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ixgbe: Distribute transmission of FCoE traffic in 82599

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This adds a simple selection of a FCoE tx queue based on the current cpu id to
distribute transmission of FCoE traffic evenly among multiple FCoE transmit
queues.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yi Zou 2009-09-03 14:56:10 +00:00 committed by David S. Miller
parent 8de8b2e634
commit 09ad1cc099
1 changed files with 8 additions and 2 deletions
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10
drivers/net/ixgbe/ixgbe_main.c
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@ -5168,9 +5168,15 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
tx_ring = &adapter->tx_ring[r_idx]; tx_ring = &adapter->tx_ring[r_idx];
if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) && if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
(skb->protocol == htons(ETH_P_FCOE))) (skb->protocol == htons(ETH_P_FCOE))) {
tx_flags |= IXGBE_TX_FLAGS_FCOE; tx_flags |= IXGBE_TX_FLAGS_FCOE;
#ifdef IXGBE_FCOE
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 */ /* four things can cause us to need a context descriptor */
if (skb_is_gso(skb) || if (skb_is_gso(skb) ||
(skb->ip_summed == CHECKSUM_PARTIAL) || (skb->ip_summed == CHECKSUM_PARTIAL) ||