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6 .TH IGB 7D "Jul 20, 2007"
8 igb \- Intel 82575 1Gb PCI Express NIC Driver
18 The \fBigb\fR Gigabit Ethernet driver is a multi-threaded, loadable,
19 clonable, GLD-based STREAMS driver supporting the Data Link Provider Interface,
20 \fBdlpi\fR(7P), on Intel 82575 Gigabit Ethernet controllers.
23 The \fBigb\fR driver functions include controller initialization, frame
24 transmit and receive, promiscuous and multicast support, and error recovery and
28 The \fBigb\fR driver and hardware support auto-negotiation, a protocol
29 specified by the 1000 Base-T standard. Auto-negotiation allows each device
30 to advertise its capabilities and discover those of its peer (link partner).
31 The highest common denominator supported by both link partners is
32 automatically selected, yielding the greatest available throughput, while
33 requiring no manual configuration. The \fBigb\fR driver also allows you to
34 configure the advertised capabilities to less than the maximum (where the full
35 speed of the interface is not required), or to force a specific mode of
36 operation, irrespective of the link partner's advertised capabilities.
37 .SH APPLICATION PROGRAMMING INTERFACE
40 The cloning character-special device, \fB /dev/igb\fR, is used to access all
41 Intel 82575 Gigabit devices installed within the system.
44 The igb driver is managed by the \fBdladm\fR(8) command line utility, which
45 allows VLANs to be defined on top of \fBigb\fR instances and for \fBigb\fR
46 instances to be aggregated. See \fBdladm\fR(8) for more details.
49 You must send an explicit DL_ATTACH_REQ message to associate the opened stream
50 with a particular device (PPA). The PPA ID is interpreted as an unsigned
51 integer data type and indicates the corresponding device instance (unit)
52 number. The driver returns an error (DL_ERROR_ACK) if the PPA field value does
53 not correspond to a valid device instance number for the system. The device is
54 initialized on first attach and de-initialized (stopped) at last detach.
57 The values returned by the driver in the DL_INFO_ACK primitive in response to
75 DLSAP address length is 8.
87 SAP (Service Access Point) length value is -2, meaning the physical address
88 component is followed immediately by a 2-byte SAP component within the DLSAP
95 Broadcast address value is the Ethernet/IEEE broadcast address
98 Once in the DL_ATTACHED state, you must send a DL_BIND_REQ to associate a
99 particular SAP with the stream.
104 By default, the igb driver performs auto-negotiation to select the link speed
105 and mode. Link speed and mode can be any one of the following, (as described
106 in the \fIIEEE803.2\fR standard):
109 1000 Mbps, full-duplex.
112 100 Mbps, full-duplex.
115 100 Mbps, half-duplex.
118 10 Mbps, full-duplex.
121 10 Mbps, half-duplex.
124 The auto-negotiation protocol automatically selects speed (1000 Mbps, 100 Mbps,
125 or 10 Mbps) and operation mode (full-duplex or half-duplex) as the highest
126 common denominator supported by both link partners.
129 Alternatively, you can set the capabilities advertised by the \fBigb\fR device
130 using \fBndd\fR(8). The driver supports a number of parameters whose names
131 begin with \fIadv_\fR (see below). Each of these parameters contains a boolean
132 value that determines if the device advertises that mode of operation. For
133 example, the \fIadv_1000fdx_cap\fR parameter indicates if 1000M full duplex is
134 advertised to link partner. The \fIadv_autoneg\fR cap parameter controls
135 whether auto-negotiation is performed. If \fIadv_autoneg_cap\fR is set to 0,
136 the driver forces the mode of operation selected by the first non-zero
137 parameter in priority order as shown below:
141 (highest priority/greatest throughput)
142 adv_1000fdx_cap 1000Mbps full duplex
143 adv_100fdx_cap 100Mbps full duplex
144 adv_100hdx_cap 100Mbps half duplex
145 adv_10fdx_cap 10Mbps full duplex
146 adv_10hdx_cap 10Mbps half duplex
147 (lowest priority/least throughput)
153 All capabilities default to enabled. Note that changing any capability
154 parameter causes the link to go down while the link partners renegotiate the
155 link speed/duplex using the newly changed capabilities.
160 \fB\fB/dev/igb*\fR\fR
163 Special character device.
169 \fB\fB/kernel/drv/igb\fR\fR
172 32-bit device driver (x86).
178 \fB\fB/kernel/drv/amd64/igb\fR\fR
181 64-bit device driver (x86).
187 \fB\fB/kernel/drv/sparcv9/igb\fR\fR
190 64-bit device driver (SPARC).
196 \fB\fB/kernel/drv/igb.conf\fR\fR
205 \fBdladm\fR(8), \fBndd\fR(8), \fBnetstat\fR(8), \fBdriver.conf\fR(4),
206 \fBattributes\fR(5), \fBstreamio\fR(7I), \fBdlpi\fR(7P),
209 \fIWriting Device Drivers\fR
212 \fISTREAMS Programming Guide\fR
215 \fINetwork Interfaces Programmer's Guide\fR