From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794347143; b=do3XZy9icFCgxE0JP76XCdJUmtgMcagPDyI7CPISjoBeN2lfVKq1DoJHlEis1hwygQku XgX4KC1ET8cwqsLnid4nZj1J4mvdN9JoupZJdIX8atiVK2uV0ka6BlHTeEC0A2bOBGcGb CJ+ZdGXed4klNxXlqOYTr5qjH1oIp2NU+2G0ZE8vEYJsIC7AseiBQ02Btto/TaPxrydGY 7M49u/pXs6RNtIwpN9m2OUCiTyxVw6DNmdx9iYp3rDbLSeZpCa78z+27Y2KU9eGXd7J8P 0KW5wplB+eQwt617fvceoJNeYj2wdE+5oI/tcietgbXjHca1JKCCiguKkXrK1TQ3nlw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794347143; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-ID: In-Reply-To:References:MIME-Version:Content-Type: Content-Transfer-Encoding; bh=35fQk2prx0lBB02/47r4mEUB8fpBOI29YWOfBrE+Kf0=; b=kMaNSjdu44hStqcU+0GE+wmxhODw62KKr+FO3Be+rLExyefVf3YJcE2STcTnpahaKsRh Owe08Bn89tNsI1FGm9EXZ7jLNLwpOg9Qgm39BJmfBnZrO1Bvs6r03/VNhnjYsUGHbsc07 Jb2pkTtAmogcC/0pG5vghz02GbEz/bsEItTOZYecctCoIMTuHVtA969NSo3fYZ//7E2EA rzqgQLJl1eMseubAsPz3XtCzUPF3wF099sV/xFodcDr7xUx8BlPGApzve3Amvr6DLgWAw Z7P2wFiusyrsj7iTrdsNL2UDzAIH25RW7snzROfEYZfuRsO8h1o1nzfG9Yq4y2Km8wg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=kymx3Z5Q; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B85DF606A321; Tue, 10 Nov 2026 21:45:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=kymx3Z5Q Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5EBBE1F0089F; Tue, 10 Nov 2026 21:45:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794347142; bh=35fQk2prx0lBB02/47r4mEUB8fpBOI29YWOfBrE+Kf0=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=kymx3Z5QuLjhVt9c5TXAk+kfoV9+Q69m2rh6gKaY2iciQySjWz776ENyyzO76ntE/ /uzWTdV8hdYbQdh1l4IyeQ5fyyv9r2cCWu0qjO5wH2a+J4S0bzy6nNaTA6trhTE0GW /L1dwdPvEztraG/h+sVCOy641h7Uk/TMwO2q4hRzVBg/Rkxmb7cReJ+LatfFNQPTkP 6patrVaXaDmYcM/GxuvUQx3acPjDDOm/3QA23frVW+hN4rGRkeHMgbj+Hzf1wrVZRK Mzim6bafAA11Nz4YojXw6wG9MXECjIaGYV2Ai4JM+kIAL0NrS4PfdlrklEcr67vMyR y6wV8M99tyxhQ== Date: Tue, 10 Nov 2026 13:45:39 -0800 From: Jakub Kicinski To: Ding Meng Cc: netdev@vger.kernel.org, Willem de Bruijn , "David S. Miller" , Eric Dumazet , Paolo Abeni , Jonathan Corbet , Andrew Lunn , Tony Nguyen , Przemek Kitszel , Steven Rostedt , Masami Hiramatsu , Daniel Borkmann , Alexei Starovoitov , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , Richard Cochran , florian.bezdeka@siemens.com, jan.kiszka@siemens.com, wq.wang@siemens.com, p@1g4.org, gerhard@engleder-embedded.com, Jason Xing , Simon Horman , Shuah Khan , Randy Dunlap , Mathieu Desnoyers , Martin KaFai Lau , Song Liu , Yonghong Song , Jiri Olsa , Emil Tsalapatis , Ihor Solodrai , John Fastabend , Stanislav Fomichev , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, intel-wired-lan@lists.osuosl.org, linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org Subject: Re: [PATCH] net: mark skb NAPI IDs independently of busy polling Message-ID: <20261110134539.12d860ef@kernel.org> In-Reply-To: <20261105071706.7043-1-meng.ding@siemens.com> References: <20261105071706.7043-1-meng.ding@siemens.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Thu, 5 Nov 2026 15:16:08 +0800 Ding Meng wrote: > + interface index will be returned only if CONFIG_SKB_MARK_NAPI_ID is > + enabled and the driver is using NAPI. This hidden configuration is > + selected automatically by busy-poll support and by drivers that need > + skb NAPI IDs to resolve deferred hardware timestamps. Drivers that > + use deferred timestamp conversion must select it so the networking > + stack can find the device and call its timestamp callback even when > + busy polling is disabled. The struct contains also two other fields, > + but they are reserved and undefined. Just take napi_id from under CONFIG_NET_RX_BUSY_POLL instead of complicating everyone's lives. -- pw-bot: cr