11ef8019bSDavid S. Miller /* 21ef8019bSDavid S. Miller * Bond several ethernet interfaces into a Cisco, running 'Etherchannel'. 31ef8019bSDavid S. Miller * 41ef8019bSDavid S. Miller * Portions are (c) Copyright 1995 Simon "Guru Aleph-Null" Janes 51ef8019bSDavid S. Miller * NCM: Network and Communications Management, Inc. 61ef8019bSDavid S. Miller * 71ef8019bSDavid S. Miller * BUT, I'm the one who modified it for ethernet, so: 81ef8019bSDavid S. Miller * (c) Copyright 1999, Thomas Davis, tadavis@lbl.gov 91ef8019bSDavid S. Miller * 101ef8019bSDavid S. Miller * This software may be used and distributed according to the terms 111ef8019bSDavid S. Miller * of the GNU Public License, incorporated herein by reference. 121ef8019bSDavid S. Miller * 131ef8019bSDavid S. Miller */ 141ef8019bSDavid S. Miller 151ef8019bSDavid S. Miller #ifndef _NET_BONDING_H 161ef8019bSDavid S. Miller #define _NET_BONDING_H 171ef8019bSDavid S. Miller 181ef8019bSDavid S. Miller #include <linux/timer.h> 191ef8019bSDavid S. Miller #include <linux/proc_fs.h> 201ef8019bSDavid S. Miller #include <linux/if_bonding.h> 211ef8019bSDavid S. Miller #include <linux/cpumask.h> 221ef8019bSDavid S. Miller #include <linux/in6.h> 231ef8019bSDavid S. Miller #include <linux/netpoll.h> 241ef8019bSDavid S. Miller #include <linux/inetdevice.h> 251ef8019bSDavid S. Miller #include <linux/etherdevice.h> 261ef8019bSDavid S. Miller #include <linux/reciprocal_div.h> 271ef8019bSDavid S. Miller #include <linux/if_link.h> 281ef8019bSDavid S. Miller 291ef8019bSDavid S. Miller #include <net/bond_3ad.h> 301ef8019bSDavid S. Miller #include <net/bond_alb.h> 311ef8019bSDavid S. Miller #include <net/bond_options.h> 324e24be01SHangbin Liu #include <net/ipv6.h> 334e24be01SHangbin Liu #include <net/addrconf.h> 341ef8019bSDavid S. Miller 351ef8019bSDavid S. Miller #define BOND_MAX_ARP_TARGETS 16 364e24be01SHangbin Liu #define BOND_MAX_NS_TARGETS BOND_MAX_ARP_TARGETS 371ef8019bSDavid S. Miller 381ef8019bSDavid S. Miller #define BOND_DEFAULT_MIIMON 100 391ef8019bSDavid S. Miller 40f87fda00SEric Dumazet #ifndef __long_aligned 41f87fda00SEric Dumazet #define __long_aligned __attribute__((aligned((sizeof(long))))) 42f87fda00SEric Dumazet #endif 431ef8019bSDavid S. Miller 445237ff79SJarod Wilson #define slave_info(bond_dev, slave_dev, fmt, ...) \ 455237ff79SJarod Wilson netdev_info(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 465237ff79SJarod Wilson #define slave_warn(bond_dev, slave_dev, fmt, ...) \ 475237ff79SJarod Wilson netdev_warn(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 485237ff79SJarod Wilson #define slave_dbg(bond_dev, slave_dev, fmt, ...) \ 495237ff79SJarod Wilson netdev_dbg(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 505237ff79SJarod Wilson #define slave_err(bond_dev, slave_dev, fmt, ...) \ 515237ff79SJarod Wilson netdev_err(bond_dev, "(slave %s): " fmt, (slave_dev)->name, ##__VA_ARGS__) 525237ff79SJarod Wilson 531ef8019bSDavid S. Miller #define BOND_MODE(bond) ((bond)->params.mode) 541ef8019bSDavid S. Miller 551ef8019bSDavid S. Miller /* slave list primitives */ 561ef8019bSDavid S. Miller #define bond_slave_list(bond) (&(bond)->dev->adj_list.lower) 571ef8019bSDavid S. Miller 581ef8019bSDavid S. Miller #define bond_has_slaves(bond) !list_empty(bond_slave_list(bond)) 591ef8019bSDavid S. Miller 601ef8019bSDavid S. Miller /* IMPORTANT: bond_first/last_slave can return NULL in case of an empty list */ 611ef8019bSDavid S. Miller #define bond_first_slave(bond) \ 621ef8019bSDavid S. Miller (bond_has_slaves(bond) ? \ 631ef8019bSDavid S. Miller netdev_adjacent_get_private(bond_slave_list(bond)->next) : \ 641ef8019bSDavid S. Miller NULL) 651ef8019bSDavid S. Miller #define bond_last_slave(bond) \ 661ef8019bSDavid S. Miller (bond_has_slaves(bond) ? \ 671ef8019bSDavid S. Miller netdev_adjacent_get_private(bond_slave_list(bond)->prev) : \ 681ef8019bSDavid S. Miller NULL) 691ef8019bSDavid S. Miller 701ef8019bSDavid S. Miller /* Caller must have rcu_read_lock */ 711ef8019bSDavid S. Miller #define bond_first_slave_rcu(bond) \ 721ef8019bSDavid S. Miller netdev_lower_get_first_private_rcu(bond->dev) 731ef8019bSDavid S. Miller 741ef8019bSDavid S. Miller #define bond_is_first_slave(bond, pos) (pos == bond_first_slave(bond)) 751ef8019bSDavid S. Miller #define bond_is_last_slave(bond, pos) (pos == bond_last_slave(bond)) 761ef8019bSDavid S. Miller 771ef8019bSDavid S. Miller /** 781ef8019bSDavid S. Miller * bond_for_each_slave - iterate over all slaves 791ef8019bSDavid S. Miller * @bond: the bond holding this list 801ef8019bSDavid S. Miller * @pos: current slave 811ef8019bSDavid S. Miller * @iter: list_head * iterator 821ef8019bSDavid S. Miller * 831ef8019bSDavid S. Miller * Caller must hold RTNL 841ef8019bSDavid S. Miller */ 851ef8019bSDavid S. Miller #define bond_for_each_slave(bond, pos, iter) \ 861ef8019bSDavid S. Miller netdev_for_each_lower_private((bond)->dev, pos, iter) 871ef8019bSDavid S. Miller 881ef8019bSDavid S. Miller /* Caller must have rcu_read_lock */ 891ef8019bSDavid S. Miller #define bond_for_each_slave_rcu(bond, pos, iter) \ 901ef8019bSDavid S. Miller netdev_for_each_lower_private_rcu((bond)->dev, pos, iter) 911ef8019bSDavid S. Miller 92a3b658cfSJarod Wilson #define BOND_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ 93a3b658cfSJarod Wilson NETIF_F_GSO_ESP) 94a3b658cfSJarod Wilson 951ef8019bSDavid S. Miller #ifdef CONFIG_NET_POLL_CONTROLLER 961ef8019bSDavid S. Miller extern atomic_t netpoll_block_tx; 971ef8019bSDavid S. Miller 981ef8019bSDavid S. Miller static inline void block_netpoll_tx(void) 991ef8019bSDavid S. Miller { 1001ef8019bSDavid S. Miller atomic_inc(&netpoll_block_tx); 1011ef8019bSDavid S. Miller } 1021ef8019bSDavid S. Miller 1031ef8019bSDavid S. Miller static inline void unblock_netpoll_tx(void) 1041ef8019bSDavid S. Miller { 1051ef8019bSDavid S. Miller atomic_dec(&netpoll_block_tx); 1061ef8019bSDavid S. Miller } 1071ef8019bSDavid S. Miller 1081ef8019bSDavid S. Miller static inline int is_netpoll_tx_blocked(struct net_device *dev) 1091ef8019bSDavid S. Miller { 1101ef8019bSDavid S. Miller if (unlikely(netpoll_tx_running(dev))) 1111ef8019bSDavid S. Miller return atomic_read(&netpoll_block_tx); 1121ef8019bSDavid S. Miller return 0; 1131ef8019bSDavid S. Miller } 1141ef8019bSDavid S. Miller #else 1151ef8019bSDavid S. Miller #define block_netpoll_tx() 1161ef8019bSDavid S. Miller #define unblock_netpoll_tx() 1171ef8019bSDavid S. Miller #define is_netpoll_tx_blocked(dev) (0) 1181ef8019bSDavid S. Miller #endif 1191ef8019bSDavid S. Miller 1201ef8019bSDavid S. Miller struct bond_params { 1211ef8019bSDavid S. Miller int mode; 1221ef8019bSDavid S. Miller int xmit_policy; 1231ef8019bSDavid S. Miller int miimon; 1241ef8019bSDavid S. Miller u8 num_peer_notif; 1255944b5abSHangbin Liu u8 missed_max; 1261ef8019bSDavid S. Miller int arp_interval; 1271ef8019bSDavid S. Miller int arp_validate; 1281ef8019bSDavid S. Miller int arp_all_targets; 1291ef8019bSDavid S. Miller int use_carrier; 1301ef8019bSDavid S. Miller int fail_over_mac; 1311ef8019bSDavid S. Miller int updelay; 1321ef8019bSDavid S. Miller int downdelay; 13307a4ddecSVincent Bernat int peer_notif_delay; 1343a755cd8SHangbin Liu int lacp_active; 1351ef8019bSDavid S. Miller int lacp_fast; 1361ef8019bSDavid S. Miller unsigned int min_links; 1371ef8019bSDavid S. Miller int ad_select; 1381ef8019bSDavid S. Miller char primary[IFNAMSIZ]; 1391ef8019bSDavid S. Miller int primary_reselect; 1401ef8019bSDavid S. Miller __be32 arp_targets[BOND_MAX_ARP_TARGETS]; 1411ef8019bSDavid S. Miller int tx_queues; 1421ef8019bSDavid S. Miller int all_slaves_active; 1431ef8019bSDavid S. Miller int resend_igmp; 1441ef8019bSDavid S. Miller int lp_interval; 1451ef8019bSDavid S. Miller int packets_per_slave; 1461ef8019bSDavid S. Miller int tlb_dynamic_lb; 1471ef8019bSDavid S. Miller struct reciprocal_value reciprocal_packets_per_slave; 1486791e466SMahesh Bandewar u16 ad_actor_sys_prio; 149d22a5fc0SMahesh Bandewar u16 ad_user_port_key; 150c4caa500SHangbin Liu #if IS_ENABLED(CONFIG_IPV6) 1514e24be01SHangbin Liu struct in6_addr ns_targets[BOND_MAX_NS_TARGETS]; 152c4caa500SHangbin Liu #endif 153f87fda00SEric Dumazet 154f87fda00SEric Dumazet /* 2 bytes of padding : see ether_addr_equal_64bits() */ 155f87fda00SEric Dumazet u8 ad_actor_system[ETH_ALEN + 2]; 1561ef8019bSDavid S. Miller }; 1571ef8019bSDavid S. Miller 1581ef8019bSDavid S. Miller struct slave { 1591ef8019bSDavid S. Miller struct net_device *dev; /* first - useful for panic debug */ 1601ef8019bSDavid S. Miller struct bonding *bond; /* our master */ 1611ef8019bSDavid S. Miller int delay; 16206799a90SVladimir Oltean /* all 4 in jiffies */ 1631ef8019bSDavid S. Miller unsigned long last_link_up; 16406799a90SVladimir Oltean unsigned long last_tx; 1651ef8019bSDavid S. Miller unsigned long last_rx; 1661ef8019bSDavid S. Miller unsigned long target_last_arp_rx[BOND_MAX_ARP_TARGETS]; 1671ef8019bSDavid S. Miller s8 link; /* one of BOND_LINK_XXXX */ 168f307668bSMahesh Bandewar s8 link_new_state; /* one of BOND_LINK_XXXX */ 1691ef8019bSDavid S. Miller u8 backup:1, /* indicates backup slave. Value corresponds with 1701ef8019bSDavid S. Miller BOND_STATE_ACTIVE and BOND_STATE_BACKUP */ 1711ef8019bSDavid S. Miller inactive:1, /* indicates inactive slave */ 1725d397061SJiri Pirko should_notify:1, /* indicates whether the state changed */ 1735d397061SJiri Pirko should_notify_link:1; /* indicates whether the link changed */ 1741ef8019bSDavid S. Miller u8 duplex; 1751ef8019bSDavid S. Miller u32 original_mtu; 1761ef8019bSDavid S. Miller u32 link_failure_count; 1771ef8019bSDavid S. Miller u32 speed; 1781ef8019bSDavid S. Miller u16 queue_id; 179faeeb317SJarod Wilson u8 perm_hwaddr[MAX_ADDR_LEN]; 1800a2ff7ccSHangbin Liu int prio; 1811ef8019bSDavid S. Miller struct ad_slave_info *ad_info; 1821ef8019bSDavid S. Miller struct tlb_slave_info tlb_info; 1831ef8019bSDavid S. Miller #ifdef CONFIG_NET_POLL_CONTROLLER 1841ef8019bSDavid S. Miller struct netpoll *np; 1851ef8019bSDavid S. Miller #endif 186d4859d74SMahesh Bandewar struct delayed_work notify_work; 1871ef8019bSDavid S. Miller struct kobject kobj; 1881ef8019bSDavid S. Miller struct rtnl_link_stats64 slave_stats; 1891ef8019bSDavid S. Miller }; 1901ef8019bSDavid S. Miller 191b9ad3e9fSJamie Iles static inline struct slave *to_slave(struct kobject *kobj) 192b9ad3e9fSJamie Iles { 193b9ad3e9fSJamie Iles return container_of(kobj, struct slave, kobj); 194b9ad3e9fSJamie Iles } 195b9ad3e9fSJamie Iles 1961ef8019bSDavid S. Miller struct bond_up_slave { 1971ef8019bSDavid S. Miller unsigned int count; 1981ef8019bSDavid S. Miller struct rcu_head rcu; 199749db093SGustavo A. R. Silva struct slave *arr[]; 2001ef8019bSDavid S. Miller }; 2011ef8019bSDavid S. Miller 2021ef8019bSDavid S. Miller /* 2031ef8019bSDavid S. Miller * Link pseudo-state only used internally by monitors 2041ef8019bSDavid S. Miller */ 2051ef8019bSDavid S. Miller #define BOND_LINK_NOCHANGE -1 2061ef8019bSDavid S. Miller 2079a560550STaehee Yoo struct bond_ipsec { 2089a560550STaehee Yoo struct list_head list; 2099a560550STaehee Yoo struct xfrm_state *xs; 2109a560550STaehee Yoo }; 2119a560550STaehee Yoo 2121ef8019bSDavid S. Miller /* 2131ef8019bSDavid S. Miller * Here are the locking policies for the two bonding locks: 2141ef8019bSDavid S. Miller * Get rcu_read_lock when reading or RTNL when writing slave list. 2151ef8019bSDavid S. Miller */ 2161ef8019bSDavid S. Miller struct bonding { 2171ef8019bSDavid S. Miller struct net_device *dev; /* first - useful for panic debug */ 2181ef8019bSDavid S. Miller struct slave __rcu *curr_active_slave; 2191ef8019bSDavid S. Miller struct slave __rcu *current_arp_slave; 2201ef8019bSDavid S. Miller struct slave __rcu *primary_slave; 2216b447e76SMaor Gottlieb struct bond_up_slave __rcu *usable_slaves; 2226b447e76SMaor Gottlieb struct bond_up_slave __rcu *all_slaves; 2231ef8019bSDavid S. Miller bool force_primary; 2241ef8019bSDavid S. Miller s32 slave_cnt; /* never change this value outside the attach/detach wrappers */ 2251ef8019bSDavid S. Miller int (*recv_probe)(const struct sk_buff *, struct bonding *, 2261ef8019bSDavid S. Miller struct slave *); 2271ef8019bSDavid S. Miller /* mode_lock is used for mode-specific locking needs, currently used by: 2281ef8019bSDavid S. Miller * 3ad mode (4) - protect against running bond_3ad_unbind_slave() and 2291ef8019bSDavid S. Miller * bond_3ad_state_machine_handler() concurrently and also 2301ef8019bSDavid S. Miller * the access to the state machine shared variables. 2311ef8019bSDavid S. Miller * TLB mode (5) - to sync the use and modifications of its hash table 2321ef8019bSDavid S. Miller * ALB mode (6) - to sync the use and modifications of its hash table 2331ef8019bSDavid S. Miller */ 2341ef8019bSDavid S. Miller spinlock_t mode_lock; 235fe30937bSEric Dumazet spinlock_t stats_lock; 2361ef8019bSDavid S. Miller u8 send_peer_notif; 2371ef8019bSDavid S. Miller u8 igmp_retrans; 2381ef8019bSDavid S. Miller #ifdef CONFIG_PROC_FS 2391ef8019bSDavid S. Miller struct proc_dir_entry *proc_entry; 2401ef8019bSDavid S. Miller char proc_file_name[IFNAMSIZ]; 2411ef8019bSDavid S. Miller #endif /* CONFIG_PROC_FS */ 2421ef8019bSDavid S. Miller struct list_head bond_list; 243848ca918SJussi Maki u32 __percpu *rr_tx_counter; 2441ef8019bSDavid S. Miller struct ad_bond_info ad_info; 2451ef8019bSDavid S. Miller struct alb_bond_info alb_info; 2461ef8019bSDavid S. Miller struct bond_params params; 2471ef8019bSDavid S. Miller struct workqueue_struct *wq; 2481ef8019bSDavid S. Miller struct delayed_work mii_work; 2491ef8019bSDavid S. Miller struct delayed_work arp_work; 2501ef8019bSDavid S. Miller struct delayed_work alb_work; 2511ef8019bSDavid S. Miller struct delayed_work ad_work; 2521ef8019bSDavid S. Miller struct delayed_work mcast_work; 2531ef8019bSDavid S. Miller struct delayed_work slave_arr_work; 2541ef8019bSDavid S. Miller #ifdef CONFIG_DEBUG_FS 2551ef8019bSDavid S. Miller /* debugging support via debugfs */ 2561ef8019bSDavid S. Miller struct dentry *debug_dir; 2571ef8019bSDavid S. Miller #endif /* CONFIG_DEBUG_FS */ 2581ef8019bSDavid S. Miller struct rtnl_link_stats64 bond_stats; 25918cb261aSJarod Wilson #ifdef CONFIG_XFRM_OFFLOAD 2609a560550STaehee Yoo struct list_head ipsec_list; 2619a560550STaehee Yoo /* protecting ipsec_list */ 2629a560550STaehee Yoo spinlock_t ipsec_lock; 26318cb261aSJarod Wilson #endif /* CONFIG_XFRM_OFFLOAD */ 2649e2ee5c7SJussi Maki struct bpf_prog *xdp_prog; 2651ef8019bSDavid S. Miller }; 2661ef8019bSDavid S. Miller 2671ef8019bSDavid S. Miller #define bond_slave_get_rcu(dev) \ 2681ef8019bSDavid S. Miller ((struct slave *) rcu_dereference(dev->rx_handler_data)) 2691ef8019bSDavid S. Miller 2701ef8019bSDavid S. Miller #define bond_slave_get_rtnl(dev) \ 2711ef8019bSDavid S. Miller ((struct slave *) rtnl_dereference(dev->rx_handler_data)) 2721ef8019bSDavid S. Miller 27369e61133SMoni Shoua void bond_queue_slave_event(struct slave *slave); 274f7c7eb7fSJiri Pirko void bond_lower_state_changed(struct slave *slave); 27569e61133SMoni Shoua 2761ef8019bSDavid S. Miller struct bond_vlan_tag { 2771ef8019bSDavid S. Miller __be16 vlan_proto; 2781ef8019bSDavid S. Miller unsigned short vlan_id; 2791ef8019bSDavid S. Miller }; 2801ef8019bSDavid S. Miller 2811ef8019bSDavid S. Miller /** 2821ef8019bSDavid S. Miller * Returns NULL if the net_device does not belong to any of the bond's slaves 2831ef8019bSDavid S. Miller * 2841ef8019bSDavid S. Miller * Caller must hold bond lock for read 2851ef8019bSDavid S. Miller */ 2861ef8019bSDavid S. Miller static inline struct slave *bond_get_slave_by_dev(struct bonding *bond, 2871ef8019bSDavid S. Miller struct net_device *slave_dev) 2881ef8019bSDavid S. Miller { 2891ef8019bSDavid S. Miller return netdev_lower_dev_get_private(bond->dev, slave_dev); 2901ef8019bSDavid S. Miller } 2911ef8019bSDavid S. Miller 2921ef8019bSDavid S. Miller static inline struct bonding *bond_get_bond_by_slave(struct slave *slave) 2931ef8019bSDavid S. Miller { 2941ef8019bSDavid S. Miller return slave->bond; 2951ef8019bSDavid S. Miller } 2961ef8019bSDavid S. Miller 2971ef8019bSDavid S. Miller static inline bool bond_should_override_tx_queue(struct bonding *bond) 2981ef8019bSDavid S. Miller { 2991ef8019bSDavid S. Miller return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP || 3001ef8019bSDavid S. Miller BOND_MODE(bond) == BOND_MODE_ROUNDROBIN; 3011ef8019bSDavid S. Miller } 3021ef8019bSDavid S. Miller 3031ef8019bSDavid S. Miller static inline bool bond_is_lb(const struct bonding *bond) 3041ef8019bSDavid S. Miller { 3051ef8019bSDavid S. Miller return BOND_MODE(bond) == BOND_MODE_TLB || 3061ef8019bSDavid S. Miller BOND_MODE(bond) == BOND_MODE_ALB; 3071ef8019bSDavid S. Miller } 3081ef8019bSDavid S. Miller 309ad729bc9SAndreas Born static inline bool bond_needs_speed_duplex(const struct bonding *bond) 310ad729bc9SAndreas Born { 311ad729bc9SAndreas Born return BOND_MODE(bond) == BOND_MODE_8023AD || bond_is_lb(bond); 312ad729bc9SAndreas Born } 313ad729bc9SAndreas Born 3141ef8019bSDavid S. Miller static inline bool bond_is_nondyn_tlb(const struct bonding *bond) 3151ef8019bSDavid S. Miller { 316e79c1055SDebabrata Banerjee return (bond_is_lb(bond) && bond->params.tlb_dynamic_lb == 0); 317e79c1055SDebabrata Banerjee } 318e79c1055SDebabrata Banerjee 319e79c1055SDebabrata Banerjee static inline bool bond_mode_can_use_xmit_hash(const struct bonding *bond) 320e79c1055SDebabrata Banerjee { 321e79c1055SDebabrata Banerjee return (BOND_MODE(bond) == BOND_MODE_8023AD || 322e79c1055SDebabrata Banerjee BOND_MODE(bond) == BOND_MODE_XOR || 323e79c1055SDebabrata Banerjee BOND_MODE(bond) == BOND_MODE_TLB || 324e79c1055SDebabrata Banerjee BOND_MODE(bond) == BOND_MODE_ALB); 3251ef8019bSDavid S. Miller } 3261ef8019bSDavid S. Miller 3271ef8019bSDavid S. Miller static inline bool bond_mode_uses_xmit_hash(const struct bonding *bond) 3281ef8019bSDavid S. Miller { 3291ef8019bSDavid S. Miller return (BOND_MODE(bond) == BOND_MODE_8023AD || 3301ef8019bSDavid S. Miller BOND_MODE(bond) == BOND_MODE_XOR || 3311ef8019bSDavid S. Miller bond_is_nondyn_tlb(bond)); 3321ef8019bSDavid S. Miller } 3331ef8019bSDavid S. Miller 3341ef8019bSDavid S. Miller static inline bool bond_mode_uses_arp(int mode) 3351ef8019bSDavid S. Miller { 3361ef8019bSDavid S. Miller return mode != BOND_MODE_8023AD && mode != BOND_MODE_TLB && 3371ef8019bSDavid S. Miller mode != BOND_MODE_ALB; 3381ef8019bSDavid S. Miller } 3391ef8019bSDavid S. Miller 3401ef8019bSDavid S. Miller static inline bool bond_mode_uses_primary(int mode) 3411ef8019bSDavid S. Miller { 3421ef8019bSDavid S. Miller return mode == BOND_MODE_ACTIVEBACKUP || mode == BOND_MODE_TLB || 3431ef8019bSDavid S. Miller mode == BOND_MODE_ALB; 3441ef8019bSDavid S. Miller } 3451ef8019bSDavid S. Miller 3461ef8019bSDavid S. Miller static inline bool bond_uses_primary(struct bonding *bond) 3471ef8019bSDavid S. Miller { 3481ef8019bSDavid S. Miller return bond_mode_uses_primary(BOND_MODE(bond)); 3491ef8019bSDavid S. Miller } 3501ef8019bSDavid S. Miller 351e9998695SMatan Barak static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) 352e9998695SMatan Barak { 353aa603467SHangbin Liu struct slave *slave = rcu_dereference_rtnl(bond->curr_active_slave); 354e9998695SMatan Barak 355e9998695SMatan Barak return bond_uses_primary(bond) && slave ? slave->dev : NULL; 356e9998695SMatan Barak } 357e9998695SMatan Barak 3581ef8019bSDavid S. Miller static inline bool bond_slave_is_up(struct slave *slave) 3591ef8019bSDavid S. Miller { 3601ef8019bSDavid S. Miller return netif_running(slave->dev) && netif_carrier_ok(slave->dev); 3611ef8019bSDavid S. Miller } 3621ef8019bSDavid S. Miller 3631ef8019bSDavid S. Miller static inline void bond_set_active_slave(struct slave *slave) 3641ef8019bSDavid S. Miller { 3651ef8019bSDavid S. Miller if (slave->backup) { 3661ef8019bSDavid S. Miller slave->backup = 0; 36769e61133SMoni Shoua bond_queue_slave_event(slave); 368f7c7eb7fSJiri Pirko bond_lower_state_changed(slave); 3691ef8019bSDavid S. Miller } 3701ef8019bSDavid S. Miller } 3711ef8019bSDavid S. Miller 3721ef8019bSDavid S. Miller static inline void bond_set_backup_slave(struct slave *slave) 3731ef8019bSDavid S. Miller { 3741ef8019bSDavid S. Miller if (!slave->backup) { 3751ef8019bSDavid S. Miller slave->backup = 1; 37669e61133SMoni Shoua bond_queue_slave_event(slave); 377f7c7eb7fSJiri Pirko bond_lower_state_changed(slave); 3781ef8019bSDavid S. Miller } 3791ef8019bSDavid S. Miller } 3801ef8019bSDavid S. Miller 3811ef8019bSDavid S. Miller static inline void bond_set_slave_state(struct slave *slave, 3821ef8019bSDavid S. Miller int slave_state, bool notify) 3831ef8019bSDavid S. Miller { 3841ef8019bSDavid S. Miller if (slave->backup == slave_state) 3851ef8019bSDavid S. Miller return; 3861ef8019bSDavid S. Miller 3871ef8019bSDavid S. Miller slave->backup = slave_state; 3881ef8019bSDavid S. Miller if (notify) { 389f7c7eb7fSJiri Pirko bond_lower_state_changed(slave); 39069e61133SMoni Shoua bond_queue_slave_event(slave); 3911ef8019bSDavid S. Miller slave->should_notify = 0; 3921ef8019bSDavid S. Miller } else { 3931ef8019bSDavid S. Miller if (slave->should_notify) 3941ef8019bSDavid S. Miller slave->should_notify = 0; 3951ef8019bSDavid S. Miller else 3961ef8019bSDavid S. Miller slave->should_notify = 1; 3971ef8019bSDavid S. Miller } 3981ef8019bSDavid S. Miller } 3991ef8019bSDavid S. Miller 4001ef8019bSDavid S. Miller static inline void bond_slave_state_change(struct bonding *bond) 4011ef8019bSDavid S. Miller { 4021ef8019bSDavid S. Miller struct list_head *iter; 4031ef8019bSDavid S. Miller struct slave *tmp; 4041ef8019bSDavid S. Miller 4051ef8019bSDavid S. Miller bond_for_each_slave(bond, tmp, iter) { 4061ef8019bSDavid S. Miller if (tmp->link == BOND_LINK_UP) 4071ef8019bSDavid S. Miller bond_set_active_slave(tmp); 4081ef8019bSDavid S. Miller else if (tmp->link == BOND_LINK_DOWN) 4091ef8019bSDavid S. Miller bond_set_backup_slave(tmp); 4101ef8019bSDavid S. Miller } 4111ef8019bSDavid S. Miller } 4121ef8019bSDavid S. Miller 4131ef8019bSDavid S. Miller static inline void bond_slave_state_notify(struct bonding *bond) 4141ef8019bSDavid S. Miller { 4151ef8019bSDavid S. Miller struct list_head *iter; 4161ef8019bSDavid S. Miller struct slave *tmp; 4171ef8019bSDavid S. Miller 4181ef8019bSDavid S. Miller bond_for_each_slave(bond, tmp, iter) { 4191ef8019bSDavid S. Miller if (tmp->should_notify) { 420f7c7eb7fSJiri Pirko bond_lower_state_changed(tmp); 4211ef8019bSDavid S. Miller tmp->should_notify = 0; 4221ef8019bSDavid S. Miller } 4231ef8019bSDavid S. Miller } 4241ef8019bSDavid S. Miller } 4251ef8019bSDavid S. Miller 4261ef8019bSDavid S. Miller static inline int bond_slave_state(struct slave *slave) 4271ef8019bSDavid S. Miller { 4281ef8019bSDavid S. Miller return slave->backup; 4291ef8019bSDavid S. Miller } 4301ef8019bSDavid S. Miller 4311ef8019bSDavid S. Miller static inline bool bond_is_active_slave(struct slave *slave) 4321ef8019bSDavid S. Miller { 4331ef8019bSDavid S. Miller return !bond_slave_state(slave); 4341ef8019bSDavid S. Miller } 4351ef8019bSDavid S. Miller 4361ef8019bSDavid S. Miller static inline bool bond_slave_can_tx(struct slave *slave) 4371ef8019bSDavid S. Miller { 4381ef8019bSDavid S. Miller return bond_slave_is_up(slave) && slave->link == BOND_LINK_UP && 4391ef8019bSDavid S. Miller bond_is_active_slave(slave); 4401ef8019bSDavid S. Miller } 4411ef8019bSDavid S. Miller 442eeed992bSPetr Machata static inline bool bond_is_active_slave_dev(const struct net_device *slave_dev) 443eeed992bSPetr Machata { 444eeed992bSPetr Machata struct slave *slave; 445eeed992bSPetr Machata bool active; 446eeed992bSPetr Machata 447eeed992bSPetr Machata rcu_read_lock(); 448eeed992bSPetr Machata slave = bond_slave_get_rcu(slave_dev); 449eeed992bSPetr Machata active = bond_is_active_slave(slave); 450eeed992bSPetr Machata rcu_read_unlock(); 451eeed992bSPetr Machata 452eeed992bSPetr Machata return active; 453eeed992bSPetr Machata } 454eeed992bSPetr Machata 455faeeb317SJarod Wilson static inline void bond_hw_addr_copy(u8 *dst, const u8 *src, unsigned int len) 456faeeb317SJarod Wilson { 457faeeb317SJarod Wilson if (len == ETH_ALEN) { 458faeeb317SJarod Wilson ether_addr_copy(dst, src); 459faeeb317SJarod Wilson return; 460faeeb317SJarod Wilson } 461faeeb317SJarod Wilson 462faeeb317SJarod Wilson memcpy(dst, src, len); 463faeeb317SJarod Wilson } 464faeeb317SJarod Wilson 4651ef8019bSDavid S. Miller #define BOND_PRI_RESELECT_ALWAYS 0 4661ef8019bSDavid S. Miller #define BOND_PRI_RESELECT_BETTER 1 4671ef8019bSDavid S. Miller #define BOND_PRI_RESELECT_FAILURE 2 4681ef8019bSDavid S. Miller 4691ef8019bSDavid S. Miller #define BOND_FOM_NONE 0 4701ef8019bSDavid S. Miller #define BOND_FOM_ACTIVE 1 4711ef8019bSDavid S. Miller #define BOND_FOM_FOLLOW 2 4721ef8019bSDavid S. Miller 4731ef8019bSDavid S. Miller #define BOND_ARP_TARGETS_ANY 0 4741ef8019bSDavid S. Miller #define BOND_ARP_TARGETS_ALL 1 4751ef8019bSDavid S. Miller 4761ef8019bSDavid S. Miller #define BOND_ARP_VALIDATE_NONE 0 4771ef8019bSDavid S. Miller #define BOND_ARP_VALIDATE_ACTIVE (1 << BOND_STATE_ACTIVE) 4781ef8019bSDavid S. Miller #define BOND_ARP_VALIDATE_BACKUP (1 << BOND_STATE_BACKUP) 4791ef8019bSDavid S. Miller #define BOND_ARP_VALIDATE_ALL (BOND_ARP_VALIDATE_ACTIVE | \ 4801ef8019bSDavid S. Miller BOND_ARP_VALIDATE_BACKUP) 4811ef8019bSDavid S. Miller #define BOND_ARP_FILTER (BOND_ARP_VALIDATE_ALL + 1) 4821ef8019bSDavid S. Miller #define BOND_ARP_FILTER_ACTIVE (BOND_ARP_VALIDATE_ACTIVE | \ 4831ef8019bSDavid S. Miller BOND_ARP_FILTER) 4841ef8019bSDavid S. Miller #define BOND_ARP_FILTER_BACKUP (BOND_ARP_VALIDATE_BACKUP | \ 4851ef8019bSDavid S. Miller BOND_ARP_FILTER) 4861ef8019bSDavid S. Miller 4871ef8019bSDavid S. Miller #define BOND_SLAVE_NOTIFY_NOW true 4881ef8019bSDavid S. Miller #define BOND_SLAVE_NOTIFY_LATER false 4891ef8019bSDavid S. Miller 4901ef8019bSDavid S. Miller static inline int slave_do_arp_validate(struct bonding *bond, 4911ef8019bSDavid S. Miller struct slave *slave) 4921ef8019bSDavid S. Miller { 4931ef8019bSDavid S. Miller return bond->params.arp_validate & (1 << bond_slave_state(slave)); 4941ef8019bSDavid S. Miller } 4951ef8019bSDavid S. Miller 4961ef8019bSDavid S. Miller static inline int slave_do_arp_validate_only(struct bonding *bond) 4971ef8019bSDavid S. Miller { 4981ef8019bSDavid S. Miller return bond->params.arp_validate & BOND_ARP_FILTER; 4991ef8019bSDavid S. Miller } 5001ef8019bSDavid S. Miller 5011ef8019bSDavid S. Miller static inline int bond_is_ip_target_ok(__be32 addr) 5021ef8019bSDavid S. Miller { 5031ef8019bSDavid S. Miller return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr); 5041ef8019bSDavid S. Miller } 5051ef8019bSDavid S. Miller 506c4caa500SHangbin Liu #if IS_ENABLED(CONFIG_IPV6) 507129e3c1bSHangbin Liu static inline int bond_is_ip6_target_ok(struct in6_addr *addr) 508129e3c1bSHangbin Liu { 509129e3c1bSHangbin Liu return !ipv6_addr_any(addr) && 510129e3c1bSHangbin Liu !ipv6_addr_loopback(addr) && 511129e3c1bSHangbin Liu !ipv6_addr_is_multicast(addr); 512129e3c1bSHangbin Liu } 513c4caa500SHangbin Liu #endif 514129e3c1bSHangbin Liu 5151ef8019bSDavid S. Miller /* Get the oldest arp which we've received on this slave for bond's 5161ef8019bSDavid S. Miller * arp_targets. 5171ef8019bSDavid S. Miller */ 5181ef8019bSDavid S. Miller static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, 5191ef8019bSDavid S. Miller struct slave *slave) 5201ef8019bSDavid S. Miller { 5211ef8019bSDavid S. Miller int i = 1; 5221ef8019bSDavid S. Miller unsigned long ret = slave->target_last_arp_rx[0]; 5231ef8019bSDavid S. Miller 5241ef8019bSDavid S. Miller for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) 5251ef8019bSDavid S. Miller if (time_before(slave->target_last_arp_rx[i], ret)) 5261ef8019bSDavid S. Miller ret = slave->target_last_arp_rx[i]; 5271ef8019bSDavid S. Miller 5281ef8019bSDavid S. Miller return ret; 5291ef8019bSDavid S. Miller } 5301ef8019bSDavid S. Miller 5311ef8019bSDavid S. Miller static inline unsigned long slave_last_rx(struct bonding *bond, 5321ef8019bSDavid S. Miller struct slave *slave) 5331ef8019bSDavid S. Miller { 5341ef8019bSDavid S. Miller if (bond->params.arp_all_targets == BOND_ARP_TARGETS_ALL) 5351ef8019bSDavid S. Miller return slave_oldest_target_arp_rx(bond, slave); 5361ef8019bSDavid S. Miller 5371ef8019bSDavid S. Miller return slave->last_rx; 5381ef8019bSDavid S. Miller } 5391ef8019bSDavid S. Miller 54006799a90SVladimir Oltean static inline void slave_update_last_tx(struct slave *slave) 54106799a90SVladimir Oltean { 54206799a90SVladimir Oltean WRITE_ONCE(slave->last_tx, jiffies); 54306799a90SVladimir Oltean } 54406799a90SVladimir Oltean 54506799a90SVladimir Oltean static inline unsigned long slave_last_tx(struct slave *slave) 54606799a90SVladimir Oltean { 54706799a90SVladimir Oltean return READ_ONCE(slave->last_tx); 54806799a90SVladimir Oltean } 54906799a90SVladimir Oltean 5501ef8019bSDavid S. Miller #ifdef CONFIG_NET_POLL_CONTROLLER 551ae46f184SEric Dumazet static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 5521ef8019bSDavid S. Miller struct sk_buff *skb) 5531ef8019bSDavid S. Miller { 554ae46f184SEric Dumazet return netpoll_send_skb(slave->np, skb); 5551ef8019bSDavid S. Miller } 5561ef8019bSDavid S. Miller #else 557ae46f184SEric Dumazet static inline netdev_tx_t bond_netpoll_send_skb(const struct slave *slave, 5581ef8019bSDavid S. Miller struct sk_buff *skb) 5591ef8019bSDavid S. Miller { 560ae46f184SEric Dumazet BUG(); 561ae46f184SEric Dumazet return NETDEV_TX_OK; 5621ef8019bSDavid S. Miller } 5631ef8019bSDavid S. Miller #endif 5641ef8019bSDavid S. Miller 5651ef8019bSDavid S. Miller static inline void bond_set_slave_inactive_flags(struct slave *slave, 5661ef8019bSDavid S. Miller bool notify) 5671ef8019bSDavid S. Miller { 5681ef8019bSDavid S. Miller if (!bond_is_lb(slave->bond)) 5691ef8019bSDavid S. Miller bond_set_slave_state(slave, BOND_STATE_BACKUP, notify); 5701ef8019bSDavid S. Miller if (!slave->bond->params.all_slaves_active) 5711ef8019bSDavid S. Miller slave->inactive = 1; 5721ef8019bSDavid S. Miller } 5731ef8019bSDavid S. Miller 5741ef8019bSDavid S. Miller static inline void bond_set_slave_active_flags(struct slave *slave, 5751ef8019bSDavid S. Miller bool notify) 5761ef8019bSDavid S. Miller { 5771ef8019bSDavid S. Miller bond_set_slave_state(slave, BOND_STATE_ACTIVE, notify); 5781ef8019bSDavid S. Miller slave->inactive = 0; 5791ef8019bSDavid S. Miller } 5801ef8019bSDavid S. Miller 5811ef8019bSDavid S. Miller static inline bool bond_is_slave_inactive(struct slave *slave) 5821ef8019bSDavid S. Miller { 5831ef8019bSDavid S. Miller return slave->inactive; 5841ef8019bSDavid S. Miller } 5851ef8019bSDavid S. Miller 586f307668bSMahesh Bandewar static inline void bond_propose_link_state(struct slave *slave, int state) 58769a2338eSMoni Shoua { 588f307668bSMahesh Bandewar slave->link_new_state = state; 589f307668bSMahesh Bandewar } 590f307668bSMahesh Bandewar 591f307668bSMahesh Bandewar static inline void bond_commit_link_state(struct slave *slave, bool notify) 592f307668bSMahesh Bandewar { 5931899bb32SJay Vosburgh if (slave->link_new_state == BOND_LINK_NOCHANGE) 5945d397061SJiri Pirko return; 5955d397061SJiri Pirko 596f307668bSMahesh Bandewar slave->link = slave->link_new_state; 5975d397061SJiri Pirko if (notify) { 59869e61133SMoni Shoua bond_queue_slave_event(slave); 599f7c7eb7fSJiri Pirko bond_lower_state_changed(slave); 6005d397061SJiri Pirko slave->should_notify_link = 0; 6015d397061SJiri Pirko } else { 6025d397061SJiri Pirko if (slave->should_notify_link) 6035d397061SJiri Pirko slave->should_notify_link = 0; 6045d397061SJiri Pirko else 6055d397061SJiri Pirko slave->should_notify_link = 1; 6065d397061SJiri Pirko } 6075d397061SJiri Pirko } 6085d397061SJiri Pirko 609f307668bSMahesh Bandewar static inline void bond_set_slave_link_state(struct slave *slave, int state, 610f307668bSMahesh Bandewar bool notify) 611f307668bSMahesh Bandewar { 612f307668bSMahesh Bandewar bond_propose_link_state(slave, state); 613f307668bSMahesh Bandewar bond_commit_link_state(slave, notify); 614f307668bSMahesh Bandewar } 615f307668bSMahesh Bandewar 6165d397061SJiri Pirko static inline void bond_slave_link_notify(struct bonding *bond) 6175d397061SJiri Pirko { 6185d397061SJiri Pirko struct list_head *iter; 6195d397061SJiri Pirko struct slave *tmp; 6205d397061SJiri Pirko 6215d397061SJiri Pirko bond_for_each_slave(bond, tmp, iter) { 6225d397061SJiri Pirko if (tmp->should_notify_link) { 6235d397061SJiri Pirko bond_queue_slave_event(tmp); 624f7c7eb7fSJiri Pirko bond_lower_state_changed(tmp); 6255d397061SJiri Pirko tmp->should_notify_link = 0; 6265d397061SJiri Pirko } 6275d397061SJiri Pirko } 62869a2338eSMoni Shoua } 62969a2338eSMoni Shoua 6301ef8019bSDavid S. Miller static inline __be32 bond_confirm_addr(struct net_device *dev, __be32 dst, __be32 local) 6311ef8019bSDavid S. Miller { 6321ef8019bSDavid S. Miller struct in_device *in_dev; 6331ef8019bSDavid S. Miller __be32 addr = 0; 6341ef8019bSDavid S. Miller 6351ef8019bSDavid S. Miller rcu_read_lock(); 6361ef8019bSDavid S. Miller in_dev = __in_dev_get_rcu(dev); 6371ef8019bSDavid S. Miller 6381ef8019bSDavid S. Miller if (in_dev) 6391ef8019bSDavid S. Miller addr = inet_confirm_addr(dev_net(dev), in_dev, dst, local, 6401ef8019bSDavid S. Miller RT_SCOPE_HOST); 6411ef8019bSDavid S. Miller rcu_read_unlock(); 6421ef8019bSDavid S. Miller return addr; 6431ef8019bSDavid S. Miller } 6441ef8019bSDavid S. Miller 6451ef8019bSDavid S. Miller struct bond_net { 6461ef8019bSDavid S. Miller struct net *net; /* Associated network namespace */ 6471ef8019bSDavid S. Miller struct list_head dev_list; 6481ef8019bSDavid S. Miller #ifdef CONFIG_PROC_FS 6491ef8019bSDavid S. Miller struct proc_dir_entry *proc_dir; 6501ef8019bSDavid S. Miller #endif 6511ef8019bSDavid S. Miller struct class_attribute class_attr_bonding_masters; 6521ef8019bSDavid S. Miller }; 6531ef8019bSDavid S. Miller 6544e24be01SHangbin Liu int bond_rcv_validate(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); 655ae46f184SEric Dumazet netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev); 6561ef8019bSDavid S. Miller int bond_create(struct net *net, const char *name); 6571ef8019bSDavid S. Miller int bond_create_sysfs(struct bond_net *net); 6581ef8019bSDavid S. Miller void bond_destroy_sysfs(struct bond_net *net); 6591ef8019bSDavid S. Miller void bond_prepare_sysfs_group(struct bonding *bond); 6601ef8019bSDavid S. Miller int bond_sysfs_slave_add(struct slave *slave); 6611ef8019bSDavid S. Miller void bond_sysfs_slave_del(struct slave *slave); 66233eaf2a6SDavid Ahern int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, 66333eaf2a6SDavid Ahern struct netlink_ext_ack *extack); 6641ef8019bSDavid S. Miller int bond_release(struct net_device *bond_dev, struct net_device *slave_dev); 6651ef8019bSDavid S. Miller u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb); 6662477bc9aSJonathan Toppins int bond_set_carrier(struct bonding *bond); 6671ef8019bSDavid S. Miller void bond_select_active_slave(struct bonding *bond); 6681ef8019bSDavid S. Miller void bond_change_active_slave(struct bonding *bond, struct slave *new_active); 6691ef8019bSDavid S. Miller void bond_create_debugfs(void); 6701ef8019bSDavid S. Miller void bond_destroy_debugfs(void); 6711ef8019bSDavid S. Miller void bond_debug_register(struct bonding *bond); 6721ef8019bSDavid S. Miller void bond_debug_unregister(struct bonding *bond); 6731ef8019bSDavid S. Miller void bond_debug_reregister(struct bonding *bond); 6741ef8019bSDavid S. Miller const char *bond_mode_name(int mode); 6751ef8019bSDavid S. Miller void bond_setup(struct net_device *bond_dev); 6761ef8019bSDavid S. Miller unsigned int bond_get_num_tx_queues(void); 6771ef8019bSDavid S. Miller int bond_netlink_init(void); 6781ef8019bSDavid S. Miller void bond_netlink_fini(void); 6791ef8019bSDavid S. Miller struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); 6801ef8019bSDavid S. Miller const char *bond_slave_link_status(s8 link); 6811ef8019bSDavid S. Miller struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, 6821ef8019bSDavid S. Miller struct net_device *end_dev, 6831ef8019bSDavid S. Miller int level); 6841ef8019bSDavid S. Miller int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); 6851ef8019bSDavid S. Miller void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); 686ea8ffc08SMahesh Bandewar void bond_work_init_all(struct bonding *bond); 6871ef8019bSDavid S. Miller 6881ef8019bSDavid S. Miller #ifdef CONFIG_PROC_FS 6891ef8019bSDavid S. Miller void bond_create_proc_entry(struct bonding *bond); 6901ef8019bSDavid S. Miller void bond_remove_proc_entry(struct bonding *bond); 6911ef8019bSDavid S. Miller void bond_create_proc_dir(struct bond_net *bn); 6921ef8019bSDavid S. Miller void bond_destroy_proc_dir(struct bond_net *bn); 6931ef8019bSDavid S. Miller #else 6941ef8019bSDavid S. Miller static inline void bond_create_proc_entry(struct bonding *bond) 6951ef8019bSDavid S. Miller { 6961ef8019bSDavid S. Miller } 6971ef8019bSDavid S. Miller 6981ef8019bSDavid S. Miller static inline void bond_remove_proc_entry(struct bonding *bond) 6991ef8019bSDavid S. Miller { 7001ef8019bSDavid S. Miller } 7011ef8019bSDavid S. Miller 7021ef8019bSDavid S. Miller static inline void bond_create_proc_dir(struct bond_net *bn) 7031ef8019bSDavid S. Miller { 7041ef8019bSDavid S. Miller } 7051ef8019bSDavid S. Miller 7061ef8019bSDavid S. Miller static inline void bond_destroy_proc_dir(struct bond_net *bn) 7071ef8019bSDavid S. Miller { 7081ef8019bSDavid S. Miller } 7091ef8019bSDavid S. Miller #endif 7101ef8019bSDavid S. Miller 7111ef8019bSDavid S. Miller static inline struct slave *bond_slave_has_mac(struct bonding *bond, 7121ef8019bSDavid S. Miller const u8 *mac) 7131ef8019bSDavid S. Miller { 7141ef8019bSDavid S. Miller struct list_head *iter; 7151ef8019bSDavid S. Miller struct slave *tmp; 7161ef8019bSDavid S. Miller 7171ef8019bSDavid S. Miller bond_for_each_slave(bond, tmp, iter) 7181ef8019bSDavid S. Miller if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 7191ef8019bSDavid S. Miller return tmp; 7201ef8019bSDavid S. Miller 7211ef8019bSDavid S. Miller return NULL; 7221ef8019bSDavid S. Miller } 7231ef8019bSDavid S. Miller 7241ef8019bSDavid S. Miller /* Caller must hold rcu_read_lock() for read */ 7251ef8019bSDavid S. Miller static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac) 7261ef8019bSDavid S. Miller { 7271ef8019bSDavid S. Miller struct list_head *iter; 7281ef8019bSDavid S. Miller struct slave *tmp; 7291ef8019bSDavid S. Miller struct netdev_hw_addr *ha; 7301ef8019bSDavid S. Miller 7311ef8019bSDavid S. Miller bond_for_each_slave_rcu(bond, tmp, iter) 7321ef8019bSDavid S. Miller if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr)) 7331ef8019bSDavid S. Miller return true; 7341ef8019bSDavid S. Miller 7351ef8019bSDavid S. Miller if (netdev_uc_empty(bond->dev)) 7361ef8019bSDavid S. Miller return false; 7371ef8019bSDavid S. Miller 7381ef8019bSDavid S. Miller netdev_for_each_uc_addr(ha, bond->dev) 7391ef8019bSDavid S. Miller if (ether_addr_equal_64bits(mac, ha->addr)) 7401ef8019bSDavid S. Miller return true; 7411ef8019bSDavid S. Miller 7421ef8019bSDavid S. Miller return false; 7431ef8019bSDavid S. Miller } 7441ef8019bSDavid S. Miller 7451ef8019bSDavid S. Miller /* Check if the ip is present in arp ip list, or first free slot if ip == 0 7461ef8019bSDavid S. Miller * Returns -1 if not found, index if found 7471ef8019bSDavid S. Miller */ 7481ef8019bSDavid S. Miller static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) 7491ef8019bSDavid S. Miller { 7501ef8019bSDavid S. Miller int i; 7511ef8019bSDavid S. Miller 7521ef8019bSDavid S. Miller for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) 7531ef8019bSDavid S. Miller if (targets[i] == ip) 7541ef8019bSDavid S. Miller return i; 7551ef8019bSDavid S. Miller else if (targets[i] == 0) 7561ef8019bSDavid S. Miller break; 7571ef8019bSDavid S. Miller 7581ef8019bSDavid S. Miller return -1; 7591ef8019bSDavid S. Miller } 7601ef8019bSDavid S. Miller 761c4caa500SHangbin Liu #if IS_ENABLED(CONFIG_IPV6) 7624e24be01SHangbin Liu static inline int bond_get_targets_ip6(struct in6_addr *targets, struct in6_addr *ip) 7634e24be01SHangbin Liu { 764*4598380fSHangbin Liu struct in6_addr mcaddr; 7654e24be01SHangbin Liu int i; 7664e24be01SHangbin Liu 767*4598380fSHangbin Liu for (i = 0; i < BOND_MAX_NS_TARGETS; i++) { 768*4598380fSHangbin Liu addrconf_addr_solict_mult(&targets[i], &mcaddr); 769*4598380fSHangbin Liu if ((ipv6_addr_equal(&targets[i], ip)) || 770*4598380fSHangbin Liu (ipv6_addr_equal(&mcaddr, ip))) 7714e24be01SHangbin Liu return i; 7724e24be01SHangbin Liu else if (ipv6_addr_any(&targets[i])) 7734e24be01SHangbin Liu break; 774*4598380fSHangbin Liu } 7754e24be01SHangbin Liu 7764e24be01SHangbin Liu return -1; 7774e24be01SHangbin Liu } 778c4caa500SHangbin Liu #endif 7794e24be01SHangbin Liu 7801ef8019bSDavid S. Miller /* exported from bond_main.c */ 781c7d03a00SAlexey Dobriyan extern unsigned int bond_net_id; 7821ef8019bSDavid S. Miller 7831ef8019bSDavid S. Miller /* exported from bond_netlink.c */ 7841ef8019bSDavid S. Miller extern struct rtnl_link_ops bond_link_ops; 7851ef8019bSDavid S. Miller 786b9ad3e9fSJamie Iles /* exported from bond_sysfs_slave.c */ 787b9ad3e9fSJamie Iles extern const struct sysfs_ops slave_sysfs_ops; 788b9ad3e9fSJamie Iles 7891d9a143eSBenjamin Poirier /* exported from bond_3ad.c */ 7901d9a143eSBenjamin Poirier extern const u8 lacpdu_mcast_addr[]; 7911d9a143eSBenjamin Poirier 792ae46f184SEric Dumazet static inline netdev_tx_t bond_tx_drop(struct net_device *dev, struct sk_buff *skb) 7931ef8019bSDavid S. Miller { 794625788b5SEric Dumazet dev_core_stats_tx_dropped_inc(dev); 7951ef8019bSDavid S. Miller dev_kfree_skb_any(skb); 796ae46f184SEric Dumazet return NET_XMIT_DROP; 7971ef8019bSDavid S. Miller } 7981ef8019bSDavid S. Miller 7991ef8019bSDavid S. Miller #endif /* _NET_BONDING_H */ 800