• Matan Barak's avatar
    net/mlx4: Add EQ pool · c66fa19c
    Matan Barak authored
    Previously, mlx4_en allocated EQs and used them exclusively.
    This affected RoCE performance, as applications which are
    events sensitive were limited to use only the legacy EQs.
    Change that by introducing an EQ pool. This pool is managed
    by mlx4_core. EQs are assigned to ports (when there are limited
    number of EQs, multiple ports could be assigned to the same EQs).
    An exception to this rule is the ASYNC EQ which handles various events.
    Legacy EQs are completely removed as all EQs could be shared.
    When a consumer (mlx4_ib/mlx4_en) requests an EQ, it asks for
    EQ serving on a specific port. The core driver calculates which
    EQ should be assigned to that request.
    Because IRQs are shared between IB and Ethernet modules, their
    names only include the PCI device BDF address.
    Signed-off-by: default avatarMatan Barak <matanb@mellanox.com>
    Signed-off-by: default avatarIdo Shamay <idos@mellanox.com>
    Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>