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e1000e: bad short packets received when jumbos enabled on 82579
When short packets are received with jumbos enabled on 82579, they can be interpreted to have a receive address that does not match any configured address. This is due to a hardware bug that can be worked around by reducing the number of IPG octets added when the packet is transferred from the PHY to the MAC. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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@ -1578,7 +1578,7 @@ s32 e1000_lv_jumbo_workaround_ich8lan(struct e1000_hw *hw, bool enable)
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ret_val = e1e_wphy(hw, PHY_REG(776, 20), data);
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ret_val = e1e_wphy(hw, PHY_REG(776, 20), data);
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if (ret_val)
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if (ret_val)
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goto out;
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goto out;
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ret_val = e1e_wphy(hw, PHY_REG(776, 23), 0xFE00);
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ret_val = e1e_wphy(hw, PHY_REG(776, 23), 0xF100);
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if (ret_val)
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if (ret_val)
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goto out;
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goto out;
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e1e_rphy(hw, HV_PM_CTRL, &data);
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e1e_rphy(hw, HV_PM_CTRL, &data);
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