• James Smart's avatar
    scsi: lpfc: small sg cnt cleanup · 81e6a637
    James Smart authored
    The logic for sg_seg_cnt is a bit convoluted. This patch tries to clean
    up a couple of areas, especially around the +2 and +1 logic.
    
    This patch:
    
    - Cleans up the lpfc_sg_seg_cnt attribute to specify a real minimum
      rather than making the minimum be whatever the default is.
    
    - Removes the hardcoding of +2 (for the number of elements we use in a
      sgl for cmd iu and rsp iu) and +1 (an additional entry to compensate
      for nvme's reduction of io size based on a possible partial page)
      logic in sg list initialization. In the case where the +1 logic is
      referenced in host and target io checks, use the values set in the
      transport template as that value was properly set.
    
    There can certainly be more done in this area and it will be addressed
    in combined host/target driver effort.
    Signed-off-by: default avatarDick Kennedy <dick.kennedy@broadcom.com>
    Signed-off-by: default avatarJames Smart <james.smart@broadcom.com>
    Reviewed-by: default avatarHannes Reinecke <hare@suse.com>
    Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
    81e6a637
lpfc_init.c 362 KB