tree 40dba500db5b02a9e04c6d7bb64a69c60c7f7e88
parent 784771e74b9207b0dd9e1f3b04729e6356c88650
author Pravin B Shelar <pshelar@nicira.com> 1372787853 -0700
committer David S. Miller <davem@davemloft.net> 1372808615 -0700

ip_tunnels: Use skb-len to PMTU check.

In path mtu check, ip header total length works for gre device
but not for gre-tap device.  Use skb len which is consistent
for all tunneling types.  This is old bug in gre.
This also fixes mtu calculation bug introduced by
commit c54419321455631079c7d (GRE: Refactor GRE tunneling code).

Reported-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>