[PATCH v3 0/6] eBPF RSS through QMP support.

[Andrew Melnychenko <andrew@daynix.com>]

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.

Possible solution for libvirt may look like this: https://github.com/daynix/libvirt/tree/RSS_eBPF (WIP)

Changes since v2:
 * moved/refactored QMP command
 * refactored virtio-net

Changes since v1:
 * refactored virtio-net
 * moved hunks for ebpf mmap()
 * added qmp enum for eBPF id.

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                    |   70 ++
 ebpf/ebpf.h                    |   31 +
 ebpf/ebpf_rss-stub.c           |    6 +
 ebpf/ebpf_rss.c                |  150 +++-
 ebpf/ebpf_rss.h                |   10 +
 ebpf/meson.build               |    2 +-
 ebpf/rss.bpf.skeleton.h        | 1469 ++++++++++++++++----------------
 hw/net/virtio-net.c            |   55 +-
 include/hw/virtio/virtio-net.h |    1 +
 qapi/ebpf.json                 |   55 ++
 qapi/meson.build               |    1 +
 qapi/qapi-schema.json          |    1 +
 tools/ebpf/rss.bpf.c           |    2 +-
 13 files changed, 1093 insertions(+), 760 deletions(-)
 create mode 100644 ebpf/ebpf.c
 create mode 100644 ebpf/ebpf.h
 create mode 100644 qapi/ebpf.json

-- 
2.39.1