[PATCH v2 0/4] VirtioNet RSS support.

[Maxime Coquelin]

Hi,

On 1/18/22 14:03, andrew at daynix.com (Andrew Melnichenko) wrote:
> Hi people!
> Can you review new patches, please?

+1, I'm also interested in this feature as I am implementing it for
Vhost-user.

Thanks,
Maxime

> On Sun, Jan 9, 2022 at 11:07 PM Andrew Melnychenko <andrew at daynix.com> wrote:
>>
>> This series of patches add RSS property support for virtio-net-pci.
>>
>> Virtio RSS effectively works with TAP devices, it requires additional
>> vectors for VirtioNet, queues for TAP device, and vCPU cores.
>> Example of device configuration:
>> ```
>> <interface type="network">
>>    <mac address="52:54:00:c4:90:25"/>
>>    <source network="default"/>
>>    <model type="virtio"/>
>>    <driver name="qemu" queues="9" rss="on" rss_hash_report="off"/>
>>    <address type="pci" domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
>> </interface>
>> ```
>>
>> Capability "rss" enables RSS, "rss_hash_report" - enables hashes in vheader.
>> For now, "rss" property will trigger "in-qemu" RSS in most cases.
>> Current Qemu(6.2) supports eBPF RSS that may require additional capabilities.
>> In future, the helper will be provided. And this code is the base for VirtIO RSS.
>>
>> Changes since v1:
>>   * refactored patches
>>   * changed docs and tests
>>
>> Changes since RFC:
>>   * rebased and refactored
>>   * added tests
>>   * postponed the helper
>>
>> Andrew Melnychenko (4):
>>    domain_conf: Added configs for RSS and Hash report.
>>    qemu_capabilities: Added capabilites for qemu's "rss" and "hash".
>>    qemu_command: Added "rss" and "hash" properties.
>>    test: Added xml2argv and xml2xml tests.
>>
>>   docs/formatdomain.rst                         | 18 ++++++++
>>   docs/schemas/domaincommon.rng                 | 10 +++++
>>   src/conf/domain_conf.c                        | 31 ++++++++++++-
>>   src/conf/domain_conf.h                        |  2 +
>>   src/qemu/qemu_capabilities.c                  |  2 +
>>   src/qemu/qemu_capabilities.h                  |  1 +
>>   src/qemu/qemu_command.c                       |  2 +
>>   src/qemu/qemu_validate.c                      | 14 ++++++
>>   .../caps_5.1.0.x86_64.xml                     |  1 +
>>   .../caps_5.2.0.aarch64.xml                    |  1 +
>>   .../qemucapabilitiesdata/caps_5.2.0.ppc64.xml |  1 +
>>   .../caps_5.2.0.riscv64.xml                    |  1 +
>>   .../qemucapabilitiesdata/caps_5.2.0.s390x.xml |  1 +
>>   .../caps_5.2.0.x86_64.xml                     |  1 +
>>   .../caps_6.0.0.aarch64.xml                    |  1 +
>>   .../qemucapabilitiesdata/caps_6.0.0.s390x.xml |  1 +
>>   .../caps_6.0.0.x86_64.xml                     |  1 +
>>   .../caps_6.1.0.x86_64.xml                     |  1 +
>>   .../caps_6.2.0.aarch64.xml                    |  1 +
>>   .../qemucapabilitiesdata/caps_6.2.0.ppc64.xml |  1 +
>>   .../caps_6.2.0.x86_64.xml                     |  1 +
>>   .../net-virtio-rss.x86_64-latest.args         | 43 +++++++++++++++++++
>>   tests/qemuxml2argvdata/net-virtio-rss.xml     | 39 +++++++++++++++++
>>   .../virtio-options.x86_64-latest.args         |  2 +-
>>   tests/qemuxml2argvdata/virtio-options.xml     |  2 +-
>>   tests/qemuxml2argvtest.c                      |  2 +
>>   26 files changed, 178 insertions(+), 3 deletions(-)
>>   create mode 100644 tests/qemuxml2argvdata/net-virtio-rss.x86_64-latest.args
>>   create mode 100644 tests/qemuxml2argvdata/net-virtio-rss.xml
>>
>> --
>> 2.34.1
>>
> 
>