283 lines
9.0 KiB
C
283 lines
9.0 KiB
C
/*
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* Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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*/
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#ifndef __BOND_3AD_H__
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#define __BOND_3AD_H__
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#include <asm/byteorder.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/if_ether.h>
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// General definitions
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#define PKT_TYPE_LACPDU cpu_to_be16(ETH_P_SLOW)
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#define AD_TIMER_INTERVAL 100 /*msec*/
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#define MULTICAST_LACPDU_ADDR {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02}
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#define AD_LACP_SLOW 0
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#define AD_LACP_FAST 1
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typedef struct mac_addr {
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u8 mac_addr_value[ETH_ALEN];
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} __packed mac_addr_t;
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enum {
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BOND_AD_STABLE = 0,
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BOND_AD_BANDWIDTH = 1,
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BOND_AD_COUNT = 2,
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};
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// rx machine states(43.4.11 in the 802.3ad standard)
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typedef enum {
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AD_RX_DUMMY,
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AD_RX_INITIALIZE, // rx Machine
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AD_RX_PORT_DISABLED, // rx Machine
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AD_RX_LACP_DISABLED, // rx Machine
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AD_RX_EXPIRED, // rx Machine
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AD_RX_DEFAULTED, // rx Machine
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AD_RX_CURRENT // rx Machine
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} rx_states_t;
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// periodic machine states(43.4.12 in the 802.3ad standard)
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typedef enum {
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AD_PERIODIC_DUMMY,
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AD_NO_PERIODIC, // periodic machine
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AD_FAST_PERIODIC, // periodic machine
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AD_SLOW_PERIODIC, // periodic machine
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AD_PERIODIC_TX // periodic machine
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} periodic_states_t;
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// mux machine states(43.4.13 in the 802.3ad standard)
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typedef enum {
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AD_MUX_DUMMY,
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AD_MUX_DETACHED, // mux machine
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AD_MUX_WAITING, // mux machine
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AD_MUX_ATTACHED, // mux machine
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AD_MUX_COLLECTING_DISTRIBUTING // mux machine
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} mux_states_t;
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// tx machine states(43.4.15 in the 802.3ad standard)
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typedef enum {
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AD_TX_DUMMY,
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AD_TRANSMIT // tx Machine
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} tx_states_t;
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// rx indication types
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typedef enum {
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AD_TYPE_LACPDU = 1, // type lacpdu
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AD_TYPE_MARKER // type marker
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} pdu_type_t;
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// rx marker indication types
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typedef enum {
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AD_MARKER_INFORMATION_SUBTYPE = 1, // marker imformation subtype
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AD_MARKER_RESPONSE_SUBTYPE // marker response subtype
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} bond_marker_subtype_t;
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// timers types(43.4.9 in the 802.3ad standard)
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typedef enum {
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AD_CURRENT_WHILE_TIMER,
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AD_ACTOR_CHURN_TIMER,
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AD_PERIODIC_TIMER,
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AD_PARTNER_CHURN_TIMER,
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AD_WAIT_WHILE_TIMER
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} ad_timers_t;
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#pragma pack(1)
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// Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard)
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typedef struct lacpdu {
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u8 subtype; // = LACP(= 0x01)
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u8 version_number;
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u8 tlv_type_actor_info; // = actor information(type/length/value)
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u8 actor_information_length; // = 20
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__be16 actor_system_priority;
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struct mac_addr actor_system;
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__be16 actor_key;
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__be16 actor_port_priority;
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__be16 actor_port;
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u8 actor_state;
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u8 reserved_3_1[3]; // = 0
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u8 tlv_type_partner_info; // = partner information
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u8 partner_information_length; // = 20
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__be16 partner_system_priority;
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struct mac_addr partner_system;
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__be16 partner_key;
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__be16 partner_port_priority;
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__be16 partner_port;
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u8 partner_state;
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u8 reserved_3_2[3]; // = 0
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u8 tlv_type_collector_info; // = collector information
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u8 collector_information_length; // = 16
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__be16 collector_max_delay;
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u8 reserved_12[12];
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u8 tlv_type_terminator; // = terminator
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u8 terminator_length; // = 0
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u8 reserved_50[50]; // = 0
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} __packed lacpdu_t;
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typedef struct lacpdu_header {
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struct ethhdr hdr;
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struct lacpdu lacpdu;
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} __packed lacpdu_header_t;
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// Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard)
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typedef struct bond_marker {
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u8 subtype; // = 0x02 (marker PDU)
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u8 version_number; // = 0x01
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u8 tlv_type; // = 0x01 (marker information)
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// = 0x02 (marker response information)
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u8 marker_length; // = 0x16
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u16 requester_port; // The number assigned to the port by the requester
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struct mac_addr requester_system; // The requester's system id
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u32 requester_transaction_id; // The transaction id allocated by the requester,
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u16 pad; // = 0
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u8 tlv_type_terminator; // = 0x00
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u8 terminator_length; // = 0x00
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u8 reserved_90[90]; // = 0
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} __packed bond_marker_t;
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typedef struct bond_marker_header {
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struct ethhdr hdr;
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struct bond_marker marker;
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} __packed bond_marker_header_t;
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#pragma pack()
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struct slave;
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struct bonding;
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struct ad_info;
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struct port;
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#ifdef __ia64__
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#pragma pack(8)
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#endif
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// aggregator structure(43.4.5 in the 802.3ad standard)
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typedef struct aggregator {
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struct mac_addr aggregator_mac_address;
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u16 aggregator_identifier;
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bool is_individual;
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u16 actor_admin_aggregator_key;
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u16 actor_oper_aggregator_key;
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struct mac_addr partner_system;
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u16 partner_system_priority;
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u16 partner_oper_aggregator_key;
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u16 receive_state; // BOOLEAN
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u16 transmit_state; // BOOLEAN
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struct port *lag_ports;
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// ****** PRIVATE PARAMETERS ******
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struct slave *slave; // pointer to the bond slave that this aggregator belongs to
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u16 is_active; // BOOLEAN. Indicates if this aggregator is active
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u16 num_of_ports;
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} aggregator_t;
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struct port_params {
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struct mac_addr system;
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u16 system_priority;
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u16 key;
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u16 port_number;
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u16 port_priority;
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u16 port_state;
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};
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// port structure(43.4.6 in the 802.3ad standard)
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typedef struct port {
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u16 actor_port_number;
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u16 actor_port_priority;
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struct mac_addr actor_system; // This parameter is added here although it is not specified in the standard, just for simplification
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u16 actor_system_priority; // This parameter is added here although it is not specified in the standard, just for simplification
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u16 actor_port_aggregator_identifier;
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bool ntt;
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u16 actor_admin_port_key;
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u16 actor_oper_port_key;
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u8 actor_admin_port_state;
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u8 actor_oper_port_state;
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struct port_params partner_admin;
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struct port_params partner_oper;
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bool is_enabled;
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// ****** PRIVATE PARAMETERS ******
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u16 sm_vars; // all state machines variables for this port
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rx_states_t sm_rx_state; // state machine rx state
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u16 sm_rx_timer_counter; // state machine rx timer counter
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periodic_states_t sm_periodic_state;// state machine periodic state
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u16 sm_periodic_timer_counter; // state machine periodic timer counter
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mux_states_t sm_mux_state; // state machine mux state
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u16 sm_mux_timer_counter; // state machine mux timer counter
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tx_states_t sm_tx_state; // state machine tx state
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u16 sm_tx_timer_counter; // state machine tx timer counter(allways on - enter to transmit state 3 time per second)
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struct slave *slave; // pointer to the bond slave that this port belongs to
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struct aggregator *aggregator; // pointer to an aggregator that this port related to
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struct port *next_port_in_aggregator; // Next port on the linked list of the parent aggregator
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u32 transaction_id; // continuous number for identification of Marker PDU's;
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struct lacpdu lacpdu; // the lacpdu that will be sent for this port
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} port_t;
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// system structure
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struct ad_system {
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u16 sys_priority;
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struct mac_addr sys_mac_addr;
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};
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#ifdef __ia64__
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#pragma pack()
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#endif
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// ================= AD Exported structures to the main bonding code ==================
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#define BOND_AD_INFO(bond) ((bond)->ad_info)
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#define SLAVE_AD_INFO(slave) ((slave)->ad_info)
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struct ad_bond_info {
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struct ad_system system; /* 802.3ad system structure */
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u32 agg_select_timer; // Timer to select aggregator after all adapter's hand shakes
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};
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struct ad_slave_info {
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struct aggregator aggregator; // 802.3ad aggregator structure
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struct port port; // 802.3ad port structure
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spinlock_t state_machine_lock; /* mutex state machines vs.
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incoming LACPDU */
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u16 id;
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};
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// ================= AD Exported functions to the main bonding code ==================
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void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution);
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int bond_3ad_bind_slave(struct slave *slave);
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void bond_3ad_unbind_slave(struct slave *slave);
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void bond_3ad_state_machine_handler(struct work_struct *);
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void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout);
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void bond_3ad_adapter_speed_changed(struct slave *slave);
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void bond_3ad_adapter_duplex_changed(struct slave *slave);
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void bond_3ad_handle_link_change(struct slave *slave, char link);
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int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info);
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int bond_3ad_xmit_xor(struct sk_buff *skb, struct net_device *dev);
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void bond_3ad_lacpdu_recv(struct sk_buff *skb, struct bonding *bond,
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struct slave *slave);
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int bond_3ad_set_carrier(struct bonding *bond);
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void bond_3ad_update_lacp_rate(struct bonding *bond);
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#endif //__BOND_3AD_H__
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