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/* SPDX-License-Identifier: GPL-2.0-or-later / / * include/linux/if_team.h - Network team device driver header * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com> / #ifndef _LINUX_IF_TEAM_H_ #define _LINUX_IF_TEAM_H_ #include <linux/netpoll.h> #include <net/sch_generic.h> #include <linux/types.h> #include <uapi/linux/if_team.h> struct team_pcpu_stats { u64 rx_packets; u64 rx_bytes; u64 rx_multicast; u64 tx_packets; u64 tx_bytes; struct u64_stats_sync syncp; u32 rx_dropped; u32 tx_dropped; u32 rx_nohandler; }; struct team; struct team_port { struct net_device dev; struct hlist_node hlist; /* node in enabled ports hash list / struct list_head list; / node in ordinary list / struct team team; int index; /* index of enabled port. If disabled, it's set to -1 / bool linkup; / either state.linkup or user.linkup / struct { bool linkup; u32 speed; u8 duplex; } state; / Values set by userspace / struct { bool linkup; bool linkup_enabled; } user; / Custom gennetlink interface related flags / bool changed; bool removed; / * A place for storing original values of the device before it * become a port. / struct { unsigned char dev_addr[MAX_ADDR_LEN]; unsigned int mtu; } orig; #ifdef CONFIG_NET_POLL_CONTROLLER struct netpoll np; #endif s32 priority; /* lower number ~ higher priority / u16 queue_id; struct list_head qom_list; / node in queue override mapping list / struct rcu_head rcu; long mode_priv[0]; }; static inline struct team_port team_port_get_rcu(const struct net_device dev) { return rcu_dereference(dev->rx_handler_data); } static inline bool team_port_enabled(struct team_port port) { return port->index != -1; } static inline bool team_port_txable(struct team_port port) { return port->linkup && team_port_enabled(port); } static inline bool team_port_dev_txable(const struct net_device port_dev) { struct team_port port; bool txable; rcu_read_lock(); port = team_port_get_rcu(port_dev); txable = port ? team_port_txable(port) : false; rcu_read_unlock(); return txable; } #ifdef CONFIG_NET_POLL_CONTROLLER static inline void team_netpoll_send_skb(struct team_port port, struct sk_buff skb) { struct netpoll np = port->np; if (np) netpoll_send_skb(np, skb); } #else static inline void team_netpoll_send_skb(struct team_port port, struct sk_buff skb) { } #endif struct team_mode_ops { int (init)(struct team team); void (exit)(struct team team); rx_handler_result_t (receive)(struct team team, struct team_port port, struct sk_buff skb); bool (transmit)(struct team team, struct sk_buff skb); int (port_enter)(struct team team, struct team_port port); void (port_leave)(struct team team, struct team_port port); void (port_change_dev_addr)(struct team team, struct team_port port); void (port_enabled)(struct team team, struct team_port port); void (port_disabled)(struct team team, struct team_port port); }; extern int team_modeop_port_enter(struct team team, struct team_port port); extern void team_modeop_port_change_dev_addr(struct team team, struct team_port port); enum team_option_type { TEAM_OPTION_TYPE_U32, TEAM_OPTION_TYPE_STRING, TEAM_OPTION_TYPE_BINARY, TEAM_OPTION_TYPE_BOOL, TEAM_OPTION_TYPE_S32, }; struct team_option_inst_info { u32 array_index; struct team_port port; / != NULL if per-port / }; struct team_gsetter_ctx { union { u32 u32_val; const char str_val; struct { const void ptr; u32 len; } bin_val; bool bool_val; s32 s32_val; } data; struct team_option_inst_info info; }; struct team_option { struct list_head list; const char name; bool per_port; unsigned int array_size; / != 0 means the option is array / enum team_option_type type; int (init)(struct team team, struct team_option_inst_info info); int (getter)(struct team team, struct team_gsetter_ctx ctx); int (setter)(struct team team, struct team_gsetter_ctx ctx); }; extern void team_option_inst_set_change(struct team_option_inst_info opt_inst_info); extern void team_options_change_check(struct team team); struct team_mode { const char kind; struct module owner; size_t priv_size; size_t port_priv_size; const struct team_mode_ops ops; enum netdev_lag_tx_type lag_tx_type; }; #define TEAM_PORT_HASHBITS 4 #define TEAM_PORT_HASHENTRIES (1 << TEAM_PORT_HASHBITS) #define TEAM_MODE_PRIV_LONGS 4 #define TEAM_MODE_PRIV_SIZE (sizeof(long) TEAM_MODE_PRIV_LONGS) struct team { struct net_device dev; / associated netdevice / struct team_pcpu_stats __percpu pcpu_stats; const struct header_ops header_ops_cache; struct mutex lock; / used for overall locking, e.g. port lists write / / * List of enabled ports and their count / int en_port_count; struct hlist_head en_port_hlist[TEAM_PORT_HASHENTRIES]; struct list_head port_list; / list of all ports / struct list_head option_list; struct list_head option_inst_list; / list of option instances / const struct team_mode mode; struct team_mode_ops ops; bool user_carrier_enabled; bool queue_override_enabled; struct list_head qom_lists; / array of queue override mapping lists / bool port_mtu_change_allowed; bool notifier_ctx; struct { unsigned int count; unsigned int interval; / in ms / atomic_t count_pending; struct delayed_work dw; } notify_peers; struct { unsigned int count; unsigned int interval; / in ms / atomic_t count_pending; struct delayed_work dw; } mcast_rejoin; struct lock_class_key team_lock_key; long mode_priv[TEAM_MODE_PRIV_LONGS]; }; static inline int team_dev_queue_xmit(struct team team, struct team_port port, struct sk_buff skb) { BUILD_BUG_ON(sizeof(skb->queue_mapping) != sizeof(qdisc_skb_cb(skb)->slave_dev_queue_mapping)); skb_set_queue_mapping(skb, qdisc_skb_cb(skb)->slave_dev_queue_mapping); skb->dev = port->dev; if (unlikely(netpoll_tx_running(team->dev))) { team_netpoll_send_skb(port, skb); return 0; } return dev_queue_xmit(skb); } static inline struct hlist_head team_port_index_hash(struct team team, int port_index) { return &team->en_port_hlist[port_index & (TEAM_PORT_HASHENTRIES - 1)]; } static inline struct team_port team_get_port_by_index(struct team team, int port_index) { struct team_port port; struct hlist_head head = team_port_index_hash(team, port_index); hlist_for_each_entry(port, head, hlist) if (port->index == port_index) return port; return NULL; } static inline int team_num_to_port_index(struct team team, unsigned int num) { int en_port_count = READ_ONCE(team->en_port_count); if (unlikely(!en_port_count)) return 0; return num % en_port_count; } static inline struct team_port team_get_port_by_index_rcu(struct team team, int port_index) { struct team_port port; struct hlist_head head = team_port_index_hash(team, port_index); hlist_for_each_entry_rcu(port, head, hlist) if (port->index == port_index) return port; return NULL; } static inline struct team_port team_get_first_port_txable_rcu(struct team team, struct team_port port) { struct team_port cur; if (likely(team_port_txable(port))) return port; cur = port; list_for_each_entry_continue_rcu(cur, &team->port_list, list) if (team_port_txable(cur)) return cur; list_for_each_entry_rcu(cur, &team->port_list, list) { if (cur == port) break; if (team_port_txable(cur)) return cur; } return NULL; } extern int team_options_register(struct team team, const struct team_option option, size_t option_count); extern void team_options_unregister(struct team team, const struct team_option option, size_t option_count); extern int team_mode_register(const struct team_mode mode); extern void team_mode_unregister(const struct team_mode mode); #define TEAM_DEFAULT_NUM_TX_QUEUES 16 #define TEAM_DEFAULT_NUM_RX_QUEUES 16 #define MODULE_ALIAS_TEAM_MODE(kind) MODULE_ALIAS("team-mode-" kind) #endif / _LINUX_IF_TEAM_H_ */

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