• Joe Eykholt's avatar
    [SCSI] libfc: make rport structure optional · f211fa51
    Joe Eykholt authored
    
    
    Allow a struct fc_rport_priv to have no fc_rport associated with it.
    This sets up to remove the need for "rogue" rports.
    
    Add a few fields to fc_rport_priv that are needed before the fc_rport
    is created.  These are the ids, maxframe_size, classes, and rport pointer.
    
    Remove the macro PRIV_TO_RPORT().  Just use rdata->rport where appropriate.
    
    To take the place of the get_device()/put_device ops that were used to
    hold both the rport and rdata, add a reference count to rdata structures
    using kref.  When kref_get decrements the refcount to zero, a new template
    function releasing the rdata should be called.  This will take care of
    freeing the rdata and releasing the hold on the rport (for now).  After
    subsequent patches make the rport truly optional, this release function
    will simply free the rdata.
    
    Remove the simple inline function fc_rport_set_name(), which becomes
    semanticly ambiguous otherwise.  The caller will set the port_name and
    node_name in the rdata->Ids, which will later be copied to the rport
    when it its created.
    Signed-off-by: default avatarJoe Eykholt <jeykholt@cisco.com>
    Signed-off-by: default avatarRobert Love <robert.w.love@intel.com>
    Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
    f211fa51
libfc.h 28 KB