ixgbe: select FCoE Tx queue in ndo_select_queue

This removes the Tx queue selection for FCoE traffic from ixgbe_xmit_frame()
and does it in the ndo_select_queue() call, moving all Tx queue selection
into a single routine.

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_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 09990ed..e3dc68b 100644 (file)
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -5286,10 +5286,19 @@ static int ixgbe_maybe_stop_tx(struct net_device *netdev,
 static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb)
 {
        struct ixgbe_adapter *adapter = netdev_priv(dev);
+       int txq = smp_processor_id();
 
        if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)
-               return smp_processor_id();
+               return txq;
 
+#ifdef IXGBE_FCOE
+       if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
+           (skb->protocol == htons(ETH_P_FCOE))) {
+               txq &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
+               txq += adapter->ring_feature[RING_F_FCOE].mask;
+               return txq;
+       }
+#endif
        if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
                return (skb->vlan_tci & IXGBE_TX_FLAGS_VLAN_PRIO_MASK) >> 13;
 
@@ -5304,7 +5313,7 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
        unsigned int first;
        unsigned int tx_flags = 0;
        u8 hdr_len = 0;
-       int r_idx = 0, tso;
+       int tso;
        int count = 0;
        unsigned int f;
 
@@ -5312,13 +5321,13 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
                tx_flags |= vlan_tx_tag_get(skb);
                if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
                        tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
-                       tx_flags |= (skb->queue_mapping << 13);
+                       tx_flags |= ((skb->queue_mapping & 0x7) << 13);
                }
                tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
                tx_flags |= IXGBE_TX_FLAGS_VLAN;
        } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
                if (skb->priority != TC_PRIO_CONTROL) {
-                       tx_flags |= (skb->queue_mapping << 13);
+                       tx_flags |= ((skb->queue_mapping & 0x7) << 13);
                        tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
                        tx_flags |= IXGBE_TX_FLAGS_VLAN;
                } else {
@@ -5327,8 +5336,7 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
                }
        }
 
-       r_idx = skb->queue_mapping;
-       tx_ring = &adapter->tx_ring[r_idx];
+       tx_ring = &adapter->tx_ring[skb->queue_mapping];
 
        if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
            (skb->protocol == htons(ETH_P_FCOE))) {
@@ -5340,10 +5348,6 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
                tx_flags |= ((adapter->fcoe.up << 13)
                              << IXGBE_TX_FLAGS_VLAN_SHIFT);
 #endif
-               r_idx = smp_processor_id();
-               r_idx &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
-               r_idx += adapter->ring_feature[RING_F_FCOE].mask;
-               tx_ring = &adapter->tx_ring[r_idx];
 #endif
        }
        /* four things can cause us to need a context descriptor */