RTnet plan to support qdisc, zero copy, XDP?

Peter Wong tsnuser at outlook.com
Thu Sep 10 08:34:43 CEST 2020


The plan is to have new xenomai socket API for send RT traffic to xenomai core network stack -> then to linux driver?

There is switching overhead between cobalt and linux ?
________________________________
From: Jan Kiszka <jan.kiszka at siemens.com>
Sent: Wednesday, September 9, 2020 4:05 PM
To: Peter Wong <tsnuser at outlook.com>; xenomai at xenomai.org <xenomai at xenomai.org>
Subject: Re: RTnet plan to support qdisc, zero copy, XDP?

On 07.09.20 03:45, Peter Wong via Xenomai wrote:
> Is there any plan for support qdisc, zero copy, XDP in RTnet?
>

Plans aren't concrete yet, but renovation (or replacement) of RTnet is
needed, specifically to support TSN. Ideally, we do that with maximum
reuse of kernel infrastructure, "just" adding the fast-path access from
an RT application. Or we look into reusing DPDK which is gaining TSN
support as well and has a Linux-free data path already.

Jan

--
Siemens AG, Corporate Technology, CT RDA IOT SES-DE
Corporate Competence Center Embedded Linux


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