tail head cat sleep
QR code linking to this page
Main index Section 4
Go to:
Options

Manual Pages  — CAS

NAME

cas – Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn Gigabit Ethernet driver

CONTENTS

SYNOPSIS

To compile this driver into the kernel, place the following lines in your kernel configuration file: device miibus device cas

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): 

if_cas_load="YES"

DESCRIPTION

The cas driver provides support for the Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn Gigabit Ethernet controllers found on-board in Sun UltraSPARC machines and as add-on cards.

All controllers supported by the cas driver have TCP/UDP checksum offload capability for both receive and transmit, support for the reception and transmission of extended frames for vlan(4) and an interrupt coalescing/moderation mechanism as well as a 512-bit multicast hash filter.

The cas driver also supports Jumbo Frames (up to 9022 bytes), which can be configured via the interface MTU setting. Selecting an MTU larger than 1500 bytes with the ifconfig(8) utility configures the adapter to receive and transmit Jumbo Frames.

HARDWARE

The chips supported by the cas driver are:

The following add-on cards are known to work with the cas driver at this time:

NOTES

On sparc64 the cas driver respects the local-mac-address? system configuration variable which can be set in the Open Firmware boot monitor using the setenv command or by eeprom(8). If set to "false" (the default), the cas driver will use the system's default MAC address for all of its devices. If set to "true", the unique MAC address of each interface is used if present rather than the system's default MAC address.

Supported interfaces having their own MAC address include on-board versions on boards equipped with more than one Ethernet interface and all add-on cards.

SEE ALSO

altq(4), miibus(4), netintro(4), vlan(4), eeprom(8), ifconfig(8)

HISTORY

The cas device driver appeared in FreeBSD 8.0 and FreeBSD 7.3 . It is named after the cas driver which first appeared in OpenBSD 4.1 and supports the same set of controllers but is otherwise unrelated.

AUTHORS

The cas driver was written by Marius Strobl <Mt marius@FreeBSD.org> based on the gem(4) driver.
CAS (4) March 24, 2012
tail head cat sleep
QR code linking to this page
Main index Section 4
Go to:
Options

Please direct any comments about this manual page service to Ben Bullock. Privacy policy.

“ Today, the Unix equivalent of a power drill would have 20 dials and switches, come with a nonstandard plug, require the user to hand-wind the motor coil, and not accept 3/8" or 7/8" drill bits (though this would be documented in the BUGS section of its instruction manual). ”
— The Unix Haters' handbook