• Phil Sutter's avatar
    net: dummy: Introduce dummy virtual functions · e1636836
    Phil Sutter authored
    The idea for this was born when testing VF support in iproute2 which was
    impeded by hardware requirements. In fact, not every VF-capable hardware
    driver implements all netdev ops, so testing the interface is still hard
    to do even with a well-sorted hardware shelf.
    To overcome this and allow for testing the user-kernel interface, this
    patch allows to turn dummy into a PF with a configurable amount of VFs.
    Since my patch series 'bus-agnostic-num-vf' has been accepted,
    implementing the required interfaces is pretty straightforward: Iff
    'num_vfs' module parameter was given a value >0, a dummy bus type is
    being registered which implements the 'num_vf()' callback. Additionally,
    a dummy parent device common to all dummy devices is registered which
    sits on the above dummy bus.
    Joint work with Sabrina Dubroca.
    Signed-off-by: default avatarSabrina Dubroca <sd@queasysnail.net>
    Signed-off-by: default avatarPhil Sutter <phil@nwl.cc>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
dummy.c 10 KB