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envelope-from=intel-wired-lan-bounces@osuosl.org;\n receiver= ","DKIM-Filter":["OpenDKIM Filter v2.11.0 smtp4.osuosl.org 752FE41CD7","OpenDKIM Filter v2.11.0 smtp3.osuosl.org 29C58607E0"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org;\n\ts=default; t=1770996426;\n\tbh=sFkdSYU5SU7oDumKXqm7DY8TaWeqWXh8QYMNmFSOsOY=;\n\th=From:Date:To:Cc:Subject:List-Id:List-Unsubscribe:List-Archive:\n\t List-Post:List-Help:List-Subscribe:From;\n\tb=VsAo8G24ekBnqiJQ2dKVlUew9tIma9LZqHHmBE86zY2sgL3fZNu/nDuqRZBwpTSrw\n\t W/f98FubhiEE39JcgrN/aWt7xBwFKo7on/CdpZVcrMkx8VXr53sqaYn641nvOTpdjU\n\t TWulvkkW7Xh3nA1F4zmX457NjuTqdinub0VAmWHAbR3HN7g4C6Qc0tb2ak7AHwsmP2\n\t fDrwrw6ZcCsMsRAva0qXual6Di8rDubyxskRi3r1iQayYpqRCcIeFQxkqMK+MiYe+N\n\t BB20XIndit02XkhTo/RfG+RaJeWCu0Y7Vxpt77pJrnGwBkUefKuXtEWzI3XgTGZX7o\n\t V9yyGYkUIgpyw==","Received-SPF":"Pass (mailfrom) identity=mailfrom;\n client-ip=2600:3c04:e001:324:0:1991:8:25; helo=tor.source.kernel.org;\n envelope-from=lorenzo@kernel.org; receiver=","DMARC-Filter":"OpenDMARC Filter v1.4.2 smtp3.osuosl.org 29C58607E0","From":"Lorenzo Bianconi ","Date":"Fri, 13 Feb 2026 16:26:19 +0100","Message-Id":"<20260213-bpf-xdp-meta-rxcksum-v2-0-a82c4802afbe@kernel.org>","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","X-B4-Tracking":"v=1; b=H4sIAAAAAAAC/4XNTQ6CMBCG4auYrh0zrRapK+9hXJR2gAb5SYsNh\n nB3C4kLF8bl+yXzzMwCeUeBXXYz8xRdcH2XQux3zNS6qwicTc0EColKSCiGEiY7QEujBj+ZJjx\n bUIhZLkkoVJal08FT6aaNvd1T1y6MvX9tX6JY1z9gFICQFceSVH42pPi1Id/R49D7iq1i5B8lQ\n 8Hxh8KTQtJKabRGefpWlmV5A5ggbkT/AAAA","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=1770996420;\n bh=/B6JgBhqjAE9R1cCIB7J9fbNRvjvEZDD6CRvNZPox4s=;\n h=From:Subject:Date:To:Cc:From;\n b=UB3g8NdqdNaideuG+s8IqIlRFiOwNydc4FJi/QXG6Ltc56VT8nNDZpK9WP8HKoXFN\n UQfH7aDRVeJ8bac4XAd+hLrcLGXyOq0b6S3xtgJSveEKOE6Pl5oN/iAklcSUyCzOJ3\n WbI4BfMGA8MrgxRIghXSYkhX6CUZzmO62jTwSvTfKL7YtQ+q0JnuVhey/HuYP5Das/\n I+JTNW9cuOj0qbwGPBefrvCePe6GxUtZl2tJieQaLhK/FU9H5wiTOM4j5EGoL6gVRL\n /LWpgb+Qwvuw7gsoK0r5PWM0N3KgFTnttRi2Q+mKdfPuV/DayBb1cFPNkkCliEz3lO\n 661LgQ4GITf3g==","X-Mailman-Original-Authentication-Results":["smtp3.osuosl.org;\n dmarc=pass (p=quarantine dis=none)\n header.from=kernel.org","smtp3.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=UB3g8Ndq"],"Subject":"[Intel-wired-lan] [PATCH bpf-next v2 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 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 | 30 ++++++\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, 212 insertions(+), 42 deletions(-)\n---\nbase-commit: 192c0159402e6bfbe13de6f8379546943297783d\nchange-id: 20250925-bpf-xdp-meta-rxcksum-900685e2909d\n\nBest regards,"}