'\" te
.\"  Copyright (c) 2007, Sun Microsystems, Inc.  All Rights Reserved
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.TH IGB 7D "Jul 20, 2007"
.SH NAME
igb \- Intel 82575 1Gb PCI Express NIC Driver
.SH SYNOPSIS
.LP
.nf
\fB/dev/igb*\fR
.fi

.SH DESCRIPTION
.sp
.LP
The \fBigb\fR Gigabit Ethernet driver is a  multi-threaded,  loadable,
clonable, GLD-based STREAMS driver supporting the Data Link Provider Interface,
\fBdlpi\fR(7P),  on  Intel 82575 Gigabit Ethernet controllers.
.sp
.LP
The \fBigb\fR driver functions include controller  initialization, frame
transmit and receive, promiscuous and multicast support, and error recovery and
reporting.
.sp
.LP
The \fBigb\fR driver and hardware support auto-negotiation, a protocol
specified by the 1000  Base-T  standard.  Auto-negotiation allows each device
to advertise its capabilities and discover those of its peer (link partner).
The highest common  denominator  supported  by  both link  partners  is
automatically  selected,  yielding  the  greatest  available throughput, while
requiring no manual configuration. The \fBigb\fR driver also allows you to
configure the advertised capabilities to less than the maximum (where the full
speed  of  the interface is not required), or to force a specific mode of
operation, irrespective of  the  link  partner's  advertised capabilities.
.SH APPLICATION PROGRAMMING INTERFACE
.sp
.LP
The cloning character-special device, \fB /dev/igb\fR, is used to access all
Intel 82575 Gigabit devices installed within the system.
.sp
.LP
The igb driver is managed  by the \fBdladm\fR(1M) command  line utility, which
allows  VLANs to be defined on top of \fBigb\fR instances and  for \fBigb\fR
instances to be aggregated.  See \fBdladm\fR(1M) for more details.
.sp
.LP
You must send an explicit DL_ATTACH_REQ message to associate the opened stream
with a particular device (PPA). The PPA ID is interpreted as an unsigned
integer data type and  indicates the corresponding device instance (unit)
number. The driver returns an error (DL_ERROR_ACK) 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) at last detach.
.sp
.LP
The values returned by the driver in the DL_INFO_ACK primitive in response to
your DL_INFO_REQ are:
.RS +4
.TP
.ie t \(bu
.el o
Maximum SDU is 9000.
.RE
.RS +4
.TP
.ie t \(bu
.el o
Minimum SDU is 0.
.RE
.RS +4
.TP
.ie t \(bu
.el o
DLSAP address length is 8.
.RE
.RS +4
.TP
.ie t \(bu
.el o
MAC type is DL_ETHER.
.RE
.RS +4
.TP
.ie t \(bu
.el o
SAP (Service Access Point) length value is -2, meaning the physical address
component is followed immediately by a 2-byte SAP component within the DLSAP
address.
.RE
.RS +4
.TP
.ie t \(bu
.el o
Broadcast address value is the Ethernet/IEEE broadcast address
(FF:FF:FF:FF:FF:FF).
.sp
Once in the DL_ATTACHED state, you must send a DL_BIND_REQ to associate a
particular SAP with the stream.
.RE
.SH CONFIGURATION
.sp
.LP
By default, the  igb driver performs auto-negotiation to select the link speed
and mode. Link speed and mode can be any one of the following, (as described
in  the \fIIEEE803.2\fR standard):
.sp
.LP
1000 Mbps, full-duplex.
.sp
.LP
100 Mbps, full-duplex.
.sp
.LP
100 Mbps, half-duplex.
.sp
.LP
10 Mbps, full-duplex.
.sp
.LP
10 Mbps, half-duplex.
.sp
.LP
The auto-negotiation protocol automatically selects speed (1000 Mbps, 100 Mbps,
or 10 Mbps) and operation mode (full-duplex or half-duplex) as the highest
common denominator supported by both link partners.
.sp
.LP
Alternatively, you can set the capabilities advertised by the \fBigb\fR device
using \fBndd\fR(1M). The driver supports a number of parameters whose names
begin with \fIadv_\fR (see below). Each of these parameters contains a boolean
value that determines if the device advertises that mode of operation. For
example,  the \fIadv_1000fdx_cap\fR parameter indicates if 1000M full duplex is
advertised to link partner. The  \fIadv_autoneg\fR cap parameter controls
whether auto-negotiation is performed. If \fIadv_autoneg_cap\fR is set to 0,
the driver forces the mode of operation  selected by the first  non-zero
parameter in priority order as shown below:
.sp
.in +2
.nf
                        (highest priority/greatest throughput)
        adv_1000fdx_cap         1000Mbps full duplex
        adv_100fdx_cap          100Mbps full duplex
        adv_100hdx_cap          100Mbps half duplex
        adv_10fdx_cap           10Mbps full duplex
        adv_10hdx_cap           10Mbps half duplex
                                (lowest priority/least throughput)
.fi
.in -2

.sp
.LP
All capabilities default to enabled. Note that changing any capability
parameter causes the link to go down while the link partners renegotiate the
link speed/duplex using the newly changed capabilities.
.SH FILES
.sp
.ne 2
.na
\fB\fB/dev/igb*\fR\fR
.ad
.RS 27n
Special character device.
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/igb\fR\fR
.ad
.RS 27n
32-bit device driver (x86).
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/amd64/igb\fR\fR
.ad
.RS 27n
64-bit device driver (x86).
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/sparcv9/igb\fR\fR
.ad
.RS 27n
64-bit device driver (SPARC).
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/igb.conf\fR\fR
.ad
.RS 27n
Configuration file.
.RE

.SH SEE ALSO
.sp
.LP
\fBdladm\fR(1M), \fBndd\fR(1M), \fBnetstat\fR(1M), \fBdriver.conf\fR(4),
\fBattributes\fR(5), \fBstreamio\fR(7I), \fBdlpi\fR(7P),
.sp
.LP
\fIWriting Device Drivers\fR
.sp
.LP
\fISTREAMS Programming Guide\fR
.sp
.LP
\fINetwork Interfaces Programmer's Guide\fR