linux-kernel - RE: [RFC PATCH net-next 0/2] Add support for Frame preemption (IEEE

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Date:   Fri, 4 Nov 2022 14:08:25 +0000
From:   "Somisetty, Pranavi" <pranavi.somisetty@....com>
To:     Vladimir Oltean <olteanv@...il.com>
CC:     "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "git (AMD-Xilinx)" <git@....com>,
        "Katakam, Harini" <harini.katakam@....com>,
        "Pandey, Radhey Shyam" <radhey.shyam.pandey@....com>,
        "Simek, Michal" <michal.simek@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [RFC PATCH net-next 0/2] Add support for Frame preemption (IEEE



> -----Original Message-----
> From: Vladimir Oltean <olteanv@...il.com>
> Sent: Friday, November 4, 2022 4:21 AM
> To: Somisetty, Pranavi <pranavi.somisetty@....com>
> Cc: davem@...emloft.net; edumazet@...gle.com; kuba@...nel.org;
> pabeni@...hat.com; git (AMD-Xilinx) <git@....com>; Katakam, Harini
> <harini.katakam@....com>; Pandey, Radhey Shyam
> <radhey.shyam.pandey@....com>; Simek, Michal
> <michal.simek@....com>; linux-kernel@...r.kernel.org;
> netdev@...r.kernel.org
> Subject: Re: [RFC PATCH net-next 0/2] Add support for Frame preemption
> (IEEE
> 
> Hi Pranavi,
> 
> On Thu, Nov 03, 2022 at 05:33:46AM -0600, Pranavi Somisetty wrote:
> > Frame Preemption is one of the core standards of TSN. It enables low
> > latency trasmission of time-critical frames by allowing them to
> > interrupt the transmission of other non time-critical traffic. Frame
> > preemption is only active when the link partner is also capable of it.
> > This negotiation is done using LLDP as specified by the standard. Open
> > source lldp utilities and other applications, can make use of the
> > ioctls and the header being here, to query preemption capabilities and
> > configure various parameters.
> >
> > Pranavi Somisetty (2):
> >   include: uapi: Add new ioctl definitions to support Frame Preemption
> >   include: uapi: Add Frame preemption parameters
> >
> >  include/uapi/linux/preemption_8023br.h | 30
> ++++++++++++++++++++++++++
> >  include/uapi/linux/sockios.h           |  6 ++++++
> >  net/core/dev_ioctl.c                   |  6 +++++-
> >  3 files changed, 41 insertions(+), 1 deletion(-)  create mode 100644
> > include/uapi/linux/preemption_8023br.h
> >
> > --
> > 2.36.1
> >
> 
> Have you seen:
> https://patchwork.kernel.org/project/netdevbpf/cover/20220816222920.195
> 2936-1-vladimir.oltean@....com/

Thanks Vladimir, I hadn't, we will try to use your RFC.

Regards
Pranavi