RE: [EXTERNAL] Re: [net-next PATCH v2 7/9] octeontx2-pf: Add support to sync link state between representor and VFs

[Geethasowjanya Akula]

> -----Original Message-----
> From: Jiri Pirko <jiri@xxxxxxxxxxx>
> Sent: Tuesday, April 23, 2024 6:37 PM
> To: Geethasowjanya Akula <gakula@xxxxxxxxxxx>
> Cc: netdev@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; kuba@xxxxxxxxxx;
> davem@xxxxxxxxxxxxx; pabeni@xxxxxxxxxx; edumazet@xxxxxxxxxx; Sunil
> Kovvuri Goutham <sgoutham@xxxxxxxxxxx>; Subbaraya Sundeep Bhatta
> <sbhatta@xxxxxxxxxxx>; Hariprasad Kelam <hkelam@xxxxxxxxxxx>
> Subject: [EXTERNAL] Re: [net-next PATCH v2 7/9] octeontx2-pf: Add support to
> sync link state between representor and VFs
> 
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> ----------------------------------------------------------------------
> Mon, Apr 22, 2024 at 11:53:59AM CEST, gakula@xxxxxxxxxxx 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.
> 
> Could you please elaborate a bit more how exactly this behaves? Examples
> would help.
> 
We patch implement the below requirement mentioned the representors documentation.
Eg: ip link set r0p1 up/down  will disable carrier on/off of the corresponding 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.
"

> 
> >- 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 VF.
> >