NAME¶
glxsb
—
Geode LX Security Block crypto accelerator
SYNOPSIS¶
To compile this driver into the kernel, place the following lines in your kernel
configuration file:
device crypto
device glxsb
Alternatively, to load the driver as a module at boot time, place the following
line in
loader.conf(5):
DESCRIPTION¶
The
glxsb
driver supports the security block
of the Geode LX series processors. The Geode LX is a member of the AMD Geode
family of integrated x86 system chips.
Driven by periodic checks for available data from the generator,
glxsb
supplies entropy to the
random(4) driver for common usage.
glxsb
also supports acceleration of
AES-128-CBC operations for
crypto(4). It also
registers itself to accelerate other HMAC algorithms, although there is no
hardware acceleration for those algorithms. This is only needed so
glxsb
can work with
ipsec(4).
CAVEAT¶
The
crypto(9) framework will fail to open the
crypto session on the device if the AES key's length is != 128 bits. This
prevents the use of the
glxsb
device driver
with AES keys of length != 128 bits.
SEE ALSO¶
crypto(4),
intro(4),
pci(4),
ipsec(4),
random(4),
crypto(9)
HISTORY¶
The
glxsb
device driver first appeared in
OpenBSD 4.1. The
glxsb
device driver was imported into
FreeBSD 7.1.
AUTHORS¶
The
glxsb
device driver was written for
OpenBSD by
Tom
Cosgrove. It was ported to
FreeBSD by
Patrick Lamaiziere
⟨patfbsd@davenulle.org⟩.