119 lines
2.5 KiB
C
119 lines
2.5 KiB
C
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#ifndef _BIRD_BFD_H_
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#define _BIRD_BFD_H_
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#define BFD_CONTROL_PORT 3784
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#define BFD_ECHO_PORT 3785
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#define BFD_MULTI_CTL_PORT 4784
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#define BFD_DEFAULT_MIN_RX_INT (10 MS)
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#define BFD_DEFAULT_MIN_TX_INT (100 MS)
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#define BFD_DEFAULT_IDLE_TX_INT (1 S)
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#define BFD_DEFAULT_MULTIPLIER 5
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struct bfd_config
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{
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struct proto_config c;
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list neighbors; /* List of struct bfd_neighbor */
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};
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struct bfd_session_config
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{
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u32 min_rx_int;
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u32 min_tx_int;
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u32 idle_tx_int;
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u8 multiplier;
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u8 multihop;
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u8 passive;
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};
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struct bfd_neighbor
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{
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node n;
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ip_addr addr;
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ip_addr local;
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struct iface *iface;
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struct bfd_session_config *opts;
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struct bfd_session *session;
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};
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struct bfd_proto
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{
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struct proto p;
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slab *session_slab;
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HASH(struct bfd_session) session_hash_id;
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HASH(struct bfd_session) session_hash_ip;
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list sockets;
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};
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struct bfd_socket
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{
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node n;
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sock *sk;
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u32 uc;
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};
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struct bfd_session
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{
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node n;
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struct bfd_session *next_id; /* Next in bfd.session_hash_id */
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struct bfd_session *next_ip; /* Next in bfd.session_hash_ip */
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u8 opened;
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u8 poll_active;
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u8 poll_scheduled;
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u8 loc_state;
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u8 rem_state;
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u8 loc_diag;
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u32 loc_id; /* Local session ID (local discriminator) */
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u32 rem_id; /* Remote session ID (remote discriminator) */
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u32 des_min_tx_int; /* Desired min rx interval, local option */
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u32 des_min_tx_new; /* Used for des_min_tx_int change */
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u32 req_min_rx_int; /* Required min tx interval, local option */
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u32 req_min_rx_new; /* Used for req_min_rx_int change */
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u32 rem_min_tx_int; /* Last received des_min_tx_int */
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u32 rem_min_rx_int; /* Last received req_min_rx_int */
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u8 demand_mode; /* Currently unused */
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u8 rem_demand_mode;
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u8 detect_mult; /* Announced detect_mult, local option */
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u8 rem_detect_mult; /* Last received detect_mult */
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xxx_time last_tx; /* Time of last sent periodic control packet */
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xxx_time last_rx; /* Time of last received valid control packet */
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timer2 *tx_timer; /* Periodic control packet timer */
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timer2 *hold_timer; /* Timer for session down detection time */
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};
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#define BFD_STATE_ADMIN_DOWN 0
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#define BFD_STATE_DOWN 1
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#define BFD_STATE_INIT 2
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#define BFD_STATE_UP 3
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#define BFD_DIAG_NOTHING 0
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#define BFD_DIAG_TIMEOUT 1
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#define BFD_DIAG_ECHO_FAILED 2
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#define BFD_DIAG_NEIGHBOR_DOWN 3
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#define BFD_DIAG_FWD_RESET 4
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#define BFD_DIAG_PATH_DOWN 5
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#define BFD_DIAG_C_PATH_DOWN 6
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#define BFD_DIAG_ADMIN_DOWN 7
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#define BFD_DIAG_RC_PATH_DOWN 8
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#define BFD_POLL_TX 1
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#define BFD_POLL_RX 2
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#endif _BIRD_BFD_H_
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