/* * 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__ 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 hash list */ struct list_head list; /* node in ordinary list */ struct team *team; int index; /* * 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; bool linkup; u32 speed; u8 duplex; /* Custom gennetlink interface related flags */ bool changed; bool removed; struct rcu_head rcu; }; 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); }; enum team_option_type { TEAM_OPTION_TYPE_U32, TEAM_OPTION_TYPE_STRING, TEAM_OPTION_TYPE_BINARY, }; struct team_gsetter_ctx { union { u32 u32_val; const char *str_val; struct { const void *ptr; u32 len; } bin_val; } data; struct team_port *port; }; struct team_option { struct list_head list; const char *name; bool per_port; enum team_option_type type; int (*getter)(struct team *team, struct team_gsetter_ctx *ctx); int (*setter)(struct team *team, struct team_gsetter_ctx *ctx); }; struct team_mode { struct list_head list; const char *kind; struct module *owner; size_t 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 */ /* * port lists with port count */ int port_count; struct hlist_head port_hlist[TEAM_PORT_HASHENTRIES]; struct list_head port_list; 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; long mode_priv[TEAM_MODE_PRIV_LONGS]; }; static inline struct hlist_head *team_port_index_hash(struct team *team, int port_index) { return &team->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(struct team_mode *mode); extern int team_mode_unregister(struct team_mode *mode); #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_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_ */