rtk/nicdrv.h File Reference

Headerfile for nicdrv.c. More...

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Classes
struct	ec_stackT
struct	ecx_portt
struct	ecx_redportt

Functions
void	ec_setupheader (void *p)
int	ecx_closenic (ecx_portt *port)
int	ecx_getindex (ecx_portt *port)
int	ecx_outframe (ecx_portt *port, int idx, int sock)
int	ecx_outframe_red (ecx_portt *port, int idx)
void	ecx_setbufstat (ecx_portt *port, int idx, int bufstat)
int	ecx_setupnic (ecx_portt *port, const char *ifname, int secondary)
int	ecx_srconfirm (ecx_portt *port, int idx, int timeout)
int	ecx_waitinframe (ecx_portt *port, int idx, int timeout)

Variables
const uint16	priMAC [3]
const uint16	secMAC [3]

Detailed Description

Headerfile for nicdrv.c.

Definition in file rtk/nicdrv.h.

Function Documentation

void ec_setupheader

(

void *

p

)

Fill buffer with ethernet header structure. Destination MAC is allways broadcast. Ethertype is allways ETH_P_ECAT.

Parameters

[out]

p

= buffer

Definition at line 222 of file linux/nicdrv.c.

int ecx_closenic

(

ecx_portt *

port

)

Close sockets used

Parameters

[in]

port

= port context struct

Returns

0

Definition at line 207 of file linux/nicdrv.c.

int ecx_getindex

(

ecx_portt *

port

)

Get new frame identifier index and allocate corresponding rx buffer.

Parameters

[in]

port

= port context struct

Returns

new index.

Definition at line 239 of file linux/nicdrv.c.

int ecx_outframe	(	ecx_portt *	port,
		int	idx,
		int	stacknumber
	)

Transmit buffer over socket (non blocking).

Parameters

[in]	port	= port context struct
[in]	idx	= index in tx buffer array
[in]	stacknumber	= 0=Primary 1=Secondary stack

Returns

socket send result

Definition at line 291 of file linux/nicdrv.c.

int ecx_outframe_red	(	ecx_portt *	port,
		int	idx
	)

Transmit buffer over socket (non blocking).

Parameters

[in]	port	= port context struct
[in]	idx	= index in tx buffer array

Returns

socket send result

Definition at line 316 of file linux/nicdrv.c.

void ecx_setbufstat	(	ecx_portt *	port,
		int	idx,
		int	bufstat
	)

Set rx buffer status.

Parameters

[in]	port	= port context struct
[in]	idx	= index in buffer array
[in]	bufstat	= status to set

Definition at line 278 of file linux/nicdrv.c.

int ecx_setupnic	(	ecx_portt *	port,
		const char *	ifname,
		int	secondary
	)

Basic setup to connect NIC to socket.

Parameters

[in]	port	= port context struct
[in]	ifname	= Name of NIC device, f.e. "eth0"
[in]	secondary	= if >0 then use secondary stack instead of primary

Returns

>0 if succeeded

Definition at line 116 of file linux/nicdrv.c.

int ecx_srconfirm	(	ecx_portt *	port,
		int	idx,
		int	timeout
	)

Blocking send and recieve frame function. Used for non processdata frames. A datagram is build into a frame and transmitted via this function. It waits for an answer and returns the workcounter. The function retries if time is left and the result is WKC=0 or no frame received.

The function calls ec_outframe_red() and ec_waitinframe_red().

Parameters

[in]	port	= port context struct
[in]	idx	= index of frame
[in]	timeout	= timeout in us

Returns

Workcounter or EC_NOFRAME

Definition at line 592 of file linux/nicdrv.c.

int ecx_waitinframe	(	ecx_portt *	port,
		int	idx,
		int	timeout
	)

Blocking receive frame function. Calls ec_waitinframe_red().

Parameters

[in]	port	= port context struct
[in]	idx	= requested index of frame
[in]	timeout	= timeout in us

Returns

Workcounter if a frame is found with corresponding index, otherwise EC_NOFRAME.

Definition at line 564 of file linux/nicdrv.c.

Variable Documentation

const uint16 priMAC[3]

Primary source MAC address used for EtherCAT. This address is not the MAC address used from the NIC. EtherCAT does not care about MAC addressing, but it is used here to differentiate the route the packet traverses through the EtherCAT segment. This is needed to find out the packet flow in redundant configurations.

Primary source MAC address used for EtherCAT. This address is not the MAC address used from the NIC. EtherCAT does not care about MAC addressing, but it is used here to differentiate the route the packet traverses through the EtherCAT segment. This is needed to fund out the packet flow in redundant confihurations.

Definition at line 101 of file linux/nicdrv.c.

const uint16 secMAC[3]

Secondary source MAC address used for EtherCAT.

Definition at line 103 of file linux/nicdrv.c.