RE: [PATCH bpf-next 1/3] xsk: add launch time support to XDP Tx metadata

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Subject: RE: [PATCH bpf-next 1/3] xsk: add launch time support to XDP Tx metadata
From: "Song, Yoong Siang" <yoong.siang.song@xxxxxxxxx>
Date: Sun, 3 Dec 2023 08:58:05 +0000
Accept-language: en-US
Cc: "David S . Miller" <davem@xxxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>, Paolo Abeni <pabeni@xxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Bjorn Topel <bjorn@xxxxxxxxxx>, "Karlsson, Magnus" <magnus.karlsson@xxxxxxxxx>, "Fijalkowski, Maciej" <maciej.fijalkowski@xxxxxxxxx>, Jonathan Lemon <jonathan.lemon@xxxxxxxxx>, Alexei Starovoitov <ast@xxxxxxxxxx>, Daniel Borkmann <daniel@xxxxxxxxxxxxx>, Jesper Dangaard Brouer <hawk@xxxxxxxxxx>, John Fastabend <john.fastabend@xxxxxxxxx>, Stanislav Fomichev <sdf@xxxxxxxxxx>, "Lorenzo Bianconi" <lorenzo@xxxxxxxxxx>, Tariq Toukan <tariqt@xxxxxxxxxx>, "Willem de Bruijn" <willemb@xxxxxxxxxx>, Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>, Andrii Nakryiko <andrii@xxxxxxxxxx>, Mykola Lysenko <mykolal@xxxxxx>, "Martin KaFai Lau" <martin.lau@xxxxxxxxx>, Song Liu <song@xxxxxxxxxx>, Yonghong Song <yonghong.song@xxxxxxxxx>, KP Singh <kpsingh@xxxxxxxxxx>, Hao Luo <haoluo@xxxxxxxxxx>, Jiri Olsa <jolsa@xxxxxxxxxx>, Shuah Khan <shuah@xxxxxxxxxx>, Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx>, "Jose Abreu" <joabreu@xxxxxxxxxxxx>, "netdev@xxxxxxxxxxxxxxx" <netdev@xxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-doc@xxxxxxxxxxxxxxx" <linux-doc@xxxxxxxxxxxxxxx>, "bpf@xxxxxxxxxxxxxxx" <bpf@xxxxxxxxxxxxxxx>, "xdp-hints@xxxxxxxxxxxxxxx" <xdp-hints@xxxxxxxxxxxxxxx>, "linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx" <linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>, "linux-arm-kernel@xxxxxxxxxxxxxxxxxxx" <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>, "linux-kselftest@xxxxxxxxxxxxxxx" <linux-kselftest@xxxxxxxxxxxxxxx>
In-reply-to: <20231201192846.15c9e64e@kernel.org>
Thread-index: AQHaI6lNhMbclA0v6kGITaNu3vmUTbCVV/0AgAHtsgA=
Thread-topic: [PATCH bpf-next 1/3] xsk: add launch time support to XDP Tx metadata

On Saturday, December 2, 2023 11:29 AM, Jakub Kicinski wrote:
>On Fri,  1 Dec 2023 00:20:26 +0800 Song Yoong Siang wrote:
>> +        name: launch-time
>> +        doc:
>> +          HW Time-Based Scheduling (TBS) is supported by the driver.
>
>Does this mean fifo "gating" or HW can do reordering?

Yes, HW will do reordering according to the value of launch time.

References:
- [PATCH bpf-next 0/3] xsk: TX metadata launch time support
  - From: Song Yoong Siang
- [PATCH bpf-next 1/3] xsk: add launch time support to XDP Tx metadata
  - From: Song Yoong Siang
- Re: [PATCH bpf-next 1/3] xsk: add launch time support to XDP Tx metadata
  - From: Jakub Kicinski

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