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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.
+ *
+ *
+ * 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__
+