netdev - Re: [PATCH net-next 2/2] bridge: mrp: Add support for role MRA

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Message-ID: <20200529121811.583003cc@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net>
Date:   Fri, 29 May 2020 12:18:11 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Horatiu Vultur <horatiu.vultur@...rochip.com>
Cc:     <nikolay@...ulusnetworks.com>, <roopa@...ulusnetworks.com>,
        <jiri@...nulli.us>, <ivecera@...hat.com>, <davem@...emloft.net>,
        <UNGLinuxDriver@...rochip.com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <bridge@...ts.linux-foundation.org>
Subject: Re: [PATCH net-next 2/2] bridge: mrp: Add support for role MRA

On Fri, 29 May 2020 10:05:14 +0000 Horatiu Vultur wrote:
> A node that has the MRA role, it can behave as MRM or MRC.
> 
> Initially it starts as MRM and sends MRP_Test frames on both ring ports.
> If it detects that there are MRP_Test send by another MRM, then it
> checks if these frames have a lower priority than itself. In this case
> it would send MRP_Nack frames to notify the other node that it needs to
> stop sending MRP_Test frames.
> If it receives a MRP_Nack frame then it stops sending MRP_Test frames
> and starts to behave as a MRC but it would continue to monitor the
> MRP_Test frames send by MRM. If at a point the MRM stops to send
> MRP_Test frames it would get the MRM role and start to send MRP_Test
> frames.
> 
> Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>

net/bridge/br_mrp.c:542:20: warning: cast to restricted __be16
net/bridge/br_mrp.c:542:20: warning: cast to restricted __be16
net/bridge/br_mrp.c:542:20: warning: cast to restricted __be16
net/bridge/br_mrp.c:542:20: warning: cast to restricted __be16