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250435546a
virNetDevBandwidthSet() always clears all existing qdiscs and their subordinate filters before adding all the new qdiscs/filters. This is normally exactly what we want, but there is one case (the network driver) where the Qdisc added by virNetDevBandwidthSet() may already be in use by the nftables backend (which will add a rule to fix the checksum of dhcp packets); in that case, we *don't* want virNetDevBandwidthSet() to clear out the qdisc that was already added for nftables, and none of the bandwidth filters have been added yet, so there already aren't any "old" filters that need to be removed either - it is safe to just skip virNetDevBandwidthClear() in this case. To allow the network driver to set bandwidth without first clearing it, this patch adds the flag VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL to the virNetDevBandwidthSetFlags enum, and recognizes it in virNetDevBandwidthSet() - if the flag is set, then virNetDevBandwidth() will call virNetDevBandwidthClear() just as it always has. But if the flag isn't set it *won't* call virNetDevBandwidthClear(). As suggested above, VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL is set for all calls to virNetdevBandwidthSet() except for two places in the network driver. Signed-off-by: Laine Stump <laine@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com> |
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.. image:: https://gitlab.com/libvirt/libvirt/badges/master/pipeline.svg
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==============================
Libvirt API for virtualization
==============================
Libvirt provides a portable, long term stable C API for managing the
virtualization technologies provided by many operating systems. It
includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware
vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER
Hypervisor.
For some of these hypervisors, it provides a stateful management
daemon which runs on the virtualization host allowing access to the
API both by non-privileged local users and remote users.
Layered packages provide bindings of the libvirt C API into other
languages including Python, Perl, PHP, Go, Java, OCaml, as well as
mappings into object systems such as GObject, CIM and SNMP.
Further information about the libvirt project can be found on the
website:
https://libvirt.org
License
=======
The libvirt C API is distributed under the terms of GNU Lesser General
Public License, version 2.1 (or later). Some parts of the code that are
not part of the C library may have the more restrictive GNU General
Public License, version 2.0 (or later). See the files ``COPYING.LESSER``
and ``COPYING`` for full license terms & conditions.
Installation
============
Instructions on building and installing libvirt can be found on the website:
https://libvirt.org/compiling.html
Contributing
============
The libvirt project welcomes contributions in many ways. For most components
the best way to contribute is to send patches to the primary development
mailing list. Further guidance on this can be found on the website:
https://libvirt.org/contribute.html
Contact
=======
The libvirt project has two primary mailing lists:
* users@lists.libvirt.org (**for user discussions**)
* devel@lists.libvirt.org (**for development only**)
Further details on contacting the project are available on the website:
https://libvirt.org/contact.html