[mirror_ubuntu-jammy-kernel.git] / include / net / bond_3ad.h

/*
 * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 */

#ifndef _NET_BOND_3AD_H
#define _NET_BOND_3AD_H

#include <asm/byteorder.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/if_ether.h>

/* General definitions */
#define PKT_TYPE_LACPDU         cpu_to_be16(ETH_P_SLOW)
#define AD_TIMER_INTERVAL       100 /*msec*/

#define MULTICAST_LACPDU_ADDR    {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02}

#define AD_LACP_SLOW 0
#define AD_LACP_FAST 1

typedef struct mac_addr {
	u8 mac_addr_value[ETH_ALEN];
} __packed mac_addr_t;

enum {
	BOND_AD_STABLE = 0,
	BOND_AD_BANDWIDTH = 1,
	BOND_AD_COUNT = 2,
};

/* rx machine states(43.4.11 in the 802.3ad standard) */
typedef enum {
	AD_RX_DUMMY,
	AD_RX_INITIALIZE,	/* rx Machine */
	AD_RX_PORT_DISABLED,	/* rx Machine */
	AD_RX_LACP_DISABLED,	/* rx Machine */
	AD_RX_EXPIRED,		/* rx Machine */
	AD_RX_DEFAULTED,	/* rx Machine */
	AD_RX_CURRENT		/* rx Machine */
} rx_states_t;

/* periodic machine states(43.4.12 in the 802.3ad standard) */
typedef enum {
	AD_PERIODIC_DUMMY,
	AD_NO_PERIODIC,		/* periodic machine */
	AD_FAST_PERIODIC,	/* periodic machine */
	AD_SLOW_PERIODIC,	/* periodic machine */
	AD_PERIODIC_TX		/* periodic machine */
} periodic_states_t;

/* mux machine states(43.4.13 in the 802.3ad standard) */
typedef enum {
	AD_MUX_DUMMY,
	AD_MUX_DETACHED,	/* mux machine */
	AD_MUX_WAITING,		/* mux machine */
	AD_MUX_ATTACHED,	/* mux machine */
	AD_MUX_COLLECTING_DISTRIBUTING	/* mux machine */
} mux_states_t;

/* tx machine states(43.4.15 in the 802.3ad standard) */
typedef enum {
	AD_TX_DUMMY,
	AD_TRANSMIT		/* tx Machine */
} tx_states_t;

/* churn machine states(43.4.17 in the 802.3ad standard) */
typedef enum {
	 AD_CHURN_MONITOR, /* monitoring for churn */
	 AD_CHURN,         /* churn detected (error) */
	 AD_NO_CHURN       /* no churn (no error) */
} churn_state_t;

/* rx indication types */
typedef enum {
	AD_TYPE_LACPDU = 1,	/* type lacpdu */
	AD_TYPE_MARKER		/* type marker */
} pdu_type_t;

/* rx marker indication types */
typedef enum {
	AD_MARKER_INFORMATION_SUBTYPE = 1,	/* marker imformation subtype */
	AD_MARKER_RESPONSE_SUBTYPE		/* marker response subtype */
} bond_marker_subtype_t;

/* timers types(43.4.9 in the 802.3ad standard) */
typedef enum {
	AD_CURRENT_WHILE_TIMER,
	AD_ACTOR_CHURN_TIMER,
	AD_PERIODIC_TIMER,
	AD_PARTNER_CHURN_TIMER,
	AD_WAIT_WHILE_TIMER
} ad_timers_t;

#pragma pack(1)

/* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */
typedef struct lacpdu {
	u8 subtype;		/* = LACP(= 0x01) */
	u8 version_number;
	u8 tlv_type_actor_info;	/* = actor information(type/length/value) */
	u8 actor_information_length;	/* = 20 */
	__be16 actor_system_priority;
	struct mac_addr actor_system;
	__be16 actor_key;
	__be16 actor_port_priority;
	__be16 actor_port;
	u8 actor_state;
	u8 reserved_3_1[3];		/* = 0 */
	u8 tlv_type_partner_info;	/* = partner information */
	u8 partner_information_length;	/* = 20 */
	__be16 partner_system_priority;
	struct mac_addr partner_system;
	__be16 partner_key;
	__be16 partner_port_priority;
	__be16 partner_port;
	u8 partner_state;
	u8 reserved_3_2[3];		/* = 0 */
	u8 tlv_type_collector_info;	/* = collector information */
	u8 collector_information_length;/* = 16 */
	__be16 collector_max_delay;
	u8 reserved_12[12];
	u8 tlv_type_terminator;		/* = terminator */
	u8 terminator_length;		/* = 0 */
	u8 reserved_50[50];		/* = 0 */
} __packed lacpdu_t;

typedef struct lacpdu_header {
	struct ethhdr hdr;
	struct lacpdu lacpdu;
} __packed lacpdu_header_t;

/* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */
typedef struct bond_marker {
	u8 subtype;		/* = 0x02  (marker PDU) */
	u8 version_number;	/* = 0x01 */
	u8 tlv_type;		/* = 0x01  (marker information) */
	/* = 0x02  (marker response information) */
	u8 marker_length;	/* = 0x16 */
	u16 requester_port;	/* The number assigned to the port by the requester */
	struct mac_addr requester_system;	/* The requester's system id */
	u32 requester_transaction_id;		/* The transaction id allocated by the requester, */
	u16 pad;		/* = 0 */
	u8 tlv_type_terminator;	/* = 0x00 */
	u8 terminator_length;	/* = 0x00 */
	u8 reserved_90[90];	/* = 0 */
} __packed bond_marker_t;

typedef struct bond_marker_header {
	struct ethhdr hdr;
	struct bond_marker marker;
} __packed bond_marker_header_t;

#pragma pack()

struct slave;
struct bonding;
struct ad_info;
struct port;

#ifdef __ia64__
#pragma pack(8)
#endif

struct bond_3ad_stats {
	atomic64_t lacpdu_rx;
	atomic64_t lacpdu_tx;
	atomic64_t lacpdu_unknown_rx;
	atomic64_t lacpdu_illegal_rx;

	atomic64_t marker_rx;
	atomic64_t marker_tx;
	atomic64_t marker_resp_rx;
	atomic64_t marker_resp_tx;
	atomic64_t marker_unknown_rx;
};

/* aggregator structure(43.4.5 in the 802.3ad standard) */
typedef struct aggregator {
	struct mac_addr aggregator_mac_address;
	u16 aggregator_identifier;
	bool is_individual;
	u16 actor_admin_aggregator_key;
	u16 actor_oper_aggregator_key;
	struct mac_addr partner_system;
	u16 partner_system_priority;
	u16 partner_oper_aggregator_key;
	u16 receive_state;	/* BOOLEAN */
	u16 transmit_state;	/* BOOLEAN */
	struct port *lag_ports;
	/* ****** PRIVATE PARAMETERS ****** */
	struct slave *slave;	/* pointer to the bond slave that this aggregator belongs to */
	u16 is_active;		/* BOOLEAN. Indicates if this aggregator is active */
	u16 num_of_ports;
} aggregator_t;

struct port_params {
	struct mac_addr system;
	u16 system_priority;
	u16 key;
	u16 port_number;
	u16 port_priority;
	u16 port_state;
};

/* port structure(43.4.6 in the 802.3ad standard) */
typedef struct port {
	u16 actor_port_number;
	u16 actor_port_priority;
	struct mac_addr actor_system;	/* This parameter is added here although it is not specified in the standard, just for simplification */
	u16 actor_system_priority;	/* This parameter is added here although it is not specified in the standard, just for simplification */
	u16 actor_port_aggregator_identifier;
	bool ntt;
	u16 actor_admin_port_key;
	u16 actor_oper_port_key;
	u8 actor_admin_port_state;
	u8 actor_oper_port_state;

	struct port_params partner_admin;
	struct port_params partner_oper;

	bool is_enabled;

	/* ****** PRIVATE PARAMETERS ****** */
	u16 sm_vars;		/* all state machines variables for this port */
	rx_states_t sm_rx_state;	/* state machine rx state */
	u16 sm_rx_timer_counter;	/* state machine rx timer counter */
	periodic_states_t sm_periodic_state;	/* state machine periodic state */
	u16 sm_periodic_timer_counter;	/* state machine periodic timer counter */
	mux_states_t sm_mux_state;	/* state machine mux state */
	u16 sm_mux_timer_counter;	/* state machine mux timer counter */
	tx_states_t sm_tx_state;	/* state machine tx state */
	u16 sm_tx_timer_counter;	/* state machine tx timer counter(allways on - enter to transmit state 3 time per second) */
	u16 sm_churn_actor_timer_counter;
	u16 sm_churn_partner_timer_counter;
	u32 churn_actor_count;
	u32 churn_partner_count;
	churn_state_t sm_churn_actor_state;
	churn_state_t sm_churn_partner_state;
	struct slave *slave;		/* pointer to the bond slave that this port belongs to */
	struct aggregator *aggregator;	/* pointer to an aggregator that this port related to */
	struct port *next_port_in_aggregator;	/* Next port on the linked list of the parent aggregator */
	u32 transaction_id;		/* continuous number for identification of Marker PDU's; */
	struct lacpdu lacpdu;		/* the lacpdu that will be sent for this port */
} port_t;

/* system structure */
struct ad_system {
	u16 sys_priority;
	struct mac_addr sys_mac_addr;
};

#ifdef __ia64__
#pragma pack()
#endif

/* ========== AD Exported structures to the main bonding code ========== */
#define BOND_AD_INFO(bond)   ((bond)->ad_info)
#define SLAVE_AD_INFO(slave) ((slave)->ad_info)

struct ad_bond_info {
	struct ad_system system;	/* 802.3ad system structure */
	u32 agg_select_timer;		/* Timer to select aggregator after all adapter's hand shakes */
	u16 aggregator_identifier;
};

struct ad_slave_info {
	struct aggregator aggregator;	/* 802.3ad aggregator structure */
	struct port port;		/* 802.3ad port structure */
	struct bond_3ad_stats stats;
	u16 id;
};

static inline const char *bond_3ad_churn_desc(churn_state_t state)
{
	static const char *const churn_description[] = {
		"monitoring",
		"churned",
		"none",
		"unknown"
	};
	int max_size = ARRAY_SIZE(churn_description);

	if (state >= max_size)
		state = max_size - 1;

	return churn_description[state];
}

/* ========== AD Exported functions to the main bonding code ========== */
void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution);
void bond_3ad_bind_slave(struct slave *slave);
void bond_3ad_unbind_slave(struct slave *slave);
void bond_3ad_state_machine_handler(struct work_struct *);
void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout);
void bond_3ad_adapter_speed_duplex_changed(struct slave *slave);
void bond_3ad_handle_link_change(struct slave *slave, char link);
int  bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info);
int  __bond_3ad_get_active_agg_info(struct bonding *bond,
				    struct ad_info *ad_info);
int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond,
			 struct slave *slave);
int bond_3ad_set_carrier(struct bonding *bond);
void bond_3ad_update_lacp_rate(struct bonding *bond);
void bond_3ad_update_ad_actor_settings(struct bonding *bond);
#endif /* _NET_BOND_3AD_H */
Commit	Line	Data
	1	/*
	2	* Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of the GNU General Public License as published by the Free
	6	* Software Foundation; either version 2 of the License, or (at your option)
	7	* any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
	13	*
	14	* You should have received a copy of the GNU General Public License along with
	15	* this program; if not, write to the Free Software Foundation, Inc., 59
	16	* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	17	*
	18	* The full GNU General Public License is included in this distribution in the
	19	* file called LICENSE.
	20	*
	21	*/
	22
	23	#ifndef _NET_BOND_3AD_H
	24	#define _NET_BOND_3AD_H
	25
	26	#include <asm/byteorder.h>
	27	#include <linux/skbuff.h>
	28	#include <linux/netdevice.h>
	29	#include <linux/if_ether.h>
	30
	31	/* General definitions */
	32	#define PKT_TYPE_LACPDU cpu_to_be16(ETH_P_SLOW)
	33	#define AD_TIMER_INTERVAL 100 /msec/
	34
	35	#define MULTICAST_LACPDU_ADDR {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02}
	36
	37	#define AD_LACP_SLOW 0
	38	#define AD_LACP_FAST 1
	39
	40	typedef struct mac_addr {
	41	u8 mac_addr_value[ETH_ALEN];
	42	} __packed mac_addr_t;
	43
	44	enum {
	45	BOND_AD_STABLE = 0,
	46	BOND_AD_BANDWIDTH = 1,
	47	BOND_AD_COUNT = 2,
	48	};
	49
	50	/* rx machine states(43.4.11 in the 802.3ad standard) */
	51	typedef enum {
	52	AD_RX_DUMMY,
	53	AD_RX_INITIALIZE, /* rx Machine */
	54	AD_RX_PORT_DISABLED, /* rx Machine */
	55	AD_RX_LACP_DISABLED, /* rx Machine */
	56	AD_RX_EXPIRED, /* rx Machine */
	57	AD_RX_DEFAULTED, /* rx Machine */
	58	AD_RX_CURRENT /* rx Machine */
	59	} rx_states_t;
	60
	61	/* periodic machine states(43.4.12 in the 802.3ad standard) */
	62	typedef enum {
	63	AD_PERIODIC_DUMMY,
	64	AD_NO_PERIODIC, /* periodic machine */
	65	AD_FAST_PERIODIC, /* periodic machine */
	66	AD_SLOW_PERIODIC, /* periodic machine */
	67	AD_PERIODIC_TX /* periodic machine */
	68	} periodic_states_t;
	69
	70	/* mux machine states(43.4.13 in the 802.3ad standard) */
	71	typedef enum {
	72	AD_MUX_DUMMY,
	73	AD_MUX_DETACHED, /* mux machine */
	74	AD_MUX_WAITING, /* mux machine */
	75	AD_MUX_ATTACHED, /* mux machine */
	76	AD_MUX_COLLECTING_DISTRIBUTING /* mux machine */
	77	} mux_states_t;
	78
	79	/* tx machine states(43.4.15 in the 802.3ad standard) */
	80	typedef enum {
	81	AD_TX_DUMMY,
	82	AD_TRANSMIT /* tx Machine */
	83	} tx_states_t;
	84
	85	/* churn machine states(43.4.17 in the 802.3ad standard) */
	86	typedef enum {
	87	AD_CHURN_MONITOR, /* monitoring for churn */
	88	AD_CHURN, /* churn detected (error) */
	89	AD_NO_CHURN /* no churn (no error) */
	90	} churn_state_t;
	91
	92	/* rx indication types */
	93	typedef enum {
	94	AD_TYPE_LACPDU = 1, /* type lacpdu */
	95	AD_TYPE_MARKER /* type marker */
	96	} pdu_type_t;
	97
	98	/* rx marker indication types */
	99	typedef enum {
	100	AD_MARKER_INFORMATION_SUBTYPE = 1, /* marker imformation subtype */
	101	AD_MARKER_RESPONSE_SUBTYPE /* marker response subtype */
	102	} bond_marker_subtype_t;
	103
	104	/* timers types(43.4.9 in the 802.3ad standard) */
	105	typedef enum {
	106	AD_CURRENT_WHILE_TIMER,
	107	AD_ACTOR_CHURN_TIMER,
	108	AD_PERIODIC_TIMER,
	109	AD_PARTNER_CHURN_TIMER,
	110	AD_WAIT_WHILE_TIMER
	111	} ad_timers_t;
	112
	113	#pragma pack(1)
	114
	115	/* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */
	116	typedef struct lacpdu {
	117	u8 subtype; /* = LACP(= 0x01) */
	118	u8 version_number;
	119	u8 tlv_type_actor_info; /* = actor information(type/length/value) */
	120	u8 actor_information_length; /* = 20 */
	121	__be16 actor_system_priority;
	122	struct mac_addr actor_system;
	123	__be16 actor_key;
	124	__be16 actor_port_priority;
	125	__be16 actor_port;
	126	u8 actor_state;
	127	u8 reserved_3_1[3]; /* = 0 */
	128	u8 tlv_type_partner_info; /* = partner information */
	129	u8 partner_information_length; /* = 20 */
	130	__be16 partner_system_priority;
	131	struct mac_addr partner_system;
	132	__be16 partner_key;
	133	__be16 partner_port_priority;
	134	__be16 partner_port;
	135	u8 partner_state;
	136	u8 reserved_3_2[3]; /* = 0 */
	137	u8 tlv_type_collector_info; /* = collector information */
	138	u8 collector_information_length;/* = 16 */
	139	__be16 collector_max_delay;
	140	u8 reserved_12[12];
	141	u8 tlv_type_terminator; /* = terminator */
	142	u8 terminator_length; /* = 0 */
	143	u8 reserved_50[50]; /* = 0 */
	144	} __packed lacpdu_t;
	145
	146	typedef struct lacpdu_header {
	147	struct ethhdr hdr;
	148	struct lacpdu lacpdu;
	149	} __packed lacpdu_header_t;
	150
	151	/* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */
	152	typedef struct bond_marker {
	153	u8 subtype; /* = 0x02 (marker PDU) */
	154	u8 version_number; /* = 0x01 */
	155	u8 tlv_type; /* = 0x01 (marker information) */
	156	/* = 0x02 (marker response information) */
	157	u8 marker_length; /* = 0x16 */
	158	u16 requester_port; /* The number assigned to the port by the requester */
	159	struct mac_addr requester_system; /* The requester's system id */
	160	u32 requester_transaction_id; /* The transaction id allocated by the requester, */
	161	u16 pad; /* = 0 */
	162	u8 tlv_type_terminator; /* = 0x00 */
	163	u8 terminator_length; /* = 0x00 */
	164	u8 reserved_90[90]; /* = 0 */
	165	} __packed bond_marker_t;
	166
	167	typedef struct bond_marker_header {
	168	struct ethhdr hdr;
	169	struct bond_marker marker;
	170	} __packed bond_marker_header_t;
	171
	172	#pragma pack()
	173
	174	struct slave;
	175	struct bonding;
	176	struct ad_info;
	177	struct port;
	178
	179	#ifdef __ia64__
	180	#pragma pack(8)
	181	#endif
	182
	183	struct bond_3ad_stats {
	184	atomic64_t lacpdu_rx;
	185	atomic64_t lacpdu_tx;
	186	atomic64_t lacpdu_unknown_rx;
	187	atomic64_t lacpdu_illegal_rx;
	188
	189	atomic64_t marker_rx;
	190	atomic64_t marker_tx;
	191	atomic64_t marker_resp_rx;
	192	atomic64_t marker_resp_tx;
	193	atomic64_t marker_unknown_rx;
	194	};
	195
	196	/* aggregator structure(43.4.5 in the 802.3ad standard) */
	197	typedef struct aggregator {
	198	struct mac_addr aggregator_mac_address;
	199	u16 aggregator_identifier;
	200	bool is_individual;
	201	u16 actor_admin_aggregator_key;
	202	u16 actor_oper_aggregator_key;
	203	struct mac_addr partner_system;
	204	u16 partner_system_priority;
	205	u16 partner_oper_aggregator_key;
	206	u16 receive_state; /* BOOLEAN */
	207	u16 transmit_state; /* BOOLEAN */
	208	struct port *lag_ports;
	209	/* **** PRIVATE PARAMETERS **** */
	210	struct slave slave; / pointer to the bond slave that this aggregator belongs to */
	211	u16 is_active; /* BOOLEAN. Indicates if this aggregator is active */
	212	u16 num_of_ports;
	213	} aggregator_t;
	214
	215	struct port_params {
	216	struct mac_addr system;
	217	u16 system_priority;
	218	u16 key;
	219	u16 port_number;
	220	u16 port_priority;
	221	u16 port_state;
	222	};
	223
	224	/* port structure(43.4.6 in the 802.3ad standard) */
	225	typedef struct port {
	226	u16 actor_port_number;
	227	u16 actor_port_priority;
	228	struct mac_addr actor_system; /* This parameter is added here although it is not specified in the standard, just for simplification */
	229	u16 actor_system_priority; /* This parameter is added here although it is not specified in the standard, just for simplification */
	230	u16 actor_port_aggregator_identifier;
	231	bool ntt;
	232	u16 actor_admin_port_key;
	233	u16 actor_oper_port_key;
	234	u8 actor_admin_port_state;
	235	u8 actor_oper_port_state;
	236
	237	struct port_params partner_admin;
	238	struct port_params partner_oper;
	239
	240	bool is_enabled;
	241
	242	/* **** PRIVATE PARAMETERS **** */
	243	u16 sm_vars; /* all state machines variables for this port */
	244	rx_states_t sm_rx_state; /* state machine rx state */
	245	u16 sm_rx_timer_counter; /* state machine rx timer counter */
	246	periodic_states_t sm_periodic_state; /* state machine periodic state */
	247	u16 sm_periodic_timer_counter; /* state machine periodic timer counter */
	248	mux_states_t sm_mux_state; /* state machine mux state */
	249	u16 sm_mux_timer_counter; /* state machine mux timer counter */
	250	tx_states_t sm_tx_state; /* state machine tx state */
	251	u16 sm_tx_timer_counter; /* state machine tx timer counter(allways on - enter to transmit state 3 time per second) */
	252	u16 sm_churn_actor_timer_counter;
	253	u16 sm_churn_partner_timer_counter;
	254	u32 churn_actor_count;
	255	u32 churn_partner_count;
	256	churn_state_t sm_churn_actor_state;
	257	churn_state_t sm_churn_partner_state;
	258	struct slave slave; / pointer to the bond slave that this port belongs to */
	259	struct aggregator aggregator; / pointer to an aggregator that this port related to */
	260	struct port next_port_in_aggregator; / Next port on the linked list of the parent aggregator */
	261	u32 transaction_id; /* continuous number for identification of Marker PDU's; */
	262	struct lacpdu lacpdu; /* the lacpdu that will be sent for this port */
	263	} port_t;
	264
	265	/* system structure */
	266	struct ad_system {
	267	u16 sys_priority;
	268	struct mac_addr sys_mac_addr;
	269	};
	270
	271	#ifdef __ia64__
	272	#pragma pack()
	273	#endif
	274
	275	/* ========== AD Exported structures to the main bonding code ========== */
	276	#define BOND_AD_INFO(bond) ((bond)->ad_info)
	277	#define SLAVE_AD_INFO(slave) ((slave)->ad_info)
	278
	279	struct ad_bond_info {
	280	struct ad_system system; /* 802.3ad system structure */
	281	u32 agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */
	282	u16 aggregator_identifier;
	283	};
	284
	285	struct ad_slave_info {
	286	struct aggregator aggregator; /* 802.3ad aggregator structure */
	287	struct port port; /* 802.3ad port structure */
	288	struct bond_3ad_stats stats;
	289	u16 id;
	290	};
	291
	292	static inline const char *bond_3ad_churn_desc(churn_state_t state)
	293	{
	294	static const char *const churn_description[] = {
	295	"monitoring",
	296	"churned",
	297	"none",
	298	"unknown"
	299	};
	300	int max_size = ARRAY_SIZE(churn_description);
	301
	302	if (state >= max_size)
	303	state = max_size - 1;
	304
	305	return churn_description[state];
	306	}
	307
	308	/* ========== AD Exported functions to the main bonding code ========== */
	309	void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution);
	310	void bond_3ad_bind_slave(struct slave *slave);
	311	void bond_3ad_unbind_slave(struct slave *slave);
	312	void bond_3ad_state_machine_handler(struct work_struct *);
	313	void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout);
	314	void bond_3ad_adapter_speed_duplex_changed(struct slave *slave);
	315	void bond_3ad_handle_link_change(struct slave *slave, char link);
	316	int bond_3ad_get_active_agg_info(struct bonding bond, struct ad_info ad_info);
	317	int __bond_3ad_get_active_agg_info(struct bonding *bond,
	318	struct ad_info *ad_info);
	319	int bond_3ad_lacpdu_recv(const struct sk_buff skb, struct bonding bond,
	320	struct slave *slave);
	321	int bond_3ad_set_carrier(struct bonding *bond);
	322	void bond_3ad_update_lacp_rate(struct bonding *bond);
	323	void bond_3ad_update_ad_actor_settings(struct bonding *bond);
	324	#endif /* _NET_BOND_3AD_H */
	325