[SCSI] fcoe: add check to fail gracefully in bonding mode

This patch adds a check to fail gracefully when the netdevice
is bonded.  Previously, the error was detected but the stack
would continue to load.  This resulted in a partially enabled
fcoe intance and errors when the fcoe instance was destroy.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 17ce2ef..b15ec99 100644 (file)
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -266,6 +266,7 @@ static int fcoe_interface_setup(struct fcoe_interface *fcoe,
        if ((netdev->priv_flags & IFF_MASTER_ALB) ||
            (netdev->priv_flags & IFF_SLAVE_INACTIVE) ||
            (netdev->priv_flags & IFF_MASTER_8023AD)) {
+               FCOE_NETDEV_DBG(netdev, "Bonded interfaces not supported\n");
                return -EOPNOTSUPP;
        }
 
@@ -323,6 +324,7 @@ static int fcoe_interface_setup(struct fcoe_interface *fcoe,
 static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev)
 {
        struct fcoe_interface *fcoe;
+       int err;
 
        fcoe = kzalloc(sizeof(*fcoe), GFP_KERNEL);
        if (!fcoe) {
@@ -341,7 +343,13 @@ static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev)
        fcoe->ctlr.update_mac = fcoe_update_src_mac;
        fcoe->ctlr.get_src_addr = fcoe_get_src_mac;
 
-       fcoe_interface_setup(fcoe, netdev);
+       err = fcoe_interface_setup(fcoe, netdev);
+       if (err) {
+               fcoe_ctlr_destroy(&fcoe->ctlr);
+               kfree(fcoe);
+               dev_put(netdev);
+               return NULL;
+       }
 
        return fcoe;
 }