netdev - [PATCH RFC bpf-next 0/6] Add the the capability to load HW RX checsum in eBPF programs

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Message-Id: <20250920-xdp-meta-rxcksum-v1-0-35e76a8a84e7@kernel.org>
Date: Sat, 20 Sep 2025 14:20:26 +0200
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: Donald Hunter <donald.hunter@...il.com>, 
 Jakub Kicinski <kuba@...nel.org>, "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, 
 Simon Horman <horms@...nel.org>, Alexei Starovoitov <ast@...nel.org>, 
 Daniel Borkmann <daniel@...earbox.net>, 
 Jesper Dangaard Brouer <hawk@...nel.org>, 
 John Fastabend <john.fastabend@...il.com>, 
 Stanislav Fomichev <sdf@...ichev.me>, Andrew Lunn <andrew+netdev@...n.ch>, 
 Tony Nguyen <anthony.l.nguyen@...el.com>, 
 Przemek Kitszel <przemyslaw.kitszel@...el.com>, 
 Alexander Lobakin <aleksander.lobakin@...el.com>, 
 Andrii Nakryiko <andrii@...nel.org>, 
 Martin KaFai Lau <martin.lau@...ux.dev>, 
 Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
 Yonghong Song <yonghong.song@...ux.dev>, KP Singh <kpsingh@...nel.org>, 
 Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, 
 Shuah Khan <shuah@...nel.org>
Cc: netdev@...r.kernel.org, bpf@...r.kernel.org, 
 intel-wired-lan@...ts.osuosl.org, linux-kselftest@...r.kernel.org, 
 Lorenzo Bianconi <lorenzo@...nel.org>
Subject: [PATCH RFC bpf-next 0/6] Add the the capability to load HW RX
 checsum in eBPF programs

Introduce bpf_xdp_metadata_rx_checksum() kfunc in order to load the HW
RX cheksum results in the eBPF program binded to the NIC.
Implement xmo_rx_checksum callback for veth and ice drivers.

---
Lorenzo Bianconi (6):
      netlink: specs: Add XDP RX checksum capability to XDP metadata specs
      net: xdp: Add xmo_rx_checksum callback
      veth: Add xmo_rx_checksum callback to veth driver
      net: ice: Add xmo_rx_checksum callback
      selftests/bpf: Add selftest support for bpf_xdp_metadata_rx_checksum
      selftests/bpf: Add bpf_xdp_metadata_rx_checksum support to xdp_hw_metadat prog

 Documentation/netlink/specs/netdev.yaml            |  5 ++
 drivers/net/ethernet/intel/ice/ice_base.c          |  1 +
 drivers/net/ethernet/intel/ice/ice_txrx.h          |  1 +
 drivers/net/ethernet/intel/ice/ice_txrx_lib.c      | 82 ++++++++++++++++++++++
 drivers/net/veth.c                                 | 19 +++++
 include/net/xdp.h                                  |  6 ++
 net/core/xdp.c                                     | 29 ++++++++
 .../selftests/bpf/prog_tests/xdp_metadata.c        |  7 ++
 .../testing/selftests/bpf/progs/xdp_hw_metadata.c  |  7 ++
 tools/testing/selftests/bpf/progs/xdp_metadata.c   |  1 +
 tools/testing/selftests/bpf/xdp_hw_metadata.c      | 27 +++++++
 tools/testing/selftests/bpf/xdp_metadata.h         | 13 ++++
 12 files changed, 198 insertions(+)
---
base-commit: 315f423be0d1ebe720d8fd4fa6bed68586b13d34
change-id: 20250915-xdp-meta-rxcksum-963cb3a793e7

Best regards,
-- 
Lorenzo Bianconi <lorenzo@...nel.org>