• Alan Brady's avatar
    i40e: Enable VF to negotiate number of allocated queues · a3f5aa90
    Alan Brady authored
    Currently the PF allocates a default number of queues for each VF and
    cannot be changed.  This patch enables the VF to request a different
    number of queues allocated to it.  This patch also adds a new virtchnl
    op and capability flag to facilitate this negotiation.
    
    After the PF receives a request message, it will set a requested number
    of queues for that VF.  Then when the VF resets, its VSI will get a new
    number of queues allocated to it.
    
    This is a best effort request and since we only allocate a guaranteed
    default number, if the VF tries to ask for more than the guaranteed
    number, there may not be enough in HW to accommodate it unless other
    queues for other VFs are freed. It should also be noted decreasing the
    number queues allocated to a VF to below the default will NOT enable the
    allocation of more than 32 VFs per PF and will not free queues guaranteed
    to each VF by default.
    Signed-off-by: default avatarAlan Brady <alan.brady@intel.com>
    Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
    Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
    a3f5aa90
i40e_virtchnl_pf.h 4.73 KB