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* [RFC PATCH 0/4] eBPF RSS through QMP support.
@ 2023-03-29 10:45 Andrew Melnychenko
  2023-03-29 10:45 ` [RFC PATCH 1/5] ebpf: Added eBPF initialization by fds and map update Andrew Melnychenko
                   ` (5 more replies)
  0 siblings, 6 replies; 8+ messages in thread
From: Andrew Melnychenko @ 2023-03-29 10:45 UTC (permalink / raw)
  To: davem, edumazet, kuba, pabeni, mst, jasowang, yoshfuji, dsahern,
	netdev, linux-kernel, virtualization
  Cc: yan, yuri.benditovich

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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^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2023-03-30  0:27 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-03-29 10:45 [RFC PATCH 0/4] eBPF RSS through QMP support Andrew Melnychenko
2023-03-29 10:45 ` [RFC PATCH 1/5] ebpf: Added eBPF initialization by fds and map update Andrew Melnychenko
2023-03-29 10:45 ` [RFC PATCH 2/5] virtio-net: Added property to load eBPF RSS with fds Andrew Melnychenko
2023-03-29 10:45 ` [RFC PATCH 3/5] ebpf: Added declaration/initialization routines Andrew Melnychenko
2023-03-29 10:45 ` [RFC PATCH 4/5] qmp: Added new command to retrieve eBPF blob Andrew Melnychenko
2023-03-29 10:45 ` [RFC PATCH 5/5] ebpf: Updated eBPF program and skeleton Andrew Melnychenko
2023-03-29 11:51 ` [RFC PATCH 0/4] eBPF RSS through QMP support Xuan Zhuo
2023-03-30  0:09   ` Andrew Melnichenko

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