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GLAST/LAT > DAQ and FSW > FSW > Doxygen Index > EDS / V2-10-0

Constituent: ebfio     Tag: mv2304

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LCBV.h File Reference

LCB Virtual Device, interface. More...

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Typedefs
typedef enum _LCBV_PKT_FATE_M	LCBV_PKT_FATE_M
	Typedef for enum _LCBV_PKT_FATE_M.
typedef unsigned int(*	LCBV_pktCb )(void *prm, unsigned int dsc, EBF_pkt *pkt)
	Typedef for LCBV packet handling callback routine.
typedef unsigned int(*	LCBV_pktsRngFreeCb )(void *prm, EBF_pkt *from, EBF_pkt *to)
	Callback signature to free the exclusive range of EBF packets from to to.
Enumerations
enum	_LCBV_PKT_FATE_M {   LCBV_PKT_FATE_M_NO_MORE = (1 << 0),   LCBV_PKT_FATE_M_NO_FREE = (1 << 2),   LCBV_PKT_FATE_M_NO_PROCESS = (1 << 3),   LCBV_PKT_FATE_M_PAUSE = (1 << 4),   LCBV_PKT_FATE_M_IOERR = (1 << 5),   LCBV_PKT_FATE_M_ABORT,   LCBV_PKT_FATE_M_EOF = (1 << 31) }
	Bit masks defining the options available on the return values of the packet callback routine. More...

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Detailed Description

LCB Virtual Device, interface.

Author:

JJRussell - russell@slac.stanford.edu

   CVS $Id: LCBV.h,v 1.4 2007/02/14 01:01:53 russell Exp $

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Typedef Documentation

LCBV_PKT_FATE_M

Typedef for enum _LCBV_PKT_FATE_M.

Usage

The user can control the packets processing loop in packet handler by specifying the return value as a bit list of the options enumerated here. The most common values will be 0, just keep on keeping on or LCBD_PKT_FATE_M_NO_MORE to stop the stream.

unsigned int(* LCBV_pktCb)(void *prm, unsigned int dsc, EBF_pkt *pkt)

Typedef for LCBV packet handling callback routine.

Returns:

A bit list of options enumerated by LCBV_PKT_FATE_M

Parameters:

	prm	User provided parameter
	dsc	The event descriptor as an uninterpreted unsigned int. Likely the only thing valuable in here is the status.
	pkt	Pointer to the packet data. This contains the length of the packet as well as the data itself

Usage

This is the user callback routine to handle packets.

Return Options

Normally this routine should return 0, but for testing and debugging purposes, it may return a bit list of the options enumerated in LCBV_PKT_FATE_M. The options currently include

• LCBV_PKT_FATE_M_NO_MORE, stop servicing the packets, whether it is empty or not

unsigned int(* LCBV_pktsRngFreeCb)(void *prm, EBF_pkt *from, EBF_pkt *to)

Callback signature to free the exclusive range of EBF packets from to to.

Parameters:

	prm	Arbitrary user parameter, but likely the LCB device handle
	from	The address to start the free at.
	to	The address of the last event to free

What's freed

The memory from from to to is freed.

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Enumeration Type Documentation

enum _LCBV_PKT_FATE_M

Bit masks defining the options available on the return values of the packet callback routine.

See also:

EBF_pkt_cb

Enumerator:

LCBV_PKT_FATE_M_NO_MORE	Stop processing transactions
LCBV_PKT_FATE_M_NO_FREE	Don't free the event
LCBV_PKT_FATE_M_NO_PROCESS	Don't process the event, applicable only for error handler
LCBV_PKT_FATE_M_PAUSE	Pause the processing
LCBV_PKT_FATE_M_IOERR	IO error
LCBV_PKT_FATE_M_ABORT	Convenience symbol, since this is the most common return value from the error routine
LCBV_PKT_FATE_M_EOF	No more packets

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