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2007-05-26[SCSI] fc_transport: fix sysfs deadlock on vport deleteJames Smart1-63/+63
When the vport attribute "delete" is used to delete the vport, sysfs deadlocks waiting for the write to complete, which is waiting for the sysfs teardown to complete. Moved this effort to a work_q element. Took the opportunity to make some other cosmetic changes: - removed tabs in Doc file - replaced with expanded spaces - minor copyright text and author text updates - removed a bunch of trailing whitespace Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-16[SCSI] FC Transport support for vports based on NPIVJames Smart1-0/+450
This patch provides support for FC virtual ports based on NPIV. For information on the interfaces and design, please read the Documentation/scsi/scsi_fc_transport.txt file enclosed within the patch. The RFC was originally posted here: http://marc.info/?l=linux-scsi&m=117226959918393&w=2 Changes from the initial RFC: - Bug fix: needed a transport_class_unregister() for the vport class - Create a symlink to the vport in the shost device if it is not the parent of the vport. - Made symbolic name writable so it can be set after creation - Made the temporary fc_vport_identifiers struct private to the transport. - Deleted the vport_id field from the vport. I couldn't find any good use for it (and symname is a good replacement). - Made the vport_state and vport_last_state "private" attributes. Added the fc_vport_set_state() helper function to manage state transitions - Updated vport_create() to allow a vport to be created in a disabled state. - Added INITIALIZING and FAILED vport states - Added VPCERR_xxx defines for errors to be returned from vport_create() - Created a Documentation/scsi/scsi_fc_transport.txt file that describes the interfaces and expected LLDD behaviors. Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>