fmodsw(9s) [opensolaris man page]

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

NAME

       fmodsw - STREAMS module declaration structure

SYNOPSIS

       #include <sys/stream.h>
       #include <sys/conf.h>

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI)

DESCRIPTION

       The fmodsw structure contains information for STREAMS modules. All STREAMS modules must define a fmodsw structure.

       f_name  must match mi_idname in the module_info structure. See module_info(9S). f_name should also match the module binary name. (See WARN-
       INGS.)

       All modules must set the f_flag to D_MP to indicate that they safely allow multiple threads of execution. See mt-streams(9F) for additional
       flags.

STRUCTURE MEMBERS

	 char		   f_name[FMNAMESZ + 1];   /* module name */
	 struct streamtab  *f_str;		   /* streams information */
	 int		   f_flag;		   /* flags */

SEE ALSO

       mt-streams(9F), modlstrmod(9S), module_info(9S)

       STREAMS Programming Guide

WARNINGS

       If f_name does not match the module binary name, unexpected failures can occur.

SunOS 5.11							    14 Nov 2002 							fmodsw(9S)

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 5.10							    26 Nov 2002 						   module_info(9S)