Thread (2 messages) flat view 2 messages, 2 authors, 13d ago

Re: [PATCH net v2] net: dsa: mxl862xx: enable assisted learning on CPU port

From: patchwork-bot+netdevbpf@kernel.org
Date: 2026-08-27 19:41:22

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski [off-list ref]:

On Mon, 24 Aug 2026 15:11:43 +0200 you wrote:
The MxL862xx driver enables FDB isolation but does not enable assisted
learning on the CPU port. Consequently, MAC addresses learned through a
physical switch port are not updated in hardware when the corresponding
station moves to a foreign bridge port, such as a Wi-Fi interface.

The stale hardware FDB entry continues directing return traffic toward
the original physical port. Traffic entering that same port is then
filtered instead of being forwarded to the CPU and software bridge. This
causes downstream unicast traffic, including DHCP OFFER and ACK packets,
to disappear after a client roams to a local wireless interface. The
client eventually considers the connection unusable and disconnects.

[...]
Here is the summary with links:
  - [net,v2] net: dsa: mxl862xx: enable assisted learning on CPU port
    https://git.kernel.org/netdev/net/c/88c71cc0ad98

You are awesome, thank you!
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