• Brett Creeley's avatar
    ice: Add support for dynamic interrupt moderation · 9e4ab4c2
    Brett Creeley authored
    Currently there is no support for dynamic interrupt moderation. This
    patch adds some initial code to support this. The following changes
    were made:
    
    1. Currently we are using multiple members to store the interrupt
       granularity (itr_gran_25/50/100/200). This is not necessary because
       we can query the device to determine what the interrupt granularity
       should be set to, done by a new function ice_get_itr_intrl_gran.
    
    2. Added intrl to ice_q_vector structure to support interrupt rate
       limiting.
    
    3. Added the function ice_intrl_usecs_to_reg for converting to a value
       in usecs that the device understands.
    
    4. Added call to write to the GLINT_RATE register. Disable intrl by
       default for now.
    
    5. Changed rx/tx_itr_setting to itr_setting because having both seems
       redundant because a ring is either Tx or Rx.
    
    6. Initialize itr_setting for both Tx/Rx rings in ice_vsi_alloc_rings()
    Signed-off-by: default avatarBrett Creeley <brett.creeley@intel.com>
    Signed-off-by: default avatarAnirudh Venkataramanan <anirudh.venkataramanan@intel.com>
    Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
    Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
    9e4ab4c2
ice.h 10.4 KB