312 lines
9.8 KiB
C
312 lines
9.8 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 _NET_BOND_3AD_H
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#define _NET_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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/* churn machine states(43.4.17 in the 802.3ad standard) */
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typedef enum {
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AD_CHURN_MONITOR, /* monitoring for churn */
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AD_CHURN, /* churn detected (error) */
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AD_NO_CHURN /* no churn (no error) */
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} churn_state_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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u16 sm_churn_actor_timer_counter;
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u16 sm_churn_partner_timer_counter;
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u32 churn_actor_count;
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u32 churn_partner_count;
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churn_state_t sm_churn_actor_state;
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churn_state_t sm_churn_partner_state;
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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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u16 aggregator_identifier;
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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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u16 id;
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};
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static inline const char *bond_3ad_churn_desc(churn_state_t state)
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{
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static const char *const churn_description[] = {
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"monitoring",
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"churned",
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"none",
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"unknown"
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};
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int max_size = ARRAY_SIZE(churn_description);
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if (state >= max_size)
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state = max_size - 1;
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return churn_description[state];
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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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void 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_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_get_active_agg_info(struct bonding *bond,
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struct ad_info *ad_info);
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int bond_3ad_lacpdu_recv(const 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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void bond_3ad_update_ad_actor_settings(struct bonding *bond);
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#endif /* _NET_BOND_3AD_H */
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