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 #include <linux/if_ether.h> 30 31 // General definitions 32 #define PKT_TYPE_LACPDU cpu_to_be16(ETH_P_SLOW) 33 #define AD_TIMER_INTERVAL 100 /*msec*/ 34 35 #define MULTICAST_LACPDU_ADDR {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02} 36 37 #define AD_LACP_SLOW 0 38 #define AD_LACP_FAST 1 39 40 typedef struct mac_addr { 41 u8 mac_addr_value[ETH_ALEN]; 42 } __packed mac_addr_t; 43 44 enum { 45 BOND_AD_STABLE = 0, 46 BOND_AD_BANDWIDTH = 1, 47 BOND_AD_COUNT = 2, 48 }; 49 50 // rx machine states(43.4.11 in the 802.3ad standard) 51 typedef 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) 62 typedef 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) 71 typedef 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) 80 typedef enum { 81 AD_TX_DUMMY, 82 AD_TRANSMIT // tx Machine 83 } tx_states_t; 84 85 // rx indication types 86 typedef enum { 87 AD_TYPE_LACPDU = 1, // type lacpdu 88 AD_TYPE_MARKER // type marker 89 } pdu_type_t; 90 91 // rx marker indication types 92 typedef enum { 93 AD_MARKER_INFORMATION_SUBTYPE = 1, // marker imformation subtype 94 AD_MARKER_RESPONSE_SUBTYPE // marker response subtype 95 } bond_marker_subtype_t; 96 97 // timers types(43.4.9 in the 802.3ad standard) 98 typedef 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) 107 108 // Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) 109 typedef struct lacpdu { 110 u8 subtype; // = LACP(= 0x01) 111 u8 version_number; 112 u8 tlv_type_actor_info; // = actor information(type/length/value) 113 u8 actor_information_length; // = 20 114 __be16 actor_system_priority; 115 struct mac_addr actor_system; 116 __be16 actor_key; 117 __be16 actor_port_priority; 118 __be16 actor_port; 119 u8 actor_state; 120 u8 reserved_3_1[3]; // = 0 121 u8 tlv_type_partner_info; // = partner information 122 u8 partner_information_length; // = 20 123 __be16 partner_system_priority; 124 struct mac_addr partner_system; 125 __be16 partner_key; 126 __be16 partner_port_priority; 127 __be16 partner_port; 128 u8 partner_state; 129 u8 reserved_3_2[3]; // = 0 130 u8 tlv_type_collector_info; // = collector information 131 u8 collector_information_length; // = 16 132 __be16 collector_max_delay; 133 u8 reserved_12[12]; 134 u8 tlv_type_terminator; // = terminator 135 u8 terminator_length; // = 0 136 u8 reserved_50[50]; // = 0 137 } __packed lacpdu_t; 138 139 typedef struct lacpdu_header { 140 struct ethhdr hdr; 141 struct lacpdu lacpdu; 142 } __packed lacpdu_header_t; 143 144 // Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) 145 typedef struct bond_marker { 146 u8 subtype; // = 0x02 (marker PDU) 147 u8 version_number; // = 0x01 148 u8 tlv_type; // = 0x01 (marker information) 149 // = 0x02 (marker response information) 150 u8 marker_length; // = 0x16 151 u16 requester_port; // The number assigned to the port by the requester 152 struct mac_addr requester_system; // The requester's system id 153 u32 requester_transaction_id; // The transaction id allocated by the requester, 154 u16 pad; // = 0 155 u8 tlv_type_terminator; // = 0x00 156 u8 terminator_length; // = 0x00 157 u8 reserved_90[90]; // = 0 158 } __packed bond_marker_t; 159 160 typedef struct bond_marker_header { 161 struct ethhdr hdr; 162 struct bond_marker marker; 163 } __packed bond_marker_header_t; 164 165 #pragma pack() 166 167 struct slave; 168 struct bonding; 169 struct ad_info; 170 struct port; 171 172 #ifdef __ia64__ 173 #pragma pack(8) 174 #endif 175 176 // aggregator structure(43.4.5 in the 802.3ad standard) 177 typedef struct aggregator { 178 struct mac_addr aggregator_mac_address; 179 u16 aggregator_identifier; 180 bool is_individual; 181 u16 actor_admin_aggregator_key; 182 u16 actor_oper_aggregator_key; 183 struct mac_addr partner_system; 184 u16 partner_system_priority; 185 u16 partner_oper_aggregator_key; 186 u16 receive_state; // BOOLEAN 187 u16 transmit_state; // BOOLEAN 188 struct port *lag_ports; 189 // ****** PRIVATE PARAMETERS ****** 190 struct slave *slave; // pointer to the bond slave that this aggregator belongs to 191 u16 is_active; // BOOLEAN. Indicates if this aggregator is active 192 u16 num_of_ports; 193 } aggregator_t; 194 195 struct port_params { 196 struct mac_addr system; 197 u16 system_priority; 198 u16 key; 199 u16 port_number; 200 u16 port_priority; 201 u16 port_state; 202 }; 203 204 // port structure(43.4.6 in the 802.3ad standard) 205 typedef struct port { 206 u16 actor_port_number; 207 u16 actor_port_priority; 208 struct mac_addr actor_system; // This parameter is added here although it is not specified in the standard, just for simplification 209 u16 actor_system_priority; // This parameter is added here although it is not specified in the standard, just for simplification 210 u16 actor_port_aggregator_identifier; 211 bool ntt; 212 u16 actor_admin_port_key; 213 u16 actor_oper_port_key; 214 u8 actor_admin_port_state; 215 u8 actor_oper_port_state; 216 217 struct port_params partner_admin; 218 struct port_params partner_oper; 219 220 bool is_enabled; 221 222 // ****** PRIVATE PARAMETERS ****** 223 u16 sm_vars; // all state machines variables for this port 224 rx_states_t sm_rx_state; // state machine rx state 225 u16 sm_rx_timer_counter; // state machine rx timer counter 226 periodic_states_t sm_periodic_state;// state machine periodic state 227 u16 sm_periodic_timer_counter; // state machine periodic timer counter 228 mux_states_t sm_mux_state; // state machine mux state 229 u16 sm_mux_timer_counter; // state machine mux timer counter 230 tx_states_t sm_tx_state; // state machine tx state 231 u16 sm_tx_timer_counter; // state machine tx timer counter(allways on - enter to transmit state 3 time per second) 232 struct slave *slave; // pointer to the bond slave that this port belongs to 233 struct aggregator *aggregator; // pointer to an aggregator that this port related to 234 struct port *next_port_in_aggregator; // Next port on the linked list of the parent aggregator 235 u32 transaction_id; // continuous number for identification of Marker PDU's; 236 struct lacpdu lacpdu; // the lacpdu that will be sent for this port 237 } port_t; 238 239 // system structure 240 struct ad_system { 241 u16 sys_priority; 242 struct mac_addr sys_mac_addr; 243 }; 244 245 #ifdef __ia64__ 246 #pragma pack() 247 #endif 248 249 // ================= AD Exported structures to the main bonding code ================== 250 #define BOND_AD_INFO(bond) ((bond)->ad_info) 251 #define SLAVE_AD_INFO(slave) ((slave)->ad_info) 252 253 struct ad_bond_info { 254 struct ad_system system; /* 802.3ad system structure */ 255 u32 agg_select_timer; // Timer to select aggregator after all adapter's hand shakes 256 u16 aggregator_identifier; 257 }; 258 259 struct ad_slave_info { 260 struct aggregator aggregator; // 802.3ad aggregator structure 261 struct port port; // 802.3ad port structure 262 spinlock_t state_machine_lock; /* mutex state machines vs. 263 incoming LACPDU */ 264 u16 id; 265 }; 266 267 // ================= AD Exported functions to the main bonding code ================== 268 void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution); 269 int bond_3ad_bind_slave(struct slave *slave); 270 void bond_3ad_unbind_slave(struct slave *slave); 271 void bond_3ad_state_machine_handler(struct work_struct *); 272 void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout); 273 void bond_3ad_adapter_speed_changed(struct slave *slave); 274 void bond_3ad_adapter_duplex_changed(struct slave *slave); 275 void bond_3ad_handle_link_change(struct slave *slave, char link); 276 int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info); 277 int bond_3ad_xmit_xor(struct sk_buff *skb, struct net_device *dev); 278 int bond_3ad_lacpdu_recv(struct sk_buff *skb, struct bonding *bond, 279 struct slave *slave); 280 int bond_3ad_set_carrier(struct bonding *bond); 281 void bond_3ad_update_lacp_rate(struct bonding *bond); 282 #endif //__BOND_3AD_H__ 283 284