On Fri, Jul 01, 2022 at 09:47:24AM +0200, Hans S wrote:
One question though... wouldn't it be an issue that the mentioned option setting is bridge wide, while the patch applies a per-port effect?
Why would it be an issue? To me, the bigger issue is changing the semantics of "locked" in 5.20 compared to previous kernels.
What is even the use case for enabling learning when the port is locked? In current kernels, only SAs from link local traffic will be learned, but with this patch, nothing will be learned. So why enable learning in the first place? As an administrator, I mark a port as "locked" so that only traffic with SAs that I configured will be allowed. Enabling learning when the port is locked seems to defeat the purpose?
It would be helpful to explain why mv88e6xxx needs to have learning enabled in the first place. IIUC, the software bridge can function correctly with learning disabled. It might be better to solve this in mv88e6xxx so that user space would not need to enable learning on the SW bridge and then work around issues caused by it such as learning from link local traffic.