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GET /api/patches/2195300/?format=api
{ "id": 2195300, "url": "http://patchwork.ozlabs.org/api/patches/2195300/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20260210-bpf-xdp-meta-rxcksum-v1-5-e5d55caa0541@kernel.org/", "project": { "id": 46, "url": "http://patchwork.ozlabs.org/api/projects/46/?format=api", "name": "Intel Wired Ethernet development", "link_name": "intel-wired-lan", "list_id": "intel-wired-lan.osuosl.org", "list_email": "intel-wired-lan@osuosl.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260210-bpf-xdp-meta-rxcksum-v1-5-e5d55caa0541@kernel.org>", "list_archive_url": null, "date": "2026-02-10T17:21:51", "name": "[bpf-next,5/5] selftests/bpf: Add bpf_xdp_metadata_rx_checksum support to xdp_hw_metadat prog", "commit_ref": null, "pull_url": null, "state": "handled-elsewhere", "archived": false, "hash": "c30e4fb043b8bbdfbe2458faf6a216c05ee5fba5", "submitter": { "id": 76007, "url": "http://patchwork.ozlabs.org/api/people/76007/?format=api", "name": "Lorenzo Bianconi", "email": "lorenzo@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20260210-bpf-xdp-meta-rxcksum-v1-5-e5d55caa0541@kernel.org/mbox/", "series": [ { "id": 491715, "url": "http://patchwork.ozlabs.org/api/series/491715/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/list/?series=491715", "date": "2026-02-10T17:21:46", "name": "Add the the capability to load HW RX checsum in eBPF programs", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/491715/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2195300/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2195300/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<intel-wired-lan-bounces@osuosl.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256\n header.s=default header.b=p18BWTAb;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=2605:bc80:3010::136; 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envelope-from=intel-wired-lan-bounces@osuosl.org;\n receiver=<UNKNOWN> ", "DKIM-Filter": [ "OpenDKIM Filter v2.11.0 smtp3.osuosl.org 6AFDA60DA5", "OpenDKIM Filter v2.11.0 smtp4.osuosl.org 589FB41163" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org;\n\ts=default; t=1770744142;\n\tbh=r155W0YIp6yUWmU14jE801T/0y8NRLesXjBujXCved0=;\n\th=From:Date:References:In-Reply-To:To:Cc:Subject:List-Id:\n\t List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe:\n\t From;\n\tb=p18BWTAb7qMfs5iA9bQOqL5NXa0XXoqeTahD3WktFDY5feqJW9QZo85dAKIyonDPn\n\t 6dxKX5x9myIcHY5RpnC4kuSKKYiWGJ+av4CQbzkgYlJ6TxCKVRIS6qsC/vRBhuTYb9\n\t CYi0f2V16GQnaWo5+3W0YhEWYnkQ2+i9eYJYl5/b1u+bKXePAMP1+RLRHZz8ar3s4b\n\t o813vVeCUvZzzPtFHcNdW/gBse1EzSAr4w/ZhwVRRpnPAls/nDFcKWgzae4UMdmpaN\n\t S8x5r97xqgQSz7IKt31bRpfT5wTEAHnXbRNYJtEJ3ReWG9L9WlBQr3fS4jX5xTd+LW\n\t HoZMXj9GR6oWg==", "Received-SPF": "Pass (mailfrom) identity=mailfrom; client-ip=172.105.4.254;\n helo=tor.source.kernel.org; envelope-from=lorenzo@kernel.org;\n receiver=<UNKNOWN>", "DMARC-Filter": "OpenDMARC Filter v1.4.2 smtp4.osuosl.org 589FB41163", "From": "Lorenzo Bianconi <lorenzo@kernel.org>", "Date": "Tue, 10 Feb 2026 18:21:51 +0100", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260210-bpf-xdp-meta-rxcksum-v1-5-e5d55caa0541@kernel.org>", "References": "<20260210-bpf-xdp-meta-rxcksum-v1-0-e5d55caa0541@kernel.org>", "In-Reply-To": "<20260210-bpf-xdp-meta-rxcksum-v1-0-e5d55caa0541@kernel.org>", "To": "Donald Hunter <donald.hunter@gmail.com>,\n Jakub Kicinski <kuba@kernel.org>, \"David S. Miller\" <davem@davemloft.net>,\n Eric Dumazet <edumazet@google.com>, Paolo Abeni <pabeni@redhat.com>,\n Simon Horman <horms@kernel.org>, Alexei Starovoitov <ast@kernel.org>,\n Daniel Borkmann <daniel@iogearbox.net>,\n Jesper Dangaard Brouer <hawk@kernel.org>,\n John Fastabend <john.fastabend@gmail.com>,\n Stanislav Fomichev <sdf@fomichev.me>, Andrew Lunn <andrew+netdev@lunn.ch>,\n Tony Nguyen <anthony.l.nguyen@intel.com>,\n Przemek Kitszel <przemyslaw.kitszel@intel.com>,\n Alexander Lobakin <aleksander.lobakin@intel.com>,\n Andrii Nakryiko <andrii@kernel.org>,\n Martin KaFai Lau <martin.lau@linux.dev>,\n Eduard Zingerman <eddyz87@gmail.com>, Song Liu <song@kernel.org>,\n Yonghong Song <yonghong.song@linux.dev>, KP Singh <kpsingh@kernel.org>,\n Hao Luo <haoluo@google.com>, Jiri Olsa <jolsa@kernel.org>,\n Shuah Khan <shuah@kernel.org>,\n Maciej Fijalkowski <maciej.fijalkowski@intel.com>", "Cc": "Jakub Sitnicki <jakub@cloudflare.com>, netdev@vger.kernel.org,\n bpf@vger.kernel.org, intel-wired-lan@lists.osuosl.org,\n linux-kselftest@vger.kernel.org, Lorenzo Bianconi <lorenzo@kernel.org>", "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=1770744137;\n bh=YeOpAiaT58KYK6hzmVoXzdp05TldJdth7tHhp/RBBwI=;\n h=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n b=DcN1cZ8MIVrVizEdckIkDsj+vkfGTjCcdrVG8PXfF8icyC1RXK1DgpKeHJ+xNeldA\n 4aJAKr0+nxaa6lhZx5q9XECPUJoT57pOnnASJjoYU3/OvIdYtSIZnsLRyt8IBc1lh2\n s8xeuebxE9sJwEId85fna95BVhQH+2ON0MOlmHVy7E3i0S3n+ivCYe7ybA/JJdr4P+\n JOgIhd6ve8DEy42YiHVIesy461KPrUnHAe2dPptYKrfEs9KAz7SF+74734kmWvyc+q\n C8lY2Umv5kGboxo1pCn+V8/SFlXyeWX+bnoi1C+qDntiS7EhJ/5JRXnvhA6gHLrtgW\n BcRLIVwxZSBeA==", "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,\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=DcN1cZ8M" ], "Subject": "[Intel-wired-lan] [PATCH bpf-next 5/5] selftests/bpf: Add\n bpf_xdp_metadata_rx_checksum support to xdp_hw_metadat prog", "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 <intel-wired-lan.osuosl.org>", "List-Unsubscribe": "<https://lists.osuosl.org/mailman/options/intel-wired-lan>,\n <mailto:intel-wired-lan-request@osuosl.org?subject=unsubscribe>", "List-Archive": "<http://lists.osuosl.org/pipermail/intel-wired-lan/>", "List-Post": "<mailto:intel-wired-lan@osuosl.org>", "List-Help": "<mailto:intel-wired-lan-request@osuosl.org?subject=help>", "List-Subscribe": "<https://lists.osuosl.org/mailman/listinfo/intel-wired-lan>,\n <mailto:intel-wired-lan-request@osuosl.org?subject=subscribe>", "Errors-To": "intel-wired-lan-bounces@osuosl.org", "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@osuosl.org>" }, "content": "Introduce the capability to dump HW rx checksum in xdp_hw_metadat\nprogram via bpf_xdp_metadata_rx_checksum() kfunc.\n\nSigned-off-by: Lorenzo Bianconi <lorenzo@kernel.org>\n---\n .../testing/selftests/bpf/progs/xdp_hw_metadata.c | 7 ++++++\n tools/testing/selftests/bpf/xdp_hw_metadata.c | 28 ++++++++++++++++++++++\n tools/testing/selftests/bpf/xdp_metadata.h | 10 +++++---\n 3 files changed, 42 insertions(+), 3 deletions(-)", "diff": "diff --git a/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c b/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c\nindex 330ece2eabdb454da2bb2cbd297d2b2dd6efddc0..dc62d572e3ac6e2ef173b330da515757ea543415 100644\n--- a/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c\n+++ b/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c\n@@ -110,6 +110,13 @@ int rx(struct xdp_md *ctx)\n \telse\n \t\tmeta->hint_valid |= XDP_META_FIELD_VLAN_TAG;\n \n+\terr = bpf_xdp_metadata_rx_checksum(ctx, &meta->ip_summed,\n+\t\t\t\t\t &meta->cksum_meta);\n+\tif (err)\n+\t\tmeta->rx_cksum_err = err;\n+\telse\n+\t\tmeta->hint_valid |= XDP_META_FIELD_CHECKSUM;\n+\n \t__sync_add_and_fetch(&pkts_redir, 1);\n \treturn bpf_redirect_map(&xsk, ctx->rx_queue_index, XDP_PASS);\n }\ndiff --git a/tools/testing/selftests/bpf/xdp_hw_metadata.c b/tools/testing/selftests/bpf/xdp_hw_metadata.c\nindex 3d8de0d4c96a7afdf5f60b2fdff73c22b876ce54..5f4bd63b8a31586353e58e4f6472ee8ac9531a06 100644\n--- a/tools/testing/selftests/bpf/xdp_hw_metadata.c\n+++ b/tools/testing/selftests/bpf/xdp_hw_metadata.c\n@@ -8,6 +8,7 @@\n * - Metadata verified:\n * - rx_timestamp\n * - rx_hash\n+ * - rx_checksum\n *\n * TX:\n * - UDP 9091 packets trigger TX reply\n@@ -219,6 +220,28 @@ static void print_vlan_tci(__u16 tag)\n \tprintf(\"PCP=%u, DEI=%d, VID=0x%X\\n\", pcp, dei, vlan_id);\n }\n \n+static void print_rx_cksum(__u8 ip_summed, __u32 cksum_meta)\n+{\n+\tconst char *cksum = \"CHECKSUM_NONE\";\n+\n+\tswitch (ip_summed) {\n+\tcase XDP_CHECKSUM_UNNECESSARY:\n+\t\tcksum = \"CHECKSUM_UNNECESSARY\";\n+\t\tbreak;\n+\tcase XDP_CHECKSUM_COMPLETE:\n+\t\tcksum = \"CHECKSUM_COMPLETE\";\n+\t\tbreak;\n+\tcase XDP_CHECKSUM_PARTIAL:\n+\t\tcksum = \"CHECKSUM_PARTIAL\";\n+\t\tbreak;\n+\tcase XDP_CHECKSUM_NONE:\n+\tdefault:\n+\t\tbreak;\n+\t}\n+\n+\tprintf(\"rx-cksum: %s, csum_meta=0x%x\\n\", cksum, cksum_meta);\n+}\n+\n static void verify_xdp_metadata(void *data, clockid_t clock_id)\n {\n \tstruct xdp_meta *meta;\n@@ -254,6 +277,11 @@ static void verify_xdp_metadata(void *data, clockid_t clock_id)\n \t\tprintf(\"No rx_vlan_tci or rx_vlan_proto, err=%d\\n\",\n \t\t meta->rx_vlan_tag_err);\n \t}\n+\n+\tif (meta->hint_valid & XDP_META_FIELD_CHECKSUM)\n+\t\tprint_rx_cksum(meta->ip_summed, meta->cksum_meta);\n+\telse\n+\t\tprintf(\"No rx_chsum, err=%d\\n\", meta->rx_cksum_err);\n }\n \n static void verify_skb_metadata(int fd)\ndiff --git a/tools/testing/selftests/bpf/xdp_metadata.h b/tools/testing/selftests/bpf/xdp_metadata.h\nindex a16f71488a34e6df23fec6dd7dde7b7989774618..b7ab112da8032405ec0e3d699499f4a9c5cb91dc 100644\n--- a/tools/testing/selftests/bpf/xdp_metadata.h\n+++ b/tools/testing/selftests/bpf/xdp_metadata.h\n@@ -28,6 +28,7 @@ enum xdp_meta_field {\n \tXDP_META_FIELD_TS\t= BIT(0),\n \tXDP_META_FIELD_RSS\t= BIT(1),\n \tXDP_META_FIELD_VLAN_TAG\t= BIT(2),\n+\tXDP_META_FIELD_CHECKSUM = BIT(3),\n };\n \n #define XDP_CHECKSUM_NONE\t\t0\n@@ -53,9 +54,12 @@ struct xdp_meta {\n \t\t};\n \t\t__s32 rx_vlan_tag_err;\n \t};\n-\tstruct {\n-\t\t__u8 ip_summed;\n-\t\t__u32 cksum_meta;\n+\tunion {\n+\t\tstruct {\n+\t\t\t__u8 ip_summed;\n+\t\t\t__u32 cksum_meta;\n+\t\t};\n+\t\t__s32 rx_cksum_err;\n \t};\n \tenum xdp_meta_field hint_valid;\n };\n", "prefixes": [ "bpf-next", "5/5" ] }