Re: [PATCH 0/3] net: renesas: rswitch: R-Car S4 add HW offloading for layer 2 switching

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On Fri, Jul 04, 2025 at 07:51:14AM +0200, Michael Dege wrote:
> Hello!
> 
> The current R-Car S4 rswitch driver only supports port based fowarding.
> This patch set adds HW offloading for L2 switching/bridgeing. The driver
> hooks into switchdev.
> 
> 1. Rename the base driver file to keep the driver name (rswitch.ko)
> 
> 2. Add the L2 driver extension in a separate file. The HW offloading
> is automatically configured when a port is added to the bridge device.
> 
> Ussage example:
> ip link add name br type bridge
> ip link set dev tsn0 master br
> ip link set dev tsn1 master br
> ip link set dev br up
> ip link set dev tsn0 up
> ip link set dev tsn1 up

Looking at the code, it is not clear to me what would happen with:

ip link add name br0 type bridge
ip link set dev tsn0 master br0
ip link set dev br0 up
ip link set dev tsn0 up
ip link add name br1 type bridge
ip link set dev tsn1 master br1
ip link set dev br1 up
ip link set dev tsn1 up

   Andrew




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