diff options
| author | Alexander Duyck <aduyck@mirantis.com> | 2016-01-06 23:10:23 -0800 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2016-02-15 16:21:05 -0800 |
| commit | c3278587e7d34cfbc1d38d3ae25923343af7752a (patch) | |
| tree | 16e68019ed5a5591e63f4eafa923c32bff4a5b0b /drivers/net | |
| parent | 9ce0e8d72678b5b60c99ce4c7af15ec127c761cb (diff) | |
igb: clean up code for setting MAC address
Drop a bunch of hand written byte swapping code in favor of just doing the
byte swapping ourselves. The registers are little endian registers storing
a big endian value so if we read the MAC address array as little endian
then we will get the CPU registers into the proper layout.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 85c47aa16a31..02f19e45d6fd 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -7698,15 +7698,14 @@ static void igb_io_resume(struct pci_dev *pdev) static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index, u8 qsel) { - u32 rar_low, rar_high; struct e1000_hw *hw = &adapter->hw; + u32 rar_low, rar_high; /* HW expects these in little endian so we reverse the byte order - * from network order (big endian) to little endian + * from network order (big endian) to CPU endian */ - rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) | - ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); - rar_high = ((u32) addr[4] | ((u32) addr[5] << 8)); + rar_low = le32_to_cpup((__be32 *)(addr)); + rar_high = le16_to_cpup((__be16 *)(addr + 4)); /* Indicate to hardware the Address is Valid. */ rar_high |= E1000_RAH_AV; |