diff options
| author | Jacob Keller <jacob.e.keller@intel.com> | 2014-04-05 02:35:52 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2014-04-22 23:07:11 -0700 |
| commit | e5776620a7b7b2aacbc60ff1cdbeca6814ec8411 (patch) | |
| tree | a77c54df3d1f9e45b803f100a297f9cb866e1145 /drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | |
| parent | fd0d192be6e814495aec91f357b5801afc3b6262 (diff) | |
ixgbe: convert low_water into an array
Since fc.high_water is an array, we should treat low_water as an array
also. This allows the algorithm to output different values for different
TCs, and then we can distinguish between them. In addition, this patch
changes one path that didn't honor the return value from ixgbe_setup_fc.
Reported-by: Aaron Salter <aaron.k.salter@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index c4c526b7f99f..147efec3e002 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -4100,8 +4100,8 @@ static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb) (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) && (pb == ixgbe_fcoe_get_tc(adapter))) tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; - #endif + /* Calculate delay value for device */ switch (hw->mac.type) { case ixgbe_mac_X540: @@ -4142,7 +4142,7 @@ static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb) * @adapter: board private structure to calculate for * @pb: packet buffer to calculate */ -static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter) +static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter, int pb) { struct ixgbe_hw *hw = &adapter->hw; struct net_device *dev = adapter->netdev; @@ -4152,6 +4152,14 @@ static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter) /* Calculate max LAN frame size */ tc = dev->mtu + ETH_HLEN + ETH_FCS_LEN; +#ifdef IXGBE_FCOE + /* FCoE traffic class uses FCOE jumbo frames */ + if ((dev->features & NETIF_F_FCOE_MTU) && + (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) && + (pb == netdev_get_prio_tc_map(dev, adapter->fcoe.up))) + tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; +#endif + /* Calculate delay value for device */ switch (hw->mac.type) { case ixgbe_mac_X540: @@ -4178,15 +4186,17 @@ static void ixgbe_pbthresh_setup(struct ixgbe_adapter *adapter) if (!num_tc) num_tc = 1; - hw->fc.low_water = ixgbe_lpbthresh(adapter); - for (i = 0; i < num_tc; i++) { hw->fc.high_water[i] = ixgbe_hpbthresh(adapter, i); + hw->fc.low_water[i] = ixgbe_lpbthresh(adapter, i); /* Low water marks must not be larger than high water marks */ - if (hw->fc.low_water > hw->fc.high_water[i]) - hw->fc.low_water = 0; + if (hw->fc.low_water[i] > hw->fc.high_water[i]) + hw->fc.low_water[i] = 0; } + + for (; i < MAX_TRAFFIC_CLASS; i++) + hw->fc.high_water[i] = 0; } static void ixgbe_configure_pb(struct ixgbe_adapter *adapter) |