1strqset(9F)              Kernel Functions for Drivers              strqset(9F)
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NAME

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

9       #include <sys/stream.h>
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13       int strqset(queue_t *q, qfields_t what, unsigned char pri, intptr_t val);
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INTERFACE LEVEL

17       Architecture independent level 1 (DDI/DKI).
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PARAMETERS

20       q       Pointer to the queue.
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23       what    Field  of  the queue structure (or the specified priority band)
24               to return information about. Valid values are one of:
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26               QHIWAT     High water mark.
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29               QLOWAT     Low water mark.
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32               QMAXPSZ    Largest packet accepted.
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35               QMINPSZ    Smallest packet accepted.
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39       pri     Priority band of interest.
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42       val     The value for the field to be changed.
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DESCRIPTION

46       The strqset() function gives drivers and modules a way to change infor‐
47       mation  about  a queue or a particular band of a queue without directly
48       accessing STREAMS data structures.
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RETURN VALUES

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

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

59       strqget(9F), queue(9S)
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62       Writing Device Drivers
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65       STREAMS Programming Guide
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NOTES

68       When lowering existing values, set QMINPSZ before setting QMAXPSZ; when
69       raising existing values, set QMAXPSZ before setting QMINPSZ.
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73SunOS 5.11                        16 Jan 2006                      strqset(9F)