278 lines
6.5 KiB
C
278 lines
6.5 KiB
C
/*
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* include/linux/if_team.h - Network team device driver header
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* Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef _LINUX_IF_TEAM_H_
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#define _LINUX_IF_TEAM_H_
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#ifdef __KERNEL__
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struct team_pcpu_stats {
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u64 rx_packets;
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u64 rx_bytes;
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u64 rx_multicast;
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u64 tx_packets;
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u64 tx_bytes;
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struct u64_stats_sync syncp;
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u32 rx_dropped;
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u32 tx_dropped;
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};
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struct team;
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struct team_port {
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struct net_device *dev;
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struct hlist_node hlist; /* node in enabled ports hash list */
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struct list_head list; /* node in ordinary list */
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struct team *team;
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int index; /* index of enabled port. If disabled, it's set to -1 */
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bool linkup; /* either state.linkup or user.linkup */
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struct {
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bool linkup;
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u32 speed;
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u8 duplex;
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} state;
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/* Values set by userspace */
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struct {
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bool linkup;
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bool linkup_enabled;
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} user;
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/* Custom gennetlink interface related flags */
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bool changed;
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bool removed;
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/*
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* A place for storing original values of the device before it
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* become a port.
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*/
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struct {
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unsigned char dev_addr[MAX_ADDR_LEN];
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unsigned int mtu;
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} orig;
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struct rcu_head rcu;
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};
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struct team_mode_ops {
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int (*init)(struct team *team);
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void (*exit)(struct team *team);
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rx_handler_result_t (*receive)(struct team *team,
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struct team_port *port,
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struct sk_buff *skb);
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bool (*transmit)(struct team *team, struct sk_buff *skb);
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int (*port_enter)(struct team *team, struct team_port *port);
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void (*port_leave)(struct team *team, struct team_port *port);
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void (*port_change_mac)(struct team *team, struct team_port *port);
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};
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enum team_option_type {
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TEAM_OPTION_TYPE_U32,
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TEAM_OPTION_TYPE_STRING,
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TEAM_OPTION_TYPE_BINARY,
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TEAM_OPTION_TYPE_BOOL,
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};
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struct team_gsetter_ctx {
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union {
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u32 u32_val;
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const char *str_val;
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struct {
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const void *ptr;
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u32 len;
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} bin_val;
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bool bool_val;
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} data;
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struct team_port *port;
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};
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struct team_option {
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struct list_head list;
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const char *name;
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bool per_port;
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enum team_option_type type;
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int (*getter)(struct team *team, struct team_gsetter_ctx *ctx);
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int (*setter)(struct team *team, struct team_gsetter_ctx *ctx);
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};
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struct team_mode {
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struct list_head list;
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const char *kind;
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struct module *owner;
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size_t priv_size;
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const struct team_mode_ops *ops;
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};
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#define TEAM_PORT_HASHBITS 4
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#define TEAM_PORT_HASHENTRIES (1 << TEAM_PORT_HASHBITS)
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#define TEAM_MODE_PRIV_LONGS 4
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#define TEAM_MODE_PRIV_SIZE (sizeof(long) * TEAM_MODE_PRIV_LONGS)
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struct team {
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struct net_device *dev; /* associated netdevice */
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struct team_pcpu_stats __percpu *pcpu_stats;
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struct mutex lock; /* used for overall locking, e.g. port lists write */
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/*
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* List of enabled ports and their count
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*/
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int en_port_count;
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struct hlist_head en_port_hlist[TEAM_PORT_HASHENTRIES];
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struct list_head port_list; /* list of all ports */
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struct list_head option_list;
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struct list_head option_inst_list; /* list of option instances */
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const struct team_mode *mode;
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struct team_mode_ops ops;
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long mode_priv[TEAM_MODE_PRIV_LONGS];
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};
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static inline struct hlist_head *team_port_index_hash(struct team *team,
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int port_index)
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{
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return &team->en_port_hlist[port_index & (TEAM_PORT_HASHENTRIES - 1)];
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}
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static inline struct team_port *team_get_port_by_index(struct team *team,
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int port_index)
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{
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struct hlist_node *p;
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struct team_port *port;
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struct hlist_head *head = team_port_index_hash(team, port_index);
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hlist_for_each_entry(port, p, head, hlist)
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if (port->index == port_index)
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return port;
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return NULL;
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}
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static inline struct team_port *team_get_port_by_index_rcu(struct team *team,
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int port_index)
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{
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struct hlist_node *p;
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struct team_port *port;
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struct hlist_head *head = team_port_index_hash(team, port_index);
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hlist_for_each_entry_rcu(port, p, head, hlist)
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if (port->index == port_index)
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return port;
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return NULL;
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}
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extern int team_port_set_team_mac(struct team_port *port);
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extern int team_options_register(struct team *team,
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const struct team_option *option,
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size_t option_count);
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extern void team_options_unregister(struct team *team,
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const struct team_option *option,
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size_t option_count);
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extern int team_mode_register(struct team_mode *mode);
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extern int team_mode_unregister(struct team_mode *mode);
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#endif /* __KERNEL__ */
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#define TEAM_STRING_MAX_LEN 32
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/**********************************
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* NETLINK_GENERIC netlink family.
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**********************************/
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enum {
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TEAM_CMD_NOOP,
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TEAM_CMD_OPTIONS_SET,
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TEAM_CMD_OPTIONS_GET,
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TEAM_CMD_PORT_LIST_GET,
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__TEAM_CMD_MAX,
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TEAM_CMD_MAX = (__TEAM_CMD_MAX - 1),
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};
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enum {
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TEAM_ATTR_UNSPEC,
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TEAM_ATTR_TEAM_IFINDEX, /* u32 */
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TEAM_ATTR_LIST_OPTION, /* nest */
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TEAM_ATTR_LIST_PORT, /* nest */
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__TEAM_ATTR_MAX,
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TEAM_ATTR_MAX = __TEAM_ATTR_MAX - 1,
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};
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/* Nested layout of get/set msg:
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*
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* [TEAM_ATTR_LIST_OPTION]
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* [TEAM_ATTR_ITEM_OPTION]
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* [TEAM_ATTR_OPTION_*], ...
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* [TEAM_ATTR_ITEM_OPTION]
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* [TEAM_ATTR_OPTION_*], ...
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* ...
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* [TEAM_ATTR_LIST_PORT]
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* [TEAM_ATTR_ITEM_PORT]
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* [TEAM_ATTR_PORT_*], ...
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* [TEAM_ATTR_ITEM_PORT]
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* [TEAM_ATTR_PORT_*], ...
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* ...
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*/
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enum {
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TEAM_ATTR_ITEM_OPTION_UNSPEC,
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TEAM_ATTR_ITEM_OPTION, /* nest */
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__TEAM_ATTR_ITEM_OPTION_MAX,
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TEAM_ATTR_ITEM_OPTION_MAX = __TEAM_ATTR_ITEM_OPTION_MAX - 1,
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};
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enum {
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TEAM_ATTR_OPTION_UNSPEC,
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TEAM_ATTR_OPTION_NAME, /* string */
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TEAM_ATTR_OPTION_CHANGED, /* flag */
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TEAM_ATTR_OPTION_TYPE, /* u8 */
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TEAM_ATTR_OPTION_DATA, /* dynamic */
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TEAM_ATTR_OPTION_REMOVED, /* flag */
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TEAM_ATTR_OPTION_PORT_IFINDEX, /* u32 */ /* for per-port options */
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__TEAM_ATTR_OPTION_MAX,
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TEAM_ATTR_OPTION_MAX = __TEAM_ATTR_OPTION_MAX - 1,
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};
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enum {
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TEAM_ATTR_ITEM_PORT_UNSPEC,
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TEAM_ATTR_ITEM_PORT, /* nest */
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__TEAM_ATTR_ITEM_PORT_MAX,
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TEAM_ATTR_ITEM_PORT_MAX = __TEAM_ATTR_ITEM_PORT_MAX - 1,
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};
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enum {
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TEAM_ATTR_PORT_UNSPEC,
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TEAM_ATTR_PORT_IFINDEX, /* u32 */
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TEAM_ATTR_PORT_CHANGED, /* flag */
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TEAM_ATTR_PORT_LINKUP, /* flag */
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TEAM_ATTR_PORT_SPEED, /* u32 */
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TEAM_ATTR_PORT_DUPLEX, /* u8 */
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TEAM_ATTR_PORT_REMOVED, /* flag */
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__TEAM_ATTR_PORT_MAX,
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TEAM_ATTR_PORT_MAX = __TEAM_ATTR_PORT_MAX - 1,
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};
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/*
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* NETLINK_GENERIC related info
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*/
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#define TEAM_GENL_NAME "team"
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#define TEAM_GENL_VERSION 0x1
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#define TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME "change_event"
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#endif /* _LINUX_IF_TEAM_H_ */
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