l2tp: fix UDP checksum support

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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>

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James Chapman 2008-12-16 01:23:49 -08:00 • committed by David S. Miller

parent 09a2c3c0d3

commit ffcebb163c

1 changed files with 82 additions and 12 deletions

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94

drivers/net/pppol2tp.c

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