NTXN(4D) NTXN(4D)


NAME


ntxn - NetXen 10/1 Gigabit Ethernet network driver

SYNOPSIS


/dev/ntxn*


DESCRIPTION


The ntxn 10/1 Gigabit Ethernet driver is a multi-threaded, loadable,
clonable, GLD-based STREAMS driver supporting the Data Link Provider
Interface, dlpi(4P), on NetXen 10/1 Gigabit Ethernet controllers.


The ntxn driver functions include chip initialization, frames transmit
and receive, promiscuous and multicast support, TCP and UDP checksum off-
load (IPv4) and 9600 bytes jumbo frame.


The ntxn driver and hardware support the 10GBASE CX4, 10GBASE-SR/W, LR/W,
and 10/100/1000BASE-T physical layers.

APPLICATION PROGRAMMING INTERFACE


The cloning character-special device, /dev/ntxn, is used to access all
NetXen devices installed within the system.


The ntxn driver is managed by the dladm(8) command line utility, which
allows VLANs to be defined on top of ntxn instances and for ntxn
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 your DL_INFO_REQ are:

o Maximum SDU is 9600.

o Minimum SDU is 0.

o DLSAP address length is 8.

o MAC type is DL_ETHER.

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.

o Broadcast address value is the Ethernet/IEEE broadcast address
(FF:FF:FF:FF:FF:FF).

CONFIGURATION


By default, the ntxn driver works without any configuration file.

FILES


/dev/ntxn*
Special character device.


/kernel/drv/ntxn
32-bit device driver (x86).


/kernel/drv/amd64/ntxn
64-bit device driver (x86).


/kernel/drv/ntxn.conf
Configuration file.


ATTRIBUTES


See attributes(7) for descriptions of the following attributes:


+--------------------------------------+
|ATTRIBUTE TYPE ATTRIBUTE VALUE |
|Architecture x86 |
|Interface Stability Committed |
+--------------------------------------+

SEE ALSO


streamio(4I), dlpi(4P), driver.conf(5), attributes(7), dladm(8), ndd(8),
netstat(8)


Writing Device Drivers


STREAMS Programming Guide


Network Interfaces Programmer's Guide


October 13, 2008 NTXN(4D)