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skfp(7D)			    Devices			      skfp(7D)

NAME
       skfp - SysKonnect FDDI PCI device driver

SYNOPSIS
       /dev/skfp

DESCRIPTION
       The  skfp  FDDI driver is a multi-threaded, loadable, clonable, STREAMS
       hardware driver supporting the connectionless Data Link Provider Inter‐
       face  (DLPI)  over  a  SysKonnect FDDI PCI adapter. The driver supports
       multiple installed SysKonnect FDDI PCI adapters. Functions include chip
       initialization,	frame  transit	and receive, multicast and promiscuous
       support, and error recovery and reporting.

       The skfp driver	supports  all  SysKonnect  SK-NET  FDDI	 PCI  adapters
       (SK-55xx	 (32-bit)  and SK-58xx (64-bit) series) on 32-bit systems, and
       the SK-58xx series on 64-bit systems.

APPLICATION PROGRAMMING INTERFACE
       The skfp driver provides the /dev/skfp cloning character-special device
       that  accesses  all  SK-NET  FDDI  PCI adapters using Data Link Service
       (DLS) Style 2. It also provides per-adapter  character-special  devices
       /dev/skfpx, (where x represents the device instance number) that access
       a special NIC using DLS Style 1.

   skfp and DLPI
       The skfp driver is a Style 1 and Style 2 DLS provider. All M_PROTO  and
       M_PCPROTO type messages are interpreted as DLPI	primitives. Valid DLPI
       primitives are defined in <sys/dlpi.h>. See dlpi(7P).

       An explicit DL_ATTACH_REQ message by the user is required to  associate
       the  opened  Stream with a particular device (ppa). This is unnecessary
       and invalid for DLPI Style 1. The ppa ID is interpreted as an  unsigned
       long  data  type and indicates the corresponding device instance (unit)
       number. An error (DL_ERROR_ACK) is returned by the driver  if  the  ppa
       field  value  does not correspond to a valid device instance number for
       the system.

       The device is initialized on first attach and de-initialized  (stopped)
       upon  last  detach.  Valid device numbers for all detected adapters are
       displayed on the console at driver startup  time	 and  written  to  the
       /var/adm/messages log file.

       The  values  returned  in  the DL_INFO_ACK primitive in response to the
       DL_INFO_REQ request are:

	 ·  Maximum SDU is 4470.

	 ·  Minimum SDU is 0.

	 ·  DSLAP address length is 8 bytes.

	 ·  MAC type is DL_FDDI.

	 ·   SAP length value is -2, meaning the physical address component is
	    followed  immediately  by  a 2-byte SAP component within the DLSAP
	    address.

	 ·  Service mode is DL_CLDLS.

	 ·  Optional quality of service (QOS) support is not  included;	 as  a
	    result, the QOS field values are 0.

	 ·  Provider style is DL_STYLE2.

	 ·  Version is DL_VERSION_2.

OPTIONS
       Options	are  not required for normal operation. In special cases, FDDI
       Station Management (SMT)	 parameters  can  be  modified	by  using  the
       /usr/bin/smtpara	 utility  (see	the  driver README files). The smtpara
       utility should be used only by those very familiar with FDDI.

 DIAGNOSTICS
       If multiple NICs are installed in the system, the following message may
       appear on the console and in the	 /var/adm/messages log file:

	      skfp: DMA memory allocation failed !

       You  can	 avoid this message by tuning the lomempages kernel parameter.
       By default, the value of this parameter is 36 pages. Each  SK-FDDI  PCI
       adapter	requires  nine	pages, so increase the value of the lomempages
       parameter in increments of nine pages until all NICs in the system  run
       correctly.

       To  modify  the value of this parameter to 45 pages, you can, for exam‐
       ple, append the set lomempages=45 line  to  the	/etc/system  file  and
       reboot the system.

FILES
       /dev/skfp		       Character special device

       /dev/skfpx		       Per-adapter  character  special device,
				       where x is the adapter ppa

       /kernel/drv/skfp		       ELF kernel module

       /kernel/drv/skfp.conf	       Driver configuration file

       /usr/bin/smtpara		       SMT parameter utility

       /etc/fddi.cfg		       smtpara configuration file

       <sys/dlpi.h>		       DLPI definitions

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       │Architecture		     │IA, SPARC			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       ifconfig(1M), netstat(1M), attributes(5), dlpi(7P)

       skfp.txt README file — Included in the driver package or available from
       www.syskonnect.com.

 SunOS 5.10			  17 May 2003			      skfp(7D)
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