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QAT_C2XXX(4) Kernel Interfaces Manual QAT_C2XXX(4) NAME qat_c2xxx -- Intel QuickAssist Technology (QAT) driver for Atom C2000 chipsets 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_c2xxx_load="YES" qat_c2xxxfw_load="YES" DESCRIPTION The qat_c2xxx driver implements crypto(4) support for some of the cryp- tographic acceleration functions of the Intel QuickAssist (QAT) device found on Atom C2000 devices. QAT devices are enumerated through PCIe and are thus visible in pciconf(8) output. The qat_c2xxx driver can accelerate AES in CBC, CTR, and GCM modes, and can perform authenticated encryption combining the CBC, and CTR modes with SHA1-HMAC and SHA2-HMAC. The qat_c2xxx driver can also compute SHA1 and SHA2 digests. The implementation of AES-GCM has a firmware- imposed constraint that the length of any additional authenticated data (AAD) must not exceed 240 bytes. The driver thus rejects crypto(9) re- quests that do not satisfy this constraint. SEE ALSO crypto(4), ipsec(4), pci(4), qat(4), random(4), crypto(7), crypto(9) HISTORY The qat_c2xxx driver first appeared in FreeBSD 13.0. AUTHORS The qat_c2xxx driver was written for NetBSD by Hikaru Abe <hikaru@iij.ad.jp>. Mark Johnston <markj@FreeBSD.org> ported the driver to FreeBSD. BUGS Some Atom C2000 QAT devices have two acceleration engines instead of one. The qat_c2xxx driver currently misbehaves when both are enabled and thus does not enable the second acceleration engine if one is present. FreeBSD 14.3 July 21, 2022 QAT_C2XXX(4)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS | BUGS
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