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ixgbe: priority tagging FCoE frames without FCoE offload 

The DCB user priority for FCoE is available regardless of whether
FCoE offload is enabled (IXGBE_FLAG_FCOE_ENABLED bit is set).
This allows proper DCB user priority tagging for FCoE
traffic on both 82598 and 82599 devices.

Signed-off-by: Yi Zou <yi.zou@intel.com>
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>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
John Fastabend 2010-07-26 20:41:31 +00:00 committed by David S. Miller
parent feb8f47809
commit 56075a98df
1 changed files with 24 additions and 21 deletions
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45
drivers/net/ixgbe/ixgbe_main.c
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@ -4783,6 +4783,7 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
#ifdef CONFIG_IXGBE_DCB
/* Default traffic class to use for FCoE */
adapter->fcoe.tc = IXGBE_FCOE_DEFTC;
adapter->fcoe.up = IXGBE_FCOE_DEFTC;
#endif
#endif /* IXGBE_FCOE */
}
@ -6147,21 +6148,26 @@ 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();
#ifdef IXGBE_FCOE
if ((skb->protocol == htons(ETH_P_FCOE)) ||
(skb->protocol == htons(ETH_P_FIP))) {
if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
txq &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
txq += adapter->ring_feature[RING_F_FCOE].mask;
return txq;
} else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
txq = adapter->fcoe.up;
return txq;
}
}
#endif
if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
while (unlikely(txq >= dev->real_num_tx_queues))
txq -= dev->real_num_tx_queues;
return txq;
}
#ifdef IXGBE_FCOE
if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
((skb->protocol == htons(ETH_P_FCOE)) ||
(skb->protocol == htons(ETH_P_FIP)))) {
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) {
if (skb->priority == TC_PRIO_CONTROL)
txq = adapter->ring_feature[RING_F_DCB].indices-1;
@ -6205,18 +6211,15 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
tx_ring = adapter->tx_ring[skb->queue_mapping];
#ifdef IXGBE_FCOE
if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
#ifdef CONFIG_IXGBE_DCB
/* for FCoE with DCB, we force the priority to what
* was specified by the switch */
if ((skb->protocol == htons(ETH_P_FCOE)) ||
(skb->protocol == htons(ETH_P_FIP))) {
tx_flags &= ~(IXGBE_TX_FLAGS_VLAN_PRIO_MASK
<< IXGBE_TX_FLAGS_VLAN_SHIFT);
tx_flags |= ((adapter->fcoe.up << 13)
<< IXGBE_TX_FLAGS_VLAN_SHIFT);
}
#endif
/* for FCoE with DCB, we force the priority to what
* was specified by the switch */
if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED &&
(skb->protocol == htons(ETH_P_FCOE) ||
skb->protocol == htons(ETH_P_FIP))) {
tx_flags &= ~(IXGBE_TX_FLAGS_VLAN_PRIO_MASK
<< IXGBE_TX_FLAGS_VLAN_SHIFT);
tx_flags |= ((adapter->fcoe.up << 13)
<< IXGBE_TX_FLAGS_VLAN_SHIFT);
/* flag for FCoE offloads */
if (skb->protocol == htons(ETH_P_FCOE))
tx_flags |= IXGBE_TX_FLAGS_FCOE;