From: Vivien Didelot <vivien.dide...@savoirfairelinux.com> Date: Wed, 7 Jun 2017 18:12:12 -0400
> The current code in DSA does not support cross-chip VLAN. This means > that in a multi-chip environment such as this one (similar to ZII Rev B) ... > adding a VLAN to p9 won't be enough to reach the CPU, until at least one > port of sw0 and sw1 join the VLAN as well and become aware of the VID. > > This patchset makes the DSA core program the VLAN on the CPU and DSA > links itself, which brings seamlessly cross-chip VLAN support to DSA. > > With this series applied*, the hardware VLAN tables of a 3-switch setup > look like this after adding a VLAN to only one port of the end switch: ... > Completely removing a VLAN entry (which is currently the responsibility > of drivers anyway) is not supported yet since it requires some caching. > > (*) the output is shown from this out-of-tree debugfs patch: > https://github.com/vivien/linux/commit/7b61a684b9d6b6a499135a587c7f62a1fddceb8b.patch > > Changes in v2: > - canonical incrementation (port++ instead of ++port) > - check CPU and DSA ports before purging a VLAN > - add Reviewed-by tags Series applied, thanks Vivien.
