cdff281f64
"ip link" commands allow to define VF rates independently.
That means, first "rate" (max BW) can be set and in a second
command "min" (min BW) (check LP bug description).
However Pyroute2 command to set the VF rates requires to set both.
If one value is missing ("min_tx_rate", "max_tx_rate"), the library
sets this value to 0; in other words, the value is deleted.
The Pyroute2 structures are built depending on the parameter names.
In this case, {'vf': {'rate': ...}} will create a "vf_rate" [1]
nla structure, that requires "min_tx_rate" and "max_tx_rate".
This is part of the full structure passed to the "iproute" library
[2].
This is an example of code that only sets the "max_tx_rate" for
the 15th VF of "enp196s0f0":
$ from neutron.plugins.ml2.drivers.mech_sriov.agent import pci_lib
pci = pci_lib.PciDeviceIPWrapper("enp196s0f0")
pci.set_vf_rate(15, {'max_tx_rate': 10})
The "msg" [3] (structure passed to "iproute" library) is this:
https://paste.opendev.org/show/b2FZBOebGOCHMrYhPr6X/. The
"min_tx_rate" is set to the default value 0.
This patch reads first the existing rates ("min_tx_rate",
"max_tx_rate") and populates the command parameters accordingly.
[1]
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|---|---|---|
| api-ref | ||
| devstack | ||
| doc | ||
| etc | ||
| neutron | ||
| playbooks | ||
| rally-jobs | ||
| releasenotes | ||
| roles | ||
| tools | ||
| vagrant/ovn | ||
| zuul.d | ||
| .coveragerc | ||
| .gitignore | ||
| .gitreview | ||
| .mailmap | ||
| .pylintrc | ||
| .stestr.conf | ||
| CONTRIBUTING.rst | ||
| HACKING.rst | ||
| LICENSE | ||
| README.rst | ||
| TESTING.rst | ||
| bindep.txt | ||
| lower-constraints.txt | ||
| plugin.spec | ||
| requirements.txt | ||
| setup.cfg | ||
| setup.py | ||
| test-requirements.txt | ||
| tox.ini | ||
README.rst
OpenStack Neutron
Neutron is an OpenStack project to provide "network connectivity as a service" between interface devices (e.g., vNICs) managed by other OpenStack services (e.g., Nova).
To learn more about neutron:
- Documentation: https://docs.openstack.org/neutron/latest/
- Features: https://specs.openstack.org/openstack/neutron-specs
- Defects: https://launchpad.net/neutron
- Release notes: https://docs.openstack.org/releasenotes/neutron/index.html
- Source: https://opendev.org/openstack/neutron
Get in touch via email. Use [Neutron] in your subject.
To learn how to contribute, please read the CONTRIBUTING.rst file.