This series attempts to make DSA VLANs work in the presence of a master interface that is: - filtering, so it drops VLANs that aren't explicitly added to its filter list - offloading, so the old assumptions in the tagging code about there being a VLAN tag in the skb are not necessarily true anymore.
For more context: https://lore.kernel.org/netdev/20200910150738.mwhh2i6j2qgacqev@skbuf/ This probably marks the beginning of a series of patches in which DSA starts paying much more attention to its upper interfaces, not only for VLAN purposes but also for address filtering and for management of the CPU flooding domain. There was a comment from Florian on whether we could factor some of the mlxsw logic into some common functionality, but it doesn't look so. This seems bound to be open-coded, but frankly there isn't a lot to it. Vladimir Oltean (9): net: dsa: deny enslaving 802.1Q upper to VLAN-aware bridge from PRECHANGEUPPER net: dsa: rename dsa_slave_upper_vlan_check to something more suggestive net: dsa: convert check for 802.1Q upper when bridged into PRECHANGEUPPER net: dsa: convert denying bridge VLAN with existing 8021q upper to PRECHANGEUPPER net: dsa: refuse configuration in prepare phase of dsa_port_vlan_filtering() net: dsa: allow 8021q uppers while the bridge has vlan_filtering=0 net: dsa: install VLANs into the master's RX filter too net: dsa: tag_8021q: add VLANs to the master interface too net: dsa: tag_sja1105: add compatibility with hwaccel VLAN tags drivers/net/dsa/sja1105/sja1105_main.c | 7 +- include/linux/dsa/8021q.h | 2 + net/dsa/port.c | 58 +++++++-- net/dsa/slave.c | 156 ++++++++++++++++++------- net/dsa/switch.c | 41 ------- net/dsa/tag_8021q.c | 20 +++- net/dsa/tag_sja1105.c | 21 +++- 7 files changed, 206 insertions(+), 99 deletions(-) -- 2.25.1
