• Jens Remus's avatar
    scsi: zfcp: trace FC Endpoint Security of FCP devices and connections · 616da39e
    Jens Remus authored
    Trace changes in Fibre Channel Endpoint Security capabilities of FCP
    devices as well as changes in Fibre Channel Endpoint Security state of
    their connections to FC remote ports as FC Endpoint Security changes with
    trace level 3 in HBA DBF.
    
    A change in FC Endpoint Security capabilities of FCP devices is traced as
    response to FSF command FSF_QTCB_EXCHANGE_PORT_DATA with a trace tag of
    "fsfcesa" and a WWPN of ZFCP_DBF_INVALID_WWPN = 0x0000000000000000 (see
    FC-FS-4 §18 "Name_Identifier Formats", NAA field).
    
    A change in FC Endpoint Security state of connections between FCP devices
    and FC remote ports is traced as response to FSF command
    FSF_QTCB_OPEN_PORT_WITH_DID with a trace tag of "fsfcesp".
    
    Example trace record of FC Endpoint Security capability change of FCP
    device formatted with zfcpdbf from s390-tools:
    
    Timestamp      : ...
    Area           : HBA
    Subarea        : 00
    Level          : 3
    Exception      : -
    CPU ID         : ...
    Caller         : 0x...
    Record ID      : 5                    ZFCP_DBF_HBA_FCES
    Tag            : fsfcesa              FSF FC Endpoint Security adapter
    Request ID     : 0x...
    Request status : 0x00000010
    FSF cmnd       : 0x0000000e           FSF_QTCB_EXCHANGE_PORT_DATA
    FSF sequence no: 0x...
    FSF issued     : ...
    FSF stat       : 0x00000000           FSF_GOOD
    FSF stat qual  : n/a
    Prot stat      : n/a
    Prot stat qual : n/a
    Port handle    : 0x00000000           none (invalid)
    LUN handle     : n/a
    WWPN           : 0x0000000000000000   ZFCP_DBF_INVALID_WWPN
    FCES old       : 0x00000000           old FC Endpoint Security
    FCES new       : 0x00000007           new FC Endpoint Security
    
    Example trace record of FC Endpoint Security change of connection to
    FC remote port formatted with zfcpdbf from s390-tools:
    
    Timestamp      : ...
    Area           : HBA
    Subarea        : 00
    Level          : 3
    Exception      : -
    CPU ID         : ...
    Caller         : 0x...
    Record ID      : 5                    ZFCP_DBF_HBA_FCES
    Tag            : fsfcesp              FSF FC Endpoint Security port
    Request ID     : 0x...
    Request status : 0x00000010
    FSF cmnd       : 0x00000005           FSF_QTCB_OPEN_PORT_WITH_DID
    FSF sequence no: 0x...
    FSF issued     : ...
    FSF stat       : 0x00000000           FSF_GOOD
    FSF stat qual  : n/a
    Prot stat      : n/a
    Prot stat qual : n/a
    Port handle    : 0x...
    WWPN           : 0x500507630401120c   WWPN
    FCES old       : 0x00000000           old FC Endpoint Security
    FCES new       : 0x00000004           new FC Endpoint Security
    
    Link: https://lore.kernel.org/r/20200312174505.51294-9-maier@linux.ibm.comReviewed-by: default avatarSteffen Maier <maier@linux.ibm.com>
    Signed-off-by: default avatarJens Remus <jremus@linux.ibm.com>
    Signed-off-by: default avatarSteffen Maier <maier@linux.ibm.com>
    Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
    616da39e
zfcp_dbf.c 25.3 KB