rge - Realtek Gigabit/Fast Ethernet Network Adapter driver




The rge Gigabit/Fast Ethernet driver is a multi-threaded, loadable,
clonable, GLD-based STREAMS driver supporting the Data Link Provider
Interface, dlpi(4P), on the Realtek Gigabit/Fast Ethernet Network

The rge driver functions includes controller initialization, frame
transmit and receive, promiscuous and multicast support, and error
recovery and reporting.


The cloning, character-special device /dev/rge is used to access all
Realtek Gigabit/Fast Ethernet devices installed within the system.

The rge driver is managed by the dladm(8) command line utility, which
allows VLANs to be defined on top of rge instances and for rge instances
to be aggregated. See dladm(8) for more details.

The values returned by the driver in the DL_INFO_ACK primitive in
response to the DL_INFO_REQ are as follows:

o Maximum SDU (with jumbo frame) is 7000.

o Minimum SDU is 0.

o DSLAP address length is 8 bytes.

o MAC type is DL_ETHER.

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

o Broadcast address value is Ethernet/IEEE broadcast address

Once in the DL_ATTACHED state, you must send a DL_BIND_REQ to associate a
particular Service Access Point (SAP) with the stream.


By default, the rge driver performs auto-negotiation to select the link
speed and mode. Link speed and mode can be any one of the following:

o 1000 Mbps, full-duplex

o 100 Mbps, full-duplex

o 100 Mbps, half-duplex

o 10 Mbps, full-duplex

o 10 Mbps, half-duplex

Alternatively, you can set the capabilities advertised by the rge device
using ndd(8). The driver supports a number of parameters whose names
begin with adv_. Each of these parameters contains a boolean value that
determines if the device advertises that mode of operation. The
adv_pause_cap indicates if half/full duplex pause is advertised to link
partner. You can set adv_asym_pause_cap to advertise to the link partner
that asymmetric pause is desired.

For example, to prevent the device 'rge2' from advertising gigabit
capabilities, enter (as super-user):

# ndd -set /dev/rge2 adv_1000fdx_cap 0

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.

You can find the current parameter settings by using ndd -get. In
addition, the driver exports the current state, speed, duplex setting,
and working mode of the link via ndd parameters (these are read only and
may not be changed). For example, to check link state of device rge0:

# ndd -get /dev/rge0 link_status
# ndd -get /dev/rge0 link_speed
# ndd -get /dev/rge0 link_duplex

The output above indicates that the link is up and running at 100Mbps
full-duplex. In addition, the driver exports its working mode by
loop_mode. If it is set to 0, the loopback mode is disabled.


Character special device.

32-bit x86 rge driver binary.

64-bit x86 rge driver binary.

SPARC rge driver binary.


See attributes(7) for a description of the following attributes:

|Architecture | SPARC, x86 |


streamio(4I), dlpi(4P), attributes(7), dladm(8)

Writing Device Drivers

STREAMS Programming Guide

Network Interfaces Programmer's Guide

December 21, 2007 RGE(4D)