Current implementation of the SW bridge is setting the interfaces in promisc mode when they are added to bridge if learning of the frames is enabled. In case of Ocelot which has HW capabilities to switch frames, it is not needed to set the ports in promisc mode because the HW already capable of doing that. Therefore add NETIF_F_HW_BRIDGE feature to indicate that the HW has bridge capabilities. Therefore the SW bridge doesn't need to set the ports in promisc mode to do the switching. This optimization takes places only if all the interfaces that are part of the bridge have this flag and have the same network driver. If the bridge interfaces is added in promisc mode then also the ports part of the bridge are set in promisc mode. Horatiu Vultur (3): net: Add HW_BRIDGE offload feature net: mscc: Use NETIF_F_HW_BRIDGE net: mscc: Implement promisc mode. drivers/net/ethernet/mscc/ocelot.c | 26 ++++++++++++++++++++++++-- include/linux/netdev_features.h | 3 +++ net/bridge/br_if.c | 29 ++++++++++++++++++++++++++++- net/core/ethtool.c | 1 + 4 files changed, 56 insertions(+), 3 deletions(-) -- 2.7.4
