Technical data

ieef(7D) Devices SunOS 5.5
NAME ieef − Intel EtherExpress Flash32/82596 Ethernet device driver
SYNOPSIS #include <sys/stropts.h>
#include <sys/ethernet.h>
#include <sys/dlpi.h>
AVAILABILITY x86
DESCRIPTION The ieef Ethernet driver is a multi-threaded, loadable, clonable, STREAMS hardware
driver supporting the connectionless Data Link Provider Interface, dlpi(7P), over Intel
EtherExpress Flash32 Ethernet controllers, or the Unisys family of on-motherboard and
add-on ethernet implementationsusing the Intel 82596 network controller. Multiple con-
trollers installed within the system are supported by the driver. The ieef driver provides
basic support for the above mentioned hardware. Functions include hardware initializa-
tion, frame transmit and receive, multicast and “promiscuous” support, and error
recovery and reporting.
The cloning, character-special device /dev/ieef is used to access all EtherExpress
Flash32/82596 devices installed within the system.
ieef and DLPI The ieef driver is a “style 2” Data LinkService provider. All M_PROTO and M_PCPROTO
type messages are interpreted as DLPI primitives. An explicit DL_ATTACH_REQ message
by the user is required to associate the opened stream with a particular device (ppa). The
ppa ID is interpreted as an unsignedlong integer and indicates the corresponding device
instance (unit) number. The unit numbers are assigned sequentially to each board found.
The search order is determined by the order defined in the /kernel/drv/ieef.conf file. 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 this system. The device is initialized on
first attach and de-initialized (stopped) on last detach.
The values returned by the driver in theDL_INFO_ACK primitive in response to the
DL_INFO_REQ from the user are as follows:
The maximum SDU is 1500 (ETHERMTU).
The minimum SDU is 0. The driver will pad to the mandatory 60-octet
minimum packet size.
The dlsap address length is 8.
The MAC type isDL_ETHER.
The sap length value is −2, meaning the physical address component is fol-
lowed immediately by a 2-byte sap component within the DLSAP address.
The service mode is DL_CLDLS.
No optional quality of service (QOS) support is included at present, so the
QOS fields are 0.
The provider style isDL_STYLE2.
The version isDL_VERSION_2.
7D-136 modified 28 Jun 1994