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QAT(4)		       FreeBSD Kernel Interfaces Manual			QAT(4)

NAME
     qat -- Intel QuickAssist Technology (QAT) driver

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

	   device crypto
	   device cryptodev
	   device qat

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

	   qat_load="YES"
	   qat_c2xxxfw_load="YES"
	   qat_c3xxxfw_load="YES"
	   qat_c62xfw_load="YES"
	   qat_d15xxfw_load="YES"
	   qat_dh895xccfw_load="YES"

DESCRIPTION
     The qat driver implements crypto(4) support for some of the cryptographic
     acceleration functions of the Intel QuickAssist (QAT) device.  The	qat
     driver supports the QAT devices integrated	with Atom C2000	and C3000 and
     Xeon C620 and D-1500 platforms, and the Intel QAT Adapter 8950.  Other
     platforms and adapters not	listed here may	also be	supported.  QAT	de-
     vices are enumerated through PCIe and are thus visible in pciconf(8) out-
     put.

     The qat driver can	accelerate AES in CBC, CTR, XTS	(except	for the	C2000)
     and GCM modes, and	can perform authenticated encryption combining the
     CBC, CTR and XTS modes with SHA1-HMAC and SHA2-HMAC.  The qat driver can
     also compute SHA1 and SHA2	digests.  The implementation of	AES-GCM	has a
     firmware-imposed constraint that the length of any	additional authenti-
     cated data	(AAD) must not exceed 240 bytes.  The driver thus rejects
     crypto(9) requests	that do	not satisfy this constraint.

SEE ALSO
     crypto(4),	ipsec(4), pci(4), random(4), crypto(7),	crypto(9)

HISTORY
     The qat driver first appeared in FreeBSD 13.0.

AUTHORS
     The qat driver was	written	for NetBSD by Hikaru Abe <hikaru@iij.ad.jp>
     and ported	to FreeBSD by
     Mark Johnston <markj@FreeBSD.org>.

BUGS
     Some Atom C2000 QAT devices have two acceleration engines instead of one.
     The qat driver currently misbehaves when both are enabled and thus	does
     not enable	the second acceleration	engine if one is present.

FreeBSD	13.0		       January 27, 2021			  FreeBSD 13.0

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS | BUGS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=qat&manpath=FreeBSD+13.0-RELEASE+and+Ports>

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