openstack
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neutron
Code Issues Proposed changes

Doc: update the qos devref about SR-IOV support 

SR-IOV has added support for enforcing egress minimum bandwidth [1]
and this commit updates the devref about that.

[1] https://review.openstack.org/#/c/347302/

Change-Id: I0e637b893e60d7fdfb1ab4cece15aad74f43d3b5
Related-Bug: #1578989
This commit is contained in:
Hongbin Lu 2018-08-16 22:24:27 +00:00
parent 858a7ff42d
commit 28e07d4c5e
1 changed files with 6 additions and 3 deletions
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9
doc/source/contributor/internals/quality_of_service.rst
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@ -350,12 +350,15 @@ openflow rules.
SR-IOV
++++++
SR-IOV bandwidth limit implementation relies on the new pci_lib function:
SR-IOV bandwidth limit and minimum bandwidth implementation relies on the
new pci_lib function:
* set_vf_max_rate
* set_vf_rate
As the name of the function suggests, the limit is applied on a Virtual
Function (VF).
Function (VF). This function has a parameter called "rate_type" and
its value can be set to "rate" or "min_tx_rate", which is for enforcing
bandwidth limit or minimum bandwidth respectively.
ip link interface has the following limitation for bandwidth limit: it uses
Mbps as units of bandwidth measurement, not kbps, and does not support float