/* * include/linux/if_team.h - Network team device driver header * Copyright (c) 2011 Jiri Pirko * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #ifndef _LINUX_IF_TEAM_H_ #define _LINUX_IF_TEAM_H_ #ifdef __KERNEL__ #include #include 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; }; 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 */ long mode_priv[0]; }; 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); } #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 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(port->dev))) { team_netpoll_send_skb(port, skb); return 0; } return dev_queue_xmit(skb); } 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_mac)(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); }; 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; }; #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; 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 queue_override_enabled; struct list_head *qom_lists; /* array of queue override mapping lists */ long mode_priv[TEAM_MODE_PRIV_LONGS]; }; 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 hlist_node *p; struct team_port *port; struct hlist_head *head = team_port_index_hash(team, port_index); hlist_for_each_entry(port, p, head, hlist) if (port->index == port_index) return port; return NULL; } static inline struct team_port *team_get_port_by_index_rcu(struct team *team, int port_index) { struct hlist_node *p; struct team_port *port; struct hlist_head *head = team_port_index_hash(team, port_index); hlist_for_each_entry_rcu(port, p, head, hlist) if (port->index == port_index) return port; return NULL; } extern int team_port_set_team_mac(struct team_port *port); 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 #endif /* __KERNEL__ */ #define TEAM_STRING_MAX_LEN 32 /********************************** * NETLINK_GENERIC netlink family. **********************************/ enum { TEAM_CMD_NOOP, TEAM_CMD_OPTIONS_SET, TEAM_CMD_OPTIONS_GET, TEAM_CMD_PORT_LIST_GET, __TEAM_CMD_MAX, TEAM_CMD_MAX = (__TEAM_CMD_MAX - 1), }; enum { TEAM_ATTR_UNSPEC, TEAM_ATTR_TEAM_IFINDEX, /* u32 */ TEAM_ATTR_LIST_OPTION, /* nest */ TEAM_ATTR_LIST_PORT, /* nest */ __TEAM_ATTR_MAX, TEAM_ATTR_MAX = __TEAM_ATTR_MAX - 1, }; /* Nested layout of get/set msg: * * [TEAM_ATTR_LIST_OPTION] * [TEAM_ATTR_ITEM_OPTION] * [TEAM_ATTR_OPTION_*], ... * [TEAM_ATTR_ITEM_OPTION] * [TEAM_ATTR_OPTION_*], ... * ... * [TEAM_ATTR_LIST_PORT] * [TEAM_ATTR_ITEM_PORT] * [TEAM_ATTR_PORT_*], ... * [TEAM_ATTR_ITEM_PORT] * [TEAM_ATTR_PORT_*], ... * ... */ enum { TEAM_ATTR_ITEM_OPTION_UNSPEC, TEAM_ATTR_ITEM_OPTION, /* nest */ __TEAM_ATTR_ITEM_OPTION_MAX, TEAM_ATTR_ITEM_OPTION_MAX = __TEAM_ATTR_ITEM_OPTION_MAX - 1, }; enum { TEAM_ATTR_OPTION_UNSPEC, TEAM_ATTR_OPTION_NAME, /* string */ TEAM_ATTR_OPTION_CHANGED, /* flag */ TEAM_ATTR_OPTION_TYPE, /* u8 */ TEAM_ATTR_OPTION_DATA, /* dynamic */ TEAM_ATTR_OPTION_REMOVED, /* flag */ TEAM_ATTR_OPTION_PORT_IFINDEX, /* u32 */ /* for per-port options */ TEAM_ATTR_OPTION_ARRAY_INDEX, /* u32 */ /* for array options */ __TEAM_ATTR_OPTION_MAX, TEAM_ATTR_OPTION_MAX = __TEAM_ATTR_OPTION_MAX - 1, }; enum { TEAM_ATTR_ITEM_PORT_UNSPEC, TEAM_ATTR_ITEM_PORT, /* nest */ __TEAM_ATTR_ITEM_PORT_MAX, TEAM_ATTR_ITEM_PORT_MAX = __TEAM_ATTR_ITEM_PORT_MAX - 1, }; enum { TEAM_ATTR_PORT_UNSPEC, TEAM_ATTR_PORT_IFINDEX, /* u32 */ TEAM_ATTR_PORT_CHANGED, /* flag */ TEAM_ATTR_PORT_LINKUP, /* flag */ TEAM_ATTR_PORT_SPEED, /* u32 */ TEAM_ATTR_PORT_DUPLEX, /* u8 */ TEAM_ATTR_PORT_REMOVED, /* flag */ __TEAM_ATTR_PORT_MAX, TEAM_ATTR_PORT_MAX = __TEAM_ATTR_PORT_MAX - 1, }; /* * NETLINK_GENERIC related info */ #define TEAM_GENL_NAME "team" #define TEAM_GENL_VERSION 0x1 #define TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME "change_event" #endif /* _LINUX_IF_TEAM_H_ */