Introduced module params to provide dynamic way of configuring
queue depth.

Added support to get max io throttle count through UCSM to
configure maximum outstanding IOs supported by fnic and push
that value to scsi mid-layer.

  Supported IO throttle values:

  UCSM IO THROTTLE VALUE        FNIC MAX OUTSTANDING IOS
  ------------------------------------------------------
        16 (Default)                    2048
        <= 256                          256
        > 256                           <ucsm value>
Signed-off-by: NHiral Patel <hiralpat@cisco.com>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

Use libfcoe as a common FIP implementation with fcoe.
FIP or non-FIP mode is fully automatic if the firmware
supports and enables it.

Even if FIP is not supported, this uses libfcoe for the non-FIP
handling of FLOGI and its response.

Use the new lport_set_port_id() notification to capture
successful FLOGI responses and port_id resets.

While transitioning between Ethernet and FC mode, all rx and
tx FC frames are queued.  In Ethernet mode, all frames are
passed to the exchange manager to capture FLOGI responses.

Change to set data_src_addr to the ctl_src_addr whenever it
would have previously been zero because we're not logged in.
This seems safer so we'll never send a frame with a 0 source MAC.
This also eliminates a special case for sending FLOGI frames.
Signed-off-by: NJoe Eykholt <jeykholt@cisco.com>
Signed-off-by: NRobert Love <robert.w.love@intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

fnic is a driver for the Cisco PCI-Express FCoE HBA
Signed-off-by: NAbhijeet Joglekar <abjoglek@cisco.com>
Signed-off-by: NJoe Eykholt <jeykholt@cisco.com>
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>