[SCSI] libfcoe: Allow FIP to be disabled by the driver

Allow FIP to be disabled by the driver for devices
that want to use libfcoe in non-FIP mode.

The driver merely sets the fcoe_ctlr mode to the state which
should be entered when the link comes up.  The default is auto.
No change is needed for fcoe.c which uses auto mode.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

2 files changed, 6 insertions, 2 deletions

diff --git a/drivers/scsi/fcoe/libfcoe.c b/drivers/scsi/fcoe/libfcoe.c
index 6b07a8400889..1ea17a3c8749 100644
--- a/drivers/scsi/fcoe/libfcoe.c
+++ b/drivers/scsi/fcoe/libfcoe.c
@@ -109,6 +109,7 @@ static inline int fcoe_ctlr_fcf_usable(struct fcoe_fcf *fcf)
 void fcoe_ctlr_init(struct fcoe_ctlr *fip)
 {
         fip->state = FIP_ST_LINK_WAIT;
+        fip->mode = FIP_ST_AUTO;
         INIT_LIST_HEAD(&fip->fcfs);
         spin_lock_init(&fip->lock);
         fip->flogi_oxid = FC_XID_UNKNOWN;
@@ -261,11 +262,12 @@ void fcoe_ctlr_link_up(struct fcoe_ctlr *fip)
                 spin_unlock_bh(&fip->lock);
                 fc_linkup(fip->lp);
         } else if (fip->state == FIP_ST_LINK_WAIT) {
-                fip->state = FIP_ST_AUTO;
+                fip->state = fip->mode;
                 fip->last_link = 1;
                 fip->link = 1;
                 spin_unlock_bh(&fip->lock);
-                LIBFCOE_FIP_DBG("%s", "setting AUTO mode.\n");
+                if (fip->state == FIP_ST_AUTO)
+                        LIBFCOE_FIP_DBG("%s", "setting AUTO mode.\n");
                 fc_linkup(fip->lp);
                 fcoe_ctlr_solicit(fip, NULL);
         } else
diff --git a/include/scsi/libfcoe.h b/include/scsi/libfcoe.h
index 76d08c9a7678..2344a00e92ef 100644
--- a/include/scsi/libfcoe.h
+++ b/include/scsi/libfcoe.h
@@ -55,6 +55,7 @@ enum fip_state {
 /**
  * struct fcoe_ctlr - FCoE Controller and FIP state
  * @state:         internal FIP state for network link and FIP or non-FIP mode.
+ * @mode:          LLD-selected mode.
  * @lp:            &fc_lport: libfc local port.
  * @sel_fcf:       currently selected FCF, or NULL.
  * @fcfs:          list of discovered FCFs.
@@ -89,6 +90,7 @@ enum fip_state {
  */
 struct fcoe_ctlr {
         enum fip_state state;
+        enum fip_state mode;
         struct fc_lport *lp;
         struct fcoe_fcf *sel_fcf;
         struct list_head fcfs;