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envelope-from=intel-wired-lan-bounces@osuosl.org;\n receiver= ","DKIM-Filter":["OpenDKIM Filter v2.11.0 smtp4.osuosl.org 3C60C40CC3","OpenDKIM Filter v2.11.0 smtp4.osuosl.org 4A71F40925"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org;\n\ts=default; t=1771317277;\n\tbh=H3jL9wd7+AqHPCUpoJVlwDhfqcwAnMrrILuu2oEI2u4=;\n\th=From:Date:To:Cc:Subject:List-Id:List-Unsubscribe:List-Archive:\n\t List-Post:List-Help:List-Subscribe:From;\n\tb=OKnHTGc5LlND/J9JB+VstQwt0q/e1WzmyinSz/QjEtkEQ4Egh4P0CFE/vhspjObEI\n\t NjZ0meWylfCqRifiiTehe3JdIMFJ/L0CZglyqNGDenzPtmSc8hQsmPkoNsbasMtF5c\n\t n9svnaTuiREUkOhZ9D5/Wf1OyMSpRIV1LpyenVEMGuzrpPQQPX+g5TPBrq8m6xHyUr\n\t s3edEi7rjyrGoFv8O2jKPntPzY8/8Gmz/21v+oiDKfE8wksxoexH9B3KkEIctbgjeE\n\t 8GvEyDHOiMJGjjHxFj19LoVHdUvHuVV6z20tBIh5Wdl7IuZ/ClUPM48fCmfykdnJvn\n\t 3pAeERbJJy0ig==","Received-SPF":"Pass (mailfrom) identity=mailfrom;\n client-ip=2600:3c0a:e001:78e:0:1991:8:25; helo=sea.source.kernel.org;\n envelope-from=lorenzo@kernel.org; receiver=","DMARC-Filter":"OpenDMARC Filter v1.4.2 smtp4.osuosl.org 4A71F40925","From":"Lorenzo Bianconi ","Date":"Tue, 17 Feb 2026 09:33:55 +0100","Message-Id":"<20260217-bpf-xdp-meta-rxcksum-v3-0-30024c50ba71@kernel.org>","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","X-B4-Tracking":"v=1; b=H4sIAAAAAAAC/4WOyw6CMBREf4V0bc3lQpG68j8Mi1Iu0CCPtEgwh\n H+3kJjoQl3OJOfMLMyRNeTYOViYpck403c+RIeA6Vp1FXFT+MwQUIBEwfOh5HMx8JZGxe2sG3d\n vuQRIUkEoQRbMo4Ol0sy79pr5XBs39vaxr0y4tX+EE3LgSR6VJNOTJhleGrId3Y69rbYBTyeAY\n fSDVinqOAVUZU7v9PZnCl8fNgt8sYTeQqIQQisFIv74kK3r+gRUGBv5PQEAAA==","X-Change-ID":"20250925-bpf-xdp-meta-rxcksum-900685e2909d","To":"Donald Hunter ,\n Jakub Kicinski , \"David S. Miller\" ,\n Eric Dumazet , Paolo Abeni ,\n Simon Horman , Alexei Starovoitov ,\n Daniel Borkmann ,\n Jesper Dangaard Brouer ,\n John Fastabend ,\n Stanislav Fomichev , Andrew Lunn ,\n Tony Nguyen ,\n Przemek Kitszel ,\n Alexander Lobakin ,\n Andrii Nakryiko ,\n Martin KaFai Lau ,\n Eduard Zingerman , Song Liu ,\n Yonghong Song , KP Singh ,\n Hao Luo , Jiri Olsa ,\n Shuah Khan ,\n Maciej Fijalkowski ","Cc":"Jakub Sitnicki , netdev@vger.kernel.org,\n bpf@vger.kernel.org, intel-wired-lan@lists.osuosl.org,\n linux-kselftest@vger.kernel.org, Lorenzo Bianconi ,\n Aleksandr Loktionov ","X-Mailer":"b4 0.14.2","X-Mailman-Original-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple;\n d=kernel.org; s=k20201202; t=1771317274;\n bh=uL4DxKFzQP1l9k3Kk1Acq3jftmgv8xT3AxsRIN0UWhQ=;\n h=From:Subject:Date:To:Cc:From;\n b=J1G+E8GemW3j3SNkjeWUN98fLzNofnJDINU6InSnvliGxzY2vnwomAKb/qQVHgYvN\n bzHF0jxCfdhntCI1I6H6zVwhzmT5LWbYXx/ZCL+QlOTELVbhNiz+wrfjHSQoY90Ykh\n VwaVy26CmMK3kune0GOQ64+uYrfqOrmsSwKum7jTWZj9Znxm5e4SS6ZRNBC+CDpESj\n C7lELU7R6rLVRf/A+L/ocgrKROy03GXkaGzlxbJj77nN1LQ/iTpK1wjPo5cLaaR92L\n 0xHAStfTeWy2FnJizFlKA5SjGojKYM6/fj8SlJ2KYCe1Z1HGjk/nQeoRR8VbWFSvOV\n oTYX7ZDLwIHcQ==","X-Mailman-Original-Authentication-Results":["smtp4.osuosl.org;\n dmarc=pass (p=quarantine dis=none)\n header.from=kernel.org","smtp4.osuosl.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.a=rsa-sha256 header.s=k20201202 header.b=J1G+E8Ge"],"Subject":"[Intel-wired-lan] [PATCH bpf-next v3 0/5] Add the the capability to\n load HW RX checsum in eBPF programs","X-BeenThere":"intel-wired-lan@osuosl.org","X-Mailman-Version":"2.1.30","Precedence":"list","List-Id":"Intel Wired Ethernet Linux Kernel Driver Development\n ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"intel-wired-lan-bounces@osuosl.org","Sender":"\"Intel-wired-lan\" "},"content":"Introduce bpf_xdp_metadata_rx_checksum() kfunc in order to load the HW\nRX cheksum results in the eBPF program binded to the NIC.\nImplement xmo_rx_checksum callback for veth and ice drivers.\n\nIf the hardware detects a wrong/failed checksum, it will report\nCHECKSUM_NONE in the packet metadata. Moreover, CHECKSUM_NONE will be\nreturned even if the NIC can't parse the packet (e.g. if it does not\nsupport a specific protocol). A possible use case for\nbpf_xdp_metadata_rx_checksum() would be to implement a XDP DDoS\napplication [1] combining the info from bpf_xdp_metadata_rx_checksum()\nand bpf_xdp_metadata_rx_hash() kfuncs in order to filter packets with a\nwrong/failed checksum.\n\n[1] https://blog.cloudflare.com/unimog-cloudflares-edge-load-balancer/\n\n---\nChanges in v3:\n- Remoe leftover assignment from v2 in veth_xdp_rx_checksum()\n- Fix typos\n- Fix commit logs\n- Link to v2: https://lore.kernel.org/r/20260213-bpf-xdp-meta-rxcksum-v2-0-a82c4802afbe@kernel.org\n\nChanges in v2:\n- Remove XDP_CHECKSUM_PARTIAL definition\n- Improve veth_xdp_rx_checksum() callback\n- Fix uninitialized case for cksum_meta in ice_get_rx_csum()\n- Fix sparse warnings in ice driver\n- Fix typos\n- Link to v1: https://lore.kernel.org/r/20260210-bpf-xdp-meta-rxcksum-v1-0-e5d55caa0541@kernel.org\n\nChanges in v1:\n- Rebase on top of bpf-next\n- Test ice driver using xdp_hw_metadata tool available in the bpf\n kernel selftest\n- Improve cover letter with an use-case for\n bpf_xdp_metadata_rx_checksum()\n- Link to RFC v2: https://lore.kernel.org/r/20250925-bpf-xdp-meta-rxcksum-v2-0-6b3fe987ce91@kernel.org\n\nChanges in RFC v2:\n- Squash patch 1/6 and 2/6\n- Introduce enum xdp_checksum definitions\n- Rework ice support to reuse ice_rx_csum codebase\n\n---\nLorenzo Bianconi (5):\n netlink: specs: Add XDP RX checksum capability to XDP metadata specs\n net: veth: Add xmo_rx_checksum callback to veth driver\n net: ice: Add xmo_rx_checksum callback\n selftests/bpf: Add selftest support for bpf_xdp_metadata_rx_checksum\n selftests/bpf: Add bpf_xdp_metadata_rx_checksum support to xdp_hw_metadat prog\n\n Documentation/netlink/specs/netdev.yaml | 5 +\n drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 118 +++++++++++++--------\n drivers/net/veth.c | 29 +++++\n include/net/xdp.h | 13 +++\n include/uapi/linux/netdev.h | 3 +\n net/core/xdp.c | 28 +++++\n tools/include/uapi/linux/netdev.h | 3 +\n .../selftests/bpf/prog_tests/xdp_metadata.c | 6 ++\n .../testing/selftests/bpf/progs/xdp_hw_metadata.c | 8 ++\n tools/testing/selftests/bpf/progs/xdp_metadata.c | 3 +\n tools/testing/selftests/bpf/xdp_hw_metadata.c | 25 +++++\n tools/testing/selftests/bpf/xdp_metadata.h | 12 +++\n 12 files changed, 211 insertions(+), 42 deletions(-)\n---\nbase-commit: 192c0159402e6bfbe13de6f8379546943297783d\nchange-id: 20250925-bpf-xdp-meta-rxcksum-900685e2909d\n\nBest regards,"}