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bond_3ad.h
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved. */ #ifndef _NET_BOND_3AD_H #define _NET_BOND_3AD_H #include <asm/byteorder.h> #include <linux/skbuff.h> #include <linux/netdevice.h> #include <linux/if_ether.h> /* General definitions */ #define PKT_TYPE_LACPDU cpu_to_be16(ETH_P_SLOW) #define AD_TIMER_INTERVAL 100 /*msec*/ #define AD_LACP_SLOW 0 #define AD_LACP_FAST 1 typedef struct mac_addr { u8 mac_addr_value[ETH_ALEN]; } __packed mac_addr_t; enum { BOND_AD_STABLE = 0, BOND_AD_BANDWIDTH = 1, BOND_AD_COUNT = 2, }; /* rx machine states(43.4.11 in the 802.3ad standard) */ typedef enum { AD_RX_DUMMY, AD_RX_INITIALIZE, /* rx Machine */ AD_RX_PORT_DISABLED, /* rx Machine */ AD_RX_LACP_DISABLED, /* rx Machine */ AD_RX_EXPIRED, /* rx Machine */ AD_RX_DEFAULTED, /* rx Machine */ AD_RX_CURRENT /* rx Machine */ } rx_states_t; /* periodic machine states(43.4.12 in the 802.3ad standard) */ typedef enum { AD_PERIODIC_DUMMY, AD_NO_PERIODIC, /* periodic machine */ AD_FAST_PERIODIC, /* periodic machine */ AD_SLOW_PERIODIC, /* periodic machine */ AD_PERIODIC_TX /* periodic machine */ } periodic_states_t; /* mux machine states(43.4.13 in the 802.3ad standard) */ typedef enum { AD_MUX_DUMMY, AD_MUX_DETACHED, /* mux machine */ AD_MUX_WAITING, /* mux machine */ AD_MUX_ATTACHED, /* mux machine */ AD_MUX_COLLECTING_DISTRIBUTING /* mux machine */ } mux_states_t; /* tx machine states(43.4.15 in the 802.3ad standard) */ typedef enum { AD_TX_DUMMY, AD_TRANSMIT /* tx Machine */ } tx_states_t; /* churn machine states(43.4.17 in the 802.3ad standard) */ typedef enum { AD_CHURN_MONITOR, /* monitoring for churn */ AD_CHURN, /* churn detected (error) */ AD_NO_CHURN /* no churn (no error) */ } churn_state_t; /* rx indication types */ typedef enum { AD_TYPE_LACPDU = 1, /* type lacpdu */ AD_TYPE_MARKER /* type marker */ } pdu_type_t; /* rx marker indication types */ typedef enum { AD_MARKER_INFORMATION_SUBTYPE = 1, /* marker imformation subtype */ AD_MARKER_RESPONSE_SUBTYPE /* marker response subtype */ } bond_marker_subtype_t; /* timers types(43.4.9 in the 802.3ad standard) */ typedef enum { AD_CURRENT_WHILE_TIMER, AD_ACTOR_CHURN_TIMER, AD_PERIODIC_TIMER, AD_PARTNER_CHURN_TIMER, AD_WAIT_WHILE_TIMER } ad_timers_t; #pragma pack(1) /* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */ typedef struct lacpdu { u8 subtype; /* = LACP(= 0x01) */ u8 version_number; u8 tlv_type_actor_info; /* = actor information(type/length/value) */ u8 actor_information_length; /* = 20 */ __be16 actor_system_priority; struct mac_addr actor_system; __be16 actor_key; __be16 actor_port_priority; __be16 actor_port; u8 actor_state; u8 reserved_3_1[3]; /* = 0 */ u8 tlv_type_partner_info; /* = partner information */ u8 partner_information_length; /* = 20 */ __be16 partner_system_priority; struct mac_addr partner_system; __be16 partner_key; __be16 partner_port_priority; __be16 partner_port; u8 partner_state; u8 reserved_3_2[3]; /* = 0 */ u8 tlv_type_collector_info; /* = collector information */ u8 collector_information_length;/* = 16 */ __be16 collector_max_delay; u8 reserved_12[12]; u8 tlv_type_terminator; /* = terminator */ u8 terminator_length; /* = 0 */ u8 reserved_50[50]; /* = 0 */ } __packed lacpdu_t; typedef struct lacpdu_header { struct ethhdr hdr; struct lacpdu lacpdu; } __packed lacpdu_header_t; /* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */ typedef struct bond_marker { u8 subtype; /* = 0x02 (marker PDU) */ u8 version_number; /* = 0x01 */ u8 tlv_type; /* = 0x01 (marker information) */ /* = 0x02 (marker response information) */ u8 marker_length; /* = 0x16 */ u16 requester_port; /* The number assigned to the port by the requester */ struct mac_addr requester_system; /* The requester's system id */ u32 requester_transaction_id; /* The transaction id allocated by the requester, */ u16 pad; /* = 0 */ u8 tlv_type_terminator; /* = 0x00 */ u8 terminator_length; /* = 0x00 */ u8 reserved_90[90]; /* = 0 */ } __packed bond_marker_t; typedef struct bond_marker_header { struct ethhdr hdr; struct bond_marker marker; } __packed bond_marker_header_t; #pragma pack() struct slave; struct bonding; struct ad_info; struct port; #ifdef __ia64__ #pragma pack(8) #endif struct bond_3ad_stats { atomic64_t lacpdu_rx; atomic64_t lacpdu_tx; atomic64_t lacpdu_unknown_rx; atomic64_t lacpdu_illegal_rx; atomic64_t marker_rx; atomic64_t marker_tx; atomic64_t marker_resp_rx; atomic64_t marker_resp_tx; atomic64_t marker_unknown_rx; }; /* aggregator structure(43.4.5 in the 802.3ad standard) */ typedef struct aggregator { struct mac_addr aggregator_mac_address; u16 aggregator_identifier; bool is_individual; u16 actor_admin_aggregator_key; u16 actor_oper_aggregator_key; struct mac_addr partner_system; u16 partner_system_priority; u16 partner_oper_aggregator_key; u16 receive_state; /* BOOLEAN */ u16 transmit_state; /* BOOLEAN */ struct port *lag_ports; /* ****** PRIVATE PARAMETERS ****** */ struct slave *slave; /* pointer to the bond slave that this aggregator belongs to */ u16 is_active; /* BOOLEAN. Indicates if this aggregator is active */ u16 num_of_ports; } aggregator_t; struct port_params { struct mac_addr system; u16 system_priority; u16 key; u16 port_number; u16 port_priority; u16 port_state; }; /* port structure(43.4.6 in the 802.3ad standard) */ typedef struct port { u16 actor_port_number; u16 actor_port_priority; struct mac_addr actor_system; /* This parameter is added here although it is not specified in the standard, just for simplification */ u16 actor_system_priority; /* This parameter is added here although it is not specified in the standard, just for simplification */ u16 actor_port_aggregator_identifier; bool ntt; u16 actor_admin_port_key; u16 actor_oper_port_key; u8 actor_admin_port_state; u8 actor_oper_port_state; struct port_params partner_admin; struct port_params partner_oper; bool is_enabled; /* ****** PRIVATE PARAMETERS ****** */ u16 sm_vars; /* all state machines variables for this port */ rx_states_t sm_rx_state; /* state machine rx state */ u16 sm_rx_timer_counter; /* state machine rx timer counter */ periodic_states_t sm_periodic_state; /* state machine periodic state */ u16 sm_periodic_timer_counter; /* state machine periodic timer counter */ mux_states_t sm_mux_state; /* state machine mux state */ u16 sm_mux_timer_counter; /* state machine mux timer counter */ tx_states_t sm_tx_state; /* state machine tx state */ u16 sm_tx_timer_counter; /* state machine tx timer counter(allways on - enter to transmit state 3 time per second) */ u16 sm_churn_actor_timer_counter; u16 sm_churn_partner_timer_counter; u32 churn_actor_count; u32 churn_partner_count; churn_state_t sm_churn_actor_state; churn_state_t sm_churn_partner_state; struct slave *slave; /* pointer to the bond slave that this port belongs to */ struct aggregator *aggregator; /* pointer to an aggregator that this port related to */ struct port *next_port_in_aggregator; /* Next port on the linked list of the parent aggregator */ u32 transaction_id; /* continuous number for identification of Marker PDU's; */ struct lacpdu lacpdu; /* the lacpdu that will be sent for this port */ } port_t; /* system structure */ struct ad_system { u16 sys_priority; struct mac_addr sys_mac_addr; }; #ifdef __ia64__ #pragma pack() #endif /* ========== AD Exported structures to the main bonding code ========== */ #define BOND_AD_INFO(bond) ((bond)->ad_info) #define SLAVE_AD_INFO(slave) ((slave)->ad_info) struct ad_bond_info { struct ad_system system; /* 802.3ad system structure */ struct bond_3ad_stats stats; atomic_t agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */ u16 aggregator_identifier; }; struct ad_slave_info { struct aggregator aggregator; /* 802.3ad aggregator structure */ struct port port; /* 802.3ad port structure */ struct bond_3ad_stats stats; u16 id; }; static inline const char *bond_3ad_churn_desc(churn_state_t state) { static const char *const churn_description[] = { "monitoring", "churned", "none", "unknown" }; int max_size = ARRAY_SIZE(churn_description); if (state >= max_size) state = max_size - 1; return churn_description[state]; } /* ========== AD Exported functions to the main bonding code ========== */ void bond_3ad_initialize(struct bonding *bond); void bond_3ad_bind_slave(struct slave *slave); void bond_3ad_unbind_slave(struct slave *slave); void bond_3ad_state_machine_handler(struct work_struct *); void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout); void bond_3ad_adapter_speed_duplex_changed(struct slave *slave); void bond_3ad_handle_link_change(struct slave *slave, char link); int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info); int __bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info); int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond, struct slave *slave); int bond_3ad_set_carrier(struct bonding *bond); void bond_3ad_update_lacp_rate(struct bonding *bond); void bond_3ad_update_ad_actor_settings(struct bonding *bond); int bond_3ad_stats_fill(struct sk_buff *skb, struct bond_3ad_stats *stats); size_t bond_3ad_stats_size(void); #endif /* _NET_BOND_3AD_H */
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