1/* 2 * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License as published by the Free 6 * Software Foundation; either version 2 of the License, or (at your option) 7 * any later version. 8 * 9 * This program is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program; if not, write to the Free Software Foundation, Inc., 59 16 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17 * 18 * The full GNU General Public License is included in this distribution in the 19 * file called LICENSE. 20 * 21 */ 22 23#ifndef __BOND_3AD_H__ 24#define __BOND_3AD_H__ 25 26#include <asm/byteorder.h> 27#include <linux/skbuff.h> 28#include <linux/netdevice.h> 29 30// General definitions 31#define BOND_ETH_P_LACPDU 0x8809 32#define PKT_TYPE_LACPDU __constant_htons(BOND_ETH_P_LACPDU) 33#define AD_TIMER_INTERVAL 100 /*msec*/ 34 35#define MULTICAST_LACPDU_ADDR {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02} 36#define AD_MULTICAST_LACPDU_ADDR {MULTICAST_LACPDU_ADDR} 37 38#define AD_LACP_SLOW 0 39#define AD_LACP_FAST 1 40 41typedef struct mac_addr { 42 u8 mac_addr_value[ETH_ALEN]; 43} mac_addr_t; 44 45typedef enum { 46 AD_BANDWIDTH = 0, 47 AD_COUNT 48} agg_selection_t; 49 50// rx machine states(43.4.11 in the 802.3ad standard) 51typedef enum { 52 AD_RX_DUMMY, 53 AD_RX_INITIALIZE, // rx Machine 54 AD_RX_PORT_DISABLED, // rx Machine 55 AD_RX_LACP_DISABLED, // rx Machine 56 AD_RX_EXPIRED, // rx Machine 57 AD_RX_DEFAULTED, // rx Machine 58 AD_RX_CURRENT // rx Machine 59} rx_states_t; 60 61// periodic machine states(43.4.12 in the 802.3ad standard) 62typedef enum { 63 AD_PERIODIC_DUMMY, 64 AD_NO_PERIODIC, // periodic machine 65 AD_FAST_PERIODIC, // periodic machine 66 AD_SLOW_PERIODIC, // periodic machine 67 AD_PERIODIC_TX // periodic machine 68} periodic_states_t; 69 70// mux machine states(43.4.13 in the 802.3ad standard) 71typedef enum { 72 AD_MUX_DUMMY, 73 AD_MUX_DETACHED, // mux machine 74 AD_MUX_WAITING, // mux machine 75 AD_MUX_ATTACHED, // mux machine 76 AD_MUX_COLLECTING_DISTRIBUTING // mux machine 77} mux_states_t; 78 79// tx machine states(43.4.15 in the 802.3ad standard) 80typedef enum { 81 AD_TX_DUMMY, 82 AD_TRANSMIT // tx Machine 83} tx_states_t; 84 85// rx indication types 86typedef enum { 87 AD_TYPE_LACPDU = 1, // type lacpdu 88 AD_TYPE_MARKER // type marker 89} pdu_type_t; 90 91// rx marker indication types 92typedef enum { 93 AD_MARKER_INFORMATION_SUBTYPE = 1, // marker imformation subtype 94 AD_MARKER_RESPONSE_SUBTYPE // marker response subtype 95} marker_subtype_t; 96 97// timers types(43.4.9 in the 802.3ad standard) 98typedef enum { 99 AD_CURRENT_WHILE_TIMER, 100 AD_ACTOR_CHURN_TIMER, 101 AD_PERIODIC_TIMER, 102 AD_PARTNER_CHURN_TIMER, 103 AD_WAIT_WHILE_TIMER 104} ad_timers_t; 105 106#pragma pack(1) 107 108typedef struct ad_header { 109 struct mac_addr destination_address; 110 struct mac_addr source_address; 111 u16 length_type; 112} ad_header_t; 113 114// Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) 115typedef struct lacpdu { 116 u8 subtype; // = LACP(= 0x01) 117 u8 version_number; 118 u8 tlv_type_actor_info; // = actor information(type/length/value) 119 u8 actor_information_length; // = 20 120 u16 actor_system_priority; 121 struct mac_addr actor_system; 122 u16 actor_key; 123 u16 actor_port_priority; 124 u16 actor_port; 125 u8 actor_state; 126 u8 reserved_3_1[3]; // = 0 127 u8 tlv_type_partner_info; // = partner information 128 u8 partner_information_length; // = 20 129 u16 partner_system_priority; 130 struct mac_addr partner_system; 131 u16 partner_key; 132 u16 partner_port_priority; 133 u16 partner_port; 134 u8 partner_state; 135 u8 reserved_3_2[3]; // = 0 136 u8 tlv_type_collector_info; // = collector information 137 u8 collector_information_length; // = 16 138 u16 collector_max_delay; 139 u8 reserved_12[12]; 140 u8 tlv_type_terminator; // = terminator 141 u8 terminator_length; // = 0 142 u8 reserved_50[50]; // = 0 143} lacpdu_t; 144 145typedef struct lacpdu_header { 146 struct ad_header ad_header; 147 struct lacpdu lacpdu; 148} lacpdu_header_t; 149 150// Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) 151typedef struct marker { 152 u8 subtype; // = 0x02 (marker PDU) 153 u8 version_number; // = 0x01 154 u8 tlv_type; // = 0x01 (marker information) 155 // = 0x02 (marker response information) 156 u8 marker_length; // = 0x16 157 u16 requester_port; // The number assigned to the port by the requester 158 struct mac_addr requester_system; // The requester's system id 159 u32 requester_transaction_id; // The transaction id allocated by the requester, 160 u16 pad; // = 0 161 u8 tlv_type_terminator; // = 0x00 162 u8 terminator_length; // = 0x00 163 u8 reserved_90[90]; // = 0 164} marker_t; 165 166typedef struct marker_header { 167 struct ad_header ad_header; 168 struct marker marker; 169} marker_header_t; 170 171#pragma pack() 172 173struct slave; 174struct bonding; 175struct ad_info; 176struct port; 177 178#ifdef __ia64__ 179#pragma pack(8) 180#endif 181 182// aggregator structure(43.4.5 in the 802.3ad standard) 183typedef struct aggregator { 184 struct mac_addr aggregator_mac_address; 185 u16 aggregator_identifier; 186 u16 is_individual; // BOOLEAN 187 u16 actor_admin_aggregator_key; 188 u16 actor_oper_aggregator_key; 189 struct mac_addr partner_system; 190 u16 partner_system_priority; 191 u16 partner_oper_aggregator_key; 192 u16 receive_state; // BOOLEAN 193 u16 transmit_state; // BOOLEAN 194 struct port *lag_ports; 195 // ****** PRIVATE PARAMETERS ****** 196 struct slave *slave; // pointer to the bond slave that this aggregator belongs to 197 u16 is_active; // BOOLEAN. Indicates if this aggregator is active 198 u16 num_of_ports; 199} aggregator_t; 200 201// port structure(43.4.6 in the 802.3ad standard) 202typedef struct port { 203 u16 actor_port_number; 204 u16 actor_port_priority; 205 struct mac_addr actor_system; // This parameter is added here although it is not specified in the standard, just for simplification 206 u16 actor_system_priority; // This parameter is added here although it is not specified in the standard, just for simplification 207 u16 actor_port_aggregator_identifier; 208 u16 ntt; // BOOLEAN 209 u16 actor_admin_port_key; 210 u16 actor_oper_port_key; 211 u8 actor_admin_port_state; 212 u8 actor_oper_port_state; 213 struct mac_addr partner_admin_system; 214 struct mac_addr partner_oper_system; 215 u16 partner_admin_system_priority; 216 u16 partner_oper_system_priority; 217 u16 partner_admin_key; 218 u16 partner_oper_key; 219 u16 partner_admin_port_number; 220 u16 partner_oper_port_number; 221 u16 partner_admin_port_priority; 222 u16 partner_oper_port_priority; 223 u8 partner_admin_port_state; 224 u8 partner_oper_port_state; 225 u16 is_enabled; // BOOLEAN 226 // ****** PRIVATE PARAMETERS ****** 227 u16 sm_vars; // all state machines variables for this port 228 rx_states_t sm_rx_state; // state machine rx state 229 u16 sm_rx_timer_counter; // state machine rx timer counter 230 periodic_states_t sm_periodic_state;// state machine periodic state 231 u16 sm_periodic_timer_counter; // state machine periodic timer counter 232 mux_states_t sm_mux_state; // state machine mux state 233 u16 sm_mux_timer_counter; // state machine mux timer counter 234 tx_states_t sm_tx_state; // state machine tx state 235 u16 sm_tx_timer_counter; // state machine tx timer counter(allways on - enter to transmit state 3 time per second) 236 struct slave *slave; // pointer to the bond slave that this port belongs to 237 struct aggregator *aggregator; // pointer to an aggregator that this port related to 238 struct port *next_port_in_aggregator; // Next port on the linked list of the parent aggregator 239 u32 transaction_id; // continuous number for identification of Marker PDU's; 240 struct lacpdu lacpdu; // the lacpdu that will be sent for this port 241} port_t; 242 243// system structure 244typedef struct ad_system { 245 u16 sys_priority; 246 struct mac_addr sys_mac_addr; 247} ad_system_t; 248 249#ifdef __ia64__ 250#pragma pack() 251#endif 252 253// ================= AD Exported structures to the main bonding code ================== 254#define BOND_AD_INFO(bond) ((bond)->ad_info) 255#define SLAVE_AD_INFO(slave) ((slave)->ad_info) 256 257struct ad_bond_info { 258 ad_system_t system; // 802.3ad system structure 259 u32 agg_select_timer; // Timer to select aggregator after all adapter's hand shakes 260 u32 agg_select_mode; // Mode of selection of active aggregator(bandwidth/count) 261 int lacp_fast; /* whether fast periodic tx should be 262 * requested 263 */ 264 struct timer_list ad_timer; 265 struct packet_type ad_pkt_type; 266}; 267 268struct ad_slave_info { 269 struct aggregator aggregator; // 802.3ad aggregator structure 270 struct port port; // 802.3ad port structure 271 spinlock_t rx_machine_lock; // To avoid race condition between callback and receive interrupt 272 u16 id; 273}; 274 275// ================= AD Exported functions to the main bonding code ================== 276void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution, int lacp_fast); 277int bond_3ad_bind_slave(struct slave *slave); 278void bond_3ad_unbind_slave(struct slave *slave); 279void bond_3ad_state_machine_handler(struct bonding *bond); 280void bond_3ad_adapter_speed_changed(struct slave *slave); 281void bond_3ad_adapter_duplex_changed(struct slave *slave); 282void bond_3ad_handle_link_change(struct slave *slave, char link); 283int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info); 284int bond_3ad_xmit_xor(struct sk_buff *skb, struct net_device *dev); 285int bond_3ad_lacpdu_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type* ptype, struct net_device *orig_dev); 286int bond_3ad_set_carrier(struct bonding *bond); 287#endif //__BOND_3AD_H__ 288