r8169: TSO fixes.
- the MSS value is actually contained in a 11 bits wide (0x7ff) field. The extra bit in the former MSSMask did encompass the TSO command bit ("LargeSend") as well (0xfff). Oops. - the Tx descriptor layout is not the same through the whole chipset family. The 8169 documentation, the 8168c documentation and Realtek's drivers (8.020.00, 1.019.00, 6.014.00) highlight two layouts: 1. 8169, 8168 up to 8168b (included) and 8101 2. {8102e, 8168c} and beyond - notwithstanding the "first descriptor" and "last descriptor" bits, the same Tx descriptor content is enforced when a packet consists of several descriptors. The chipsets are documented to require it. Credits go to David Dillow <dave@thedillows.org> for the original patch. Signed-off-by:Francois Romieu <romieu@fr.zoreil.com> Cc: Realtek <nic_swsd@realtek.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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47c2cdf5
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