strqset(9F) Kernel Functions for Drivers strqset(9F)
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
strqset() 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
strqset() can be called from user or interrupt 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.
SunOS 5.10 17 Oct 2000 strqset(9F)
