From: Andrew Melnichenko <andrew@daynix.com>
To: Markus Armbruster <armbru@redhat.com>
Cc: "Daniel P. Berrangé" <berrange@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Jason Wang" <jasowang@redhat.com>,
qemu-devel@nongnu.org,
"Yuri Benditovich" <yuri.benditovich@daynix.com>,
"Yan Vugenfirer" <yan@daynix.com>,
"Eric Blake" <eblake@redhat.com>
Subject: Re: [PATCH 5/5] qmp: Added qemu-ebpf-rss-path command.
Date: Tue, 31 Aug 2021 22:37:44 +0300 [thread overview]
Message-ID: <CABcq3pEvHUB1K_+gkwP1NpOSxFYs563WSOmAOh4qvvGczCpytA@mail.gmail.com> (raw)
In-Reply-To: <87k0k1wtfc.fsf@dusky.pond.sub.org>
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Hi,
> Got something I could git-pull?
>
I can share some links for tests:
https://github.com/daynix/qemu/tree/HelperEBPFv3 - qemu with helper
https://github.com/daynix/libvirt/tree/RSS_RFC_v1 - libvirt with RSS
On Tue, Aug 31, 2021 at 6:00 PM Markus Armbruster <armbru@redhat.com> wrote:
> Yuri Benditovich <yuri.benditovich@daynix.com> writes:
>
> > On Mon, Aug 30, 2021 at 11:14 AM Markus Armbruster <armbru@redhat.com>
> wrote:
> >>
> >> Yuri Benditovich <yuri.benditovich@daynix.com> writes:
> >>
> >> > On Mon, Aug 30, 2021 at 9:10 AM Markus Armbruster <armbru@redhat.com>
> wrote:
>
> [...]
>
> >> >> So let's try again: if libvirt does use the wrong RSS helper, how
> does
> >> >> the system behave?
> >> >
> >> > The receive-side scaling may work incorrectly, i.e. finally may move
> >> > incoming packets to a virtqueue different than expected one.
> >>
> >> Then I'm confused about the purpose of "the stamp" mentioned below. Can
> >> you enlighten me?
> >
> > The stamp is a string (common for qemu executable and RSS helper
> > executable during build) that qemu can later retrieve from the helper
> > in run-time and ensure this helper is fully compatible with this build
> > of qemu (in terms of eBPF operation). The helper is built with the
> > same C headers (related to ebpf operation) as the qemu, the qemu is
> > able to receive file descriptors created by the helper (of ebpf
> > program and ebpf data structure's maps) from libvirt and deal with
> > them as if it has created them.
>
> Thanks.
>
> I tried to apply your series to check a few of my assumptions, but I'm
> getting conflicts. Got something I could git-pull?
>
> [...]
>
>
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next prev parent reply other threads:[~2021-08-31 19:41 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-13 15:37 [PATCH 0/5] ebpf: Added ebpf helper for libvirtd Andrew Melnychenko
2021-07-13 15:37 ` [PATCH 1/5] ebpf: Added eBPF initialization by fds and map update Andrew Melnychenko
2021-08-20 3:34 ` Jason Wang
2021-08-25 18:13 ` Andrew Melnichenko
2021-07-13 15:37 ` [PATCH 2/5] virtio-net: Added property to load eBPF RSS with fds Andrew Melnychenko
2021-08-20 3:36 ` Jason Wang
2021-08-25 18:18 ` Andrew Melnichenko
2021-07-13 15:37 ` [PATCH 3/5] qmp: Added the helper stamp check Andrew Melnychenko
2021-07-13 15:37 ` [PATCH 4/5] ebpf_rss_helper: Added helper for eBPF RSS Andrew Melnychenko
2021-08-20 3:40 ` Jason Wang
2021-08-25 18:24 ` Andrew Melnichenko
2021-09-01 6:37 ` Jason Wang
2021-08-30 17:07 ` Yuri Benditovich
2021-09-01 6:42 ` Jason Wang
2021-09-06 15:50 ` Andrew Melnichenko
2021-09-07 3:22 ` Jason Wang
2021-09-07 10:40 ` Yuri Benditovich
2021-09-08 3:45 ` Jason Wang
2021-09-09 0:00 ` Yuri Benditovich
2021-09-09 1:16 ` Jason Wang
2021-09-09 23:43 ` Yuri Benditovich
2021-09-10 1:37 ` Jason Wang
2021-07-13 15:37 ` [PATCH 5/5] qmp: Added qemu-ebpf-rss-path command Andrew Melnychenko
2021-08-07 12:54 ` Markus Armbruster
2021-08-10 11:58 ` Andrew Melnichenko
2021-08-24 6:41 ` Markus Armbruster
2021-08-25 18:45 ` Andrew Melnichenko
2021-08-26 4:53 ` Markus Armbruster
2021-08-29 20:13 ` Yuri Benditovich
2021-08-30 6:10 ` Markus Armbruster
2021-08-30 7:51 ` Yuri Benditovich
2021-08-30 8:13 ` Markus Armbruster
2021-08-30 16:56 ` Yuri Benditovich
2021-08-31 15:00 ` Markus Armbruster
2021-08-31 19:37 ` Andrew Melnichenko [this message]
2021-09-01 7:16 ` Markus Armbruster
[not found] ` <CABcq3pGzs=RqLCuu70KyWt7W6T=qEhihK6v=iHJyfuGqiN_Q+A@mail.gmail.com>
[not found] ` <CAOEp5Oc_uUn2nJq+B+SK-iQSo5udyUTirWHS5=8N0JxerRaz7A@mail.gmail.com>
2021-09-09 10:35 ` Andrew Melnichenko
2021-09-02 16:06 ` Markus Armbruster
2021-07-22 8:37 ` [PATCH 0/5] ebpf: Added ebpf helper for libvirtd Andrew Melnichenko
2021-08-16 11:57 ` Yuri Benditovich
2021-08-17 5:49 ` Jason Wang
2021-08-20 3:43 ` Jason Wang
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