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[net-next-2.6,15/21] ixgbe: DCB during ifup use correct CEE or IEEE mode

Message ID 1299932428-3114-16-git-send-email-jeffrey.t.kirsher@intel.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Kirsher, Jeffrey T March 12, 2011, 12:20 p.m. UTC 
From: John Fastabend <john.r.fastabend@intel.com>

DCB settings are cleared in the hardware across link events
during ifup ixgbe reprograms the hardware for DCB if it is
enabled. Now that we have two modes CEE or IEEE we need to
use the correct set of configuration data.

This patch checks the dcbx_cap bits and then enables the
device in the correct mode.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ixgbe/ixgbe_main.c |   30 ++++++++++++++++++++----------
 1 files changed, 20 insertions(+), 10 deletions(-)
diff mbox

Patch

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index be2e145..38f9758 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -3658,15 +3658,6 @@  static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
 	if (hw->mac.type == ixgbe_mac_82598EB)
 		netif_set_gso_max_size(adapter->netdev, 32768);
 
-#ifdef CONFIG_FCOE
-	if (adapter->netdev->features & NETIF_F_FCOE_MTU)
-		max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
-#endif
-
-	ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
-					DCB_TX_CONFIG);
-	ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
-					DCB_RX_CONFIG);
 
 	/* Enable VLAN tag insert/strip */
 	adapter->netdev->features |= NETIF_F_HW_VLAN_RX;
@@ -3674,7 +3665,26 @@  static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
 	hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true);
 
 	/* reconfigure the hardware */
-	ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg);
+	if (adapter->dcbx_cap & (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE)) {
+#ifdef CONFIG_FCOE
+		if (adapter->netdev->features & NETIF_F_FCOE_MTU)
+			max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
+#endif
+		ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
+						DCB_TX_CONFIG);
+		ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
+						DCB_RX_CONFIG);
+		ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg);
+	} else {
+		struct net_device *dev = adapter->netdev;
+
+		if (adapter->ixgbe_ieee_ets)
+			dev->dcbnl_ops->ieee_setets(dev,
+						    adapter->ixgbe_ieee_ets);
+		if (adapter->ixgbe_ieee_pfc)
+			dev->dcbnl_ops->ieee_setpfc(dev,
+						    adapter->ixgbe_ieee_pfc);
+	}
 
 	/* Enable RSS Hash per TC */
 	if (hw->mac.type != ixgbe_mac_82598EB) {