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[v2,0/6] eBPF RSS through QMP support.

Message ID 20230512122902.34345-1-andrew@daynix.com
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Series eBPF RSS through QMP support. | expand

Message

Andrew Melnichenko May 12, 2023, 12:28 p.m. UTC 
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.

Changes since v1:
 * refactored code.
 * eBPF program ids implemented as enums

Andrew Melnychenko (6):
  ebpf: Added eBPF map update through mmap.
  ebpf: Added eBPF initialization by fds.
  virtio-net: Added property to load eBPF RSS with fds.
  ebpf: Added declaration/initialization routines.
  qmp: Added new command to retrieve eBPF blob.
  ebpf: Updated eBPF program and skeleton.

 ebpf/ebpf.c                    |   54 ++
 ebpf/ebpf.h                    |   31 +
 ebpf/ebpf_rss-stub.c           |    6 +
 ebpf/ebpf_rss.c                |  149 +++-
 ebpf/ebpf_rss.h                |   10 +
 ebpf/meson.build               |    1 +
 ebpf/rss.bpf.skeleton.h        | 1469 ++++++++++++++++----------------
 hw/net/virtio-net.c            |   55 +-
 include/hw/virtio/virtio-net.h |    1 +
 monitor/qmp-cmds.c             |   16 +
 qapi/misc.json                 |   38 +
 tools/ebpf/rss.bpf.c           |    2 +-
 12 files changed, 1073 insertions(+), 759 deletions(-)
 create mode 100644 ebpf/ebpf.c
 create mode 100644 ebpf/ebpf.h

Comments

Andrew Melnichenko May 12, 2023, 12:31 p.m. UTC | #1 
Hi all,
Also, a possible solution for libvirt may look like this:
https://github.com/daynix/libvirt/tree/RSS_eBPF (WIP)

On Fri, May 12, 2023 at 3:47 PM Andrew Melnychenko <andrew@daynix.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.
>
> Changes since v1:
>  * refactored code.
>  * eBPF program ids implemented as enums
>
> Andrew Melnychenko (6):
>   ebpf: Added eBPF map update through mmap.
>   ebpf: Added eBPF initialization by fds.
>   virtio-net: Added property to load eBPF RSS with fds.
>   ebpf: Added declaration/initialization routines.
>   qmp: Added new command to retrieve eBPF blob.
>   ebpf: Updated eBPF program and skeleton.
>
>  ebpf/ebpf.c                    |   54 ++
>  ebpf/ebpf.h                    |   31 +
>  ebpf/ebpf_rss-stub.c           |    6 +
>  ebpf/ebpf_rss.c                |  149 +++-
>  ebpf/ebpf_rss.h                |   10 +
>  ebpf/meson.build               |    1 +
>  ebpf/rss.bpf.skeleton.h        | 1469 ++++++++++++++++----------------
>  hw/net/virtio-net.c            |   55 +-
>  include/hw/virtio/virtio-net.h |    1 +
>  monitor/qmp-cmds.c             |   16 +
>  qapi/misc.json                 |   38 +
>  tools/ebpf/rss.bpf.c           |    2 +-
>  12 files changed, 1073 insertions(+), 759 deletions(-)
>  create mode 100644 ebpf/ebpf.c
>  create mode 100644 ebpf/ebpf.h
>
> --
> 2.39.1
>