tree 279d634b92fed1d5fe143a2a1b6465a45bae029a
parent e2d0a7c7268374b7fd974326a15ac7f362bf3114
author Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> 1542446682 +0100
committer Joe Hershberger <joe.hershberger@ni.com> 1548351327 -0600

net: designware: clear padding bytes

Short frames are padded to the minimum allowed size of 60 bytes.
However, the designware driver sends old data in these padding bytes.
It is common practice to zero out these padding bytes ro prevent
leaking memory contents to other hosts.

Fix the padding code to zero out the padded bytes at the end.

Tested on socfpga gen5.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>