ixgbe: Distribute transmission of FCoE traffic in 82599
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>
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1 changed files with 8 additions and 2 deletions
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@ -5168,9 +5168,15 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
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tx_ring = &adapter->tx_ring[r_idx];
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if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
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(skb->protocol == htons(ETH_P_FCOE)))
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(skb->protocol == htons(ETH_P_FCOE))) {
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tx_flags |= IXGBE_TX_FLAGS_FCOE;
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#ifdef IXGBE_FCOE
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r_idx = smp_processor_id();
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r_idx &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
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r_idx += adapter->ring_feature[RING_F_FCOE].mask;
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tx_ring = &adapter->tx_ring[r_idx];
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#endif
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}
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/* four things can cause us to need a context descriptor */
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if (skb_is_gso(skb) ||
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(skb->ip_summed == CHECKSUM_PARTIAL) ||
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