July 7, 2009

This directory contains the SCST-enhanced lpfc driver for SCSI Target
Mode operation on Emulex FC Adapters.

The solution is implemented via the following components:

1) The standard Linux lpfc driver was modified :
  - To support configuration of adapters in initiator or target mode
    operation via the "lpfc_fcp_mode" module parameter.  By default,
    all adapters are attached to in Target mode.
  - The discovery engine is updated to support ELS handling as a FCP
    Target device.
  - The base driver implements an Emulex-specific api providing a FCP
    target interface into the base driver.  The api is low-level, working
    at the adapter command interface.  The api allows for interaction
    with the discovery engine to validate logins and track
    initiator discovery. See lpfc/lpfc_target_api.h for further details.

2) A helper module, lpfc_scst, was created. The module binds on its
   bottom side with the base lpfc driver via the Emulex TM api, and on
   its top side with the SCST subsystem. The module performs the
   translation from the SCST semantics/commands to the Emulex
   adapter-specific commands.

If there are any questions on this image, please contact elx_support@emulex.com 

Thank You and Enjoy !
  
   The Emulex SCST Team