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 _NET_BOND_3AD_H 24 #define _NET_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 /* churn machine states(43.4.17 in the 802.3ad standard) */ 86 typedef enum { 87 AD_CHURN_MONITOR, /* monitoring for churn */ 88 AD_CHURN, /* churn detected (error) */ 89 AD_NO_CHURN /* no churn (no error) */ 90 } churn_state_t; 91 92 /* rx indication types */ 93 typedef enum { 94 AD_TYPE_LACPDU = 1, /* type lacpdu */ 95 AD_TYPE_MARKER /* type marker */ 96 } pdu_type_t; 97 98 /* rx marker indication types */ 99 typedef enum { 100 AD_MARKER_INFORMATION_SUBTYPE = 1, /* marker imformation subtype */ 101 AD_MARKER_RESPONSE_SUBTYPE /* marker response subtype */ 102 } bond_marker_subtype_t; 103 104 /* timers types(43.4.9 in the 802.3ad standard) */ 105 typedef enum { 106 AD_CURRENT_WHILE_TIMER, 107 AD_ACTOR_CHURN_TIMER, 108 AD_PERIODIC_TIMER, 109 AD_PARTNER_CHURN_TIMER, 110 AD_WAIT_WHILE_TIMER 111 } ad_timers_t; 112 113 #pragma pack(1) 114 115 /* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */ 116 typedef struct lacpdu { 117 u8 subtype; /* = LACP(= 0x01) */ 118 u8 version_number; 119 u8 tlv_type_actor_info; /* = actor information(type/length/value) */ 120 u8 actor_information_length; /* = 20 */ 121 __be16 actor_system_priority; 122 struct mac_addr actor_system; 123 __be16 actor_key; 124 __be16 actor_port_priority; 125 __be16 actor_port; 126 u8 actor_state; 127 u8 reserved_3_1[3]; /* = 0 */ 128 u8 tlv_type_partner_info; /* = partner information */ 129 u8 partner_information_length; /* = 20 */ 130 __be16 partner_system_priority; 131 struct mac_addr partner_system; 132 __be16 partner_key; 133 __be16 partner_port_priority; 134 __be16 partner_port; 135 u8 partner_state; 136 u8 reserved_3_2[3]; /* = 0 */ 137 u8 tlv_type_collector_info; /* = collector information */ 138 u8 collector_information_length;/* = 16 */ 139 __be16 collector_max_delay; 140 u8 reserved_12[12]; 141 u8 tlv_type_terminator; /* = terminator */ 142 u8 terminator_length; /* = 0 */ 143 u8 reserved_50[50]; /* = 0 */ 144 } __packed lacpdu_t; 145 146 typedef struct lacpdu_header { 147 struct ethhdr hdr; 148 struct lacpdu lacpdu; 149 } __packed lacpdu_header_t; 150 151 /* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */ 152 typedef struct bond_marker { 153 u8 subtype; /* = 0x02 (marker PDU) */ 154 u8 version_number; /* = 0x01 */ 155 u8 tlv_type; /* = 0x01 (marker information) */ 156 /* = 0x02 (marker response information) */ 157 u8 marker_length; /* = 0x16 */ 158 u16 requester_port; /* The number assigned to the port by the requester */ 159 struct mac_addr requester_system; /* The requester's system id */ 160 u32 requester_transaction_id; /* The transaction id allocated by the requester, */ 161 u16 pad; /* = 0 */ 162 u8 tlv_type_terminator; /* = 0x00 */ 163 u8 terminator_length; /* = 0x00 */ 164 u8 reserved_90[90]; /* = 0 */ 165 } __packed bond_marker_t; 166 167 typedef struct bond_marker_header { 168 struct ethhdr hdr; 169 struct bond_marker marker; 170 } __packed bond_marker_header_t; 171 172 #pragma pack() 173 174 struct slave; 175 struct bonding; 176 struct ad_info; 177 struct port; 178 179 #ifdef __ia64__ 180 #pragma pack(8) 181 #endif 182 183 /* aggregator structure(43.4.5 in the 802.3ad standard) */ 184 typedef struct aggregator { 185 struct mac_addr aggregator_mac_address; 186 u16 aggregator_identifier; 187 bool is_individual; 188 u16 actor_admin_aggregator_key; 189 u16 actor_oper_aggregator_key; 190 struct mac_addr partner_system; 191 u16 partner_system_priority; 192 u16 partner_oper_aggregator_key; 193 u16 receive_state; /* BOOLEAN */ 194 u16 transmit_state; /* BOOLEAN */ 195 struct port *lag_ports; 196 /* ****** PRIVATE PARAMETERS ****** */ 197 struct slave *slave; /* pointer to the bond slave that this aggregator belongs to */ 198 u16 is_active; /* BOOLEAN. Indicates if this aggregator is active */ 199 u16 num_of_ports; 200 } aggregator_t; 201 202 struct port_params { 203 struct mac_addr system; 204 u16 system_priority; 205 u16 key; 206 u16 port_number; 207 u16 port_priority; 208 u16 port_state; 209 }; 210 211 /* port structure(43.4.6 in the 802.3ad standard) */ 212 typedef struct port { 213 u16 actor_port_number; 214 u16 actor_port_priority; 215 struct mac_addr actor_system; /* This parameter is added here although it is not specified in the standard, just for simplification */ 216 u16 actor_system_priority; /* This parameter is added here although it is not specified in the standard, just for simplification */ 217 u16 actor_port_aggregator_identifier; 218 bool ntt; 219 u16 actor_admin_port_key; 220 u16 actor_oper_port_key; 221 u8 actor_admin_port_state; 222 u8 actor_oper_port_state; 223 224 struct port_params partner_admin; 225 struct port_params partner_oper; 226 227 bool is_enabled; 228 229 /* ****** PRIVATE PARAMETERS ****** */ 230 u16 sm_vars; /* all state machines variables for this port */ 231 rx_states_t sm_rx_state; /* state machine rx state */ 232 u16 sm_rx_timer_counter; /* state machine rx timer counter */ 233 periodic_states_t sm_periodic_state; /* state machine periodic state */ 234 u16 sm_periodic_timer_counter; /* state machine periodic timer counter */ 235 mux_states_t sm_mux_state; /* state machine mux state */ 236 u16 sm_mux_timer_counter; /* state machine mux timer counter */ 237 tx_states_t sm_tx_state; /* state machine tx state */ 238 u16 sm_tx_timer_counter; /* state machine tx timer counter(allways on - enter to transmit state 3 time per second) */ 239 u16 sm_churn_actor_timer_counter; 240 u16 sm_churn_partner_timer_counter; 241 u32 churn_actor_count; 242 u32 churn_partner_count; 243 churn_state_t sm_churn_actor_state; 244 churn_state_t sm_churn_partner_state; 245 struct slave *slave; /* pointer to the bond slave that this port belongs to */ 246 struct aggregator *aggregator; /* pointer to an aggregator that this port related to */ 247 struct port *next_port_in_aggregator; /* Next port on the linked list of the parent aggregator */ 248 u32 transaction_id; /* continuous number for identification of Marker PDU's; */ 249 struct lacpdu lacpdu; /* the lacpdu that will be sent for this port */ 250 } port_t; 251 252 /* system structure */ 253 struct ad_system { 254 u16 sys_priority; 255 struct mac_addr sys_mac_addr; 256 }; 257 258 #ifdef __ia64__ 259 #pragma pack() 260 #endif 261 262 /* ========== AD Exported structures to the main bonding code ========== */ 263 #define BOND_AD_INFO(bond) ((bond)->ad_info) 264 #define SLAVE_AD_INFO(slave) ((slave)->ad_info) 265 266 struct ad_bond_info { 267 struct ad_system system; /* 802.3ad system structure */ 268 u32 agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */ 269 u16 aggregator_identifier; 270 }; 271 272 struct ad_slave_info { 273 struct aggregator aggregator; /* 802.3ad aggregator structure */ 274 struct port port; /* 802.3ad port structure */ 275 u16 id; 276 }; 277 278 static inline const char *bond_3ad_churn_desc(churn_state_t state) 279 { 280 static const char *const churn_description[] = { 281 "monitoring", 282 "churned", 283 "none", 284 "unknown" 285 }; 286 int max_size = sizeof(churn_description) / sizeof(churn_description[0]); 287 288 if (state >= max_size) 289 state = max_size - 1; 290 291 return churn_description[state]; 292 } 293 294 /* ========== AD Exported functions to the main bonding code ========== */ 295 void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution); 296 void bond_3ad_bind_slave(struct slave *slave); 297 void bond_3ad_unbind_slave(struct slave *slave); 298 void bond_3ad_state_machine_handler(struct work_struct *); 299 void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout); 300 void bond_3ad_adapter_speed_changed(struct slave *slave); 301 void bond_3ad_adapter_duplex_changed(struct slave *slave); 302 void bond_3ad_handle_link_change(struct slave *slave, char link); 303 int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info); 304 int __bond_3ad_get_active_agg_info(struct bonding *bond, 305 struct ad_info *ad_info); 306 int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond, 307 struct slave *slave); 308 int bond_3ad_set_carrier(struct bonding *bond); 309 void bond_3ad_update_lacp_rate(struct bonding *bond); 310 #endif /* _NET_BOND_3AD_H */ 311 312