From: Krzysztof Kanas <kka...@marvell.com> Thunderx-nic uses secondary VF's to provide more queues to DPDK. Current instructions explain the concept but don't show easy way to find which PCI id is primary and which is secondary VF's.
Signed-off-by: Krzysztof Kanas <kka...@marvell.com> --- doc/guides/nics/thunderx.rst | 48 ++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/doc/guides/nics/thunderx.rst b/doc/guides/nics/thunderx.rst index 3b75a9a9afb5..fd66bda36ae4 100644 --- a/doc/guides/nics/thunderx.rst +++ b/doc/guides/nics/thunderx.rst @@ -313,6 +313,54 @@ We will choose four secondary queue sets from the ending of the list (0002:01:01 The nicvf thunderx driver will make use of attached secondary VFs automatically during the interface configuration stage. +driver thunder-nic VF's +~~~~~~~~~~~~~~~~~~~~~~~ + +To distinguish thunder-nic primary VFs and secondary VFs you can use sysfs + .. code-block:: console + ll /sys/bus/pci/drivers/thunder-nic/ + total 0 + drwxr-xr-x 2 root root 0 Jan 22 11:19 ./ + drwxr-xr-x 86 root root 0 Jan 22 11:07 ../ + lrwxrwxrwx 1 root root 0 Jan 22 11:19 0001:01:00.0 -> '../../../../devices/platform/soc@0/849000000000.pci/pci0001:00/0001:00:10.0/0001:01:00.0'/ + + cat /sys/bus/pci/drivers/thunder-nic/0001\:01\:00.0/sriov_sqs_assignment + 12 + 0 0001:01:00.1 vfio-pci +: 12 13 + 1 0001:01:00.2 thunder-nicvf -: + 2 0001:01:00.3 thunder-nicvf -: + 3 0001:01:00.4 thunder-nicvf -: + 4 0001:01:00.5 thunder-nicvf -: + 5 0001:01:00.6 thunder-nicvf -: + 6 0001:01:00.7 thunder-nicvf -: + 7 0001:01:01.0 thunder-nicvf -: + 8 0001:01:01.1 thunder-nicvf -: + 9 0001:01:01.2 thunder-nicvf -: + 10 0001:01:01.3 thunder-nicvf -: + 11 0001:01:01.4 thunder-nicvf -: + 12 0001:01:01.5 vfio-pci: 0 + 13 0001:01:01.6 vfio-pci: 0 + 14 0001:01:01.7 thunder-nicvf: 255 + 15 0001:01:02.0 thunder-nicvf: 255 + 16 0001:01:02.1 thunder-nicvf: 255 + 17 0001:01:02.2 thunder-nicvf: 255 + 18 0001:01:02.3 thunder-nicvf: 255 + 19 0001:01:02.4 thunder-nicvf: 255 + 20 0001:01:02.5 thunder-nicvf: 255 + 21 0001:01:02.6 thunder-nicvf: 255 + 22 0001:01:02.7 thunder-nicvf: 255 + 23 0001:01:03.0 thunder-nicvf: 255 + 24 0001:01:03.1 thunder-nicvf: 255 + 25 0001:01:03.2 thunder-nicvf: 255 + 26 0001:01:03.3 thunder-nicvf: 255 + 27 0001:01:03.4 thunder-nicvf: 255 + 28 0001:01:03.5 thunder-nicvf: 255 + 29 0001:01:03.6 thunder-nicvf: 255 + 30 0001:01:03.7 thunder-nicvf: 255 + 31 0001:01:04.0 thunder-nicvf: 255 + +Every column that ends with 'thunder-nicvf: number' can be used as secondary VF. +In printout above all entres after '14 0001:01:01.7 thunder-nicvf: 255' can be used as secondary VF. Module params -------------- -- 2.21.0
