• Andrew Vasquez's avatar
    [SCSI] qla2xxx: Add Fibre Channel Event (FCE) tracing support. · df613b96
    Andrew Vasquez authored
    
    
    FCE support enables the firmware to record FC extended link
    services and basic link services frames which have been
    transmitted and received by the ISP.  This allows for a limited
    view of the FC traffic through the ISP without using a FC
    analyzer.  This can be useful in situations where a physical
    connection to the FC bus is not possible.
    
    The driver exports this information in two ways -- first, via a
    debugfs node exported for all supported ISPs under:
    
    	<debugfs_mount_point>/qla2xxx/qla2xxx_<host_no>/fce
    
    where a read of the 'fce' file will provide a snapshot of the
    firmware's FCE buffer; and finally, the FCE buffer will be
    extracted during a firmware-dump scenario.
    Signed-off-by: default avatarAndrew Vasquez <andrew.vasquez@qlogic.com>
    Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
    df613b96
qla_mbx.c 70.3 KB