Added note for QAT driver information and device configuration for services.
Signed-off-by: Emma Finn <[email protected]> --- doc/guides/cryptodevs/qat.rst | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/doc/guides/cryptodevs/qat.rst b/doc/guides/cryptodevs/qat.rst index 68d792e4cc..bae7724a76 100644 --- a/doc/guides/cryptodevs/qat.rst +++ b/doc/guides/cryptodevs/qat.rst @@ -501,6 +501,27 @@ If you are running on a kernel which includes a driver for your device, see The actual crypto services enabled on the system depend on QAT driver capabilities and hardware slice configuration. +..note:: + + With the introduction of QAT Generation 4, the in-tree drivers are available within the + mainline Linux kernel. Out-of-tree (OOT) drivers for QAT Gen 4 are currently in sustaining + mode, meaning they will only receive maintenance updates without new feature development. + Future generations of QAT will be supported with in-tree drivers exclusively. + +.. note:: + + For **in-tree drivers**, when multiple QAT instances are available, each instance is assigned a + different crypto service by default (asym;sym or dc). The available crypto queue pair request + will return zero if the corresponding service is not enabled. + + To verify the device configuration, run: + cat /sys/bus/pci/devices/<BDF>/qat/cfg_services + + For symmetric and asymmetric crypto services, ensure that `"asym;sym"` are enabled. + For **out-of-tree drivers**, the configuration file for each instance can be found at: + /etc/<GEN>_dev<ID>.conf + + Installation using kernel.org driver ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- 2.43.0
