1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved. 4 */ 5 6 #ifndef _NET_BOND_3AD_H 7 #define _NET_BOND_3AD_H 8 9 #include <asm/byteorder.h> 10 #include <linux/skbuff.h> 11 #include <linux/netdevice.h> 12 #include <linux/if_ether.h> 13 14 /* General definitions */ 15 #define PKT_TYPE_LACPDU cpu_to_be16(ETH_P_SLOW) 16 #define AD_TIMER_INTERVAL 100 /*msec*/ 17 18 #define MULTICAST_LACPDU_ADDR {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02} 19 20 #define AD_LACP_SLOW 0 21 #define AD_LACP_FAST 1 22 23 typedef struct mac_addr { 24 u8 mac_addr_value[ETH_ALEN]; 25 } __packed mac_addr_t; 26 27 enum { 28 BOND_AD_STABLE = 0, 29 BOND_AD_BANDWIDTH = 1, 30 BOND_AD_COUNT = 2, 31 }; 32 33 /* rx machine states(43.4.11 in the 802.3ad standard) */ 34 typedef enum { 35 AD_RX_DUMMY, 36 AD_RX_INITIALIZE, /* rx Machine */ 37 AD_RX_PORT_DISABLED, /* rx Machine */ 38 AD_RX_LACP_DISABLED, /* rx Machine */ 39 AD_RX_EXPIRED, /* rx Machine */ 40 AD_RX_DEFAULTED, /* rx Machine */ 41 AD_RX_CURRENT /* rx Machine */ 42 } rx_states_t; 43 44 /* periodic machine states(43.4.12 in the 802.3ad standard) */ 45 typedef enum { 46 AD_PERIODIC_DUMMY, 47 AD_NO_PERIODIC, /* periodic machine */ 48 AD_FAST_PERIODIC, /* periodic machine */ 49 AD_SLOW_PERIODIC, /* periodic machine */ 50 AD_PERIODIC_TX /* periodic machine */ 51 } periodic_states_t; 52 53 /* mux machine states(43.4.13 in the 802.3ad standard) */ 54 typedef enum { 55 AD_MUX_DUMMY, 56 AD_MUX_DETACHED, /* mux machine */ 57 AD_MUX_WAITING, /* mux machine */ 58 AD_MUX_ATTACHED, /* mux machine */ 59 AD_MUX_COLLECTING_DISTRIBUTING /* mux machine */ 60 } mux_states_t; 61 62 /* tx machine states(43.4.15 in the 802.3ad standard) */ 63 typedef enum { 64 AD_TX_DUMMY, 65 AD_TRANSMIT /* tx Machine */ 66 } tx_states_t; 67 68 /* churn machine states(43.4.17 in the 802.3ad standard) */ 69 typedef enum { 70 AD_CHURN_MONITOR, /* monitoring for churn */ 71 AD_CHURN, /* churn detected (error) */ 72 AD_NO_CHURN /* no churn (no error) */ 73 } churn_state_t; 74 75 /* rx indication types */ 76 typedef enum { 77 AD_TYPE_LACPDU = 1, /* type lacpdu */ 78 AD_TYPE_MARKER /* type marker */ 79 } pdu_type_t; 80 81 /* rx marker indication types */ 82 typedef enum { 83 AD_MARKER_INFORMATION_SUBTYPE = 1, /* marker imformation subtype */ 84 AD_MARKER_RESPONSE_SUBTYPE /* marker response subtype */ 85 } bond_marker_subtype_t; 86 87 /* timers types(43.4.9 in the 802.3ad standard) */ 88 typedef enum { 89 AD_CURRENT_WHILE_TIMER, 90 AD_ACTOR_CHURN_TIMER, 91 AD_PERIODIC_TIMER, 92 AD_PARTNER_CHURN_TIMER, 93 AD_WAIT_WHILE_TIMER 94 } ad_timers_t; 95 96 #pragma pack(1) 97 98 /* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */ 99 typedef struct lacpdu { 100 u8 subtype; /* = LACP(= 0x01) */ 101 u8 version_number; 102 u8 tlv_type_actor_info; /* = actor information(type/length/value) */ 103 u8 actor_information_length; /* = 20 */ 104 __be16 actor_system_priority; 105 struct mac_addr actor_system; 106 __be16 actor_key; 107 __be16 actor_port_priority; 108 __be16 actor_port; 109 u8 actor_state; 110 u8 reserved_3_1[3]; /* = 0 */ 111 u8 tlv_type_partner_info; /* = partner information */ 112 u8 partner_information_length; /* = 20 */ 113 __be16 partner_system_priority; 114 struct mac_addr partner_system; 115 __be16 partner_key; 116 __be16 partner_port_priority; 117 __be16 partner_port; 118 u8 partner_state; 119 u8 reserved_3_2[3]; /* = 0 */ 120 u8 tlv_type_collector_info; /* = collector information */ 121 u8 collector_information_length;/* = 16 */ 122 __be16 collector_max_delay; 123 u8 reserved_12[12]; 124 u8 tlv_type_terminator; /* = terminator */ 125 u8 terminator_length; /* = 0 */ 126 u8 reserved_50[50]; /* = 0 */ 127 } __packed lacpdu_t; 128 129 typedef struct lacpdu_header { 130 struct ethhdr hdr; 131 struct lacpdu lacpdu; 132 } __packed lacpdu_header_t; 133 134 /* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */ 135 typedef struct bond_marker { 136 u8 subtype; /* = 0x02 (marker PDU) */ 137 u8 version_number; /* = 0x01 */ 138 u8 tlv_type; /* = 0x01 (marker information) */ 139 /* = 0x02 (marker response information) */ 140 u8 marker_length; /* = 0x16 */ 141 u16 requester_port; /* The number assigned to the port by the requester */ 142 struct mac_addr requester_system; /* The requester's system id */ 143 u32 requester_transaction_id; /* The transaction id allocated by the requester, */ 144 u16 pad; /* = 0 */ 145 u8 tlv_type_terminator; /* = 0x00 */ 146 u8 terminator_length; /* = 0x00 */ 147 u8 reserved_90[90]; /* = 0 */ 148 } __packed bond_marker_t; 149 150 typedef struct bond_marker_header { 151 struct ethhdr hdr; 152 struct bond_marker marker; 153 } __packed bond_marker_header_t; 154 155 #pragma pack() 156 157 struct slave; 158 struct bonding; 159 struct ad_info; 160 struct port; 161 162 #ifdef __ia64__ 163 #pragma pack(8) 164 #endif 165 166 struct bond_3ad_stats { 167 atomic64_t lacpdu_rx; 168 atomic64_t lacpdu_tx; 169 atomic64_t lacpdu_unknown_rx; 170 atomic64_t lacpdu_illegal_rx; 171 172 atomic64_t marker_rx; 173 atomic64_t marker_tx; 174 atomic64_t marker_resp_rx; 175 atomic64_t marker_resp_tx; 176 atomic64_t marker_unknown_rx; 177 }; 178 179 /* aggregator structure(43.4.5 in the 802.3ad standard) */ 180 typedef struct aggregator { 181 struct mac_addr aggregator_mac_address; 182 u16 aggregator_identifier; 183 bool is_individual; 184 u16 actor_admin_aggregator_key; 185 u16 actor_oper_aggregator_key; 186 struct mac_addr partner_system; 187 u16 partner_system_priority; 188 u16 partner_oper_aggregator_key; 189 u16 receive_state; /* BOOLEAN */ 190 u16 transmit_state; /* BOOLEAN */ 191 struct port *lag_ports; 192 /* ****** PRIVATE PARAMETERS ****** */ 193 struct slave *slave; /* pointer to the bond slave that this aggregator belongs to */ 194 u16 is_active; /* BOOLEAN. Indicates if this aggregator is active */ 195 u16 num_of_ports; 196 } aggregator_t; 197 198 struct port_params { 199 struct mac_addr system; 200 u16 system_priority; 201 u16 key; 202 u16 port_number; 203 u16 port_priority; 204 u16 port_state; 205 }; 206 207 /* port structure(43.4.6 in the 802.3ad standard) */ 208 typedef struct port { 209 u16 actor_port_number; 210 u16 actor_port_priority; 211 struct mac_addr actor_system; /* This parameter is added here although it is not specified in the standard, just for simplification */ 212 u16 actor_system_priority; /* This parameter is added here although it is not specified in the standard, just for simplification */ 213 u16 actor_port_aggregator_identifier; 214 bool ntt; 215 u16 actor_admin_port_key; 216 u16 actor_oper_port_key; 217 u8 actor_admin_port_state; 218 u8 actor_oper_port_state; 219 220 struct port_params partner_admin; 221 struct port_params partner_oper; 222 223 bool is_enabled; 224 225 /* ****** PRIVATE PARAMETERS ****** */ 226 u16 sm_vars; /* all state machines variables for this port */ 227 rx_states_t sm_rx_state; /* state machine rx state */ 228 u16 sm_rx_timer_counter; /* state machine rx timer counter */ 229 periodic_states_t sm_periodic_state; /* state machine periodic state */ 230 u16 sm_periodic_timer_counter; /* state machine periodic timer counter */ 231 mux_states_t sm_mux_state; /* state machine mux state */ 232 u16 sm_mux_timer_counter; /* state machine mux timer counter */ 233 tx_states_t sm_tx_state; /* state machine tx state */ 234 u16 sm_tx_timer_counter; /* state machine tx timer counter(allways on - enter to transmit state 3 time per second) */ 235 u16 sm_churn_actor_timer_counter; 236 u16 sm_churn_partner_timer_counter; 237 u32 churn_actor_count; 238 u32 churn_partner_count; 239 churn_state_t sm_churn_actor_state; 240 churn_state_t sm_churn_partner_state; 241 struct slave *slave; /* pointer to the bond slave that this port belongs to */ 242 struct aggregator *aggregator; /* pointer to an aggregator that this port related to */ 243 struct port *next_port_in_aggregator; /* Next port on the linked list of the parent aggregator */ 244 u32 transaction_id; /* continuous number for identification of Marker PDU's; */ 245 struct lacpdu lacpdu; /* the lacpdu that will be sent for this port */ 246 } port_t; 247 248 /* system structure */ 249 struct ad_system { 250 u16 sys_priority; 251 struct mac_addr sys_mac_addr; 252 }; 253 254 #ifdef __ia64__ 255 #pragma pack() 256 #endif 257 258 /* ========== AD Exported structures to the main bonding code ========== */ 259 #define BOND_AD_INFO(bond) ((bond)->ad_info) 260 #define SLAVE_AD_INFO(slave) ((slave)->ad_info) 261 262 struct ad_bond_info { 263 struct ad_system system; /* 802.3ad system structure */ 264 struct bond_3ad_stats stats; 265 u32 agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */ 266 u16 aggregator_identifier; 267 }; 268 269 struct ad_slave_info { 270 struct aggregator aggregator; /* 802.3ad aggregator structure */ 271 struct port port; /* 802.3ad port structure */ 272 struct bond_3ad_stats stats; 273 u16 id; 274 }; 275 276 static inline const char *bond_3ad_churn_desc(churn_state_t state) 277 { 278 static const char *const churn_description[] = { 279 "monitoring", 280 "churned", 281 "none", 282 "unknown" 283 }; 284 int max_size = ARRAY_SIZE(churn_description); 285 286 if (state >= max_size) 287 state = max_size - 1; 288 289 return churn_description[state]; 290 } 291 292 /* ========== AD Exported functions to the main bonding code ========== */ 293 void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution); 294 void bond_3ad_bind_slave(struct slave *slave); 295 void bond_3ad_unbind_slave(struct slave *slave); 296 void bond_3ad_state_machine_handler(struct work_struct *); 297 void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout); 298 void bond_3ad_adapter_speed_duplex_changed(struct slave *slave); 299 void bond_3ad_handle_link_change(struct slave *slave, char link); 300 int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info); 301 int __bond_3ad_get_active_agg_info(struct bonding *bond, 302 struct ad_info *ad_info); 303 int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond, 304 struct slave *slave); 305 int bond_3ad_set_carrier(struct bonding *bond); 306 void bond_3ad_update_lacp_rate(struct bonding *bond); 307 void bond_3ad_update_ad_actor_settings(struct bonding *bond); 308 int bond_3ad_stats_fill(struct sk_buff *skb, struct bond_3ad_stats *stats); 309 size_t bond_3ad_stats_size(void); 310 #endif /* _NET_BOND_3AD_H */ 311 312