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ixgbe: Add function for obtaining FCoE TC based on FCoE user priority

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In upcoming patches it will become increasingly common to need to determine
the FCoE traffic class in order to determine the correct queues for FCoE.
In order to make this easier I am adding a function for obtaining the FCoE
traffic class based on the user priority.

Cc: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck
2012-06-02 00:11:02 +00:00
committed by Jeff Kirsher
parent 02debdc9b9
commit 800bd607c3
4 changed files with 22 additions and 15 deletions
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14
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
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@@ -3646,18 +3646,12 @@ static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb)
#ifdef IXGBE_FCOE
/* FCoE traffic class uses FCOE jumbo frames */
if (dev->features & NETIF_F_FCOE_MTU) {
int fcoe_pb = 0;
#ifdef CONFIG_IXGBE_DCB
fcoe_pb = netdev_get_prio_tc_map(dev, adapter->fcoe.up);
if ((dev->features & NETIF_F_FCOE_MTU) &&
(tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) &&
(pb == ixgbe_fcoe_get_tc(adapter)))
tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
#endif
if (fcoe_pb == pb && tc < IXGBE_FCOE_JUMBO_FRAME_SIZE)
tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
}
#endif
/* Calculate delay value for device */
switch (hw->mac.type) {
case ixgbe_mac_X540: