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Diffstat (limited to 'drivers/net/bonding/bond_3ad.h')
| -rw-r--r-- | drivers/net/bonding/bond_3ad.h | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/drivers/net/bonding/bond_3ad.h b/drivers/net/bonding/bond_3ad.h new file mode 100644 index 000000000000..f46823894187 --- /dev/null +++ b/drivers/net/bonding/bond_3ad.h @@ -0,0 +1,300 @@ +/* + * 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. + * + * + * Changes: + * + * 2003/05/01 - Tsippy Mendelson <tsippy.mendelson at intel dot com> and + * Amir Noam <amir.noam at intel dot com> + * - Added support for lacp_rate module param. + * + * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com> + * - Renamed bond_3ad_link_status_changed() to + * bond_3ad_handle_link_change() for compatibility with TLB. + * + * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com> + * - Code cleanup and style changes + */ + +#ifndef __BOND_3AD_H__ +#define __BOND_3AD_H__ + +#include <asm/byteorder.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> + +// General definitions +#define BOND_ETH_P_LACPDU 0x8809 +#define PKT_TYPE_LACPDU __constant_htons(BOND_ETH_P_LACPDU) +#define AD_TIMER_INTERVAL 100 /*msec*/ + +#define MULTICAST_LACPDU_ADDR {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02} +#define AD_MULTICAST_LACPDU_ADDR {MULTICAST_LACPDU_ADDR} + +#define AD_LACP_SLOW 0 +#define AD_LACP_FAST 1 + +typedef struct mac_addr { + u8 mac_addr_value[ETH_ALEN]; +} mac_addr_t; + +typedef enum { + AD_BANDWIDTH = 0, + AD_COUNT +} agg_selection_t; + +// 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; + +// 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 +} 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) + +typedef struct ad_header { + struct mac_addr destination_address; + struct mac_addr source_address; + u16 length_type; +} ad_header_t; + +// 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 + u16 actor_system_priority; + struct mac_addr actor_system; + u16 actor_key; + u16 actor_port_priority; + u16 actor_port; + u8 actor_state; + u8 reserved_3_1[3]; // = 0 + u8 tlv_type_partner_info; // = partner information + u8 partner_information_length; // = 20 + u16 partner_system_priority; + struct mac_addr partner_system; + u16 partner_key; + u16 partner_port_priority; + u16 partner_port; + u8 partner_state; + u8 reserved_3_2[3]; // = 0 + u8 tlv_type_collector_info; // = collector information + u8 collector_information_length; // = 16 + u16 collector_max_delay; + u8 reserved_12[12]; + u8 tlv_type_terminator; // = terminator + u8 terminator_length; // = 0 + u8 reserved_50[50]; // = 0 +} lacpdu_t; + +typedef struct lacpdu_header { + struct ad_header ad_header; + struct lacpdu lacpdu; +} lacpdu_header_t; + +// Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) +typedef struct 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 +} marker_t; + +typedef struct marker_header { + struct ad_header ad_header; + struct marker marker; +} 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; + u16 is_individual; // BOOLEAN + 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; + +// 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; + u16 ntt; // BOOLEAN + u16 actor_admin_port_key; + u16 actor_oper_port_key; + u8 actor_admin_port_state; + u8 actor_oper_port_state; + struct mac_addr partner_admin_system; + struct mac_addr partner_oper_system; + u16 partner_admin_system_priority; + u16 partner_oper_system_priority; + u16 partner_admin_key; + u16 partner_oper_key; + u16 partner_admin_port_number; + u16 partner_oper_port_number; + u16 partner_admin_port_priority; + u16 partner_oper_port_priority; + u8 partner_admin_port_state; + u8 partner_oper_port_state; + u16 is_enabled; // BOOLEAN + // ****** 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) + 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 +typedef struct ad_system { + u16 sys_priority; + struct mac_addr sys_mac_addr; +} ad_system_t; + +#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 { + ad_system_t system; // 802.3ad system structure + u32 agg_select_timer; // Timer to select aggregator after all adapter's hand shakes + u32 agg_select_mode; // Mode of selection of active aggregator(bandwidth/count) + int lacp_fast; /* whether fast periodic tx should be + * requested + */ + struct timer_list ad_timer; + struct packet_type ad_pkt_type; +}; + +struct ad_slave_info { + struct aggregator aggregator; // 802.3ad aggregator structure + struct port port; // 802.3ad port structure + spinlock_t rx_machine_lock; // To avoid race condition between callback and receive interrupt + u16 id; +}; + +// ================= AD Exported functions to the main bonding code ================== +void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution, int lacp_fast); +int bond_3ad_bind_slave(struct slave *slave); +void bond_3ad_unbind_slave(struct slave *slave); +void bond_3ad_state_machine_handler(struct bonding *bond); +void bond_3ad_adapter_speed_changed(struct slave *slave); +void bond_3ad_adapter_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_xmit_xor(struct sk_buff *skb, struct net_device *dev); +int bond_3ad_lacpdu_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type* ptype); +#endif //__BOND_3AD_H__ + |