| /* |
| * 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 __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_LACP_SLOW 0 |
| #define AD_LACP_FAST 1 |
| |
| typedef struct mac_addr { |
| u8 mac_addr_value[ETH_ALEN]; |
| } 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; |
| |
| // 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) |
| |
| typedef struct ad_header { |
| struct mac_addr destination_address; |
| struct mac_addr source_address; |
| __be16 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 |
| __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 |
| } 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 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 |
| } bond_marker_t; |
| |
| typedef struct bond_marker_header { |
| struct ad_header ad_header; |
| struct bond_marker marker; |
| } 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) |
| 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 |
| 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 work_struct *); |
| void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout); |
| 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, struct net_device *orig_dev); |
| int bond_3ad_set_carrier(struct bonding *bond); |
| #endif //__BOND_3AD_H__ |
| |