From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f173.google.com (mail-pl1-f173.google.com [209.85.214.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 75D732D600 for ; Tue, 11 Feb 2025 03:15:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739243711; cv=none; b=FP43o0R16xzqyrnK9OngC6QHIYMztUpxR/r/R2PVQDdbjMc2cRXyWvpas8v/vpyTDMY02qVZW0gg8BP3h6aAID8N7bQx4gZXfepS569I0ymaNSucjHx22O3WZV7Ad2uMPx0hol0e1uoWxxnXPOVvP5oGQROrbWh001Hs1BMcX9A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739243711; c=relaxed/simple; bh=13k6LCcCb5+sF7UQbEq3q6gkRLL9onQSDkVtjpfIdxU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=atfAuicw/828IzkYs89FauYSWLwJsz8LoD4+Y1nGLTuftdC+bFeyr3QYlWZX3gxuKhj/tZOvIibc/Npntr/Di5FitC62dw2b5eliRliF11AVdcTpfVUbXbacLKmVB0x10qzyLv1PI5+fKxXlC3heTQDSvaGBiD8+EQHKyfWBJYs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fastly.com; spf=pass smtp.mailfrom=fastly.com; dkim=pass (1024-bit key) header.d=fastly.com header.i=@fastly.com header.b=GKlxAoiY; arc=none smtp.client-ip=209.85.214.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fastly.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fastly.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=fastly.com header.i=@fastly.com header.b="GKlxAoiY" Received: by mail-pl1-f173.google.com with SMTP id d9443c01a7336-21fa56e1583so22392415ad.3 for ; Mon, 10 Feb 2025 19:15:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fastly.com; s=google; t=1739243710; x=1739848510; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references :mail-followup-to:message-id:subject:cc:to:from:date:from:to:cc :subject:date:message-id:reply-to; bh=l1kP+XWZTOkAajPber64+I/sNCVI/eizySysH4dcPnI=; b=GKlxAoiYhzHG15xJDtIgvsoYuynoKrquXeZhlhR735GxX6InwVRpLZpKMvQwdc+e4f o0d50HIoK7DZnTm1PF+4OOsd6j4yVw1pysNdRoo808IxZAEi6/yesTjChs4xoe7sNqbZ kKk3JSrP+yp76TTT4M6CA5ZyHL7isEGEWLEbI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1739243710; x=1739848510; h=in-reply-to:content-disposition:mime-version:references :mail-followup-to:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=l1kP+XWZTOkAajPber64+I/sNCVI/eizySysH4dcPnI=; b=CPcjPkOd+4u+YEklr0C30mql52n7uERKXzjT82ku863ZqSua/vYC83U48QJYOU08Kp km0W9Yy1kNARySxkeTR2XgSW0443fSXZy7RLZulYPfI7bpf+vNVY3CfypFRMvYrD5dYU x9U+dN9ZwfTJuHiKwpqjG7vQqMeXq49ATemuXnPgxcTc/6RX/y9ZCTrTxJZHCyrjtr7U rz6GhmcMoqiZLTtk7qGNTtjFWVQfQ3psbyqPln50ec9fIpEYsds11hIj4gVD0PNcSpid F6+ojJBVokZdpySqprmtIaiO2X/iZ5Ihkq1lxOqVN8Hdx2K2F9iKoWYNtlBTxIzlXxnh itHQ== X-Forwarded-Encrypted: i=1; AJvYcCUNS6cmPL3jumewyFIzP7ilznSpaVZMwOE5D4XUt9BuSprF8I7Sxap31b5oqdwrfWULwcw5qLM=@vger.kernel.org X-Gm-Message-State: AOJu0Yz3Lz2y/+kOTbV1IEnYHolhscfeDbG5ESIsDd6AVUNvQza20fiJ R/xzZli4F06bz4Z8L1baprkgCz+GFYr1Gtq24q9Kx2BTVbNMSsDBPNMH/4z6WH4= X-Gm-Gg: ASbGncv1na+ZbaHLHtn3gHA9a9l40k0vPeV/VUGdKpWA8RoUU6LAevsMZrvWgoak4ri lkJSeIv7AoYfxtJanIlZ5jBTR3vkP3W0WAIk0oDI5LkTPsa5tO8RJvfCPVENSyd+yKZuJ075CQQ azpt+SIEU41kypVQ28/4q3852Q9j8KtLWkstcv7ODFVtaE0bevcTwbSV1WmWuMCvuRHMZjKbUXI /hBOEgJcJhU3DWn31ifEuJIiwFyBF8aJXMabNHtrSUhAVzth0gurW72iaI7e3ZkrYG8/gV11sVG 0QZ360AlhKI3v/DNrns6Gsn/LtkdaainOFdLVVEksvek3qJIzy5AkF4PYDesa74= X-Google-Smtp-Source: AGHT+IELYS0mgNiIgF09/UGSX5ndAImM0FhA9QaK3O1rhuAZR7Qa6bUo3XbZmbsTOscqHOLk72pZ2A== X-Received: by 2002:a17:902:c941:b0:21f:8099:72de with SMTP id d9443c01a7336-21f809974b2mr116223295ad.45.1739243709678; Mon, 10 Feb 2025 19:15:09 -0800 (PST) Received: from LQ3V64L9R2 (c-24-6-151-244.hsd1.ca.comcast.net. [24.6.151.244]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21f368cff88sm86052585ad.242.2025.02.10.19.15.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Feb 2025 19:15:09 -0800 (PST) Date: Mon, 10 Feb 2025 19:15:06 -0800 From: Joe Damato To: Kurt Kanzenbach Cc: Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Sebastian Andrzej Siewior , intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org Subject: Re: [PATCH 0/3] igb: XDP/ZC follow up Message-ID: Mail-Followup-To: Joe Damato , Kurt Kanzenbach , Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Sebastian Andrzej Siewior , intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org References: <20250210-igb_irq-v1-0-bde078cdb9df@linutronix.de> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250210-igb_irq-v1-0-bde078cdb9df@linutronix.de> On Mon, Feb 10, 2025 at 10:19:34AM +0100, Kurt Kanzenbach wrote: > This is a follow up for the igb XDP/ZC implementation. The first two > patches link the IRQs and queues to NAPI instances. This is required to > bring back the XDP/ZC busy polling support. The last patch removes > undesired IRQs (injected via igb watchdog) while busy polling with > napi_defer_hard_irqs and gro_flush_timeout set. You may want to use netif_napi_add_config to enable persistent NAPI config, btw. This makes writing userland programs based on SO_INCOMING_NAPI_ID much easier. See also: https://lore.kernel.org/netdev/20250208012822.34327-1-jdamato@fastly.com/