diff options
| author |   John Fastabend <john.r.fastabend@intel.com> | 2012-04-23 22:27:28 +0000 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2012-05-05 05:18:59 -0700 |
| commit | e1abc1bb85549ed5a01a7f49a488002dbe52486c (patch) | |
| tree | 10bb9c0ee07569fab349bd0d0ec238367f0a3d45 /drivers/net | |
| parent | e1000e: increase version number (diff) | |
| download | linux-dev-e1abc1bb85549ed5a01a7f49a488002dbe52486c.tar.xz linux-dev-e1abc1bb85549ed5a01a7f49a488002dbe52486c.zip | |
ixgbe: dcb: IEEE PFC stats and reset logic incorrect
PFC stats are only tabulated when PFC is enabled. However in IEEE
mode the ieee_pfc pfc_tc bits were not checked and the calculation
was aborted.
This results in statistics not being reported through ethtool and
possible a false Tx hang occurring when receiving pause frames.
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c | 7 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 6 |
2 files changed, 12 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c index 652e4b09546d..2feacf698d9b 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c @@ -662,6 +662,13 @@ static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev, return -ENOMEM; } + if (pfc->pfc_en) { + adapter->last_lfc_mode = adapter->hw.fc.current_mode; + adapter->hw.fc.current_mode = ixgbe_fc_pfc; + } else { + adapter->hw.fc.current_mode = adapter->last_lfc_mode; + } + prio_tc = adapter->ixgbe_ieee_ets->prio_tc; memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc)); return ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en, prio_tc); diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index b2daff3b3328..4048c9d35caa 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -637,7 +637,11 @@ static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter) clear_bit(__IXGBE_HANG_CHECK_ARMED, &adapter->tx_ring[i]->state); return; - } else if (!(adapter->dcb_cfg.pfc_mode_enable)) + } else if (((adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) && + !(adapter->dcb_cfg.pfc_mode_enable)) || + ((adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) && + adapter->ixgbe_ieee_pfc && + !(adapter->ixgbe_ieee_pfc->pfc_en))) return; /* update stats for each tc, only valid with PFC enabled */ |