include/linux/if_team.h - kernel/msm-4.9 - Gitiles

 /*
  * include/linux/if_team.h - Network team device driver header
  * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
  *
  * 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 <linux/netpoll.h>
 #include <net/sch_generic.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;
 };

 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

 	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,
 };

 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;
 	} 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;
 	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_ */
	/*
	* include/linux/if_team.h - Network team device driver header
	* Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com>
	*
	* 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 <linux/netpoll.h>
	#include <net/sch_generic.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;
	};

	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

	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,
	};

	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;
	} 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;
	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_ */