[SCSI] fcoe: Call ndo_fcoe_enable/disable to turn FCoE feature on/off in LLD

Calls ndo_fcoe_enabled() of the associated netdev upon creating the FCoE
instance to make sure LLD has all necessary resources allocated and setup
properly before passing FCoE traffic. Similarly, calls ndo_fcoe_disable()
upon destroying the FCoE instance on the associated netdev to allow the LLD
to release all allocated resources for FCoE.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index c66b9fa7d674..aef29afb6e71 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -161,9 +161,18 @@ static int fcoe_interface_setup(struct fcoe_interface *fcoe,
         struct fcoe_ctlr *fip = &fcoe->ctlr;
         struct netdev_hw_addr *ha;
         u8 flogi_maddr[ETH_ALEN];
+        const struct net_device_ops *ops;
 
         fcoe->netdev = netdev;
 
+        /* Let LLD initialize for FCoE */
+        ops = netdev->netdev_ops;
+        if (ops->ndo_fcoe_enable) {
+                if (ops->ndo_fcoe_enable(netdev))
+                        FCOE_NETDEV_DBG(netdev, "Failed to enable FCoE"
+                                        " specific feature for LLD.\n");
+        }
+
         /* Do not support for bonding device */
         if ((netdev->priv_flags & IFF_MASTER_ALB) ||
             (netdev->priv_flags & IFF_SLAVE_INACTIVE) ||
@@ -262,6 +271,7 @@ void fcoe_interface_cleanup(struct fcoe_interface *fcoe)
         struct net_device *netdev = fcoe->netdev;
         struct fcoe_ctlr *fip = &fcoe->ctlr;
         u8 flogi_maddr[ETH_ALEN];
+        const struct net_device_ops *ops;
 
         /*
          * Don't listen for Ethernet packets anymore.
@@ -281,6 +291,14 @@ void fcoe_interface_cleanup(struct fcoe_interface *fcoe)
         if (fip->spma)
                 dev_unicast_delete(netdev, fip->ctl_src_addr);
         dev_mc_delete(netdev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0);
+
+        /* Tell the LLD we are done w/ FCoE */
+        ops = netdev->netdev_ops;
+        if (ops->ndo_fcoe_disable) {
+                if (ops->ndo_fcoe_disable(netdev))
+                        FCOE_NETDEV_DBG(netdev, "Failed to disable FCoE"
+                                        " specific feature for LLD.\n");
+        }
 }
 
 /**