From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7BA9A322C88 for ; Tue, 10 Feb 2026 11:48:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770724117; cv=none; b=M7wehkq6asWp+kdEHUEGEEX6UMyBHUsnyWNfFfSgEhT1R9RMShPoVQ+5qLO6wDEBvEQzY2+EEr2hHqF2F4YZlWmvqsaZX0fpujYKEIeVta8+xGXUGn+9GRWdL3PQ0+A5GW0OBNyQyzxmuutz9h/OOISQZYIJV1DfvSUkrbqObpc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770724117; c=relaxed/simple; bh=8ZZv4x0mWKh353nLDvnuQWlzARGnj66LH5VUfC2gSYs=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=Vhnf0XIMJvjPLtdNLCEHE82waIQHJUTCdguDRKrGxEoBCAnm+ofL45lUHdxjc6QRtvCmra1TMitKia46OP4ImbJOtAPRWVECKUjZ7KgE8MxzYNvF3Lnyju5NuKdqrCTxV508EoXbfFiGqfR/pd1f62wdL2275tEE12i7iPVoWcY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=QCorfNxP; dkim=pass (2048-bit key) header.d=redhat.com header.i=@redhat.com header.b=bz6G6Tn0; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="QCorfNxP"; dkim=pass (2048-bit key) header.d=redhat.com header.i=@redhat.com header.b="bz6G6Tn0" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1770724114; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8ZZv4x0mWKh353nLDvnuQWlzARGnj66LH5VUfC2gSYs=; b=QCorfNxPX547T2bHVMgmTyroDbUOoEK741ioQJh8/BUZXs+VRLDMMBwLPZ1QbNj0EvBSqn YSJ7sMknAIep1eE/OF1kHWexcOgJTAgT8rfUGNA9xWS9JVduRu0TYXxIwmyqmSdX7KoF5G sNPdf8ubMBZzILFSrTbYyOCL0OwAnRo= Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-630-xUHKe4CbN9qEsYsGAXA60A-1; Tue, 10 Feb 2026 06:48:33 -0500 X-MC-Unique: xUHKe4CbN9qEsYsGAXA60A-1 X-Mimecast-MFC-AGG-ID: xUHKe4CbN9qEsYsGAXA60A_1770724112 Received: by mail-wm1-f69.google.com with SMTP id 5b1f17b1804b1-47edf8ba319so8036365e9.2 for ; Tue, 10 Feb 2026 03:48:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=google; t=1770724112; x=1771328912; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:references :in-reply-to:subject:cc:to:from:from:to:cc:subject:date:message-id :reply-to; bh=8ZZv4x0mWKh353nLDvnuQWlzARGnj66LH5VUfC2gSYs=; b=bz6G6Tn0WdxlxLBr2Fe3uqpN8LNeqvdMDiIcCVGwUtEQ8t4HE/vOQ/yf5XrAa3on95 AA+R3tfJLwfb4HEa6Js8lcKs3pTcr6Zyaglt2mWO01Xf83LuZvNK/lu0MGlQnDfUYAPw cWsl0gAqvn1Q9g0KQt1aEnd8rd5gwL1DT3Oj6uD1/BxElDeXLpbg6Q3eymRyG84zSdhT /IeGDsGLbhQUmnfsxP1qd2pTMSVd223E3RDtufj5MUxFuy3AJ/MhUMmBwM41Mer5N5TY 2QteTcE8iY3g8kYPx4WJOPSWMfJk9S9RjL3UqQjCkjm4tdeQ2G09wmyZfdtOKt5TOkRI f7+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770724112; x=1771328912; h=content-transfer-encoding:mime-version:message-id:date:references :in-reply-to:subject:cc:to:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=8ZZv4x0mWKh353nLDvnuQWlzARGnj66LH5VUfC2gSYs=; b=eFk1L4DT9nLf4Th/s2Jaqb5qSnznTOZWWahcl3REoh0Hb1RmR+6LcNGHl/FcL4rHAO lZPJdp7UnvlCjv8Jr7ZbT6byy3/0RX6jfyS/UoWO4I9FF7iBirbsP8vUZjHLlZCLs29e StCwcvbsBK0ZuSu/UMvhv8xF4qj6D8Z82HPyZiXCxht2zWyf1JeFPKFddF9HS7Y0B10m +V14xaKN/qq97hK+5+4g23xVGqH1bFDmqJmEID+fv/+WXp01f8mfedvyZtiU3HTrIMIg Tho8GTsiFHefMs0XNIceORRFGbZCd6ZHRzFX0wESrkh3jnFraGjA5aW37Oi1/6FvVOlu a0Dg== X-Forwarded-Encrypted: i=1; AJvYcCXVQl2bYX0kXW8kL8cpKjBaKo+wm1UpVq40s+gcDvtXkPdaTJfABGGDU/VwlP2ZgtAJbw97/ZU=@vger.kernel.org X-Gm-Message-State: AOJu0Yys1x7FVaKIdoXsAxYqhclsGIBHRmsoHBfG5Toc5JMJqt6liii+ 6Qajg0BZ5h2y2AHInZRayAfQIjC49Cia+izg212u2eWETBOT+oPt44CP1DP2ZWlgS1KHurx9ubk B8s1UwIdfwgfpgfeynXMJ8Yz/6X+yGu3EsK1YXiGJ5neUMem4+F16aib4wQ== X-Gm-Gg: AZuq6aIvD3YbGHUtnSY4XiwqJmPg84z2OtEKanUsPPa9LZBGnFD5nNS+tTev1lCMBf9 i9U4x5rmHPvFJqfXX5ehY40rHd/F+7iAMsZrQUD4RnpbFoU75EGFk/PovSdktWhRYqSeGcHoH2X 78BnQUThiykkI8XSUZpDKzcZolofE2Z/JBBJNGMuiYADo1768NN8Y70Nlmq+HT0EUeQr6iPnWPu D7Ejc9s75FNND7OF9EckDFLirRYBM3SwulCEHilKlyRZBkeMhqjQ/CxuQ3NPEZv3of2yKP/8z2J oiU38L5xnYfv0UGqVqGL+MBeX26W6luVYYBfBA5fC58pGGdR1dFK4jlDnDb+gNFSoXrY0dDsdpd Q5KYhWn9uwin3DoivsWL35o0navzJhY3n4hEAwytBiXihsA== X-Received: by 2002:a05:600d:6401:20b0:483:498f:7963 with SMTP id 5b1f17b1804b1-483498f7a88mr43201105e9.26.1770724112102; Tue, 10 Feb 2026 03:48:32 -0800 (PST) X-Received: by 2002:a05:600d:6401:20b0:483:498f:7963 with SMTP id 5b1f17b1804b1-483498f7a88mr43200915e9.26.1770724111682; Tue, 10 Feb 2026 03:48:31 -0800 (PST) Received: from alrua-x1.borgediget.toke.dk ([45.145.92.2]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4834d82a4afsm117106035e9.11.2026.02.10.03.48.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Feb 2026 03:48:31 -0800 (PST) Received: by alrua-x1.borgediget.toke.dk (Postfix, from userid 1000) id 4C0454FE899; Tue, 10 Feb 2026 12:48:29 +0100 (CET) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= To: Jesper Dangaard Brouer , netdev@vger.kernel.org, Eric Dumazet , "David S. Miller" , Paolo Abeni Cc: Jesper Dangaard Brouer , bpf@vger.kernel.org, Jakub Kicinski , horms@kernel.org, jiri@resnulli.us, edumazet@google.com, xiyou.wangcong@gmail.com, jhs@mojatatu.com, atenart@redhat.com, carges@cloudflare.com, kernel-team@cloudflare.com Subject: Re: [PATCH net-next v3 2/6] net: sched: sfq: convert to qdisc drop reasons In-Reply-To: <177039506943.2258217.14978587773203412149.stgit@firesoul> References: <177039500964.2258217.2989656069254156812.stgit@firesoul> <177039506943.2258217.14978587773203412149.stgit@firesoul> X-Clacks-Overhead: GNU Terry Pratchett Date: Tue, 10 Feb 2026 12:48:29 +0100 Message-ID: <871piszunm.fsf@toke.dk> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Jesper Dangaard Brouer writes: > Convert SFQ to use the new qdisc-specific drop reason infrastructure. > > This patch demonstrates how to convert a flow-based qdisc to use the > new enum qdisc_drop_reason. As part of this conversion: > > - Add QDISC_DROP_MAXFLOWS for flow table exhaustion > - Rename FQ_FLOW_LIMIT to generic FLOW_LIMIT, now shared by FQ and SFQ > - Use QDISC_DROP_OVERLIMIT for sfq_drop() when overall limit exceeded > - Use QDISC_DROP_FLOW_LIMIT for per-flow depth limit exceeded > > The FLOW_LIMIT reason is now a common drop reason for per-flow limits, > applicable to both FQ and SFQ qdiscs. > > Signed-off-by: Jesper Dangaard Brouer Reviewed-by: Toke H=C3=B8iland-J=C3=B8rgensen