ixgbe: Add support for the net_device_ops.ndo_fcoe_enable/disable to 82599
This adds support to the net_device_ops.ndo_fcoe_enable/disable for 82599. This
consequently allows us to dynamically turn FCoE offload feature on or off
upon incoming calls to ndo_fcoe_enable/disable. When this happens, FCoE offload
features are enabled/disabled accordingly, and this is regardless of whether
DCB being turned on or not.
Signed-off-by: Yi Zou <yi.zou@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ixgbe/ixgbe_fcoe.c b/drivers/net/ixgbe/ixgbe_fcoe.c
index 28cf104..26fe46f 100644
--- a/drivers/net/ixgbe/ixgbe_fcoe.c
+++ b/drivers/net/ixgbe/ixgbe_fcoe.c
@@ -554,3 +554,97 @@
fcoe->pool = NULL;
}
}
+
+/**
+ * ixgbe_fcoe_enable - turn on FCoE offload feature
+ * @netdev: the corresponding netdev
+ *
+ * Turns on FCoE offload feature in 82599.
+ *
+ * Returns : 0 indicates success or -EINVAL on failure
+ */
+int ixgbe_fcoe_enable(struct net_device *netdev)
+{
+ int rc = -EINVAL;
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+
+ if (!(adapter->flags & IXGBE_FLAG_FCOE_CAPABLE))
+ goto out_enable;
+
+ if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
+ goto out_enable;
+
+ DPRINTK(DRV, INFO, "Enabling FCoE offload features.\n");
+ if (netif_running(netdev))
+ netdev->netdev_ops->ndo_stop(netdev);
+
+ ixgbe_clear_interrupt_scheme(adapter);
+
+ adapter->flags |= IXGBE_FLAG_FCOE_ENABLED;
+ adapter->ring_feature[RING_F_FCOE].indices = IXGBE_FCRETA_SIZE;
+ netdev->features |= NETIF_F_FCOE_CRC;
+ netdev->features |= NETIF_F_FSO;
+ netdev->features |= NETIF_F_FCOE_MTU;
+ netdev->vlan_features |= NETIF_F_FCOE_CRC;
+ netdev->vlan_features |= NETIF_F_FSO;
+ netdev->vlan_features |= NETIF_F_FCOE_MTU;
+ netdev->fcoe_ddp_xid = IXGBE_FCOE_DDP_MAX - 1;
+ netdev_features_change(netdev);
+
+ ixgbe_init_interrupt_scheme(adapter);
+
+ if (netif_running(netdev))
+ netdev->netdev_ops->ndo_open(netdev);
+ rc = 0;
+
+out_enable:
+ return rc;
+}
+
+/**
+ * ixgbe_fcoe_disable - turn off FCoE offload feature
+ * @netdev: the corresponding netdev
+ *
+ * Turns off FCoE offload feature in 82599.
+ *
+ * Returns : 0 indicates success or -EINVAL on failure
+ */
+int ixgbe_fcoe_disable(struct net_device *netdev)
+{
+ int rc = -EINVAL;
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ if (!(adapter->flags & IXGBE_FLAG_FCOE_CAPABLE))
+ goto out_disable;
+
+ if (!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))
+ goto out_disable;
+
+ DPRINTK(DRV, INFO, "Disabling FCoE offload features.\n");
+ if (netif_running(netdev))
+ netdev->netdev_ops->ndo_stop(netdev);
+
+ ixgbe_clear_interrupt_scheme(adapter);
+
+ adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
+ adapter->ring_feature[RING_F_FCOE].indices = 0;
+ netdev->features &= ~NETIF_F_FCOE_CRC;
+ netdev->features &= ~NETIF_F_FSO;
+ netdev->features &= ~NETIF_F_FCOE_MTU;
+ netdev->vlan_features &= ~NETIF_F_FCOE_CRC;
+ netdev->vlan_features &= ~NETIF_F_FSO;
+ netdev->vlan_features &= ~NETIF_F_FCOE_MTU;
+ netdev->fcoe_ddp_xid = 0;
+ netdev_features_change(netdev);
+
+ ixgbe_cleanup_fcoe(adapter);
+
+ ixgbe_init_interrupt_scheme(adapter);
+ if (netif_running(netdev))
+ netdev->netdev_ops->ndo_open(netdev);
+ rc = 0;
+
+out_disable:
+ return rc;
+}