• Kiran Patil's avatar
    [SCSI] tcm_fc: Adding FC_FC4 provider (tcm_fc) for FCoE target (TCM - target core) support · 3699d92a
    Kiran Patil authored
    This is a comprehensive patch for FC-FC4 provider. tcm_fc is a FC-FC4
    provider which glues target core (TCM) with Fiber channel library
    (libfc). tcm_fc uses existing FC4 provider hooks from Fiber channel
    library. This Fiber channel library is used by FCoE (transport - FC
    over Ethernet) protocol driver as well.
    
    Combination of modules such as Fiber channel library, tcm_fc, TCM
    target core, and FCoE protocol driver enables functional FCoE target.
    
    This patch includes initial commit for tcm_fc plus additional
    enhancement, bug fixes.
    
    This tcm_fc module essentially contains 3 entry points such as "prli",
    "prlo", "recv".  When process login request (ELS_PRLI) request is
    received, Fiber channel library (libfc) module calls passive providers
    (FC-FC4, tcm_fc) (if any registered) "prli" function. Likewise when
    LOGO request is received, "prlo" function of passive provider is
    invoked by libfc.  For all other request (e.g. any read/write, task
    management, LUN inquiry commands), "recv" function of passiver
    provider is invoked by libfc. Those passive providers "prli, prlo,
    recv" functions interact with TCM target core for requested operation.
    
    This module was primarily developed by "Joe Eykholt" and there were
    significant contributions from the people listed under signed-off.
    Signed-off-by: default avatarJoe Eykholt <jeykholt@cisco.com>
    Signed-off-by: default avatarNicholas A. Bellinger <nab@linux-iscsi.org>
    Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
    Signed-off-by: default avatarYi Zou <yi.zou@intel.com>
    Signed-off-by: default avatarKiran Patil <kiran.patil@intel.com>
    Acked-by: default avatarRobert Love <robert.w.love@intel.com>
    Signed-off-by: default avatarJames Bottomley <jbottomley@parallels.com>
    Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
    3699d92a
tfc_sess.c 12.4 KB