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linux/include/net/bond_3ad.h

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/*
* 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];
}
/* ========== 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 */
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