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{ "id": 2215613, "url": "http://patchwork.ozlabs.org/api/covers/2215613/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netfilter-devel/cover/20260324204016.2089193-1-anzaki@gmail.com/", "project": { "id": 26, "url": "http://patchwork.ozlabs.org/api/projects/26/?format=api", "name": "Netfilter Development", "link_name": "netfilter-devel", "list_id": "netfilter-devel.vger.kernel.org", "list_email": "netfilter-devel@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260324204016.2089193-1-anzaki@gmail.com>", "list_archive_url": null, "date": "2026-03-24T20:40:14", "name": "[nf-next,v2,0/2] Update (DSA) netdev stats with offloaded flows", "submitter": { "id": 77450, "url": "http://patchwork.ozlabs.org/api/people/77450/?format=api", "name": "Ahmed Zaki", "email": "anzaki@gmail.com" }, "mbox": "http://patchwork.ozlabs.org/project/netfilter-devel/cover/20260324204016.2089193-1-anzaki@gmail.com/mbox/", "series": [ { "id": 497346, "url": "http://patchwork.ozlabs.org/api/series/497346/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netfilter-devel/list/?series=497346", "date": "2026-03-24T20:40:16", "name": "Update (DSA) netdev stats with offloaded flows", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/497346/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2215613/comments/", "headers": { "Return-Path": "\n <netfilter-devel+bounces-11385-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "netfilter-devel@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=TEW6a62u;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; helo=sea.lore.kernel.org;\n envelope-from=netfilter-devel+bounces-11385-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)", "smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com\n header.b=\"TEW6a62u\"", "smtp.subspace.kernel.org;\n arc=none smtp.client-ip=209.85.128.46", "smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com", "smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=gmail.com" ], "Received": [ "from sea.lore.kernel.org (sea.lore.kernel.org [172.234.253.10])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fgMYM5jkCz1y1G\n\tfor <incoming@patchwork.ozlabs.org>; Wed, 25 Mar 2026 07:47:35 +1100 (AEDT)", "from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sea.lore.kernel.org (Postfix) with ESMTP id C65FD30EDFBC\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 24 Mar 2026 20:41:29 +0000 (UTC)", "from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id 42F4E3563F0;\n\tTue, 24 Mar 2026 20:41:28 +0000 (UTC)", "from mail-wm1-f46.google.com (mail-wm1-f46.google.com\n [209.85.128.46])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id 9C5433559D6\n\tfor <netfilter-devel@vger.kernel.org>; Tue, 24 Mar 2026 20:41:26 +0000 (UTC)", "by mail-wm1-f46.google.com with SMTP id\n 5b1f17b1804b1-4852b81c73aso39431615e9.3\n for <netfilter-devel@vger.kernel.org>;\n Tue, 24 Mar 2026 13:41:26 -0700 (PDT)", "from azaki-desk1.. 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The delegating drivers cannot collect or report\nthe offloaded flows stats since they have no access to the underlying\nhardware. This breaks SNMP-based network monitoring systems that rely on\nnetdev stats to report the network traffic.\n\nFix by moving the offloaded flow stat reporting to the nft flowtable\nsubsystem. The first patch adds a new stats field \"fstats\" to net_device\nthat is allocated and updated by the nft subsystem only if the new\nflag \"flow_offload_via_parent\" is set by the driver. It also report these\nstats back to the user in dev_get_stats().\n\nPatch 2 sets the new flag \"flow_offload_via_parent\" for the DSA driver.\n---\nv2: - added the new \"net_device->fstats\" field since the existing\n tstats cannot be used since it would double-count on devices that\n already use tstats for hardware MIBs (P1).\n - fixed the outdev ifindex logic based. See new func\n \"flow_offload_egress_ifidx()\" in P1.\n\nAhmed Zaki (2):\n netfilter: flowtable: update netdev stats with HW_OFFLOAD flows\n net: dsa: update net_device stats with HW offloaded flows stats\n\n include/linux/netdevice.h | 45 ++++++++++++\n net/core/dev.c | 8 +++\n net/dsa/user.c | 1 +\n net/netfilter/nf_flow_table_offload.c | 98 +++++++++++++++++++++++++--\n 4 files changed, 146 insertions(+), 6 deletions(-)" }