MFC r317740:

MFC r317740:

  Correct loop mode CRN resets to adhere to FCP-4 section 4.10

  Prior to this change, the CRN (Command Reference Number) is reset on any
  firmware LIP, LOOP DOWN, or LOOP RESET event in violation of FCP-4 which
  specifies that the CRN should only be reset in response to a LIP Reset
  (LIPyx) primitive. FCP-4 also indicates PLOGI/LOGO and PRLI/PRLO ELS
  actions as conditions for resetting the CRN for the associated initiator
  port.

  These violations manifest themselves when the HBA is removed from the
  loop, or a target device is removed (especially during an outstanding
  command) without power cycling. If the HBA and and the target device
  determine upon re-establishing the loop that no PLOGI or PRLI is
  required, and the target does not issue a LIPxy to the initiator, the
  CRN for the target will have been improperly reset by the isp driver. As
  a result, the target port will silently ignore all FCP commands issued
  during the device probe (which will time out) preventing the device from
  attaching.

  This change corrects thie CRN reset behavior in response to loop state
  changes, also introduces CRN resets for the above mentioned ELS actions
  as encountered through async PDB change events.

  This change also adds cleanup of outstanding commands in isp_loop_dead()
  that was previously missing.

  sys/dev/isp/isp.c
  	Add the last login state to debug output when syncing the pdb

  sys/dev/isp/isp_freebsd.c
  	Replace binary statement setting aborted ccb status in
  	isp_watchdog() with the XS_SETERR macro used elsewhere

  	In isp_loop_dead(), abort or complete pending commands as done
  	in isp_watchdog()

  	In isp_async(), segregate the ISPASYNC_LOOP_RESET action from
  	ISPASYNC_LIP, ISPASYNC_LOOP_DOWN, and ISPASYNC_LOOP_UP
  	fallthroughs, and only reset the CRN in the RESET case. Also add
  	checks to handle false LOOP RESET actions that do not have a
  	proper associated LIP primitive, and log the primitive in the
  	debug messages

  	In isp_async(), remove the goto from ISP_ASYNC_DEV_STAYED, and
  	only reset the CRN in the DEV_CHANGED action

  	In isp_async(), when processing an ISPASYNC_CHANGE_PDB status,
  	reset CRN(s) for the associated nphdl (or all ports) if the
  	change reason is some form of ELS login/logout. Also remove
  	assignment to fc since it is not used in the scope

  sys/dev/isp/ispmbox.h
  	Add macro definition for the global N-Port handle, and correct a
  	macro typo 'PDB24XX_AE_PRLI_DONJE'

  sys/dev/isp/ispvar.h
  	Add macros FCP_AL_DA_ALL, FCP_AL_PA, and FCP_IS_DEST_ALPD for
  	more legible code when determining if an AL_PD port matches the
  	portid for a given struct fcparam* by value or by virtue of the
  	AL_PD port being 0xFF

Submitted by:	Reid Linnemann
Sponsored by:	Spectra Logic

git-svn-id: svn://svn.freebsd.org/base/stable/10@318149 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f