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QAT(4) Kernel Interfaces Manual QAT(4) NAME qat -- Intel (R) QuickAssist Technology (QAT) driver SYNOPSIS To load the driver call: kldload qat In order to load the driver on boot add these lines to loader.conf(5) selecting firmware(s) suitable for installed device(s) qat_200xx_fw_load="YES" qat_c3xxx_fw_load="YES" qat_c4xxx_fw_load="YES" qat_c62x_fw_load="YES" qat_dh895xcc_fw_load="YES" qat_4xxx_fw_load="YES" qat_load="YES" DESCRIPTION The qat driver supports cryptography and compression acceleration of the Intel (R) QuickAssist Technology (QAT) devices. The qat driver is intended for platforms that contain: o Intel (R) C62x Chipset o Intel (R) Atom C3000 processor product family o Intel (R) QuickAssist Adapter 8960/Intel (R) QuickAssist Adapter 8970 (formerly known as "Lewis Hill") o Intel (R) Communications Chipset 8925 to 8955 Series o Intel (R) Atom P5300 processor product family o Intel (R) QAT 4xxx Series The qat driver supports cryptography and compression acceleration. A complete API for offloading these operations is exposed in the kernel and may be used by any other entity directly. For details of usage and supported operations and algorithms refer to the following documenta- tion available from Intel Download Center https://downloadcenter.intel.com: o Intel (R), QuickAssist Technology API Programmer's Guide. o Intel (R), QuickAssist Technology Cryptographic API Reference Manual. o Intel (R), QuickAssist Technology Data Compression API Reference Manual. o Intel (R), QuickAssist Technology Performance Optimization Guide. In addition to exposing complete kernel API for offloading cryptography and compression operations, the qat driver also integrates with crypto(4), allowing offloading supported cryptography operations to In- tel (R) QuickAssist Technology (QAT) devices. For details of usage and supported operations and algorithms refer to the documentation men- tioned above and "SEE ALSO" section. SYSCTL_VARIABLES Following variables may be used to reconfigure the QAT device. For con- figuration persistence those variables may be set before loading the driver, either via kenv(1) or loader.conf(5). The device specific con- figuration options are prefixed with dev.qat.X. where X is the device number. The specific device needs to be in "down" state before chang- ing the configuration. state Show current state of the device. Override the device state. Possible values: "down", "up". NOTE: If the symmetric services are used for device the qat_ocf driver needs to be disabled prior the device reconfiguration. Following variable may be used to enable/disable the QAT cryp- tographic framework connectivity dev.qat_ocf.0.enable. Enabled by default. cfg_services Override the device services enabled: symmetric, asymmetric, data compression. Possible values: "sym", "asym", "dc", "sym;dc", "asym;dc", "sym;asym". Default services configured are "sym;asym" for even and "dc" for odd devices. cfg_mode Override the device mode configuration for kernel space and user space instances. Possible values: "ks", "us", "ks;us". Default value "ks;us". num_user_processes Override the number of uio user space processes that can con- nect to the QAT device. Default: 2 The following sysctl(8) variables are read-only: frequency QAT device frequency value. mmp_version QAT MMP Library revision number. hw_version QAT hardware revision number. fw_version QAT firmware revision number. dev_cfg Summary of device specific configuration. heartbeat QAT device heartbeat status. Value '1' indicates that the de- vice is operational. heartbeat_failed Number of QAT heartbeat failures received. heartbeat_sent Number of QAT heartbeat requests sent. COMPATIBILITY The qat driver replaced previous implementation introduced in FreeBSD 13.0. Current version, in addition to crypto(4) integration, supports also data compression and exposes a complete API for offload- ing data compression and cryptography operations. SEE ALSO crypto(4), ipsec(4), pci(4), crypto(7), crypto(9) HISTORY This qat driver was introduced in FreeBSD 14.0. FreeBSD 13.0 included a different version of qat driver. AUTHORS The qat driver was written by Intel (R) Corporation. FreeBSD 13.2 May 4, 2023 QAT(4)
NAME | SYNOPSIS | DESCRIPTION | SYSCTL_VARIABLES | COMPATIBILITY | SEE ALSO | HISTORY | AUTHORS
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