From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
To: Horatiu Vultur <horatiu.vultur@microchip.com>,
davem@davemloft.net, jiri@resnulli.us, ivecera@redhat.com,
kuba@kernel.org, roopa@cumulusnetworks.com, olteanv@gmail.com,
andrew@lunn.ch, UNGLinuxDriver@microchip.com,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
bridge@lists.linux-foundation.org
Subject: Re: [RFC net-next v4 0/9] net: bridge: mrp: Add support for Media Redundancy Protocol(MRP)
Date: Mon, 30 Mar 2020 19:21:41 +0300 [thread overview]
Message-ID: <15dcc261-bcbb-ec67-2d8d-4208dda45b86@cumulusnetworks.com> (raw)
In-Reply-To: <20200327092126.15407-1-horatiu.vultur@microchip.com>
On 27/03/2020 11:21, Horatiu Vultur wrote:
> 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], 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.
>
> With these changes the userspace doesn't do the following because already the
> kernel/HW will do:
> - doesn't need to forward/terminate MRP frames
> - doesn't need to generate MRP Test frames
> - doesn't need to detect when the ring is open/closed.
>
> The userspace application that is using the new netlink can be found here[4].
>
Hi Horatiu,
One issue in general - some functions are used before they're defined (the switchdev
API integration ones) patch 4 vs 7 which doesn't make sense. Also I see that the BRIDGE_MRP is used
(ifdef) before it's added to the Kconfig which doesn't make much sense either.
I think you should rearrange the patches and maybe combine some of them.
Thanks,
Nik
next prev parent reply other threads:[~2020-03-30 16:21 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-27 9:21 [RFC net-next v4 0/9] net: bridge: mrp: Add support for Media Redundancy Protocol(MRP) Horatiu Vultur
2020-03-27 9:21 ` [RFC net-next v4 1/9] bridge: uapi: mrp: Add mrp attributes Horatiu Vultur
2020-03-27 9:21 ` [RFC net-next v4 2/9] bridge: mrp: Expose function br_mrp_port_open Horatiu Vultur
2020-03-27 9:21 ` [RFC net-next v4 3/9] bridge: mrp: Add MRP interface Horatiu Vultur
2020-03-27 9:21 ` [RFC net-next v4 4/9] bridge: mrp: Implement netlink interface to configure MRP Horatiu Vultur
2020-03-30 15:30 ` Nikolay Aleksandrov
2020-04-01 15:39 ` Horatiu Vultur
2020-03-27 9:21 ` [RFC net-next v4 5/9] switchdev: mrp: Extend switchdev API to offload MRP Horatiu Vultur
2020-03-27 9:21 ` [RFC net-next v4 6/9] bridge: switchdev: mrp Implement MRP API for switchdev Horatiu Vultur
2020-03-27 9:21 ` [RFC net-next v4 7/9] bridge: mrp: Connect MRP api with the switchev API Horatiu Vultur
2020-03-30 16:11 ` Nikolay Aleksandrov
2020-04-01 16:06 ` Horatiu Vultur
2020-04-01 16:32 ` Nikolay Aleksandrov
2020-04-02 14:18 ` Horatiu Vultur
2020-04-02 14:29 ` Nikolay Aleksandrov
2020-04-02 18:14 ` Horatiu Vultur
2020-03-27 9:21 ` [RFC net-next v4 8/9] bridge: mrp: Integrate MRP into the bridge Horatiu Vultur
2020-03-30 16:16 ` Nikolay Aleksandrov
2020-04-01 16:10 ` Horatiu Vultur
2020-04-01 16:33 ` Nikolay Aleksandrov
2020-04-02 13:46 ` Horatiu Vultur
2020-03-27 9:21 ` [RFC net-next v4 9/9] bridge: mrp: Update Kconfig and Makefile Horatiu Vultur
2020-03-30 16:21 ` Nikolay Aleksandrov [this message]
2020-04-01 16:12 ` [RFC net-next v4 0/9] net: bridge: mrp: Add support for Media Redundancy Protocol(MRP) Horatiu Vultur
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