Thread (8 messages) 8 messages, 2 authors, 2021-06-17

[PATCH net-next v7 0/3] virtio_net: add optional flow dissection in virtio_net_hdr_to_skb

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From: Tanner Love <hidden>
Date: 2021-06-16 20:35:04
Subsystem: bonding driver, bpf [core], bpf [general] (safe dynamic programs and tools), bpf [networking] (tcx & tc bpf, sock_addr), bpf [selftests] (test runners & infrastructure), kernel selftest framework, networking drivers, networking [general], the rest, virtio core, virtio net driver · Maintainers: Jay Vosburgh, Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Shuah Khan, Shuah Khan, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, "Michael S. Tsirkin", Jason Wang, Eugenio Pérez

Revision v7 (7 revisions archived).

Revisions (7)
  1. v1
  2. v2 [diff against previous]
  3. v3 [diff against previous]
  4. v4 [diff against previous]
  5. v5 [diff against previous]
  6. v6 [diff against previous]
  7. v7 current [diff against previous]
From: Tanner Love <redacted>

First patch extends the flow dissector BPF program type to accept
pointer to virtio-net header. 

Second patch uses this feature to add optional flow dissection in
virtio_net_hdr_to_skb(). This allows admins to define permitted
packets more strictly, for example dropping deprecated UDP_UFO
packets.

Third patch extends kselftest to cover this feature.

Tanner Love (3):
  net: flow_dissector: extend bpf flow dissector support with vnet hdr
  virtio_net: add optional flow dissection in virtio_net_hdr_to_skb
  selftests/net: amend bpf flow dissector prog to do vnet hdr validation

 drivers/net/bonding/bond_main.c               |   2 +-
 include/linux/bpf.h                           |   8 +
 include/linux/skbuff.h                        |  35 +++-
 include/linux/virtio_net.h                    |  25 ++-
 include/uapi/linux/bpf.h                      |   1 +
 kernel/bpf/verifier.c                         |  33 +--
 net/bpf/test_run.c                            |   2 +-
 net/core/filter.c                             |  53 +++++
 net/core/flow_dissector.c                     |  39 +++-
 net/core/sysctl_net_core.c                    |   9 +
 tools/include/uapi/linux/bpf.h                |   1 +
 tools/testing/selftests/bpf/progs/bpf_flow.c  | 188 +++++++++++++-----
 .../selftests/bpf/test_flow_dissector.c       | 181 +++++++++++++++--
 .../selftests/bpf/test_flow_dissector.sh      |  19 ++
 14 files changed, 497 insertions(+), 99 deletions(-)

-- 
2.32.0.272.g935e593368-goog
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