• James Smart's avatar
    [SCSI] fc_transport: make all rports wait dev_loss_tmo before removing them · 92740b24
    James Smart authored
    Per the comment in the change - it's not always prudent to immediately
    remove the rport upon first notice of a disconnect. Make all rports
    wait dev_loss_tmo before being deleted (and each could have a separate
    dev_loss_tmo value).
    The original post was:
    The repost contains the following changes:
     - Bug fix in fc_starget_delete(). Dev_loss_tmo_callbk() was called prior to
       tearing down the target. The callback is to be the last thing called, as
       it tells the LLDD that the rport is completely finished and can be torn
       down.  Rework so that terminate_rport_io() is called to terminate the
       outstanding io. Isolated work so it's is simply "starget" work.
     - Fix holes in original patch. There were code paths that did not expect
       the dev_loss_tmo timer to be running for the non-fcp rports.
     - Bug Fix: the transport wasn't protecting against a LLDD calling
       fc_remote_port_delete() back-to-back. Thus, the dev_loss_tmo timer
       could be restarted such that it fires after the rport had been deleted.
       Validate rport state before starting the timer.
    Signed-off-by: default avatarJames Smart <James.Smart@emulex.com>
    Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
scsi_transport_fc.c 73.9 KB