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 AD_LACP_SLOW 0 19 #define AD_LACP_FAST 1 20 21 typedef struct mac_addr { 22 u8 mac_addr_value[ETH_ALEN]; 23 } __packed mac_addr_t; 24 25 enum { 26 BOND_AD_STABLE = 0, 27 BOND_AD_BANDWIDTH = 1, 28 BOND_AD_COUNT = 2, 29 BOND_AD_PRIO = 3, 30 }; 31 32 /* rx machine states(43.4.11 in the 802.3ad standard) */ 33 typedef enum { 34 AD_RX_DUMMY, 35 AD_RX_INITIALIZE, /* rx Machine */ 36 AD_RX_PORT_DISABLED, /* rx Machine */ 37 AD_RX_LACP_DISABLED, /* rx Machine */ 38 AD_RX_EXPIRED, /* rx Machine */ 39 AD_RX_DEFAULTED, /* rx Machine */ 40 AD_RX_CURRENT /* rx Machine */ 41 } rx_states_t; 42 43 /* periodic machine states(43.4.12 in the 802.3ad standard) */ 44 typedef enum { 45 AD_PERIODIC_DUMMY, 46 AD_NO_PERIODIC, /* periodic machine */ 47 AD_FAST_PERIODIC, /* periodic machine */ 48 AD_SLOW_PERIODIC, /* periodic machine */ 49 AD_PERIODIC_TX /* periodic machine */ 50 } periodic_states_t; 51 52 /* mux machine states(43.4.13 in the 802.3ad standard) */ 53 typedef enum { 54 AD_MUX_DUMMY, 55 AD_MUX_DETACHED, /* mux machine */ 56 AD_MUX_WAITING, /* mux machine */ 57 AD_MUX_ATTACHED, /* mux machine */ 58 AD_MUX_COLLECTING, /* mux machine */ 59 AD_MUX_DISTRIBUTING, /* mux machine */ 60 AD_MUX_COLLECTING_DISTRIBUTING /* mux machine */ 61 } mux_states_t; 62 63 /* churn machine states(43.4.17 in the 802.3ad standard) */ 64 typedef enum { 65 AD_CHURN_MONITOR, /* monitoring for churn */ 66 AD_CHURN, /* churn detected (error) */ 67 AD_NO_CHURN /* no churn (no error) */ 68 } churn_state_t; 69 70 /* rx indication types */ 71 typedef enum { 72 AD_TYPE_LACPDU = 1, /* type lacpdu */ 73 AD_TYPE_MARKER /* type marker */ 74 } pdu_type_t; 75 76 /* rx marker indication types */ 77 typedef enum { 78 AD_MARKER_INFORMATION_SUBTYPE = 1, /* marker imformation subtype */ 79 AD_MARKER_RESPONSE_SUBTYPE /* marker response subtype */ 80 } bond_marker_subtype_t; 81 82 /* timers types(43.4.9 in the 802.3ad standard) */ 83 typedef enum { 84 AD_CURRENT_WHILE_TIMER, 85 AD_ACTOR_CHURN_TIMER, 86 AD_PERIODIC_TIMER, 87 AD_PARTNER_CHURN_TIMER, 88 AD_WAIT_WHILE_TIMER 89 } ad_timers_t; 90 91 #pragma pack(1) 92 93 /* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */ 94 typedef struct lacpdu { 95 u8 subtype; /* = LACP(= 0x01) */ 96 u8 version_number; 97 u8 tlv_type_actor_info; /* = actor information(type/length/value) */ 98 u8 actor_information_length; /* = 20 */ 99 __be16 actor_system_priority; 100 struct mac_addr actor_system; 101 __be16 actor_key; 102 __be16 actor_port_priority; 103 __be16 actor_port; 104 u8 actor_state; 105 u8 reserved_3_1[3]; /* = 0 */ 106 u8 tlv_type_partner_info; /* = partner information */ 107 u8 partner_information_length; /* = 20 */ 108 __be16 partner_system_priority; 109 struct mac_addr partner_system; 110 __be16 partner_key; 111 __be16 partner_port_priority; 112 __be16 partner_port; 113 u8 partner_state; 114 u8 reserved_3_2[3]; /* = 0 */ 115 u8 tlv_type_collector_info; /* = collector information */ 116 u8 collector_information_length;/* = 16 */ 117 __be16 collector_max_delay; 118 u8 reserved_12[12]; 119 u8 tlv_type_terminator; /* = terminator */ 120 u8 terminator_length; /* = 0 */ 121 u8 reserved_50[50]; /* = 0 */ 122 } __packed lacpdu_t; 123 124 typedef struct lacpdu_header { 125 struct ethhdr hdr; 126 struct lacpdu lacpdu; 127 } __packed lacpdu_header_t; 128 129 /* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */ 130 typedef struct bond_marker { 131 u8 subtype; /* = 0x02 (marker PDU) */ 132 u8 version_number; /* = 0x01 */ 133 u8 tlv_type; /* = 0x01 (marker information) */ 134 /* = 0x02 (marker response information) */ 135 u8 marker_length; /* = 0x16 */ 136 u16 requester_port; /* The number assigned to the port by the requester */ 137 struct mac_addr requester_system; /* The requester's system id */ 138 u32 requester_transaction_id; /* The transaction id allocated by the requester, */ 139 u16 pad; /* = 0 */ 140 u8 tlv_type_terminator; /* = 0x00 */ 141 u8 terminator_length; /* = 0x00 */ 142 u8 reserved_90[90]; /* = 0 */ 143 } __packed bond_marker_t; 144 145 typedef struct bond_marker_header { 146 struct ethhdr hdr; 147 struct bond_marker marker; 148 } __packed bond_marker_header_t; 149 150 #pragma pack() 151 152 struct slave; 153 struct bonding; 154 struct ad_info; 155 struct port; 156 157 #ifdef __ia64__ 158 #pragma pack(8) 159 #endif 160 161 struct bond_3ad_stats { 162 atomic64_t lacpdu_rx; 163 atomic64_t lacpdu_tx; 164 atomic64_t lacpdu_unknown_rx; 165 atomic64_t lacpdu_illegal_rx; 166 167 atomic64_t marker_rx; 168 atomic64_t marker_tx; 169 atomic64_t marker_resp_rx; 170 atomic64_t marker_resp_tx; 171 atomic64_t marker_unknown_rx; 172 }; 173 174 /* aggregator structure(43.4.5 in the 802.3ad standard) */ 175 typedef struct aggregator { 176 struct mac_addr aggregator_mac_address; 177 u16 aggregator_identifier; 178 bool is_individual; 179 u16 actor_admin_aggregator_key; 180 u16 actor_oper_aggregator_key; 181 struct mac_addr partner_system; 182 u16 partner_system_priority; 183 u16 partner_oper_aggregator_key; 184 u16 receive_state; /* BOOLEAN */ 185 u16 transmit_state; /* BOOLEAN */ 186 struct port *lag_ports; 187 /* ****** PRIVATE PARAMETERS ****** */ 188 struct slave *slave; /* pointer to the bond slave that this aggregator belongs to */ 189 u16 is_active; /* BOOLEAN. Indicates if this aggregator is active */ 190 u16 num_of_ports; 191 } aggregator_t; 192 193 struct port_params { 194 struct mac_addr system; 195 u16 system_priority; 196 u16 key; 197 u16 port_number; 198 u16 port_priority; 199 u16 port_state; 200 }; 201 202 /* port structure(43.4.6 in the 802.3ad standard) */ 203 typedef struct port { 204 u16 actor_port_number; 205 u16 actor_port_priority; 206 struct mac_addr actor_system; /* This parameter is added here although it is not specified in the standard, just for simplification */ 207 u16 actor_system_priority; /* This parameter is added here although it is not specified in the standard, just for simplification */ 208 u16 actor_port_aggregator_identifier; 209 bool ntt; 210 u16 actor_admin_port_key; 211 u16 actor_oper_port_key; 212 u8 actor_admin_port_state; 213 u8 actor_oper_port_state; 214 215 struct port_params partner_admin; 216 struct port_params partner_oper; 217 218 bool is_enabled; 219 220 /* ****** PRIVATE PARAMETERS ****** */ 221 u16 sm_vars; /* all state machines variables for this port */ 222 rx_states_t sm_rx_state; /* state machine rx state */ 223 u16 sm_rx_timer_counter; /* state machine rx timer counter */ 224 periodic_states_t sm_periodic_state; /* state machine periodic state */ 225 u16 sm_periodic_timer_counter; /* state machine periodic timer counter */ 226 mux_states_t sm_mux_state; /* state machine mux state */ 227 u16 sm_mux_timer_counter; /* state machine mux timer counter */ 228 u16 sm_tx_timer_counter; /* state machine tx timer counter 229 * (always on - enter to transmit 230 * state 3 time per second) 231 */ 232 u16 sm_churn_actor_timer_counter; 233 u16 sm_churn_partner_timer_counter; 234 u32 churn_actor_count; 235 u32 churn_partner_count; 236 churn_state_t sm_churn_actor_state; 237 churn_state_t sm_churn_partner_state; 238 struct slave *slave; /* pointer to the bond slave that this port belongs to */ 239 struct aggregator __rcu *aggregator; /* pointer to an aggregator that this port related to */ 240 struct port *next_port_in_aggregator; /* Next port on the linked list of the parent aggregator */ 241 u32 transaction_id; /* continuous number for identification of Marker PDU's; */ 242 struct lacpdu lacpdu; /* the lacpdu that will be sent for this port */ 243 } port_t; 244 245 /* system structure */ 246 struct ad_system { 247 u16 sys_priority; 248 struct mac_addr sys_mac_addr; 249 }; 250 251 #ifdef __ia64__ 252 #pragma pack() 253 #endif 254 255 /* ========== AD Exported structures to the main bonding code ========== */ 256 #define BOND_AD_INFO(bond) ((bond)->ad_info) 257 #define SLAVE_AD_INFO(slave) ((slave)->ad_info) 258 259 struct ad_bond_info { 260 struct ad_system system; /* 802.3ad system structure */ 261 struct bond_3ad_stats stats; 262 atomic_t agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */ 263 u16 aggregator_identifier; 264 }; 265 266 struct ad_slave_info { 267 struct aggregator aggregator; /* 802.3ad aggregator structure */ 268 struct port port; /* 802.3ad port structure */ 269 struct bond_3ad_stats stats; 270 u16 id; 271 u16 port_priority; 272 }; 273 274 static inline const char *bond_3ad_churn_desc(churn_state_t state) 275 { 276 static const char *const churn_description[] = { 277 "monitoring", 278 "churned", 279 "none", 280 "unknown" 281 }; 282 int max_size = ARRAY_SIZE(churn_description); 283 284 if (state >= max_size) 285 state = max_size - 1; 286 287 return churn_description[state]; 288 } 289 290 /* ========== AD Exported functions to the main bonding code ========== */ 291 void bond_3ad_initialize(struct bonding *bond); 292 void bond_3ad_bind_slave(struct slave *slave); 293 void bond_3ad_unbind_slave(struct slave *slave); 294 void bond_3ad_state_machine_handler(struct work_struct *); 295 void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout); 296 void bond_3ad_adapter_speed_duplex_changed(struct slave *slave); 297 void bond_3ad_handle_link_change(struct slave *slave, char link); 298 int bond_3ad_get_active_agg_info(const struct bonding *bond, struct ad_info *ad_info); 299 int __bond_3ad_get_active_agg_info(const struct bonding *bond, 300 struct ad_info *ad_info); 301 int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond, 302 struct slave *slave); 303 int bond_3ad_set_carrier(struct bonding *bond); 304 void bond_3ad_update_lacp_rate(struct bonding *bond); 305 void bond_3ad_update_lacp_active(struct bonding *bond); 306 void bond_3ad_update_ad_actor_settings(struct bonding *bond); 307 int bond_3ad_stats_fill(struct sk_buff *skb, struct bond_3ad_stats *stats); 308 size_t bond_3ad_stats_size(void); 309 #endif /* _NET_BOND_3AD_H */ 310 311