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From: Geethasowjanya Akula <gakula@marvell.com>
To: Jiri Pirko <jiri@resnulli.us>
CC: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "kuba@kernel.org" <kuba@kernel.org>,
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	<davem@davemloft.net>,
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        Sunil Kovvuri Goutham
	<sgoutham@marvell.com>,
        Subbaraya Sundeep Bhatta <sbhatta@marvell.com>,
        Hariprasad Kelam <hkelam@marvell.com>
Subject: RE: [EXTERNAL] Re: [net-next PATCH v2 7/9] octeontx2-pf: Add support
 to sync link state between representor and VFs
Thread-Topic: [EXTERNAL] Re: [net-next PATCH v2 7/9] octeontx2-pf: Add support
 to sync link state between representor and VFs
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Date: Tue, 23 Apr 2024 16:09:02 +0000
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> -----Original Message-----
> From: Jiri Pirko <jiri@resnulli.us>
> Sent: Tuesday, April 23, 2024 6:37 PM
> To: Geethasowjanya Akula <gakula@marvell.com>
> Cc: netdev@vger.kernel.org; linux-kernel@vger.kernel.org; kuba@kernel.org=
;
> davem@davemloft.net; pabeni@redhat.com; edumazet@google.com; Sunil
> Kovvuri Goutham <sgoutham@marvell.com>; Subbaraya Sundeep Bhatta
> <sbhatta@marvell.com>; Hariprasad Kelam <hkelam@marvell.com>
> Subject: [EXTERNAL] Re: [net-next PATCH v2 7/9] octeontx2-pf: Add support=
 to
> sync link state between representor and VFs
>=20
> Prioritize security for external emails: Confirm sender and content safet=
y
> before clicking links or opening attachments
>=20
> ----------------------------------------------------------------------
> Mon, Apr 22, 2024 at 11:53:59AM CEST, gakula@marvell.com wrote:
> >Implements mbox function to sync the link state between VFs and its
> >representors. Same mbox is use to notify other updates like mtu etc.
> >
> >This patch enables
> >- Reflecting the link state of representor based on the VF state and
> >link state of VF based on representor.
>=20
> Could you please elaborate a bit more how exactly this behaves? Examples
> would help.
>=20
We patch implement the below requirement mentioned the representors documen=
tation.
Eg: ip link set r0p1 up/down  will disable carrier on/off of the correspond=
ing representee(eth0) interface.


"
The representee's link state is controlled through the representor. Setting=
 the representor administratively UP or DOWN should cause carrier ON or OFF=
 at the representee.
"

>=20
> >- On VF interface up/down a notification is sent via mbox to
> >representor
> >  to update the link state.
> >- On representor interafce up/down will cause the link state update of V=
F.
> >