tree b531cdc5afb34dae85d67aef5607d344996e1f44
parent 09a2c3c0d3d3550675b766aa5edc28ffee79d7ab
author James Chapman <jchapman@katalix.com> 1229419429 -0800
committer David S. Miller <davem@davemloft.net> 1229419429 -0800

l2tp: fix UDP checksum support

The pppol2tp driver has had broken UDP checksum code for a long
time. This patch fixes it. If UDP checksums are enabled in the
tunnel's UDP socket, the L2TP driver now properly validates the
checksum on receive and fills in the checksum on transmit. If the
network device has hardware checksum support and is enabled, it is
used instead of generating/checking the checksum in software.

Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>