Start of by adding an extra notification when adding a port to a bond, this allows static LAGs to be offloaded using the bonding driver.
Then add the generic support required to offload link aggregates to drivers built on top of the DSA subsystem. Finally, implement offloading for the mv88e6xxx driver, i.e. Marvell's LinkStreet family. Supported LAG implementations: - Bonding - Team Supported modes: - Isolated. The LAG may be used as a regular interface outside of any bridge. - Bridged. The LAG may be added to a bridge, in which case switching is offloaded between the LAG and any other switch ports. I.e. the LAG behaves just like a port from this perspective. In bridged mode, the following is supported: - STP filtering. - VLAN filtering. - Multicast filtering. The bridge correctly snoops IGMP and configures the proper groups if snooping is enabled. Static groups can also be configured. MLD seems to work, but has not been extensively tested. - Unicast filtering. Automatic learning works. Static entries are _not_ supported. This will be added in a later series as it requires some more general refactoring in mv88e6xxx before I can test it. v2 -> v3: - Skip unnecessary RCU protection of the LAG device pointer, as suggested by Vladimir. - Refcount LAGs with a plain refcount_t instead of `struct kref`, as suggested by Vladimir. v1 -> v2: - Allocate LAGs from a static pool to avoid late errors under memory pressure, as suggested by Andrew. RFC -> v1: - Properly propagate MDB operations. - Support for bonding in addition to team. - Fixed a locking bug in mv88e6xxx. - Make sure ports are disabled-by-default in mv88e6xxx. - Support for both DSA and EDSA tagging. Tobias Waldekranz (4): net: bonding: Notify ports about their initial state net: dsa: Link aggregation support net: dsa: mv88e6xxx: Link aggregation support net: dsa: tag_dsa: Support reception of packets from LAG devices drivers/net/bonding/bond_main.c | 2 + drivers/net/dsa/mv88e6xxx/chip.c | 234 +++++++++++++++++++++++++++- drivers/net/dsa/mv88e6xxx/chip.h | 4 + drivers/net/dsa/mv88e6xxx/global2.c | 8 +- drivers/net/dsa/mv88e6xxx/global2.h | 5 + drivers/net/dsa/mv88e6xxx/port.c | 21 +++ drivers/net/dsa/mv88e6xxx/port.h | 5 + include/net/dsa.h | 97 ++++++++++++ net/dsa/dsa.c | 12 +- net/dsa/dsa2.c | 51 ++++++ net/dsa/dsa_priv.h | 31 ++++ net/dsa/port.c | 132 ++++++++++++++++ net/dsa/slave.c | 83 +++++++++- net/dsa/switch.c | 49 ++++++ net/dsa/tag_dsa.c | 17 +- 15 files changed, 735 insertions(+), 16 deletions(-) -- 2.17.1
