From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by mail.toke.dk (Postfix) with ESMTPS id DEBE8A430B4 for ; Mon, 4 Dec 2023 11:16:59 +0100 (CET) Authentication-Results: mail.toke.dk; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=gj60O4w3 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 1644D60FCD; Mon, 4 Dec 2023 10:16:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CF9B7C433C7; Mon, 4 Dec 2023 10:16:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701685017; bh=NvabCPUoEeNgkHlQOh++f/IpiYrFxijeYof5NfRPONE=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=gj60O4w3gXfZMoRfR6TVuuBMVNHiyEh6nUNydfFfRtKH2vJhhhVuUfP9Y4+rhdY5B zjCUTsbEh5i2w9D6MgQWx68op4BJuUViJcr9vihhIQ8pM0QJhsxRJLcvyPKCr6mmvh 2fi5L0nxX4kFshYlSuzPTS0BbZwOLeu6gZ3GQp0LhzILev3EvwzL6CIBTA/cDwOP5S DE1a4L0ovYgsibC0R82gwV80GU4EzfF3khZdF8IufKrqTVx7GteEKxJT8Lh7qC0oMP fXKPG9TSggDDEaNpqmO1xTH+Yafxw1vMknRluaszrrr6d4GsKEX1oH+EnHBEKjkV1g wSPOvEgh46O1A== Message-ID: <8e20031c-83cb-4927-ab6a-e6b4840e1e42@kernel.org> Date: Mon, 4 Dec 2023 11:16:48 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: Song Yoong Siang , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jonathan Corbet , Bjorn Topel , Magnus Karlsson , Maciej Fijalkowski , Jonathan Lemon , Alexei Starovoitov , Daniel Borkmann , John Fastabend , Stanislav Fomichev , Lorenzo Bianconi , Tariq Toukan , Willem de Bruijn , Maxime Coquelin , Andrii Nakryiko , Mykola Lysenko , Martin KaFai Lau , Song Liu , Yonghong Song , KP Singh , Hao Luo , Jiri Olsa , Shuah Khan , Alexandre Torgue , Jose Abreu References: <20231203165129.1740512-1-yoong.siang.song@intel.com> <20231203165129.1740512-4-yoong.siang.song@intel.com> From: Jesper Dangaard Brouer In-Reply-To: <20231203165129.1740512-4-yoong.siang.song@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Message-ID-Hash: NT6RM3LWBSXRSEHROJU7JBFOJGIFA56A X-Message-ID-Hash: NT6RM3LWBSXRSEHROJU7JBFOJGIFA56A X-MailFrom: hawk@kernel.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, bpf@vger.kernel.org, xdp-hints@xdp-project.net, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org X-Mailman-Version: 3.3.8 Precedence: list Subject: [xdp-hints] Re: [PATCH bpf-next v3 3/3] selftests/bpf: add Launch Time request to xdp_hw_metadata List-Id: XDP hardware hints design discussion Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On 12/3/23 17:51, Song Yoong Siang wrote: > This patch is tested with stmmac on Intel Tiger Lake platform. Refer to > result below, the delta between pre-determined launch time and actual HW > transmit complete time is around 24 us. Is there any NIC setup (e.g. ethtool/qdisc) requirements to enable HW for this feature? --Jesper