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>
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@ -7698,15 +7698,14 @@ static void igb_io_resume(struct pci_dev *pdev)
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static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index,
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u8 qsel)
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{
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u32 rar_low, rar_high;
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struct e1000_hw *hw = &adapter->hw;
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u32 rar_low, rar_high;
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/* HW expects these in little endian so we reverse the byte order
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* from network order (big endian) to little endian
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* from network order (big endian) to CPU endian
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*/
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rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) |
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((u32) addr[2] << 16) | ((u32) addr[3] << 24));
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rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
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rar_low = le32_to_cpup((__be32 *)(addr));
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rar_high = le16_to_cpup((__be16 *)(addr + 4));
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/* Indicate to hardware the Address is Valid. */
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rar_high |= E1000_RAH_AV;
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