lan743x: fix ethernet frame cutoff issue
The ethernet frame length is calculated incorrectly. Depending on the value of RX_HEAD_PADDING, this may result in ethernet frames that are too short (cut off at the end), or too long (garbage added to the end). Fix by calculating the ethernet frame length correctly. For added clarity, use the ETH_FCS_LEN constant in the calculation. Many thanks to Heiner Kallweit for suggesting this solution. Suggested-by:Heiner Kallweit <hkallweit1@gmail.com> Fixes: 3e21a10f ("lan743x: trim all 4 bytes of the FCS; not just 2") Link: https://lore.kernel.org/lkml/20210408172353.21143-1-TheSven73@gmail.com/ Signed-off-by:
Sven Van Asbroeck <thesven73@gmail.com> Reviewed-by:
George McCollister <george.mccollister@gmail.com> Tested-by:
George McCollister <george.mccollister@gmail.com> Link: https://lore.kernel.org/r/20210409003904.8957-1-TheSven73@gmail.com Signed-off-by:
Jakub Kicinski <kuba@kernel.org>
parent
864db232
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