• James Smart's avatar
    scsi: lpfc: add RDF registration and Link Integrity FPIN logging · df3fe766
    James Smart authored
    This patch modifies lpfc to register for Link Integrity events via the use
    of an RDF ELS and to perform Link Integrity FPIN logging.
    
    Specifically, the driver was modified to:
    
     - Format and issue the RDF ELS immediately following SCR registration.
       This registers the ability of the driver to receive FPIN ELS.
    
     - Adds decoding of the FPIN els into the received descriptors, with
       logging of the Link Integrity event information. After decoding, the ELS
       is delivered to the scsi fc transport to be delivered to any user-space
       applications.
    
     - To aid in logging, simple helpers were added to create enum to name
       string lookup functions that utilize the initialization helpers from the
       fc_els.h header.
    
     - Note: base header definitions for the ELS's don't populate the
       descriptor payloads. As such, lpfc creates it's own version of the
       structures, using the base definitions (mostly headers) and additionally
       declaring the descriptors that will complete the population of the ELS.
    
    Link: https://lore.kernel.org/r/20200210173155.547-3-jsmart2021@gmail.comSigned-off-by: default avatarDick Kennedy <dick.kennedy@broadcom.com>
    Signed-off-by: default avatarJames Smart <jsmart2021@gmail.com>
    Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
    df3fe766
lpfc.h 44.6 KB