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    SubjectRe: [PATCH net-next 1/3] net: dsa: add MDB support
    On Mon, Aug 29, 2016 at 04:32:44PM -0400, Vivien Didelot wrote:
    > Add SWITCHDEV_OBJ_ID_PORT_MDB support to the DSA layer.
    >
    > Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
    > ---
    > Documentation/networking/dsa/dsa.txt | 23 +++++++++++++++
    > include/net/dsa.h | 16 +++++++++++
    > net/dsa/slave.c | 55 ++++++++++++++++++++++++++++++++++++
    > 3 files changed, 94 insertions(+)
    >
    > diff --git a/Documentation/networking/dsa/dsa.txt b/Documentation/networking/dsa/dsa.txt
    > index 44ed453..6db7bc8 100644
    > --- a/Documentation/networking/dsa/dsa.txt
    > +++ b/Documentation/networking/dsa/dsa.txt
    > @@ -584,6 +584,29 @@ of DSA, would be the its port-based VLAN, used by the associated bridge device.
    > function that the driver has to call for each MAC address known to be behind
    > the given port. A switchdev object is used to carry the VID and FDB info.
    >
    > +- port_mdb_prepare: bridge layer function invoked when the bridge prepares the
    > + installation of a multicast group database entry.

    Hi Vivien

    Terminology question. This function is used to add a multicast MAC
    address to the switch tables. I've always considered a multicast group
    as an IP layer thing. But this documentation is also considering a
    multicast group to be a layer 2 thing.

    Does the bridge code use multicast group when referring to L2?

    Thanks
    Andrew

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