| Message ID | 20100227002135.32576.23757.stgit@localhost.localdomain |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
From: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Date: Fri, 26 Feb 2010 16:21:36 -0800 > From: John Fastabend <john.r.fastabend@intel.com> > > Move TC_PRIO_CONTROL check and queue remapping into > ixgbe_select_queue(). Remapping queues after the qdisc > can result in the wrong qdisc queue being stopped with > netif_stop_subqueue(). Even if this is resolved and the > correct queue is stopped it can result in a queue being > blocked by TC_PRIO_CONTROL frames uneccesarily. Moving > this into the select_queue routine maintains alignment > between tx_rings and qdisc queues. > > Signed-off-by: John Fastabend <john.r.fastabend@intel.com> > Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index a961da2..45e3532 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -5639,8 +5639,14 @@ static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb) return txq; } #endif - if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) - return (skb->vlan_tci & IXGBE_TX_FLAGS_VLAN_PRIO_MASK) >> 13; + if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { + if (skb->priority == TC_PRIO_CONTROL) + txq = adapter->ring_feature[RING_F_DCB].indices-1; + else + txq = (skb->vlan_tci & IXGBE_TX_FLAGS_VLAN_PRIO_MASK) + >> 13; + return txq; + } return skb_tx_hash(dev, skb); } @@ -5667,14 +5673,9 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, 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 & 0x7) << 13); - tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; - tx_flags |= IXGBE_TX_FLAGS_VLAN; - } else { - skb->queue_mapping = - adapter->ring_feature[RING_F_DCB].indices-1; - } + tx_flags |= ((skb->queue_mapping & 0x7) << 13); + tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT; + tx_flags |= IXGBE_TX_FLAGS_VLAN; } tx_ring = adapter->tx_ring[skb->queue_mapping];