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Message-ID: <1680090663.603155-2-xuanzhuo@linux.alibaba.com>
Date: Wed, 29 Mar 2023 19:51:03 +0800
From: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To: Andrew Melnychenko <andrew@...nix.com>
Cc: yan@...nix.com, yuri.benditovich@...nix.com, davem@...emloft.net,
edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
mst@...hat.com, jasowang@...hat.com, yoshfuji@...ux-ipv6.org,
dsahern@...nel.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
virtualization@...ts.linux-foundation.org
Subject: Re: [RFC PATCH 0/4] eBPF RSS through QMP support.
Is this a patch-set of QEMU? If yes, why are the email lists all kernel mail
list without QEMU mail list?
Thanks.
On Wed, 29 Mar 2023 13:45:41 +0300, Andrew Melnychenko <andrew@...nix.com> wrote:
> This series of patches provides the ability to retrieve eBPF program
> through qmp, so management application may load bpf blob with proper capabilities.
> Now, virtio-net devices can accept eBPF programs and maps through properties
> as external file descriptors. Access to the eBPF map is direct through mmap()
> call, so it should not require additional capabilities to bpf* calls.
> eBPF file descriptors can be passed to QEMU from parent process or by unix
> socket with sendfd() qmp command.
>
> Overall, the basic scenario of using the helper looks like this:
> * Libvirt checks for ebpf_fds property.
> * Libvirt requests eBPF blob through QMP.
> * Libvirt loads blob for virtio-net.
> * Libvirt launches the QEMU with eBPF fds passed.
>
> Andrew Melnychenko (4):
> ebpf: Added eBPF initialization by fds and map update.
> virtio-net: Added property to load eBPF RSS with fds.
> ebpf: Added declaration/initialization routines.
> qmp: Added new command to retrieve eBPF blob.
>
> ebpf/ebpf.c | 48 +++++++++++++
> ebpf/ebpf.h | 25 +++++++
> ebpf/ebpf_rss-stub.c | 6 ++
> ebpf/ebpf_rss.c | 124 +++++++++++++++++++++++++++------
> ebpf/ebpf_rss.h | 10 +++
> ebpf/meson.build | 1 +
> hw/net/virtio-net.c | 77 ++++++++++++++++++--
> include/hw/virtio/virtio-net.h | 1 +
> monitor/qmp-cmds.c | 17 +++++
> qapi/misc.json | 25 +++++++
> 10 files changed, 307 insertions(+), 27 deletions(-)
> create mode 100644 ebpf/ebpf.c
> create mode 100644 ebpf/ebpf.h
>
> --
> 2.39.1
>
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