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311 lines
9.4 KiB
311 lines
9.4 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved. |
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*/ |
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#ifndef _NET_BOND_3AD_H |
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#define _NET_BOND_3AD_H |
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#include <asm/byteorder.h> |
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#include <linux/skbuff.h> |
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#include <linux/netdevice.h> |
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#include <linux/if_ether.h> |
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/* General definitions */ |
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#define PKT_TYPE_LACPDU cpu_to_be16(ETH_P_SLOW) |
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#define AD_TIMER_INTERVAL 100 /*msec*/ |
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#define MULTICAST_LACPDU_ADDR {0x01, 0x80, 0xC2, 0x00, 0x00, 0x02} |
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#define AD_LACP_SLOW 0 |
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#define AD_LACP_FAST 1 |
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typedef struct mac_addr { |
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u8 mac_addr_value[ETH_ALEN]; |
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} __packed mac_addr_t; |
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enum { |
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BOND_AD_STABLE = 0, |
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BOND_AD_BANDWIDTH = 1, |
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BOND_AD_COUNT = 2, |
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}; |
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/* rx machine states(43.4.11 in the 802.3ad standard) */ |
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typedef enum { |
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AD_RX_DUMMY, |
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AD_RX_INITIALIZE, /* rx Machine */ |
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AD_RX_PORT_DISABLED, /* rx Machine */ |
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AD_RX_LACP_DISABLED, /* rx Machine */ |
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AD_RX_EXPIRED, /* rx Machine */ |
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AD_RX_DEFAULTED, /* rx Machine */ |
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AD_RX_CURRENT /* rx Machine */ |
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} rx_states_t; |
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/* periodic machine states(43.4.12 in the 802.3ad standard) */ |
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typedef enum { |
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AD_PERIODIC_DUMMY, |
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AD_NO_PERIODIC, /* periodic machine */ |
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AD_FAST_PERIODIC, /* periodic machine */ |
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AD_SLOW_PERIODIC, /* periodic machine */ |
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AD_PERIODIC_TX /* periodic machine */ |
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} periodic_states_t; |
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/* mux machine states(43.4.13 in the 802.3ad standard) */ |
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typedef enum { |
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AD_MUX_DUMMY, |
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AD_MUX_DETACHED, /* mux machine */ |
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AD_MUX_WAITING, /* mux machine */ |
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AD_MUX_ATTACHED, /* mux machine */ |
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AD_MUX_COLLECTING_DISTRIBUTING /* mux machine */ |
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} mux_states_t; |
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/* tx machine states(43.4.15 in the 802.3ad standard) */ |
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typedef enum { |
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AD_TX_DUMMY, |
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AD_TRANSMIT /* tx Machine */ |
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} tx_states_t; |
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/* churn machine states(43.4.17 in the 802.3ad standard) */ |
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typedef enum { |
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AD_CHURN_MONITOR, /* monitoring for churn */ |
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AD_CHURN, /* churn detected (error) */ |
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AD_NO_CHURN /* no churn (no error) */ |
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} churn_state_t; |
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/* rx indication types */ |
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typedef enum { |
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AD_TYPE_LACPDU = 1, /* type lacpdu */ |
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AD_TYPE_MARKER /* type marker */ |
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} pdu_type_t; |
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/* rx marker indication types */ |
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typedef enum { |
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AD_MARKER_INFORMATION_SUBTYPE = 1, /* marker imformation subtype */ |
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AD_MARKER_RESPONSE_SUBTYPE /* marker response subtype */ |
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} bond_marker_subtype_t; |
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/* timers types(43.4.9 in the 802.3ad standard) */ |
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typedef enum { |
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AD_CURRENT_WHILE_TIMER, |
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AD_ACTOR_CHURN_TIMER, |
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AD_PERIODIC_TIMER, |
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AD_PARTNER_CHURN_TIMER, |
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AD_WAIT_WHILE_TIMER |
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} ad_timers_t; |
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#pragma pack(1) |
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/* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */ |
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typedef struct lacpdu { |
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u8 subtype; /* = LACP(= 0x01) */ |
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u8 version_number; |
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u8 tlv_type_actor_info; /* = actor information(type/length/value) */ |
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u8 actor_information_length; /* = 20 */ |
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__be16 actor_system_priority; |
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struct mac_addr actor_system; |
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__be16 actor_key; |
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__be16 actor_port_priority; |
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__be16 actor_port; |
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u8 actor_state; |
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u8 reserved_3_1[3]; /* = 0 */ |
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u8 tlv_type_partner_info; /* = partner information */ |
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u8 partner_information_length; /* = 20 */ |
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__be16 partner_system_priority; |
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struct mac_addr partner_system; |
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__be16 partner_key; |
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__be16 partner_port_priority; |
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__be16 partner_port; |
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u8 partner_state; |
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u8 reserved_3_2[3]; /* = 0 */ |
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u8 tlv_type_collector_info; /* = collector information */ |
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u8 collector_information_length;/* = 16 */ |
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__be16 collector_max_delay; |
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u8 reserved_12[12]; |
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u8 tlv_type_terminator; /* = terminator */ |
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u8 terminator_length; /* = 0 */ |
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u8 reserved_50[50]; /* = 0 */ |
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} __packed lacpdu_t; |
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typedef struct lacpdu_header { |
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struct ethhdr hdr; |
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struct lacpdu lacpdu; |
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} __packed lacpdu_header_t; |
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/* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */ |
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typedef struct bond_marker { |
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u8 subtype; /* = 0x02 (marker PDU) */ |
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u8 version_number; /* = 0x01 */ |
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u8 tlv_type; /* = 0x01 (marker information) */ |
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/* = 0x02 (marker response information) */ |
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u8 marker_length; /* = 0x16 */ |
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u16 requester_port; /* The number assigned to the port by the requester */ |
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struct mac_addr requester_system; /* The requester's system id */ |
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u32 requester_transaction_id; /* The transaction id allocated by the requester, */ |
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u16 pad; /* = 0 */ |
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u8 tlv_type_terminator; /* = 0x00 */ |
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u8 terminator_length; /* = 0x00 */ |
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u8 reserved_90[90]; /* = 0 */ |
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} __packed bond_marker_t; |
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typedef struct bond_marker_header { |
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struct ethhdr hdr; |
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struct bond_marker marker; |
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} __packed bond_marker_header_t; |
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#pragma pack() |
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struct slave; |
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struct bonding; |
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struct ad_info; |
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struct port; |
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#ifdef __ia64__ |
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#pragma pack(8) |
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#endif |
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struct bond_3ad_stats { |
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atomic64_t lacpdu_rx; |
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atomic64_t lacpdu_tx; |
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atomic64_t lacpdu_unknown_rx; |
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atomic64_t lacpdu_illegal_rx; |
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atomic64_t marker_rx; |
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atomic64_t marker_tx; |
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atomic64_t marker_resp_rx; |
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atomic64_t marker_resp_tx; |
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atomic64_t marker_unknown_rx; |
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}; |
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/* aggregator structure(43.4.5 in the 802.3ad standard) */ |
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typedef struct aggregator { |
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struct mac_addr aggregator_mac_address; |
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u16 aggregator_identifier; |
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bool is_individual; |
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u16 actor_admin_aggregator_key; |
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u16 actor_oper_aggregator_key; |
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struct mac_addr partner_system; |
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u16 partner_system_priority; |
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u16 partner_oper_aggregator_key; |
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u16 receive_state; /* BOOLEAN */ |
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u16 transmit_state; /* BOOLEAN */ |
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struct port *lag_ports; |
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/* ****** PRIVATE PARAMETERS ****** */ |
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struct slave *slave; /* pointer to the bond slave that this aggregator belongs to */ |
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u16 is_active; /* BOOLEAN. Indicates if this aggregator is active */ |
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u16 num_of_ports; |
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} aggregator_t; |
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struct port_params { |
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struct mac_addr system; |
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u16 system_priority; |
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u16 key; |
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u16 port_number; |
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u16 port_priority; |
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u16 port_state; |
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}; |
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/* port structure(43.4.6 in the 802.3ad standard) */ |
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typedef struct port { |
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u16 actor_port_number; |
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u16 actor_port_priority; |
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struct mac_addr actor_system; /* This parameter is added here although it is not specified in the standard, just for simplification */ |
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u16 actor_system_priority; /* This parameter is added here although it is not specified in the standard, just for simplification */ |
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u16 actor_port_aggregator_identifier; |
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bool ntt; |
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u16 actor_admin_port_key; |
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u16 actor_oper_port_key; |
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u8 actor_admin_port_state; |
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u8 actor_oper_port_state; |
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struct port_params partner_admin; |
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struct port_params partner_oper; |
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bool is_enabled; |
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/* ****** PRIVATE PARAMETERS ****** */ |
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u16 sm_vars; /* all state machines variables for this port */ |
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rx_states_t sm_rx_state; /* state machine rx state */ |
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u16 sm_rx_timer_counter; /* state machine rx timer counter */ |
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periodic_states_t sm_periodic_state; /* state machine periodic state */ |
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u16 sm_periodic_timer_counter; /* state machine periodic timer counter */ |
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mux_states_t sm_mux_state; /* state machine mux state */ |
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u16 sm_mux_timer_counter; /* state machine mux timer counter */ |
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tx_states_t sm_tx_state; /* state machine tx state */ |
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u16 sm_tx_timer_counter; /* state machine tx timer counter(allways on - enter to transmit state 3 time per second) */ |
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u16 sm_churn_actor_timer_counter; |
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u16 sm_churn_partner_timer_counter; |
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u32 churn_actor_count; |
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u32 churn_partner_count; |
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churn_state_t sm_churn_actor_state; |
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churn_state_t sm_churn_partner_state; |
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struct slave *slave; /* pointer to the bond slave that this port belongs to */ |
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struct aggregator *aggregator; /* pointer to an aggregator that this port related to */ |
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struct port *next_port_in_aggregator; /* Next port on the linked list of the parent aggregator */ |
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u32 transaction_id; /* continuous number for identification of Marker PDU's; */ |
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struct lacpdu lacpdu; /* the lacpdu that will be sent for this port */ |
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} port_t; |
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/* system structure */ |
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struct ad_system { |
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u16 sys_priority; |
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struct mac_addr sys_mac_addr; |
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}; |
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#ifdef __ia64__ |
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#pragma pack() |
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#endif |
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/* ========== AD Exported structures to the main bonding code ========== */ |
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#define BOND_AD_INFO(bond) ((bond)->ad_info) |
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#define SLAVE_AD_INFO(slave) ((slave)->ad_info) |
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struct ad_bond_info { |
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struct ad_system system; /* 802.3ad system structure */ |
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struct bond_3ad_stats stats; |
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u32 agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */ |
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u16 aggregator_identifier; |
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}; |
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struct ad_slave_info { |
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struct aggregator aggregator; /* 802.3ad aggregator structure */ |
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struct port port; /* 802.3ad port structure */ |
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struct bond_3ad_stats stats; |
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u16 id; |
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}; |
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static inline const char *bond_3ad_churn_desc(churn_state_t state) |
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{ |
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static const char *const churn_description[] = { |
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"monitoring", |
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"churned", |
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"none", |
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"unknown" |
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}; |
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int max_size = ARRAY_SIZE(churn_description); |
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if (state >= max_size) |
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state = max_size - 1; |
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return churn_description[state]; |
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} |
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/* ========== AD Exported functions to the main bonding code ========== */ |
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void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution); |
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void bond_3ad_bind_slave(struct slave *slave); |
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void bond_3ad_unbind_slave(struct slave *slave); |
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void bond_3ad_state_machine_handler(struct work_struct *); |
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void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout); |
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void bond_3ad_adapter_speed_duplex_changed(struct slave *slave); |
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void bond_3ad_handle_link_change(struct slave *slave, char link); |
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int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info); |
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int __bond_3ad_get_active_agg_info(struct bonding *bond, |
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struct ad_info *ad_info); |
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int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond, |
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struct slave *slave); |
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int bond_3ad_set_carrier(struct bonding *bond); |
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void bond_3ad_update_lacp_rate(struct bonding *bond); |
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void bond_3ad_update_ad_actor_settings(struct bonding *bond); |
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int bond_3ad_stats_fill(struct sk_buff *skb, struct bond_3ad_stats *stats); |
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size_t bond_3ad_stats_size(void); |
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#endif /* _NET_BOND_3AD_H */ |
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