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STRQSET(9F)							   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
       The strqset() function gives drivers and modules a way to change infor‐
       mation  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.

				 Jan 16, 2006			   STRQSET(9F)

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