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Bruce Allan authored
On 82577/8/9 in half-duplex when a received packet is passed from the PHY to the MAC, if too many preamble octects are stripped from the packet before arriving at the MAC, it can be misintrepeted as an in-band message rather than an actual frame. For example, if the frame contents resembled an interrupt request in-band message, it would trigger a false interrupt. In most cases, the packet is just dropped. By reducing the number of preamble octets stripped from the beginning of the frame when passing it from the PHY to the MAC, the MAC will interpret the frame properly. An additional uses of the magic PHY_REG(770, 16) have been updated with a define introduced with this patch. 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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