session.h File Reference

#include "proto_bfd.h"

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Data Structures
struct	bfd_session_t
struct	bfd_wrapper_t

Enumerations
enum	bfd_state_change_t : uint8_t {   BFD_STATE_CHANGE_INVALID = 0 ,   BFD_STATE_CHANGE_NONE ,   BFD_STATE_CHANGE_ADMIN_DOWN ,   BFD_STATE_CHANGE_PEER_DOWN ,   BFD_STATE_CHANGE_INIT ,   BFD_STATE_CHANGE_UP ,   BFD_STATE_CHANGE_TIMEOUT_DOWN }
enum	bfd_wrapper_type_t : uint8_t {   BFD_WRAPPER_INVALID = 0 ,   BFD_WRAPPER_RECV_PACKET ,   BFD_WRAPPER_SEND_PACKET ,   BFD_WRAPPER_STATE_CHANGE }

Functions
void	bfd_session_admin_down (bfd_session_t *session)
int	bfd_session_init (bfd_session_t *session)
bfd_state_change_t	bfd_session_process (bfd_session_t *session, bfd_packet_t *bfd)
void	bfd_session_start (bfd_session_t *session)

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Data Structure Documentation

bfd_session_t

struct bfd_session_t

Definition at line 28 of file session.h.

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Data Fields
bool	auth_seq_known	do we know the authentication sequence number?
bfd_auth_type_t	auth_type	what kind of authentication is used
fr_client_t	client	might as well reuse this, others need it
bool	demand_mode	demand is "once session is up, stop sending packets"
fr_time_delta_t	desired_min_tx_interval	intervals between transmits
uint32_t	detect_multi
fr_time_delta_t	detection_time	used to set ev_timeout
int	detection_timeouts	too many timeouts means !auth_seq_known
bool	doing_poll
fr_event_list_t *	el	event list
void *	inst	proto_bfd_udp instance using this session
fr_time_t	last_recv	last received packet
fr_time_t	last_sent	the last time we sent a packet
fr_listen_t *	listen	associated listener
bfd_diag_t	local_diag	diagnostics for errors
uint32_t	local_disc	our session ID, which is unique to this session
socklen_t	local_salen
struct sockaddr_storage	local_sockaddr	cached for laziness
fr_time_delta_t	my_min_echo_rx_interval	what we send for echo_rx_interval
fr_time_delta_t	next_min_tx_interval	how to update this when we're polling
fr_time_t	next_recv	when we next expect to receive a packet
fr_network_t *	nr	network side of things
bool	only_state_changes	copied from proto_bfd_udp.c
fr_timer_t *	packet_ev	for when we next send a packet
bool	passive	active or passive role from RFC 5880 - unused
uint16_t	port	peer port where packets are sent to
uint32_t	recv_auth_seq	their auth_seq number
bool	remote_demand_mode	their demand mode
uint32_t	remote_disc	their session ID
fr_time_delta_t	remote_min_rx_interval	their min_rx_interval
socklen_t	remote_salen
bfd_session_state_t	remote_session_state	their view of the session state
struct sockaddr_storage	remote_sockaddr	cached for laziness
fr_time_delta_t	required_min_rx_interval	intervals between receives
size_t	secret_len	doesn't change while we're running
char const *	server_name	our name
bfd_session_state_t	session_state	our view of the session state
int	sockfd	cached for laziness
fr_timer_t *	timeout_ev	when we time out for not receiving a packet
uint32_t	xmit_auth_seq	our auth_seq number

bfd_wrapper_t

struct bfd_wrapper_t

Definition at line 141 of file session.h.

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Data Fields
uint8_t	packet[]
bfd_session_t *	session
bfd_state_change_t	state_change
uint32_t	type

Enumeration Type Documentation

bfd_state_change_t

enum bfd_state_change_t : uint8_t

Enumerator
BFD_STATE_CHANGE_INVALID
BFD_STATE_CHANGE_NONE	no state change
BFD_STATE_CHANGE_ADMIN_DOWN	we are admin-down
BFD_STATE_CHANGE_PEER_DOWN	the peer has signalled us that he's Down.
BFD_STATE_CHANGE_INIT	we are going to INIT
BFD_STATE_CHANGE_UP	we are going to UP
BFD_STATE_CHANGE_TIMEOUT_DOWN

Definition at line 131 of file session.h.

bfd_wrapper_type_t

enum bfd_wrapper_type_t : uint8_t

Enumerator
BFD_WRAPPER_INVALID
BFD_WRAPPER_RECV_PACKET
BFD_WRAPPER_SEND_PACKET
BFD_WRAPPER_STATE_CHANGE

Definition at line 124 of file session.h.

Function Documentation

bfd_session_admin_down()

void bfd_session_admin_down

(

bfd_session_t *

session

)

Definition at line 75 of file session.c.

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bfd_session_init()

int bfd_session_init

(

bfd_session_t *

session

)

Definition at line 1074 of file session.c.

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bfd_session_process()

bfd_state_change_t bfd_session_process	(	bfd_session_t *	session,
		bfd_packet_t *	bfd
	)

Definition at line 150 of file session.c.

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bfd_session_start()

void bfd_session_start

(

bfd_session_t *

session

)

Definition at line 1098 of file session.c.

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