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From: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
To: Jesper Dangaard Brouer <hawk@kernel.org>,
	Song Yoong Siang <yoong.siang.song@intel.com>,
	"David S . Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Jonathan Corbet <corbet@lwn.net>, Bjorn Topel <bjorn@kernel.org>,
	Magnus Karlsson <magnus.karlsson@intel.com>,
	Maciej Fijalkowski <maciej.fijalkowski@intel.com>,
	Jonathan Lemon <jonathan.lemon@gmail.com>,
	Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	John Fastabend <john.fastabend@gmail.com>,
	Stanislav Fomichev <sdf@google.com>,
	Lorenzo Bianconi <lorenzo@kernel.org>,
	Tariq Toukan <tariqt@nvidia.com>,
	Willem de Bruijn <willemb@google.com>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Andrii Nakryiko <andrii@kernel.org>,
	Mykola Lysenko <mykolal@fb.com>,
	Martin KaFai Lau <martin.lau@linux.dev>,
	Song Liu <song@kernel.org>,
	Yonghong Song <yonghong.song@linux.dev>,
	KP Singh <kpsingh@kernel.org>, Hao Luo <haoluo@google.com>,
	Jiri Olsa <jolsa@kernel.org>, Shuah Khan <shuah@kernel.org>,
	Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Jose Abreu <joabreu@synopsys.com>
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
Subject: [xdp-hints] Re: [PATCH bpf-next v3 3/3] selftests/bpf: add Launch Time request to xdp_hw_metadata
Date: Mon, 04 Dec 2023 09:59:31 -0500	[thread overview]
Message-ID: <656de953bcc82_2e983e2949a@willemb.c.googlers.com.notmuch> (raw)
In-Reply-To: <8e20031c-83cb-4927-ab6a-e6b4840e1e42@kernel.org>

Jesper Dangaard Brouer wrote:
> 
> 
> 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?

Judging from how we currently use this with FQ and ETF, no.

See for instance tools/testing/selftests/net/so_txtime.sh


  reply	other threads:[~2023-12-04 14:59 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-03 16:51 [xdp-hints] [PATCH bpf-next v3 0/3] xsk: TX metadata Launch Time support Song Yoong Siang
2023-12-03 16:51 ` [xdp-hints] [PATCH bpf-next v3 1/3] xsk: add Launch Time HW offload to XDP Tx metadata Song Yoong Siang
2023-12-03 16:51 ` [xdp-hints] [PATCH bpf-next v3 2/3] net: stmmac: add Launch Time support to XDP ZC Song Yoong Siang
2023-12-04 10:36   ` [xdp-hints] " Jesper Dangaard Brouer
2023-12-04 11:54     ` Florian Bezdeka
2023-12-04 14:54     ` Willem de Bruijn
2023-12-05 15:25       ` Song, Yoong Siang
2023-12-05 15:34         ` Florian Bezdeka
2023-12-05 17:13           ` Stanislav Fomichev
2023-12-05 18:03             ` Willem de Bruijn
2023-12-05 19:39               ` Stanislav Fomichev
2023-12-05 20:01                 ` Willem de Bruijn
2023-12-06 10:06                 ` Magnus Karlsson
2023-12-06 19:06                   ` Stanislav Fomichev
2023-12-18  2:54                     ` Song, Yoong Siang
2023-12-03 16:51 ` [xdp-hints] [PATCH bpf-next v3 3/3] selftests/bpf: add Launch Time request to xdp_hw_metadata Song Yoong Siang
2023-12-04 10:16   ` [xdp-hints] " Jesper Dangaard Brouer
2023-12-04 14:59     ` Willem de Bruijn [this message]
2023-12-05 14:55       ` Song, Yoong Siang

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