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Release 4.12 include/net/bond_3ad.h

Directory: include/net
/*
 * 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

/* 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 */
	
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 = sizeof(churn_description) / sizeof(churn_description[0]); if (state >= max_size) state = max_size - 1; return churn_description[state]; }

Contributors

PersonTokensPropCommitsCommitProp
Mahesh Bandewar64100.00%1100.00%
Total64100.00%1100.00%

/* ========== 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 */

Overall Contributors

PersonTokensPropCommitsCommitProp
Jeff Garzik62966.07%27.41%
Mahesh Bandewar9810.29%27.41%
Joe Perches838.72%13.70%
Holger Eitzenberger394.10%622.22%
Jay Vosburgh323.36%311.11%
Nikolay Aleksandrov232.42%27.41%
Weiping Pan (潘卫平)90.95%13.70%
Al Viro90.95%13.70%
Mathieu Desnoyers60.63%13.70%
David S. Miller60.63%27.41%
Vitalii Demianets50.53%13.70%
Jiri Pirko40.42%13.70%
Richard Genoud40.42%13.70%
Jiri Bohac30.32%13.70%
Ding Tianhong10.11%13.70%
Eric Dumazet10.11%13.70%
Total952100.00%27100.00%
Directory: include/net
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