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ixgbe: use known user priority for FCoE when DCB is enabled 

Store the user priority for FCoE and use it directly for outgoing
FCoE traffic when DCB is enabled.

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>
This commit is contained in:
Yi Zou 2009-12-03 11:32:22 +00:00 committed by David S. Miller
parent 69ee472f27
commit 61a0f421ce
3 changed files with 28 additions and 13 deletions
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30
drivers/net/ixgbe/ixgbe_fcoe.c
View File

@ -499,6 +499,10 @@ void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter)
struct ixgbe_hw *hw = &adapter->hw;
struct ixgbe_fcoe *fcoe = &adapter->fcoe;
struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
#ifdef CONFIG_IXGBE_DCB
u8 tc;
u32 up2tc;
#endif
/* create the pool for ddp if not created yet */
if (!fcoe->pool) {
@ -540,6 +544,17 @@ void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter)
IXGBE_FCRXCTRL_FCOELLI |
IXGBE_FCRXCTRL_FCCRCBO |
(FC_FCOE_VER << IXGBE_FCRXCTRL_FCOEVER_SHIFT));
#ifdef CONFIG_IXGBE_DCB
up2tc = IXGBE_READ_REG(&adapter->hw, IXGBE_RTTUP2TC);
for (i = 0; i < MAX_USER_PRIORITY; i++) {
tc = (u8)(up2tc >> (i * IXGBE_RTTUP2TC_UP_SHIFT));
tc &= (MAX_TRAFFIC_CLASS - 1);
if (fcoe->tc == tc) {
fcoe->up = i;
break;
}
}
#endif
}
/**
@ -671,19 +686,7 @@ out_disable:
*/
u8 ixgbe_fcoe_getapp(struct ixgbe_adapter *adapter)
{
int i;
u8 tc;
u32 up2tc;
up2tc = IXGBE_READ_REG(&adapter->hw, IXGBE_RTTUP2TC);
for (i = 0; i < MAX_USER_PRIORITY; i++) {
tc = (u8)(up2tc >> (i * IXGBE_RTTUP2TC_UP_SHIFT));
tc &= (MAX_TRAFFIC_CLASS - 1);
if (adapter->fcoe.tc == tc)
return 1 << i;
}
return 0;
return 1 << adapter->fcoe.up;
}
/**
@ -710,6 +713,7 @@ u8 ixgbe_fcoe_setapp(struct ixgbe_adapter *adapter, u8 up)
up2tc >>= (i * IXGBE_RTTUP2TC_UP_SHIFT);
up2tc &= (MAX_TRAFFIC_CLASS - 1);
adapter->fcoe.tc = (u8)up2tc;
adapter->fcoe.up = i;
return 0;
}
}

3
drivers/net/ixgbe/ixgbe_fcoe.h
View File

@ -62,7 +62,10 @@ struct ixgbe_fcoe_ddp {
};
struct ixgbe_fcoe {
#ifdef CONFIG_IXGBE_DCB
u8 tc;
u8 up;
#endif
spinlock_t lock;
struct pci_pool *pool;
struct ixgbe_fcoe_ddp ddp[IXGBE_FCOE_DDP_MAX];

8
drivers/net/ixgbe/ixgbe_main.c
View File

@ -3958,8 +3958,10 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
adapter->ring_feature[RING_F_FCOE].indices = 0;
#ifdef CONFIG_IXGBE_DCB
/* Default traffic class to use for FCoE */
adapter->fcoe.tc = IXGBE_FCOE_DEFTC;
#endif
#endif /* IXGBE_FCOE */
}
@ -5332,6 +5334,12 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
(skb->protocol == htons(ETH_P_FCOE))) {
tx_flags |= IXGBE_TX_FLAGS_FCOE;
#ifdef IXGBE_FCOE
#ifdef CONFIG_IXGBE_DCB
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
r_idx = smp_processor_id();
r_idx &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
r_idx += adapter->ring_feature[RING_F_FCOE].mask;