tcp_md5: Use TCP extra-options on the input path

The checks are now being done through the extra-option framework. For
TCP MD5 this means that the check happens a bit later than usual.

Cc: Ivan Delalande <colona@arista.com>
Signed-off-by: Christoph Paasch <cpaasch@apple.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
5 files changed