diff options
| author |   Vasu Dev <vasu.dev@intel.com> | 2015-11-23 10:30:51 -0800 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2016-01-08 03:25:14 -0800 |
| commit | 3efcb86e2da69989827066c231edb30ec10de932 (patch) | |
| tree | d70c045f4075d56b05726842cae60e2b1dee920d /drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c | |
| parent | Merge branch 'macb-usrio-cap' (diff) | |
| download | linux-dev-3efcb86e2da69989827066c231edb30ec10de932.tar.xz linux-dev-3efcb86e2da69989827066c231edb30ec10de932.zip | |
ixgbe: Fill at least min credits to a TC credit refills
Currently credit_refill and credit_max could be zero for a TC and that
is causing Tx hang for CEE mode configuration, so to fix that have at
min credit assigned to a TC and that is as what IEEE mode already does.
Change-ID: If652c133093a21e530f4e9eab09097976f57fb12
Signed-off-by: Vasu Dev <vasu.dev@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_dcb.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c index a507a6fe3624..02c7333a9c83 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb.c @@ -139,6 +139,11 @@ s32 ixgbe_dcb_calculate_tc_credits(struct ixgbe_hw *hw, /* Calculate credit refill ratio using multiplier */ credit_refill = min(link_percentage * min_multiplier, MAX_CREDIT_REFILL); + + /* Refill at least minimum credit */ + if (credit_refill < min_credit) + credit_refill = min_credit; + p->data_credits_refill = (u16)credit_refill; /* Calculate maximum credit for the TC */ @@ -149,7 +154,7 @@ s32 ixgbe_dcb_calculate_tc_credits(struct ixgbe_hw *hw, * of a TC is too small, the maximum credit may not be * enough to send out a jumbo frame in data plane arbitration. */ - if (credit_max && (credit_max < min_credit)) + if (credit_max < min_credit) credit_max = min_credit; if (direction == DCB_TX_CONFIG) { |