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If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] .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