Content-type: text/html Man page of strqset

strqset

Section: Kernel Functions for Drivers (9F)
Updated: 16 Jan 2006
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NAME

strqset - change information about a queue or band of the queue  

SYNOPSIS

#include <sys/stream.h>

int strqset(queue_t *q, qfields_t what, unsigned char pri, intptr_t val);  

INTERFACE LEVEL

Architecture independent level 1 (DDI/DKI).  

PARAMETERS

q Pointer to the queue.

what Field of the queue structure (or the specified priority band) to return information about. Valid values are one of:

QHIWAT High water mark.

QLOWAT Low water mark.

QMAXPSZ Largest packet accepted.

QMINPSZ Smallest packet accepted.

pri Priority band of interest.

val The value for the field to be changed.

 

DESCRIPTION

The strqset() function gives drivers and modules a way to change information about a queue or a particular band of a queue without directly accessing STREAMS data structures.  

RETURN VALUES

On success, 0 is returned. EINVAL is returned if an undefined attribute is specified.  

CONTEXT

The strqset() function can be called from user, interrupt, or kernel context.  

SEE ALSO

strqget(9F), queue(9S)

Writing Device Drivers

STREAMS Programming Guide  

NOTES

When lowering existing values, set QMINPSZ before setting QMAXPSZ; when raising existing values, set QMAXPSZ before setting QMINPSZ.


 

Index

NAME
SYNOPSIS
INTERFACE LEVEL
PARAMETERS
DESCRIPTION
RETURN VALUES
CONTEXT
SEE ALSO
NOTES

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Time: 02:39:36 GMT, October 02, 2010