sunos man page for strqset

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)