diff options
| author |   John Fastabend <john.r.fastabend@intel.com> | 2011-07-21 22:43:29 +0000 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-29 01:25:51 -0700 |
| commit | 634cdca5637475b74dbc7bd72208f5fdc5904d38 (patch) | |
| tree | bf76f800af306a4ce7878001c02d5971412178b2 /drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_82599.c | |
| parent | ixgbe: consolidate, setup for multiple traffic classes (diff) | |
| download | linux-dev-634cdca5637475b74dbc7bd72208f5fdc5904d38.tar.xz linux-dev-634cdca5637475b74dbc7bd72208f5fdc5904d38.zip | |
ixgbe: PFC not cleared on X540 devices
X540 devices do not clear PFC before sets. This results in
the device possibly responding to PFC frames that the user
has disabled. Although it would also be wrong for the peer
to be transmitting these frames. Now we clear the register
before set.
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/ethernet/intel/ixgbe/ixgbe_dcb_82599.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_82599.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_82599.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_82599.c index ade98200288c..d64fb872978e 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_82599.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_82599.c @@ -252,8 +252,10 @@ s32 ixgbe_dcb_config_pfc_82599(struct ixgbe_hw *hw, u8 pfc_en) reg &= ~IXGBE_MFLCN_RFCE; reg |= IXGBE_MFLCN_RPFCE | IXGBE_MFLCN_DPF; - if (hw->mac.type == ixgbe_mac_X540) + if (hw->mac.type == ixgbe_mac_X540) { + reg &= ~IXGBE_MFLCN_RPFCE_MASK; reg |= pfc_en << IXGBE_MFLCN_RPFCE_SHIFT; + } IXGBE_WRITE_REG(hw, IXGBE_MFLCN, reg); |