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>
diff --git a/drivers/net/ixgbe/ixgbe_fcoe.c b/drivers/net/ixgbe/ixgbe_fcoe.c
index edecdc8..da32a10 100644
--- a/drivers/net/ixgbe/ixgbe_fcoe.c
+++ b/drivers/net/ixgbe/ixgbe_fcoe.c
@@ -499,6 +499,10 @@
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 @@
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 @@
*/
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 @@
up2tc >>= (i * IXGBE_RTTUP2TC_UP_SHIFT);
up2tc &= (MAX_TRAFFIC_CLASS - 1);
adapter->fcoe.tc = (u8)up2tc;
+ adapter->fcoe.up = i;
return 0;
}
}