The implementation of a CAN network interface. More...

Collaboration diagram for io_can_net:

Data Fields
struct io_svc	svc
	The I/O service representing the channel.

io_ctx_t *	ctx
	A pointer to the I/O context with which the channel is registered.

ev_exec_t *	exec
	A pointer to the executor ...

io_timer_t *	timer
	A pointer to the timer used for CAN network events.

io_tqueue_t *	tq
	A pointer to the timer queue used to schedule wait operations.

struct io_tqueue_wait	wait_next
	The operation used to wait for the next CANopen event.

struct io_tqueue_wait	wait_confirm
	The operation used to wait for a CAN frame write confirmation.

int	txtimeo
	The timeout (in milliseconds) when waiting for a CAN frame write confirmation.

io_can_chan_t *	chan
	A pointer to a CAN channel.

struct can_msg	read_msg
	The CAN frame being read.

struct can_err	read_err
	The CAN error frame being read.

struct io_can_chan_read	read
	The operation used to read CAN frames.

int	read_errc
	The error code of the last read operation.

size_t	read_errcnt
	The number of errors since the last successful read operation.

int	state
	The current state of the CAN bus.

struct can_msg	write_msg
	The CAN frame being written.

struct io_can_chan_write	write
	The operation used to write CAN frames.

int	write_errc
	The error code of the last write operation.

size_t	write_errcnt
	The number of errors since the last successful write operation.

struct spscring	tx_ring
	The ring buffer used to control the transmit queue.

struct can_msg *	tx_buf
	The transmit queue.

size_t	tx_errcnt
	The number of frames dropped due to the transmit queue being full.

mtx_t	mtx
	The mutex protecting the callbacks, flags and internal CAN network interface.

io_can_net_on_error_func_t *	on_read_error_func
	A pointer to the function invoked when a new CAN frame read error occurs, or when a read operation completes successfully after one or more errors.

void *	on_read_error_arg
	The user-specified argument for on_read_error_func.

io_can_net_on_error_func_t *	on_queue_error_func
	A pointer to the function invoked when a CAN frame is dropped because the transmit queue is full, or when a frame is successfully queued after one or more errors.

void *	on_queue_error_arg
	The user-specified argument for on_queue_error_func.

io_can_net_on_error_func_t *	on_write_error_func
	A pointer to the function invoked when a new CAN frame write error occurs, or when a write operation completes successfully after one or more errors.

void *	on_write_error_arg
	The user-specified argument for on_write_error_func.

io_can_net_on_can_state_func_t *	on_can_state_func
	A pointer to the function to be invoked when a CAN bus state change is detected.

void *	on_can_state_arg
	The user-specified argument for #on_state_func.

io_can_net_on_can_error_func_t *	on_can_error_func
	A pointer to the function to be invoked when an error is detected on the CAN bus.

void *	on_can_error_arg
	The user-specified argument for #on_error_func.

unsigned	started: 1
	A flag indicating wheter the CAN network interface has been started.

unsigned	shutdown: 1
	A flag indicating whether the I/O service has been shut down.

unsigned	wait_next_submitted: 1
	A flag indicating whether wait_next has been submitted to tq.

unsigned	wait_confirm_submitted: 1
	A flag indicating whether wait_confirm has been submitted to tq.

unsigned	read_submitted: 1
	A flag indicating whether read has been submitted to chan.

unsigned	write_submitted: 1
	A flag indicating whether write has been submitted to chan.

can_net_t *	net
	A pointer to the internal CAN network interface.

struct timespec	next
	The time at which the next CAN timer will trigger.

Detailed Description

The implementation of a CAN network interface.

Definition at line 68 of file can_net.c.

The documentation for this struct was generated from the following file:

src/io2/can_net.c

Data Fields

Detailed Description