Hi David, On Mon, 4 May 2020 at 01:12, Vladimir Oltean <olte...@gmail.com> wrote: > > From: Vladimir Oltean <vladimir.olt...@nxp.com> > > This series adds support for boards where DSA switches of multiple types > are cascaded together. Actually this type of setup was brought up before > on netdev, and it looks like utilizing disjoint trees is the way to go: > > https://lkml.org/lkml/2019/7/7/225 > > The trouble with disjoint trees (prior to this patch series) is that only > bridging of ports within the same hardware switch can be offloaded. > After scratching my head for a while, it looks like the easiest way to > support hardware bridging between different DSA trees is to bridge their > DSA masters and extend the crosschip bridging operations. > > I have given some thought to bridging the DSA masters with the slaves > themselves, but given the hardware topology described in the commit > message of patch 4/4, virtually any number (and combination) of bridges > (forwarding domains) can be created on top of those 3x4-port front-panel > switches. So it becomes a lot less obvious, when the front-panel ports > are enslaved to more than 1 bridge, which bridge should the DSA masters > be enslaved to. > > So the least awkward approach was to just create a completely separate > bridge for the DSA masters, whose entire purpose is to permit hardware > forwarding between the discrete switches beneath it. > > v1 was submitted here: > https://patchwork.ozlabs.org/project/netdev/cover/20200429161952.17769-1-olte...@gmail.com/ > > v2 was submitted here: > https://patchwork.ozlabs.org/project/netdev/cover/20200430202542.11797-1-olte...@gmail.com/ > > Vladimir Oltean (4): > net: bridge: allow enslaving some DSA master network devices > net: dsa: permit cross-chip bridging between all trees in the system > net: dsa: introduce a dsa_switch_find function > net: dsa: sja1105: implement cross-chip bridging operations > > drivers/net/dsa/mv88e6xxx/chip.c | 16 ++- > drivers/net/dsa/sja1105/sja1105.h | 2 + > drivers/net/dsa/sja1105/sja1105_main.c | 90 +++++++++++++++ > include/linux/dsa/8021q.h | 45 ++++++++ > include/net/dsa.h | 13 ++- > net/bridge/br_if.c | 32 ++++-- > net/bridge/br_input.c | 23 +++- > net/bridge/br_private.h | 6 +- > net/dsa/dsa2.c | 21 ++++ > net/dsa/dsa_priv.h | 1 + > net/dsa/port.c | 23 +++- > net/dsa/switch.c | 21 +++- > net/dsa/tag_8021q.c | 151 +++++++++++++++++++++++++ > 13 files changed, 414 insertions(+), 30 deletions(-) > > -- > 2.17.1 >
What does it mean that this series is "deferred" in patchwork? Thanks, -Vladimir
