linux-kernel - Re: [PATCH net-next v4 00/11] net: bridge: mrp: Add support for Media Redundancy Protocol(MRP)

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Date:   Mon, 27 Apr 2020 11:40:50 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     horatiu.vultur@...rochip.com
Cc:     nikolay@...ulusnetworks.com, jiri@...nulli.us, ivecera@...hat.com,
        kuba@...nel.org, roopa@...ulusnetworks.com, olteanv@...il.com,
        andrew@...n.ch, UNGLinuxDriver@...rochip.com,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        bridge@...ts.linux-foundation.org
Subject: Re: [PATCH net-next v4 00/11] net: bridge: mrp: Add support for
 Media Redundancy Protocol(MRP)

From: Horatiu Vultur <horatiu.vultur@...rochip.com>
Date: Sun, 26 Apr 2020 15:21:57 +0200

> Media Redundancy Protocol is a data network protocol standardized by
> International Electrotechnical Commission as IEC 62439-2. It allows rings of
> Ethernet switches to overcome any single failure with recovery time faster than
> STP. It is primarily used in Industrial Ethernet applications.
> 
> Based on the previous RFC[1][2][3][4][5], and patches[6][7][8], the MRP state
> machine and all the timers were moved to userspace, except for the timers used
> to generate MRP Test frames.  In this way the userspace doesn't know and should
> not know if the HW or the kernel will generate the MRP Test frames. The
> following changes were added to the bridge to support the MRP:
> - the existing netlink interface was extended with MRP support,
> - allow to detect when a MRP frame was received on a MRP ring port
> - allow MRP instance to forward/terminate MRP frames
> - generate MRP Test frames in case the HW doesn't have support for this
> 
> To be able to offload MRP support to HW, the switchdev API  was extend.
 ...

Series applied, thank you.