This series introduces an explicit API through which switchdev drivers mark a bridge port as offloaded or not: - switchdev_bridge_port_offload() - switchdev_bridge_port_unoffload() Currently, the bridge assumes that a port is offloaded if dev_get_port_parent_id(dev, &ppid, recurse=true) returns something, but that is just an assumption that breaks some use cases (like a non-offloaded LAG interface on top of a switchdev port, bridged with other switchdev ports). Along with some consolidation of the bridge logic to assign a "switchdev offloading mark" to a port (now better called a "hardware domain"), this series allows the bridge driver side to no longer impose restrictions on that configuration. Right now, all switchdev drivers must be modified to use the explicit API, but more and more logic can then be placed centrally in the bridge and therefore ease the job of a switchdev driver writer in the future. For example, the first thing we can hook into the explicit switchdev offloading API calls are the switchdev object and FDB replay helpers. So far, these have only been used by DSA in "pull" mode (where the driver must ask for them). Adding the replay helpers to other drivers involves a lot of repetition. But by moving the helpers inside the bridge port offload/unoffload hook points, we can move the entire replay process to "push" mode (where the bridge provides them automatically). The explicit switchdev offloading API will see further extensions in the future. The patches were split from a larger series for easier review: https://patchwork.kernel.org/project/netdevbpf/cover/20210718214434.3938850-1-vladimir.oltean@xxxxxxx/ Tobias Waldekranz (2): net: bridge: disambiguate offload_fwd_mark net: bridge: switchdev: recycle unused hwdoms Vladimir Oltean (8): net: dpaa2-switch: use extack in dpaa2_switch_port_bridge_join net: dpaa2-switch: refactor prechangeupper sanity checks mlxsw: spectrum: refactor prechangeupper sanity checks mlxsw: spectrum: refactor leaving an 8021q upper that is a bridge port net: marvell: prestera: refactor prechangeupper sanity checks net: switchdev: guard drivers against multiple obj replays on same bridge port net: bridge: switchdev: let drivers inform which bridge ports are offloaded net: bridge: switchdev object replay helpers for everybody .../ethernet/freescale/dpaa2/dpaa2-switch.c | 69 +++- .../ethernet/marvell/prestera/prestera_main.c | 99 +++-- .../marvell/prestera/prestera_switchdev.c | 42 ++- .../marvell/prestera/prestera_switchdev.h | 7 +- .../net/ethernet/mellanox/mlxsw/spectrum.c | 347 ++++++++++++------ .../net/ethernet/mellanox/mlxsw/spectrum.h | 4 + .../mellanox/mlxsw/spectrum_switchdev.c | 28 +- .../microchip/sparx5/sparx5_switchdev.c | 48 ++- drivers/net/ethernet/mscc/ocelot_net.c | 115 ++++-- drivers/net/ethernet/rocker/rocker.h | 9 +- drivers/net/ethernet/rocker/rocker_main.c | 34 +- drivers/net/ethernet/rocker/rocker_ofdpa.c | 42 ++- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 34 +- drivers/net/ethernet/ti/am65-cpsw-switchdev.c | 14 +- drivers/net/ethernet/ti/am65-cpsw-switchdev.h | 3 + drivers/net/ethernet/ti/cpsw_new.c | 32 +- drivers/net/ethernet/ti/cpsw_switchdev.c | 4 +- drivers/net/ethernet/ti/cpsw_switchdev.h | 3 + include/linux/if_bridge.h | 60 +-- net/bridge/br_fdb.c | 1 - net/bridge/br_if.c | 11 +- net/bridge/br_mdb.c | 1 - net/bridge/br_private.h | 61 ++- net/bridge/br_switchdev.c | 254 +++++++++++-- net/bridge/br_vlan.c | 1 - net/dsa/port.c | 83 ++--- 26 files changed, 1059 insertions(+), 347 deletions(-) -- 2.25.1
