diff options
| author | Neerav Parikh <neerav.parikh@intel.com> | 2015-12-08 22:13:58 -0800 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2016-01-08 04:15:00 -0800 |
| commit | 8b75451be1fc05b6ee3f9d0eaea0006d60caff89 (patch) | |
| tree | a47690ba12b6f60b6600b7ad7dda8a15e6473787 /drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | |
| parent | b262a9a772eae649159fd2480992713a2dd2b3d3 (diff) | |
| download | op-kernel-dev-8b75451be1fc05b6ee3f9d0eaea0006d60caff89.zip op-kernel-dev-8b75451be1fc05b6ee3f9d0eaea0006d60caff89.tar.gz | |
ixgbe: Fix MDD events generated when FCoE+SRIOV are enabled
When FCoE is enabled with SR-IOV on the X550 NIC the hardware
generates MDD events.
This patch fixes these by setting the expected values in the
Tx context descriptors for FCoE/FIP frames and adding a flush
after writing the RDLEN register.
Signed-off-by: Neerav Parikh <neerav.parikh@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 | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index a12f93d..328d7a8 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -3619,6 +3619,9 @@ void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter, IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32)); IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx), ring->count * sizeof(union ixgbe_adv_rx_desc)); + /* Force flushing of IXGBE_RDLEN to prevent MDD */ + IXGBE_WRITE_FLUSH(hw); + IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0); IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0); ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx); |
