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 }; 30 31 /* rx machine states(43.4.11 in the 802.3ad standard) */ 32 typedef enum { 33 AD_RX_DUMMY, 34 AD_RX_INITIALIZE, /* rx Machine */ 35 AD_RX_PORT_DISABLED, /* rx Machine */ 36 AD_RX_LACP_DISABLED, /* rx Machine */ 37 AD_RX_EXPIRED, /* rx Machine */ 38 AD_RX_DEFAULTED, /* rx Machine */ 39 AD_RX_CURRENT /* rx Machine */ 40 } rx_states_t; 41 42 /* periodic machine states(43.4.12 in the 802.3ad standard) */ 43 typedef enum { 44 AD_PERIODIC_DUMMY, 45 AD_NO_PERIODIC, /* periodic machine */ 46 AD_FAST_PERIODIC, /* periodic machine */ 47 AD_SLOW_PERIODIC, /* periodic machine */ 48 AD_PERIODIC_TX /* periodic machine */ 49 } periodic_states_t; 50 51 /* mux machine states(43.4.13 in the 802.3ad standard) */ 52 typedef enum { 53 AD_MUX_DUMMY, 54 AD_MUX_DETACHED, /* mux machine */ 55 AD_MUX_WAITING, /* mux machine */ 56 AD_MUX_ATTACHED, /* mux machine */ 57 AD_MUX_COLLECTING_DISTRIBUTING /* mux machine */ 58 } mux_states_t; 59 60 /* tx machine states(43.4.15 in the 802.3ad standard) */ 61 typedef enum { 62 AD_TX_DUMMY, 63 AD_TRANSMIT /* tx Machine */ 64 } tx_states_t; 65 66 /* churn machine states(43.4.17 in the 802.3ad standard) */ 67 typedef enum { 68 AD_CHURN_MONITOR, /* monitoring for churn */ 69 AD_CHURN, /* churn detected (error) */ 70 AD_NO_CHURN /* no churn (no error) */ 71 } churn_state_t; 72 73 /* rx indication types */ 74 typedef enum { 75 AD_TYPE_LACPDU = 1, /* type lacpdu */ 76 AD_TYPE_MARKER /* type marker */ 77 } pdu_type_t; 78 79 /* rx marker indication types */ 80 typedef enum { 81 AD_MARKER_INFORMATION_SUBTYPE = 1, /* marker imformation subtype */ 82 AD_MARKER_RESPONSE_SUBTYPE /* marker response subtype */ 83 } bond_marker_subtype_t; 84 85 /* timers types(43.4.9 in the 802.3ad standard) */ 86 typedef enum { 87 AD_CURRENT_WHILE_TIMER, 88 AD_ACTOR_CHURN_TIMER, 89 AD_PERIODIC_TIMER, 90 AD_PARTNER_CHURN_TIMER, 91 AD_WAIT_WHILE_TIMER 92 } ad_timers_t; 93 94 #pragma pack(1) 95 96 /* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */ 97 typedef struct lacpdu { 98 u8 subtype; /* = LACP(= 0x01) */ 99 u8 version_number; 100 u8 tlv_type_actor_info; /* = actor information(type/length/value) */ 101 u8 actor_information_length; /* = 20 */ 102 __be16 actor_system_priority; 103 struct mac_addr actor_system; 104 __be16 actor_key; 105 __be16 actor_port_priority; 106 __be16 actor_port; 107 u8 actor_state; 108 u8 reserved_3_1[3]; /* = 0 */ 109 u8 tlv_type_partner_info; /* = partner information */ 110 u8 partner_information_length; /* = 20 */ 111 __be16 partner_system_priority; 112 struct mac_addr partner_system; 113 __be16 partner_key; 114 __be16 partner_port_priority; 115 __be16 partner_port; 116 u8 partner_state; 117 u8 reserved_3_2[3]; /* = 0 */ 118 u8 tlv_type_collector_info; /* = collector information */ 119 u8 collector_information_length;/* = 16 */ 120 __be16 collector_max_delay; 121 u8 reserved_12[12]; 122 u8 tlv_type_terminator; /* = terminator */ 123 u8 terminator_length; /* = 0 */ 124 u8 reserved_50[50]; /* = 0 */ 125 } __packed lacpdu_t; 126 127 typedef struct lacpdu_header { 128 struct ethhdr hdr; 129 struct lacpdu lacpdu; 130 } __packed lacpdu_header_t; 131 132 /* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */ 133 typedef struct bond_marker { 134 u8 subtype; /* = 0x02 (marker PDU) */ 135 u8 version_number; /* = 0x01 */ 136 u8 tlv_type; /* = 0x01 (marker information) */ 137 /* = 0x02 (marker response information) */ 138 u8 marker_length; /* = 0x16 */ 139 u16 requester_port; /* The number assigned to the port by the requester */ 140 struct mac_addr requester_system; /* The requester's system id */ 141 u32 requester_transaction_id; /* The transaction id allocated by the requester, */ 142 u16 pad; /* = 0 */ 143 u8 tlv_type_terminator; /* = 0x00 */ 144 u8 terminator_length; /* = 0x00 */ 145 u8 reserved_90[90]; /* = 0 */ 146 } __packed bond_marker_t; 147 148 typedef struct bond_marker_header { 149 struct ethhdr hdr; 150 struct bond_marker marker; 151 } __packed bond_marker_header_t; 152 153 #pragma pack() 154 155 struct slave; 156 struct bonding; 157 struct ad_info; 158 struct port; 159 160 #ifdef __ia64__ 161 #pragma pack(8) 162 #endif 163 164 struct bond_3ad_stats { 165 atomic64_t lacpdu_rx; 166 atomic64_t lacpdu_tx; 167 atomic64_t lacpdu_unknown_rx; 168 atomic64_t lacpdu_illegal_rx; 169 170 atomic64_t marker_rx; 171 atomic64_t marker_tx; 172 atomic64_t marker_resp_rx; 173 atomic64_t marker_resp_tx; 174 atomic64_t marker_unknown_rx; 175 }; 176 177 /* aggregator structure(43.4.5 in the 802.3ad standard) */ 178 typedef struct aggregator { 179 struct mac_addr aggregator_mac_address; 180 u16 aggregator_identifier; 181 bool is_individual; 182 u16 actor_admin_aggregator_key; 183 u16 actor_oper_aggregator_key; 184 struct mac_addr partner_system; 185 u16 partner_system_priority; 186 u16 partner_oper_aggregator_key; 187 u16 receive_state; /* BOOLEAN */ 188 u16 transmit_state; /* BOOLEAN */ 189 struct port *lag_ports; 190 /* ****** PRIVATE PARAMETERS ****** */ 191 struct slave *slave; /* pointer to the bond slave that this aggregator belongs to */ 192 u16 is_active; /* BOOLEAN. Indicates if this aggregator is active */ 193 u16 num_of_ports; 194 } aggregator_t; 195 196 struct port_params { 197 struct mac_addr system; 198 u16 system_priority; 199 u16 key; 200 u16 port_number; 201 u16 port_priority; 202 u16 port_state; 203 }; 204 205 /* port structure(43.4.6 in the 802.3ad standard) */ 206 typedef struct port { 207 u16 actor_port_number; 208 u16 actor_port_priority; 209 struct mac_addr actor_system; /* This parameter is added here although it is not specified in the standard, just for simplification */ 210 u16 actor_system_priority; /* This parameter is added here although it is not specified in the standard, just for simplification */ 211 u16 actor_port_aggregator_identifier; 212 bool ntt; 213 u16 actor_admin_port_key; 214 u16 actor_oper_port_key; 215 u8 actor_admin_port_state; 216 u8 actor_oper_port_state; 217 218 struct port_params partner_admin; 219 struct port_params partner_oper; 220 221 bool is_enabled; 222 223 /* ****** PRIVATE PARAMETERS ****** */ 224 u16 sm_vars; /* all state machines variables for this port */ 225 rx_states_t sm_rx_state; /* state machine rx state */ 226 u16 sm_rx_timer_counter; /* state machine rx timer counter */ 227 periodic_states_t sm_periodic_state; /* state machine periodic state */ 228 u16 sm_periodic_timer_counter; /* state machine periodic timer counter */ 229 mux_states_t sm_mux_state; /* state machine mux state */ 230 u16 sm_mux_timer_counter; /* state machine mux timer counter */ 231 tx_states_t sm_tx_state; /* state machine tx state */ 232 u16 sm_tx_timer_counter; /* state machine tx timer counter(allways on - enter to transmit state 3 time per second) */ 233 u16 sm_churn_actor_timer_counter; 234 u16 sm_churn_partner_timer_counter; 235 u32 churn_actor_count; 236 u32 churn_partner_count; 237 churn_state_t sm_churn_actor_state; 238 churn_state_t sm_churn_partner_state; 239 struct slave *slave; /* pointer to the bond slave that this port belongs to */ 240 struct aggregator *aggregator; /* pointer to an aggregator that this port related to */ 241 struct port *next_port_in_aggregator; /* Next port on the linked list of the parent aggregator */ 242 u32 transaction_id; /* continuous number for identification of Marker PDU's; */ 243 struct lacpdu lacpdu; /* the lacpdu that will be sent for this port */ 244 } port_t; 245 246 /* system structure */ 247 struct ad_system { 248 u16 sys_priority; 249 struct mac_addr sys_mac_addr; 250 }; 251 252 #ifdef __ia64__ 253 #pragma pack() 254 #endif 255 256 /* ========== AD Exported structures to the main bonding code ========== */ 257 #define BOND_AD_INFO(bond) ((bond)->ad_info) 258 #define SLAVE_AD_INFO(slave) ((slave)->ad_info) 259 260 struct ad_bond_info { 261 struct ad_system system; /* 802.3ad system structure */ 262 struct bond_3ad_stats stats; 263 atomic_t agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */ 264 u16 aggregator_identifier; 265 }; 266 267 struct ad_slave_info { 268 struct aggregator aggregator; /* 802.3ad aggregator structure */ 269 struct port port; /* 802.3ad port structure */ 270 struct bond_3ad_stats stats; 271 u16 id; 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(struct bonding *bond, struct ad_info *ad_info); 299 int __bond_3ad_get_active_agg_info(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_ad_actor_settings(struct bonding *bond); 306 int bond_3ad_stats_fill(struct sk_buff *skb, struct bond_3ad_stats *stats); 307 size_t bond_3ad_stats_size(void); 308 #endif /* _NET_BOND_3AD_H */ 309 310