• Or Gerlitz's avatar
    IB/mlx5: Enable Eth VFs to query their min-inline value for user-space · 78984898
    Or Gerlitz authored
    For some mlx5 HW models (CX4, CX4Lx), the VF driver needs to put part
    of the packet headers on the TX descriptor so the e-switch can do proper
    matching and steering. This is called "min-inline", it's advertized to
    the VF by the FW and also enforced on them by the HW, such that if they
    don't obey, their packets are dropped.
    
    SRIOV VF libmlx5 instances should take into account the min-inline
    value of their vports. For that end, we provide this value through
    the vendor response part of init_ucontext command.
    
    The min inline value is reported in a way which will let newer libmlx5
    instances realize that they are running over an older kernel and act
    accordingly (e.g apply some educated guess).
    Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
    Reviewed-by: default avatarMatan Barak <matanb@mellanox.com>
    Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
    78984898
main.c 92.3 KB