOND_FOM_FOLLOW 2
#define BOND_ARP_TARGETS_ANY 0#define BOND_ARP_TARGETS_ALL 1
#define BOND_ARP_VALIDATE_NONE 0#define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE)#define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP)#define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ BOND_ARP_VALIDATE_BACKUP)#define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1)#define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ BOND_ARP_FILTER)#define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ BOND_ARP_FILTER)
#define BOND_SLAVE_NOTIFY_NOW true#define BOND_SLAVE_NOTIFY_LATER false
static inline int slave_do_arp_validate(struct bonding *bond, struct slave *slave){ return bond->params.arp_validate & (1 << bond_slave_state(slave));}
static inline int slave_do_arp_validate_only(struct bonding *bond){ return bond->params.arp_validate & BOND_ARP_FILTER;}
static inline int bond_is_ip_target_ok(__be32 addr){ return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr);}
#if IS_ENABLED(CONFIG_IPV6)static inline int bond_is_ip6_target_ok(struct in6_addr *addr){ return !ipv6_addr_any(addr) && !ipv6_addr_loopback(addr) && !ipv6_addr_is_multicast(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){ unsigned long tmp, ret = READ_ONCE(slave->target_last_arp_rx[0]); int i = 1;
for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) { tmp = READ_ONCE(slave->target_last_arp_rx[i]); if (time_before(tmp, ret)) ret = tmp; } return ret;}
static inline unsigned long slave_last_rx(struct bonding *bond, struct slave *slave){ if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) return slave_oldest_target_arp_rx(bond, slave);
return READ_ONCE(slave->last_rx);}
static inline void slave_update_last_tx(struct slave *slave){ WRITE_ONCE(slave->last_tx, jiffies);}
static inline unsigned long slave_last_tx(struct slave *slave){ return READ_ONCE(slave->last_tx);}
#ifdef CONFIG_NET_POLL_CONTROLLERstatic inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, struct sk_buff *skb){ return netpoll_send_skb(slave->np, skb);}#elsestatic 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){ if (!bond_is_lb(slave->bond)) bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); if (!slave->bond->params.all_slaves_active) slave->inactive = 1; if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) slave->rx_disabled = 1;}
static inline void bond_set_slave_tx_disabled_flags(struct slave *slave, bool notify){ bond_set_slave_state(slave, BOND_STATE_BACKUP, notify);}
static inline void bond_set_slave_active_flags(struct slave *slave, bool notify){ bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); slave->inactive = 0; if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) slave->rx_disabled = 0;}
static inline void bond_set_slave_rx_enabled_flags(struct slave *slave, bool notify){ slave->rx_disabled = 0;}
static inline bool bond_is_slave_inactive(struct slave *slave){ return slave->inactive;}
static inline bool bond_is_slave_rx_disabled(struct slave *slave){ return slave->rx_disabled;}
static inline void bond_propose_link_state(struct slave *slave, int state){ slave->link_new_state = state;}
static inline void bond_commit_link_state(struct slave *slave, bool notify){ if (slave->link_new_state == BOND_LINK_NOCHANGE) return;
slave->link = slave->link_new_state; if (notify) { bond_queue_slave_event(slave); bond_lower_state_changed(slave); slave->should_notify_link = 0; } else { if (slave->should_notify_link) slave->should_notify_link = 0; else slave->should_notify_link = 1; }}
static inline void bond_set_slave_link_state(struct slave *slave, int state, bool notify){ bond_propose_link_state(slave, state); bond_commit_link_state(slave, notify);}
static inline void bond_slave_link_notify(struct bonding *bond){ struct list_head *iter; struct slave *tmp;
bond_for_each_slave(bond, tmp, iter) { if (tmp->should_notify_link) { bond_queue_slave_event(tmp); bond_lower_state_changed(tmp); tmp->should_notify_link = 0; } }}
static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local){ struct in_device *in_dev; __be32 addr = 0;
rcu_read_lock(); in_dev = __in_dev_get_rcu(dev);
if (in_dev) addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, RT_SCOPE_HOST); rcu_read_unlock(); return addr;}
struct bond_net { struct net *net; /* Associated network namespace */ struct list_head dev_list;#ifdef CONFIG_PROC_FS struct proc_dir_entry *proc_dir;#endif struct class_attribute class_attr_bonding_masters;};
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);bool __bond_xdp_check(int mode, int xmit_policy);bool bond_xdp_check(struct bonding *bond, 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(const 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_peer_notify_work_rearm(struct bonding *bond, unsigned long delay);void bond_work_init_all(struct bonding *bond);void bond_work_cancel_all(struct bonding *bond);
#ifdef CONFIG_PROC_FSvoid 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);#elsestatic 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){ struct list_head *iter; struct slave *tmp;
bond_for_each_slave(bond, tmp, iter) if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) return tmp;
return NULL;}
/* Caller must hold rcu_read_lock() for read */static inline bool bond_slave_has_mac_rcu(struct bonding *bond, const u8 *mac){ struct list_head *iter; struct slave *tmp;
bond_for_each_slave_rcu(bond, tmp, iter) if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) return true; return false;}
/* 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){ int i;
for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) if (targets[i] == ip) return i; else if (targets[i] == 0) break;
return -1;}
#if IS_ENABLED(CONFIG_IPV6)static inline int bond_get_targets_ip6(struct in6_addr *targets, struct in6_addr *ip){ struct in6_addr mcaddr; int i;
for (i = 0; i < BOND_MAX_NS_TARGETS; i++) { addrconf_addr_solict_mult(&targets[i], &mcaddr); if ((ipv6_addr_equal(&targets[i], ip)) || (ipv6_addr_equal(&mcaddr, ip))) return i; else if (ipv6_addr_any(&targets[i])) break; }
return -1;}#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){ dev_core_stats_tx_dropped_inc(dev); dev_kfree_skb_any(skb); return NET_XMIT_DROP;}
#endif /* _NET_BONDING_H */