opensolaris man page for module_info

module_info(9S) 					    Data Structures for Drivers 					   module_info(9S)

NAME
       module_info - STREAMS driver identification and limit value structure

SYNOPSIS
       #include <sys/stream.h>

INTERFACE LEVEL
       Architecture independent level 1 (DDI/DKI).

DESCRIPTION
       When  a module or driver is declared, several identification and limit values can be set. These values are stored in the module_info struc-
       ture.

       The module_info structure is intended to be read-only. However, the flow control limits (mi_hiwat and mi_lowat) and the packet size  limits
       (mi_minpsz and mi_maxpsz) are copied to the QUEUE structure, where they can be modified.

       For  a  driver,	mi_idname  must match the name of the driver binary file. For a module, mi_idname must match the fname field of the fmodsw
       structure. See fmodsw(9S) for details.

STRUCTURE MEMBERS
	 ushort_t      mi_idnum;      /* module ID number */
	 char	       *mi_idname;    /* module name */
	 ssize_t       mi_minpsz;     /* minimum packet size */
	 ssize_t       mi_maxpsz;     /* maximum packet size */
	 size_t        mi_hiwat;      /* high water mark */
	 size_t        mi_lowat;      /* low water mark */

       The constant FMNAMESZ, limiting the length of a module's name, is set to eight in this release.

SEE ALSO
       fmodsw(9S), queue(9S)

       STREAMS Programming Guide

SunOS 5.11							    26 Nov 2002 						   module_info(9S)