ethernet.c File Reference

---

Detailed Description

Ethernet-over-EtherCAT (EoE).

Definition in file ethernet.c.

Go to the source code of this file.

Defines
#define	EOE_DEBUG_LEVEL   0
	Defines the debug level of EoE processing.
Functions
void	ec_eoe_flush (ec_eoe_t *eoe)
	Empties the transmit queue.
void	ec_eoe_state_rx_start (ec_eoe_t *eoe)
	State: RX_START.
void	ec_eoe_state_rx_check (ec_eoe_t *eoe)
	State: RX_CHECK.
void	ec_eoe_state_rx_fetch (ec_eoe_t *eoe)
	State: RX_FETCH.
void	ec_eoe_state_tx_start (ec_eoe_t *eoe)
	State: TX START.
void	ec_eoe_state_tx_sent (ec_eoe_t *eoe)
	State: TX SENT.
int	ec_eoedev_open (struct net_device *dev)
	Opens the virtual network device.
int	ec_eoedev_stop (struct net_device *dev)
	Stops the virtual network device.
int	ec_eoedev_tx (struct sk_buff *skb,struct net_device *dev)
	Transmits data via the virtual network device.
net_device_stats *	ec_eoedev_stats (struct net_device *dev)
	Gets statistics about the virtual network device.
int	ec_eoe_init (ec_eoe_t *eoe)
	EoE constructor.
void	ec_eoe_clear (ec_eoe_t *eoe)
	EoE destructor.
int	ec_eoe_send (ec_eoe_t *eoe)
	Sends a frame or the next fragment.
void	ec_eoe_run (ec_eoe_t *eoe)
	Runs the EoE state machine.
unsigned int	ec_eoe_active (const ec_eoe_t *eoe)
	Returns the state of the device.
void	ec_eoe_print (const ec_eoe_t *eoe)
	Prints EoE handler information.

---

Define Documentation

#define EOE_DEBUG_LEVEL   0

Defines the debug level of EoE processing. 0 = No debug messages. 1 = Output actions. 2 = Output actions and frame data. Definition at line 59 of file ethernet.c.

---

Function Documentation

void ec_eoe_flush (  ec_eoe_t *   )

Empties the transmit queue. Parameters: eoe  EoE handler Definition at line 182 of file ethernet.c.

void ec_eoe_state_rx_start (  ec_eoe_t *  eoe  )

State: RX_START. Starts a new receiving sequence by queueing a datagram that checks the slave's mailbox for a new EoE datagram. Parameters: eoe  EoE handler Definition at line 321 of file ethernet.c.

void ec_eoe_state_rx_check (  ec_eoe_t *  eoe  )

State: RX_CHECK. Processes the checking datagram sent in RX_START and issues a receive datagram, if new data is available. Parameters: eoe  EoE handler Definition at line 339 of file ethernet.c.

void ec_eoe_state_rx_fetch (  ec_eoe_t *  eoe  )

State: RX_FETCH. Checks if the requested data of RX_CHECK was received and processes the EoE datagram. Parameters: eoe  EoE handler Definition at line 365 of file ethernet.c.

void ec_eoe_state_tx_start (  ec_eoe_t *  eoe  )

State: TX START. Starts a new transmit sequence. If no data is available, a new receive sequence is started instead. Parameters: eoe  EoE handler Definition at line 508 of file ethernet.c.

void ec_eoe_state_tx_sent (  ec_eoe_t *  eoe  )

State: TX SENT. Checks is the previous transmit datagram succeded and sends the next fragment, if necessary. Parameters: eoe  EoE handler Definition at line 571 of file ethernet.c.

int ec_eoedev_open (  struct net_device *   )

Opens the virtual network device. Parameters: dev  EoE net_device Definition at line 613 of file ethernet.c.

int ec_eoedev_stop (  struct net_device *   )

Stops the virtual network device. Parameters: dev  EoE net_device Definition at line 636 of file ethernet.c.

int ec_eoedev_tx (  struct sk_buff *  , struct net_device *  )

Transmits data via the virtual network device. Parameters: skb  transmit socket buffer dev  EoE net_device Definition at line 659 of file ethernet.c.

struct net_device_stats * ec_eoedev_stats (  struct net_device *   )

Gets statistics about the virtual network device. Parameters: dev  EoE net_device Definition at line 709 of file ethernet.c.

int ec_eoe_init (  ec_eoe_t *  eoe  )

EoE constructor. Initializes the EoE handler, creates a net_device and registeres it. Parameters: eoe  EoE handler Definition at line 85 of file ethernet.c.

void ec_eoe_clear (  ec_eoe_t *  eoe  )

EoE destructor. Unregisteres the net_device and frees allocated memory. Parameters: eoe  EoE handler Definition at line 156 of file ethernet.c.

int ec_eoe_send (  ec_eoe_t *  eoe  )

Sends a frame or the next fragment. Parameters: eoe  EoE handler Definition at line 204 of file ethernet.c.

void ec_eoe_run (  ec_eoe_t *  eoe  )

Runs the EoE state machine. Parameters: eoe  EoE handler Definition at line 275 of file ethernet.c.

unsigned int ec_eoe_active (  const ec_eoe_t *  eoe  )

Returns the state of the device. Returns: 1 if the device is "up", 0 if it is "down" Parameters: eoe  EoE handler Definition at line 290 of file ethernet.c.

void ec_eoe_print (  const ec_eoe_t *  eoe  )

Prints EoE handler information. Parameters: eoe  EoE handler Definition at line 301 of file ethernet.c.

---